<?php
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								/**
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								 * PHPExcel_Shared_String
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								 *
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								 * Copyright (c) 2006 - 2015 PHPExcel
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								 *
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								 * This library is free software; you can redistribute it and/or
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								 * modify it under the terms of the GNU Lesser General Public
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								 * License as published by the Free Software Foundation; either
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								 * version 2.1 of the License, or (at your option) any later version.
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								 *
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								 * This library 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 GNU
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								 * Lesser General Public License for more details.
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								 *
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								 * You should have received a copy of the GNU Lesser General Public
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								 * License along with this library; if not, write to the Free Software
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								 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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								 *
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								 * @category   PHPExcel
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								 * @package    PHPExcel_Shared
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								 * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
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								 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
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								 * @version    ##VERSION##, ##DATE##
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								 */
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								class PHPExcel_Shared_String
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								{
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								    /**    Constants                */
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								    /**    Regular Expressions        */
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								    //    Fraction
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								    const STRING_REGEXP_FRACTION    = '(-?)(\d+)\s+(\d+\/\d+)';
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								    /**
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								     * Control characters array
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								     *
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								     * @var string[]
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								     */
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								    private static $controlCharacters = array();
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								    /**
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								     * SYLK Characters array
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								     *
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								     * $var array
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								     */
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								    private static $SYLKCharacters = array();
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								    /**
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								     * Decimal separator
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								     *
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								     * @var string
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								     */
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								    private static $decimalSeparator;
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								    /**
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								     * Thousands separator
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								     *
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								     * @var string
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								     */
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								    private static $thousandsSeparator;
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								    /**
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								     * Currency code
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								     *
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								     * @var string
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								     */
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								    private static $currencyCode;
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								    /**
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								     * Is mbstring extension avalable?
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								     *
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								     * @var boolean
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								     */
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								    private static $isMbstringEnabled;
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								    /**
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								     * Is iconv extension avalable?
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								     *
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								     * @var boolean
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								     */
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								    private static $isIconvEnabled;
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								    /**
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								     * Build control characters array
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								     */
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								    private static function buildControlCharacters()
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								    {
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								        for ($i = 0; $i <= 31; ++$i) {
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								            if ($i != 9 && $i != 10 && $i != 13) {
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								                $find = '_x' . sprintf('%04s', strtoupper(dechex($i))) . '_';
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								                $replace = chr($i);
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								                self::$controlCharacters[$find] = $replace;
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								            }
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								        }
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								    }
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								    /**
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								     * Build SYLK characters array
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								     */
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								    private static function buildSYLKCharacters()
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								    {
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								        self::$SYLKCharacters = array(
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								            "\x1B 0"  => chr(0),
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								            "\x1B 1"  => chr(1),
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								            "\x1B 2"  => chr(2),
