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<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2013 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package     PHPExcel_Style
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license     http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt   LGPL
 * @version     ##VERSION##, ##DATE##
 */


/**
 * PHPExcel_Style_NumberFormat
 *
 * @category   PHPExcel
 * @package     PHPExcel_Style
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Style_NumberFormat extends PHPExcel_Style_Supervisor implements PHPExcel_IComparable
{
        /* Pre-defined formats */
        const FORMAT_GENERAL                                    = 'General';

        const FORMAT_TEXT                                               = '@';

        const FORMAT_NUMBER                                             = '0';
        const FORMAT_NUMBER_00                                  = '0.00';
        const FORMAT_NUMBER_COMMA_SEPARATED1    = '#,##0.00';
        const FORMAT_NUMBER_COMMA_SEPARATED2    = '#,##0.00_-';

        const FORMAT_PERCENTAGE                                 = '0%';
        const FORMAT_PERCENTAGE_00                              = '0.00%';

        const FORMAT_DATE_YYYYMMDD2                             = 'yyyy-mm-dd';
        const FORMAT_DATE_YYYYMMDD                              = 'yy-mm-dd';
        const FORMAT_DATE_DDMMYYYY                              = 'dd/mm/yy';
        const FORMAT_DATE_DMYSLASH                              = 'd/m/y';
        const FORMAT_DATE_DMYMINUS                              = 'd-m-y';
        const FORMAT_DATE_DMMINUS                               = 'd-m';
        const FORMAT_DATE_MYMINUS                               = 'm-y';
        const FORMAT_DATE_XLSX14                                = 'mm-dd-yy';
        const FORMAT_DATE_XLSX15                                = 'd-mmm-yy';
        const FORMAT_DATE_XLSX16                                = 'd-mmm';
        const FORMAT_DATE_XLSX17                                = 'mmm-yy';
        const FORMAT_DATE_XLSX22                                = 'm/d/yy h:mm';
        const FORMAT_DATE_DATETIME                              = 'd/m/y h:mm';
        const FORMAT_DATE_TIME1                                 = 'h:mm AM/PM';
        const FORMAT_DATE_TIME2                                 = 'h:mm:ss AM/PM';
        const FORMAT_DATE_TIME3                                 = 'h:mm';
        const FORMAT_DATE_TIME4                                 = 'h:mm:ss';
        const FORMAT_DATE_TIME5                                 = 'mm:ss';
        const FORMAT_DATE_TIME6                                 = 'h:mm:ss';
        const FORMAT_DATE_TIME7                                 = 'i:s.S';
        const FORMAT_DATE_TIME8                                 = 'h:mm:ss;@';
        const FORMAT_DATE_YYYYMMDDSLASH                 = 'yy/mm/dd;@';

        const FORMAT_CURRENCY_USD_SIMPLE                = '"$"#,##0.00_-';
        const FORMAT_CURRENCY_USD                               = '$#,##0_-';
        const FORMAT_CURRENCY_EUR_SIMPLE                = '[$EUR ]#,##0.00_-';

        /**
         * Excel built-in number formats
         *
         * @var array
         */
        protected static $_builtInFormats;

        /**
         * Excel built-in number formats (flipped, for faster lookups)
         *
         * @var array
         */
        protected static $_flippedBuiltInFormats;

        /**
         * Format Code
         *
         * @var string
         */
        protected $_formatCode  =       PHPExcel_Style_NumberFormat::FORMAT_GENERAL;

        /**
         * Built-in format Code
         *
         * @var string
         */
        protected $_builtInFormatCode   = 0;

        /**
         * Create a new PHPExcel_Style_NumberFormat
         *
         * @param       boolean $isSupervisor   Flag indicating if this is a supervisor or not
         *                                                                      Leave this value at default unless you understand exactly what
         *                                                                              its ramifications are
         * @param       boolean $isConditional  Flag indicating if this is a conditional style or not
         *                                                                      Leave this value at default unless you understand exactly what
         *                                                                              its ramifications are
         */
        public function __construct($isSupervisor = FALSE, $isConditional = FALSE)
        {
                // Supervisor?
                parent::__construct($isSupervisor);

                if ($isConditional) {
                        $this->_formatCode = NULL;
                }
        }

