Code

d4c5168a251694d539964e9ff70adf82bc6fd545
[ncmpc.git] / src / main.c
1 /* ncmpc (Ncurses MPD Client)
2  * (c) 2004-2017 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.
9  *
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.
14  *
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 "callbacks.h"
24 #include "charset.h"
25 #include "options.h"
26 #include "command.h"
27 #include "ncu.h"
28 #include "screen.h"
29 #include "screen_status.h"
30 #include "xterm_title.h"
31 #include "strfsong.h"
32 #include "i18n.h"
33 #include "player_command.h"
34 #include "keyboard.h"
35 #include "lirc.h"
36 #include "signals.h"
38 #ifndef NCMPC_MINI
39 #include "conf.h"
40 #endif
42 #ifdef ENABLE_LYRICS_SCREEN
43 #include "lyrics.h"
44 #endif
46 #include <mpd/client.h>
48 #include <stdlib.h>
49 #include <unistd.h>
50 #include <fcntl.h>
51 #include <signal.h>
52 #include <string.h>
54 #ifdef ENABLE_LOCALE
55 #include <locale.h>
56 #endif
58 /* time between mpd updates [ms] */
59 static const guint update_interval = 500;
61 #define BUFSIZE 1024
63 static struct mpdclient *mpd = NULL;
64 static GMainLoop *main_loop;
65 static guint reconnect_source_id, update_source_id;
67 #ifndef NCMPC_MINI
68 static guint check_key_bindings_source_id;
69 #endif
71 #ifndef NCMPC_MINI
72 static void
73 update_xterm_title(void)
74 {
75         const struct mpd_song *song = mpd->song;
77         char tmp[BUFSIZE];
78         if (options.xterm_title_format && mpd->playing && song)
79                 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
80         else
81                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
83         static char title[BUFSIZE];
84         if (strncmp(title, tmp, BUFSIZE)) {
85                 g_strlcpy(title, tmp, BUFSIZE);
86                 set_xterm_title("%s", title);
87         }
88 }
89 #endif
91 static gboolean
92 timer_mpd_update(gpointer data);
94 static void
95 enable_update_timer(void)
96 {
97         if (update_source_id != 0)
98                 return;
100         update_source_id = g_timeout_add(update_interval,
101                                          timer_mpd_update, NULL);
104 static void
105 disable_update_timer(void)
107         if (update_source_id == 0)
108                 return;
110         g_source_remove(update_source_id);
111         update_source_id = 0;
114 static bool
115 should_enable_update_timer(void)
117         return mpd->playing;
120 static void
121 auto_update_timer(void)
123         if (should_enable_update_timer())
124                 enable_update_timer();
125         else
126                 disable_update_timer();
129 static void
130 do_mpd_update(void)
132         if (mpdclient_is_connected(mpd) &&
133             (mpd->events != 0 || mpd->playing))
134                 mpdclient_update(mpd);
136 #ifndef NCMPC_MINI
137         if (options.enable_xterm_title)
138                 update_xterm_title();
139 #endif
141         screen_update(mpd);
142         mpd->events = 0;
145 static char *
146 settings_name(const struct mpd_settings *settings)
148         const char *host = mpd_settings_get_host(settings);
149         if (host == NULL)
150                 host = _("unknown");
152         if (host[0] == '/')
153                 return g_strdup(host);
155         unsigned port = mpd_settings_get_port(settings);
156         if (port == 0 || port == 6600)
157                 return g_strdup(host);
159         return g_strdup_printf("%s:%u", host, port);
162 static char *
163 default_settings_name(void)
165         struct mpd_settings *settings =
166                 mpd_settings_new(options.host, options.port, 0,
167                                  NULL, options.password);
168         if (settings == NULL)
169                 return g_strdup(_("unknown"));
171         char *name = settings_name(settings);
172         mpd_settings_free(settings);
174         return name;
177 /**
178  * This timer is installed when the connection to the MPD server is
179  * broken.  It tries to recover by reconnecting periodically.
180  */
181 static gboolean
182 timer_reconnect(gcc_unused gpointer data)
184         assert(mpdclient_is_dead(mpd));
186         reconnect_source_id = 0;
188         char *name = default_settings_name();
189         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
190                              name, get_key_names(CMD_QUIT, false));
191         g_free(name);
192         doupdate();
194         mpdclient_connect(mpd);
196         return FALSE;
199 void
200 mpdclient_connected_callback(void)
202         assert(reconnect_source_id == 0);
204 #ifndef NCMPC_MINI
205         /* quit if mpd is pre 0.14 - song id not supported by mpd */
206         struct mpd_connection *connection = mpdclient_get_connection(mpd);
207         if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
208                 const unsigned *version =
209                         mpd_connection_get_server_version(connection);
210                 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
211                                      version[0], version[1], version[2],
212                                      "0.16.0");
213                 mpdclient_disconnect(mpd);
214                 doupdate();
216                 /* try again after 30 seconds */
217                 reconnect_source_id = g_timeout_add(30000,
218                                                     timer_reconnect, NULL);
219                 return;
220         }
221 #endif
223         screen_status_clear_message();
224         doupdate();
226         /* update immediately */
227         mpd->events = MPD_IDLE_ALL;
229         do_mpd_update();
231         auto_update_timer();
234 void
235 mpdclient_failed_callback(void)
237         assert(reconnect_source_id == 0);
239         /* try again in 5 seconds */
240         reconnect_source_id = g_timeout_add(5000,
241                                             timer_reconnect, NULL);
244 void
245 mpdclient_lost_callback(void)
247         assert(reconnect_source_id == 0);
249         screen_update(mpd);
251         reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
254 /**
255  * This function is called by the gidle.c library when MPD sends us an
256  * idle event (or when the connection dies).
