11b108b8bSchristos#------------------------------------------------------------------------------ 2*4c89978fSchristos# $File: compress,v 1.83 2022/08/16 11:16:39 christos Exp $ 31b108b8bSchristos# compress: file(1) magic for pure-compression formats (no archives) 41b108b8bSchristos# 51b108b8bSchristos# compress, gzip, pack, compact, huf, squeeze, crunch, freeze, yabba, etc. 61b108b8bSchristos# 71b108b8bSchristos# Formats for various forms of compressed data 81b108b8bSchristos# Formats for "compress" proper have been moved into "compress.c", 91b108b8bSchristos# because it tries to uncompress it to figure out what's inside. 101b108b8bSchristos 111b108b8bSchristos# standard unix compress 121b108b8bSchristos0 string \037\235 compress'd data 131b108b8bSchristos!:mime application/x-compress 141b108b8bSchristos!:apple LZIVZIVU 151b108b8bSchristos>2 byte&0x80 >0 block compressed 161b108b8bSchristos>2 byte&0x1f x %d bits 171b108b8bSchristos 181b108b8bSchristos# gzip (GNU zip, not to be confused with Info-ZIP or PKWARE zip archiver) 19c3ff5af2Schristos# URL: https://en.wikipedia.org/wiki/Gzip 20c3ff5af2Schristos# Reference: https://tools.ietf.org/html/rfc1952 21c3ff5af2Schristos# Update: Joerg Jenderek, Apr 2019 221b108b8bSchristos# Edited by Chris Chittleborough <cchittleborough@yahoo.com.au>, March 2002 231b108b8bSchristos# * Original filename is only at offset 10 if "extra field" absent 241b108b8bSchristos# * Produce shorter output - notably, only report compression methods 251b108b8bSchristos# other than 8 ("deflate", the only method defined in RFC 1952). 26c3ff5af2Schristos# Note: find defs -iname '*.trid.xml' -exec grep -q '<Bytes>1F8B08' {} \; -ls 27c3ff5af2Schristos# TODO: 28c3ff5af2Schristos# FBR Blueberry FlashBack screen Record https://www.flashbackrecorder.com/ 29c3ff5af2Schristos# KPR KOffice/Calligra KPresenter application/x-kpresenter 30c3ff5af2Schristos# KPT KOffice/Calligra KPresenter template? application/x-kpresenter 31c3ff5af2Schristos# SAV Diggles Saved Game File http://www.innonics.com 32c3ff5af2Schristos# SAV FarCry (demo) saved game http://www.farcry-thegame.com 33c3ff5af2Schristos# DAT ZOAGZIP game data format http://en.wikipedia.org/wiki/SD_Gundam_Capsule_Fighter 34c3ff5af2Schristos0 string \037\213 35c3ff5af2Schristos# to display gzip compressed (strength=100=2*50) before other (strength=50)? 36c3ff5af2Schristos#!:strength * 2 37c3ff5af2Schristos# no FNAME and FCOMMENT bit implies no file name/comment. That means only binary 38c3ff5af2Schristos>3 byte&0x18 =0 39c3ff5af2Schristos# For binary gzipped no ASCII text should occur 40c3ff5af2Schristos# mcd-monu-cad.trid.xml 41c3ff5af2Schristos>>10 string MCD Monu-Cad Drawing, Component or Font 42c3ff5af2Schristos#>>36 string Created\ with\ MONU-CAD 43c3ff5af2Schristos#!:mime application/octet-stream 44c3ff5af2Schristos# http://fileformats.archiveteam.org/wiki/Monu-CAD 45c3ff5af2Schristos# http://www.monucad.com/downloads/FullDemo-2005.EXE 46c3ff5af2Schristos# /HANDS96.MCC Component 47c3ff5af2Schristos# /DEMO_DD01.MCD Drawing 