Code

752ccdfbb6c1c4827bd85b9bd46a5627d16a2f77
[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"
31 #ifndef NCMPC_MINI
32 #include "conf.h"
33 #endif
35 #ifdef ENABLE_LYRICS_SCREEN
36 #include "lyrics.h"
37 #endif
39 #ifdef ENABLE_LIRC
40 #include "lirc.h"
41 #endif
43 #include <stdlib.h>
44 #include <unistd.h>
45 #include <signal.h>
46 #include <string.h>
48 /* time between mpd updates [s] */
49 static const guint update_interval = 500;
51 #define BUFSIZE 1024
53 static const guint idle_interval = 500;
55 static mpdclient_t *mpd = NULL;
56 static gboolean connected = FALSE;
57 static GMainLoop *main_loop;
58 static guint reconnect_source_id, idle_source_id, update_source_id;
60 static const gchar *
61 error_msg(const gchar *msg)
62 {
63         gchar *p;
65         if ((p = strchr(msg, '}')) == NULL)
66                 return msg;
68         do {
69                 p++;
70         } while (*p == '}' || * p== ' ');
72         return p;
73 }
75 static void
76 error_callback(G_GNUC_UNUSED mpdclient_t *c, gint error, const gchar *_msg)
77 {
78         char *msg = utf8_to_locale(_msg);
80         error = error & 0xFF;
81         switch (error) {
82         case MPD_ERROR_CONNPORT:
83         case MPD_ERROR_NORESPONSE:
84                 break;
85         case MPD_ERROR_ACK:
86                 screen_status_printf("%s", error_msg(msg));
87                 screen_bell();
88                 break;
89         default:
90                 screen_status_printf("%s", msg);
91                 screen_bell();
92                 doupdate();
93                 connected = FALSE;
94         }
96         g_free(msg);
97 }
99 #ifndef NCMPC_MINI
100 static void
101 update_xterm_title(void)
103         static char title[BUFSIZE];
104         char tmp[BUFSIZE];
105         mpd_Status *status = NULL;
106         mpd_Song *song = NULL;
108         if (mpd) {
109                 status = mpd->status;
110                 song = mpd->song;
111         }
113         if (options.xterm_title_format && status && song &&
114             IS_PLAYING(status->state))
115                 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
116         else
117                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
119         if (strncmp(title, tmp, BUFSIZE)) {
120                 g_strlcpy(title, tmp, BUFSIZE);
121                 set_xterm_title("%s", title);
122         }
124 #endif
126 static void
127 exit_and_cleanup(void)
129         screen_exit();
130 #ifndef NCMPC_MINI
131         set_xterm_title("");
132 #endif
133         printf("\n");
135         if (mpd) {
136                 mpdclient_disconnect(mpd);
137                 mpdclient_free(mpd);
138         }
140         g_free(options.host);
141         g_free(options.password);
142         g_free(options.list_format);
143         g_free(options.status_format);
144 #ifndef NCMPC_MINI
145         g_free(options.scroll_sep);
146 #endif
149 static void
150 catch_sigint(G_GNUC_UNUSED int sig)
152         g_main_loop_quit(main_loop);
156 static void
157 catch_sigcont(G_GNUC_UNUSED int sig)
159         screen_resize(mpd);
162 void
163 sigstop(void)
165   def_prog_mode();  /* save the tty modes */
166   endwin();         /* end curses mode temporarily */
167   kill(0, SIGSTOP); /* issue SIGSTOP */
170 static guint timer_sigwinch_id;
172 static gboolean
173 timer_sigwinch(G_GNUC_UNUSED gpointer data)
175         /* the following causes the screen to flicker.  There might be
176            better solutions, but I believe it isn't all that
177            important. */
179         endwin();
180         refresh();
181         screen_resize(mpd);
183         return FALSE;
186 static void
187 catch_sigwinch(G_GNUC_UNUSED int sig)
189         if (timer_sigwinch_id != 0)
190                 g_source_remove(timer_sigwinch_id);
192         timer_sigwinch_id = g_timeout_add(100, timer_sigwinch, NULL);
195 static gboolean
196 timer_mpd_update(gpointer data);
198 /**
199  * This timer is installed when the connection to the MPD server is
200  * broken.  It tries to recover by reconnecting periodically.
201  */
202 static gboolean
203 timer_reconnect(G_GNUC_UNUSED gpointer data)
205         int ret;
207         if (connected)
208                 return FALSE;
210         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
211                              options.host, get_key_names(CMD_QUIT,0) );
212         doupdate();
214         mpdclient_disconnect(mpd);
215         ret = mpdclient_connect(mpd,
216                                 options.host, options.port,
217                                 1.5,
218                                 options.password);
219         if (ret != 0) {
220                 /* try again in 5 seconds */
221                 g_timeout_add(5000, timer_reconnect, NULL);
222                 return FALSE;
223         }
225 #ifndef NCMPC_MINI
226         /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
227         if (MPD_VERSION_LT(mpd, 0, 11, 0)) {
228                 screen_status_printf(_("Error: MPD version %d.%d.%d is to old (%s needed)"),
229                                      mpd->connection->version[0],
230                                      mpd->connection->version[1],
231                                      mpd->connection->version[2],
232                                      "0.11.0");
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(G_GNUC_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(G_GNUC_UNUSED GIOChannel *source,
320                G_GNUC_UNUSED GIOCondition condition,
321                G_GNUC_UNUSED gpointer data)
323         command_t cmd;
325         begin_input_event();
327         if ((cmd=get_keyboard_command()) != CMD_NONE)
328                 if (do_input_event(cmd) != 0)
329                         return FALSE;
331         end_input_event();
332         return TRUE;
335 #ifndef NCMPC_MINI
336 /**
337  * Check the configured key bindings for errors, and display a status
338  * message every 10 seconds.
