mirror of
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Fix more CRLF EOL
This commit is contained in:
Con Kolivas
parent
b31b370b01
commit
e3916090a4
388
lzma/7zC.txt
388
lzma/7zC.txt
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@ -1,194 +1,194 @@
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7z ANSI-C Decoder 4.62
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----------------------
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7z ANSI-C provides 7z/LZMA decoding.
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7z ANSI-C version is simplified version ported from C++ code.
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LZMA is default and general compression method of 7z format
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in 7-Zip compression program (www.7-zip.org). LZMA provides high
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compression ratio and very fast decompression.
|
||||
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||||
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LICENSE
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-------
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7z ANSI-C Decoder is part of the LZMA SDK.
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LZMA SDK is written and placed in the public domain by Igor Pavlov.
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Files
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---------------------
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7zDecode.* - Low level 7z decoding
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7zExtract.* - High level 7z decoding
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7zHeader.* - .7z format constants
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7zIn.* - .7z archive opening
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7zItem.* - .7z structures
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7zMain.c - Test application
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How To Use
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----------
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You must download 7-Zip program from www.7-zip.org.
|
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You can create .7z archive with 7z.exe or 7za.exe:
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7za.exe a archive.7z *.htm -r -mx -m0fb=255
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If you have big number of files in archive, and you need fast extracting,
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you can use partly-solid archives:
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7za.exe a archive.7z *.htm -ms=512K -r -mx -m0fb=255 -m0d=512K
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In that example 7-Zip will use 512KB solid blocks. So it needs to decompress only
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512KB for extracting one file from such archive.
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||||
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Limitations of current version of 7z ANSI-C Decoder
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---------------------------------------------------
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- It reads only "FileName", "Size", "LastWriteTime" and "CRC" information for each file in archive.
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- It supports only LZMA and Copy (no compression) methods with BCJ or BCJ2 filters.
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- It converts original UTF-16 Unicode file names to UTF-8 Unicode file names.
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||||
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These limitations will be fixed in future versions.
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Using 7z ANSI-C Decoder Test application:
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-----------------------------------------
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Usage: 7zDec <command> <archive_name>
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<Command>:
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e: Extract files from archive
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l: List contents of archive
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t: Test integrity of archive
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Example:
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7zDec l archive.7z
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lists contents of archive.7z
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7zDec e archive.7z
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extracts files from archive.7z to current folder.
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How to use .7z Decoder
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----------------------
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Memory allocation
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~~~~~~~~~~~~~~~~~
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7z Decoder uses two memory pools:
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1) Temporary pool
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2) Main pool
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Such scheme can allow you to avoid fragmentation of allocated blocks.
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Steps for using 7z decoder
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--------------------------
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Use code at 7zMain.c as example.
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1) Declare variables:
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inStream /* implements ILookInStream interface */
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CSzArEx db; /* 7z archive database structure */
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ISzAlloc allocImp; /* memory functions for main pool */
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ISzAlloc allocTempImp; /* memory functions for temporary pool */
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2) call CrcGenerateTable(); function to initialize CRC structures.
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3) call SzArEx_Init(&db); function to initialize db structures.
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4) call SzArEx_Open(&db, inStream, &allocMain, &allocTemp) to open archive
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This function opens archive "inStream" and reads headers to "db".
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All items in "db" will be allocated with "allocMain" functions.
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SzArEx_Open function allocates and frees temporary structures by "allocTemp" functions.
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5) List items or Extract items
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Listing code:
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~~~~~~~~~~~~~
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{
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UInt32 i;
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for (i = 0; i < db.db.NumFiles; i++)
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{
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CFileItem *f = db.db.Files + i;
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printf("%10d %s\n", (int)f->Size, f->Name);
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}
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}
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Extracting code:
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~~~~~~~~~~~~~~~~
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SZ_RESULT SzAr_Extract(
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CArchiveDatabaseEx *db,
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ILookInStream *inStream,
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UInt32 fileIndex, /* index of file */
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UInt32 *blockIndex, /* index of solid block */
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Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
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size_t *outBufferSize, /* buffer size for output buffer */
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size_t *offset, /* offset of stream for required file in *outBuffer */
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size_t *outSizeProcessed, /* size of file in *outBuffer */
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ISzAlloc *allocMain,
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ISzAlloc *allocTemp);
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If you need to decompress more than one file, you can send these values from previous call:
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blockIndex,
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outBuffer,
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outBufferSize,
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You can consider "outBuffer" as cache of solid block. If your archive is solid,
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it will increase decompression speed.
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After decompressing you must free "outBuffer":
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allocImp.Free(outBuffer);
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6) call SzArEx_Free(&db, allocImp.Free) to free allocated items in "db".
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Memory requirements for .7z decoding
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------------------------------------
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Memory usage for Archive opening:
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- Temporary pool:
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- Memory for uncompressed .7z headers
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- some other temporary blocks
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- Main pool:
|
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- Memory for database:
|
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Estimated size of one file structures in solid archive:
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- Size (4 or 8 Bytes)
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- CRC32 (4 bytes)
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- LastWriteTime (8 bytes)
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- Some file information (4 bytes)
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- File Name (variable length) + pointer + allocation structures
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Memory usage for archive Decompressing:
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- Temporary pool:
|
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- Memory for LZMA decompressing structures
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- Main pool:
|
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- Memory for decompressed solid block
|
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- Memory for temprorary buffers, if BCJ2 fileter is used. Usually these
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temprorary buffers can be about 15% of solid block size.
|
||||
|
||||
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7z Decoder doesn't allocate memory for compressed blocks.
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Instead of this, you must allocate buffer with desired
|
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size before calling 7z Decoder. Use 7zMain.c as example.
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Defines
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-------
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_SZ_ALLOC_DEBUG - define it if you want to debug alloc/free operations to stderr.
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---
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http://www.7-zip.org
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http://www.7-zip.org/sdk.html
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http://www.7-zip.org/support.html
|
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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
|
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7zIn.* - .7z archive opening
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7zItem.* - .7z structures
|
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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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@ -1,471 +1,471 @@
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7z Format description (2.30 Beta 25)
|
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-----------------------------------
|
||||
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||||
This file contains description of 7z archive format.
|
||||
7z archive can contain files compressed with any method.
|
||||
See "Methods.txt" for description for defined compressing methods.
|
||||
|
||||
|
||||
Format structure Overview
|
||||
-------------------------
|
||||
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||||
Some fields can be optional.
|
||||
|
||||
Archive structure
|
||||
~~~~~~~~~~~~~~~~~
|
||||
SignatureHeader
|
||||
[PackedStreams]
|
||||
[PackedStreamsForHeaders]
|
||||
[
|
||||
Header
|
||||
or
|
||||
{
|
||||
Packed Header
|
||||
HeaderInfo
|
||||
}
|
||||
]
|
||||
|
||||
|
||||
|
||||
Header structure
|
||||
~~~~~~~~~~~~~~~~
|
||||
{
|
||||
ArchiveProperties
|
||||
AdditionalStreams
|
||||
{
|
||||
PackInfo
|
||||
{
|
||||
PackPos
|
||||
NumPackStreams
|
||||
Sizes[NumPackStreams]
|
||||
CRCs[NumPackStreams]
|
||||
}
|
||||
CodersInfo
|
||||
{
|
||||
NumFolders
|
||||
Folders[NumFolders]
|
||||
{
|
||||
NumCoders
|
||||
CodersInfo[NumCoders]
|
||||
{
|
||||
ID
|
||||
NumInStreams;
|
||||
NumOutStreams;
|
||||
PropertiesSize
|
||||
Properties[PropertiesSize]
|
||||
}
|
||||
NumBindPairs
|
||||
BindPairsInfo[NumBindPairs]
|
||||
{
|
||||
InIndex;
|
||||
OutIndex;
|
||||
}
|
||||
PackedIndices
|
||||
}
|
||||
UnPackSize[Folders][Folders.NumOutstreams]
|
||||
CRCs[NumFolders]
|
||||
}
|
||||
SubStreamsInfo
|
||||
{
|
||||
NumUnPackStreamsInFolders[NumFolders];
|
||||
UnPackSizes[]
|
||||
CRCs[]
|
||||
}
|
||||
}
|
||||
MainStreamsInfo
|
||||
{
|
||||
(Same as in AdditionalStreams)
|
||||
}
|
||||
FilesInfo
|
||||
{
|
||||
NumFiles
|
||||
Properties[]
|
||||
{
|
||||
ID
|
||||
Size
|
||||
Data
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
HeaderInfo structure
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
{
|
||||
(Same as in AdditionalStreams)
|
||||
}
|
||||
|
||||
|
||||
|
||||
Notes about Notation and encoding
|
||||
---------------------------------
|
||||
|
||||
7z uses little endian encoding.
