3 # Copyright © 2019-2020 Nick Bowler
5 # Replace the current MPD play queue with a saved playlist, by rearranging
6 # existing queue entries when possible. This avoids losing the current
7 # player state when the loaded playlist is similar to the current queue.
9 # License GPLv3+: GNU General Public License version 3 or any later version.
10 # This is free software: you are free to change and redistribute it.
11 # There is NO WARRANTY, to the extent permitted by law.
16 use Encode::Locale qw(decode_argv);
17 decode_argv(Encode::FB_CROAK);
19 binmode(STDOUT, ":utf8");
21 use Getopt::Long qw(:config gnu_getopt);
24 use lib "$FindBin::Bin";
29 # Returns a hash reference mapping filenames to an array reference listing
30 # the queue IDs for that file in the current play queue.
31 sub get_tracks_in_play_queue {
35 MPD::exec("playlistinfo");
40 if (/^(\w+): (.*)$/) {
42 $entry = $matches{$2} //= [];
43 } elsif ($1 eq "Id") {
52 # Given an MPD playlist name, returns a reference to an array containing
53 # (in order) the files in the playlist.
54 sub get_playlist_files {
58 MPD::exec("listplaylist", $plname);
63 if (/^(\w+): (.*)$/) {
76 Copyright © 2019 Nick Bowler
77 License GPLv3+: GNU General Public License version 3 or any later version.
78 This is free software: you are free to change and redistribute it.
79 There is NO WARRANTY, to the extent permitted by law.
84 my ($fh) = (@_, *STDERR);
86 print $fh "Usage: $0 [options] playlist\n";
87 print $fh "Try $0 --help for more information.\n" unless (@_ > 0);
93 This is "mpdreload": a tool to reload a stored playlist into the MPD queue.
96 -h, --host=HOST Connect to the MPD server on HOST, overriding defaults.
97 -p, --port=PORT Connect to the MPD server on PORT, overriding defaults.
98 -V, --version Print a version message and then exit.
99 -H, --help Print this message and then exit.
101 Report bugs to <nbowler\@draconx.ca>
106 'host|h=s' => \$MPD::host,
107 'port|p=s' => \$MPD::port,
109 'V|version' => sub { print_version(); exit },
110 'H|help' => sub { print_help(); exit },
111 ) or do { print_usage(); exit 1};
114 print STDERR "Playlist name is required\n" unless @ARGV;
115 print STDERR "Excess command-line arguments\n" if @ARGV;
117 print_usage(); exit 1
120 $sock = MPD::connect();
122 # Retrieve the current play queue and target play queue.
123 MPD::run("tagtypes", "clear");
124 my $current = get_tracks_in_play_queue();
125 my $target = get_playlist_files($ARGV[0]);
127 MPD::exec("command_list_begin");
128 for (my $i = 0; $i < @$target; $i++) {
129 my $f = $target->[$i];
130 my $id = shift @{ $current->{$f} };
133 MPD::exec("moveid", $id, $i);
135 MPD::exec("addid", $f, $i);
139 # Remove any tracks left from the old play queue.
140 MPD::exec("deleteid", $_) foreach (map { @$_ } values %$current);
141 MPD::run("command_list_end");