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dl/third/OpenXLSX/external/zippy/zippy.hpp
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lveyou 4f643c1e7c 初始化内容
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#ifndef ZIPPYHEADERONLY_ZIPPY_HPP
#define ZIPPYHEADERONLY_ZIPPY_HPP
#pragma warning(push)
#pragma warning(disable : 4334)
#pragma warning(disable : 4996)
#pragma warning(disable : 4127)
#pragma warning(disable : 4267)
#pragma warning(disable : 4100)
#pragma warning(disable : 4245)
#pragma warning(disable : 4267)
#pragma warning(disable : 4242)
#pragma warning(disable : 4244)
#include <algorithm>
#include <cstddef>
#include <cstdio>
#include <fstream>
#include <iostream>
#include <memory>
#include <random>
#include <stdexcept>
#include <string>
#include <vector>
#ifdef _WIN32
# include <direct.h>
#endif
#include <nowide/cstdio.hpp>
namespace
{
/* miniz.c 2.0.8 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
See "unlicense" statement at the end of this file.
Rich Geldreich <richgel99@gmail.com>, last updated Oct. 13, 2013
Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
Most API's defined in miniz.c are optional. For example, to disable the archive related functions just define
MINIZ_NO_ARCHIVE_APIS, or to get rid of all stdio usage define MINIZ_NO_STDIO (see the list below for more macros).
* Low-level Deflate/Inflate implementation notes:
Compression: Use the "tdefl" API's. The compressor supports raw, static, and dynamic blocks, lazy or
greedy parsing, match length filtering, RLE-only, and Huffman-only streams. It performs and compresses
approximately as well as zlib.
Decompression: Use the "tinfl" API's. The entire decompressor is implemented as a single function
coroutine: see tinfl_decompress(). It supports decompression into a 32KB (or larger power of 2) wrapping buffer, or into a memory
block large enough to hold the entire file.
The low-level tdefl/tinfl API's do not make any use of dynamic memory allocation.
* zlib-style API notes:
miniz.c implements a fairly large subset of zlib. There's enough functionality present for it to be a drop-in
zlib replacement in many apps:
The z_stream struct, optional memory allocation callbacks
deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound
inflateInit/inflateInit2/inflate/inflateEnd
compress, compress2, compressBound, uncompress
CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly routines.
Supports raw deflate streams or standard zlib streams with adler-32 checking.
Limitations:
The callback API's are not implemented yet. No support for gzip headers or zlib static dictionaries.
I've tried to closely emulate zlib's various flavors of stream flushing and return status codes, but
there are no guarantees that miniz.c pulls this off perfectly.
* PNG writing: See the tdefl_write_image_to_png_file_in_memory() function, originally written by
Alex Evans. Supports 1-4 bytes/pixel images.
* ZIP archive API notes:
The ZIP archive API's where designed with simplicity and efficiency in mind, with just enough abstraction to
get the job done with minimal fuss. There are simple API's to retrieve file information, read files from
existing archives, create new archives, append new files to existing archives, or clone archive data from
one archive to another. It supports archives located in memory or the heap, on disk (using stdio.h),
or you can specify custom file read/write callbacks.
- Archive reading: Just call this function to read a single file from a disk archive:
void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name,
size_t *pSize, mz_uint zip_flags);
For more complex cases, use the "mz_zip_reader" functions. Upon opening an archive, the entire central
directory is located and read as-is into memory, and subsequent file access only occurs when reading individual files.
- Archives file scanning: The simple way is to use this function to scan a loaded archive for a specific file:
int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags);
The locate operation can optionally check file comments too, which (as one example) can be used to identify
multiple versions of the same file in an archive. This function uses a simple linear search through the central
directory, so it's not very fast.
Alternately, you can iterate through all the files in an archive (using mz_zip_reader_get_num_files()) and
retrieve detailed info on each file by calling mz_zip_reader_file_stat().
- Archive creation: Use the "mz_zip_writer" functions. The ZIP writer immediately writes compressed file data
to disk and builds an exact image of the central directory in memory. The central directory image is written
all at once at the end of the archive file when the archive is finalized.
The archive writer can optionally align each file's local header and file data to any power of 2 alignment,
which can be useful when the archive will be read from optical media. Also, the writer supports placing
arbitrary data blobs at the very beginning of ZIP archives. Archives written using either feature are still
readable by any ZIP tool.
- Archive appending: The simple way to add a single file to an archive is to call this function:
mz_bool mz_zip_add_mem_to_archive_file_in_place(const char *pZip_filename, const char *pArchive_name,
const void *pBuf, size_t buf_size, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags);
The archive will be created if it doesn't already exist, otherwise it'll be appended to.
Note the appending is done in-place and is not an atomic operation, so if something goes wrong
during the operation it's possible the archive could be left without a central directory (although the local
file headers and file data will be fine, so the archive will be recoverable).
For more complex archive modification scenarios:
1. The safest way is to use a mz_zip_reader to read the existing archive, cloning only those bits you want to
preserve into a new archive using using the mz_zip_writer_add_from_zip_reader() function (which compiles the
compressed file data as-is). When you're done, delete the old archive and rename the newly written archive, and
you're done. This is safe but requires a bunch of temporary disk space or heap memory.
2. Or, you can convert an mz_zip_reader in-place to an mz_zip_writer using mz_zip_writer_init_from_reader(),
append new files as needed, then finalize the archive which will write an updated central directory to the
original archive. (This is basically what mz_zip_add_mem_to_archive_file_in_place() does.) There's a
possibility that the archive's central directory could be lost with this method if anything goes wrong, though.
- ZIP archive support limitations:
No zip64 or spanning support. Extraction functions can only handle unencrypted, stored or deflated files.
Requires streams capable of seeking.
* This is a header file library, like stb_image.c. To get only a header file, either cut and paste the
below header, or create miniz.h, #define MINIZ_HEADER_FILE_ONLY, and then include miniz.c from it.
* Important: For best perf. be sure to customize the below macros for your target platform:
#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1
#define MINIZ_LITTLE_ENDIAN 1
#define MINIZ_HAS_64BIT_REGISTERS 1
* On platforms using glibc, Be sure to "#define _LARGEFILE64_SOURCE 1" before including miniz.c to ensure miniz
uses the 64-bit variants: fopen64(), stat64(), etc. Otherwise you won't be able to process large files
(i.e. 32-bit stat() fails for me on files > 0x7FFFFFFF bytes).
*/
#pragma once
/* Defines to completely disable specific portions of miniz.c:
If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. */
/* Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. */
/*#define MINIZ_NO_STDIO */
/* If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or */
/* get/set file times, and the C run-time funcs that get/set times won't be called. */
/* The current downside is the times written to your archives will be from 1979. */
/*#define MINIZ_NO_TIME */
/* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */
/*#define MINIZ_NO_ARCHIVE_APIS */
/* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related ZIP archive API's. */
/*#define MINIZ_NO_ARCHIVE_WRITING_APIS */
/* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. */
/*#define MINIZ_NO_ZLIB_APIS */
/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. */
/*#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES */
/* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc.
Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc
callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user
functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. */
/*#define MINIZ_NO_MALLOC */
#if defined(__TINYC__) && (defined(__linux) || defined(__linux__))
/* TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux */
# define MINIZ_NO_TIME
#endif
#include <stddef.h>
#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS)
# include <time.h>
#endif
#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || \
defined(i386) || defined(__ia64__) || defined(__x86_64__)
/* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */
# define MINIZ_X86_OR_X64_CPU 1
#else
# define MINIZ_X86_OR_X64_CPU 0
#endif
#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU
/* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */
# define MINIZ_LITTLE_ENDIAN 1
#else
# define MINIZ_LITTLE_ENDIAN 0
#endif
#if MINIZ_X86_OR_X64_CPU
/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. */
# define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1
#else
# define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
#endif
#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || \
defined(__x86_64__)
/* Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers are reasonably fast (and don't involve compiler generated calls to
* helper functions). */
# define MINIZ_HAS_64BIT_REGISTERS 1
#else
# define MINIZ_HAS_64BIT_REGISTERS 0
#endif
#ifdef __cplusplus
extern "C"
{
#endif
/* ------------------- zlib-style API Definitions. */
/* For more compatibility with zlib, miniz.c uses unsigned long for some parameters/struct members. Beware: mz_ulong can be either
* 32 or 64-bits! */
typedef unsigned long mz_ulong;
/* mz_free() internally uses the MZ_FREE() macro (which by default calls free() unless you've modified the MZ_MALLOC macro) to
* release a block allocated from the heap. */
inline void mz_free(void* p);
#define MZ_ADLER32_INIT (1)
/* mz_adler32() returns the initial adler-32 getValue to use when called with ptr==NULL. */
inline mz_ulong mz_adler32(mz_ulong adler, const unsigned char* ptr, size_t buf_len);
#define MZ_CRC32_INIT (0)
/* mz_crc32() returns the initial CRC-32 getValue to use when called with ptr==NULL. */
inline mz_ulong mz_crc32(mz_ulong crc, const unsigned char* ptr, size_t buf_len);
/* Compression strategies. */
enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 };
/* Method */
#define MZ_DEFLATED 8
/* Heap allocation callbacks.
Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. */
typedef void* (*mz_alloc_func)(void* opaque, size_t items, size_t size);
typedef void (*mz_free_func)(void* opaque, void* address);
typedef void* (*mz_realloc_func)(void* opaque, void* address, size_t items, size_t size);
/* Compression levels: 0-9 are the standard zlib-style levels, 10 is best possible compression (not zlib compatible, and may be very
* slow), MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL. */
enum {
MZ_NO_COMPRESSION = 0,
MZ_BEST_SPEED = 1,
MZ_BEST_COMPRESSION = 9,
MZ_UBER_COMPRESSION = 10,
MZ_DEFAULT_LEVEL = 6,
MZ_DEFAULT_COMPRESSION = -1
};
#define MZ_VERSION "10.0.3"
#define MZ_VERNUM 0xA030
#define MZ_VER_MAJOR 10
#define MZ_VER_MINOR 0
#define MZ_VER_REVISION 3
#define MZ_VER_SUBREVISION 0
#ifndef MINIZ_NO_ZLIB_APIS
/* Flush values. For typical usage you only need MZ_NO_FLUSH and MZ_FINISH. The other values are for advanced use (refer to the zlib
* docs). */
enum { MZ_NO_FLUSH = 0, MZ_PARTIAL_FLUSH = 1, MZ_SYNC_FLUSH = 2, MZ_FULL_FLUSH = 3, MZ_FINISH = 4, MZ_BLOCK = 5 };
/* Return status codes. MZ_PARAM_ERROR is non-standard. */
enum {
MZ_OK = 0,
MZ_STREAM_END = 1,
MZ_NEED_DICT = 2,
MZ_ERRNO = -1,
MZ_STREAM_ERROR = -2,
MZ_DATA_ERROR = -3,
MZ_MEM_ERROR = -4,
MZ_BUF_ERROR = -5,
MZ_VERSION_ERROR = -6,
MZ_PARAM_ERROR = -10000
};
/* Window bits */
# define MZ_DEFAULT_WINDOW_BITS 15
struct mz_internal_state;
/* Compression/decompression stream struct. */
typedef struct mz_stream_s
{
const unsigned char* next_in; /* pointer to next byte to read */
unsigned int avail_in; /* number of bytes available at next_in */
mz_ulong total_in; /* total number of bytes consumed so far */
unsigned char* next_out; /* pointer to next byte to write */
unsigned int avail_out; /* number of bytes that can be written to next_out */
mz_ulong total_out; /* total number of bytes produced so far */
char* msg; /* error msg (unused) */
struct mz_internal_state* state; /* internal state, allocated by zalloc/zfree */
mz_alloc_func zalloc; /* optional heap allocation function (defaults to malloc) */
mz_free_func zfree; /* optional heap free function (defaults to free) */
void* opaque; /* heap alloc function user pointer */
int data_type; /* data_type (unused) */
mz_ulong adler; /* adler32 of the @library or uncompressed data */
mz_ulong reserved; /* not used */
} mz_stream;
typedef mz_stream* mz_streamp;
/* Returns the version string of miniz.c. */
inline const char* mz_version(void);
/* mz_deflateInit() initializes a compressor with default options: */
/* Parameters: */
/* pStream must point to an initialized mz_stream struct. */
/* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */
/* level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. */
/* (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) */
/* Return values: */
/* MZ_OK on success. */
/* MZ_STREAM_ERROR if the stream is bogus. */
/* MZ_PARAM_ERROR if the input parameters are bogus. */
/* MZ_MEM_ERROR on out of memory. */
inline int mz_deflateInit(mz_streamp pStream, int level);
/* mz_deflateInit2() is like mz_deflate(), except with more control: */
/* Additional parameters: */
/* method must be MZ_DEFLATED */
/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to wrap the deflate stream with zlib header/adler-32 footer) or
* -MZ_DEFAULT_WINDOW_BITS (raw deflate/no header or footer) */
/* mem_level must be between [1, 9] (it's checked but ignored by miniz.c) */
inline int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy);
/* Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by
* mz_deflateInit()/mz_deflateInit2(). */
inline int mz_deflateReset(mz_streamp pStream);
/* mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. */
/* Parameters: */
/* pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out
* members. */
/* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. */
/* Return values: */
/* MZ_OK on success (when flushing, or if more input is needed but not available, and/or there's more output to be written but the
* output buffer is full). */
/* MZ_STREAM_END if all input has been consumed and all output bytes have been written. Don't call mz_deflate() on the stream
* anymore. */
/* MZ_STREAM_ERROR if the stream is bogus. */
/* MZ_PARAM_ERROR if one of the parameters is invalid. */
/* MZ_BUF_ERROR if no forward progress is possible because the input and/or output buffers are empty. (Fill up the input buffer or
* free up some output space and try again.) */
inline int mz_deflate(mz_streamp pStream, int flush);
/* mz_deflateEnd() deinitializes a compressor: */
/* Return values: */
/* MZ_OK on success. */
/* MZ_STREAM_ERROR if the stream is bogus. */
inline int mz_deflateEnd(mz_streamp pStream);
/* mz_deflateBound() returns a (very) conservative upper bound on the amount of data that could be generated by deflate(), assuming
* flush is set to only MZ_NO_FLUSH or MZ_FINISH. */
inline mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len);
/* Single-call compression functions mz_compress() and mz_compress2(): */
/* Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. */
inline int mz_compress(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len);
inline int mz_compress2(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len, int level);
/* mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling
* mz_compress(). */
inline mz_ulong mz_compressBound(mz_ulong source_len);
/* Initializes a decompressor. */
inline int mz_inflateInit(mz_streamp pStream);
/* mz_inflateInit2() is like mz_inflateInit() with an additional option that controls the window size and whether or not the stream
* has been wrapped with a zlib header/footer: */
/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */
inline int mz_inflateInit2(mz_streamp pStream, int window_bits);
/* Decompresses the input stream to the output, consuming only as much of the input as needed, and writing as much to the output as
* possible. */
/* Parameters: */
/* pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out
* members. */
/* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */
/* On the first call, if flush is MZ_FINISH it's assumed the input and output buffers are both sized large enough to decompress
* the entire stream in a single call (this is slightly faster). */
/* MZ_FINISH implies that there are no more @library bytes available beside what's already in the input buffer, and that the
* output buffer is large enough to hold the rest of the decompressed data. */
/* Return values: */
/* MZ_OK on success. Either more input is needed but not available, and/or there's more output to be written but the output buffer
* is full. */
/* MZ_STREAM_END if all needed input has been consumed and all output bytes have been written. For zlib streams, the adler-32 of
* the decompressed data has also been verified. */
/* MZ_STREAM_ERROR if the stream is bogus. */
/* MZ_DATA_ERROR if the deflate stream is invalid. */
/* MZ_PARAM_ERROR if one of the parameters is invalid. */
/* MZ_BUF_ERROR if no forward progress is possible because the input buffer is empty but the inflater needs more input to
* continue, or if the output buffer is not large enough. Call mz_inflate() again */
/* with more input data, or with more room in the output buffer (except when using single call decompression, described above). */
inline int mz_inflate(mz_streamp pStream, int flush);
/* Deinitializes a decompressor. */
inline int mz_inflateEnd(mz_streamp pStream);
/* Single-call decompression. */
/* Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. */
inline int mz_uncompress(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len);
/* Returns a string description of the specified error code, or NULL if the error code is invalid. */
inline const char* mz_error(int err);
/* Redefine zlib-compatible names to miniz equivalents, so miniz.c can be used as a drop-in replacement for the subset of zlib that miniz.c
* supports. */
/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. */
# ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES
typedef unsigned char Byte;
typedef unsigned int uInt;
typedef mz_ulong uLong;
typedef Byte Bytef;
typedef uInt uIntf;
typedef char charf;
typedef int intf;
typedef void* voidpf;
typedef uLong uLongf;
typedef void* voidp;
typedef void* const voidpc;
# define Z_NULL 0
# define Z_NO_FLUSH MZ_NO_FLUSH
# define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH
# define Z_SYNC_FLUSH MZ_SYNC_FLUSH
# define Z_FULL_FLUSH MZ_FULL_FLUSH
# define Z_FINISH MZ_FINISH
# define Z_BLOCK MZ_BLOCK
# define Z_OK MZ_OK
# define Z_STREAM_END MZ_STREAM_END
# define Z_NEED_DICT MZ_NEED_DICT
# define Z_ERRNO MZ_ERRNO
# define Z_STREAM_ERROR MZ_STREAM_ERROR
# define Z_DATA_ERROR MZ_DATA_ERROR
# define Z_MEM_ERROR MZ_MEM_ERROR
# define Z_BUF_ERROR MZ_BUF_ERROR
# define Z_VERSION_ERROR MZ_VERSION_ERROR
# define Z_PARAM_ERROR MZ_PARAM_ERROR
# define Z_NO_COMPRESSION MZ_NO_COMPRESSION
# define Z_BEST_SPEED MZ_BEST_SPEED
# define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION
# define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION
# define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY
# define Z_FILTERED MZ_FILTERED
# define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY
# define Z_RLE MZ_RLE
# define Z_FIXED MZ_FIXED
# define Z_DEFLATED MZ_DEFLATED
# define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS
# define alloc_func mz_alloc_func
# define free_func mz_free_func
# define internal_state mz_internal_state
# define z_stream mz_stream
# define deflateInit mz_deflateInit
# define deflateInit2 mz_deflateInit2
# define deflateReset mz_deflateReset
# define deflate mz_deflate
# define deflateEnd mz_deflateEnd
# define deflateBound mz_deflateBound
# define compress mz_compress
# define compress2 mz_compress2
# define compressBound mz_compressBound
# define inflateInit mz_inflateInit
# define inflateInit2 mz_inflateInit2
# define inflate mz_inflate
# define inflateEnd mz_inflateEnd
# define uncompress mz_uncompress
# define crc32 mz_crc32
# define adler32 mz_adler32
# define MAX_WBITS 15
# define MAX_MEM_LEVEL 9
# define zError mz_error
# define ZLIB_VERSION MZ_VERSION
# define ZLIB_VERNUM MZ_VERNUM
# define ZLIB_VER_MAJOR MZ_VER_MAJOR
# define ZLIB_VER_MINOR MZ_VER_MINOR
# define ZLIB_VER_REVISION MZ_VER_REVISION
# define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION
# define zlibVersion mz_version
# define zlib_version mz_version()
# endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */
#endif /* MINIZ_NO_ZLIB_APIS */
#ifdef __cplusplus
}
#endif
#pragma once
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
/* ------------------- Types and macros */
typedef unsigned char mz_uint8;
typedef signed short mz_int16;
typedef unsigned short mz_uint16;
typedef unsigned int mz_uint32;
typedef unsigned int mz_uint;
typedef int64_t mz_int64;
typedef uint64_t mz_uint64;
typedef int mz_bool;
#define MZ_FALSE (0)
#define MZ_TRUE (1)
/* Works around MSVC's spammy "warning C4127: conditional expression is constant" message. */
#ifdef _MSC_VER
# define MZ_MACRO_END while (0, 0)
#else
# define MZ_MACRO_END while (0)
#endif
#ifdef MINIZ_NO_STDIO
# define MZ_FILE void*
#else
# include <stdio.h>
# define MZ_FILE FILE
#endif /* #ifdef MINIZ_NO_STDIO */
#ifdef MINIZ_NO_TIME
typedef struct mz_dummy_time_t_tag
{
int m_dummy;
} mz_dummy_time_t;
# define MZ_TIME_T mz_dummy_time_t
#else
# define MZ_TIME_T time_t
#endif
#define MZ_ASSERT(x) assert(x)
#ifdef MINIZ_NO_MALLOC
# define MZ_MALLOC(x) NULL
# define MZ_FREE(x) (void)x, ((void)0)
# define MZ_REALLOC(p, x) NULL
#else
# define MZ_MALLOC(x) malloc(x)
# define MZ_FREE(x) free(x)
# define MZ_REALLOC(p, x) realloc(p, x)
#endif
#define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b))
#define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
# define MZ_READ_LE16(p) *((const mz_uint16*)(p))
# define MZ_READ_LE32(p) *((const mz_uint32*)(p))
#else
# define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8*)(p))[0]) | ((mz_uint32)(((const mz_uint8*)(p))[1]) << 8U))
# define MZ_READ_LE32(p) \
((mz_uint32)(((const mz_uint8*)(p))[0]) | ((mz_uint32)(((const mz_uint8*)(p))[1]) << 8U) | \
((mz_uint32)(((const mz_uint8*)(p))[2]) << 16U) | ((mz_uint32)(((const mz_uint8*)(p))[3]) << 24U))
#endif
#define MZ_READ_LE64(p) (((mz_uint64)MZ_READ_LE32(p)) | (((mz_uint64)MZ_READ_LE32((const mz_uint8*)(p) + sizeof(mz_uint32))) << 32U))
#ifdef _MSC_VER
# define MZ_FORCEINLINE __forceinline
#elif defined(__GNUC__)
# define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__))
#else
# define MZ_FORCEINLINE inline
#endif
#ifdef __cplusplus
extern "C"
{
#endif
extern inline void* miniz_def_alloc_func(void* opaque, size_t items, size_t size);
extern inline void miniz_def_free_func(void* opaque, void* address);
extern inline void* miniz_def_realloc_func(void* opaque, void* address, size_t items, size_t size);
#define MZ_UINT16_MAX (0xFFFFU)
#define MZ_UINT32_MAX (0xFFFFFFFFU)
#ifdef __cplusplus
}
#endif
#pragma once
#ifdef __cplusplus
extern "C"
{
#endif
/* ------------------- Low-level Compression API Definitions */
/* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more
* frequently). */
#define TDEFL_LESS_MEMORY 0
/* tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): */
/* TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary probes per dictionary search. 0=Huffman only, 1=Huffman+LZ
* (fastest/crap compression), 4095=Huffman+LZ (slowest/best compression). */
enum { TDEFL_HUFFMAN_ONLY = 0, TDEFL_DEFAULT_MAX_PROBES = 128, TDEFL_MAX_PROBES_MASK = 0xFFF };
/* TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib header before the deflate data, and the Adler-32 of the @library
* data at the end. Otherwise, you'll get raw deflate data. */
/* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). */
/* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. */
/* TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the compressor's initialization time to the minimum, but the output may
* vary from run to run given the same input (depending on the contents of memory). */
/* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) */
/* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */
/* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */
/* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */
/* The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */
enum {
TDEFL_WRITE_ZLIB_HEADER = 0x01000,
TDEFL_COMPUTE_ADLER32 = 0x02000,
TDEFL_GREEDY_PARSING_FLAG = 0x04000,
TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000,
TDEFL_RLE_MATCHES = 0x10000,
TDEFL_FILTER_MATCHES = 0x20000,
TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000,
TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000
};
/* High level compression functions: */
/* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). */
/* On entry: */
/* pSrc_buf, src_buf_len: Pointer and size of @library block to compress. */
/* flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve
* compression. */
/* On return: */
/* Function returns a pointer to the compressed data, or NULL on failure. */
/* *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. */
/* The caller must free() the returned block when it's no longer needed. */
inline void* tdefl_compress_mem_to_heap(const void* pSrc_buf, size_t src_buf_len, size_t* pOut_len, int flags);
/* tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. */
/* Returns 0 on failure. */
inline size_t tdefl_compress_mem_to_mem(void* pOut_buf, size_t out_buf_len, const void* pSrc_buf, size_t src_buf_len, int flags);
/* Compresses an image to a compressed PNG file in memory. */
/* On entry: */
/* pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. */
/* The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. */
/* level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc. or a decent default is
* MZ_DEFAULT_LEVEL */
/* If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). */
/* On return: */
/* Function returns a pointer to the compressed data, or NULL on failure. */
/* *pLen_out will be set to the size of the PNG image file. */
/* The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. */
inline void* tdefl_write_image_to_png_file_in_memory_ex(const void* pImage,
int w,
int h,
int num_chans,
size_t* pLen_out,
mz_uint level,
mz_bool flip);
inline void* tdefl_write_image_to_png_file_in_memory(const void* pImage, int w, int h, int num_chans, size_t* pLen_out);
/* Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called
* TDEFL_OUT_BUF_SIZE at a time. */
typedef mz_bool (*tdefl_put_buf_func_ptr)(const void* pBuf, int len, void* pUser);
/* tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. */
inline mz_bool tdefl_compress_mem_to_output(const void* pBuf,
size_t buf_len,
tdefl_put_buf_func_ptr pPut_buf_func,
void* pPut_buf_user,
int flags);
enum {
TDEFL_MAX_HUFF_TABLES = 3,
TDEFL_MAX_HUFF_SYMBOLS_0 = 288,
TDEFL_MAX_HUFF_SYMBOLS_1 = 32,
TDEFL_MAX_HUFF_SYMBOLS_2 = 19,
TDEFL_LZ_DICT_SIZE = 32768,
TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1,
TDEFL_MIN_MATCH_LEN = 3,
TDEFL_MAX_MATCH_LEN = 258
};
/* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). */
#if TDEFL_LESS_MEMORY
enum {
TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024,
TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,
TDEFL_MAX_HUFF_SYMBOLS = 288,
TDEFL_LZ_HASH_BITS = 12,
TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,
TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,
TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS
};
#else
enum {
TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024,
TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,
TDEFL_MAX_HUFF_SYMBOLS = 288,
TDEFL_LZ_HASH_BITS = 15,
TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,
TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,
TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS
};
#endif
/* The low-level tdefl functions below may be used directly if the above helper functions aren't flexible enough. The low-level
* functions don't make any heap allocations, unlike the above helper functions. */
typedef enum {
TDEFL_STATUS_BAD_PARAM = -2,
TDEFL_STATUS_PUT_BUF_FAILED = -1,
TDEFL_STATUS_OKAY = 0,
TDEFL_STATUS_DONE = 1
} tdefl_status;
/* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */
typedef enum { TDEFL_NO_FLUSH = 0, TDEFL_SYNC_FLUSH = 2, TDEFL_FULL_FLUSH = 3, TDEFL_FINISH = 4 } tdefl_flush;
/* tdefl's compression state structure. */
typedef struct
{
tdefl_put_buf_func_ptr m_pPut_buf_func;
void* m_pPut_buf_user;
mz_uint m_flags, m_max_probes[2];
int m_greedy_parsing;
mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size;
mz_uint8 * m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end;
mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer;
mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, m_output_flush_ofs, m_output_flush_remaining, m_finished,
m_block_index, m_wants_to_finish;
tdefl_status m_prev_return_status;
const void* m_pIn_buf;
void* m_pOut_buf;
size_t * m_pIn_buf_size, *m_pOut_buf_size;
tdefl_flush m_flush;
const mz_uint8* m_pSrc;
size_t m_src_buf_left, m_out_buf_ofs;
mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1];
mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE];
mz_uint16 m_next[TDEFL_LZ_DICT_SIZE];
mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE];
mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE];
} tdefl_compressor;
/* Initializes the compressor. */
/* There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. */
/* pBut_buf_func: If NULL, output data will be supplied to the specified callback. In this case, the user should call the
* tdefl_compress_buffer() API for compression. */
/* If pBut_buf_func is NULL the user should always call the tdefl_compress() API. */
/* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) */
inline tdefl_status tdefl_init(tdefl_compressor* d, tdefl_put_buf_func_ptr pPut_buf_func, void* pPut_buf_user, int flags);
/* Compresses a block of data, consuming as much of the specified input buffer as possible, and writing as much compressed data to
* the specified output buffer as possible. */
inline tdefl_status tdefl_compress(tdefl_compressor* d,
const void* pIn_buf,
size_t* pIn_buf_size,
void* pOut_buf,
size_t* pOut_buf_size,
tdefl_flush flush);
/* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. */
/* tdefl_compress_buffer() always consumes the entire input buffer. */
inline tdefl_status tdefl_compress_buffer(tdefl_compressor* d, const void* pIn_buf, size_t in_buf_size, tdefl_flush flush);
inline tdefl_status tdefl_get_prev_return_status(tdefl_compressor* d);
inline mz_uint32 tdefl_get_adler32(tdefl_compressor* d);
/* Create tdefl_compress() flags given zlib-style compression parameters. */
/* level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) */
/* window_bits may be -15 (raw deflate) or 15 (zlib) */
/* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */
inline mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
/* Allocate the tdefl_compressor structure in C so that */
/* non-C language bindings to tdefl_ API don't need to worry about */
/* structure size and allocation mechanism. */
inline tdefl_compressor* tdefl_compressor_alloc();
inline void tdefl_compressor_free(tdefl_compressor* pComp);
#ifdef __cplusplus
}
#endif
#pragma once
/* ------------------- Low-level Decompression API Definitions */
#ifdef __cplusplus
extern "C"
{
#endif
/* Decompression flags used by tinfl_decompress(). */
/* TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib header and ends with an adler32 checksum (it's a valid zlib
* stream). Otherwise, the input is a raw deflate stream. */
/* TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes available beyond the end of the supplied input buffer. If clear,
* the input buffer contains all remaining input. */
/* TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer is large enough to hold the entire decompressed stream. If
* clear, the output buffer is at least the size of the dictionary (typically 32KB). */
/* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. */
enum {
TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
TINFL_FLAG_HAS_MORE_INPUT = 2,
TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
TINFL_FLAG_COMPUTE_ADLER32 = 8
};
/* High level decompression functions: */
/* tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). */
/* On entry: */
/* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib @library data to decompress. */
/* On return: */
/* Function returns a pointer to the decompressed data, or NULL on failure. */
/* *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. */
/* The caller must call mz_free() on the returned block when it's no longer needed. */
inline void* tinfl_decompress_mem_to_heap(const void* pSrc_buf, size_t src_buf_len, size_t* pOut_len, int flags);
/* tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. */
/* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. */
#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1))
inline size_t tinfl_decompress_mem_to_mem(void* pOut_buf, size_t out_buf_len, const void* pSrc_buf, size_t src_buf_len, int flags);
/* tinfl_decompress_mem_to_callback() decompresses a block in memory to an internal 32KB buffer, and a user provided callback
* function will be called to flush the buffer. */
/* Returns 1 on success or 0 on failure. */
typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void* pUser);
inline int tinfl_decompress_mem_to_callback(const void* pIn_buf,
size_t* pIn_buf_size,
tinfl_put_buf_func_ptr pPut_buf_func,
void* pPut_buf_user,
int flags);
struct tinfl_decompressor_tag;
typedef struct tinfl_decompressor_tag tinfl_decompressor;
/* Allocate the tinfl_decompressor structure in C so that */
/* non-C language bindings to tinfl_ API don't need to worry about */
/* structure size and allocation mechanism. */
inline tinfl_decompressor* tinfl_decompressor_alloc();
inline void tinfl_decompressor_free(tinfl_decompressor* pDecomp);
/* Max size of LZ dictionary. */
#define TINFL_LZ_DICT_SIZE 32768
/* Return status. */
typedef enum {
/* This flags indicates the inflator needs 1 or more input bytes to make forward progress, but the caller is indicating that no
more are available. The compressed data */
/* is probably corrupted. If you call the inflator again with more bytes it'll try to continue processing the input but this is
a BAD sign (either the data is corrupted or you called it incorrectly). */
/* If you call it again with no input you'll just get TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */
TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4,
/* This flag indicates that one or more of the input parameters was obviously bogus. (You can try calling it again, but if you
get this error the calling code is wrong.) */
TINFL_STATUS_BAD_PARAM = -3,
/* This flags indicate the inflator is finished but the adler32 check of the uncompressed data didn't match. If you call it
again it'll return TINFL_STATUS_DONE. */
TINFL_STATUS_ADLER32_MISMATCH = -2,
/* This flags indicate the inflator has somehow failed (bad code, corrupted input, etc.). If you call it again without resetting
via tinfl_init() it it'll just keep on returning the same status failure code. */
TINFL_STATUS_FAILED = -1,
/* Any status code less than TINFL_STATUS_DONE must indicate a failure. */
/* This flag indicates the inflator has returned every byte of uncompressed data that it can, has consumed every byte that it
needed, has successfully reached the end of the deflate stream, and */
/* if zlib headers and adler32 checking enabled that it has successfully checked the uncompressed data's adler32. If you call it
again you'll just get TINFL_STATUS_DONE over and over again. */
TINFL_STATUS_DONE = 0,
/* This flag indicates the inflator MUST have more input data (even 1 byte) before it can make any more forward progress, or you
need to clear the TINFL_FLAG_HAS_MORE_INPUT */
/* flag on the next call if you don't have any more @library data. If the @library data was somehow corrupted it's also possible
(but unlikely) for the inflator to keep on demanding input to */
/* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT flag. */
TINFL_STATUS_NEEDS_MORE_INPUT = 1,
/* This flag indicates the inflator definitely has 1 or more bytes of uncompressed data available, but it cannot write this data
into the output buffer. */
/* Note if the @library compressed data was corrupted it's possible for the inflator to return a lot of uncompressed data to the
caller. I've been assuming you know how much uncompressed data to expect */
/* (either exact or worst case) and will stop calling the inflator and fail after receiving too much. In pure streaming
scenarios where you have no idea how many bytes to expect this may not be possible */
/* so I may need to add some code to address this. */
TINFL_STATUS_HAS_MORE_OUTPUT = 2
} tinfl_status;
/* Initializes the decompressor to its initial state. */
#define tinfl_init(r) \
do { \
(r)->m_state = 0; \
} \
MZ_MACRO_END
#define tinfl_get_adler32(r) (r)->m_check_adler32
/* Main low-level decompressor coroutine function. This is the only function actually needed for decompression. All the other
* functions are just high-level helpers for improved usability. */
/* This is a universal API, i.e. it can be used as a building block to build any desired higher level decompression API. In the
* limit case, it can be called once per every byte input or output. */
inline tinfl_status tinfl_decompress(tinfl_decompressor* r,
const mz_uint8* pIn_buf_next,
size_t* pIn_buf_size,
mz_uint8* pOut_buf_start,
mz_uint8* pOut_buf_next,
size_t* pOut_buf_size,
const mz_uint32 decomp_flags);
/* Internal/private bits follow. */
enum {
TINFL_MAX_HUFF_TABLES = 3,
TINFL_MAX_HUFF_SYMBOLS_0 = 288,
TINFL_MAX_HUFF_SYMBOLS_1 = 32,
TINFL_MAX_HUFF_SYMBOLS_2 = 19,
TINFL_FAST_LOOKUP_BITS = 10,
TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
};
typedef struct
{
mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0];
mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
} tinfl_huff_table;
#if MINIZ_HAS_64BIT_REGISTERS
# define TINFL_USE_64BIT_BITBUF 1
#else
# define TINFL_USE_64BIT_BITBUF 0
#endif
#if TINFL_USE_64BIT_BITBUF
typedef mz_uint64 tinfl_bit_buf_t;
# define TINFL_BITBUF_SIZE (64)
#else
typedef mz_uint32 tinfl_bit_buf_t;
# define TINFL_BITBUF_SIZE (32)
#endif
struct tinfl_decompressor_tag
{
mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, m_final, m_type, m_check_adler32, m_dist, m_counter, m_num_extra,
m_table_sizes[TINFL_MAX_HUFF_TABLES];
tinfl_bit_buf_t m_bit_buf;
size_t m_dist_from_out_buf_start;
tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES];
mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
};
#ifdef __cplusplus
}
#endif
#pragma once
/* ------------------- ZIP archive reading/writing */
#ifndef MINIZ_NO_ARCHIVE_APIS
# ifdef __cplusplus
extern "C"
{
# endif
enum {
/* Note: These enums can be reduced as needed to save memory or stack space - they are pretty conservative. */
MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024,
MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512,
MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512
};
typedef struct
{
/* Central directory file index. */
mz_uint32 m_file_index;
/* Byte offset of this entry in the archive's central directory. Note we currently only support up to UINT_MAX or less bytes in
* the central dir. */
mz_uint64 m_central_dir_ofs;
/* These fields are copied directly from the zip's central dir. */
mz_uint16 m_version_made_by;
mz_uint16 m_version_needed;
mz_uint16 m_bit_flag;
mz_uint16 m_method;
# ifndef MINIZ_NO_TIME
MZ_TIME_T m_time;
# endif
/* CRC-32 of uncompressed data. */
mz_uint32 m_crc32;
/* File's compressed size. */
mz_uint64 m_comp_size;
/* File's uncompressed size. Note, I've seen some old archives where directory entries had 512 bytes for their uncompressed
* sizes, but when you try to unpack them you actually get 0 bytes. */
mz_uint64 m_uncomp_size;
/* Zip internal and external file attributes. */
mz_uint16 m_internal_attr;
mz_uint32 m_external_attr;
/* Entry's local header file offset in bytes. */
mz_uint64 m_local_header_ofs;
/* Size of comment in bytes. */
mz_uint32 m_comment_size;
/* MZ_TRUE if the entry appears to be a directory. */
mz_bool m_is_directory;
/* MZ_TRUE if the entry uses encryption/strong encryption (which miniz_zip doesn't support) */
mz_bool m_is_encrypted;
/* MZ_TRUE if the file is not encrypted, a patch file, and if it uses a compression method we support. */
mz_bool m_is_supported;
/* Filename. If string ends in '/' it's a subdirectory entry. */
/* Guaranteed to be zero terminated, may be truncated to fit. */
char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE];
/* Comment field. */
/* Guaranteed to be zero terminated, may be truncated to fit. */
char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE];
} mz_zip_archive_file_stat;
typedef size_t (*mz_file_read_func)(void* pOpaque, mz_uint64 file_ofs, void* pBuf, size_t n);
typedef size_t (*mz_file_write_func)(void* pOpaque, mz_uint64 file_ofs, const void* pBuf, size_t n);
typedef mz_bool (*mz_file_needs_keepalive)(void* pOpaque);
struct mz_zip_internal_state_tag;
typedef struct mz_zip_internal_state_tag mz_zip_internal_state;
typedef enum {
MZ_ZIP_MODE_INVALID = 0,
MZ_ZIP_MODE_READING = 1,
MZ_ZIP_MODE_WRITING = 2,
MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3
} mz_zip_mode;
typedef enum {
MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100,
MZ_ZIP_FLAG_IGNORE_PATH = 0x0200,
MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400,
MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800,
MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG =
0x1000, /* if enabled, mz_zip_reader_locate_file() will be called on each file as its validated to ensure the func finds the
file in the central dir (intended for testing) */
MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY =
0x2000, /* validate the local headers, but don't decompress the entire file and check the crc32 */
MZ_ZIP_FLAG_WRITE_ZIP64 = 0x4000, /* always use the zip64 file format, instead of the original zip file format with automatic
switch to zip64. Use as flags parameter with mz_zip_writer_init*_v2 */
MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000,
MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000
} mz_zip_flags;
typedef enum {
MZ_ZIP_TYPE_INVALID = 0,
MZ_ZIP_TYPE_USER,
MZ_ZIP_TYPE_MEMORY,
MZ_ZIP_TYPE_HEAP,
MZ_ZIP_TYPE_FILE,
MZ_ZIP_TYPE_CFILE,
MZ_ZIP_TOTAL_TYPES
} mz_zip_type;
/* miniz error codes. Be sure to update mz_zip_get_error_string() if you add or modify this enum. */
typedef enum {
MZ_ZIP_NO_ERROR = 0,
MZ_ZIP_UNDEFINED_ERROR,
MZ_ZIP_TOO_MANY_FILES,
MZ_ZIP_FILE_TOO_LARGE,
MZ_ZIP_UNSUPPORTED_METHOD,
MZ_ZIP_UNSUPPORTED_ENCRYPTION,
MZ_ZIP_UNSUPPORTED_FEATURE,
MZ_ZIP_FAILED_FINDING_CENTRAL_DIR,
MZ_ZIP_NOT_AN_ARCHIVE,
MZ_ZIP_INVALID_HEADER_OR_CORRUPTED,
MZ_ZIP_UNSUPPORTED_MULTIDISK,
MZ_ZIP_DECOMPRESSION_FAILED,
MZ_ZIP_COMPRESSION_FAILED,
MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE,
MZ_ZIP_CRC_CHECK_FAILED,
MZ_ZIP_UNSUPPORTED_CDIR_SIZE,
MZ_ZIP_ALLOC_FAILED,
MZ_ZIP_FILE_OPEN_FAILED,
MZ_ZIP_FILE_CREATE_FAILED,
MZ_ZIP_FILE_WRITE_FAILED,
MZ_ZIP_FILE_READ_FAILED,
MZ_ZIP_FILE_CLOSE_FAILED,
MZ_ZIP_FILE_SEEK_FAILED,
MZ_ZIP_FILE_STAT_FAILED,
MZ_ZIP_INVALID_PARAMETER,
MZ_ZIP_INVALID_FILENAME,
MZ_ZIP_BUF_TOO_SMALL,
MZ_ZIP_INTERNAL_ERROR,
MZ_ZIP_FILE_NOT_FOUND,
MZ_ZIP_ARCHIVE_TOO_LARGE,
MZ_ZIP_VALIDATION_FAILED,
MZ_ZIP_WRITE_CALLBACK_FAILED,
MZ_ZIP_TOTAL_ERRORS
} mz_zip_error;
typedef struct
{
mz_uint64 m_archive_size;
mz_uint64 m_central_directory_file_ofs;
/* We only support up to UINT32_MAX files in zip64 mode. */
mz_uint32 m_total_files;
mz_zip_mode m_zip_mode;
mz_zip_type m_zip_type;
mz_zip_error m_last_error;
mz_uint64 m_file_offset_alignment;
mz_alloc_func m_pAlloc;
mz_free_func m_pFree;
mz_realloc_func m_pRealloc;
void* m_pAlloc_opaque;
mz_file_read_func m_pRead;
mz_file_write_func m_pWrite;
mz_file_needs_keepalive m_pNeeds_keepalive;
void* m_pIO_opaque;
mz_zip_internal_state* m_pState;
} mz_zip_archive;
typedef struct
{
mz_zip_archive* pZip;
mz_uint flags;
int status;
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
mz_uint file_crc32;
# endif
mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, comp_remaining, out_buf_ofs, cur_file_ofs;
mz_zip_archive_file_stat file_stat;
void* pRead_buf;
void* pWrite_buf;
size_t out_blk_remain;
tinfl_decompressor inflator;
} mz_zip_reader_extract_iter_state;
/* -------- ZIP reading */
/* Inits a ZIP archive reader. */
/* These functions read and validate the archive's central directory. */
inline mz_bool mz_zip_reader_init(mz_zip_archive* pZip, mz_uint64 size, mz_uint flags);
inline mz_bool mz_zip_reader_init_mem(mz_zip_archive* pZip, const void* pMem, size_t size, mz_uint flags);
# ifndef MINIZ_NO_STDIO
/* Read a archive from a disk file. */
/* file_start_ofs is the file offset where the archive actually begins, or 0. */
/* actual_archive_size is the true total size of the archive, which may be smaller than the file's actual size on disk. If zero the
* entire file is treated as the archive. */
inline mz_bool mz_zip_reader_init_file(mz_zip_archive* pZip, const char* pFilename, mz_uint32 flags);
inline mz_bool mz_zip_reader_init_file_v2(mz_zip_archive* pZip,
const char* pFilename,
mz_uint flags,
mz_uint64 file_start_ofs,
mz_uint64 archive_size);
/* Read an archive from an already opened FILE, beginning at the current file position. */
/* The archive is assumed to be archive_size bytes long. If archive_size is < 0, then the entire rest of the file is assumed to
* contain the archive. */
/* The FILE will NOT be closed when mz_zip_reader_end() is called. */
inline mz_bool mz_zip_reader_init_cfile(mz_zip_archive* pZip, MZ_FILE* pFile, mz_uint64 archive_size, mz_uint flags);
# endif
/* Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. */
inline mz_bool mz_zip_reader_end(mz_zip_archive* pZip);
/* -------- ZIP reading or writing */
/* Clears a mz_zip_archive struct to all zeros. */
/* Important: This must be done before passing the struct to any mz_zip functions. */
inline void mz_zip_zero_struct(mz_zip_archive* pZip);
inline mz_zip_mode mz_zip_get_mode(mz_zip_archive* pZip);
inline mz_zip_type mz_zip_get_type(mz_zip_archive* pZip);
/* Returns the total number of files in the archive. */
inline mz_uint mz_zip_reader_get_num_files(mz_zip_archive* pZip);
inline mz_uint64 mz_zip_get_archive_size(mz_zip_archive* pZip);
inline mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive* pZip);
inline MZ_FILE* mz_zip_get_cfile(mz_zip_archive* pZip);
/* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. */
inline size_t mz_zip_read_archive_data(mz_zip_archive* pZip, mz_uint64 file_ofs, void* pBuf, size_t n);
/* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. These functions retrieve/manipulate this field. */
/* Note that the m_last_error functionality is not thread safe. */
inline mz_zip_error mz_zip_set_last_error(mz_zip_archive* pZip, mz_zip_error err_num);
inline mz_zip_error mz_zip_peek_last_error(mz_zip_archive* pZip);
inline mz_zip_error mz_zip_clear_last_error(mz_zip_archive* pZip);
inline mz_zip_error mz_zip_get_last_error(mz_zip_archive* pZip);
inline const char* mz_zip_get_error_string(mz_zip_error mz_err);
/* MZ_TRUE if the archive file entry is a directory entry. */
inline mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive* pZip, mz_uint file_index);
/* MZ_TRUE if the file is encrypted/strong encrypted. */
inline mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive* pZip, mz_uint file_index);
/* MZ_TRUE if the compression method is supported, and the file is not encrypted, and the file is not a compressed patch file. */
inline mz_bool mz_zip_reader_is_file_supported(mz_zip_archive* pZip, mz_uint file_index);
/* Retrieves the filename of an archive file entry. */
/* Returns the number of bytes written to pFilename, or if filename_buf_size is 0 this function returns the number of bytes needed
* to fully store the filename. */
inline mz_uint mz_zip_reader_get_filename(mz_zip_archive* pZip, mz_uint file_index, char* pFilename, mz_uint filename_buf_size);
/* Attempts to locates a file in the archive's central directory. */
/* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */
/* Returns -1 if the file cannot be found. */
inline int mz_zip_reader_locate_file(mz_zip_archive* pZip, const char* pName, const char* pComment, mz_uint flags);
inline int mz_zip_reader_locate_file_v2(mz_zip_archive* pZip,
const char* pName,
const char* pComment,
mz_uint flags,
mz_uint32* file_index);
/* Returns detailed information about an archive file entry. */
inline mz_bool mz_zip_reader_file_stat(mz_zip_archive* pZip, mz_uint file_index, mz_zip_archive_file_stat* pStat);
/* MZ_TRUE if the file is in zip64 format. */
/* A file is considered zip64 if it contained a zip64 end of central directory marker, or if it contained any zip64 extended file
* information fields in the central directory. */
inline mz_bool mz_zip_is_zip64(mz_zip_archive* pZip);
/* Returns the total central directory size in bytes. */
/* The current max supported size is <= MZ_UINT32_MAX. */
inline size_t mz_zip_get_central_dir_size(mz_zip_archive* pZip);
/* Extracts a archive file to a memory buffer using no memory allocation. */
/* There must be at least enough room on the stack to store the inflator's state (~34KB or so). */
inline mz_bool mz_zip_reader_extract_to_mem_no_alloc(mz_zip_archive* pZip,
mz_uint file_index,
void* pBuf,
size_t buf_size,
mz_uint flags,
void* pUser_read_buf,
size_t user_read_buf_size);
inline mz_bool mz_zip_reader_extract_file_to_mem_no_alloc(mz_zip_archive* pZip,
const char* pFilename,
void* pBuf,
size_t buf_size,
mz_uint flags,
void* pUser_read_buf,
size_t user_read_buf_size);
/* Extracts a archive file to a memory buffer. */
inline mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive* pZip, mz_uint file_index, void* pBuf, size_t buf_size, mz_uint flags);
inline mz_bool
mz_zip_reader_extract_file_to_mem(mz_zip_archive* pZip, const char* pFilename, void* pBuf, size_t buf_size, mz_uint flags);
/* Extracts a archive file to a dynamically allocated heap buffer. */
/* The memory will be allocated via the mz_zip_archive's alloc/realloc functions. */
/* Returns NULL and sets the last error on failure. */
inline void* mz_zip_reader_extract_to_heap(mz_zip_archive* pZip, mz_uint file_index, size_t* pSize, mz_uint flags);
inline void* mz_zip_reader_extract_file_to_heap(mz_zip_archive* pZip, const char* pFilename, size_t* pSize, mz_uint flags);
/* Extracts a archive file using a callback function to output the file's data. */
inline mz_bool mz_zip_reader_extract_to_callback(mz_zip_archive* pZip,
mz_uint file_index,
mz_file_write_func pCallback,
void* pOpaque,
mz_uint flags);
inline mz_bool mz_zip_reader_extract_file_to_callback(mz_zip_archive* pZip,
const char* pFilename,
mz_file_write_func pCallback,
void* pOpaque,
mz_uint flags);
/* Extract a file iteratively */
inline mz_zip_reader_extract_iter_state* mz_zip_reader_extract_iter_new(mz_zip_archive* pZip, mz_uint file_index, mz_uint flags);
inline mz_zip_reader_extract_iter_state*
mz_zip_reader_extract_file_iter_new(mz_zip_archive* pZip, const char* pFilename, mz_uint flags);
inline size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state* pState, void* pvBuf, size_t buf_size);
inline mz_bool mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state* pState);
# ifndef MINIZ_NO_STDIO
/* Extracts a archive file to a disk file and sets its last accessed and modified times. */
/* This function only extracts files, not archive directory records. */
inline mz_bool mz_zip_reader_extract_to_file(mz_zip_archive* pZip, mz_uint file_index, const char* pDst_filename, mz_uint flags);
inline mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive* pZip,
const char* pArchive_filename,
const char* pDst_filename,
mz_uint flags);
/* Extracts a archive file starting at the current position in the destination FILE stream. */
inline mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive* pZip, mz_uint file_index, MZ_FILE* File, mz_uint flags);
inline mz_bool
mz_zip_reader_extract_file_to_cfile(mz_zip_archive* pZip, const char* pArchive_filename, MZ_FILE* pFile, mz_uint flags);
# endif
# if 0
/* TODO */
typedef void *mz_zip_streaming_extract_state_ptr;
mz_zip_streaming_extract_state_ptr mz_zip_streaming_extract_begin(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags);
uint64_t mz_zip_streaming_extract_get_size(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
uint64_t mz_zip_streaming_extract_get_cur_ofs(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
mz_bool mz_zip_streaming_extract_seek(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, uint64_t new_ofs);
size_t mz_zip_streaming_extract_read(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, void *pBuf, size_t buf_size);
mz_bool mz_zip_streaming_extract_end(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
# endif
/* This function compares the archive's local headers, the optional local zip64 extended information block, and the optional
* descriptor following the compressed data vs. the data in the central directory. */
/* It also validates that each file can be successfully uncompressed unless the MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */
inline mz_bool mz_zip_validate_file(mz_zip_archive* pZip, mz_uint file_index, mz_uint flags);
/* Validates an entire archive by calling mz_zip_validate_file() on each file. */
inline mz_bool mz_zip_validate_archive(mz_zip_archive* pZip, mz_uint flags);
/* Misc utils/helpers, valid for ZIP reading or writing */
inline mz_bool mz_zip_validate_mem_archive(const void* pMem, size_t size, mz_uint flags, mz_zip_error* pErr);
inline mz_bool mz_zip_validate_file_archive(const char* pFilename, mz_uint flags, mz_zip_error* pErr);
/* Universal end function - calls either mz_zip_reader_end() or mz_zip_writer_end(). */
inline mz_bool mz_zip_end(mz_zip_archive* pZip);
/* -------- ZIP writing */
# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
/* Inits a ZIP archive writer. */
/*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling mz_zip_writer_init or mz_zip_writer_init_v2*/
/*The output is streamable, i.e. file_ofs in mz_file_write_func always increases only by n*/
inline mz_bool mz_zip_writer_init(mz_zip_archive* pZip, mz_uint64 existing_size);
inline mz_bool mz_zip_writer_init_v2(mz_zip_archive* pZip, mz_uint64 existing_size, mz_uint flags);
inline mz_bool mz_zip_writer_init_heap(mz_zip_archive* pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size);
inline mz_bool mz_zip_writer_init_heap_v2(mz_zip_archive* pZip,
size_t size_to_reserve_at_beginning,
size_t initial_allocation_size,
mz_uint flags);
# ifndef MINIZ_NO_STDIO
inline mz_bool mz_zip_writer_init_file(mz_zip_archive* pZip, const char* pFilename, mz_uint64 size_to_reserve_at_beginning);
inline mz_bool
mz_zip_writer_init_file_v2(mz_zip_archive* pZip, const char* pFilename, mz_uint64 size_to_reserve_at_beginning, mz_uint flags);
inline mz_bool mz_zip_writer_init_cfile(mz_zip_archive* pZip, MZ_FILE* pFile, mz_uint flags);
# endif
/* Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing
* archive. */
/* For archives opened using mz_zip_reader_init_file, pFilename must be the archive's filename so it can be reopened for writing. If
* the file can't be reopened, mz_zip_reader_end() will be called. */
/* For archives opened using mz_zip_reader_init_mem, the memory block must be growable using the realloc callback (which defaults to
* realloc unless you've overridden it). */
/* Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. */
/* Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something
* goes wrong before */
/* the archive is finalized the file's central directory will be hosed. */
inline mz_bool mz_zip_writer_init_from_reader(mz_zip_archive* pZip, const char* pFilename);
inline mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive* pZip, const char* pFilename, mz_uint flags);
/* Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. */
/* To add a directory entry, call this method with an archive name ending in a forwardslash with an empty buffer. */
/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more
* mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */
inline mz_bool mz_zip_writer_add_mem(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
mz_uint level_and_flags);
/* Like mz_zip_writer_add_mem(), except you can specify a file comment field, and optionally supply the function with already
* compressed data. */
/* uncomp_size/uncomp_crc32 are only used if the MZ_ZIP_FLAG_COMPRESSED_DATA flag is specified. */
inline mz_bool mz_zip_writer_add_mem_ex(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_uint64 uncomp_size,
mz_uint32 uncomp_crc32);
inline mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_uint64 uncomp_size,
mz_uint32 uncomp_crc32,
MZ_TIME_T* last_modified,
const char* user_extra_data_local,
mz_uint user_extra_data_local_len,
const char* user_extra_data_central,
mz_uint user_extra_data_central_len);
# ifndef MINIZ_NO_STDIO
/* Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. */
/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more
* mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */
inline mz_bool mz_zip_writer_add_file(mz_zip_archive* pZip,
const char* pArchive_name,
const char* pSrc_filename,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags);
/* Like mz_zip_writer_add_file(), except the file data is read from the specified FILE stream. */
inline mz_bool mz_zip_writer_add_cfile(mz_zip_archive* pZip,
const char* pArchive_name,
MZ_FILE* pSrc_file,
mz_uint64 size_to_add,
const MZ_TIME_T* pFile_time,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
const char* user_extra_data_local,
mz_uint user_extra_data_local_len,
const char* user_extra_data_central,
mz_uint user_extra_data_central_len);
# endif
/* Adds a file to an archive by fully cloning the data from another archive. */
/* This function fully clones the @library file's compressed data (no recompression), along with its full filename, extra data (it
* may add or modify the zip64 local header extra data field), and the optional descriptor following the compressed data. */
inline mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive* pZip, mz_zip_archive* pSource_zip, mz_uint src_file_index);
/* Finalizes the archive by writing the central directory records followed by the end of central directory record. */
/* After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). */
/* An archive must be manually finalized by calling this function for it to be valid. */
inline mz_bool mz_zip_writer_finalize_archive(mz_zip_archive* pZip);
/* Finalizes a heap archive, returning a poiner to the heap block and its size. */
/* The heap block will be allocated using the mz_zip_archive's alloc/realloc callbacks. */
inline mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive* pZip, void** ppBuf, size_t* pSize);
/* Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. */
/* Note for the archive to be valid, it *must* have been finalized before ending (this function will not do it for you). */
inline mz_bool mz_zip_writer_end(mz_zip_archive* pZip);
/* -------- Misc. high-level helper functions: */
/* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. */
/* Note this is NOT a fully safe operation. If it crashes or dies in some way your archive can be left in a screwed up state
* (without a central directory). */
/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more
* mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */
/* TODO: Perhaps add an option to leave the existing central dir in place in case the add dies? We could then truncate the file (so
* the old central dir would be at the end) if something goes wrong. */
inline mz_bool mz_zip_add_mem_to_archive_file_in_place(const char* pZip_filename,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags);
inline mz_bool mz_zip_add_mem_to_archive_file_in_place_v2(const char* pZip_filename,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_zip_error* pErr);
/* Reads a single file from an archive into a heap block. */
/* If pComment is not NULL, only the file with the specified comment will be extracted. */
/* Returns NULL on failure. */
inline void*
mz_zip_extract_archive_file_to_heap(const char* pZip_filename, const char* pArchive_name, size_t* pSize, mz_uint flags);
inline void* mz_zip_extract_archive_file_to_heap_v2(const char* pZip_filename,
const char* pArchive_name,
const char* pComment,
size_t* pSize,
mz_uint flags,
mz_zip_error* pErr);
# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */
# ifdef __cplusplus
}
# endif
#endif /* MINIZ_NO_ARCHIVE_APIS */
/**************************************************************************
*
* Copyright 2013-2014 RAD Game Tools and Valve Software
* Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
//#include "miniz.h"
typedef unsigned char mz_validate_uint16[sizeof(mz_uint16) == 2 ? 1 : -1];
typedef unsigned char mz_validate_uint32[sizeof(mz_uint32) == 4 ? 1 : -1];
typedef unsigned char mz_validate_uint64[sizeof(mz_uint64) == 8 ? 1 : -1];
#ifdef __cplusplus
extern "C"
{
#endif
/* ------------------- zlib-style API's */
inline mz_ulong mz_adler32(mz_ulong adler, const unsigned char* ptr, size_t buf_len)
{
mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16);
size_t block_len = buf_len % 5552;
if (!ptr) {
return MZ_ADLER32_INIT;
}
while (buf_len) {
for (i = 0; i + 7 < block_len; i += 8, ptr += 8) {
s1 += ptr[0], s2 += s1;
s1 += ptr[1], s2 += s1;
s1 += ptr[2], s2 += s1;
s1 += ptr[3], s2 += s1;
s1 += ptr[4], s2 += s1;
s1 += ptr[5], s2 += s1;
s1 += ptr[6], s2 += s1;
s1 += ptr[7], s2 += s1;
}
for (; i < block_len; ++i) {
s1 += *ptr++, s2 += s1;
}
s1 %= 65521U, s2 %= 65521U;
buf_len -= block_len;
block_len = 5552;
}
return (s2 << 16) + s1;
}
/* Karl Malbrain's compact CRC-32. See "A compact CCITT crc16 and crc32 C implementation that balances processor cache usage against speed":
* http://www.geocities.com/malbrain/ */
#if 0
mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len)
{
static const mz_uint32 s_crc32[16] = { 0, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c };
mz_uint32 crcu32 = (mz_uint32)crc;
if (!ptr)
return MZ_CRC32_INIT;
crcu32 = ~crcu32;
while (buf_len--)
{
mz_uint8 b = *ptr++;
crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b & 0xF)];
crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b >> 4)];
}
return ~crcu32;
}
#else
/* Faster, but larger CPU cache footprint.
*/
inline mz_ulong mz_crc32(mz_ulong crc, const mz_uint8* ptr, size_t buf_len)
{
static const mz_uint32 s_crc_table[256] = {
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4,
0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A,
0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F,
0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5,
0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6,
0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C,
0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31,
0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7,
0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8,
0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
};
mz_uint32 crc32 = (mz_uint32)crc ^ 0xFFFFFFFF;
const mz_uint8* pByte_buf = (const mz_uint8*)ptr;
while (buf_len >= 4) {
crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF];
crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[1]) & 0xFF];
crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[2]) & 0xFF];
crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[3]) & 0xFF];
pByte_buf += 4;
buf_len -= 4;
}
while (buf_len) {
crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF];
++pByte_buf;
--buf_len;
}
return ~crc32;
}
#endif
inline void mz_free(void* p)
{
MZ_FREE(p);
}
inline void* miniz_def_alloc_func(void* opaque, size_t items, size_t size)
{
(void)opaque, (void)items, (void)size;
return MZ_MALLOC(items * size);
}
inline void miniz_def_free_func(void* opaque, void* address)
{
(void)opaque, (void)address;
MZ_FREE(address);
}
inline void* miniz_def_realloc_func(void* opaque, void* address, size_t items, size_t size)
{
(void)opaque, (void)address, (void)items, (void)size;
return MZ_REALLOC(address, items * size);
}
inline const char* mz_version(void)
{
return MZ_VERSION;
}
#ifndef MINIZ_NO_ZLIB_APIS
inline int mz_deflateInit(mz_streamp pStream, int level)
{
return mz_deflateInit2(pStream, level, MZ_DEFLATED, MZ_DEFAULT_WINDOW_BITS, 9, MZ_DEFAULT_STRATEGY);
}
inline int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy)
{
tdefl_compressor* pComp;
mz_uint comp_flags = TDEFL_COMPUTE_ADLER32 | tdefl_create_comp_flags_from_zip_params(level, window_bits, strategy);
if (!pStream) {
return MZ_STREAM_ERROR;
}
if ((method != MZ_DEFLATED) || ((mem_level < 1) || (mem_level > 9)) ||
((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS)))
{
return MZ_PARAM_ERROR;
}
pStream->data_type = 0;
pStream->adler = MZ_ADLER32_INIT;
pStream->msg = NULL;
pStream->reserved = 0;
pStream->total_in = 0;
pStream->total_out = 0;
if (!pStream->zalloc) {
pStream->zalloc = miniz_def_alloc_func;
}
if (!pStream->zfree) {
pStream->zfree = miniz_def_free_func;
}
pComp = (tdefl_compressor*)pStream->zalloc(pStream->opaque, 1, sizeof(tdefl_compressor));
if (!pComp) {
return MZ_MEM_ERROR;
}
pStream->state = (struct mz_internal_state*)pComp;
if (tdefl_init(pComp, NULL, NULL, comp_flags) != TDEFL_STATUS_OKAY) {
mz_deflateEnd(pStream);
return MZ_PARAM_ERROR;
}
return MZ_OK;
}
inline int mz_deflateReset(mz_streamp pStream)
{
if ((!pStream) || (!pStream->state) || (!pStream->zalloc) || (!pStream->zfree)) {
return MZ_STREAM_ERROR;
}
pStream->total_in = pStream->total_out = 0;
tdefl_init((tdefl_compressor*)pStream->state, NULL, NULL, ((tdefl_compressor*)pStream->state)->m_flags);
return MZ_OK;
}
inline int mz_deflate(mz_streamp pStream, int flush)
{
size_t in_bytes, out_bytes;
mz_ulong orig_total_in, orig_total_out;
int mz_status = MZ_OK;
if ((!pStream) || (!pStream->state) || (flush < 0) || (flush > MZ_FINISH) || (!pStream->next_out)) {
return MZ_STREAM_ERROR;
}
if (!pStream->avail_out) {
return MZ_BUF_ERROR;
}
if (flush == MZ_PARTIAL_FLUSH) {
flush = MZ_SYNC_FLUSH;
}
if (((tdefl_compressor*)pStream->state)->m_prev_return_status == TDEFL_STATUS_DONE) {
return (flush == MZ_FINISH) ? MZ_STREAM_END : MZ_BUF_ERROR;
}
orig_total_in = pStream->total_in;
orig_total_out = pStream->total_out;
for (;;) {
tdefl_status defl_status;
in_bytes = pStream->avail_in;
out_bytes = pStream->avail_out;
defl_status = tdefl_compress((tdefl_compressor*)pStream->state,
pStream->next_in,
&in_bytes,
pStream->next_out,
&out_bytes,
(tdefl_flush)flush);
pStream->next_in += (mz_uint)in_bytes;
pStream->avail_in -= (mz_uint)in_bytes;
pStream->total_in += (mz_uint)in_bytes;
pStream->adler = tdefl_get_adler32((tdefl_compressor*)pStream->state);
pStream->next_out += (mz_uint)out_bytes;
pStream->avail_out -= (mz_uint)out_bytes;
pStream->total_out += (mz_uint)out_bytes;
if (defl_status < 0) {
mz_status = MZ_STREAM_ERROR;
break;
}
else if (defl_status == TDEFL_STATUS_DONE) {
mz_status = MZ_STREAM_END;
break;
}
else if (!pStream->avail_out) {
break;
}
else if ((!pStream->avail_in) && (flush != MZ_FINISH)) {
if ((flush) || (pStream->total_in != orig_total_in) || (pStream->total_out != orig_total_out)) {
break;
}
return MZ_BUF_ERROR; /* Can't make forward progress without some input.
*/
}
}
return mz_status;
}
inline int mz_deflateEnd(mz_streamp pStream)
{
if (!pStream) {
return MZ_STREAM_ERROR;
}
if (pStream->state) {
pStream->zfree(pStream->opaque, pStream->state);
pStream->state = NULL;
}
return MZ_OK;
}
inline mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len)
{
(void)pStream;
/* This is really over conservative. (And lame, but it's actually pretty tricky to compute a true upper bound given the way
* tdefl's blocking works.) */
return MZ_MAX(128 + (source_len * 110) / 100, 128 + source_len + ((source_len / (31 * 1024)) + 1) * 5);
}
inline int mz_compress2(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len, int level)
{
int status;
mz_stream stream;
memset(&stream, 0, sizeof(stream));
/* In case mz_ulong is 64-bits (argh I hate longs). */
if ((source_len | *pDest_len) > 0xFFFFFFFFU) {
return MZ_PARAM_ERROR;
}
stream.next_in = pSource;
stream.avail_in = (mz_uint32)source_len;
stream.next_out = pDest;
stream.avail_out = (mz_uint32)*pDest_len;
status = mz_deflateInit(&stream, level);
if (status != MZ_OK) {
return status;
}
status = mz_deflate(&stream, MZ_FINISH);
if (status != MZ_STREAM_END) {
mz_deflateEnd(&stream);
return (status == MZ_OK) ? MZ_BUF_ERROR : status;
}
*pDest_len = stream.total_out;
return mz_deflateEnd(&stream);
}
inline int mz_compress(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len)
{
return mz_compress2(pDest, pDest_len, pSource, source_len, MZ_DEFAULT_COMPRESSION);
}
inline mz_ulong mz_compressBound(mz_ulong source_len)
{
return mz_deflateBound(NULL, source_len);
}
typedef struct
{
tinfl_decompressor m_decomp;
mz_uint m_dict_ofs, m_dict_avail, m_first_call, m_has_flushed;
int m_window_bits;
mz_uint8 m_dict[TINFL_LZ_DICT_SIZE];
tinfl_status m_last_status;
} inflate_state;
inline int mz_inflateInit2(mz_streamp pStream, int window_bits)
{
inflate_state* pDecomp;
if (!pStream) {
return MZ_STREAM_ERROR;
}
if ((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS)) {
return MZ_PARAM_ERROR;
}
pStream->data_type = 0;
pStream->adler = 0;
pStream->msg = NULL;
pStream->total_in = 0;
pStream->total_out = 0;
pStream->reserved = 0;
if (!pStream->zalloc) {
pStream->zalloc = miniz_def_alloc_func;
}
if (!pStream->zfree) {
pStream->zfree = miniz_def_free_func;
}
pDecomp = (inflate_state*)pStream->zalloc(pStream->opaque, 1, sizeof(inflate_state));
if (!pDecomp) {
return MZ_MEM_ERROR;
}
pStream->state = (struct mz_internal_state*)pDecomp;
tinfl_init(&pDecomp->m_decomp);
pDecomp->m_dict_ofs = 0;
pDecomp->m_dict_avail = 0;
pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT;
pDecomp->m_first_call = 1;
pDecomp->m_has_flushed = 0;
pDecomp->m_window_bits = window_bits;
return MZ_OK;
}
inline int mz_inflateInit(mz_streamp pStream)
{
return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS);
}
inline int mz_inflate(mz_streamp pStream, int flush)
{
inflate_state* pState;
mz_uint n, first_call, decomp_flags = TINFL_FLAG_COMPUTE_ADLER32;
size_t in_bytes, out_bytes, orig_avail_in;
tinfl_status status;
if ((!pStream) || (!pStream->state)) {
return MZ_STREAM_ERROR;
}
if (flush == MZ_PARTIAL_FLUSH) {
flush = MZ_SYNC_FLUSH;
}
if ((flush) && (flush != MZ_SYNC_FLUSH) && (flush != MZ_FINISH)) {
return MZ_STREAM_ERROR;
}
pState = (inflate_state*)pStream->state;
if (pState->m_window_bits > 0) {
decomp_flags |= TINFL_FLAG_PARSE_ZLIB_HEADER;
}
orig_avail_in = pStream->avail_in;
first_call = pState->m_first_call;
pState->m_first_call = 0;
if (pState->m_last_status < 0) {
return MZ_DATA_ERROR;
}
if (pState->m_has_flushed && (flush != MZ_FINISH)) {
return MZ_STREAM_ERROR;
}
pState->m_has_flushed |= (flush == MZ_FINISH);
if ((flush == MZ_FINISH) && (first_call)) {
/* MZ_FINISH on the first call implies that the input and output buffers are large enough to hold the entire
* compressed/decompressed file. */
decomp_flags |= TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF;
in_bytes = pStream->avail_in;
out_bytes = pStream->avail_out;
status = tinfl_decompress(&pState->m_decomp,
pStream->next_in,
&in_bytes,
pStream->next_out,
pStream->next_out,
&out_bytes,
decomp_flags);
pState->m_last_status = status;
pStream->next_in += (mz_uint)in_bytes;
pStream->avail_in -= (mz_uint)in_bytes;
pStream->total_in += (mz_uint)in_bytes;
pStream->adler = tinfl_get_adler32(&pState->m_decomp);
pStream->next_out += (mz_uint)out_bytes;
pStream->avail_out -= (mz_uint)out_bytes;
pStream->total_out += (mz_uint)out_bytes;
if (status < 0) {
return MZ_DATA_ERROR;
}
else if (status != TINFL_STATUS_DONE) {
pState->m_last_status = TINFL_STATUS_FAILED;
return MZ_BUF_ERROR;
}
return MZ_STREAM_END;
}
/* flush != MZ_FINISH then we must assume there's more input. */
if (flush != MZ_FINISH) {
decomp_flags |= TINFL_FLAG_HAS_MORE_INPUT;
}
if (pState->m_dict_avail) {
n = MZ_MIN(pState->m_dict_avail, pStream->avail_out);
memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n);
pStream->next_out += n;
pStream->avail_out -= n;
pStream->total_out += n;
pState->m_dict_avail -= n;
pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1);
return ((pState->m_last_status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK;
}
for (;;) {
in_bytes = pStream->avail_in;
out_bytes = TINFL_LZ_DICT_SIZE - pState->m_dict_ofs;
status = tinfl_decompress(&pState->m_decomp,
pStream->next_in,
&in_bytes,
pState->m_dict,
pState->m_dict + pState->m_dict_ofs,
&out_bytes,
decomp_flags);
pState->m_last_status = status;
pStream->next_in += (mz_uint)in_bytes;
pStream->avail_in -= (mz_uint)in_bytes;
pStream->total_in += (mz_uint)in_bytes;
pStream->adler = tinfl_get_adler32(&pState->m_decomp);
pState->m_dict_avail = (mz_uint)out_bytes;
n = MZ_MIN(pState->m_dict_avail, pStream->avail_out);
memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n);
pStream->next_out += n;
pStream->avail_out -= n;
pStream->total_out += n;
pState->m_dict_avail -= n;
pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1);
if (status < 0) {
return MZ_DATA_ERROR; /* Stream is corrupted (there could be some uncompressed data left in the output dictionary - oh
well). */
}
else if ((status == TINFL_STATUS_NEEDS_MORE_INPUT) && (!orig_avail_in)) {
return MZ_BUF_ERROR; /* Signal caller that we can't make forward progress without supplying more input or by setting
flush to MZ_FINISH. */
}
else if (flush == MZ_FINISH) {
/* The output buffer MUST be large to hold the remaining uncompressed data when flush==MZ_FINISH. */
if (status == TINFL_STATUS_DONE) {
return pState->m_dict_avail ? MZ_BUF_ERROR : MZ_STREAM_END;
/* status here must be TINFL_STATUS_HAS_MORE_OUTPUT, which means there's at least 1 more byte on the way. If there's
* no more room left in the output buffer then something is wrong. */
}
else if (!pStream->avail_out) {
return MZ_BUF_ERROR;
}
}
else if ((status == TINFL_STATUS_DONE) || (!pStream->avail_in) || (!pStream->avail_out) || (pState->m_dict_avail)) {
break;
}
}
return ((status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK;
}
inline int mz_inflateEnd(mz_streamp pStream)
{
if (!pStream) {
return MZ_STREAM_ERROR;
}
if (pStream->state) {
pStream->zfree(pStream->opaque, pStream->state);
pStream->state = NULL;
}
return MZ_OK;
}
inline int mz_uncompress(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len)
{
mz_stream stream;
int status;
memset(&stream, 0, sizeof(stream));
/* In case mz_ulong is 64-bits (argh I hate longs). */
if ((source_len | *pDest_len) > 0xFFFFFFFFU) {
return MZ_PARAM_ERROR;
}
stream.next_in = pSource;
stream.avail_in = (mz_uint32)source_len;
stream.next_out = pDest;
stream.avail_out = (mz_uint32)*pDest_len;
status = mz_inflateInit(&stream);
if (status != MZ_OK) {
return status;
}
status = mz_inflate(&stream, MZ_FINISH);
if (status != MZ_STREAM_END) {
mz_inflateEnd(&stream);
return ((status == MZ_BUF_ERROR) && (!stream.avail_in)) ? MZ_DATA_ERROR : status;
}
*pDest_len = stream.total_out;
return mz_inflateEnd(&stream);
}
inline const char* mz_error(int err)
{
static struct
{
int m_err;
const char* m_pDesc;
} s_error_descs[] = { { MZ_OK, "" },
{ MZ_STREAM_END, "stream end" },
{ MZ_NEED_DICT, "need dictionary" },
{ MZ_ERRNO, "file error" },
{ MZ_STREAM_ERROR, "stream error" },
{ MZ_DATA_ERROR, "data error" },
{ MZ_MEM_ERROR, "out of memory" },
{ MZ_BUF_ERROR, "buf error" },
{ MZ_VERSION_ERROR, "version error" },
{ MZ_PARAM_ERROR, "parameter error" } };
mz_uint i;
for (i = 0; i < sizeof(s_error_descs) / sizeof(s_error_descs[0]); ++i) {
if (s_error_descs[i].m_err == err) {
return s_error_descs[i].m_pDesc;
}
}
return NULL;
}
#endif /*MINIZ_NO_ZLIB_APIS */
#ifdef __cplusplus
}
#endif
/*
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in @library code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org/>
*/
/**************************************************************************
*
* Copyright 2013-2014 RAD Game Tools and Valve Software
* Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif
/* ------------------- Low-level Compression (independent from all decompression API's) */
/* Purposely making these tables static for faster init and thread safety. */
static const mz_uint16 s_tdefl_len_sym[256] = {
257, 258, 259, 260, 261, 262, 263, 264, 265, 265, 266, 266, 267, 267, 268, 268, 269, 269, 269, 269, 270, 270, 270, 270,
271, 271, 271, 271, 272, 272, 272, 272, 273, 273, 273, 273, 273, 273, 273, 273, 274, 274, 274, 274, 274, 274, 274, 274,
275, 275, 275, 275, 275, 275, 275, 275, 276, 276, 276, 276, 276, 276, 276, 276, 277, 277, 277, 277, 277, 277, 277, 277,
277, 277, 277, 277, 277, 277, 277, 277, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278,
279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 279, 280, 280, 280, 280, 280, 280, 280, 280,
280, 280, 280, 280, 280, 280, 280, 280, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281,
281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 282, 282, 282, 282, 282, 282, 282, 282,
282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282,
283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283,
283, 283, 283, 283, 283, 283, 283, 283, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284,
284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 285
};
static const mz_uint8 s_tdefl_len_extra[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0
};
static const mz_uint8 s_tdefl_small_dist_sym[512] = {
0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17
};
static const mz_uint8 s_tdefl_small_dist_extra[512] = {
0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
static const mz_uint8 s_tdefl_large_dist_sym[128] = {
0, 0, 18, 19, 20, 20, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
};
static const mz_uint8 s_tdefl_large_dist_extra[128] = {
0, 0, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13
};
/* Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr to sorted values. */
typedef struct
{
mz_uint16 m_key, m_sym_index;
} tdefl_sym_freq;
static tdefl_sym_freq* tdefl_radix_sort_syms(mz_uint num_syms, tdefl_sym_freq* pSyms0, tdefl_sym_freq* pSyms1)
{
mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2];
tdefl_sym_freq *pCur_syms = pSyms0, *pNew_syms = pSyms1;
MZ_CLEAR_OBJ(hist);
for (i = 0; i < num_syms; i++) {
mz_uint freq = pSyms0[i].m_key;
hist[freq & 0xFF]++;
hist[256 + ((freq >> 8) & 0xFF)]++;
}
while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) {
total_passes--;
}
for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8) {
const mz_uint32* pHist = &hist[pass << 8];
mz_uint offsets[256], cur_ofs = 0;
for (i = 0; i < 256; i++) {
offsets[i] = cur_ofs;
cur_ofs += pHist[i];
}
for (i = 0; i < num_syms; i++) {
pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = pCur_syms[i];
}
{
tdefl_sym_freq* t = pCur_syms;
pCur_syms = pNew_syms;
pNew_syms = t;
}
}
return pCur_syms;
}
/* tdefl_calculate_minimum_redundancy() originally written by: Alistair Moffat, alistair@cs.mu.oz.au, Jyrki Katajainen,
* jyrki@diku.dk, November 1996. */
static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq* A, int n)
{
int root, leaf, next, avbl, used, dpth;
if (n == 0) {
return;
}
else if (n == 1) {
A[0].m_key = 1;
return;
}
A[0].m_key += A[1].m_key;
root = 0;
leaf = 2;
for (next = 1; next < n - 1; next++) {
if (leaf >= n || A[root].m_key < A[leaf].m_key) {
A[next].m_key = A[root].m_key;
A[root++].m_key = (mz_uint16)next;
}
else {
A[next].m_key = A[leaf++].m_key;
}
if (leaf >= n || (root < next && A[root].m_key < A[leaf].m_key)) {
A[next].m_key = (mz_uint16)(A[next].m_key + A[root].m_key);
A[root++].m_key = (mz_uint16)next;
}
else {
A[next].m_key = (mz_uint16)(A[next].m_key + A[leaf++].m_key);
}
}
A[n - 2].m_key = 0;
for (next = n - 3; next >= 0; next--) {
A[next].m_key = A[A[next].m_key].m_key + 1;
}
avbl = 1;
used = dpth = 0;
root = n - 2;
next = n - 1;
while (avbl > 0) {
while (root >= 0 && (int)A[root].m_key == dpth) {
used++;
root--;
}
while (avbl > used) {
A[next--].m_key = (mz_uint16)(dpth);
avbl--;
}
avbl = 2 * used;
dpth++;
used = 0;
}
}
/* Limits canonical Huffman code table's max code size. */
enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 };
static void tdefl_huffman_enforce_max_code_size(int* pNum_codes, int code_list_len, int max_code_size)
{
int i;
mz_uint32 total = 0;
if (code_list_len <= 1) {
return;
}
for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; i++) {
pNum_codes[max_code_size] += pNum_codes[i];
}
for (i = max_code_size; i > 0; i--) {
total += (((mz_uint32)pNum_codes[i]) << (max_code_size - i));
}
while (total != (1UL << max_code_size)) {
pNum_codes[max_code_size]--;
for (i = max_code_size - 1; i > 0; i--) {
if (pNum_codes[i]) {
pNum_codes[i]--;
pNum_codes[i + 1] += 2;
break;
}
}
total--;
}
}
static void tdefl_optimize_huffman_table(tdefl_compressor* d, int table_num, int table_len, int code_size_limit, int static_table)
{
int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE];
mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1];
MZ_CLEAR_OBJ(num_codes);
if (static_table) {
for (i = 0; i < table_len; i++) {
num_codes[d->m_huff_code_sizes[table_num][i]]++;
}
}
else {
tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], syms1[TDEFL_MAX_HUFF_SYMBOLS], *pSyms;
int num_used_syms = 0;
const mz_uint16* pSym_count = &d->m_huff_count[table_num][0];
for (i = 0; i < table_len; i++) {
if (pSym_count[i]) {
syms0[num_used_syms].m_key = (mz_uint16)pSym_count[i];
syms0[num_used_syms++].m_sym_index = (mz_uint16)i;
}
}
pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1);
tdefl_calculate_minimum_redundancy(pSyms, num_used_syms);
for (i = 0; i < num_used_syms; i++) {
num_codes[pSyms[i].m_key]++;
}
tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, code_size_limit);
MZ_CLEAR_OBJ(d->m_huff_code_sizes[table_num]);
MZ_CLEAR_OBJ(d->m_huff_codes[table_num]);
for (i = 1, j = num_used_syms; i <= code_size_limit; i++) {
for (l = num_codes[i]; l > 0; l--) {
d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = (mz_uint8)(i);
}
}
}
next_code[1] = 0;
for (j = 0, i = 2; i <= code_size_limit; i++) {
next_code[i] = j = ((j + num_codes[i - 1]) << 1);
}
for (i = 0; i < table_len; i++) {
mz_uint rev_code = 0, code, code_size;
if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) {
continue;
}
code = next_code[code_size]++;
for (l = code_size; l > 0; l--, code >>= 1) {
rev_code = (rev_code << 1) | (code & 1);
}
d->m_huff_codes[table_num][i] = (mz_uint16)rev_code;
}
}
#define TDEFL_PUT_BITS(b, l) \
do { \
mz_uint bits = b; \
mz_uint len = l; \
MZ_ASSERT(bits <= ((1U << len) - 1U)); \
d->m_bit_buffer |= (bits << d->m_bits_in); \
d->m_bits_in += len; \
while (d->m_bits_in >= 8) { \
if (d->m_pOutput_buf < d->m_pOutput_buf_end) *d->m_pOutput_buf++ = (mz_uint8)(d->m_bit_buffer); \
d->m_bit_buffer >>= 8; \
d->m_bits_in -= 8; \
} \
} \
MZ_MACRO_END
#define TDEFL_RLE_PREV_CODE_SIZE() \
{ \
if (rle_repeat_count) { \
if (rle_repeat_count < 3) { \
d->m_huff_count[2][prev_code_size] = (mz_uint16)(d->m_huff_count[2][prev_code_size] + rle_repeat_count); \
while (rle_repeat_count--) packed_code_sizes[num_packed_code_sizes++] = prev_code_size; \
} \
else { \
d->m_huff_count[2][16] = (mz_uint16)(d->m_huff_count[2][16] + 1); \
packed_code_sizes[num_packed_code_sizes++] = 16; \
packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_repeat_count - 3); \
} \
rle_repeat_count = 0; \
} \
}
#define TDEFL_RLE_ZERO_CODE_SIZE() \
{ \
if (rle_z_count) { \
if (rle_z_count < 3) { \
d->m_huff_count[2][0] = (mz_uint16)(d->m_huff_count[2][0] + rle_z_count); \
while (rle_z_count--) packed_code_sizes[num_packed_code_sizes++] = 0; \
} \
else if (rle_z_count <= 10) { \
d->m_huff_count[2][17] = (mz_uint16)(d->m_huff_count[2][17] + 1); \
packed_code_sizes[num_packed_code_sizes++] = 17; \
packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 3); \
} \
else { \
d->m_huff_count[2][18] = (mz_uint16)(d->m_huff_count[2][18] + 1); \
packed_code_sizes[num_packed_code_sizes++] = 18; \
packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 11); \
} \
rle_z_count = 0; \
} \
}
static mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
static void tdefl_start_dynamic_block(tdefl_compressor* d)
{
int num_lit_codes, num_dist_codes, num_bit_lengths;
mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, rle_z_count, rle_repeat_count, packed_code_sizes_index;
mz_uint8 code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1],
packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], prev_code_size = 0xFF;
d->m_huff_count[0][256] = 1;
tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, MZ_FALSE);
tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, MZ_FALSE);
for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) {
if (d->m_huff_code_sizes[0][num_lit_codes - 1]) {
break;
}
}
for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) {
if (d->m_huff_code_sizes[1][num_dist_codes - 1]) {
break;
}
}
memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], num_lit_codes);
memcpy(code_sizes_to_pack + num_lit_codes, &d->m_huff_code_sizes[1][0], num_dist_codes);
total_code_sizes_to_pack = num_lit_codes + num_dist_codes;
num_packed_code_sizes = 0;
rle_z_count = 0;
rle_repeat_count = 0;
memset(&d->m_huff_count[2][0], 0, sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2);
for (i = 0; i < total_code_sizes_to_pack; i++) {
mz_uint8 code_size = code_sizes_to_pack[i];
if (!code_size) {
TDEFL_RLE_PREV_CODE_SIZE();
if (++rle_z_count == 138) {
TDEFL_RLE_ZERO_CODE_SIZE();
}
}
else {
TDEFL_RLE_ZERO_CODE_SIZE();
if (code_size != prev_code_size) {
TDEFL_RLE_PREV_CODE_SIZE();
d->m_huff_count[2][code_size] = (mz_uint16)(d->m_huff_count[2][code_size] + 1);
packed_code_sizes[num_packed_code_sizes++] = code_size;
}
else if (++rle_repeat_count == 6) {
TDEFL_RLE_PREV_CODE_SIZE();
}
}
prev_code_size = code_size;
}
if (rle_repeat_count) {
TDEFL_RLE_PREV_CODE_SIZE();
}
else {
TDEFL_RLE_ZERO_CODE_SIZE();
}
tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, MZ_FALSE);
TDEFL_PUT_BITS(2, 2);
TDEFL_PUT_BITS(num_lit_codes - 257, 5);
TDEFL_PUT_BITS(num_dist_codes - 1, 5);
for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) {
if (d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[num_bit_lengths]]) {
break;
}
}
num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1));
TDEFL_PUT_BITS(num_bit_lengths - 4, 4);
for (i = 0; (int)i < num_bit_lengths; i++) TDEFL_PUT_BITS(d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[i]], 3);
for (packed_code_sizes_index = 0; packed_code_sizes_index < num_packed_code_sizes;) {
mz_uint code = packed_code_sizes[packed_code_sizes_index++];
MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2);
TDEFL_PUT_BITS(d->m_huff_codes[2][code], d->m_huff_code_sizes[2][code]);
if (code >= 16) TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], "\02\03\07"[code - 16]);
}
}
static void tdefl_start_static_block(tdefl_compressor* d)
{
mz_uint i;
mz_uint8* p = &d->m_huff_code_sizes[0][0];
for (i = 0; i <= 143; ++i) {
*p++ = 8;
}
for (; i <= 255; ++i) {
*p++ = 9;
}
for (; i <= 279; ++i) {
*p++ = 7;
}
for (; i <= 287; ++i) {
*p++ = 8;
}
memset(d->m_huff_code_sizes[1], 5, 32);
tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE);
tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE);
TDEFL_PUT_BITS(1, 2);
}
static const mz_uint mz_bitmasks[17] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF,
0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF };
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS
static mz_bool tdefl_compress_lz_codes(tdefl_compressor* d)
{
mz_uint flags;
mz_uint8* pLZ_codes;
mz_uint8* pOutput_buf = d->m_pOutput_buf;
mz_uint8* pLZ_code_buf_end = d->m_pLZ_code_buf;
mz_uint64 bit_buffer = d->m_bit_buffer;
mz_uint bits_in = d->m_bits_in;
# define TDEFL_PUT_BITS_FAST(b, l) \
{ \
bit_buffer |= (((mz_uint64)(b)) << bits_in); \
bits_in += (l); \
}
flags = 1;
for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < pLZ_code_buf_end; flags >>= 1) {
if (flags == 1) {
flags = *pLZ_codes++ | 0x100;
}
if (flags & 1) {
mz_uint s0, s1, n0, n1, sym, num_extra_bits;
mz_uint match_len = pLZ_codes[0], match_dist = *(const mz_uint16*)(pLZ_codes + 1);
pLZ_codes += 3;
MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][s_tdefl_len_sym[match_len]],
d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
TDEFL_PUT_BITS_FAST(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]);
/* This sequence coaxes MSVC into using cmov's vs. jmp's. */
s0 = s_tdefl_small_dist_sym[match_dist & 511];
n0 = s_tdefl_small_dist_extra[match_dist & 511];
s1 = s_tdefl_large_dist_sym[match_dist >> 8];
n1 = s_tdefl_large_dist_extra[match_dist >> 8];
sym = (match_dist < 512) ? s0 : s1;
num_extra_bits = (match_dist < 512) ? n0 : n1;
MZ_ASSERT(d->m_huff_code_sizes[1][sym]);
TDEFL_PUT_BITS_FAST(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]);
TDEFL_PUT_BITS_FAST(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits);
}
else {
mz_uint lit = *pLZ_codes++;
MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) {
flags >>= 1;
lit = *pLZ_codes++;
MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) {
flags >>= 1;
lit = *pLZ_codes++;
MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
}
}
}
if (pOutput_buf >= d->m_pOutput_buf_end) {
return MZ_FALSE;
}
*(mz_uint64*)pOutput_buf = bit_buffer;
pOutput_buf += (bits_in >> 3);
bit_buffer >>= (bits_in & ~7);
bits_in &= 7;
}
# undef TDEFL_PUT_BITS_FAST
d->m_pOutput_buf = pOutput_buf;
d->m_bits_in = 0;
d->m_bit_buffer = 0;
while (bits_in) {
mz_uint32 n = MZ_MIN(bits_in, 16);
TDEFL_PUT_BITS((mz_uint)bit_buffer & mz_bitmasks[n], n);
bit_buffer >>= n;
bits_in -= n;
}
TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]);
return (d->m_pOutput_buf < d->m_pOutput_buf_end);
}
#else
static mz_bool tdefl_compress_lz_codes(tdefl_compressor* d)
{
mz_uint flags;
mz_uint8* pLZ_codes;
flags = 1;
for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; flags >>= 1) {
if (flags == 1) flags = *pLZ_codes++ | 0x100;
if (flags & 1) {
mz_uint sym, num_extra_bits;
mz_uint match_len = pLZ_codes[0], match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8));
pLZ_codes += 3;
MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
TDEFL_PUT_BITS(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
TDEFL_PUT_BITS(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]);
if (match_dist < 512) {
sym = s_tdefl_small_dist_sym[match_dist];
num_extra_bits = s_tdefl_small_dist_extra[match_dist];
}
else {
sym = s_tdefl_large_dist_sym[match_dist >> 8];
num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8];
}
MZ_ASSERT(d->m_huff_code_sizes[1][sym]);
TDEFL_PUT_BITS(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]);
TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits);
}
else {
mz_uint lit = *pLZ_codes++;
MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
TDEFL_PUT_BITS(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
}
}
TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]);
return (d->m_pOutput_buf < d->m_pOutput_buf_end);
}
#endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS */
static mz_bool tdefl_compress_block(tdefl_compressor* d, mz_bool static_block)
{
if (static_block) {
tdefl_start_static_block(d);
}
else {
tdefl_start_dynamic_block(d);
}
return tdefl_compress_lz_codes(d);
}
static int tdefl_flush_block(tdefl_compressor* d, int flush)
{
mz_uint saved_bit_buf, saved_bits_in;
mz_uint8* pSaved_output_buf;
mz_bool comp_block_succeeded = MZ_FALSE;
int n, use_raw_block = ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != 0) &&
(d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size;
mz_uint8* pOutput_buf_start = ((d->m_pPut_buf_func == NULL) && ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= TDEFL_OUT_BUF_SIZE))
? ((mz_uint8*)d->m_pOut_buf + d->m_out_buf_ofs)
: d->m_output_buf;
d->m_pOutput_buf = pOutput_buf_start;
d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16;
MZ_ASSERT(!d->m_output_flush_remaining);
d->m_output_flush_ofs = 0;
d->m_output_flush_remaining = 0;
*d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> d->m_num_flags_left);
d->m_pLZ_code_buf -= (d->m_num_flags_left == 8);
if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index)) {
TDEFL_PUT_BITS(0x78, 8);
TDEFL_PUT_BITS(0x01, 8);
}
TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1);
pSaved_output_buf = d->m_pOutput_buf;
saved_bit_buf = d->m_bit_buffer;
saved_bits_in = d->m_bits_in;
if (!use_raw_block) {
comp_block_succeeded = tdefl_compress_block(d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || (d->m_total_lz_bytes < 48));
}
/* If the block gets expanded, forget the current contents of the output buffer and send a raw block instead. */
if (((use_raw_block) || ((d->m_total_lz_bytes) && ((d->m_pOutput_buf - pSaved_output_buf + 1U) >= d->m_total_lz_bytes))) &&
((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size))
{
mz_uint i;
d->m_pOutput_buf = pSaved_output_buf;
d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
TDEFL_PUT_BITS(0, 2);
if (d->m_bits_in) {
TDEFL_PUT_BITS(0, 8 - d->m_bits_in);
}
for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF) {
TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16);
}
for (i = 0; i < d->m_total_lz_bytes; ++i) {
TDEFL_PUT_BITS(d->m_dict[(d->m_lz_code_buf_dict_pos + i) & TDEFL_LZ_DICT_SIZE_MASK], 8);
}
}
/* Check for the extremely unlikely (if not impossible) case of the compressed block not fitting into the output buffer when
* using dynamic codes. */
else if (!comp_block_succeeded) {
d->m_pOutput_buf = pSaved_output_buf;
d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
tdefl_compress_block(d, MZ_TRUE);
}
if (flush) {
if (flush == TDEFL_FINISH) {
if (d->m_bits_in) {
TDEFL_PUT_BITS(0, 8 - d->m_bits_in);
}
if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) {
mz_uint i, a = d->m_adler32;
for (i = 0; i < 4; i++) {
TDEFL_PUT_BITS((a >> 24) & 0xFF, 8);
a <<= 8;
}
}
}
else {
mz_uint i, z = 0;
TDEFL_PUT_BITS(0, 3);
if (d->m_bits_in) {
TDEFL_PUT_BITS(0, 8 - d->m_bits_in);
}
for (i = 2; i; --i, z ^= 0xFFFF) {
TDEFL_PUT_BITS(z & 0xFFFF, 16);
}
}
}
MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end);
memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);
d->m_pLZ_code_buf = d->m_lz_code_buf + 1;
d->m_pLZ_flags = d->m_lz_code_buf;
d->m_num_flags_left = 8;
d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes;
d->m_total_lz_bytes = 0;
d->m_block_index++;
if ((n = (int)(d->m_pOutput_buf - pOutput_buf_start)) != 0) {
if (d->m_pPut_buf_func) {
*d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8*)d->m_pIn_buf;
if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, d->m_pPut_buf_user)) {
return (d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED);
}
}
else if (pOutput_buf_start == d->m_output_buf) {
int bytes_to_copy = (int)MZ_MIN((size_t)n, (size_t)(*d->m_pOut_buf_size - d->m_out_buf_ofs));
memcpy((mz_uint8*)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf, bytes_to_copy);
d->m_out_buf_ofs += bytes_to_copy;
if ((n -= bytes_to_copy) != 0) {
d->m_output_flush_ofs = bytes_to_copy;
d->m_output_flush_remaining = n;
}
}
else {
d->m_out_buf_ofs += n;
}
}
return d->m_output_flush_remaining;
}
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES
# ifdef MINIZ_UNALIGNED_USE_MEMCPY
static inline mz_uint16 TDEFL_READ_UNALIGNED_WORD(const mz_uint8* p)
{
mz_uint16 ret;
memcpy(&ret, p, sizeof(mz_uint16));
return ret;
}
static inline mz_uint16 TDEFL_READ_UNALIGNED_WORD2(const mz_uint16* p)
{
mz_uint16 ret;
memcpy(&ret, p, sizeof(mz_uint16));
return ret;
}
# else
# define TDEFL_READ_UNALIGNED_WORD(p) *(const mz_uint16*)(p)
# define TDEFL_READ_UNALIGNED_WORD2(p) *(const mz_uint16*)(p)
# endif
static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor* d,
mz_uint lookahead_pos,
mz_uint max_dist,
mz_uint max_match_len,
mz_uint* pMatch_dist,
mz_uint* pMatch_len)
{
mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos,
probe_len;
mz_uint num_probes_left = d->m_max_probes[match_len >= 32];
const mz_uint16 *s = (const mz_uint16*)(d->m_dict + pos), *p, *q;
mz_uint16 c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]), s01 = TDEFL_READ_UNALIGNED_WORD2(s);
MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN);
if (max_match_len <= match_len) {
return;
}
for (;;) {
for (;;) {
if (--num_probes_left == 0) {
return;
}
# define TDEFL_PROBE \
next_probe_pos = d->m_next[probe_pos]; \
if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \
probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \
if (TDEFL_READ_UNALIGNED_WORD(&d->m_dict[probe_pos + match_len - 1]) == c01) break;
TDEFL_PROBE;
TDEFL_PROBE;
TDEFL_PROBE;
}
if (!dist) {
break;
}
q = (const mz_uint16*)(d->m_dict + probe_pos);
if (TDEFL_READ_UNALIGNED_WORD2(q) != s01) {
continue;
}
p = s;
probe_len = 32;
do {
}
while ((TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && (--probe_len > 0));
if (!probe_len) {
*pMatch_dist = dist;
*pMatch_len = MZ_MIN(max_match_len, (mz_uint)TDEFL_MAX_MATCH_LEN);
break;
}
else if ((probe_len = ((mz_uint)(p - s) * 2) + (mz_uint)(*(const mz_uint8*)p == *(const mz_uint8*)q)) > match_len) {
*pMatch_dist = dist;
if ((*pMatch_len = match_len = MZ_MIN(max_match_len, probe_len)) == max_match_len) {
break;
}
c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]);
}
}
}
#else
static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor* d,
mz_uint lookahead_pos,
mz_uint max_dist,
mz_uint max_match_len,
mz_uint* pMatch_dist,
mz_uint* pMatch_len)
{
mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len;
mz_uint num_probes_left = d->m_max_probes[match_len >= 32];
const mz_uint8 *s = d->m_dict + pos, *p, *q;
mz_uint8 c0 = d->m_dict[pos + match_len], c1 = d->m_dict[pos + match_len - 1];
MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN);
if (max_match_len <= match_len) return;
for (;;) {
for (;;) {
if (--num_probes_left == 0) return;
# define TDEFL_PROBE \
next_probe_pos = d->m_next[probe_pos]; \
if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \
probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \
if ((d->m_dict[probe_pos + match_len] == c0) && (d->m_dict[probe_pos + match_len - 1] == c1)) break;
TDEFL_PROBE;
TDEFL_PROBE;
TDEFL_PROBE;
}
if (!dist) break;
p = s;
q = d->m_dict + probe_pos;
for (probe_len = 0; probe_len < max_match_len; probe_len++)
if (*p++ != *q++) break;
if (probe_len > match_len) {
*pMatch_dist = dist;
if ((*pMatch_len = match_len = probe_len) == max_match_len) return;
c0 = d->m_dict[pos + match_len];
c1 = d->m_dict[pos + match_len - 1];
}
}
}
#endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES */
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
static mz_bool tdefl_compress_fast(tdefl_compressor* d)
{
/* Faster, minimally featured LZRW1-style match+parse loop with better register utilization. Intended for applications where raw
* throughput is valued more highly than ratio. */
mz_uint lookahead_pos = d->m_lookahead_pos, lookahead_size = d->m_lookahead_size, dict_size = d->m_dict_size,
total_lz_bytes = d->m_total_lz_bytes, num_flags_left = d->m_num_flags_left;
mz_uint8 *pLZ_code_buf = d->m_pLZ_code_buf, *pLZ_flags = d->m_pLZ_flags;
mz_uint cur_pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK;
while ((d->m_src_buf_left) || ((d->m_flush) && (lookahead_size))) {
const mz_uint TDEFL_COMP_FAST_LOOKAHEAD_SIZE = 4096;
mz_uint dst_pos = (lookahead_pos + lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK;
mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(d->m_src_buf_left, TDEFL_COMP_FAST_LOOKAHEAD_SIZE - lookahead_size);
d->m_src_buf_left -= num_bytes_to_process;
lookahead_size += num_bytes_to_process;
while (num_bytes_to_process) {
mz_uint32 n = MZ_MIN(TDEFL_LZ_DICT_SIZE - dst_pos, num_bytes_to_process);
memcpy(d->m_dict + dst_pos, d->m_pSrc, n);
if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) {
memcpy(d->m_dict + TDEFL_LZ_DICT_SIZE + dst_pos, d->m_pSrc, MZ_MIN(n, (TDEFL_MAX_MATCH_LEN - 1) - dst_pos));
}
d->m_pSrc += n;
dst_pos = (dst_pos + n) & TDEFL_LZ_DICT_SIZE_MASK;
num_bytes_to_process -= n;
}
dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - lookahead_size, dict_size);
if ((!d->m_flush) && (lookahead_size < TDEFL_COMP_FAST_LOOKAHEAD_SIZE)) {
break;
}
while (lookahead_size >= 4) {
mz_uint cur_match_dist, cur_match_len = 1;
mz_uint8* pCur_dict = d->m_dict + cur_pos;
mz_uint first_trigram = (*(const mz_uint32*)pCur_dict) & 0xFFFFFF;
mz_uint hash = (first_trigram ^ (first_trigram >> (24 - (TDEFL_LZ_HASH_BITS - 8)))) & TDEFL_LEVEL1_HASH_SIZE_MASK;
mz_uint probe_pos = d->m_hash[hash];
d->m_hash[hash] = (mz_uint16)lookahead_pos;
if (((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= dict_size) &&
((*(const mz_uint32*)(d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & 0xFFFFFF) == first_trigram))
{
const mz_uint16* p = (const mz_uint16*)pCur_dict;
const mz_uint16* q = (const mz_uint16*)(d->m_dict + probe_pos);
mz_uint32 probe_len = 32;
do {
}
while ((TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) &&
(TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && (--probe_len > 0));
cur_match_len =
((mz_uint)(p - (const mz_uint16*)pCur_dict) * 2) + (mz_uint)(*(const mz_uint8*)p == *(const mz_uint8*)q);
if (!probe_len) {
cur_match_len = cur_match_dist ? TDEFL_MAX_MATCH_LEN : 0;
}
if ((cur_match_len < TDEFL_MIN_MATCH_LEN) ||
((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U * 1024U))) {
cur_match_len = 1;
*pLZ_code_buf++ = (mz_uint8)first_trigram;
*pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
d->m_huff_count[0][(mz_uint8)first_trigram]++;
}
else {
mz_uint32 s0, s1;
cur_match_len = MZ_MIN(cur_match_len, lookahead_size);
MZ_ASSERT((cur_match_len >= TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 1) &&
(cur_match_dist <= TDEFL_LZ_DICT_SIZE));
cur_match_dist--;
pLZ_code_buf[0] = (mz_uint8)(cur_match_len - TDEFL_MIN_MATCH_LEN);
*(mz_uint16*)(&pLZ_code_buf[1]) = (mz_uint16)cur_match_dist;
pLZ_code_buf += 3;
*pLZ_flags = (mz_uint8)((*pLZ_flags >> 1) | 0x80);
s0 = s_tdefl_small_dist_sym[cur_match_dist & 511];
s1 = s_tdefl_large_dist_sym[cur_match_dist >> 8];
d->m_huff_count[1][(cur_match_dist < 512) ? s0 : s1]++;
d->m_huff_count[0][s_tdefl_len_sym[cur_match_len - TDEFL_MIN_MATCH_LEN]]++;
}
}
else {
*pLZ_code_buf++ = (mz_uint8)first_trigram;
*pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
d->m_huff_count[0][(mz_uint8)first_trigram]++;
}
if (--num_flags_left == 0) {
num_flags_left = 8;
pLZ_flags = pLZ_code_buf++;
}
total_lz_bytes += cur_match_len;
lookahead_pos += cur_match_len;
dict_size = MZ_MIN(dict_size + cur_match_len, (mz_uint)TDEFL_LZ_DICT_SIZE);
cur_pos = (cur_pos + cur_match_len) & TDEFL_LZ_DICT_SIZE_MASK;
MZ_ASSERT(lookahead_size >= cur_match_len);
lookahead_size -= cur_match_len;
if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) {
int n;
d->m_lookahead_pos = lookahead_pos;
d->m_lookahead_size = lookahead_size;
d->m_dict_size = dict_size;
d->m_total_lz_bytes = total_lz_bytes;
d->m_pLZ_code_buf = pLZ_code_buf;
d->m_pLZ_flags = pLZ_flags;
d->m_num_flags_left = num_flags_left;
if ((n = tdefl_flush_block(d, 0)) != 0) {
return (n < 0) ? MZ_FALSE : MZ_TRUE;
}
total_lz_bytes = d->m_total_lz_bytes;
pLZ_code_buf = d->m_pLZ_code_buf;
pLZ_flags = d->m_pLZ_flags;
num_flags_left = d->m_num_flags_left;
}
}
while (lookahead_size) {
mz_uint8 lit = d->m_dict[cur_pos];
total_lz_bytes++;
*pLZ_code_buf++ = lit;
*pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
if (--num_flags_left == 0) {
num_flags_left = 8;
pLZ_flags = pLZ_code_buf++;
}
d->m_huff_count[0][lit]++;
lookahead_pos++;
dict_size = MZ_MIN(dict_size + 1, (mz_uint)TDEFL_LZ_DICT_SIZE);
cur_pos = (cur_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK;
lookahead_size--;
if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) {
int n;
d->m_lookahead_pos = lookahead_pos;
d->m_lookahead_size = lookahead_size;
d->m_dict_size = dict_size;
d->m_total_lz_bytes = total_lz_bytes;
d->m_pLZ_code_buf = pLZ_code_buf;
d->m_pLZ_flags = pLZ_flags;
d->m_num_flags_left = num_flags_left;
if ((n = tdefl_flush_block(d, 0)) != 0) {
return (n < 0) ? MZ_FALSE : MZ_TRUE;
}
total_lz_bytes = d->m_total_lz_bytes;
pLZ_code_buf = d->m_pLZ_code_buf;
pLZ_flags = d->m_pLZ_flags;
num_flags_left = d->m_num_flags_left;
}
}
}
d->m_lookahead_pos = lookahead_pos;
d->m_lookahead_size = lookahead_size;
d->m_dict_size = dict_size;
d->m_total_lz_bytes = total_lz_bytes;
d->m_pLZ_code_buf = pLZ_code_buf;
d->m_pLZ_flags = pLZ_flags;
d->m_num_flags_left = num_flags_left;
return MZ_TRUE;
}
#endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN */
static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor* d, mz_uint8 lit)
{
d->m_total_lz_bytes++;
*d->m_pLZ_code_buf++ = lit;
*d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> 1);
if (--d->m_num_flags_left == 0) {
d->m_num_flags_left = 8;
d->m_pLZ_flags = d->m_pLZ_code_buf++;
}
d->m_huff_count[0][lit]++;
}
static MZ_FORCEINLINE void tdefl_record_match(tdefl_compressor* d, mz_uint match_len, mz_uint match_dist)
{
mz_uint32 s0, s1;
MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && (match_dist <= TDEFL_LZ_DICT_SIZE));
d->m_total_lz_bytes += match_len;
d->m_pLZ_code_buf[0] = (mz_uint8)(match_len - TDEFL_MIN_MATCH_LEN);
match_dist -= 1;
d->m_pLZ_code_buf[1] = (mz_uint8)(match_dist & 0xFF);
d->m_pLZ_code_buf[2] = (mz_uint8)(match_dist >> 8);
d->m_pLZ_code_buf += 3;
*d->m_pLZ_flags = (mz_uint8)((*d->m_pLZ_flags >> 1) | 0x80);
if (--d->m_num_flags_left == 0) {
d->m_num_flags_left = 8;
d->m_pLZ_flags = d->m_pLZ_code_buf++;
}
s0 = s_tdefl_small_dist_sym[match_dist & 511];
s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127];
d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++;
if (match_len >= TDEFL_MIN_MATCH_LEN) {
d->m_huff_count[0][s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++;
}
}
static mz_bool tdefl_compress_normal(tdefl_compressor* d)
{
const mz_uint8* pSrc = d->m_pSrc;
size_t src_buf_left = d->m_src_buf_left;
tdefl_flush flush = d->m_flush;
while ((src_buf_left) || ((flush) && (d->m_lookahead_size))) {
mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos;
/* Update dictionary and hash chains. Keeps the lookahead size equal to TDEFL_MAX_MATCH_LEN. */
if ((d->m_lookahead_size + d->m_dict_size) >= (TDEFL_MIN_MATCH_LEN - 1)) {
mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK,
ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2;
mz_uint hash = (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^
d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK];
mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size);
const mz_uint8* pSrc_end = pSrc + num_bytes_to_process;
src_buf_left -= num_bytes_to_process;
d->m_lookahead_size += num_bytes_to_process;
while (pSrc != pSrc_end) {
mz_uint8 c = *pSrc++;
d->m_dict[dst_pos] = c;
if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) {
d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
}
hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1);
d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash];
d->m_hash[hash] = (mz_uint16)(ins_pos);
dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK;
ins_pos++;
}
}
else {
while ((src_buf_left) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) {
mz_uint8 c = *pSrc++;
mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK;
src_buf_left--;
d->m_dict[dst_pos] = c;
if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) {
d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
}
if ((++d->m_lookahead_size + d->m_dict_size) >= TDEFL_MIN_MATCH_LEN) {
mz_uint ins_pos = d->m_lookahead_pos + (d->m_lookahead_size - 1) - 2;
mz_uint hash = ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << (TDEFL_LZ_HASH_SHIFT * 2)) ^
(d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ c) &
(TDEFL_LZ_HASH_SIZE - 1);
d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash];
d->m_hash[hash] = (mz_uint16)(ins_pos);
}
}
}
d->m_dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, d->m_dict_size);
if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) {
break;
}
/* Simple lazy/greedy parsing state machine. */
len_to_move = 1;
cur_match_dist = 0;
cur_match_len = d->m_saved_match_len ? d->m_saved_match_len : (TDEFL_MIN_MATCH_LEN - 1);
cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK;
if (d->m_flags & (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS)) {
if ((d->m_dict_size) && (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) {
mz_uint8 c = d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK];
cur_match_len = 0;
while (cur_match_len < d->m_lookahead_size) {
if (d->m_dict[cur_pos + cur_match_len] != c) {
break;
}
cur_match_len++;
}
if (cur_match_len < TDEFL_MIN_MATCH_LEN) {
cur_match_len = 0;
}
else {
cur_match_dist = 1;
}
}
}
else {
tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, d->m_lookahead_size, &cur_match_dist, &cur_match_len);
}
if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U * 1024U)) || (cur_pos == cur_match_dist) ||
((d->m_flags & TDEFL_FILTER_MATCHES) && (cur_match_len <= 5)))
{
cur_match_dist = cur_match_len = 0;
}
if (d->m_saved_match_len) {
if (cur_match_len > d->m_saved_match_len) {
tdefl_record_literal(d, (mz_uint8)d->m_saved_lit);
if (cur_match_len >= 128) {
tdefl_record_match(d, cur_match_len, cur_match_dist);
d->m_saved_match_len = 0;
len_to_move = cur_match_len;
}
else {
d->m_saved_lit = d->m_dict[cur_pos];
d->m_saved_match_dist = cur_match_dist;
d->m_saved_match_len = cur_match_len;
}
}
else {
tdefl_record_match(d, d->m_saved_match_len, d->m_saved_match_dist);
len_to_move = d->m_saved_match_len - 1;
d->m_saved_match_len = 0;
}
}
else if (!cur_match_dist) {
tdefl_record_literal(d, d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]);
}
else if ((d->m_greedy_parsing) || (d->m_flags & TDEFL_RLE_MATCHES) || (cur_match_len >= 128)) {
tdefl_record_match(d, cur_match_len, cur_match_dist);
len_to_move = cur_match_len;
}
else {
d->m_saved_lit = d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)];
d->m_saved_match_dist = cur_match_dist;
d->m_saved_match_len = cur_match_len;
}
/* Move the lookahead forward by len_to_move bytes. */
d->m_lookahead_pos += len_to_move;
MZ_ASSERT(d->m_lookahead_size >= len_to_move);
d->m_lookahead_size -= len_to_move;
d->m_dict_size = MZ_MIN(d->m_dict_size + len_to_move, (mz_uint)TDEFL_LZ_DICT_SIZE);
/* Check if it's time to flush the current LZ codes to the internal output buffer. */
if ((d->m_pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) ||
((d->m_total_lz_bytes > 31 * 1024) &&
(((((mz_uint)(d->m_pLZ_code_buf - d->m_lz_code_buf) * 115) >> 7) >= d->m_total_lz_bytes) ||
(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))))
{
int n;
d->m_pSrc = pSrc;
d->m_src_buf_left = src_buf_left;
if ((n = tdefl_flush_block(d, 0)) != 0) {
return (n < 0) ? MZ_FALSE : MZ_TRUE;
}
}
}
d->m_pSrc = pSrc;
d->m_src_buf_left = src_buf_left;
return MZ_TRUE;
}
static tdefl_status tdefl_flush_output_buffer(tdefl_compressor* d)
{
if (d->m_pIn_buf_size) {
*d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8*)d->m_pIn_buf;
}
if (d->m_pOut_buf_size) {
size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, d->m_output_flush_remaining);
memcpy((mz_uint8*)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf + d->m_output_flush_ofs, n);
d->m_output_flush_ofs += (mz_uint)n;
d->m_output_flush_remaining -= (mz_uint)n;
d->m_out_buf_ofs += n;
*d->m_pOut_buf_size = d->m_out_buf_ofs;
}
return (d->m_finished && !d->m_output_flush_remaining) ? TDEFL_STATUS_DONE : TDEFL_STATUS_OKAY;
}
inline tdefl_status tdefl_compress(tdefl_compressor* d,
const void* pIn_buf,
size_t* pIn_buf_size,
void* pOut_buf,
size_t* pOut_buf_size,
tdefl_flush flush)
{
if (!d) {
if (pIn_buf_size) {
*pIn_buf_size = 0;
}
if (pOut_buf_size) {
*pOut_buf_size = 0;
}
return TDEFL_STATUS_BAD_PARAM;
}
d->m_pIn_buf = pIn_buf;
d->m_pIn_buf_size = pIn_buf_size;
d->m_pOut_buf = pOut_buf;
d->m_pOut_buf_size = pOut_buf_size;
d->m_pSrc = (const mz_uint8*)(pIn_buf);
d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0;
d->m_out_buf_ofs = 0;
d->m_flush = flush;
if (((d->m_pPut_buf_func != NULL) == ((pOut_buf != NULL) || (pOut_buf_size != NULL))) ||
(d->m_prev_return_status != TDEFL_STATUS_OKAY) || (d->m_wants_to_finish && (flush != TDEFL_FINISH)) ||
(pIn_buf_size && *pIn_buf_size && !pIn_buf) || (pOut_buf_size && *pOut_buf_size && !pOut_buf))
{
if (pIn_buf_size) {
*pIn_buf_size = 0;
}
if (pOut_buf_size) {
*pOut_buf_size = 0;
}
return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM);
}
d->m_wants_to_finish |= (flush == TDEFL_FINISH);
if ((d->m_output_flush_remaining) || (d->m_finished)) {
return (d->m_prev_return_status = tdefl_flush_output_buffer(d));
}
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
if (((d->m_flags & TDEFL_MAX_PROBES_MASK) == 1) && ((d->m_flags & TDEFL_GREEDY_PARSING_FLAG) != 0) &&
((d->m_flags & (TDEFL_FILTER_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS | TDEFL_RLE_MATCHES)) == 0))
{
if (!tdefl_compress_fast(d)) {
return d->m_prev_return_status;
}
}
else
#endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN */
{
if (!tdefl_compress_normal(d)) {
return d->m_prev_return_status;
}
}
if ((d->m_flags & (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && (pIn_buf)) {
d->m_adler32 = (mz_uint32)mz_adler32(d->m_adler32, (const mz_uint8*)pIn_buf, d->m_pSrc - (const mz_uint8*)pIn_buf);
}
if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && (!d->m_output_flush_remaining)) {
if (tdefl_flush_block(d, flush) < 0) {
return d->m_prev_return_status;
}
d->m_finished = (flush == TDEFL_FINISH);
if (flush == TDEFL_FULL_FLUSH) {
MZ_CLEAR_OBJ(d->m_hash);
MZ_CLEAR_OBJ(d->m_next);
d->m_dict_size = 0;
}
}
return (d->m_prev_return_status = tdefl_flush_output_buffer(d));
}
inline tdefl_status tdefl_compress_buffer(tdefl_compressor* d, const void* pIn_buf, size_t in_buf_size, tdefl_flush flush)
{
MZ_ASSERT(d->m_pPut_buf_func);
return tdefl_compress(d, pIn_buf, &in_buf_size, NULL, NULL, flush);
}
inline tdefl_status tdefl_init(tdefl_compressor* d, tdefl_put_buf_func_ptr pPut_buf_func, void* pPut_buf_user, int flags)
{
d->m_pPut_buf_func = pPut_buf_func;
d->m_pPut_buf_user = pPut_buf_user;
d->m_flags = (mz_uint)(flags);
d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3;
d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0;
d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3;
if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) MZ_CLEAR_OBJ(d->m_hash);
d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = 0;
d->m_output_flush_ofs = d->m_output_flush_remaining = d->m_finished = d->m_block_index = d->m_bit_buffer =
d->m_wants_to_finish = 0;
d->m_pLZ_code_buf = d->m_lz_code_buf + 1;
d->m_pLZ_flags = d->m_lz_code_buf;
d->m_num_flags_left = 8;
d->m_pOutput_buf = d->m_output_buf;
d->m_pOutput_buf_end = d->m_output_buf;
d->m_prev_return_status = TDEFL_STATUS_OKAY;
d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0;
d->m_adler32 = 1;
d->m_pIn_buf = NULL;
d->m_pOut_buf = NULL;
d->m_pIn_buf_size = NULL;
d->m_pOut_buf_size = NULL;
d->m_flush = TDEFL_NO_FLUSH;
d->m_pSrc = NULL;
d->m_src_buf_left = 0;
d->m_out_buf_ofs = 0;
if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) MZ_CLEAR_OBJ(d->m_dict);
memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);
return TDEFL_STATUS_OKAY;
}
inline tdefl_status tdefl_get_prev_return_status(tdefl_compressor* d)
{
return d->m_prev_return_status;
}
inline mz_uint32 tdefl_get_adler32(tdefl_compressor* d)
{
return d->m_adler32;
}
inline mz_bool tdefl_compress_mem_to_output(const void* pBuf,
size_t buf_len,
tdefl_put_buf_func_ptr pPut_buf_func,
void* pPut_buf_user,
int flags)
{
tdefl_compressor* pComp;
mz_bool succeeded;
if (((buf_len) && (!pBuf)) || (!pPut_buf_func)) {
return MZ_FALSE;
}
pComp = (tdefl_compressor*)MZ_MALLOC(sizeof(tdefl_compressor));
if (!pComp) {
return MZ_FALSE;
}
succeeded = (tdefl_init(pComp, pPut_buf_func, pPut_buf_user, flags) == TDEFL_STATUS_OKAY);
succeeded = succeeded && (tdefl_compress_buffer(pComp, pBuf, buf_len, TDEFL_FINISH) == TDEFL_STATUS_DONE);
MZ_FREE(pComp);
return succeeded;
}
typedef struct
{
size_t m_size, m_capacity;
mz_uint8* m_pBuf;
mz_bool m_expandable;
} tdefl_output_buffer;
static mz_bool tdefl_output_buffer_putter(const void* pBuf, int len, void* pUser)
{
tdefl_output_buffer* p = (tdefl_output_buffer*)pUser;
size_t new_size = p->m_size + len;
if (new_size > p->m_capacity) {
size_t new_capacity = p->m_capacity;
mz_uint8* pNew_buf;
if (!p->m_expandable) {
return MZ_FALSE;
}
do {
new_capacity = MZ_MAX(128U, new_capacity << 1U);
}
while (new_size > new_capacity);
pNew_buf = (mz_uint8*)MZ_REALLOC(p->m_pBuf, new_capacity);
if (!pNew_buf) {
return MZ_FALSE;
}
p->m_pBuf = pNew_buf;
p->m_capacity = new_capacity;
}
memcpy((mz_uint8*)p->m_pBuf + p->m_size, pBuf, len);
p->m_size = new_size;
return MZ_TRUE;
}
inline void* tdefl_compress_mem_to_heap(const void* pSrc_buf, size_t src_buf_len, size_t* pOut_len, int flags)
{
tdefl_output_buffer out_buf;
MZ_CLEAR_OBJ(out_buf);
if (!pOut_len) {
return MZ_FALSE;
}
else {
*pOut_len = 0;
}
out_buf.m_expandable = MZ_TRUE;
if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) {
return NULL;
}
*pOut_len = out_buf.m_size;
return out_buf.m_pBuf;
}
inline size_t tdefl_compress_mem_to_mem(void* pOut_buf, size_t out_buf_len, const void* pSrc_buf, size_t src_buf_len, int flags)
{
tdefl_output_buffer out_buf;
MZ_CLEAR_OBJ(out_buf);
if (!pOut_buf) {
return 0;
}
out_buf.m_pBuf = (mz_uint8*)pOut_buf;
out_buf.m_capacity = out_buf_len;
if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) {
return 0;
}
return out_buf.m_size;
}
static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 };
/* level may actually range from [0,10] (10 is a "hidden" max level, where we want a bit more compression and it's fine if
* throughput to fall off a cliff on some files). */
inline mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy)
{
mz_uint comp_flags =
s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) : MZ_DEFAULT_LEVEL] | ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0);
if (window_bits > 0) {
comp_flags |= TDEFL_WRITE_ZLIB_HEADER;
}
if (!level) {
comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS;
}
else if (strategy == MZ_FILTERED) {
comp_flags |= TDEFL_FILTER_MATCHES;
}
else if (strategy == MZ_HUFFMAN_ONLY) {
comp_flags &= ~TDEFL_MAX_PROBES_MASK;
}
else if (strategy == MZ_FIXED) {
comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS;
}
else if (strategy == MZ_RLE) {
comp_flags |= TDEFL_RLE_MATCHES;
}
return comp_flags;
}
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable : 4204) /* nonstandard extension used : non-constant aggregate initializer (also supported by GNU C and C99, \
so no big deal) */
#endif
/* Simple PNG writer function by Alex Evans, 2011. Released into the public domain: https://gist.github.com/908299, more context at
http://altdevblogaday.org/2011/04/06/a-smaller-jpg-encoder/.