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								            "\x1B 3"  => chr(3),
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								            "\x1B 4"  => chr(4),
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								            "\x1B 5"  => chr(5),
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								            "\x1B 6"  => chr(6),
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								            "\x1B 7"  => chr(7),
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								            "\x1B 8"  => chr(8),
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								            "\x1B 9"  => chr(9),
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								            "\x1B :"  => chr(10),
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								            "\x1B ;"  => chr(11),
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								            "\x1B <"  => chr(12),
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								            "\x1B :"  => chr(13),
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								            "\x1B >"  => chr(14),
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								            "\x1B ?"  => chr(15),
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								            "\x1B!0"  => chr(16),
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								            "\x1B!1"  => chr(17),
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								            "\x1B!2"  => chr(18),
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								            "\x1B!3"  => chr(19),
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								            "\x1B!4"  => chr(20),
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								            "\x1B!5"  => chr(21),
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								            "\x1B!6"  => chr(22),
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								            "\x1B!7"  => chr(23),
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								            "\x1B!8"  => chr(24),
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								            "\x1B!9"  => chr(25),
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								            "\x1B!:"  => chr(26),
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								            "\x1B!;"  => chr(27),
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								            "\x1B!<"  => chr(28),
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								            "\x1B!="  => chr(29),
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								            "\x1B!>"  => chr(30),
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								            "\x1B!?"  => chr(31),
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								            "\x1B'?"  => chr(127),
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								            "\x1B(0"  => '€', // 128 in CP1252
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								            "\x1B(2"  => '‚', // 130 in CP1252
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								            "\x1B(3"  => 'ƒ', // 131 in CP1252
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								            "\x1B(4"  => '„', // 132 in CP1252
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								            "\x1B(5"  => '…', // 133 in CP1252
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								            "\x1B(6"  => '†', // 134 in CP1252
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								            "\x1B(7"  => '‡', // 135 in CP1252
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								            "\x1B(8"  => 'ˆ', // 136 in CP1252
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								            "\x1B(9"  => '‰', // 137 in CP1252
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								            "\x1B(:"  => 'Š', // 138 in CP1252
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								            "\x1B(;"  => '‹', // 139 in CP1252
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								            "\x1BNj"  => 'Œ', // 140 in CP1252
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								            "\x1B(>"  => 'Ž', // 142 in CP1252
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								            "\x1B)1"  => '‘', // 145 in CP1252
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								            "\x1B)2"  => '’', // 146 in CP1252
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								            "\x1B)3"  => '“', // 147 in CP1252
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								            "\x1B)4"  => '”', // 148 in CP1252
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								            "\x1B)5"  => '•', // 149 in CP1252
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								            "\x1B)6"  => '–', // 150 in CP1252
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								            "\x1B)7"  => '—', // 151 in CP1252
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								            "\x1B)8"  => '˜', // 152 in CP1252
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								            "\x1B)9"  => '™', // 153 in CP1252
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								            "\x1B):"  => 'š', // 154 in CP1252
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								            "\x1B);"  => '›', // 155 in CP1252
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								            "\x1BNz"  => 'œ', // 156 in CP1252
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								            "\x1B)>"  => 'ž', // 158 in CP1252
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								            "\x1B)?"  => 'Ÿ', // 159 in CP1252
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								            "\x1B*0"  => ' ', // 160 in CP1252
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								            "\x1BN!"  => '¡', // 161 in CP1252
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								            "\x1BN\"" => '¢', // 162 in CP1252
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								            "\x1BN#"  => '£', // 163 in CP1252
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								            "\x1BN("  => '¤', // 164 in CP1252
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								            "\x1BN%"  => '¥', // 165 in CP1252
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								            "\x1B*6"  => '¦', // 166 in CP1252
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								            "\x1BN'"  => '§', // 167 in CP1252
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								            "\x1BNH " => '¨', // 168 in CP1252
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								            "\x1BNS"  => '©', // 169 in CP1252
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								            "\x1BNc"  => 'ª', // 170 in CP1252
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								            "\x1BN+"  => '«', // 171 in CP1252
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								            "\x1B*<"  => '¬', // 172 in CP1252
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								            "\x1B*="  => '', // 173 in CP1252
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								            "\x1BNR"  => '®', // 174 in CP1252
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								            "\x1B*?"  => '¯', // 175 in CP1252
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								            "\x1BN0"  => '°', // 176 in CP1252
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								            "\x1BN1"  => '±', // 177 in CP1252
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								            "\x1BN2"  => '²', // 178 in CP1252
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								            "\x1BN3"  => '³', // 179 in CP1252
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								            "\x1BNB " => '´', // 180 in CP1252
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								            "\x1BN5"  => 'µ', // 181 in CP1252
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								            "\x1BN6"  => '¶', // 182 in CP1252
