src/mpdclient.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <time.h>
  25 #include <string.h>
  26 #include <glib.h>
  27
  28 #include "config.h"
  29 #include "ncmpc.h"
  30 #include "support.h"
  31 #include "mpdclient.h"
  32 #include "options.h"
  33
  34 #undef  ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_ADD /* broken with song id's */
  35 #define ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_DELETE
  36 #define ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_MOVE
  37 #define ENABLE_SONG_ID
  38 #define ENABLE_PLCHANGES
  39
  40 #define MPD_ERROR(c) (c==NULL || c->connection==NULL || c->connection->error)
  41
  42
  43 /* Error callbacks */
  44 static gint
  45 error_cb(mpdclient_t *c, gint error, gchar *msg)
  46 {
  47   GList *list = c->error_callbacks;
  48
  49   if( list==NULL )
  50     fprintf(stderr, "error [%d]: %s\n", (error & 0xFF), msg);
  51
  52   while(list)
  53     {
  54       mpdc_error_cb_t cb = list->data;
  55       if( cb )
  56         cb(c, error, msg);
  57       list=list->next;
  58     }
  59   mpd_clearError(c->connection);
  60   return error;
  61 }
  62
  63 #ifdef DEBUG
  64 #include "strfsong.h"
  65
  66 static gchar *
  67 get_song_name(mpd_Song *song)
  68 {
  69   static gchar name[256];
  70
  71   strfsong(name, 256, "[%artist% - ]%title%|%file%", song);
  72   return name;
  73 }
  74
  75 #endif
  76
  77 /****************************************************************************/
  78 /*** mpdclient functions ****************************************************/
  79 /****************************************************************************/
  80
  81 gint
  82 mpdclient_finish_command(mpdclient_t *c)
  83 {
  84   mpd_finishCommand(c->connection);
  85
  86   if( c->connection->error )
  87     {
  88       gchar *msg = locale_to_utf8(c->connection->errorStr);
  89       gint error = c->connection->error;
  90
  91       if( error == MPD_ERROR_ACK )
  92         error = error | (c->connection->errorCode << 8);
  93
  94       error_cb(c, error, msg);
  95       g_free(msg);
  96       return error;
  97     }
  98
  99   return 0;
 100 }
 101
 102 mpdclient_t *
 103 mpdclient_new(void)
 104 {
 105   mpdclient_t *c;
 106
 107   c = g_malloc0(sizeof(mpdclient_t));
 108
 109   return c;
 110 }
 111
 112 mpdclient_t *
 113 mpdclient_free(mpdclient_t *c)
 114 {
 115   mpdclient_disconnect(c);
 116   g_list_free(c->error_callbacks);
 117   g_list_free(c->playlist_callbacks);
 118   g_list_free(c->browse_callbacks);
 119   g_free(c);
 120
 121   return NULL;
 122 }
 123
 124 gint
 125 mpdclient_disconnect(mpdclient_t *c)
 126 {
 127   if( c->connection )
 128     mpd_closeConnection(c->connection);
 129   c->connection = NULL;
 130
 131   if( c->status )
 132     mpd_freeStatus(c->status);
 133   c->status = NULL;
 134
 135   if( c->playlist.list )
 136     mpdclient_playlist_free(&c->playlist);
 137
 138   if( c->song )
 139     c->song = NULL;
 140
 141   return 0;
 142 }
 143
 144 gint
 145 mpdclient_connect(mpdclient_t *c,
 146                   gchar *host,
 147                   gint port,
 148                   gfloat timeout,
 149                   gchar *password)
 150 {
 151   gint retval = 0;
 152
 153   /* close any open connection */
 154   if( c->connection )
 155     mpdclient_disconnect(c);
 156
 157   /* connect to MPD */
 158   c->connection = mpd_newConnection(host, port, timeout);
 159   if( c->connection->error )
 160     return error_cb(c, c->connection->error, c->connection->errorStr);
 161
 162   /* send password */
 163   if( password )
