Code

main: free timers on exit
[ncmpc.git] / src / main.c
1 /* ncmpc (Ncurses MPD Client)
2  * (c) 2004-2009 The Music Player Daemon Project
3  * Project homepage: http://musicpd.org
4  
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 #ifndef NCMPC_MINI
66 static guint check_key_bindings_source_id;
67 #endif
69 static const gchar *
70 error_msg(const gchar *msg)
71 {
72         gchar *p;
74         if ((p = strchr(msg, '}')) == NULL)
75                 return msg;
77         do {
78                 p++;
79         } while (*p == '}' || * p== ' ');
81         return p;
82 }
84 static void
85 error_callback(G_GNUC_UNUSED mpdclient_t *c, gint error, const gchar *_msg)
86 {
87         char *msg = utf8_to_locale(_msg);
89         error = error & 0xFF;
90         switch (error) {
91         case MPD_ERROR_CONNPORT:
92         case MPD_ERROR_NORESPONSE:
93                 break;
94         case MPD_ERROR_ACK:
95                 screen_status_printf("%s", error_msg(msg));
96                 screen_bell();
97                 break;
98         default:
99                 screen_status_printf("%s", msg);
100                 screen_bell();
101                 doupdate();
102                 connected = FALSE;
103         }
105         g_free(msg);
108 #ifndef NCMPC_MINI
109 static void
110 update_xterm_title(void)
112         static char title[BUFSIZE];
113         char tmp[BUFSIZE];
114         mpd_Status *status = NULL;
115         mpd_Song *song = NULL;
117         if (mpd) {
118                 status = mpd->status;
119                 song = mpd->song;
120         }
122         if (options.xterm_title_format && status && song &&
123             IS_PLAYING(status->state))
124                 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
125         else
126                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
128         if (strncmp(title, tmp, BUFSIZE)) {
129                 g_strlcpy(title, tmp, BUFSIZE);
130                 set_xterm_title("%s", title);
131         }
133 #endif
135 static void
136 exit_and_cleanup(void)
138         screen_exit();
139 #ifndef NCMPC_MINI
140         set_xterm_title("");
141 #endif
142         printf("\n");
144         if (mpd) {
145                 mpdclient_disconnect(mpd);
146                 mpdclient_free(mpd);
147         }
150 static void
151 catch_sigint(G_GNUC_UNUSED int sig)
153         g_main_loop_quit(main_loop);
157 static void
158 catch_sigcont(G_GNUC_UNUSED int sig)
160         screen_resize(mpd);
163 void
164 sigstop(void)
166   def_prog_mode();  /* save the tty modes */
167   endwin();         /* end curses mode temporarily */
168   kill(0, SIGSTOP); /* issue SIGSTOP */
171 static guint timer_sigwinch_id;
173 static gboolean
174 timer_sigwinch(G_GNUC_UNUSED gpointer data)
176         /* the following causes the screen to flicker.  There might be
177            better solutions, but I believe it isn't all that
178            important. */
180         endwin();
181         refresh();
182         screen_resize(mpd);
184         return FALSE;
187 static void
188 catch_sigwinch(G_GNUC_UNUSED int sig)
190         if (timer_sigwinch_id != 0)
191                 g_source_remove(timer_sigwinch_id);
193         timer_sigwinch_id = g_timeout_add(100, timer_sigwinch, NULL);
196 static gboolean
197 timer_mpd_update(gpointer data);
199 /**
200  * This timer is installed when the connection to the MPD server is
201  * broken.  It tries to recover by reconnecting periodically.