339  */
340 static gboolean
341 timer_check_key_bindings(G_GNUC_UNUSED gpointer data)
343         char buf[256];
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         screen_status_printf("%s", buf);
353         doupdate();
354         return TRUE;
356 #endif
358 int
359 main(int argc, const char *argv[])
361         struct sigaction act;
362 #if defined(HAVE_LOCALE_H) && !defined(NCMPC_MINI)
363         const char *charset = NULL;
364 #endif
365         GIOChannel *keyboard_channel;
366 #ifdef ENABLE_LIRC
367         int lirc_socket;
368         GIOChannel *lirc_channel = NULL;
369 #endif
371 #if defined(HAVE_LOCALE_H) && !defined(NCMPC_MINI)
372         /* time and date formatting */
373         setlocale(LC_TIME,"");
374         /* care about sorting order etc */
375         setlocale(LC_COLLATE,"");
376         /* charset */
377         setlocale(LC_CTYPE,"");
378         /* initialize charset conversions */
379         charset = charset_init();
381         /* initialize i18n support */
382 #ifdef ENABLE_NLS
383         setlocale(LC_MESSAGES, "");
384         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
385         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
386         textdomain(GETTEXT_PACKAGE);
387 #endif
388 #endif
390         /* initialize options */
391         options_init();
393         /* parse command line options - 1 pass get configuration files */
394         options_parse(argc, argv);
396 #ifndef NCMPC_MINI
397         /* read configuration */
398         read_configuration();
400         /* check key bindings */
401         check_key_bindings(NULL, NULL, 0);
402 #endif
404         /* parse command line options - 2 pass */
405         options_parse(argc, argv);
407         /* setup signal behavior - SIGINT */
408         sigemptyset(&act.sa_mask);
409         act.sa_flags = 0;
410         act.sa_handler = catch_sigint;
411         if (sigaction(SIGINT, &act, NULL) < 0) {
412                 perror("signal");
413                 exit(EXIT_FAILURE);
414         }
416         /* setup signal behavior - SIGTERM */
418         act.sa_handler = catch_sigint;
419         if (sigaction(SIGTERM, &act, NULL) < 0) {
420                 perror("sigaction()");
421                 exit(EXIT_FAILURE);
422         }
424         /* setup signal behavior - SIGCONT */
426         act.sa_handler = catch_sigcont;
427         if (sigaction(SIGCONT, &act, NULL) < 0) {
428                 perror("sigaction(SIGCONT)");
429                 exit(EXIT_FAILURE);
430         }
432         /* setup signal behaviour - SIGHUP*/
434         act.sa_handler = catch_sigint;
435         if (sigaction(SIGHUP, &act, NULL) < 0) {
436                 perror("sigaction(SIGHUP)");
437                 exit(EXIT_FAILURE);
438         }
440         /* setup SIGWINCH */
442         act.sa_flags = SA_RESTART;
443         act.sa_handler = catch_sigwinch;
444         if (sigaction(SIGWINCH, &act, NULL) < 0) {
445                 perror("sigaction(SIGWINCH)");
446                 exit(EXIT_FAILURE);
447         }
449         /* ignore SIGPIPE */
451         act.sa_handler = SIG_IGN;
452         if (sigaction(SIGPIPE, &act, NULL) < 0) {
453                 perror("sigaction(SIGPIPE)");
454                 exit(EXIT_FAILURE);
455         }
457         ncu_init();
459 #ifdef ENABLE_LYRICS_SCREEN
460         lyrics_init();
461 #endif
463         /* create mpdclient instance */
464         mpd = mpdclient_new();
465         mpdclient_install_error_callback(mpd, error_callback);
467         /* initialize curses */
468         screen_init(mpd);
470         /* the main loop */
471         main_loop = g_main_loop_new(NULL, FALSE);
473         /* watch out for keyboard input */
474         keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
475         g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
477 #ifdef ENABLE_LIRC
478         /* watch out for lirc input */
479         lirc_socket = ncmpc_lirc_open();
480         if (lirc_socket >= 0) {
481                 lirc_channel = g_io_channel_unix_new(lirc_socket);
482                 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
483         }
484 #endif
486         /* attempt to connect */
487         reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
489         update_source_id = g_timeout_add(update_interval,
490                                          timer_mpd_update,
491                                          GINT_TO_POINTER(TRUE));
492 #ifndef NCMPC_MINI
493         g_timeout_add(10000, timer_check_key_bindings, NULL);
494 #endif
495         idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
497         screen_paint(mpd);
499         g_main_loop_run(main_loop);
501         /* cleanup */
503         g_main_loop_unref(main_loop);
504         g_io_channel_unref(keyboard_channel);
506 #ifdef ENABLE_LIRC
507         if (lirc_socket >= 0)
508                 g_io_channel_unref(lirc_channel);
509         ncmpc_lirc_close();
510 #endif
512         exit_and_cleanup();
513         ncu_deinit();
515         return 0;