48c3ff5af2Schristos# /MCALF020.FNT Font 49c3ff5af2Schristos!:ext mcc/mcd/fnt 50c3ff5af2Schristos# http://www.generalcadd.com 51c3ff5af2Schristos>>10 string GXD General CADD, Drawing or Component 52c3ff5af2Schristos#!:mime application/octet-stream 53c3ff5af2Schristos# /gxc/BUILDINGEDGE.gxc Component 54c3ff5af2Schristos# /gxd/HOCKETT-STPAUL-WRHSE.gxd Drawing 55c3ff5af2Schristos# /gxd/POWERLAND-MILL-ADD-11.gxd Drawing v9.1.06 56c3ff5af2Schristos!:ext gxc/gxd 57c3ff5af2Schristos#>>>13 ubyte 0 \b, version 0 58c3ff5af2Schristos>>>13 string 09 \b, version 9 59c3ff5af2Schristos# other gzipped binary like gzipped tar, VirtualBox extension package,... 60c3ff5af2Schristos>>10 default x gzip compressed data 610086c5a6Schristos!:mime application/gzip 62c3ff5af2Schristos>>>0 use gzip-info 63c3ff5af2Schristos# size of the original (uncompressed) input data modulo 2^32 64cdf4124cSchristos>>-0 offset >48 65c3ff5af2Schristos>>>-4 ulelong x \b, original size modulo 2^32 %u 66cdf4124cSchristos>>-0 offset <48 \b, truncated 67c3ff5af2Schristos# gzipped TAR or VirtualBox extension package 68c3ff5af2Schristos#!:mime application/x-compressed-tar 69c3ff5af2Schristos#!:mime application/x-virtualbox-vbox-extpack 70c3ff5af2Schristos# https://www.w3.org/TR/SVG/mimereg.html 71c3ff5af2Schristos#!:mime image/image/svg+xml-compressed 72c3ff5af2Schristos# zlib.3.gz 73c3ff5af2Schristos# microcode-20180312.tgz 74c3ff5af2Schristos# tpz same as tgz 75c3ff5af2Schristos# lua-md5_1.2-1_i386_i486.ipk https://en.wikipedia.org/wiki/Opkg 76c3ff5af2Schristos# Oracle_VM_VirtualBox_Extension_Pack-5.0.12-104815.vbox-extpack 77c3ff5af2Schristos!:ext gz/tgz/tpz/ipk/vbox-extpack/svgz 78c3ff5af2Schristos# FNAME/FCOMMENT bit implies file name/comment as iso-8859-1 text 79c3ff5af2Schristos>3 byte&0x18 >0 gzip compressed data 80c3ff5af2Schristos!:mime application/gzip 81c3ff5af2Schristos# gzipped tar, gzipped Abiword document 82c3ff5af2Schristos#!:mime application/x-compressed-tar 83c3ff5af2Schristos#!:mime application/x-abiword-compressed 84c3ff5af2Schristos#!:mime image/image/svg+xml-compressed 85c3ff5af2Schristos# kleopatra_splashscreen.svgz gzipped .svg 86c3ff5af2Schristos!:ext gz/tgz/tpz/zabw/svgz 87c3ff5af2Schristos>>0 use gzip-info 88c3ff5af2Schristos# size of the original (uncompressed) input data modulo 2^32 89cdf4124cSchristos>>-0 offset >48 90cdf4124cSchristos>>>-4 ulelong x \b, original size modulo 2^32 %u 91cdf4124cSchristos>>-0 offset <48 \b, truncated 92c3ff5af2Schristos# display information of gzip compressed files 93c3ff5af2Schristos0 name gzip-info 94c3ff5af2Schristos#>2 byte x THIS iS GZIP 951b108b8bSchristos>2 byte <8 \b, reserved method 961b108b8bSchristos>2 byte >8 \b, unknown method 971b108b8bSchristos>3 byte &0x01 \b, ASCII 981b108b8bSchristos>3 byte &0x02 \b, has CRC 991b108b8bSchristos>3 byte &0x04 \b, extra field 1001b108b8bSchristos>3 byte&0xC =0x08 1011b108b8bSchristos>>10 string x \b, was "%s" 1021b108b8bSchristos>3 byte &0x10 \b, has comment 103f5d2d52dSchristos>3 byte &0x20 \b, encrypted 104f5d2d52dSchristos>4 ledate >0 \b, last modified: %s 105f5d2d52dSchristos>8 byte 2 \b, max compression 106f5d2d52dSchristos>8 byte 4 \b, max speed 1071b108b8bSchristos>9 byte =0x00 \b, from FAT filesystem (MS-DOS, OS/2, NT) 1081b108b8bSchristos>9 byte =0x01 \b, from Amiga 1091b108b8bSchristos>9 byte =0x02 \b, from VMS 1101b108b8bSchristos>9 byte =0x03 \b, from Unix 1111b108b8bSchristos>9 byte =0x04 \b, from VM/CMS 1121b108b8bSchristos>9 byte =0x05 \b, from Atari 1131b108b8bSchristos>9 byte =0x06 \b, from HPFS filesystem (OS/2, NT) 1141b108b8bSchristos>9 byte =0x07 \b, from MacOS 1151b108b8bSchristos>9 byte =0x08 \b, from Z-System 1161b108b8bSchristos>9 byte =0x09 \b, from CP/M 1171b108b8bSchristos>9 byte =0x0A \b, from TOPS/20 1181b108b8bSchristos>9 byte =0x0B \b, from NTFS filesystem (NT) 1191b108b8bSchristos>9 byte =0x0C \b, from QDOS 1201b108b8bSchristos>9 byte =0x0D \b, from Acorn RISCOS 121c3ff5af2Schristos# size of the original (uncompressed) input data modulo 2^32 122c3ff5af2Schristos#>-4 ulelong x \b, original size modulo 2^32 %u 123c3ff5af2Schristos#ERROR: line 114: non zero offset 1048572 at level 1 1241b108b8bSchristos 1251b108b8bSchristos# packed data, Huffman (minimum redundancy) codes on a byte-by-byte basis 1261b108b8bSchristos0 string \037\036 packed data 1271b108b8bSchristos!:mime application/octet-stream 1281b108b8bSchristos>2 belong >1 \b, %d characters originally 1291b108b8bSchristos>2 belong =1 \b, %d character originally 1301b108b8bSchristos# 1311b108b8bSchristos# This magic number is byte-order-independent. 1321b108b8bSchristos0 short 0x1f1f old packed data 1331b108b8bSchristos!:mime application/octet-stream 1341b108b8bSchristos 1351b108b8bSchristos# XXX - why *two* entries for "compacted data", one of which is 1361b108b8bSchristos# byte-order independent, and one of which is byte-order dependent? 1371b108b8bSchristos# 1381b108b8bSchristos0 short 0x1fff compacted data 1391b108b8bSchristos!:mime application/octet-stream 1401b108b8bSchristos# This string is valid for SunOS (BE) and a matching "short" is listed 1411b108b8bSchristos# in the Ultrix (LE) magic file. 1421b108b8bSchristos0 string \377\037 compacted data 1431b108b8bSchristos!:mime application/octet-stream 1441b108b8bSchristos0 short 0145405 huf output 1451b108b8bSchristos!:mime application/octet-stream 1461b108b8bSchristos 1471b108b8bSchristos# bzip2 1481b108b8bSchristos0 string BZh bzip2 compressed data 1491b108b8bSchristos!:mime application/x-bzip2 150*4c89978fSchristos!:ext bz2 1511b108b8bSchristos>3 byte >47 \b, block size = %c00k 1521b108b8bSchristos 15399449224Schristos# bzip a block-sorting file compressor 15499449224Schristos# by Julian Seward <sewardj@cs.man.ac.uk> and others 15599449224Schristos0 string BZ0 bzip compressed data 15699449224Schristos!:mime application/x-bzip 15799449224Schristos>3 byte >47 \b, block size = %c00k 15899449224Schristos 1591b108b8bSchristos# lzip 1601b108b8bSchristos0 string LZIP lzip compressed data 1611b108b8bSchristos!:mime application/x-lzip 1621b108b8bSchristos>4 byte x \b, version: %d 1631b108b8bSchristos 1641b108b8bSchristos# squeeze