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deleted fex from trunk (for some reason)

This commit is contained in:
squall-leonhart 2011-12-04 02:57:47 +00:00
parent e1cafeb1e9
commit b907d76fbf
70 changed files with 0 additions and 12991 deletions
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203
fex/7z_C/7z.h
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@ -1,203 +0,0 @@
/* 7z.h -- 7z interface
2010-03-11 : Igor Pavlov : Public domain */
#ifndef __7Z_H
#define __7Z_H
#include "7zBuf.h"
EXTERN_C_BEGIN
#define k7zStartHeaderSize 0x20
#define k7zSignatureSize 6
extern Byte k7zSignature[k7zSignatureSize];
#define k7zMajorVersion 0
enum EIdEnum
{
k7zIdEnd,
k7zIdHeader,
k7zIdArchiveProperties,
k7zIdAdditionalStreamsInfo,
k7zIdMainStreamsInfo,
k7zIdFilesInfo,
k7zIdPackInfo,
k7zIdUnpackInfo,
k7zIdSubStreamsInfo,
k7zIdSize,
k7zIdCRC,
k7zIdFolder,
k7zIdCodersUnpackSize,
k7zIdNumUnpackStream,
k7zIdEmptyStream,
k7zIdEmptyFile,
k7zIdAnti,
k7zIdName,
k7zIdCTime,
k7zIdATime,
k7zIdMTime,
k7zIdWinAttributes,
k7zIdComment,
k7zIdEncodedHeader,
k7zIdStartPos,
k7zIdDummy
};
typedef struct
{
UInt32 NumInStreams;
UInt32 NumOutStreams;
UInt64 MethodID;
CBuf Props;
} CSzCoderInfo;
void SzCoderInfo_Init(CSzCoderInfo *p);
void SzCoderInfo_Free(CSzCoderInfo *p, ISzAlloc *alloc);
typedef struct
{
UInt32 InIndex;
UInt32 OutIndex;
} CSzBindPair;
typedef struct
{
CSzCoderInfo *Coders;
CSzBindPair *BindPairs;
UInt32 *PackStreams;
UInt64 *UnpackSizes;
UInt32 NumCoders;
UInt32 NumBindPairs;
UInt32 NumPackStreams;
int UnpackCRCDefined;
UInt32 UnpackCRC;
UInt32 NumUnpackStreams;
} CSzFolder;
void SzFolder_Init(CSzFolder *p);
UInt64 SzFolder_GetUnpackSize(CSzFolder *p);
int SzFolder_FindBindPairForInStream(CSzFolder *p, UInt32 inStreamIndex);
UInt32 SzFolder_GetNumOutStreams(CSzFolder *p);
UInt64 SzFolder_GetUnpackSize(CSzFolder *p);
SRes SzFolder_Decode(const CSzFolder *folder, const UInt64 *packSizes,
ILookInStream *stream, UInt64 startPos,
Byte *outBuffer, size_t outSize, ISzAlloc *allocMain);
typedef struct
{
UInt32 Low;
UInt32 High;
} CNtfsFileTime;
typedef struct
{
CNtfsFileTime MTime;
UInt64 Size;
UInt32 Crc;
UInt32 Attrib;
Byte HasStream;
Byte IsDir;
Byte IsAnti;
Byte CrcDefined;
Byte MTimeDefined;
Byte AttribDefined;
} CSzFileItem;
void SzFile_Init(CSzFileItem *p);
typedef struct
{
UInt64 *PackSizes;
Byte *PackCRCsDefined;
UInt32 *PackCRCs;
CSzFolder *Folders;
CSzFileItem *Files;
UInt32 NumPackStreams;
UInt32 NumFolders;
UInt32 NumFiles;
} CSzAr;
void SzAr_Init(CSzAr *p);
void SzAr_Free(CSzAr *p, ISzAlloc *alloc);
/*
SzExtract extracts file from archive
*outBuffer must be 0 before first call for each new archive.
Extracting cache:
If you need to decompress more than one file, you can send
these values from previous call:
*blockIndex,
*outBuffer,
*outBufferSize
You can consider "*outBuffer" as cache of solid block. If your archive is solid,
it will increase decompression speed.
If you use external function, you can declare these 3 cache variables
(blockIndex, outBuffer, outBufferSize) as static in that external function.
Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
*/
typedef struct
{
CSzAr db;
UInt64 startPosAfterHeader;
UInt64 dataPos;
UInt32 *FolderStartPackStreamIndex;
UInt64 *PackStreamStartPositions;
UInt32 *FolderStartFileIndex;
UInt32 *FileIndexToFolderIndexMap;
size_t *FileNameOffsets; /* in 2-byte steps */
CBuf FileNames; /* UTF-16-LE */
} CSzArEx;
void SzArEx_Init(CSzArEx *p);
void SzArEx_Free(CSzArEx *p, ISzAlloc *alloc);
UInt64 SzArEx_GetFolderStreamPos(const CSzArEx *p, UInt32 folderIndex, UInt32 indexInFolder);
int SzArEx_GetFolderFullPackSize(const CSzArEx *p, UInt32 folderIndex, UInt64 *resSize);
/*
if dest == NULL, the return value specifies the required size of the buffer,
in 16-bit characters, including the null-terminating character.
if dest != NULL, the return value specifies the number of 16-bit characters that
are written to the dest, including the null-terminating character. */
size_t SzArEx_GetFileNameUtf16(const CSzArEx *p, size_t fileIndex, UInt16 *dest);
SRes SzArEx_Extract(
const CSzArEx *db,
ILookInStream *inStream,
UInt32 fileIndex, /* index of file */
UInt32 *blockIndex, /* index of solid block */
Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
size_t *outBufferSize, /* buffer size for output buffer */
size_t *offset, /* offset of stream for required file in *outBuffer */
size_t *outSizeProcessed, /* size of file in *outBuffer */
ISzAlloc *allocMain,
ISzAlloc *allocTemp);
/*
SzArEx_Open Errors:
SZ_ERROR_NO_ARCHIVE
SZ_ERROR_ARCHIVE
SZ_ERROR_UNSUPPORTED
SZ_ERROR_MEM
SZ_ERROR_CRC
SZ_ERROR_INPUT_EOF
SZ_ERROR_FAIL
*/
SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream, ISzAlloc *allocMain, ISzAlloc *allocTemp);
EXTERN_C_END
#endif

76
fex/7z_C/7zAlloc.c
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/* 7zAlloc.c -- Allocation functions
2010-10-29 : Igor Pavlov : Public domain */
#include "7zAlloc.h"
/* #define _SZ_ALLOC_DEBUG */
/* use _SZ_ALLOC_DEBUG to debug alloc/free operations */
#ifdef _SZ_ALLOC_DEBUG
#ifdef _WIN32
#include <windows.h>
#endif
#include <stdio.h>
int g_allocCount = 0;
int g_allocCountTemp = 0;
#endif
void *SzAlloc(void *p, size_t size)
{
p = p;
if (size == 0)
return 0;
#ifdef _SZ_ALLOC_DEBUG
fprintf(stderr, "\nAlloc %10d bytes; count = %10d", size, g_allocCount);
g_allocCount++;
#endif
return malloc(size);
}
void SzFree(void *p, void *address)
{
p = p;
#ifdef _SZ_ALLOC_DEBUG
if (address != 0)
{
g_allocCount--;
fprintf(stderr, "\nFree; count = %10d", g_allocCount);
}
#endif
free(address);
}
void *SzAllocTemp(void *p, size_t size)
{
p = p;
if (size == 0)
return 0;
#ifdef _SZ_ALLOC_DEBUG
fprintf(stderr, "\nAlloc_temp %10d bytes; count = %10d", size, g_allocCountTemp);
g_allocCountTemp++;
#ifdef _WIN32
return HeapAlloc(GetProcessHeap(), 0, size);
#endif
#endif
return malloc(size);
}
void SzFreeTemp(void *p, void *address)
{
p = p;
#ifdef _SZ_ALLOC_DEBUG
if (address != 0)
{
g_allocCountTemp--;
fprintf(stderr, "\nFree_temp; count = %10d", g_allocCountTemp);
}
#ifdef _WIN32
HeapFree(GetProcessHeap(), 0, address);
return;
#endif
#endif
free(address);
}

15
fex/7z_C/7zAlloc.h
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/* 7zAlloc.h -- Allocation functions
2010-10-29 : Igor Pavlov : Public domain */
#ifndef __7Z_ALLOC_H
#define __7Z_ALLOC_H
#include <stdlib.h>
void *SzAlloc(void *p, size_t size);
void SzFree(void *p, void *address);
void *SzAllocTemp(void *p, size_t size);
void SzFreeTemp(void *p, void *address);
#endif

36
fex/7z_C/7zBuf.c
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/* 7zBuf.c -- Byte Buffer
2008-03-28
Igor Pavlov
Public domain */
#include "7zBuf.h"
void Buf_Init(CBuf *p)
{
p->data = 0;
p->size = 0;
}
int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc)
{
p->size = 0;
if (size == 0)
{
p->data = 0;
return 1;
}
p->data = (Byte *)alloc->Alloc(alloc, size);
if (p->data != 0)
{
p->size = size;
return 1;
}
return 0;
}
void Buf_Free(CBuf *p, ISzAlloc *alloc)
{
alloc->Free(alloc, p->data);
p->data = 0;
p->size = 0;
}

39
fex/7z_C/7zBuf.h
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/* 7zBuf.h -- Byte Buffer
2009-02-07 : Igor Pavlov : Public domain */
#ifndef __7Z_BUF_H
#define __7Z_BUF_H
#include "Types.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct
{
Byte *data;
size_t size;
} CBuf;
void Buf_Init(CBuf *p);
int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc);
void Buf_Free(CBuf *p, ISzAlloc *alloc);
typedef struct
{
Byte *data;
size_t size;
size_t pos;
} CDynBuf;
void DynBuf_Construct(CDynBuf *p);
void DynBuf_SeekToBeg(CDynBuf *p);
int DynBuf_Write(CDynBuf *p, const Byte *buf, size_t size, ISzAlloc *alloc);
void DynBuf_Free(CDynBuf *p, ISzAlloc *alloc);
#ifdef __cplusplus
}
#endif
#endif