|
||||
|
||||
7z archive format has optional headers that are marked as
|
||||
[]
|
||||
Header
|
||||
[]
|
||||
|
||||
REAL_UINT64 means real UINT64.
|
||||
|
||||
UINT64 means real UINT64 encoded with the following scheme:
|
||||
|
||||
Size of encoding sequence depends from first byte:
|
||||
First_Byte Extra_Bytes Value
|
||||
(binary)
|
||||
0xxxxxxx : ( xxxxxxx )
|
||||
10xxxxxx BYTE y[1] : ( xxxxxx << (8 * 1)) + y
|
||||
110xxxxx BYTE y[2] : ( xxxxx << (8 * 2)) + y
|
||||
...
|
||||
1111110x BYTE y[6] : ( x << (8 * 6)) + y
|
||||
11111110 BYTE y[7] : y
|
||||
11111111 BYTE y[8] : y
|
||||
|
||||
|
||||
|
||||
Property IDs
|
||||
------------
|
||||
|
||||
0x00 = kEnd,
|
||||
|
||||
0x01 = kHeader,
|
||||
|
||||
0x02 = kArchiveProperties,
|
||||
|
||||
0x03 = kAdditionalStreamsInfo,
|
||||
0x04 = kMainStreamsInfo,
|
||||
0x05 = kFilesInfo,
|
||||
|
||||
0x06 = kPackInfo,
|
||||
0x07 = kUnPackInfo,
|
||||
0x08 = kSubStreamsInfo,
|
||||
|
||||
0x09 = kSize,
|
||||
0x0A = kCRC,
|
||||
|
||||
0x0B = kFolder,
|
||||
|
||||
0x0C = kCodersUnPackSize,
|
||||
0x0D = kNumUnPackStream,
|
||||
|
||||
0x0E = kEmptyStream,
|
||||
0x0F = kEmptyFile,
|
||||
0x10 = kAnti,
|
||||
|
||||
0x11 = kName,
|
||||
0x12 = kCreationTime,
|
||||
0x13 = kLastAccessTime,
|
||||
0x14 = kLastWriteTime,
|
||||
0x15 = kWinAttributes,
|
||||
0x16 = kComment,
|
||||
|
||||
0x17 = kEncodedHeader,
|
||||
|
||||
|
||||
7z format headers
|
||||
-----------------
|
||||
|
||||
SignatureHeader
|
||||
~~~~~~~~~~~~~~~
|
||||
BYTE kSignature[6] = {'7', 'z', 0xBC, 0xAF, 0x27, 0x1C};
|
||||
|
||||
ArchiveVersion
|
||||
{
|
||||
BYTE Major; // now = 0
|
||||
BYTE Minor; // now = 2
|
||||
};
|
||||
|
||||
UINT32 StartHeaderCRC;
|
||||
|
||||
StartHeader
|
||||
{
|
||||
REAL_UINT64 NextHeaderOffset
|
||||
REAL_UINT64 NextHeaderSize
|
||||
UINT32 NextHeaderCRC
|
||||
}
|
||||
|
||||
|
||||
...........................
|
||||
|
||||
|
||||
ArchiveProperties
|
||||
~~~~~~~~~~~~~~~~~
|
||||
BYTE NID::kArchiveProperties (0x02)
|
||||
for (;;)
|
||||
{
|
||||
BYTE PropertyType;
|
||||
if (aType == 0)
|
||||
break;
|
||||
UINT64 PropertySize;
|
||||
BYTE PropertyData[PropertySize];
|
||||
}
|
||||
|
||||
|
||||
Digests (NumStreams)
|
||||
~~~~~~~~~~~~~~~~~~~~~
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumStreams)
|
||||
BIT Defined
|
||||
}
|
||||
UINT32 CRCs[NumDefined]
|
||||
|
||||
|
||||
PackInfo
|
||||
~~~~~~~~~~~~
|
||||
BYTE NID::kPackInfo (0x06)
|
||||
UINT64 PackPos
|
||||
UINT64 NumPackStreams
|
||||
|
||||
[]
|
||||
BYTE NID::kSize (0x09)
|
||||
UINT64 PackSizes[NumPackStreams]
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
PackStreamDigests[NumPackStreams]
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
Folder
|
||||
~~~~~~
|
||||
UINT64 NumCoders;
|
||||
for (NumCoders)
|
||||
{
|
||||
BYTE
|
||||
{
|
||||
0:3 DecompressionMethod.IDSize
|
||||
4:
|
||||
0 - IsSimple
|
||||
1 - Is not simple
|
||||
5:
|
||||
0 - No Attributes
|
||||
1 - There Are Attributes
|
||||
7:
|
||||
0 - Last Method in Alternative_Method_List
|
||||
1 - There are more alternative methods
|
||||
}
|
||||
BYTE DecompressionMethod.ID[DecompressionMethod.IDSize]
|
||||
if (!IsSimple)
|
||||
{
|
||||
UINT64 NumInStreams;
|
||||
UINT64 NumOutStreams;
|
||||
}
|
||||
if (DecompressionMethod[0] != 0)
|
||||
{
|
||||
UINT64 PropertiesSize
|
||||
BYTE Properties[PropertiesSize]
|
||||
}
|
||||
}
|
||||
|
||||
NumBindPairs = NumOutStreamsTotal - 1;
|
||||
|
||||
for (NumBindPairs)
|
||||
{
|
||||
UINT64 InIndex;
|
||||
UINT64 OutIndex;
|
||||
}
|
||||
|
||||
NumPackedStreams = NumInStreamsTotal - NumBindPairs;
|
||||
if (NumPackedStreams > 1)
|
||||
for(NumPackedStreams)
|
||||
{
|
||||
UINT64 Index;
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
Coders Info
|
||||
~~~~~~~~~~~
|
||||
|
||||
BYTE NID::kUnPackInfo (0x07)
|
||||
|
||||
|
||||
BYTE NID::kFolder (0x0B)
|
||||
UINT64 NumFolders
|
||||
BYTE External
|
||||
switch(External)
|
||||
{
|
||||
case 0:
|
||||
Folders[NumFolders]
|
||||
case 1:
|
||||
UINT64 DataStreamIndex
|
||||
}
|
||||
|
||||
|
||||
BYTE ID::kCodersUnPackSize (0x0C)
|
||||
for(Folders)
|
||||
for(Folder.NumOutStreams)
|
||||
UINT64 UnPackSize;
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
UnPackDigests[NumFolders]
|
||||
[]
|
||||
|
||||
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
|
||||
SubStreams Info
|
||||
~~~~~~~~~~~~~~
|
||||
BYTE NID::kSubStreamsInfo; (0x08)
|
||||
|
||||
[]
|
||||
BYTE NID::kNumUnPackStream; (0x0D)
|
||||
UINT64 NumUnPackStreamsInFolders[NumFolders];
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kSize (0x09)
|
||||
UINT64 UnPackSizes[]
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
Digests[Number of streams with unknown CRC]
|
||||
[]
|
||||
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
Streams Info
|
||||
~~~~~~~~~~~~
|
||||
|
||||
[]
|
||||
PackInfo
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
CodersInfo
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
SubStreamsInfo
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
FilesInfo
|
||||
~~~~~~~~~
|
||||
BYTE NID::kFilesInfo; (0x05)
|
||||
UINT64 NumFiles
|
||||
|
||||
for (;;)
|
||||
{
|
||||
BYTE PropertyType;
|
||||
if (aType == 0)
|
||||
break;
|
||||
|
||||
UINT64 Size;
|
||||
|
||||
switch(PropertyType)
|
||||
{
|
||||
kEmptyStream: (0x0E)
|
||||
for(NumFiles)
|
||||
BIT IsEmptyStream
|
||||
|
||||
kEmptyFile: (0x0F)
|
||||
for(EmptyStreams)
|
||||
BIT IsEmptyFile
|
||||
|
||||
kAnti: (0x10)
|
||||
for(EmptyStreams)
|
||||
BIT IsAntiFile
|
||||
|
||||
case kCreationTime: (0x12)
|
||||
case kLastAccessTime: (0x13)
|
||||
case kLastWriteTime: (0x14)
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumFiles)
|
||||
BIT TimeDefined
|
||||
}
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Definded Items)
|
||||
UINT32 Time
|
||||
[]
|
||||
|
||||
kNames: (0x11)
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Files)
|
||||
{
|
||||
wchar_t Names[NameSize];
|
||||
wchar_t 0;
|
||||
}
|
||||
[]
|
||||
|
||||
kAttributes: (0x15)
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumFiles)
|
||||
BIT AttributesAreDefined
|
||||
}
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Definded Attributes)
|
||||
UINT32 Attributes
|
||||
[]
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Header
|
||||
~~~~~~
|
||||
BYTE NID::kHeader (0x01)
|
||||
|
||||
[]
|
||||
ArchiveProperties
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kAdditionalStreamsInfo; (0x03)
|
||||
StreamsInfo
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kMainStreamsInfo; (0x04)
|
||||
StreamsInfo
|
||||
[]
|
||||
|
||||
[]
|
||||
FilesInfo
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
HeaderInfo
|
||||
~~~~~~~~~~
|
||||
[]
|
||||
BYTE NID::kEncodedHeader; (0x17)
|
||||
StreamsInfo for Encoded Header
|
||||
[]
|
||||
|
||||
|
||||
---
|
||||
End of document
|
||||
7z Format description (2.30 Beta 25)
|
||||
-----------------------------------
|
||||
|
||||
This file contains description of 7z archive format.