This is actually a modification of Alex's original code so PNG files generated by this function pass pngcheck. */
inline void* tdefl_write_image_to_png_file_in_memory_ex(const void* pImage,
int w,
int h,
int num_chans,
size_t* pLen_out,
mz_uint level,
mz_bool flip)
{
/* Using a local copy of this array here in case MINIZ_NO_ZLIB_APIS was defined. */
static const mz_uint s_tdefl_png_num_probes[11] = { 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 };
tdefl_compressor* pComp = (tdefl_compressor*)MZ_MALLOC(sizeof(tdefl_compressor));
tdefl_output_buffer out_buf;
int i, bpl = w * num_chans, y, z;
mz_uint32 c;
*pLen_out = 0;
if (!pComp) {
return NULL;
}
MZ_CLEAR_OBJ(out_buf);
out_buf.m_expandable = MZ_TRUE;
out_buf.m_capacity = 57 + MZ_MAX(64, (1 + bpl) * h);
if (NULL == (out_buf.m_pBuf = (mz_uint8*)MZ_MALLOC(out_buf.m_capacity))) {
MZ_FREE(pComp);
return NULL;
}
/* write dummy header */
for (z = 41; z; --z) {
tdefl_output_buffer_putter(&z, 1, &out_buf);
}
/* compress image data */
tdefl_init(pComp, tdefl_output_buffer_putter, &out_buf, s_tdefl_png_num_probes[MZ_MIN(10, level)] | TDEFL_WRITE_ZLIB_HEADER);
for (y = 0; y < h; ++y) {
tdefl_compress_buffer(pComp, &z, 1, TDEFL_NO_FLUSH);
tdefl_compress_buffer(pComp, (mz_uint8*)pImage + (flip ? (h - 1 - y) : y) * bpl, bpl, TDEFL_NO_FLUSH);
}
if (tdefl_compress_buffer(pComp, NULL, 0, TDEFL_FINISH) != TDEFL_STATUS_DONE) {
MZ_FREE(pComp);
MZ_FREE(out_buf.m_pBuf);
return NULL;
}
/* write real header */
*pLen_out = out_buf.m_size - 41;
{
static const mz_uint8 chans[] = { 0x00, 0x00, 0x04, 0x02, 0x06 };
mz_uint8 pnghdr[41] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48,
0x44, 0x52, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x49, 0x44, 0x41, 0x54 };
pnghdr[18] = (mz_uint8)(w >> 8);
pnghdr[19] = (mz_uint8)w;
pnghdr[22] = (mz_uint8)(h >> 8);
pnghdr[23] = (mz_uint8)h;
pnghdr[25] = chans[num_chans];
pnghdr[33] = (mz_uint8)(*pLen_out >> 24);
pnghdr[34] = (mz_uint8)(*pLen_out >> 16);
pnghdr[35] = (mz_uint8)(*pLen_out >> 8);
pnghdr[36] = (mz_uint8)*pLen_out;
c = (mz_uint32)mz_crc32(MZ_CRC32_INIT, pnghdr + 12, 17);
for (i = 0; i < 4; ++i, c <<= 8) {
((mz_uint8*)(pnghdr + 29))[i] = (mz_uint8)(c >> 24);
}
memcpy(out_buf.m_pBuf, pnghdr, 41);
}
/* write footer (IDAT CRC-32, followed by IEND chunk) */
if (!tdefl_output_buffer_putter("\0\0\0\0\0\0\0\0\x49\x45\x4e\x44\xae\x42\x60\x82", 16, &out_buf)) {
*pLen_out = 0;
MZ_FREE(pComp);
MZ_FREE(out_buf.m_pBuf);
return NULL;
}
c = (mz_uint32)mz_crc32(MZ_CRC32_INIT, out_buf.m_pBuf + 41 - 4, *pLen_out + 4);
for (i = 0; i < 4; ++i, c <<= 8) {
(out_buf.m_pBuf + out_buf.m_size - 16)[i] = (mz_uint8)(c >> 24);
}
/* compute final size of file, grab compressed data buffer and return */
*pLen_out += 57;
MZ_FREE(pComp);
return out_buf.m_pBuf;
}
inline void* tdefl_write_image_to_png_file_in_memory(const void* pImage, int w, int h, int num_chans, size_t* pLen_out)
{
/* Level 6 corresponds to TDEFL_DEFAULT_MAX_PROBES or MZ_DEFAULT_LEVEL (but we can't depend on MZ_DEFAULT_LEVEL being available
* in case the zlib API's where #defined out) */
return tdefl_write_image_to_png_file_in_memory_ex(pImage, w, h, num_chans, pLen_out, 6, MZ_FALSE);
}
/* Allocate the tdefl_compressor and tinfl_decompressor structures in C so that */
/* non-C language bindings to tdefL_ and tinfl_ API don't need to worry about */
/* structure size and allocation mechanism. */
inline tdefl_compressor* tdefl_compressor_alloc()
{
return (tdefl_compressor*)MZ_MALLOC(sizeof(tdefl_compressor));
}
inline void tdefl_compressor_free(tdefl_compressor* pComp)
{
MZ_FREE(pComp);
}
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#ifdef __cplusplus
}
#endif
/**************************************************************************
*
* Copyright 2013-2014 RAD Game Tools and Valve Software
* Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif
/* ------------------- Low-level Decompression (completely independent from all compression API's) */
#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l)
#define TINFL_MEMSET(p, c, l) memset(p, c, l)
#define TINFL_CR_BEGIN \
switch (r->m_state) { \
case 0:
#define TINFL_CR_RETURN(state_index, result) \
do { \
status = result; \
r->m_state = state_index; \
goto common_exit; \
case state_index:; \
} \
MZ_MACRO_END
#define TINFL_CR_RETURN_FOREVER(state_index, result) \
do { \
for (;;) { \
TINFL_CR_RETURN(state_index, result); \
} \
} \
MZ_MACRO_END
#define TINFL_CR_FINISH }
#define TINFL_GET_BYTE(state_index, c) \
do { \
while (pIn_buf_cur >= pIn_buf_end) { \
TINFL_CR_RETURN(state_index, \
(decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) ? TINFL_STATUS_NEEDS_MORE_INPUT \
: TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS); \
} \
c = *pIn_buf_cur++; \
} \
MZ_MACRO_END
#define TINFL_NEED_BITS(state_index, n) \
do { \
mz_uint c; \
TINFL_GET_BYTE(state_index, c); \
bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); \
num_bits += 8; \
} \
while (num_bits < (mz_uint)(n))
#define TINFL_SKIP_BITS(state_index, n) \
do { \
if (num_bits < (mz_uint)(n)) { \
TINFL_NEED_BITS(state_index, n); \
} \
bit_buf >>= (n); \
num_bits -= (n); \
} \
MZ_MACRO_END
#define TINFL_GET_BITS(state_index, b, n) \
do { \
if (num_bits < (mz_uint)(n)) { \
TINFL_NEED_BITS(state_index, n); \
} \
b = bit_buf & ((1 << (n)) - 1); \
bit_buf >>= (n); \
num_bits -= (n); \
} \
MZ_MACRO_END
/* TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes remaining in the input buffer falls below 2. */
/* It reads just enough bytes from the input stream that are needed to decode the next Huffman code (and absolutely no more). It works by
* trying to fully decode a */
/* Huffman code by using whatever bits are currently present in the bit buffer. If this fails, it reads another byte, and tries again until
* it succeeds or until the */
/* bit buffer contains >=15 bits (deflate's max. Huffman code size). */
#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \
do { \
temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \
if (temp >= 0) { \
code_len = temp >> 9; \
if ((code_len) && (num_bits >= code_len)) break; \
} \
else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \
code_len = TINFL_FAST_LOOKUP_BITS; \
do { \
temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \
} \
while ((temp < 0) && (num_bits >= (code_len + 1))); \
if (temp >= 0) break; \
} \
TINFL_GET_BYTE(state_index, c); \
bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); \
num_bits += 8; \
} \
while (num_bits < 15);
/* TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex than you would initially expect because the zlib API expects
* the decompressor to never read */
/* beyond the final byte of the deflate stream. (In other words, when this macro wants to read another byte from the input, it REALLY needs
* another byte in order to fully */
/* decode the next Huffman code.) Handling this properly is particularly important on raw deflate (non-zlib) streams, which aren't followed
* by a byte aligned adler-32. */
/* The slow path is only executed at the very end of the input buffer. */
/* v1.16: The original macro handled the case at the very end of the passed-in input buffer, but we also need to handle the case where the
* user passes in 1+zillion bytes */
/* following the deflate data and our non-conservative read-ahead path won't kick in here on this code. This is much trickier. */
#define TINFL_HUFF_DECODE(state_index, sym, pHuff) \
do { \
int temp; \
mz_uint code_len, c; \
if (num_bits < 15) { \
if ((pIn_buf_end - pIn_buf_cur) < 2) { \
TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \
} \
else { \
bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); \
pIn_buf_cur += 2; \
num_bits += 16; \
} \
} \
if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) \
code_len = temp >> 9, temp &= 511; \
else { \
code_len = TINFL_FAST_LOOKUP_BITS; \
do { \
temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \
} \
while (temp < 0); \
} \
sym = temp; \
bit_buf >>= code_len; \
num_bits -= code_len; \
} \
MZ_MACRO_END
inline tinfl_status tinfl_decompress(tinfl_decompressor* r,
const mz_uint8* pIn_buf_next,
size_t* pIn_buf_size,
mz_uint8* pOut_buf_start,
mz_uint8* pOut_buf_next,
size_t* pOut_buf_size,
const mz_uint32 decomp_flags)
{
static const int s_length_base[31] = { 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 };
static const int s_length_extra[31] = { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0 };
static const int s_dist_base[32] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33,
49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537,
2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 0, 0 };
static const int s_dist_extra[32] = { 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6,
6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13 };
static const mz_uint8 s_length_dezigzag[19] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
static const int s_min_table_sizes[3] = { 257, 1, 4 };
tinfl_status status = TINFL_STATUS_FAILED;
mz_uint32 num_bits, dist, counter, num_extra;
tinfl_bit_buf_t bit_buf;
const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = pIn_buf_next + *pIn_buf_size;
mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = pOut_buf_next + *pOut_buf_size;
size_t out_buf_size_mask = (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)
? (size_t)-1
: ((pOut_buf_next - pOut_buf_start) + *pOut_buf_size) - 1,
dist_from_out_buf_start;
/* Ensure the output buffer's size is a power of 2, unless the output buffer is large enough to hold the entire output file (in
* which case it doesn't matter). */
if (((out_buf_size_mask + 1) & out_buf_size_mask) || (pOut_buf_next < pOut_buf_start)) {
*pIn_buf_size = *pOut_buf_size = 0;
return TINFL_STATUS_BAD_PARAM;
}
num_bits = r->m_num_bits;
bit_buf = r->m_bit_buf;
dist = r->m_dist;
counter = r->m_counter;
num_extra = r->m_num_extra;
dist_from_out_buf_start = r->m_dist_from_out_buf_start;
TINFL_CR_BEGIN
bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = r->m_zhdr1 = 0;
r->m_z_adler32 = r->m_check_adler32 = 1;
if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) {
TINFL_GET_BYTE(1, r->m_zhdr0);
TINFL_GET_BYTE(2, r->m_zhdr1);
counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8));
if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) {
counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) ||
((out_buf_size_mask + 1) < (size_t)(1U << (8U + (r->m_zhdr0 >> 4)))));
}
if (counter) {
TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED);
}
}
do {
TINFL_GET_BITS(3, r->m_final, 3);
r->m_type = r->m_final >> 1;
if (r->m_type == 0) {
TINFL_SKIP_BITS(5, num_bits & 7);
for (counter = 0; counter < 4; ++counter) {
if (num_bits)
TINFL_GET_BITS(6, r->m_raw_header[counter], 8);
else
TINFL_GET_BYTE(7, r->m_raw_header[counter]);
}
if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) !=
(mz_uint)(0xFFFF ^ (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) {
TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED);
}
while ((counter) && (num_bits)) {
TINFL_GET_BITS(51, dist, 8);
while (pOut_buf_cur >= pOut_buf_end) {
TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT);
}
*pOut_buf_cur++ = (mz_uint8)dist;
counter--;
}
while (counter) {
size_t n;
while (pOut_buf_cur >= pOut_buf_end) {
TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT);
}
while (pIn_buf_cur >= pIn_buf_end) {
TINFL_CR_RETURN(38,
(decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) ? TINFL_STATUS_NEEDS_MORE_INPUT
: TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS);
}
n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), (size_t)(pIn_buf_end - pIn_buf_cur)), counter);
TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n);
pIn_buf_cur += n;
pOut_buf_cur += n;
counter -= (mz_uint)n;
}
}
else if (r->m_type == 3) {
TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED);
}
else {
if (r->m_type == 1) {
mz_uint8* p = r->m_tables[0].m_code_size;
mz_uint i;
r->m_table_sizes[0] = 288;
r->m_table_sizes[1] = 32;
TINFL_MEMSET(r->m_tables[1].m_code_size, 5, 32);
for (i = 0; i <= 143; ++i) {
*p++ = 8;
}
for (; i <= 255; ++i) {
*p++ = 9;
}
for (; i <= 279; ++i) {
*p++ = 7;
}
for (; i <= 287; ++i) {
*p++ = 8;
}
}
else {
for (counter = 0; counter < 3; counter++) {
TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]);
r->m_table_sizes[counter] += s_min_table_sizes[counter];
}
MZ_CLEAR_OBJ(r->m_tables[2].m_code_size);
for (counter = 0; counter < r->m_table_sizes[2]; counter++) {
mz_uint s;
TINFL_GET_BITS(14, s, 3);
r->m_tables[2].m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s;
}
r->m_table_sizes[2] = 19;
}
for (; (int)r->m_type >= 0; r->m_type--) {
int tree_next, tree_cur;
tinfl_huff_table* pTable;
mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16];
pTable = &r->m_tables[r->m_type];
MZ_CLEAR_OBJ(total_syms);
MZ_CLEAR_OBJ(pTable->m_look_up);
MZ_CLEAR_OBJ(pTable->m_tree);
for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) {
total_syms[pTable->m_code_size[i]]++;
}
used_syms = 0, total = 0;
next_code[0] = next_code[1] = 0;
for (i = 1; i <= 15; ++i) {
used_syms += total_syms[i];
next_code[i + 1] = (total = ((total + total_syms[i]) << 1));
}
if ((65536 != total) && (used_syms > 1)) {
TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED);
}
for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index) {
mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index];
if (!code_size) {
continue;
}
cur_code = next_code[code_size]++;
for (l = code_size; l > 0; l--, cur_code >>= 1) {
rev_code = (rev_code << 1) | (cur_code & 1);
}
if (code_size <= TINFL_FAST_LOOKUP_BITS) {
mz_int16 k = (mz_int16)((code_size << 9) | sym_index);
while (rev_code < TINFL_FAST_LOOKUP_SIZE) {
pTable->m_look_up[rev_code] = k;
rev_code += (1 << code_size);
}
continue;
}
if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) {
pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next;
tree_cur = tree_next;
tree_next -= 2;
}
rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1);
for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--) {
tree_cur -= ((rev_code >>= 1) & 1);
if (!pTable->m_tree[-tree_cur - 1]) {
pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next;
tree_cur = tree_next;
tree_next -= 2;
}
else {
tree_cur = pTable->m_tree[-tree_cur - 1];
}
}
tree_cur -= ((rev_code >>= 1) & 1);
pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index;
}
if (r->m_type == 2) {
for (counter = 0; counter < (r->m_table_sizes[0] + r->m_table_sizes[1]);) {
mz_uint s;
TINFL_HUFF_DECODE(16, dist, &r->m_tables[2]);
if (dist < 16) {
r->m_len_codes[counter++] = (mz_uint8)dist;
continue;
}
if ((dist == 16) && (!counter)) {
TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED);
}
num_extra = "\02\03\07"[dist - 16];
TINFL_GET_BITS(18, s, num_extra);
s += "\03\03\013"[dist - 16];
TINFL_MEMSET(r->m_len_codes + counter, (dist == 16) ? r->m_len_codes[counter - 1] : 0, s);
counter += s;
}
if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter) {
TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED);
}
TINFL_MEMCPY(r->m_tables[0].m_code_size, r->m_len_codes, r->m_table_sizes[0]);
TINFL_MEMCPY(r->m_tables[1].m_code_size, r->m_len_codes + r->m_table_sizes[0], r->m_table_sizes[1]);
}
}
for (;;) {
mz_uint8* pSrc;
for (;;) {
if (((pIn_buf_end - pIn_buf_cur) < 4) || ((pOut_buf_end - pOut_buf_cur) < 2)) {
TINFL_HUFF_DECODE(23, counter, &r->m_tables[0]);
if (counter >= 256) {
break;
}
while (pOut_buf_cur >= pOut_buf_end) {
TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT);
}
*pOut_buf_cur++ = (mz_uint8)counter;
}
else {
int sym2;
mz_uint code_len;
#if TINFL_USE_64BIT_BITBUF
if (num_bits < 30) {
bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE32(pIn_buf_cur)) << num_bits);
pIn_buf_cur += 4;
num_bits += 32;
}
#else
if (num_bits < 15) {
bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits);
pIn_buf_cur += 2;
num_bits += 16;
}
#endif
if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) {
code_len = sym2 >> 9;
}
else {
code_len = TINFL_FAST_LOOKUP_BITS;
do {
sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)];
}
while (sym2 < 0);
}
counter = sym2;
bit_buf >>= code_len;
num_bits -= code_len;
if (counter & 256) {
break;
}
#if !TINFL_USE_64BIT_BITBUF
if (num_bits < 15) {
bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits);
pIn_buf_cur += 2;
num_bits += 16;
}
#endif
if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) {
code_len = sym2 >> 9;
}
else {
code_len = TINFL_FAST_LOOKUP_BITS;
do {
sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)];
}
while (sym2 < 0);
}
bit_buf >>= code_len;
num_bits -= code_len;
pOut_buf_cur[0] = (mz_uint8)counter;
if (sym2 & 256) {
pOut_buf_cur++;
counter = sym2;
break;
}
pOut_buf_cur[1] = (mz_uint8)sym2;
pOut_buf_cur += 2;
}
}
if ((counter &= 511) == 256) {
break;
}
num_extra = s_length_extra[counter - 257];
counter = s_length_base[counter - 257];
if (num_extra) {
mz_uint extra_bits;
TINFL_GET_BITS(25, extra_bits, num_extra);
counter += extra_bits;
}
TINFL_HUFF_DECODE(26, dist, &r->m_tables[1]);
num_extra = s_dist_extra[dist];
dist = s_dist_base[dist];
if (num_extra) {
mz_uint extra_bits;
TINFL_GET_BITS(27, extra_bits, num_extra);
dist += extra_bits;
}
dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start;
if ((dist > dist_from_out_buf_start) && (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) {
TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED);
}
pSrc = pOut_buf_start + ((dist_from_out_buf_start - dist) & out_buf_size_mask);
if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end) {
while (counter--) {
while (pOut_buf_cur >= pOut_buf_end) {
TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT);
}
*pOut_buf_cur++ = pOut_buf_start[(dist_from_out_buf_start++ - dist) & out_buf_size_mask];
}
continue;
}
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES
else if ((counter >= 9) && (counter <= dist)) {
const mz_uint8* pSrc_end = pSrc + (counter & ~7);
do {
((mz_uint32*)pOut_buf_cur)[0] = ((const mz_uint32*)pSrc)[0];
((mz_uint32*)pOut_buf_cur)[1] = ((const mz_uint32*)pSrc)[1];
pOut_buf_cur += 8;
}
while ((pSrc += 8) < pSrc_end);
if ((counter &= 7) < 3) {
if (counter) {
pOut_buf_cur[0] = pSrc[0];
if (counter > 1) {
pOut_buf_cur[1] = pSrc[1];
}
pOut_buf_cur += counter;
}
continue;
}
}
#endif
while (counter > 2) {
pOut_buf_cur[0] = pSrc[0];
pOut_buf_cur[1] = pSrc[1];
pOut_buf_cur[2] = pSrc[2];
pOut_buf_cur += 3;
pSrc += 3;
counter -= 3;
}
if (counter > 0) {
pOut_buf_cur[0] = pSrc[0];
if (counter > 1) {
pOut_buf_cur[1] = pSrc[1];
}
pOut_buf_cur += counter;
}
}
}
}
while (!(r->m_final & 1));
/* Ensure byte alignment and put back any bytes from the bitbuf if we've looked ahead too far on gzip, or other Deflate streams
* followed by arbitrary data. */
/* I'm being super conservative here. A number of simplifications can be made to the byte alignment part, and the Adler32 check
* shouldn't ever need to worry about reading from the bitbuf now. */
TINFL_SKIP_BITS(32, num_bits & 7);
while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) {
--pIn_buf_cur;
num_bits -= 8;
}
bit_buf &= (tinfl_bit_buf_t)((((mz_uint64)1) << num_bits) - (mz_uint64)1);
MZ_ASSERT(!num_bits); /* if this assert fires then we've read beyond the end of non-deflate/zlib streams with following data
(such as gzip streams). */
if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) {
for (counter = 0; counter < 4; ++counter) {
mz_uint s;
if (num_bits)
TINFL_GET_BITS(41, s, 8);
else
TINFL_GET_BYTE(42, s);
r->m_z_adler32 = (r->m_z_adler32 << 8) | s;
}
}
TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE);
TINFL_CR_FINISH
common_exit:
/* As long as we aren't telling the caller that we NEED more input to make forward progress: */
/* Put back any bytes from the bitbuf in case we've looked ahead too far on gzip, or other Deflate streams followed by arbitrary
* data. */
/* We need to be very careful here to NOT push back any bytes we definitely know we need to make forward progress, though, or
* we'll lock the caller up into an inf loop. */
if ((status != TINFL_STATUS_NEEDS_MORE_INPUT) && (status != TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS)) {
while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) {
--pIn_buf_cur;
num_bits -= 8;
}
}
r->m_num_bits = num_bits;
r->m_bit_buf = bit_buf & (tinfl_bit_buf_t)((((mz_uint64)1) << num_bits) - (mz_uint64)1);
r->m_dist = dist;
r->m_counter = counter;
r->m_num_extra = num_extra;
r->m_dist_from_out_buf_start = dist_from_out_buf_start;
*pIn_buf_size = pIn_buf_cur - pIn_buf_next;
*pOut_buf_size = pOut_buf_cur - pOut_buf_next;
if ((decomp_flags & (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && (status >= 0)) {
const mz_uint8* ptr = pOut_buf_next;
size_t buf_len = *pOut_buf_size;
mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, s2 = r->m_check_adler32 >> 16;
size_t block_len = buf_len % 5552;
while (buf_len) {
for (i = 0; i + 7 < block_len; i += 8, ptr += 8) {
s1 += ptr[0], s2 += s1;
s1 += ptr[1], s2 += s1;
s1 += ptr[2], s2 += s1;
s1 += ptr[3], s2 += s1;
s1 += ptr[4], s2 += s1;
s1 += ptr[5], s2 += s1;
s1 += ptr[6], s2 += s1;
s1 += ptr[7], s2 += s1;
}
for (; i < block_len; ++i) {
s1 += *ptr++, s2 += s1;
}
s1 %= 65521U, s2 %= 65521U;
buf_len -= block_len;
block_len = 5552;
}
r->m_check_adler32 = (s2 << 16) + s1;
if ((status == TINFL_STATUS_DONE) && (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) &&
(r->m_check_adler32 != r->m_z_adler32)) {
status = TINFL_STATUS_ADLER32_MISMATCH;
}
}
return status;
}
/* Higher level helper functions. */
inline void* tinfl_decompress_mem_to_heap(const void* pSrc_buf, size_t src_buf_len, size_t* pOut_len, int flags)
{
tinfl_decompressor decomp;
void * pBuf = NULL, *pNew_buf;
size_t src_buf_ofs = 0, out_buf_capacity = 0;
*pOut_len = 0;
tinfl_init(&decomp);
for (;;) {
size_t src_buf_size = src_buf_len - src_buf_ofs, dst_buf_size = out_buf_capacity - *pOut_len, new_out_buf_capacity;
tinfl_status status = tinfl_decompress(&decomp,
(const mz_uint8*)pSrc_buf + src_buf_ofs,
&src_buf_size,
(mz_uint8*)pBuf,
pBuf ? (mz_uint8*)pBuf + *pOut_len : NULL,
&dst_buf_size,
(flags & ~TINFL_FLAG_HAS_MORE_INPUT) | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF);
if ((status < 0) || (status == TINFL_STATUS_NEEDS_MORE_INPUT)) {
MZ_FREE(pBuf);
*pOut_len = 0;
return NULL;
}
src_buf_ofs += src_buf_size;
*pOut_len += dst_buf_size;
if (status == TINFL_STATUS_DONE) {
break;
}
new_out_buf_capacity = out_buf_capacity * 2;
if (new_out_buf_capacity < 128) {
new_out_buf_capacity = 128;
}
pNew_buf = MZ_REALLOC(pBuf, new_out_buf_capacity);
if (!pNew_buf) {
MZ_FREE(pBuf);
*pOut_len = 0;
return NULL;
}
pBuf = pNew_buf;
out_buf_capacity = new_out_buf_capacity;
}
return pBuf;
}
inline size_t tinfl_decompress_mem_to_mem(void* pOut_buf, size_t out_buf_len, const void* pSrc_buf, size_t src_buf_len, int flags)
{
tinfl_decompressor decomp;
tinfl_status status;
tinfl_init(&decomp);
status = tinfl_decompress(&decomp,
(const mz_uint8*)pSrc_buf,
&src_buf_len,
(mz_uint8*)pOut_buf,
(mz_uint8*)pOut_buf,
&out_buf_len,
(flags & ~TINFL_FLAG_HAS_MORE_INPUT) | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF);
return (status != TINFL_STATUS_DONE) ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED : out_buf_len;
}
inline int tinfl_decompress_mem_to_callback(const void* pIn_buf,
size_t* pIn_buf_size,
tinfl_put_buf_func_ptr pPut_buf_func,
void* pPut_buf_user,
int flags)
{
int result = 0;
tinfl_decompressor decomp;
mz_uint8* pDict = (mz_uint8*)MZ_MALLOC(TINFL_LZ_DICT_SIZE);
size_t in_buf_ofs = 0, dict_ofs = 0;
if (!pDict) {
return TINFL_STATUS_FAILED;
}
tinfl_init(&decomp);
for (;;) {
size_t in_buf_size = *pIn_buf_size - in_buf_ofs, dst_buf_size = TINFL_LZ_DICT_SIZE - dict_ofs;
tinfl_status status = tinfl_decompress(&decomp,
(const mz_uint8*)pIn_buf + in_buf_ofs,
&in_buf_size,
pDict,
pDict + dict_ofs,
&dst_buf_size,
(flags & ~(TINFL_FLAG_HAS_MORE_INPUT | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)));
in_buf_ofs += in_buf_size;
if ((dst_buf_size) && (!(*pPut_buf_func)(pDict + dict_ofs, (int)dst_buf_size, pPut_buf_user))) {
break;
}
if (status != TINFL_STATUS_HAS_MORE_OUTPUT) {
result = (status == TINFL_STATUS_DONE);
break;
}
dict_ofs = (dict_ofs + dst_buf_size) & (TINFL_LZ_DICT_SIZE - 1);
}
MZ_FREE(pDict);
*pIn_buf_size = in_buf_ofs;
return result;
}
inline tinfl_decompressor* tinfl_decompressor_alloc()
{
tinfl_decompressor* pDecomp = (tinfl_decompressor*)MZ_MALLOC(sizeof(tinfl_decompressor));
if (pDecomp) tinfl_init(pDecomp);
return pDecomp;
}
inline void tinfl_decompressor_free(tinfl_decompressor* pDecomp)
{
MZ_FREE(pDecomp);
}
#ifdef __cplusplus
}
#endif
/**************************************************************************
*
* Copyright 2013-2014 RAD Game Tools and Valve Software
* Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
* Copyright 2016 Martin Raiber
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#ifndef MINIZ_NO_ARCHIVE_APIS
# ifdef __cplusplus
extern "C"
{
# endif
/* ------------------- .ZIP archive reading */
# ifdef MINIZ_NO_STDIO
# define MZ_FILE void*
# else
# include <sys/stat.h>
# if defined(_MSC_VER) || defined(__MINGW64__)
static FILE* mz_fopen(const char* pFilename, const char* pMode)
{
FILE* pFile = nowide::fopen(pFilename, pMode);
return pFile;
}
static FILE* mz_freopen(const char* pPath, const char* pMode, FILE* pStream)
{
FILE* pFile = nowide::freopen(pPath, pMode, pStream);
if (!pFile) return NULL;
return pFile;
}
# ifndef MINIZ_NO_TIME
# include <sys/utime.h>
# endif
# define MZ_FOPEN mz_fopen
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# define MZ_FTELL64 _ftelli64
# define MZ_FSEEK64 _fseeki64
# define MZ_FILE_STAT_STRUCT _stat
# define MZ_FILE_STAT _stat
# define MZ_FFLUSH fflush
# define MZ_FREOPEN mz_freopen
# define MZ_DELETE_FILE remove
# elif defined(__MINGW32__)
# ifndef MINIZ_NO_TIME
# include <sys/utime.h>
# endif
# define MZ_FOPEN(f, m) nowide::fopen(f, m)
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# define MZ_FTELL64 ftello64
# define MZ_FSEEK64 fseeko64
# define MZ_FILE_STAT_STRUCT _stat
# define MZ_FILE_STAT _stat
# define MZ_FFLUSH fflush
# define MZ_FREOPEN(f, m, s) nowide::freopen(f, m, s)
# define MZ_DELETE_FILE nowide::remove
# elif defined(__TINYC__)
# ifndef MINIZ_NO_TIME
# include <sys/utime.h>
# endif
# define MZ_FOPEN(f, m) nowide::fopen(f, m)
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# define MZ_FTELL64 ftell
# define MZ_FSEEK64 fseek
# define MZ_FILE_STAT_STRUCT stat
# define MZ_FILE_STAT stat
# define MZ_FFLUSH fflush
# define MZ_FREOPEN(f, m, s) nowide::freopen(f, m, s)
# define MZ_DELETE_FILE nowide::remove
# elif defined(__GNUC__) && _LARGEFILE64_SOURCE
# ifndef MINIZ_NO_TIME
# include <utime.h>
# endif
# define MZ_FOPEN(f, m) fopen64(f, m)
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# define MZ_FTELL64 ftello64
# define MZ_FSEEK64 fseeko64
# define MZ_FILE_STAT_STRUCT stat64
# define MZ_FILE_STAT stat64
# define MZ_FFLUSH fflush
# define MZ_FREOPEN(p, m, s) freopen64(p, m, s)
# define MZ_DELETE_FILE remove
# elif defined(__APPLE__)
# ifndef MINIZ_NO_TIME
# include <utime.h>
# endif
# define MZ_FOPEN(f, m) nowide::fopen(f, m)
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# define MZ_FTELL64 ftello
# define MZ_FSEEK64 fseeko
# define MZ_FILE_STAT_STRUCT stat
# define MZ_FILE_STAT stat
# define MZ_FFLUSH fflush
# define MZ_FREOPEN(p, m, s) nowide::freopen(p, m, s)
# define MZ_DELETE_FILE nowide::remove
# else
# pragma message("Using fopen, ftello, fseeko, stat() etc. path for file I/O - this path may not support large files.")
# ifndef MINIZ_NO_TIME
# include <utime.h>
# endif
# define MZ_FOPEN(f, m) nowide::fopen(f, m)
# define MZ_FCLOSE fclose
# define MZ_FREAD fread
# define MZ_FWRITE fwrite
# ifdef __STRICT_ANSI__
# define MZ_FTELL64 ftell
# define MZ_FSEEK64 fseek
# else
# define MZ_FTELL64 ftello
# define MZ_FSEEK64 fseeko
# endif
# define MZ_FILE_STAT_STRUCT stat
# define MZ_FILE_STAT stat
# define MZ_FFLUSH fflush
# define MZ_FREOPEN(f, m, s) nowide::freopen(f, m, s)
# define MZ_DELETE_FILE nowide::remove
# endif /* #ifdef _MSC_VER */
# endif /* #ifdef MINIZ_NO_STDIO */
# define MZ_TOLOWER(c) ((((c) >= 'A') && ((c) <= 'Z')) ? ((c) - 'A' + 'a') : (c))
/* Various ZIP archive enums. To completely avoid cross platform compiler alignment and platform endian issues, miniz.c doesn't use
* structs for any of this stuff. */
enum {
/* ZIP archive identifiers and record sizes */
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06054b50,
MZ_ZIP_CENTRAL_DIR_HEADER_SIG = 0x02014b50,
MZ_ZIP_LOCAL_DIR_HEADER_SIG = 0x04034b50,
MZ_ZIP_LOCAL_DIR_HEADER_SIZE = 30,
MZ_ZIP_CENTRAL_DIR_HEADER_SIZE = 46,
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE = 22,
/* ZIP64 archive identifier and record sizes */
MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06064b50,
MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG = 0x07064b50,
MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE = 56,
MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE = 20,
MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID = 0x0001,
MZ_ZIP_DATA_DESCRIPTOR_ID = 0x08074b50,
MZ_ZIP_DATA_DESCRIPTER_SIZE64 = 24,
MZ_ZIP_DATA_DESCRIPTER_SIZE32 = 16,
/* Central directory header record offsets */
MZ_ZIP_CDH_SIG_OFS = 0,
MZ_ZIP_CDH_VERSION_MADE_BY_OFS = 4,
MZ_ZIP_CDH_VERSION_NEEDED_OFS = 6,
MZ_ZIP_CDH_BIT_FLAG_OFS = 8,
MZ_ZIP_CDH_METHOD_OFS = 10,
MZ_ZIP_CDH_FILE_TIME_OFS = 12,
MZ_ZIP_CDH_FILE_DATE_OFS = 14,
MZ_ZIP_CDH_CRC32_OFS = 16,
MZ_ZIP_CDH_COMPRESSED_SIZE_OFS = 20,
MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS = 24,
MZ_ZIP_CDH_FILENAME_LEN_OFS = 28,
MZ_ZIP_CDH_EXTRA_LEN_OFS = 30,
MZ_ZIP_CDH_COMMENT_LEN_OFS = 32,
MZ_ZIP_CDH_DISK_START_OFS = 34,
MZ_ZIP_CDH_INTERNAL_ATTR_OFS = 36,
MZ_ZIP_CDH_EXTERNAL_ATTR_OFS = 38,
MZ_ZIP_CDH_LOCAL_HEADER_OFS = 42,
/* Local directory header offsets */
MZ_ZIP_LDH_SIG_OFS = 0,
MZ_ZIP_LDH_VERSION_NEEDED_OFS = 4,
MZ_ZIP_LDH_BIT_FLAG_OFS = 6,
MZ_ZIP_LDH_METHOD_OFS = 8,
MZ_ZIP_LDH_FILE_TIME_OFS = 10,
MZ_ZIP_LDH_FILE_DATE_OFS = 12,
MZ_ZIP_LDH_CRC32_OFS = 14,
MZ_ZIP_LDH_COMPRESSED_SIZE_OFS = 18,
MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS = 22,
MZ_ZIP_LDH_FILENAME_LEN_OFS = 26,
MZ_ZIP_LDH_EXTRA_LEN_OFS = 28,
MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR = 1 << 3,
/* End of central directory offsets */
MZ_ZIP_ECDH_SIG_OFS = 0,
MZ_ZIP_ECDH_NUM_THIS_DISK_OFS = 4,
MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS = 6,
MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 8,
MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS = 10,
MZ_ZIP_ECDH_CDIR_SIZE_OFS = 12,
MZ_ZIP_ECDH_CDIR_OFS_OFS = 16,
MZ_ZIP_ECDH_COMMENT_SIZE_OFS = 20,
/* ZIP64 End of central directory locator offsets */
MZ_ZIP64_ECDL_SIG_OFS = 0, /* 4 bytes */
MZ_ZIP64_ECDL_NUM_DISK_CDIR_OFS = 4, /* 4 bytes */
MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS = 8, /* 8 bytes */
MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS = 16, /* 4 bytes */
/* ZIP64 End of central directory header offsets */
MZ_ZIP64_ECDH_SIG_OFS = 0, /* 4 bytes */
MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS = 4, /* 8 bytes */
MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS = 12, /* 2 bytes */
MZ_ZIP64_ECDH_VERSION_NEEDED_OFS = 14, /* 2 bytes */
MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS = 16, /* 4 bytes */
MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS = 20, /* 4 bytes */
MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 24, /* 8 bytes */
MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS = 32, /* 8 bytes */
MZ_ZIP64_ECDH_CDIR_SIZE_OFS = 40, /* 8 bytes */
MZ_ZIP64_ECDH_CDIR_OFS_OFS = 48, /* 8 bytes */
MZ_ZIP_VERSION_MADE_BY_DOS_FILESYSTEM_ID = 0,
MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG = 0x10,
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED = 1,
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG = 32,
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION = 64,
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED = 8192,
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8 = 1 << 11
};
typedef struct
{
void* m_p;
size_t m_size, m_capacity;
mz_uint m_element_size;
} mz_zip_array;
struct mz_zip_internal_state_tag
{
mz_zip_array m_central_dir;
mz_zip_array m_central_dir_offsets;
mz_zip_array m_sorted_central_dir_offsets;
/* The flags passed in when the archive is initially opened. */
uint32_t m_init_flags;
/* MZ_TRUE if the archive has a zip64 end of central directory headers, etc. */
mz_bool m_zip64;
/* MZ_TRUE if we found zip64 extended info in the central directory (m_zip64 will also be slammed to true too, even if we didn't
* find a zip64 end of central dir header, etc.) */
mz_bool m_zip64_has_extended_info_fields;
/* These fields are used by the file, FILE, memory, and memory/heap read/write helpers. */
MZ_FILE* m_pFile;
mz_uint64 m_file_archive_start_ofs;
void* m_pMem;
size_t m_mem_size;
size_t m_mem_capacity;
};
# define MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(array_ptr, element_size) (array_ptr)->m_element_size = element_size
# if defined(DEBUG) || defined(_DEBUG) || defined(NDEBUG)
static MZ_FORCEINLINE mz_uint mz_zip_array_range_check(const mz_zip_array* pArray, mz_uint index)
{
MZ_ASSERT(index < pArray->m_size);
return index;
}
# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \
((element_type*)((array_ptr)->m_p))[mz_zip_array_range_check(array_ptr, index)]
# else
# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) ((element_type*)((array_ptr)->m_p))[index]
# endif
static MZ_FORCEINLINE void mz_zip_array_init(mz_zip_array* pArray, mz_uint32 element_size)
{
memset(pArray, 0, sizeof(mz_zip_array));
pArray->m_element_size = element_size;
}
static MZ_FORCEINLINE void mz_zip_array_clear(mz_zip_archive* pZip, mz_zip_array* pArray)
{
pZip->m_pFree(pZip->m_pAlloc_opaque, pArray->m_p);
memset(pArray, 0, sizeof(mz_zip_array));
}
static mz_bool mz_zip_array_ensure_capacity(mz_zip_archive* pZip, mz_zip_array* pArray, size_t min_new_capacity, mz_uint growing)
{
void* pNew_p;
size_t new_capacity = min_new_capacity;
MZ_ASSERT(pArray->m_element_size);
if (pArray->m_capacity >= min_new_capacity) {
return MZ_TRUE;
}
if (growing) {
new_capacity = MZ_MAX(1, pArray->m_capacity);
while (new_capacity < min_new_capacity) {
new_capacity *= 2;
}
}
if (NULL == (pNew_p = pZip->m_pRealloc(pZip->m_pAlloc_opaque, pArray->m_p, pArray->m_element_size, new_capacity))) {
return MZ_FALSE;
}
pArray->m_p = pNew_p;
pArray->m_capacity = new_capacity;
return MZ_TRUE;
}
static MZ_FORCEINLINE mz_bool mz_zip_array_reserve(mz_zip_archive* pZip, mz_zip_array* pArray, size_t new_capacity, mz_uint growing)
{
if (new_capacity > pArray->m_capacity) {
if (!mz_zip_array_ensure_capacity(pZip, pArray, new_capacity, growing)) {
return MZ_FALSE;
}
}
return MZ_TRUE;
}
static MZ_FORCEINLINE mz_bool mz_zip_array_resize(mz_zip_archive* pZip, mz_zip_array* pArray, size_t new_size, mz_uint growing)
{
if (new_size > pArray->m_capacity) {
if (!mz_zip_array_ensure_capacity(pZip, pArray, new_size, growing)) {
return MZ_FALSE;
}
}
pArray->m_size = new_size;
return MZ_TRUE;
}
static MZ_FORCEINLINE mz_bool mz_zip_array_ensure_room(mz_zip_archive* pZip, mz_zip_array* pArray, size_t n)
{
return mz_zip_array_reserve(pZip, pArray, pArray->m_size + n, MZ_TRUE);
}
static MZ_FORCEINLINE mz_bool mz_zip_array_push_back(mz_zip_archive* pZip, mz_zip_array* pArray, const void* pElements, size_t n)
{
size_t orig_size = pArray->m_size;
if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE)) {
return MZ_FALSE;
}
memcpy((mz_uint8*)pArray->m_p + orig_size * pArray->m_element_size, pElements, n * pArray->m_element_size);
return MZ_TRUE;
}
# ifndef MINIZ_NO_TIME
static MZ_TIME_T mz_zip_dos_to_time_t(int dos_time, int dos_date)
{
struct tm tm;
memset(&tm, 0, sizeof(tm));
tm.tm_isdst = -1;
tm.tm_year = ((dos_date >> 9) & 127) + 1980 - 1900;
tm.tm_mon = ((dos_date >> 5) & 15) - 1;
tm.tm_mday = dos_date & 31;
tm.tm_hour = (dos_time >> 11) & 31;
tm.tm_min = (dos_time >> 5) & 63;
tm.tm_sec = (dos_time << 1) & 62;
return mktime(&tm);
}
# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
static void mz_zip_time_t_to_dos_time(MZ_TIME_T time, mz_uint16* pDOS_time, mz_uint16* pDOS_date)
{
# ifdef _MSC_VER
struct tm tm_struct;
struct tm* tm = &tm_struct;
errno_t err = localtime_s(tm, &time);
if (err) {
*pDOS_date = 0;
*pDOS_time = 0;
return;
}
# else
struct tm* tm = localtime(&time);
# endif /* #ifdef _MSC_VER */
*pDOS_time = (mz_uint16)(((tm->tm_hour) << 11) + ((tm->tm_min) << 5) + ((tm->tm_sec) >> 1));
*pDOS_date = (mz_uint16)(((tm->tm_year + 1900 - 1980) << 9) + ((tm->tm_mon + 1) << 5) + tm->tm_mday);
}
# endif /* MINIZ_NO_ARCHIVE_WRITING_APIS */
# ifndef MINIZ_NO_STDIO
# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
static mz_bool mz_zip_get_file_modified_time(const char* pFilename, MZ_TIME_T* pTime)
{
struct MZ_FILE_STAT_STRUCT file_stat;
/* On Linux with x86 glibc, this call will fail on large files (I think >= 0x80000000 bytes) unless you compiled with
* _LARGEFILE64_SOURCE. Argh. */
if (MZ_FILE_STAT(pFilename, &file_stat) != 0) {
return MZ_FALSE;
}
*pTime = file_stat.st_mtime;
return MZ_TRUE;
}
# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS*/
static mz_bool mz_zip_set_file_times(const char* pFilename, MZ_TIME_T access_time, MZ_TIME_T modified_time)
{
struct utimbuf t;
memset(&t, 0, sizeof(t));
t.actime = access_time;
t.modtime = modified_time;
return !utime(pFilename, &t);
}
# endif /* #ifndef MINIZ_NO_STDIO */
# endif /* #ifndef MINIZ_NO_TIME */
static MZ_FORCEINLINE mz_bool mz_zip_set_error(mz_zip_archive* pZip, mz_zip_error err_num)
{
if (pZip) {
pZip->m_last_error = err_num;
}
return MZ_FALSE;
}
static mz_bool mz_zip_reader_init_internal(mz_zip_archive* pZip, mz_uint flags)
{
(void)flags;
if ((!pZip) || (pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!pZip->m_pAlloc) {
pZip->m_pAlloc = miniz_def_alloc_func;
}
if (!pZip->m_pFree) {
pZip->m_pFree = miniz_def_free_func;
}
if (!pZip->m_pRealloc) {
pZip->m_pRealloc = miniz_def_realloc_func;
}
pZip->m_archive_size = 0;
pZip->m_central_directory_file_ofs = 0;
pZip->m_total_files = 0;
pZip->m_last_error = MZ_ZIP_NO_ERROR;
if (NULL == (pZip->m_pState = (mz_zip_internal_state*)pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state))))
{
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, sizeof(mz_uint8));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_sorted_central_dir_offsets, sizeof(mz_uint32));
pZip->m_pState->m_init_flags = flags;
pZip->m_pState->m_zip64 = MZ_FALSE;
pZip->m_pState->m_zip64_has_extended_info_fields = MZ_FALSE;
pZip->m_zip_mode = MZ_ZIP_MODE_READING;
return MZ_TRUE;
}
static MZ_FORCEINLINE mz_bool mz_zip_reader_filename_less(const mz_zip_array* pCentral_dir_array,
const mz_zip_array* pCentral_dir_offsets,
mz_uint l_index,
mz_uint r_index)
{
const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_array,
mz_uint8,
MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, l_index)),
*pE;
const mz_uint8* pR =
&MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_array, mz_uint8, MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, r_index));
mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS), r_len = MZ_READ_LE16(pR + MZ_ZIP_CDH_FILENAME_LEN_OFS);
mz_uint8 l = 0, r = 0;
pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE;
pR += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE;
pE = pL + MZ_MIN(l_len, r_len);
while (pL < pE) {
if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) {
break;
}
pL++;
pR++;
}
return (pL == pE) ? (l_len < r_len) : (l < r);
}
# define MZ_SWAP_UINT32(a, b) \
do { \
mz_uint32 t = a; \
a = b; \
b = t; \
} \
MZ_MACRO_END
/* Heap sort of lowercased filenames, used to help accelerate plain central directory searches by mz_zip_reader_locate_file().