194
fex/7z_C/7zC.txt
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7z ANSI-C Decoder 4.62
----------------------
7z ANSI-C provides 7z/LZMA decoding.
7z ANSI-C version is simplified version ported from C++ code.
LZMA is default and general compression method of 7z format
in 7-Zip compression program (www.7-zip.org). LZMA provides high
compression ratio and very fast decompression.
LICENSE
-------
7z ANSI-C Decoder is part of the LZMA SDK.
LZMA SDK is written and placed in the public domain by Igor Pavlov.
Files
---------------------
7zDecode.* - Low level 7z decoding
7zExtract.* - High level 7z decoding
7zHeader.* - .7z format constants
7zIn.* - .7z archive opening
7zItem.* - .7z structures
7zMain.c - Test application
How To Use
----------
You must download 7-Zip program from www.7-zip.org.
You can create .7z archive with 7z.exe or 7za.exe:
7za.exe a archive.7z *.htm -r -mx -m0fb=255
If you have big number of files in archive, and you need fast extracting,
you can use partly-solid archives:
7za.exe a archive.7z *.htm -ms=512K -r -mx -m0fb=255 -m0d=512K
In that example 7-Zip will use 512KB solid blocks. So it needs to decompress only
512KB for extracting one file from such archive.
Limitations of current version of 7z ANSI-C Decoder
---------------------------------------------------
- It reads only "FileName", "Size", "LastWriteTime" and "CRC" information for each file in archive.
- It supports only LZMA and Copy (no compression) methods with BCJ or BCJ2 filters.
- It converts original UTF-16 Unicode file names to UTF-8 Unicode file names.
These limitations will be fixed in future versions.
Using 7z ANSI-C Decoder Test application:
-----------------------------------------
Usage: 7zDec <command> <archive_name>
<Command>:
e: Extract files from archive
l: List contents of archive
t: Test integrity of archive
Example:
7zDec l archive.7z
lists contents of archive.7z
7zDec e archive.7z
extracts files from archive.7z to current folder.
How to use .7z Decoder
----------------------
Memory allocation
~~~~~~~~~~~~~~~~~
7z Decoder uses two memory pools:
1) Temporary pool
2) Main pool
Such scheme can allow you to avoid fragmentation of allocated blocks.
Steps for using 7z decoder
--------------------------
Use code at 7zMain.c as example.
1) Declare variables:
inStream /* implements ILookInStream interface */
CSzArEx db; /* 7z archive database structure */
ISzAlloc allocImp; /* memory functions for main pool */
ISzAlloc allocTempImp; /* memory functions for temporary pool */
2) call CrcGenerateTable(); function to initialize CRC structures.
3) call SzArEx_Init(&db); function to initialize db structures.
4) call SzArEx_Open(&db, inStream, &allocMain, &allocTemp) to open archive
This function opens archive "inStream" and reads headers to "db".
All items in "db" will be allocated with "allocMain" functions.
SzArEx_Open function allocates and frees temporary structures by "allocTemp" functions.
5) List items or Extract items
Listing code:
~~~~~~~~~~~~~
{
UInt32 i;
for (i = 0; i < db.db.NumFiles; i++)
{
CFileItem *f = db.db.Files + i;
printf("%10d %s\n", (int)f->Size, f->Name);
}
}
Extracting code:
~~~~~~~~~~~~~~~~
SZ_RESULT SzAr_Extract(
CArchiveDatabaseEx *db,
ILookInStream *inStream,
UInt32 fileIndex, /* index of file */
UInt32 *blockIndex, /* index of solid block */
Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
size_t *outBufferSize, /* buffer size for output buffer */
size_t *offset, /* offset of stream for required file in *outBuffer */
size_t *outSizeProcessed, /* size of file in *outBuffer */
ISzAlloc *allocMain,
ISzAlloc *allocTemp);
If you need to decompress more than one file, you can send these values from previous call:
blockIndex,
outBuffer,
outBufferSize,
You can consider "outBuffer" as cache of solid block. If your archive is solid,
it will increase decompression speed.
After decompressing you must free "outBuffer":
allocImp.Free(outBuffer);
6) call SzArEx_Free(&db, allocImp.Free) to free allocated items in "db".
Memory requirements for .7z decoding
------------------------------------
Memory usage for Archive opening:
- Temporary pool:
- Memory for uncompressed .7z headers
- some other temporary blocks
- Main pool:
- Memory for database:
Estimated size of one file structures in solid archive:
- Size (4 or 8 Bytes)
- CRC32 (4 bytes)
- LastWriteTime (8 bytes)
- Some file information (4 bytes)
- File Name (variable length) + pointer + allocation structures
Memory usage for archive Decompressing:
- Temporary pool:
- Memory for LZMA decompressing structures
- Main pool:
- Memory for decompressed solid block
- Memory for temprorary buffers, if BCJ2 fileter is used. Usually these
temprorary buffers can be about 15% of solid block size.
7z Decoder doesn't allocate memory for compressed blocks.
Instead of this, you must allocate buffer with desired
size before calling 7z Decoder. Use 7zMain.c as example.
Defines
-------
_SZ_ALLOC_DEBUG - define it if you want to debug alloc/free operations to stderr.
---
http://www.7-zip.org
http://www.7-zip.org/sdk.html
http://www.7-zip.org/support.html

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fex/7z_C/7zCrc.c
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/* 7zCrc.c -- CRC32 calculation
2009-11-23 : Igor Pavlov : Public domain */
#include "7zCrc.h"
#include "CpuArch.h"
#define kCrcPoly 0xEDB88320
#ifdef MY_CPU_LE
#define CRC_NUM_TABLES 8
#else
#define CRC_NUM_TABLES 1
#endif
typedef UInt32 (MY_FAST_CALL *CRC_FUNC)(UInt32 v, const void *data, size_t size, const UInt32 *table);
static CRC_FUNC g_CrcUpdate;
UInt32 g_CrcTable[256 * CRC_NUM_TABLES];
#if CRC_NUM_TABLES == 1
#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
static UInt32 MY_FAST_CALL CrcUpdateT1(UInt32 v, const void *data, size_t size, const UInt32 *table)
{
const Byte *p = (const Byte *)data;
for (; size > 0; size--, p++)
v = CRC_UPDATE_BYTE_2(v, *p);
return v;
}
#else
UInt32 MY_FAST_CALL CrcUpdateT4(UInt32 v, const void *data, size_t size, const UInt32 *table);
UInt32 MY_FAST_CALL CrcUpdateT8(UInt32 v, const void *data, size_t size, const UInt32 *table);
#endif
UInt32 MY_FAST_CALL CrcUpdate(UInt32 v, const void *data, size_t size)
{
return g_CrcUpdate(v, data, size, g_CrcTable);
}
UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size)
{
return g_CrcUpdate(CRC_INIT_VAL, data, size, g_CrcTable) ^ CRC_INIT_VAL;
}
void MY_FAST_CALL CrcGenerateTable()
{
UInt32 i;
for (i = 0; i < 256; i++)
{
UInt32 r = i;
unsigned j;
for (j = 0; j < 8; j++)
r = (r >> 1) ^ (kCrcPoly & ~((r & 1) - 1));
g_CrcTable[i] = r;
}
#if CRC_NUM_TABLES == 1
g_CrcUpdate = CrcUpdateT1;
#else
for (; i < 256 * CRC_NUM_TABLES; i++)
{
UInt32 r = g_CrcTable[i - 256];
g_CrcTable[i] = g_CrcTable[r & 0xFF] ^ (r >> 8);
}
g_CrcUpdate = CrcUpdateT4;
#ifdef MY_CPU_X86_OR_AMD64
if (!CPU_Is_InOrder())
g_CrcUpdate = CrcUpdateT8;
#endif
#endif
}

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fex/7z_C/7zCrc.h
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/* 7zCrc.h -- CRC32 calculation
2009-11-21 : Igor Pavlov : Public domain */
#ifndef __7Z_CRC_H
#define __7Z_CRC_H
#include "Types.h"
EXTERN_C_BEGIN
extern UInt32 g_CrcTable[];
/* Call CrcGenerateTable one time before other CRC functions */
void MY_FAST_CALL CrcGenerateTable(void);
#define CRC_INIT_VAL 0xFFFFFFFF
#define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL)
#define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
EXTERN_C_END
#endif

34
fex/7z_C/7zCrcOpt.c
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/* 7zCrcOpt.c -- CRC32 calculation : optimized version
2009-11-23 : Igor Pavlov : Public domain */
#include "CpuArch.h"
#ifdef MY_CPU_LE
#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
UInt32 MY_FAST_CALL CrcUpdateT4(UInt32 v, const void *data, size_t size, const UInt32 *table)
{
const Byte *p = (const Byte *)data;
for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
v = CRC_UPDATE_BYTE_2(v, *p);
for (; size >= 4; size -= 4, p += 4)
{
v ^= *(const UInt32 *)p;
v =
table[0x300 + (v & 0xFF)] ^
table[0x200 + ((v >> 8) & 0xFF)] ^
table[0x100 + ((v >> 16) & 0xFF)] ^
table[0x000 + ((v >> 24))];
}
for (; size > 0; size--, p++)
v = CRC_UPDATE_BYTE_2(v, *p);
return v;
}
UInt32 MY_FAST_CALL CrcUpdateT8(UInt32 v, const void *data, size_t size, const UInt32 *table)
{
return CrcUpdateT4(v, data, size, table);
}
#endif

470
fex/7z_C/7zDecode.c
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/* 7zDec.c -- Decoding from 7z folder
2010-11-02 : Igor Pavlov : Public domain */
#include <string.h>
/* #define _7ZIP_PPMD_SUPPPORT */
#include "7z.h"
#include "Bcj2.h"
#include "Bra.h"
#include "CpuArch.h"
#include "LzmaDec.h"
#include "Lzma2Dec.h"
#ifdef _7ZIP_PPMD_SUPPPORT
#include "Ppmd7.h"
#endif
#define k_Copy 0
#define k_LZMA2 0x21
#define k_LZMA 0x30101
#define k_BCJ 0x03030103
#define k_PPC 0x03030205
#define k_ARM 0x03030501
#define k_ARMT 0x03030701
#define k_SPARC 0x03030805
#define k_BCJ2 0x0303011B
#ifdef _7ZIP_PPMD_SUPPPORT
#define k_PPMD 0x30401
typedef struct
{
IByteIn p;
const Byte *cur;
const Byte *end;
const Byte *begin;
UInt64 processed;
Bool extra;
SRes res;
ILookInStream *inStream;
} CByteInToLook;
static Byte ReadByte(void *pp)
{
CByteInToLook *p = (CByteInToLook *)pp;
if (p->cur != p->end)
return *p->cur++;
if (p->res == SZ_OK)
{
size_t size = p->cur - p->begin;
p->processed += size;
p->res = p->inStream->Skip(p->inStream, size);
size = (1 << 25);
p->res = p->inStream->Look(p->inStream, (const void **)&p->begin, &size);
p->cur = p->begin;
p->end = p->begin + size;
if (size != 0)
return *p->cur++;;
}
p->extra = True;
return 0;
}
static SRes SzDecodePpmd(CSzCoderInfo *coder, UInt64 inSize, ILookInStream *inStream,
Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain)
{
CPpmd7 ppmd;
CByteInToLook s;
SRes res = SZ_OK;
s.p.Read = ReadByte;
s.inStream = inStream;
s.begin = s.end = s.cur = NULL;
s.extra = False;
s.res = SZ_OK;
s.processed = 0;
if (coder->Props.size != 5)
return SZ_ERROR_UNSUPPORTED;
{
unsigned order = coder->Props.data[0];
UInt32 memSize = GetUi32(coder->Props.data + 1);
if (order < PPMD7_MIN_ORDER ||
order > PPMD7_MAX_ORDER ||
memSize < PPMD7_MIN_MEM_SIZE ||
memSize > PPMD7_MAX_MEM_SIZE)
return SZ_ERROR_UNSUPPORTED;
Ppmd7_Construct(&ppmd);
if (!Ppmd7_Alloc(&ppmd, memSize, allocMain))
return SZ_ERROR_MEM;
Ppmd7_Init(&ppmd, order);
}
{
CPpmd7z_RangeDec rc;
Ppmd7z_RangeDec_CreateVTable(&rc);
rc.Stream = &s.p;
if (!Ppmd7z_RangeDec_Init(&rc))
res = SZ_ERROR_DATA;
else if (s.extra)
res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA);
else
{
SizeT i;
for (i = 0; i < outSize; i++)
{
int sym = Ppmd7_DecodeSymbol(&ppmd, &rc.p);
if (s.extra || sym < 0)
break;
outBuffer[i] = (Byte)sym;
}
if (i != outSize)
res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA);
else if (s.processed + (s.cur - s.begin) != inSize || !Ppmd7z_RangeDec_IsFinishedOK(&rc))
res = SZ_ERROR_DATA;
}
}
Ppmd7_Free(&ppmd, allocMain);
return res;
}
#endif
static SRes SzDecodeLzma(CSzCoderInfo *coder, UInt64 inSize, ILookInStream *inStream,
Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain)
{
CLzmaDec state;
SRes res = SZ_OK;
LzmaDec_Construct(&state);
RINOK(LzmaDec_AllocateProbs(&state, coder->Props.data, (unsigned)coder->Props.size, allocMain));
state.dic = outBuffer;
state.dicBufSize = outSize;
LzmaDec_Init(&state);
for (;;)
{
Byte *inBuf = NULL;
size_t lookahead = (1 << 18);
if (lookahead > inSize)
lookahead = (size_t)inSize;
res = inStream->Look((void *)inStream, (const void **)&inBuf, &lookahead);
if (res != SZ_OK)
break;
{
SizeT inProcessed = (SizeT)lookahead, dicPos = state.dicPos;
ELzmaStatus status;
res = LzmaDec_DecodeToDic(&state, outSize, inBuf, &inProcessed, LZMA_FINISH_END, &status);
lookahead -= inProcessed;
inSize -= inProcessed;
if (res != SZ_OK)
break;
if (state.dicPos == state.dicBufSize || (inProcessed == 0 && dicPos == state.dicPos))
{
if (state.dicBufSize != outSize || lookahead != 0 ||
(status != LZMA_STATUS_FINISHED_WITH_MARK &&
status != LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK))
res = SZ_ERROR_DATA;
break;
}
res = inStream->Skip((void *)inStream, inProcessed);
if (res != SZ_OK)
break;
}
}
LzmaDec_FreeProbs(&state, allocMain);
return res;
}
static SRes SzDecodeLzma2(CSzCoderInfo *coder, UInt64 inSize, ILookInStream *inStream,
Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain)
{
CLzma2Dec state;
SRes res = SZ_OK;
Lzma2Dec_Construct(&state);
if (coder->Props.size != 1)
return SZ_ERROR_DATA;
RINOK(Lzma2Dec_AllocateProbs(&state, coder->Props.data[0], allocMain));
state.decoder.dic = outBuffer;
state.decoder.dicBufSize = outSize;
Lzma2Dec_Init(&state);
for (;;)
{
Byte *inBuf = NULL;
size_t lookahead = (1 << 18);
if (lookahead > inSize)
lookahead = (size_t)inSize;
res = inStream->Look((void *)inStream, (const void **)&inBuf, &lookahead);
if (res != SZ_OK)
break;
{
SizeT inProcessed = (SizeT)lookahead, dicPos = state.decoder.dicPos;
ELzmaStatus status;
res = Lzma2Dec_DecodeToDic(&state, outSize, inBuf, &inProcessed, LZMA_FINISH_END, &status);
lookahead -= inProcessed;
inSize -= inProcessed;
if (res != SZ_OK)
break;
if (state.decoder.dicPos == state.decoder.dicBufSize || (inProcessed == 0 && dicPos == state.decoder.dicPos))
{
if (state.decoder.dicBufSize != outSize || lookahead != 0 ||
(status != LZMA_STATUS_FINISHED_WITH_MARK))
res = SZ_ERROR_DATA;
break;
}
res = inStream->Skip((void *)inStream, inProcessed);
if (res != SZ_OK)
break;
}
}
Lzma2Dec_FreeProbs(&state, allocMain);
return res;
}
static SRes SzDecodeCopy(UInt64 inSize, ILookInStream *inStream, Byte *outBuffer)
{
while (inSize > 0)
{
void *inBuf;
size_t curSize = (1 << 18);
if (curSize > inSize)
curSize = (size_t)inSize;
RINOK(inStream->Look((void *)inStream, (const void **)&inBuf, &curSize));
if (curSize == 0)
return SZ_ERROR_INPUT_EOF;
memcpy(outBuffer, inBuf, curSize);
outBuffer += curSize;
inSize -= curSize;
RINOK(inStream->Skip((void *)inStream, curSize));
}
return SZ_OK;
}
static Bool IS_MAIN_METHOD(UInt32 m)
{
switch(m)
{
case k_Copy:
case k_LZMA:
case k_LZMA2:
#ifdef _7ZIP_PPMD_SUPPPORT
case k_PPMD:
#endif
return True;
}
return False;
}
static Bool IS_SUPPORTED_CODER(const CSzCoderInfo *c)
{
return
c->NumInStreams == 1 &&
c->NumOutStreams == 1 &&
c->MethodID <= (UInt32)0xFFFFFFFF &&
IS_MAIN_METHOD((UInt32)c->MethodID);
}
#define IS_BCJ2(c) ((c)->MethodID == k_BCJ2 && (c)->NumInStreams == 4 && (c)->NumOutStreams == 1)
static SRes CheckSupportedFolder(const CSzFolder *f)
{
if (f->NumCoders < 1 || f->NumCoders > 4)
return SZ_ERROR_UNSUPPORTED;
if (!IS_SUPPORTED_CODER(&f->Coders[0]))
return SZ_ERROR_UNSUPPORTED;
if (f->NumCoders == 1)
{
if (f->NumPackStreams != 1 || f->PackStreams[0] != 0 || f->NumBindPairs != 0)
return SZ_ERROR_UNSUPPORTED;
return SZ_OK;
}
if (f->NumCoders == 2)
{
CSzCoderInfo *c = &f->Coders[1];
if (c->MethodID > (UInt32)0xFFFFFFFF ||
c->NumInStreams != 1 ||
c->NumOutStreams != 1 ||
f->NumPackStreams != 1 ||
f->PackStreams[0] != 0 ||
f->NumBindPairs != 1 ||
f->BindPairs[0].InIndex != 1 ||
f->BindPairs[0].OutIndex != 0)
return SZ_ERROR_UNSUPPORTED;
switch ((UInt32)c->MethodID)
{
case k_BCJ:
case k_ARM:
break;
default:
return SZ_ERROR_UNSUPPORTED;
}
return SZ_OK;
}
if (f->NumCoders == 4)
{
if (!IS_SUPPORTED_CODER(&f->Coders[1]) ||
!IS_SUPPORTED_CODER(&f->Coders[2]) ||
!IS_BCJ2(&f->Coders[3]))
return SZ_ERROR_UNSUPPORTED;
if (f->NumPackStreams != 4 ||
f->PackStreams[0] != 2 ||
f->PackStreams[1] != 6 ||
f->PackStreams[2] != 1 ||
f->PackStreams[3] != 0 ||
f->NumBindPairs != 3 ||
f->BindPairs[0].InIndex != 5 || f->BindPairs[0].OutIndex != 0 ||
f->BindPairs[1].InIndex != 4 || f->BindPairs[1].OutIndex != 1 ||
f->BindPairs[2].InIndex != 3 || f->BindPairs[2].OutIndex != 2)
return SZ_ERROR_UNSUPPORTED;
return SZ_OK;
}
return SZ_ERROR_UNSUPPORTED;
}
static UInt64 GetSum(const UInt64 *values, UInt32 index)
{
UInt64 sum = 0;
UInt32 i;
for (i = 0; i < index; i++)
sum += values[i];
return sum;
}
#define CASE_BRA_CONV(isa) case k_ ## isa: isa ## _Convert(outBuffer, outSize, 0, 0); break;
static SRes SzFolder_Decode2(const CSzFolder *folder, const UInt64 *packSizes,
ILookInStream *inStream, UInt64 startPos,
Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain,
Byte *tempBuf[])
{
UInt32 ci;
SizeT tempSizes[3] = { 0, 0, 0};
SizeT tempSize3 = 0;
Byte *tempBuf3 = 0;
RINOK(CheckSupportedFolder(folder));
for (ci = 0; ci < folder->NumCoders; ci++)
{
CSzCoderInfo *coder = &folder->Coders[ci];
if (IS_MAIN_METHOD((UInt32)coder->MethodID))
{
UInt32 si = 0;
UInt64 offset;
UInt64 inSize;
Byte *outBufCur = outBuffer;
SizeT outSizeCur = outSize;
if (folder->NumCoders == 4)
{
UInt32 indices[] = { 3, 2, 0 };
UInt64 unpackSize = folder->UnpackSizes[ci];
si = indices[ci];
if (ci < 2)
{
Byte *temp;
outSizeCur = (SizeT)unpackSize;
if (outSizeCur != unpackSize)
return SZ_ERROR_MEM;
temp = (Byte *)IAlloc_Alloc(allocMain, outSizeCur);
if (temp == 0 && outSizeCur != 0)
return SZ_ERROR_MEM;
outBufCur = tempBuf[1 - ci] = temp;
tempSizes[1 - ci] = outSizeCur;
}
else if (ci == 2)
{
if (unpackSize > outSize) /* check it */
return SZ_ERROR_PARAM;
tempBuf3 = outBufCur = outBuffer + (outSize - (size_t)unpackSize);
tempSize3 = outSizeCur = (SizeT)unpackSize;
}
else
return SZ_ERROR_UNSUPPORTED;
}
offset = GetSum(packSizes, si);
inSize = packSizes[si];
RINOK(LookInStream_SeekTo(inStream, startPos + offset));
if (coder->MethodID == k_Copy)
{
if (inSize != outSizeCur) /* check it */
return SZ_ERROR_DATA;
RINOK(SzDecodeCopy(inSize, inStream, outBufCur));
}
else if (coder->MethodID == k_LZMA)
{
RINOK(SzDecodeLzma(coder, inSize, inStream, outBufCur, outSizeCur, allocMain));
}
else if (coder->MethodID == k_LZMA2)
{
RINOK(SzDecodeLzma2(coder, inSize, inStream, outBufCur, outSizeCur, allocMain));
}
else
{
#ifdef _7ZIP_PPMD_SUPPPORT
RINOK(SzDecodePpmd(coder, inSize, inStream, outBufCur, outSizeCur, allocMain));
#else
return SZ_ERROR_UNSUPPORTED;
#endif
}
}
else if (coder->MethodID == k_BCJ2)
{
UInt64 offset = GetSum(packSizes, 1);
UInt64 s3Size = packSizes[1];
SRes res;
if (ci != 3)
return SZ_ERROR_UNSUPPORTED;
RINOK(LookInStream_SeekTo(inStream, startPos + offset));
tempSizes[2] = (SizeT)s3Size;
if (tempSizes[2] != s3Size)
return SZ_ERROR_MEM;
tempBuf[2] = (Byte *)IAlloc_Alloc(allocMain, tempSizes[2]);
if (tempBuf[2] == 0 && tempSizes[2] != 0)
return SZ_ERROR_MEM;
res = SzDecodeCopy(s3Size, inStream, tempBuf[2]);
RINOK(res)
res = Bcj2_Decode(
tempBuf3, tempSize3,
tempBuf[0], tempSizes[0],
tempBuf[1], tempSizes[1],
tempBuf[2], tempSizes[2],
outBuffer, outSize);
RINOK(res)
}
else
{
if (ci != 1)
return SZ_ERROR_UNSUPPORTED;
switch(coder->MethodID)
{
case k_BCJ:
{
UInt32 state;
x86_Convert_Init(state);
x86_Convert(outBuffer, outSize, 0, &state, 0);
break;
}
CASE_BRA_CONV(ARM)
default:
return SZ_ERROR_UNSUPPORTED;
}
}
}
return SZ_OK;
}
SRes SzFolder_Decode(const CSzFolder *folder, const UInt64 *packSizes,
ILookInStream *inStream, UInt64 startPos,
Byte *outBuffer, size_t outSize, ISzAlloc *allocMain)
{
Byte *tempBuf[3] = { 0, 0, 0};
int i;
SRes res = SzFolder_Decode2(folder, packSizes, inStream, startPos,
outBuffer, (SizeT)outSize, allocMain, tempBuf);
for (i = 0; i < 3; i++)
IAlloc_Free(allocMain, tempBuf[i]);
return res;
}

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@ -1,13 +0,0 @@
/* 7zDecode.h -- Decoding from 7z folder
2008-11-23 : Igor Pavlov : Public domain */
#ifndef __7Z_DECODE_H
#define __7Z_DECODE_H
#include "7zItem.h"
SRes SzDecode(const UInt64 *packSizes, const CSzFolder *folder,
ILookInStream *stream, UInt64 startPos,
Byte *outBuffer, size_t outSize, ISzAlloc *allocMain);
#endif

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/* 7zExtract.c -- Extracting from 7z archive
2008-11-23 : Igor Pavlov : Public domain */
#include "7zCrc.h"
#include "7zDecode.h"
#include "7zExtract.h"
SRes SzAr_Extract(
const CSzArEx *p,
ILookInStream *inStream,
UInt32 fileIndex,
UInt32 *blockIndex,
Byte **outBuffer,
size_t *outBufferSize,
size_t *offset,
size_t *outSizeProcessed,
ISzAlloc *allocMain,
ISzAlloc *allocTemp)
{
UInt32 folderIndex = p->FileIndexToFolderIndexMap[fileIndex];
SRes res = SZ_OK;
*offset = 0;
*outSizeProcessed = 0;
if (folderIndex == (UInt32)-1)
{
IAlloc_Free(allocMain, *outBuffer);
*blockIndex = folderIndex;
*outBuffer = 0;
*outBufferSize = 0;
return SZ_OK;
}
if (*outBuffer == 0 || *blockIndex != folderIndex)
{
CSzFolder *folder = p->db.Folders + folderIndex;
UInt64 unpackSizeSpec = SzFolder_GetUnpackSize(folder);
size_t unpackSize = (size_t)unpackSizeSpec;
UInt64 startOffset = SzArEx_GetFolderStreamPos(p, folderIndex, 0);
if (unpackSize != unpackSizeSpec)
return SZ_ERROR_MEM;
*blockIndex = folderIndex;
IAlloc_Free(allocMain, *outBuffer);
*outBuffer = 0;
RINOK(LookInStream_SeekTo(inStream, startOffset));
if (res == SZ_OK)
{
*outBufferSize = unpackSize;
if (unpackSize != 0)
{
*outBuffer = (Byte *)IAlloc_Alloc(allocMain, unpackSize);
if (*outBuffer == 0)
res = SZ_ERROR_MEM;
}
if (res == SZ_OK)
{
res = SzDecode(p->db.PackSizes +
p->FolderStartPackStreamIndex[folderIndex], folder,
inStream, startOffset,
*outBuffer, unpackSize, allocTemp);
if (res == SZ_OK)
{
if (folder->UnpackCRCDefined)
{
if (CrcCalc(*outBuffer, unpackSize) != folder->UnpackCRC)
res = SZ_ERROR_CRC;
}
}
}
}
}
if (res == SZ_OK)
{
UInt32 i;
CSzFileItem *fileItem = p->db.Files + fileIndex;
*offset = 0;
for (i = p->FolderStartFileIndex[folderIndex]; i < fileIndex; i++)
*offset += (UInt32)p->db.Files[i].Size;
*outSizeProcessed = (size_t)fileItem->Size;
if (*offset + *outSizeProcessed > *outBufferSize)
return SZ_ERROR_FAIL;
{
if (fileItem->FileCRCDefined)
{
if (CrcCalc(*outBuffer + *offset, *outSizeProcessed) != fileItem->FileCRC)
res = SZ_ERROR_CRC;
}
}
}
return res;
}

49
fex/7z_C/7zExtract.h
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/* 7zExtract.h -- Extracting from 7z archive
2008-11-23 : Igor Pavlov : Public domain */
#ifndef __7Z_EXTRACT_H
#define __7Z_EXTRACT_H
#include "7zIn.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
SzExtract extracts file from archive
*outBuffer must be 0 before first call for each new archive.
Extracting cache:
If you need to decompress more than one file, you can send
these values from previous call:
*blockIndex,
*outBuffer,
*outBufferSize
You can consider "*outBuffer" as cache of solid block. If your archive is solid,
it will increase decompression speed.
If you use external function, you can declare these 3 cache variables
(blockIndex, outBuffer, outBufferSize) as static in that external function.
Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
*/
SRes SzAr_Extract(
const CSzArEx *db,
ILookInStream *inStream,
UInt32 fileIndex, /* index of file */
UInt32 *blockIndex, /* index of solid block */
Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
size_t *outBufferSize, /* buffer size for output buffer */
size_t *offset, /* offset of stream for required file in *outBuffer */
size_t *outSizeProcessed, /* size of file in *outBuffer */
ISzAlloc *allocMain,
ISzAlloc *allocTemp);
#ifdef __cplusplus
}
#endif
#endif

6
fex/7z_C/7zHeader.c
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@ -1,6 +0,0 @@
/* 7zHeader.c -- 7z Headers
2008-10-04 : Igor Pavlov : Public domain */
#include "7zHeader.h"
Byte k7zSignature[k7zSignatureSize] = {'7', 'z', 0xBC, 0xAF, 0x27, 0x1C};

57
fex/7z_C/7zHeader.h
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@ -1,57 +0,0 @@
/* 7zHeader.h -- 7z Headers
2008-10-04 : Igor Pavlov : Public domain */
#ifndef __7Z_HEADER_H
#define __7Z_HEADER_H
#include "Types.h"
#define k7zSignatureSize 6
extern Byte k7zSignature[k7zSignatureSize];
#define k7zMajorVersion 0
#define k7zStartHeaderSize 0x20
enum EIdEnum
{
k7zIdEnd,
k7zIdHeader,
k7zIdArchiveProperties,
k7zIdAdditionalStreamsInfo,
k7zIdMainStreamsInfo,
k7zIdFilesInfo,
k7zIdPackInfo,
k7zIdUnpackInfo,
k7zIdSubStreamsInfo,
k7zIdSize,
k7zIdCRC,
k7zIdFolder,
k7zIdCodersUnpackSize,
k7zIdNumUnpackStream,
k7zIdEmptyStream,
k7zIdEmptyFile,
k7zIdAnti,
k7zIdName,
k7zIdCTime,
k7zIdATime,
k7zIdMTime,
k7zIdWinAttributes,
k7zIdComment,
k7zIdEncodedHeader,
k7zIdStartPos,
k7zIdDummy
};
#endif

1402
fex/7z_C/7zIn.c
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49
fex/7z_C/7zIn.h
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/* 7zIn.h -- 7z Input functions
2008-11-23 : Igor Pavlov : Public domain */
#ifndef __7Z_IN_H
#define __7Z_IN_H
#include "7zHeader.h"
#include "7zItem.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct
{
CSzAr db;
UInt64 startPosAfterHeader;
UInt64 dataPos;
UInt32 *FolderStartPackStreamIndex;
UInt64 *PackStreamStartPositions;
UInt32 *FolderStartFileIndex;
UInt32 *FileIndexToFolderIndexMap;
} CSzArEx;
void SzArEx_Init(CSzArEx *p);
void SzArEx_Free(CSzArEx *p, ISzAlloc *alloc);
UInt64 SzArEx_GetFolderStreamPos(const CSzArEx *p, UInt32 folderIndex, UInt32 indexInFolder);
int SzArEx_GetFolderFullPackSize(const CSzArEx *p, UInt32 folderIndex, UInt64 *resSize);
/*
Errors:
SZ_ERROR_NO_ARCHIVE
SZ_ERROR_ARCHIVE
SZ_ERROR_UNSUPPORTED
SZ_ERROR_MEM
SZ_ERROR_CRC
SZ_ERROR_INPUT_EOF
SZ_ERROR_FAIL
*/
SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream, ISzAlloc *allocMain, ISzAlloc *allocTemp);
#ifdef __cplusplus
}
#endif
#endif

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/* 7zItem.c -- 7z Items
2008-10-04 : Igor Pavlov : Public domain */
#include "7zItem.h"
void SzCoderInfo_Init(CSzCoderInfo *p)
{
Buf_Init(&p->Props);
}
void SzCoderInfo_Free(CSzCoderInfo *p, ISzAlloc *alloc)
{
Buf_Free(&p->Props, alloc);
SzCoderInfo_Init(p);
}
void SzFolder_Init(CSzFolder *p)
{
p->Coders = 0;
p->BindPairs = 0;
p->PackStreams = 0;
p->UnpackSizes = 0;
p->NumCoders = 0;
p->NumBindPairs = 0;
p->NumPackStreams = 0;
p->UnpackCRCDefined = 0;
p->UnpackCRC = 0;
p->NumUnpackStreams = 0;
}
static
void SzFolder_Free(CSzFolder *p, ISzAlloc *alloc)
{
UInt32 i;
if (p->Coders)
for (i = 0; i < p->NumCoders; i++)
SzCoderInfo_Free(&p->Coders[i], alloc);
IAlloc_Free(alloc, p->Coders);
IAlloc_Free(alloc, p->BindPairs);
IAlloc_Free(alloc, p->PackStreams);
IAlloc_Free(alloc, p->UnpackSizes);
SzFolder_Init(p);
}
UInt32 SzFolder_GetNumOutStreams(CSzFolder *p)
{
UInt32 result = 0;
UInt32 i;
for (i = 0; i < p->NumCoders; i++)
result += p->Coders[i].NumOutStreams;
return result;
}
int SzFolder_FindBindPairForInStream(CSzFolder *p, UInt32 inStreamIndex)
{
UInt32 i;
for (i = 0; i < p->NumBindPairs; i++)
if (p->BindPairs[i].InIndex == inStreamIndex)
return i;
return -1;
}
static
int SzFolder_FindBindPairForOutStream(CSzFolder *p, UInt32 outStreamIndex)
{
UInt32 i;
for (i = 0; i < p->NumBindPairs; i++)
if (p->BindPairs[i].OutIndex == outStreamIndex)
return i;
return -1;
}
UInt64 SzFolder_GetUnpackSize(CSzFolder *p)
{
int i = (int)SzFolder_GetNumOutStreams(p);
if (i == 0)
return 0;
for (i--; i >= 0; i--)
if (SzFolder_FindBindPairForOutStream(p, i) < 0)
return p->UnpackSizes[i];
/* throw 1; */
return 0;
}
void SzFile_Init(CSzFileItem *p)
{
p->HasStream = 1;
p->IsDir = 0;
p->IsAnti = 0;
p->FileCRCDefined = 0;
p->MTimeDefined = 0;
p->Name = 0;
}
static void SzFile_Free(CSzFileItem *p, ISzAlloc *alloc)
{
IAlloc_Free(alloc, p->Name);
SzFile_Init(p);
}
void SzAr_Init(CSzAr *p)
{
p->PackSizes = 0;
p->PackCRCsDefined = 0;
p->PackCRCs = 0;
p->Folders = 0;
p->Files = 0;
p->NumPackStreams = 0;
p->NumFolders = 0;
p->NumFiles = 0;
}
void SzAr_Free(CSzAr *p, ISzAlloc *alloc)
{
UInt32 i;
if (p->Folders)
for (i = 0; i < p->NumFolders; i++)
SzFolder_Free(&p->Folders[i], alloc);
if (p->Files)
for (i = 0; i < p->NumFiles; i++)
SzFile_Free(&p->Files[i], alloc);
IAlloc_Free(alloc, p->PackSizes);
IAlloc_Free(alloc, p->PackCRCsDefined);
IAlloc_Free(alloc, p->PackCRCs);
IAlloc_Free(alloc, p->Folders);
IAlloc_Free(alloc, p->Files);
SzAr_Init(p);
}

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/* 7zItem.h -- 7z Items
2008-10-04 : Igor Pavlov : Public domain */
#ifndef __7Z_ITEM_H
#define __7Z_ITEM_H
#include "7zBuf.h"
typedef struct
{
UInt32 NumInStreams;
UInt32 NumOutStreams;
UInt64 MethodID;
CBuf Props;
} CSzCoderInfo;
void SzCoderInfo_Init(CSzCoderInfo *p);
void SzCoderInfo_Free(CSzCoderInfo *p, ISzAlloc *alloc);
typedef struct
{
UInt32 InIndex;
UInt32 OutIndex;
} CBindPair;
typedef struct
{
CSzCoderInfo *Coders;
CBindPair *BindPairs;
UInt32 *PackStreams;
UInt64 *UnpackSizes;
UInt32 NumCoders;
UInt32 NumBindPairs;
UInt32 NumPackStreams;
int UnpackCRCDefined;
UInt32 UnpackCRC;
UInt32 NumUnpackStreams;
} CSzFolder;
void SzFolder_Init(CSzFolder *p);
UInt64 SzFolder_GetUnpackSize(CSzFolder *p);
int SzFolder_FindBindPairForInStream(CSzFolder *p, UInt32 inStreamIndex);
UInt32 SzFolder_GetNumOutStreams(CSzFolder *p);
typedef struct
{
UInt32 Low;
UInt32 High;
} CNtfsFileTime;
typedef struct
{
CNtfsFileTime MTime;
UInt64 Size;
char *Name;
UInt32 FileCRC;
Byte HasStream;
Byte IsDir;
Byte IsAnti;
Byte FileCRCDefined;
Byte MTimeDefined;
} CSzFileItem;
void SzFile_Init(CSzFileItem *p);
typedef struct
{
UInt64 *PackSizes;
Byte *PackCRCsDefined;
UInt32 *PackCRCs;
CSzFolder *Folders;
CSzFileItem *Files;
UInt32 NumPackStreams;
UInt32 NumFolders;
UInt32 NumFiles;
} CSzAr;
void SzAr_Init(CSzAr *p);
void SzAr_Free(CSzAr *p, ISzAlloc *alloc);
#endif

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/* 7zStream.c -- 7z Stream functions
2010-03-11 : Igor Pavlov : Public domain */
#include <string.h>
#include "Types.h"
SRes SeqInStream_Read2(ISeqInStream *stream, void *buf, size_t size, SRes errorType)
{
while (size != 0)
{
size_t processed = size;
RINOK(stream->Read(stream, buf, &processed));
if (processed == 0)
return errorType;
buf = (void *)((Byte *)buf + processed);
size -= processed;
}
return SZ_OK;
}
SRes SeqInStream_Read(ISeqInStream *stream, void *buf, size_t size)
{
return SeqInStream_Read2(stream, buf, size, SZ_ERROR_INPUT_EOF);
}
SRes SeqInStream_ReadByte(ISeqInStream *stream, Byte *buf)
{
size_t processed = 1;
RINOK(stream->Read(stream, buf, &processed));
return (processed == 1) ? SZ_OK : SZ_ERROR_INPUT_EOF;
}
SRes LookInStream_SeekTo(ILookInStream *stream, UInt64 offset)
{
Int64 t = offset;
return stream->Seek(stream, &t, SZ_SEEK_SET);
}
SRes LookInStream_LookRead(ILookInStream *stream, void *buf, size_t *size)
{
const void *lookBuf;
if (*size == 0)
return SZ_OK;
RINOK(stream->Look(stream, &lookBuf, size));
memcpy(buf, lookBuf, *size);
return stream->Skip(stream, *size);
}
SRes LookInStream_Read2(ILookInStream *stream, void *buf, size_t size, SRes errorType)
{
while (size != 0)
{
size_t processed = size;
RINOK(stream->Read(stream, buf, &processed));
if (processed == 0)
return errorType;
buf = (void *)((Byte *)buf + processed);
size -= processed;
}
return SZ_OK;
}
SRes LookInStream_Read(ILookInStream *stream, void *buf, size_t size)
{
return LookInStream_Read2(stream, buf, size, SZ_ERROR_INPUT_EOF);
}
static SRes LookToRead_Look_Lookahead(void *pp, const void **buf, size_t *size)
{
SRes res = SZ_OK;
CLookToRead *p = (CLookToRead *)pp;
size_t size2 = p->size - p->pos;
if (size2 == 0 && *size > 0)
{
p->pos = 0;
size2 = LookToRead_BUF_SIZE;
res = p->realStream->Read(p->realStream, p->buf, &size2);
p->size = size2;
}
if (size2 < *size)
*size = size2;
*buf = p->buf + p->pos;
return res;
}
static SRes LookToRead_Look_Exact(void *pp, const void **buf, size_t *size)
{
SRes res = SZ_OK;
CLookToRead *p = (CLookToRead *)pp;
size_t size2 = p->size - p->pos;
if (size2 == 0 && *size > 0)
{
p->pos = 0;
if (*size > LookToRead_BUF_SIZE)
*size = LookToRead_BUF_SIZE;
res = p->realStream->Read(p->realStream, p->buf, size);
size2 = p->size = *size;
}
if (size2 < *size)
*size = size2;
*buf = p->buf + p->pos;
return res;
}
static SRes LookToRead_Skip(void *pp, size_t offset)
{
CLookToRead *p = (CLookToRead *)pp;
p->pos += offset;
return SZ_OK;
}
static SRes LookToRead_Read(void *pp, void *buf, size_t *size)
{
CLookToRead *p = (CLookToRead *)pp;
size_t rem = p->size - p->pos;
if (rem == 0)
return p->realStream->Read(p->realStream, buf, size);
if (rem > *size)
rem = *size;
memcpy(buf, p->buf + p->pos, rem);
p->pos += rem;
*size = rem;
return SZ_OK;
}
static SRes LookToRead_Seek(void *pp, Int64 *pos, ESzSeek origin)
{
CLookToRead *p = (CLookToRead *)pp;
p->pos = p->size = 0;
return p->realStream->Seek(p->realStream, pos, origin);
}
void LookToRead_CreateVTable(CLookToRead *p, int lookahead)
{
p->s.Look = lookahead ?
LookToRead_Look_Lookahead :
LookToRead_Look_Exact;
p->s.Skip = LookToRead_Skip;
p->s.Read = LookToRead_Read;
p->s.Seek = LookToRead_Seek;
}
void LookToRead_Init(CLookToRead *p)
{
p->pos = p->size = 0;
}
static SRes SecToLook_Read(void *pp, void *buf, size_t *size)
{
CSecToLook *p = (CSecToLook *)pp;
return LookInStream_LookRead(p->realStream, buf, size);
}
void SecToLook_CreateVTable(CSecToLook *p)
{
p->s.Read = SecToLook_Read;
}
static SRes SecToRead_Read(void *pp, void *buf, size_t *size)
{
CSecToRead *p = (CSecToRead *)pp;
return p->realStream->Read(p->realStream, buf, size);
}
void SecToRead_CreateVTable(CSecToRead *p)
{
p->s.Read = SecToRead_Read;
}

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/* Bcj2.c -- Converter for x86 code (BCJ2)
2008-10-04 : Igor Pavlov : Public domain */
#include "Bcj2.h"
#ifdef _LZMA_PROB32
#define CProb UInt32
#else
#define CProb UInt16
#endif
#define IsJcc(b0, b1) ((b0) == 0x0F && ((b1) & 0xF0) == 0x80)
#define IsJ(b0, b1) ((b1 & 0xFE) == 0xE8 || IsJcc(b0, b1))
#define kNumTopBits 24
#define kTopValue ((UInt32)1 << kNumTopBits)
#define kNumBitModelTotalBits 11
#define kBitModelTotal (1 << kNumBitModelTotalBits)
#define kNumMoveBits 5
#define RC_READ_BYTE (*buffer++)
#define RC_TEST { if (buffer == bufferLim) return SZ_ERROR_DATA; }
#define RC_INIT2 code = 0; range = 0xFFFFFFFF; \
{ int i; for (i = 0; i < 5; i++) { RC_TEST; code = (code << 8) | RC_READ_BYTE; }}
#define NORMALIZE if (range < kTopValue) { RC_TEST; range <<= 8; code = (code << 8) | RC_READ_BYTE; }
#define IF_BIT_0(p) ttt = *(p); bound = (range >> kNumBitModelTotalBits) * ttt; if (code < bound)
#define UPDATE_0(p) range = bound; *(p) = (CProb)(ttt + ((kBitModelTotal - ttt) >> kNumMoveBits)); NORMALIZE;
#define UPDATE_1(p) range -= bound; code -= bound; *(p) = (CProb)(ttt - (ttt >> kNumMoveBits)); NORMALIZE;
int Bcj2_Decode(
const Byte *buf0, SizeT size0,
const Byte *buf1, SizeT size1,
const Byte *buf2, SizeT size2,
const Byte *buf3, SizeT size3,
Byte *outBuf, SizeT outSize)
{
CProb p[256 + 2];
SizeT inPos = 0, outPos = 0;
const Byte *buffer, *bufferLim;
UInt32 range, code;
Byte prevByte = 0;
unsigned int i;
for (i = 0; i < sizeof(p) / sizeof(p[0]); i++)
p[i] = kBitModelTotal >> 1;
buffer = buf3;
bufferLim = buffer + size3;
RC_INIT2
if (outSize == 0)
return SZ_OK;
for (;;)
{
Byte b;
CProb *prob;
UInt32 bound;
UInt32 ttt;
SizeT limit = size0 - inPos;
if (outSize - outPos < limit)
limit = outSize - outPos;
while (limit != 0)
{
Byte b = buf0[inPos];
outBuf[outPos++] = b;
if (IsJ(prevByte, b))
break;
inPos++;
prevByte = b;
limit--;
}
if (limit == 0 || outPos == outSize)
break;
b = buf0[inPos++];
if (b == 0xE8)
prob = p + prevByte;
else if (b == 0xE9)
prob = p + 256;
else
prob = p + 257;
IF_BIT_0(prob)
{
UPDATE_0(prob)
prevByte = b;
}
else
{
UInt32 dest;
const Byte *v;
UPDATE_1(prob)
if (b == 0xE8)
{
v = buf1;
if (size1 < 4)
return SZ_ERROR_DATA;
buf1 += 4;
size1 -= 4;
}
else
{
v = buf2;
if (size2 < 4)
return SZ_ERROR_DATA;
buf2 += 4;
size2 -= 4;
}
dest = (((UInt32)v[0] << 24) | ((UInt32)v[1] << 16) |
((UInt32)v[2] << 8) | ((UInt32)v[3])) - ((UInt32)outPos + 4);
outBuf[outPos++] = (Byte)dest;
if (outPos == outSize)
break;
outBuf[outPos++] = (Byte)(dest >> 8);
if (outPos == outSize)
break;
outBuf[outPos++] = (Byte)(dest >> 16);
if (outPos == outSize)
break;
outBuf[outPos++] = prevByte = (Byte)(dest >> 24);
}
}
return (outPos == outSize) ? SZ_OK : SZ_ERROR_DATA;
}

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/* Bcj2.h -- Converter for x86 code (BCJ2)
2009-02-07 : Igor Pavlov : Public domain */
#ifndef __BCJ2_H
#define __BCJ2_H
#include "Types.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
Conditions:
outSize <= FullOutputSize,
where FullOutputSize is full size of output stream of x86_2 filter.
If buf0 overlaps outBuf, there are two required conditions:
1) (buf0 >= outBuf)
2) (buf0 + size0 >= outBuf + FullOutputSize).
Returns:
SZ_OK
SZ_ERROR_DATA - Data error
*/
int Bcj2_Decode(
const Byte *buf0, SizeT size0,
const Byte *buf1, SizeT size1,
const Byte *buf2, SizeT size2,
const Byte *buf3, SizeT size3,
Byte *outBuf, SizeT outSize);
#ifdef __cplusplus
}
#endif
#endif

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/* Bra.c -- Converters for RISC code
2010-04-16 : Igor Pavlov : Public domain */
#include "Bra.h"
SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
{
SizeT i;
if (size < 4)
return 0;
size -= 4;
ip += 8;
for (i = 0; i <= size; i += 4)
{
if (data[i + 3] == 0xEB)
{
UInt32 dest;
UInt32 src = ((UInt32)data[i + 2] << 16) | ((UInt32)data[i + 1] << 8) | (data[i + 0]);
src <<= 2;
if (encoding)
dest = ip + (UInt32)i + src;
else
dest = src - (ip + (UInt32)i);
dest >>= 2;
data[i + 2] = (Byte)(dest >> 16);
data[i + 1] = (Byte)(dest >> 8);
data[i + 0] = (Byte)dest;
}
}
return i;
}
SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
{
SizeT i;
if (size < 4)
return 0;
size -= 4;
ip += 4;
for (i = 0; i <= size; i += 2)
{
if ((data[i + 1] & 0xF8) == 0xF0 &&
(data[i + 3] & 0xF8) == 0xF8)
{
UInt32 dest;
UInt32 src =
(((UInt32)data[i + 1] & 0x7) << 19) |
((UInt32)data[i + 0] << 11) |
(((UInt32)data[i + 3] & 0x7) << 8) |
(data[i + 2]);
src <<= 1;
if (encoding)
dest = ip + (UInt32)i + src;
else
dest = src - (ip + (UInt32)i);
dest >>= 1;
data[i + 1] = (Byte)(0xF0 | ((dest >> 19) & 0x7));
data[i + 0] = (Byte)(dest >> 11);
data[i + 3] = (Byte)(0xF8 | ((dest >> 8) & 0x7));
data[i + 2] = (Byte)dest;
i += 2;
}
}
return i;
}
SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
{
SizeT i;
if (size < 4)
return 0;
size -= 4;
for (i = 0; i <= size; i += 4)
{
if ((data[i] >> 2) == 0x12 && (data[i + 3] & 3) == 1)
{
UInt32 src = ((UInt32)(data[i + 0] & 3) << 24) |
((UInt32)data[i + 1] << 16) |
((UInt32)data[i + 2] << 8) |
((UInt32)data[i + 3] & (~3));
UInt32 dest;
if (encoding)
dest = ip + (UInt32)i + src;
else
dest = src - (ip + (UInt32)i);
data[i + 0] = (Byte)(0x48 | ((dest >> 24) & 0x3));
data[i + 1] = (Byte)(dest >> 16);
data[i + 2] = (Byte)(dest >> 8);
data[i + 3] &= 0x3;
data[i + 3] |= dest;
}
}
return i;
}
SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
{
UInt32 i;
if (size < 4)
return 0;
size -= 4;
for (i = 0; i <= size; i += 4)
{
if ((data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00) ||
(data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0))
{
UInt32 src =
((UInt32)data[i + 0] << 24) |
((UInt32)data[i + 1] << 16) |
((UInt32)data[i + 2] << 8) |
((UInt32)data[i + 3]);
UInt32 dest;
src <<= 2;
if (encoding)
dest = ip + i + src;
else
dest = src - (ip + i);
dest >>= 2;
dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000;
data[i + 0] = (Byte)(dest >> 24);
data[i + 1] = (Byte)(dest >> 16);
data[i + 2] = (Byte)(dest >> 8);
data[i + 3] = (Byte)dest;
}
}
return i;
}

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/* Bra.h -- Branch converters for executables
2009-02-07 : Igor Pavlov : Public domain */
#ifndef __BRA_H
#define __BRA_H
#include "Types.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
These functions convert relative addresses to absolute addresses
in CALL instructions to increase the compression ratio.
In:
data - data buffer
size - size of data
ip - current virtual Instruction Pinter (IP) value
state - state variable for x86 converter
encoding - 0 (for decoding), 1 (for encoding)
Out:
state - state variable for x86 converter
Returns:
The number of processed bytes. If you call these functions with multiple calls,
you must start next call with first byte after block of processed bytes.
Type Endian Alignment LookAhead
x86 little 1 4
ARMT little 2 2
ARM little 4 0
PPC big 4 0
SPARC big 4 0
IA64 little 16 0
size must be >= Alignment + LookAhead, if it's not last block.
If (size < Alignment + LookAhead), converter returns 0.
Example:
UInt32 ip = 0;
for ()
{
; size must be >= Alignment + LookAhead, if it's not last block
SizeT processed = Convert(data, size, ip, 1);
data += processed;
size -= processed;
ip += processed;
}
*/
#define x86_Convert_Init(state) { state = 0; }
SizeT x86_Convert(Byte *data, SizeT size, UInt32 ip, UInt32 *state, int encoding);
SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
#ifdef __cplusplus
}
#endif
#endif

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/* Bra86.c -- Converter for x86 code (BCJ)
2008-10-04 : Igor Pavlov : Public domain */
#include "Bra.h"
#define Test86MSByte(b) ((b) == 0 || (b) == 0xFF)
const Byte kMaskToAllowedStatus[8] = {1, 1, 1, 0, 1, 0, 0, 0};
const Byte kMaskToBitNumber[8] = {0, 1, 2, 2, 3, 3, 3, 3};
SizeT x86_Convert(Byte *data, SizeT size, UInt32 ip, UInt32 *state, int encoding)
{
SizeT bufferPos = 0, prevPosT;
UInt32 prevMask = *state & 0x7;
if (size < 5)
return 0;
ip += 5;
prevPosT = (SizeT)0 - 1;
for (;;)
{
Byte *p = data + bufferPos;
Byte *limit = data + size - 4;
for (; p < limit; p++)
if ((*p & 0xFE) == 0xE8)
break;
bufferPos = (SizeT)(p - data);
if (p >= limit)
break;
prevPosT = bufferPos - prevPosT;
if (prevPosT > 3)
prevMask = 0;
else
{
prevMask = (prevMask << ((int)prevPosT - 1)) & 0x7;
if (prevMask != 0)
{
Byte b = p[4 - kMaskToBitNumber[prevMask]];
if (!kMaskToAllowedStatus[prevMask] || Test86MSByte(b))
{
prevPosT = bufferPos;
prevMask = ((prevMask << 1) & 0x7) | 1;
bufferPos++;
continue;
}
}
}
prevPosT = bufferPos;
if (Test86MSByte(p[4]))
{
UInt32 src = ((UInt32)p[4] << 24) | ((UInt32)p[3] << 16) | ((UInt32)p[2] << 8) | ((UInt32)p[1]);
UInt32 dest;
for (;;)
{
Byte b;
int index;
if (encoding)
dest = (ip + (UInt32)bufferPos) + src;
else
dest = src - (ip + (UInt32)bufferPos);
if (prevMask == 0)
break;
index = kMaskToBitNumber[prevMask] * 8;
b = (Byte)(dest >> (24 - index));
if (!Test86MSByte(b))
break;
src = dest ^ ((1 << (32 - index)) - 1);
}
p[4] = (Byte)(~(((dest >> 24) & 1) - 1));
p[3] = (Byte)(dest >> 16);
p[2] = (Byte)(dest >> 8);
p[1] = (Byte)dest;
bufferPos += 5;
}
else
{
prevMask = ((prevMask << 1) & 0x7) | 1;
bufferPos++;
}
}
prevPosT = bufferPos - prevPosT;
*state = ((prevPosT > 3) ? 0 : ((prevMask << ((int)prevPosT - 1)) & 0x7));
return bufferPos;
}

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/* CpuArch.c -- CPU specific code
2010-10-26: Igor Pavlov : Public domain */
#include "CpuArch.h"
#ifdef MY_CPU_X86_OR_AMD64
#if (defined(_MSC_VER) && !defined(MY_CPU_AMD64)) || defined(__GNUC__)
#define USE_ASM
#endif
#if defined(USE_ASM) && !defined(MY_CPU_AMD64)
static UInt32 CheckFlag(UInt32 flag)
{
#ifdef _MSC_VER
__asm pushfd;
__asm pop EAX;
__asm mov EDX, EAX;
__asm xor EAX, flag;
__asm push EAX;
__asm popfd;
__asm pushfd;
__asm pop EAX;
__asm xor EAX, EDX;
__asm push EDX;
__asm popfd;
__asm and flag, EAX;
#else
__asm__ __volatile__ (
"pushf\n\t"
"pop %%EAX\n\t"
"movl %%EAX,%%EDX\n\t"
"xorl %0,%%EAX\n\t"
"push %%EAX\n\t"
"popf\n\t"
"pushf\n\t"
"pop %%EAX\n\t"
"xorl %%EDX,%%EAX\n\t"
"push %%EDX\n\t"
"popf\n\t"
"andl %%EAX, %0\n\t":
"=c" (flag) : "c" (flag));
#endif
return flag;
}
#define CHECK_CPUID_IS_SUPPORTED if (CheckFlag(1 << 18) == 0 || CheckFlag(1 << 21) == 0) return False;
#else
#define CHECK_CPUID_IS_SUPPORTED
#endif
static void MyCPUID(UInt32 function, UInt32 *a, UInt32 *b, UInt32 *c, UInt32 *d)
{
#ifdef USE_ASM
#ifdef _MSC_VER
UInt32 a2, b2, c2, d2;
__asm xor EBX, EBX;
__asm xor ECX, ECX;
__asm xor EDX, EDX;
__asm mov EAX, function;
__asm cpuid;
__asm mov a2, EAX;
__asm mov b2, EBX;
__asm mov c2, ECX;
__asm mov d2, EDX;
*a = a2;
*b = b2;
*c = c2;
*d = d2;
#else
// Mac cross-compile compiler:
// can't find register in class 'BREG' while reloading 'asm'
// so use class 'r' and register var binding
register _b asm("%bx");
__asm__ __volatile__ (
"cpuid"
: "=a" (*a) ,
"=r" (_b) ,
"=c" (*c) ,
"=d" (*d)
: "0" (function)) ;
*b = _b;
#endif
#else
int CPUInfo[4];
__cpuid(CPUInfo, function);
*a = CPUInfo[0];
*b = CPUInfo[1];
*c = CPUInfo[2];
*d = CPUInfo[3];
#endif
}
Bool x86cpuid_CheckAndRead(Cx86cpuid *p)
{
CHECK_CPUID_IS_SUPPORTED
MyCPUID(0, &p->maxFunc, &p->vendor[0], &p->vendor[2], &p->vendor[1]);
MyCPUID(1, &p->ver, &p->b, &p->c, &p->d);
return True;
}
static UInt32 kVendors[][3] =
{
{ 0x756E6547, 0x49656E69, 0x6C65746E},
{ 0x68747541, 0x69746E65, 0x444D4163},
{ 0x746E6543, 0x48727561, 0x736C7561}
};
int x86cpuid_GetFirm(const Cx86cpuid *p)
{
unsigned i;
for (i = 0; i < sizeof(kVendors) / sizeof(kVendors[i]); i++)
{
const UInt32 *v = kVendors[i];
if (v[0] == p->vendor[0] &&
v[1] == p->vendor[1] &&
v[2] == p->vendor[2])
return (int)i;
}
return -1;
}
Bool CPU_Is_InOrder()
{
Cx86cpuid p;
int firm;
UInt32 family, model;
if (!x86cpuid_CheckAndRead(&p))
return True;
family = x86cpuid_GetFamily(&p);
model = x86cpuid_GetModel(&p);
firm = x86cpuid_GetFirm(&p);
switch (firm)
{
case CPU_FIRM_INTEL: return (family < 6 || (family == 6 && model == 0x100C));
case CPU_FIRM_AMD: return (family < 5 || (family == 5 && (model < 6 || model == 0xA)));
case CPU_FIRM_VIA: return (family < 6 || (family == 6 && model < 0xF));
}
return True;
}
#if !defined(MY_CPU_AMD64) && defined(_WIN32)
static Bool CPU_Sys_Is_SSE_Supported()
{
OSVERSIONINFO vi;
vi.dwOSVersionInfoSize = sizeof(vi);
if (!GetVersionEx(&vi))
return False;
return (vi.dwMajorVersion >= 5);
}
#define CHECK_SYS_SSE_SUPPORT if (!CPU_Sys_Is_SSE_Supported()) return False;
#else
#define CHECK_SYS_SSE_SUPPORT
#endif
Bool CPU_Is_Aes_Supported()
{
Cx86cpuid p;
CHECK_SYS_SSE_SUPPORT
if (!x86cpuid_CheckAndRead(&p))
return False;
return (p.c >> 25) & 1;
}
#endif

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/* CpuArch.h -- CPU specific code
2010-10-26: Igor Pavlov : Public domain */
#ifndef __CPU_ARCH_H
#define __CPU_ARCH_H
#include "Types.h"
EXTERN_C_BEGIN
/*
MY_CPU_LE means that CPU is LITTLE ENDIAN.
If MY_CPU_LE is not defined, we don't know about that property of platform (it can be LITTLE ENDIAN).
MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned memory accesses.
If MY_CPU_LE_UNALIGN is not defined, we don't know about these properties of platform.
*/
#if defined(_M_X64) || defined(_M_AMD64) || defined(__x86_64__)
#define MY_CPU_AMD64
#endif
#if defined(MY_CPU_AMD64) || defined(_M_IA64)
#define MY_CPU_64BIT
#endif
#if defined(_M_IX86) || defined(__i386__)
#define MY_CPU_X86
#endif
#if defined(MY_CPU_X86) || defined(MY_CPU_AMD64)
#define MY_CPU_X86_OR_AMD64
#endif
#if defined(MY_CPU_X86) || defined(_M_ARM)
#define MY_CPU_32BIT
#endif
#if defined(_WIN32) && defined(_M_ARM)
#define MY_CPU_ARM_LE
#endif
#if defined(_WIN32) && defined(_M_IA64)
#define MY_CPU_IA64_LE
#endif
#if defined(MY_CPU_X86_OR_AMD64)
#define MY_CPU_LE_UNALIGN
#endif
#if defined(MY_CPU_X86_OR_AMD64) || defined(MY_CPU_ARM_LE) || defined(MY_CPU_IA64_LE) || defined(__ARMEL__) || defined(__MIPSEL__) || defined(__LITTLE_ENDIAN__)
#define MY_CPU_LE
#endif
#if defined(__BIG_ENDIAN__)
#define MY_CPU_BE
#endif
#if defined(MY_CPU_LE) && defined(MY_CPU_BE)
Stop_Compiling_Bad_Endian
#endif
#ifdef MY_CPU_LE_UNALIGN
#define GetUi16(p) (*(const UInt16 *)(p))
#define GetUi32(p) (*(const UInt32 *)(p))
#define GetUi64(p) (*(const UInt64 *)(p))
#define SetUi16(p, d) *(UInt16 *)(p) = (d);
#define SetUi32(p, d) *(UInt32 *)(p) = (d);
#define SetUi64(p, d) *(UInt64 *)(p) = (d);
#else
#define GetUi16(p) (((const Byte *)(p))[0] | ((UInt16)((const Byte *)(p))[1] << 8))
#define GetUi32(p) ( \
((const Byte *)(p))[0] | \
((UInt32)((const Byte *)(p))[1] << 8) | \
((UInt32)((const Byte *)(p))[2] << 16) | \
((UInt32)((const Byte *)(p))[3] << 24))
#define GetUi64(p) (GetUi32(p) | ((UInt64)GetUi32(((const Byte *)(p)) + 4) << 32))
#define SetUi16(p, d) { UInt32 _x_ = (d); \
((Byte *)(p))[0] = (Byte)_x_; \
((Byte *)(p))[1] = (Byte)(_x_ >> 8); }
#define SetUi32(p, d) { UInt32 _x_ = (d); \
((Byte *)(p))[0] = (Byte)_x_; \
((Byte *)(p))[1] = (Byte)(_x_ >> 8); \
((Byte *)(p))[2] = (Byte)(_x_ >> 16); \
((Byte *)(p))[3] = (Byte)(_x_ >> 24); }
#define SetUi64(p, d) { UInt64 _x64_ = (d); \
SetUi32(p, (UInt32)_x64_); \
SetUi32(((Byte *)(p)) + 4, (UInt32)(_x64_ >> 32)); }
#endif
#if defined(MY_CPU_LE_UNALIGN) && defined(_WIN64) && (_MSC_VER >= 1300)
#pragma intrinsic(_byteswap_ulong)
#pragma intrinsic(_byteswap_uint64)
#define GetBe32(p) _byteswap_ulong(*(const UInt32 *)(const Byte *)(p))
#define GetBe64(p) _byteswap_uint64(*(const UInt64 *)(const Byte *)(p))
#else
#define GetBe32(p) ( \
((UInt32)((const Byte *)(p))[0] << 24) | \
((UInt32)((const Byte *)(p))[1] << 16) | \
((UInt32)((const Byte *)(p))[2] << 8) | \
((const Byte *)(p))[3] )
#define GetBe64(p) (((UInt64)GetBe32(p) << 32) | GetBe32(((const Byte *)(p)) + 4))
#endif
#define GetBe16(p) (((UInt16)((const Byte *)(p))[0] << 8) | ((const Byte *)(p))[1])
#ifdef MY_CPU_X86_OR_AMD64
typedef struct
{
UInt32 maxFunc;
UInt32 vendor[3];
UInt32 ver;
UInt32 b;
UInt32 c;
UInt32 d;
} Cx86cpuid;
enum
{
CPU_FIRM_INTEL,
CPU_FIRM_AMD,
CPU_FIRM_VIA
};
Bool x86cpuid_CheckAndRead(Cx86cpuid *p);
int x86cpuid_GetFirm(const Cx86cpuid *p);
#define x86cpuid_GetFamily(p) (((p)->ver >> 8) & 0xFF00F)
#define x86cpuid_GetModel(p) (((p)->ver >> 4) & 0xF00F)
#define x86cpuid_GetStepping(p) ((p)->ver & 0xF)
Bool CPU_Is_InOrder();
Bool CPU_Is_Aes_Supported();
#endif
EXTERN_C_END
#endif

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/* Lzma2Dec.c -- LZMA2 Decoder
2009-05-03 : Igor Pavlov : Public domain */
/* #define SHOW_DEBUG_INFO */
#ifdef SHOW_DEBUG_INFO
#include <stdio.h>
#endif
#include <string.h>
#include "Lzma2Dec.h"
/*
00000000 - EOS
00000001 U U - Uncompressed Reset Dic
00000010 U U - Uncompressed No Reset
100uuuuu U U P P - LZMA no reset
101uuuuu U U P P - LZMA reset state
110uuuuu U U P P S - LZMA reset state + new prop
111uuuuu U U P P S - LZMA reset state + new prop + reset dic
u, U - Unpack Size
P - Pack Size
S - Props
*/
#define LZMA2_CONTROL_LZMA (1 << 7)
#define LZMA2_CONTROL_COPY_NO_RESET 2
#define LZMA2_CONTROL_COPY_RESET_DIC 1
#define LZMA2_CONTROL_EOF 0
#define LZMA2_IS_UNCOMPRESSED_STATE(p) (((p)->control & LZMA2_CONTROL_LZMA) == 0)
#define LZMA2_GET_LZMA_MODE(p) (((p)->control >> 5) & 3)
#define LZMA2_IS_THERE_PROP(mode) ((mode) >= 2)
#define LZMA2_LCLP_MAX 4
#define LZMA2_DIC_SIZE_FROM_PROP(p) (((UInt32)2 | ((p) & 1)) << ((p) / 2 + 11))
#ifdef SHOW_DEBUG_INFO
#define PRF(x) x
#else
#define PRF(x)
#endif
typedef enum
{
LZMA2_STATE_CONTROL,
LZMA2_STATE_UNPACK0,
LZMA2_STATE_UNPACK1,
LZMA2_STATE_PACK0,
LZMA2_STATE_PACK1,
LZMA2_STATE_PROP,
LZMA2_STATE_DATA,
LZMA2_STATE_DATA_CONT,
LZMA2_STATE_FINISHED,
LZMA2_STATE_ERROR
} ELzma2State;
static SRes Lzma2Dec_GetOldProps(Byte prop, Byte *props)
{
UInt32 dicSize;
if (prop > 40)
return SZ_ERROR_UNSUPPORTED;
dicSize = (prop == 40) ? 0xFFFFFFFF : LZMA2_DIC_SIZE_FROM_PROP(prop);
props[0] = (Byte)LZMA2_LCLP_MAX;
props[1] = (Byte)(dicSize);
props[2] = (Byte)(dicSize >> 8);
props[3] = (Byte)(dicSize >> 16);
props[4] = (Byte)(dicSize >> 24);
return SZ_OK;
}
SRes Lzma2Dec_AllocateProbs(CLzma2Dec *p, Byte prop, ISzAlloc *alloc)
{
Byte props[LZMA_PROPS_SIZE];
RINOK(Lzma2Dec_GetOldProps(prop, props));
return LzmaDec_AllocateProbs(&p->decoder, props, LZMA_PROPS_SIZE, alloc);
}
SRes Lzma2Dec_Allocate(CLzma2Dec *p, Byte prop, ISzAlloc *alloc)
{
Byte props[LZMA_PROPS_SIZE];
RINOK(Lzma2Dec_GetOldProps(prop, props));
return LzmaDec_Allocate(&p->decoder, props, LZMA_PROPS_SIZE, alloc);
}
void Lzma2Dec_Init(CLzma2Dec *p)
{
p->state = LZMA2_STATE_CONTROL;
p->needInitDic = True;
p->needInitState = True;
p->needInitProp = True;
LzmaDec_Init(&p->decoder);
}
static ELzma2State Lzma2Dec_UpdateState(CLzma2Dec *p, Byte b)
{
switch(p->state)
{
case LZMA2_STATE_CONTROL:
p->control = b;
PRF(printf("\n %4X ", p->decoder.dicPos));
PRF(printf(" %2X", b));
if (p->control == 0)
return LZMA2_STATE_FINISHED;
if (LZMA2_IS_UNCOMPRESSED_STATE(p))
{
if ((p->control & 0x7F) > 2)
return LZMA2_STATE_ERROR;
p->unpackSize = 0;
}
else
p->unpackSize = (UInt32)(p->control & 0x1F) << 16;
return LZMA2_STATE_UNPACK0;
case LZMA2_STATE_UNPACK0:
p->unpackSize |= (UInt32)b << 8;
return LZMA2_STATE_UNPACK1;
case LZMA2_STATE_UNPACK1:
p->unpackSize |= (UInt32)b;
p->unpackSize++;
PRF(printf(" %8d", p->unpackSize));
return (LZMA2_IS_UNCOMPRESSED_STATE(p)) ? LZMA2_STATE_DATA : LZMA2_STATE_PACK0;
case LZMA2_STATE_PACK0:
p->packSize = (UInt32)b << 8;
return LZMA2_STATE_PACK1;
case LZMA2_STATE_PACK1:
p->packSize |= (UInt32)b;
p->packSize++;
PRF(printf(" %8d", p->packSize));
return LZMA2_IS_THERE_PROP(LZMA2_GET_LZMA_MODE(p)) ? LZMA2_STATE_PROP:
(p->needInitProp ? LZMA2_STATE_ERROR : LZMA2_STATE_DATA);
case LZMA2_STATE_PROP:
{
int lc, lp;
if (b >= (9 * 5 * 5))
return LZMA2_STATE_ERROR;
lc = b % 9;
b /= 9;
p->decoder.prop.pb = b / 5;
lp = b % 5;
if (lc + lp > LZMA2_LCLP_MAX)
return LZMA2_STATE_ERROR;
p->decoder.prop.lc = lc;
p->decoder.prop.lp = lp;
p->needInitProp = False;
return LZMA2_STATE_DATA;
}
}
return LZMA2_STATE_ERROR;
}
static void LzmaDec_UpdateWithUncompressed(CLzmaDec *p, const Byte *src, SizeT size)
{
memcpy(p->dic + p->dicPos, src, size);
p->dicPos += size;
if (p->checkDicSize == 0 && p->prop.dicSize - p->processedPos <= size)
p->checkDicSize = p->prop.dicSize;
p->processedPos += (UInt32)size;
}
static
void LzmaDec_InitDicAndState(CLzmaDec *p, Bool initDic, Bool initState)
{
p->needFlush = 1;
p->remainLen = 0;
p->tempBufSize = 0;
if (initDic)
{
p->processedPos = 0;
p->checkDicSize = 0;
p->needInitState = 1;
}
if (initState)
p->needInitState = 1;
}
SRes Lzma2Dec_DecodeToDic(CLzma2Dec *p, SizeT dicLimit,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
{
SizeT inSize = *srcLen;
*srcLen = 0;
*status = LZMA_STATUS_NOT_SPECIFIED;
while (p->state != LZMA2_STATE_FINISHED)
{
SizeT dicPos = p->decoder.dicPos;
if (p->state == LZMA2_STATE_ERROR)
return SZ_ERROR_DATA;
if (dicPos == dicLimit && finishMode == LZMA_FINISH_ANY)
{
*status = LZMA_STATUS_NOT_FINISHED;
return SZ_OK;
}
if (p->state != LZMA2_STATE_DATA && p->state != LZMA2_STATE_DATA_CONT)
{
if (*srcLen == inSize)
{
*status = LZMA_STATUS_NEEDS_MORE_INPUT;
return SZ_OK;
}
(*srcLen)++;
p->state = Lzma2Dec_UpdateState(p, *src++);
continue;
}
{
SizeT destSizeCur = dicLimit - dicPos;
SizeT srcSizeCur = inSize - *srcLen;
ELzmaFinishMode curFinishMode = LZMA_FINISH_ANY;
if (p->unpackSize <= destSizeCur)
{
destSizeCur = (SizeT)p->unpackSize;
curFinishMode = LZMA_FINISH_END;
}
if (LZMA2_IS_UNCOMPRESSED_STATE(p))
{
if (*srcLen == inSize)
{
*status = LZMA_STATUS_NEEDS_MORE_INPUT;
return SZ_OK;
}
if (p->state == LZMA2_STATE_DATA)
{
Bool initDic = (p->control == LZMA2_CONTROL_COPY_RESET_DIC);
if (initDic)
p->needInitProp = p->needInitState = True;
else if (p->needInitDic)
return SZ_ERROR_DATA;
p->needInitDic = False;
LzmaDec_InitDicAndState(&p->decoder, initDic, False);
}
if (srcSizeCur > destSizeCur)
srcSizeCur = destSizeCur;
if (srcSizeCur == 0)
return SZ_ERROR_DATA;
LzmaDec_UpdateWithUncompressed(&p->decoder, src, srcSizeCur);
src += srcSizeCur;
*srcLen += srcSizeCur;
p->unpackSize -= (UInt32)srcSizeCur;
p->state = (p->unpackSize == 0) ? LZMA2_STATE_CONTROL : LZMA2_STATE_DATA_CONT;
}
else
{
SizeT outSizeProcessed;
SRes res;
if (p->state == LZMA2_STATE_DATA)
{
int mode = LZMA2_GET_LZMA_MODE(p);
Bool initDic = (mode == 3);
Bool initState = (mode > 0);
if ((!initDic && p->needInitDic) || (!initState && p->needInitState))
return SZ_ERROR_DATA;
LzmaDec_InitDicAndState(&p->decoder, initDic, initState);
p->needInitDic = False;
p->needInitState = False;
p->state = LZMA2_STATE_DATA_CONT;
}
if (srcSizeCur > p->packSize)
srcSizeCur = (SizeT)p->packSize;
res = LzmaDec_DecodeToDic(&p->decoder, dicPos + destSizeCur, src, &srcSizeCur, curFinishMode, status);
src += srcSizeCur;
*srcLen += srcSizeCur;
p->packSize -= (UInt32)srcSizeCur;
outSizeProcessed = p->decoder.dicPos - dicPos;
p->unpackSize -= (UInt32)outSizeProcessed;
RINOK(res);
if (*status == LZMA_STATUS_NEEDS_MORE_INPUT)
return res;
if (srcSizeCur == 0 && outSizeProcessed == 0)
{
if (*status != LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK ||
p->unpackSize != 0 || p->packSize != 0)
return SZ_ERROR_DATA;
p->state = LZMA2_STATE_CONTROL;
}
if (*status == LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK)
*status = LZMA_STATUS_NOT_FINISHED;
}
}
}
*status = LZMA_STATUS_FINISHED_WITH_MARK;
return SZ_OK;
}
SRes Lzma2Dec_DecodeToBuf(CLzma2Dec *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
{
SizeT outSize = *destLen, inSize = *srcLen;
*srcLen = *destLen = 0;
for (;;)
{
SizeT srcSizeCur = inSize, outSizeCur, dicPos;
ELzmaFinishMode curFinishMode;
SRes res;
if (p->decoder.dicPos == p->decoder.dicBufSize)
p->decoder.dicPos = 0;
dicPos = p->decoder.dicPos;
if (outSize > p->decoder.dicBufSize - dicPos)
{
outSizeCur = p->decoder.dicBufSize;
curFinishMode = LZMA_FINISH_ANY;
}
else
{
outSizeCur = dicPos + outSize;
curFinishMode = finishMode;
}
res = Lzma2Dec_DecodeToDic(p, outSizeCur, src, &srcSizeCur, curFinishMode, status);
src += srcSizeCur;
inSize -= srcSizeCur;
*srcLen += srcSizeCur;
outSizeCur = p->decoder.dicPos - dicPos;
memcpy(dest, p->decoder.dic + dicPos, outSizeCur);
dest += outSizeCur;
outSize -= outSizeCur;
*destLen += outSizeCur;
if (res != 0)
return res;
if (outSizeCur == 0 || outSize == 0)
return SZ_OK;
}
}
SRes Lzma2Decode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
Byte prop, ELzmaFinishMode finishMode, ELzmaStatus *status, ISzAlloc *alloc)
{
CLzma2Dec decoder;
SRes res;
SizeT outSize = *destLen, inSize = *srcLen;
Byte props[LZMA_PROPS_SIZE];
Lzma2Dec_Construct(&decoder);
*destLen = *srcLen = 0;
*status = LZMA_STATUS_NOT_SPECIFIED;
decoder.decoder.dic = dest;
decoder.decoder.dicBufSize = outSize;
RINOK(Lzma2Dec_GetOldProps(prop, props));
RINOK(LzmaDec_AllocateProbs(&decoder.decoder, props, LZMA_PROPS_SIZE, alloc));
*srcLen = inSize;
res = Lzma2Dec_DecodeToDic(&decoder, outSize, src, srcLen, finishMode, status);
*destLen = decoder.decoder.dicPos;
if (res == SZ_OK && *status == LZMA_STATUS_NEEDS_MORE_INPUT)
res = SZ_ERROR_INPUT_EOF;
LzmaDec_FreeProbs(&decoder.decoder, alloc);
return res;
}

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/* Lzma2Dec.h -- LZMA2 Decoder
2009-05-03 : Igor Pavlov : Public domain */
#ifndef __LZMA2_DEC_H
#define __LZMA2_DEC_H
#include "LzmaDec.h"
#ifdef __cplusplus
extern "C" {
#endif
/* ---------- State Interface ---------- */
typedef struct
{
CLzmaDec decoder;
UInt32 packSize;
UInt32 unpackSize;
int state;
Byte control;
Bool needInitDic;
Bool needInitState;
Bool needInitProp;
} CLzma2Dec;
#define Lzma2Dec_Construct(p) LzmaDec_Construct(&(p)->decoder)
#define Lzma2Dec_FreeProbs(p, alloc) LzmaDec_FreeProbs(&(p)->decoder, alloc);
#define Lzma2Dec_Free(p, alloc) LzmaDec_Free(&(p)->decoder, alloc);
SRes Lzma2Dec_AllocateProbs(CLzma2Dec *p, Byte prop, ISzAlloc *alloc);
SRes Lzma2Dec_Allocate(CLzma2Dec *p, Byte prop, ISzAlloc *alloc);
void Lzma2Dec_Init(CLzma2Dec *p);
/*
finishMode:
It has meaning only if the decoding reaches output limit (*destLen or dicLimit).
LZMA_FINISH_ANY - use smallest number of input bytes
LZMA_FINISH_END - read EndOfStream marker after decoding
Returns:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
LZMA_STATUS_NEEDS_MORE_INPUT
SZ_ERROR_DATA - Data error
*/
SRes Lzma2Dec_DecodeToDic(CLzma2Dec *p, SizeT dicLimit,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
SRes Lzma2Dec_DecodeToBuf(CLzma2Dec *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
/* ---------- One Call Interface ---------- */
/*
finishMode:
It has meaning only if the decoding reaches output limit (*destLen).
LZMA_FINISH_ANY - use smallest number of input bytes
LZMA_FINISH_END - read EndOfStream marker after decoding
Returns:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
SZ_ERROR_DATA - Data error
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
*/
SRes Lzma2Decode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
Byte prop, ELzmaFinishMode finishMode, ELzmaStatus *status, ISzAlloc *alloc);
#ifdef __cplusplus
}
#endif
#endif

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/* LzmaDec.h -- LZMA Decoder
2009-02-07 : Igor Pavlov : Public domain */
#ifndef __LZMA_DEC_H
#define __LZMA_DEC_H
#include "Types.h"
#ifdef __cplusplus
extern "C" {
#endif
/* #define _LZMA_PROB32 */
/* _LZMA_PROB32 can increase the speed on some CPUs,
but memory usage for CLzmaDec::probs will be doubled in that case */
#ifdef _LZMA_PROB32
#define CLzmaProb UInt32
#else
#define CLzmaProb UInt16
#endif
/* ---------- LZMA Properties ---------- */
#define LZMA_PROPS_SIZE 5
typedef struct _CLzmaProps
{
unsigned lc, lp, pb;
UInt32 dicSize;
} CLzmaProps;
/* LzmaProps_Decode - decodes properties
Returns:
SZ_OK
SZ_ERROR_UNSUPPORTED - Unsupported properties
*/
SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size);
/* ---------- LZMA Decoder state ---------- */
/* LZMA_REQUIRED_INPUT_MAX = number of required input bytes for worst case.
Num bits = log2((2^11 / 31) ^ 22) + 26 < 134 + 26 = 160; */
#define LZMA_REQUIRED_INPUT_MAX 20
typedef struct
{
CLzmaProps prop;
CLzmaProb *probs;
Byte *dic;
const Byte *buf;
UInt32 range, code;
SizeT dicPos;
SizeT dicBufSize;
UInt32 processedPos;
UInt32 checkDicSize;
unsigned state;
UInt32 reps[4];
unsigned remainLen;
int needFlush;
int needInitState;
UInt32 numProbs;
unsigned tempBufSize;
Byte tempBuf[LZMA_REQUIRED_INPUT_MAX];
} CLzmaDec;
#define LzmaDec_Construct(p) { (p)->dic = 0; (p)->probs = 0; }
void LzmaDec_Init(CLzmaDec *p);
/* There are two types of LZMA streams:
0) Stream with end mark. That end mark adds about 6 bytes to compressed size.
1) Stream without end mark. You must know exact uncompressed size to decompress such stream. */
typedef enum
{
LZMA_FINISH_ANY, /* finish at any point */
LZMA_FINISH_END /* block must be finished at the end */
} ELzmaFinishMode;
/* ELzmaFinishMode has meaning only if the decoding reaches output limit !!!
You must use LZMA_FINISH_END, when you know that current output buffer
covers last bytes of block. In other cases you must use LZMA_FINISH_ANY.
If LZMA decoder sees end marker before reaching output limit, it returns SZ_OK,
and output value of destLen will be less than output buffer size limit.
You can check status result also.
You can use multiple checks to test data integrity after full decompression:
1) Check Result and "status" variable.
2) Check that output(destLen) = uncompressedSize, if you know real uncompressedSize.
3) Check that output(srcLen) = compressedSize, if you know real compressedSize.
You must use correct finish mode in that case. */
typedef enum
{
LZMA_STATUS_NOT_SPECIFIED, /* use main error code instead */
LZMA_STATUS_FINISHED_WITH_MARK, /* stream was finished with end mark. */
LZMA_STATUS_NOT_FINISHED, /* stream was not finished */
LZMA_STATUS_NEEDS_MORE_INPUT, /* you must provide more input bytes */
LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK /* there is probability that stream was finished without end mark */
} ELzmaStatus;
/* ELzmaStatus is used only as output value for function call */
/* ---------- Interfaces ---------- */
/* There are 3 levels of interfaces:
1) Dictionary Interface
2) Buffer Interface
3) One Call Interface
You can select any of these interfaces, but don't mix functions from different
groups for same object. */
/* There are two variants to allocate state for Dictionary Interface:
1) LzmaDec_Allocate / LzmaDec_Free
2) LzmaDec_AllocateProbs / LzmaDec_FreeProbs
You can use variant 2, if you set dictionary buffer manually.
For Buffer Interface you must always use variant 1.
LzmaDec_Allocate* can return:
SZ_OK
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
*/
SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc);
void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc);
SRes LzmaDec_Allocate(CLzmaDec *state, const Byte *prop, unsigned propsSize, ISzAlloc *alloc);
void LzmaDec_Free(CLzmaDec *state, ISzAlloc *alloc);
/* ---------- Dictionary Interface ---------- */
/* You can use it, if you want to eliminate the overhead for data copying from
dictionary to some other external buffer.
You must work with CLzmaDec variables directly in this interface.
STEPS:
LzmaDec_Constr()
LzmaDec_Allocate()
for (each new stream)
{
LzmaDec_Init()
while (it needs more decompression)
{
LzmaDec_DecodeToDic()
use data from CLzmaDec::dic and update CLzmaDec::dicPos
}
}
LzmaDec_Free()
*/
/* LzmaDec_DecodeToDic
The decoding to internal dictionary buffer (CLzmaDec::dic).
You must manually update CLzmaDec::dicPos, if it reaches CLzmaDec::dicBufSize !!!
finishMode:
It has meaning only if the decoding reaches output limit (dicLimit).
LZMA_FINISH_ANY - Decode just dicLimit bytes.
LZMA_FINISH_END - Stream must be finished after dicLimit.
Returns:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
LZMA_STATUS_NEEDS_MORE_INPUT
LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
SZ_ERROR_DATA - Data error
*/
SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
/* ---------- Buffer Interface ---------- */
/* It's zlib-like interface.
See LzmaDec_DecodeToDic description for information about STEPS and return results,
but you must use LzmaDec_DecodeToBuf instead of LzmaDec_DecodeToDic and you don't need
to work with CLzmaDec variables manually.
finishMode:
It has meaning only if the decoding reaches output limit (*destLen).
LZMA_FINISH_ANY - Decode just destLen bytes.
LZMA_FINISH_END - Stream must be finished after (*destLen).
*/
SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
/* ---------- One Call Interface ---------- */
/* LzmaDecode
finishMode:
It has meaning only if the decoding reaches output limit (*destLen).
LZMA_FINISH_ANY - Decode just destLen bytes.
LZMA_FINISH_END - Stream must be finished after (*destLen).
Returns:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
SZ_ERROR_DATA - Data error
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
*/
SRes LzmaDecode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
const Byte *propData, unsigned propSize, ELzmaFinishMode finishMode,
ELzmaStatus *status, ISzAlloc *alloc);
#ifdef __cplusplus
}
#endif
#endif

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/* Types.h -- Basic types
2010-10-09 : Igor Pavlov : Public domain */
#ifndef __7Z_TYPES_H
#define __7Z_TYPES_H
#include <stddef.h>
#ifdef _WIN32
#include <windows.h>
#endif
#ifndef EXTERN_C_BEGIN
#ifdef __cplusplus
#define EXTERN_C_BEGIN extern "C" {
#define EXTERN_C_END }
#else
#define EXTERN_C_BEGIN
#define EXTERN_C_END
#endif
#endif
EXTERN_C_BEGIN
#define SZ_OK 0
#define SZ_ERROR_DATA 1
#define SZ_ERROR_MEM 2
#define SZ_ERROR_CRC 3
#define SZ_ERROR_UNSUPPORTED 4
#define SZ_ERROR_PARAM 5
#define SZ_ERROR_INPUT_EOF 6
#define SZ_ERROR_OUTPUT_EOF 7
#define SZ_ERROR_READ 8
#define SZ_ERROR_WRITE 9
#define SZ_ERROR_PROGRESS 10
#define SZ_ERROR_FAIL 11
#define SZ_ERROR_THREAD 12
#define SZ_ERROR_ARCHIVE 16
#define SZ_ERROR_NO_ARCHIVE 17
typedef int SRes;
#ifdef _WIN32
typedef DWORD WRes;
#else
typedef int WRes;
#endif
#ifndef RINOK
#define RINOK(x) { int __result__ = (x); if (__result__ != 0) return __result__; }
#endif
typedef unsigned char Byte;
typedef short Int16;
typedef unsigned short UInt16;
#ifdef _LZMA_UINT32_IS_ULONG
typedef long Int32;
typedef unsigned long UInt32;
#else
typedef int Int32;
typedef unsigned int UInt32;
#endif
#ifdef _SZ_NO_INT_64
/* define _SZ_NO_INT_64, if your compiler doesn't support 64-bit integers.
NOTES: Some code will work incorrectly in that case! */
typedef long Int64;
typedef unsigned long UInt64;
#else
#if defined(_MSC_VER) || defined(__BORLANDC__)
typedef __int64 Int64;
typedef unsigned __int64 UInt64;
#define UINT64_CONST(n) n
#else
typedef long long int Int64;
typedef unsigned long long int UInt64;
#define UINT64_CONST(n) n ## ULL
#endif
#endif
#ifdef _LZMA_NO_SYSTEM_SIZE_T
typedef UInt32 SizeT;
#else
typedef size_t SizeT;
#endif
typedef int Bool;
#define True 1
#define False 0
#ifdef _WIN32
#define MY_STD_CALL __stdcall
#else
#define MY_STD_CALL
#endif
#ifdef _MSC_VER
#if _MSC_VER >= 1300
#define MY_NO_INLINE __declspec(noinline)
#else
#define MY_NO_INLINE
#endif
#define MY_CDECL __cdecl
#define MY_FAST_CALL __fastcall
#else
#define MY_CDECL
#define MY_FAST_CALL
#endif
/* The following interfaces use first parameter as pointer to structure */
typedef struct
{
Byte (*Read)(void *p); /* reads one byte, returns 0 in case of EOF or error */
} IByteIn;
typedef struct
{
void (*Write)(void *p, Byte b);
} IByteOut;
typedef struct
{
SRes (*Read)(void *p, void *buf, size_t *size);
/* if (input(*size) != 0 && output(*size) == 0) means end_of_stream.
(output(*size) < input(*size)) is allowed */
} ISeqInStream;
/* it can return SZ_ERROR_INPUT_EOF */
SRes SeqInStream_Read(ISeqInStream *stream, void *buf, size_t size);
SRes SeqInStream_Read2(ISeqInStream *stream, void *buf, size_t size, SRes errorType);
SRes SeqInStream_ReadByte(ISeqInStream *stream, Byte *buf);
typedef struct
{
size_t (*Write)(void *p, const void *buf, size_t size);
/* Returns: result - the number of actually written bytes.
(result < size) means error */
} ISeqOutStream;
typedef enum
{
SZ_SEEK_SET = 0,
SZ_SEEK_CUR = 1,
SZ_SEEK_END = 2
} ESzSeek;
typedef struct
{
SRes (*Read)(void *p, void *buf, size_t *size); /* same as ISeqInStream::Read */
SRes (*Seek)(void *p, Int64 *pos, ESzSeek origin);
} ISeekInStream;
typedef struct
{
SRes (*Look)(void *p, const void **buf, size_t *size);
/* if (input(*size) != 0 && output(*size) == 0) means end_of_stream.
(output(*size) > input(*size)) is not allowed
(output(*size) < input(*size)) is allowed */
SRes (*Skip)(void *p, size_t offset);
/* offset must be <= output(*size) of Look */
SRes (*Read)(void *p, void *buf, size_t *size);
/* reads directly (without buffer). It's same as ISeqInStream::Read */
SRes (*Seek)(void *p, Int64 *pos, ESzSeek origin);
} ILookInStream;
SRes LookInStream_LookRead(ILookInStream *stream, void *buf, size_t *size);
SRes LookInStream_SeekTo(ILookInStream *stream, UInt64 offset);
/* reads via ILookInStream::Read */
SRes LookInStream_Read2(ILookInStream *stream, void *buf, size_t size, SRes errorType);
SRes LookInStream_Read(ILookInStream *stream, void *buf, size_t size);
#define LookToRead_BUF_SIZE (1 << 14)
typedef struct
{
ILookInStream s;
ISeekInStream *realStream;
size_t pos;
size_t size;
Byte buf[LookToRead_BUF_SIZE];
} CLookToRead;
void LookToRead_CreateVTable(CLookToRead *p, int lookahead);
void LookToRead_Init(CLookToRead *p);
typedef struct
{
ISeqInStream s;
ILookInStream *realStream;
} CSecToLook;
void SecToLook_CreateVTable(CSecToLook *p);
typedef struct
{
ISeqInStream s;
ILookInStream *realStream;
} CSecToRead;
void SecToRead_CreateVTable(CSecToRead *p);
typedef struct
{
SRes (*Progress)(void *p, UInt64 inSize, UInt64 outSize);
/* Returns: result. (result != SZ_OK) means break.
Value (UInt64)(Int64)-1 for size means unknown value. */
} ICompressProgress;
typedef struct
{
void *(*Alloc)(void *p, size_t size);
void (*Free)(void *p, void *address); /* address can be 0 */
} ISzAlloc;
#define IAlloc_Alloc(p, size) (p)->Alloc((p), size)
#define IAlloc_Free(p, a) (p)->Free((p), a)
#ifdef _WIN32
#define CHAR_PATH_SEPARATOR '\\'
#define WCHAR_PATH_SEPARATOR L'\\'
#define STRING_PATH_SEPARATOR "\\"
#define WSTRING_PATH_SEPARATOR L"\\"
#else
#define CHAR_PATH_SEPARATOR '/'
#define WCHAR_PATH_SEPARATOR L'/'
#define STRING_PATH_SEPARATOR "/"
#define WSTRING_PATH_SEPARATOR L"/"
#endif
EXTERN_C_END
#endif

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LZMA SDK 4.65
-------------
LZMA SDK provides the documentation, samples, header files, libraries,
and tools you need to develop applications that use LZMA compression.
LZMA is default and general compression method of 7z format
in 7-Zip compression program (www.7-zip.org). LZMA provides high
compression ratio and very fast decompression.
LZMA is an improved version of famous LZ77 compression algorithm.
It was improved in way of maximum increasing of compression ratio,
keeping high decompression speed and low memory requirements for
decompressing.
LICENSE
-------
LZMA SDK is written and placed in the public domain by Igor Pavlov.
LZMA SDK Contents
-----------------
LZMA SDK includes:
- ANSI-C/C++/C#/Java source code for LZMA compressing and decompressing
- Compiled file->file LZMA compressing/decompressing program for Windows system
UNIX/Linux version
------------------
To compile C++ version of file->file LZMA encoding, go to directory
C++/7zip/Compress/LZMA_Alone
and call make to recompile it:
make -f makefile.gcc clean all
In some UNIX/Linux versions you must compile LZMA with static libraries.
To compile with static libraries, you can use
LIB = -lm -static
Files
---------------------
lzma.txt - LZMA SDK description (this file)
7zFormat.txt - 7z Format description
7zC.txt - 7z ANSI-C Decoder description
methods.txt - Compression method IDs for .7z
lzma.exe - Compiled file->file LZMA encoder/decoder for Windows
history.txt - history of the LZMA SDK
Source code structure
---------------------
C/ - C files
7zCrc*.* - CRC code
Alloc.* - Memory allocation functions
Bra*.* - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code
LzFind.* - Match finder for LZ (LZMA) encoders
LzFindMt.* - Match finder for LZ (LZMA) encoders for multithreading encoding
LzHash.h - Additional file for LZ match finder
LzmaDec.* - LZMA decoding
LzmaEnc.* - LZMA encoding
LzmaLib.* - LZMA Library for DLL calling
Types.h - Basic types for another .c files
Threads.* - The code for multithreading.
LzmaLib - LZMA Library (.DLL for Windows)
LzmaUtil - LZMA Utility (file->file LZMA encoder/decoder).
Archive - files related to archiving
7z - 7z ANSI-C Decoder
CPP/ -- CPP files
Common - common files for C++ projects
Windows - common files for Windows related code
7zip - files related to 7-Zip Project
Common - common files for 7-Zip
Compress - files related to compression/decompression
Copy - Copy coder
RangeCoder - Range Coder (special code of compression/decompression)
LZMA - LZMA compression/decompression on C++
LZMA_Alone - file->file LZMA compression/decompression
Branch - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code
Archive - files related to archiving
Common - common files for archive handling
7z - 7z C++ Encoder/Decoder
Bundles - Modules that are bundles of other modules
Alone7z - 7zr.exe: Standalone version of 7z.exe that supports only 7z/LZMA/BCJ/BCJ2
Format7zR - 7zr.dll: Reduced version of 7za.dll: extracting/compressing to 7z/LZMA/BCJ/BCJ2
Format7zExtractR - 7zxr.dll: Reduced version of 7zxa.dll: extracting from 7z/LZMA/BCJ/BCJ2.
UI - User Interface files
Client7z - Test application for 7za.dll, 7zr.dll, 7zxr.dll
Common - Common UI files
Console - Code for console archiver
CS/ - C# files
7zip
Common - some common files for 7-Zip
Compress - files related to compression/decompression
LZ - files related to LZ (Lempel-Ziv) compression algorithm
LZMA - LZMA compression/decompression
LzmaAlone - file->file LZMA compression/decompression
RangeCoder - Range Coder (special code of compression/decompression)
Java/ - Java files
SevenZip
Compression - files related to compression/decompression
LZ - files related to LZ (Lempel-Ziv) compression algorithm
LZMA - LZMA compression/decompression
RangeCoder - Range Coder (special code of compression/decompression)
C/C++ source code of LZMA SDK is part of 7-Zip project.
7-Zip source code can be downloaded from 7-Zip's SourceForge page:
http://sourceforge.net/projects/sevenzip/
LZMA features
-------------
- Variable dictionary size (up to 1 GB)
- Estimated compressing speed: about 2 MB/s on 2 GHz CPU
- Estimated decompressing speed:
- 20-30 MB/s on 2 GHz Core 2 or AMD Athlon 64
- 1-2 MB/s on 200 MHz ARM, MIPS, PowerPC or other simple RISC
- Small memory requirements for decompressing (16 KB + DictionarySize)
- Small code size for decompressing: 5-8 KB
LZMA decoder uses only integer operations and can be
implemented in any modern 32-bit CPU (or on 16-bit CPU with some conditions).
Some critical operations that affect the speed of LZMA decompression:
1) 32*16 bit integer multiply
2) Misspredicted branches (penalty mostly depends from pipeline length)
3) 32-bit shift and arithmetic operations
The speed of LZMA decompressing mostly depends from CPU speed.
Memory speed has no big meaning. But if your CPU has small data cache,
overall weight of memory speed will slightly increase.
How To Use
----------
Using LZMA encoder/decoder executable
--------------------------------------
Usage: LZMA <e|d> inputFile outputFile [<switches>...]
e: encode file
d: decode file
b: Benchmark. There are two tests: compressing and decompressing
with LZMA method. Benchmark shows rating in MIPS (million
instructions per second). Rating value is calculated from
measured speed and it is normalized with Intel's Core 2 results.
Also Benchmark checks possible hardware errors (RAM
errors in most cases). Benchmark uses these settings:
(-a1, -d21, -fb32, -mfbt4). You can change only -d parameter.
Also you can change the number of iterations. Example for 30 iterations:
LZMA b 30
Default number of iterations is 10.
<Switches>
-a{N}: set compression mode 0 = fast, 1 = normal
default: 1 (normal)
d{N}: Sets Dictionary size - [0, 30], default: 23 (8MB)
The maximum value for dictionary size is 1 GB = 2^30 bytes.
Dictionary size is calculated as DictionarySize = 2^N bytes.
For decompressing file compressed by LZMA method with dictionary
size D = 2^N you need about D bytes of memory (RAM).
-fb{N}: set number of fast bytes - [5, 273], default: 128
Usually big number gives a little bit better compression ratio
and slower compression process.
-lc{N}: set number of literal context bits - [0, 8], default: 3
Sometimes lc=4 gives gain for big files.
-lp{N}: set number of literal pos bits - [0, 4], default: 0
lp switch is intended for periodical data when period is
equal 2^N. For example, for 32-bit (4 bytes)
periodical data you can use lp=2. Often it's better to set lc0,
if you change lp switch.
-pb{N}: set number of pos bits - [0, 4], default: 2
pb switch is intended for periodical data
when period is equal 2^N.
-mf{MF_ID}: set Match Finder. Default: bt4.
Algorithms from hc* group doesn't provide good compression
ratio, but they often works pretty fast in combination with
fast mode (-a0).
Memory requirements depend from dictionary size
(parameter "d" in table below).
MF_ID Memory Description
bt2 d * 9.5 + 4MB Binary Tree with 2 bytes hashing.
bt3 d * 11.5 + 4MB Binary Tree with 3 bytes hashing.
bt4 d * 11.5 + 4MB Binary Tree with 4 bytes hashing.
hc4 d * 7.5 + 4MB Hash Chain with 4 bytes hashing.
-eos: write End Of Stream marker. By default LZMA doesn't write
eos marker, since LZMA decoder knows uncompressed size
stored in .lzma file header.
-si: Read data from stdin (it will write End Of Stream marker).
-so: Write data to stdout
Examples:
1) LZMA e file.bin file.lzma -d16 -lc0
compresses file.bin to file.lzma with 64 KB dictionary (2^16=64K)
and 0 literal context bits. -lc0 allows to reduce memory requirements
for decompression.
2) LZMA e file.bin file.lzma -lc0 -lp2
compresses file.bin to file.lzma with settings suitable
for 32-bit periodical data (for example, ARM or MIPS code).
3) LZMA d file.lzma file.bin
decompresses file.lzma to file.bin.
Compression ratio hints
-----------------------
Recommendations
---------------
To increase the compression ratio for LZMA compressing it's desirable
to have aligned data (if it's possible) and also it's desirable to locate
data in such order, where code is grouped in one place and data is
grouped in other place (it's better than such mixing: code, data, code,
data, ...).
Filters
-------
You can increase the compression ratio for some data types, using
special filters before compressing. For example, it's possible to
increase the compression ratio on 5-10% for code for those CPU ISAs:
x86, IA-64, ARM, ARM-Thumb, PowerPC, SPARC.
You can find C source code of such filters in C/Bra*.* files
You can check the compression ratio gain of these filters with such
7-Zip commands (example for ARM code):
No filter:
7z a a1.7z a.bin -m0=lzma
With filter for little-endian ARM code:
7z a a2.7z a.bin -m0=arm -m1=lzma
It works in such manner:
Compressing = Filter_encoding + LZMA_encoding
Decompressing = LZMA_decoding + Filter_decoding
Compressing and decompressing speed of such filters is very high,
so it will not increase decompressing time too much.
Moreover, it reduces decompression time for LZMA_decoding,
since compression ratio with filtering is higher.
These filters convert CALL (calling procedure) instructions
from relative offsets to absolute addresses, so such data becomes more
compressible.
For some ISAs (for example, for MIPS) it's impossible to get gain from such filter.
LZMA compressed file format
---------------------------
Offset Size Description
0 1 Special LZMA properties (lc,lp, pb in encoded form)
1 4 Dictionary size (little endian)
5 8 Uncompressed size (little endian). -1 means unknown size
13 Compressed data
ANSI-C LZMA Decoder
~~~~~~~~~~~~~~~~~~~
Please note that interfaces for ANSI-C code were changed in LZMA SDK 4.58.
If you want to use old interfaces you can download previous version of LZMA SDK
from sourceforge.net site.
To use ANSI-C LZMA Decoder you need the following files:
1) LzmaDec.h + LzmaDec.c + Types.h
LzmaUtil/LzmaUtil.c is example application that uses these files.
Memory requirements for LZMA decoding
-------------------------------------
Stack usage of LZMA decoding function for local variables is not
larger than 200-400 bytes.
LZMA Decoder uses dictionary buffer and internal state structure.
Internal state structure consumes
state_size = (4 + (1.5 << (lc + lp))) KB
by default (lc=3, lp=0), state_size = 16 KB.
How To decompress data
----------------------
LZMA Decoder (ANSI-C version) now supports 2 interfaces:
1) Single-call Decompressing
2) Multi-call State Decompressing (zlib-like interface)
You must use external allocator:
Example:
void *SzAlloc(void *p, size_t size) { p = p; return malloc(size); }
void SzFree(void *p, void *address) { p = p; free(address); }
ISzAlloc alloc = { SzAlloc, SzFree };
You can use p = p; operator to disable compiler warnings.
Single-call Decompressing
-------------------------
When to use: RAM->RAM decompressing
Compile files: LzmaDec.h + LzmaDec.c + Types.h
Compile defines: no defines
Memory Requirements:
- Input buffer: compressed size
- Output buffer: uncompressed size
- LZMA Internal Structures: state_size (16 KB for default settings)
Interface:
int LzmaDecode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
const Byte *propData, unsigned propSize, ELzmaFinishMode finishMode,
ELzmaStatus *status, ISzAlloc *alloc);
In:
dest - output data
destLen - output data size
src - input data
srcLen - input data size
propData - LZMA properties (5 bytes)
propSize - size of propData buffer (5 bytes)
finishMode - It has meaning only if the decoding reaches output limit (*destLen).
LZMA_FINISH_ANY - Decode just destLen bytes.
LZMA_FINISH_END - Stream must be finished after (*destLen).
You can use LZMA_FINISH_END, when you know that
current output buffer covers last bytes of stream.
alloc - Memory allocator.
Out:
destLen - processed output size
srcLen - processed input size
Output:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
SZ_ERROR_DATA - Data error
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
If LZMA decoder sees end_marker before reaching output limit, it returns OK result,
and output value of destLen will be less than output buffer size limit.
You can use multiple checks to test data integrity after full decompression:
1) Check Result and "status" variable.
2) Check that output(destLen) = uncompressedSize, if you know real uncompressedSize.
3) Check that output(srcLen) = compressedSize, if you know real compressedSize.
You must use correct finish mode in that case. */
Multi-call State Decompressing (zlib-like interface)
----------------------------------------------------
When to use: file->file decompressing
Compile files: LzmaDec.h + LzmaDec.c + Types.h
Memory Requirements:
- Buffer for input stream: any size (for example, 16 KB)
- Buffer for output stream: any size (for example, 16 KB)
- LZMA Internal Structures: state_size (16 KB for default settings)
- LZMA dictionary (dictionary size is encoded in LZMA properties header)
1) read LZMA properties (5 bytes) and uncompressed size (8 bytes, little-endian) to header:
unsigned char header[LZMA_PROPS_SIZE + 8];
ReadFile(inFile, header, sizeof(header)
2) Allocate CLzmaDec structures (state + dictionary) using LZMA properties
CLzmaDec state;
LzmaDec_Constr(&state);
res = LzmaDec_Allocate(&state, header, LZMA_PROPS_SIZE, &g_Alloc);
if (res != SZ_OK)
return res;
3) Init LzmaDec structure before any new LZMA stream. And call LzmaDec_DecodeToBuf in loop
LzmaDec_Init(&state);
for (;;)
{
...
int res = LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode);
...
}
4) Free all allocated structures
LzmaDec_Free(&state, &g_Alloc);
For full code example, look at C/LzmaUtil/LzmaUtil.c code.
How To compress data
--------------------
Compile files: LzmaEnc.h + LzmaEnc.c + Types.h +
LzFind.c + LzFind.h + LzFindMt.c + LzFindMt.h + LzHash.h
Memory Requirements:
- (dictSize * 11.5 + 6 MB) + state_size
Lzma Encoder can use two memory allocators:
1) alloc - for small arrays.
2) allocBig - for big arrays.
For example, you can use Large RAM Pages (2 MB) in allocBig allocator for
better compression speed. Note that Windows has bad implementation for
Large RAM Pages.
It's OK to use same allocator for alloc and allocBig.
Single-call Compression with callbacks
--------------------------------------
Check C/LzmaUtil/LzmaUtil.c as example,
When to use: file->file decompressing
1) you must implement callback structures for interfaces:
ISeqInStream
ISeqOutStream
ICompressProgress
ISzAlloc
static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
static void SzFree(void *p, void *address) { p = p; MyFree(address); }
static ISzAlloc g_Alloc = { SzAlloc, SzFree };
CFileSeqInStream inStream;
CFileSeqOutStream outStream;
inStream.funcTable.Read = MyRead;
inStream.file = inFile;
outStream.funcTable.Write = MyWrite;
outStream.file = outFile;
2) Create CLzmaEncHandle object;
CLzmaEncHandle enc;
enc = LzmaEnc_Create(&g_Alloc);
if (enc == 0)
return SZ_ERROR_MEM;
3) initialize CLzmaEncProps properties;
LzmaEncProps_Init(&props);
Then you can change some properties in that structure.
4) Send LZMA properties to LZMA Encoder
res = LzmaEnc_SetProps(enc, &props);
5) Write encoded properties to header
Byte header[LZMA_PROPS_SIZE + 8];
size_t headerSize = LZMA_PROPS_SIZE;
UInt64 fileSize;
int i;
res = LzmaEnc_WriteProperties(enc, header, &headerSize);
fileSize = MyGetFileLength(inFile);
for (i = 0; i < 8; i++)
header[headerSize++] = (Byte)(fileSize >> (8 * i));
MyWriteFileAndCheck(outFile, header, headerSize)
6) Call encoding function:
res = LzmaEnc_Encode(enc, &outStream.funcTable, &inStream.funcTable,
NULL, &g_Alloc, &g_Alloc);
7) Destroy LZMA Encoder Object
LzmaEnc_Destroy(enc, &g_Alloc, &g_Alloc);
If callback function return some error code, LzmaEnc_Encode also returns that code.
Single-call RAM->RAM Compression
--------------------------------
Single-call RAM->RAM Compression is similar to Compression with callbacks,
but you provide pointers to buffers instead of pointers to stream callbacks:
HRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
Return code:
SZ_OK - OK
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_PARAM - Incorrect paramater
SZ_ERROR_OUTPUT_EOF - output buffer overflow
SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
LZMA Defines
------------
_LZMA_SIZE_OPT - Enable some optimizations in LZMA Decoder to get smaller executable code.
_LZMA_PROB32 - It can increase the speed on some 32-bit CPUs, but memory usage for
some structures will be doubled in that case.
_LZMA_UINT32_IS_ULONG - Define it if int is 16-bit on your compiler and long is 32-bit.
_LZMA_NO_SYSTEM_SIZE_T - Define it if you don't want to use size_t type.
C++ LZMA Encoder/Decoder
~~~~~~~~~~~~~~~~~~~~~~~~
C++ LZMA code use COM-like interfaces. So if you want to use it,
you can study basics of COM/OLE.
C++ LZMA code is just wrapper over ANSI-C code.
C++ Notes
~~~~~~~~~~~~~~~~~~~~~~~~
If you use some C++ code folders in 7-Zip (for example, C++ code for .7z handling),
you must check that you correctly work with "new" operator.
7-Zip can be compiled with MSVC 6.0 that doesn't throw "exception" from "new" operator.
So 7-Zip uses "CPP\Common\NewHandler.cpp" that redefines "new" operator:
operator new(size_t size)
{
void *p = ::malloc(size);
if (p == 0)
throw CNewException();
return p;
}
If you use MSCV that throws exception for "new" operator, you can compile without
"NewHandler.cpp". So standard exception will be used. Actually some code of
7-Zip catches any exception in internal code and converts it to HRESULT code.
So you don't need to catch CNewException, if you call COM interfaces of 7-Zip.
---
http://www.7-zip.org
http://www.7-zip.org/sdk.html
http://www.7-zip.org/support.html

