createFormat method

int createFormat(String? formatString)

Method that creates format object based on the format string and registers it in the workbook.

Implementation

int createFormat(String? formatString) {
  if (formatString == null) {
    throw Exception('formatString');
  }

  if (formatString.isEmpty) {
    throw Exception('formatString - string cannot be empty');
  }
  if (formatString.contains(_default_exponential.toLowerCase())) {
    formatString = formatString.replaceAll(
        _default_exponential.toLowerCase(), _default_exponential);
  }
//      formatString = GetCustomizedString(formatString);
  if (_hashFormatStrings.containsKey(formatString)) {
    final Format format = _hashFormatStrings[formatString]!;
    return format.index;
  }
  if (_parent.cultureInfo.culture == 'en-US') {
    final String localStr = formatString.replaceAll(r"'$'", r'\$');

    /// To know if the format string to be created is a pre-defined one.
    for (final String formatStr in _hashFormatStrings.keys) {
      if (formatStr.replaceAll(r'\\', '').replaceAll(r"'$'", r'\$') ==
          localStr) {
        final Format format = _hashFormatStrings[formatStr]!;
        return format.index;
      }
    }
  }
  final int iCount = _rawFormats.length;
  int index = _rawFormats.keys.toList()[iCount - 1];

  /// NOTE: By Microsoft, indexes less than 163 are reserved for build-in formats.
  if (index < _default_first_custom_index) {
    index = _default_first_custom_index;
  }
  index++;

  if (iCount < _max_formats_count) {
    final Format format = Format(this);
    format.formatString = formatString;
    format.index = index;
    _register(format);
  } else {
    return 0;
  }
  return index;
}