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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* 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 "tagTracker.h"
#include "tag.h"
#include "tree.h"
#include "utils.h"
#include "myfprintf.h"
static Tree *tagTrees[TAG_NUM_OF_ITEM_TYPES];
typedef struct tagTrackerItem {
int count;
mpd_sint8 visited;
} TagTrackerItem;
char *getTagItemString(int type, char *string)
{
TreeIterator iter;
if (tagTrees[type] == NULL)
{
tagTrees[type] = MakeTree((TreeCompareKeyFunction)strcmp,
(TreeFreeFunction)free,
(TreeFreeFunction)free);
}
if (FindInTree(tagTrees[type], string, &iter))
{
((TagTrackerItem *)GetTreeKeyData(&iter)->data)->count++;
return (char *)GetTreeKeyData(&iter)->key;
}
else
{
TagTrackerItem *item = xmalloc(sizeof(TagTrackerItem));
char *key = xstrdup(string);
item->count = 1;
item->visited = 0;
InsertInTree(tagTrees[type], key, item);
return key;
}
}
void removeTagItemString(int type, char *string)
{
TreeIterator iter;
assert(string);
assert(tagTrees[type]);
if (tagTrees[type] == NULL)
return;
if (FindInTree(tagTrees[type], string, &iter))
{
TagTrackerItem * item =
(TagTrackerItem *)GetTreeKeyData(&iter)->data;
item->count--;
if (item->count <= 0)
RemoveFromTreeByIterator(tagTrees[type], &iter);
}
if (GetTreeSize(tagTrees[type]) == 0)
{
FreeTree(tagTrees[type]);
tagTrees[type] = NULL;
}
}
int getNumberOfTagItems(int type)
{
if (tagTrees[type] == NULL)
return 0;
return GetTreeSize(tagTrees[type]);
}
void resetVisitedFlagsInTagTracker(int type)
{
TreeIterator iter;
if (!tagTrees[type])
return;
for (SetTreeIteratorToBegin(tagTrees[type], &iter);
!IsTreeIteratorAtEnd(&iter);
IncrementTreeIterator(&iter))
{
((TagTrackerItem *)GetTreeKeyData(&iter)->data)->visited = 0;
}
}
void visitInTagTracker(int type, const char *str)
{
TreeIterator iter;
if (!tagTrees[type])
return;
if (!FindInTree(tagTrees[type], str, &iter))
return;
((TagTrackerItem *)GetTreeKeyData(&iter)->data)->visited = 1;
}
void printVisitedInTagTracker(int fd, int type)
{
TreeIterator iter;
TagTrackerItem * item;
if (!tagTrees[type])
return;
for (SetTreeIteratorToBegin(tagTrees[type], &iter);
!IsTreeIteratorAtEnd(&iter);
IncrementTreeIterator(&iter))
{
item = ((TagTrackerItem *)GetTreeKeyData(&iter)->data);
if (item->visited)
{
fdprintf(fd,
"%s: %s\n",
mpdTagItemKeys[type],
(char *)GetTreeKeyData(&iter)->key);
}
}
}
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