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#!/bin/sh
# genTile.sh: Create a framed tile in the specified color
#
# Usage: genTile.sh [-s SIZE] COLOR
usageMessage="Usage: ${0} [-s SIZE] COLOR"
error() {
printf '%s error: %s\n' "$0" "$*" >&2
}
errorAndUsage() {
printf '%s error: %s\n%s\n' "$0" "$*" "$usageMessage" >&2
}
clean() {
[ -f "$tmpFile" ] && rm "$tmpFile"
}
size=64
borderSize=2
# Process options
while getopts ':s:' opt; do
case $opt in
's' )
size="$OPTARG"
;;
'?' )
printf '%s\n' "$usageMessage" >&2
exit 1
esac
done
shift $((OPTIND - 1))
borderlessSize=$(( size - (borderSize * 2) ))
color="$1"
tmpFile="/tmp/${color}Temp.png"
outputFile="${color}.png"
[ -z "$color" ] && errorAndUsage "No color specified." && exit 1
magick -size "${borderlessSize}x${borderlessSize}" "canvas:${color}" "$tmpFile" || exit 2
convert "$tmpFile" -bordercolor black -border "${borderSize}x${borderSize}" "$outputFile" || clean && exit 2
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