1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2009 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "config.h"
21 #include "ncmpc.h"
22 #include "mpdclient.h"
23 #include "charset.h"
24 #include "options.h"
25 #include "command.h"
26 #include "ncu.h"
27 #include "screen.h"
28 #include "screen_utils.h"
29 #include "strfsong.h"
30 #include "i18n.h"
32 #ifndef NCMPC_MINI
33 #include "conf.h"
34 #endif
36 #ifdef ENABLE_LYRICS_SCREEN
37 #include "lyrics.h"
38 #endif
40 #ifdef ENABLE_LIRC
41 #include "lirc.h"
42 #endif
44 #include <stdlib.h>
45 #include <unistd.h>
46 #include <signal.h>
47 #include <string.h>
49 #ifdef ENABLE_LOCALE
50 #include <locale.h>
51 #endif
53 /* time between mpd updates [s] */
54 static const guint update_interval = 500;
56 #define BUFSIZE 1024
58 static const guint idle_interval = 500;
60 static mpdclient_t *mpd = NULL;
61 static gboolean connected = FALSE;
62 static GMainLoop *main_loop;
63 static guint reconnect_source_id, idle_source_id, update_source_id;
65 static const gchar *
66 error_msg(const gchar *msg)
67 {
68 gchar *p;
70 if ((p = strchr(msg, '}')) == NULL)
71 return msg;
73 do {
74 p++;
75 } while (*p == '}' || * p== ' ');
77 return p;
78 }
80 static void
81 error_callback(G_GNUC_UNUSED mpdclient_t *c, gint error, const gchar *_msg)
82 {
83 char *msg = utf8_to_locale(_msg);
85 error = error & 0xFF;
86 switch (error) {
87 case MPD_ERROR_CONNPORT:
88 case MPD_ERROR_NORESPONSE:
89 break;
90 case MPD_ERROR_ACK:
91 screen_status_printf("%s", error_msg(msg));
92 screen_bell();
93 break;
94 default:
95 screen_status_printf("%s", msg);
96 screen_bell();
97 doupdate();
98 connected = FALSE;
99 }
101 g_free(msg);
102 }
104 #ifndef NCMPC_MINI
105 static void
106 update_xterm_title(void)
107 {
108 static char title[BUFSIZE];
109 char tmp[BUFSIZE];
110 mpd_Status *status = NULL;
111 mpd_Song *song = NULL;
113 if (mpd) {
114 status = mpd->status;
115 song = mpd->song;
116 }
118 if (options.xterm_title_format && status && song &&
119 IS_PLAYING(status->state))
120 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
121 else
122 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
124 if (strncmp(title, tmp, BUFSIZE)) {
125 g_strlcpy(title, tmp, BUFSIZE);
126 set_xterm_title("%s", title);
127 }
128 }
129 #endif
131 static void
132 exit_and_cleanup(void)
133 {
134 screen_exit();
135 #ifndef NCMPC_MINI
136 set_xterm_title("");
137 #endif
138 printf("\n");
140 if (mpd) {
141 mpdclient_disconnect(mpd);
142 mpdclient_free(mpd);
143 }
144 }
146 static void
147 catch_sigint(G_GNUC_UNUSED int sig)
148 {
149 g_main_loop_quit(main_loop);
150 }
153 static void
154 catch_sigcont(G_GNUC_UNUSED int sig)
155 {
156 screen_resize(mpd);
157 }
159 void
160 sigstop(void)
161 {
162 def_prog_mode(); /* save the tty modes */
163 endwin(); /* end curses mode temporarily */
164 kill(0, SIGSTOP); /* issue SIGSTOP */
165 }
167 static guint timer_sigwinch_id;
169 static gboolean
170 timer_sigwinch(G_GNUC_UNUSED gpointer data)
171 {
172 /* the following causes the screen to flicker. There might be
173 better solutions, but I believe it isn't all that
174 important. */
176 endwin();
177 refresh();
178 screen_resize(mpd);
180 return FALSE;
181 }
183 static void
184 catch_sigwinch(G_GNUC_UNUSED int sig)
185 {
186 if (timer_sigwinch_id != 0)
187 g_source_remove(timer_sigwinch_id);
189 timer_sigwinch_id = g_timeout_add(100, timer_sigwinch, NULL);
190 }
192 static gboolean
193 timer_mpd_update(gpointer data);
195 /**
196 * This timer is installed when the connection to the MPD server is
197 * broken. It tries to recover by reconnecting periodically.