|
||||
7z archive can contain files compressed with any method.
|
||||
See "Methods.txt" for description for defined compressing methods.
|
||||
|
||||
|
||||
Format structure Overview
|
||||
-------------------------
|
||||
|
||||
Some fields can be optional.
|
||||
|
||||
Archive structure
|
||||
~~~~~~~~~~~~~~~~~
|
||||
SignatureHeader
|
||||
[PackedStreams]
|
||||
[PackedStreamsForHeaders]
|
||||
[
|
||||
Header
|
||||
or
|
||||
{
|
||||
Packed Header
|
||||
HeaderInfo
|
||||
}
|
||||
]
|
||||
|
||||
|
||||
|
||||
Header structure
|
||||
~~~~~~~~~~~~~~~~
|
||||
{
|
||||
ArchiveProperties
|
||||
AdditionalStreams
|
||||
{
|
||||
PackInfo
|
||||
{
|
||||
PackPos
|
||||
NumPackStreams
|
||||
Sizes[NumPackStreams]
|
||||
CRCs[NumPackStreams]
|
||||
}
|
||||
CodersInfo
|
||||
{
|
||||
NumFolders
|
||||
Folders[NumFolders]
|
||||
{
|
||||
NumCoders
|
||||
CodersInfo[NumCoders]
|
||||
{
|
||||
ID
|
||||
NumInStreams;
|
||||
NumOutStreams;
|
||||
PropertiesSize
|
||||
Properties[PropertiesSize]
|
||||
}
|
||||
NumBindPairs
|
||||
BindPairsInfo[NumBindPairs]
|
||||
{
|
||||
InIndex;
|
||||
OutIndex;
|
||||
}
|
||||
PackedIndices
|
||||
}
|
||||
UnPackSize[Folders][Folders.NumOutstreams]
|
||||
CRCs[NumFolders]
|
||||
}
|
||||
SubStreamsInfo
|
||||
{
|
||||
NumUnPackStreamsInFolders[NumFolders];
|
||||
UnPackSizes[]
|
||||
CRCs[]
|
||||
}
|
||||
}
|
||||
MainStreamsInfo
|
||||
{
|
||||
(Same as in AdditionalStreams)
|
||||
}
|
||||
FilesInfo
|
||||
{
|
||||
NumFiles
|
||||
Properties[]
|
||||
{
|
||||
ID
|
||||
Size
|
||||
Data
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
HeaderInfo structure
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
{
|
||||
(Same as in AdditionalStreams)
|
||||
}
|
||||
|
||||
|
||||
|
||||
Notes about Notation and encoding
|
||||
---------------------------------
|
||||
|
||||
7z uses little endian encoding.
|
||||
|
||||
7z archive format has optional headers that are marked as
|
||||
[]
|
||||
Header
|
||||
[]
|
||||
|
||||
REAL_UINT64 means real UINT64.
|
||||
|
||||
UINT64 means real UINT64 encoded with the following scheme:
|
||||
|
||||
Size of encoding sequence depends from first byte:
|
||||
First_Byte Extra_Bytes Value
|
||||
(binary)
|
||||
0xxxxxxx : ( xxxxxxx )
|
||||
10xxxxxx BYTE y[1] : ( xxxxxx << (8 * 1)) + y
|
||||
110xxxxx BYTE y[2] : ( xxxxx << (8 * 2)) + y
|
||||
...
|
||||
1111110x BYTE y[6] : ( x << (8 * 6)) + y
|
||||
11111110 BYTE y[7] : y
|
||||
11111111 BYTE y[8] : y
|
||||
|
||||
|
||||
|
||||
Property IDs
|
||||
------------
|
||||
|
||||
0x00 = kEnd,
|
||||
|
||||
0x01 = kHeader,
|
||||
|
||||
0x02 = kArchiveProperties,
|
||||
|
||||
0x03 = kAdditionalStreamsInfo,
|
||||
0x04 = kMainStreamsInfo,
|
||||
0x05 = kFilesInfo,
|
||||
|
||||
0x06 = kPackInfo,
|
||||
0x07 = kUnPackInfo,
|
||||
0x08 = kSubStreamsInfo,
|
||||
|
||||
0x09 = kSize,
|
||||
0x0A = kCRC,
|
||||
|
||||
0x0B = kFolder,
|
||||
|
||||
0x0C = kCodersUnPackSize,
|
||||
0x0D = kNumUnPackStream,
|
||||
|
||||
0x0E = kEmptyStream,
|
||||
0x0F = kEmptyFile,
|
||||
0x10 = kAnti,
|
||||
|
||||
0x11 = kName,
|
||||
0x12 = kCreationTime,
|
||||
0x13 = kLastAccessTime,
|
||||
0x14 = kLastWriteTime,
|
||||
0x15 = kWinAttributes,
|
||||
0x16 = kComment,
|
||||
|
||||
0x17 = kEncodedHeader,
|
||||
|
||||
|
||||
7z format headers
|
||||
-----------------
|
||||
|
||||
SignatureHeader
|
||||
~~~~~~~~~~~~~~~
|
||||
BYTE kSignature[6] = {'7', 'z', 0xBC, 0xAF, 0x27, 0x1C};
|
||||
|
||||
ArchiveVersion
|
||||
{
|
||||
BYTE Major; // now = 0
|
||||
BYTE Minor; // now = 2
|
||||
};
|
||||
|
||||
UINT32 StartHeaderCRC;
|
||||
|
||||
StartHeader
|
||||
{
|
||||
REAL_UINT64 NextHeaderOffset
|
||||
REAL_UINT64 NextHeaderSize
|
||||
UINT32 NextHeaderCRC
|
||||
}
|
||||
|
||||
|
||||
...........................