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								            "\x1BN7"  => '·', // 183 in CP1252
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								            "\x1B+8"  => '¸', // 184 in CP1252
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								            "\x1BNQ"  => '¹', // 185 in CP1252
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								            "\x1BNk"  => 'º', // 186 in CP1252
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								            "\x1BN;"  => '»', // 187 in CP1252
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								            "\x1BN<"  => '¼', // 188 in CP1252
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								            "\x1BN="  => '½', // 189 in CP1252
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								            "\x1BN>"  => '¾', // 190 in CP1252
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								            "\x1BN?"  => '¿', // 191 in CP1252
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								            "\x1BNAA" => 'À', // 192 in CP1252
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								            "\x1BNBA" => 'Á', // 193 in CP1252
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								            "\x1BNCA" => 'Â', // 194 in CP1252
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								            "\x1BNDA" => 'Ã', // 195 in CP1252
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								            "\x1BNHA" => 'Ä', // 196 in CP1252
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								            "\x1BNJA" => 'Å', // 197 in CP1252
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								            "\x1BNa"  => 'Æ', // 198 in CP1252
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						|
								            "\x1BNKC" => 'Ç', // 199 in CP1252
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						|
								            "\x1BNAE" => 'È', // 200 in CP1252
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						|
								            "\x1BNBE" => 'É', // 201 in CP1252
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						|
								            "\x1BNCE" => 'Ê', // 202 in CP1252
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						|
								            "\x1BNHE" => 'Ë', // 203 in CP1252
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								            "\x1BNAI" => 'Ì', // 204 in CP1252
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						|
								            "\x1BNBI" => 'Í', // 205 in CP1252
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								            "\x1BNCI" => 'Î', // 206 in CP1252
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								            "\x1BNHI" => 'Ï', // 207 in CP1252
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								            "\x1BNb"  => 'Ð', // 208 in CP1252
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								            "\x1BNDN" => 'Ñ', // 209 in CP1252
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								            "\x1BNAO" => 'Ò', // 210 in CP1252
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								            "\x1BNBO" => 'Ó', // 211 in CP1252
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								            "\x1BNCO" => 'Ô', // 212 in CP1252
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								            "\x1BNDO" => 'Õ', // 213 in CP1252
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								            "\x1BNHO" => 'Ö', // 214 in CP1252
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								            "\x1B-7"  => '×', // 215 in CP1252
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						|
								            "\x1BNi"  => 'Ø', // 216 in CP1252
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						|
								            "\x1BNAU" => 'Ù', // 217 in CP1252
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						|
								            "\x1BNBU" => 'Ú', // 218 in CP1252
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						|
								            "\x1BNCU" => 'Û', // 219 in CP1252
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						|
								            "\x1BNHU" => 'Ü', // 220 in CP1252
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						|
								            "\x1B-="  => 'Ý', // 221 in CP1252
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						|
								            "\x1BNl"  => 'Þ', // 222 in CP1252
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						|
								            "\x1BN{"  => 'ß', // 223 in CP1252
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						|
								            "\x1BNAa" => 'à', // 224 in CP1252
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						|
								            "\x1BNBa" => 'á', // 225 in CP1252
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						|
								            "\x1BNCa" => 'â', // 226 in CP1252
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						|
								            "\x1BNDa" => 'ã', // 227 in CP1252
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						|
								            "\x1BNHa" => 'ä', // 228 in CP1252
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						|
								            "\x1BNJa" => 'å', // 229 in CP1252
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						|
								            "\x1BNq"  => 'æ', // 230 in CP1252
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						|
								            "\x1BNKc" => 'ç', // 231 in CP1252
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						|
								            "\x1BNAe" => 'è', // 232 in CP1252
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						|
								            "\x1BNBe" => 'é', // 233 in CP1252
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						|
								            "\x1BNCe" => 'ê', // 234 in CP1252
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						|
								            "\x1BNHe" => 'ë', // 235 in CP1252
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						|
								            "\x1BNAi" => 'ì', // 236 in CP1252
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						|
								            "\x1BNBi" => 'í', // 237 in CP1252
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						|
								            "\x1BNCi" => 'î', // 238 in CP1252
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						|
								            "\x1BNHi" => 'ï', // 239 in CP1252
							 | 
						|
								            "\x1BNs"  => 'ð', // 240 in CP1252
							 | 
						|
								            "\x1BNDn" => 'ñ', // 241 in CP1252
							 | 
						|
								            "\x1BNAo" => 'ò', // 242 in CP1252
							 | 
						|
								            "\x1BNBo" => 'ó', // 243 in CP1252
							 | 
						|
								            "\x1BNCo" => 'ô', // 244 in CP1252
							 | 
						|
								            "\x1BNDo" => 'õ', // 245 in CP1252
							 | 
						|
								            "\x1BNHo" => 'ö', // 246 in CP1252
							 | 
						|
								            "\x1B/7"  => '÷', // 247 in CP1252
							 | 
						|
								            "\x1BNy"  => 'ø', // 248 in CP1252
							 | 
						|
								            "\x1BNAu" => 'ù', // 249 in CP1252
							 | 
						|
								            "\x1BNBu" => 'ú', // 250 in CP1252
							 | 
						|
								            "\x1BNCu" => 'û', // 251 in CP1252
							 | 
						|
								            "\x1BNHu" => 'ü', // 252 in CP1252
							 | 
						|
								            "\x1B/="  => 'ý', // 253 in CP1252
							 | 
						|
								            "\x1BN|"  => 'þ', // 254 in CP1252
							 | 
						|
								            "\x1BNHy" => 'ÿ', // 255 in CP1252
							 | 
						|
								        );
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get whether mbstring extension is available
							 | 
						|
								     *
							 | 
						|
								     * @return boolean
							 | 
						|
								     */
							 | 
						|
								    public static function getIsMbstringEnabled()
							 | 
						|
								    {
							 | 
						|
								        if (isset(self::$isMbstringEnabled)) {
							 | 
						|
								            return self::$isMbstringEnabled;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        self::$isMbstringEnabled = function_exists('mb_convert_encoding') ?
