+++ /dev/null
-#! /usr/bin/perl -w
-
-use autodie qw{:all};
-use strict;
-
-use DisOrder;
-use File::FcntlLock;
-use Getopt::Long qw{:config gnu_compat bundling
- require_order no_getopt_compat};
-use POSIX qw{:errno_h :fcntl_h};
-
-###--------------------------------------------------------------------------
-### Configuration.
-
-my %C = (config => "$ENV{HOME}/.disorder/passwd",
- lockdir => "$ENV{HOME}/.disorder/",
- mixer => "Master,0");
-
-(my $PROG = $0) =~ s:^.*/::;
-my $TITLE = "DisOrder";
-my $VARIANT = "default";
-if (-l $C{config} && (my $t = readlink $C{config}) =~ /^passwd\.(.*)$/)
- { $VARIANT = $1; $TITLE .= " ($1)"; }
-
-###--------------------------------------------------------------------------
-### Random utilities.
-
-sub run_discard_output (@) {
- my $kid = fork();
- if (!$kid) {
- open STDOUT, ">/dev/null" or die "open /dev/null: $!";
- exec @_;
- }
- waitpid $kid, 0;
- if ($?) {
- my $st;
- if ($? >= 256) { $st = sprintf "rc = %d", $? >> 8; }
- else { $st = sprintf "signal %d", $?; }
- die "$_[0] failed ($st)";
- }
-}
-
-sub notify ($$) {
- my ($head, $body) = @_;
-
- $body =~ s:\&:&:g;
- $body =~ s:\<:<:g;
- $body =~ s:\>:>:g;
-
- ##print "****************\n$head\n\n$body\n"; return;
-
- run_discard_output "notify-send",
- "-c", "DisOrder", "-i", "audio-volume-high", "-t", "5000",
- $head, $body;
-}
-
-sub try_unlink ($) {
- my ($f) = @_;
- eval { unlink $f; };
- die $@ if $@ and $@->errno != ENOENT;
-}
-
-###--------------------------------------------------------------------------
-### Locking protocol.
-
-my $LKFILE = "$C{lockdir}/disorder-notify-$VARIANT.lock";
-my $LKFH;
-
-sub locked_by () {
-
- ## Try to open the lock file. If it's not there, then obviously it's not
- ## locked.
- my $fh;
- eval { open $fh, "<", $LKFILE; };
- if ($@) {
- return undef if $@->errno == ENOENT;
- die $@;
- }
-
- ## Take out a non-exclusive lock on the lock file.
- my $lk = new File::FcntlLock;
- $lk->l_type(F_RDLCK); $lk->l_whence(SEEK_SET);
- $lk->l_start(0); $lk->l_len(0);
- if ($lk->lock($fh, F_SETLK)) { close $fh; return undef; }
-
- ## Read the pid of the current lock-holder.
- chomp (my $pid = (readline $fh) // "<unknown>");
- close $fh;
- return $pid;
-}
-
-sub claim_lock () {
- sysopen my $fh, $LKFILE, O_CREAT | O_WRONLY;
-
- my $lk = new File::FcntlLock;
- $lk->l_type(F_WRLCK); $lk->l_whence(SEEK_SET);
- $lk->l_start(0); $lk->l_len(0);
- if (!$lk->lock($fh, F_SETLK)) {
- return undef if $! == EAGAIN;
- die "failed to lock `$LKFILE': $!";
- }
-
- truncate $fh, 0;
- print $fh "$$\n";
- flush $fh;
- $LKFH = $fh;
- 1;
-}
-
-###--------------------------------------------------------------------------
-### DisOrder utilities.
