AsxDocument.parse constructor

AsxDocument.parse(String documentString)

Parses ASX document from a string.

Implementation

factory AsxDocument.parse(String documentString) {
  List<AsxEntry> values = [];

  final XmlDocument? document = XmlDocument.parse(documentString);

  List<XmlElement> entries =
      document?.findAllElements('ENTRY').toList() ?? [];

  if (entries.isEmpty) {
    entries = document?.findAllElements('entry').toList() ?? [];
  }

  if (entries.isNotEmpty) {
    for (XmlElement element in entries) {
      String? link;
      String? title;
      String? author;
      String? abstract;
      String? copyright;
      Banner? banner;
      String? baseURL;
      String? duration;
      String? previewDuration;
      String? startTime;
      String? endTime;
      List<Param> params = [];
      String? moreInfo;
      StartMarker? startMarker;
      EndMarker? endMarker;

      // Get Link.
      XmlElement? ref = element.getElement("REF");

      ref ??= element.getElement("ref");

      link = ref?.getAttributeNode("HREF")?.value;

      link ??= ref?.getAttributeNode("href")?.value;

      if (link == null) {
        throw Exception("link can not be parsed");
      }

      // Get Title.
      XmlElement? titleElement = element.getElement("TITLE");

      titleElement ??= element.getElement("title");

      title = titleElement?.descendants
          .where((node) => node is XmlText && node.text.trim().isNotEmpty)
          .join('\n');

      // Get author.
      XmlElement? authorElement = element.getElement("AUTHOR");

      authorElement ??= element.getElement("author");

      author = authorElement?.descendants
          .where((node) => node is XmlText && node.text.trim().isNotEmpty)
          .join('\n');

      // Get abstract.
      XmlElement? abstractElement = element.getElement("ABSTRACT");

      abstractElement ??= element.getElement("abstract");

      abstract = abstractElement?.descendants
          .where((node) => node is XmlText && node.text.trim().isNotEmpty)
          .join('\n');

      // Get copyright.
      XmlElement? copyrightElement = element.getElement("COPYRIGHT");

      copyrightElement ??= element.getElement("copyright");

      copyright = copyrightElement?.descendants
          .where((node) => node is XmlText && node.text.trim().isNotEmpty)
          .join('\n');

      // Get banner.
      banner = _getBanner(element);

      // Get baseURL.
      XmlElement? baseElement = element.getElement("BASE");

      baseElement ??= element.getElement("base");

      baseURL = baseElement?.getAttributeNode("HREF")?.value;

      baseURL ??= baseElement?.getAttributeNode("href")?.value;

      // Get duration.
      XmlElement? durationElement = element.getElement("DURATION");

      durationElement ??= element.getElement("duration");

      duration = durationElement?.getAttributeNode("VALUE")?.value;

      duration ??= durationElement?.getAttributeNode("value")?.value;

      // Get previewDuration.
      XmlElement? previewDurationElement =
          element.getElement("PREVIEWDURATION");

      previewDurationElement ??= element.getElement("previewduration");

      previewDuration =
          previewDurationElement?.getAttributeNode("VALUE")?.value;

      previewDuration ??=
          previewDurationElement?.getAttributeNode("value")?.value;

      // Get startTime.
      XmlElement? startTimeElement = element.getElement("STARTTIME");

      startTimeElement ??= element.getElement("starttime");

      startTime = startTimeElement?.getAttributeNode("VALUE")?.value;

      startTime ??= startTimeElement?.getAttributeNode("value")?.value;

      // Get endTime.
      XmlElement? endTimeElement = element.getElement("ENDTIME");

      endTimeElement ??= element.getElement("endtime");

      endTime = endTimeElement?.getAttributeNode("VALUE")?.value;

      endTime ??= endTimeElement?.getAttributeNode("value")?.value;

      // Get params.
      List<XmlElement> entryParams =
          element.findAllElements('PARAM').toList();

      if (entryParams.isEmpty) {
        entryParams = element.findAllElements('param').toList();
      }

      if (entryParams.isNotEmpty) {
        for (XmlElement paramElement in entryParams) {
          Param param = _getParam(paramElement);

          params.add(param);
        }
      }

      // Get moreInfo.
      XmlElement? moreInfoElement = element.getElement("MOREINFO");

      moreInfoElement ??= element.getElement("moreinfo");

      moreInfo = moreInfoElement?.getAttributeNode("HREF")?.value;

      moreInfo ??= moreInfoElement?.getAttributeNode("href")?.value;

      // Get startMarker.
      startMarker = _getStartMarker(element);

      // Get endMarker.
      endMarker = _getEndMarker(element);

      values.add(AsxEntry(
        link: link,
        title: title,
        author: author,
        abstract: abstract,
        copyright: copyright,
        banner: banner,
        baseURL: baseURL,
        duration: duration,
        previewDuration: previewDuration,
        startTime: startTime,
        endTime: endTime,
        params: params,
        moreInfo: moreInfo,
        startMarker: startMarker,
        endMarker: endMarker,
      ));
    }
  }

  return AsxDocument(
    entries: values,
  );
}