and crunch 1651b108b8bSchristos# Michael Haardt <michael@cantor.informatik.rwth-aachen.de> 1661b108b8bSchristos0 beshort 0x76FF squeezed data, 1671b108b8bSchristos>4 string x original name %s 1681b108b8bSchristos0 beshort 0x76FE crunched data, 1691b108b8bSchristos>2 string x original name %s 1701b108b8bSchristos0 beshort 0x76FD LZH compressed data, 1711b108b8bSchristos>2 string x original name %s 1721b108b8bSchristos 1731b108b8bSchristos# Freeze 1741b108b8bSchristos0 string \037\237 frozen file 2.1 1751b108b8bSchristos0 string \037\236 frozen file 1.0 (or gzip 0.5) 1761b108b8bSchristos 1771b108b8bSchristos# SCO compress -H (LZH) 1781b108b8bSchristos0 string \037\240 SCO compress -H (LZH) data 1791b108b8bSchristos 1801b108b8bSchristos# European GSM 06.10 is a provisional standard for full-rate speech 1811b108b8bSchristos# transcoding, prI-ETS 300 036, which uses RPE/LTP (residual pulse 1821b108b8bSchristos# excitation/long term prediction) coding at 13 kbit/s. 1831b108b8bSchristos# 1841b108b8bSchristos# There's only a magic nibble (4 bits); that nibble repeats every 33 1851b108b8bSchristos# bytes. This isn't suited for use, but maybe we can use it someday. 1861b108b8bSchristos# 1871b108b8bSchristos# This will cause very short GSM files to be declared as data and 1881b108b8bSchristos# mismatches to be declared as data too! 1891b108b8bSchristos#0 byte&0xF0 0xd0 data 1901b108b8bSchristos#>33 byte&0xF0 0xd0 1911b108b8bSchristos#>66 byte&0xF0 0xd0 1921b108b8bSchristos#>99 byte&0xF0 0xd0 1931b108b8bSchristos#>132 byte&0xF0 0xd0 GSM 06.10 compressed audio 1941b108b8bSchristos 1951b108b8bSchristos# lzop from <markus.oberhumer@jk.uni-linz.ac.at> 1961b108b8bSchristos0 string \x89\x4c\x5a\x4f\x00\x0d\x0a\x1a\x0a lzop compressed data 1971b108b8bSchristos>9 beshort <0x0940 1981b108b8bSchristos>>9 byte&0xf0 =0x00 - version 0. 1991b108b8bSchristos>>9 beshort&0x0fff x \b%03x, 2001b108b8bSchristos>>13 byte 1 LZO1X-1, 2011b108b8bSchristos>>13 byte 2 LZO1X-1(15), 2021b108b8bSchristos>>13 byte 3 LZO1X-999, 2031b108b8bSchristos## >>22 bedate >0 last modified: %s, 2041b108b8bSchristos>>14 byte =0x00 os: MS-DOS 2051b108b8bSchristos>>14 byte =0x01 os: Amiga 2061b108b8bSchristos>>14 byte =0x02 os: VMS 2071b108b8bSchristos>>14 byte =0x03 os: Unix 2081b108b8bSchristos>>14 byte =0x05 os: Atari 2091b108b8bSchristos>>14 byte =0x06 os: OS/2 2101b108b8bSchristos>>14 byte =0x07 os: MacOS 2111b108b8bSchristos>>14 byte =0x0A os: Tops/20 2121b108b8bSchristos>>14 byte =0x0B os: WinNT 2131b108b8bSchristos>>14 byte =0x0E os: Win32 2141b108b8bSchristos>9 beshort >0x0939 2151b108b8bSchristos>>9 byte&0xf0 =0x00 - version 0. 2161b108b8bSchristos>>9 byte&0xf0 =0x10 - version 1. 2171b108b8bSchristos>>9 byte&0xf0 =0x20 - version 2. 