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Edit File: PropertyValueUtil.php

<?php

/*
 * This file is part of the eluceo/iCal package.
 *
 * (c) Markus Poerschke <markus@eluceo.de>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Eluceo\iCal\Util;

class PropertyValueUtil
{
    public static function escapeValue($value)
    {
        $value = self::escapeValueAllowNewLine($value);
        $value = str_replace("\n", '\\n', $value);

return $value;
    }

public static function escapeValueAllowNewLine($value)
    {
        $value = str_replace('\\', '\\\\', $value);
        $value = str_replace('"', '\\"', $value);
        $value = str_replace(',', '\\,', $value);
        $value = str_replace(';', '\\;', $value);
        $value = str_replace(array(
            "\x00", "\x01", "\x02", "\x03", "\x04", "\x05", "\x06", "\x07",
            "\x08", "\x09", /* \n*/ "\x0B", "\x0C", "\x0D", "\x0E", "\x0F",
            "\x10", "\x11", "\x12", "\x13", "\x14", "\x15", "\x16", "\x17",
            "\x18", "\x19", "\x1A", "\x1B", "\x1C", "\x1D", "\x1E", "\x1F",
            "\x7F",
        ), '', $value);

return $value;
    }
}

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