8 use Getopt
::Long
qw{:config gnu_compat bundling
9 require_order no_getopt_compat
};
10 use POSIX
qw{:errno_h
:fcntl_h
};
12 ###--------------------------------------------------------------------------
15 my %C = (config
=> "$ENV{HOME}/.disorder/passwd",
16 lockdir
=> "$ENV{HOME}/.disorder/",
19 (my $PROG = $0) =~ s
:^.*/::;
20 my $TITLE = "DisOrder";
21 my $VARIANT = "default";
22 if (-l
$C{config
} && (my $t = readlink $C{config
}) =~ /^passwd\.(.*)$/)
23 { $VARIANT = $1; $TITLE .= " ($1)"; }
25 ###--------------------------------------------------------------------------
28 sub run_discard_output
(@
) {
31 open STDOUT
, ">/dev/null" or die "open /dev/null: $!";
37 if ($?
>= 256) { $st = sprintf "rc = %d", $?
>> 8; }
38 else { $st = sprintf "signal %d", $?
; }
39 die "$_[0] failed ($st)";
44 my ($head, $body) = @_;
46 $body =~ s
:\
&:&
;:g
;
50 ##print "****************\n$head\n\n$body\n"; return;
52 run_discard_output
"notify-send",
53 "-c", "DisOrder", "-i", "audio-volume-high", "-t", "5000",
60 die $@
if $@
and $@
->errno != ENOENT
;
63 ###--------------------------------------------------------------------------
66 my $LKFILE = "$C{lockdir}/disorder-notify-$VARIANT.lock";
71 ## Try to open the lock file. If it's not there, then obviously it's not
74 eval { open $fh, "<", $LKFILE; };
76 return undef if $@
->errno == ENOENT
;
80 ## Take out a non-exclusive lock on the lock file.
81 my $lk = new File
::FcntlLock
;
82 $lk->l_type(F_RDLCK
); $lk->l_whence(SEEK_SET
);
83 $lk->l_start(0); $lk->l_len(0);
84 if ($lk->lock($fh, F_SETLK
)) { close $fh; return undef; }
86 ## Read the pid of the current lock-holder.
87 chomp (my $pid = (readline $fh) // "<unknown>");
93 sysopen my $fh, $LKFILE, O_CREAT
| O_WRONLY
;
95 my $lk = new File
::FcntlLock
;
96 $lk->l_type(F_WRLCK
); $lk->l_whence(SEEK_SET
);
97 $lk->l_start(0); $lk->l_len(0);
98 if (!$lk->lock($fh, F_SETLK
)) {
99 return undef if $! == EAGAIN
;
100 die "failed to lock `$LKFILE': $!";
110 ###--------------------------------------------------------------------------
111 ### DisOrder utilities.
118 my @f = split_fields
readline $sk;
119 if ($f[1] ne "state") { last LINE
; }
120 elsif ($f[2] eq "enable_random") { $st{random
} = 1; }
121 elsif ($f[2] eq "disable_random") { $st{random
} = 0; }
122 elsif ($f[2] eq "enable_play") { $st{play
} = 1; }
123 elsif ($f[2] eq "disable_play") { $st{play
} = 0; }
124 elsif ($f[2] eq "resume") { $st{pause
} = 0; }
125 elsif ($f[2] eq "pause") { $st{pause
} = 1; }
132 sub configured_connection
(;$) {
134 $CONF //= load_config
$C{config
};
135 return connect_to_server
%$CONF, $quietp // 0;
139 my $sk = configured_connection
;
140 send_command0
$sk, "log";
141 my $st = get_state0
$sk;
146 sub decode_track_name
($\
%) {
147 my ($sk, $info) = @_;
148 return unless exists $info->{track
};
149 my $track = $info->{track
};
150 for my $i ("artist", "album", "title") {
151 my @f = split_fields send_command
$sk, "part", $track, "display", "$i";
156 sub fmt_duration
($) {
158 return sprintf "%d:%02d", int $n/60, $n%60;
161 sub get_now_playing
($) {
163 my $r = send_command
$sk, "playing";
164 defined $r or return {};
165 my %info = split_fields
$r;
166 decode_track_name
$sk, %info;
167 exists $info{sofar
} and
168 $info{length} = send_command
$sk, "length", $info{track
};
172 sub format_now_playing
(;\
%) {
174 unless (defined $info) {
175 my $sk = configured_connection
;
176 $info = get_now_playing
$sk;
179 exists $info->{track
} or return "Nothing.";
180 my $r = "$info->{artist}: ‘$info->{title}’";
181 $r .= ", from ‘$info->{album}’" if $info->{album
};
182 exists $info->{sofar
} && exists $info->{length} and
183 $r .= sprintf " (%s/%s)",
184 fmt_duration
$info->{sofar
}, fmt_duration
$info->{length};
185 $r .= "\n(chosen by $info->{submitter})" if exists $info->{submitter
};
189 sub watch_and_notify0
($) {
190 my ($now_playing) = @_;
192 my $sk = configured_connection
1;
193 my $sk_log = configured_connection
1;
195 send_command0
$sk_log, "log";
196 my $st = get_state0
$sk_log;
197 my $msg = "playing " . ($st->{play
} ?
"enabled" : "disabled");
198 $msg .= "; random play " . ($st->{random
} ?
"enabled" : "disabled");
199 $msg .= "; " . ($st->{pause
} ?
