![]() |
Welcome to ftp.nluug.nl Current directory: /pub/ftp/os/NetBSD/NetBSD-current/src/external/gpl2/mkhybrid/dist/libfile/ |
|
Contents of README:# @(#)README 1.1 98/06/16 joerg Find file types by using a modified "magic" file Based on file v3.22 by Ian F. Darwin (see libfile/LEGAL.NOTICE and libfile/README.dist - File v3.22 can be found at many archive sites) For each entry in the magic file, the "message" for the initial offset MUST be 4 characters for the CREATOR and 4 characters for the TYPE - white space is optional between them. Any other characters on this line are ignored. Continuation lines (starting with a '>') are also ignored i.e. only the initial offset lines are used. e.g magic entry for a GIF file: # off type test message # # GIF image 0 string GIF8 8BIM GIFf >4 string 7a \b, version 8%s, >4 string 9a \b, version 8%s, >6 leshort >0 %hd x >8 leshort >0 %hd, #>10 byte &0x80 color mapped, #>10 byte&0x07 =0x00 2 colors #>10 byte&0x07 =0x01 4 colors #>10 byte&0x07 =0x02 8 colors #>10 byte&0x07 =0x03 16 colors #>10 byte&0x07 =0x04 32 colors #>10 byte&0x07 =0x05 64 colors #>10 byte&0x07 =0x06 128 colors #>10 byte&0x07 =0x07 256 colors Just the "8BIM" "GIFf" will be used whatever the type of GIF file it is. The continuation lines are used by the "file" command, but ignored by mkhybrid. They could be left out completely. The complete format of the magic file is given in the magic man page (magic.5). See the file "magic" for other examples Use with the -magic magic_file option, where magic_file is a file described above. The magic file can be used with the mapping file (option -map) - the order these options appear on the command line is important. mkhybrid will try to detect if the file is one of the Unix/Mac files (e.g. a CAP or Netatalk file) first. If that fails, it will then use the magic and/or mapping file e.g: mkhybrid -o output.raw -map mapping -magic magic src_dir The above will check filename extensions first, if that fails to set the CREATOR/TYPE, the magic file will be used. To check the magic file before the filename extensions, use: mkhybrid -o output.raw -magic magic -map mapping src_dir Using just a magic file - filename extensions will not be checked e.g: mkhybrid -o output.raw -magic magic src_dir For the magic method to work, each file must be opened and read twice (once to find it's CREATOR/TYPE, and a second time to actually copy the file to the CD image). Therefore the -magic option may significantly increase processing time. If a file's CREATOR/TYPE is not set via the magic and mapping matches, then the file is given the default CREATOR/TYPE. |
Name Last modified Size
Parent Directory -
CVS/ 20-Jun-2024 05:01 -
LEGAL.NOTICE 31-May-2024 21:52 2.0K
README 31-May-2024 21:52 2.7K
apprentice.c 31-May-2024 22:25 12K
file.h 20-Jun-2024 05:01 4.3K
lfile.c 31-May-2024 22:25 5.5K
patchlevel.h 31-May-2024 21:52 4.1K
proto.h 31-May-2024 21:49 1.0K
softmagic.c 31-May-2024 22:25 8.8K
NLUUG - Open Systems. Open Standards
Become a member
and get discounts on conferences and more, see the NLUUG website!