							 | 
						|
								            true : false;
							 | 
						|
								
							 | 
						|
								        return self::$isMbstringEnabled;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get whether iconv extension is available
							 | 
						|
								     *
							 | 
						|
								     * @return boolean
							 | 
						|
								     */
							 | 
						|
								    public static function getIsIconvEnabled()
							 | 
						|
								    {
							 | 
						|
								        if (isset(self::$isIconvEnabled)) {
							 | 
						|
								            return self::$isIconvEnabled;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // Fail if iconv doesn't exist
							 | 
						|
								        if (!function_exists('iconv')) {
							 | 
						|
								            self::$isIconvEnabled = false;
							 | 
						|
								            return false;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // Sometimes iconv is not working, and e.g. iconv('UTF-8', 'UTF-16LE', 'x') just returns false,
							 | 
						|
								        if (!@iconv('UTF-8', 'UTF-16LE', 'x')) {
							 | 
						|
								            self::$isIconvEnabled = false;
							 | 
						|
								            return false;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // Sometimes iconv_substr('A', 0, 1, 'UTF-8') just returns false in PHP 5.2.0
							 | 
						|
								        // we cannot use iconv in that case either (http://bugs.php.net/bug.php?id=37773)
							 | 
						|
								        if (!@iconv_substr('A', 0, 1, 'UTF-8')) {
							 | 
						|
								            self::$isIconvEnabled = false;
							 | 
						|
								            return false;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // CUSTOM: IBM AIX iconv() does not work
							 | 
						|
								        if (defined('PHP_OS') && @stristr(PHP_OS, 'AIX') && defined('ICONV_IMPL') && (@strcasecmp(ICONV_IMPL, 'unknown') == 0) && defined('ICONV_VERSION') && (@strcasecmp(ICONV_VERSION, 'unknown') == 0)) {
							 | 
						|
								            self::$isIconvEnabled = false;
							 | 
						|
								            return false;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // If we reach here no problems were detected with iconv
							 | 
						|
								        self::$isIconvEnabled = true;
							 | 
						|
								        return true;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    public static function buildCharacterSets()
							 | 
						|
								    {
							 | 
						|
								        if (empty(self::$controlCharacters)) {
							 | 
						|
								            self::buildControlCharacters();
							 | 
						|
								        }
							 | 
						|
								        if (empty(self::$SYLKCharacters)) {
							 | 
						|
								            self::buildSYLKCharacters();
							 | 
						|
								        }
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert from OpenXML escaped control character to PHP control character
							 | 
						|
								     *
							 | 
						|
								     * Excel 2007 team:
							 | 
						|
								     * ----------------
							 | 
						|
								     * That's correct, control characters are stored directly in the shared-strings table.
							 | 
						|
								     * We do encode characters that cannot be represented in XML using the following escape sequence:
							 | 
						|
								     * _xHHHH_ where H represents a hexadecimal character in the character's value...
							 | 
						|
								     * So you could end up with something like _x0008_ in a string (either in a cell value (<v>)
							 | 
						|
								     * element or in the shared string <t> element.
							 | 
						|
								     *
							 | 
						|
								     * @param     string    $value    Value to unescape
							 | 
						|
								     * @return     string
							 | 
						|
								     */
							 | 
						|
								    public static function ControlCharacterOOXML2PHP($value = '')
							 | 
						|
								    {
							 | 
						|
								        return str_replace(array_keys(self::$controlCharacters), array_values(self::$controlCharacters), $value);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert from PHP control character to OpenXML escaped control character
							 | 
						|
								     *
							 | 
						|
								     * Excel 2007 team:
							 | 
						|
								     * ----------------
							 | 
						|
								     * That's correct, control characters are stored directly in the shared-strings table.
							 | 
						|
								     * We do encode characters that cannot be represented in XML using the following escape sequence:
							 | 
						|
								     * _xHHHH_ where H represents a hexadecimal character in the character's value...
							 | 
						|
								     * So you could end up with something like _x0008_ in a string (either in a cell value (<v>)
							 | 
						|
								     * element or in the shared string <t> element.
							 | 
						|
								     *
							 | 
						|
								     * @param     string    $value    Value to escape
							 | 
						|
								     * @return     string
							 | 
						|
								     */
							 | 
						|
								    public static function ControlCharacterPHP2OOXML($value = '')
							 | 
						|
								    {
							 | 
						|
								        return str_replace(array_values(self::$controlCharacters), array_keys(self::$controlCharacters), $value);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Try to sanitize UTF8, stripping invalid byte sequences. Not perfect. Does not surrogate characters.