2181b108b8bSchristos>>9 beshort&0x0fff x \b%03x, 2191b108b8bSchristos>>15 byte 1 LZO1X-1, 2201b108b8bSchristos>>15 byte 2 LZO1X-1(15), 2211b108b8bSchristos>>15 byte 3 LZO1X-999, 2221b108b8bSchristos## >>25 bedate >0 last modified: %s, 2231b108b8bSchristos>>17 byte =0x00 os: MS-DOS 2241b108b8bSchristos>>17 byte =0x01 os: Amiga 2251b108b8bSchristos>>17 byte =0x02 os: VMS 2261b108b8bSchristos>>17 byte =0x03 os: Unix 2271b108b8bSchristos>>17 byte =0x05 os: Atari 2281b108b8bSchristos>>17 byte =0x06 os: OS/2 2291b108b8bSchristos>>17 byte =0x07 os: MacOS 2301b108b8bSchristos>>17 byte =0x0A os: Tops/20 2311b108b8bSchristos>>17 byte =0x0B os: WinNT 2321b108b8bSchristos>>17 byte =0x0E os: Win32 2331b108b8bSchristos 2341b108b8bSchristos# 4.3BSD-Quasijarus Strong Compression 235c3ff5af2Schristos# https://minnie.tuhs.org/Quasijarus/compress.html 2361b108b8bSchristos0 string \037\241 Quasijarus strong compressed data 2371b108b8bSchristos 2381b108b8bSchristos# From: Cory Dikkers <cdikkers@swbell.net> 2391b108b8bSchristos0 string XPKF Amiga xpkf.library compressed data 2401b108b8bSchristos0 string PP11 Power Packer 1.1 compressed data 2411b108b8bSchristos0 string PP20 Power Packer 2.0 compressed data, 2421b108b8bSchristos>4 belong 0x09090909 fast compression 2431b108b8bSchristos>4 belong 0x090A0A0A mediocre compression 2441b108b8bSchristos>4 belong 0x090A0B0B good compression 2451b108b8bSchristos>4 belong 0x090A0C0C very good compression 2461b108b8bSchristos>4 belong 0x090A0C0D best compression 2471b108b8bSchristos 2481b108b8bSchristos# 7-zip archiver, from Thomas Klausner (wiz@danbala.tuwien.ac.at) 249c3ff5af2Schristos# https://www.7-zip.org or DOC/7zFormat.txt 2501b108b8bSchristos# 2511b108b8bSchristos0 string 7z\274\257\047\034 7-zip archive data, 2521b108b8bSchristos>6 byte x version %d 2531b108b8bSchristos>7 byte x \b.%d 2542e1c341aSchristos!:mime application/x-7z-compressed 255b04dc002Schristos!:ext 7z/cb7 2561b108b8bSchristos 2571b108b8bSchristos# Type: LZMA 2582c8c7e75Schristos0 lelong&0xffffff =0x5d 2599b792cf3Schristos>12 leshort 0xff LZMA compressed data, 260f5d2d52dSchristos!:mime application/x-lzma 2612c8c7e75Schristos>>5 lequad =0xffffffffffffffff streamed 2622c8c7e75Schristos>>5 lequad !0xffffffffffffffff non-streamed, size %lld 2639b792cf3Schristos>12 leshort 0 LZMA compressed data, 2649b792cf3Schristos>>5 lequad =0xffffffffffffffff streamed 2659b792cf3Schristos>>5 lequad !0xffffffffffffffff non-streamed, size %lld 2661b108b8bSchristos 2671b108b8bSchristos# http://tukaani.org/xz/xz-file-format.txt 2686449c992Schristos0 ustring \xFD7zXZ\x00 XZ compressed data, checksum 269*4c89978fSchristos!:strength * 2 270*4c89978fSchristos!:mime application/x-xz 2716449c992Schristos>7 byte&0xf 0x0 NONE 2726449c992Schristos>7 byte&0xf 0x1 CRC32 2736449c992Schristos>7 byte&0xf 0x4 CRC64 2746449c992Schristos>7 byte&0xf 0xa SHA-256 2756449c992Schristos 2762e1c341aSchristos# https://github.com/ckolivas/lrzip/blob/master/doc/magic.header.txt 2772e1c341aSchristos0 string LRZI LRZIP compressed data 2782e1c341aSchristos>4 byte x - version %d 2792e1c341aSchristos>5 byte x \b.