Code

screen: rename screen_refresh() to screen_paint()
[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         const char *new_title = NULL;
79         if (options.xterm_title_format && mpd->playing && song)
80                 new_title = strfsong(tmp, BUFSIZE, options.xterm_title_format, song) > 0
81                         ? tmp
82                         : NULL;
84         if (new_title == NULL)
85                 new_title = PACKAGE " version " VERSION;
87         static char title[BUFSIZE];
88         if (strncmp(title, new_title, BUFSIZE)) {
89                 g_strlcpy(title, new_title, BUFSIZE);
90                 set_xterm_title(title);
91         }
92 }
93 #endif
95 static gboolean
96 timer_mpd_update(gpointer data);
98 static void
99 enable_update_timer(void)
101         if (update_source_id != 0)
102                 return;
104         update_source_id = g_timeout_add(update_interval,
105                                          timer_mpd_update, NULL);
108 static void
109 disable_update_timer(void)
111         if (update_source_id == 0)
112                 return;
114         g_source_remove(update_source_id);
115         update_source_id = 0;
118 static bool
119 should_enable_update_timer(void)
121         return mpd->playing;
124 static void
125 auto_update_timer(void)
127         if (should_enable_update_timer())
128                 enable_update_timer();
129         else
130                 disable_update_timer();
133 static void
134 do_mpd_update(void)
136         if (mpdclient_is_connected(mpd) &&
137             (mpd->events != 0 || mpd->playing))
138                 mpdclient_update(mpd);
140 #ifndef NCMPC_MINI
141         if (options.enable_xterm_title)
142                 update_xterm_title();
143 #endif
145         screen_update(mpd);
146         mpd->events = 0;
149 static char *
150 settings_name(const struct mpd_settings *settings)
152         const char *host = mpd_settings_get_host(settings);
153         if (host == NULL)
154                 host = _("unknown");
156         if (host[0] == '/')
157                 return g_strdup(host);
159         unsigned port = mpd_settings_get_port(settings);
160         if (port == 0 || port == 6600)
161                 return g_strdup(host);
163         return g_strdup_printf("%s:%u", host, port);
166 static char *
167 default_settings_name(void)
169         struct mpd_settings *settings =
170                 mpd_settings_new(options.host, options.port, 0,
171                                  NULL, options.password);
172         if (settings == NULL)
173                 return g_strdup(_("unknown"));
175         char *name = settings_name(settings);
176         mpd_settings_free(settings);
178         return name;
181 /**
182  * This timer is installed when the connection to the MPD server is
183  * broken.  It tries to recover by reconnecting periodically.
184  */
185 static gboolean
186 timer_reconnect(gcc_unused gpointer data)
188         assert(mpdclient_is_dead(mpd));
190         reconnect_source_id = 0;
192         char *name = default_settings_name();
193         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
194                              name, get_key_names(CMD_QUIT, false));
195         g_free(name);
196         doupdate();
198         mpdclient_connect(mpd);
200         return FALSE;
203 void
204 mpdclient_connected_callback(void)
206         assert(reconnect_source_id == 0);
208 #ifndef NCMPC_MINI
209         /* quit if mpd is pre 0.14 - song id not supported by mpd */
210         struct mpd_connection *connection = mpdclient_get_connection(mpd);
211         if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
212                 const unsigned *version =
213                         mpd_connection_get_server_version(connection);
214                 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
215                                      version[0], version[1], version[2],
216                                      "0.16.0");
217                 mpdclient_disconnect(mpd);
218                 doupdate();
220                 /* try again after 30 seconds */
221                 reconnect_source_id =
222                         g_timeout_add_seconds(30, timer_reconnect, NULL);
223                 return;
224         }
225 #endif
227         screen_status_clear_message();
228         doupdate();
230         /* update immediately */
231         mpd->events = MPD_IDLE_ALL;
233         do_mpd_update();
235         auto_update_timer();
238 void
239 mpdclient_failed_callback(void)
241         assert(reconnect_source_id == 0);
243         /* try again in 5 seconds */
244         reconnect_source_id = g_timeout_add_seconds(5, 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_seconds(1, 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 =
430                 g_timeout_add_seconds(10, timer_check_key_bindings, NULL);
431 #endif
433         screen_paint(mpd, true);
435         g_main_loop_run(main_loop);
436         g_main_loop_unref(main_loop);
438         /* cleanup */
440         cancel_seek_timer();
442         disable_update_timer();
444         if (reconnect_source_id != 0)
445                 g_source_remove(reconnect_source_id);
447 #ifndef NCMPC_MINI
448         if (check_key_bindings_source_id != 0)
449                 g_source_remove(check_key_bindings_source_id);
450 #endif
452         signals_deinit();
453         ncmpc_lirc_deinit();
455         screen_exit();
456 #ifndef NCMPC_MINI
457         set_xterm_title("");
458 #endif
459         printf("\n");
461         mpdclient_free(mpd);
463 #ifdef ENABLE_LYRICS_SCREEN
464         lyrics_deinit();
465 #endif
467         ncu_deinit();
468         options_deinit();
470         return 0;