 164     {
 165       mpd_sendPasswordCommand(c->connection, password);
 166       retval = mpdclient_finish_command(c);
 167     }
 168   c->need_update = TRUE;
 169
 170   return retval;
 171 }
 172
 173 gint
 174 mpdclient_update(mpdclient_t *c)
 175 {
 176   gint retval = 0;
 177
 178   if( MPD_ERROR(c) )
 179     return -1;
 180
 181   /* free the old status */
 182   if( c->status )
 183     mpd_freeStatus(c->status);
 184
 185   /* retreive new status */
 186   mpd_sendStatusCommand(c->connection);
 187   c->status = mpd_getStatus(c->connection);
 188   if( (retval=mpdclient_finish_command(c)) )
 189     return retval;
 190 #ifdef DEBUG
 191   if( c->status->error )
 192     D("status> %s\n", c->status->error);
 193 #endif
 194
 195   /* check if the playlist needs an update */
 196   if( c->playlist.id != c->status->playlist )
 197     {
 198       if( c->playlist.list )
 199         retval = mpdclient_playlist_update_changes(c);
 200       else
 201         retval = mpdclient_playlist_update(c);
 202     }
 203
 204   /* update the current song */
 205   if( !c->song || c->status->songid != c->song->id )
 206     {
 207       c->song = playlist_get_song(c, c->status->song);
 208     }
 209
 210   c->need_update = FALSE;
 211
 212   return retval;
 213 }
 214
 215
 216 /****************************************************************************/
 217 /*** MPD Commands  **********************************************************/
 218 /****************************************************************************/
 219
 220 gint
 221 mpdclient_cmd_play(mpdclient_t *c, gint index)
 222 {
 223 #ifdef ENABLE_SONG_ID
 224   mpd_Song *song = playlist_get_song(c, index);
 225
 226   D("Play id:%d\n", song ? song->id : -1);
 227   if( song )
 228     mpd_sendPlayIdCommand(c->connection, song->id);
 229   else
 230     mpd_sendPlayIdCommand(c->connection, MPD_PLAY_AT_BEGINNING);
 231 #else
 232   mpd_sendPlayCommand(c->connection, index);
 233 #endif
 234   c->need_update = TRUE;
 235   return mpdclient_finish_command(c);
 236 }
 237
 238 gint
 239 mpdclient_cmd_pause(mpdclient_t *c, gint value)
 240 {
 241   mpd_sendPauseCommand(c->connection, value);
 242   return mpdclient_finish_command(c);
 243 }
 244
 245 gint
 246 mpdclient_cmd_stop(mpdclient_t *c)
 247 {
 248   mpd_sendStopCommand(c->connection);
 249   return mpdclient_finish_command(c);
 250 }
 251
 252 gint
 253 mpdclient_cmd_next(mpdclient_t *c)
 254 {
 255   mpd_sendNextCommand(c->connection);
 256   c->need_update = TRUE;
 257   return mpdclient_finish_command(c);
 258 }
 259
 260 gint
 261 mpdclient_cmd_prev(mpdclient_t *c)
 262 {
 263   mpd_sendPrevCommand(c->connection);
 264   c->need_update = TRUE;
 265   return mpdclient_finish_command(c);
 266 }
 267
 268 gint
 269 mpdclient_cmd_seek(mpdclient_t *c, gint id, gint pos)
 270 {
 271   D("Seek id:%d\n", id);
 272   mpd_sendSeekIdCommand(c->connection, id, pos);
 273   return mpdclient_finish_command(c);
 274 }
 275
 276 gint
 277 mpdclient_cmd_shuffle(mpdclient_t *c)
 278 {
 279   mpd_sendShuffleCommand(c->connection);
 280   c->need_update = TRUE;
 281   return mpdclient_finish_command(c);
 282 }
 283
 284 gint
 285 mpdclient_cmd_clear(mpdclient_t *c)
 286 {
 287   gint retval = 0;
 288
 289   mpd_sendClearCommand(c->connection);
 290   retval = mpdclient_finish_command(c);
 291   /* call playlist updated callback */
 292   mpdclient_playlist_callback(c, PLAYLIST_EVENT_CLEAR, NULL);
 293   c->need_update = TRUE;
 294   return retval;
 295 }
 296
 297 gint
 298 mpdclient_cmd_repeat(mpdclient_t *c, gint value)
 299 {
