Initial revision 6759
[qball-mpd.git] / src / .svn / text-base / metadataChunk.c.svn-base
blobbc5118fd01b0e78662a1171fe3b373b283b8f851
1 /* the Music Player Daemon (MPD)
2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
3  * This project's homepage is: http://www.musicpd.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  */
19 #include "metadataChunk.h"
20 #include "gcc.h"
22 #include <string.h>
24 static void initMetadataChunk(MetadataChunk * chunk)
26         chunk->name = -1;
27         chunk->artist = -1;
28         chunk->album = -1;
29         chunk->title = -1;
32 #define dupElementToTag(item, element) { \
33         if(element >= 0 && element < METADATA_BUFFER_LENGTH) { \
34                 addItemToMpdTag(ret, item, chunk->buffer+element); \
35         } \
38 MpdTag *metadataChunkToMpdTagDup(MetadataChunk * chunk)
40         MpdTag *ret = newMpdTag();
42         chunk->buffer[METADATA_BUFFER_LENGTH - 1] = '\0';
44         dupElementToTag(TAG_ITEM_NAME, chunk->name);
45         dupElementToTag(TAG_ITEM_TITLE, chunk->title);
46         dupElementToTag(TAG_ITEM_ARTIST, chunk->artist);
47         dupElementToTag(TAG_ITEM_ALBUM, chunk->album);
49         return ret;
52 #define copyStringToChunk(string, element) { \
53         if(element < 0 && string && (slen = strlen(string)) && \
54                         pos < METADATA_BUFFER_LENGTH-1) \
55         { \
56                 size_t len = slen; \
57                 size_t max = METADATA_BUFFER_LENGTH - 1 - pos; \
58                 if (mpd_unlikely(len > max)) \
59                         len = max; \
60                 memcpy(chunk->buffer+pos, string, len); \
61                 *(chunk->buffer+pos+len) = '\0'; \
62                 element = pos; \
63                 pos += slen+1; \
64         } \
67 void copyMpdTagToMetadataChunk(MpdTag * tag, MetadataChunk * chunk)
69         int pos = 0;
70         int slen;
71         int i;
73         initMetadataChunk(chunk);
75         if (!tag)
76                 return;
78         for (i = 0; i < tag->numOfItems; i++) {
79                 switch (tag->items[i].type) {
80                 case TAG_ITEM_NAME:
81                         copyStringToChunk(tag->items[i].value, chunk->name);
82                         break;
83                 case TAG_ITEM_TITLE:
84                         copyStringToChunk(tag->items[i].value, chunk->title);
85                         break;
86                 case TAG_ITEM_ARTIST:
87                         copyStringToChunk(tag->items[i].value, chunk->artist);
88                         break;
89                 case TAG_ITEM_ALBUM:
90                         copyStringToChunk(tag->items[i].value, chunk->album);
91                         break;
92                 }
93         }