Code

72a9362e53e2cee8f3766484e32a9739765b1dfc
[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                 *tmp = 0;
83         if (*tmp == 0)
84                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
86         static char title[BUFSIZE];
87         if (strncmp(title, tmp, BUFSIZE)) {
88                 g_strlcpy(title, tmp, BUFSIZE);
89                 set_xterm_title(title);
90         }
91 }
92 #endif
94 static gboolean
95 timer_mpd_update(gpointer data);
97 static void
98 enable_update_timer(void)
99 {
100         if (update_source_id != 0)
101                 return;
103         update_source_id = g_timeout_add(update_interval,
104                                          timer_mpd_update, NULL);
107 static void
108 disable_update_timer(void)
110         if (update_source_id == 0)
111                 return;
113         g_source_remove(update_source_id);
114         update_source_id = 0;
117 static bool
118 should_enable_update_timer(void)
120         return mpd->playing;
123 static void
124 auto_update_timer(void)
126         if (should_enable_update_timer())
127                 enable_update_timer();
128         else
129                 disable_update_timer();
132 static void
133 do_mpd_update(void)
135         if (mpdclient_is_connected(mpd) &&
136             (mpd->events != 0 || mpd->playing))
137                 mpdclient_update(mpd);
139 #ifndef NCMPC_MINI
140         if (options.enable_xterm_title)
141                 update_xterm_title();
142 #endif
144         screen_update(mpd);
145         mpd->events = 0;
148 static char *
149 settings_name(const struct mpd_settings *settings)
151         const char *host = mpd_settings_get_host(settings);
152         if (host == NULL)
153                 host = _("unknown");
155         if (host[0] == '/')
156                 return g_strdup(host);
158         unsigned port = mpd_settings_get_port(settings);
159         if (port == 0 || port == 6600)
160                 return g_strdup(host);
162         return g_strdup_printf("%s:%u", host, port);
165 static char *
166 default_settings_name(void)
168         struct mpd_settings *settings =
169                 mpd_settings_new(options.host, options.port, 0,
170                                  NULL, options.password);
171         if (settings == NULL)
172                 return g_strdup(_("unknown"));
174         char *name = settings_name(settings);
175         mpd_settings_free(settings);
177         return name;
180 /**
181  * This timer is installed when the connection to the MPD server is
182  * broken.  It tries to recover by reconnecting periodically.
183  */
184 static gboolean
185 timer_reconnect(gcc_unused gpointer data)
187         assert(mpdclient_is_dead(mpd));
189         reconnect_source_id = 0;
191         char *name = default_settings_name();
192         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
193                              name, get_key_names(CMD_QUIT, false));
194         g_free(name);
195         doupdate();
197         mpdclient_connect(mpd);
199         return FALSE;
202 void
203 mpdclient_connected_callback(void)
205         assert(reconnect_source_id == 0);
207 #ifndef NCMPC_MINI
208         /* quit if mpd is pre 0.14 - song id not supported by mpd */
209         struct mpd_connection *connection = mpdclient_get_connection(mpd);
210         if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
211                 const unsigned *version =
212                         mpd_connection_get_server_version(connection);
213                 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
214                                      version[0], version[1], version[2],
215                                      "0.16.0");
216                 mpdclient_disconnect(mpd);
217                 doupdate();
219                 /* try again after 30 seconds */
220                 reconnect_source_id = g_timeout_add(30000,
221                                                     timer_reconnect, NULL);
222                 return;
223         }
224 #endif
226         screen_status_clear_message();
227         doupdate();
229         /* update immediately */
230         mpd->events = MPD_IDLE_ALL;
232         do_mpd_update();
234         auto_update_timer();
237 void
238 mpdclient_failed_callback(void)
240         assert(reconnect_source_id == 0);
242         /* try again in 5 seconds */
243         reconnect_source_id = g_timeout_add(5000,
244                                             timer_reconnect, NULL);
247 void
248 mpdclient_lost_callback(void)
250         assert(reconnect_source_id == 0);
252         screen_update(mpd);
254         reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
257 /**
258  * This function is called by the gidle.c library when MPD sends us an
259  * idle event (or when the connection dies).