 300   mpd_sendRepeatCommand(c->connection, value);
 301   return mpdclient_finish_command(c);
 302 }
 303
 304 gint
 305 mpdclient_cmd_random(mpdclient_t *c, gint value)
 306 {
 307   mpd_sendRandomCommand(c->connection, value);
 308   return mpdclient_finish_command(c);
 309 }
 310
 311 gint
 312 mpdclient_cmd_crossfade(mpdclient_t *c, gint value)
 313 {
 314   mpd_sendCrossfadeCommand(c->connection, value);
 315   return mpdclient_finish_command(c);
 316 }
 317
 318 gint
 319 mpdclient_cmd_db_update_utf8(mpdclient_t *c, gchar *path)
 320 {
 321   mpd_sendUpdateCommand(c->connection, path ? path : "");
 322   return mpdclient_finish_command(c);
 323 }
 324
 325 gint
 326 mpdclient_cmd_volume(mpdclient_t *c, gint value)
 327 {
 328   mpd_sendSetvolCommand(c->connection, value);
 329   return mpdclient_finish_command(c);
 330 }
 331
 332 gint
 333 mpdclient_cmd_add_path_utf8(mpdclient_t *c, gchar *path_utf8)
 334 {
 335   mpd_sendAddCommand(c->connection, path_utf8);
 336   return mpdclient_finish_command(c);
 337 }
 338
 339 gint
 340 mpdclient_cmd_add_path(mpdclient_t *c, gchar *path)
 341 {
 342   gint retval;
 343   gchar *path_utf8 = locale_to_utf8(path);
 344
 345   retval=mpdclient_cmd_add_path_utf8(c, path_utf8);
 346   g_free(path_utf8);
 347   return retval;
 348 }
 349
 350 gint
 351 mpdclient_cmd_add(mpdclient_t *c, mpd_Song *song)
 352 {
 353   gint retval = 0;
 354
 355   if( !song || !song->file )
 356     return -1;
 357
 358   /* send the add command to mpd */
 359   mpd_sendAddCommand(c->connection, song->file);
 360   if( (retval=mpdclient_finish_command(c)) )
 361     return retval;
 362
 363 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_ADD
 364   /* add the song to playlist */
 365   c->playlist.list = g_list_append(c->playlist.list, mpd_songDup(song));
 366   c->playlist.length++;
 367
 368   /* increment the playlist id, so we dont retrives a new playlist */
 369   c->playlist.id++;
 370
 371   /* call playlist updated callback */
 372   mpdclient_playlist_callback(c, PLAYLIST_EVENT_ADD, (gpointer) song);
 373 #else
 374   c->need_update = TRUE;
 375 #endif
 376
 377   return 0;
 378 }
 379
 380 gint
 381 mpdclient_cmd_delete(mpdclient_t *c, gint index)
 382 {
 383   gint retval = 0;
 384   mpd_Song *song = playlist_get_song(c, index);
 385
 386   if( !song )
 387     return -1;
 388
 389   /* send the delete command to mpd */
 390 #ifdef ENABLE_SONG_ID
 391   D("Delete id:%d\n", song->id);
 392   mpd_sendDeleteIdCommand(c->connection, song->id);
 393 #else
 394   mpd_sendDeleteCommand(c->connection, index);
 395 #endif
 396   if( (retval=mpdclient_finish_command(c)) )
 397     return retval;
 398
 399 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_DELETE
 400   /* increment the playlist id, so we dont retrive a new playlist */
 401   c->playlist.id++;
 402
 403   /* remove the song from the playlist */
 404   c->playlist.list = g_list_remove(c->playlist.list, (gpointer) song);
 405   c->playlist.length = g_list_length(c->playlist.list);
 406
 407   /* call playlist updated callback */
 408   mpdclient_playlist_callback(c, PLAYLIST_EVENT_DELETE, (gpointer) song);
 409
 410   /* remove references to the song */
 411   if( c->song == song )
 412     {
 413       c->song = NULL;
 414       c->need_update = TRUE;
 415     }
 416
 417   /* free song */
 418   mpd_freeSong(song);
 419
 420 #else
 421   c->need_update = TRUE;
 422 #endif
 423
 424   return 0;
 425 }
 426
 427 gint
 428 mpdclient_cmd_move(mpdclient_t *c, gint old_index, gint new_index)
 429 {
 430   gint n, index1, index2;
 431   GList *item1, *item2;
 432   gpointer data1, data2;
