/**
* Returns the path to the library
*
* @return string
*/
static function path()
{
if (self::$path === null) {
self::$path = dirname(__FILE__) . DIRECTORY_SEPARATOR;
}
return self::$path;
}
static function get($operationName)
{
$lcname = strtolower($operationName);
if (!isset(self::$cache[$lcname])) {
$opClassName = "GDImage_Operation_" . $operationName;
if (!class_exists($opClassName, false)) {
$fileName = GDImage::path() . 'Operation/' . ucfirst($operationName) . '.php';
if (file_exists($fileName)) {
require_once $fileName;
} else {
JError::raiseError(500, JText::sprintf('JLIB_GDIMAGE_ERROR_LOAD_OPERATION', $operationName));
return false;
}
}
self::$cache[$lcname] = new $opClassName();
}
return self::$cache[$lcname];
}
/**
* Returns a mapper, based on the $uri and $format
*
* @param string $uri File URI
* @param string $format File format (extension or mime-type) or null
* @return GDImage_Mapper
**/
static function selectMapper($uri, $format = null)
{
$format = self::determineFormat($uri, $format);
if (array_key_exists($format, self::$mappers)) {
return self::$mappers[$format];
}
$mapperClassName = 'GDImage_Mapper_' . $format;
if (!class_exists($mapperClassName, false)) {
$mapperFileName = GDImage::path() . 'Mapper/' . $format . '.php';
if (file_exists($mapperFileName)) {
require_once $mapperFileName;
}
}
if (class_exists($mapperClassName, false)) {
self::$mappers[$format] = new $mapperClassName();
return self::$mappers[$format];
}
JError::raiseError(500, JText::sprintf('JLIB_GDIMAGE_ERROR_FORMAT_NOT_SUPPORTED', $format));
}
