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-rw-r--r--src/tables.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/src/tables.c b/src/tables.c
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+/* 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;
+ }
+}