%d 280*4c89978fSchristos>22 byte 1 \b, encrypted 2812e1c341aSchristos!:mime application/x-lrzip 2822e1c341aSchristos 283c3ff5af2Schristos# https://fastcompression.blogspot.fi/2013/04/lz4-streaming-format-final.html 284f5d2d52dSchristos0 lelong 0x184d2204 LZ4 compressed data (v1.4+) 285f5d2d52dSchristos!:mime application/x-lz4 286f5d2d52dSchristos# Added by osm0sis@xda-developers.com 287f5d2d52dSchristos0 lelong 0x184c2103 LZ4 compressed data (v1.0-v1.3) 288f5d2d52dSchristos!:mime application/x-lz4 289f5d2d52dSchristos0 lelong 0x184c2102 LZ4 compressed data (v0.1-v0.9) 290f5d2d52dSchristos!:mime application/x-lz4 291f5d2d52dSchristos 292b04dc002Schristos# Zstandard/LZ4 skippable frames 293b04dc002Schristos# https://github.com/facebook/zstd/blob/dev/zstd_compression_format.md 294b04dc002Schristos0 lelong&0xFFFFFFF0 0x184D2A50 29555287a1bSchristos>(4.l+8) indirect x 296b04dc002Schristos 297b04dc002Schristos# Zstandard Dictionary ID subroutine 298b04dc002Schristos0 name zstd-dictionary-id 299b04dc002Schristos# Single Segment = True 300b04dc002Schristos>0 byte &0x20 \b, Dictionary ID: 301b04dc002Schristos>>0 byte&0x03 0 None 302b04dc002Schristos>>0 byte&0x03 1 303b04dc002Schristos>>>1 byte x %u 304b04dc002Schristos>>0 byte&0x03 2 305b04dc002Schristos>>>1 leshort x %u 306b04dc002Schristos>>0 byte&0x03 3 307b04dc002Schristos>>>1 lelong x %u 308b04dc002Schristos# Single Segment = False 309b04dc002Schristos>0 byte ^0x20 \b, Dictionary ID: 310b04dc002Schristos>>0 byte&0x03 0 None 311b04dc002Schristos>>0 byte&0x03 1 312b04dc002Schristos>>>2 byte x %u 313b04dc002Schristos>>0 byte&0x03 2 314b04dc002Schristos>>>2 leshort x %u 315b04dc002Schristos>>0 byte&0x03 3 316b04dc002Schristos>>>2 lelong x %u 317b04dc002Schristos 318b04dc002Schristos# Zstandard compressed data 319b04dc002Schristos# https://github.com/facebook/zstd/blob/dev/zstd_compression_format.md 320b04dc002Schristos0 lelong 0xFD2FB522 Zstandard compressed data (v0.2) 3210086c5a6Schristos!:mime application/zstd 322b04dc002Schristos0 lelong 0xFD2FB523 Zstandard compressed data (v0.3) 3230086c5a6Schristos!:mime application/zstd 324b04dc002Schristos0 lelong 0xFD2FB524 Zstandard compressed data (v0.4) 3250086c5a6Schristos!:mime application/zstd 326b04dc002Schristos0 lelong 0xFD2FB525 Zstandard compressed data (v0.5) 3270086c5a6Schristos!:mime application/zstd 328b04dc002Schristos0 lelong 0xFD2FB526 Zstandard compressed data (v0.6) 3290086c5a6Schristos!:mime application/zstd 330b04dc002Schristos0 lelong 0xFD2FB527 Zstandard compressed data (v0.7) 3310086c5a6Schristos!:mime application/zstd 332b04dc002Schristos>4 use zstd-dictionary-id 333b04dc002Schristos0 lelong 0xFD2FB528 Zstandard compressed data (v0.8+) 3340086c5a6Schristos!:mime application/zstd 335b04dc002Schristos>4 use zstd-dictionary-id 336b04dc002Schristos 337b04dc002Schristos# https://github.com/facebook/zstd/blob/dev/zstd_compression_format.md 338b04dc002Schristos0 lelong 0xEC30A437 Zstandard dictionary 3390086c5a6Schristos!:mime application/x-std-dictionary 340b04dc002Schristos>4 lelong x (ID %u) 341b04dc002Schristos 3421b108b8bSchristos# AFX compressed files (Wolfram Kleff) 3431b108b8bSchristos2 string -afx- AFX compressed file data 3441b108b8bSchristos 3451b108b8bSchristos# Supplementary magic data for the file(1) command to support 3461b108b8bSchristos# rzip(1). The format is described in magic(5). 