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56 lines
1.6 KiB
PHP
56 lines
1.6 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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* Handles Base64 (B) Header Encoding in Swift Mailer.
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*
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* @author Chris Corbyn
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*/
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class Swift_Mime_HeaderEncoder_Base64HeaderEncoder extends Swift_Encoder_Base64Encoder implements Swift_Mime_HeaderEncoder
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{
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/**
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* Get the name of this encoding scheme.
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* Returns the string 'B'.
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*
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* @return string
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*/
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public function getName()
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{
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return 'B';
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}
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/**
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* Takes an unencoded string and produces a Base64 encoded string from it.
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*
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* If the charset is iso-2022-jp, it uses mb_encode_mimeheader instead of
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* default encodeString, otherwise pass to the parent method.
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*
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* @param string $string string to encode
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* @param int $firstLineOffset
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* @param int $maxLineLength optional, 0 indicates the default of 76 bytes
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* @param string $charset
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*
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* @return string
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*/
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public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0, $charset = 'utf-8')
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{
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if (strtolower($charset) === 'iso-2022-jp') {
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$old = mb_internal_encoding();
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mb_internal_encoding('utf-8');
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$newstring = mb_encode_mimeheader($string, $charset, $this->getName(), "\r\n");
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mb_internal_encoding($old);
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return $newstring;
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}
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return parent::encodeString($string, $firstLineOffset, $maxLineLength);
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}
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}
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