"paused" : "playing");
200 notify
"$TITLE state", "Connected: $msg";
201 if ($st->{play
} && $now_playing) {
202 my $info = get_now_playing
$sk;
203 notify
"$TITLE: Now playing", format_now_playing
%$info;
206 fcntl $sk_log, F_SETFL
, (fcntl $sk_log, F_GETFL
, 0) | O_NONBLOCK
;
209 my $rdin = ""; vec($rdin, (fileno $sk_log), 1) = 1;
213 for my $line (@lines) {
214 my @f = split_fields
$line;
215 if ($f[1] eq "state") {
217 if ($f[2] eq "disable_random")
218 { $st->{random
} = 0; $msg = "Random play disabled"; }
219 elsif ($f[2] eq "enable_random")
220 { $st->{random
} = 1; $msg = "Random play enabled"; }
221 elsif ($f[2] eq "disable_play")
222 { $st->{play
} = 0; $msg = "Playing disabled"; }
223 elsif ($f[2] eq "enable_play")
224 { $st->{play
} = 1; $msg = "Playing enabled"; }
225 elsif ($f[2] eq "pause")
226 { $st->{pause
} = 1; $msg = "Paused"; }
227 elsif ($f[2] eq "resume")
228 { $st->{pause
} = 0; $msg = "Playing"; }
229 notify
"$TITLE state", $msg if defined $msg;
230 } elsif ($f[1] eq "playing") {
232 $info{track
} = $f[2];
233 $info{submitter
} = $f[3] if @f > 3;
234 decode_track_name
$sk, %info;
235 notify
"$TITLE: Now playing", format_now_playing
%info;
236 } elsif ($f[1] eq "scratched") {
238 $info{track
} = $f[2];
239 decode_track_name
$sk, %info;
240 notify
"$TITLE: Scratched by $f[3]", format_now_playing
%info;
241 } elsif ($f[1] eq "completed" && !$st->{play
}) {
242 notify
"$TITLE state", "Stopped";
246 if (!$sk_log) { $loss = "EOF from server"; last WATCH
; }
247 my $nfd = select my $rdout = $rdin, undef, undef, 60;
249 eval { print $sk_log "."; flush
$sk_log; };
250 if ($@
) { $loss = "error from write: " . $@
->errno; last WATCH
; }
255 eval { $n = sysread $sk_log, $b, 4096; };
256 if ($@
&& $@
->errno == EAGAIN
) { last READ
; }
257 elsif ($@
) { $loss = "error from read: " . $@
->errno; last WATCH
; }
258 elsif (!$n) { close $sk_log; $sk_log = undef; last READ
; }
259 else { $buffer .= $b; }
262 @lines = split /\n/, $buffer, -1;
263 $buffer = pop @lines;
267 notify
"$TITLE state", "Lost connection: $loss";
270 close $sk_log if defined $sk_log;
273 sub watch_and_notify
($) {
274 my ($now_playing) = @_;
276 claim_lock
or exit 1;
279 eval { watch_and_notify0
$now_playing; };
285 ###--------------------------------------------------------------------------
286 ### User-facing operations.
291 sub { run_discard_output
"amixer", "sset", $C{mixer
}, "5\%+"; };
293 sub { run_discard_output
"amixer", "sset", $C{mixer
}, "5\%-"; };
295 $OP{"scratch"} = sub {
296 my $sk = configured_connection
;
297 send_command
$sk, "scratch";
301 $OP{"enable/disable"} = sub {
303 my $sk = configured_connection
;
304 if ($st->{play
}) { send_command
$sk, "disable"; }
305 else { send_command
$sk, "enable"; }
309 $OP{"play/pause"} = sub {
311 my $sk = configured_connection
;
313 send_command
$sk, "enable";
314 if ($st->{pause
}) { send_command
$sk, "resume"; }
316 if ($st->{pause
}) { send_command
$sk, "resume"; }
317 else { send_command
$sk, "pause"; }
323 if (defined (my $lkpid = locked_by
)) {
324 print STDERR
"$0: already watched by pid $lkpid\n";
330 $OP{"now-playing"} = sub {
331 my $sk = configured_connection
;
332 my $info = get_now_playing
$sk;
334 print format_now_playing
%$info;
338 $OP{"notify-now-playing"} = sub {
339 my $sk = configured_connection
;
340 my $info = get_now_playing
$sk;
342 notify
"$TITLE: Now playing", format_now_playing
%$info;
343 unless (defined locked_by
) {
349 $OP{"next-config"} = sub {
350 (my $dir = $C{config
}) =~ s
:/[^/]*$::;
351 my (@conf, $curr, $conf, $min);
353 if (-l
$C{config
} && (my $t = readlink $C{config
}) =~ /^passwd\.(.*)$/)
356 opendir my $dh, +$dir;
357 FILE
: while (my $f = readdir $dh)
358 { push @conf, $1 if $f =~ /^passwd\.(.*[^~])$/; }
360 for (my $i = 0; $i < @conf; $i++) {
361 $min = $conf[$i] if (!defined $min) || $conf[$i] lt $min;
363 if ((!defined $curr) || $curr lt $conf[$i]) &&
364 ((!defined $conf) || $conf[$i] lt $conf);
366 $conf = $min unless defined $conf;
368 try_unlink
"$dir/passwd.new";
369 symlink "passwd.$conf", "$dir/passwd.new";
370 rename "$dir/passwd.new", "$dir/passwd";
371 notify
"DisOrder configuration", "Switched to `$conf'";
374 ###--------------------------------------------------------------------------
379 print $fh "usage: $PROG [-u CONFIG] COMMAND\n";
386 Command-line options:
387 -h, --help Show this help text
388 -u, --user-config Set user configuration file
405 "h|help" => sub { help
; exit 0; },
406 "u|user-config=s" => \
$C{config
}
408 @ARGV == 1 or $bad = 1;
409 if ($bad) { usage
*STDERR
; exit 2; }
411 if (!exists $OP{$op}) { print STDERR
"$0: unknown op `$op'\n"; exit 2; }
414 ###----- That's all, folks --------------------------------------------------