 433   mpd_Song *song1, *song2;
 434
 435   if( old_index==new_index || new_index<0 || new_index>=c->playlist.length )
 436     return -1;
 437
 438   song1 = playlist_get_song(c, old_index);
 439   song2 = playlist_get_song(c, new_index);
 440
 441   /* send the move command to mpd */
 442 #ifdef ENABLE_SONG_ID
 443   D("Swaping id:%d with id:%d\n", song1->id, song2->id);
 444   mpd_sendSwapIdCommand(c->connection, song1->id, song2->id);
 445 #else
 446   D("Moving index %d to id:%d\n", old_index, new_index);
 447   mpd_sendMoveCommand(c->connection, old_index, new_index);
 448 #endif
 449   if( (n=mpdclient_finish_command(c)) )
 450     return n;
 451
 452 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_MOVE
 453   /* update the songs position field */
 454   n = song1->pos;
 455   song1->pos = song2->pos;
 456   song2->pos = n;
 457   index1 = MIN(old_index, new_index);
 458   index2 = MAX(old_index, new_index);
 459   /* retreive the list items */
 460   item1 = g_list_nth(c->playlist.list, index1);
 461   item2 = g_list_nth(c->playlist.list, index2);
 462   /* retrieve the songs */
 463   data1 = item1->data;
 464   data2 = item2->data;
 465
 466   /* move the second item */
 467   c->playlist.list = g_list_remove(c->playlist.list, data2);
 468   c->playlist.list = g_list_insert_before(c->playlist.list, item1, data2);
 469
 470   /* move the first item */
 471   if( index2-index1 >1 )
 472     {
 473       item2 = g_list_nth(c->playlist.list, index2);
 474       c->playlist.list = g_list_remove(c->playlist.list, data1);
 475       c->playlist.list = g_list_insert_before(c->playlist.list, item2, data1);
 476     }
 477
 478   /* increment the playlist id, so we dont retrives a new playlist */
 479   c->playlist.id++;
 480
 481 #else
 482   c->need_update = TRUE;
 483 #endif
 484
 485   /* call playlist updated callback */
 486   D("move> new_index=%d, old_index=%d\n", new_index, old_index);
 487   mpdclient_playlist_callback(c, PLAYLIST_EVENT_MOVE, (gpointer) &new_index);
 488
 489   return 0;
 490 }
 491
 492 gint
 493 mpdclient_cmd_save_playlist_utf8(mpdclient_t *c, gchar *filename_utf8)
 494 {
 495   gint retval = 0;
 496
 497   mpd_sendSaveCommand(c->connection, filename_utf8);
 498   if( (retval=mpdclient_finish_command(c)) == 0 )
 499     mpdclient_browse_callback(c, BROWSE_PLAYLIST_SAVED, NULL);
 500   return retval;
 501 }
 502
 503 gint
 504 mpdclient_cmd_save_playlist(mpdclient_t *c, gchar *filename)
 505 {
 506   gint retval = 0;
 507   gchar *filename_utf8 = locale_to_utf8(filename);
 508
 509   retval = mpdclient_cmd_save_playlist_utf8(c, filename);
 510   g_free(filename_utf8);
 511   return retval;
 512 }
 513
 514 gint
 515 mpdclient_cmd_load_playlist_utf8(mpdclient_t *c, gchar *filename_utf8)
 516 {
 517   mpd_sendLoadCommand(c->connection, filename_utf8);
 518   c->need_update = TRUE;
 519   return mpdclient_finish_command(c);
 520 }
 521
 522 gint
 523 mpdclient_cmd_delete_playlist_utf8(mpdclient_t *c, gchar *filename_utf8)
 524 {
 525   gint retval = 0;
 526
 527   mpd_sendRmCommand(c->connection, filename_utf8);
 528   if( (retval=mpdclient_finish_command(c)) == 0 )
 529     mpdclient_browse_callback(c, BROWSE_PLAYLIST_DELETED, NULL);
 530   return retval;
 531 }
 532
 533 gint
 534 mpdclient_cmd_delete_playlist(mpdclient_t *c, gchar *filename)
 535 {
 536   gint retval = 0;
 537   gchar *filename_utf8 = locale_to_utf8(filename);
 538
 539   retval = mpdclient_cmd_delete_playlist_utf8(c, filename_utf8);
 540   g_free(filename_utf8);
 541   return retval;
 542 }
 543
 544
 545 /****************************************************************************/
