PrinterTextParserTag constructor

PrinterTextParserTag(String tag)

Implementation

PrinterTextParserTag(String tag) {
  tag = tag.trim();

  if (!tag.startsWith('<') || !tag.endsWith('>')) {
    return;
  }

  _length = tag.length;
  int openTagIndex = tag.indexOf('<'),
      closeTagIndex = tag.indexOf('>'),
      nextSpaceIndex = tag.indexOf(' ');

  if (nextSpaceIndex != -1 && nextSpaceIndex < closeTagIndex) {
    _tagName = tag.substring(openTagIndex + 1, nextSpaceIndex).toLowerCase();

    String attributeString = tag.substring(nextSpaceIndex, closeTagIndex).trim();
    while (attributeString.contains("='")) {
      int egalPos = attributeString.indexOf("='"),
          endPos = attributeString.indexOf("'", egalPos + 2);

      String attributeName = attributeString.substring(0, egalPos);
      String attributeValue = attributeString.substring(egalPos + 2, endPos);

      if (attributeName.isNotEmpty) {
        attributes[attributeName] = attributeValue;
      }

      attributeString = attributeString.substring(endPos + 1).trim();
    }
  } else {
    _tagName = tag.substring(openTagIndex + 1, closeTagIndex).toLowerCase();
  }

  if (_tagName.startsWith('/')) {
    _tagName = _tagName.substring(1);
    _isCloseTag = true;
  }
}