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<?php /* * This file is part of SwiftMailer. * (c) 2004-2009 Chris Corbyn * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /** * Standard factory for creating CharacterReaders. * * @author Chris Corbyn */ class Swift_CharacterReaderFactory_SimpleCharacterReaderFactory implements Swift_CharacterReaderFactory { /** * A map of charset patterns to their implementation classes. * * @var array */ private static $_map = array(); /** * Factories which have already been loaded. * * @var Swift_CharacterReaderFactory[] */ private static $_loaded = array(); /** * Creates a new CharacterReaderFactory. */ public function __construct() { $this->init(); } public function __wakeup() { $this->init(); } public function init() { if (count(self::$_map) > 0) { return; } $prefix = 'Swift_CharacterReader_'; $singleByte = array( 'class' => $prefix.'GenericFixedWidthReader', 'constructor' => array(1), ); $doubleByte = array( 'class' => $prefix.'GenericFixedWidthReader', 'constructor' => array(2), ); $fourBytes = array( 'class' => $prefix.'GenericFixedWidthReader', 'constructor' => array(4), ); // Utf-8 self::$_map['utf-?8'] = array( 'class' => $prefix.'Utf8Reader', 'constructor' => array(), ); //7-8 bit charsets self::$_map['(us-)?ascii'] = $singleByte; self::$_map['(iso|iec)-?8859-?[0-9]+'] = $singleByte; self::$_map['windows-?125[0-9]'] = $singleByte; self::$_map['cp-?[0-9]+'] = $singleByte; self::$_map['ansi'] = $singleByte; self::$_map['macintosh'] = $singleByte; self::$_map['koi-?7'] = $singleByte; self::$_map['koi-?8-?.+'] = $singleByte; self::$_map['mik'] = $singleByte; self::$_map['(cork|t1)'] = $singleByte; self::$_map['v?iscii'] = $singleByte; //16 bits self::$_map['(ucs-?2|utf-?16)'] = $doubleByte; //32 bits self::$_map['(ucs-?4|utf-?32)'] = $fourBytes; // Fallback self::$_map['.*'] = $singleByte; } /** * Returns a CharacterReader suitable for the charset applied. * * @param string $charset * * @return Swift_CharacterReader */ public function getReaderFor($charset) { $charset = trim(strtolower($charset)); foreach (self::$_map as $pattern => $spec) { $re = '/^'.$pattern.'$/D'; if (preg_match($re, $charset)) { if (!array_key_exists($pattern, self::$_loaded)) { $reflector = new ReflectionClass($spec['class']); if ($reflector->getConstructor()) { $reader = $reflector->newInstanceArgs($spec['constructor']); } else { $reader = $reflector->newInstance(); } self::$_loaded[$pattern] = $reader; } return self::$_loaded[$pattern]; } } } }