Subversion-Projekte lars-tiefland.laravel_shop

<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\Mime\Encoder;

use Symfony\Component\Mime\CharacterStream;

/**

 * @author Chris Corbyn

 */

final class Rfc2231Encoder implements EncoderInterface

{

    /**

     * Takes an unencoded string and produces a string encoded according to RFC 2231 from it.

     */

    public function encodeString(string $string, ?string $charset = 'utf-8', int $firstLineOffset = 0, int $maxLineLength = 0): string

    {

        $lines = [];

        $lineCount = 0;

        $lines[] = '';

        $currentLine = &$lines[$lineCount++];

        if (0 >= $maxLineLength) {

            $maxLineLength = 75;

        }

        $charStream = new CharacterStream($string, $charset);

        $thisLineLength = $maxLineLength - $firstLineOffset;

        while (null !== $char = $charStream->read(4)) {

            $encodedChar = rawurlencode($char);

            if ('' !== $currentLine && \strlen($currentLine.$encodedChar) > $thisLineLength) {

                $lines[] = '';

                $currentLine = &$lines[$lineCount++];

                $thisLineLength = $maxLineLength;

            }

            $currentLine .= $encodedChar;

        }

        return implode("\r\n", $lines);

    }

}