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po: updated PO template
[ncmpc.git] / src / main.c
1 /*
2  * (c) 2004 by Kalle Wallin <kaw@linux.se>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16  *
17  */
19 #include "config.h"
20 #include "ncmpc.h"
21 #include "mpdclient.h"
22 #include "charset.h"
23 #include "options.h"
24 #include "command.h"
25 #include "ncu.h"
26 #include "screen.h"
27 #include "screen_utils.h"
28 #include "strfsong.h"
29 #include "i18n.h"
30 #include "gcc.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 /* time between mpd updates [s] */
50 static const guint update_interval = 500;
52 #define BUFSIZE 1024
54 static const guint idle_interval = 500;
56 static mpdclient_t *mpd = NULL;
57 static gboolean connected = FALSE;
58 static GMainLoop *main_loop;
59 static guint reconnect_source_id, idle_source_id, update_source_id;
61 static const gchar *
62 error_msg(const gchar *msg)
63 {
64         gchar *p;
66         if ((p = strchr(msg, '}')) == NULL)
67                 return msg;
69         do {
70                 p++;
71         } while (*p == '}' || * p== ' ');
73         return p;
74 }
76 static void
77 error_callback(mpd_unused mpdclient_t *c, gint error, const gchar *_msg)
78 {
79         char *msg = utf8_to_locale(_msg);
81         error = error & 0xFF;
82         switch (error) {
83         case MPD_ERROR_CONNPORT:
84         case MPD_ERROR_NORESPONSE:
85                 break;
86         case MPD_ERROR_ACK:
87                 screen_status_printf("%s", error_msg(msg));
88                 screen_bell();
89                 break;
90         default:
91                 screen_status_printf("%s", msg);
92                 screen_bell();
93                 doupdate();
94                 connected = FALSE;
95         }
97         g_free(msg);
98 }
100 #ifndef NCMPC_MINI
101 static void
102 update_xterm_title(void)
104         static char title[BUFSIZE];
105         char tmp[BUFSIZE];
106         mpd_Status *status = NULL;
107         mpd_Song *song = NULL;
109         if (mpd) {
110                 status = mpd->status;
111                 song = mpd->song;
112         }
114         if (options.xterm_title_format && status && song &&
115             IS_PLAYING(status->state))
116                 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
117         else
118                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
120         if (strncmp(title, tmp, BUFSIZE)) {
121                 g_strlcpy(title, tmp, BUFSIZE);
122                 set_xterm_title("%s", title);
123         }
125 #endif
127 static void
128 exit_and_cleanup(void)
130         screen_exit();
131 #ifndef NCMPC_MINI
132         set_xterm_title("");
133 #endif
134         printf("\n");
136         if (mpd) {
137                 mpdclient_disconnect(mpd);
138                 mpdclient_free(mpd);
139         }
141         g_free(options.host);
142         g_free(options.password);
143         g_free(options.list_format);
144         g_free(options.status_format);
145 #ifndef NCMPC_MINI
146         g_free(options.scroll_sep);
147 #endif
150 static void
151 catch_sigint(mpd_unused int sig)
153         g_main_loop_quit(main_loop);
157 static void
158 catch_sigcont(mpd_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(mpd_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(mpd_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(mpd_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 (0.11.0 needed).\n"),
230                                      mpd->connection->version[0],
231                                      mpd->connection->version[1],
232                                      mpd->connection->version[2]);
233                 mpdclient_disconnect(mpd);
234                 doupdate();
236                 /* try again after 30 seconds */
237                 g_timeout_add(30000, timer_reconnect, NULL);
238                 return FALSE;
239         }
240 #endif
242         screen_status_printf(_("Connected to %s!"), options.host);
243         doupdate();
245         connected = TRUE;
247         /* update immediately */
248         g_timeout_add(1, timer_mpd_update, GINT_TO_POINTER(FALSE));
250         reconnect_source_id = 0;
251         return FALSE;
255 static gboolean
256 timer_mpd_update(gpointer data)
258         if (connected)
259                 mpdclient_update(mpd);
260         else if (reconnect_source_id == 0)
261                 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
262                                                     NULL);
264 #ifndef NCMPC_MINI
265         if (options.enable_xterm_title)
266                 update_xterm_title();
267 #endif
269         screen_update(mpd);
271         return GPOINTER_TO_INT(data);
274 /**
275  * This idle timer is invoked when the user hasn't typed a key for
276  * 500ms.  It is used for delayed seeking.
277  */
278 static gboolean
279 timer_idle(mpd_unused gpointer data)
281         screen_idle(mpd);
282         return TRUE;
285 void begin_input_event(void)
287         /* remove the idle timeout; add it later with fresh interval */
288         g_source_remove(idle_source_id);
291 void end_input_event(void)
293         screen_update(mpd);
295         idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
298 int do_input_event(command_t cmd)
300         if (cmd == CMD_QUIT) {
301                 g_main_loop_quit(main_loop);
302                 return -1;
303         }
305         screen_cmd(mpd, cmd);
307         if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN) {
308                 /* make sure we dont update the volume yet */
309                 g_source_remove(update_source_id);
310                 update_source_id = g_timeout_add(update_interval,
311                                                  timer_mpd_update,
312                                                  GINT_TO_POINTER(TRUE));
313         }
315         return 0;
318 static gboolean
319 keyboard_event(mpd_unused GIOChannel *source,
320                mpd_unused GIOCondition condition, mpd_unused gpointer data)
322         command_t cmd;
324         begin_input_event();
326         if ((cmd=get_keyboard_command()) != CMD_NONE)
327                 if (do_input_event(cmd) != 0)
328                         return FALSE;
330         end_input_event();
331         return TRUE;
334 #ifndef NCMPC_MINI
335 /**
336  * Check the configured key bindings for errors, and display a status
337  * message every 10 seconds.