 546 /*** Callback managment functions *******************************************/
 547 /****************************************************************************/
 548 static void
 549 do_list_callbacks(mpdclient_t *c, GList *list, gint event, gpointer data)
 550 {
 551   while(list)
 552     {
 553       mpdc_list_cb_t fn = list->data;
 554
 555       fn(c, event, data);
 556       list=list->next;
 557     }
 558 }
 559
 560 void
 561 mpdclient_playlist_callback(mpdclient_t *c, int event, gpointer data)
 562 {
 563   do_list_callbacks(c, c->playlist_callbacks, event, data);
 564 }
 565
 566 void
 567 mpdclient_install_playlist_callback(mpdclient_t *c,mpdc_list_cb_t cb)
 568 {
 569   c->playlist_callbacks = g_list_append(c->playlist_callbacks, cb);
 570 }
 571
 572 void
 573 mpdclient_remove_playlist_callback(mpdclient_t *c, mpdc_list_cb_t cb)
 574 {
 575   c->playlist_callbacks = g_list_remove(c->playlist_callbacks, cb);
 576 }
 577
 578 void
 579 mpdclient_browse_callback(mpdclient_t *c, int event, gpointer data)
 580 {
 581   do_list_callbacks(c, c->browse_callbacks, event, data);
 582 }
 583
 584
 585 void
 586 mpdclient_install_browse_callback(mpdclient_t *c,mpdc_list_cb_t cb)
 587 {
 588   c->browse_callbacks = g_list_append(c->browse_callbacks, cb);
 589 }
 590
 591 void
 592 mpdclient_remove_browse_callback(mpdclient_t *c, mpdc_list_cb_t cb)
 593 {
 594   c->browse_callbacks = g_list_remove(c->browse_callbacks, cb);
 595 }
 596
 597 void
 598 mpdclient_install_error_callback(mpdclient_t *c, mpdc_error_cb_t cb)
 599 {
 600   c->error_callbacks = g_list_append(c->error_callbacks, cb);
 601 }
 602
 603 void
 604 mpdclient_remove_error_callback(mpdclient_t *c, mpdc_error_cb_t cb)
 605 {
 606   c->error_callbacks = g_list_remove(c->error_callbacks, cb);
 607 }
 608
 609 /****************************************************************************/
 610 /*** Playlist managment functions *******************************************/
 611 /****************************************************************************/
 612
 613 gint
 614 mpdclient_playlist_free(mpdclient_playlist_t *playlist)
 615 {
 616   GList *list = g_list_first(playlist->list);
 617
 618   while(list)
 619     {
 620       mpd_Song *song = (mpd_Song *) list->data;
 621       mpd_freeSong(song);
 622       list=list->next;
 623     }
 624   g_list_free(playlist->list);
 625   memset(playlist, 0, sizeof(mpdclient_playlist_t));
 626   return 0;
 627 }
 628
 629 /* update playlist */
 630 gint
 631 mpdclient_playlist_update(mpdclient_t *c)
 632 {
 633   mpd_InfoEntity *entity;
 634
 635   D("mpdclient_playlist_update() [%lld]\n", c->status->playlist);
 636
 637   if( MPD_ERROR(c) )
 638     return -1;
 639
 640   if( c->playlist.list )
 641     mpdclient_playlist_free(&c->playlist);
 642
 643   mpd_sendPlaylistInfoCommand(c->connection,-1);
 644   while( (entity=mpd_getNextInfoEntity(c->connection)) )
 645     {
 646       if(entity->type==MPD_INFO_ENTITY_TYPE_SONG)
 647         {
 648           mpd_Song *song = mpd_songDup(entity->info.song);
 649
 650           c->playlist.list = g_list_append(c->playlist.list, (gpointer) song);
 651           c->playlist.length++;
 652         }
 653       mpd_freeInfoEntity(entity);
 654     }
 655   c->playlist.id = c->status->playlist;
 656   c->song = NULL;
 657   c->playlist.updated = TRUE;
 658
 659   /* call playlist updated callbacks */
 660   mpdclient_playlist_callback(c, PLAYLIST_EVENT_UPDATED, NULL);
 661
 662   return mpdclient_finish_command(c);
 663 }
 664
 665 #ifdef ENABLE_PLCHANGES
 666