198 */
199 static gboolean
200 timer_reconnect(G_GNUC_UNUSED gpointer data)
201 {
202 int ret;
204 if (connected)
205 return FALSE;
207 screen_status_printf(_("Connecting to %s... [Press %s to abort]"),
208 options.host, get_key_names(CMD_QUIT,0) );
209 doupdate();
211 mpdclient_disconnect(mpd);
212 ret = mpdclient_connect(mpd,
213 options.host, options.port,
214 1.5,
215 options.password);
216 if (ret != 0) {
217 /* try again in 5 seconds */
218 g_timeout_add(5000, timer_reconnect, NULL);
219 return FALSE;
220 }
222 #ifndef NCMPC_MINI
223 /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
224 if (MPD_VERSION_LT(mpd, 0, 11, 0)) {
225 screen_status_printf(_("Error: MPD version %d.%d.%d is to old (%s needed)"),
226 mpd->connection->version[0],
227 mpd->connection->version[1],
228 mpd->connection->version[2],
229 "0.11.0");
230 mpdclient_disconnect(mpd);
231 doupdate();
233 /* try again after 30 seconds */
234 g_timeout_add(30000, timer_reconnect, NULL);
235 return FALSE;
236 }
237 #endif
239 screen_status_printf(_("Connected to %s"), options.host);
240 doupdate();
242 connected = TRUE;
244 /* update immediately */
245 g_timeout_add(1, timer_mpd_update, GINT_TO_POINTER(FALSE));
247 reconnect_source_id = 0;
248 return FALSE;
250 }
252 static gboolean
253 timer_mpd_update(gpointer data)
254 {
255 if (connected)
256 mpdclient_update(mpd);
257 else if (reconnect_source_id == 0)
258 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
259 NULL);
261 #ifndef NCMPC_MINI
262 if (options.enable_xterm_title)
263 update_xterm_title();
264 #endif
266 screen_update(mpd);
268 return GPOINTER_TO_INT(data);
269 }
271 /**
272 * This idle timer is invoked when the user hasn't typed a key for
273 * 500ms. It is used for delayed seeking.
274 */
275 static gboolean
276 timer_idle(G_GNUC_UNUSED gpointer data)
277 {
278 screen_idle(mpd);
279 return TRUE;
280 }
282 void begin_input_event(void)
283 {
284 /* remove the idle timeout; add it later with fresh interval */
285 g_source_remove(idle_source_id);
286 }
288 void end_input_event(void)
289 {
290 screen_update(mpd);
292 idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
293 }
295 int do_input_event(command_t cmd)
296 {
297 if (cmd == CMD_QUIT) {
298 g_main_loop_quit(main_loop);
299 return -1;
300 }
302 screen_cmd(mpd, cmd);
304 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN) {
305 /* make sure we don't update the volume yet */
306 g_source_remove(update_source_id);
307 update_source_id = g_timeout_add(update_interval,
308 timer_mpd_update,
309 GINT_TO_POINTER(TRUE));
310 }
312 return 0;
313 }
315 static gboolean
316 keyboard_event(G_GNUC_UNUSED GIOChannel *source,
317 G_GNUC_UNUSED GIOCondition condition,
318 G_GNUC_UNUSED gpointer data)
319 {
320 command_t cmd;
322 begin_input_event();
324 if ((cmd=get_keyboard_command()) != CMD_NONE)
325 if (do_input_event(cmd) != 0)
326 return FALSE;
328 end_input_event();
329 return TRUE;
330 }
332 #ifndef NCMPC_MINI
333 /**
334 * Check the configured key bindings for errors, and display a status
335 * message every 10 seconds.
