74 lines
2.0 KiB
PHP
74 lines
2.0 KiB
PHP
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<?php
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/*
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The Base 64 encoder in Swift Mailer.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//@require 'Swift/Encoder.php';
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/**
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* Handles Base 64 Encoding in Swift Mailer.
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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_Encoder_Base64Encoder implements Swift_Encoder
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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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* Base64 encoded strings have a maximum line length of 76 characters.
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* If the first line needs to be shorter, indicate the difference with
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* $firstLineOffset.
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* @param string $string to encode
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* @param int $firstLineOffset
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* @param int $maxLineLength, optional, 0 indicates the default of 76 bytes
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* @return string
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*/
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public function encodeString($string, $firstLineOffset = 0,
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$maxLineLength = 0)
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{
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if (0 >= $maxLineLength || 76 < $maxLineLength)
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{
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$maxLineLength = 76;
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}
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$encodedString = base64_encode($string);
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$firstLine = '';
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if (0 != $firstLineOffset)
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{
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$firstLine = substr(
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$encodedString, 0, $maxLineLength - $firstLineOffset
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) . "\r\n";
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$encodedString = substr(
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$encodedString, $maxLineLength - $firstLineOffset
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);
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}
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return $firstLine . trim(chunk_split($encodedString, $maxLineLength, "\r\n"));
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}
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/**
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* Does nothing.
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*/
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public function charsetChanged($charset)
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{
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}
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}
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