* (Could also use qsort(), but it could allocate memory.) */
static void mz_zip_reader_sort_central_dir_offsets_by_filename(mz_zip_archive* pZip)
{
mz_zip_internal_state* pState = pZip->m_pState;
const mz_zip_array* pCentral_dir_offsets = &pState->m_central_dir_offsets;
const mz_zip_array* pCentral_dir = &pState->m_central_dir;
mz_uint32* pIndices;
mz_uint32 start, end;
const mz_uint32 size = pZip->m_total_files;
if (size <= 1U) {
return;
}
pIndices = &MZ_ZIP_ARRAY_ELEMENT(&pState->m_sorted_central_dir_offsets, mz_uint32, 0);
start = (size - 2U) >> 1U;
for (;;) {
mz_uint64 child, root = start;
for (;;) {
if ((child = (root << 1U) + 1U) >= size) {
break;
}
child += (((child + 1U) < size) &&
(mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, pIndices[child], pIndices[child + 1U])));
if (!mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, pIndices[root], pIndices[child])) {
break;
}
MZ_SWAP_UINT32(pIndices[root], pIndices[child]);
root = child;
}
if (!start) {
break;
}
start--;
}
end = size - 1;
while (end > 0) {
mz_uint64 child, root = 0;
MZ_SWAP_UINT32(pIndices[end], pIndices[0]);
for (;;) {
if ((child = (root << 1U) + 1U) >= end) {
break;
}
child += (((child + 1U) < end) &&
mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, pIndices[child], pIndices[child + 1U]));
if (!mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, pIndices[root], pIndices[child])) {
break;
}
MZ_SWAP_UINT32(pIndices[root], pIndices[child]);
root = child;
}
end--;
}
}
static mz_bool mz_zip_reader_locate_header_sig(mz_zip_archive* pZip, mz_uint32 record_sig, mz_uint32 record_size, mz_int64* pOfs)
{
mz_int64 cur_file_ofs;
mz_uint32 buf_u32[4096 / sizeof(mz_uint32)];
mz_uint8* pBuf = (mz_uint8*)buf_u32;
/* Basic sanity checks - reject files which are too small */
if (pZip->m_archive_size < record_size) {
return MZ_FALSE;
}
/* Find the record by scanning the file from the end towards the beginning. */
cur_file_ofs = MZ_MAX((mz_int64)pZip->m_archive_size - (mz_int64)sizeof(buf_u32), 0);
for (;;) {
int i, n = (int)MZ_MIN(sizeof(buf_u32), pZip->m_archive_size - cur_file_ofs);
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, n) != (mz_uint)n) {
return MZ_FALSE;
}
for (i = n - 4; i >= 0; --i) {
mz_uint s = MZ_READ_LE32(pBuf + i);
if (s == record_sig) {
if ((pZip->m_archive_size - (cur_file_ofs + i)) >= record_size) {
break;
}
}
}
if (i >= 0) {
cur_file_ofs += i;
break;
}
/* Give up if we've searched the entire file, or we've gone back "too far" (~64kb) */
if ((!cur_file_ofs) || ((pZip->m_archive_size - cur_file_ofs) >= (MZ_UINT16_MAX + record_size))) {
return MZ_FALSE;
}
cur_file_ofs = MZ_MAX(cur_file_ofs - (sizeof(buf_u32) - 3), 0);
}
*pOfs = cur_file_ofs;
return MZ_TRUE;
}
static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive* pZip, mz_uint flags)
{
mz_uint cdir_size = 0, cdir_entries_on_this_disk = 0, num_this_disk = 0, cdir_disk_index = 0;
mz_uint64 cdir_ofs = 0;
mz_int64 cur_file_ofs = 0;
const mz_uint8* p;
mz_uint32 buf_u32[4096 / sizeof(mz_uint32)];
mz_uint8* pBuf = (mz_uint8*)buf_u32;
mz_bool sort_central_dir = ((flags & MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0);
mz_uint32 zip64_end_of_central_dir_locator_u32[(MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + sizeof(mz_uint32) - 1) /
sizeof(mz_uint32)];
mz_uint8* pZip64_locator = (mz_uint8*)zip64_end_of_central_dir_locator_u32;
mz_uint32
zip64_end_of_central_dir_header_u32[(MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pZip64_end_of_central_dir = (mz_uint8*)zip64_end_of_central_dir_header_u32;
mz_uint64 zip64_end_of_central_dir_ofs = 0;
/* Basic sanity checks - reject files which are too small, and check the first 4 bytes of the file to make sure a local header
* is there. */
if (pZip->m_archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
if (!mz_zip_reader_locate_header_sig(pZip,
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG,
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE,
&cur_file_ofs)) {
return mz_zip_set_error(pZip, MZ_ZIP_FAILED_FINDING_CENTRAL_DIR);
}
/* Read and verify the end of central directory record. */
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) !=
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
if (MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_SIG_OFS) != MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
if (cur_file_ofs >= (MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) {
if (pZip->m_pRead(pZip->m_pIO_opaque,
cur_file_ofs - MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE,
pZip64_locator,
MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) == MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE)
{
if (MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_SIG_OFS) == MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG) {
zip64_end_of_central_dir_ofs = MZ_READ_LE64(pZip64_locator + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS);
if (zip64_end_of_central_dir_ofs > (pZip->m_archive_size - MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) {
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
if (pZip->m_pRead(pZip->m_pIO_opaque,
zip64_end_of_central_dir_ofs,
pZip64_end_of_central_dir,
MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) == MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)
{
if (MZ_READ_LE32(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIG_OFS) == MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG) {
pZip->m_pState->m_zip64 = MZ_TRUE;
}
}
}
}
}
pZip->m_total_files = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS);
cdir_entries_on_this_disk = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS);
num_this_disk = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS);
cdir_disk_index = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS);
cdir_size = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_SIZE_OFS);
cdir_ofs = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_OFS_OFS);
if (pZip->m_pState->m_zip64) {
mz_uint32 zip64_total_num_of_disks = MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS);
mz_uint64 zip64_cdir_total_entries = MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS);
mz_uint64 zip64_cdir_total_entries_on_this_disk =
MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS);
mz_uint64 zip64_size_of_end_of_central_dir_record =
MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS);
mz_uint64 zip64_size_of_central_directory = MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_SIZE_OFS);
if (zip64_size_of_end_of_central_dir_record < (MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - 12)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (zip64_total_num_of_disks != 1U) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);
}
/* Check for miniz's practical limits */
if (zip64_cdir_total_entries > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
pZip->m_total_files = (mz_uint32)zip64_cdir_total_entries;
if (zip64_cdir_total_entries_on_this_disk > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
cdir_entries_on_this_disk = (mz_uint32)zip64_cdir_total_entries_on_this_disk;
/* Check for miniz's current practical limits (sorry, this should be enough for millions of files) */
if (zip64_size_of_central_directory > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
cdir_size = (mz_uint32)zip64_size_of_central_directory;
num_this_disk = MZ_READ_LE32(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS);
cdir_disk_index = MZ_READ_LE32(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS);
cdir_ofs = MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_OFS_OFS);
}
if (pZip->m_total_files != cdir_entries_on_this_disk) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);
}
if (((num_this_disk | cdir_disk_index) != 0) && ((num_this_disk != 1) || (cdir_disk_index != 1))) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);
}
if (cdir_size < pZip->m_total_files * MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if ((cdir_ofs + (mz_uint64)cdir_size) > pZip->m_archive_size) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
pZip->m_central_directory_file_ofs = cdir_ofs;
if (pZip->m_total_files) {
mz_uint i, n;
/* Read the entire central directory into a heap block, and allocate another heap block to hold the unsorted central dir
* file record offsets, and possibly another to hold the sorted indices. */
if ((!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir, cdir_size, MZ_FALSE)) ||
(!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir_offsets, pZip->m_total_files, MZ_FALSE)))
{
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (sort_central_dir) {
if (!mz_zip_array_resize(pZip, &pZip->m_pState->m_sorted_central_dir_offsets, pZip->m_total_files, MZ_FALSE)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
}
if (pZip->m_pRead(pZip->m_pIO_opaque, cdir_ofs, pZip->m_pState->m_central_dir.m_p, cdir_size) != cdir_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
/* Now create an index into the central directory file records, do some basic sanity checking on each record */
p = (const mz_uint8*)pZip->m_pState->m_central_dir.m_p;
for (n = cdir_size, i = 0; i < pZip->m_total_files; ++i) {
mz_uint total_header_size, disk_index, bit_flags, filename_size, ext_data_size;
mz_uint64 comp_size, decomp_size, local_header_ofs;
if ((n < MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) || (MZ_READ_LE32(p) != MZ_ZIP_CENTRAL_DIR_HEADER_SIG)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, i) =
(mz_uint32)(p - (const mz_uint8*)pZip->m_pState->m_central_dir.m_p);
if (sort_central_dir) MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_sorted_central_dir_offsets, mz_uint32, i) = i;
comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS);
decomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS);
local_header_ofs = MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS);
filename_size = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS);
ext_data_size = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS);
if ((!pZip->m_pState->m_zip64_has_extended_info_fields) && (ext_data_size) &&
(MZ_MAX(MZ_MAX(comp_size, decomp_size), local_header_ofs) == MZ_UINT32_MAX))
{
/* Attempt to find zip64 extended information field in the entry's extra data */
mz_uint32 extra_size_remaining = ext_data_size;
if (extra_size_remaining) {
const mz_uint8* pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size;
do {
mz_uint32 field_id;
mz_uint32 field_data_size;
if (extra_size_remaining < (sizeof(mz_uint16) * 2)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
field_id = MZ_READ_LE16(pExtra_data);
field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16));
if ((field_data_size + sizeof(mz_uint16) * 2) > extra_size_remaining) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) {
/* Ok, the archive didn't have any zip64 headers but it uses a zip64 extended information field so mark
* it as zip64 anyway (this can occur with infozip's zip util when it reads compresses files from
* stdin). */
pZip->m_pState->m_zip64 = MZ_TRUE;
pZip->m_pState->m_zip64_has_extended_info_fields = MZ_TRUE;
break;
}
pExtra_data += sizeof(mz_uint16) * 2 + field_data_size;
extra_size_remaining = extra_size_remaining - sizeof(mz_uint16) * 2 - field_data_size;
}
while (extra_size_remaining);
}
}
/* I've seen archives that aren't marked as zip64 that uses zip64 ext data, argh */
if ((comp_size != MZ_UINT32_MAX) && (decomp_size != MZ_UINT32_MAX)) {
if (((!MZ_READ_LE32(p + MZ_ZIP_CDH_METHOD_OFS)) && (decomp_size != comp_size)) || (decomp_size && !comp_size)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
}
disk_index = MZ_READ_LE16(p + MZ_ZIP_CDH_DISK_START_OFS);
if ((disk_index == MZ_UINT16_MAX) || ((disk_index != num_this_disk) && (disk_index != 1))) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);
}
if (comp_size != MZ_UINT32_MAX) {
if (((mz_uint64)MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS) + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + comp_size) >
pZip->m_archive_size) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
}
bit_flags = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS);
if (bit_flags & MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
}
if ((total_header_size = MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) +
MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS) + MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS)) > n)
{
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
n -= total_header_size;
p += total_header_size;
}
}
if (sort_central_dir) {
mz_zip_reader_sort_central_dir_offsets_by_filename(pZip);
}
return MZ_TRUE;
}
inline void mz_zip_zero_struct(mz_zip_archive* pZip)
{
if (pZip) MZ_CLEAR_OBJ(*pZip);
}
static mz_bool mz_zip_reader_end_internal(mz_zip_archive* pZip, mz_bool set_last_error)
{
mz_bool status = MZ_TRUE;
if (!pZip) {
return MZ_FALSE;
}
if ((!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) {
if (set_last_error) {
pZip->m_last_error = MZ_ZIP_INVALID_PARAMETER;
}
return MZ_FALSE;
}
if (pZip->m_pState) {
mz_zip_internal_state* pState = pZip->m_pState;
pZip->m_pState = NULL;
mz_zip_array_clear(pZip, &pState->m_central_dir);
mz_zip_array_clear(pZip, &pState->m_central_dir_offsets);
mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets);
# ifndef MINIZ_NO_STDIO
if (pState->m_pFile) {
if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) {
if (MZ_FCLOSE(pState->m_pFile) == EOF) {
if (set_last_error) {
pZip->m_last_error = MZ_ZIP_FILE_CLOSE_FAILED;
}
status = MZ_FALSE;
}
}
pState->m_pFile = NULL;
}
# endif /* #ifndef MINIZ_NO_STDIO */
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
}
pZip->m_zip_mode = MZ_ZIP_MODE_INVALID;
return status;
}
inline mz_bool mz_zip_reader_end(mz_zip_archive* pZip)
{
return mz_zip_reader_end_internal(pZip, MZ_TRUE);
}
inline mz_bool mz_zip_reader_init(mz_zip_archive* pZip, mz_uint64 size, mz_uint flags)
{
if ((!pZip) || (!pZip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_reader_init_internal(pZip, flags)) {
return MZ_FALSE;
}
pZip->m_zip_type = MZ_ZIP_TYPE_USER;
pZip->m_archive_size = size;
if (!mz_zip_reader_read_central_dir(pZip, flags)) {
mz_zip_reader_end_internal(pZip, MZ_FALSE);
return MZ_FALSE;
}
return MZ_TRUE;
}
static size_t mz_zip_mem_read_func(void* pOpaque, mz_uint64 file_ofs, void* pBuf, size_t n)
{
mz_zip_archive* pZip = (mz_zip_archive*)pOpaque;
size_t s = (file_ofs >= pZip->m_archive_size) ? 0 : (size_t)MZ_MIN(pZip->m_archive_size - file_ofs, n);
memcpy(pBuf, (const mz_uint8*)pZip->m_pState->m_pMem + file_ofs, s);
return s;
}
inline mz_bool mz_zip_reader_init_mem(mz_zip_archive* pZip, const void* pMem, size_t size, mz_uint flags)
{
if (!pMem) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
if (!mz_zip_reader_init_internal(pZip, flags)) {
return MZ_FALSE;
}
pZip->m_zip_type = MZ_ZIP_TYPE_MEMORY;
pZip->m_archive_size = size;
pZip->m_pRead = mz_zip_mem_read_func;
pZip->m_pIO_opaque = pZip;
pZip->m_pNeeds_keepalive = NULL;
# ifdef __cplusplus
pZip->m_pState->m_pMem = const_cast<void*>(pMem);
# else
pZip->m_pState->m_pMem = (void*)pMem;
# endif
pZip->m_pState->m_mem_size = size;
if (!mz_zip_reader_read_central_dir(pZip, flags)) {
mz_zip_reader_end_internal(pZip, MZ_FALSE);
return MZ_FALSE;
}
return MZ_TRUE;
}
# ifndef MINIZ_NO_STDIO
static size_t mz_zip_file_read_func(void* pOpaque, mz_uint64 file_ofs, void* pBuf, size_t n)
{
mz_zip_archive* pZip = (mz_zip_archive*)pOpaque;
mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile);
file_ofs += pZip->m_pState->m_file_archive_start_ofs;
if (((mz_int64)file_ofs < 0) ||
(((cur_ofs != (mz_int64)file_ofs)) && (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64)file_ofs, SEEK_SET)))) {
return 0;
}
return MZ_FREAD(pBuf, 1, n, pZip->m_pState->m_pFile);
}
inline mz_bool mz_zip_reader_init_file(mz_zip_archive* pZip, const char* pFilename, mz_uint32 flags)
{
return mz_zip_reader_init_file_v2(pZip, pFilename, flags, 0, 0);
}
inline mz_bool mz_zip_reader_init_file_v2(mz_zip_archive* pZip,
const char* pFilename,
mz_uint flags,
mz_uint64 file_start_ofs,
mz_uint64 archive_size)
{
mz_uint64 file_size;
MZ_FILE* pFile;
if ((!pZip) || (!pFilename) || ((archive_size) && (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE))) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pFile = MZ_FOPEN(pFilename, "rb");
if (!pFile) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
file_size = archive_size;
if (!file_size) {
if (MZ_FSEEK64(pFile, 0, SEEK_END)) {
MZ_FCLOSE(pFile);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED);
}
file_size = MZ_FTELL64(pFile);
}
/* TODO: Better sanity check archive_size and the # of actual remaining bytes */
if (file_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) {
MZ_FCLOSE(pFile);
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
if (!mz_zip_reader_init_internal(pZip, flags)) {
MZ_FCLOSE(pFile);
return MZ_FALSE;
}
pZip->m_zip_type = MZ_ZIP_TYPE_FILE;
pZip->m_pRead = mz_zip_file_read_func;
pZip->m_pIO_opaque = pZip;
pZip->m_pState->m_pFile = pFile;
pZip->m_archive_size = file_size;
pZip->m_pState->m_file_archive_start_ofs = file_start_ofs;
if (!mz_zip_reader_read_central_dir(pZip, flags)) {
mz_zip_reader_end_internal(pZip, MZ_FALSE);
return MZ_FALSE;
}
return MZ_TRUE;
}
inline mz_bool mz_zip_reader_init_cfile(mz_zip_archive* pZip, MZ_FILE* pFile, mz_uint64 archive_size, mz_uint flags)
{
mz_uint64 cur_file_ofs;
if ((!pZip) || (!pFile)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
cur_file_ofs = MZ_FTELL64(pFile);
if (!archive_size) {
if (MZ_FSEEK64(pFile, 0, SEEK_END)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED);
}
archive_size = MZ_FTELL64(pFile) - cur_file_ofs;
if (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE);
}
}
if (!mz_zip_reader_init_internal(pZip, flags)) {
return MZ_FALSE;
}
pZip->m_zip_type = MZ_ZIP_TYPE_CFILE;
pZip->m_pRead = mz_zip_file_read_func;
pZip->m_pIO_opaque = pZip;
pZip->m_pState->m_pFile = pFile;
pZip->m_archive_size = archive_size;
pZip->m_pState->m_file_archive_start_ofs = cur_file_ofs;
if (!mz_zip_reader_read_central_dir(pZip, flags)) {
mz_zip_reader_end_internal(pZip, MZ_FALSE);
return MZ_FALSE;
}
return MZ_TRUE;
}
# endif /* #ifndef MINIZ_NO_STDIO */
static MZ_FORCEINLINE const mz_uint8* mz_zip_get_cdh(mz_zip_archive* pZip, mz_uint file_index)
{
if ((!pZip) || (!pZip->m_pState) || (file_index >= pZip->m_total_files)) {
return NULL;
}
return &MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir,
mz_uint8,
MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index));
}
inline mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive* pZip, mz_uint file_index)
{
mz_uint m_bit_flag;
const mz_uint8* p = mz_zip_get_cdh(pZip, file_index);
if (!p) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
return MZ_FALSE;
}
m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS);
return (m_bit_flag & (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) !=
0;
}
inline mz_bool mz_zip_reader_is_file_supported(mz_zip_archive* pZip, mz_uint file_index)
{
mz_uint bit_flag;
mz_uint method;
const mz_uint8* p = mz_zip_get_cdh(pZip, file_index);
if (!p) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
return MZ_FALSE;
}
method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS);
bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS);
if ((method != 0) && (method != MZ_DEFLATED)) {
mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD);
return MZ_FALSE;
}
if (bit_flag & (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) {
mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
return MZ_FALSE;
}
if (bit_flag & MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG) {
mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE);
return MZ_FALSE;
}
return MZ_TRUE;
}
inline mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive* pZip, mz_uint file_index)
{
mz_uint filename_len, attribute_mapping_id, external_attr;
const mz_uint8* p = mz_zip_get_cdh(pZip, file_index);
if (!p) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
return MZ_FALSE;
}
filename_len = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS);
if (filename_len) {
if (*(p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_len - 1) == '/') {
return MZ_TRUE;
}
}
/* Bugfix: This code was also checking if the internal attribute was non-zero, which wasn't correct. */
/* Most/all zip writers (hopefully) set DOS file/directory attributes in the low 16-bits, so check for the DOS directory flag
* and ignore the @library OS ID in the created by field. */
/* FIXME: Remove this check? Is it necessary - we already check the filename. */
attribute_mapping_id = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS) >> 8;
(void)attribute_mapping_id;
external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS);
if ((external_attr & MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG) != 0) {
return MZ_TRUE;
}
return MZ_FALSE;
}
static mz_bool mz_zip_file_stat_internal(mz_zip_archive* pZip,
mz_uint file_index,
const mz_uint8* pCentral_dir_header,
mz_zip_archive_file_stat* pStat,
mz_bool* pFound_zip64_extra_data)
{
mz_uint n;
const mz_uint8* p = pCentral_dir_header;
if (pFound_zip64_extra_data) {
*pFound_zip64_extra_data = MZ_FALSE;
}
if ((!p) || (!pStat)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
/* Extract fields from the central directory record. */
pStat->m_file_index = file_index;
pStat->m_central_dir_ofs = MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index);
pStat->m_version_made_by = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS);
pStat->m_version_needed = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_NEEDED_OFS);
pStat->m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS);
pStat->m_method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS);
# ifndef MINIZ_NO_TIME
pStat->m_time = mz_zip_dos_to_time_t(MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_TIME_OFS), MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_DATE_OFS));
# endif
pStat->m_crc32 = MZ_READ_LE32(p + MZ_ZIP_CDH_CRC32_OFS);
pStat->m_comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS);
pStat->m_uncomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS);
pStat->m_internal_attr = MZ_READ_LE16(p + MZ_ZIP_CDH_INTERNAL_ATTR_OFS);
pStat->m_external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS);
pStat->m_local_header_ofs = MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS);
/* Copy as much of the filename and comment as possible. */
n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS);
n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE - 1);
memcpy(pStat->m_filename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n);
pStat->m_filename[n] = '\0';
n = MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS);
n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE - 1);
pStat->m_comment_size = n;
memcpy(pStat->m_comment,
p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) +
MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS),
n);
pStat->m_comment[n] = '\0';
/* Set some flags for convienance */
pStat->m_is_directory = mz_zip_reader_is_file_a_directory(pZip, file_index);
pStat->m_is_encrypted = mz_zip_reader_is_file_encrypted(pZip, file_index);
pStat->m_is_supported = mz_zip_reader_is_file_supported(pZip, file_index);
/* See if we need to read any zip64 extended information fields. */
/* Confusingly, these zip64 fields can be present even on non-zip64 archives (Debian zip on a huge files from stdin piped to
* stdout creates them). */
if (MZ_MAX(MZ_MAX(pStat->m_comp_size, pStat->m_uncomp_size), pStat->m_local_header_ofs) == MZ_UINT32_MAX) {
/* Attempt to find zip64 extended information field in the entry's extra data */
mz_uint32 extra_size_remaining = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS);
if (extra_size_remaining) {
const mz_uint8* pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS);
do {
mz_uint32 field_id;
mz_uint32 field_data_size;
if (extra_size_remaining < (sizeof(mz_uint16) * 2)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
field_id = MZ_READ_LE16(pExtra_data);
field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16));
if ((field_data_size + sizeof(mz_uint16) * 2) > extra_size_remaining) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) {
const mz_uint8* pField_data = pExtra_data + sizeof(mz_uint16) * 2;
mz_uint32 field_data_remaining = field_data_size;
if (pFound_zip64_extra_data) {
*pFound_zip64_extra_data = MZ_TRUE;
}
if (pStat->m_uncomp_size == MZ_UINT32_MAX) {
if (field_data_remaining < sizeof(mz_uint64)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
pStat->m_uncomp_size = MZ_READ_LE64(pField_data);
pField_data += sizeof(mz_uint64);
field_data_remaining -= sizeof(mz_uint64);
}
if (pStat->m_comp_size == MZ_UINT32_MAX) {
if (field_data_remaining < sizeof(mz_uint64)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
pStat->m_comp_size = MZ_READ_LE64(pField_data);
pField_data += sizeof(mz_uint64);
field_data_remaining -= sizeof(mz_uint64);
}
if (pStat->m_local_header_ofs == MZ_UINT32_MAX) {
if (field_data_remaining < sizeof(mz_uint64)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
pStat->m_local_header_ofs = MZ_READ_LE64(pField_data);
pField_data += sizeof(mz_uint64);
field_data_remaining -= sizeof(mz_uint64);
}
break;
}
pExtra_data += sizeof(mz_uint16) * 2 + field_data_size;
extra_size_remaining = extra_size_remaining - sizeof(mz_uint16) * 2 - field_data_size;
}
while (extra_size_remaining);
}
}
return MZ_TRUE;
}
static MZ_FORCEINLINE mz_bool mz_zip_string_equal(const char* pA, const char* pB, mz_uint len, mz_uint flags)
{
mz_uint i;
if (flags & MZ_ZIP_FLAG_CASE_SENSITIVE) {
return 0 == memcmp(pA, pB, len);
}
for (i = 0; i < len; ++i) {
if (MZ_TOLOWER(pA[i]) != MZ_TOLOWER(pB[i])) {
return MZ_FALSE;
}
}
return MZ_TRUE;
}
static MZ_FORCEINLINE int mz_zip_filename_compare(const mz_zip_array* pCentral_dir_array,
const mz_zip_array* pCentral_dir_offsets,
mz_uint l_index,
const char* pR,
mz_uint r_len)
{
const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_array,
mz_uint8,
MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, l_index)),
*pE;
mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS);
mz_uint8 l = 0, r = 0;
pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE;
pE = pL + MZ_MIN(l_len, r_len);
while (pL < pE) {
if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) {
break;
}
pL++;
pR++;
}
return (pL == pE) ? (int)(l_len - r_len) : (l - r);
}
static mz_bool mz_zip_locate_file_binary_search(mz_zip_archive* pZip, const char* pFilename, mz_uint32* pIndex)
{
mz_zip_internal_state* pState = pZip->m_pState;
const mz_zip_array* pCentral_dir_offsets = &pState->m_central_dir_offsets;
const mz_zip_array* pCentral_dir = &pState->m_central_dir;
mz_uint32* pIndices = &MZ_ZIP_ARRAY_ELEMENT(&pState->m_sorted_central_dir_offsets, mz_uint32, 0);
const uint32_t size = pZip->m_total_files;
const mz_uint filename_len = (mz_uint)strlen(pFilename);
if (pIndex) {
*pIndex = 0;
}
if (size) {
/* yes I could use uint32_t's, but then we would have to add some special case checks in the loop, argh, and */
/* honestly the major expense here on 32-bit CPU's will still be the filename compare */
mz_int64 l = 0, h = (mz_int64)size - 1;
while (l <= h) {
mz_int64 m = l + ((h - l) >> 1);
uint32_t file_index = pIndices[(uint32_t)m];
int comp = mz_zip_filename_compare(pCentral_dir, pCentral_dir_offsets, file_index, pFilename, filename_len);
if (!comp) {
if (pIndex) {
*pIndex = file_index;
}
return MZ_TRUE;
}
else if (comp < 0) {
l = m + 1;
}
else {
h = m - 1;
}
}
}
return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND);
}
inline int mz_zip_reader_locate_file(mz_zip_archive* pZip, const char* pName, const char* pComment, mz_uint flags)
{
mz_uint32 index;
if (!mz_zip_reader_locate_file_v2(pZip, pName, pComment, flags, &index)) {
return -1;
}
else {
return (int)index;
}
}
inline mz_bool
mz_zip_reader_locate_file_v2(mz_zip_archive* pZip, const char* pName, const char* pComment, mz_uint flags, mz_uint32* pIndex)
{
mz_uint file_index;
size_t name_len, comment_len;
if (pIndex) {
*pIndex = 0;
}
if ((!pZip) || (!pZip->m_pState) || (!pName)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
/* See if we can use a binary search */
if (((pZip->m_pState->m_init_flags & MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0) &&
(pZip->m_zip_mode == MZ_ZIP_MODE_READING) && ((flags & (MZ_ZIP_FLAG_IGNORE_PATH | MZ_ZIP_FLAG_CASE_SENSITIVE)) == 0) &&
(!pComment) && (pZip->m_pState->m_sorted_central_dir_offsets.m_size))
{
return mz_zip_locate_file_binary_search(pZip, pName, pIndex);
}
/* Locate the entry by scanning the entire central directory */
name_len = strlen(pName);
if (name_len > MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
comment_len = pComment ? strlen(pComment) : 0;
if (comment_len > MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
for (file_index = 0; file_index < pZip->m_total_files; file_index++) {
const mz_uint8* pHeader =
&MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir,
mz_uint8,
MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index));
mz_uint filename_len = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_FILENAME_LEN_OFS);
const char* pFilename = (const char*)pHeader + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE;
if (filename_len < name_len) {
continue;
}
if (comment_len) {
mz_uint file_extra_len = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_EXTRA_LEN_OFS),
file_comment_len = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_COMMENT_LEN_OFS);
const char* pFile_comment = pFilename + filename_len + file_extra_len;
if ((file_comment_len != comment_len) || (!mz_zip_string_equal(pComment, pFile_comment, file_comment_len, flags))) {
continue;
}
}
if ((flags & MZ_ZIP_FLAG_IGNORE_PATH) && (filename_len)) {
int ofs = filename_len - 1;
do {
if ((pFilename[ofs] == '/') || (pFilename[ofs] == '\\') || (pFilename[ofs] == ':')) {
break;
}
}
while (--ofs >= 0);
ofs++;
pFilename += ofs;
filename_len -= ofs;
}
if ((filename_len == name_len) && (mz_zip_string_equal(pName, pFilename, filename_len, flags))) {
if (pIndex) {
*pIndex = file_index;
}
return MZ_TRUE;
}
}
return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND);
}
inline mz_bool mz_zip_reader_extract_to_mem_no_alloc(mz_zip_archive* pZip,
mz_uint file_index,
void* pBuf,
size_t buf_size,
mz_uint flags,
void* pUser_read_buf,
size_t user_read_buf_size)
{
int status = TINFL_STATUS_DONE;
mz_uint64 needed_size, cur_file_ofs, comp_remaining, out_buf_ofs = 0, read_buf_size, read_buf_ofs = 0, read_buf_avail;
mz_zip_archive_file_stat file_stat;
void* pRead_buf;
mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pLocal_header = (mz_uint8*)local_header_u32;
tinfl_decompressor inflator;
if ((!pZip) || (!pZip->m_pState) || ((buf_size) && (!pBuf)) || ((user_read_buf_size) && (!pUser_read_buf)) || (!pZip->m_pRead))
{
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) {
return MZ_FALSE;
}
/* A directory or zero length file */
if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) {
return MZ_TRUE;
}
/* Encryption and patch files are not supported. */
if (file_stat.m_bit_flag &
(MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION |
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG))
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
}
/* This function only supports decompressing stored and deflate. */
if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (file_stat.m_method != 0) && (file_stat.m_method != MZ_DEFLATED)) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD);
}
/* Ensure supplied output buffer is large enough. */
needed_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) ? file_stat.m_comp_size : file_stat.m_uncomp_size;
if (buf_size < needed_size) {
return mz_zip_set_error(pZip, MZ_ZIP_BUF_TOO_SMALL);
}
/* Read and parse the local directory entry. */
cur_file_ofs = file_stat.m_local_header_ofs;
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
cur_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) +
MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS);
if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!file_stat.m_method)) {
/* The file is stored or the caller has requested the compressed data. */
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, (size_t)needed_size) != needed_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) == 0) {
if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8*)pBuf, (size_t)file_stat.m_uncomp_size) != file_stat.m_crc32) {
return mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED);
}
}
# endif
return MZ_TRUE;
}
/* Decompress the file either directly from memory or from a file input buffer. */
tinfl_init(&inflator);
if (pZip->m_pState->m_pMem) {
/* Read directly from the archive in memory. */
pRead_buf = (mz_uint8*)pZip->m_pState->m_pMem + cur_file_ofs;
read_buf_size = read_buf_avail = file_stat.m_comp_size;
comp_remaining = 0;
}
else if (pUser_read_buf) {
/* Use a user provided read buffer. */
if (!user_read_buf_size) {
return MZ_FALSE;
}
pRead_buf = (mz_uint8*)pUser_read_buf;
read_buf_size = user_read_buf_size;
read_buf_avail = 0;
comp_remaining = file_stat.m_comp_size;
}
else {
/* Temporarily allocate a read buffer. */
read_buf_size = MZ_MIN(file_stat.m_comp_size, (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE);
if (((sizeof(size_t) == sizeof(mz_uint32))) && (read_buf_size > 0x7FFFFFFF)) {
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, (size_t)read_buf_size))) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
read_buf_avail = 0;
comp_remaining = file_stat.m_comp_size;
}
do {
/* The size_t cast here should be OK because we've verified that the output buffer is >= file_stat.m_uncomp_size above */
size_t in_buf_size, out_buf_size = (size_t)(file_stat.m_uncomp_size - out_buf_ofs);
if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) {
read_buf_avail = MZ_MIN(read_buf_size, comp_remaining);
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, (size_t)read_buf_avail) != read_buf_avail) {
status = TINFL_STATUS_FAILED;
mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED);
break;
}
cur_file_ofs += read_buf_avail;
comp_remaining -= read_buf_avail;
read_buf_ofs = 0;
}
in_buf_size = (size_t)read_buf_avail;
status = tinfl_decompress(&inflator,
(mz_uint8*)pRead_buf + read_buf_ofs,
&in_buf_size,
(mz_uint8*)pBuf,
(mz_uint8*)pBuf + out_buf_ofs,
&out_buf_size,
TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | (comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0));
read_buf_avail -= in_buf_size;
read_buf_ofs += in_buf_size;
out_buf_ofs += out_buf_size;
}
while (status == TINFL_STATUS_NEEDS_MORE_INPUT);
if (status == TINFL_STATUS_DONE) {
/* Make sure the entire file was decompressed, and check its CRC. */
if (out_buf_ofs != file_stat.m_uncomp_size) {
mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE);
status = TINFL_STATUS_FAILED;
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
else if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8*)pBuf, (size_t)file_stat.m_uncomp_size) != file_stat.m_crc32) {
mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED);
status = TINFL_STATUS_FAILED;
}
# endif
}
if ((!pZip->m_pState->m_pMem) && (!pUser_read_buf)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
}
return status == TINFL_STATUS_DONE;
}
inline mz_bool mz_zip_reader_extract_file_to_mem_no_alloc(mz_zip_archive* pZip,
const char* pFilename,
void* pBuf,
size_t buf_size,
mz_uint flags,
void* pUser_read_buf,
size_t user_read_buf_size)
{
mz_uint32 file_index;
if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) {
return MZ_FALSE;
}
return mz_zip_reader_extract_to_mem_no_alloc(pZip, file_index, pBuf, buf_size, flags, pUser_read_buf, user_read_buf_size);
}
inline mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive* pZip, mz_uint file_index, void* pBuf, size_t buf_size, mz_uint flags)
{
return mz_zip_reader_extract_to_mem_no_alloc(pZip, file_index, pBuf, buf_size, flags, NULL, 0);
}
inline mz_bool
mz_zip_reader_extract_file_to_mem(mz_zip_archive* pZip, const char* pFilename, void* pBuf, size_t buf_size, mz_uint flags)
{
return mz_zip_reader_extract_file_to_mem_no_alloc(pZip, pFilename, pBuf, buf_size, flags, NULL, 0);
}
inline void* mz_zip_reader_extract_to_heap(mz_zip_archive* pZip, mz_uint file_index, size_t* pSize, mz_uint flags)
{
mz_uint64 comp_size, uncomp_size, alloc_size;
const mz_uint8* p = mz_zip_get_cdh(pZip, file_index);
void* pBuf;
if (pSize) {
*pSize = 0;
}
if (!p) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
return NULL;
}
comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS);
uncomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS);
alloc_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) ? comp_size : uncomp_size;
if (((sizeof(size_t) == sizeof(mz_uint32))) && (alloc_size > 0x7FFFFFFF)) {
mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
return NULL;
}
if (NULL == (pBuf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, (size_t)alloc_size))) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
return NULL;
}
if (!mz_zip_reader_extract_to_mem(pZip, file_index, pBuf, (size_t)alloc_size, flags)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return NULL;
}
if (pSize) {
*pSize = (size_t)alloc_size;
}
return pBuf;
}
inline void* mz_zip_reader_extract_file_to_heap(mz_zip_archive* pZip, const char* pFilename, size_t* pSize, mz_uint flags)
{
mz_uint32 file_index;
if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) {
if (pSize) {
*pSize = 0;
}
return MZ_FALSE;
}
return mz_zip_reader_extract_to_heap(pZip, file_index, pSize, flags);
}
inline mz_bool mz_zip_reader_extract_to_callback(mz_zip_archive* pZip,
mz_uint file_index,
mz_file_write_func pCallback,
void* pOpaque,
mz_uint flags)
{
int status = TINFL_STATUS_DONE;
mz_uint file_crc32 = MZ_CRC32_INIT;
mz_uint64 read_buf_size, read_buf_ofs = 0, read_buf_avail, comp_remaining, out_buf_ofs = 0, cur_file_ofs;
mz_zip_archive_file_stat file_stat;
void* pRead_buf = NULL;
void* pWrite_buf = NULL;
mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pLocal_header = (mz_uint8*)local_header_u32;
if ((!pZip) || (!pZip->m_pState) || (!pCallback) || (!pZip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) {
return MZ_FALSE;
}
/* A directory or zero length file */
if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) {
return MZ_TRUE;
}
/* Encryption and patch files are not supported. */
if (file_stat.m_bit_flag &
(MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION |
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG))
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
}
/* This function only supports decompressing stored and deflate. */
if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (file_stat.m_method != 0) && (file_stat.m_method != MZ_DEFLATED)) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD);
}
/* Read and do some minimal validation of the local directory entry (this doesn't crack the zip64 stuff, which we already have
* from the central dir) */
cur_file_ofs = file_stat.m_local_header_ofs;
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
cur_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) +
MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS);
if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
/* Decompress the file either directly from memory or from a file input buffer. */
if (pZip->m_pState->m_pMem) {
pRead_buf = (mz_uint8*)pZip->m_pState->m_pMem + cur_file_ofs;
read_buf_size = read_buf_avail = file_stat.m_comp_size;
comp_remaining = 0;
}
else {
read_buf_size = MZ_MIN(file_stat.m_comp_size, (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE);
if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, (size_t)read_buf_size))) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
read_buf_avail = 0;
comp_remaining = file_stat.m_comp_size;
}
if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!file_stat.m_method)) {
/* The file is stored or the caller has requested the compressed data. */
if (pZip->m_pState->m_pMem) {
if (((sizeof(size_t) == sizeof(mz_uint32))) && (file_stat.m_comp_size > MZ_UINT32_MAX)) {
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (pCallback(pOpaque, out_buf_ofs, pRead_buf, (size_t)file_stat.m_comp_size) != file_stat.m_comp_size) {
mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED);
status = TINFL_STATUS_FAILED;
}
else if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) {
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
file_crc32 = (mz_uint32)mz_crc32(file_crc32, (const mz_uint8*)pRead_buf, (size_t)file_stat.m_comp_size);
# endif
}
cur_file_ofs += file_stat.m_comp_size;
out_buf_ofs += file_stat.m_comp_size;
comp_remaining = 0;
}
else {
while (comp_remaining) {
read_buf_avail = MZ_MIN(read_buf_size, comp_remaining);
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, (size_t)read_buf_avail) != read_buf_avail) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
status = TINFL_STATUS_FAILED;
break;
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) {
file_crc32 = (mz_uint32)mz_crc32(file_crc32, (const mz_uint8*)pRead_buf, (size_t)read_buf_avail);
}
# endif
if (pCallback(pOpaque, out_buf_ofs, pRead_buf, (size_t)read_buf_avail) != read_buf_avail) {
mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED);
status = TINFL_STATUS_FAILED;
break;
}
cur_file_ofs += read_buf_avail;
out_buf_ofs += read_buf_avail;
comp_remaining -= read_buf_avail;
}
}
}
else {
tinfl_decompressor inflator;
tinfl_init(&inflator);
if (NULL == (pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, TINFL_LZ_DICT_SIZE))) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
status = TINFL_STATUS_FAILED;
}
else {
do {
mz_uint8* pWrite_buf_cur = (mz_uint8*)pWrite_buf + (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1));
size_t in_buf_size, out_buf_size = TINFL_LZ_DICT_SIZE - (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1));
if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) {
read_buf_avail = MZ_MIN(read_buf_size, comp_remaining);
if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, (size_t)read_buf_avail) != read_buf_avail) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
status = TINFL_STATUS_FAILED;
break;
}
cur_file_ofs += read_buf_avail;
comp_remaining -= read_buf_avail;
read_buf_ofs = 0;
}
in_buf_size = (size_t)read_buf_avail;
status = tinfl_decompress(&inflator,
(const mz_uint8*)pRead_buf + read_buf_ofs,
&in_buf_size,
(mz_uint8*)pWrite_buf,
pWrite_buf_cur,
&out_buf_size,
comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0);
read_buf_avail -= in_buf_size;
read_buf_ofs += in_buf_size;
if (out_buf_size) {
if (pCallback(pOpaque, out_buf_ofs, pWrite_buf_cur, out_buf_size) != out_buf_size) {
mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED);
status = TINFL_STATUS_FAILED;
break;
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
file_crc32 = (mz_uint32)mz_crc32(file_crc32, pWrite_buf_cur, out_buf_size);
# endif
if ((out_buf_ofs += out_buf_size) > file_stat.m_uncomp_size) {
mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED);
status = TINFL_STATUS_FAILED;
break;
}
}
}
while ((status == TINFL_STATUS_NEEDS_MORE_INPUT) || (status == TINFL_STATUS_HAS_MORE_OUTPUT));
}
}
if ((status == TINFL_STATUS_DONE) && (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) {
/* Make sure the entire file was decompressed, and check its CRC. */
if (out_buf_ofs != file_stat.m_uncomp_size) {
mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE);
status = TINFL_STATUS_FAILED;
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
else if (file_crc32 != file_stat.m_crc32) {
mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED);
status = TINFL_STATUS_FAILED;
}
# endif
}
if (!pZip->m_pState->m_pMem) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
}
if (pWrite_buf) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pWrite_buf);
}
return status == TINFL_STATUS_DONE;
}
inline mz_bool mz_zip_reader_extract_file_to_callback(mz_zip_archive* pZip,
const char* pFilename,
mz_file_write_func pCallback,
void* pOpaque,
mz_uint flags)
{
mz_uint32 file_index;
if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) {
return MZ_FALSE;
}
return mz_zip_reader_extract_to_callback(pZip, file_index, pCallback, pOpaque, flags);
}
inline mz_zip_reader_extract_iter_state* mz_zip_reader_extract_iter_new(mz_zip_archive* pZip, mz_uint file_index, mz_uint flags)
{
mz_zip_reader_extract_iter_state* pState;
mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pLocal_header = (mz_uint8*)local_header_u32;
/* Argument sanity check */
if ((!pZip) || (!pZip->m_pState)) {
return NULL;
}
/* Allocate an iterator status structure */
pState = (mz_zip_reader_extract_iter_state*)pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_reader_extract_iter_state));
if (!pState) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
return NULL;
}
/* Fetch file details */
if (!mz_zip_reader_file_stat(pZip, file_index, &pState->file_stat)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
/* Encryption and patch files are not supported. */
if (pState->file_stat.m_bit_flag &
(MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION |
MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG))
{
mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
/* This function only supports decompressing stored and deflate. */
if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (pState->file_stat.m_method != 0) &&
(pState->file_stat.m_method != MZ_DEFLATED)) {
mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
/* Init state - save args */
pState->pZip = pZip;
pState->flags = flags;
/* Init state - reset variables to defaults */
pState->status = TINFL_STATUS_DONE;
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
pState->file_crc32 = MZ_CRC32_INIT;
# endif
pState->read_buf_ofs = 0;
pState->out_buf_ofs = 0;
pState->pRead_buf = NULL;
pState->pWrite_buf = NULL;
pState->out_blk_remain = 0;
/* Read and parse the local directory entry. */
pState->cur_file_ofs = pState->file_stat.m_local_header_ofs;
if (pZip->m_pRead(pZip->m_pIO_opaque, pState->cur_file_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
pState->cur_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) +
MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS);
if ((pState->cur_file_ofs + pState->file_stat.m_comp_size) > pZip->m_archive_size) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
/* Decompress the file either directly from memory or from a file input buffer. */
if (pZip->m_pState->m_pMem) {
pState->pRead_buf = (mz_uint8*)pZip->m_pState->m_pMem + pState->cur_file_ofs;
pState->read_buf_size = pState->read_buf_avail = pState->file_stat.m_comp_size;
pState->comp_remaining = pState->file_stat.m_comp_size;
}
else {
if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!pState->file_stat.m_method))) {
/* Decompression required, therefore intermediate read buffer required */
pState->read_buf_size = MZ_MIN(pState->file_stat.m_comp_size, MZ_ZIP_MAX_IO_BUF_SIZE);
if (NULL == (pState->pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, (size_t)pState->read_buf_size))) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
}
else {
/* Decompression not required - we will be reading directly into user buffer, no temp buf required */
pState->read_buf_size = 0;
}
pState->read_buf_avail = 0;
pState->comp_remaining = pState->file_stat.m_comp_size;
}
if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!pState->file_stat.m_method))) {
/* Decompression required, init decompressor */
tinfl_init(&pState->inflator);
/* Allocate write buffer */
if (NULL == (pState->pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, TINFL_LZ_DICT_SIZE))) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
if (pState->pRead_buf) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pState->pRead_buf);
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
return NULL;
}
}
return pState;
}
inline mz_zip_reader_extract_iter_state*
mz_zip_reader_extract_file_iter_new(mz_zip_archive* pZip, const char* pFilename, mz_uint flags)
{
mz_uint32 file_index;
/* Locate file index by name */
if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) {
return NULL;
}
/* Construct iterator */
return mz_zip_reader_extract_iter_new(pZip, file_index, flags);
}
inline size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state* pState, void* pvBuf, size_t buf_size)
{
size_t copied_to_caller = 0;
/* Argument sanity check */
if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState) || (!pvBuf)) {
return 0;
}
if ((pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!pState->file_stat.m_method)) {
/* The file is stored or the caller has requested the compressed data, calc amount to return. */
copied_to_caller = MZ_MIN(buf_size, pState->comp_remaining);
/* Zip is in memory....or requires reading from a file? */
if (pState->pZip->m_pState->m_pMem) {
/* Copy data to caller's buffer */
memcpy(pvBuf, pState->pRead_buf, copied_to_caller);
pState->pRead_buf = ((mz_uint8*)pState->pRead_buf) + copied_to_caller;
}
else {
/* Read directly into caller's buffer */
if (pState->pZip->m_pRead(pState->pZip->m_pIO_opaque, pState->cur_file_ofs, pvBuf, copied_to_caller) !=
copied_to_caller) {
/* Failed to read all that was asked for, flag failure and alert user */
mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED);
pState->status = TINFL_STATUS_FAILED;
copied_to_caller = 0;
}
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
/* Compute CRC if not returning compressed data only */
if (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) {
pState->file_crc32 = (mz_uint32)mz_crc32(pState->file_crc32, (const mz_uint8*)pvBuf, copied_to_caller);
}
# endif
/* Advance offsets, dec counters */
pState->cur_file_ofs += copied_to_caller;
pState->out_buf_ofs += copied_to_caller;
pState->comp_remaining -= copied_to_caller;
}
else {
do {
/* Calc ptr to write buffer - given current output pos and block size */
mz_uint8* pWrite_buf_cur = (mz_uint8*)pState->pWrite_buf + (pState->out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1));
/* Calc max output size - given current output pos and block size */
size_t in_buf_size, out_buf_size = TINFL_LZ_DICT_SIZE - (pState->out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1));
if (!pState->out_blk_remain) {
/* Read more data from file if none available (and reading from file) */
if ((!pState->read_buf_avail) && (!pState->pZip->m_pState->m_pMem)) {
/* Calc read size */
pState->read_buf_avail = MZ_MIN(pState->read_buf_size, pState->comp_remaining);
if (pState->pZip->m_pRead(pState->pZip->m_pIO_opaque,
pState->cur_file_ofs,
pState->pRead_buf,
(size_t)pState->read_buf_avail) != pState->read_buf_avail)
{
mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED);
pState->status = TINFL_STATUS_FAILED;
break;
}
/* Advance offsets, dec counters */
pState->cur_file_ofs += pState->read_buf_avail;
pState->comp_remaining -= pState->read_buf_avail;
pState->read_buf_ofs = 0;
}
/* Perform decompression */
in_buf_size = (size_t)pState->read_buf_avail;
pState->status = tinfl_decompress(&pState->inflator,
(const mz_uint8*)pState->pRead_buf + pState->read_buf_ofs,
&in_buf_size,
(mz_uint8*)pState->pWrite_buf,
pWrite_buf_cur,
&out_buf_size,
pState->comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0);
pState->read_buf_avail -= in_buf_size;
pState->read_buf_ofs += in_buf_size;
/* Update current output block size remaining */
pState->out_blk_remain = out_buf_size;
}
if (pState->out_blk_remain) {
/* Calc amount to return. */
size_t to_copy = MZ_MIN((buf_size - copied_to_caller), pState->out_blk_remain);
/* Copy data to caller's buffer */
memcpy((uint8_t*)pvBuf + copied_to_caller, pWrite_buf_cur, to_copy);
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
/* Perform CRC */
pState->file_crc32 = (mz_uint32)mz_crc32(pState->file_crc32, pWrite_buf_cur, to_copy);
# endif
/* Decrement data consumed from block */
pState->out_blk_remain -= to_copy;
/* Inc output offset, while performing sanity check */
if ((pState->out_buf_ofs += to_copy) > pState->file_stat.m_uncomp_size) {
mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED);
pState->status = TINFL_STATUS_FAILED;
break;
}
/* Increment counter of data copied to caller */
copied_to_caller += to_copy;
}
}
while ((copied_to_caller < buf_size) &&
((pState->status == TINFL_STATUS_NEEDS_MORE_INPUT) || (pState->status == TINFL_STATUS_HAS_MORE_OUTPUT)));
}
/* Return how many bytes were copied into user buffer */
return copied_to_caller;
}
inline mz_bool mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state* pState)
{
int status;
/* Argument sanity check */
if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState)) {
return MZ_FALSE;
}
/* Was decompression completed and requested? */
if ((pState->status == TINFL_STATUS_DONE) && (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) {
/* Make sure the entire file was decompressed, and check its CRC. */
if (pState->out_buf_ofs != pState->file_stat.m_uncomp_size) {
mz_zip_set_error(pState->pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE);
pState->status = TINFL_STATUS_FAILED;
}
# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
else if (pState->file_crc32 != pState->file_stat.m_crc32) {
mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED);
pState->status = TINFL_STATUS_FAILED;
}
# endif
}
/* Free buffers */
if (!pState->pZip->m_pState->m_pMem) {
pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState->pRead_buf);
}
if (pState->pWrite_buf) {
pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState->pWrite_buf);
}
/* Save status */
status = pState->status;
/* Free context */
pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState);
return status == TINFL_STATUS_DONE;
}
# ifndef MINIZ_NO_STDIO
static size_t mz_zip_file_write_callback(void* pOpaque, mz_uint64 ofs, const void* pBuf, size_t n)
{
(void)ofs;
return MZ_FWRITE(pBuf, 1, n, (MZ_FILE*)pOpaque);
}
inline mz_bool mz_zip_reader_extract_to_file(mz_zip_archive* pZip, mz_uint file_index, const char* pDst_filename, mz_uint flags)
{
mz_bool status;
mz_zip_archive_file_stat file_stat;
MZ_FILE* pFile;
if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) {
return MZ_FALSE;
}
if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE);
}
pFile = MZ_FOPEN(pDst_filename, "wb");
if (!pFile) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
status = mz_zip_reader_extract_to_callback(pZip, file_index, mz_zip_file_write_callback, pFile, flags);
if (MZ_FCLOSE(pFile) == EOF) {
if (status) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED);
}
status = MZ_FALSE;
}
# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO)
if (status) {
mz_zip_set_file_times(pDst_filename, file_stat.m_time, file_stat.m_time);
}
# endif
return status;
}
inline mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive* pZip,
const char* pArchive_filename,
const char* pDst_filename,
mz_uint flags)
{
mz_uint32 file_index;
if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, flags, &file_index)) {
return MZ_FALSE;
}
return mz_zip_reader_extract_to_file(pZip, file_index, pDst_filename, flags);
}
inline mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive* pZip, mz_uint file_index, MZ_FILE* pFile, mz_uint flags)
{
mz_zip_archive_file_stat file_stat;
if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) {
return MZ_FALSE;
}
if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE);
}
return mz_zip_reader_extract_to_callback(pZip, file_index, mz_zip_file_write_callback, pFile, flags);
}
inline mz_bool
mz_zip_reader_extract_file_to_cfile(mz_zip_archive* pZip, const char* pArchive_filename, MZ_FILE* pFile, mz_uint flags)
{
mz_uint32 file_index;
if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, flags, &file_index)) {
return MZ_FALSE;
}
return mz_zip_reader_extract_to_cfile(pZip, file_index, pFile, flags);
}
# endif /* #ifndef MINIZ_NO_STDIO */
static size_t mz_zip_compute_crc32_callback(void* pOpaque, mz_uint64 file_ofs, const void* pBuf, size_t n)
{
mz_uint32* p = (mz_uint32*)pOpaque;
(void)file_ofs;
*p = (mz_uint32)mz_crc32(*p, (const mz_uint8*)pBuf, n);
return n;
}
inline mz_bool mz_zip_validate_file(mz_zip_archive* pZip, mz_uint file_index, mz_uint flags)
{
mz_zip_archive_file_stat file_stat;
mz_zip_internal_state* pState;
const mz_uint8* pCentral_dir_header;
mz_bool found_zip64_ext_data_in_cdir = MZ_FALSE;
mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE;
mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pLocal_header = (mz_uint8*)local_header_u32;
mz_uint64 local_header_ofs = 0;
mz_uint32 local_header_filename_len, local_header_extra_len, local_header_crc32;
mz_uint64 local_header_comp_size, local_header_uncomp_size;
mz_uint32 uncomp_crc32 = MZ_CRC32_INIT;
mz_bool has_data_descriptor;
mz_uint32 local_header_bit_flags;
mz_zip_array file_data_array;
mz_zip_array_init(&file_data_array, 1);
if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || (!pZip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (file_index > pZip->m_total_files) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
pCentral_dir_header = mz_zip_get_cdh(pZip, file_index);
if (!mz_zip_file_stat_internal(pZip, file_index, pCentral_dir_header, &file_stat, &found_zip64_ext_data_in_cdir)) {
return MZ_FALSE;
}
/* A directory or zero length file */
if ((file_stat.m_is_directory) || (!file_stat.m_uncomp_size)) {
return MZ_TRUE;
}
/* Encryption and patch files are not supported. */
if (file_stat.m_is_encrypted) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION);
}
/* This function only supports stored and deflate. */
if ((file_stat.m_method != 0) && (file_stat.m_method != MZ_DEFLATED)) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD);
}
if (!file_stat.m_is_supported) {
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE);
}
/* Read and parse the local directory entry. */
local_header_ofs = file_stat.m_local_header_ofs;
if (pZip->m_pRead(pZip->m_pIO_opaque, local_header_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
local_header_filename_len = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS);
local_header_extra_len = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS);
local_header_comp_size = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS);
local_header_uncomp_size = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS);
local_header_crc32 = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_CRC32_OFS);
local_header_bit_flags = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS);
has_data_descriptor = (local_header_bit_flags & 8) != 0;
if (local_header_filename_len != strlen(file_stat.m_filename)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if ((local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + local_header_filename_len + local_header_extra_len +
file_stat.m_comp_size) > pZip->m_archive_size)
{
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (!mz_zip_array_resize(pZip, &file_data_array, MZ_MAX(local_header_filename_len, local_header_extra_len), MZ_FALSE)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (local_header_filename_len) {
if (pZip->m_pRead(pZip->m_pIO_opaque,
local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE,
file_data_array.m_p,
local_header_filename_len) != local_header_filename_len)
{
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
goto handle_failure;
}
/* I've seen 1 archive that had the same pathname, but used backslashes in the local dir and forward slashes in the central
* dir. Do we care about this? For now, this case will fail validation. */
if (memcmp(file_stat.m_filename, file_data_array.m_p, local_header_filename_len) != 0) {
mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED);
goto handle_failure;
}
}
if ((local_header_extra_len) && ((local_header_comp_size == MZ_UINT32_MAX) || (local_header_uncomp_size == MZ_UINT32_MAX))) {
mz_uint32 extra_size_remaining = local_header_extra_len;
const mz_uint8* pExtra_data = (const mz_uint8*)file_data_array.m_p;
if (pZip->m_pRead(pZip->m_pIO_opaque,
local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + local_header_filename_len,
file_data_array.m_p,
local_header_extra_len) != local_header_extra_len)
{
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
goto handle_failure;
}
do {
mz_uint32 field_id, field_data_size, field_total_size;
if (extra_size_remaining < (sizeof(mz_uint16) * 2)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
field_id = MZ_READ_LE16(pExtra_data);
field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16));
field_total_size = field_data_size + sizeof(mz_uint16) * 2;
if (field_total_size > extra_size_remaining) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) {
const mz_uint8* pSrc_field_data = pExtra_data + sizeof(mz_uint32);
if (field_data_size < sizeof(mz_uint64) * 2) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
goto handle_failure;
}
local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data);
local_header_comp_size = MZ_READ_LE64(pSrc_field_data + sizeof(mz_uint64));
found_zip64_ext_data_in_ldir = MZ_TRUE;
break;
}
pExtra_data += field_total_size;
extra_size_remaining -= field_total_size;
}
while (extra_size_remaining);
}
/* TODO: parse local header extra data when local_header_comp_size is 0xFFFFFFFF! (big_descriptor.zip) */
/* I've seen zips in the wild with the data descriptor bit set, but proper local header values and bogus data descriptors */
if ((has_data_descriptor) && (!local_header_comp_size) && (!local_header_crc32)) {
mz_uint8 descriptor_buf[32];
mz_bool has_id;
const mz_uint8* pSrc;
mz_uint32 file_crc32;
mz_uint64 comp_size = 0, uncomp_size = 0;
mz_uint32 num_descriptor_uint32s = ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) ? 6 : 4;
if (pZip->m_pRead(pZip->m_pIO_opaque,
local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + local_header_filename_len + local_header_extra_len +
file_stat.m_comp_size,
descriptor_buf,
sizeof(mz_uint32) * num_descriptor_uint32s) != (sizeof(mz_uint32) * num_descriptor_uint32s))
{
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
goto handle_failure;
}
has_id = (MZ_READ_LE32(descriptor_buf) == MZ_ZIP_DATA_DESCRIPTOR_ID);
pSrc = has_id ? (descriptor_buf + sizeof(mz_uint32)) : descriptor_buf;
file_crc32 = MZ_READ_LE32(pSrc);
if ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) {
comp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32));
uncomp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32) + sizeof(mz_uint64));
}
else {
comp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32));
uncomp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32) + sizeof(mz_uint32));
}
if ((file_crc32 != file_stat.m_crc32) || (comp_size != file_stat.m_comp_size) || (uncomp_size != file_stat.m_uncomp_size)) {
mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED);
goto handle_failure;
}
}
else {
if ((local_header_crc32 != file_stat.m_crc32) || (local_header_comp_size != file_stat.m_comp_size) ||
(local_header_uncomp_size != file_stat.m_uncomp_size))
{
mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED);
goto handle_failure;
}
}
mz_zip_array_clear(pZip, &file_data_array);
if ((flags & MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY) == 0) {
if (!mz_zip_reader_extract_to_callback(pZip, file_index, mz_zip_compute_crc32_callback, &uncomp_crc32, 0)) {
return MZ_FALSE;
}
/* 1 more check to be sure, although the extract checks too. */
if (uncomp_crc32 != file_stat.m_crc32) {
mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED);
return MZ_FALSE;
}
}
return MZ_TRUE;
handle_failure:
mz_zip_array_clear(pZip, &file_data_array);
return MZ_FALSE;
}
inline mz_bool mz_zip_validate_archive(mz_zip_archive* pZip, mz_uint flags)
{
mz_zip_internal_state* pState;
uint32_t i;
if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || (!pZip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
/* Basic sanity checks */
if (!pState->m_zip64) {
if (pZip->m_total_files > MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
if (pZip->m_archive_size > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
}
else {
if (pZip->m_total_files >= MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
}
for (i = 0; i < pZip->m_total_files; i++) {
if (MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG & flags) {
mz_uint32 found_index;
mz_zip_archive_file_stat stat;
if (!mz_zip_reader_file_stat(pZip, i, &stat)) {
return MZ_FALSE;
}
if (!mz_zip_reader_locate_file_v2(pZip, stat.m_filename, NULL, 0, &found_index)) {
return MZ_FALSE;
}
/* This check can fail if there are duplicate filenames in the archive (which we don't check for when writing - that's
* up to the user) */
if (found_index != i) {
return mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED);
}
}
if (!mz_zip_validate_file(pZip, i, flags)) {
return MZ_FALSE;
}
}
return MZ_TRUE;
}
inline mz_bool mz_zip_validate_mem_archive(const void* pMem, size_t size, mz_uint flags, mz_zip_error* pErr)
{
mz_bool success = MZ_TRUE;
mz_zip_archive zip;
mz_zip_error actual_err = MZ_ZIP_NO_ERROR;
if ((!pMem) || (!size)) {
if (pErr) {
*pErr = MZ_ZIP_INVALID_PARAMETER;
}
return MZ_FALSE;
}
mz_zip_zero_struct(&zip);
if (!mz_zip_reader_init_mem(&zip, pMem, size, flags)) {
if (pErr) {
*pErr = zip.m_last_error;
}
return MZ_FALSE;
}
if (!mz_zip_validate_archive(&zip, flags)) {
actual_err = zip.m_last_error;
success = MZ_FALSE;
}
if (!mz_zip_reader_end_internal(&zip, success)) {
if (!actual_err) {
actual_err = zip.m_last_error;
}
success = MZ_FALSE;
}
if (pErr) {
*pErr = actual_err;
}
return success;
}
# ifndef MINIZ_NO_STDIO
inline mz_bool mz_zip_validate_file_archive(const char* pFilename, mz_uint flags, mz_zip_error* pErr)
{
mz_bool success = MZ_TRUE;
mz_zip_archive zip;
mz_zip_error actual_err = MZ_ZIP_NO_ERROR;
if (!pFilename) {
if (pErr) {
*pErr = MZ_ZIP_INVALID_PARAMETER;
}
return MZ_FALSE;
}
mz_zip_zero_struct(&zip);
if (!mz_zip_reader_init_file_v2(&zip, pFilename, flags, 0, 0)) {
if (pErr) {
*pErr = zip.m_last_error;
}
return MZ_FALSE;
}
if (!mz_zip_validate_archive(&zip, flags)) {
actual_err = zip.m_last_error;
success = MZ_FALSE;
}
if (!mz_zip_reader_end_internal(&zip, success)) {
if (!actual_err) {
actual_err = zip.m_last_error;
}
success = MZ_FALSE;
}
if (pErr) {
*pErr = actual_err;
}
return success;
}
# endif /* #ifndef MINIZ_NO_STDIO */
/* ------------------- .ZIP archive writing */
# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
static MZ_FORCEINLINE void mz_write_le16(mz_uint8* p, mz_uint16 v)
{
p[0] = (mz_uint8)v;
p[1] = (mz_uint8)(v >> 8);
}
static MZ_FORCEINLINE void mz_write_le32(mz_uint8* p, mz_uint32 v)
{
p[0] = (mz_uint8)v;
p[1] = (mz_uint8)(v >> 8);
p[2] = (mz_uint8)(v >> 16);
p[3] = (mz_uint8)(v >> 24);
}
static MZ_FORCEINLINE void mz_write_le64(mz_uint8* p, mz_uint64 v)
{
mz_write_le32(p, (mz_uint32)v);
mz_write_le32(p + sizeof(mz_uint32), (mz_uint32)(v >> 32));
}
# define MZ_WRITE_LE16(p, v) mz_write_le16((mz_uint8*)(p), (mz_uint16)(v))
# define MZ_WRITE_LE32(p, v) mz_write_le32((mz_uint8*)(p), (mz_uint32)(v))
# define MZ_WRITE_LE64(p, v) mz_write_le64((mz_uint8*)(p), (mz_uint64)(v))
static size_t mz_zip_heap_write_func(void* pOpaque, mz_uint64 file_ofs, const void* pBuf, size_t n)
{
mz_zip_archive* pZip = (mz_zip_archive*)pOpaque;
mz_zip_internal_state* pState = pZip->m_pState;
mz_uint64 new_size = MZ_MAX(file_ofs + n, pState->m_mem_size);
if (!n) {
return 0;
}
/* An allocation this big is likely to just fail on 32-bit systems, so don't even go there. */
if ((sizeof(size_t) == sizeof(mz_uint32)) && (new_size > 0x7FFFFFFF)) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE);
return 0;
}
if (new_size > pState->m_mem_capacity) {
void* pNew_block;
size_t new_capacity = MZ_MAX(64, pState->m_mem_capacity);
while (new_capacity < new_size) {
new_capacity *= 2;
}
if (NULL == (pNew_block = pZip->m_pRealloc(pZip->m_pAlloc_opaque, pState->m_pMem, 1, new_capacity))) {
mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
return 0;
}
pState->m_pMem = pNew_block;
pState->m_mem_capacity = new_capacity;
}
memcpy((mz_uint8*)pState->m_pMem + file_ofs, pBuf, n);
pState->m_mem_size = (size_t)new_size;
return n;
}
static mz_bool mz_zip_writer_end_internal(mz_zip_archive* pZip, mz_bool set_last_error)
{
mz_zip_internal_state* pState;
mz_bool status = MZ_TRUE;
if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) ||
((pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) && (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED)))
{
if (set_last_error) {
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
return MZ_FALSE;
}
pState = pZip->m_pState;
pZip->m_pState = NULL;
mz_zip_array_clear(pZip, &pState->m_central_dir);
mz_zip_array_clear(pZip, &pState->m_central_dir_offsets);
mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets);
# ifndef MINIZ_NO_STDIO
if (pState->m_pFile) {
if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) {
if (MZ_FCLOSE(pState->m_pFile) == EOF) {
if (set_last_error) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED);
}
status = MZ_FALSE;
}
}
pState->m_pFile = NULL;
}
# endif /* #ifndef MINIZ_NO_STDIO */
if ((pZip->m_pWrite == mz_zip_heap_write_func) && (pState->m_pMem)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pState->m_pMem);
pState->m_pMem = NULL;
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pState);
pZip->m_zip_mode = MZ_ZIP_MODE_INVALID;
return status;
}
inline mz_bool mz_zip_writer_init_v2(mz_zip_archive* pZip, mz_uint64 existing_size, mz_uint flags)
{
mz_bool zip64 = (flags & MZ_ZIP_FLAG_WRITE_ZIP64) != 0;
if ((!pZip) || (pZip->m_pState) || (!pZip->m_pWrite) || (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) {
if (!pZip->m_pRead) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
}
if (pZip->m_file_offset_alignment) {
/* Ensure user specified file offset alignment is a power of 2. */
if (pZip->m_file_offset_alignment & (pZip->m_file_offset_alignment - 1)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
}
if (!pZip->m_pAlloc) {
pZip->m_pAlloc = miniz_def_alloc_func;
}
if (!pZip->m_pFree) {
pZip->m_pFree = miniz_def_free_func;
}
if (!pZip->m_pRealloc) {
pZip->m_pRealloc = miniz_def_realloc_func;
}
pZip->m_archive_size = existing_size;
pZip->m_central_directory_file_ofs = 0;
pZip->m_total_files = 0;
if (NULL == (pZip->m_pState = (mz_zip_internal_state*)pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state))))
{
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, sizeof(mz_uint8));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32));
MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_sorted_central_dir_offsets, sizeof(mz_uint32));
pZip->m_pState->m_zip64 = zip64;
pZip->m_pState->m_zip64_has_extended_info_fields = zip64;
pZip->m_zip_type = MZ_ZIP_TYPE_USER;
pZip->m_zip_mode = MZ_ZIP_MODE_WRITING;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_init(mz_zip_archive* pZip, mz_uint64 existing_size)
{
return mz_zip_writer_init_v2(pZip, existing_size, 0);
}
inline mz_bool mz_zip_writer_init_heap_v2(mz_zip_archive* pZip,
size_t size_to_reserve_at_beginning,
size_t initial_allocation_size,
mz_uint flags)
{
pZip->m_pWrite = mz_zip_heap_write_func;
pZip->m_pNeeds_keepalive = NULL;
if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) {
pZip->m_pRead = mz_zip_mem_read_func;
}
pZip->m_pIO_opaque = pZip;
if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, flags)) {
return MZ_FALSE;
}
pZip->m_zip_type = MZ_ZIP_TYPE_HEAP;
if (0 != (initial_allocation_size = MZ_MAX(initial_allocation_size, size_to_reserve_at_beginning))) {
if (NULL == (pZip->m_pState->m_pMem = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, initial_allocation_size))) {
mz_zip_writer_end_internal(pZip, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
pZip->m_pState->m_mem_capacity = initial_allocation_size;
}
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_init_heap(mz_zip_archive* pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size)
{
return mz_zip_writer_init_heap_v2(pZip, size_to_reserve_at_beginning, initial_allocation_size, 0);
}
# ifndef MINIZ_NO_STDIO
static size_t mz_zip_file_write_func(void* pOpaque, mz_uint64 file_ofs, const void* pBuf, size_t n)
{
mz_zip_archive* pZip = (mz_zip_archive*)pOpaque;
mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile);
file_ofs += pZip->m_pState->m_file_archive_start_ofs;
if (((mz_int64)file_ofs < 0) ||
(((cur_ofs != (mz_int64)file_ofs)) && (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64)file_ofs, SEEK_SET)))) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED);
return 0;
}
return MZ_FWRITE(pBuf, 1, n, pZip->m_pState->m_pFile);
}
inline mz_bool mz_zip_writer_init_file(mz_zip_archive* pZip, const char* pFilename, mz_uint64 size_to_reserve_at_beginning)
{
return mz_zip_writer_init_file_v2(pZip, pFilename, size_to_reserve_at_beginning, 0);
}
inline mz_bool
mz_zip_writer_init_file_v2(mz_zip_archive* pZip, const char* pFilename, mz_uint64 size_to_reserve_at_beginning, mz_uint flags)
{
MZ_FILE* pFile;
pZip->m_pWrite = mz_zip_file_write_func;
pZip->m_pNeeds_keepalive = NULL;
if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) {
pZip->m_pRead = mz_zip_file_read_func;
}
pZip->m_pIO_opaque = pZip;
if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, flags)) {
return MZ_FALSE;
}
if (NULL == (pFile = MZ_FOPEN(pFilename, (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) ? "w+b" : "wb"))) {
mz_zip_writer_end(pZip);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
pZip->m_pState->m_pFile = pFile;
pZip->m_zip_type = MZ_ZIP_TYPE_FILE;
if (size_to_reserve_at_beginning) {
mz_uint64 cur_ofs = 0;
char buf[4096];
MZ_CLEAR_OBJ(buf);
do {
size_t n = (size_t)MZ_MIN(sizeof(buf), size_to_reserve_at_beginning);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_ofs, buf, n) != n) {
mz_zip_writer_end(pZip);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_ofs += n;
size_to_reserve_at_beginning -= n;
}
while (size_to_reserve_at_beginning);
}
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_init_cfile(mz_zip_archive* pZip, MZ_FILE* pFile, mz_uint flags)
{
pZip->m_pWrite = mz_zip_file_write_func;
pZip->m_pNeeds_keepalive = NULL;
if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) {
pZip->m_pRead = mz_zip_file_read_func;
}
pZip->m_pIO_opaque = pZip;
if (!mz_zip_writer_init_v2(pZip, 0, flags)) {
return MZ_FALSE;
}
pZip->m_pState->m_pFile = pFile;
pZip->m_pState->m_file_archive_start_ofs = MZ_FTELL64(pZip->m_pState->m_pFile);
pZip->m_zip_type = MZ_ZIP_TYPE_CFILE;
return MZ_TRUE;
}
# endif /* #ifndef MINIZ_NO_STDIO */
inline mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive* pZip, const char* pFilename, mz_uint flags)
{
mz_zip_internal_state* pState;
if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (flags & MZ_ZIP_FLAG_WRITE_ZIP64) {
/* We don't support converting a non-zip64 file to zip64 - this seems like more trouble than it's worth. (What about the
* existing 32-bit data descriptors that could follow the compressed data?) */
if (!pZip->m_pState->m_zip64) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
}
/* No sense in trying to write to an archive that's already at the support max size */
if (pZip->m_pState->m_zip64) {
if (pZip->m_total_files == MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
else {
if (pZip->m_total_files == MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
if ((pZip->m_archive_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE);
}
}
pState = pZip->m_pState;
if (pState->m_pFile) {
# ifdef MINIZ_NO_STDIO
(void)pFilename;
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
# else
if (pZip->m_pIO_opaque != pZip) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) {
if (!pFilename) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
/* Archive is being read from stdio and was originally opened only for reading. Try to reopen as writable. */
if (NULL == (pState->m_pFile = MZ_FREOPEN(pFilename, "r+b", pState->m_pFile))) {
/* The mz_zip_archive is now in a bogus state because pState->m_pFile is NULL, so just close it. */
mz_zip_reader_end_internal(pZip, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
}
pZip->m_pWrite = mz_zip_file_write_func;
pZip->m_pNeeds_keepalive = NULL;
# endif /* #ifdef MINIZ_NO_STDIO */
}
else if (pState->m_pMem) {
/* Archive lives in a memory block. Assume it's from the heap that we can resize using the realloc callback. */
if (pZip->m_pIO_opaque != pZip) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState->m_mem_capacity = pState->m_mem_size;
pZip->m_pWrite = mz_zip_heap_write_func;
pZip->m_pNeeds_keepalive = NULL;
}
/* Archive is being read via a user provided read function - make sure the user has specified a write function too. */
else if (!pZip->m_pWrite) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
/* Start writing new files at the archive's current central directory location. */
/* TODO: We could add a flag that lets the user start writing immediately AFTER the existing central dir - this would be safer.