|
||||
|
||||
|
||||
ArchiveProperties
|
||||
~~~~~~~~~~~~~~~~~
|
||||
BYTE NID::kArchiveProperties (0x02)
|
||||
for (;;)
|
||||
{
|
||||
BYTE PropertyType;
|
||||
if (aType == 0)
|
||||
break;
|
||||
UINT64 PropertySize;
|
||||
BYTE PropertyData[PropertySize];
|
||||
}
|
||||
|
||||
|
||||
Digests (NumStreams)
|
||||
~~~~~~~~~~~~~~~~~~~~~
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumStreams)
|
||||
BIT Defined
|
||||
}
|
||||
UINT32 CRCs[NumDefined]
|
||||
|
||||
|
||||
PackInfo
|
||||
~~~~~~~~~~~~
|
||||
BYTE NID::kPackInfo (0x06)
|
||||
UINT64 PackPos
|
||||
UINT64 NumPackStreams
|
||||
|
||||
[]
|
||||
BYTE NID::kSize (0x09)
|
||||
UINT64 PackSizes[NumPackStreams]
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
PackStreamDigests[NumPackStreams]
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
Folder
|
||||
~~~~~~
|
||||
UINT64 NumCoders;
|
||||
for (NumCoders)
|
||||
{
|
||||
BYTE
|
||||
{
|
||||
0:3 DecompressionMethod.IDSize
|
||||
4:
|
||||
0 - IsSimple
|
||||
1 - Is not simple
|
||||
5:
|
||||
0 - No Attributes
|
||||
1 - There Are Attributes
|
||||
7:
|
||||
0 - Last Method in Alternative_Method_List
|
||||
1 - There are more alternative methods
|
||||
}
|
||||
BYTE DecompressionMethod.ID[DecompressionMethod.IDSize]
|
||||
if (!IsSimple)
|
||||
{
|
||||
UINT64 NumInStreams;
|
||||
UINT64 NumOutStreams;
|
||||
}
|
||||
if (DecompressionMethod[0] != 0)
|
||||
{
|
||||
UINT64 PropertiesSize
|
||||
BYTE Properties[PropertiesSize]
|
||||
}
|
||||
}
|
||||
|
||||
NumBindPairs = NumOutStreamsTotal - 1;
|
||||
|
||||
for (NumBindPairs)
|
||||
{
|
||||
UINT64 InIndex;
|
||||
UINT64 OutIndex;
|
||||
}
|
||||
|
||||
NumPackedStreams = NumInStreamsTotal - NumBindPairs;
|
||||
if (NumPackedStreams > 1)
|
||||
for(NumPackedStreams)
|
||||
{
|
||||
UINT64 Index;
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
Coders Info
|
||||
~~~~~~~~~~~
|
||||
|
||||
BYTE NID::kUnPackInfo (0x07)
|
||||
|
||||
|
||||
BYTE NID::kFolder (0x0B)
|
||||
UINT64 NumFolders
|
||||
BYTE External
|
||||
switch(External)
|
||||
{
|
||||
case 0:
|
||||
Folders[NumFolders]
|
||||
case 1:
|
||||
UINT64 DataStreamIndex
|
||||
}
|
||||
|
||||
|
||||
BYTE ID::kCodersUnPackSize (0x0C)
|
||||
for(Folders)
|
||||
for(Folder.NumOutStreams)
|
||||
UINT64 UnPackSize;
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
UnPackDigests[NumFolders]
|
||||
[]
|
||||
|
||||
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
|
||||
SubStreams Info
|
||||
~~~~~~~~~~~~~~
|
||||
BYTE NID::kSubStreamsInfo; (0x08)
|
||||
|
||||
[]
|
||||
BYTE NID::kNumUnPackStream; (0x0D)
|
||||
UINT64 NumUnPackStreamsInFolders[NumFolders];
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kSize (0x09)
|
||||
UINT64 UnPackSizes[]
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
BYTE NID::kCRC (0x0A)
|
||||
Digests[Number of streams with unknown CRC]
|
||||
[]
|
||||
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
Streams Info
|
||||
~~~~~~~~~~~~
|
||||
|
||||
[]
|
||||
PackInfo
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
CodersInfo
|
||||
[]
|
||||
|
||||
|
||||
[]
|
||||
SubStreamsInfo
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
FilesInfo
|
||||
~~~~~~~~~
|
||||
BYTE NID::kFilesInfo; (0x05)
|
||||
UINT64 NumFiles
|
||||
|
||||
for (;;)
|
||||
{
|
||||
BYTE PropertyType;
|
||||
if (aType == 0)
|
||||
break;
|
||||
|
||||
UINT64 Size;
|
||||
|
||||
switch(PropertyType)
|
||||
{
|
||||
kEmptyStream: (0x0E)
|
||||
for(NumFiles)
|
||||
BIT IsEmptyStream
|
||||
|
||||
kEmptyFile: (0x0F)
|
||||
for(EmptyStreams)
|
||||
BIT IsEmptyFile
|
||||
|
||||
kAnti: (0x10)
|
||||
for(EmptyStreams)
|
||||
BIT IsAntiFile
|
||||
|
||||
case kCreationTime: (0x12)
|
||||
case kLastAccessTime: (0x13)
|
||||
case kLastWriteTime: (0x14)
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumFiles)
|
||||
BIT TimeDefined
|
||||
}
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Definded Items)
|
||||
UINT32 Time
|
||||
[]
|
||||
|
||||
kNames: (0x11)
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Files)
|
||||
{
|
||||
wchar_t Names[NameSize];
|
||||
wchar_t 0;
|
||||
}
|
||||
[]
|
||||
|
||||
kAttributes: (0x15)
|
||||
BYTE AllAreDefined
|
||||
if (AllAreDefined == 0)
|
||||
{
|
||||
for(NumFiles)
|
||||
BIT AttributesAreDefined
|
||||
}
|
||||
BYTE External;
|
||||
if(External != 0)
|
||||
UINT64 DataIndex
|
||||
[]
|
||||
for(Definded Attributes)
|
||||
UINT32 Attributes
|
||||
[]
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Header
|
||||
~~~~~~
|
||||
BYTE NID::kHeader (0x01)
|
||||
|
||||
[]
|
||||
ArchiveProperties
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kAdditionalStreamsInfo; (0x03)
|
||||
StreamsInfo
|
||||
[]
|
||||
|
||||
[]
|
||||
BYTE NID::kMainStreamsInfo; (0x04)
|
||||
StreamsInfo
|
||||
[]
|
||||
|
||||
[]
|
||||
FilesInfo
|
||||
[]
|
||||
|
||||
BYTE NID::kEnd
|
||||
|
||||
|
||||
HeaderInfo
|
||||
~~~~~~~~~~
|
||||
[]
|
||||
BYTE NID::kEncodedHeader; (0x17)
|
||||
StreamsInfo for Encoded Header
|
||||
[]
|
||||
|
||||
|
||||
---
|
||||
End of document
|
||||
|
|
|
|||
|
|
@ -1,105 +1,105 @@
|
|||
|
||||
SECTION .text
|
||||
|
||||
|
||||
|
||||
|
||||
%macro CRC1b 0
|
||||
movzx EDX, BYTE [RSI]