        /**
         * Get the shared style component for the currently active cell in currently active sheet.
         * Only used for style supervisor
         *
         * @return PHPExcel_Style_NumberFormat
         */
        public function getSharedComponent()
        {
                return $this->_parent->getSharedComponent()->getNumberFormat();
        }

        /**
         * Build style array from subcomponents
         *
         * @param array $array
         * @return array
         */
        public function getStyleArray($array)
        {
                return array('numberformat' => $array);
        }

        /**
         * Apply styles from array
         *
         * <code>
         * $objPHPExcel->getActiveSheet()->getStyle('B2')->getNumberFormat()->applyFromArray(
         *              array(
         *                      'code' => PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_EUR_SIMPLE
         *              )
         * );
         * </code>
         *
         * @param       array   $pStyles        Array containing style information
         * @throws      PHPExcel_Exception
         * @return PHPExcel_Style_NumberFormat
         */
        public function applyFromArray($pStyles = null)
        {
                if (is_array($pStyles)) {
                        if ($this->_isSupervisor) {
                                $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($this->getStyleArray($pStyles));
                        } else {
                                if (array_key_exists('code', $pStyles)) {
                                        $this->setFormatCode($pStyles['code']);
                                }
                        }
                } else {
                        throw new PHPExcel_Exception("Invalid style array passed.");
                }
                return $this;
        }

        /**
         * Get Format Code
         *
         * @return string
         */
        public function getFormatCode()
        {
                if ($this->_isSupervisor) {
                        return $this->getSharedComponent()->getFormatCode();
                }
                if ($this->_builtInFormatCode !== false)
                {
                        return self::builtInFormatCode($this->_builtInFormatCode);
                }
                return $this->_formatCode;
        }

        /**
         * Set Format Code
         *
         * @param string $pValue
         * @return PHPExcel_Style_NumberFormat
         */
        public function setFormatCode($pValue = PHPExcel_Style_NumberFormat::FORMAT_GENERAL)
        {
                if ($pValue == '') {
                        $pValue = PHPExcel_Style_NumberFormat::FORMAT_GENERAL;
                }
                if ($this->_isSupervisor) {
                        $styleArray = $this->getStyleArray(array('code' => $pValue));
                        $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
                } else {
                        $this->_formatCode = $pValue;
                        $this->_builtInFormatCode = self::builtInFormatCodeIndex($pValue);
                }
                return $this;
        }

        /**
         * Get Built-In Format Code
         *
         * @return int
         */
        public function getBuiltInFormatCode()
        {
                if ($this->_isSupervisor) {
                        return $this->getSharedComponent()->getBuiltInFormatCode();
                }
                return $this->_builtInFormatCode;
        }

        /**
         * Set Built-In Format Code
         *
         * @param int $pValue
         * @return PHPExcel_Style_NumberFormat
         */
        public function setBuiltInFormatCode($pValue = 0)
        {

                if ($this->_isSupervisor) {
                        $styleArray = $this->getStyleArray(array('code' => self::builtInFormatCode($pValue)));
                        $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
                } else {
                        $this->_builtInFormatCode = $pValue;
                        $this->_formatCode = self::builtInFormatCode($pValue);
                }
                return $this;
        }

        /**
         * Fill built-in format codes
         */
        private static function fillBuiltInFormatCodes()
        {
                // Built-in format codes
                if (is_null(self::$_builtInFormats)) {
                        self::$_builtInFormats = array();

                        // General
                        self::$_builtInFormats[0] = PHPExcel_Style_NumberFormat::FORMAT_GENERAL;
                        self::$_builtInFormats[1] = '0';
                        self::$_builtInFormats[2] = '0.00';
                        self::$_builtInFormats[3] = '#,##0';
                        self::$_builtInFormats[4] = '#,##0.00';