3471b108b8bSchristos# 3481b108b8bSchristos# Copyright (C) 2003 by Andrew Tridgell. You may do whatever you want with 3491b108b8bSchristos# this file. 3501b108b8bSchristos# 3511b108b8bSchristos0 string RZIP rzip compressed data 3521b108b8bSchristos>4 byte x - version %d 3531b108b8bSchristos>5 byte x \b.%d 3541b108b8bSchristos>6 belong x (%d bytes) 3551b108b8bSchristos 3562e1c341aSchristos0 string ArC\x01 FreeArc archive <http://freearc.org> 3572e1c341aSchristos 3582e1c341aSchristos# Type: DACT compressed files 3592e1c341aSchristos0 long 0x444354C3 DACT compressed data 3602e1c341aSchristos>4 byte >-1 (version %i. 3612e1c341aSchristos>5 byte >-1 %i. 3622e1c341aSchristos>6 byte >-1 %i) 3632e1c341aSchristos>7 long >0 , original size: %i bytes 3642e1c341aSchristos>15 long >30 , block size: %i bytes 3659b792cf3Schristos 3669b792cf3Schristos# Valve Pack (VPK) files 3679b792cf3Schristos0 lelong 0x55aa1234 Valve Pak file 3689b792cf3Schristos>0x4 lelong x \b, version %u 3699b792cf3Schristos>0x8 lelong x \b, %u entries 3709b792cf3Schristos 371f5d2d52dSchristos# Snappy framing format 372c3ff5af2Schristos# https://code.google.com/p/snappy/source/browse/trunk/framing_format.txt 373f5d2d52dSchristos0 string \377\006\0\0sNaPpY snappy framed data 374f5d2d52dSchristos!:mime application/x-snappy-framed 37585dc3c67Schristos 376c3ff5af2Schristos# qpress, https://www.quicklz.com/ 37785dc3c67Schristos0 string qpress10 qpress compressed data 37885dc3c67Schristos!:mime application/x-qpress 37985dc3c67Schristos 38085dc3c67Schristos# Zlib https://www.ietf.org/rfc/rfc6713.txt 381b04dc002Schristos0 string/b x 382b04dc002Schristos>0 beshort%31 =0 383b04dc002Schristos>>0 byte&0xf =8 384b04dc002Schristos>>>0 byte&0x80 =0 zlib compressed data 38585dc3c67Schristos!:mime application/zlib 38699449224Schristos 38799449224Schristos# BWC compression 38899449224Schristos0 string BWC 38999449224Schristos>3 byte 0 BWC compressed data 39099449224Schristos 39199449224Schristos# UCL compression 39299449224Schristos0 bequad 0x00e955434cff011a UCL compressed data 39399449224Schristos 39499449224Schristos# Softlib archive 39599449224Schristos0 string SLIB Softlib archive 39699449224Schristos>4 leshort x \b, version %d 39799449224Schristos>6 leshort x (contains %d files) 39899449224Schristos 39999449224Schristos# URL: https://github.com/lzfse/lzfse/blob/master/src/lzfse_internal.h#L276 40099449224Schristos# From: Eric Hall <eric.hall@darkart.com> 40199449224Schristos0 string bvx- lzfse encoded, no compression 40299449224Schristos0 string bvx1 lzfse compressed, uncompressed tables 40399449224Schristos0 string bvx2 lzfse compressed, compressed tables 40499449224Schristos0 string bvxn lzfse encoded, lzvn compressed 405cdf4124cSchristos 406cdf4124cSchristos# pcxLib.exe compression program 407cdf4124cSchristos# http://www.shikadi.net/moddingwiki/PCX_Library 408cdf4124cSchristos0 string/b pcxLib 409cdf4124cSchristos>0x0A string/b Copyright\020(c)\020Genus\020Microprogramming,\020Inc. pcxLib compressed 410