336 */
337 static gboolean
338 timer_check_key_bindings(G_GNUC_UNUSED gpointer data)
339 {
340 char buf[256];
341 #ifdef ENABLE_KEYDEF_SCREEN
342 char comment[64];
343 #endif
344 gboolean key_error;
346 key_error = check_key_bindings(NULL, buf, sizeof(buf));
347 if (!key_error)
348 /* no error: disable this timer for the rest of this
349 process */
350 return FALSE;
352 #ifdef ENABLE_KEYDEF_SCREEN
353 g_strchomp(buf);
354 g_strlcat(buf, " (", sizeof(buf));
355 /* to translators: a key was bound twice in the key editor,
356 and this is a hint for the user what to press to correct
357 that */
358 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
359 get_key_names(CMD_SCREEN_KEYDEF, 0));
360 g_strlcat(buf, comment, sizeof(buf));
361 g_strlcat(buf, ")", sizeof(buf));
362 #endif
364 screen_status_printf("%s", buf);
366 doupdate();
367 return TRUE;
368 }
369 #endif
371 int
372 main(int argc, const char *argv[])
373 {
374 struct sigaction act;
375 #ifdef ENABLE_LOCALE
376 const char *charset = NULL;
377 #endif
378 GIOChannel *keyboard_channel;
379 #ifdef ENABLE_LIRC
380 int lirc_socket;
381 GIOChannel *lirc_channel = NULL;
382 #endif
384 #ifdef ENABLE_LOCALE
385 /* time and date formatting */
386 setlocale(LC_TIME,"");
387 /* care about sorting order etc */
388 setlocale(LC_COLLATE,"");
389 /* charset */
390 setlocale(LC_CTYPE,"");
391 /* initialize charset conversions */
392 charset = charset_init();
394 /* initialize i18n support */
395 #endif
397 #ifdef ENABLE_NLS
398 setlocale(LC_MESSAGES, "");
399 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
400 #ifdef ENABLE_LOCALE
401 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
402 #endif
403 textdomain(GETTEXT_PACKAGE);
404 #endif
406 /* initialize options */
407 options_init();
409 /* parse command line options - 1 pass get configuration files */
410 options_parse(argc, argv);
412 #ifndef NCMPC_MINI
413 /* read configuration */
414 read_configuration();
416 /* check key bindings */
417 check_key_bindings(NULL, NULL, 0);
418 #endif
420 /* parse command line options - 2 pass */
421 options_parse(argc, argv);
423 /* setup signal behavior - SIGINT */
424 sigemptyset(&act.sa_mask);
425 act.sa_flags = 0;
426 act.sa_handler = catch_sigint;
427 if (sigaction(SIGINT, &act, NULL) < 0) {
428 perror("signal");
429 exit(EXIT_FAILURE);
430 }
432 /* setup signal behavior - SIGTERM */
434 act.sa_handler = catch_sigint;
435 if (sigaction(SIGTERM, &act, NULL) < 0) {
436 perror("sigaction()");
437 exit(EXIT_FAILURE);
438 }
440 /* setup signal behavior - SIGCONT */
442 act.sa_handler = catch_sigcont;
443 if (sigaction(SIGCONT, &act, NULL) < 0) {
444 perror("sigaction(SIGCONT)");
445 exit(EXIT_FAILURE);
446 }
448 /* setup signal behaviour - SIGHUP*/
450 act.sa_handler = catch_sigint;
451 if (sigaction(SIGHUP, &act, NULL) < 0) {
452 perror("sigaction(SIGHUP)");
453 exit(EXIT_FAILURE);
454 }
456 /* setup SIGWINCH */
458 act.sa_flags = SA_RESTART;
459 act.sa_handler = catch_sigwinch;
460 if (sigaction(SIGWINCH, &act, NULL) < 0) {
461 perror("sigaction(SIGWINCH)");
462 exit(EXIT_FAILURE);
463 }
465 /* ignore SIGPIPE */
467 act.sa_handler = SIG_IGN;
468 if (sigaction(SIGPIPE, &act, NULL) < 0) {
469 perror("sigaction(SIGPIPE)");
470 exit(EXIT_FAILURE);
471 }
473 ncu_init();
475 #ifdef ENABLE_LYRICS_SCREEN
476 lyrics_init();
477 #endif
479 /* create mpdclient instance */
480 mpd = mpdclient_new();
481 mpdclient_install_error_callback(mpd, error_callback);
483 /* initialize curses */
484 screen_init(mpd);
486 /* the main loop */
487 main_loop = g_main_loop_new(NULL, FALSE);
489 /* watch out for keyboard input */
490 keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
491 g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
493 #ifdef ENABLE_LIRC
494 /* watch out for lirc input */
495 lirc_socket = ncmpc_lirc_open();
496 if (lirc_socket >= 0) {
497 lirc_channel = g_io_channel_unix_new(lirc_socket);
498 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
499 }
500 #endif
502 /* attempt to connect */
503 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
505 update_source_id = g_timeout_add(update_interval,
506 timer_mpd_update,
507 GINT_TO_POINTER(TRUE));
508 #ifndef NCMPC_MINI
509 g_timeout_add(10000, timer_check_key_bindings, NULL);
510 #endif
511 idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
513 screen_paint(mpd);
515 g_main_loop_run(main_loop);
517 /* cleanup */
519 g_main_loop_unref(main_loop);
520 g_io_channel_unref(keyboard_channel);
522 #ifdef ENABLE_LIRC
523 if (lirc_socket >= 0)
524 g_io_channel_unref(lirc_channel);
525 ncmpc_lirc_close();
526 #endif
528 exit_and_cleanup();
530 #ifdef ENABLE_LYRICS_SCREEN
531 lyrics_deinit();
532 #endif
534 ncu_deinit();
535 options_deinit();
537 return 0;
538 }