Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!island!daniel
From: daniel@island.uu.net (Dan Smith "Ivana wanna, Trump chump")
Newsgroups: comp.windows.x
Subject: Re: Xloadimage patchlevel 04 now available
Message-ID: <1417@island.uu.net>
Date: 1 Mar 90 00:43:25 GMT
References: <1990Feb23.165346.26243@intercon.com> <4953@helios.ee.lbl.gov> <1990Feb26.184738.3816@intercon.com>
Reply-To: daniel@island.uu.net (Dan Smith "Ivana wanna, Trump chump")
Organization: Island Graphics, Marin County, California
Lines: 33

>In article <4953@helios.ee.lbl.gov>, jef@ace.ee.lbl.gov (Jef Poskanzer) writes:
>> Another possible design would be for the pXm-reading library routines to fork
>> off such a magic-number switch when they don't recognize a file format.
>
>I like this idea.  It would also be nice if the magic-number switcher was
>driven by a configuration file somewhere, so that one could add formats at
>will (one of the strengths of pbmplus already).
>

	A quickie solution that would go part of the way is to have
a shell script wrapper that would work off of file name extensions:

#! /bin/csh -f
#
#       cvt_fmt
if ($#argv != 2) then
        cat << +++
usage: cvt_fmt file fmt_to_convert_to
example: "cvt_fmt foo.xbm rast" would give a "foo.rast" file
+++
else
        set source=$1
        set dest=$2
        ${source:e}topbm $source | pbmto${dest} > ${source:r}.$dest
endif

	add cases for color and graymap and additional seasoning to
taste :-)

				dan
-- 
   dansmith@well.sf.ca.us   daniel@island.uu.net   unicom!daniel@pacbell.com
ph: (415) 332 3278 (h), 491 1000 (w) disclaimer: Island's coffee was laced :-)