src/screen_lyrics.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 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 */
  19
  20 #include "screen_file.h"
  21 #include "i18n.h"
  22 #include "options.h"
  23 #include "mpdclient.h"
  24 #include "command.h"
  25 #include "screen.h"
  26 #include "strfsong.h"
  27 #include "lyrics.h"
  28 #include "screen_text.h"
  29
  30 #include <sys/stat.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <glib.h>
  34 #include <unistd.h>
  35 #include <stdio.h>
  36
  37 static struct screen_text text;
  38
  39 static struct mpd_song *next_song;
  40 static bool follow = false;
  41
  42 static struct {
  43         struct mpd_song *song;
  44
  45         char *artist, *title;
  46
  47         struct plugin_cycle *loader;
  48 } current;
  49
  50 static void
  51 screen_lyrics_abort(void)
  52 {
  53         if (current.loader != NULL) {
  54                 plugin_stop(current.loader);
  55                 current.loader = NULL;
  56         }
  57
  58         if (current.artist != NULL) {
  59                 g_free(current.artist);
  60                 current.artist = NULL;
  61         }
  62
  63         if (current.title != NULL) {
  64                 g_free(current.title);
  65                 current.artist = NULL;
  66         }
  67
  68         if (current.song != NULL) {
  69                 mpd_song_free(current.song);
  70                 current.song = NULL;
  71         }
  72 }
  73
  74 /**
  75  * Repaint and update the screen, if it is currently active.
  76  */
  77 static void
  78 lyrics_repaint_if_active(void)
  79 {
  80         if (screen_is_visible(&screen_lyrics)) {
  81                 screen_text_repaint(&text);
  82
  83                 /* XXX repaint the screen title */
  84         }
  85 }
  86
  87 static bool
  88 exists_lyr_file(const char *artist, const char *title)
  89 {
  90         char path[1024];
  91         struct stat result;
  92
  93         snprintf(path, 1024, "%s/.lyrics/%s - %s.txt",
  94                  getenv("HOME"), artist, title);
  95
  96         return (stat(path, &result) == 0);
  97 }
  98
  99 static FILE *
 100 create_lyr_file(const char *artist, const char *title)
 101 {
 102         char path[1024];
 103
 104         snprintf(path, 1024, "%s/.lyrics",
 105                  getenv("HOME"));
 106         mkdir(path, S_IRWXU);
 107
 108         snprintf(path, 1024, "%s/.lyrics/%s - %s.txt",
 109                  getenv("HOME"), artist, title);
 110
 111         return fopen(path, "w");
 112 }
 113
 114 static int
 115 store_lyr_hd(void)
 116 {
 117         FILE *lyr_file;
 118         unsigned i;
 119
 120         lyr_file = create_lyr_file(current.artist, current.title);
 121         if (lyr_file == NULL)
 122                 return -1;
 123
 124         for (i = 0; i < text.lines->len; ++i)
 125                 fprintf(lyr_file, "%s\n",
 126                         (const char*)g_ptr_array_index(text.lines, i));
 127
 128         fclose(lyr_file);
 129         return 0;
 130 }
 131
 132 static void
 133 screen_lyrics_set(const GString *str)
 134 {
 135         screen_text_set(&text, str);
 136
 137         /* paint new data */
 138
 139         lyrics_repaint_if_active();
 140
 141         if (options.lyrics_autosave &&
 142             !exists_lyr_file(current.artist, current.title))
 143                 store_lyr_hd();
 144 }
 145
 146 static void
 147 screen_lyrics_callback(const GString *result, G_GNUC_UNUSED void *data)
 148 {
 149         assert(current.loader != NULL);
 150
 151         if (result != NULL)
 152                 screen_lyrics_set(result);
 153         else
 154                 /* translators: no lyrics were found for the song */
 155                 screen_status_message (_("No lyrics"));
 156
 157         plugin_stop(current.loader);
 158         current.loader = NULL;
 159 }
 160
 161 static void
 162 screen_lyrics_load(const struct mpd_song *song)
 163 {
 164         char buffer[MAX_SONGNAME_LENGTH];
 165
 166         assert(song != NULL);
 167
 168         screen_lyrics_abort();
 169         screen_text_clear(&text);
 170
 171         current.song = mpd_song_dup(song);
 172
 173         strfsong(buffer, sizeof(buffer), "%artist%", song);
 174         current.artist = g_strdup(buffer);
 175
 176         strfsong(buffer, sizeof(buffer), "%title%", song);
 177         current.title = g_strdup(buffer);
 178
 179         current.loader = lyrics_load(current.artist, current.title,
 180                                      screen_lyrics_callback, NULL);
 181 }
 182
 183 static void
 184 lyrics_screen_init(WINDOW *w, int cols, int rows)
 185 {
