import from SF CVS

git-svn-id: https://svn.musicpd.org/mpd/trunk@1 09075e82-0dd4-0310-85a5-a0d7c8717e4f

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;
+	}
+}