-
-sub get_state0 ($) {
- my ($sk) = @_;
- my %st = ();
-
- LINE: for (;;) {
- my @f = split_fields readline $sk;
- if ($f[1] ne "state") { last LINE; }
- elsif ($f[2] eq "enable_random") { $st{random} = 1; }
- elsif ($f[2] eq "disable_random") { $st{random} = 0; }
- elsif ($f[2] eq "enable_play") { $st{play} = 1; }
- elsif ($f[2] eq "disable_play") { $st{play} = 0; }
- elsif ($f[2] eq "resume") { $st{pause} = 0; }
- elsif ($f[2] eq "pause") { $st{pause} = 1; }
- }
- return \%st;
-}
-
-my $CONF = undef;
-
-sub configured_connection (;$) {
- my ($quietp) = @_;
- $CONF //= load_config $C{config};
- return connect_to_server %$CONF, $quietp // 0;
-}
-
-sub get_state () {
- my $sk = configured_connection;
- send_command0 $sk, "log";
- my $st = get_state0 $sk;
- close $sk;
- return $st;
-}
-
-sub decode_track_name ($\%) {
- my ($sk, $info) = @_;
- return unless exists $info->{track};
- my $track = $info->{track};
- for my $i ("artist", "album", "title") {
- my @f = split_fields send_command $sk, "part", $track, "display", "$i";
- $info->{$i} = $f[0];
- }
-}
-
-sub fmt_duration ($) {
- my ($n) = @_;
- return sprintf "%d:%02d", int $n/60, $n%60;
-}
-
-sub get_now_playing ($) {
- my ($sk) = @_;
- my $r = send_command $sk, "playing";
- defined $r or return {};
- my %info = split_fields $r;
- decode_track_name $sk, %info;
- exists $info{sofar} and
- $info{length} = send_command $sk, "length", $info{track};
- return \%info;
-}
-
-sub format_now_playing (;\%) {
- my ($info) = @_;
- unless (defined $info) {
- my $sk = configured_connection;
- $info = get_now_playing $sk;
- close $sk;
- }
- exists $info->{track} or return "Nothing.";
- my $r = "$info->{artist}: ‘$info->{title}’";
- $r .= ", from ‘$info->{album}’" if $info->{album};
- exists $info->{sofar} && exists $info->{length} and
- $r .= sprintf " (%s/%s)",
- fmt_duration $info->{sofar}, fmt_duration $info->{length};
- $r .= "\n(chosen by $info->{submitter})" if exists $info->{submitter};
- return $r;
-}
-
-sub watch_and_notify0 ($) {
- my ($now_playing) = @_;
-
- my $sk = configured_connection 1;
- my $sk_log = configured_connection 1;
-
- send_command0 $sk_log, "log";
- my $st = get_state0 $sk_log;
- my $msg = "playing " . ($st->{play} ? "enabled" : "disabled");
- $msg .= "; random play " . ($st->{random} ? "enabled" : "disabled");
- $msg .= "; " . ($st->{pause} ? "paused" : "playing");
- notify "$TITLE state", "Connected: $msg";
- if ($st->{play} && $now_playing) {
- my $info = get_now_playing $sk;
- notify "$TITLE: Now playing", format_now_playing %$info;
- }
-
- fcntl $sk_log, F_SETFL, (fcntl $sk_log, F_GETFL, 0) | O_NONBLOCK;
- my $buffer = "";
- my @lines = ();
- my $rdin = ""; vec($rdin, (fileno $sk_log), 1) = 1;
- my $loss;
-
- WATCH: for (;;) {
- for my $line (@lines) {
- my @f = split_fields $line;
- if ($f[1] eq "state") {
- my $msg = undef;
- if ($f[2] eq "disable_random")
- { $st->{random} = 0; $msg = "Random play disabled"; }
- elsif ($f[2] eq "enable_random")
- { $st->{random} = 1; $msg = "Random play enabled"; }
- elsif ($f[2] eq "disable_play")
- { $st->{play} = 0; $msg = "Playing disabled"; }
- elsif ($f[2] eq "enable_play")
- { $st->{play} = 1; $msg = "Playing enabled"; }
- elsif ($f[2] eq "pause")
- { $st->{pause} = 1; $msg = "Paused"; }
- elsif ($f[2] eq "resume")
- { $st->{pause} = 0; $msg = "Playing"; }
- notify "$TITLE state", $msg if defined $msg;
- } elsif ($f[1] eq "playing") {
- my %info;
- $info{track} = $f[2];
- $info{submitter} = $f[3] if @f > 3;
- decode_track_name $sk, %info;
- notify "$TITLE: Now playing", format_now_playing %info;
- } elsif ($f[1] eq "scratched") {
- my %info;
- $info{track} = $f[2];
- decode_track_name $sk, %info;
- notify "$TITLE: Scratched by $f[3]", format_now_playing %info;
- } elsif ($f[1] eq "completed" && !$st->{play}) {
- notify "$TITLE state", "Stopped";
- }
- }
-
- if (!$sk_log) { $loss = "EOF from server"; last WATCH; }
- my $nfd = select my $rdout = $rdin, undef, undef, 60;
- if (!$nfd) {
- eval { print $sk_log "."; flush $sk_log; };
- if ($@) { $loss = "error from write: " . $@->errno; last WATCH; }
- @lines = ();
- } else {
- READ: for (;;) {
- my ($b, $n);
- eval { $n = sysread $sk_log, $b, 4096; };
- if ($@ && $@->errno == EAGAIN) { last READ; }
- elsif ($@) { $loss = "error from read: " . $@->errno; last WATCH; }
- elsif (!$n) { close $sk_log; $sk_log = undef; last READ; }
- else { $buffer .= $b; }
- }
-
- @lines = split /\n/, $buffer, -1;
- $buffer = pop @lines;
- }
- }
-
- notify "$TITLE state", "Lost connection: $loss";
-
- close $sk;
- close $sk_log if defined $sk_log;
-}
-
-sub watch_and_notify ($) {
- my ($now_playing) = @_;
-
- claim_lock or exit 1;
-
- for (;;) {
- eval { watch_and_notify0 $now_playing; };
- $now_playing = 1;
- sleep 5;
- }
-}
-
-###--------------------------------------------------------------------------
-### User-facing operations.