257  */
258 void
259 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
261 #ifndef NCMPC_MINI
262         if (options.enable_xterm_title)
263                 update_xterm_title();
264 #endif
266         screen_update(mpd);
267         auto_update_timer();
270 static gboolean
271 timer_mpd_update(gcc_unused gpointer data)
273         do_mpd_update();
275         if (should_enable_update_timer())
276                 return true;
277         else {
278                 update_source_id = 0;
279                 return false;
280         }
283 void begin_input_event(void)
287 void end_input_event(void)
289         screen_update(mpd);
290         mpd->events = 0;
292         auto_update_timer();
295 bool
296 do_input_event(command_t cmd)
298         if (cmd == CMD_QUIT) {
299                 g_main_loop_quit(main_loop);
300                 return false;
301         }
303         screen_cmd(mpd, cmd);
305         if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
306                 /* make sure we don't update the volume yet */
307                 disable_update_timer();
309         return true;
312 #ifndef NCMPC_MINI
313 /**
314  * Check the configured key bindings for errors, and display a status
315  * message every 10 seconds.
316  */
317 static gboolean
318 timer_check_key_bindings(gcc_unused gpointer data)
320         char buf[256];
322         if (check_key_bindings(NULL, buf, sizeof(buf))) {
323                 /* no error: disable this timer for the rest of this
324                    process */
325                 check_key_bindings_source_id = 0;
326                 return FALSE;
327         }
329 #ifdef ENABLE_KEYDEF_SCREEN
330         g_strchomp(buf);
331         g_strlcat(buf, " (", sizeof(buf));
332         /* to translators: a key was bound twice in the key editor,
333            and this is a hint for the user what to press to correct
334            that */
335         char comment[64];
336         g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
337                    get_key_names(CMD_SCREEN_KEYDEF, false));
338         g_strlcat(buf, comment, sizeof(buf));
339         g_strlcat(buf, ")", sizeof(buf));
340 #endif
342         screen_status_printf("%s", buf);
344         doupdate();
345         return TRUE;
347 #endif
349 int
350 main(int argc, const char *argv[])
352 #ifdef ENABLE_LOCALE
353 #ifndef ENABLE_NLS
354         gcc_unused
355 #endif
356         const char *charset = NULL;
357         /* time and date formatting */
358         setlocale(LC_TIME,"");
359         /* care about sorting order etc */
360         setlocale(LC_COLLATE,"");
361         /* charset */
362         setlocale(LC_CTYPE,"");
363         /* initialize charset conversions */
364         charset = charset_init();
366         /* initialize i18n support */
367 #endif
369 #ifdef ENABLE_NLS
370         setlocale(LC_MESSAGES, "");
371         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
372 #ifdef ENABLE_LOCALE
373         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
374 #endif
375         textdomain(GETTEXT_PACKAGE);
376 #endif
378         /* initialize options */
379         options_init();
381         /* parse command line options - 1 pass get configuration files */
382         options_parse(argc, argv);
384 #ifndef NCMPC_MINI
385         /* read configuration */
386         read_configuration();
388         /* check key bindings */
389         check_key_bindings(NULL, NULL, 0);
390 #endif
392         /* parse command line options - 2 pass */
393         options_parse(argc, argv);
395         ncu_init();
397 #ifdef ENABLE_LYRICS_SCREEN
398         lyrics_init();
399 #endif
401         /* create mpdclient instance */
402         mpd = mpdclient_new(options.host, options.port,
403                             options.timeout_ms,
404                             options.password);
406         /* initialize curses */
407         screen_init(mpd);
409         /* the main loop */
410         main_loop = g_main_loop_new(NULL, FALSE);
412         /* watch out for keyboard input */
413         keyboard_init();
415         /* watch out for lirc input */
416         ncmpc_lirc_init();
418         signals_init(main_loop, mpd);
420         /* attempt to connect */
421         reconnect_source_id = g_idle_add(timer_reconnect, NULL);
423         auto_update_timer();
425 #ifndef NCMPC_MINI
426         check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
427 #endif
429         screen_paint(mpd);
431         g_main_loop_run(main_loop);
432         g_main_loop_unref(main_loop);
434         /* cleanup */
436         cancel_seek_timer();
438         disable_update_timer();
440         if (reconnect_source_id != 0)
441                 g_source_remove(reconnect_source_id);
443 #ifndef NCMPC_MINI
444         if (check_key_bindings_source_id != 0)
445                 g_source_remove(check_key_bindings_source_id);
446 #endif
448         signals_deinit();
449         ncmpc_lirc_deinit();
451         screen_exit();
452 #ifndef NCMPC_MINI
453         set_xterm_title("");
454 #endif
455         printf("\n");
457         mpdclient_free(mpd);
459 #ifdef ENABLE_LYRICS_SCREEN
460         lyrics_deinit();
461 #endif
463         ncu_deinit();
464         options_deinit();
466         return 0;