*/
pZip->m_archive_size = pZip->m_central_directory_file_ofs;
pZip->m_central_directory_file_ofs = 0;
/* Clear the sorted central dir offsets, they aren't useful or maintained now. */
/* Even though we're now in write mode, files can still be extracted and verified, but file locates will be slow. */
/* TODO: We could easily maintain the sorted central directory offsets. */
mz_zip_array_clear(pZip, &pZip->m_pState->m_sorted_central_dir_offsets);
pZip->m_zip_mode = MZ_ZIP_MODE_WRITING;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_init_from_reader(mz_zip_archive* pZip, const char* pFilename)
{
return mz_zip_writer_init_from_reader_v2(pZip, pFilename, 0);
}
/* TODO: pArchive_name is a terrible name here! */
inline mz_bool mz_zip_writer_add_mem(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
mz_uint level_and_flags)
{
return mz_zip_writer_add_mem_ex(pZip, pArchive_name, pBuf, buf_size, NULL, 0, level_and_flags, 0, 0);
}
typedef struct
{
mz_zip_archive* m_pZip;
mz_uint64 m_cur_archive_file_ofs;
mz_uint64 m_comp_size;
} mz_zip_writer_add_state;
static mz_bool mz_zip_writer_add_put_buf_callback(const void* pBuf, int len, void* pUser)
{
mz_zip_writer_add_state* pState = (mz_zip_writer_add_state*)pUser;
if ((int)pState->m_pZip->m_pWrite(pState->m_pZip->m_pIO_opaque, pState->m_cur_archive_file_ofs, pBuf, len) != len) {
return MZ_FALSE;
}
pState->m_cur_archive_file_ofs += len;
pState->m_comp_size += len;
return MZ_TRUE;
}
# define MZ_ZIP64_MAX_LOCAL_EXTRA_FIELD_SIZE (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 2)
# define MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 3)
static mz_uint32 mz_zip_writer_create_zip64_extra_data(mz_uint8* pBuf,
mz_uint64* pUncomp_size,
mz_uint64* pComp_size,
mz_uint64* pLocal_header_ofs)
{
mz_uint8* pDst = pBuf;
mz_uint32 field_size = 0;
MZ_WRITE_LE16(pDst + 0, MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID);
MZ_WRITE_LE16(pDst + 2, 0);
pDst += sizeof(mz_uint16) * 2;
if (pUncomp_size) {
MZ_WRITE_LE64(pDst, *pUncomp_size);
pDst += sizeof(mz_uint64);
field_size += sizeof(mz_uint64);
}
if (pComp_size) {
MZ_WRITE_LE64(pDst, *pComp_size);
pDst += sizeof(mz_uint64);
field_size += sizeof(mz_uint64);
}
if (pLocal_header_ofs) {
MZ_WRITE_LE64(pDst, *pLocal_header_ofs);
pDst += sizeof(mz_uint64);
field_size += sizeof(mz_uint64);
}
MZ_WRITE_LE16(pBuf + 2, field_size);
return (mz_uint32)(pDst - pBuf);
}
static mz_bool mz_zip_writer_create_local_dir_header(mz_zip_archive* pZip,
mz_uint8* pDst,
mz_uint16 filename_size,
mz_uint16 extra_size,
mz_uint64 uncomp_size,
mz_uint64 comp_size,
mz_uint32 uncomp_crc32,
mz_uint16 method,
mz_uint16 bit_flags,
mz_uint16 dos_time,
mz_uint16 dos_date)
{
(void)pZip;
memset(pDst, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE);
MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_SIG_OFS, MZ_ZIP_LOCAL_DIR_HEADER_SIG);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_VERSION_NEEDED_OFS, method ? 20 : 0);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_BIT_FLAG_OFS, bit_flags);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_METHOD_OFS, method);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_TIME_OFS, dos_time);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_DATE_OFS, dos_date);
MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_CRC32_OFS, uncomp_crc32);
MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS, MZ_MIN(comp_size, MZ_UINT32_MAX));
MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS, MZ_MIN(uncomp_size, MZ_UINT32_MAX));
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILENAME_LEN_OFS, filename_size);
MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_EXTRA_LEN_OFS, extra_size);
return MZ_TRUE;
}
static mz_bool mz_zip_writer_create_central_dir_header(mz_zip_archive* pZip,
mz_uint8* pDst,
mz_uint16 filename_size,
mz_uint16 extra_size,
mz_uint16 comment_size,
mz_uint64 uncomp_size,
mz_uint64 comp_size,
mz_uint32 uncomp_crc32,
mz_uint16 method,
mz_uint16 bit_flags,
mz_uint16 dos_time,
mz_uint16 dos_date,
mz_uint64 local_header_ofs,
mz_uint32 ext_attributes)
{
(void)pZip;
memset(pDst, 0, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE);
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_SIG_OFS, MZ_ZIP_CENTRAL_DIR_HEADER_SIG);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_VERSION_NEEDED_OFS, method ? 20 : 0);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_BIT_FLAG_OFS, bit_flags);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_METHOD_OFS, method);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_TIME_OFS, dos_time);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_DATE_OFS, dos_date);
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_CRC32_OFS, uncomp_crc32);
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, MZ_MIN(comp_size, MZ_UINT32_MAX));
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, MZ_MIN(uncomp_size, MZ_UINT32_MAX));
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILENAME_LEN_OFS, filename_size);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_EXTRA_LEN_OFS, extra_size);
MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_COMMENT_LEN_OFS, comment_size);
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS, ext_attributes);
MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_LOCAL_HEADER_OFS, MZ_MIN(local_header_ofs, MZ_UINT32_MAX));
return MZ_TRUE;
}
static mz_bool mz_zip_writer_add_to_central_dir(mz_zip_archive* pZip,
const char* pFilename,
mz_uint16 filename_size,
const void* pExtra,
mz_uint16 extra_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint64 uncomp_size,
mz_uint64 comp_size,
mz_uint32 uncomp_crc32,
mz_uint16 method,
mz_uint16 bit_flags,
mz_uint16 dos_time,
mz_uint16 dos_date,
mz_uint64 local_header_ofs,
mz_uint32 ext_attributes,
const char* user_extra_data,
mz_uint user_extra_data_len)
{
mz_zip_internal_state* pState = pZip->m_pState;
mz_uint32 central_dir_ofs = (mz_uint32)pState->m_central_dir.m_size;
size_t orig_central_dir_size = pState->m_central_dir.m_size;
mz_uint8 central_dir_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE];
if (!pZip->m_pState->m_zip64) {
if (local_header_ofs > 0xFFFFFFFF) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE);
}
}
/* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */
if (((mz_uint64)pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + extra_size +
user_extra_data_len + comment_size) >= MZ_UINT32_MAX)
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
if (!mz_zip_writer_create_central_dir_header(pZip,
central_dir_header,
filename_size,
extra_size + user_extra_data_len,
comment_size,
uncomp_size,
comp_size,
uncomp_crc32,
method,
bit_flags,
dos_time,
dos_date,
local_header_ofs,
ext_attributes))
{
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if ((!mz_zip_array_push_back(pZip, &pState->m_central_dir, central_dir_header, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) ||
(!mz_zip_array_push_back(pZip, &pState->m_central_dir, pFilename, filename_size)) ||
(!mz_zip_array_push_back(pZip, &pState->m_central_dir, pExtra, extra_size)) ||
(!mz_zip_array_push_back(pZip, &pState->m_central_dir, user_extra_data, user_extra_data_len)) ||
(!mz_zip_array_push_back(pZip, &pState->m_central_dir, pComment, comment_size)) ||
(!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, &central_dir_ofs, 1)))
{
/* Try to resize the central directory array back into its original state. */
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
return MZ_TRUE;
}
static mz_bool mz_zip_writer_validate_archive_name(const char* pArchive_name)
{
/* Basic ZIP archive filename validity checks: Valid filenames cannot start with a forward slash, cannot contain a drive letter,
* and cannot use DOS-style backward slashes. */
if (*pArchive_name == '/') {
return MZ_FALSE;
}
while (*pArchive_name) {
if ((*pArchive_name == '\\') || (*pArchive_name == ':')) {
return MZ_FALSE;
}
pArchive_name++;
}
return MZ_TRUE;
}
static mz_uint mz_zip_writer_compute_padding_needed_for_file_alignment(mz_zip_archive* pZip)
{
mz_uint32 n;
if (!pZip->m_file_offset_alignment) {
return 0;
}
n = (mz_uint32)(pZip->m_archive_size & (pZip->m_file_offset_alignment - 1));
return (mz_uint)((pZip->m_file_offset_alignment - n) & (pZip->m_file_offset_alignment - 1));
}
static mz_bool mz_zip_writer_write_zeros(mz_zip_archive* pZip, mz_uint64 cur_file_ofs, mz_uint32 n)
{
char buf[4096];
memset(buf, 0, MZ_MIN(sizeof(buf), n));
while (n) {
mz_uint32 s = MZ_MIN(sizeof(buf), n);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_file_ofs, buf, s) != s) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_file_ofs += s;
n -= s;
}
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_add_mem_ex(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_uint64 uncomp_size,
mz_uint32 uncomp_crc32)
{
return mz_zip_writer_add_mem_ex_v2(pZip,
pArchive_name,
pBuf,
buf_size,
pComment,
comment_size,
level_and_flags,
uncomp_size,
uncomp_crc32,
NULL,
NULL,
0,
NULL,
0);
}
inline mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive* pZip,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_uint64 uncomp_size,
mz_uint32 uncomp_crc32,
MZ_TIME_T* last_modified,
const char* user_extra_data,
mz_uint user_extra_data_len,
const char* user_extra_data_central,
mz_uint user_extra_data_central_len)
{
mz_uint16 method = 0, dos_time = 0, dos_date = 0;
mz_uint level, ext_attributes = 0, num_alignment_padding_bytes;
mz_uint64 local_dir_header_ofs = pZip->m_archive_size, cur_archive_file_ofs = pZip->m_archive_size, comp_size = 0;
size_t archive_name_size;
mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE];
tdefl_compressor* pComp = NULL;
mz_bool store_data_uncompressed;
mz_zip_internal_state* pState;
mz_uint8* pExtra_data = NULL;
mz_uint32 extra_size = 0;
mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE];
mz_uint16 bit_flags = 0;
if ((int)level_and_flags < 0) {
level_and_flags = MZ_DEFAULT_LEVEL;
}
if (uncomp_size || (buf_size && !(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) {
bit_flags |= MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR;
}
if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) {
bit_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8;
}
level = level_and_flags & 0xF;
store_data_uncompressed = ((!level) || (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA));
if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || ((buf_size) && (!pBuf)) || (!pArchive_name) ||
((comment_size) && (!pComment)) || (level > MZ_UBER_COMPRESSION))
{
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
if (pState->m_zip64) {
if (pZip->m_total_files == MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
else {
if (pZip->m_total_files == MZ_UINT16_MAX) {
pState->m_zip64 = MZ_TRUE;
/*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */
}
if ((buf_size > 0xFFFFFFFF) || (uncomp_size > 0xFFFFFFFF)) {
pState->m_zip64 = MZ_TRUE;
/*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */
}
}
if ((!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (uncomp_size)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_writer_validate_archive_name(pArchive_name)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME);
}
# ifndef MINIZ_NO_TIME
if (last_modified != NULL) {
mz_zip_time_t_to_dos_time(*last_modified, &dos_time, &dos_date);
}
else {
MZ_TIME_T cur_time;
time(&cur_time);
mz_zip_time_t_to_dos_time(cur_time, &dos_time, &dos_date);
}
# endif /* #ifndef MINIZ_NO_TIME */
if (!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) {
uncomp_crc32 = (mz_uint32)mz_crc32(MZ_CRC32_INIT, (const mz_uint8*)pBuf, buf_size);
uncomp_size = buf_size;
if (uncomp_size <= 3) {
level = 0;
store_data_uncompressed = MZ_TRUE;
}
}
archive_name_size = strlen(pArchive_name);
if (archive_name_size > MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME);
}
num_alignment_padding_bytes = mz_zip_writer_compute_padding_needed_for_file_alignment(pZip);
/* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */
if (((mz_uint64)pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size +
MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= MZ_UINT32_MAX)
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
if (!pState->m_zip64) {
/* Bail early if the archive would obviously become too large */
if ((pZip->m_archive_size + num_alignment_padding_bytes + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size +
MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size + user_extra_data_len +
pState->m_central_dir.m_size + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + user_extra_data_central_len +
MZ_ZIP_DATA_DESCRIPTER_SIZE32) > 0xFFFFFFFF)
{
pState->m_zip64 = MZ_TRUE;
/*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */
}
}
if ((archive_name_size) && (pArchive_name[archive_name_size - 1] == '/')) {
/* Set DOS Subdirectory attribute bit. */
ext_attributes |= MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG;
/* Subdirectories cannot contain data. */
if ((buf_size) || (uncomp_size)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
}
/* Try to do any allocations before writing to the archive, so if an allocation fails the file remains unmodified. (A good idea
* if we're doing an in-place modification.) */
if ((!mz_zip_array_ensure_room(pZip,
&pState->m_central_dir,
MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size +
(pState->m_zip64 ? MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE : 0))) ||
(!mz_zip_array_ensure_room(pZip, &pState->m_central_dir_offsets, 1)))
{
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if ((!store_data_uncompressed) && (buf_size)) {
if (NULL == (pComp = (tdefl_compressor*)pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)))) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
}
if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, num_alignment_padding_bytes)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
return MZ_FALSE;
}
local_dir_header_ofs += num_alignment_padding_bytes;
if (pZip->m_file_offset_alignment) {
MZ_ASSERT((local_dir_header_ofs & (pZip->m_file_offset_alignment - 1)) == 0);
}
cur_archive_file_ofs += num_alignment_padding_bytes;
MZ_CLEAR_OBJ(local_dir_header);
if (!store_data_uncompressed || (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) {
method = MZ_DEFLATED;
}
if (pState->m_zip64) {
if (uncomp_size >= MZ_UINT32_MAX || local_dir_header_ofs >= MZ_UINT32_MAX) {
pExtra_data = extra_data;
extra_size =
mz_zip_writer_create_zip64_extra_data(extra_data,
(uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL,
(uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL,
(local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL);
}
if (!mz_zip_writer_create_local_dir_header(pZip,
local_dir_header,
(mz_uint16)archive_name_size,
extra_size + user_extra_data_len,
0,
0,
0,
method,
bit_flags,
dos_time,
dos_date))
{
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, local_dir_header, sizeof(local_dir_header)) !=
sizeof(local_dir_header)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += sizeof(local_dir_header);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, archive_name_size) != archive_name_size) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += archive_name_size;
if (pExtra_data != NULL) {
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, extra_data, extra_size) != extra_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += extra_size;
}
}
else {
if ((comp_size > MZ_UINT32_MAX) || (cur_archive_file_ofs > MZ_UINT32_MAX)) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
if (!mz_zip_writer_create_local_dir_header(pZip,
local_dir_header,
(mz_uint16)archive_name_size,
user_extra_data_len,
0,
0,
0,
method,
bit_flags,
dos_time,
dos_date))
{
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, local_dir_header, sizeof(local_dir_header)) !=
sizeof(local_dir_header)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += sizeof(local_dir_header);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, archive_name_size) != archive_name_size) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += archive_name_size;
}
if (user_extra_data_len > 0) {
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, user_extra_data, user_extra_data_len) != user_extra_data_len) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += user_extra_data_len;
}
if (store_data_uncompressed) {
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pBuf, buf_size) != buf_size) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += buf_size;
comp_size = buf_size;
}
else if (buf_size) {
mz_zip_writer_add_state state;
state.m_pZip = pZip;
state.m_cur_archive_file_ofs = cur_archive_file_ofs;
state.m_comp_size = 0;
if ((tdefl_init(pComp,
mz_zip_writer_add_put_buf_callback,
&state,
tdefl_create_comp_flags_from_zip_params(level, -15, MZ_DEFAULT_STRATEGY)) != TDEFL_STATUS_OKAY) ||
(tdefl_compress_buffer(pComp, pBuf, buf_size, TDEFL_FINISH) != TDEFL_STATUS_DONE))
{
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
return mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED);
}
comp_size = state.m_comp_size;
cur_archive_file_ofs = state.m_cur_archive_file_ofs;
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
pComp = NULL;
if (uncomp_size) {
mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64];
mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32;
MZ_ASSERT(bit_flags & MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR);
MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID);
MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32);
if (pExtra_data == NULL) {
if (comp_size > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
MZ_WRITE_LE32(local_dir_footer + 8, comp_size);
MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size);
}
else {
MZ_WRITE_LE64(local_dir_footer + 8, comp_size);
MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size);
local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64;
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, local_dir_footer, local_dir_footer_size) !=
local_dir_footer_size) {
return MZ_FALSE;
}
cur_archive_file_ofs += local_dir_footer_size;
}
if (pExtra_data != NULL) {
extra_size = mz_zip_writer_create_zip64_extra_data(extra_data,
(uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL,
(uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL,
(local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL);
}
if (!mz_zip_writer_add_to_central_dir(pZip,
pArchive_name,
(mz_uint16)archive_name_size,
pExtra_data,
extra_size,
pComment,
comment_size,
uncomp_size,
comp_size,
uncomp_crc32,
method,
bit_flags,
dos_time,
dos_date,
local_dir_header_ofs,
ext_attributes,
user_extra_data_central,
user_extra_data_central_len))
{
return MZ_FALSE;
}
pZip->m_total_files++;
pZip->m_archive_size = cur_archive_file_ofs;
return MZ_TRUE;
}
# ifndef MINIZ_NO_STDIO
inline mz_bool mz_zip_writer_add_cfile(mz_zip_archive* pZip,
const char* pArchive_name,
MZ_FILE* pSrc_file,
mz_uint64 size_to_add,
const MZ_TIME_T* pFile_time,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
const char* user_extra_data,
mz_uint user_extra_data_len,
const char* user_extra_data_central,
mz_uint user_extra_data_central_len)
{
mz_uint16 gen_flags = MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR;
mz_uint uncomp_crc32 = MZ_CRC32_INIT, level, num_alignment_padding_bytes;
mz_uint16 method = 0, dos_time = 0, dos_date = 0, ext_attributes = 0;
mz_uint64 local_dir_header_ofs, cur_archive_file_ofs = pZip->m_archive_size, uncomp_size = size_to_add, comp_size = 0;
size_t archive_name_size;
mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE];
mz_uint8* pExtra_data = NULL;
mz_uint32 extra_size = 0;
mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE];
mz_zip_internal_state* pState;
if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) {
gen_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8;
}
if ((int)level_and_flags < 0) {
level_and_flags = MZ_DEFAULT_LEVEL;
}
level = level_and_flags & 0xF;
/* Sanity checks */
if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pArchive_name) ||
((comment_size) && (!pComment)) || (level > MZ_UBER_COMPRESSION))
{
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
if ((!pState->m_zip64) && (uncomp_size > MZ_UINT32_MAX)) {
/* Source file is too large for non-zip64 */
/*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */
pState->m_zip64 = MZ_TRUE;
}
/* We could support this, but why? */
if (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_writer_validate_archive_name(pArchive_name)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME);
}
if (pState->m_zip64) {
if (pZip->m_total_files == MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
else {
if (pZip->m_total_files == MZ_UINT16_MAX) {
pState->m_zip64 = MZ_TRUE;
/*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */
}
}
archive_name_size = strlen(pArchive_name);
if (archive_name_size > MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME);
}
num_alignment_padding_bytes = mz_zip_writer_compute_padding_needed_for_file_alignment(pZip);
/* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */
if (((mz_uint64)pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size +
MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= MZ_UINT32_MAX)
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
if (!pState->m_zip64) {
/* Bail early if the archive would obviously become too large */
if ((pZip->m_archive_size + num_alignment_padding_bytes + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size +
MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size + user_extra_data_len +
pState->m_central_dir.m_size + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 1024 + MZ_ZIP_DATA_DESCRIPTER_SIZE32 +
user_extra_data_central_len) > 0xFFFFFFFF)
{
pState->m_zip64 = MZ_TRUE;
/*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */
}
}
# ifndef MINIZ_NO_TIME
if (pFile_time) {
mz_zip_time_t_to_dos_time(*pFile_time, &dos_time, &dos_date);
}
# endif
if (uncomp_size <= 3) {
level = 0;
}
if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, num_alignment_padding_bytes)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += num_alignment_padding_bytes;
local_dir_header_ofs = cur_archive_file_ofs;
if (pZip->m_file_offset_alignment) {
MZ_ASSERT((cur_archive_file_ofs & (pZip->m_file_offset_alignment - 1)) == 0);
}
if (uncomp_size && level) {
method = MZ_DEFLATED;
}
MZ_CLEAR_OBJ(local_dir_header);
if (pState->m_zip64) {
if (uncomp_size >= MZ_UINT32_MAX || local_dir_header_ofs >= MZ_UINT32_MAX) {
pExtra_data = extra_data;
extra_size =
mz_zip_writer_create_zip64_extra_data(extra_data,
(uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL,
(uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL,
(local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL);
}
if (!mz_zip_writer_create_local_dir_header(pZip,
local_dir_header,
(mz_uint16)archive_name_size,
extra_size + user_extra_data_len,
0,
0,
0,
method,
gen_flags,
dos_time,
dos_date))
{
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, local_dir_header, sizeof(local_dir_header)) !=
sizeof(local_dir_header)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += sizeof(local_dir_header);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, archive_name_size) != archive_name_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += archive_name_size;
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, extra_data, extra_size) != extra_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += extra_size;
}
else {
if ((comp_size > MZ_UINT32_MAX) || (cur_archive_file_ofs > MZ_UINT32_MAX)) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
if (!mz_zip_writer_create_local_dir_header(pZip,
local_dir_header,
(mz_uint16)archive_name_size,
user_extra_data_len,
0,
0,
0,
method,
gen_flags,
dos_time,
dos_date))
{
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, local_dir_header, sizeof(local_dir_header)) !=
sizeof(local_dir_header)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += sizeof(local_dir_header);
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, archive_name_size) != archive_name_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += archive_name_size;
}
if (user_extra_data_len > 0) {
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, user_extra_data, user_extra_data_len) != user_extra_data_len) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_archive_file_ofs += user_extra_data_len;
}
if (uncomp_size) {
mz_uint64 uncomp_remaining = uncomp_size;
void* pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, MZ_ZIP_MAX_IO_BUF_SIZE);
if (!pRead_buf) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (!level) {
while (uncomp_remaining) {
mz_uint n = (mz_uint)MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, uncomp_remaining);
if ((MZ_FREAD(pRead_buf, 1, n, pSrc_file) != n) ||
(pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pRead_buf, n) != n)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
uncomp_crc32 = (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8*)pRead_buf, n);
uncomp_remaining -= n;
cur_archive_file_ofs += n;
}
comp_size = uncomp_size;
}
else {
mz_bool result = MZ_FALSE;
mz_zip_writer_add_state state;
tdefl_compressor* pComp = (tdefl_compressor*)pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor));
if (!pComp) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
state.m_pZip = pZip;
state.m_cur_archive_file_ofs = cur_archive_file_ofs;
state.m_comp_size = 0;
if (tdefl_init(pComp,
mz_zip_writer_add_put_buf_callback,
&state,
tdefl_create_comp_flags_from_zip_params(level, -15, MZ_DEFAULT_STRATEGY)) != TDEFL_STATUS_OKAY)
{
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR);
}
for (;;) {
size_t in_buf_size = (mz_uint32)MZ_MIN(uncomp_remaining, (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE);
tdefl_status status;
tdefl_flush flush = TDEFL_NO_FLUSH;
if (MZ_FREAD(pRead_buf, 1, in_buf_size, pSrc_file) != in_buf_size) {
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
break;
}
uncomp_crc32 = (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8*)pRead_buf, in_buf_size);
uncomp_remaining -= in_buf_size;
if (pZip->m_pNeeds_keepalive != NULL && pZip->m_pNeeds_keepalive(pZip->m_pIO_opaque)) {
flush = TDEFL_FULL_FLUSH;
}
status = tdefl_compress_buffer(pComp, pRead_buf, in_buf_size, uncomp_remaining ? flush : TDEFL_FINISH);
if (status == TDEFL_STATUS_DONE) {
result = MZ_TRUE;
break;
}
else if (status != TDEFL_STATUS_OKAY) {
mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED);
break;
}
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pComp);
if (!result) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
return MZ_FALSE;
}
comp_size = state.m_comp_size;
cur_archive_file_ofs = state.m_cur_archive_file_ofs;
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf);
}
{
mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64];
mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32;
MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID);
MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32);
if (pExtra_data == NULL) {
if (comp_size > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
MZ_WRITE_LE32(local_dir_footer + 8, comp_size);
MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size);
}
else {
MZ_WRITE_LE64(local_dir_footer + 8, comp_size);
MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size);
local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64;
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, local_dir_footer, local_dir_footer_size) !=
local_dir_footer_size) {
return MZ_FALSE;
}
cur_archive_file_ofs += local_dir_footer_size;
}
if (pExtra_data != NULL) {
extra_size = mz_zip_writer_create_zip64_extra_data(extra_data,
(uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL,
(uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL,
(local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL);
}
if (!mz_zip_writer_add_to_central_dir(pZip,
pArchive_name,
(mz_uint16)archive_name_size,
pExtra_data,
extra_size,
pComment,
comment_size,
uncomp_size,
comp_size,
uncomp_crc32,
method,
gen_flags,
dos_time,
dos_date,
local_dir_header_ofs,
ext_attributes,
user_extra_data_central,
user_extra_data_central_len))
{
return MZ_FALSE;
}
pZip->m_total_files++;
pZip->m_archive_size = cur_archive_file_ofs;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_add_file(mz_zip_archive* pZip,
const char* pArchive_name,
const char* pSrc_filename,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags)
{
MZ_FILE* pSrc_file = NULL;
mz_uint64 uncomp_size = 0;
MZ_TIME_T file_modified_time;
MZ_TIME_T* pFile_time = NULL;
mz_bool status;
memset(&file_modified_time, 0, sizeof(file_modified_time));
# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO)
pFile_time = &file_modified_time;
if (!mz_zip_get_file_modified_time(pSrc_filename, &file_modified_time)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_STAT_FAILED);
}
# endif
pSrc_file = MZ_FOPEN(pSrc_filename, "rb");
if (!pSrc_file) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED);
}
MZ_FSEEK64(pSrc_file, 0, SEEK_END);
uncomp_size = MZ_FTELL64(pSrc_file);
MZ_FSEEK64(pSrc_file, 0, SEEK_SET);
status = mz_zip_writer_add_cfile(pZip,
pArchive_name,
pSrc_file,
uncomp_size,
pFile_time,
pComment,
comment_size,
level_and_flags,
NULL,
0,
NULL,
0);
MZ_FCLOSE(pSrc_file);
return status;
}
# endif /* #ifndef MINIZ_NO_STDIO */
inline static mz_bool mz_zip_writer_update_zip64_extension_block(mz_zip_array* pNew_ext,
mz_zip_archive* pZip,
const mz_uint8* pExt,
uint32_t ext_len,
mz_uint64* pComp_size,
mz_uint64* pUncomp_size,
mz_uint64* pLocal_header_ofs,
mz_uint32* pDisk_start)
{
/* + 64 should be enough for any new zip64 data */
if (!mz_zip_array_reserve(pZip, pNew_ext, ext_len + 64, MZ_FALSE)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
mz_zip_array_resize(pZip, pNew_ext, 0, MZ_FALSE);
if ((pUncomp_size) || (pComp_size) || (pLocal_header_ofs) || (pDisk_start)) {
mz_uint8 new_ext_block[64];
mz_uint8* pDst = new_ext_block;
mz_write_le16(pDst, MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID);
mz_write_le16(pDst + sizeof(mz_uint16), 0);
pDst += sizeof(mz_uint16) * 2;
if (pUncomp_size) {
mz_write_le64(pDst, *pUncomp_size);
pDst += sizeof(mz_uint64);
}
if (pComp_size) {
mz_write_le64(pDst, *pComp_size);
pDst += sizeof(mz_uint64);
}
if (pLocal_header_ofs) {
mz_write_le64(pDst, *pLocal_header_ofs);
pDst += sizeof(mz_uint64);
}
if (pDisk_start) {
mz_write_le32(pDst, *pDisk_start);
pDst += sizeof(mz_uint32);
}
mz_write_le16(new_ext_block + sizeof(mz_uint16), (mz_uint16)((pDst - new_ext_block) - sizeof(mz_uint16) * 2));
if (!mz_zip_array_push_back(pZip, pNew_ext, new_ext_block, pDst - new_ext_block)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
}
if ((pExt) && (ext_len)) {
mz_uint32 extra_size_remaining = ext_len;
const mz_uint8* pExtra_data = pExt;
do {
mz_uint32 field_id, field_data_size, field_total_size;
if (extra_size_remaining < (sizeof(mz_uint16) * 2)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
field_id = MZ_READ_LE16(pExtra_data);
field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16));
field_total_size = field_data_size + sizeof(mz_uint16) * 2;
if (field_total_size > extra_size_remaining) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (field_id != MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) {
if (!mz_zip_array_push_back(pZip, pNew_ext, pExtra_data, field_total_size)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
}
pExtra_data += field_total_size;
extra_size_remaining -= field_total_size;
}
while (extra_size_remaining);
}
return MZ_TRUE;
}
/* TODO: This func is now pretty freakin complex due to zip64, split it up? */
inline mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive* pZip, mz_zip_archive* pSource_zip, mz_uint src_file_index)
{
mz_uint n, bit_flags, num_alignment_padding_bytes, src_central_dir_following_data_size;
mz_uint64 src_archive_bytes_remaining, local_dir_header_ofs;
mz_uint64 cur_src_file_ofs, cur_dst_file_ofs;
mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / sizeof(mz_uint32)];
mz_uint8* pLocal_header = (mz_uint8*)local_header_u32;
mz_uint8 new_central_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE];
size_t orig_central_dir_size;
mz_zip_internal_state* pState;
void* pBuf;
const mz_uint8* pSrc_central_header;
mz_zip_archive_file_stat src_file_stat;
mz_uint32 src_filename_len, src_comment_len, src_ext_len;
mz_uint32 local_header_filename_size, local_header_extra_len;
mz_uint64 local_header_comp_size, local_header_uncomp_size;
mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE;
/* Sanity checks */
if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pSource_zip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
/* Don't support copying files from zip64 archives to non-zip64, even though in some cases this is possible */
if ((pSource_zip->m_pState->m_zip64) && (!pZip->m_pState->m_zip64)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
/* Get pointer to the @library central dir header and crack it */
if (NULL == (pSrc_central_header = mz_zip_get_cdh(pSource_zip, src_file_index))) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (MZ_READ_LE32(pSrc_central_header + MZ_ZIP_CDH_SIG_OFS) != MZ_ZIP_CENTRAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
src_filename_len = MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_FILENAME_LEN_OFS);
src_comment_len = MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_COMMENT_LEN_OFS);
src_ext_len = MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS);
src_central_dir_following_data_size = src_filename_len + src_ext_len + src_comment_len;
/* TODO: We don't support central dir's >= MZ_UINT32_MAX bytes right now (+32 fudge factor in case we need to add more extra
* data) */
if ((pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_central_dir_following_data_size + 32) >= MZ_UINT32_MAX)
{
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
num_alignment_padding_bytes = mz_zip_writer_compute_padding_needed_for_file_alignment(pZip);
if (!pState->m_zip64) {
if (pZip->m_total_files == MZ_UINT16_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
else {
/* TODO: Our zip64 support still has some 32-bit limits that may not be worth fixing. */
if (pZip->m_total_files == MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
if (!mz_zip_file_stat_internal(pSource_zip, src_file_index, pSrc_central_header, &src_file_stat, NULL)) {
return MZ_FALSE;
}
cur_src_file_ofs = src_file_stat.m_local_header_ofs;
cur_dst_file_ofs = pZip->m_archive_size;
/* Read the @library archive's local dir header */
if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE)
{
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
cur_src_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE;
/* Compute the total size we need to copy (filename+extra data+compressed data) */
local_header_filename_size = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS);
local_header_extra_len = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS);
local_header_comp_size = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS);
local_header_uncomp_size = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS);
src_archive_bytes_remaining = local_header_filename_size + local_header_extra_len + src_file_stat.m_comp_size;
/* Try to find a zip64 extended information field */
if ((local_header_extra_len) && ((local_header_comp_size == MZ_UINT32_MAX) || (local_header_uncomp_size == MZ_UINT32_MAX))) {
mz_zip_array file_data_array;
const mz_uint8* pExtra_data;
mz_uint32 extra_size_remaining = local_header_extra_len;
mz_zip_array_init(&file_data_array, 1);
if (!mz_zip_array_resize(pZip, &file_data_array, local_header_extra_len, MZ_FALSE)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque,
src_file_stat.m_local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + local_header_filename_size,
file_data_array.m_p,
local_header_extra_len) != local_header_extra_len)
{
mz_zip_array_clear(pZip, &file_data_array);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
pExtra_data = (const mz_uint8*)file_data_array.m_p;
do {
mz_uint32 field_id, field_data_size, field_total_size;
if (extra_size_remaining < (sizeof(mz_uint16) * 2)) {
mz_zip_array_clear(pZip, &file_data_array);
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
field_id = MZ_READ_LE16(pExtra_data);
field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16));
field_total_size = field_data_size + sizeof(mz_uint16) * 2;
if (field_total_size > extra_size_remaining) {
mz_zip_array_clear(pZip, &file_data_array);
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) {
const mz_uint8* pSrc_field_data = pExtra_data + sizeof(mz_uint32);
if (field_data_size < sizeof(mz_uint64) * 2) {
mz_zip_array_clear(pZip, &file_data_array);
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
}
local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data);
local_header_comp_size = MZ_READ_LE64(pSrc_field_data + sizeof(mz_uint64)); /* may be 0 if there's a descriptor */
found_zip64_ext_data_in_ldir = MZ_TRUE;
break;
}
pExtra_data += field_total_size;
extra_size_remaining -= field_total_size;
}
while (extra_size_remaining);
mz_zip_array_clear(pZip, &file_data_array);
}
if (!pState->m_zip64) {
/* Try to detect if the new archive will most likely wind up too big and bail early (+(sizeof(mz_uint32) * 4) is for the
* optional descriptor which could be present, +64 is a fudge factor). */
/* We also check when the archive is finalized so this doesn't need to be perfect. */
mz_uint64 approx_new_archive_size = cur_dst_file_ofs + num_alignment_padding_bytes + MZ_ZIP_LOCAL_DIR_HEADER_SIZE +
src_archive_bytes_remaining + (sizeof(mz_uint32) * 4) + pState->m_central_dir.m_size +
MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_central_dir_following_data_size +
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 64;
if (approx_new_archive_size >= MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
}
/* Write dest archive padding */
if (!mz_zip_writer_write_zeros(pZip, cur_dst_file_ofs, num_alignment_padding_bytes)) {
return MZ_FALSE;
}
cur_dst_file_ofs += num_alignment_padding_bytes;
local_dir_header_ofs = cur_dst_file_ofs;
if (pZip->m_file_offset_alignment) {
MZ_ASSERT((local_dir_header_ofs & (pZip->m_file_offset_alignment - 1)) == 0);
}
/* The original zip's local header+ext block doesn't change, even with zip64, so we can just copy it over to the dest zip */
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) !=
MZ_ZIP_LOCAL_DIR_HEADER_SIZE) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_dst_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE;
/* Copy over the @library archive bytes to the dest archive, also ensure we have enough buf space to handle optional data
* descriptor */
if (NULL ==
(pBuf = pZip->m_pAlloc(pZip->m_pAlloc_opaque,
1,
(size_t)MZ_MAX(32U, MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, src_archive_bytes_remaining)))))
{
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
while (src_archive_bytes_remaining) {
n = (mz_uint)MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, src_archive_bytes_remaining);
if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, n) != n) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
cur_src_file_ofs += n;
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, n) != n) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_dst_file_ofs += n;
src_archive_bytes_remaining -= n;
}
/* Now deal with the optional data descriptor */
bit_flags = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS);
if (bit_flags & 8) {
/* Copy data descriptor */
if ((pSource_zip->m_pState->m_zip64) || (found_zip64_ext_data_in_ldir)) {
/* src is zip64, dest must be zip64 */
/* name uint32_t's */
/* id 1 (optional in zip64?) */
/* crc 1 */
/* comp_size 2 */
/* uncomp_size 2 */
if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, (sizeof(mz_uint32) * 6)) !=
(sizeof(mz_uint32) * 6)) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
n = sizeof(mz_uint32) * ((MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID) ? 6 : 5);
}
else {
/* src is NOT zip64 */
mz_bool has_id;
if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, sizeof(mz_uint32) * 4) !=
sizeof(mz_uint32) * 4) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
}
has_id = (MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID);
if (pZip->m_pState->m_zip64) {
/* dest is zip64, so upgrade the data descriptor */
const mz_uint32* pSrc_descriptor = (const mz_uint32*)((const mz_uint8*)pBuf + (has_id ? sizeof(mz_uint32) : 0));
const mz_uint32 src_crc32 = pSrc_descriptor[0];
const mz_uint64 src_comp_size = pSrc_descriptor[1];
const mz_uint64 src_uncomp_size = pSrc_descriptor[2];
mz_write_le32((mz_uint8*)pBuf, MZ_ZIP_DATA_DESCRIPTOR_ID);
mz_write_le32((mz_uint8*)pBuf + sizeof(mz_uint32) * 1, src_crc32);
mz_write_le64((mz_uint8*)pBuf + sizeof(mz_uint32) * 2, src_comp_size);
mz_write_le64((mz_uint8*)pBuf + sizeof(mz_uint32) * 4, src_uncomp_size);
n = sizeof(mz_uint32) * 6;
}
else {
/* dest is NOT zip64, just copy it as-is */
n = sizeof(mz_uint32) * (has_id ? 4 : 3);
}
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, n) != n) {
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
cur_src_file_ofs += n;
cur_dst_file_ofs += n;
}
pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf);
/* Finally, add the new central dir header */
orig_central_dir_size = pState->m_central_dir.m_size;
memcpy(new_central_header, pSrc_central_header, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE);
if (pState->m_zip64) {
/* This is the painful part: We need to write a new central dir header + ext block with updated zip64 fields, and ensure the
* old fields (if any) are not included. */
const mz_uint8* pSrc_ext = pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_filename_len;
mz_zip_array new_ext_block;
mz_zip_array_init(&new_ext_block, sizeof(mz_uint8));
MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, MZ_UINT32_MAX);
MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, MZ_UINT32_MAX);
MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, MZ_UINT32_MAX);
if (!mz_zip_writer_update_zip64_extension_block(&new_ext_block,
pZip,
pSrc_ext,
src_ext_len,
&src_file_stat.m_comp_size,
&src_file_stat.m_uncomp_size,
&local_dir_header_ofs,
NULL))
{
mz_zip_array_clear(pZip, &new_ext_block);
return MZ_FALSE;
}
MZ_WRITE_LE16(new_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS, new_ext_block.m_size);
if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, new_central_header, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) {
mz_zip_array_clear(pZip, &new_ext_block);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (!mz_zip_array_push_back(pZip,
&pState->m_central_dir,
pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE,
src_filename_len)) {
mz_zip_array_clear(pZip, &new_ext_block);
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, new_ext_block.m_p, new_ext_block.m_size)) {
mz_zip_array_clear(pZip, &new_ext_block);
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (!mz_zip_array_push_back(pZip,
&pState->m_central_dir,
pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_filename_len + src_ext_len,
src_comment_len))
{
mz_zip_array_clear(pZip, &new_ext_block);
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
mz_zip_array_clear(pZip, &new_ext_block);
}
else {
/* sanity checks */
if (cur_dst_file_ofs > MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
if (local_dir_header_ofs >= MZ_UINT32_MAX) {
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
}
MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, local_dir_header_ofs);
if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, new_central_header, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) {
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
if (!mz_zip_array_push_back(pZip,
&pState->m_central_dir,
pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE,
src_central_dir_following_data_size))
{
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
}
/* This shouldn't trigger unless we screwed up during the initial sanity checks */
if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) {
/* TODO: Support central dirs >= 32-bits in size */
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE);
}
n = (mz_uint32)orig_central_dir_size;
if (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, &n, 1)) {
mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, MZ_FALSE);
return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED);
}
pZip->m_total_files++;
pZip->m_archive_size = cur_dst_file_ofs;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_finalize_archive(mz_zip_archive* pZip)
{
mz_zip_internal_state* pState;
mz_uint64 central_dir_ofs, central_dir_size;
mz_uint8 hdr[256];
if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
pState = pZip->m_pState;
if (pState->m_zip64) {
if ((pZip->m_total_files > MZ_UINT32_MAX) || (pState->m_central_dir.m_size >= MZ_UINT32_MAX)) {
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
else {
if ((pZip->m_total_files > MZ_UINT16_MAX) ||
((pZip->m_archive_size + pState->m_central_dir.m_size + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX))
{
return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES);
}
}
central_dir_ofs = 0;
central_dir_size = 0;
if (pZip->m_total_files) {
/* Write central directory */
central_dir_ofs = pZip->m_archive_size;
central_dir_size = pState->m_central_dir.m_size;
pZip->m_central_directory_file_ofs = central_dir_ofs;
if (pZip->m_pWrite(pZip->m_pIO_opaque, central_dir_ofs, pState->m_central_dir.m_p, (size_t)central_dir_size) !=
central_dir_size) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
pZip->m_archive_size += central_dir_size;
}
if (pState->m_zip64) {
/* Write zip64 end of central directory header */
mz_uint64 rel_ofs_to_zip64_ecdr = pZip->m_archive_size;
MZ_CLEAR_OBJ(hdr);
MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDH_SIG_OFS, MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS,
MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - sizeof(mz_uint32) - sizeof(mz_uint64));
MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS, 0x031E); /* TODO: always Unix */
MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS, 0x002D);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, pZip->m_total_files);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS, pZip->m_total_files);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_SIZE_OFS, central_dir_size);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_OFS_OFS, central_dir_ofs);
if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) !=
MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)
{
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE;
/* Write zip64 end of central directory locator */
MZ_CLEAR_OBJ(hdr);
MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_SIG_OFS, MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG);
MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS, rel_ofs_to_zip64_ecdr);
MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS, 1);
if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) !=
MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE)
{
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE;
}
/* Write end of central directory record */
MZ_CLEAR_OBJ(hdr);
MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_SIG_OFS, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG);
MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files));
MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS, MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files));
MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_SIZE_OFS, MZ_MIN(MZ_UINT32_MAX, central_dir_size));
MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_OFS_OFS, MZ_MIN(MZ_UINT32_MAX, central_dir_ofs));
if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) !=
MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE)
{
return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED);
}
# ifndef MINIZ_NO_STDIO
if ((pState->m_pFile) && (MZ_FFLUSH(pState->m_pFile) == EOF)) {
return mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED);
}
# endif /* #ifndef MINIZ_NO_STDIO */
pZip->m_archive_size += MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE;
pZip->m_zip_mode = MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive* pZip, void** ppBuf, size_t* pSize)
{
if ((!ppBuf) || (!pSize)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
*ppBuf = NULL;
*pSize = 0;
if ((!pZip) || (!pZip->m_pState)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (pZip->m_pWrite != mz_zip_heap_write_func) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
if (!mz_zip_writer_finalize_archive(pZip)) {
return MZ_FALSE;
}
*ppBuf = pZip->m_pState->m_pMem;
*pSize = pZip->m_pState->m_mem_size;
pZip->m_pState->m_pMem = NULL;
pZip->m_pState->m_mem_size = pZip->m_pState->m_mem_capacity = 0;
return MZ_TRUE;
}
inline mz_bool mz_zip_writer_end(mz_zip_archive* pZip)
{
return mz_zip_writer_end_internal(pZip, MZ_TRUE);
}
# ifndef MINIZ_NO_STDIO
inline mz_bool mz_zip_add_mem_to_archive_file_in_place(const char* pZip_filename,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags)
{
return mz_zip_add_mem_to_archive_file_in_place_v2(pZip_filename,
pArchive_name,
pBuf,
buf_size,
pComment,
comment_size,
level_and_flags,
NULL);
}
inline mz_bool mz_zip_add_mem_to_archive_file_in_place_v2(const char* pZip_filename,
const char* pArchive_name,
const void* pBuf,
size_t buf_size,
const void* pComment,
mz_uint16 comment_size,
mz_uint level_and_flags,
mz_zip_error* pErr)
{
mz_bool status, created_new_archive = MZ_FALSE;
mz_zip_archive zip_archive;
struct MZ_FILE_STAT_STRUCT file_stat;
mz_zip_error actual_err = MZ_ZIP_NO_ERROR;
mz_zip_zero_struct(&zip_archive);
if ((int)level_and_flags < 0) {
level_and_flags = MZ_DEFAULT_LEVEL;
}
if ((!pZip_filename) || (!pArchive_name) || ((buf_size) && (!pBuf)) || ((comment_size) && (!pComment)) ||
((level_and_flags & 0xF) > MZ_UBER_COMPRESSION))
{
if (pErr) {
*pErr = MZ_ZIP_INVALID_PARAMETER;
}
return MZ_FALSE;
}
if (!mz_zip_writer_validate_archive_name(pArchive_name)) {
if (pErr) {
*pErr = MZ_ZIP_INVALID_FILENAME;
}
return MZ_FALSE;
}
/* Important: The regular non-64 bit version of stat() can fail here if the file is very large, which could cause the archive to
* be overwritten. */
/* So be sure to compile with _LARGEFILE64_SOURCE 1 */
if (MZ_FILE_STAT(pZip_filename, &file_stat) != 0) {
/* Create a new archive. */
if (!mz_zip_writer_init_file_v2(&zip_archive, pZip_filename, 0, level_and_flags)) {
if (pErr) {
*pErr = zip_archive.m_last_error;
}
return MZ_FALSE;
}
created_new_archive = MZ_TRUE;
}
else {
/* Append to an existing archive. */
if (!mz_zip_reader_init_file_v2(&zip_archive,
pZip_filename,
level_and_flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY,
0,
0)) {
if (pErr) {
*pErr = zip_archive.m_last_error;
}
return MZ_FALSE;
}
if (!mz_zip_writer_init_from_reader_v2(&zip_archive, pZip_filename, level_and_flags)) {
if (pErr) {
*pErr = zip_archive.m_last_error;
}
mz_zip_reader_end_internal(&zip_archive, MZ_FALSE);
return MZ_FALSE;
}
}
status = mz_zip_writer_add_mem_ex(&zip_archive, pArchive_name, pBuf, buf_size, pComment, comment_size, level_and_flags, 0, 0);
actual_err = zip_archive.m_last_error;
/* Always finalize, even if adding failed for some reason, so we have a valid central directory. (This may not always succeed,
* but we can try.) */
if (!mz_zip_writer_finalize_archive(&zip_archive)) {
if (!actual_err) {
actual_err = zip_archive.m_last_error;
}
status = MZ_FALSE;
}
if (!mz_zip_writer_end_internal(&zip_archive, status)) {
if (!actual_err) {
actual_err = zip_archive.m_last_error;
}
status = MZ_FALSE;
}
if ((!status) && (created_new_archive)) {
/* It's a new archive and something went wrong, so just delete it. */
int ignoredStatus = MZ_DELETE_FILE(pZip_filename);
(void)ignoredStatus;
}
if (pErr) {
*pErr = actual_err;
}
return status;
}
inline void* mz_zip_extract_archive_file_to_heap_v2(const char* pZip_filename,
const char* pArchive_name,
const char* pComment,
size_t* pSize,
mz_uint flags,
mz_zip_error* pErr)
{
mz_uint32 file_index;
mz_zip_archive zip_archive;
void* p = NULL;
if (pSize) {
*pSize = 0;
}
if ((!pZip_filename) || (!pArchive_name)) {
if (pErr) {
*pErr = MZ_ZIP_INVALID_PARAMETER;
}
return NULL;
}
mz_zip_zero_struct(&zip_archive);
if (!mz_zip_reader_init_file_v2(&zip_archive, pZip_filename, flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, 0, 0)) {
if (pErr) {
*pErr = zip_archive.m_last_error;
}
return NULL;
}
if (mz_zip_reader_locate_file_v2(&zip_archive, pArchive_name, pComment, flags, &file_index)) {
p = mz_zip_reader_extract_to_heap(&zip_archive, file_index, pSize, flags);
}
mz_zip_reader_end_internal(&zip_archive, p != NULL);
if (pErr) {
*pErr = zip_archive.m_last_error;
}
return p;
}
inline void* mz_zip_extract_archive_file_to_heap(const char* pZip_filename, const char* pArchive_name, size_t* pSize, mz_uint flags)
{
return mz_zip_extract_archive_file_to_heap_v2(pZip_filename, pArchive_name, NULL, pSize, flags, NULL);
}
# endif /* #ifndef MINIZ_NO_STDIO */
# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */
/* ------------------- Misc utils */
inline mz_zip_mode mz_zip_get_mode(mz_zip_archive* pZip)
{
return pZip ? pZip->m_zip_mode : MZ_ZIP_MODE_INVALID;
}
inline mz_zip_type mz_zip_get_type(mz_zip_archive* pZip)
{
return pZip ? pZip->m_zip_type : MZ_ZIP_TYPE_INVALID;
}
inline mz_zip_error mz_zip_set_last_error(mz_zip_archive* pZip, mz_zip_error err_num)
{
mz_zip_error prev_err;
if (!pZip) {
return MZ_ZIP_INVALID_PARAMETER;
}
prev_err = pZip->m_last_error;
pZip->m_last_error = err_num;
return prev_err;
}
inline mz_zip_error mz_zip_peek_last_error(mz_zip_archive* pZip)
{
if (!pZip) {
return MZ_ZIP_INVALID_PARAMETER;
}
return pZip->m_last_error;
}
inline mz_zip_error mz_zip_clear_last_error(mz_zip_archive* pZip)
{
return mz_zip_set_last_error(pZip, MZ_ZIP_NO_ERROR);
}
inline mz_zip_error mz_zip_get_last_error(mz_zip_archive* pZip)
{
mz_zip_error prev_err;
if (!pZip) {
return MZ_ZIP_INVALID_PARAMETER;
}
prev_err = pZip->m_last_error;
pZip->m_last_error = MZ_ZIP_NO_ERROR;
return prev_err;
}
inline const char* mz_zip_get_error_string(mz_zip_error mz_err)
{
switch (mz_err) {
case MZ_ZIP_NO_ERROR:
return "no error";
case MZ_ZIP_UNDEFINED_ERROR:
return "undefined error";
case MZ_ZIP_TOO_MANY_FILES:
return "too many files";
case MZ_ZIP_FILE_TOO_LARGE:
return "file too large";
case MZ_ZIP_UNSUPPORTED_METHOD:
return "unsupported method";
case MZ_ZIP_UNSUPPORTED_ENCRYPTION:
return "unsupported encryption";
case MZ_ZIP_UNSUPPORTED_FEATURE:
return "unsupported feature";
case MZ_ZIP_FAILED_FINDING_CENTRAL_DIR:
return "failed finding central directory";
case MZ_ZIP_NOT_AN_ARCHIVE:
return "not a ZIP archive";
case MZ_ZIP_INVALID_HEADER_OR_CORRUPTED:
return "invalid header or archive is corrupted";
case MZ_ZIP_UNSUPPORTED_MULTIDISK:
return "unsupported multidisk archive";
case MZ_ZIP_DECOMPRESSION_FAILED:
return "decompression failed or archive is corrupted";
case MZ_ZIP_COMPRESSION_FAILED:
return "compression failed";
case MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE:
return "unexpected decompressed size";
case MZ_ZIP_CRC_CHECK_FAILED:
return "CRC-32 check failed";
case MZ_ZIP_UNSUPPORTED_CDIR_SIZE:
return "unsupported central directory size";
case MZ_ZIP_ALLOC_FAILED:
return "allocation failed";
case MZ_ZIP_FILE_OPEN_FAILED:
return "file open failed";
case MZ_ZIP_FILE_CREATE_FAILED:
return "file create failed";
case MZ_ZIP_FILE_WRITE_FAILED:
return "file write failed";
case MZ_ZIP_FILE_READ_FAILED:
return "file read failed";
case MZ_ZIP_FILE_CLOSE_FAILED:
return "file close failed";
case MZ_ZIP_FILE_SEEK_FAILED:
return "file seek failed";
case MZ_ZIP_FILE_STAT_FAILED:
return "file stat failed";
case MZ_ZIP_INVALID_PARAMETER:
return "invalid parameter";
case MZ_ZIP_INVALID_FILENAME:
return "invalid filename";
case MZ_ZIP_BUF_TOO_SMALL:
return "buffer too small";
case MZ_ZIP_INTERNAL_ERROR:
return "internal error";
case MZ_ZIP_FILE_NOT_FOUND:
return "file not found";
case MZ_ZIP_ARCHIVE_TOO_LARGE:
return "archive is too large";
case MZ_ZIP_VALIDATION_FAILED:
return "validation failed";
case MZ_ZIP_WRITE_CALLBACK_FAILED:
return "write calledback failed";
default:
break;
}
return "unknown error";
}
/* Note: Just because the archive is not zip64 doesn't necessarily mean it doesn't have Zip64 extended information extra field,
* argh. */
inline mz_bool mz_zip_is_zip64(mz_zip_archive* pZip)
{
if ((!pZip) || (!pZip->m_pState)) {
return MZ_FALSE;
}
return pZip->m_pState->m_zip64;
}
inline size_t mz_zip_get_central_dir_size(mz_zip_archive* pZip)
{
if ((!pZip) || (!pZip->m_pState)) {
return 0;
}
return pZip->m_pState->m_central_dir.m_size;
}
inline mz_uint mz_zip_reader_get_num_files(mz_zip_archive* pZip)
{
return pZip ? pZip->m_total_files : 0;
}
inline mz_uint64 mz_zip_get_archive_size(mz_zip_archive* pZip)
{
if (!pZip) {
return 0;
}
return pZip->m_archive_size;
}
inline mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive* pZip)
{
if ((!pZip) || (!pZip->m_pState)) {
return 0;
}
return pZip->m_pState->m_file_archive_start_ofs;
}
inline MZ_FILE* mz_zip_get_cfile(mz_zip_archive* pZip)
{
if ((!pZip) || (!pZip->m_pState)) {
return 0;
}
return pZip->m_pState->m_pFile;
}
inline size_t mz_zip_read_archive_data(mz_zip_archive* pZip, mz_uint64 file_ofs, void* pBuf, size_t n)
{
if ((!pZip) || (!pZip->m_pState) || (!pBuf) || (!pZip->m_pRead)) {
return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
}
return pZip->m_pRead(pZip->m_pIO_opaque, file_ofs, pBuf, n);
}
inline mz_uint mz_zip_reader_get_filename(mz_zip_archive* pZip, mz_uint file_index, char* pFilename, mz_uint filename_buf_size)
{
mz_uint n;
const mz_uint8* p = mz_zip_get_cdh(pZip, file_index);
if (!p) {
if (filename_buf_size) {
pFilename[0] = '\0';
}
mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER);
return 0;
}
n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS);
if (filename_buf_size) {
n = MZ_MIN(n, filename_buf_size - 1);
memcpy(pFilename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n);
pFilename[n] = '\0';
}
return n + 1;
}
inline mz_bool mz_zip_reader_file_stat(mz_zip_archive* pZip, mz_uint file_index, mz_zip_archive_file_stat* pStat)
{
return mz_zip_file_stat_internal(pZip, file_index, mz_zip_get_cdh(pZip, file_index), pStat, NULL);
}
inline mz_bool mz_zip_end(mz_zip_archive* pZip)
{
if (!pZip) {
return MZ_FALSE;
}
if (pZip->m_zip_mode == MZ_ZIP_MODE_READING) {
return mz_zip_reader_end(pZip);
}
# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
else if ((pZip->m_zip_mode == MZ_ZIP_MODE_WRITING) || (pZip->m_zip_mode == MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED)) {
return mz_zip_writer_end(pZip);
}
# endif
return MZ_FALSE;
}
# ifdef __cplusplus
}
# endif
#endif /*#ifndef MINIZ_NO_ARCHIVE_APIS*/
} // namespace
namespace Zippy
{
/**
* @brief The ZipRuntimeError class is a custom exception class derived from the std::runtime_error class.