|
||||
inc RSI
|
||||
movzx EBX, AL
|
||||
xor EDX, EBX
|
||||
shr EAX, 8
|
||||
xor EAX, [RDI + RDX * 4]
|
||||
dec R8
|
||||
%endmacro
|
||||
|
||||
|
||||
|
||||
|
||||
align 16
|
||||
global CrcUpdateT8
|
||||
|
||||
CrcUpdateT8:
|
||||
|
||||
push RBX
|
||||
push RSI
|
||||
push RDI
|
||||
push RBP
|
||||
|
||||
mov EAX, ECX
|
||||
mov RSI, RDX
|
||||
mov RDI, R9
|
||||
|
||||
|
||||
test R8, R8
|
||||
jz sl_end
|
||||
sl:
|
||||
test RSI, 7
|
||||
jz sl_end
|
||||
CRC1b
|
||||
jnz sl
|
||||
sl_end:
|
||||
|
||||
cmp R8, 16
|
||||
jb crc_end
|
||||
mov R9, R8
|
||||
and R8, 7
|
||||
add R8, 8
|
||||
sub R9, R8
|
||||
|
||||
add R9, RSI
|
||||
xor EAX, [RSI]
|
||||
mov EBX, [RSI + 4]
|
||||
movzx ECX, BL
|
||||
align 16
|
||||
main_loop:
|
||||
mov EDX, [RDI + RCX*4 + 0C00h]
|
||||
movzx EBP, BH
|
||||
xor EDX, [RDI + RBP*4 + 0800h]
|
||||
shr EBX, 16
|
||||
movzx ECX, BL
|
||||
xor EDX, [RSI + 8]
|
||||
xor EDX, [RDI + RCX*4 + 0400h]
|
||||
movzx ECX, AL
|
||||
movzx EBP, BH
|
||||
xor EDX, [RDI + RBP*4 + 0000h]
|
||||
|
||||
mov EBX, [RSI + 12]
|
||||
|
||||
xor EDX, [RDI + RCX*4 + 01C00h]
|
||||
movzx EBP, AH
|
||||
shr EAX, 16
|
||||
movzx ECX, AL
|
||||
xor EDX, [RDI + RBP*4 + 01800h]
|
||||
movzx EBP, AH
|
||||
mov EAX, [RDI + RCX*4 + 01400h]
|
||||
add RSI, 8
|
||||
xor EAX, [RDI + RBP*4 + 01000h]
|
||||
movzx ECX, BL
|
||||
xor EAX,EDX
|
||||
|
||||
cmp RSI, R9
|
||||
jne main_loop
|
||||
xor EAX, [RSI]
|
||||
|
||||
|
||||
|
||||
crc_end:
|
||||
|
||||
test R8, R8
|
||||
jz fl_end
|
||||
fl:
|
||||
CRC1b
|
||||
jnz fl
|
||||
fl_end:
|
||||
|
||||
pop RBP
|
||||
pop RDI
|
||||
pop RSI
|
||||
pop RBX
|
||||
ret
|
||||
|
||||
%ifidn __OUTPUT_FORMAT__,elf
|
||||
section .note.GNU-stack noalloc noexec nowrite progbits
|
||||
%endif
|
||||
|
||||
SECTION .text
|
||||
|
||||
|
||||
|
||||
|
||||
%macro CRC1b 0
|
||||
movzx EDX, BYTE [RSI]
|
||||
inc RSI
|
||||
movzx EBX, AL
|
||||
xor EDX, EBX
|
||||
shr EAX, 8
|
||||
xor EAX, [RDI + RDX * 4]
|
||||
dec R8
|
||||
%endmacro
|
||||
|
||||
|
||||
|
||||
|
||||
align 16
|
||||
global CrcUpdateT8
|
||||
|
||||
CrcUpdateT8:
|
||||
|
||||
push RBX
|
||||
push RSI
|
||||
push RDI
|
||||
push RBP
|
||||
|
||||
mov EAX, ECX
|
||||
mov RSI, RDX
|
||||
mov RDI, R9
|
||||
|
||||
|
||||
test R8, R8
|
||||
jz sl_end
|
||||
sl:
|
||||
test RSI, 7
|
||||
jz sl_end
|
||||
CRC1b
|
||||
jnz sl
|
||||
sl_end:
|
||||
|
||||
cmp R8, 16
|
||||
jb crc_end
|
||||
mov R9, R8
|
||||
and R8, 7
|
||||
add R8, 8
|
||||
sub R9, R8
|
||||
|
||||
add R9, RSI
|
||||
xor EAX, [RSI]
|
||||
mov EBX, [RSI + 4]
|
||||
movzx ECX, BL
|
||||
align 16
|
||||
main_loop:
|
||||
mov EDX, [RDI + RCX*4 + 0C00h]
|
||||
movzx EBP, BH
|
||||
xor EDX, [RDI + RBP*4 + 0800h]
|
||||
shr EBX, 16
|
||||
movzx ECX, BL
|
||||
xor EDX, [RSI + 8]
|
||||
xor EDX, [RDI + RCX*4 + 0400h]
|
||||
movzx ECX, AL
|
||||
movzx EBP, BH
|
||||
xor EDX, [RDI + RBP*4 + 0000h]
|
||||
|
||||
mov EBX, [RSI + 12]
|
||||
|
||||
xor EDX, [RDI + RCX*4 + 01C00h]
|
||||
movzx EBP, AH
|
||||
shr EAX, 16
|
||||
movzx ECX, AL
|
||||
xor EDX, [RDI + RBP*4 + 01800h]
|
||||
movzx EBP, AH
|
||||
mov EAX, [RDI + RCX*4 + 01400h]
|
||||
add RSI, 8
|
||||
xor EAX, [RDI + RBP*4 + 01000h]
|
||||
movzx ECX, BL
|
||||
xor EAX,EDX
|
||||
|
||||
cmp RSI, R9
|
||||
jne main_loop
|
||||
xor EAX, [RSI]
|
||||
|
||||
|
||||
|
||||
crc_end:
|
||||
|
||||
test R8, R8
|
||||
jz fl_end
|
||||
fl:
|
||||
CRC1b
|
||||
jnz fl
|
||||
fl_end:
|
||||
|
||||
pop RBP
|
||||
pop RDI
|
||||
pop RSI
|
||||
pop RBX
|
||||
ret
|
||||
|
||||
%ifidn __OUTPUT_FORMAT__,elf
|
||||
section .note.GNU-stack noalloc noexec nowrite progbits
|
||||
%endif
|
||||
|
|
|
|||
282
lzma/Methods.txt
282
lzma/Methods.txt
|
|
@ -1,141 +1,141 @@
|
|||
7-Zip method IDs (4.61)
|
||||
-----------------------
|
||||
|
||||
Each compression or crypto method in 7z has unique binary value (ID).
|
||||
The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes).
|
||||
|
||||
If you want to add some new ID, you have two ways:
|
||||
1) Write request for allocating IDs to 7-zip developers.
|
||||
2) Generate 8-bytes ID:
|
||||
|
||||
3F ZZ ZZ ZZ ZZ ZZ MM MM
|
||||
|
||||
3F - Prefix for random IDs (1 byte)
|
||||
ZZ ZZ ZZ ZZ ZZ - Developer ID (5 bytes). Use real random bytes.
|
||||
|
||||
MM MM - Method ID (2 bytes)
|
||||
|
||||
You can notify 7-Zip developers about your Developer ID / Method ID.
|
||||
|
||||
Note: Use new ID only if old codec can not decode data encoded with new version.
|
||||
|
||||
|
||||
List of defined IDs
|
||||
-------------------
|
||||
|
||||
00 - Copy
|
||||
01 - Reserved
|
||||
02 - Common
|
||||
03 Swap
|
||||
- 2 Swap2
|
||||
- 4 Swap4
|
||||
04 Delta (subject to change)
|
||||
|
||||
03 - 7z
|
||||
01 - LZMA
|
||||
01 - Version
|
||||
|
||||
03 - Branch
|
||||
01 - x86
|
||||
03 - BCJ
|
||||
1B - BCJ2
|
||||
02 - PPC
|
||||
05 - PPC (Big Endian)
|
||||
03 - Alpha
|
||||
01 - Alpha
|
||||
04 - IA64
|
||||
01 - IA64
|
||||
05 - ARM
|
||||
01 - ARM
|
||||
06 - M68
|
||||
05 - M68 (Big Endian)
|
||||
07 - ARM Thumb
|
||||
01 - ARMT
|
||||
08 - SPARC
|
||||
05 - SPARC
|
||||
|
||||
04 - PPMD
|
||||
01 - Version
|
||||
|
||||
7F -
|
||||
01 - experimental methods.