							 | 
						|
								     *
							 | 
						|
								     * @param string $value
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function SanitizeUTF8($value)
							 | 
						|
								    {
							 | 
						|
								        if (self::getIsIconvEnabled()) {
							 | 
						|
								            $value = @iconv('UTF-8', 'UTF-8', $value);
							 | 
						|
								            return $value;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        if (self::getIsMbstringEnabled()) {
							 | 
						|
								            $value = mb_convert_encoding($value, 'UTF-8', 'UTF-8');
							 | 
						|
								            return $value;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // else, no conversion
							 | 
						|
								        return $value;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Check if a string contains UTF8 data
							 | 
						|
								     *
							 | 
						|
								     * @param string $value
							 | 
						|
								     * @return boolean
							 | 
						|
								     */
							 | 
						|
								    public static function IsUTF8($value = '')
							 | 
						|
								    {
							 | 
						|
								        return $value === '' || preg_match('/^./su', $value) === 1;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Formats a numeric value as a string for output in various output writers forcing
							 | 
						|
								     * point as decimal separator in case locale is other than English.
							 | 
						|
								     *
							 | 
						|
								     * @param mixed $value
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function FormatNumber($value)
							 | 
						|
								    {
							 | 
						|
								        if (is_float($value)) {
							 | 
						|
								            return str_replace(',', '.', $value);
							 | 
						|
								        }
							 | 
						|
								        return (string) $value;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Converts a UTF-8 string into BIFF8 Unicode string data (8-bit string length)
							 | 
						|
								     * Writes the string using uncompressed notation, no rich text, no Asian phonetics
							 | 
						|
								     * If mbstring extension is not available, ASCII is assumed, and compressed notation is used
							 | 
						|
								     * although this will give wrong results for non-ASCII strings
							 | 
						|
								     * see OpenOffice.org's Documentation of the Microsoft Excel File Format, sect. 2.5.3
							 | 
						|
								     *
							 | 
						|
								     * @param string  $value    UTF-8 encoded string
							 | 
						|
								     * @param mixed[] $arrcRuns Details of rich text runs in $value
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function UTF8toBIFF8UnicodeShort($value, $arrcRuns = array())
							 | 
						|
								    {
							 | 
						|
								        // character count
							 | 
						|
								        $ln = self::CountCharacters($value, 'UTF-8');
							 | 
						|
								        // option flags
							 | 
						|
								        if (empty($arrcRuns)) {
							 | 
						|
								            $opt = (self::getIsIconvEnabled() || self::getIsMbstringEnabled()) ?
							 | 
						|
								                0x0001 : 0x0000;
							 | 
						|
								            $data = pack('CC', $ln, $opt);
							 | 
						|
								            // characters
							 | 
						|
								            $data .= self::ConvertEncoding($value, 'UTF-16LE', 'UTF-8');
							 | 
						|
								        } else {
							 | 
						|
								            $data = pack('vC', $ln, 0x09);
							 | 
						|
								            $data .= pack('v', count($arrcRuns));
							 | 
						|
								            // characters
							 | 
						|
								            $data .= self::ConvertEncoding($value, 'UTF-16LE', 'UTF-8');
							 | 
						|
								            foreach ($arrcRuns as $cRun) {
							 | 
						|
								                $data .= pack('v', $cRun['strlen']);
							 | 
						|
								                $data .= pack('v', $cRun['fontidx']);
							 | 
						|
								            }
							 | 
						|
								        }
							 | 
						|
								        return $data;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Converts a UTF-8 string into BIFF8 Unicode string data (16-bit string length)
							 | 
						|
								     * Writes the string using uncompressed notation, no rich text, no Asian phonetics
							 | 
						|
								     * If mbstring extension is not available, ASCII is assumed, and compressed notation is used
							 | 
						|
								     * although this will give wrong results for non-ASCII strings
							 | 
						|
								     * see OpenOffice.org's Documentation of the Microsoft Excel File Format, sect. 2.5.3
							 | 
						|
								     *
							 | 
						|
								     * @param string $value UTF-8 encoded string
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function UTF8toBIFF8UnicodeLong($value)
							 | 
						|
								    {
							 | 
						|
								        // character count
							 | 
						|
								        $ln = self::CountCharacters($value, 'UTF-8');
							 | 
						|
								
							 | 
						|
								        // option flags
							 | 
						|
								        $opt = (self::getIsIconvEnabled() || self::getIsMbstringEnabled()) ?
