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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
qr [-s PIXEL_SIZE]
qr -h
EOF
}
help() {
cat <<-'EOF'
Options:
-s PIXEL_SIZE size of the pixel (default 10)
-h, --help show this help message
Read data from STDIN and present a QR image with said data.
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
PIXEL_SIZE=10
while getopts 's:h' flag; do
case "$flag" in
s)
PIXEL_SIZE="$OPTARG"
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
cat | qrencode -s "$PIXEL_SIZE" -o- | feh -
|