260  */
261 void
262 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
264 #ifndef NCMPC_MINI
265         if (options.enable_xterm_title)
266                 update_xterm_title();
267 #endif
269         screen_update(mpd);
270         auto_update_timer();
273 static gboolean
274 timer_mpd_update(gcc_unused gpointer data)
276         do_mpd_update();
278         if (should_enable_update_timer())
279                 return true;
280         else {
281                 update_source_id = 0;
282                 return false;
283         }
286 void begin_input_event(void)
290 void end_input_event(void)
292         screen_update(mpd);
293         mpd->events = 0;
295         auto_update_timer();
298 bool
299 do_input_event(command_t cmd)
301         if (cmd == CMD_QUIT) {
302                 g_main_loop_quit(main_loop);
303                 return false;
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                 disable_update_timer();
312         return true;
315 #ifndef NCMPC_MINI
316 /**
317  * Check the configured key bindings for errors, and display a status
318  * message every 10 seconds.
319  */
320 static gboolean
321 timer_check_key_bindings(gcc_unused gpointer data)
323         char buf[256];
325         if (check_key_bindings(NULL, buf, sizeof(buf))) {
326                 /* no error: disable this timer for the rest of this
327                    process */
328                 check_key_bindings_source_id = 0;
329                 return FALSE;
330         }
332 #ifdef ENABLE_KEYDEF_SCREEN
333         g_strchomp(buf);
334         g_strlcat(buf, " (", sizeof(buf));
335         /* to translators: a key was bound twice in the key editor,
336            and this is a hint for the user what to press to correct
337            that */
338         char comment[64];
339         g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
340                    get_key_names(CMD_SCREEN_KEYDEF, false));
341         g_strlcat(buf, comment, sizeof(buf));
342         g_strlcat(buf, ")", sizeof(buf));
343 #endif
345         screen_status_printf("%s", buf);
347         doupdate();
348         return TRUE;
350 #endif
352 int
353 main(int argc, const char *argv[])
355 #ifdef ENABLE_LOCALE
356 #ifndef ENABLE_NLS
357         gcc_unused
358 #endif
359         const char *charset = NULL;
360         /* time and date formatting */
361         setlocale(LC_TIME,"");
362         /* care about sorting order etc */
363         setlocale(LC_COLLATE,"");
364         /* charset */
365         setlocale(LC_CTYPE,"");
366         /* initialize charset conversions */
367         charset = charset_init();
369         /* initialize i18n support */
370 #endif
372 #ifdef ENABLE_NLS
373         setlocale(LC_MESSAGES, "");
374         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
375 #ifdef ENABLE_LOCALE
376         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
377 #endif
378         textdomain(GETTEXT_PACKAGE);
379 #endif
381         /* initialize options */
382         options_init();
384         /* parse command line options - 1 pass get configuration files */
385         options_parse(argc, argv);
387 #ifndef NCMPC_MINI
388         /* read configuration */
389         read_configuration();
391         /* check key bindings */
392         check_key_bindings(NULL, NULL, 0);
393 #endif
395         /* parse command line options - 2 pass */
396         options_parse(argc, argv);
398         ncu_init();
400 #ifdef ENABLE_LYRICS_SCREEN
401         lyrics_init();
402 #endif
404         /* create mpdclient instance */
405         mpd = mpdclient_new(options.host, options.port,
406                             options.timeout_ms,
407                             options.password);
409         /* initialize curses */
410         screen_init(mpd);
412         /* the main loop */
413         main_loop = g_main_loop_new(NULL, FALSE);
415         /* watch out for keyboard input */
416         keyboard_init();
418         /* watch out for lirc input */
419         ncmpc_lirc_init();
421         signals_init(main_loop, mpd);
423         /* attempt to connect */
424         reconnect_source_id = g_idle_add(timer_reconnect, NULL);
426         auto_update_timer();
428 #ifndef NCMPC_MINI
429         check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
430 #endif
432         screen_paint(mpd);
434         g_main_loop_run(main_loop);
435         g_main_loop_unref(main_loop);
437         /* cleanup */
439         cancel_seek_timer();
441         disable_update_timer();
443         if (reconnect_source_id != 0)
444                 g_source_remove(reconnect_source_id);
446 #ifndef NCMPC_MINI
447         if (check_key_bindings_source_id != 0)
448                 g_source_remove(check_key_bindings_source_id);
449 #endif
451         signals_deinit();
452         ncmpc_lirc_deinit();
454         screen_exit();
455 #ifndef NCMPC_MINI
456         set_xterm_title("");
457 #endif
458         printf("\n");
460         mpdclient_free(mpd);
462 #ifdef ENABLE_LYRICS_SCREEN
463         lyrics_deinit();
464 #endif
466         ncu_deinit();
467         options_deinit();
469         return 0;