|
||||
|
||||
80 - reserved for independent developers
|
||||
|
||||
E0 - Random IDs
|
||||
|
||||
04 - Misc
|
||||
00 - Reserved
|
||||
01 - Zip
|
||||
00 - Copy (not used). Use {00} instead
|
||||
01 - Shrink
|
||||
06 - Implode
|
||||
08 - Deflate
|
||||
09 - Deflate64
|
||||
12 - BZip2 (not used). Use {04 02 02} instead
|
||||
02 - BZip
|
||||
02 - BZip2
|
||||
03 - Rar
|
||||
01 - Rar15
|
||||
02 - Rar20
|
||||
03 - Rar29
|
||||
04 - Arj
|
||||
01 - Arj (1,2,3)
|
||||
02 - Arj 4
|
||||
05 - Z
|
||||
06 - Lzh
|
||||
07 - Reserved for 7z
|
||||
08 - Cab
|
||||
09 - NSIS
|
||||
01 - DeflateNSIS
|
||||
02 - BZip2NSIS
|
||||
|
||||
|
||||
06 - Crypto
|
||||
00 -
|
||||
01 - AES
|
||||
0x - AES-128
|
||||
4x - AES-192
|
||||
8x - AES-256
|
||||
Cx - AES
|
||||
|
||||
x0 - ECB
|
||||
x1 - CBC
|
||||
x2 - CFB
|
||||
x3 - OFB
|
||||
|
||||
07 - Reserved
|
||||
0F - Reserved
|
||||
|
||||
F0 - Misc Ciphers (Real Ciphers without hashing algo)
|
||||
|
||||
F1 - Misc Ciphers (Combine)
|
||||
01 - Zip
|
||||
01 - Main Zip crypto algo
|
||||
03 - RAR
|
||||
02 -
|
||||
03 - Rar29 AES-128 + (modified SHA-1)
|
||||
07 - 7z
|
||||
01 - AES-256 + SHA-256
|
||||
|
||||
07 - Hash (subject to change)
|
||||
00 -
|
||||
01 - CRC
|
||||
02 - SHA-1
|
||||
03 - SHA-256
|
||||
04 - SHA-384
|
||||
05 - SHA-512
|
||||
|
||||
F0 - Misc Hash
|
||||
|
||||
F1 - Misc
|
||||
03 - RAR
|
||||
03 - Rar29 Password Hashing (modified SHA1)
|
||||
07 - 7z
|
||||
01 - SHA-256 Password Hashing
|
||||
|
||||
|
||||
|
||||
|
||||
---
|
||||
End of document
|
||||
7-Zip method IDs (4.61)
|
||||
-----------------------
|
||||
|
||||
Each compression or crypto method in 7z has unique binary value (ID).
|
||||
The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes).
|
||||
|
||||
If you want to add some new ID, you have two ways:
|
||||
1) Write request for allocating IDs to 7-zip developers.
|
||||
2) Generate 8-bytes ID:
|
||||
|
||||
3F ZZ ZZ ZZ ZZ ZZ MM MM
|
||||
|
||||
3F - Prefix for random IDs (1 byte)
|
||||
ZZ ZZ ZZ ZZ ZZ - Developer ID (5 bytes). Use real random bytes.
|
||||
|
||||
MM MM - Method ID (2 bytes)
|
||||
|
||||
You can notify 7-Zip developers about your Developer ID / Method ID.
|
||||
|
||||
Note: Use new ID only if old codec can not decode data encoded with new version.
|
||||
|
||||
|
||||
List of defined IDs
|
||||
-------------------
|
||||
|
||||
00 - Copy
|
||||
01 - Reserved
|
||||
02 - Common
|
||||
03 Swap
|
||||
- 2 Swap2
|
||||
- 4 Swap4
|
||||
04 Delta (subject to change)
|
||||
|
||||
03 - 7z
|
||||
01 - LZMA
|
||||
01 - Version
|
||||
|
||||
03 - Branch
|
||||
01 - x86
|
||||
03 - BCJ
|
||||
1B - BCJ2
|
||||
02 - PPC
|
||||
05 - PPC (Big Endian)
|
||||
03 - Alpha
|
||||
01 - Alpha
|
||||
04 - IA64
|
||||
01 - IA64
|
||||
05 - ARM
|
||||
01 - ARM
|
||||
06 - M68
|
||||
05 - M68 (Big Endian)
|
||||
07 - ARM Thumb
|
||||
01 - ARMT
|
||||
08 - SPARC
|
||||
05 - SPARC
|
||||
|
||||
04 - PPMD
|
||||
01 - Version
|
||||
|
||||
7F -
|
||||
01 - experimental methods.
|
||||
|
||||
80 - reserved for independent developers
|
||||
|
||||
E0 - Random IDs
|
||||
|
||||
04 - Misc
|
||||
00 - Reserved
|
||||
01 - Zip
|
||||
00 - Copy (not used). Use {00} instead
|
||||
01 - Shrink
|
||||
06 - Implode
|
||||
08 - Deflate
|
||||
09 - Deflate64
|
||||
12 - BZip2 (not used). Use {04 02 02} instead
|
||||
02 - BZip
|
||||
02 - BZip2
|
||||
03 - Rar
|
||||
01 - Rar15
|
||||
02 - Rar20
|
||||
03 - Rar29
|
||||
04 - Arj
|
||||
01 - Arj (1,2,3)
|
||||
02 - Arj 4
|
||||
05 - Z
|
||||
06 - Lzh
|
||||
07 - Reserved for 7z
|
||||
08 - Cab
|
||||
09 - NSIS
|
||||
01 - DeflateNSIS
|
||||
02 - BZip2NSIS
|
||||
|
||||
|
||||
06 - Crypto
|
||||
00 -
|
||||
01 - AES
|
||||
0x - AES-128
|
||||
4x - AES-192
|
||||
8x - AES-256
|
||||
Cx - AES
|
||||
|
||||
x0 - ECB
|
||||
x1 - CBC
|
||||
x2 - CFB
|
||||
x3 - OFB
|
||||
|
||||
07 - Reserved
|
||||
0F - Reserved
|
||||
|
||||
F0 - Misc Ciphers (Real Ciphers without hashing algo)
|
||||
|
||||
F1 - Misc Ciphers (Combine)
|
||||
01 - Zip
|
||||
01 - Main Zip crypto algo
|
||||
03 - RAR
|
||||
02 -
|
||||
03 - Rar29 AES-128 + (modified SHA-1)
|
||||
07 - 7z
|
||||
01 - AES-256 + SHA-256
|
||||
|
||||
07 - Hash (subject to change)
|
||||
00 -
|
||||
01 - CRC
|
||||
02 - SHA-1
|
||||
03 - SHA-256
|
||||
04 - SHA-384
|
||||
05 - SHA-512
|
||||
|
||||
F0 - Misc Hash
|
||||
|
||||
F1 - Misc
|
||||
03 - RAR
|
||||
03 - Rar29 Password Hashing (modified SHA1)
|
||||
07 - 7z
|
||||
01 - SHA-256 Password Hashing
|
||||
|
||||
|
||||
|
||||
|
||||
---
|
||||
End of document
|
||||
|
|
|
|||
462
lzma/history.txt
462
lzma/history.txt
|
|
@ -1,231 +1,231 @@
|
|||
HISTORY of the LZMA SDK
|
||||
-----------------------
|
||||
|
||||
4.63 2008-12-31
|
||||
-------------------------
|
||||
- Some minor fixes
|
||||
|
||||
|
||||
4.61 beta 2008-11-23
|
||||
-------------------------
|
||||
- The bug in ANSI-C LZMA Decoder was fixed:
|
||||
If encoded stream was corrupted, decoder could access memory
|
||||
outside of allocated range.
|
||||
- Some changes in ANSI-C 7z Decoder interfaces.
|
||||
- LZMA SDK is placed in the public domain.
|
||||
|
||||
|
||||
4.60 beta 2008-08-19
|
||||
-------------------------
|
||||
- Some minor fixes.
|
||||
|
||||
|
||||
4.59 beta 2008-08-13
|
||||
-------------------------
|
||||
- The bug was fixed:
|
||||
LZMA Encoder in fast compression mode could access memory outside of
|
||||
allocated range in some rare cases.
