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{ coreutils, gnused, writeDashBin, zbar }:
writeDashBin "qrscan" ''
set -efu
tmpdir=$(${coreutils}/bin/mktemp --tmpdir -d qrscan.XXXXXXXX)
codefile=$tmpdir/code
cleanup() {
${coreutils}/bin/rm "$codefile"
${coreutils}/bin/rmdir "$tmpdir"
}
${coreutils}/bin/mkfifo "$codefile"
${zbar}/bin/zbarcam > "$codefile" &
zbarcampid=$!
exec < "$codefile"
while read -r code; do
code=$(printf %s "$code" | ${gnused}/bin/sed -n 's/^QR-Code://p')
if test -n "$code"; then
${coreutils}/bin/kill "$zbarcampid"
echo "$code"
fi
done
''
|
