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<?php |
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/** |
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* fast-image-size image type base |
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* @package fast-image-size |
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* @copyright (c) Marc Alexander <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FastImageSize\Image; |
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class Factory |
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{ |
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//In order of which they will be tried if type is unknown |
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//Changing order might have performance impact and/or type detection mismatch |
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private static $supportedTypes = array( |
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'jpeg' => array( |
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'jpeg', |
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'jpg', |
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'jpe', |
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'jif', |
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'jfif', |
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'jfi', |
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), |
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'png' => array('png'), |
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'gif' => array('gif'), |
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'jp2' => array( |
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'jp2', |
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'j2k', |
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'jpf', |
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'jpg2', |
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'jpx', |
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'jpm', |
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), |
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'psd' => array( |
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'psd', |
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'photoshop', |
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), |
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'bmp' => array('bmp'), |
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'tif' => array( |
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'tif', |
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'tiff', |
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), |
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'iff' => array( |
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'iff', |
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'x-iff', |
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), |
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'ico' => array( |
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'ico', |
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'vnd.microsoft.icon', |
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'x-icon', |
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'icon', |
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), |
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'wbmp' => array( |
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'wbm', |
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'wbmp', |
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'vnd.wap.wbmp', |
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) |
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); |
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/** |
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* Create image object from filepath |
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* |
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* @param string $imageType |
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* |
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* @return string classname |
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*/ |
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public static function getClassname($imageType) |
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{ |
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return __NAMESPACE__.'\\Type'.ucfirst($imageType); |
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} |
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/** |
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* Get type from filepath extension |
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* |
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* @param string $filepath |
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* |
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* @return string|false imagetype or false if not found |
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*/ |
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public static function getExtensionType($filepath) |
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{ |
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$extension = strtolower(pathinfo(parse_url($filepath, PHP_URL_PATH), PATHINFO_EXTENSION)); |
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if (empty($extension)) { |
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return false; |
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} |
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//Find approriate type of extension and instantiate Type object |
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foreach (self::$supportedTypes as $imageType => $extensions) { |
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if (in_array($extension, $extensions)) { |
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return $imageType; |
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} |
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} |
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return false; |
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} |
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/** |
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* Create image object from filepath |
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* |
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* @param string $filepath |
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* |
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* @return TypeInterface|null |
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*/ |
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public static function create($filepath) |
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{ |
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$imageType = self::getExtensionType($filepath); |
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if ($imageType !== false) { |
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$className = self::getClassname($imageType); |
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return new $className($filepath); |
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} |
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//Could not find type, try matching type |
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return self::detectAndCreate($filepath); |
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} |
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/** |
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* Detect image type by trials and create appropriate TypeInterface object |
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* |
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* @param string $filepath |
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* |
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* @return TypeInterface|null |
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*/ |
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public static function detectAndCreate($filepath) |
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{ |
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// Jpeg type uses the most bytes, so grab the maximum image bytes we could need |
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$image = new TypeJpeg($filepath); |
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$maxedSizedHeader = $image->getHeaderPart(); |
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foreach (self::$supportedTypes as $imageType => $extensions) { |
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$className = self::getClassname($imageType); |
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$image = new $className($filepath); |
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//Set header from the maxed header to prevent multiple byte fetching of same file |
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$image->setHeader($maxedSizedHeader); |
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if ($image->isTypeMatch()) { |
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return $image; |
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} |
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} |
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//Unsupported extension and/or could not match the type signature |
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return null; |
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} |
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} |
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loumray /
fastimagesize
