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