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