 186         screen_text_init(&text, w, cols, rows);
 187 }
 188
 189 static void
 190 lyrics_resize(int cols, int rows)
 191 {
 192         screen_text_resize(&text, cols, rows);
 193 }
 194
 195 static void
 196 lyrics_exit(void)
 197 {
 198         screen_lyrics_abort();
 199
 200         screen_text_deinit(&text);
 201 }
 202
 203 static void
 204 lyrics_open(struct mpdclient *c)
 205 {
 206         const struct mpd_song *next_song_c =
 207                 next_song != NULL ? next_song : c->song;
 208
 209         if (next_song_c != NULL &&
 210             (current.song == NULL ||
 211              strcmp(mpd_song_get_uri(next_song_c),
 212                     mpd_song_get_uri(current.song)) != 0))
 213                 screen_lyrics_load(next_song_c);
 214
 215         if (next_song != NULL)
 216                 mpd_song_free(next_song);
 217         next_song = NULL;
 218 }
 219
 220 static void
 221 lyrics_update(struct mpdclient *c)
 222 {
 223         if (!follow)
 224                 return;
 225
 226         if (c->song != NULL &&
 227             (current.song == NULL ||
 228              strcmp(mpd_song_get_uri(c->song),
 229                     mpd_song_get_uri(current.song)) != 0))
 230                 screen_lyrics_load(c->song);
 231 }
 232
 233 static const char *
 234 lyrics_title(char *str, size_t size)
 235 {
 236         if (current.loader != NULL) {
 237                 snprintf(str, size, "%s (%s)",
 238                          _("Lyrics"),
 239                          /* translators: this message is displayed
 240                             while data is retrieved */
 241                          _("loading..."));
 242                 return str;
 243         } else if (current.artist != NULL && current.title != NULL &&
 244                    !screen_text_is_empty(&text)) {
 245                 snprintf(str, size, "%s: %s - %s",
 246                          _("Lyrics"),
 247                          current.artist, current.title);
 248                 return str;
 249         } else
 250                 return _("Lyrics");
 251 }
 252
 253 static void
 254 lyrics_paint(void)
 255 {
 256         screen_text_paint(&text);
 257 }
 258
 259 static bool
 260 lyrics_cmd(struct mpdclient *c, command_t cmd)
 261 {
 262         if (screen_text_cmd(&text, c, cmd))
 263                 return true;
 264
 265         switch(cmd) {
 266         case CMD_INTERRUPT:
 267                 if (current.loader != NULL) {
 268                         screen_lyrics_abort();
 269                         screen_text_clear(&text);
 270                 }
 271                 return true;
 272         case CMD_SAVE_PLAYLIST:
 273                 if (current.loader == NULL && current.artist != NULL &&
 274                     current.title != NULL && store_lyr_hd() == 0)
 275                         /* lyrics for the song were saved on hard disk */
 276                         screen_status_message (_("Lyrics saved"));
 277                 return true;
 278         case CMD_LYRICS_UPDATE:
 279                 if (c->song != NULL) {
 280                         screen_lyrics_load(c->song);
 281                         screen_text_repaint(&text);
 282                 }
 283                 return true;
 284
 285 #ifdef ENABLE_SONG_SCREEN
 286         case CMD_SCREEN_SONG:
 287                 if (current.song != NULL) {
 288                         screen_song_switch(c, current.song);
 289                         return true;
 290                 }
 291
 292                 break;
 293 #endif
 294         case CMD_SCREEN_SWAP:
 295                 screen_swap(c, current.song);
 296                 return true;
 297
 298         case CMD_LOCATE:
 299                 if (current.song != NULL) {
 300                         screen_file_goto_song(c, current.song);
 301                         return true;
 302                 }
 303
 304                 return false;
 305
 306         default:
 307                 break;
 308         }
 309
 310         return false;
 311 }
 312
 313 const struct screen_functions screen_lyrics = {
 314         .init = lyrics_screen_init,
 315         .exit = lyrics_exit,
 316         .open = lyrics_open,
 317         .update = lyrics_update,
 318         .close = NULL,
 319         .resize = lyrics_resize,
 320         .paint = lyrics_paint,
 321         .cmd = lyrics_cmd,
 322         .get_title = lyrics_title,
 323 };
 324
 325 void
 326 screen_lyrics_switch(struct mpdclient *c, const struct mpd_song *song, bool f)
 327 {
 328         assert(song != NULL);
 329
 330         follow = f;
 331         next_song = mpd_song_dup(song);
 332         screen_switch(&screen_lyrics, c);
 333 }