 667 gint
 668 mpdclient_compare_songs(gconstpointer a, gconstpointer b)
 669 {
 670   mpd_Song *song1 = (mpd_Song *) a;
 671   mpd_Song *song2 = (mpd_Song *) b;
 672
 673   return song1->pos - song2->pos;
 674 }
 675
 676
 677
 678 /* update playlist (plchanges) */
 679 gint
 680 mpdclient_playlist_update_changes(mpdclient_t *c)
 681 {
 682   mpd_InfoEntity *entity;
 683
 684   D("mpdclient_playlist_update_changes() [%lld -> %lld]\n",
 685     c->status->playlist, c->playlist.id);
 686
 687   if( MPD_ERROR(c) )
 688     return -1;
 689
 690   mpd_sendPlChangesCommand(c->connection, c->playlist.id);
 691
 692   while( (entity=mpd_getNextInfoEntity(c->connection)) != NULL   )
 693     {
 694       mpd_Song *song = entity->info.song;
 695
 696       if( song->pos < c->playlist.length )
 697         {
 698           GList *item = g_list_nth(c->playlist.list, song->pos);
 699
 700           /* update song */
 701           D("updating pos:%d, id=%d [%p] - %s\n",
 702             song->pos, song->id, item, song->file);
 703           mpd_freeSong((mpd_Song *) item->data);
 704           item->data = mpd_songDup(song);
 705         }
 706       else
 707         {
 708           /* add a new song */
 709           D("adding song at pos %d\n", song->pos);
 710           c->playlist.list = g_list_append(c->playlist.list,
 711                                            (gpointer) mpd_songDup(song));
 712         }
 713
 714     }
 715
 716   /* remove trailing songs */
 717   while( c->status->playlistLength < c->playlist.length )
 718     {
 719       GList *item = g_list_last(c->playlist.list);
 720
 721       /* Remove the last playlist entry */
 722       D("removing song at pos %d\n", ((mpd_Song *) item->data)->pos);
 723       mpd_freeSong((mpd_Song *) item->data);
 724       c->playlist.list = g_list_delete_link(c->playlist.list, item);
 725       c->playlist.length = g_list_length(c->playlist.list);
 726     }
 727
 728   c->song = NULL;
 729   c->playlist.id = c->status->playlist;
 730   c->playlist.updated = TRUE;
 731   c->playlist.length = g_list_length(c->playlist.list);
 732
 733   mpdclient_playlist_callback(c, PLAYLIST_EVENT_UPDATED, NULL);
 734
 735   return 0;
 736 }
 737
 738 #else
 739 gint
 740 mpdclient_playlist_update_changes(mpdclient_t *c)
 741 {
 742   return mpdclient_playlist_update(c);
 743 }
 744 #endif
 745
 746 mpd_Song *
 747 playlist_get_song(mpdclient_t *c, gint index)
 748 {
 749   return (mpd_Song *) g_list_nth_data(c->playlist.list, index);
 750 }
 751
 752 GList *
 753 playlist_lookup(mpdclient_t *c, int id)
 754 {
 755   GList *list = g_list_first(c->playlist.list);
 756
 757   while( list )
 758     {
 759       mpd_Song *song = (mpd_Song *) list->data;
 760       if( song->id == id )
 761         return list;
 762       list=list->next;
 763     }
 764   return NULL;
 765 }
 766
 767 mpd_Song *
 768 playlist_lookup_song(mpdclient_t *c, gint id)
 769 {
 770   GList *list = c->playlist.list;
 771
 772   while( list )
 773     {
 774       mpd_Song *song = (mpd_Song *) list->data;
 775       if( song->id == id )
 776         return song;
 777       list=list->next;
 778     }
 779   return NULL;
 780 }
 781
 782 gint
 783 playlist_get_index(mpdclient_t *c, mpd_Song *song)
 784 {
 785   return g_list_index(c->playlist.list, song);
 786 }
 787
 788 gint
 789 playlist_get_index_from_id(mpdclient_t *c, gint id)
 790 {
 791   return g_list_index(c->playlist.list, playlist_lookup_song(c, id));
 792 }
 793
 794 gint
 795 playlist_get_index_from_file(mpdclient_t *c, gchar *filename)
 796 {
 797   GList *list = c->playlist.list;
