Virgin import of FILE 3.32

1 files changed, 146 insertions, 0 deletions

diff --git a/contrib/file/Magdir/compress b/contrib/file/Magdir/compress
new file mode 100644
index 0000000..f4fe4a4
--- /dev/null
+++ b/contrib/file/Magdir/compress
@@ -0,0 +1,146 @@
+
+#------------------------------------------------------------------------------
+# compress:  file(1) magic for pure-compression formats (no archives)
+#
+# compress, gzip, pack, compact, huf, squeeze, crunch, freeze, yabba, etc.
+#
+# Formats for various forms of compressed data
+# Formats for "compress" proper have been moved into "compress.c",
+# because it tries to uncompress it to figure out what's inside.
+
+# standard unix compress
+0	string		\037\235	compress'd data
+>2	byte&0x80	>0		block compressed
+>2	byte&0x1f	x		%d bits
+
+# gzip (GNU zip, not to be confused with Info-ZIP or PKWARE zip archiver)
+0       string          \037\213        gzip compressed data
+>2      byte            <8              \b, reserved method,
+>2      byte            8               \b, deflated,
+>3	byte		&0x01		ASCII,
+>3	byte		&0x02		continuation,
+>3	byte		&0x04		extra field,
+>3	byte		&0x08		original filename,
+>>10    string          x               `%s',
+>3	byte		&0x10		comment,
+>3	byte		&0x20		encrypted,
+>4	ledate		x		last modified: %s,
+>8	byte		2		max compression,
+>8	byte		4		max speed,
+>9	byte		=0x00		os: MS-DOS
+>9	byte		=0x01		os: Amiga
+>9	byte		=0x02		os: VMS
+>9	byte		=0x03		os: Unix
+>9	byte		=0x05		os: Atari
+>9	byte		=0x06		os: OS/2
+>9	byte		=0x07		os: MacOS
+>9	byte		=0x0A		os: Tops/20
+>9	byte		=0x0B		os: Win/32
+
+# packed data, Huffman (minimum redundancy) codes on a byte-by-byte basis
+0	string		\037\036	packed data
+>2	belong		>1		\b, %d characters originally
+>2	belong		=1		\b, %d character originally
+#
+# This magic number is byte-order-independent.  XXX - Does that mean this
+# is big-endian, little-endian, either, or that you can't tell?
+# this short is valid for SunOS
+0	short		017437		old packed data
+
+# XXX - why *two* entries for "compacted data", one of which is
+# byte-order independent, and one of which is byte-order dependent?
+#
+0	short		0x1fff		compacted data
+# This string is valid for SunOS (BE) and a matching "short" is listed
+# in the Ultrix (LE) magic file.
+0	string		\377\037	compacted data
+0	short		0145405		huf output
+
+# bzip2
+0	string		BZh		bzip2 compressed data
+>3	byte		>47		\b, block size = %c00k
+
+# squeeze and crunch
+# Michael Haardt <michael@cantor.informatik.rwth-aachen.de>
+0	beshort		0x76FF		squeezed data,
+>4	string		x		original name %s
+0	beshort		0x76FE		crunched data,
+>2	string		x		original name %s
+0	beshort		0x76FD		LZH compressed data,
+>2	string		x		original name %s
+
+# Freeze
+0	string		\037\237	frozen file 2.1
+0	string		\037\236	frozen file 1.0 (or gzip 0.5)
+
+# SCO compress -H (LZH)
+0	string		\037\240	SCO compress -H (LZH) data
+
+# European GSM 06.10 is a provisional standard for full-rate speech
+# transcoding, prI-ETS 300 036, which uses RPE/LTP (residual pulse
+# excitation/long term prediction) coding at 13 kbit/s.
+#
+# There's only a magic nibble (4 bits); that nibble repeats every 33
+# bytes.  This isn't suited for use, but maybe we can use it someday.
+#
+# This will cause very short GSM files to be declared as data and
+# mismatches to be declared as data too!
+#0	byte&0xF0	0xd0		data
+#>33	byte&0xF0	0xd0
+#>66	byte&0xF0	0xd0
+#>99	byte&0xF0	0xd0
+#>132	byte&0xF0	0xd0		GSM 06.10 compressed audio
+
+# bzip	a block-sorting file compressor
+#	by Julian Seward <sewardj@cs.man.ac.uk> and others
+#
+0	string		BZ		bzip compressed data
+>2	byte		x		\b, version: %c
+>3	string		=1		\b, compression block size 100k
+>3	string		=2		\b, compression block size 200k
+>3	string		=3		\b, compression block size 300k
+>3	string		=4		\b, compression block size 400k
+>3	string		=5		\b, compression block size 500k
+>3	string		=6		\b, compression block size 600k
+>3	string		=7		\b, compression block size 700k
+>3	string		=8		\b, compression block size 800k
+>3	string		=9		\b, compression block size 900k
+
+# lzop from <markus.oberhumer@jk.uni-linz.ac.at>
+0	string		\x89\x4c\x5a\x4f\x00\x0d\x0a\x1a\x0a	lzop compressed data
+>9	beshort		<0x0940
+>>9	byte&0xf0	=0x00		- version 0.
+>>9	beshort&0x0fff	x		\b%03x,
+>>13	byte		1		LZO1X-1,
+>>13	byte		2		LZO1X-1(15),
+>>13	byte		3		LZO1X-999,
+## >>22	bedate		>0		last modified: %s,
+>>14	byte		=0x00		os: MS-DOS
+>>14	byte		=0x01		os: Amiga
+>>14	byte		=0x02		os: VMS
+>>14	byte		=0x03		os: Unix
+>>14	byte		=0x05		os: Atari
+>>14	byte		=0x06		os: OS/2
+>>14	byte		=0x07		os: MacOS
+>>14	byte		=0x0A		os: Tops/20
+>>14	byte		=0x0B		os: WinNT
+>>14	byte		=0x0E		os: Win32
+>9	beshort		>0x0939
+>>9	byte&0xf0	=0x00		- version 0.
+>>9	byte&0xf0	=0x10		- version 1.
+>>9	byte&0xf0	=0x20		- version 2.
+>>9	beshort&0x0fff	x		\b%03x,
+>>15	byte		1		LZO1X-1,
+>>15	byte		2		LZO1X-1(15),
+>>15	byte		3		LZO1X-999,
+## >>25	bedate		>0		last modified: %s,
+>>17	byte		=0x00		os: MS-DOS
+>>17	byte		=0x01		os: Amiga
+>>17	byte		=0x02		os: VMS
+>>17	byte		=0x03		os: Unix
+>>17	byte		=0x05		os: Atari
+>>17	byte		=0x06		os: OS/2
+>>17	byte		=0x07		os: MacOS
+>>17	byte		=0x0A		os: Tops/20
+>>17	byte		=0x0B		os: WinNT
+>>17	byte		=0x0E		os: Win32