* @details In case of an error in the Zippy library, an ZipRuntimeError object will be thrown, with a message
* describing the details of the error.
*/
class ZipRuntimeError : public std::runtime_error
{
public:
/**
* @brief Constructor.
* @param err A string with a description of the error.
*/
inline explicit ZipRuntimeError(const std::string& err) : runtime_error(err) {}
/**
* @brief Destructor.
*/
inline ~ZipRuntimeError() override = default;
};
/**
* @brief
*/
class ZipLogicError : public std::logic_error
{
public:
/**
* @brief
* @param err
*/
inline explicit ZipLogicError(const std::string& err) : logic_error(err) {}
/**
* @brief
*/
inline ~ZipLogicError() override = default;
};
} // namespace Zippy
namespace Zippy::Impl
{
/**
* @brief Generates a random filename, which is used to generate a temporary archive when modifying and saving
* archive files.
* @param length The length of the filename to create.
* @return Returns the generated filenamen, appended with '.tmp'.
*/
inline std::string GenerateRandomName(int length)
{
std::string letters = "abcdefghijklmnopqrstuvwxyz0123456789";
std::random_device rand_dev;
std::mt19937 generator(rand_dev());
std::uniform_int_distribution<int> distr(0, letters.size() - 1);
std::string result;
for (int i = 0; i < length; ++i) {
result += letters[distr(generator)];
}
return result + ".tmp";
}
} // namespace Zippy::Impl
namespace Zippy
{
class ZipArchive;
class ZipEntry;
// ===== Alias Declarations
/**
* @brief The ZipEntryInfo entity is an alias of the mz_zip_archive_file_stat from the miniz library.
* @details The ZipEntryInfo/mz_zip_archive_file_stat struct holds various meta data related to a particular
* entry (or item) in a zip archive, such as: comments, file size, date stamp etc.
* @note A new ZipEntryInfo should not be created manually.
*/
using ZipEntryInfo = mz_zip_archive_file_stat;
/**
* @brief The ZipEntryData entity is an alias for a std::vector of std::bytes.
* @details This is used as a generic container of file data of any kind, both character strings and binary.
* A vector of char or an array of char can also be used, but a vector of bytes makes it clearer that it can
* also be used for non-text data.
*/
using ZipEntryData = std::vector<unsigned char>;
/**
* @brief The ZipEntryMetaData is essentially a wrapper around the ZipEntryInfo scruct, which is an alias for a
* miniz struct.
*/
struct ZipEntryMetaData
{
/**
* @brief Constructor.
* @param info A reference to a ZipEntryInfo object.
*/
explicit ZipEntryMetaData(const ZipEntryInfo& info)
: Index(info.m_file_index),
CompressedSize(info.m_comp_size),
UncompressedSize(info.m_uncomp_size),
IsDirectory(info.m_is_directory),
IsEncrypted(info.m_is_encrypted),
IsSupported(info.m_is_supported),
Filename(info.m_filename),
Comment(info.m_comment),
Time(info.m_time)
{}
uint32_t Index; /**< */
uint64_t CompressedSize; /**< */
uint64_t UncompressedSize; /**< */
bool IsDirectory; /**< */
bool IsEncrypted; /**< */
bool IsSupported; /**< */
std::string Filename; /**< */
std::string Comment; /**< */
const time_t Time; /**< */
};
namespace Impl
{
/**
* @brief The Impl::ZipEntry class implements the functionality required for manipulating entries in a zip archive.
* @details This is the implementation class. The ZipEntry class in the Zippy namespace implements the public interface.
* The reason for having a separate implementation class, is that it enables easy copy and move operations of
* ZipEntry objects, without duplicating the underlying implementation objects.
*/
class ZipEntry
{
friend class Zippy::ZipArchive;
friend class Zippy::ZipEntry;
public:
// ===== Constructors, Destructor and Operators
/**
* @brief Constructor. Creates a new ZipEntry with the given ZipEntryInfo parameter. This is only used for creating
* a ZipEntry for an entry already present in the ZipArchive, when opening an existing archive.
* @param info A reference to a ZipEntryInfo object with the entry info.
*/
explicit ZipEntry(const ZipEntryInfo& info) : m_EntryInfo(info)
{
// ===== Call GetNewIndex to update the index counter with the getValue in the ZipEntryInfo object.
GetNewIndex(info.m_file_index); // The return getValue is deliberately not used.
}
/**
* @brief Constructor. Creates a new ZipEntry with the given name and binary data. This should only be used for creating
* new entries, not already present in the ZipArchive
* @param name The name of the new entry to add to the zip archive.
* @param data A reference to a ZipEntryData object with the file data to add.
*/
ZipEntry(const std::string& name, const ZipEntryData& data)
{
// ===== Create new ZipEntryData object
m_EntryInfo = CreateInfo(name);
// ===== Assign the input data to the m_EntryData variable and set the m_IsModified flag to true.
m_EntryData = data;
m_IsModified = true;
}
/**
* @brief Constructor. Creates a new ZipEntry with the given name and string data. This should only be used for creating
* new entries, not already present in the ZipArchive
* @param name The name of the new entry to add to the zip archive.
* @param data A string with the text data to add to the zip archive.
*/
ZipEntry(const std::string& name, const std::string& data)
{
// ===== Create new ZipEntryData object
m_EntryInfo = CreateInfo(name);
// ===== Copy the string data to the m_EntryData member and set the m_IsModified flag to true.
m_EntryData.reserve(data.size());
for (const auto& ch : data) {
m_EntryData.emplace_back(ch);
}
m_IsModified = true;
}
/**
* @brief Copy Constructor (Deleted)
* @param other The object to copy.
* @note The copy constructor has been deleted, because it is not obvious what should happen to the
* underlying file when copying the entry object.
*/
ZipEntry(const ZipEntry& other) = delete;
/**
* @brief Move Constructor.
* @param other The object to be moved.
*/
ZipEntry(ZipEntry&& other) noexcept = default;
/**
* @brief Destructor.
*/
virtual ~ZipEntry() = default;
/**
* @brief Copy Assignment Operator (deleted)
* @param other The object to be copied.
* @return A reference to the copied-to object.
* @note The copy assignment operator has been deleted, because it is not obvious what should happen to the
* underlying file when copying the entry object.
*/
ZipEntry& operator=(const ZipEntry& other) = delete;
/**
* @brief Move Assignment Operator.
* @param other The object to be moved.
* @return A reference to the moved-to object.
*/
ZipEntry& operator=(ZipEntry&& other) noexcept = default;
// ===== Data Access and Manipulation
/**
* @brief Get data from entry.
* @return Returns a ZipEntryData (alias for std::vector<std::byte>) object with the fil data.
*/
ZipEntryData GetData() const
{
return m_EntryData;
}
/**
* @brief Get entry data as a std::string.
* @return Returns a std::string with the file data.
*/
std::string GetDataAsString() const
{
std::string result;
for (const auto& ch : m_EntryData) {
result += static_cast<char>(ch);
} // TODO: Should this use reinterpret_cast instead?
return result;
}
/**
* @brief Set the data for the entry.
* @param data A std::string with the file data.
*/
void SetData(const std::string& data)
{
ZipEntryData result;
for (const auto& ch : data) {
result.push_back(ch);
}
m_EntryData = result;
m_IsModified = true;
}
/**
* @brief Set the data for the entry.
* @param data A ZipEntryData (alias for std::vector<std::byte>) object with the file data.
*/
void SetData(const ZipEntryData& data)
{
m_EntryData = data;
m_IsModified = true;
}
/**
* @brief Get the name of the entry.
* @return Returns a std::string with the entry name.
*/
std::string GetName() const
{
return m_EntryInfo.m_filename;
}
/**
* @brief Set the name of the entry.
* @param name A std::string with the new name of the entry.
*/
void SetName(const std::string& name)
{
#if _MSC_VER // On MSVC, use the safe version of strcpy
strcpy_s(m_EntryInfo.m_filename, sizeof m_EntryInfo.m_filename, name.c_str());
#else // Otherwise, use the unsafe version as fallback :(
strncpy(m_EntryInfo.m_filename, name.c_str(), sizeof m_EntryInfo.m_filename);
#endif
}
// ===== Metadata Access
/**
* @brief Get the entry's index in the zip archive.
* @return Returns a uint32_t with the entry index.
*/
uint32_t Index() const
{
return m_EntryInfo.m_file_index;
}
/**
* @brief Get the uncompressed size of the entry (in bytes)
* @return A uint64_t with the uncompressed size.
*/
uint64_t CompressedSize() const
{
return m_EntryInfo.m_comp_size;
}
/**
* @brief Get the compressed size of the entry (in bytes)
* @return A uint64_t with the compressed size.
*/
uint64_t UncompressedSize() const
{
return m_EntryInfo.m_uncomp_size;
}
/**
* @brief Is the zip entry a directory?
* @return Returns true if the entry is a directory; otherwise false.
*/
bool IsDirectory() const
{
return m_EntryInfo.m_is_directory;
}
/**
* @brief
* @return Returns true if the entry is encrypted; otherwise false.
*/
bool IsEncrypted() const
{
return m_EntryInfo.m_is_encrypted;
}
/**
* @brief Is the zip entry encryption supported?
* @return Returns true if the entry encryption (if any) is supported by the library; otherwise false.
*/
bool IsSupported() const
{
return m_EntryInfo.m_is_supported;
}
/**
* @brief Get the zip entry comments.
* @return Returns a std::string with the comments.
*/
std::string Comment() const
{
return m_EntryInfo.m_comment;
}
/**
* @brief Get the zip entry time stamp.
* @return Returns a time_t object with the time stamp.
*/
const time_t& Time() const
{
return m_EntryInfo.m_time;
}
private:
ZipEntryInfo m_EntryInfo = ZipEntryInfo(); /**< The zip entry metadata. */
ZipEntryData m_EntryData = ZipEntryData(); /**< The zip entry data. */
bool m_IsModified = false; /**< Boolean flag indicating if the file has been modified since opening. */
/**
* @brief Has the zip entry been modified?
* @return Returns true if the entry is has been modified; otherwise false.
*/
bool IsModified() const
{
return m_IsModified;
}
/**
* @brief Generate a new file index.
* @details The file index in existing zip archives may not be incrementing trivially. When opening existing
* zip archives, this function is simply used to update the index. When adding new entries to an existing
* archive, this function is guaranteed to provide a unique index.
* @return Returns a uint32_t (32 bit unsigned int) with the new index.
*/
static uint32_t GetNewIndex(uint32_t latestIndex = 0)
{
// ===== Set up a static index counter (set to zero the first time the function is executed)
static uint32_t index { 0 };
// ===== If the input value is larger than the current index getValue, set the index equal to the input.
if (latestIndex > index) {
index = latestIndex;
return index;
}
// ===== Increment the index and return the getValue.
return ++index;
}
/**
* @brief Create a new ZipEntryInfo structure.
* @details This function will create a new ZipEntryInfo structure, based on the input file name. The
* structure values will mostly be dummy values, except for the file index, the time stamp, the file name
* and the is_directory flag.
* @param name The file name for the new ZipEntryInfo.
* @return The newly created ZipEntryInfo structure is returned
*/
static ZipEntryInfo CreateInfo(const std::string& name)
{
ZipEntryInfo info;
info.m_file_index = GetNewIndex(0);
info.m_central_dir_ofs = 0;
info.m_version_made_by = 0;
info.m_version_needed = 0;
info.m_bit_flag = 0;
info.m_method = 0;
info.m_time = time(nullptr);
info.m_crc32 = 0;
info.m_comp_size = 0;
info.m_uncomp_size = 0;
info.m_internal_attr = 0;
info.m_external_attr = 0;
info.m_local_header_ofs = 0;
info.m_comment_size = 0;
info.m_is_directory = (name.back() == '/');
info.m_is_encrypted = false;
info.m_is_supported = true;
#if _MSC_VER // On MSVC, use the safe version of strcpy
strcpy_s(info.m_filename, sizeof info.m_filename, name.c_str());
strcpy_s(info.m_comment, sizeof info.m_comment, "");
#else // Otherwise, use the unsafe version as fallback :(
strncpy(info.m_filename, name.c_str(), sizeof info.m_filename);
strncpy(info.m_comment, "", sizeof info.m_comment);
#endif
return info;
}
};
} // namespace Impl
/**
* @brief The ZipEntry class implements the interface required for manipulating entries in a zip archive.
* @details This is the interface class. The ZipEntry class in the Zippy::Impl namespace implements the private implementation.
* The reason for having a separate implementation class, is that it enables easy copy and move operations of
* ZipEntry objects, without duplicating the underlying implementation objects.
*/
class ZipEntry
{
friend class ZipArchive;
public:
// ===== Constructors, Destructor and Operators
/**
* @brief Constructor. Creates a new ZipEntry.
* @param entry A raw (non-owning) pointer to the existing Impl::ZipEntry object.
* @todo Can this be made private?
*/
explicit ZipEntry(Impl::ZipEntry* entry) : m_ZipEntry(entry) {}
/**
* @brief Copy Constructor.
* @param other The object to be copied.
*/
ZipEntry(const ZipEntry& other) = default;
/**
* @brief Move Constructor.
* @param other The object to be moved.
*/
ZipEntry(ZipEntry&& other) noexcept = default;
/**
* @brief Destructor
*/
virtual ~ZipEntry() = default;
/**
* @brief Copy Assignment Operator.
* @param other The object to be copied.
* @return A reference to the copied-to object.
*/
ZipEntry& operator=(const ZipEntry& other) = default;
/**
* @brief Move Assignment Operator.
* @param other The object to be moved.
* @return A reference to the moved-to object.
*/
ZipEntry& operator=(ZipEntry&& other) noexcept = default;
// ===== Data Access and Manipulation
/**
* @brief Get data from entry.
* @return Returns a ZipEntryData (alias for std::vector<std::byte>) object with the file data.
*/
ZipEntryData GetData() const
{
return m_ZipEntry->GetData();
}
/**
* @brief Get entry data as a std::string.
* @return Returns a std::string with the file data.
*/
std::string GetDataAsString() const
{
return m_ZipEntry->GetDataAsString();
}
/**
* @brief Set the data for the entry.
* @param data A std::string with the file data.
*/
void SetData(const std::string& data)
{
m_ZipEntry->SetData(data);
}
/**
* @brief Set the data for the entry.
* @param data A ZipEntryData (alias for std::vector<std::byte>) object with the file data.
*/
void SetData(const ZipEntryData& data)
{
m_ZipEntry->SetData(data);
}
// ===== Metadata Access
/**
* @brief Get the entry's index in the zip archive.
* @return Returns a uint32_t with the entry index.
*/
uint32_t Index() const
{
return m_ZipEntry->Index();
}
/**
* @brief Get the uncompressed size of the entry (in bytes)
* @return A uint64_t with the uncompressed size.
*/
uint64_t CompressedSize() const
{
return m_ZipEntry->CompressedSize();
}
/**
* @brief Get the compressed size of the entry (in bytes)
* @return A uint64_t with the compressed size.
*/
uint64_t UncompressedSize() const
{
return m_ZipEntry->UncompressedSize();
}
/**
* @brief Is the entry a directory?
* @return Returns true if the entry is a directory; otherwise false.
*/
bool IsDirectory() const
{
return m_ZipEntry->IsDirectory();
}
/**
* @brief Is the zip entry supported?
* @return Returns true if the entry is encrypted; otherwise false.
*/
bool IsEncrypted() const
{
return m_ZipEntry->IsEncrypted();
}
/**
* @brief Is the zip entry encryption supported?
* @return Returns true if the entry encryption (if any) is supported; otherwise false.
*/
bool IsSupported() const
{
return m_ZipEntry->IsSupported();
}
/**
* @brief Get the entry filename.
* @return Returns a std::string with the filename.
* @todo Consider renaming to GetName and add a SetName member function.
*/
std::string Filename() const
{
return m_ZipEntry->GetName();
}
/**
* @brief Get the zip entry comments.
* @return Returns a std::string with the comments.
*/
std::string Comment() const
{
return m_ZipEntry->Comment();
}
/**
* @brief Get the entry time stamp.
* @return Returns a time_t object with the time stamp.
*/
const time_t& Time() const
{
return m_ZipEntry->Time();
}
private:
/**
* @brief Has the file been modified?
* @return Returns true if the entry has been modified; otherwise false.
*/
bool IsModified() const
{
return m_ZipEntry->IsModified();
}
Impl::ZipEntry* m_ZipEntry; /**< A raw (non-owning) pointer to the implementation object. */
};
} // namespace Zippy
namespace Zippy
{
/**
* @brief The ZipArchive class represents the zip archive file as a whole. It consists of the individual zip entries, which
* can be both files and folders. It is the main access point into a .zip archive on disk and can be
* used to create new archives and to open and modify existing archives.
* @details
* #### Implementation and usage details
* Using the ZipArchive class, it is possible to create new .zip archive files, as well as open and modify existing ones.
*
* A ZipArchive object holds a mz_zip_archive object (a miniz struct representing a .zip archive) as well as a std::vector
* with ZipEntry objects representing each file (entry) in the archive. The actual entry data is lazy-instantiated, so that
* the data is only loaded from the .zip archive when it is actually needed.
*
* The following example shows how a new .zip archive can be created and new entries added.
* ```cpp
* int main() {
*
* // ===== Creating empty archive
* Zippy::ZipArchive arch;
* arch.Create("./TestArchive.zip");
*
* // ===== Adding 10 entries to the archive
* for (int i = 0; i <= 9; ++i)
* arch.AddEntry(to_string(i) + ".txt", "this is test " + to_string(i));
*
* // ===== Delete the first entry
* arch.DeleteEntry("0.txt");
*
* // ===== Save and close the archive
* arch.Save();
* arch.Close();
*
* // ===== Reopen and check contents
* arch.Open("./TestArchive.zip");
* cout << "Number of entries in archive: " << arch.GetNumEntries() << endl;
* cout << "Content of \"9.txt\": " << endl << arch.GetEntry("9.txt").GetDataAsString();
*
* return 0;
* }
* ```
*
* For further information, please refer to the full API documentation below.
*
* Note that the actual files in the .zip archive can be retrieved via the ZipEntry interface, not the ZipArchive interface.
*/
class ZipArchive
{
public:
/**
* @brief Constructor. Constructs a null-archive, which can be used for creating a new .zip file
* or opening an existing one.
* @warning Before using an archive object that has been default constructed, a call to either Open() or Create() must be
* performed. Otherwise, the object will be in a null-state and calls to member functions will be undefined.
*/
explicit ZipArchive() = default;
/**
* @brief Constructor. Constructs an archive object, using the fileName input parameter. If the file already exists,
* it will be opened. Otherwise, a new object will be created.
* @details
* #### Implementation details
* The constructors tries to open an std::ifstream. If it is valid, it means that a file already exists
* and will be opened. Otherwise, the file does not exist and will be created.
* @param fileName The name of the file to open or create.
*/
explicit ZipArchive(const std::string& fileName) : m_ArchivePath(fileName)
{
// ===== Open file stream
std::ifstream f(fileName.c_str());
// ===== If successful, continue to open the file.
if (f.good()) {
f.close();
Open(fileName);
}
// ===== If unsuccessful, create the archive file and continue.
else {
f.close();
Create(fileName);
}
}
/**
* @brief Copy Constructor (deleted).
* @param other The object to copy.
* @note The copy constructor has been deleted, because it is not obvious what should happen to the underlying .zip file
* when copying the archive object. Instead, if sharing of the resource is required, a std::shared_ptr can be used.
*/
ZipArchive(const ZipArchive& other) = delete;
/**
* @brief Move Constructor.
* @param other The object to be moved.
*/
ZipArchive(ZipArchive&& other) = default;
/**
* @brief Destructor.
* @note The destructor will call the Close() member function. If the archive has been modified but not saved,
* all changes will be discarded.
*/
virtual ~ZipArchive()
{
Close();
}
/**
* @brief Copy Assignment Operator (deleted)
* @param other The object to be copied.
* @return A reference to the copied-to object.
* @note The copy assignment operator has been deleted, because it is not obvious what should happen to the underlying
* .zip file when copying the archive object. Instead, if sharing of the resource is required,
* a std::shared_ptr can be used.
*/
ZipArchive& operator=(const ZipArchive& other) = delete;
/**
* @brief Move Assignment Operator.
* @param other The object to be moved.
* @return A reference to the moved-to object.
*/
ZipArchive& operator=(ZipArchive&& other) = default;
/**
* @brief Creates a new (empty) archive file with the given filename.
* @details
* #### Implementation details
* A new archive file is created and initialized and thereafter closed, creating an empty archive file.
* After ensuring that the file is valid (i.e. not somehow corrupted), it is opened using the Open() member function.
* @param fileName The filename for the new archive.
*/
void Create(const std::string& fileName)
{
// ===== Prepare an archive file;
mz_zip_archive archive = mz_zip_archive();
mz_zip_writer_init_file(&archive, fileName.c_str(), 0);
// ===== Finalize and close the temporary archive
mz_zip_writer_finalize_archive(&archive);
mz_zip_writer_end(&archive);
// ===== Validate the temporary file
mz_zip_error errordata;
if (!mz_zip_validate_file_archive(fileName.c_str(), 0, &errordata)) {
throw ZipRuntimeError(mz_zip_get_error_string(errordata));
}
// ===== If everything is OK, open the newly created archive.
Open(fileName);
}
/**
* @brief Open an existing archive file with the given filename.
* @details
* ##### Implementation details
* The archive file is opened and meta data for all the entries in the archive is loaded into memory.
* @param fileName The filename of the archive to open.
* @note If more than one entry with the same name exists in the archive, only the newest one will be loaded.
* When saving the archive, only the loaded entries will be kept; other entries with the same name will be deleted.
*/
void Open(const std::string& fileName)
{
// ===== Open the archive file for reading.
if (m_IsOpen) {
mz_zip_reader_end(&m_Archive);
}
m_ArchivePath = fileName;
if (!mz_zip_reader_init_file(&m_Archive, m_ArchivePath.c_str(), 0)) {
throw ZipRuntimeError(mz_zip_get_error_string(m_Archive.m_last_error));
}
m_IsOpen = true;
// ===== Iterate through the archive and add the entries to the internal data structure
for (unsigned int i = 0; i < mz_zip_reader_get_num_files(&m_Archive); i++) {
ZipEntryInfo info;
if (!mz_zip_reader_file_stat(&m_Archive, i, &info)) {
throw ZipRuntimeError(mz_zip_get_error_string(m_Archive.m_last_error));
}
m_ZipEntries.emplace_back(Impl::ZipEntry(info));
}
// ===== Remove entries with identical names. The newest entries will be retained.
auto isEqual = [](const Impl::ZipEntry& a, const Impl::ZipEntry& b) { return a.GetName() == b.GetName(); };
std::reverse(m_ZipEntries.begin(), m_ZipEntries.end());
m_ZipEntries.erase(std::unique(m_ZipEntries.begin(), m_ZipEntries.end(), isEqual), m_ZipEntries.end());
std::reverse(m_ZipEntries.begin(), m_ZipEntries.end());
// ===== Add folder entries if they don't exist
for (auto& entry : GetEntryNames(false, true)) {
if (entry.find('/') != std::string::npos) {
AddEntry(entry.substr(0, entry.rfind('/') + 1), "");
}
}
}
/**
* @brief Close the archive for reading and writing.
* @note If the archive has been modified but not saved, all changes will be discarded.
*/
void Close()
{
if (IsOpen()) {
mz_zip_reader_end(&m_Archive);
}
m_ZipEntries.clear();
m_ArchivePath = "";
}
/**
* @brief Checks if the archive file is open for reading and writing.
* @return true if it is open; otherwise false;
*/
bool IsOpen() const
{
return m_IsOpen;
}
/**
* @brief Get a list of the entries in the archive. Depending on the input parameters, the list will include
* directories, files or both.
* @param includeDirs If true, the list will include directories; otherwise not. Default is true
* @param includeFiles If true, the list will include files; otherwise not. Default is true
* @return A std::vector of std::strings with the entry names.
*/
std::vector<std::string> GetEntryNames(bool includeDirs = true, bool includeFiles = true) const
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetEntryNames on empty ZipArchive object!");
std::vector<std::string> result;
// ===== Iterate through all the entries in the archive
for (auto& item : m_ZipEntries) {
// ===== If directories should be included and the current entry is a directory, add it to the result.
if (includeDirs && item.IsDirectory()) {
result.emplace_back(item.GetName());
continue;
}
// ===== If files should be included and the current entry is a file, add it to the result.
if (includeFiles && !item.IsDirectory()) {
result.emplace_back(item.GetName());
continue;
}
}
return result;
}
/**
* @brief Get a list of the entries in a specific directory of the archive. Depending on the input parameters,
* the list will include directories, files or both.
* @details This function behaves slightly different than the GetEntryNames() function. All entries in the
* requested folder will be returned as absolute paths; however, only one level of subfolders will be returned.
* @param dir The directory with the entries to get.
* @param includeDirs If true, the list will include directories; otherwise not. Default is true
* @param includeFiles If true, the list will include files; otherwise not. Default is true
* @return A std::vector of std::strings with the entry names. The directory itself is not included.
*/
std::vector<std::string> GetEntryNamesInDir(const std::string& dir, bool includeDirs = true, bool includeFiles = true) const
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetEntryNamesInDir on empty ZipArchive object!");
// ===== Get the full list of entries
auto result = GetEntryNames(includeDirs, includeFiles);
// ===== Remove all entries not in the directory in question, as well as the root directory itself.
if (!dir.empty()) {
auto theDir = dir;
if (theDir.back() != '/') {
theDir += '/';
}
result.erase(std::remove_if(result.begin(),
result.end(),
[&](const std::string& filename) {
return filename.substr(0, theDir.size()) != theDir || filename == theDir;
}),
result.end());
}
// ===== Ensure that only one level of subdirectories are included.
result.erase(std::remove_if(result.begin(),
result.end(),
[&](const std::string& filename) {
auto subFolderDepth = std::count(filename.begin(), filename.end(), '/');
auto rootDepth =
(dir.empty() ? 1
: (dir.back() == '/' ? std::count(dir.begin(), dir.end(), '/') + 1
: std::count(dir.begin(), dir.end(), '/') + 2));
return (subFolderDepth == rootDepth && filename.back() != '/') || (subFolderDepth > rootDepth);
}),
result.end());
return result;
}
/**
* @brief Get a list of the metadata for entries in the archive. Depending on the input parameters, the list will include
* directories, files or both.
* @param includeDirs If true, the list will include directories; otherwise not. Default is true
* @param includeFiles If true, the list will include files; otherwise not. Default is true
* @return A std::vector of ZipEntryMetaData structs with the entry metadata.
*/
std::vector<ZipEntryMetaData> GetMetaData(bool includeDirs = true, bool includeFiles = true)
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetMetaData on empty ZipArchive object!");
std::vector<ZipEntryMetaData> result;
for (auto& item : m_ZipEntries) {
if (includeDirs && item.IsDirectory()) {
result.emplace_back(ZipEntryMetaData(item.m_EntryInfo));
continue;
}
if (includeFiles && !item.IsDirectory()) {
result.emplace_back(ZipEntryMetaData(item.m_EntryInfo));
continue;
}
}
return result;
}
/**
* @brief Get a list of the metadata for entries in a specific directory of the archive. Depending on the input
* parameters, the list will include directories, files or both.
* @param dir The directory with the entries to get.
* @param includeDirs If true, the list will include directories; otherwise not. Default is true
* @param includeFiles If true, the list will include files; otherwise not. Default is true
* @return A std::vector of ZipEntryMetaData structs with the entry metadata. The directory itself is not included.
*/
std::vector<ZipEntryMetaData> GetMetaDataInDir(const std::string& dir, bool includeDirs = true, bool includeFiles = true)
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetMetaDataInDir on empty ZipArchive object!");
std::vector<ZipEntryMetaData> result;
for (auto& item : m_ZipEntries) {
if (item.GetName().substr(0, dir.size()) != dir) {
continue;
}
if (includeDirs && item.IsDirectory()) {
result.emplace_back(ZipEntryMetaData(item.m_EntryInfo));
continue;
}
if (includeFiles && !item.IsDirectory()) {
result.emplace_back(ZipEntryMetaData(item.m_EntryInfo));
continue;
}
}
return result;
}
/**
* @brief Get the number of entries in the archive. Depending on the input parameters, the number will include
* directories, files or both.
* @param includeDirs If true, the number will include directories; otherwise not. Default is true
* @param includeFiles If true, the number will include files; otherwise not. Default is true
* @return An int with the number of entries.
*/
int GetNumEntries(bool includeDirs = true, bool includeFiles = true) const
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetNumEntries on empty ZipArchive object!");
return GetEntryNames(includeDirs, includeFiles).size();
}
/**
* @brief Get the number of entries in a specific directory of the archive. Depending on the input parameters,
* the list will include directories, files or both.
* @param dir The directory with the entries to get.
* @param includeDirs If true, the number will include directories; otherwise not. Default is true.
* @param includeFiles If true, the number will include files; otherwise not. Default is true.
* @return An int with the number of entries. The directory itself is not included.
*/
int GetNumEntriesInDir(const std::string& dir, bool includeDirs = true, bool includeFiles = true) const
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetNumEntriesInDir on empty ZipArchive object!");
return GetEntryNamesInDir(dir, includeDirs, includeFiles).size();
}
/**
* @brief Check if an entry with a given name exists in the archive.
* @param entryName The name of the entry to check for.
* @return true if it exists; otherwise false;
*/
bool HasEntry(const std::string& entryName) const
{
if (!IsOpen()) throw ZipLogicError("Cannot call HasEntry on empty ZipArchive object!");
auto result = GetEntryNames(true, true);
return std::find(result.begin(), result.end(), entryName) != result.end();
}
/**
* @brief Save the archive with a new name. The original archive will remain unchanged.
* @param filename The new filename.
* @note If no filename is provided, the file will be saved with the existing name, overwriting any existing data.
* @throws ZipException A ZipException object is thrown if calls to miniz function fails.
*/
void Save(std::string filename = "")
{
if (!IsOpen()) throw ZipLogicError("Cannot call Save on empty ZipArchive object!");
if (filename.empty()) {
filename = m_ArchivePath;
}
// ===== Generate a random file name with the same path as the current file
std::string tempPath = filename.substr(0, filename.rfind('/') + 1) + Impl::GenerateRandomName(20);
// ===== Prepare an temporary archive file with the random filename;
mz_zip_archive tempArchive = mz_zip_archive();
mz_zip_writer_init_file(&tempArchive, tempPath.c_str(), 0);
// ===== Iterate through the ZipEntries and add entries to the temporary file
for (auto& file : m_ZipEntries) {
if (file.IsDirectory()) continue; // TODO: Ensure this is the right thing to do (Excel issue)
if (!file.IsModified()) {
if (!mz_zip_writer_add_from_zip_reader(&tempArchive, &m_Archive, file.Index())) {
throw ZipRuntimeError(mz_zip_get_error_string(m_Archive.m_last_error));
}
}
else {
if (!mz_zip_writer_add_mem(&tempArchive,
file.GetName().c_str(),
file.m_EntryData.data(),
file.m_EntryData.size(),
MZ_DEFAULT_COMPRESSION)) {
throw ZipRuntimeError(mz_zip_get_error_string(m_Archive.m_last_error));
}
}
}
// ===== Finalize and close the temporary archive
mz_zip_writer_finalize_archive(&tempArchive);
mz_zip_writer_end(&tempArchive);
// ===== Validate the temporary file
mz_zip_error errordata;
if (!mz_zip_validate_file_archive(tempPath.c_str(), 0, &errordata)) {
throw ZipRuntimeError(mz_zip_get_error_string(errordata));
}
// ===== Close the current archive, delete the file with input filename (if it exists), rename the temporary and call Open.
Close();
nowide::remove(filename.c_str());
nowide::rename(tempPath.c_str(), filename.c_str());
Open(filename);
}
/**
* @brief
* @param stream
*/
void Save(std::ostream& stream)
{
if (!IsOpen()) throw ZipLogicError("Cannot call Save on empty ZipArchive object!");
// TODO: To be implemented
}
/**
* @brief Deletes an entry from the archive.
* @param name The name of the entry to delete.
*/
void DeleteEntry(const std::string& name)
{
if (!IsOpen()) throw ZipLogicError("Cannot call DeleteEntry on empty ZipArchive object!");
m_ZipEntries.erase(std::remove_if(m_ZipEntries.begin(),
m_ZipEntries.end(),
[&](const Impl::ZipEntry& entry) { return name == entry.GetName(); }),
m_ZipEntries.end());
}
/**
* @brief Get the entry with the specified name.
* @param name The name of the entry in the archive.
* @return A ZipEntry object with the requested entry.
*/
ZipEntry GetEntry(const std::string& name)
{
if (!IsOpen()) throw ZipLogicError("Cannot call GetEntry on empty ZipArchive object!");
// ===== Look up ZipEntry object.
auto result = std::find_if(m_ZipEntries.begin(), m_ZipEntries.end(), [&](const Impl::ZipEntry& entry) {
return name == entry.GetName();
});
// ===== If data has not been extracted from the archive (i.e., m_EntryData is empty),
// ===== extract the data from the archive to the ZipEntry object.
if (result->m_EntryData.empty()) {
result->m_EntryData.resize(result->UncompressedSize());
mz_zip_reader_extract_file_to_mem(&m_Archive, name.c_str(), result->m_EntryData.data(), result->m_EntryData.size(), 0);
}
// ===== Check that the operation was successful
if (!result->IsDirectory() && result->m_EntryData.data() == nullptr) {
throw ZipRuntimeError(mz_zip_get_error_string(m_Archive.m_last_error));
}
// ===== Return ZipEntry object with the file data.
return ZipEntry(&*result);
}
/**
* @brief Extract the entry with the provided name to the destination path.
* @param name The name of the entry to extract.
* @param dest The path to extract the entry to.
*/
void ExtractEntry(const std::string& name, const std::string& dest)
{
if (!IsOpen()) throw ZipLogicError("Cannot call ExtractEntry on empty ZipArchive object!");
auto entry = GetEntry(name);
// ===== If the entry is a directory, create the directory as a subdirectory to dest
if (entry.IsDirectory()) {
#ifdef _WIN32
_mkdir((dest + entry.Filename()).c_str());
#else
mkdir((dest + entry.Filename()).c_str(), 0733);
#endif
}
// ===== If the entry is a file, stream the entry data to a file.
else {
std::ofstream output(dest + "/" + entry.Filename(), std::ios::binary);
for (auto ch : entry.GetData()) {
output << static_cast<unsigned char>(ch);
}
output.close();
}
}
/**
* @brief Extract all entries in the given directory to the destination path.
* @param dir The name of the directory to extract.
* @param dest The path to extract the entry to.
* @todo To be implemented
*/
void ExtractDir(const std::string& dir, const std::string& dest)
{
if (!IsOpen()) throw ZipLogicError("Cannot call ExtractDir on empty ZipArchive object!");
}
/**
* @brief Extract all archive contents to the destination path.
* @param dest The path to extract the entry to.
* @todo To be implemented
*/
void ExtractAll(const std::string& dest)
{
if (!IsOpen()) throw ZipLogicError("Cannot call ExtractAll on empty ZipArchive object!");
}
/**
* @brief Add a new entry to the archive.
* @param name The name of the entry to add.
* @param data The ZipEntryData to add. This is an alias of a std::vector<std::byte>, holding the binary data of the entry.
* @return The ZipEntry object that has been added to the archive.
* @note If an entry with given name already exists, it will be overwritten.
*/
ZipEntry AddEntry(const std::string& name, const ZipEntryData& data)
{
return AddEntryImpl(name, data);
}
/**
* @brief Add a new entry to the archive.
* @param name The name of the entry to add.
* @param data The std::string data to add.
* @return The ZipEntry object that has been added to the archive.
* @note If an entry with given name already exists, it will be overwritten.
*/
ZipEntry AddEntry(const std::string& name, const std::string& data)
{
ZipEntryData stringData;
stringData.reserve(data.size());
for (const auto& ch : data) {
stringData.emplace_back(ch);
}
return AddEntryImpl(name, stringData);
}
/**
* @brief Add a new entry to the archive, using another entry as input. This is mostly used for cloning existing entries
* in the same archive, or for copying entries from one archive to another.
* @param name The name of the entry to add.
* @param entry The ZipEntry to add.
* @return The ZipEntry object that has been added to the archive.
* @note If an entry with given name already exists, it will be overwritten.
*/
ZipEntry AddEntry(const std::string& name, const ZipEntry& entry)
{
return AddEntryImpl(name, entry.GetData());
}
private:
/**
* @brief Add a new entry to the archive.
* @param name The name of the entry to add.
* @param data The ZipEntryData to add. This is an alias of a std::vector<std::byte>, holding the binary data of the entry.
* @return The ZipEntry object that has been added to the archive.
* @note If an entry with given name already exists, it will be overwritten.
*/
ZipEntry AddEntryImpl(const std::string& name, const ZipEntryData& data)
{
if (!IsOpen()) throw ZipLogicError("Cannot call AddEntry on empty ZipArchive object!");
// ===== Ensure that all folders and subfolders have an entry in the archive
auto folders = GetEntryNames(true, false);
auto pos = 0;
while (name.find('/', pos) != std::string::npos) {
pos = name.find('/', pos) + 1;
auto folder = name.substr(0, pos);
// ===== If folder isn't registered in the archive, add it.
if (std::find(folders.begin(), folders.end(), folder) == folders.end()) {
m_ZipEntries.emplace_back(Impl::ZipEntry(folder, ""));
folders.emplace_back(folder);
}
}
// ===== Check if an entry with the given name already exists in the archive.
auto result = std::find_if(m_ZipEntries.begin(), m_ZipEntries.end(), [&](const Impl::ZipEntry& entry) {
return name == entry.GetName();
});
// ===== If the entry exists, replace the existing data with the new data, and return the ZipEntry object.
if (result != m_ZipEntries.end()) {
result->SetData(data);
return ZipEntry(&*result);
}
// ===== Finally, add a new entry with the given name and data, and return the object.
return ZipEntry(&m_ZipEntries.emplace_back(Impl::ZipEntry(name, data)));
}
private:
mz_zip_archive m_Archive = mz_zip_archive(); /**< The struct used by miniz, to handle archive files. */
std::string m_ArchivePath = ""; /**< The path of the archive file. */
bool m_IsOpen = false; /**< A flag indicating if the file is currently open for reading and writing. */
std::vector<Impl::ZipEntry> m_ZipEntries = std::vector<Impl::ZipEntry>(); /**< Data structure for all entries in the archive. */
};
} // namespace Zippy
#pragma warning(pop)
#endif // ZIPPYHEADERONLY_ZIPPY_HPP
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