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                 screen_status_message (_("No lyrics"));
 104
 105         plugin_stop(current.loader);
 106         current.loader = NULL;
 107 }
 108
 109 static void
 110 screen_lyrics_load(const struct mpd_song *song)
 111 {
 112         char buffer[MAX_SONGNAME_LENGTH];
 113
 114         assert(song != NULL);
 115
 116         screen_lyrics_abort();
 117         screen_text_clear(&text);
 118
 119         current.song = mpd_songDup(song);
 120
 121         strfsong(buffer, sizeof(buffer), "%artist%", song);
 122         current.artist = g_strdup(buffer);
 123
 124         strfsong(buffer, sizeof(buffer), "%title%", song);
 125         current.title = g_strdup(buffer);
 126
 127         current.loader = lyrics_load(current.artist, current.title,
 128                                      screen_lyrics_callback, NULL);
 129 }
 130
 131 static FILE *create_lyr_file(const char *artist, const char *title)
 132 {
 133         char path[1024];
 134
 135         snprintf(path, 1024, "%s/.lyrics",
 136                  getenv("HOME"));
 137         mkdir(path, S_IRWXU);
 138
 139         snprintf(path, 1024, "%s/.lyrics/%s - %s.txt",
 140                  getenv("HOME"), artist, title);
 141
 142         return fopen(path, "w");
 143 }
 144
 145 static int store_lyr_hd(void)
 146 {
 147         FILE *lyr_file;
 148         unsigned i;
 149
 150         lyr_file = create_lyr_file(current.artist, current.title);
 151         if (lyr_file == NULL)
 152                 return -1;
 153
 154         for (i = 0; i < text.lines->len; ++i)
 155                 fprintf(lyr_file, "%s\n",
 156                         (const char*)g_ptr_array_index(text.lines, i));
 157
 158         fclose(lyr_file);
 159         return 0;
 160 }
 161
 162 static void
 163 lyrics_screen_init(WINDOW *w, int cols, int rows)
 164 {
 165         screen_text_init(&text, w, cols, rows);
 166 }
 167
 168 static void
 169 lyrics_resize(int cols, int rows)
 170 {
 171         screen_text_resize(&text, cols, rows);
 172 }
 173
 174 static void
 175 lyrics_exit(void)
 176 {
 177         screen_lyrics_abort();
 178
 179         screen_text_deinit(&text);
 180 }
 181
 182 static void
 183 lyrics_open(mpdclient_t *c)
 184 {
 185         if (next_song == NULL)
 186                 next_song = c->song;
 187
 188         if (next_song != NULL &&
 189             (current.song == NULL ||
 190              strcmp(next_song->file, current.song->file) != 0))
 191                 screen_lyrics_load(next_song);
 192
 193         next_song = NULL;
 194 }
 195
 196
 197 static const char *
 198 lyrics_title(char *str, size_t size)
 199 {
 200         if (current.loader != NULL) {
 201                 snprintf(str, size, "%s (%s)",
 202                          _("Lyrics"), _("loading..."));
 203                 return str;
 204         } else if (current.artist != NULL && current.title != NULL &&
 205                    !screen_text_is_empty(&text)) {
 206                 snprintf(str, size, "%s: %s - %s",
 207                          _("Lyrics"),
 208                          current.artist, current.title);
 209                 return str;
 210         } else
 211                 return _("Lyrics");
 212 }
 213
 214 static void
 215 lyrics_paint(void)
 216 {
 217         screen_text_paint(&text);
 218 }
 219
 220 static bool
 221 lyrics_cmd(mpdclient_t *c, command_t cmd)
 222 {
 223         if (screen_text_cmd(&text, c, cmd))
 224                 return true;
 225
 226         switch(cmd) {
 227         case CMD_INTERRUPT:
 228                 if (current.loader != NULL) {
 229                         screen_lyrics_abort();
 230                         screen_text_clear(&text);
 231                 }
 232                 return true;
 233         case CMD_ADD:
 234                 if (current.loader == NULL && current.artist != NULL &&
 235                     current.title != NULL && store_lyr_hd() == 0)
 236                         screen_status_message (_("Lyrics saved"));
 237                 return true;
 238         case CMD_LYRICS_UPDATE:
 239                 if (c->song != NULL) {
 240                         screen_lyrics_load(c->song);
 241                         screen_text_repaint(&text);
 242                 }
 243                 return true;
 244
 245 #ifdef ENABLE_SONG_SCREEN
 246         case CMD_VIEW:
 247                 if (current.song != NULL) {
 248                         screen_song_switch(c, current.song);
 249                         return true;
 250                 }
 251
 252                 break;
 253 #endif
 254
 255         case CMD_LOCATE:
 256                 if (current.song != NULL) {
 257                         screen_file_goto_song(c, current.song);
 258                         return true;
 259                 }
 260
 261                 return false;
 262
 263         default:
 264                 break;
 265         }
 266
 267         return false;
 268 }
 269
 270 const struct screen_functions screen_lyrics = {
 271         .init = lyrics_screen_init,
 272         .exit = lyrics_exit,
 273         .open = lyrics_open,
 274         .close = NULL,
 275         .resize = lyrics_resize,
 276         .paint = lyrics_paint,
 277         .cmd = lyrics_cmd,
 278         .get_title = lyrics_title,
 279 };
 280
 281 void
 282 screen_lyrics_switch(struct mpdclient *c, const struct mpd_song *song)
 283 {
 284         assert(song != NULL);
 285
 286         next_song = song;
 287         screen_switch(&screen_lyrics, c);
 288 }