                        self::$_builtInFormats[9] = '0%';
                        self::$_builtInFormats[10] = '0.00%';
                        self::$_builtInFormats[11] = '0.00E+00';
                        self::$_builtInFormats[12] = '# ?/?';
                        self::$_builtInFormats[13] = '# ??/??';
                        self::$_builtInFormats[14] = 'mm-dd-yy';
                        self::$_builtInFormats[15] = 'd-mmm-yy';
                        self::$_builtInFormats[16] = 'd-mmm';
                        self::$_builtInFormats[17] = 'mmm-yy';
                        self::$_builtInFormats[18] = 'h:mm AM/PM';
                        self::$_builtInFormats[19] = 'h:mm:ss AM/PM';
                        self::$_builtInFormats[20] = 'h:mm';
                        self::$_builtInFormats[21] = 'h:mm:ss';
                        self::$_builtInFormats[22] = 'm/d/yy h:mm';

                        self::$_builtInFormats[37] = '#,##0 ;(#,##0)';
                        self::$_builtInFormats[38] = '#,##0 ;[Red](#,##0)';
                        self::$_builtInFormats[39] = '#,##0.00;(#,##0.00)';
                        self::$_builtInFormats[40] = '#,##0.00;[Red](#,##0.00)';

                        self::$_builtInFormats[44] = '_("$"* #,##0.00_);_("$"* \(#,##0.00\);_("$"* "-"??_);_(@_)';
                        self::$_builtInFormats[45] = 'mm:ss';
                        self::$_builtInFormats[46] = '[h]:mm:ss';
                        self::$_builtInFormats[47] = 'mmss.0';
                        self::$_builtInFormats[48] = '##0.0E+0';
                        self::$_builtInFormats[49] = '@';

                        // CHT
                        self::$_builtInFormats[27] = '[$-404]e/m/d';
                        self::$_builtInFormats[30] = 'm/d/yy';
                        self::$_builtInFormats[36] = '[$-404]e/m/d';
                        self::$_builtInFormats[50] = '[$-404]e/m/d';
                        self::$_builtInFormats[57] = '[$-404]e/m/d';

                        // THA
                        self::$_builtInFormats[59] = 't0';
                        self::$_builtInFormats[60] = 't0.00';
                        self::$_builtInFormats[61] = 't#,##0';
                        self::$_builtInFormats[62] = 't#,##0.00';
                        self::$_builtInFormats[67] = 't0%';
                        self::$_builtInFormats[68] = 't0.00%';
                        self::$_builtInFormats[69] = 't# ?/?';
                        self::$_builtInFormats[70] = 't# ??/??';

                        // Flip array (for faster lookups)
                        self::$_flippedBuiltInFormats = array_flip(self::$_builtInFormats);
                }
        }

        /**
         * Get built-in format code
         *
         * @param       int             $pIndex
         * @return      string
         */
        public static function builtInFormatCode($pIndex)
        {
                // Clean parameter
                $pIndex = intval($pIndex);

                // Ensure built-in format codes are available
                self::fillBuiltInFormatCodes();

                // Lookup format code
                if (isset(self::$_builtInFormats[$pIndex])) {
                        return self::$_builtInFormats[$pIndex];
                }

                return '';
        }

        /**
         * Get built-in format code index
         *
         * @param       string          $formatCode
         * @return      int|boolean
         */
        public static function builtInFormatCodeIndex($formatCode)
        {
                // Ensure built-in format codes are available
                self::fillBuiltInFormatCodes();

                // Lookup format code
                if (isset(self::$_flippedBuiltInFormats[$formatCode])) {
                        return self::$_flippedBuiltInFormats[$formatCode];
                }

                return false;
        }

        /**
         * Get hash code
         *
         * @return string       Hash code
         */
        public function getHashCode()
        {
                if ($this->_isSupervisor) {
                        return $this->getSharedComponent()->getHashCode();
                }
                return md5(
                          $this->_formatCode
                        . $this->_builtInFormatCode
                        . __CLASS__
                );
        }

