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<?php
/* vim:set tabstop=8 softtabstop=8 shiftwidth=8 noexpandtab: */
/*
Copyright (c) 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";
protected $base_url_v2 = "http://ws.audioscrobbler.com/2.0/";
protected $api_key = "d5df942424c71b754e54ce1832505ae2";
public $results=array(); // Array of results
private $_parser; // The XML parser
protected $_grabtags = array('size','coverart','large','medium','small');
private $_subTag; // Stupid hack to make things come our right
private $_currentTag; // Stupid hack to make things come out right
private $_proxy_host; // Proxy host
private $_proxy_port; // Proxy port
private $_proxy_user; // Proxy username
private $_proxy_pass; // Proxy password
public function __construct($proxy='', $port='', $user='', $pass='') {
// Rien a faire
} // LastFMSearch
/**
* setProxy
* Set the class up to search through an http proxy.
* The parameters are the proxy's hostname or IP address (a string)
* port, username, and password. These are passed directly to the
* Snoopy class when the search is done.
*/
public function setProxy($host='', $port='', $user='', $pass='') {
if($host) $this->_proxy_host = $host;
if($port) $this->_proxy_port = $port;
if($user) $this->_proxy_user = $user;
if($pass) $this->_proxy_pass = $pass;
}
/**
* 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();
$snoopy = new Snoopy;
if($this->_proxy_host)
$snoopy->proxy_host = $this->_proxy_host;
if($this->_proxy_port)
$snoopy->proxy_port = $this->_proxy_port;
if($this->_proxy_user)
$snoopy->proxy_user = $this->_proxy_user;
if($this->_proxy_pass)
$snoopy->proxy_pass = $this->_proxy_pass;
debug_event("lastfm", "proxy:".$snoopy->proxy_host.":".$snoopy->proxy_port, "5");
debug_event("lastfm", "Start get from url", "5");
$snoopy->fetch($url);
$contents = $snoopy->results;
if ($contents == 'Artist not found') {
debug_event('lastfm','Error: Artist not found with ' . $url,'3');
return false;
}
elseif($contents == 'No such album for this artist') {
debug_event('lastfm','Error: No such album for this artist 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
/**
* album_search
* takes terms and a type
*/
public function album_search($artist,$album) {
$url = $this->base_url . '/' . urlencode($artist) . '/' . urlencode($album) . '/info.xml';
debug_event('LastFM','Album Search: ' . $url,'3');
$this->run_search($url);
return $this->results;
} // album_search
/**
* artist_search
* Search for an artists information!
* This uses v2 of the API, need to update the rest of this class to use v2
*/
public function artist_search($artist) {
$url = $this->base_url_v2 . '?method=artist.getImages&artist=' . urlencode($artist) . '&limit=10';
//FIXME: This should be done by run_search
$url .= '&api_key=' . urlencode($this->api_key);
debug_event('LastFM','Album Search: ' . $url,'3');
$this->run_search($url);
return $this->results;
} // artist_search
/**
* start_element
* This function is called when we see the start of an xml element
*/
public function start_element($parser, $tag, $attributes) {
if ($tag == 'coverart' OR $tag == 'sizes') {
$this->_currentTag = $tag;
}
if ($tag == 'small' || $tag == 'medium' || $tag == 'large') {
$this->_subTag = $tag;
}
if ($tag == 'size' AND $attributes['name'] == 'original') {
if (!isset($this->results[$this->_currentTag][$tag])) {
$this->_subTag = $tag;
}
}
elseif ($tag == 'size') {
unset($this->_subTag);
}
} // start_element
/**
* cdata
* This is called for the content of an XML tag
*/
public function cdata($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') { $this->_currentTag = ''; }
if ($tag == 'sizes') { $this->_currentTag = ''; }
} // end_element
} // end LastFMSearch
?>
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