src/screen_lyrics.c

   1 /*
   2  * (c) 2006 by Kalle Wallin <kaw@linux.se>
   3  * Copyright (C) 2008 Max Kellermann <max@duempel.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  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  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 void
  86 screen_lyrics_set(const GString *str)
  87 {
  88         screen_text_set(&text, str);
  89
  90         /* paint new data */
  91
  92         lyrics_repaint_if_active();
  93 }
  94
  95 static void
  96 screen_lyrics_callback(const GString *result, G_GNUC_UNUSED void *data)
  97 {
  98         assert(current.loader != NULL);
  99
 100         if (result != NULL)
 101                 screen_lyrics_set(result);
 102         else
 103                 /* translators: no lyrics were found for the song */
 104                 screen_status_message (_("No lyrics"));
 105
 106         plugin_stop(current.loader);
 107         current.loader = NULL;
 108 }
 109
 110 static void
 111 screen_lyrics_load(const struct mpd_song *song)
 112 {
 113         char buffer[MAX_SONGNAME_LENGTH];
 114
 115         assert(song != NULL);
 116
 117         screen_lyrics_abort();
 118         screen_text_clear(&text);
 119
 120         current.song = mpd_songDup(song);
 121
 122         strfsong(buffer, sizeof(buffer), "%artist%", song);
 123         current.artist = g_strdup(buffer);
 124
 125         strfsong(buffer, sizeof(buffer), "%title%", song);
 126         current.title = g_strdup(buffer);
 127
 128         current.loader = lyrics_load(current.artist, current.title,
 129                                      screen_lyrics_callback, NULL);
 130 }
 131
 132 static FILE *create_lyr_file(const char *artist, const char *title)
 133 {
 134         char path[1024];
 135
 136         snprintf(path, 1024, "%s/.lyrics",
 137                  getenv("HOME"));
 138         mkdir(path, S_IRWXU);
 139
 140         snprintf(path, 1024, "%s/.lyrics/%s - %s.txt",
 141                  getenv("HOME"), artist, title);
 142
 143         return fopen(path, "w");
 144 }
 145
 146 static int store_lyr_hd(void)
 147 {
 148         FILE *lyr_file;
 149         unsigned i;
 150
 151         lyr_file = create_lyr_file(current.artist, current.title);
 152         if (lyr_file == NULL)
 153                 return -1;
 154
 155         for (i = 0; i < text.lines->len; ++i)
 156                 fprintf(lyr_file, "%s\n",
 157                         (const char*)g_ptr_array_index(text.lines, i));
 158
 159         fclose(lyr_file);
 160         return 0;
 161 }
 162
 163 static void
 164 lyrics_screen_init(WINDOW *w, int cols, int rows)
 165 {
 166         screen_text_init(&text, w, cols, rows);
 167 }
 168
 169 static void
 170 lyrics_resize(int cols, int rows)
 171 {
 172         screen_text_resize(&text, cols, rows);
 173 }
 174
 175 static void
 176 lyrics_exit(void)
 177 {
 178         screen_lyrics_abort();
 179
 180         screen_text_deinit(&text);
 181 }
 182
 183 static void
 184 lyrics_open(mpdclient_t *c)
 185 {
 186         if (next_song == NULL)
 187                 next_song = c->song;
 188
 189         if (next_song != NULL &&
 190             (current.song == NULL ||
 191              strcmp(next_song->file, current.song->file) != 0))
 192                 screen_lyrics_load(next_song);
 193
 194         next_song = NULL;
 195 }
 196
 197
 198 static const char *
 199 lyrics_title(char *str, size_t size)
 200 {
 201         if (current.loader != NULL) {
 202                 snprintf(str, size, "%s (%s)",
 203                          _("Lyrics"),
 204                          /* translators: this message is displayed
 205                             while data is retrieved */
 206                          _("loading..."));
 207                 return str;
 208         } else if (current.artist != NULL && current.title != NULL &&
 209                    !screen_text_is_empty(&text)) {
 210                 snprintf(str, size, "%s: %s - %s",
 211                          _("Lyrics"),
 212                          current.artist, current.title);
 213                 return str;
 214         } else
 215                 return _("Lyrics");
 216 }
 217
 218 static void
 219 lyrics_paint(void)
 220 {
 221         screen_text_paint(&text);
 222 }
 223
 224 static bool
 225 lyrics_cmd(mpdclient_t *c, command_t cmd)
 226 {
 227         if (screen_text_cmd(&text, c, cmd))
 228                 return true;
 229
 230         switch(cmd) {
 231         case CMD_INTERRUPT:
 232                 if (current.loader != NULL) {
 233                         screen_lyrics_abort();
 234                         screen_text_clear(&text);
 235                 }
 236                 return true;
 237         case CMD_ADD:
 238                 if (current.loader == NULL && current.artist != NULL &&
 239                     current.title != NULL && store_lyr_hd() == 0)
 240                         /* lyrics for the song were saved on hard disk */
 241                         screen_status_message (_("Lyrics saved"));
 242                 return true;
 243         case CMD_LYRICS_UPDATE:
 244                 if (c->song != NULL) {
 245                         screen_lyrics_load(c->song);
 246                         screen_text_repaint(&text);
 247                 }
 248                 return true;
 249
 250 #ifdef ENABLE_SONG_SCREEN
 251         case CMD_VIEW:
 252                 if (current.song != NULL) {
 253                         screen_song_switch(c, current.song);
 254                         return true;
 255                 }
 256
 257                 break;
 258 #endif
 259
 260         case CMD_LOCATE:
 261                 if (current.song != NULL) {
 262                         screen_file_goto_song(c, current.song);
 263                         return true;
 264                 }
 265
 266                 return false;
 267
 268         default:
 269                 break;
 270         }
 271
 272         return false;
 273 }
 274
 275 const struct screen_functions screen_lyrics = {
 276         .init = lyrics_screen_init,
 277         .exit = lyrics_exit,
 278         .open = lyrics_open,
 279         .close = NULL,
 280         .resize = lyrics_resize,
 281         .paint = lyrics_paint,
 282         .cmd = lyrics_cmd,
 283         .get_title = lyrics_title,
 284 };
 285
 286 void
 287 screen_lyrics_switch(struct mpdclient *c, const struct mpd_song *song)
 288 {
 289         assert(song != NULL);
 290
 291         next_song = song;
 292         screen_switch(&screen_lyrics, c);
 293 }