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<?php |
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/** |
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##DOC-SIGNATURE## |
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This file is part of WideImage. |
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WideImage is free software; you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License as published by |
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the Free Software Foundation; either version 2.1 of the License, or |
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(at your option) any later version. |
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WideImage is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public License |
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along with WideImage; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* @package WideImage |
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**/ |
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namespace WideImage; |
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use WideImage\Mapper; |
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use WideImage\Exception\UnsupportedFormatException; |
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/** |
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* Mapper factory |
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* |
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* @package Internals |
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**/ |
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abstract class MapperFactory |
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{ |
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static protected $mappers = array(); |
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static protected $customMappers = array(); |
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static protected $mimeTable = array( |
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'image/jpg' => 'JPEG', |
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'image/jpeg' => 'JPEG', |
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'image/pjpeg' => 'JPEG', |
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'image/gif' => 'GIF', |
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'image/png' => 'PNG', |
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'image/webp' => 'WEBP' |
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); |
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/** |
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* Returns a mapper, based on the $uri and $format |
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* |
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* @param string $uri File URI |
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* @param string $format File format (extension or mime-type) or null |
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* @return mixed |
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**/ |
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public static function selectMapper($uri, $format = null) |
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{ |
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$format = self::determineFormat($uri, $format); |
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if (array_key_exists($format, self::$mappers)) { |
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return self::$mappers[$format]; |
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} |
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$mapperClassName = '\\WideImage\\Mapper\\' . $format; |
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// why not use autoloading? |
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// if (!class_exists($mapperClassName, false)) { |
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if (!class_exists($mapperClassName)) { |
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throw new UnsupportedFormatException("Format '{$format}' is not supported."); |
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} |
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if (class_exists($mapperClassName)) { |
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self::$mappers[$format] = new $mapperClassName(); |
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return self::$mappers[$format]; |
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} |
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} |
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public static function registerMapper($mapper_class_name, $mime_type, $extension) |
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{ |
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self::$customMappers[$mime_type] = $mapper_class_name; |
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self::$mimeTable[$mime_type] = $extension; |
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} |
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public static function getCustomMappers() |
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{ |
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return self::$customMappers; |
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} |
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public static function determineFormat($uri, $format = null) |
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{ |
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if ($format == null) { |
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$format = self::extractExtension($uri); |
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} |
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// mime-type match |
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if (preg_match('~[a-z]*/[a-z-]*~i', $format)) { |
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if (isset(self::$mimeTable[strtolower($format)])) { |
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return self::$mimeTable[strtolower($format)]; |
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} |
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} |
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// clean the string |
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$format = strtoupper(preg_replace('/[^a-z0-9_-]/i', '', $format)); |
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if ($format == 'JPG') { |
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$format = 'JPEG'; |
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} |
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return $format; |
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} |
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public static function mimeType($format) |
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{ |
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$format = strtoupper($format); |
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if ($format == 'JPG') { |
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$format = 'JPEG'; |
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} |
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return array_search($format, self::$mimeTable); |
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} |
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public static function extractExtension($uri) |
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{ |
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$p = strrpos($uri, '.'); |
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if ($p === false) { |
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return ''; |
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} |
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return substr($uri, $p + 1); |
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} |
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} |
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XOOPS /
XoopsCore25
Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a
@returnannotation as described here.