202  */
203 static gboolean
204 timer_reconnect(G_GNUC_UNUSED gpointer data)
206         int ret;
208         if (connected)
209                 return FALSE;
211         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
212                              options.host, get_key_names(CMD_QUIT,0) );
213         doupdate();
215         mpdclient_disconnect(mpd);
216         ret = mpdclient_connect(mpd,
217                                 options.host, options.port,
218                                 1.5,
219                                 options.password);
220         if (ret != 0) {
221                 /* try again in 5 seconds */
222                 g_timeout_add(5000, timer_reconnect, NULL);
223                 return FALSE;
224         }
226 #ifndef NCMPC_MINI
227         /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
228         if (MPD_VERSION_LT(mpd, 0, 11, 0)) {
229                 screen_status_printf(_("Error: MPD version %d.%d.%d is to old (%s needed)"),
230                                      mpd->connection->version[0],
231                                      mpd->connection->version[1],
232                                      mpd->connection->version[2],
233                                      "0.11.0");
234                 mpdclient_disconnect(mpd);
235                 doupdate();
237                 /* try again after 30 seconds */
238                 g_timeout_add(30000, timer_reconnect, NULL);
239                 return FALSE;
240         }
241 #endif
243         screen_status_printf(_("Connected to %s"), options.host);
244         doupdate();
246         connected = TRUE;
248         /* update immediately */
249         g_timeout_add(1, timer_mpd_update, GINT_TO_POINTER(FALSE));
251         reconnect_source_id = 0;
252         return FALSE;
256 static gboolean
257 timer_mpd_update(gpointer data)
259         if (connected)
260                 mpdclient_update(mpd);
261         else if (reconnect_source_id == 0)
262                 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
263                                                     NULL);
265 #ifndef NCMPC_MINI
266         if (options.enable_xterm_title)
267                 update_xterm_title();
268 #endif
270         screen_update(mpd);
272         return GPOINTER_TO_INT(data);
275 /**
276  * This idle timer is invoked when the user hasn't typed a key for
277  * 500ms.  It is used for delayed seeking.
278  */
279 static gboolean
280 timer_idle(G_GNUC_UNUSED gpointer data)
282         screen_idle(mpd);
283         return TRUE;
286 void begin_input_event(void)
288         /* remove the idle timeout; add it later with fresh interval */
289         g_source_remove(idle_source_id);
292 void end_input_event(void)
294         screen_update(mpd);
296         idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
299 int do_input_event(command_t cmd)
301         if (cmd == CMD_QUIT) {
302                 g_main_loop_quit(main_loop);
303                 return -1;
304         }
306         screen_cmd(mpd, cmd);
308         if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN) {
309                 /* make sure we don't update the volume yet */
310                 g_source_remove(update_source_id);
311                 update_source_id = g_timeout_add(update_interval,
312                                                  timer_mpd_update,
313                                                  GINT_TO_POINTER(TRUE));
314         }
316         return 0;
319 static gboolean
320 keyboard_event(G_GNUC_UNUSED GIOChannel *source,
321                G_GNUC_UNUSED GIOCondition condition,
322                G_GNUC_UNUSED gpointer data)
324         command_t cmd;
326         begin_input_event();
328         if ((cmd=get_keyboard_command()) != CMD_NONE)
329                 if (do_input_event(cmd) != 0)
330                         return FALSE;
332         end_input_event();
333         return TRUE;
336 #ifndef NCMPC_MINI
337 /**
338  * Check the configured key bindings for errors, and display a status
339  * message every 10 seconds.
340  */
341 static gboolean
342 timer_check_key_bindings(G_GNUC_UNUSED gpointer data)
344         char buf[256];
345 #ifdef ENABLE_KEYDEF_SCREEN
346         char comment[64];
347 #endif
348         gboolean key_error;
350         key_error = check_key_bindings(NULL, buf, sizeof(buf));
351         if (!key_error) {
352                 /* no error: disable this timer for the rest of this
353                    process */
354                 check_key_bindings_source_id = 0;
355                 return FALSE;
356         }
358 #ifdef ENABLE_KEYDEF_SCREEN
359         g_strchomp(buf);
360         g_strlcat(buf, " (", sizeof(buf));
361         /* to translators: a key was bound twice in the key editor,
362            and this is a hint for the user what to press to correct
363            that */
364         g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
365                    get_key_names(CMD_SCREEN_KEYDEF, 0));
366         g_strlcat(buf, comment, sizeof(buf));
367         g_strlcat(buf, ")", sizeof(buf));
368 #endif
370         screen_status_printf("%s", buf);
372         doupdate();
