https://github.com/orc/magicfilter

Magicfilter v2
https://github.com/orc/magicfilter

Last synced: about 1 month ago
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Magicfilter v2

• Host: GitHub
• URL: https://github.com/orc/magicfilter
• Owner: Orc
• Created: 2010-06-25T07:57:08.000Z (over 14 years ago)
• Default Branch: main
• Last Pushed: 2020-06-16T00:35:18.000Z (over 4 years ago)
• Last Synced: 2023-10-20T22:13:09.916Z (about 1 year ago)
• Language: C
• Homepage: http://www.pell.portland.or.us/~orc/Code/magicfilter
• Size: 186 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README

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README

        
This is magicfilter 2.3

It's somewhat different from magicfilter 1.2:

    * the printer definition file format has changed;  it is now a simple

      m4 macro file that passes define()'s in to magicfilter.

    * the code uses libmagic (either the one in recent versions of

      file(1) or a homemade clone of it in the copy of file that's

      included in the sources) to do pattern matching instead of

      hand-identifying file types.

    * system() is no longer used to execute filters and pipes; they are now

      directly execvp'ed to cut down on the number of processes

      magicfilter launches.  This means that environment variables

      are no longer substituted, except for the special case of single

      arguments named $FILE, which, if they are arguments to fpipe and

      ffilters, will be replaced with the name of the scratchfile created

      for the pipe.  If this is a major problem, pester me and I'll think

      about putting system() back in.

    * all new processes are children of magicfilter, instead of some being

      punted off into their own little groups.

    * reject doesn't do mail notifications yet.

      

Building magicfilter

    magicfilter 2.3 doesn't use gnu autoconf any more, because gnu autoconf

    requires gnu m4 and I don't have that on Mastodon.  Instead, I've written

    my own little replacement called configure.sh, which works somewhat the

    same as the gnu configure script:

    I configure magicfilter via:

    CC="cc -baout -m386" CFLAGS="-O2" ./configure.sh --prefix=/usr

    ./configure.sh --help gives a listing of the options it currently

    accepts; most are similar to the gnu autoconf ones, except --path,

    which gives configure a path so it will look for programs in places

    other than the default /bin:/usr/bin:/usr/local/bin path. 

Copyrights

    libfile is made from the file(1) program, and carries the same

    BSD-style copyright.

    magicfilter itself ended up being completely rewritten, and now

    carries a BSD-style copyright.

    The manual pages were written by hpa, and thus carry the same

    copyright -- the GNU GPL -- as magicfilter 1.2 does.

    The filters were written by hpa, et alii, then trimmed fairly

    drastically for magicfilter 2.  They are public domain.

-david parsons ([email protected])