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Base64ContentEncoder.php
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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. */ /** * Handles Base 64 Transfer Encoding in Swift Mailer. * * @author Chris Corbyn */ class Swift_Mime_ContentEncoder_Base64ContentEncoder extends Swift_Encoder_Base64Encoder implements Swift_Mime_ContentEncoder { /** * Encode stream $in to stream $out. * * @param Swift_OutputByteStream $os * @param Swift_InputByteStream $is * @param int $firstLineOffset * @param int $maxLineLength, optional, 0 indicates the default of 76 bytes */ public function encodeByteStream(Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0, $maxLineLength = 0) { if (0 >= $maxLineLength || 76 < $maxLineLength) { $maxLineLength = 76; } $remainder = 0; while (false !== $bytes = $os->read(8190)) { $encoded = base64_encode($bytes); $encodedTransformed = ''; $thisMaxLineLength = $maxLineLength - $remainder - $firstLineOffset; while ($thisMaxLineLength < strlen($encoded)) { $encodedTransformed .= substr($encoded, 0, $thisMaxLineLength)."\r\n"; $firstLineOffset = 0; $encoded = substr($encoded, $thisMaxLineLength); $thisMaxLineLength = $maxLineLength; $remainder = 0; } if (0 < $remainingLength = strlen($encoded)) { $remainder += $remainingLength; $encodedTransformed .= $encoded; $encoded = null; } $is->write($encodedTransformed); } } /** * Get the name of this encoding scheme. * Returns the string 'base64'. * * @return string */ public function getName() { return 'base64'; } }
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