| 78ed81a3 |
1 | # |
| 2 | # Formats for various forms of compressed data |
| 3 | # Formats for "compress" proper have been moved into "compress.c", |
| 4 | # because it tries to uncompress it to figure out what's inside. |
| 5 | # |
| 6 | # XXX - the two "packed data" versions are byte-swapped versions of |
| 7 | # one another; is that because the 2-byte magic number is written |
| 8 | # out in native byte order, with "unpack" figuring out the byte order |
| 9 | # from the magic number (in which case both can be left as is, or |
| 10 | # changed to specify a byte order *and* to indicate the byte order of |
| 11 | # the packing machine), or because the old "file" didn't have any way of |
| 12 | # having "magic"-file entries that specified a particular byte order? |
| 13 | # |
| 15637ed4 |
14 | 0 short 017436 packed data |
| 78ed81a3 |
15 | 0 short 017037 packed data |
| 15637ed4 |
16 | |
| 78ed81a3 |
17 | # |
| 18 | # This magic number is byte-order-independent. |
| 19 | # |
| 20 | 0 short 017437 old packed data |
| 21 | |
| 22 | # |
| 23 | 0 string \377\037 compacted data |
| 24 | 0 short 0145405 huf output |
| 25 | # |
| 26 | # Squeeze and Crunch, from Keith Waclena <keith@cerberus.uchicago.edu> |
| 27 | # These numbers were gleaned from the Unix versions of the programs to |
| 28 | # handle these formats. Note that I can only uncrunch, not crunch, and |
| 29 | # I didn't have a crunched file handy, so the crunch number is untested. |
| 30 | 0 short 0x76FF squeezed data (CP/M, DOS) |
| 31 | 0 short 0x76FE crunched data (CP/M, DOS) |
| 32 | # Freeze |
| 33 | 0 short 0x1f9f Frozen file 2.1 |
| 34 | 0 short 0x1f9e Frozen file 1.0 |
| 35 | # |
| 36 | # GNU gzip compressor, from christos@deshaw.com (Christos Zoulas) |
| 37 | # |
| 38 | 0 string \037\213 gzip compressed file method: |
| 39 | >2 byte <8 reserved, |
| 40 | >2 byte 8 deflate, |
| 41 | >3 byte &0x1f flags: |
| 42 | >3 byte &0x01 ascii-text, |
| 43 | >3 byte &0x02 multi-part, |
| 44 | >3 byte &0x04 name-present, |
| 45 | >3 byte &0x08 comment-present, |
| 46 | >3 byte &0x10 encrypted, |
| 47 | >4 ledate x last modified: %s, |
| 48 | >8 byte x extra-flags: %x, |
| 49 | >9 byte =0x00 os: MS/DOS |
| 50 | >9 byte =0x01 os: Amiga |
| 51 | >9 byte =0x02 os: VMS |
| 52 | >9 byte =0x03 os: Unix |
| 53 | >9 byte =0x05 os: Atari |
| 54 | >9 byte =0x06 os: OS/2 |
| 55 | >9 byte =0x07 os: MacOS |
| 56 | >9 byte =0x0A os: Tops/20 |
| 57 | >9 byte =0x0B os: Win/32 |
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