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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
ProjectType="Visual C++"
Version="9.00"
Name="File_Extractor"
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71
fex/changes.txt
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File_Extractor Change Log
-------------------------
- Change that might break code.
+ Improvement that is unlikely to break any code.
* Other changes.
File_Extractor 1.0.0 (2009-10-12)
--------------------
- Added fex_stat() which MUST be called before getting current file
information beyond name, like fex_size().
- Changed fex_*() functions to always report error via return value,
rather than sometimes via a parameter. This will break user code that
uses fex_data(), fex_open(), fex_open_type(), and fex_identify_file().
See demos for usage.
- Deprecated C++ interface. Use fex.h and nothing else to access library
from user code.
- Removed archive types (fex_zip_type, etc.) from interface. Use
fex_identify_extension() to get particular type.
- Removed fex_mini.c, unzip.h, and unrarlib.h for now, as maintaining
them was too taxing. If others express desire for them, I can re-add
them.
- Removed fex_scan_only() and fex_read_once(), as they don't improve
performance anymore. Use fex_read() in place of fex_read_once().
- Removed fex_remain(). Use fex_size()-fex_tell() to find number of
bytes remaining.
- Removed fex_set_user_data() and related functions, as they didn't seem
useful to anyone.
- Removed fex_type_t structure from interface and added accessors
instead (fex_type_name(), fex_type_extension()).
+ Improved archive file type determination to reject other archive types
not handled by the library, rather than opening them as binary files.
+ Added Doxygen compatibility to fex.h.
+ Added fex_crc32() to quickly get CRC-32 of current file from archive
header, without having to read entire file to calculate it.
+ Added fex_err_code() to get numeric error code, along with other
helpful error-related functions. Also added more documentation on how to
handle library errors in user code.
+ Added fex_init() for use in multi-threaded programs.
+ Added fex_seek_arc() to seek to particular file in archive.
+ Added fex_wname() to get Unicode name of current file.
+ Added support for building as DLL.
+ Added support for wide-character file paths on Windows, enabled with
BLARGG_UTF8_PATHS (thanks to byuu for the idea). This is necessary to
support file paths on non-English Windows systems.
+ Started using unit testing during development.
+ Updated to 7-zip 4.65, unrar_core 3.8.5.
File_Extractor 0.4.3 (2008-12-08)
--------------------
* Limited release

