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<?php
/*
Copyright (c) 2001 - 2007 Ampache.org
All rights reserved.
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; version 2
of the License.
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.
*/
class LastFMSearch {
protected $base_url = "http://ws.audioscrobbler.com/1.0/album";
public $results=array(); // Array of results
private $_parser; // The XML parser
protected $_grabtags = array('coverart','large','medium','small');
private $_subTag; // Stupid hack to make things come our right
private $_currentTag; // Stupid hack to make things come out right
public function __construct() {
// Rien a faire
} // LastFMSearch
/**
* create_parser
* this sets up an XML Parser that we can use to parse the XML
* document we recieve
*/
public function create_parser() {
$this->_parser = xml_parser_create();
xml_parser_set_option($this->_parser, XML_OPTION_CASE_FOLDING, false);
xml_set_object($this->_parser, $this);
xml_set_element_handler($this->_parser, 'start_element', 'end_element');
xml_set_character_data_handler($this->_parser, 'cdata');
} // create_parser
/**
* search
* do a full search on the url they pass
*/
public function run_search($url) {
/* Create the Parser */
$this->create_parser();
$snoopy = new Snoopy;
$snoopy->fetch($url);
$contents = $snoopy->results;
if ($contents == 'Artist not found') {
debug_event('lastfm','Error: Artist not found with ' . $url,'3');
return false;
}
if (!xml_parse($this->_parser, $contents)) {
debug_event('lastfm','Error:' . sprintf('XML error: %s at line %d',xml_error_string(xml_get_error_code($this->_parser)),xml_get_current_line_number($this->_parser)),'1');
}
xml_parser_free($this->_parser);
} // run_search
/**
* search
* takes terms and a type
*/
public function search($artist,$album) {
$url = $this->base_url . '/' . urlencode($artist) . '/' . urlencode($album) . '/info.xml';
debug_event('lastfm','Searching: ' . $url,'3');
$this->run_search($url);
return $this->results;
} // search
/**
* start_element
* This function is called when we see the start of an xml element
*/
public function start_element($parser, $tag, $attributes) {
if ($tag == 'coverart') {
$this->_currentTag = $tag;
}
if ($tag == 'small' || $tag == 'medium' || $tag == 'large') {
$this->_subTag = $tag;
}
} // start_element
/**
* cdata
* This is called for the content of an XML tag
*/
public function cdata($parser, $cdata) {
if (!$this->_currentTag || !$this->_subTag || !trim($cdata)) { return false; }
$tag = $this->_currentTag;
$subtag = $this->_subTag;
$this->results[$tag][$subtag] = trim($cdata);
} // cdata
/**
* end_element
* This is called on the close of an XML tag
*/
public function end_element($parser, $tag) {
if ($tag == 'coverart') { $this->_currentTag = ''; }
} // end_element
} // end LastFMSearch
?>
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