#!/bin/sh
#
#  @(#)fs2ikon 1.4 91/10/24
#
#  Usage: fstoicon file.fs ...
#
#  converts Usenix FaceSaver image into 48x48x1 ikons
#
#  Uses the pbm bitmap toolkit.
#
#  Copyright (c) Chris Maltby - Softway Pty Ltd - June 1990.
#
#  Permission is given to distribute these sources, as long as the
#  copyright messages are not removed, and no monies are exchanged. 
#
#  No responsibility is taken for any errors on inaccuracies inherent
#  either to the comments or the code of this program, but if reported
#  to me, then an attempt will be made to fix them.

for f
do
    file=`basename $f ".fs"`
    fstopgm $file.fs > $file.pgm
    set `sed -n -e 2p -e 2q $file.pgm`
    x=$1
    y=$2
    if [ $x -ge $y ]
    then
	ppmscale -width 48 $file.pgm | ppmtopgm | pgmtopbm > $file.pbm
	set `sed -n -e 2p -e 2q $file.pbm`
	yo=`expr '(' 48 - $2 ')' / 2`
	pbmmake 48 48 |
	    pnmpaste $file.pbm 0 $yo |
	    pbmtoicon 
    else
	ppmscale -height 48 $file.pgm | ppmtopgm | pgmtopbm > $file.pbm
	set `sed -n -e 2p -e 2q $file.pbm`
	xo=`expr '(' 48 - $1 ')' / 2`
	pbmmake 48 48 |
	    pnmpaste $file.pbm $xo 0 |
	    pbmtoicon
    fi |
	sed -e 1,2d -e '20s/$/,/' |
	tr -d '\011\012' |
	tr ',' '\012' |
	sed -e 's/^/0x/' |
	pr -l1 -t -w22 -3 -s, |
	sed -e 's/$/,/' > $file.face
    rm $file.pbm
done