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File_Extractor 1.0.0
--------------------
Author : Shay Green <gblargg@gmail.com>
Website : http://code.google.com/p/file-extractor/
License : GNU LGPL 2.1 or later for all except unrar
Language: C interface, C++ implementation
Contents
--------
* Overview
* Limitations
* Extracting file data
* Archive file type handling
* Using in multiple threads
* Error handling
* Solving problems
* Thanks
Overview
--------
File_Exactor (fex) allows you to write one version of file-opening code
that handles normal files and archives of files. It presents each as a
series of files that you can scan and optionally extract; a single file
is made to act like an archive of just one file, so your code doesn't
need to do anything special to handle it.
Basic steps for scanning and extracting from an archive:
* Open an archive or normal file using fex_open().
* Scanning/extraction loop:
- Exit loop if fex_done() returns true.
- Get current file's name with fex_name().
- If more file information is needed, call fex_stat() first.
- If extracting, use fex_data() or fex_read().
- Go to next file in archive with fex_next().
* Close archive and free memory with fex_close().
You can stop scanning an archive at any point, for example once you've
found the file you're looking for. If you need to go back to the first
file, call fex_rewind() at any time. Be sure to check error codes
returned by most functions.
Limitations
-----------
All archives:
* A file's checksum is verified only after ALL its data is extracted.
* Encryption, segmentation, files larger than 2GB, and other extra
features are not supported.
GZ archives:
* Only gzip archives of a single file are supported. If it has multiple
files, the reported size will be wrong. Multi-file gzip archives are
very rare.
ZIP archives:
* Supports files compressed using either deflation or store
(uncompressed). Other compression schemes like BZip2 and Deflate64 are
not supported.
* Archive must have a valid directory structure at the end.
RAR archives:
* Support for really old 1.x archives might not work. If you have some
of these old archives, send them to me so I can test them.
7-zip:
* Solid archives can currently use lots of memory when open.
Extracting file data
--------------------
A file's data can be extracted with one or more calls to fex_read(), as
you would read from a normal file. Use fex_tell() to find out how much
has already been read. Use this if you need the data read into your own
structure in memory.
File data can also be extracted to memory by the library with
fex_data(). The pointer returned is valid only until you go to another
file or close the archive, so this is only useful if you need to examine
or process the data immediately and not keep it around for later.
Archive extractors naturally keep a copy of the extracted data in memory
already for solid archive types (currently 7-zip and RAR), so this
function is optimized to avoid making a second copy of it in those
cases.
Use fex_size() to find the size of the extracted data. Remember that
fex_stat() or fex_data() must be called BEFORE calling fex_size().
Archive file type handling
--------------------------
By default, fex uses the filename extension and header to determine
archive type. If the filename extension is unrecognized or it lacks an
extension, fex examines the first few bytes of the file. If still
unrecognized, fex opens it as binary. Fex also checks for common archive
types that it doesn't support, so that it can reject as unsupported them
rather than unhelpfully opening them as binary.
Your file format might itself be an archive, for example your files end
in ".rsn" yet are normal RAR archives, or they end in ".vgz" and are
gzipped. This is why fex checks the headers of files with unknown
filename extensions, rather than treating them as binary or rejecting
them.
Type identification can be customized by using the various
identification functions and fex_open_type(). For example, you could
avoid the header check:
fex_t* fex;
fex_type_t type = fex_identify_extension( path );
if ( type == NULL )
error( "Unsupported archive type" );
error( fex_open_type( &fex, path, type ) );
Note that you'll only get a NULL type for known archive type that fex
doesn't handle; you won't get it for your own files, for example
fex_identify_extension("myfile.foo") won't return NULL (unless for some
reason you've disabled binary file support).
Use fex_type_list() to get a list of the types fex supports, for example
to tell the user what archive types your program supports:
const fex_type_t* t;
for ( t = fex_type_list(); *t; t++ )
printf( "%s\n", fex_type_name( *t ) );
To get the fex_type_t for a particular archive type, use
fex_identify_extension():
fex_type_t zip_type = fex_identify_extension( ".zip" );
if ( zip_type == NULL )
error( "ZIP isn't supported" );
Be sure to check the result as shown, rather than assuming the library
supports a particular archive type. Use an extension of "" to get the
type for binary files:
fex_type_t bin_type = fex_identify_extension( "" );
if ( bin_type == NULL )
error( "Binary files aren't supported?!?" );
Using in multiple threads
-------------------------
Fex supports multi-threaded programs. If only one thread at a time is
using the library, nothing special needs to be done. If more than one
thread is using the library, the following must be done:
* Call fex_init() from the main thread and ensure it completes before
any other threads use any fex functions. This initializes shared data
tables used by the extractors.
* For each archive opened, only access it from one thread at a time.
Different archives can be accessed from different threads without any
synchronization, since fex uses no global variables. If the same archive
must be accessed from multiple threads, all calls to any fex functions
must be in critical section(s).
Unicode file paths on Windows
-----------------------------
If using Windows and your program supports Unicode file paths, enable
BLARGG_UTF8_PATHS in blargg_config.h, and convert your wide-character
paths to UTF-8 before passing them to fex.h functions:
/* Wide-character path that could have come from system */
wchar_t wide_path [] = L"demo.zip";
/* Convert from wide path and check for error */
char* path = fex_wide_to_path( wide_path );
if ( path == NULL )
error( "Out of memory" );
/* Use converted path for fex call */
error( fex_open( &fex, path ) );
/* Free memory used by path */
fex_free_path( path );
The converted path can be used with any of the fex functions that take
paths, for example fex_identify_extension() or fex_has_extension().
Error handling
--------------
Most functions that can fail return fex_err_t, a pointer type. On
failure they return a pointer to an error object, and on success they
return NULL. Use fex_err_code() to get a conventional error code, or
fex_err_str() to get a string suitable for reporting to the user.
There are two basic approches that your code can use to handle library
errors. It can return errors, or report them and exit the function via
some other means.
Your code can return errors as the library does, using fex_err_t:
#define RETURN_ERR( expr ) \
do {\
fex_err_t err = (expr);\
if ( err != NULL )\
return err;\
} while ( 0 )
fex_err_t my_func()
{
RETURN_ERR( fex_foo() );
RETURN_ERR( fex_bar() );
return NULL;
}
If you have your own error codes, you can convert fex's errors to them:
// error codes that differ from library's
enum {
my_ok = 0,
my_generic_error = 123,
my_out_of_memory = 456,
my_file_not_found = 789
// ...
};
int convert_error( fex_err_t err )
{
switch ( fex_err_code( err ) )
{
case fex_ok: return my_ok;
case fex_err_generic: return my_generic_error;
case fex_err_memory: return my_out_of_memory;
case fex_err_file_missing: return my_file_not_found;
// ...
default: return my_generic_error;
}
}
#define RETURN_ERR( expr ) \
do {\
fex_err_t err = (expr);\
if ( err != NULL )\
return convert_error( err );\
} while ( 0 )
int my_func()
{
RETURN_ERR( fex_foo() );
RETURN_ERR( fex_bar() );
return my_ok;
}
The other approach is to pass all errors to an error handler function
that never returns if passed a non-success error value:
// never returns if err != NULL
void handle_error( fex_err_t err );
void my_func()
{
handle_error( fex_foo() );
handle_error( fex_bar() );
}
handle_error() could print the error and exit the program:
void handle_error( fex_err_t err )
{
if ( err != NULL )
{
const char* str = fex_err_str( err );
printf( "Error: %s\n", str );
exit( EXIT_FAILURE );
}
}
handle_error() could also throw a C++ exception (or equivalently in C,
longmp() back to a setjmp() done inside caller()):
void handle_error( fex_err_t err )
{
switch ( fex_err_code( err ) )
{
case fex_ok: return;
case fex_err_memory: throw std::bad_alloc();
// ...
case fex_err_generic:
default:
throw std::runtime_error( fex_err_str( err ) );
}
}
void caller()
{
try
{
my_func();
}
catch ( const std::exception& e )
{
printf( "Error: %s\n", e.what() );
}
}
Solving problems
----------------
If you're having problems, try the following:
* Enable debugging support in your environment. This enables assertions
and other run-time checks. In particular, be sure NDEBUG isn't defined.
* Turn the compiler's optimizer is off. Sometimes an optimizer generates
bad code.
* If multiple threads are being used, ensure that only one at a time is
accessing a given set of objects from the library. This library is not
in general thread-safe, though independent objects can be used in
separate threads.
* If all else fails, see if the demo works.
Thanks
------
Thanks to Richard Bannister, Kode54, byuu, Cless, and DJRobX for testing
and giving feedback for the library. Thanks to the authors of zlib,
unrar, and 7-zip.
--
Shay Green <gblargg@gmail.com>

