1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2010 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
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.
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.
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 "screen_lyrics.h"
21 #include "screen_interface.h"
22 #include "screen_message.h"
23 #include "screen_file.h"
24 #include "screen_song.h"
25 #include "i18n.h"
26 #include "options.h"
27 #include "mpdclient.h"
28 #include "screen.h"
29 #include "lyrics.h"
30 #include "screen_text.h"
32 #include <assert.h>
33 #include <sys/stat.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <glib.h>
37 #include <unistd.h>
38 #include <stdio.h>
40 static struct screen_text text;
42 static struct mpd_song *next_song;
43 static bool follow = false;
45 static struct {
46 struct mpd_song *song;
48 char *artist, *title;
50 struct plugin_cycle *loader;
51 } current;
53 static void
54 screen_lyrics_abort(void)
55 {
56 if (current.loader != NULL) {
57 plugin_stop(current.loader);
58 current.loader = NULL;
59 }
61 if (current.artist != NULL) {
62 g_free(current.artist);
63 current.artist = NULL;
64 }
66 if (current.title != NULL) {
67 g_free(current.title);
68 current.artist = NULL;
69 }
71 if (current.song != NULL) {
72 mpd_song_free(current.song);
73 current.song = NULL;
74 }
75 }
77 /**
78 * Repaint and update the screen, if it is currently active.
79 */
80 static void
81 lyrics_repaint_if_active(void)
82 {
83 if (screen_is_visible(&screen_lyrics)) {
84 screen_text_repaint(&text);
86 /* XXX repaint the screen title */
87 }
88 }
90 static void
91 path_lyr_file(char *path, size_t size,
92 const char *artist, const char *title)
93 {
94 snprintf(path, size, "%s/.lyrics/%s - %s.txt",
95 getenv("HOME"), artist, title);
96 }
98 static bool
99 exists_lyr_file(const char *artist, const char *title)
100 {
101 char path[1024];
102 struct stat result;
104 path_lyr_file(path, 1024, artist, title);
106 return (stat(path, &result) == 0);
107 }
109 static FILE *
110 create_lyr_file(const char *artist, const char *title)
111 {
112 char path[1024];
114 snprintf(path, 1024, "%s/.lyrics",
115 getenv("HOME"));
116 mkdir(path, S_IRWXU);
118 path_lyr_file(path, 1024, artist, title);
120 return fopen(path, "w");
121 }
123 static int
124 store_lyr_hd(void)
125 {
126 FILE *lyr_file;
127 unsigned i;
129 lyr_file = create_lyr_file(current.artist, current.title);
130 if (lyr_file == NULL)
131 return -1;
133 for (i = 0; i < text.lines->len; ++i)
134 fprintf(lyr_file, "%s\n",
135 (const char*)g_ptr_array_index(text.lines, i));
137 fclose(lyr_file);
138 return 0;
139 }
141 static void
142 screen_lyrics_set(const GString *str)
143 {
144 screen_text_set(&text, str);
146 /* paint new data */
148 lyrics_repaint_if_active();
149 }
151 static void
152 screen_lyrics_callback(const GString *result, const bool success,
153 G_GNUC_UNUSED void *data)
154 {
155 assert(current.loader != NULL);
157 /* Display result, which may be lyrics or error messages */
158 if (result != NULL)
159 screen_lyrics_set(result);
161 if (success == true) {
162 if (options.lyrics_autosave &&
163 !exists_lyr_file(current.artist, current.title))
164 store_lyr_hd();
165 } else {
166 /* translators: no lyrics were found for the song */
167 screen_status_message (_("No lyrics"));
168 }
170 plugin_stop(current.loader);
171 current.loader = NULL;
172 }
174 static void
175 screen_lyrics_load(const struct mpd_song *song)
176 {
177 const char *artist, *title;
179 assert(song != NULL);
181 screen_lyrics_abort();
182 screen_text_clear(&text);