        /**
         * Search/replace values to convert Excel date/time format masks to PHP format masks
         *
         * @var array
         */
        private static $_dateFormatReplacements = array(
                        // first remove escapes related to non-format characters
                        '\\'    => '',
                        //      12-hour suffix
                        'am/pm' => 'A',
                        //      4-digit year
                        'e'     => 'Y',
                        'yyyy'  => 'Y',
                        //      2-digit year
                        'yy'    => 'y',
                        //      first letter of month - no php equivalent
                        'mmmmm' => 'M',
                        //      full month name
                        'mmmm'  => 'F',
                        //      short month name
                        'mmm'   => 'M',
                        //      mm is minutes if time, but can also be month w/leading zero
                        //      so we try to identify times be the inclusion of a : separator in the mask
                        //      It isn't perfect, but the best way I know how
                        ':mm'   => ':i',
                        'mm:'   => 'i:',
                        //      month leading zero
                        'mm'    => 'm',
                        //      month no leading zero
                        'm'             => 'n',
                        //      full day of week name
                        'dddd'  => 'l',
                        //      short day of week name
                        'ddd'   => 'D',
                        //      days leading zero
                        'dd'    => 'd',
                        //      days no leading zero
                        'd'             => 'j',
                        //      seconds
                        'ss'    => 's',
                        //      fractional seconds - no php equivalent
                        '.s'    => ''
                );
        /**
         * Search/replace values to convert Excel date/time format masks hours to PHP format masks (24 hr clock)
         *
         * @var array
         */
        private static $_dateFormatReplacements24 = array(
                        'hh'    => 'H',
                        'h'             => 'G'
                );
        /**
         * Search/replace values to convert Excel date/time format masks hours to PHP format masks (12 hr clock)
         *
         * @var array
         */
        private static $_dateFormatReplacements12 = array(
                        'hh'    => 'h',
                        'h'             => 'g'
                );

        private static function _formatAsDate(&$value, &$format)
        {
                // dvc: convert Excel formats to PHP date formats

                // strip off first part containing e.g. [$-F800] or [$USD-409]
                // general syntax: [$<Currency string>-<language info>]
                // language info is in hexadecimal
                $format = preg_replace('/^(\[\$[A-Z]*-[0-9A-F]*\])/i', '', $format);

                // OpenOffice.org uses upper-case number formats, e.g. 'YYYY', convert to lower-case
                $format = strtolower($format);

                $format = strtr($format,self::$_dateFormatReplacements);
                if (!strpos($format,'A')) {     // 24-hour time format
                        $format = strtr($format,self::$_dateFormatReplacements24);
                } else {                                        // 12-hour time format
                        $format = strtr($format,self::$_dateFormatReplacements12);
                }

                $dateObj = PHPExcel_Shared_Date::ExcelToPHPObject($value);
                $value = $dateObj->format($format);
        }

        private static function _formatAsPercentage(&$value, &$format)
        {
                if ($format === self::FORMAT_PERCENTAGE) {
                        $value = round( (100 * $value), 0) . '%';
                } else {
                        if (preg_match('/\.[#0]+/i', $format, $m)) {
                                $s = substr($m[0], 0, 1) . (strlen($m[0]) - 1);
                                $format = str_replace($m[0], $s, $format);
                        }
                        if (preg_match('/^[#0]+/', $format, $m)) {
                                $format = str_replace($m[0], strlen($m[0]), $format);
                        }
                        $format = '%' . str_replace('%', 'f%%', $format);

                        $value = sprintf($format, 100 * $value);
                }
        }

        private static function _formatAsFraction(&$value, &$format)
        {
                $sign = ($value < 0) ? '-' : '';

                $integerPart = floor(abs($value));
                $decimalPart = trim(fmod(abs($value),1),'0.');
                $decimalLength = strlen($decimalPart);
                $decimalDivisor = pow(10,$decimalLength);

                $GCD = PHPExcel_Calculation_MathTrig::GCD($decimalPart,$decimalDivisor);

