<?php
/**
 * Google Image Parser
 *
 * Lookup cover images from Google
 *
 * @package Engines
 * @author  Andreas Götz    <hide@address.com>
 * @link    http://images.google.com  Google image search
 * @version $Id: google.php,v 1.7 2008/01/08 19:38:55 andig2 Exp $
 */

$GLOBALS['googleServer']	= 'http://images.google.com';

/**
 * Get meta information about the engine
 *
 * @todo    Include image search capabilities etc in meta information
 */
function googleMeta()
{
    return array('name' => 'Google', 'stable' => 1);
}

/**
 * Search an image on Google
 *
 * Searches for a given title on the google and returns the found links in
 * an array
 *
 * @param   string    The search string
 * @return  array     Associative array with id and title
 */
function googleSearch($title)
{
    global $googleServer;
    global $CLIENTERROR;

    $resp = httpClient($googleServer.'/images?q='.urlencode($title), 1);
    if (!$resp['success']) $CLIENTERROR .= $resp['error']."\n";

/* 	Google changed Image search site (end of June 2006)
	link is now found in javascript only and looks like: (without newlines and spaces)
    
	dyn.Img("http://www.luds.net/gwall5.php&h=600&w=800&sz=62&hl=de&start=1",
			"",
			"ehsHcj85v2n-OM:",
			"www.luds.net/fond_ecrans/wBart%2520%26%2520Homer%25204.gif",
			"142",
			"106",
			"wBart &amp; <b>Homer</b> 4.gif",
			"",
			"",
			"800 x 600 Pixel - 62k",
			"gif",
			"www.luds.net",
			"",
			"");

	The Thumb-URL of this example is:
	http://images.google.com/images?q=tbn:ehsHcj85v2n-OM:www.luds.net/fond_ecrans/wBart%2520%26%2520Homer%25204.gif
*/

    $result = array();
    if (preg_match_all('/dyn.Img\(".*?&h=(\d+)&w=(\d+).*?",".*?","(.*?)","(.*?)",.*?\);/', $resp['data'], $data, PREG_SET_ORDER ))
    {
        foreach ($data as $row) 
        {
            $info = array();
            $info['title']      = $row[2].'x'.$row[1];      // width x height
            $info['imgsmall']   = $googleServer.'/images?q=tbn:'.$row[3].$row[4];    // small thumbnail url
            $info['coverurl']   = $row[4];                  // resulting target url
            $result[]           = $info;
        }
    }
    
    return $result;
}

?>