373         return TRUE;
375 #endif
377 int
378 main(int argc, const char *argv[])
380         struct sigaction act;
381 #ifdef ENABLE_LOCALE
382         const char *charset = NULL;
383 #endif
384         GIOChannel *keyboard_channel;
385 #ifdef ENABLE_LIRC
386         int lirc_socket;
387         GIOChannel *lirc_channel = NULL;
388 #endif
390 #ifdef ENABLE_LOCALE
391         /* time and date formatting */
392         setlocale(LC_TIME,"");
393         /* care about sorting order etc */
394         setlocale(LC_COLLATE,"");
395         /* charset */
396         setlocale(LC_CTYPE,"");
397         /* initialize charset conversions */
398         charset = charset_init();
400         /* initialize i18n support */
401 #endif
403 #ifdef ENABLE_NLS
404         setlocale(LC_MESSAGES, "");
405         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
406 #ifdef ENABLE_LOCALE
407         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
408 #endif
409         textdomain(GETTEXT_PACKAGE);
410 #endif
412         /* initialize options */
413         options_init();
415         /* parse command line options - 1 pass get configuration files */
416         options_parse(argc, argv);
418 #ifndef NCMPC_MINI
419         /* read configuration */
420         read_configuration();
422         /* check key bindings */
423         check_key_bindings(NULL, NULL, 0);
424 #endif
426         /* parse command line options - 2 pass */
427         options_parse(argc, argv);
429         /* setup signal behavior - SIGINT */
430         sigemptyset(&act.sa_mask);
431         act.sa_flags = 0;
432         act.sa_handler = catch_sigint;
433         if (sigaction(SIGINT, &act, NULL) < 0) {
434                 perror("signal");
435                 exit(EXIT_FAILURE);
436         }
438         /* setup signal behavior - SIGTERM */
440         act.sa_handler = catch_sigint;
441         if (sigaction(SIGTERM, &act, NULL) < 0) {
442                 perror("sigaction()");
443                 exit(EXIT_FAILURE);
444         }
446         /* setup signal behavior - SIGCONT */
448         act.sa_handler = catch_sigcont;
449         if (sigaction(SIGCONT, &act, NULL) < 0) {
450                 perror("sigaction(SIGCONT)");
451                 exit(EXIT_FAILURE);
452         }
454         /* setup signal behaviour - SIGHUP*/
456         act.sa_handler = catch_sigint;
457         if (sigaction(SIGHUP, &act, NULL) < 0) {
458                 perror("sigaction(SIGHUP)");
459                 exit(EXIT_FAILURE);
460         }
462         /* setup SIGWINCH */
464         act.sa_flags = SA_RESTART;
465         act.sa_handler = catch_sigwinch;
466         if (sigaction(SIGWINCH, &act, NULL) < 0) {
467                 perror("sigaction(SIGWINCH)");
468                 exit(EXIT_FAILURE);
469         }
471         /* ignore SIGPIPE */
473         act.sa_handler = SIG_IGN;
474         if (sigaction(SIGPIPE, &act, NULL) < 0) {
475                 perror("sigaction(SIGPIPE)");
476                 exit(EXIT_FAILURE);
477         }
479         ncu_init();
481 #ifdef ENABLE_LYRICS_SCREEN
482         lyrics_init();
483 #endif
485         /* create mpdclient instance */
486         mpd = mpdclient_new();
487         mpdclient_install_error_callback(mpd, error_callback);
489         /* initialize curses */
490         screen_init(mpd);
492         /* the main loop */
493         main_loop = g_main_loop_new(NULL, FALSE);
495         /* watch out for keyboard input */
496         keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
497         g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
499 #ifdef ENABLE_LIRC
500         /* watch out for lirc input */
501         lirc_socket = ncmpc_lirc_open();
502         if (lirc_socket >= 0) {
503                 lirc_channel = g_io_channel_unix_new(lirc_socket);
504                 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
505         }
506 #endif
508         /* attempt to connect */
509         reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
511         update_source_id = g_timeout_add(update_interval,
512                                          timer_mpd_update,
513                                          GINT_TO_POINTER(TRUE));
514 #ifndef NCMPC_MINI
515         check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
516 #endif
517         idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
519         screen_paint(mpd);
521         g_main_loop_run(main_loop);
523         /* cleanup */
525         g_source_remove(update_source_id);
526         g_source_remove(idle_source_id);
528 #ifndef NCMPC_MINI
529         if (check_key_bindings_source_id != 0)
530                 g_source_remove(check_key_bindings_source_id);
531 #endif
533         g_main_loop_unref(main_loop);
534         g_io_channel_unref(keyboard_channel);
536 #ifdef ENABLE_LIRC
537         if (lirc_socket >= 0)
538                 g_io_channel_unref(lirc_channel);
539         ncmpc_lirc_close();
540 #endif
542         exit_and_cleanup();
544 #ifdef ENABLE_LYRICS_SCREEN
545         lyrics_deinit();
546 #endif
548         ncu_deinit();
549         options_deinit();
551         return 0;