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#!/bin/sh
cd $HOME/tmp-icons
# We process all of the xpm files in ~/icons, reducing their collective
# colourmap, and producing files in ~/tmp-icons.
# Make a note of those files with transparent bits for zapping afterwards:
# this isn't perfect, but seems to work OK for the pixmaps that I use.
# Notice that the input, output, and number of colours are hardwired.
# (The ppmtogif | giftoppm is to make sure the ppm file is in raw format, because
# ppmquant appears not to work with the result of xpmtoppm!)
echo Converting files to ppm format
NONE=""
for i in ../icons/*.xpm
do
echo -n $i " "
sed 's/[Nn]one/black/g' $i | xpmtoppm | ppmtogif | giftoppm > `basename $i .xpm`.ppm
if test -s `basename $i .xpm`.ppm
then
if grep -iq None $i
then
NONE="$NONE `basename $i`"
fi
else
rm -f `basename $i .xpm`.ppm
fi
done
echo Performing quantization to 32 colours
ppmquantall 32 *.ppm
echo Converting to xpm format again
for i in *.ppm
do
echo -n $i " "
ppmtoxpm $i > `basename $i .ppm`.xpm
rm -f $i
done
echo Trying to fix transparent pixels in some files
for i in $NONE
do
echo $i
sed 's/` c #000000/` c None/' $i > $i-tmp.xpm
mv $i-tmp.xpm $i
done
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