338  */
339 static gboolean
340 timer_check_key_bindings(mpd_unused gpointer data)
342         char buf[256];
343         gboolean key_error;
345         key_error = check_key_bindings(NULL, buf, sizeof(buf));
346         if (!key_error)
347                 /* no error: disable this timer for the rest of this
348                    process */
349                 return FALSE;
351         screen_status_printf("%s", buf);
352         doupdate();
353         return TRUE;
355 #endif
357 int
358 main(int argc, const char *argv[])
360         struct sigaction act;
361 #if defined(HAVE_LOCALE_H) && !defined(NCMPC_MINI)
362         const char *charset = NULL;
363 #endif
364         GIOChannel *keyboard_channel;
365 #ifdef ENABLE_LIRC
366         int lirc_socket;
367         GIOChannel *lirc_channel = NULL;
368 #endif
370 #if defined(HAVE_LOCALE_H) && !defined(NCMPC_MINI)
371         /* time and date formatting */
372         setlocale(LC_TIME,"");
373         /* care about sorting order etc */
374         setlocale(LC_COLLATE,"");
375         /* charset */
376         setlocale(LC_CTYPE,"");
377         /* initialize charset conversions */
378         charset = charset_init();
380         /* initialize i18n support */
381 #ifdef ENABLE_NLS
382         setlocale(LC_MESSAGES, "");
383         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
384         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
385         textdomain(GETTEXT_PACKAGE);
386 #endif
387 #endif
389         /* initialize options */
390         options_init();
392         /* parse command line options - 1 pass get configuration files */
393         options_parse(argc, argv);
395         /* read configuration */
396 #ifndef NCMPC_MINI
397         read_configuration();
398 #endif
400         /* check key bindings */
401         check_key_bindings(NULL, NULL, 0);
403         /* parse command line options - 2 pass */
404         options_parse(argc, argv);
406         /* setup signal behavior - SIGINT */
407         sigemptyset(&act.sa_mask);
408         act.sa_flags = 0;
409         act.sa_handler = catch_sigint;
410         if (sigaction(SIGINT, &act, NULL) < 0) {
411                 perror("signal");
412                 exit(EXIT_FAILURE);
413         }
415         /* setup signal behavior - SIGTERM */
417         act.sa_handler = catch_sigint;
418         if (sigaction(SIGTERM, &act, NULL) < 0) {
419                 perror("sigaction()");
420                 exit(EXIT_FAILURE);
421         }
423         /* setup signal behavior - SIGCONT */
425         act.sa_handler = catch_sigcont;
426         if (sigaction(SIGCONT, &act, NULL) < 0) {
427                 perror("sigaction(SIGCONT)");
428                 exit(EXIT_FAILURE);
429         }
431         /* setup signal behaviour - SIGHUP*/
433         act.sa_handler = catch_sigint;
434         if (sigaction(SIGHUP, &act, NULL) < 0) {
435                 perror("sigaction(SIGHUP)");
436                 exit(EXIT_FAILURE);
437         }
439         /* setup SIGWINCH */
441         act.sa_flags = SA_RESTART;
442         act.sa_handler = catch_sigwinch;
443         if (sigaction(SIGWINCH, &act, NULL) < 0) {
444                 perror("sigaction(SIGWINCH)");
445                 exit(EXIT_FAILURE);
446         }
448         /* ignore SIGPIPE */
450         act.sa_handler = SIG_IGN;
451         if (sigaction(SIGPIPE, &act, NULL) < 0) {
452                 perror("sigaction(SIGPIPE)");
453                 exit(EXIT_FAILURE);
454         }
456         ncu_init();
458 #ifdef ENABLE_LYRICS_SCREEN
459         lyrics_init();
460 #endif
462         /* create mpdclient instance */
463         mpd = mpdclient_new();
464         mpdclient_install_error_callback(mpd, error_callback);
466         /* initialize curses */
467         screen_init(mpd);
469         /* the main loop */
470         main_loop = g_main_loop_new(NULL, FALSE);
472         /* watch out for keyboard input */
473         keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
474         g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
476 #ifdef ENABLE_LIRC
477         /* watch out for lirc input */
478         lirc_socket = ncmpc_lirc_open();
479         if (lirc_socket >= 0) {
480                 lirc_channel = g_io_channel_unix_new(lirc_socket);
481                 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
482         }
483 #endif
485         /* attempt to connect */
486         reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
488         update_source_id = g_timeout_add(update_interval,
489                                          timer_mpd_update,
490                                          GINT_TO_POINTER(TRUE));
491 #ifndef NCMPC_MINI
492         g_timeout_add(10000, timer_check_key_bindings, NULL);
493 #endif
494         idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
496         screen_paint(mpd);
498         g_main_loop_run(main_loop);
500         /* cleanup */
502         g_main_loop_unref(main_loop);
503         g_io_channel_unref(keyboard_channel);
505 #ifdef ENABLE_LIRC
506         if (lirc_socket >= 0)
507                 g_io_channel_unref(lirc_channel);
508         ncmpc_lirc_close();
509 #endif
511         exit_and_cleanup();
512         ncu_deinit();
514         return 0;