|
||||
|
||||
|
||||
4.58 beta 2008-05-05
|
||||
-------------------------
|
||||
- ANSI-C LZMA Decoder was rewritten for speed optimizations.
|
||||
- ANSI-C LZMA Encoder was included to LZMA SDK.
|
||||
- C++ LZMA code now is just wrapper over ANSI-C code.
|
||||
|
||||
|
||||
4.57 2007-12-12
|
||||
-------------------------
|
||||
- Speed optimizations in Ñ++ LZMA Decoder.
|
||||
- Small changes for more compatibility with some C/C++ compilers.
|
||||
|
||||
|
||||
4.49 beta 2007-07-05
|
||||
-------------------------
|
||||
- .7z ANSI-C Decoder:
|
||||
- now it supports BCJ and BCJ2 filters
|
||||
- now it supports files larger than 4 GB.
|
||||
- now it supports "Last Write Time" field for files.
|
||||
- C++ code for .7z archives compressing/decompressing from 7-zip
|
||||
was included to LZMA SDK.
|
||||
|
||||
|
||||
4.43 2006-06-04
|
||||
-------------------------
|
||||
- Small changes for more compatibility with some C/C++ compilers.
|
||||
|
||||
|
||||
4.42 2006-05-15
|
||||
-------------------------
|
||||
- Small changes in .h files in ANSI-C version.
|
||||
|
||||
|
||||
4.39 beta 2006-04-14
|
||||
-------------------------
|
||||
- The bug in versions 4.33b:4.38b was fixed:
|
||||
C++ version of LZMA encoder could not correctly compress
|
||||
files larger than 2 GB with HC4 match finder (-mfhc4).
|
||||
|
||||
|
||||
4.37 beta 2005-04-06
|
||||
-------------------------
|
||||
- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined.
|
||||
|
||||
|
||||
4.35 beta 2005-03-02
|
||||
-------------------------
|
||||
- The bug was fixed in C++ version of LZMA Decoder:
|
||||
If encoded stream was corrupted, decoder could access memory
|
||||
outside of allocated range.
|
||||
|
||||
|
||||
4.34 beta 2006-02-27
|
||||
-------------------------
|
||||
- Compressing speed and memory requirements for compressing were increased
|
||||
- LZMA now can use only these match finders: HC4, BT2, BT3, BT4
|
||||
|
||||
|
||||
4.32 2005-12-09
|
||||
-------------------------
|
||||
- Java version of LZMA SDK was included
|
||||
|
||||
|
||||
4.30 2005-11-20
|
||||
-------------------------
|
||||
- Compression ratio was improved in -a2 mode
|
||||
- Speed optimizations for compressing in -a2 mode
|
||||
- -fb switch now supports values up to 273
|
||||
- The bug in 7z_C (7zIn.c) was fixed:
|
||||
It used Alloc/Free functions from different memory pools.
|
||||
So if program used two memory pools, it worked incorrectly.
|
||||
- 7z_C: .7z format supporting was improved
|
||||
- LZMA# SDK (C#.NET version) was included
|
||||
|
||||
|
||||
4.27 (Updated) 2005-09-21
|
||||
-------------------------
|
||||
- Some GUIDs/interfaces in C++ were changed.
|
||||
IStream.h:
|
||||
ISequentialInStream::Read now works as old ReadPart
|
||||
ISequentialOutStream::Write now works as old WritePart
|
||||
|
||||
|
||||
4.27 2005-08-07
|
||||
-------------------------
|
||||
- The bug in LzmaDecodeSize.c was fixed:
|
||||
if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
|
||||
decompressing worked incorrectly.
|
||||
|
||||
|
||||
4.26 2005-08-05
|
||||
-------------------------
|
||||
- Fixes in 7z_C code and LzmaTest.c:
|
||||
previous versions could work incorrectly,
|
||||
if malloc(0) returns 0
|
||||
|
||||
|
||||
4.23 2005-06-29
|
||||
-------------------------
|
||||
- Small fixes in C++ code
|
||||
|
||||
|
||||
4.22 2005-06-10
|
||||
-------------------------
|
||||
- Small fixes
|
||||
|
||||
|
||||
4.21 2005-06-08
|
||||
-------------------------
|
||||
- Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
|
||||
- New additional version of ANSI-C LZMA Decoder with zlib-like interface:
|
||||
- LzmaStateDecode.h
|
||||
- LzmaStateDecode.c
|
||||
- LzmaStateTest.c
|
||||
- ANSI-C LZMA Decoder now can decompress files larger than 4 GB
|
||||
|
||||
|
||||
4.17 2005-04-18
|
||||
-------------------------
|
||||
- New example for RAM->RAM compressing/decompressing:
|
||||
LZMA + BCJ (filter for x86 code):
|
||||
- LzmaRam.h
|
||||
- LzmaRam.cpp
|
||||
- LzmaRamDecode.h
|
||||
- LzmaRamDecode.c
|
||||
- -f86 switch for lzma.exe
|
||||
|
||||
|
||||
4.16 2005-03-29
|
||||
-------------------------
|
||||
- The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder):
|
||||
If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
|
||||
decoder could access memory outside of allocated range.
|
||||
- Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
|
||||
Old version of LZMA Decoder now is in file LzmaDecodeSize.c.
|
||||
LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
|
||||
- Small speed optimization in LZMA C++ code
|
||||
- filter for SPARC's code was added
|
||||
- Simplified version of .7z ANSI-C Decoder was included
|
||||
|
||||
|
||||
4.06 2004-09-05
|
||||
-------------------------
|
||||
- The bug in v4.05 was fixed:
|
||||
LZMA-Encoder didn't release output stream in some cases.
|
||||
|
||||
|
||||
4.05 2004-08-25
|
||||
-------------------------
|
||||
- Source code of filters for x86, IA-64, ARM, ARM-Thumb
|
||||
and PowerPC code was included to SDK
|
||||
- Some internal minor changes
|
||||
|
||||
|
||||
4.04 2004-07-28
|
||||
-------------------------
|
||||
- More compatibility with some C++ compilers
|
||||
|
||||
|
||||
4.03 2004-06-18
|
||||
-------------------------
|
||||
- "Benchmark" command was added. It measures compressing
|
||||
and decompressing speed and shows rating values.
|
||||
Also it checks hardware errors.
|
||||
|
||||
|
||||
4.02 2004-06-10
|
||||
-------------------------
|
||||
- C++ LZMA Encoder/Decoder code now is more portable
|
||||
and it can be compiled by GCC on Linux.
|
||||
|
||||
|
||||
4.01 2004-02-15
|
||||
-------------------------
|
||||
- Some detection of data corruption was enabled.
|
||||
LzmaDecode.c / RangeDecoderReadByte
|
||||
.....
|
||||
{
|
||||
rd->ExtraBytes = 1;
|
||||
return 0xFF;
|
||||
}
|
||||
|
||||
|
||||
4.00 2004-02-13
|
||||
-------------------------
|
||||
- Original version of LZMA SDK
|
||||
|
||||
|
||||
|
||||
HISTORY of the LZMA
|
||||
-------------------
|
||||
2001-2008: Improvements to LZMA compressing/decompressing code,
|
||||
keeping compatibility with original LZMA format
|
||||
1996-2001: Development of LZMA compression format
|
||||
|
||||
Some milestones:
|
||||
|
||||
2001-08-30: LZMA compression was added to 7-Zip
|
||||
1999-01-02: First version of 7-Zip was released
|
||||
|
||||
|
||||
End of document
|
||||
HISTORY of the LZMA SDK
|
||||
-----------------------
|
||||
|
||||
4.63 2008-12-31
|
||||
-------------------------
|
||||
- Some minor fixes
|
||||
|
||||
|
||||
4.61 beta 2008-11-23
|
||||
-------------------------
|
||||
- The bug in ANSI-C LZMA Decoder was fixed:
|
||||
If encoded stream was corrupted, decoder could access memory
|
||||
outside of allocated range.
|
||||
- Some changes in ANSI-C 7z Decoder interfaces.