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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Binary_Extractor.h"
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
// TODO: could close file once data has been read into memory
static File_Extractor* new_binary()
{
return BLARGG_NEW Binary_Extractor;
}
fex_type_t_ const fex_bin_type [1] = {{
"",
&new_binary,
"file",
NULL
}};
Binary_Extractor::Binary_Extractor() :
File_Extractor( fex_bin_type )
{ }
Binary_Extractor::~Binary_Extractor()
{
close();
}
blargg_err_t Binary_Extractor::open_path_v()
{
set_name( arc_path() );
return blargg_ok;
}
blargg_err_t Binary_Extractor::open_v()
{
set_name( arc_path() );
set_info( arc().remain(), 0, 0 );
return blargg_ok;
}
void Binary_Extractor::close_v()
{ }
blargg_err_t Binary_Extractor::next_v()
{
return blargg_ok;
}
blargg_err_t Binary_Extractor::rewind_v()
{
return open_path_v();
}
blargg_err_t Binary_Extractor::stat_v()
{
RETURN_ERR( open_arc_file() );
RETURN_ERR( arc().seek( 0 ) );
return open_v();
}
blargg_err_t Binary_Extractor::extract_v( void* p, int n )
{
return arc().read( p, n );
}

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// Presents a single file as an "archive" of just that file.
// File_Extractor 1.0.0
#ifndef BINARY_EXTRACTOR_H
#define BINARY_EXTRACTOR_H
#include "File_Extractor.h"
class Binary_Extractor : public File_Extractor {
public:
Binary_Extractor();
virtual ~Binary_Extractor();
protected:
virtual blargg_err_t open_path_v();
virtual blargg_err_t open_v();
virtual void close_v();
virtual blargg_err_t next_v();
virtual blargg_err_t rewind_v();
virtual blargg_err_t stat_v();
virtual blargg_err_t extract_v( void*, int );
};
#endif

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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Data_Reader.h"
#include "blargg_endian.h"
#include <stdio.h>
#include <errno.h>
#include <wchar.h>
#if BLARGG_UTF8_PATHS
#include <windows.h>
#endif
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
// Data_Reader
blargg_err_t Data_Reader::read( void* p, int n )
{
assert( n >= 0 );
if ( n < 0 )
return blargg_err_caller;
if ( n <= 0 )
return blargg_ok;
if ( n > remain() )
return blargg_err_file_eof;
blargg_err_t err = read_v( p, n );
if ( !err )
remain_ -= n;
return err;
}
blargg_err_t Data_Reader::read_avail( void* p, int* n_ )
{
assert( *n_ >= 0 );
int n = min( *n_, remain() );
*n_ = 0;
if ( n < 0 )
return blargg_err_caller;
if ( n <= 0 )
return blargg_ok;
blargg_err_t err = read_v( p, n );
if ( !err )
{
remain_ -= n;
*n_ = n;
}
return err;
}
blargg_err_t Data_Reader::read_avail( void* p, long* n )
{
int i = STATIC_CAST(int, *n);
blargg_err_t err = read_avail( p, &i );
*n = i;
return err;
}
blargg_err_t Data_Reader::skip_v( int count )
{
char buf [512];
while ( count )
{
int n = min( count, (int) sizeof buf );
count -= n;
RETURN_ERR( read_v( buf, n ) );
}
return blargg_ok;
}
blargg_err_t Data_Reader::skip( int n )
{
assert( n >= 0 );
if ( n < 0 )
return blargg_err_caller;
if ( n <= 0 )
return blargg_ok;
if ( n > remain() )
return blargg_err_file_eof;
blargg_err_t err = skip_v( n );
if ( !err )
remain_ -= n;
return err;
}
// File_Reader
blargg_err_t File_Reader::seek( int n )
{
assert( n >= 0 );
if ( n < 0 )
return blargg_err_caller;
if ( n == tell() )
return blargg_ok;
if ( n > size() )
return blargg_err_file_eof;
blargg_err_t err = seek_v( n );
if ( !err )
set_tell( n );
return err;
}
blargg_err_t File_Reader::skip_v( int n )
{
return seek_v( tell() + n );
}
// Subset_Reader
Subset_Reader::Subset_Reader( Data_Reader* dr, int size ) :
in( dr )
{
set_remain( min( size, dr->remain() ) );
}
blargg_err_t Subset_Reader::read_v( void* p, int s )
{
return in->read( p, s );
}
// Remaining_Reader
Remaining_Reader::Remaining_Reader( void const* h, int size, Data_Reader* r ) :
in( r )
{
header = h;
header_remain = size;
set_remain( size + r->remain() );
}
blargg_err_t Remaining_Reader::read_v( void* out, int count )
{
int first = min( count, header_remain );
if ( first )
{
memcpy( out, header, first );
header = STATIC_CAST(char const*, header) + first;
header_remain -= first;
}
return in->read( STATIC_CAST(char*, out) + first, count - first );
}
// Mem_File_Reader
Mem_File_Reader::Mem_File_Reader( const void* p, long s ) :
begin( STATIC_CAST(const char*, p) )
{
set_size( s );
}
blargg_err_t Mem_File_Reader::read_v( void* p, int s )
{
memcpy( p, begin + tell(), s );
return blargg_ok;
}
blargg_err_t Mem_File_Reader::seek_v( int )
{
return blargg_ok;
}
// Callback_Reader
Callback_Reader::Callback_Reader( callback_t c, long s, void* d ) :
callback( c ),
user_data( d )
{
set_remain( s );
}
blargg_err_t Callback_Reader::read_v( void* out, int count )
{
return callback( user_data, out, count );
}
// Callback_File_Reader
Callback_File_Reader::Callback_File_Reader( callback_t c, long s, void* d ) :
callback( c ),
user_data( d )
{
set_size( s );
}
blargg_err_t Callback_File_Reader::read_v( void* out, int count )
{
return callback( user_data, out, count, tell() );
}
blargg_err_t Callback_File_Reader::seek_v( int )
{
return blargg_ok;
}
static const BOOST::uint8_t mask_tab[6]={0x80,0xE0,0xF0,0xF8,0xFC,0xFE};
static const BOOST::uint8_t val_tab[6]={0,0xC0,0xE0,0xF0,0xF8,0xFC};
size_t utf8_char_len_from_header( char p_c )
{
BOOST::uint8_t c = (BOOST::uint8_t)p_c;
size_t cnt = 0;
for(;;)
{
if ( ( p_c & mask_tab[cnt] ) == val_tab[cnt] ) break;
if ( ++cnt >= 6 ) return 0;
}
return cnt + 1;
}
size_t utf8_decode_char( const char *p_utf8, unsigned & wide, size_t mmax )
{
const BOOST::uint8_t * utf8 = ( const BOOST::uint8_t* )p_utf8;
if ( mmax == 0 )
{
wide = 0;
return 0;
}
if ( utf8[0] < 0x80 )
{
wide = utf8[0];
return utf8[0]>0 ? 1 : 0;
}
if ( mmax > 6 ) mmax = 6;
wide = 0;
unsigned res=0;
unsigned n;
unsigned cnt=0;
for(;;)
{
if ( ( *utf8 & mask_tab[cnt] ) == val_tab[cnt] ) break;
if ( ++cnt >= mmax ) return 0;
}
cnt++;
if ( cnt==2 && !( *utf8 & 0x1E ) ) return 0;
if ( cnt == 1 )
res = *utf8;
else
res = ( 0xFF >> ( cnt + 1 ) ) & *utf8;
for ( n = 1; n < cnt; n++ )
{
if ( ( utf8[n] & 0xC0 ) != 0x80 )
return 0;
if ( !res && n == 2 && !( ( utf8[n] & 0x7F ) >> ( 7 - cnt ) ) )
return 0;
res = ( res << 6 ) | ( utf8[n] & 0x3F );
}
wide = res;
return cnt;
}
size_t utf8_encode_char( unsigned wide, char * target )
{
size_t count;
if ( wide < 0x80 )
count = 1;
else if ( wide < 0x800 )
count = 2;
else if ( wide < 0x10000 )
count = 3;
else if ( wide < 0x200000 )
count = 4;
else if ( wide < 0x4000000 )
count = 5;
else if ( wide <= 0x7FFFFFFF )
count = 6;
else
return 0;
if ( target == 0 )
return count;
switch ( count )
{
case 6:
target[5] = 0x80 | ( wide & 0x3F );
wide = wide >> 6;
wide |= 0x4000000;
case 5:
target[4] = 0x80 | ( wide & 0x3F );
wide = wide >> 6;
wide |= 0x200000;
case 4:
target[3] = 0x80 | ( wide & 0x3F );
wide = wide >> 6;
wide |= 0x10000;
case 3:
target[2] = 0x80 | ( wide & 0x3F );
wide = wide >> 6;
wide |= 0x800;
case 2:
target[1] = 0x80 | ( wide & 0x3F );
wide = wide >> 6;
wide |= 0xC0;
case 1:
target[0] = wide;
}
return count;
}
size_t utf16_encode_char( unsigned cur_wchar, wchar_t * out )
{
if ( cur_wchar < 0x10000 )
{
if ( out ) *out = (wchar_t) cur_wchar; return 1;
}
else if ( cur_wchar < ( 1 << 20 ) )
{
unsigned c = cur_wchar - 0x10000;
//MSDN:
//The first (high) surrogate is a 16-bit code value in the range U+D800 to U+DBFF. The second (low) surrogate is a 16-bit code value in the range U+DC00 to U+DFFF. Using surrogates, Unicode can support over one million characters. For more details about surrogates, refer to The Unicode Standard, version 2.0.
if ( out )
{
out[0] = ( wchar_t )( 0xD800 | ( 0x3FF & ( c >> 10 ) ) );
out[1] = ( wchar_t )( 0xDC00 | ( 0x3FF & c ) ) ;
}
return 2;
}
else
{
if ( out ) *out = '?'; return 1;
}
}
size_t utf16_decode_char( const wchar_t * p_source, unsigned * p_out, size_t p_source_length )
{
if ( p_source_length == 0 ) return 0;
else if ( p_source_length == 1 )
{
*p_out = p_source[0];
return 1;
}
else
{
size_t retval = 0;
unsigned decoded = p_source[0];
if ( decoded != 0 )
{
retval = 1;
if ( ( decoded & 0xFC00 ) == 0xD800 )
{
unsigned low = p_source[1];
if ( ( low & 0xFC00 ) == 0xDC00 )
{
decoded = 0x10000 + ( ( ( decoded & 0x3FF ) << 10 ) | ( low & 0x3FF ) );
retval = 2;
}
}
}
*p_out = decoded;
return retval;
}
}
// Converts wide-character path to UTF-8. Free result with free(). Only supported on Windows.
char* blargg_to_utf8( const wchar_t* wpath )
{
if ( wpath == NULL )
return NULL;
size_t needed = 0;
size_t mmax = wcslen( wpath );
if ( mmax <= 0 )
return NULL;
size_t ptr = 0;
while ( ptr < mmax )
{
unsigned wide = 0;
size_t char_len = utf16_decode_char( wpath + ptr, &wide, mmax - ptr );
if ( !char_len ) break;
ptr += char_len;
needed += utf8_encode_char( wide, 0 );
}
if ( needed <= 0 )
return NULL;
char* path = (char*) calloc( needed + 1, 1 );
if ( path == NULL )
return NULL;
ptr = 0;
size_t actual = 0;
while ( ptr < mmax && actual < needed )
{
unsigned wide = 0;
size_t char_len = utf16_decode_char( wpath + ptr, &wide, mmax - ptr );
if ( !char_len ) break;
ptr += char_len;
actual += utf8_encode_char( wide, path + actual );
}
if ( actual == 0 )
{
free( path );
return NULL;
}
assert( actual == needed );
return path;
}
// Converts UTF-8 path to wide-character. Free result with free() Only supported on Windows.
wchar_t* blargg_to_wide( const char* path )
{
if ( path == NULL )
return NULL;
size_t mmax = strlen( path );
if ( mmax <= 0 )
return NULL;
size_t needed = 0;
size_t ptr = 0;
while ( ptr < mmax )
{
unsigned wide = 0;
size_t char_len = utf8_decode_char( path + ptr, wide, mmax - ptr );
if ( !char_len ) break;
ptr += char_len;
needed += utf16_encode_char( wide, 0 );
}
if ( needed <= 0 )
return NULL;
wchar_t* wpath = (wchar_t*) calloc( needed + 1, sizeof *wpath );
if ( wpath == NULL )
return NULL;
ptr = 0;
size_t actual = 0;
while ( ptr < mmax && actual < needed )
{
unsigned wide = 0;
size_t char_len = utf8_decode_char( path + ptr, wide, mmax - ptr );
if ( !char_len ) break;
ptr += char_len;
actual += utf16_encode_char( wide, wpath + actual );
}
if ( actual == 0 )
{
free( wpath );
return NULL;
}
assert( actual == needed );
return wpath;
}
#ifdef _WIN32
static FILE* blargg_fopen( const char path [], const char mode [] )
{
FILE* file = NULL;
wchar_t* wmode = NULL;
wchar_t* wpath = NULL;
wpath = blargg_to_wide( path );
if ( wpath )
{
wmode = blargg_to_wide( mode );
if ( wmode )
file = _wfopen( wpath, wmode );
}
// Save and restore errno in case free() clears it
int saved_errno = errno;
free( wmode );
free( wpath );
errno = saved_errno;
return file;
}
#else
static inline FILE* blargg_fopen( const char path [], const char mode [] )
{
return fopen( path, mode );
}
#endif
// Std_File_Reader
Std_File_Reader::Std_File_Reader()
{
file_ = NULL;
}
Std_File_Reader::~Std_File_Reader()
{
close();
}
static blargg_err_t blargg_fopen( FILE** out, const char path [] )
{
errno = 0;
*out = blargg_fopen( path, "rb" );
if ( !*out )
{
#ifdef ENOENT
if ( errno == ENOENT )
return blargg_err_file_missing;
#endif
#ifdef ENOMEM
if ( errno == ENOMEM )
return blargg_err_memory;
#endif
return blargg_err_file_read;
}
return blargg_ok;
}
static blargg_err_t blargg_fsize( FILE* f, long* out )
{
if ( fseek( f, 0, SEEK_END ) )
return blargg_err_file_io;
*out = ftell( f );
if ( *out < 0 )
return blargg_err_file_io;
if ( fseek( f, 0, SEEK_SET ) )
return blargg_err_file_io;
return blargg_ok;
}
blargg_err_t Std_File_Reader::open( const char path [] )
{
close();
FILE* f;
RETURN_ERR( blargg_fopen( &f, path ) );
long s;
blargg_err_t err = blargg_fsize( f, &s );
if ( err )
{
fclose( f );
return err;
}
file_ = f;
set_size( s );
return blargg_ok;
}
void Std_File_Reader::make_unbuffered()
{
if ( setvbuf( STATIC_CAST(FILE*, file_), NULL, _IONBF, 0 ) )
check( false ); // shouldn't fail, but OK if it does
}
blargg_err_t Std_File_Reader::read_v( void* p, int s )
{
if ( (size_t) s != fread( p, 1, s, STATIC_CAST(FILE*, file_) ) )
{
// Data_Reader's wrapper should prevent EOF
check( !feof( STATIC_CAST(FILE*, file_) ) );
return blargg_err_file_io;
}
return blargg_ok;
}
blargg_err_t Std_File_Reader::seek_v( int n )
{
if ( fseek( STATIC_CAST(FILE*, file_), n, SEEK_SET ) )
{
// Data_Reader's wrapper should prevent EOF
check( !feof( STATIC_CAST(FILE*, file_) ) );
return blargg_err_file_io;
}
return blargg_ok;
}
void Std_File_Reader::close()
{
if ( file_ )
{
fclose( STATIC_CAST(FILE*, file_) );
file_ = NULL;
}
}
// Gzip_File_Reader
#ifdef HAVE_ZLIB_H
#include "zlib.h"
static const char* get_gzip_eof( const char path [], long* eof )
{
FILE* file;
RETURN_ERR( blargg_fopen( &file, path ) );
int const h_size = 4;
unsigned char h [h_size];
// read four bytes to ensure that we can seek to -4 later
if ( fread( h, 1, h_size, file ) != (size_t) h_size || h[0] != 0x1F || h[1] != 0x8B )
{
// Not gzipped
if ( ferror( file ) )
return blargg_err_file_io;
if ( fseek( file, 0, SEEK_END ) )
return blargg_err_file_io;
*eof = ftell( file );
if ( *eof < 0 )
return blargg_err_file_io;
}
else
{
// Gzipped; get uncompressed size from end
if ( fseek( file, -h_size, SEEK_END ) )
return blargg_err_file_io;
if ( fread( h, 1, h_size, file ) != (size_t) h_size )
return blargg_err_file_io;
*eof = get_le32( h );
}
if ( fclose( file ) )
check( false );
return blargg_ok;
}
Gzip_File_Reader::Gzip_File_Reader()
{
file_ = NULL;
}
Gzip_File_Reader::~Gzip_File_Reader()
{
close();
}
blargg_err_t Gzip_File_Reader::open( const char path [] )
{
close();
long s;
RETURN_ERR( get_gzip_eof( path, &s ) );
file_ = gzopen( path, "rb" );
if ( !file_ )
return blargg_err_file_read;
set_size( s );
return blargg_ok;
}
static blargg_err_t convert_gz_error( gzFile file )
{
int err;
gzerror( file, &err );
switch ( err )
{
case Z_STREAM_ERROR: break;
case Z_DATA_ERROR: return blargg_err_file_corrupt;
case Z_MEM_ERROR: return blargg_err_memory;
case Z_BUF_ERROR: break;
}
return blargg_err_internal;
}
blargg_err_t Gzip_File_Reader::read_v( void* p, int s )
{
int result = gzread( file_, p, s );
if ( result != s )
{
if ( result < 0 )
return convert_gz_error( file_ );
return blargg_err_file_corrupt;
}
return blargg_ok;
}
blargg_err_t Gzip_File_Reader::seek_v( int n )
{
if ( gzseek( file_, n, SEEK_SET ) < 0 )
return convert_gz_error( file_ );
return blargg_ok;
}
void Gzip_File_Reader::close()
{
if ( file_ )
{
if ( gzclose( file_ ) )
check( false );
file_ = NULL;
}
}
#endif

264
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@ -1,264 +0,0 @@
// Lightweight interface for reading data from byte stream
// File_Extractor 1.0.0
#ifndef DATA_READER_H
#define DATA_READER_H
#include "blargg_common.h"
/* Some functions accept a long instead of int for convenience where caller has
a long due to some other interface, and would otherwise have to get a warning,
or cast it (and verify that it wasn't outside the range of an int).
To really support huge (>2GB) files, long isn't a solution, since there's no
guarantee it's more than 32 bits. We'd need to use long long (if available), or
something compiler-specific, and change all places file sizes or offsets are
used. */
// Supports reading and finding out how many bytes are remaining
class Data_Reader {
public:
// Reads min(*n,remain()) bytes and sets *n to this number, thus trying to read more
// tham remain() bytes doesn't result in error, just *n being set to remain().
blargg_err_t read_avail( void* p, int* n );
blargg_err_t read_avail( void* p, long* n );
// Reads exactly n bytes, or returns error if they couldn't ALL be read.
// Reading past end of file results in blargg_err_file_eof.
blargg_err_t read( void* p, int n );
// Number of bytes remaining until end of file
int remain() const { return remain_; }
// Reads and discards n bytes. Skipping past end of file results in blargg_err_file_eof.
blargg_err_t skip( int n );
virtual ~Data_Reader() { }
private:
// noncopyable
Data_Reader( const Data_Reader& );
Data_Reader& operator = ( const Data_Reader& );
// Derived interface
protected:
Data_Reader() : remain_( 0 ) { }
// Sets remain
void set_remain( int n ) { assert( n >= 0 ); remain_ = n; }
// Do same as read(). Guaranteed that 0 < n <= remain(). Value of remain() is updated
// AFTER this call succeeds, not before. set_remain() should NOT be called from this.
virtual blargg_err_t read_v( void*, int n ) BLARGG_PURE( { (void)n; return blargg_ok; } )
// Do same as skip(). Guaranteed that 0 < n <= remain(). Default just reads data
// and discards it. Value of remain() is updated AFTER this call succeeds, not
// before. set_remain() should NOT be called from this.
virtual blargg_err_t skip_v( int n );
// Implementation
public:
BLARGG_DISABLE_NOTHROW
private:
int remain_;
};
// Supports seeking in addition to Data_Reader operations
class File_Reader : public Data_Reader {
public:
// Size of file
int size() const { return size_; }
// Current position in file
int tell() const { return size_ - remain(); }
// Goes to new position
blargg_err_t seek( int );
// Derived interface
protected:
// Sets size and resets position
void set_size( int n ) { size_ = n; Data_Reader::set_remain( n ); }
void set_size( long n ) { set_size( STATIC_CAST(int, n) ); }
// Sets reported position
void set_tell( int i ) { assert( 0 <= i && i <= size_ ); Data_Reader::set_remain( size_ - i ); }
// Do same as seek(). Guaranteed that 0 <= n <= size(). Value of tell() is updated
// AFTER this call succeeds, not before. set_* functions should NOT be called from this.
virtual blargg_err_t seek_v( int n ) BLARGG_PURE( { (void)n; return blargg_ok; } )
// Implementation
protected:
File_Reader() : size_( 0 ) { }
virtual blargg_err_t skip_v( int );
private:
int size_;
void set_remain(); // avoid accidental use of set_remain
};
// Reads from file on disk
class Std_File_Reader : public File_Reader {
public:
// Opens file
blargg_err_t open( const char path [] );
// Closes file if one was open
void close();
// Switches to unbuffered mode. Useful if buffering is already being
// done at a higher level.
void make_unbuffered();
// Implementation
public:
Std_File_Reader();
virtual ~Std_File_Reader();
protected:
virtual blargg_err_t read_v( void*, int );
virtual blargg_err_t seek_v( int );
private:
void* file_;
};
// Treats range of memory as a file
class Mem_File_Reader : public File_Reader {
public:
Mem_File_Reader( const void* begin, long size );
// Implementation
protected:
virtual blargg_err_t read_v( void*, int );
virtual blargg_err_t seek_v( int );
private:
const char* const begin;
};
// Allows only count bytes to be read from reader passed
class Subset_Reader : public Data_Reader {
public:
Subset_Reader( Data_Reader*, int count );
// Implementation
protected:
virtual blargg_err_t read_v( void*, int );
private:
Data_Reader* const in;
};
// Joins already-read header and remaining data into original file.
// Meant for cases where you've already read header and don't want
// to seek and re-read data (for efficiency).
class Remaining_Reader : public Data_Reader {
public:
Remaining_Reader( void const* header, int header_size, Data_Reader* );
// Implementation
protected:
virtual blargg_err_t read_v( void*, int );
private:
Data_Reader* const in;
void const* header;
int header_remain;
};
// Invokes callback function to read data
extern "C" { // necessary to be usable from C
typedef const char* (*callback_reader_func_t)(
void* user_data, // Same value passed to constructor
void* out, // Buffer to place data into
int count // Number of bytes to read
);
}
class Callback_Reader : public Data_Reader {
public:
typedef callback_reader_func_t callback_t;
Callback_Reader( callback_t, long size, void* user_data );
// Implementation
protected:
virtual blargg_err_t read_v( void*, int );
private:
callback_t const callback;
void* const user_data;
};
// Invokes callback function to read data
extern "C" { // necessary to be usable from C
typedef const char* (*callback_file_reader_func_t)(
void* user_data, // Same value passed to constructor
void* out, // Buffer to place data into
int count, // Number of bytes to read
int pos // Position in file to read from
);
}
class Callback_File_Reader : public File_Reader {
public:
typedef callback_file_reader_func_t callback_t;
Callback_File_Reader( callback_t, long size, void* user_data );
// Implementation
protected:
virtual blargg_err_t read_v( void*, int );
virtual blargg_err_t seek_v( int );
private:
callback_t const callback;
void* const user_data;
};
#ifdef HAVE_ZLIB_H
// Reads file compressed with gzip (or uncompressed)
class Gzip_File_Reader : public File_Reader {
public:
// Opens possibly gzipped file
blargg_err_t open( const char path [] );
// Closes file if one was open
void close();
// Implementation
public:
Gzip_File_Reader();
~Gzip_File_Reader();
protected:
virtual blargg_err_t read_v( void*, int );
virtual blargg_err_t seek_v( int );
private:
// void* so "zlib.h" doesn't have to be included here
void* file_;
};
#endif
char* blargg_to_utf8( const wchar_t* );
wchar_t* blargg_to_wide( const char* );
#endif

