Add Audacious support

ptgdp

@@ -15,7 +15,7 @@ unset _xdguserdirs
 declare -r _name="$(basename -- "$0")"
 declare -r _musicdir="${XDG_MUSIC_DIR:-$HOME/Music}"
 declare -r _ptgdpmusicdir="$_musicdir/PTGDP Songs"
-declare -ra _supportedbackends=("mpd")
+declare -ra _supportedbackends=("mpd" "audacious")
 # May-need-amended variables
 declare _mpdroot="$_musicdir"
 # Options
@@ -44,6 +44,13 @@ log() {
 		printf "%s\\n" "$1"
 	fi
 }
+warn() {
+	# Print a yellow line to the terminal, respecting _optverbose
+	[ -z "$1" ] && return 1
+	if (( _optverbose >= ${2:-0} )); then
+		printf "\\e[33m%s\\e[0m\\n" "$1"
+	fi
+}
 error() {
 	# Print a red line to the terminal, exit if $2 is specified
 	[ -z "$1" ] && return 1
@@ -161,6 +168,9 @@ backend-validate() {
 	) || return $?
 	# Backend-specific checks
 	case ${_config[backend]} in
+		audacious)
+			has audacious audtool || return 1
+			;;
 		mpd)
 			has mpd mpc || return 1
 			pgrep mpd > /dev/null 2>&1 || return 2
@@ -172,6 +182,10 @@ backend-enqueue() { # Enqueues a song
 	# Note: mpd will assume you've updated the library since!
 	[ -z "$1" ] && return 1
 	case ${_config[backend]} in
+		audacious)
+			audtool --playlist-addurl "$1"
+			return 0
+			;;
 		mpd)
 			file=${1##$_mpdroot/}
 			if ! mpc add "$file"; then
@@ -185,6 +199,9 @@ backend-enqueue() { # Enqueues a song
 backend-play() {
 	# Plays a set up queue
 	case ${_config[backend]} in
+		audacious)
+			audtool --playback-play
+			;;
 		mpd)
 			if ! mpc play > /dev/null 2>&1; then
 				error "Could not play queue ($?)"
@@ -198,6 +215,11 @@ backend-play() {
 backend-execqueue() {
 	# Executes a queue, enqueueing files and autoplaying if configured
 	case ${_config[backend]} in
+		audacious)
+			if ! pgrep audacious > /dev/null 2>&1; then
+				warn "Audacious is not running; songs will be downloaded but not enqueued"
+			fi
+			;;
 		mpd)
 			if ! mpc update --wait > /dev/null 2>&1; then
 				error "Failed to update mpd library" 51
@@ -335,8 +357,8 @@ main() {
 	if ! has youtube-dl; then
 		error "Failed to validate dependency on program: $_return" 1
 	fi
-	if [ -n "${_args[@]}" ]; then
+	if [ -n "${_args[*]}" ]; then
-		for arg in ${_args[@]}; do
+		for arg in "${_args[@]}"; do
 			playlist "$arg"
 		done
 	else

ptgdp.conf

@@ -4,7 +4,7 @@
 #
 
 # The media player backend to use
-# Supported: mpd
+# Supported: mpd, audacious
 # Default: mpd
 backend=mpd