                $adjustedDecimalPart = $decimalPart/$GCD;
                $adjustedDecimalDivisor = $decimalDivisor/$GCD;

                if ((strpos($format,'0') !== false) || (strpos($format,'#') !== false) || (substr($format,0,3) == '? ?')) {
                        if ($integerPart == 0) {
                                $integerPart = '';
                        }
                        $value = "$sign$integerPart $adjustedDecimalPart/$adjustedDecimalDivisor";
                } else {
                        $adjustedDecimalPart += $integerPart * $adjustedDecimalDivisor;
                        $value = "$sign$adjustedDecimalPart/$adjustedDecimalDivisor";
                }
        }

        private static function _complexNumberFormatMask($number, $mask) {
                if (strpos($mask,'.') !== false) {
                        $numbers = explode('.', $number . '.0');
                        $masks = explode('.', $mask . '.0');
                        $result1 = self::_complexNumberFormatMask($numbers[0], $masks[0]);
                        $result2 = strrev(self::_complexNumberFormatMask(strrev($numbers[1]), strrev($masks[1])));
                        return $result1 . '.' . $result2;
                }

                $r = preg_match_all('/0+/', $mask, $result, PREG_OFFSET_CAPTURE);
                if ($r > 1) {
                        $result = array_reverse($result[0]);

                        foreach($result as $block) {
                                $divisor = 1 . $block[0];
                                $size = strlen($block[0]);
                                $offset = $block[1];

                                $blockValue = sprintf(
                                        '%0' . $size . 'd',
                                        fmod($number, $divisor)
                                );
                                $number = floor($number / $divisor);
                                $mask = substr_replace($mask,$blockValue, $offset, $size);
                        }
                        if ($number > 0) {
                                $mask = substr_replace($mask, $number, $offset, 0);
                        }
                        $result = $mask;
                } else {
                        $result = $number;
                }

                return $result;
        }

        /**
         * Convert a value in a pre-defined format to a PHP string
         *
         * @param mixed $value          Value to format
         * @param string        $format         Format code
         * @param array         $callBack       Callback function for additional formatting of string
         * @return string       Formatted string
         */
        public static function toFormattedString($value = '0', $format = PHPExcel_Style_NumberFormat::FORMAT_GENERAL, $callBack = null)
        {
                // For now we do not treat strings although section 4 of a format code affects strings
                if (!is_numeric($value)) return $value;

                // For 'General' format code, we just pass the value although this is not entirely the way Excel does it,
                // it seems to round numbers to a total of 10 digits.
                if (($format === PHPExcel_Style_NumberFormat::FORMAT_GENERAL) || ($format === PHPExcel_Style_NumberFormat::FORMAT_TEXT)) {
                        return $value;
                }

                // Get the sections, there can be up to four sections
                $sections = explode(';', $format);

                // Fetch the relevant section depending on whether number is positive, negative, or zero?
                // Text not supported yet.
                // Here is how the sections apply to various values in Excel:
                //   1 section:   [POSITIVE/NEGATIVE/ZERO/TEXT]
                //   2 sections:  [POSITIVE/ZERO/TEXT] [NEGATIVE]
                //   3 sections:  [POSITIVE/TEXT] [NEGATIVE] [ZERO]
                //   4 sections:  [POSITIVE] [NEGATIVE] [ZERO] [TEXT]
                switch (count($sections)) {
                        case 1:
                                $format = $sections[0];
                                break;

                        case 2:
                                $format = ($value >= 0) ? $sections[0] : $sections[1];
                                $value = abs($value); // Use the absolute value
                                break;

                        case 3:
                                $format = ($value > 0) ?
                                        $sections[0] : ( ($value < 0) ?
                                                $sections[1] : $sections[2]);
                                $value = abs($value); // Use the absolute value
                                break;

                        case 4:
                                $format = ($value > 0) ?
                                        $sections[0] : ( ($value < 0) ?
                                                $sections[1] : $sections[2]);
                                $value = abs($value); // Use the absolute value
                                break;

                        default:
                                // something is wrong, just use first section
                                $format = $sections[0];
                                break;
                }

                // Save format with color information for later use below
                $formatColor = $format;

                // Strip color information
                $color_regex = '/^\\[[a-zA-Z]+\\]/';
                $format = preg_replace($color_regex, '', $format);