341
fex/fex/File_Extractor.cpp
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@ -1,341 +0,0 @@
// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "File_Extractor.h"
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
File_Extractor::fex_t( fex_type_t t ) :
type_( t )
{
own_file_ = NULL;
close_();
}
// Open
blargg_err_t File_Extractor::set_path( const char* path )
{
if ( !path )
path = "";
RETURN_ERR( path_.resize( strlen( path ) + 1 ) );
memcpy( path_.begin(), path, path_.size() );
return blargg_ok;
}
blargg_err_t File_Extractor::open( const char path [] )
{
close();
RETURN_ERR( set_path( path ) );
blargg_err_t err = open_path_v();
if ( err )
close();
else
opened_ = true;
return err;
}
blargg_err_t File_Extractor::open_path_v()
{
RETURN_ERR( open_arc_file() );
return open_v();
}
inline
static void make_unbuffered( Std_File_Reader* r )
{
r->make_unbuffered();
}
inline
static void make_unbuffered( void* )
{ }
blargg_err_t File_Extractor::open_arc_file( bool unbuffered )
{
if ( reader_ )
return blargg_ok;
FEX_FILE_READER* in = BLARGG_NEW FEX_FILE_READER;
CHECK_ALLOC( in );
blargg_err_t err = in->open( arc_path() );
if ( err )
{
delete in;
}
else
{
reader_ = in;
own_file();
if ( unbuffered )
make_unbuffered( in );
}
return err;
}
blargg_err_t File_Extractor::open( File_Reader* input, const char* path )
{
close();
RETURN_ERR( set_path( path ) );
RETURN_ERR( input->seek( 0 ) );
reader_ = input;
blargg_err_t err = open_v();
if ( err )
close();
else
opened_ = true;
return err;
}
// Close
void File_Extractor::close()
{
close_v();
close_();
}
void File_Extractor::close_()
{
delete own_file_;
own_file_ = NULL;
tell_ = 0;
reader_ = NULL;
opened_ = false;
path_.clear();
clear_file();
}
File_Extractor::~fex_t()
{
check( !opened() ); // fails if derived destructor didn't call close()
delete own_file_;
}
// Scanning
void File_Extractor::clear_file()
{
name_ = NULL;
wname_ = NULL;
done_ = true;
stat_called = false;
data_ptr_ = NULL;
set_info( 0 );
own_data_.clear();
clear_file_v();
}
void File_Extractor::set_name( const char new_name [], const wchar_t* new_wname )
{
name_ = new_name;
wname_ = new_wname;
done_ = false;
}
void File_Extractor::set_info( int new_size, unsigned date, unsigned crc )
{
size_ = new_size;
date_ = (date != 0xFFFFFFFF ? date : 0);
crc32_ = crc;
set_remain( new_size );
}
blargg_err_t File_Extractor::next_()
{
tell_++;
clear_file();
blargg_err_t err = next_v();
if ( err )
clear_file();
return err;
}
blargg_err_t File_Extractor::next()
{
assert( !done() );
return next_();
}
blargg_err_t File_Extractor::rewind()
{
assert( opened() );
tell_ = 0;
clear_file();
blargg_err_t err = rewind_v();
if ( err )
clear_file();
return err;
}
blargg_err_t File_Extractor::stat()
{
assert( !done() );
if ( !stat_called )
{
RETURN_ERR( stat_v() );
stat_called = true;
}
return blargg_ok;
}
// Tell/seek
int const pos_offset = 1;
fex_pos_t File_Extractor::tell_arc() const
{
assert( opened() );
fex_pos_t pos = tell_arc_v();
assert( pos >= 0 );
return pos + pos_offset;
}
blargg_err_t File_Extractor::seek_arc( fex_pos_t pos )
{
assert( opened() );
assert( pos != 0 );
clear_file();
blargg_err_t err = seek_arc_v( pos - pos_offset );
if ( err )
clear_file();
return err;
}
fex_pos_t File_Extractor::tell_arc_v() const
{
return tell_;
}
blargg_err_t File_Extractor::seek_arc_v( fex_pos_t pos )
{
// >= because seeking to current file should always reset read pointer etc.
if ( tell_ >= pos )
RETURN_ERR( rewind() );
while ( tell_ < pos )
{
RETURN_ERR( next_() );
if ( done() )
{
assert( false );
return blargg_err_caller;
}
}
assert( tell_ == pos );
return blargg_ok;
}
// Extraction
blargg_err_t File_Extractor::rewind_file()
{
RETURN_ERR( stat() );
if ( tell() > 0 )
{
if ( data_ptr_ )
{
set_remain( size() );
}
else
{
RETURN_ERR( seek_arc( tell_arc() ) );
RETURN_ERR( stat() );
}
}
return blargg_ok;
}
blargg_err_t File_Extractor::data( const void** data_out )
{
assert( !done() );
*data_out = NULL;
if ( !data_ptr_ )
{
int old_tell = tell();
RETURN_ERR( rewind_file() );
void const* ptr;
RETURN_ERR( data_v( &ptr ) );
data_ptr_ = ptr;
// Now that data is in memory, we can seek by simply setting remain
set_remain( size() - old_tell );
}
*data_out = data_ptr_;
return blargg_ok;
}
blargg_err_t File_Extractor::data_v( void const** out )
{
RETURN_ERR( own_data_.resize( size() ) );
*out = own_data_.begin();
blargg_err_t err = extract_v( own_data_.begin(), own_data_.size() );
if ( err )
own_data_.clear();
return err;
}
blargg_err_t File_Extractor::extract_v( void* out, int count )
{
void const* p;
RETURN_ERR( data( &p ) );
memcpy( out, STATIC_CAST(char const*,p) + (size() - remain()), count );
return blargg_ok;
}
blargg_err_t File_Extractor::read_v( void* out, int count )
{
if ( data_ptr_ )
return File_Extractor::extract_v( out, count );
return extract_v( out, count );
}

191
fex/fex/File_Extractor.h
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@ -1,191 +0,0 @@
// Compressed file archive interface
// File_Extractor 1.0.0
#ifndef FILE_EXTRACTOR_H
#define FILE_EXTRACTOR_H
#include "blargg_common.h"
#include "Data_Reader.h"
#include "fex.h"
struct fex_t : private Data_Reader {
public:
virtual ~fex_t();
// Open/close
// Opens archive from custom data source. Keeps pointer until close().
blargg_err_t open( File_Reader* input, const char* path = NULL );
// Takes ownership of File_Reader* passed to open(), so that close()
// will delete it.
void own_file() { own_file_ = reader_; }
// See fex.h
blargg_err_t open( const char path [] );
fex_type_t type() const { return type_; }
void close();
// Scanning
// See fex.h
bool done() const { return done_; }
blargg_err_t next();
blargg_err_t rewind();
fex_pos_t tell_arc() const;
blargg_err_t seek_arc( fex_pos_t );
// Info
// See fex.h
const char* name() const { return name_; }
const wchar_t* wname() const { return wname_; }
blargg_err_t stat();
int size() const { assert( stat_called ); return size_; }
unsigned int dos_date() const { return date_; }
unsigned int crc32() const { return crc32_; }
// Extraction
// Data_Reader to current file's data, so standard Data_Reader interface can
// be used, rather than having to treat archives specially. stat() must have
// been called.
Data_Reader& reader() { assert( stat_called ); return *this; }
// See fex.h
blargg_err_t data( const void** data_out );
int tell() const { return size_ - remain(); }
// Derived interface
protected:
// Sets type of object
fex_t( fex_type_t );
// Path to archive file, or "" if none supplied
const char* arc_path() const { return path_.begin(); }
// Opens archive file if it's not already. If unbuffered is true, opens file
// without any buffering.
blargg_err_t open_arc_file( bool unbuffered = false );
// Archive file
File_Reader& arc() const { return *reader_; }
// Sets current file name
void set_name( const char name [], const wchar_t* wname = NULL );
// Sets current file information
void set_info( int size, unsigned date = 0, unsigned crc = 0 );
// User overrides
// Overrides must do indicated task. Non-pure functions have reasonable default
// implementation. Overrides should avoid calling public functions like
// next() and rewind().
// Open archive using file_path(). OK to delay actual file opening until later.
// Default just calls open_arc_file(), then open_v().
virtual blargg_err_t open_path_v();
// Open archive using file() for source data. If unsupported, return error.
virtual blargg_err_t open_v() BLARGG_PURE( ; )
// Go to next file in archive and call set_name() and optionally set_info()
virtual blargg_err_t next_v() BLARGG_PURE( ; )
// Go back to first file in archive
virtual blargg_err_t rewind_v() BLARGG_PURE( ; )
// Close archive. Called even if open_path_v() or open_v() return unsuccessfully.
virtual void close_v() BLARGG_PURE( ; )
// Clear any fields related to current file
virtual void clear_file_v() { }
// Call set_info() if not already called by next_v()
virtual blargg_err_t stat_v() { return blargg_ok; }
// Return value that allows later return to this file. Result must be >= 0.
virtual fex_pos_t tell_arc_v() const;
// Return to previously saved position
virtual blargg_err_t seek_arc_v( fex_pos_t );
// One or both of the following must be overridden
// Provide pointer to data for current file in archive
virtual blargg_err_t data_v( const void** out );
// Extract next n bytes
virtual blargg_err_t extract_v( void* out, int n );
// Implementation
public:
BLARGG_DISABLE_NOTHROW
private:
fex_type_t const type_;
// Archive file
blargg_vector<char> path_;
File_Reader* reader_;
File_Reader* own_file_;
bool opened_;
// Position in archive
fex_pos_t tell_; // only used by default implementation of tell/seek
bool done_;
// Info for current file in archive
const char* name_;
const wchar_t* wname_;
unsigned date_;
unsigned crc32_;
int size_;
bool stat_called;
// Current file contents
void const* data_ptr_; // NULL if not read into memory
blargg_vector<char> own_data_;
bool opened() const { return opened_; }
void clear_file();
void close_();
blargg_err_t set_path( const char* path );
blargg_err_t rewind_file();
blargg_err_t next_();
// Data_Reader overrides
// TODO: override skip_v?
virtual blargg_err_t read_v( void* out, int n );
};
struct fex_type_t_
{
const char* extension;
File_Extractor* (*new_fex)();
const char* name;
blargg_err_t (*init)(); // Called by fex_init(). Can be NULL.
};
extern const fex_type_t_
fex_7z_type [1],
fex_gz_type [1],
fex_rar_type [1],
fex_zip_type [1],
fex_bin_type [1];
inline blargg_err_t File_Extractor::open_v() { return blargg_ok; }
inline blargg_err_t File_Extractor::next_v() { return blargg_ok; }
inline blargg_err_t File_Extractor::rewind_v() { return blargg_ok; }
inline void File_Extractor::close_v() { }
// Default to Std_File_Reader for archive access
#ifndef FEX_FILE_READER
#define FEX_FILE_READER Std_File_Reader
#elif defined (FEX_FILE_READER_INCLUDE)
#include FEX_FILE_READER_INCLUDE
#endif
#endif

98
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@ -1,98 +0,0 @@
// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Gzip_Extractor.h"
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
// TODO: could close file once data has been read into memory
static blargg_err_t init_gzip_file()
{
get_crc_table(); // initialize zlib's CRC-32 tables
return blargg_ok;
}
static File_Extractor* new_gzip()
{
return BLARGG_NEW Gzip_Extractor;
}
fex_type_t_ const fex_gz_type [1] = {{
".gz",
&new_gzip,
"gzipped file",
&init_gzip_file
}};
Gzip_Extractor::Gzip_Extractor() :
File_Extractor( fex_gz_type )
{ }
Gzip_Extractor::~Gzip_Extractor()
{
close();
}
blargg_err_t Gzip_Extractor::open_path_v()
{
// skip opening file
return open_v();
}
blargg_err_t Gzip_Extractor::stat_v()
{
RETURN_ERR( open_arc_file( true ) );
if ( !gr.opened() || gr.tell() != 0 )
RETURN_ERR( gr.open( &arc() ) );
set_info( gr.remain(), 0, gr.crc32() );
return blargg_ok;
}
blargg_err_t Gzip_Extractor::open_v()
{
// Remove .gz suffix
size_t len = strlen( arc_path() );
if ( fex_has_extension( arc_path(), ".gz" ) )
len -= 3;
RETURN_ERR( name.resize( len + 1 ) );
memcpy( name.begin(), arc_path(), name.size() );
name [name.size() - 1] = '\0';
set_name( name.begin() );
return blargg_ok;
}
void Gzip_Extractor::close_v()
{
name.clear();
gr.close();
}
blargg_err_t Gzip_Extractor::next_v()
{
return blargg_ok;
}
blargg_err_t Gzip_Extractor::rewind_v()
{
set_name( name.begin() );
return blargg_ok;
}
blargg_err_t Gzip_Extractor::extract_v( void* p, int n )
{
return gr.read( p, n );
}

34
fex/fex/Gzip_Extractor.h
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// Presents a gzipped file as an "archive" of just that file.
// Also handles non-gzipped files.
// File_Extractor 1.0.0
#ifndef GZIP_EXTRACTOR_H
#define GZIP_EXTRACTOR_H
#include "File_Extractor.h"
#include "Gzip_Reader.h"
class Gzip_Extractor : public File_Extractor {
public:
Gzip_Extractor();
virtual ~Gzip_Extractor();
protected:
virtual blargg_err_t open_path_v();
virtual blargg_err_t open_v();
virtual void close_v();
virtual blargg_err_t next_v();
virtual blargg_err_t rewind_v();
virtual blargg_err_t stat_v();
virtual blargg_err_t extract_v( void*, int );
private:
Gzip_Reader gr;
blargg_vector<char> name;
void set_info_();
};
#endif

85
fex/fex/Gzip_Reader.cpp
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@ -1,85 +0,0 @@
// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Gzip_Reader.h"
#include "blargg_endian.h"
/* Copyright (C) 2006-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
Gzip_Reader::Gzip_Reader()
{
close();
}
Gzip_Reader::~Gzip_Reader()
{ }
static blargg_err_t gzip_reader_read( void* file, void* out, int* count )
{
return STATIC_CAST(File_Reader*,file)->read_avail( out, count );
}
blargg_err_t Gzip_Reader::calc_size()
{
size_ = in->size();
crc32_ = 0;
if ( inflater.deflated() )
{
byte trailer [8];
int old_pos = in->tell();
RETURN_ERR( in->seek( size_ - sizeof trailer ) );
RETURN_ERR( in->read( trailer, sizeof trailer ) );
RETURN_ERR( in->seek( old_pos ) );
crc32_ = get_le32( trailer + 0 );
unsigned n = get_le32( trailer + 4 );
if ( n > INT_MAX )
return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "gzip larger than 2GB" );
size_ = n;
}
return blargg_ok;
}
blargg_err_t Gzip_Reader::open( File_Reader* new_in )
{
close();
in = new_in;
RETURN_ERR( in->seek( 0 ) );
RETURN_ERR( inflater.begin( gzip_reader_read, new_in ) );
RETURN_ERR( inflater.set_mode( inflater.mode_auto ) );
RETURN_ERR( calc_size() );
set_remain( size_ );
return blargg_ok;
}
void Gzip_Reader::close()
{
in = NULL;
inflater.end();
}
blargg_err_t Gzip_Reader::read_v( void* out, int count )
{
assert( in );
int actual = count;
RETURN_ERR( inflater.read( out, &actual ) );
if ( actual != count )
return blargg_err_file_corrupt;
return blargg_ok;
}

46
fex/fex/Gzip_Reader.h
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// Transparently decompresses gzip files, as well as uncompressed
// File_Extractor 1.0.0
#ifndef GZIP_READER_H
#define GZIP_READER_H
#include "Data_Reader.h"
#include "Zlib_Inflater.h"
class Gzip_Reader : public Data_Reader {
public:
// Keeps pointer to reader until close(). If
blargg_err_t open( File_Reader* );
// True if file is open
bool opened() const { return in != NULL; }
// Frees memory
void close();
// True if file is compressed
bool deflated() const { return inflater.deflated(); }
// CRC-32 of data, of 0 if unavailable
unsigned int crc32() const { return crc32_; }
// Number of bytes read since opening
int tell() const { return size_ - remain(); }
public:
Gzip_Reader();
virtual ~Gzip_Reader();
protected:
virtual blargg_err_t read_v( void*, int );
private:
File_Reader* in;
unsigned crc32_;
int size_;
Zlib_Inflater inflater;
blargg_err_t calc_size();
};
#endif

197
fex/fex/Rar_Extractor.cpp
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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "blargg_common.h"
#if FEX_ENABLE_RAR
#include "Rar_Extractor.h"
/* Copyright (C) 2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
static blargg_err_t init_rar()
{
unrar_init();
return blargg_ok;
}
static File_Extractor* new_rar()
{
return BLARGG_NEW Rar_Extractor;
}
fex_type_t_ const fex_rar_type [1] = {{
".rar",
&new_rar,
"RAR archive",
&init_rar
}};
blargg_err_t Rar_Extractor::convert_err( unrar_err_t err )
{
blargg_err_t reader_err = reader.err;
reader.err = blargg_ok;
if ( reader_err )
check( err == unrar_next_err );
switch ( err )
{
case unrar_ok: return blargg_ok;
case unrar_err_memory: return blargg_err_memory;
case unrar_err_open: return blargg_err_file_read;
case unrar_err_not_arc: return blargg_err_file_type;
case unrar_err_corrupt: return blargg_err_file_corrupt;
case unrar_err_io: return blargg_err_file_io;
case unrar_err_arc_eof: return blargg_err_internal;
case unrar_err_encrypted: return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "RAR encryption not supported" );
case unrar_err_segmented: return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "RAR segmentation not supported" );
case unrar_err_huge: return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "Huge RAR files not supported" );
case unrar_err_old_algo: return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "Old RAR compression not supported" );
case unrar_err_new_algo: return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "RAR uses unknown newer compression" );
case unrar_next_err: break;
default:
check( false ); // unhandled RAR error
}
if ( reader_err )
return reader_err;
check( false );
return BLARGG_ERR( BLARGG_ERR_INTERNAL, "RAR archive" );
}
static inline unrar_err_t handle_err( Rar_Extractor::read_callback_t* h, blargg_err_t err )
{
if ( !err )
return unrar_ok;
h->err = err;
return unrar_next_err;
}
extern "C"
{
static unrar_err_t my_unrar_read( void* data, void* out, int* count, unrar_pos_t pos )
{
// TODO: 64-bit file support
Rar_Extractor::read_callback_t* h = STATIC_CAST(Rar_Extractor::read_callback_t*,data);
if ( h->pos != pos )
{
blargg_err_t err = h->in->seek( pos );
if ( err )
return handle_err( h, err );
h->pos = pos;
}
blargg_err_t err = h->in->read_avail( out, count );
if ( err )
return handle_err( h, err );
h->pos += *count;
return unrar_ok;
}
}
Rar_Extractor::Rar_Extractor() :
File_Extractor( fex_rar_type )
{
unrar = NULL;
}
Rar_Extractor::~Rar_Extractor()
{
close();
}
blargg_err_t Rar_Extractor::open_v()
{
reader.pos = 0;
reader.in = &arc();
reader.err = blargg_ok;
RETURN_ERR( arc().seek( 0 ) );
RETURN_ERR( convert_err( unrar_open_custom( &unrar, &my_unrar_read, &reader ) ) );
return skip_unextractables();
}
void Rar_Extractor::close_v()
{
unrar_close( unrar );
unrar = NULL;
reader.in = NULL;
}
blargg_err_t Rar_Extractor::skip_unextractables()
{
while ( !unrar_done( unrar ) && unrar_try_extract( unrar ) )
RETURN_ERR( next_raw() );
if ( !unrar_done( unrar ) )
{
unrar_info_t const* info = unrar_info( unrar );
set_name( info->name, (info->name_w && *info->name_w) ? info->name_w : NULL );
set_info( info->size, info->dos_date, (info->is_crc32 ? info->crc : 0) );
}
return blargg_ok;
}
blargg_err_t Rar_Extractor::next_raw()
{
return convert_err( unrar_next( unrar ) );
}
blargg_err_t Rar_Extractor::next_v()
{
RETURN_ERR( next_raw() );
return skip_unextractables();
}
blargg_err_t Rar_Extractor::rewind_v()
{
RETURN_ERR( convert_err( unrar_rewind( unrar ) ) );
return skip_unextractables();
}
fex_pos_t Rar_Extractor::tell_arc_v() const
{
return unrar_tell( unrar );
}
blargg_err_t Rar_Extractor::seek_arc_v( fex_pos_t pos )
{
RETURN_ERR( convert_err( unrar_seek( unrar, pos ) ) );
return skip_unextractables();
}
blargg_err_t Rar_Extractor::data_v( void const** out )
{
return convert_err( unrar_extract_mem( unrar, out ) );
}
blargg_err_t Rar_Extractor::extract_v( void* out, int count )
{
// We can read entire file directly into user buffer
if ( count == size() )
return convert_err( unrar_extract( unrar, out, count ) );
// This will call data_v() and copy from that buffer for us
return File_Extractor::extract_v( out, count );
}
#endif

43
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// RAR archive extractor
// File_Extractor 1.0.0
#ifndef RAR_EXTRACTOR_H
#define RAR_EXTRACTOR_H
#include "File_Extractor.h"
#include "unrar/unrar.h"
class Rar_Extractor : public File_Extractor {
public:
Rar_Extractor();
virtual ~Rar_Extractor();
struct read_callback_t
{
const char* err;
int pos;
File_Reader* in;
};
protected:
virtual blargg_err_t open_v();
virtual void close_v();
virtual blargg_err_t next_v();
virtual blargg_err_t rewind_v();
virtual fex_pos_t tell_arc_v() const;
virtual blargg_err_t seek_arc_v( fex_pos_t );
virtual blargg_err_t data_v( void const** );
virtual blargg_err_t extract_v( void*, int );
private:
unrar_t* unrar;
read_callback_t reader;
blargg_err_t convert_err( unrar_err_t );
blargg_err_t skip_unextractables();
blargg_err_t next_raw();
};
#endif

354
fex/fex/Zip7_Extractor.cpp
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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Zip7_Extractor.h"
extern "C" {
#include "7z_C/7z.h"
#include "7z_C/7zAlloc.h"
#include "7z_C/7zCrc.h"
}
#include <time.h>
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
static ISzAlloc zip7_alloc = { SzAlloc, SzFree };
static ISzAlloc zip7_alloc_temp = { SzAllocTemp, SzFreeTemp };
struct Zip7_Extractor_Impl :
ISeekInStream
{
CLookToRead look;
CSzArEx db;
// SzExtract state
UInt32 block_index;
Byte* buf;
size_t buf_size;
File_Reader* in;
const char* in_err;
};
extern "C"
{
// 7-zip callbacks pass an ISeekInStream* for data, so we must cast it
// back to ISeekInStream* FIRST, then cast to our Impl structure
static SRes zip7_read_( void* vstream, void* out, size_t* size )
{
assert( out && size );
ISeekInStream* stream = STATIC_CAST(ISeekInStream*,vstream);
Zip7_Extractor_Impl* impl = STATIC_CAST(Zip7_Extractor_Impl*,stream);
long lsize = *size;
blargg_err_t err = impl->in->read_avail( out, &lsize );
if ( err )
{
*size = 0;
impl->in_err = err;
return SZ_ERROR_READ;
}
*size = lsize;
return SZ_OK;
}
static SRes zip7_seek_( void* vstream, Int64* pos, ESzSeek mode )
{
ISeekInStream* stream = STATIC_CAST(ISeekInStream*,vstream);
Zip7_Extractor_Impl* impl = STATIC_CAST(Zip7_Extractor_Impl*,stream);
// assert( mode != SZ_SEEK_CUR ); // never used
if ( mode == SZ_SEEK_END )
{
assert( *pos == 0 ); // only used to find file length
*pos = impl->in->size();
return SZ_OK;
}
// assert( mode == SZ_SEEK_SET );
blargg_err_t err = impl->in->seek( *pos );
if ( err )
{
// don't set in_err in this case, since it might be benign
if ( err == blargg_err_file_eof )
return SZ_ERROR_INPUT_EOF;
impl->in_err = err;
return SZ_ERROR_READ;
}
return SZ_OK;
}
}
blargg_err_t Zip7_Extractor::zip7_err( int err )
{
// TODO: ignore in_err in some cases? unsure about which error to use
blargg_err_t in_err = impl->in_err;
impl->in_err = NULL;
if ( in_err )
{
check( err != SZ_OK );
return in_err;
}
switch ( err )
{
case SZ_OK: return blargg_ok;
case SZ_ERROR_MEM: return blargg_err_memory;
case SZ_ERROR_READ: return blargg_err_file_io;
case SZ_ERROR_CRC:
case SZ_ERROR_DATA:
case SZ_ERROR_INPUT_EOF:
case SZ_ERROR_ARCHIVE: return blargg_err_file_corrupt;
case SZ_ERROR_UNSUPPORTED: return blargg_err_file_feature;
case SZ_ERROR_NO_ARCHIVE: return blargg_err_file_type;
}
return blargg_err_generic;
}
static blargg_err_t init_7z()
{
static bool inited;
if ( !inited )
{
inited = true;
CrcGenerateTable();
}
return blargg_ok;
}
static File_Extractor* new_7z()
{
return BLARGG_NEW Zip7_Extractor;
}
fex_type_t_ const fex_7z_type [1] = {{
".7z",
&new_7z,
"7-zip archive",
&init_7z
}};
Zip7_Extractor::Zip7_Extractor() :
File_Extractor( fex_7z_type )
{
impl = NULL;
}
Zip7_Extractor::~Zip7_Extractor()
{
close();
}
blargg_err_t Zip7_Extractor::open_v()
{
RETURN_ERR( init_7z() );
if ( !impl )
{
impl = (Zip7_Extractor_Impl*) malloc( sizeof *impl );
CHECK_ALLOC( impl );
}
impl->in = &arc();
impl->block_index = (UInt32) -1;
impl->buf = NULL;
impl->buf_size = 0;
LookToRead_CreateVTable( &impl->look, false );
impl->ISeekInStream::Read = zip7_read_;
impl->ISeekInStream::Seek = zip7_seek_;
impl->look.realStream = impl;
LookToRead_Init( &impl->look );
SzArEx_Init( &impl->db );
impl->in_err = NULL;
RETURN_ERR( zip7_err( SzArEx_Open( &impl->db, &impl->look.s,
&zip7_alloc, &zip7_alloc_temp ) ) );
return seek_arc_v( 0 );
}
void Zip7_Extractor::close_v()
{
if ( impl )
{
if ( impl->in )
{
impl->in = NULL;
SzArEx_Free( &impl->db, &zip7_alloc );
}
IAlloc_Free( &zip7_alloc, impl->buf );
free( impl );
impl = NULL;
}
}
// This method was taken from ogre-7z (thanks), and is thus LGPL
bool Zip7_Extractor::utf16ToUtf8( unsigned char* dest, size_t* destLen, const short* src, size_t srcLen )
{
static const unsigned char sUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
size_t destPos = 0, srcPos = 0;
for(;;)
{
unsigned int numAdds;
unsigned long value;
if( srcPos == srcLen )
{
*destLen = destPos;
return true;
}
value = src[srcPos++];
if( value < 0x80 )
{
if( dest )
{
dest[destPos] = (char)value;
}
destPos++;
continue;
}
if( value >= 0xD800 && value < 0xE000 )
{
unsigned long c2;
if( value >= 0xDC00 || srcPos == srcLen )
break;
c2 = src[srcPos++];
if( c2 < 0xDC00 || c2 >= 0xE000 )
break;
value = (((value - 0xD800) << 10) | (c2 - 0xDC00)) + 0x10000;
}
for( numAdds = 1; numAdds < 5; numAdds++ )
{
if( value < (((UInt32)1) << (numAdds * 5 + 6)) )
break;
}
if( dest )
{
dest[destPos] = (char)(sUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
}
destPos++;
do
{
numAdds--;
if( dest )
{
dest[destPos] = (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
}
destPos++;
}
while( numAdds != 0 );
}
*destLen = destPos;
return false;
}
blargg_err_t Zip7_Extractor::next_v()
{
while ( ++index < (int) impl->db.db.NumFiles )
{
CSzFileItem const& item = impl->db.db.Files [index];
if ( !item.IsDir )
{
unsigned long date = 0;
if ( item.MTimeDefined )
{
const UInt64 epoch = ((UInt64)0x019db1de << 32) + 0xd53e8000;
/* 0x019db1ded53e8000ULL: 1970-01-01 00:00:00 (UTC) */
struct tm tm;
UInt64 time = ((UInt64)item.MTime.High << 32) + item.MTime.Low - epoch;
time /= 1000000;
time_t _time = time;
#ifdef _WIN32
tm = *localtime( &_time );
#else
localtime_r( &_time, &tm );
#endif
date = (( tm.tm_sec >> 1 ) & 0x1F) |
(( tm.tm_min & 0x3F ) << 5 ) |
(( tm.tm_hour & 0x1F ) << 11 ) |
(( tm.tm_mday & 0x1F ) << 16 ) |
(( ( tm.tm_mon + 1 ) & 0x0F ) << 21 ) |
(( ( tm.tm_year - 80 ) & 0x7F ) << 25 );
}
size_t name_length = SzArEx_GetFileNameUtf16( &impl->db, index, 0 );
size_t utf8_length = 0;
name16.resize( name_length );
SzArEx_GetFileNameUtf16( &impl->db, index, ( UInt16 * ) name16.begin() );
unsigned char temp[1024];
utf16ToUtf8( temp, &utf8_length, (const short*)name16.begin(), name_length - 1 );
temp[utf8_length] = '\0';
name8.resize( utf8_length + 1 );
memcpy( name8.begin(), temp, utf8_length + 1 );
set_name( name8.begin(), name16.begin() );
set_info( item.Size, 0, (item.CrcDefined ? item.Crc : 0) );
break;
}
}
return blargg_ok;
}
blargg_err_t Zip7_Extractor::rewind_v()
{
return seek_arc_v( 0 );
}
fex_pos_t Zip7_Extractor::tell_arc_v() const
{
return index;
}
blargg_err_t Zip7_Extractor::seek_arc_v( fex_pos_t pos )
{
assert( 0 <= pos && pos <= (int) impl->db.db.NumFiles );
index = pos - 1;
return next_v();
}
blargg_err_t Zip7_Extractor::data_v( void const** out )
{
impl->in_err = NULL;
size_t offset = 0;
size_t count = 0;
RETURN_ERR( zip7_err( SzArEx_Extract( &impl->db, &impl->look.s, index,
&impl->block_index, &impl->buf, &impl->buf_size,
&offset, &count, &zip7_alloc, &zip7_alloc_temp ) ) );
assert( count == (size_t) size() );
*out = impl->buf + offset;
return blargg_ok;
}

38
fex/fex/Zip7_Extractor.h
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@ -1,38 +0,0 @@
// 7-zip archive extractor
// File_Extractor 1.0.0
#ifndef ZIP7_EXTRACTOR_H
#define ZIP7_EXTRACTOR_H
#include "File_Extractor.h"
struct Zip7_Extractor_Impl;
class Zip7_Extractor : public File_Extractor {
public:
Zip7_Extractor();
virtual ~Zip7_Extractor();
protected:
virtual blargg_err_t open_v();
virtual void close_v();
virtual blargg_err_t next_v();
virtual blargg_err_t rewind_v();
virtual fex_pos_t tell_arc_v() const;
virtual blargg_err_t seek_arc_v( fex_pos_t );
virtual blargg_err_t data_v( void const** out );
bool utf16ToUtf8( unsigned char* dest, size_t* destLen, const short* src, size_t srcLen );
private:
Zip7_Extractor_Impl* impl;
int index;
blargg_vector<char> name8;
blargg_vector<wchar_t> name16;
blargg_err_t zip7_err( int err );
};
#endif