184 artist = mpd_song_get_tag(song, MPD_TAG_ARTIST, 0);
185 title = mpd_song_get_tag(song, MPD_TAG_TITLE, 0);
187 current.song = mpd_song_dup(song);
188 current.artist = g_strdup(artist);
189 current.title = g_strdup(title);
191 current.loader = lyrics_load(current.artist, current.title,
192 screen_lyrics_callback, NULL);
193 }
195 static void
196 lyrics_screen_init(WINDOW *w, int cols, int rows)
197 {
198 screen_text_init(&text, w, cols, rows);
199 }
201 static void
202 lyrics_resize(int cols, int rows)
203 {
204 screen_text_resize(&text, cols, rows);
205 }
207 static void
208 lyrics_exit(void)
209 {
210 screen_lyrics_abort();
212 screen_text_deinit(&text);
213 }
215 static void
216 lyrics_open(struct mpdclient *c)
217 {
218 const struct mpd_song *next_song_c =
219 next_song != NULL ? next_song : c->song;
221 if (next_song_c != NULL &&
222 (current.song == NULL ||
223 strcmp(mpd_song_get_uri(next_song_c),
224 mpd_song_get_uri(current.song)) != 0))
225 screen_lyrics_load(next_song_c);
227 if (next_song != NULL)
228 mpd_song_free(next_song);
229 next_song = NULL;
230 }
232 static void
233 lyrics_update(struct mpdclient *c)
234 {
235 if (!follow)
236 return;
238 if (c->song != NULL &&
239 (current.song == NULL ||
240 strcmp(mpd_song_get_uri(c->song),
241 mpd_song_get_uri(current.song)) != 0))
242 screen_lyrics_load(c->song);
243 }
245 static const char *
246 lyrics_title(char *str, size_t size)
247 {
248 if (current.loader != NULL) {
249 snprintf(str, size, "%s (%s)",
250 _("Lyrics"),
251 /* translators: this message is displayed
252 while data is retrieved */
253 _("loading..."));
254 return str;
255 } else if (current.artist != NULL && current.title != NULL &&
256 !screen_text_is_empty(&text)) {
257 snprintf(str, size, "%s: %s - %s",
258 _("Lyrics"),
259 current.artist, current.title);
260 return str;
261 } else
262 return _("Lyrics");
263 }
265 static void
266 lyrics_paint(void)
267 {
268 screen_text_paint(&text);
269 }
271 static bool
272 lyrics_cmd(struct mpdclient *c, command_t cmd)
273 {
274 if (screen_text_cmd(&text, c, cmd))
275 return true;
277 switch(cmd) {
278 case CMD_INTERRUPT:
279 if (current.loader != NULL) {
280 screen_lyrics_abort();
281 screen_text_clear(&text);
282 }
283 return true;
284 case CMD_SAVE_PLAYLIST:
285 if (current.loader == NULL && current.artist != NULL &&
286 current.title != NULL && store_lyr_hd() == 0)
287 /* lyrics for the song were saved on hard disk */
288 screen_status_message (_("Lyrics saved"));
289 return true;
290 case CMD_LYRICS_UPDATE:
291 if (c->song != NULL) {
292 screen_lyrics_load(c->song);
293 screen_text_repaint(&text);
294 }
295 return true;
297 #ifdef ENABLE_SONG_SCREEN
298 case CMD_SCREEN_SONG:
299 if (current.song != NULL) {
300 screen_song_switch(c, current.song);
301 return true;
302 }
304 break;
305 #endif
306 case CMD_SCREEN_SWAP:
307 screen_swap(c, current.song);
308 return true;
310 case CMD_LOCATE:
311 if (current.song != NULL) {
312 screen_file_goto_song(c, current.song);
313 return true;
314 }
316 return false;
318 default:
319 break;
320 }
322 return false;
323 }
325 const struct screen_functions screen_lyrics = {
326 .init = lyrics_screen_init,
327 .exit = lyrics_exit,
328 .open = lyrics_open,
329 .update = lyrics_update,
330 .close = NULL,
331 .resize = lyrics_resize,
332 .paint = lyrics_paint,
333 .cmd = lyrics_cmd,
334 .get_title = lyrics_title,
335 };
337 void
338 screen_lyrics_switch(struct mpdclient *c, const struct mpd_song *song, bool f)
339 {
340 assert(song != NULL);
342 follow = f;
343 next_song = mpd_song_dup(song);
344 screen_switch(&screen_lyrics, c);
345 }