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|
#!/usr/bin/env sh
# -*- sh -*-
: "${RADIO_STATIONS:=${XDG_CONFIG_HOME:-$HOME/.config}/radio/stations}"
: "${RADIO_PLAYER:=$(command -v mpv 2>/dev/null)}"
_radio_url=1
_radio_desc=2
_radio_tags=3
RADIO_PID_FILE=/tmp/radio.pid
RADIO_STATUS_FILE=/tmp/radio.status
usage() {
cat <<EOF
RADIO: play the radio
USAGE: radio -h
radio -k
radio [-s|-S]
radio -l [QUERY]
radio [STATION]
PARAMETERS:
STATION Radio station to play. Stations are defined in
\$RADIO_STATIONS (default: $RADIO_STATIONS).
If STATION matches more than one station, or if it
isn't present, radio will display a menu to select
from.
FLAGS:
-h Show this help.
-k Kill the currently-playing radio invocation.
-K Kill all instances of $RADIO_PLAYER.
-r Begin playing most recently-played radio, or prompt user.
-e Edit \$RADIO_STATIONS using \$EDITOR.
-s Show radio's status and exit.
-S Show radio's status until the user quits with C-c.
-l [QUERY] List all known stations and exit.
If QUERY is present, filter the list to those stations
matching QUERY.
See radio(1) and radio.stations(5) for more details. (TODO)
EOF
exit ${1:-0}
}
main() {
while getopts :kKrsShel: opt; do
case $opt in
h) usage ;;
k) _radio_kill ;;
K)
pkill "$RADIO_PLAYER"
exit
;;
r) set -- "$(cat /tmp/radio.last_played)" ;;
e) _radio_edit ;;
s) _radio_status ;;
S) _radio_status -f ;;
l) _radio_list "$OPTARG" ;;
:)
case "$OPTARG" in
l) _radio_list ;;
*)
echo >&2 "Option -$OPTARG requires an argument"
exit 1
;;
esac
;;
\?)
echo >&2 "Uknown option: -$OPTARG"
exit 1
;;
esac
done
shift $((OPTIND - 1))
_radio_play "$@"
}
_radio_status() {
trap 'echo;exit 0' INT
if [ "x$1" = x-f ]; then
follow=-f
else
follow=
fi
tail $follow "$RADIO_STATUS_FILE"
echo
exit
}
_radio_play() {
candidates="$(sed -e 1d -e '/^#/d' "$RADIO_STATIONS" | grep -i "$1")"
if [ -z "$candidates" ]; then
candidates="$(sed -e 1d -e '/^#/d' "$RADIO_STATIONS")"
fi
if [ "$(printf '%s\n' "$candidates" | wc -l)" -gt 1 ]; then
printf '%s\n' "$candidates" | cut -f $_radio_desc | cat -n -
read -p "Radio> " radio
if ! (echo "$radio" | grep -qE '^[0-9]+$'); then
exit 1
fi
station="$(printf '%s\n' "$candidates" | head -n "$radio" | tail -n 1)"
else
station="$candidates"
fi
echo "$station" | cut -f $_radio_desc >/tmp/radio.last_played
if [ -f "$RADIO_PID_FILE" ]; then
_radio_kill_impl
fi
echo >&2 "Playing $(echo "$station" | cut -f $_radio_desc)..."
"$RADIO_PLAYER" "$(echo "$station" | cut -f $_radio_url)" >"$RADIO_STATUS_FILE" 2>&1 &
echo $! >"$RADIO_PID_FILE"
exit
}
_radio_kill_impl() {
while xargs -a "$RADIO_PID_FILE" kill 2>/dev/null; do
printf '.'
done
}
_radio_kill() {
if ! [ -f "$RADIO_PID_FILE" ]; then
echo >&2 "I don't think radio is running."
exit 1
fi
printf >&2 '%s' "Killing radio"
_radio_kill_impl
rm "$RADIO_PID_FILE"
echo
exit
}
_radio_edit() {
exec $EDITOR "$RADIO_STATIONS"
}
_radio_list() {
sed 1d "$RADIO_STATIONS" |
grep "$1" |
awk '
BEGIN { FS="\t"; }
$0 !~ /^#/ {
descstr = $'$_radio_desc';
urlstr = $'$_radio_url';
tagstr = $'$_radio_tags';
printf "%-23s\t", substr(descstr,1,20) (length(descstr)>20?"...":"");
printf "%-23s\t", substr(tagstr,1,20) (length(tagstr)>20?"...":"");
printf "%-23s\n", substr(urlstr,1,20) (length(urlstr)>20?"...":"");
}'
exit
}
main "$@"
|