390
fex/fex/Zip_Extractor.cpp
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@ -1,390 +0,0 @@
// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Zip_Extractor.h"
#include "blargg_endian.h"
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
/* To avoid copying filename string from catalog, I terminate it by modifying
catalog data. This potentially requires moving the first byte of the type
of the next entry elsewhere; I move it to the first byte of made_by. Kind
of hacky, but I'd rather not have to allocate memory for a copy of it. */
#include "blargg_source.h"
/* Reads this much from end of file when first opening. Only this much is
searched for the end catalog entry. If whole catalog is within this data,
nothing more needs to be read on open. */
int const end_read_size = 8 * 1024;
/* Reads are are made using file offset that's a multiple of this,
increasing performance. */
int const disk_block_size = 4 * 1024;
// Read buffer used for extracting file data
int const read_buf_size = 16 * 1024;
struct header_t
{
char type [4];
byte vers [2];
byte flags [2];
byte method [2];
byte date [4];
byte crc [4];
byte raw_size [4];
byte size [4];
byte filename_len [2];
byte extra_len [2];
char filename [2]; // [filename_len]
//char extra [extra_len];
};
int const header_size = 30;
struct entry_t
{
char type [4];
byte made_by [2];
byte vers [2];
byte flags [2];
byte method [2];
byte date [4];
byte crc [4];
byte raw_size [4];
byte size [4];
byte filename_len [2];
byte extra_len [2];
byte comment_len [2];
byte disk [2];
byte int_attrib [2];
byte ext_attrib [4];
byte file_offset [4];
char filename [2]; // [filename_len]
//char extra [extra_len];
//char comment [comment_len];
};
int const entry_size = 46;
struct end_entry_t
{
char type [4];
byte disk [2];
byte first_disk [2];
byte disk_entry_count [2];
byte entry_count [2];
byte dir_size [4];
byte dir_offset [4];
byte comment_len [2];
char comment [2]; // [comment_len]
};
int const end_entry_size = 22;
static blargg_err_t init_zip()
{
get_crc_table(); // initialize zlib's CRC-32 tables
return blargg_ok;
}
static File_Extractor* new_zip()
{
return BLARGG_NEW Zip_Extractor;
}
fex_type_t_ const fex_zip_type [1] = {{
".zip",
&new_zip,
"ZIP archive",
&init_zip
}};
Zip_Extractor::Zip_Extractor() :
File_Extractor( fex_zip_type )
{
Zip_Extractor::clear_file_v();
// If these fail, structures had extra padding inserted by compiler
assert( offsetof (header_t,filename) == header_size );
assert( offsetof (entry_t,filename) == entry_size );
assert( offsetof (end_entry_t,comment) == end_entry_size );
}
Zip_Extractor::~Zip_Extractor()
{
close();
}
blargg_err_t Zip_Extractor::open_path_v()
{
RETURN_ERR( open_arc_file( true ) );
return File_Extractor::open_path_v();
}
inline
void Zip_Extractor::reorder_entry_header( int offset )
{
catalog [offset + 0] = 0;
catalog [offset + 4] = 'P';
}
blargg_err_t Zip_Extractor::open_v()
{
if ( arc().size() < end_entry_size )
return blargg_err_file_type;
// Read final end_read_size bytes of file
int file_pos = max( 0, arc().size() - end_read_size );
file_pos -= file_pos % disk_block_size;
RETURN_ERR( catalog.resize( arc().size() - file_pos ) );
RETURN_ERR( arc().seek( file_pos ) );
RETURN_ERR( arc().read( catalog.begin(), catalog.size() ) );
// Find end-of-catalog entry
int end_pos = catalog.size() - end_entry_size;
while ( end_pos >= 0 && memcmp( &catalog [end_pos], "PK\5\6", 4 ) )
end_pos--;
if ( end_pos < 0 )
return blargg_err_file_type;
end_entry_t const& end_entry = (end_entry_t&) catalog [end_pos];
end_pos += file_pos;
// some idiotic zip compressors add data to end of zip without setting comment len
// check( arc().size() == end_pos + end_entry_size + get_le16( end_entry.comment_len ) );
// Find file offset of beginning of catalog
catalog_begin = get_le32( end_entry.dir_offset );
int catalog_size = end_pos - catalog_begin;
if ( catalog_size < 0 )
return blargg_err_file_corrupt;
catalog_size += end_entry_size;
// See if catalog is entirely contained in bytes already read
int begin_offset = catalog_begin - file_pos;
if ( begin_offset >= 0 )
memmove( catalog.begin(), &catalog [begin_offset], catalog_size );
RETURN_ERR( catalog.resize( catalog_size ) );
if ( begin_offset < 0 )
{
// Catalog begins before bytes read, so it needs to be read
RETURN_ERR( arc().seek( catalog_begin ) );
RETURN_ERR( arc().read( catalog.begin(), catalog.size() ) );
}
// First entry in catalog should be a file or end of archive
if ( memcmp( catalog.begin(), "PK\1\2", 4 ) && memcmp( catalog.begin(), "PK\5\6", 4 ) )
return blargg_err_file_type;
reorder_entry_header( 0 );
return rewind_v();
}
void Zip_Extractor::close_v()
{
catalog.clear();
}
// Scanning
inline
static bool is_normal_file( entry_t const& e, unsigned len )
{
int last_char = (len ? e.filename [len - 1] : '/');
bool is_dir = (last_char == '/' || last_char == '\\');
if ( is_dir && get_le32( e.size ) == 0 )
return false;
check( !is_dir );
// Mac OS X puts meta-information in separate files with normal extensions,
// so they must be filtered out or caller will mistake them for normal files.
if ( e.made_by[1] == 3 )
{
const char* dir = strrchr( e.filename, '/' );
if ( dir )
dir++;
else
dir = e.filename;
if ( *dir == '.' )
return false;
if ( !strcmp( dir, "Icon\x0D" ) )
return false;
}
return true;
}
blargg_err_t Zip_Extractor::update_info( bool advance_first )
{
while ( 1 )
{
entry_t& e = (entry_t&) catalog [catalog_pos];
if ( memcmp( e.type, "\0K\1\2P", 5 ) && memcmp( e.type, "PK\1\2", 4 ) )
{
check( !memcmp( e.type, "\0K\5\6P", 5 ) );
break;
}
unsigned len = get_le16( e.filename_len );
int next_offset = catalog_pos + entry_size + len + get_le16( e.extra_len ) +
get_le16( e.comment_len );
if ( (unsigned) next_offset > catalog.size() - end_entry_size )
return blargg_err_file_corrupt;
if ( catalog [next_offset] == 'P' )
reorder_entry_header( next_offset );
if ( !advance_first )
{
e.filename [len] = 0; // terminate name
if ( is_normal_file( e, len ) )
{
set_name( e.filename );
set_info( get_le32( e.size ), get_le32( e.date ), get_le32( e.crc ) );
break;
}
}
catalog_pos = next_offset;
advance_first = false;
}
return blargg_ok;
}
blargg_err_t Zip_Extractor::next_v()
{
return update_info( true );
}
blargg_err_t Zip_Extractor::rewind_v()
{
return seek_arc_v( 0 );
}
fex_pos_t Zip_Extractor::tell_arc_v() const
{
return catalog_pos;
}
blargg_err_t Zip_Extractor::seek_arc_v( fex_pos_t pos )
{
assert( 0 <= pos && (size_t) pos <= catalog.size() - end_entry_size );
catalog_pos = pos;
return update_info( false );
}
// Reading
void Zip_Extractor::clear_file_v()
{
buf.end();
}
blargg_err_t Zip_Extractor::inflater_read( void* data, void* out, int* count )
{
Zip_Extractor& self = *STATIC_CAST(Zip_Extractor*,data);
if ( *count > self.raw_remain )
*count = self.raw_remain;
self.raw_remain -= *count;
return self.arc().read( out, *count );
}
blargg_err_t Zip_Extractor::fill_buf( int offset, int buf_size, int initial_read )
{
raw_remain = arc().size() - offset;
RETURN_ERR( arc().seek( offset ) );
return buf.begin( inflater_read, this, buf_size, initial_read );
}
blargg_err_t Zip_Extractor::first_read( int count )
{
entry_t const& e = (entry_t&) catalog [catalog_pos];
// Determine compression
{
int method = get_le16( e.method );
if ( (method && method != Z_DEFLATED) || get_le16( e.vers ) > 20 )
return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "compression method" );
file_deflated = (method != 0);
}
int raw_size = get_le32( e.raw_size );
int file_offset = get_le32( e.file_offset );
int align = file_offset % disk_block_size;
{
// read header
int buf_size = 3 * disk_block_size - 1 + raw_size; // space for all raw data
buf_size -= buf_size % disk_block_size;
int initial_read = buf_size;
if ( !file_deflated || count < size() )
{
buf_size = read_buf_size;
initial_read = disk_block_size * 2;
}
// TODO: avoid re-reading if buffer already has data we want?
RETURN_ERR( fill_buf( file_offset - align, buf_size, initial_read ) );
}
header_t const& h = (header_t&) buf.data() [align];
if ( buf.filled() < align + header_size || memcmp( h.type, "PK\3\4", 4 ) )
return blargg_err_file_corrupt;
// CRCs of header and file data
correct_crc = get_le32( h.crc );
if ( !correct_crc )
correct_crc = get_le32( e.crc );
check( correct_crc == get_le32( e.crc ) ); // catalog CRC should match
crc = ::crc32( 0, NULL, 0 );
// Data offset
int data_offset = file_offset + header_size +
get_le16( h.filename_len ) + get_le16( h.extra_len );
if ( data_offset + raw_size > catalog_begin )
return blargg_err_file_corrupt;
// Refill buffer if there's lots of extra data after header
int buf_offset = data_offset - file_offset + align;
if ( buf_offset > buf.filled() )
{
// TODO: this will almost never occur, making it a good place for bugs
buf_offset = data_offset % disk_block_size;
RETURN_ERR( fill_buf( data_offset - buf_offset, read_buf_size, disk_block_size ) );
}
raw_remain = raw_size - (buf.filled() - buf_offset);
return buf.set_mode( (file_deflated ? buf.mode_raw_deflate : buf.mode_copy), buf_offset );
}
blargg_err_t Zip_Extractor::extract_v( void* out, int count )
{
if ( tell() == 0 )
RETURN_ERR( first_read( count ) );
int actual = count;
RETURN_ERR( buf.read( out, &actual ) );
if ( actual < count )
return blargg_err_file_corrupt;
crc = ::crc32( crc, (byte const*) out, count );
if ( count == reader().remain() && crc != correct_crc )
return blargg_err_file_corrupt;
return blargg_ok;
}

45
fex/fex/Zip_Extractor.h
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// ZIP archive extractor. Only supports deflation and store (no compression).
// File_Extractor 1.0.0
#ifndef ZIP_EXTRACTOR_H
#define ZIP_EXTRACTOR_H
#include "File_Extractor.h"
#include "Zlib_Inflater.h"
class Zip_Extractor : public File_Extractor {
public:
Zip_Extractor();
virtual ~Zip_Extractor();
protected:
virtual blargg_err_t open_path_v();
virtual blargg_err_t open_v();
virtual void close_v();
virtual void clear_file_v();
virtual blargg_err_t next_v();
virtual blargg_err_t rewind_v();
virtual fex_pos_t tell_arc_v() const;
virtual blargg_err_t seek_arc_v( fex_pos_t );
virtual blargg_err_t extract_v( void*, int );
private:
blargg_vector<char> catalog;
int catalog_begin; // offset of first catalog entry in file (to detect corruption)
int catalog_pos; // position of current entry in catalog
int raw_remain; // bytes remaining to be read from zip file for current file
unsigned crc; // ongoing CRC of extracted bytes
unsigned correct_crc;
bool file_deflated;
Zlib_Inflater buf;
blargg_err_t fill_buf( int offset, int buf_size, int initial_read );
blargg_err_t update_info( bool advance_first );
blargg_err_t first_read( int count );
void reorder_entry_header( int offset );
static blargg_err_t inflater_read( void* data, void* out, int* count );
};
#endif

257
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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "Zlib_Inflater.h"
/* Copyright (C) 2006-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
int const block_size = 4096;
static const char* get_zlib_err( int code )
{
assert( code != Z_OK );
switch ( code )
{
case Z_MEM_ERROR: return blargg_err_memory;
case Z_DATA_ERROR: return blargg_err_file_corrupt;
// TODO: handle more error codes
}
const char* str = zError( code );
if ( !str )
str = BLARGG_ERR( BLARGG_ERR_GENERIC, "problem unzipping data" );
return str;
}
void Zlib_Inflater::end()
{
if ( deflated_ )
{
deflated_ = false;
if ( inflateEnd( &zbuf ) )
check( false );
}
buf.clear();
static z_stream const empty = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
memcpy( &zbuf, &empty, sizeof zbuf );
}
Zlib_Inflater::Zlib_Inflater()
{
deflated_ = false;
end(); // initialize things
}
Zlib_Inflater::~Zlib_Inflater()
{
end();
}
blargg_err_t Zlib_Inflater::fill_buf( int count )
{
byte* out = buf.end() - count;
RETURN_ERR( callback( user_data, out, &count ) );
zbuf.avail_in = count;
zbuf.next_in = out;
return blargg_ok;
}
blargg_err_t Zlib_Inflater::begin( callback_t new_callback, void* new_user_data,
int new_buf_size, int initial_read )
{
callback = new_callback;
user_data = new_user_data;
end();
// TODO: decide whether using different size on alloc failure is a good idea
//RETURN_ERR( buf.resize( new_buf_size ? new_buf_size : 4 * block_size ) );
if ( new_buf_size && buf.resize( new_buf_size ) )
{
ACK_FAILURE();
new_buf_size = 0;
}
if ( !new_buf_size )
{
RETURN_ERR( buf.resize( 4 * block_size ) );
initial_read = 0;
}
// Fill buffer with some data, less than normal buffer size since caller might
// just be examining beginning of file.
return fill_buf( initial_read ? initial_read : block_size );
}
blargg_err_t Zlib_Inflater::set_mode( mode_t mode, int data_offset )
{
zbuf.next_in += data_offset;
zbuf.avail_in -= data_offset;
if ( mode == mode_auto )
{
// examine buffer for gzip header
mode = mode_copy;
unsigned const min_gzip_size = 2 + 8 + 8;
if ( zbuf.avail_in >= min_gzip_size &&
zbuf.next_in [0] == 0x1F && zbuf.next_in [1] == 0x8B )
mode = mode_ungz;
}
if ( mode != mode_copy )
{
int wb = MAX_WBITS + 16; // have zlib handle gzip header
if ( mode == mode_raw_deflate )
wb = -MAX_WBITS;
int zerr = inflateInit2( &zbuf, wb );
if ( zerr )
{
zbuf.next_in = NULL;
return get_zlib_err( zerr );
}
deflated_ = true;
}
return blargg_ok;
}
/*
// Reads/inflates entire stream. All input must be in buffer, and count must be total
// of all output.
blargg_err_t read_all( void* out, int count );
// zlib automatically applies this optimization (uses inflateFast)
// TODO: remove
blargg_err_t Zlib_Inflater::read_all( void* out, int count )
{
if ( deflated_ )
{
zbuf.next_out = (Bytef*) out;
zbuf.avail_out = count;
int err = inflate( &zbuf, Z_FINISH );
if ( zbuf.avail_out || err != Z_STREAM_END )
return blargg_err_file_corrupt;
}
else
{
if ( zbuf.avail_in < count )
return blargg_err_file_corrupt;
memcpy( out, zbuf.next_in, count );
zbuf.next_in += count;
zbuf.avail_in -= count;
}
return blargg_ok;
}
*/
blargg_err_t Zlib_Inflater::read( void* out, int* count_io )
{
int remain = *count_io;
if ( remain && zbuf.next_in )
{
if ( deflated_ )
{
zbuf.next_out = (Bytef*) out;
zbuf.avail_out = remain;
while ( 1 )
{
uInt old_avail_in = zbuf.avail_in;
int err = inflate( &zbuf, Z_NO_FLUSH );
if ( err == Z_STREAM_END )
{
remain = zbuf.avail_out;
end();
break; // no more data to inflate
}
if ( err && (err != Z_BUF_ERROR || old_avail_in) )
return get_zlib_err( err );
if ( !zbuf.avail_out )
{
remain = 0;
break; // requested number of bytes inflated
}
if ( zbuf.avail_in )
{
// inflate() should never leave input if there's still space for output
check( false );
return blargg_err_file_corrupt;
}
RETURN_ERR( fill_buf( buf.size() ) );
if ( !zbuf.avail_in )
return blargg_err_file_corrupt; // stream didn't end but there's no more data
}
}
else
{
while ( 1 )
{
// copy buffered data
if ( zbuf.avail_in )
{
long count = zbuf.avail_in;
if ( count > remain )
count = remain;
memcpy( out, zbuf.next_in, count );
zbuf.total_out += count;
out = (char*) out + count;
remain -= count;
zbuf.next_in += count;
zbuf.avail_in -= count;
}
if ( !zbuf.avail_in && zbuf.next_in < buf.end() )
{
end();
break;
}
// read large request directly
if ( remain + zbuf.total_out % block_size >= buf.size() )
{
int count = remain;
RETURN_ERR( callback( user_data, out, &count ) );
zbuf.total_out += count;
out = (char*) out + count;
remain -= count;
if ( remain )
{
end();
break;
}
}
if ( !remain )
break;
RETURN_ERR( fill_buf( buf.size() - zbuf.total_out % block_size ) );
}
}
}
*count_io -= remain;
return blargg_ok;
}

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// Simplifies use of zlib for inflating data
// File_Extractor 1.0.0
#ifndef ZLIB_INFLATER_H
#define ZLIB_INFLATER_H
#include "blargg_common.h"
#include "Data_Reader.h"
#include "zlib.h"
class Zlib_Inflater {
public:
// Reads at most min(*count,bytes_until_eof()) bytes into *out and set *count
// to that number, or returns error if that many can't be read.
typedef blargg_err_t (*callback_t)( void* user_data, void* out, int* count );
// Begins by setting callback and filling buffer. Default buffer is 16K and
// filled to 4K, or specify buf_size and initial_read for custom buffer size
// and how much to read initially.
blargg_err_t begin( callback_t, void* user_data,
int buf_size = 0, int initial_read = 0 );
// Data read into buffer by begin()
const unsigned char* data() const { return zbuf.next_in; }
int filled() const { return zbuf.avail_in; }
// Begins inflation using specified mode. Using mode_auto selects between
// mode_copy and mode_ungz by examining first two bytes of buffer. Use
// buf_offset to specify where data begins in buffer, in case there is
// header data that should be skipped.
enum mode_t { mode_copy, mode_ungz, mode_raw_deflate, mode_auto };
blargg_err_t set_mode( mode_t, int buf_offset = 0 );
// True if set_mode() has been called with mode_ungz or mode_raw_deflate
bool deflated() const { return deflated_; }
// Reads/inflates at most *count_io bytes into *out and sets *count_io to actual
// number of bytes read (less than requested if end of data was reached).
// Buffers source data internally, even in copy mode, so input file can be
// unbuffered without sacrificing performance.
blargg_err_t read( void* out, int* count_io );
// Total number of bytes read since begin()
int tell() const { return zbuf.total_out; }
// Ends inflation and frees memory
void end();
private:
// noncopyable
Zlib_Inflater( const Zlib_Inflater& );
Zlib_Inflater& operator = ( const Zlib_Inflater& );
// Implementation
public:
Zlib_Inflater();
~Zlib_Inflater();
private:
z_stream_s zbuf;
blargg_vector<unsigned char> buf;
bool deflated_;
callback_t callback;
void* user_data;
blargg_err_t fill_buf( int count );
};
#endif

51
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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "blargg_common.h"
/* Copyright (C) 2008-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
void blargg_vector_::init()
{
begin_ = NULL;
size_ = 0;
}
void blargg_vector_::clear()
{
void* p = begin_;
begin_ = NULL;
size_ = 0;
free( p );
}
blargg_err_t blargg_vector_::resize_( size_t n, size_t elem_size )
{
if ( n != size_ )
{
if ( n == 0 )
{
// Simpler to handle explicitly. Realloc will handle a size of 0,
// but then we have to avoid raising an error for a NULL return.
clear();
}
else
{
void* p = realloc( begin_, n * elem_size );
CHECK_ALLOC( p );
begin_ = p;
size_ = n;
}
}
return blargg_ok;
}

201
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// Sets up common environment for Shay Green's libraries.
// To change configuration options, modify blargg_config.h, not this file.
// File_Extractor 1.0.0
#ifndef BLARGG_COMMON_H
#define BLARGG_COMMON_H
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
typedef const char* blargg_err_t; // 0 on success, otherwise error string
// Success; no error
int const blargg_ok = 0;
// BLARGG_RESTRICT: equivalent to C99's restrict, where supported
#if __GNUC__ >= 3 || _MSC_VER >= 1100
#define BLARGG_RESTRICT __restrict
#else
#define BLARGG_RESTRICT
#endif
#if __cplusplus >= 199711
#define BLARGG_MUTABLE mutable
#else
#define BLARGG_MUTABLE
#endif
/* BLARGG_4CHAR('a','b','c','d') = 'abcd' (four character integer constant).
I don't just use 'abcd' because that's implementation-dependent. */
#define BLARGG_4CHAR( a, b, c, d ) \
((a&0xFF)*0x1000000 + (b&0xFF)*0x10000 + (c&0xFF)*0x100 + (d&0xFF))
/* BLARGG_STATIC_ASSERT( expr ): Generates compile error if expr is 0.
Can be used at file, function, or class scope. */
#ifdef _MSC_VER
// MSVC6 (_MSC_VER < 1300) __LINE__ fails when /Zl is specified
#define BLARGG_STATIC_ASSERT( expr ) \
void blargg_failed_( int (*arg) [2 / (int) !!(expr) - 1] )
#else
// Others fail when declaring same function multiple times in class,
// so differentiate them by line
#define BLARGG_STATIC_ASSERT( expr ) \
void blargg_failed_( int (*arg) [2 / !!(expr) - 1] [__LINE__] )
#endif
/* Pure virtual functions cause a vtable entry to a "called pure virtual"
error handler, requiring linkage to the C++ runtime library. This macro is
used in place of the "= 0", and simply expands to its argument. During
development, it expands to "= 0", allowing detection of missing overrides. */
#define BLARGG_PURE( def ) def
/* My code depends on ASCII anywhere a character or string constant is
compared with data read from a file, and anywhere file data is read and
treated as a string. */
#if '\n'!=0x0A || ' '!=0x20 || '0'!=0x30 || 'A'!=0x41 || 'a'!=0x61
#error "ASCII character set required"
#endif
/* My code depends on int being at least 32 bits. Almost everything these days
uses at least 32-bit ints, so it's hard to even find a system with 16-bit ints
to test with. The issue can't be gotten around by using a suitable blargg_int
everywhere either, because int is often converted to implicitly when doing
arithmetic on smaller types. */
#if UINT_MAX < 0xFFFFFFFF
#error "int must be at least 32 bits"
#endif
// In case compiler doesn't support these properly. Used rarely.
#define STATIC_CAST(T,expr) static_cast<T> (expr)
#define CONST_CAST( T,expr) const_cast<T> (expr)
// User configuration can override the above macros if necessary
#include "blargg_config.h"
/* BLARGG_DEPRECATED [_TEXT] for any declarations/text to be removed in a
future version. In GCC, we can let the compiler warn. In other compilers,
we strip it out unless BLARGG_LEGACY is true. */
#if BLARGG_LEGACY
// Allow old client code to work without warnings
#define BLARGG_DEPRECATED_TEXT( text ) text
#define BLARGG_DEPRECATED( text ) text
#elif __GNUC__ >= 4
// In GCC, we can mark declarations and let the compiler warn
#define BLARGG_DEPRECATED_TEXT( text ) text
#define BLARGG_DEPRECATED( text ) __attribute__ ((deprecated)) text
#else
// By default, deprecated items are removed, to avoid use in new code
#define BLARGG_DEPRECATED_TEXT( text )
#define BLARGG_DEPRECATED( text )
#endif
/* BOOST::int8_t, BOOST::int32_t, etc.
I used BOOST since I originally was going to allow use of the boost library
for prividing the definitions. If I'm defining them, they must be scoped or
else they could conflict with the standard ones at global scope. Even if
HAVE_STDINT_H isn't defined, I can't assume the typedefs won't exist at
global scope already. */
#if defined (HAVE_STDINT_H) || \
UCHAR_MAX != 0xFF || USHRT_MAX != 0xFFFF || UINT_MAX != 0xFFFFFFFF
#include <stdint.h>
#define BOOST
#else
struct BOOST
{
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef int int32_t;
typedef unsigned int uint32_t;
};
#endif
/* My code is not written with exceptions in mind, so either uses new (nothrow)
OR overrides operator new in my classes. The former is best since clients
creating objects will get standard exceptions on failure, but that causes it
to require the standard C++ library. So, when the client is using the C
interface, I override operator new to use malloc. */
// BLARGG_DISABLE_NOTHROW is put inside classes
#ifndef BLARGG_DISABLE_NOTHROW
// throw spec mandatory in ISO C++ if NULL can be returned
#if __cplusplus >= 199711 || __GNUC__ >= 3 || _MSC_VER >= 1300
#define BLARGG_THROWS_NOTHING throw ()
#else
#define BLARGG_THROWS_NOTHING
#endif
#define BLARGG_DISABLE_NOTHROW \
void* operator new ( size_t s ) BLARGG_THROWS_NOTHING { return malloc( s ); }\
void operator delete( void* p ) BLARGG_THROWS_NOTHING { free( p ); }
#define BLARGG_NEW new
#else
// BLARGG_NEW is used in place of new in library code
#include <new>
#define BLARGG_NEW new (std::nothrow)
#endif
class blargg_vector_ {
protected:
void* begin_;
size_t size_;
void init();
blargg_err_t resize_( size_t n, size_t elem_size );
public:
size_t size() const { return size_; }
void clear();
};
// Very lightweight vector for POD types (no constructor/destructor)
template<class T>
class blargg_vector : public blargg_vector_ {
union T_must_be_pod { T t; }; // fails if T is not POD
public:
blargg_vector() { init(); }
~blargg_vector() { clear(); }
blargg_err_t resize( size_t n ) { return resize_( n, sizeof (T) ); }
T* begin() { return static_cast<T*> (begin_); }
const T* begin() const { return static_cast<T*> (begin_); }
T* end() { return static_cast<T*> (begin_) + size_; }
const T* end() const { return static_cast<T*> (begin_) + size_; }
T& operator [] ( size_t n )
{
assert( n < size_ );
return static_cast<T*> (begin_) [n];
}
const T& operator [] ( size_t n ) const
{
assert( n < size_ );
return static_cast<T*> (begin_) [n];
}
};
// Callback function with user data.
// blargg_callback<T> set_callback; // for user, this acts like...
// void set_callback( T func, void* user_data = NULL ); // ...this
// To call function, do set_callback.f( .. set_callback.data ... );
template<class T>
struct blargg_callback
{
T f;
void* data;
blargg_callback() { f = NULL; }
void operator () ( T callback, void* user_data = NULL ) { f = callback; data = user_data; }
};
BLARGG_DEPRECATED( typedef signed int blargg_long; )
BLARGG_DEPRECATED( typedef unsigned int blargg_ulong; )
#if BLARGG_LEGACY
#define BOOST_STATIC_ASSERT BLARGG_STATIC_ASSERT
#endif
#endif

31
fex/fex/blargg_config.h
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// Library configuration. Modify this file as necessary.
// File_Extractor 1.0.0
#ifndef BLARGG_CONFIG_H
#define BLARGG_CONFIG_H
// Uncomment a #define line below to have effect described.
// Enable RAR archive support. Doing so adds extra licensing restrictions
// to this library (see unrar/readme.txt for more information).
//#define FEX_ENABLE_RAR 1
// Accept file paths encoded as UTF-8. Currently only affects Windows,
// as Unix/Linux/Mac OS X already use UTF-8 paths.
//#define BLARGG_UTF8_PATHS 1
// Enable support for as building DLL on Windows.
//#define BLARGG_BUILD_DLL 1
// Support only the listed archive types. Remove any you don't need.
#define FEX_TYPE_LIST \
fex_7z_type,\
fex_gz_type,\
fex_zip_type,
// Use standard config.h if present
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#endif

185
fex/fex/blargg_endian.h
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// CPU Byte Order Utilities
// File_Extractor 1.0.0
#ifndef BLARGG_ENDIAN_H
#define BLARGG_ENDIAN_H
#include "blargg_common.h"
// BLARGG_CPU_CISC: Defined if CPU has very few general-purpose registers (< 16)
#if defined (__i386__) || defined (__x86_64__) || defined (_M_IX86) || defined (_M_X64)
#define BLARGG_CPU_X86 1
#define BLARGG_CPU_CISC 1
#endif
#if defined (__powerpc__) || defined (__ppc__) || defined (__ppc64__) || \
defined (__POWERPC__) || defined (__powerc)
#define BLARGG_CPU_POWERPC 1
#define BLARGG_CPU_RISC 1
#endif
// BLARGG_BIG_ENDIAN, BLARGG_LITTLE_ENDIAN: Determined automatically, otherwise only
// one may be #defined to 1. Only needed if something actually depends on byte order.
#if !defined (BLARGG_BIG_ENDIAN) && !defined (BLARGG_LITTLE_ENDIAN)
#ifdef __GLIBC__
// GCC handles this for us
#include <endian.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define BLARGG_LITTLE_ENDIAN 1
#elif __BYTE_ORDER == __BIG_ENDIAN
#define BLARGG_BIG_ENDIAN 1
#endif
#else
#if defined (LSB_FIRST) || defined (__LITTLE_ENDIAN__) || BLARGG_CPU_X86 || \
(defined (LITTLE_ENDIAN) && LITTLE_ENDIAN+0 != 1234)
#define BLARGG_LITTLE_ENDIAN 1
#endif
#if defined (MSB_FIRST) || defined (__BIG_ENDIAN__) || defined (WORDS_BIGENDIAN) || \
defined (__sparc__) || BLARGG_CPU_POWERPC || \
(defined (BIG_ENDIAN) && BIG_ENDIAN+0 != 4321)
#define BLARGG_BIG_ENDIAN 1
#elif !defined (__mips__)
// No endian specified; assume little-endian, since it's most common
#define BLARGG_LITTLE_ENDIAN 1
#endif
#endif
#endif
#if BLARGG_LITTLE_ENDIAN && BLARGG_BIG_ENDIAN
#undef BLARGG_LITTLE_ENDIAN
#undef BLARGG_BIG_ENDIAN
#endif
inline void blargg_verify_byte_order()
{
#ifndef NDEBUG
#if BLARGG_BIG_ENDIAN
volatile int i = 1;
assert( *(volatile char*) &i == 0 );
#elif BLARGG_LITTLE_ENDIAN
volatile int i = 1;
assert( *(volatile char*) &i != 0 );
#endif
#endif
}
inline unsigned get_le16( void const* p )
{
return (unsigned) ((unsigned char const*) p) [1] << 8 |
(unsigned) ((unsigned char const*) p) [0];
}
inline unsigned get_be16( void const* p )
{
return (unsigned) ((unsigned char const*) p) [0] << 8 |
(unsigned) ((unsigned char const*) p) [1];
}
inline unsigned get_le32( void const* p )
{
return (unsigned) ((unsigned char const*) p) [3] << 24 |
(unsigned) ((unsigned char const*) p) [2] << 16 |
(unsigned) ((unsigned char const*) p) [1] << 8 |
(unsigned) ((unsigned char const*) p) [0];
}
inline unsigned get_be32( void const* p )
{
return (unsigned) ((unsigned char const*) p) [0] << 24 |
(unsigned) ((unsigned char const*) p) [1] << 16 |
(unsigned) ((unsigned char const*) p) [2] << 8 |
(unsigned) ((unsigned char const*) p) [3];
}
inline void set_le16( void* p, unsigned n )
{
((unsigned char*) p) [1] = (unsigned char) (n >> 8);
((unsigned char*) p) [0] = (unsigned char) n;
}
inline void set_be16( void* p, unsigned n )
{
((unsigned char*) p) [0] = (unsigned char) (n >> 8);
((unsigned char*) p) [1] = (unsigned char) n;
}
inline void set_le32( void* p, unsigned n )
{
((unsigned char*) p) [0] = (unsigned char) n;
((unsigned char*) p) [1] = (unsigned char) (n >> 8);
((unsigned char*) p) [2] = (unsigned char) (n >> 16);
((unsigned char*) p) [3] = (unsigned char) (n >> 24);
}
inline void set_be32( void* p, unsigned n )
{
((unsigned char*) p) [3] = (unsigned char) n;
((unsigned char*) p) [2] = (unsigned char) (n >> 8);
((unsigned char*) p) [1] = (unsigned char) (n >> 16);
((unsigned char*) p) [0] = (unsigned char) (n >> 24);
}
#if BLARGG_NONPORTABLE
// Optimized implementation if byte order is known
#if BLARGG_LITTLE_ENDIAN
#define GET_LE16( addr ) (*(BOOST::uint16_t const*) (addr))
#define GET_LE32( addr ) (*(BOOST::uint32_t const*) (addr))
#define SET_LE16( addr, data ) (void) (*(BOOST::uint16_t*) (addr) = (data))
#define SET_LE32( addr, data ) (void) (*(BOOST::uint32_t*) (addr) = (data))
#elif BLARGG_BIG_ENDIAN
#define GET_BE16( addr ) (*(BOOST::uint16_t const*) (addr))
#define GET_BE32( addr ) (*(BOOST::uint32_t const*) (addr))
#define SET_BE16( addr, data ) (void) (*(BOOST::uint16_t*) (addr) = (data))
#define SET_BE32( addr, data ) (void) (*(BOOST::uint32_t*) (addr) = (data))
#if BLARGG_CPU_POWERPC
// PowerPC has special byte-reversed instructions
#if defined (__MWERKS__)
#define GET_LE16( addr ) (__lhbrx( addr, 0 ))
#define GET_LE32( addr ) (__lwbrx( addr, 0 ))
#define SET_LE16( addr, in ) (__sthbrx( in, addr, 0 ))
#define SET_LE32( addr, in ) (__stwbrx( in, addr, 0 ))
#elif defined (__GNUC__)
#define GET_LE16( addr ) ({unsigned short ppc_lhbrx_; __asm__ volatile( "lhbrx %0,0,%1" : "=r" (ppc_lhbrx_) : "r" (addr) : "memory" ); ppc_lhbrx_;})
#define GET_LE32( addr ) ({unsigned short ppc_lwbrx_; __asm__ volatile( "lwbrx %0,0,%1" : "=r" (ppc_lwbrx_) : "r" (addr) : "memory" ); ppc_lwbrx_;})
#define SET_LE16( addr, in ) ({__asm__ volatile( "sthbrx %0,0,%1" : : "r" (in), "r" (addr) : "memory" );})
#define SET_LE32( addr, in ) ({__asm__ volatile( "stwbrx %0,0,%1" : : "r" (in), "r" (addr) : "memory" );})
#endif
#endif
#endif
#endif
#ifndef GET_LE16
#define GET_LE16( addr ) get_le16( addr )
#define SET_LE16( addr, data ) set_le16( addr, data )
#endif
#ifndef GET_LE32
#define GET_LE32( addr ) get_le32( addr )
#define SET_LE32( addr, data ) set_le32( addr, data )
#endif
#ifndef GET_BE16
#define GET_BE16( addr ) get_be16( addr )
#define SET_BE16( addr, data ) set_be16( addr, data )
#endif
#ifndef GET_BE32
#define GET_BE32( addr ) get_be32( addr )
#define SET_BE32( addr, data ) set_be32( addr, data )
#endif
// auto-selecting versions
inline void set_le( BOOST::uint16_t* p, unsigned n ) { SET_LE16( p, n ); }
inline void set_le( BOOST::uint32_t* p, unsigned n ) { SET_LE32( p, n ); }
inline void set_be( BOOST::uint16_t* p, unsigned n ) { SET_BE16( p, n ); }
inline void set_be( BOOST::uint32_t* p, unsigned n ) { SET_BE32( p, n ); }
inline unsigned get_le( BOOST::uint16_t const* p ) { return GET_LE16( p ); }
inline unsigned get_le( BOOST::uint32_t const* p ) { return GET_LE32( p ); }
inline unsigned get_be( BOOST::uint16_t const* p ) { return GET_BE16( p ); }
inline unsigned get_be( BOOST::uint32_t const* p ) { return GET_BE32( p ); }
#endif

