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/**
** rule_list.c - deals with storage and application of rules for generating
** dynamic playlists
**
** Copyright (C) 2000 Matthew Pratt <mattpratt@yahoo.com>
**
** This software is licensed under the terms of the GNU General
** Public License (GPL). Please see the file LICENSE for details.
**/
#include "gnomp3.h"
#include "utility.h"
#include "mp3info.h"
#include "playlist.h"
#include "rule_list.h"
#include "mp3list.h"
/* extracts any rule in the given line and adds them to the global rule list */
void rule_list_load_rule(char *line)
{
char *ptr;
ptr = strstr(line, "RULE:" );
if(!ptr)return;
gnomp3.rule_list = g_list_append( gnomp3.rule_list, g_strdup(ptr + 5));
}
/*
* save all the rules in the list to the playlist file (given by fp). Each
* rule is prepended with a '#' to keep playlists compatible with other
* software (xmms).
*/
void rule_list_save_rules(FILE *fp)
{
GList *ptr = gnomp3.rule_list;
if(!ptr)
return;
fprintf( fp, "# gnomp3 rule list\n");
while(ptr){
fprintf( fp, "# RULE:%s\n", (char *)ptr->data);
ptr = ptr->next;
}
}
/*
* Add a song if it is not already in the playlist. Mark it as being from a
* rule.
*/
void rule_list_add_song(MP3 *mp3)
{
if( mp3->row_playlist != -1 ){
playlist_add_row(mp3);
}else{
playlist_add_row(mp3);
mp3->from_rule = TRUE;
}
}
/*
* applies every rule in the global rule list. All rule generated entries are
* first removed from the playlist
*/
void rule_list_apply()
{
GList *ptr;
gtk_clist_freeze(GTK_CLIST(gnomp3.play_clist));
playlist_clear_rules();
for( ptr = gnomp3.rule_list; ptr; ptr = ptr->next){
mp3list_search_by_name( ptr->data, rule_list_add_song );
}
playlist_update_display();
gtk_clist_thaw(GTK_CLIST(gnomp3.play_clist));
}
/* clear all the entries from the global rule list */
void rule_list_clear()
{
g_list_foreach( gnomp3.rule_list, (GFunc)g_free, NULL );
g_list_free (gnomp3.rule_list);
gnomp3.rule_list = NULL;
}
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