buildAdxString method

Implementation

String buildAdxString() {
  // Build the list of <USERDEF>.
  List<UserdefMeta> userdefs = getUserdefMetaList(data);

  // Build the XML document.
  final b = XmlBuilder();
  b.processing('xml', 'version="1.0" encoding="UTF-8"');
  b.element(
    'ADX',
    nest: () {
      // HEADER
      b.element(
        'HEADER',
        nest: () {
          b.element('ADIF_VER', nest: adifVer);
          // CREATED_TIMESTAMP
          if (createdTimestamp != null) {
            b.element(
              'CREATED_TIMESTAMP',
              nest: DateFormat('yyyyMMdd hhmmss').format(createdTimestamp!),
            );
          }

          // PROGRAMID
          if (programid != null) {
            b.element('PROGRAMID', nest: programid!);
          }
          // PROGRAMVERSION
          if (programversion != null) {
            b.element('PROGRAMVERSION', nest: programversion!);
          }

          // USERDEF
          for (var i = 0; i < userdefs.length; i++) {
            b.element(
              'USERDEF',
              attributes: {
                'FIELDID': (i + 1).toString(),
                'TYPE': userdefs[i].type,
                if (userdefs[i].enums != null)
                  'ENUMS': '{${userdefs[i].enums!.join(',')}}',
                if (userdefs[i].range != null)
                  'RANGE':
                      '{${userdefs[i].range!.$1}:${userdefs[i].range!.$2}}',
              },
              nest: userdefs[i].name,
            );
          }
        },
      );

      // RECORDS
      b.element(
        'RECORDS',
        nest: () {
          for (var qso in data) {
            b.element(
              'RECORD',
              nest: () {
                // ADIF-defined fields.
                for (var adifField in qso.adifdefs) {
                  b.element(adifField.fieldName, nest: adifField.getString());
                }

                // Application-defined fields.
                for (var appField in qso.appdefs) {
                  b.element(
                    'APP',
                    attributes: {
                      'PROGRAMID': programid ?? '',
                      'FIELDNAME': appField.fieldName,
                      'TYPE': appField.value.getType(),
                    },
                    nest: appField.value.getString(),
                  );
                }

                // User-defined fields.
                for (var userField in qso.userdefs) {
                  b.element(
                    'USERDEF',
                    attributes: {'FIELDNAME': userField.fieldName},
                    nest: userField.value.getString(),
                  );
                }
              },
            );
          }
        },
      );
    },
  );

  return b.buildDocument().toXmlString(pretty: true, indent: '  ');
}