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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "blargg_errors.h"
/* Copyright (C) 2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
blargg_err_def_t blargg_err_generic = BLARGG_ERR_GENERIC;
blargg_err_def_t blargg_err_memory = BLARGG_ERR_MEMORY;
blargg_err_def_t blargg_err_caller = BLARGG_ERR_CALLER;
blargg_err_def_t blargg_err_internal = BLARGG_ERR_INTERNAL;
blargg_err_def_t blargg_err_limitation = BLARGG_ERR_LIMITATION;
blargg_err_def_t blargg_err_file_missing = BLARGG_ERR_FILE_MISSING;
blargg_err_def_t blargg_err_file_read = BLARGG_ERR_FILE_READ;
blargg_err_def_t blargg_err_file_write = BLARGG_ERR_FILE_WRITE;
blargg_err_def_t blargg_err_file_io = BLARGG_ERR_FILE_IO;
blargg_err_def_t blargg_err_file_full = BLARGG_ERR_FILE_FULL;
blargg_err_def_t blargg_err_file_eof = BLARGG_ERR_FILE_EOF;
blargg_err_def_t blargg_err_file_type = BLARGG_ERR_FILE_TYPE;
blargg_err_def_t blargg_err_file_feature = BLARGG_ERR_FILE_FEATURE;
blargg_err_def_t blargg_err_file_corrupt = BLARGG_ERR_FILE_CORRUPT;
const char* blargg_err_str( blargg_err_t err )
{
if ( !err )
return "";
if ( *err == BLARGG_ERR_TYPE("")[0] )
return err + 1;
return err;
}
bool blargg_is_err_type( blargg_err_t err, const char type [] )
{
if ( err )
{
// True if first strlen(type) characters of err match type
char const* p = err;
while ( *type && *type == *p )
{
type++;
p++;
}
if ( !*type )
return true;
}
return false;
}
const char* blargg_err_details( blargg_err_t err )
{
const char* p = err;
if ( !p )
{
p = "";
}
else if ( *p == BLARGG_ERR_TYPE("")[0] )
{
while ( *p && *p != ';' )
p++;
// Skip ; and space after it
if ( *p )
{
p++;
check( *p == ' ' );
if ( *p )
p++;
}
}
return p;
}
int blargg_err_to_code( blargg_err_t err, blargg_err_to_code_t const codes [] )
{
if ( !err )
return 0;
while ( codes->str && !blargg_is_err_type( err, codes->str ) )
codes++;
return codes->code;
}
blargg_err_t blargg_code_to_err( int code, blargg_err_to_code_t const codes [] )
{
if ( !code )
return blargg_ok;
while ( codes->str && codes->code != code )
codes++;
if ( !codes->str )
return blargg_err_generic;
return codes->str;
}

80
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// Error strings and conversion functions
// File_Extractor 1.0.0
#ifndef BLARGG_ERRORS_H
#define BLARGG_ERRORS_H
#ifndef BLARGG_COMMON_H
#include "blargg_common.h"
#endif
typedef const char blargg_err_def_t [];
// Basic errors
extern blargg_err_def_t blargg_err_generic;
extern blargg_err_def_t blargg_err_memory;
extern blargg_err_def_t blargg_err_caller;
extern blargg_err_def_t blargg_err_internal;
extern blargg_err_def_t blargg_err_limitation;
// File low-level
extern blargg_err_def_t blargg_err_file_missing; // not found
extern blargg_err_def_t blargg_err_file_read;
extern blargg_err_def_t blargg_err_file_write;
extern blargg_err_def_t blargg_err_file_io;
extern blargg_err_def_t blargg_err_file_full;
extern blargg_err_def_t blargg_err_file_eof;
// File high-level
extern blargg_err_def_t blargg_err_file_type; // wrong file type
extern blargg_err_def_t blargg_err_file_feature;
extern blargg_err_def_t blargg_err_file_corrupt;
// C string describing error, or "" if err == NULL
const char* blargg_err_str( blargg_err_t err );
// True iff error is of given type, or false if err == NULL
bool blargg_is_err_type( blargg_err_t, const char type [] );
// Details of error without describing main cause, or "" if err == NULL
const char* blargg_err_details( blargg_err_t err );
// Converts error string to integer code using mapping table. Calls blargg_is_err_type()
// for each str and returns code on first match. Returns 0 if err == NULL.
struct blargg_err_to_code_t {
const char* str;
int code;
};
int blargg_err_to_code( blargg_err_t err, blargg_err_to_code_t const [] );
// Converts error code back to string. If code == 0, returns NULL. If not in table,
// returns blargg_err_generic.
blargg_err_t blargg_code_to_err( int code, blargg_err_to_code_t const [] );
// Generates error string literal with details of cause
#define BLARGG_ERR( type, str ) (type "; " str)
// Extra space to make it clear when blargg_err_str() isn't called to get
// printable version of error. At some point, I might prefix error strings
// with a code, to speed conversion to a code.
#define BLARGG_ERR_TYPE( str ) " " str
// Error types to pass to BLARGG_ERR macro
#define BLARGG_ERR_GENERIC BLARGG_ERR_TYPE( "operation failed" )
#define BLARGG_ERR_MEMORY BLARGG_ERR_TYPE( "out of memory" )
#define BLARGG_ERR_CALLER BLARGG_ERR_TYPE( "internal usage bug" )
#define BLARGG_ERR_INTERNAL BLARGG_ERR_TYPE( "internal bug" )
#define BLARGG_ERR_LIMITATION BLARGG_ERR_TYPE( "exceeded limitation" )
#define BLARGG_ERR_FILE_MISSING BLARGG_ERR_TYPE( "file not found" )
#define BLARGG_ERR_FILE_READ BLARGG_ERR_TYPE( "couldn't open file" )
#define BLARGG_ERR_FILE_WRITE BLARGG_ERR_TYPE( "couldn't modify file" )
#define BLARGG_ERR_FILE_IO BLARGG_ERR_TYPE( "read/write error" )
#define BLARGG_ERR_FILE_FULL BLARGG_ERR_TYPE( "disk full" )
#define BLARGG_ERR_FILE_EOF BLARGG_ERR_TYPE( "truncated file" )
#define BLARGG_ERR_FILE_TYPE BLARGG_ERR_TYPE( "wrong file type" )
#define BLARGG_ERR_FILE_FEATURE BLARGG_ERR_TYPE( "unsupported file feature" )
#define BLARGG_ERR_FILE_CORRUPT BLARGG_ERR_TYPE( "corrupt file" )
#endif

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/* Included at the beginning of library source files, AFTER all other #include
lines. Sets up helpful macros and services used in my source code. Since this
is only "active" in my source code, I don't have to worry about polluting the
global namespace with unprefixed names. */
// File_Extractor 1.0.0
#ifndef BLARGG_SOURCE_H
#define BLARGG_SOURCE_H
#ifndef BLARGG_COMMON_H // optimization only
#include "blargg_common.h"
#endif
#include "blargg_errors.h"
#include <string.h> /* memcpy(), memset(), memmove() */
#include <stddef.h> /* offsetof() */
/* The following four macros are for debugging only. Some or all might be
defined to do nothing, depending on the circumstances. Described is what
happens when a particular macro is defined to do something. When defined to
do nothing, the macros do NOT evaluate their argument(s). */
/* If expr is false, prints file and line number, then aborts program. Meant
for checking internal state and consistency. A failed assertion indicates a bug
in MY code.
void assert( bool expr ); */
#include <assert.h>
/* If expr is false, prints file and line number, then aborts program. Meant
for checking caller-supplied parameters and operations that are outside the
control of the module. A failed requirement probably indicates a bug in YOUR
code.
void require( bool expr ); */
#undef require
#define require( expr ) assert( expr )
/* Like printf() except output goes to debugging console/file.
void dprintf( const char format [], ... ); */
static inline void blargg_dprintf_( const char [], ... ) { }
#undef dprintf
#define dprintf (1) ? (void) 0 : blargg_dprintf_
/* If expr is false, prints file and line number to debug console/log, then
continues execution normally. Meant for flagging potential problems or things
that should be looked into, but that aren't serious problems.
void check( bool expr ); */
#undef check
#define check( expr ) ((void) 0)
/* If expr yields non-NULL error string, returns it from current function,
otherwise continues normally. */
#undef RETURN_ERR
#define RETURN_ERR( expr ) \
do {\
blargg_err_t blargg_return_err_ = (expr);\
if ( blargg_return_err_ )\
return blargg_return_err_;\
} while ( 0 )
/* If ptr is NULL, returns out-of-memory error, otherwise continues normally. */
#undef CHECK_ALLOC
#define CHECK_ALLOC( ptr ) \
do {\
if ( !(ptr) )\
return blargg_err_memory;\
} while ( 0 )
/* The usual min/max functions for built-in types.
template<typename T> T min( T x, T y ) { return x < y ? x : y; }
template<typename T> T max( T x, T y ) { return x > y ? x : y; } */
#define BLARGG_DEF_MIN_MAX( type ) \
static inline type blargg_min( type x, type y ) { if ( y < x ) x = y; return x; }\
static inline type blargg_max( type x, type y ) { if ( x < y ) x = y; return x; }
BLARGG_DEF_MIN_MAX( int )
BLARGG_DEF_MIN_MAX( unsigned )
BLARGG_DEF_MIN_MAX( long )
BLARGG_DEF_MIN_MAX( unsigned long )
BLARGG_DEF_MIN_MAX( float )
BLARGG_DEF_MIN_MAX( double )
#undef min
#define min blargg_min
#undef max
#define max blargg_max
// typedef unsigned char byte;
typedef unsigned char blargg_byte;
#undef byte
#define byte blargg_byte
#ifndef BLARGG_EXPORT
#if defined (_WIN32) && BLARGG_BUILD_DLL
#define BLARGG_EXPORT __declspec(dllexport)
#elif defined (__GNUC__)
// can always set visibility, even when not building DLL
#define BLARGG_EXPORT __attribute__ ((visibility ("default")))
#else
#define BLARGG_EXPORT
#endif
#endif
#if BLARGG_LEGACY
#define BLARGG_CHECK_ALLOC CHECK_ALLOC
#define BLARGG_RETURN_ERR RETURN_ERR
#endif
// Called after failed operation when overall operation may still complete OK.
// Only used by unit testing framework.
#undef ACK_FAILURE
#define ACK_FAILURE() ((void)0)
/* BLARGG_SOURCE_BEGIN: If defined, #included, allowing redefition of dprintf etc.
and check */
#ifdef BLARGG_SOURCE_BEGIN
#include BLARGG_SOURCE_BEGIN
#endif
#endif

321
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// File_Extractor 1.0.0. http://www.slack.net/~ant/
#include "fex.h"
#include "File_Extractor.h"
#include "blargg_endian.h"
#include <string.h>
#include <ctype.h>
/* Copyright (C) 2005-2009 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
//// Types
BLARGG_EXPORT const fex_type_t* fex_type_list( void )
{
static fex_type_t const fex_type_list_ [] =
{
#ifdef FEX_TYPE_LIST
FEX_TYPE_LIST
#else
// Modify blargg_config.h to change type list, NOT this file
fex_7z_type,
fex_gz_type,
#if FEX_ENABLE_RAR
fex_rar_type,
#endif
fex_zip_type,
#endif
fex_bin_type,
NULL
};
return fex_type_list_;
}
BLARGG_EXPORT fex_err_t fex_init( void )
{
static bool inited;
if ( !inited )
{
for ( fex_type_t const* t = fex_type_list(); *t != NULL; ++t )
{
if ( (*t)->init )
RETURN_ERR( (*t)->init() );
}
inited = true;
}
return blargg_ok;
}
BLARGG_EXPORT const char* fex_identify_header( void const* header )
{
unsigned four = get_be32( header );
switch ( four )
{
case 0x52457E5E:
case 0x52617221: return ".rar";
case 0x377ABCAF: return ".7z";
case 0x504B0304:
case 0x504B0506: return ".zip";
case 0x53495421: return ".sit";
case 0x41724301: return ".arc";
case 0x4D534346: return ".cab";
case 0x5A4F4F20: return ".zoo";
}
unsigned three = four >> 8;
switch ( three )
{
case 0x425A68: return ".bz2";
}
unsigned two = four >> 16;
switch ( two )
{
case 0x1F8B: return ".gz";
case 0x60EA: return ".arj";
}
unsigned skip_first_two = four & 0xFFFF;
if ( skip_first_two == 0x2D6C )
return ".lha";
return "";
}
static int fex_has_extension_( const char str [], const char suffix [], size_t str_len )
{
size_t suffix_len = strlen( suffix );
if ( str_len >= suffix_len )
{
str += str_len - suffix_len;
while ( *str && tolower( (unsigned char) *str ) == *suffix )
{
str++;
suffix++;
}
}
return *suffix == 0;
}
BLARGG_EXPORT int fex_has_extension( const char str [], const char suffix [] )
{
return fex_has_extension_( str, suffix, strlen( str ) );
}
static int is_archive_extension( const char str [] )
{
static const char exts [] [6] = {
".7z",
".arc",
".arj",
".bz2",
".cab",
".dmg",
".gz",
".lha",
".lz",
".lzh",
".lzma",
".lzo",
".lzx",
".pea",
".rar",
".sit",
".sitx",
".tgz",
".tlz",
".z",
".zip",
".zoo",
""
};
size_t str_len = strlen( str );
const char (*ext) [6] = exts;
for ( ; **ext; ext++ )
{
if ( fex_has_extension_( str, *ext, str_len ) )
return 1;
}
return 0;
}
BLARGG_EXPORT fex_type_t fex_identify_extension( const char str [] )
{
size_t str_len = strlen( str );
for ( fex_type_t const* types = fex_type_list(); *types; types++ )
{
if ( fex_has_extension_( str, (*types)->extension, str_len ) )
{
// Avoid treating known archive type as binary
if ( *(*types)->extension || !is_archive_extension( str ) )
return *types;
}
}
return NULL;
}
BLARGG_EXPORT fex_err_t fex_identify_file( fex_type_t* type_out, const char path [] )
{
*type_out = NULL;
fex_type_t type = fex_identify_extension( path );
// Unsupported extension?
if ( !type )
return blargg_ok; // reject
// Unknown/no extension?
if ( !*(type->extension) )
{
// Examine header
FEX_FILE_READER in;
RETURN_ERR( in.open( path ) );
if ( in.remain() >= fex_identify_header_size )
{
char h [fex_identify_header_size];
RETURN_ERR( in.read( h, sizeof h ) );
type = fex_identify_extension( fex_identify_header( h ) );
}
}
*type_out = type;
return blargg_ok;
}
BLARGG_EXPORT fex_err_t fex_open_type( fex_t** fe_out, const char path [], fex_type_t type )
{
*fe_out = NULL;
if ( !type )
return blargg_err_file_type;
fex_t* fe = type->new_fex();
CHECK_ALLOC( fe );
fex_err_t err = fe->open( path );
if ( err )
{
delete fe;
return err;
}
*fe_out = fe;
return blargg_ok;
}
BLARGG_EXPORT fex_err_t fex_open( fex_t** fe_out, const char path [] )
{
*fe_out = NULL;
fex_type_t type;
RETURN_ERR( fex_identify_file( &type, path ) );
return fex_open_type( fe_out, path, type );
}
//// Wide paths
char* fex_wide_to_path( const wchar_t* wide )
{
return blargg_to_utf8( wide );
}
void fex_free_path( char* path )
{
free( path );
}
//// Errors
#define ENTRY( name ) { blargg_err_##name, fex_err_##name }
static blargg_err_to_code_t const fex_codes [] =
{
ENTRY( generic ),
ENTRY( memory ),
ENTRY( caller ),
ENTRY( internal ),
ENTRY( limitation ),
ENTRY( file_missing ),
ENTRY( file_read ),
ENTRY( file_io ),
ENTRY( file_eof ),
ENTRY( file_type ),
ENTRY( file_feature ),
ENTRY( file_corrupt ),
{ 0, -1 }
};
#undef ENTRY
static int err_code( fex_err_t err )
{
return blargg_err_to_code( err, fex_codes );
}
BLARGG_EXPORT int fex_err_code( fex_err_t err )
{
int code = err_code( err );
return (code >= 0 ? code : fex_err_generic);
}
BLARGG_EXPORT fex_err_t fex_code_to_err( int code )
{
return blargg_code_to_err( code, fex_codes );
}
BLARGG_EXPORT const char* fex_err_details( fex_err_t err )
{
// If we don't have error code assigned, return entire string
return (err_code( err ) >= 0 ? blargg_err_details( err ) : blargg_err_str( err ));
}
//// Wrappers
BLARGG_EXPORT fex_err_t fex_read( fex_t* fe, void* out, int count )
{
RETURN_ERR( fe->stat() );
return fe->reader().read( out, count );
}
BLARGG_EXPORT void fex_close ( fex_t* fe ) { delete fe; }
BLARGG_EXPORT fex_type_t fex_type ( const fex_t* fe ) { return fe->type(); }
BLARGG_EXPORT int fex_done ( const fex_t* fe ) { return fe->done(); }
BLARGG_EXPORT const char* fex_name ( const fex_t* fe ) { return fe->name(); }
BLARGG_EXPORT const wchar_t* fex_wname ( const fex_t* fe ) { return fe->wname(); }
BLARGG_EXPORT int fex_size ( const fex_t* fe ) { return fe->size(); }
BLARGG_EXPORT unsigned fex_dos_date ( const fex_t* fe ) { return fe->dos_date(); }
BLARGG_EXPORT unsigned fex_crc32 ( const fex_t* fe ) { return fe->crc32(); }
BLARGG_EXPORT fex_err_t fex_stat ( fex_t* fe ) { return fe->stat(); }
BLARGG_EXPORT fex_err_t fex_next ( fex_t* fe ) { return fe->next(); }
BLARGG_EXPORT fex_err_t fex_rewind ( fex_t* fe ) { return fe->rewind(); }
BLARGG_EXPORT int fex_tell ( const fex_t* fe ) { return fe->tell(); }
BLARGG_EXPORT fex_pos_t fex_tell_arc ( const fex_t* fe ) { return fe->tell_arc(); }
BLARGG_EXPORT fex_err_t fex_seek_arc ( fex_t* fe, fex_pos_t pos ) { return fe->seek_arc( pos ); }
BLARGG_EXPORT const char* fex_type_extension ( fex_type_t t ) { return t->extension; }
BLARGG_EXPORT const char* fex_type_name ( fex_type_t t ) { return t->name; }
BLARGG_EXPORT fex_err_t fex_data ( fex_t* fe, const void** data_out ) { return fe->data( data_out ); }
BLARGG_EXPORT const char* fex_err_str ( fex_err_t err ) { return blargg_err_str( err ); }

204
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/** Uniform access to zip, gzip, 7-zip, and RAR compressed archives \file */
/* File_Extractor 1.0.0 */
#ifndef FEX_H
#define FEX_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/** First parameter of most functions is fex_t*, or const fex_t* if nothing is
changed. Once one of these functions returns an error, the archive should not
be used any further, other than to close it. One exception is
fex_error_file_eof; the archive may still be used after this. */
typedef struct fex_t fex_t;
/** Pointer to error, or NULL if function was successful. See error functions
below. */
#ifndef fex_err_t /* (#ifndef allows better testing of library) */
typedef const char* fex_err_t;
#endif
/**** File types ****/
/** Archive file type identifier. Can also hold NULL. */
typedef const struct fex_type_t_* fex_type_t;
/** Array of supported types, with NULL at end */
const fex_type_t* fex_type_list( void );
/** Name of this archive type, e.g. "ZIP archive", "file" */
const char* fex_type_name( fex_type_t );
/** Usual file extension for type, e.g. ".zip", ".7z". For binary file type,
returns "", since it can open any file. */
const char* fex_type_extension( fex_type_t );
/**** Wide-character file paths ****/
/** Converts wide-character path to form suitable for use with fex functions. */
char* fex_wide_to_path( const wchar_t* wide );
/** Frees converted path. OK to pass NULL. */
void fex_free_path( char* );
/**** Identification ****/
/** True if str ends in extension. If extension is "", always returns true.
Converts str to lowercase before comparison, so extension should ALREADY be
lowercase (i.e. pass ".zip", NOT ".ZIP"). */
int fex_has_extension( const char str [], const char extension [] );
/** Determines type based on first fex_identify_header_size bytes of file.
Returns usual file extension this should have (e.g. ".zip", ".gz", etc.).
Returns "" if file header is not recognized. */
const char* fex_identify_header( const void* header );
enum { fex_identify_header_size = 16 };
/** Determines type based on extension of a file path, or just a lone extension
(must include '.', e.g. ".zip", NOT just "zip"). Returns NULL if extension is
for an unsupported type (e.g. ".lzh"). */
fex_type_t fex_identify_extension( const char path_or_extension [] );
/** Determines type based on filename extension and/or file header. Sets *out
to determined type, or NULL if type is not supported. */
fex_err_t fex_identify_file( fex_type_t* out, const char path [] );
/** Type of an already-opened archive */
fex_type_t fex_type( const fex_t* );
/**** Open/close ****/
/** Initializes static tables used by library. Automatically called by
fex_open(). OK to call more than once. */
fex_err_t fex_init( void );
/** Opens archive and points *out at it. If error, sets *out to NULL. */
fex_err_t fex_open( fex_t** out, const char path [] );
/** Opens archive of specified type and sets *out. Returns error if file is not
of that archive type. If error, sets *out to NULL. */
fex_err_t fex_open_type( fex_t** out, const char path [], fex_type_t );
/** Closes archive and frees memory. OK to pass NULL. */
void fex_close( fex_t* );
/**** Scanning ****/
/** True if at end of archive. Must be called after fex_open() or fex_rewind(),
as an archive might contain no files. */
int fex_done( const fex_t* );
/** Goes to next file in archive. If there are no more files, fex_done() will
now return true. */
fex_err_t fex_next( fex_t* );
/** Goes back to first file in archive, as if it were just opened with
fex_open() */
fex_err_t fex_rewind( fex_t* );
/** Saved position in archive. Can also store zero. */
typedef int fex_pos_t;
/** Position of current file in archive. Never returns zero. */
fex_pos_t fex_tell_arc( const fex_t* );
/** Returns to file at previously-saved position */
fex_err_t fex_seek_arc( fex_t*, fex_pos_t );
/**** Info ****/
/** Name of current file */
const char* fex_name( const fex_t* );
/** Wide-character name of current file, or NULL if unavailable */
const wchar_t* fex_wname( const fex_t* );
/** Makes further information available for file */
fex_err_t fex_stat( fex_t* );
/** Size of current file. fex_stat() or fex_data() must have been called. */
int fex_size( const fex_t* );
/** Modification date of current file (MS-DOS format), or 0 if unavailable.
fex_stat() must have been called. */
unsigned int fex_dos_date( const fex_t* );
/** CRC-32 checksum of current file's contents, or 0 if unavailable. Doesn't
require calculation; simply gets it from file's header. fex_stat() must have
been called. */
unsigned int fex_crc32( const fex_t* );
/**** Extraction ****/
/** Reads n bytes from current file. Reading past end of file results in
fex_err_file_eof. */
fex_err_t fex_read( fex_t*, void* out, int n );
/** Number of bytes read from current file */
int fex_tell( const fex_t* );
/** Points *out at current file's data in memory. Pointer is valid until
fex_next(), fex_rewind(), fex_seek_arc(), or fex_close() is called. Pointer
must NOT be freed(); library frees it automatically. If error, sets *out to
NULL. */
fex_err_t fex_data( fex_t*, const void** out );
/**** Errors ****/
/** Error string associated with err. Returns "" if err is NULL. Returns err
unchanged if it isn't a fex_err_t returned by library. */
const char* fex_err_str( fex_err_t err );
/** Details of error beyond main cause, or "" if none or err is NULL. Returns
err unchanged if it isn't a fex_err_t returned by library. */
const char* fex_err_details( fex_err_t err );
/** Numeric code corresponding to err. Returns fex_ok if err is NULL. Returns
fex_err_generic if err isn't a fex_err_t returned by library. */
int fex_err_code( fex_err_t err );
enum {
fex_ok = 0,/**< Successful call. Guaranteed to be zero. */
fex_err_generic = 0x01,/**< Error of unspecified type */
fex_err_memory = 0x02,/**< Out of memory */
fex_err_caller = 0x03,/**< Caller called function with bad args */
fex_err_internal = 0x04,/**< Internal problem, bug, etc. */
fex_err_limitation = 0x05,/**< Exceeded program limit */
fex_err_file_missing = 0x20,/**< File not found at specified path */
fex_err_file_read = 0x21,/**< Couldn't open file for reading */
fex_err_file_io = 0x23,/**< Read/write error */
fex_err_file_eof = 0x25,/**< Tried to read past end of file */
fex_err_file_type = 0x30,/**< File is of wrong type */
fex_err_file_feature = 0x32,/**< File requires unsupported feature */
fex_err_file_corrupt = 0x33 /**< File is corrupt */
};
/** fex_err_t corresponding to numeric code. Note that this might not recover
the original fex_err_t before it was converted to a numeric code; in
particular, fex_err_details(fex_code_to_err(code)) will be "" in most cases. */
fex_err_t fex_code_to_err( int code );
/* Deprecated */
typedef fex_t File_Extractor;
#ifdef __cplusplus
}
#endif
#endif

91
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File_Extractor library internals
--------------------------------
This describes the implementation and design.
Contents
--------
* Framework
* Archive abstraction
* 7-ZIP
* ZIP
* RAR
* GZIP
* Binary
Framework
---------
This library is essentially:
* Several archive readers
* Wrappers to provide common interface
* File type detection
The File_Extractor base class implements the common aspects of the
interface and filters out invalid calls. It also provides default
implementations for some operations. Each derived *_Extractor class then
wraps the particular library.
Then fex.h provides a stable, C-compatible wrapper over File_Extractor,
and does file type identification.
Archive abstraction
-------------------
An extractor is abstracted to these fundamental operations:
* Open (either from path or custom reader)
* Iterate over each file
* Extract file's data (either gradually, or all at once into memory)
* Seek to particular file in archive
* Close
The extractor can choose whether to open a file path immediately, or
defer until the first stat() call. When extracting data, it can
implement one or both of normal read and "give me a pointer to the data
already in memory". If it only implements one, File_Extractor will
implement the other in terms of it.
7-ZIP
-----
A fairly simple wrapper over a slightly-modified LZMA library.
Unfortunately you probably won't be able to drop a later version of the
LZMA library sources in and recompile, as the interface and file
arrangement tends to change with every release. The main change I've
made is to declare functions extern "C" in headers, so C++ code can call
them.
ZIP
---
A complete implementation I wrote. Has nifty optimization that makes all
disk reads begin and end on a multiple of 4K. Also minimizes number of
accesses when initially reading catalog, and extracting file data.
Correctly handles empty zip archives, unlike the popular unzip library
which reports it as a bad archive.
RAR
---
Wrapper over heavily-modified UnRAR extraction library based on the
official UnRAR sources. The library is available separately with
documentation and demos, in case you want to use it without the
File_Extractor front-end (see unrar/changes.txt for more).
GZIP
----
Uses zlib's built-in parsing. Also works with non-gzipped files, based
on absence of two-byte Gzip header. Defers opening of file until
fex_stat(), speeding mere scanning of filenames. Gzip_Reader and
Zlib_Reader further divide the implementation into more manageable and
reusable components.
Binary
------
Just a minimal wrapper over C-style FILE.
--
Shay Green <gblargg@gmail.com>

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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the Lesser GPL. It also counts
as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it. You
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That's all there is to it!

59
fex/readme.txt
View File

@ -1,59 +0,0 @@
File_Extractor 1.0.0
--------------------
File_Extractor is a modular archive scanning and extraction library that
supports several popular compressed file formats. It gives a common
interface to the supported formats, allowing one version of user code.
Features:
* Simple C interface.
* Supports ZIP, GZIP, 7-Zip (7Z), and RAR[1] archive formats.
* Non-archive files act like archive of that one file, simplifying code.
* Modular design allows removal of support for unneeded archive formats.
* Optionally supports wide-character paths on Windows.
* Archive file type identification can be customized
[1] RAR support must be enabled before use, due to its special
licensing.
Author : Shay Green <gblargg@gmail.com>
Website : http://code.google.com/p/file-extractor/
License : GNU LGPL 2.1 or later for all except unrar
Language: C interface, C++ implementation
Getting Started
---------------
Build the demo by typing "make" at the command-line. If that doesn't
work, manually build a program from demo.c and all *.c and *.cpp files
in fex/, 7z_C/, and zlib/. Run demo with test.zip in the same directory.
To enable RAR archive support, edit fex/blargg_config.h.
See fex.h for reference and fex.txt for documentation.
Files
-----
fex.txt Manual
license.txt GNU LGPL 2.1 license
makefile Builds libfex.a and demo
demo.c Basic usage
demo_read.c Uses fex_read() to extract data
demo_rewind.c Uses fex_rewind() to re-scan archive
demo_seek.c Uses fex_seek_arc() to go back to files
demo_directory.c Recursively scans directory for archives
demo.zip Test archive used by demos
fex/
blargg_config.h Configuration (modify as needed)
fex.h C interface (also usable from C++)
(all other files) Library sources
zlib/ Zip/Gzip (can use your system's instead)
7z_C/ 7-Zip
unrar/ RAR
--
Shay Green <gblargg@gmail.com>