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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.
*/
//@require 'Swift/CharacterReaderFactory.php';
/**
* Standard factory for creating CharacterReaders.
* @package Swift
* @subpackage Encoder
* @author Chris Corbyn
*/
class Swift_CharacterReaderFactory_SimpleCharacterReaderFactory
implements Swift_CharacterReaderFactory
{
/**
* A map of charset patterns to their implementation classes.
* @var array
* @access private
*/
private $_map = array();
/**
* Factories which have already been loaded.
* @var Swift_CharacterReaderFactory[]
* @access private
*/
private $_loaded = array();
/**
* Creates a new CharacterReaderFactory.
*/
public function __construct()
{
$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
$this->_map['utf-?8'] = array(
'class' => $prefix . 'Utf8Reader',
'constructor' => array()
);
//7-8 bit charsets
$this->_map['(us-)?ascii'] = $singleByte;
$this->_map['(iso|iec)-?8859-?[0-9]+'] = $singleByte;
$this->_map['windows-?125[0-9]'] = $singleByte;
$this->_map['cp-?[0-9]+'] = $singleByte;
$this->_map['ansi'] = $singleByte;
$this->_map['macintosh'] = $singleByte;
$this->_map['koi-?7'] = $singleByte;
$this->_map['koi-?8-?.+'] = $singleByte;
$this->_map['mik'] = $singleByte;
$this->_map['(cork|t1)'] = $singleByte;
$this->_map['v?iscii'] = $singleByte;
//16 bits
$this->_map['(ucs-?2|utf-?16)'] = $doubleByte;
//32 bits
$this->_map['(ucs-?4|utf-?32)'] = $fourBytes;
//Fallback
$this->_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 ($this->_map as $pattern => $spec)
{
$re = '/^' . $pattern . '$/D';
if (preg_match($re, $charset))
{
if (!array_key_exists($pattern, $this->_loaded))
{
$reflector = new ReflectionClass($spec['class']);
if ($reflector->getConstructor())
{
$reader = $reflector->newInstanceArgs($spec['constructor']);
}
else
{
$reader = $reflector->newInstance();
}
$this->_loaded[$pattern] = $reader;
}
return $this->_loaded[$pattern];
}
}
}
}
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