 798   gint i=0;
 799
 800   while( list )
 801     {
 802       mpd_Song *song = (mpd_Song *) list->data;
 803       if( strcmp(song->file, filename ) == 0 )
 804         return i;
 805       list=list->next;
 806       i++;
 807     }
 808   return -1;
 809 }
 810
 811
 812 /****************************************************************************/
 813 /*** Filelist functions *****************************************************/
 814 /****************************************************************************/
 815
 816 mpdclient_filelist_t *
 817 mpdclient_filelist_free(mpdclient_filelist_t *filelist)
 818 {
 819   GList *list = g_list_first(filelist->list);
 820
 821   D("mpdclient_filelist_free()\n");
 822   while( list!=NULL )
 823     {
 824       filelist_entry_t *entry = list->data;
 825
 826       if( entry->entity )
 827         mpd_freeInfoEntity(entry->entity);
 828       g_free(entry);
 829       list=list->next;
 830     }
 831   g_list_free(filelist->list);
 832   g_free(filelist->path);
 833   filelist->path = NULL;
 834   filelist->list = NULL;
 835   filelist->length = 0;
 836   g_free(filelist);
 837
 838   return NULL;
 839 }
 840
 841
 842 mpdclient_filelist_t *
 843 mpdclient_filelist_get(mpdclient_t *c, gchar *path)
 844 {
 845   mpdclient_filelist_t *filelist;
 846   mpd_InfoEntity *entity;
 847   gchar *path_utf8 = locale_to_utf8(path);
 848
 849   D("mpdclient_filelist_get(%s)\n", path);
 850   mpd_sendLsInfoCommand(c->connection, path_utf8);
 851   filelist = g_malloc0(sizeof(mpdclient_filelist_t));
 852   if( path && path[0] && strcmp(path, "/") )
 853     {
 854       /* add a dummy entry for ./.. */
 855       filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
 856       entry->entity = NULL;
 857       filelist->list = g_list_append(filelist->list, (gpointer) entry);
 858       filelist->length++;
 859     }
 860
 861   while( (entity=mpd_getNextInfoEntity(c->connection)) )
 862     {
 863       filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
 864
 865       entry->entity = entity;
 866       filelist->list = g_list_append(filelist->list, (gpointer) entry);
 867       filelist->length++;
 868     }
 869
 870   if( mpdclient_finish_command(c) )
 871     {
 872       g_free(path_utf8);
 873       return mpdclient_filelist_free(filelist);
 874     }
 875
 876   g_free(path_utf8);
 877   filelist->path = g_strdup(path);
 878   filelist->updated = TRUE;
 879
 880   return filelist;
 881 }
 882
 883 mpdclient_filelist_t *
 884 mpdclient_filelist_update(mpdclient_t *c, mpdclient_filelist_t *filelist)
 885 {
 886   if( filelist != NULL )
 887     {
 888       gchar *path = g_strdup(filelist->path);
 889
 890       filelist = mpdclient_filelist_free(filelist);
 891       filelist = mpdclient_filelist_get(c, path);
 892       g_free(path);
 893       return filelist;
 894     }
 895   return NULL;
 896 }
 897
 898 filelist_entry_t *
 899 mpdclient_filelist_find_song(mpdclient_filelist_t *fl, mpd_Song *song)
 900 {
 901   GList *list = g_list_first(fl->list);
 902
 903   while( list && song)
 904     {
 905       filelist_entry_t *entry = list->data;
 906       mpd_InfoEntity *entity  = entry->entity;
 907
 908       if( entity && entity->type==MPD_INFO_ENTITY_TYPE_SONG )
 909         {
 910           mpd_Song *song2 = entity->info.song;
 911
 912           if( strcmp(song->file, song2->file) == 0 )
 913             {
 914               return entry;
 915             }
 916         }
 917       list = list->next;
 918     }
 919   return NULL;
 920 }
 921
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