env/bin/screenshot.sh
2019-09-11 17:44:49 +00:00

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#!/bin/sh
# env
# Written in 2019 by Lucas
# CC0 1.0 Universal/Public domain - No rights reserved
#
# To the extent possible under law, the author(s) have dedicated all
# copyright and related and neighboring rights to this software to the
# public domain worldwide. This software is distributed without any
# warranty. You should have received a copy of the CC0 Public Domain
# Dedication along with this software. If not, see
# <http://creativecommons.org/publicdomain/zero/1.0/>.
usage() {
cat - <<. >&2
Usage:
${0##*/}
${0##*/} -id id
${0##*/} -name name
${0##*/} -window
.
exit 1
}
save_screenshot() {
xwdtopnm | pnmtopng >~/media/ss/"$(date +%Y%m%d-%H%M%S)".png
}
case $# in
0) xwd -silent -root | save_screenshot
;;
1) if [ "$1" != "-window" ]; then
printf "%s: Unknown option \"%s\".\n" \
"${0##*/}" "$1" >&2
exit 1
fi
xwd -silent | save_screenshot
;;
2) if [ "$1" != "-id" ] && [ "$1" != "-name" ]; then
printf "%s: Unknown option \"%s\".\n" \
"${0##*/}" "$1" >&2
exit 1
fi
if [ -z "$2" ]; then
printf "%s: %s expects a non-empty parameter.\n" \
"${0##*/}" "$1" >&2
exit 1
fi
xwd -silent "$1" "$2" | save_screenshot
;;
*) usage
;;
esac