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_utils.h"
30 #include "screen_status.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);
102 }
104 static void
105 disable_update_timer(void)
106 {
107 if (update_source_id == 0)
108 return;
110 g_source_remove(update_source_id);
111 update_source_id = 0;
112 }
114 static bool
115 should_enable_update_timer(void)
116 {
117 return mpd->playing
118 #ifndef NCMPC_MINI
119 || options.display_time
120 #endif
121 ;
122 }
124 static void
125 auto_update_timer(void)
126 {
127 if (should_enable_update_timer())
128 enable_update_timer();
129 else
130 disable_update_timer();
131 }
133 static void
134 do_mpd_update(void)
135 {
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;
147 }
149 static char *
150 settings_name(const struct mpd_settings *settings)
151 {
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);
164 }
166 static char *
167 default_settings_name(void)
168 {
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;
179 }
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)
187 {
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;
201 }
203 void
204 mpdclient_connected_callback(void)
205 {
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 = g_timeout_add(30000,
222 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();
236 }
238 void
239 mpdclient_failed_callback(void)
240 {
241 assert(reconnect_source_id == 0);
243 /* try again in 5 seconds */
244 reconnect_source_id = g_timeout_add(5000,
245 timer_reconnect, NULL);
246 }
248 void
249 mpdclient_lost_callback(void)
250 {
251 assert(reconnect_source_id == 0);
253 screen_update(mpd);
255 reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
256 }
258 /**
259 * This function is called by the gidle.c library when MPD sends us an
260 * idle event (or when the connection dies).
261 */
262 void
263 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
264 {
265 #ifndef NCMPC_MINI
266 if (options.enable_xterm_title)
267 update_xterm_title();
268 #endif
270 screen_update(mpd);
271 auto_update_timer();
272 }
274 static gboolean
275 timer_mpd_update(gcc_unused gpointer data)
276 {
277 do_mpd_update();
279 if (should_enable_update_timer())
280 return true;
281 else {
282 update_source_id = 0;
283 return false;
284 }
285 }
287 void begin_input_event(void)
288 {
289 }
291 void end_input_event(void)
292 {
293 screen_update(mpd);
294 mpd->events = 0;
296 auto_update_timer();
297 }
299 bool
300 do_input_event(command_t cmd)
301 {
302 if (cmd == CMD_QUIT) {
303 g_main_loop_quit(main_loop);
304 return false;
305 }
307 screen_cmd(mpd, cmd);
309 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
310 /* make sure we don't update the volume yet */
311 disable_update_timer();
313 return true;
314 }
316 #ifndef NCMPC_MINI
317 /**
318 * Check the configured key bindings for errors, and display a status
319 * message every 10 seconds.
320 */
321 static gboolean
322 timer_check_key_bindings(gcc_unused gpointer data)
323 {
324 char buf[256];
326 if (check_key_bindings(NULL, buf, sizeof(buf))) {
327 /* no error: disable this timer for the rest of this
328 process */
329 check_key_bindings_source_id = 0;
330 return FALSE;
331 }
333 #ifdef ENABLE_KEYDEF_SCREEN
334 g_strchomp(buf);
335 g_strlcat(buf, " (", sizeof(buf));
336 /* to translators: a key was bound twice in the key editor,
337 and this is a hint for the user what to press to correct
338 that */
339 char comment[64];
340 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
341 get_key_names(CMD_SCREEN_KEYDEF, false));
342 g_strlcat(buf, comment, sizeof(buf));
343 g_strlcat(buf, ")", sizeof(buf));
344 #endif
346 screen_status_printf("%s", buf);
348 doupdate();
349 return TRUE;
350 }
351 #endif
353 int
354 main(int argc, const char *argv[])
355 {
356 #ifdef ENABLE_LOCALE
357 #ifndef ENABLE_NLS
358 gcc_unused
359 #endif
360 const char *charset = NULL;
361 /* time and date formatting */
362 setlocale(LC_TIME,"");
363 /* care about sorting order etc */
364 setlocale(LC_COLLATE,"");
365 /* charset */
366 setlocale(LC_CTYPE,"");
367 /* initialize charset conversions */
368 charset = charset_init();
370 /* initialize i18n support */
371 #endif
373 #ifdef ENABLE_NLS
374 setlocale(LC_MESSAGES, "");
375 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
376 #ifdef ENABLE_LOCALE
377 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
378 #endif
379 textdomain(GETTEXT_PACKAGE);
380 #endif
382 /* initialize options */
383 options_init();
385 /* parse command line options - 1 pass get configuration files */
386 options_parse(argc, argv);
388 #ifndef NCMPC_MINI
389 /* read configuration */
390 read_configuration();
392 /* check key bindings */
393 check_key_bindings(NULL, NULL, 0);
394 #endif
396 /* parse command line options - 2 pass */
397 options_parse(argc, argv);
399 ncu_init();
401 #ifdef ENABLE_LYRICS_SCREEN
402 lyrics_init();
403 #endif
405 /* create mpdclient instance */
406 mpd = mpdclient_new(options.host, options.port,
407 options.timeout_ms,
408 options.password);
410 /* initialize curses */
411 screen_init(mpd);
413 /* the main loop */
414 main_loop = g_main_loop_new(NULL, FALSE);
416 /* watch out for keyboard input */
417 keyboard_init();
419 /* watch out for lirc input */
420 ncmpc_lirc_init();
422 signals_init(main_loop, mpd);
424 /* attempt to connect */
425 reconnect_source_id = g_idle_add(timer_reconnect, NULL);
427 auto_update_timer();
429 #ifndef NCMPC_MINI
430 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
431 #endif
433 screen_paint(mpd);
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;
471 }