                // Let's begin inspecting the format and converting the value to a formatted string
                if (preg_match('/^(\[\$[A-Z]*-[0-9A-F]*\])*[hmsdy]/i', $format)) { // datetime format
                        self::_formatAsDate($value, $format);
                } else if (preg_match('/%$/', $format)) { // % number format
                        self::_formatAsPercentage($value, $format);
                } else {
                        if ($format === self::FORMAT_CURRENCY_EUR_SIMPLE) {
                                $value = 'EUR ' . sprintf('%1.2f', $value);
                        } else {
                                // In Excel formats, "_" is used to add spacing, which we can't do in HTML
                                $format = preg_replace('/_./', '', $format);

                                // Some non-number characters are escaped with \, which we don't need
                                $format = preg_replace("/\\\\/", '', $format);

                                // Some non-number strings are quoted, so we'll get rid of the quotes, likewise any positional * symbols
                                $format = str_replace(array('"','*'), '', $format);

                                // Find out if we need thousands separator
                                // This is indicated by a comma enclosed by a digit placeholder:
                                //              #,#   or   0,0
                                $useThousands = preg_match('/(#,#|0,0)/', $format);
                                if ($useThousands) {
                                        $format = preg_replace('/0,0/', '00', $format);
                                        $format = preg_replace('/#,#/', '##', $format);
                                }

                                // Scale thousands, millions,...
                                // This is indicated by a number of commas after a digit placeholder:
                                //              #,   or 0.0,,
                                $scale = 1; // same as no scale
                                $matches = array();
                                if (preg_match('/(#|0)(,+)/', $format, $matches)) {
                                        $scale = pow(1000, strlen($matches[2]));

                                        // strip the commas
                                        $format = preg_replace('/0,+/', '0', $format);
                                        $format = preg_replace('/#,+/', '#', $format);
                                }

                                if (preg_match('/#?.*\?\/\?/', $format, $m)) {
                                        //echo 'Format mask is fractional '.$format.' <br />';
                                        if ($value != (int)$value) {
                                                self::_formatAsFraction($value, $format);
                                        }

                                } else {
                                        // Handle the number itself

                                        // scale number
                                        $value = $value / $scale;

                                        // Strip #
                                        $format = preg_replace('/\\#/', '0', $format);

                                        $n = "/\[[^\]]+\]/";
                                        $m = preg_replace($n, '', $format);
                                        $number_regex = "/(0+)(\.?)(0*)/";
                                        if (preg_match($number_regex, $m, $matches)) {
                                                $left = $matches[1];
                                                $dec = $matches[2];
                                                $right = $matches[3];

                                                // minimun width of formatted number (including dot)
                                                $minWidth = strlen($left) + strlen($dec) + strlen($right);
                                                if ($useThousands) {
                                                        $value = number_format(
                                                                                $value
                                                                                , strlen($right)
                                                                                , PHPExcel_Shared_String::getDecimalSeparator()
                                                                                , PHPExcel_Shared_String::getThousandsSeparator()
                                                                        );
                                                        $value = preg_replace($number_regex, $value, $format);
                                                } else {
                                                        if (preg_match('/0([^\d\.]+)0/', $format, $matches)) {
                                                                $value = self::_complexNumberFormatMask($value, $format);
                                                        } else {
                                                                $sprintf_pattern = "%0$minWidth." . strlen($right) . "f";
                                                                $value = sprintf($sprintf_pattern, $value);
                                                                $value = preg_replace($number_regex, $value, $format);
                                                        }
                                                }
                                        }
                                }
                                if (preg_match('/\[\$(.*)\]/u', $format, $m)) {
                                        //      Currency or Accounting
                                        $currencyFormat = $m[0];
                                        $currencyCode = $m[1];
                                        list($currencyCode) = explode('-',$currencyCode);
                                        if ($currencyCode == '') {
                                                $currencyCode = PHPExcel_Shared_String::getCurrencyCode();
                                        }
                                        $value = preg_replace('/\[\$([^\]]*)\]/u',$currencyCode,$value);
                                }
                        }
                }

                // Additional formatting provided by callback function
                if ($callBack !== null) {
                        list($writerInstance, $function) = $callBack;
                        $value = $writerInstance->$function($value, $formatColor);
                }

                return $value;
        }

}