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Filename : image.php
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<?php
/**
* @package Joomla! 2.5/3.x
* @version 2.x
* @author 2012-2017 (c)  Denys Nosov (aka Dutch)
* @author web-site: joomla-ua.org
* @copyright This module is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.
**/

class JUImg
{
	/**
	 * @param      $url
	 * @param null $attr
	 *
	 * @return string
	 */
	public function Render($url, $attr = null)
	{
	    if($url != 'cover')
        {
    		$url = trim($url, '/');
    		$url = trim($url);
    		$url = rawurldecode($url);

    		$_error = 0;
            if(preg_match('#^(http|https|ftp)://#i', $url))
            {
    			$headers = @get_headers($url);
    			if(strpos($headers[0],'200')===false) $_error = 1;
            }
            else {
                $url = JPATH_BASE .'/'. $url;
    			if(!file_exists($url)) $_error = 1;
            }

            $imgfile    = pathinfo($url);
            $img_name   = $imgfile['filename'];

            $imgurl     = strtolower($img_name);
            $imgurl     = preg_replace("#[[:punct:]]#", "", $imgurl);
            $imgurl     = preg_replace("#[а-я]#isu", "", $imgurl);
            $imgurl     = str_replace(" +", "_", $imgurl);
            $imgurl     = str_replace(" ", "", $imgurl);
        }
        else {
            $_error     = 0;
            $img_name   = implode($attr);
            $imgurl     = 'cover';
        }

        $fext 		    = array();
        $wh 		    = array();
        $img_cache 	    = array();
        $error_image    = array();

        foreach ($attr as $whk => $whv)
		{
            if($whk == 'f') $fext[] = $whv;

            if($whk == 'w' || $whk == 'h') $wh[] = $whv;

            if($whk == 'cache') $img_cache[] = $whv;

            if($whk == 'error_image') $error_image[] = $whv;
        }

        $fext 		= implode($fext);
		$fext 		= '.'. ($fext == '' ? 'jpg' : $fext);
        $img_cache 	= implode($img_cache);
        $img_cache 	= ($img_cache == '' ? 'cache' : $img_cache);

		if($_error == 1)
        {
        	$error_image = implode($error_image);
       		$url = ($error_image == '' ? JPATH_BASE .'/libraries/julib/noimage.png' : $error_image);
		}

        $wh         = implode('x', $wh);
        $wh         = ($wh == '' ? '0' : $wh);
        $subfolder  = $img_cache .'/'. $wh .'/'. substr( strtolower( MD5($img_name) ), -1);

        $md5 = array();
        foreach ($attr as $k => $v)
        {
            $f      = explode("_", $k);
            $k      = $f[0];
            $md5[]  = $k . $v;
        }

        $target = $subfolder .'/'. substr(strtolower( $imgurl ), 0, 150) .'-'. MD5($url . implode('.', $md5)) . $fext;
        $this->MakeDirectory($dir = JPATH_BASE .'/'. $subfolder, $mode = 0777);

        if (file_exists(JPATH_BASE .'/'. $target)) {
            $outpute = $target;
        }
        else {
            $outpute = $this->Create($url, $img_cache, $target, $attr);
        }

		return  $outpute;
    }

	/**
	 * @param      $url
	 * @param      $img_cache
	 * @param      $target
	 * @param null $attr
	 *
	 * @return string
	 */
	public function Create($url, $img_cache, $target, $attr = null)
    {
        include_once( __DIR__ .'/phpthumb/phpthumb.class.php' );

        $phpThumb = new JUThumbs();
        $phpThumb->resetObject();

        $phpThumb->setParameter('config_max_source_pixels', round(max(intval(ini_get('memory_limit')), intval(get_cfg_var('memory_limit'))) * 1048576 / 6) );
        $phpThumb->setParameter('config_temp_directory', JPATH_BASE .'/'. $img_cache .'/' );

        $phpThumb->setParameter('config_cache_directory', JPATH_BASE .'/'. $img_cache .'/' );
        $phpThumb->setCacheDirectory();
        $phpThumb->setParameter('config_cache_maxfiles', '0');
        $phpThumb->setParameter('config_cache_maxsize', '0');
        $phpThumb->setParameter('config_cache_maxage', '0');
        $phpThumb->setParameter('config_nohotlink_enabled', false);

        if($url == 'cover')
        {
            $cover = array();
            foreach ($attr as $whk => $whv) {
                if($whk == 'cover') $cover[] = $whv;
            }

            $phpThumb->setSourceFilename( JPATH_BASE .'/libraries/julib/blank.png' );
            $phpThumb->setParameter('fltr', 'clr|'. implode($cover));
        }
        else {
            $phpThumb->setSourceFilename( $url );
        }

        $phpThumb->setParameter('q', '80');
        $phpThumb->setParameter('aoe', '1');
        $phpThumb->setParameter('f', 'jpg');

    	if (is_array($attr))
		{
            foreach ($attr as $k => $v)
			{
                $f = explode("_", $k);
                $k = $f[0];
            	$phpThumb->setParameter($k, $v);
            }
    	}

        $imagemagick = '';
        if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') $imagemagick = 'C:/ImageMagick/convert.exe';

        $phpThumb->setParameter('config_imagemagick_path', $imagemagick);
        $phpThumb->setParameter('config_prefer_imagemagick', true);
        $phpThumb->setParameter('config_imagemagick_use_thumbnail', true);

        $outpute = '';
        if ($phpThumb->GenerateThumbnail())
        {
        	if ($phpThumb->RenderToFile( JPATH_BASE .'/'. $target )) $outpute = $target;

            $phpThumb->purgeTempFiles();
        }

        return $outpute;
    }

	/**
	 * @param $dir
	 * @param $mode
	 *
	 * @return bool
	 */
	public function MakeDirectory($dir, $mode)
    {
        if (is_dir($dir) || @mkdir($dir,$mode))
        {
            $indexfile = $dir .'/index.html';
            $indexcontent = '<!DOCTYPE html><title></title>';

            if(!file_exists($indexfile))
            {
                $file = fopen($indexfile, 'w');
                fputs($file, $indexcontent);
                fclose($file);
            }

            return TRUE;
        }

        if ( !$this->MakeDirectory(dirname($dir), $mode) ) return FALSE;

        return @mkdir($dir,$mode);
    }
}