-
-my %OP;
-
-$OP{"volume-up"} =
- sub { run_discard_output "amixer", "sset", $C{mixer}, "5\%+"; };
-$OP{"volume-down"} =
- sub { run_discard_output "amixer", "sset", $C{mixer}, "5\%-"; };
-
-$OP{"scratch"} = sub {
- my $sk = configured_connection;
- send_command $sk, "scratch";
- close $sk;
-};
-
-$OP{"enable/disable"} = sub {
- my $st = get_state;
- my $sk = configured_connection;
- if ($st->{play}) { send_command $sk, "disable"; }
- else { send_command $sk, "enable"; }
- close $sk;
-};
-
-$OP{"play/pause"} = sub {
- my $st = get_state;
- my $sk = configured_connection;
- if (!$st->{play}) {
- send_command $sk, "enable";
- if ($st->{pause}) { send_command $sk, "resume"; }
- } else {
- if ($st->{pause}) { send_command $sk, "resume"; }
- else { send_command $sk, "pause"; }
- }
- close $sk;
-};
-
-$OP{"watch"} = sub {
- if (defined (my $lkpid = locked_by)) {
- print STDERR "$0: already watched by pid $lkpid\n";
- exit 2;
- }
- watch_and_notify 1;
-};
-
-$OP{"now-playing"} = sub {
- my $sk = configured_connection;
- my $info = get_now_playing $sk;
- close $sk;
- print format_now_playing %$info;
- print "\n";
-};
-
-$OP{"notify-now-playing"} = sub {
- my $sk = configured_connection;
- my $info = get_now_playing $sk;
- close $sk;
- notify "$TITLE: Now playing", format_now_playing %$info;
- unless (defined locked_by) {
- fork and exit 0;
- watch_and_notify 0;
- }
-};
-
-$OP{"next-config"} = sub {
- (my $dir = $C{config}) =~ s:/[^/]*$::;
- my (@conf, $curr, $conf, $min);
-
- if (-l $C{config} && (my $t = readlink $C{config}) =~ /^passwd\.(.*)$/)
- { $curr = $1; }
-
- opendir my $dh, +$dir;
- FILE: while (my $f = readdir $dh)
- { push @conf, $1 if $f =~ /^passwd\.(.*[^~])$/; }
-
- for (my $i = 0; $i < @conf; $i++) {
- $min = $conf[$i] if (!defined $min) || $conf[$i] lt $min;
- $conf = $conf[$i]
- if ((!defined $curr) || $curr lt $conf[$i]) &&
- ((!defined $conf) || $conf[$i] lt $conf);
- }
- $conf = $min unless defined $conf;
-
- try_unlink "$dir/passwd.new";
- symlink "passwd.$conf", "$dir/passwd.new";
- rename "$dir/passwd.new", "$dir/passwd";
- notify "DisOrder configuration", "Switched to `$conf'";
-};
-
-###--------------------------------------------------------------------------
-### Main program.
-
-sub usage (\*) {
- my ($fh) = @_;
- print $fh "usage: $PROG [-u CONFIG] COMMAND\n";
-}
-
-sub help () {
- usage *STDOUT;
- print <<EOF;
-
-Command-line options:
- -h, --help Show this help text
- -u, --user-config Set user configuration file
-
-Commands:
- volume-up
- volume-down
- scratch
- enable/disable
- play/pause
- watch
- now-playing
- notify-now-playing
- next-config
-EOF
-}
-
-my $bad = 0;
-GetOptions
- "h|help" => sub { help; exit 0; },
- "u|user-config=s" => \$C{config}
- or $bad = 1;
-@ARGV == 1 or $bad = 1;
-if ($bad) { usage *STDERR; exit 2; }
-my $op = $ARGV[0];
-if (!exists $OP{$op}) { print STDERR "$0: unknown op `$op'\n"; exit 2; }
-$OP{$op}();
-
-###----- That's all, folks --------------------------------------------------
~mdw / profile / blobdiff