							 | 
						|
								            0x0001 : 0x0000;
							 | 
						|
								
							 | 
						|
								        // characters
							 | 
						|
								        $chars = self::ConvertEncoding($value, 'UTF-16LE', 'UTF-8');
							 | 
						|
								
							 | 
						|
								        $data = pack('vC', $ln, $opt) . $chars;
							 | 
						|
								        return $data;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert string from one encoding to another. First try mbstring, then iconv, finally strlen
							 | 
						|
								     *
							 | 
						|
								     * @param string $value
							 | 
						|
								     * @param string $to Encoding to convert to, e.g. 'UTF-8'
							 | 
						|
								     * @param string $from Encoding to convert from, e.g. 'UTF-16LE'
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function ConvertEncoding($value, $to, $from)
							 | 
						|
								    {
							 | 
						|
								        if (self::getIsIconvEnabled()) {
							 | 
						|
								            return iconv($from, $to, $value);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        if (self::getIsMbstringEnabled()) {
							 | 
						|
								            return mb_convert_encoding($value, $to, $from);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        if ($from == 'UTF-16LE') {
							 | 
						|
								            return self::utf16_decode($value, false);
							 | 
						|
								        } elseif ($from == 'UTF-16BE') {
							 | 
						|
								            return self::utf16_decode($value);
							 | 
						|
								        }
							 | 
						|
								        // else, no conversion
							 | 
						|
								        return $value;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Decode UTF-16 encoded strings.
							 | 
						|
								     *
							 | 
						|
								     * Can handle both BOM'ed data and un-BOM'ed data.
							 | 
						|
								     * Assumes Big-Endian byte order if no BOM is available.
							 | 
						|
								     * This function was taken from http://php.net/manual/en/function.utf8-decode.php
							 | 
						|
								     * and $bom_be parameter added.
							 | 
						|
								     *
							 | 
						|
								     * @param   string  $str  UTF-16 encoded data to decode.
							 | 
						|
								     * @return  string  UTF-8 / ISO encoded data.
							 | 
						|
								     * @access  public
							 | 
						|
								     * @version 0.2 / 2010-05-13
							 | 
						|
								     * @author  Rasmus Andersson {@link http://rasmusandersson.se/}
							 | 
						|
								     * @author vadik56
							 | 
						|
								     */
							 | 
						|
								    public static function utf16_decode($str, $bom_be = true)
							 | 
						|
								    {
							 | 
						|
								        if (strlen($str) < 2) {
							 | 
						|
								            return $str;
							 | 
						|
								        }
							 | 
						|
								        $c0 = ord($str[0]);
							 | 
						|
								        $c1 = ord($str[1]);
							 | 
						|
								        if ($c0 == 0xfe && $c1 == 0xff) {
							 | 
						|
								            $str = substr($str, 2);
							 | 
						|
								        } elseif ($c0 == 0xff && $c1 == 0xfe) {
							 | 
						|
								            $str = substr($str, 2);
							 | 
						|
								            $bom_be = false;
							 | 
						|
								        }
							 | 
						|
								        $len = strlen($str);
							 | 
						|
								        $newstr = '';
							 | 
						|
								        for ($i=0; $i<$len; $i+=2) {
							 | 
						|
								            if ($bom_be) {
							 | 
						|
								                $val = ord($str[$i])   << 4;
							 | 
						|
								                $val += ord($str[$i+1]);
							 | 
						|
								            } else {
							 | 
						|
								                $val = ord($str[$i+1]) << 4;
							 | 
						|
								                $val += ord($str[$i]);
							 | 
						|
								            }
							 | 
						|
								            $newstr .= ($val == 0x228) ? "\n" : chr($val);
							 | 
						|
								        }
							 | 
						|
								        return $newstr;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get character count. First try mbstring, then iconv, finally strlen
							 | 
						|
								     *
							 | 
						|
								     * @param string $value
							 | 
						|
								     * @param string $enc Encoding
							 | 
						|
								     * @return int Character count
							 | 
						|
								     */
							 | 
						|
								    public static function CountCharacters($value, $enc = 'UTF-8')
							 | 
						|
								    {
							 | 
						|
								        if (self::getIsMbstringEnabled()) {
							 | 
						|
								            return mb_strlen($value, $enc);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        if (self::getIsIconvEnabled()) {
							 | 
						|
								            return iconv_strlen($value, $enc);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // else strlen
							 | 
						|
								        return strlen($value);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get a substring of a UTF-8 encoded string. First try mbstring, then iconv, finally strlen
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue UTF-8 encoded string
							 | 
						|
								     * @param int $pStart Start offset
							 | 
						|
								     * @param int $pLength Maximum number of characters in substring
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function Substring($pValue = '', $pStart = 0, $pLength = 0)
							 | 
						|
								    {
							 | 
						|
								        if (self::getIsMbstringEnabled()) {
							 | 
						|
								            return mb_substr($pValue, $pStart, $pLength, 'UTF-8');
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        if (self::getIsIconvEnabled()) {
							 | 
						|
								            return iconv_substr($pValue, $pStart, $pLength, 'UTF-8');
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // else substr
							 | 
						|
								        return substr($pValue, $pStart, $pLength);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert a UTF-8 encoded string to upper case
