Prado\I18N\core\NumberFormatInfo::parsePattern PHP Method

    protected function parsePattern($pattern)
    {
        $pattern = explode(';', $pattern);
        $negative = null;
        if (count($pattern) > 1) {
            $negative = $pattern[1];
        }
        $pattern = $pattern[0];
        $comma = ',';
        $dot = '.';
        $digit = '0';
        $hash = '#';
        //find the first group point, and decimal point
        $groupPos1 = strrpos($pattern, $comma);
        $decimalPos = strrpos($pattern, $dot);
        $groupPos2 = false;
        $groupSize1 = false;
        $groupSize2 = false;
        $decimalPoints = is_int($decimalPos) ? -1 : false;
        $info['negPref'] = $this->data['NumberElements'][6];
        $info['negPost'] = '';
        $info['negative'] = $negative;
        $info['positive'] = $pattern;
        //find the negative prefix and postfix
        if ($negative) {
            $prefixPostfix = $this->getPrePostfix($negative);
            $info['negPref'] = $prefixPostfix[0];
            $info['negPost'] = $prefixPostfix[1];
        }
        $posfix = $this->getPrePostfix($pattern);
        $info['posPref'] = $posfix[0];
        $info['posPost'] = $posfix[1];
        //var_dump($pattern);
        //var_dump($decimalPos);
        if (is_int($groupPos1)) {
            //get the second group
            $groupPos2 = strrpos(substr($pattern, 0, $groupPos1), $comma);
            //get the number of decimal digits
            if (is_int($decimalPos)) {
                $groupSize1 = $decimalPos - $groupPos1 - 1;
            } else {
                //no decimal point, so traverse from the back
                //to find the groupsize 1.
                for ($i = strlen($pattern) - 1; $i >= 0; $i--) {
                    if ($pattern[$i] == $digit || $pattern[$i] == $hash) {
                        $groupSize1 = $i - $groupPos1;
                        break;
                    }
                }
            }
            //get the second group size
            if (is_int($groupPos2)) {
                $groupSize2 = $groupPos1 - $groupPos2 - 1;
            }
        }
        if (is_int($decimalPos)) {
            for ($i = strlen($pattern) - 1; $i >= 0; $i--) {
                if ($pattern[$i] == $dot) {
                    break;
                }
                if ($pattern[$i] == $digit) {
                    $decimalPoints = $i - $decimalPos;
                    break;
                }
            }
        }
        if (is_int($decimalPos)) {
            $digitPattern = substr($pattern, 0, $decimalPos);
        } else {
            $digitPattern = $pattern;
        }
        $digitPattern = preg_replace('/[^0]/', '', $digitPattern);
        $info['groupPos1'] = $groupPos1;
        $info['groupSize1'] = $groupSize1;
        $info['groupPos2'] = $groupPos2;
        $info['groupSize2'] = $groupSize2;
        $info['decimalPos'] = $decimalPos;
        $info['decimalPoints'] = $decimalPoints;
        $info['digitSize'] = strlen($digitPattern);
        return $info;
    }