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Diffstat (limited to '')
| -rw-r--r-- | src/tables.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/tables.c b/src/tables.c new file mode 100644 index 000000000..ef922e1c2 --- /dev/null +++ b/src/tables.c @@ -0,0 +1,210 @@ +/* the Music Player Daemon (MPD) + * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) + * This project's homepage is: http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include "tables.h" +#include "list.h" +#include "command.h" +#include "utils.h" +#include "myfprintf.h" + +#include <string.h> + +#define TABLES_ARTIST "artist" +#define TABLES_ALBUM "album" + +List * albumTable; +List * artistTable; + +typedef struct _ArtistData { + int songs; + List * albums; +} ArtistData; + +ArtistData * newArtistData() { + ArtistData * ad = malloc(sizeof(ArtistData)); + + ad->songs = 0; + ad->albums = makeList(free); + + return ad; +} + +void freeArtistData(ArtistData * ad) { + freeList(ad->albums); +} + +void initTables() { + albumTable = makeList(free); + artistTable = makeList((ListFreeDataFunc *)freeArtistData); +} + +void closeTables() { + freeList(albumTable); + freeList(artistTable); +} + +void addSongToSomeAlbumTable(List * table, Song * song) { + void * songs; + if(!song->tag) return; + if(!song->tag->album || !strlen(song->tag->album)) return; + if(!findInList(table,song->tag->album,&songs)) { + songs = malloc(sizeof(int)); + *((int *)songs) = 0; + insertInList(table,song->tag->album,songs); + } + (*((int *)songs))++; +} + +void addSongToAlbumTable(Song * song) { + addSongToSomeAlbumTable(albumTable,song); +} + +void addSongToArtistTable(Song * song) { + void * artist; + if(!song->tag) return; + if(!song->tag->artist || !strlen(song->tag->artist)) return; + if(!findInList(artistTable,song->tag->artist,&artist)) { + artist = newArtistData(); + insertInList(artistTable,song->tag->artist,artist); + } + ((ArtistData *)artist)->songs++; + addSongToSomeAlbumTable(((ArtistData *)artist)->albums,song); +} + +void addSongToTables(Song * song) { + addSongToAlbumTable(song); + addSongToArtistTable(song); +} + +void removeSongFromSomeAlbumTable(List * table, Song * song) { + void * songs; + + if(!song->tag) return; + if(!song->tag->album || !strlen(song->tag->album)) return; + if(findInList(table,song->tag->album,&songs)) { + (*((int *)songs))--; + if(*((int *)songs)<=0) { + deleteFromList(table,song->tag->album); + } + } +} + +void removeSongFromAlbumTable(Song * song) { + removeSongFromSomeAlbumTable(albumTable,song); +} + +void removeSongFromArtistTable(Song * song) { + void * artist; + + if(!song->tag) return; + if(!song->tag->artist || !strlen(song->tag->artist)) return; + if(findInList(artistTable,song->tag->artist,&artist)) { + removeSongFromSomeAlbumTable(((ArtistData *)artist)->albums, + song); + ((ArtistData*)artist)->songs--; + if(((ArtistData *)artist)->songs<=0) { + deleteFromList(artistTable,song->tag->artist); + } + } +} + +void removeASongFromTables(Song * song) { + removeSongFromAlbumTable(song); + removeSongFromArtistTable(song); +} + +void removeSongsFromTables(SongList * songList) { + ListNode * node = songList->firstNode; + Song * song; + + while(node) { + song = (Song *)node->data; + removeASongFromTables(song); + node = node->nextNode; + } +} + +unsigned long numberOfSongs() { + return 0; +} + +unsigned long numberOfArtists() { + return artistTable->numberOfNodes; +} + +unsigned long numberOfAlbums() { + return albumTable->numberOfNodes; +} + +int printAllArtists(FILE * fp) { + ListNode * node = artistTable->firstNode; + + while(node) { + myfprintf(fp,"Artist: %s\n",node->key); + node = node->nextNode; + } + + return 0; +} + +int printAllAlbums(FILE * fp, char * artist) { + if(artist==NULL) { + ListNode * node = albumTable->firstNode; + + while(node) { + myfprintf(fp,"Album: %s\n",node->key); + node = node->nextNode; + } + } + else { + void * ad; + + if(findInList(artistTable,artist,&ad)) { + ListNode * node = ((ArtistData *)ad)->albums->firstNode; + while(node) { + myfprintf(fp,"Album: %s\n",node->key); + node = node->nextNode; + } + } + else { + myfprintf(fp,"%s artist \"%s\" not found\n", + COMMAND_RESPOND_ERROR,artist); + return -1; + } + } + + return 0; +} + +int printAllKeysOfTable(FILE * fp, char * table, char * arg1) { + if(strcmp(table,TABLES_ARTIST)==0) { + if(arg1!=NULL) { + myfprintf(fp,"%s %s table takes no args\n",COMMAND_RESPOND_ERROR,table); + return -1; + } + return printAllArtists(fp); + } + else if(strcmp(table,TABLES_ALBUM)==0) { + return printAllAlbums(fp,arg1); + } + else { + myfprintf(fp,"%s table \"%s\" does not exist or not available for listing\n",COMMAND_RESPOND_ERROR,table); + return -1; + } +} |