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue UTF-8 encoded string
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function StrToUpper($pValue = '')
							 | 
						|
								    {
							 | 
						|
								        if (function_exists('mb_convert_case')) {
							 | 
						|
								            return mb_convert_case($pValue, MB_CASE_UPPER, "UTF-8");
							 | 
						|
								        }
							 | 
						|
								        return strtoupper($pValue);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert a UTF-8 encoded string to lower case
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue UTF-8 encoded string
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function StrToLower($pValue = '')
							 | 
						|
								    {
							 | 
						|
								        if (function_exists('mb_convert_case')) {
							 | 
						|
								            return mb_convert_case($pValue, MB_CASE_LOWER, "UTF-8");
							 | 
						|
								        }
							 | 
						|
								        return strtolower($pValue);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert a UTF-8 encoded string to title/proper case
							 | 
						|
								     *    (uppercase every first character in each word, lower case all other characters)
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue UTF-8 encoded string
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function StrToTitle($pValue = '')
							 | 
						|
								    {
							 | 
						|
								        if (function_exists('mb_convert_case')) {
							 | 
						|
								            return mb_convert_case($pValue, MB_CASE_TITLE, "UTF-8");
							 | 
						|
								        }
							 | 
						|
								        return ucwords($pValue);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    public static function mb_is_upper($char)
							 | 
						|
								    {
							 | 
						|
								        return mb_strtolower($char, "UTF-8") != $char;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    public static function mb_str_split($string)
							 | 
						|
								    {
							 | 
						|
								        # Split at all position not after the start: ^
							 | 
						|
								        # and not before the end: $
							 | 
						|
								        return preg_split('/(?<!^)(?!$)/u', $string);
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Reverse the case of a string, so that all uppercase characters become lowercase
							 | 
						|
								     *    and all lowercase characters become uppercase
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue UTF-8 encoded string
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function StrCaseReverse($pValue = '')
							 | 
						|
								    {
							 | 
						|
								        if (self::getIsMbstringEnabled()) {
							 | 
						|
								            $characters = self::mb_str_split($pValue);
							 | 
						|
								            foreach ($characters as &$character) {
							 | 
						|
								                if (self::mb_is_upper($character)) {
							 | 
						|
								                    $character = mb_strtolower($character, 'UTF-8');
							 | 
						|
								                } else {
							 | 
						|
								                    $character = mb_strtoupper($character, 'UTF-8');
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								            return implode('', $characters);
							 | 
						|
								        }
							 | 
						|
								        return strtolower($pValue) ^ strtoupper($pValue) ^ $pValue;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Identify whether a string contains a fractional numeric value,
							 | 
						|
								     *    and convert it to a numeric if it is
							 | 
						|
								     *
							 | 
						|
								     * @param string &$operand string value to test
							 | 
						|
								     * @return boolean
							 | 
						|
								     */
							 | 
						|
								    public static function convertToNumberIfFraction(&$operand)
							 | 
						|
								    {
							 | 
						|
								        if (preg_match('/^'.self::STRING_REGEXP_FRACTION.'$/i', $operand, $match)) {
							 | 
						|
								            $sign = ($match[1] == '-') ? '-' : '+';
							 | 
						|
								            $fractionFormula = '='.$sign.$match[2].$sign.$match[3];
							 | 
						|
								            $operand = PHPExcel_Calculation::getInstance()->_calculateFormulaValue($fractionFormula);
							 | 
						|
								            return true;
							 | 
						|
								        }
							 | 
						|
								        return false;
							 | 
						|
								    }    //    function convertToNumberIfFraction()
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get the decimal separator. If it has not yet been set explicitly, try to obtain number
							 | 
						|
								     * formatting information from locale.
							 | 
						|
								     *
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function getDecimalSeparator()
							 | 
						|
								    {
							 | 
						|
								        if (!isset(self::$decimalSeparator)) {
							 | 
						|
								            $localeconv = localeconv();
							 | 
						|
								            self::$decimalSeparator = ($localeconv['decimal_point'] != '')
							 | 
						|
								                ? $localeconv['decimal_point'] : $localeconv['mon_decimal_point'];
							 | 
						|
								
							 | 
						|
								            if (self::$decimalSeparator == '') {
							 | 
						|
								                // Default to .
							 | 
						|
								                self::$decimalSeparator = '.';
							 | 
						|
								            }
							 | 
						|
								        }
							 | 
						|
								        return self::$decimalSeparator;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Set the decimal separator. Only used by PHPExcel_Style_NumberFormat::toFormattedString()
							 | 
						|
								     * to format output by PHPExcel_Writer_HTML and PHPExcel_Writer_PDF
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue Character for decimal separator
							 | 
						|
								     */
							 | 
						|
								    public static function setDecimalSeparator($pValue = '.')
