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#!/bin/sh
# Attempt to convert any image file to XPM format. Requires the netpbm
# package for all formats except XPM itself. JPEG also requires the
# djpeg program.
# Compressed files are automatically decompressed before converting.
# Requires gzip and uncompress.
# For unknown extensions, the script falls back to anytopnm which is
# part of netpbm.
# This is where netpbm installs itself by default
PATH="$PATH:/usr/local/netpbm/bin"
export PATH
convert_image()
{
case "$1" in
*.gz )
name=`basename "$1" .gz`
tmpfile=/tmp/DeCoDe_${name}
cp "$1" "${tmpfile}.gz"
gzip -df "${tmpfile}.gz"
convert_image "$tmpfile"
rm "${tmpfile}"
;;
*.Z )
name=`basename "$1" .Z`
tmpfile=/tmp/DeCoDe_${name}
cp "$1" "${tmpfile}.Z"
uncompress -f "${tmpfile}.Z"
convert_image "${tmpfile}"
rm "${tmpfile}"
;;
*.gif | *.GIF )
giftopnm "$1" | ppmtoxpm 2> /dev/null
;;
*.jpg | *.jpeg | *.JPG | *.JPEG )
djpeg -colors 128 "$1" | ppmtoxpm 2> /dev/null
;;
*.tif | *.tiff | *.TIF | *.TIFF )
tifftopnm "$1" | ppmtoxpm 2> /dev/null
;;
*.png | *.PNG )
pngtopnm "$1" | ppmtoxpm 2> /dev/null
;;
*.bmp | *.BMP )
bmptoppm "$1" | ppmtoxpm 2> /dev/null
;;
*.xpm | *.XPM )
cat "$1"
;;
* )
anytopnm "$1" | ppmtoxpm 2> /dev/null
;;
esac
}
convert_image "$1"
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