127 lines
3.3 KiB
PHP
127 lines
3.3 KiB
PHP
<?php
|
|
/**
|
|
* @author Gasper Kozak
|
|
* @copyright 2007-2011
|
|
|
|
This file is part of WideImage.
|
|
|
|
WideImage is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
WideImage 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with WideImage; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
* @package WideImage
|
|
**/
|
|
|
|
/**
|
|
* Thrown when image format isn't supported
|
|
*
|
|
* @package Exceptions
|
|
*/
|
|
class WideImage_UnsupportedFormatException extends WideImage_Exception {}
|
|
|
|
/**
|
|
* Mapper factory
|
|
*
|
|
* @package Internals
|
|
**/
|
|
abstract class WideImage_MapperFactory
|
|
{
|
|
static protected $mappers = array();
|
|
static protected $customMappers = array();
|
|
|
|
static protected $mimeTable = array(
|
|
'image/jpg' => 'JPEG',
|
|
'image/jpeg' => 'JPEG',
|
|
'image/pjpeg' => 'JPEG',
|
|
'image/gif' => 'GIF',
|
|
'image/png' => 'PNG'
|
|
);
|
|
|
|
/**
|
|
* Returns a mapper, based on the $uri and $format
|
|
*
|
|
* @param string $uri File URI
|
|
* @param string $format File format (extension or mime-type) or null
|
|
* @return WideImage_Mapper
|
|
**/
|
|
static function selectMapper($uri, $format = null)
|
|
{
|
|
$format = self::determineFormat($uri, $format);
|
|
|
|
if (array_key_exists($format, self::$mappers))
|
|
return self::$mappers[$format];
|
|
|
|
$mapperClassName = 'WideImage_Mapper_' . $format;
|
|
|
|
if (!class_exists($mapperClassName, false))
|
|
{
|
|
$mapperFileName = WideImage::path() . 'Mapper/' . $format . '.php';
|
|
if (file_exists($mapperFileName))
|
|
require_once $mapperFileName;
|
|
}
|
|
|
|
if (class_exists($mapperClassName))
|
|
{
|
|
self::$mappers[$format] = new $mapperClassName();
|
|
return self::$mappers[$format];
|
|
}
|
|
|
|
throw new WideImage_UnsupportedFormatException("Format '{$format}' is not supported.");
|
|
}
|
|
|
|
static function registerMapper($mapper_class_name, $mime_type, $extension)
|
|
{
|
|
self::$customMappers[$mime_type] = $mapper_class_name;
|
|
self::$mimeTable[$mime_type] = $extension;
|
|
}
|
|
|
|
static function getCustomMappers()
|
|
{
|
|
return self::$customMappers;
|
|
}
|
|
|
|
static function determineFormat($uri, $format = null)
|
|
{
|
|
if ($format == null)
|
|
$format = self::extractExtension($uri);
|
|
|
|
// mime-type match
|
|
if (preg_match('~[a-z]*/[a-z-]*~i', $format))
|
|
if (isset(self::$mimeTable[strtolower($format)]))
|
|
{
|
|
return self::$mimeTable[strtolower($format)];
|
|
}
|
|
|
|
// clean the string
|
|
$format = strtoupper(preg_replace('/[^a-z0-9_-]/i', '', $format));
|
|
if ($format == 'JPG')
|
|
$format = 'JPEG';
|
|
|
|
return $format;
|
|
}
|
|
|
|
static function mimeType($format)
|
|
{
|
|
return array_search(strtoupper($format), self::$mimeTable);
|
|
}
|
|
|
|
static function extractExtension($uri)
|
|
{
|
|
$p = strrpos($uri, '.');
|
|
if ($p === false)
|
|
return '';
|
|
else
|
|
return substr($uri, $p + 1);
|
|
}
|
|
}
|