							 | 
						|
								    {
							 | 
						|
								        self::$decimalSeparator = $pValue;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Get the thousands separator. If it has not yet been set explicitly, try to obtain number
							 | 
						|
								     * formatting information from locale.
							 | 
						|
								     *
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function getThousandsSeparator()
							 | 
						|
								    {
							 | 
						|
								        if (!isset(self::$thousandsSeparator)) {
							 | 
						|
								            $localeconv = localeconv();
							 | 
						|
								            self::$thousandsSeparator = ($localeconv['thousands_sep'] != '')
							 | 
						|
								                ? $localeconv['thousands_sep'] : $localeconv['mon_thousands_sep'];
							 | 
						|
								
							 | 
						|
								            if (self::$thousandsSeparator == '') {
							 | 
						|
								                // Default to .
							 | 
						|
								                self::$thousandsSeparator = ',';
							 | 
						|
								            }
							 | 
						|
								        }
							 | 
						|
								        return self::$thousandsSeparator;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Set the thousands separator. Only used by PHPExcel_Style_NumberFormat::toFormattedString()
							 | 
						|
								     * to format output by PHPExcel_Writer_HTML and PHPExcel_Writer_PDF
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue Character for thousands separator
							 | 
						|
								     */
							 | 
						|
								    public static function setThousandsSeparator($pValue = ',')
							 | 
						|
								    {
							 | 
						|
								        self::$thousandsSeparator = $pValue;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     *    Get the currency code. If it has not yet been set explicitly, try to obtain the
							 | 
						|
								     *        symbol information from locale.
							 | 
						|
								     *
							 | 
						|
								     * @return string
							 | 
						|
								     */
							 | 
						|
								    public static function getCurrencyCode()
							 | 
						|
								    {
							 | 
						|
								        if (!isset(self::$currencyCode)) {
							 | 
						|
								            $localeconv = localeconv();
							 | 
						|
								            self::$currencyCode = ($localeconv['currency_symbol'] != '')
							 | 
						|
								                ? $localeconv['currency_symbol'] : $localeconv['int_curr_symbol'];
							 | 
						|
								
							 | 
						|
								            if (self::$currencyCode == '') {
							 | 
						|
								                // Default to $
							 | 
						|
								                self::$currencyCode = '$';
							 | 
						|
								            }
							 | 
						|
								        }
							 | 
						|
								        return self::$currencyCode;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Set the currency code. Only used by PHPExcel_Style_NumberFormat::toFormattedString()
							 | 
						|
								     *        to format output by PHPExcel_Writer_HTML and PHPExcel_Writer_PDF
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue Character for currency code
							 | 
						|
								     */
							 | 
						|
								    public static function setCurrencyCode($pValue = '$')
							 | 
						|
								    {
							 | 
						|
								        self::$currencyCode = $pValue;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Convert SYLK encoded string to UTF-8
							 | 
						|
								     *
							 | 
						|
								     * @param string $pValue
							 | 
						|
								     * @return string UTF-8 encoded string
							 | 
						|
								     */
							 | 
						|
								    public static function SYLKtoUTF8($pValue = '')
							 | 
						|
								    {
							 | 
						|
								        // If there is no escape character in the string there is nothing to do
							 | 
						|
								        if (strpos($pValue, '') === false) {
							 | 
						|
								            return $pValue;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        foreach (self::$SYLKCharacters as $k => $v) {
							 | 
						|
								            $pValue = str_replace($k, $v, $pValue);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        return $pValue;
							 | 
						|
								    }
							 | 
						|
								
							 | 
						|
								    /**
							 | 
						|
								     * Retrieve any leading numeric part of a string, or return the full string if no leading numeric
							 | 
						|
								     *    (handles basic integer or float, but not exponent or non decimal)
							 | 
						|
								     *
							 | 
						|
								     * @param    string    $value
							 | 
						|
								     * @return    mixed    string or only the leading numeric part of the string
							 | 
						|
								     */
							 | 
						|
								    public static function testStringAsNumeric($value)
							 | 
						|
								    {
							 | 
						|
								        if (is_numeric($value)) {
							 | 
						|
								            return $value;
							 | 
						|
								        }
							 | 
						|
								        $v = floatval($value);
							 | 
						|
								        return (is_numeric(substr($value, 0, strlen($v)))) ? $v : $value;
							 | 
						|
								    }
							 | 
						|
								}
							 |