90 lines
2.1 KiB
PHP
90 lines
2.1 KiB
PHP
|
<?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/Encoder.php';
|
||
|
|
//@require 'Swift/CharacterStream.php';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Handles RFC 2231 specified Encoding in Swift Mailer.
|
||
|
|
* @package Swift
|
||
|
|
* @subpackage Encoder
|
||
|
|
* @author Chris Corbyn
|
||
|
|
*/
|
||
|
|
class Swift_Encoder_Rfc2231Encoder implements Swift_Encoder
|
||
|
|
{
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A character stream to use when reading a string as characters instead of bytes.
|
||
|
|
* @var Swift_CharacterStream
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
private $_charStream;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new Rfc2231Encoder using the given character stream instance.
|
||
|
|
* @param Swift_CharacterStream
|
||
|
|
*/
|
||
|
|
public function __construct(Swift_CharacterStream $charStream)
|
||
|
|
{
|
||
|
|
$this->_charStream = $charStream;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Takes an unencoded string and produces a string encoded according to
|
||
|
|
* RFC 2231 from it.
|
||
|
|
* @param string $string to encode
|
||
|
|
* @param int $firstLineOffset
|
||
|
|
* @param int $maxLineLength, optional, 0 indicates the default of 75 bytes
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function encodeString($string, $firstLineOffset = 0,
|
||
|
|
$maxLineLength = 0)
|
||
|
|
{
|
||
|
|
$lines = array(); $lineCount = 0;
|
||
|
|
$lines[] = '';
|
||
|
|
$currentLine =& $lines[$lineCount++];
|
||
|
|
|
||
|
|
if (0 >= $maxLineLength)
|
||
|
|
{
|
||
|
|
$maxLineLength = 75;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_charStream->flushContents();
|
||
|
|
$this->_charStream->importString($string);
|
||
|
|
|
||
|
|
$thisLineLength = $maxLineLength - $firstLineOffset;
|
||
|
|
|
||
|
|
while (false !== $char = $this->_charStream->read(4))
|
||
|
|
{
|
||
|
|
$encodedChar = rawurlencode($char);
|
||
|
|
if (0 != strlen($currentLine)
|
||
|
|
&& strlen($currentLine . $encodedChar) > $thisLineLength)
|
||
|
|
{
|
||
|
|
$lines[] = '';
|
||
|
|
$currentLine =& $lines[$lineCount++];
|
||
|
|
$thisLineLength = $maxLineLength;
|
||
|
|
}
|
||
|
|
$currentLine .= $encodedChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
return implode("\r\n", $lines);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Updates the charset used.
|
||
|
|
* @param string $charset
|
||
|
|
*/
|
||
|
|
public function charsetChanged($charset)
|
||
|
|
{
|
||
|
|
$this->_charStream->setCharacterSet($charset);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|