|
||||
- LZMA SDK is placed in the public domain.
|
||||
|
||||
|
||||
4.60 beta 2008-08-19
|
||||
-------------------------
|
||||
- Some minor fixes.
|
||||
|
||||
|
||||
4.59 beta 2008-08-13
|
||||
-------------------------
|
||||
- The bug was fixed:
|
||||
LZMA Encoder in fast compression mode could access memory outside of
|
||||
allocated range in some rare cases.
|
||||
|
||||
|
||||
4.58 beta 2008-05-05
|
||||
-------------------------
|
||||
- ANSI-C LZMA Decoder was rewritten for speed optimizations.
|
||||
- ANSI-C LZMA Encoder was included to LZMA SDK.
|
||||
- C++ LZMA code now is just wrapper over ANSI-C code.
|
||||
|
||||
|
||||
4.57 2007-12-12
|
||||
-------------------------
|
||||
- Speed optimizations in Ñ++ LZMA Decoder.
|
||||
- Small changes for more compatibility with some C/C++ compilers.
|
||||
|
||||
|
||||
4.49 beta 2007-07-05
|
||||
-------------------------
|
||||
- .7z ANSI-C Decoder:
|
||||
- now it supports BCJ and BCJ2 filters
|
||||
- now it supports files larger than 4 GB.
|
||||
- now it supports "Last Write Time" field for files.
|
||||
- C++ code for .7z archives compressing/decompressing from 7-zip
|
||||
was included to LZMA SDK.
|
||||
|
||||
|
||||
4.43 2006-06-04
|
||||
-------------------------
|
||||
- Small changes for more compatibility with some C/C++ compilers.
|
||||
|
||||
|
||||
4.42 2006-05-15
|
||||
-------------------------
|
||||
- Small changes in .h files in ANSI-C version.
|
||||
|
||||
|
||||
4.39 beta 2006-04-14
|
||||
-------------------------
|
||||
- The bug in versions 4.33b:4.38b was fixed:
|
||||
C++ version of LZMA encoder could not correctly compress
|
||||
files larger than 2 GB with HC4 match finder (-mfhc4).
|
||||
|
||||
|
||||
4.37 beta 2005-04-06
|
||||
-------------------------
|
||||
- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined.
|
||||
|
||||
|
||||
4.35 beta 2005-03-02
|
||||
-------------------------
|
||||
- The bug was fixed in C++ version of LZMA Decoder:
|
||||
If encoded stream was corrupted, decoder could access memory
|
||||
outside of allocated range.
|
||||
|
||||
|
||||
4.34 beta 2006-02-27
|
||||
-------------------------
|
||||
- Compressing speed and memory requirements for compressing were increased
|
||||
- LZMA now can use only these match finders: HC4, BT2, BT3, BT4
|
||||
|
||||
|
||||
4.32 2005-12-09
|
||||
-------------------------
|
||||
- Java version of LZMA SDK was included
|
||||
|
||||
|
||||
4.30 2005-11-20
|
||||
-------------------------
|
||||
- Compression ratio was improved in -a2 mode
|
||||
- Speed optimizations for compressing in -a2 mode
|
||||
- -fb switch now supports values up to 273
|
||||
- The bug in 7z_C (7zIn.c) was fixed:
|
||||
It used Alloc/Free functions from different memory pools.
|
||||
So if program used two memory pools, it worked incorrectly.
|
||||
- 7z_C: .7z format supporting was improved
|
||||
- LZMA# SDK (C#.NET version) was included
|
||||
|
||||
|
||||
4.27 (Updated) 2005-09-21
|
||||
-------------------------
|
||||
- Some GUIDs/interfaces in C++ were changed.
|
||||
IStream.h:
|
||||
ISequentialInStream::Read now works as old ReadPart
|
||||
ISequentialOutStream::Write now works as old WritePart
|
||||
|
||||
|
||||
4.27 2005-08-07
|
||||
-------------------------
|
||||
- The bug in LzmaDecodeSize.c was fixed:
|
||||
if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
|
||||
decompressing worked incorrectly.
|
||||
|
||||
|
||||
4.26 2005-08-05
|
||||
-------------------------
|
||||
- Fixes in 7z_C code and LzmaTest.c:
|
||||
previous versions could work incorrectly,
|
||||
if malloc(0) returns 0
|
||||
|
||||
|
||||
4.23 2005-06-29
|
||||
-------------------------
|
||||
- Small fixes in C++ code
|
||||
|
||||
|
||||
4.22 2005-06-10
|
||||
-------------------------
|
||||
- Small fixes
|
||||
|
||||
|
||||
4.21 2005-06-08
|
||||
-------------------------
|
||||
- Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
|
||||
- New additional version of ANSI-C LZMA Decoder with zlib-like interface:
|
||||
- LzmaStateDecode.h
|
||||
- LzmaStateDecode.c
|
||||
- LzmaStateTest.c
|
||||
- ANSI-C LZMA Decoder now can decompress files larger than 4 GB
|
||||
|
||||
|
||||
4.17 2005-04-18
|
||||
-------------------------
|
||||
- New example for RAM->RAM compressing/decompressing:
|
||||
LZMA + BCJ (filter for x86 code):
|
||||
- LzmaRam.h
|
||||
- LzmaRam.cpp
|
||||
- LzmaRamDecode.h
|
||||
- LzmaRamDecode.c
|
||||
- -f86 switch for lzma.exe
|
||||
|
||||
|
||||
4.16 2005-03-29
|
||||
-------------------------
|
||||
- The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder):
|
||||
If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
|
||||
decoder could access memory outside of allocated range.
|
||||
- Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
|
||||
Old version of LZMA Decoder now is in file LzmaDecodeSize.c.
|
||||
LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
|
||||
- Small speed optimization in LZMA C++ code
|
||||
- filter for SPARC's code was added
|
||||
- Simplified version of .7z ANSI-C Decoder was included
|
||||
|
||||
|
||||
4.06 2004-09-05
|
||||
-------------------------
|
||||
- The bug in v4.05 was fixed:
|
||||
LZMA-Encoder didn't release output stream in some cases.
|
||||
|
||||
|
||||
4.05 2004-08-25
|
||||
-------------------------
|
||||
- Source code of filters for x86, IA-64, ARM, ARM-Thumb
|
||||
and PowerPC code was included to SDK
|
||||
- Some internal minor changes
|
||||
|
||||
|
||||
4.04 2004-07-28
|
||||
-------------------------
|
||||
- More compatibility with some C++ compilers
|
||||
|
||||
|
||||
4.03 2004-06-18
|
||||
-------------------------
|
||||
- "Benchmark" command was added. It measures compressing
|
||||
and decompressing speed and shows rating values.
|
||||
Also it checks hardware errors.
|
||||
|
||||
|
||||
4.02 2004-06-10
|
||||
-------------------------
|
||||
- C++ LZMA Encoder/Decoder code now is more portable
|
||||
and it can be compiled by GCC on Linux.
|
||||
|
||||
|
||||
4.01 2004-02-15
|
||||
-------------------------
|
||||
- Some detection of data corruption was enabled.
|
||||
LzmaDecode.c / RangeDecoderReadByte
|
||||
.....
|
||||
{
|
||||
rd->ExtraBytes = 1;
|
||||
return 0xFF;
|
||||
}
|
||||
|
||||
|
||||
4.00 2004-02-13
|
||||
-------------------------
|
||||
- Original version of LZMA SDK
|
||||
|
||||
|
||||
|
||||
HISTORY of the LZMA
|
||||
-------------------
|
||||
2001-2008: Improvements to LZMA compressing/decompressing code,
|
||||
keeping compatibility with original LZMA format
|
||||
1996-2001: Development of LZMA compression format
|
||||
|
||||
Some milestones:
|
||||
|
||||
2001-08-30: LZMA compression was added to 7-Zip
|
||||
1999-01-02: First version of 7-Zip was released
|
||||
|
||||
|
||||
End of document
|
||||
|
|
|
|||
Loading…
Reference in a new issue