parse static method

Map<String, dynamic> parse(Uint8List buffer, int offset, int length)

Implementation

static Map<String, dynamic> parse(Uint8List buffer, int offset, int length) {
  Uint8List data = buffer.sublist(offset, offset + length);
  offset = 0;

  Map<String, dynamic> obj = {};
  offset += 2;
  int numTables = TyprBin.readUshort(data, offset);
  offset += 2;

  //console.warn(version, numTables);

  final List<int> offs = [];
  obj["tables"] = [];

  for (int i = 0; i < numTables; i++) {
    int platformID = TyprBin.readUshort(data, offset);
    offset += 2;
    int encodingID = TyprBin.readUshort(data, offset);
    offset += 2;
    int noffset = TyprBin.readUint(data, offset);
    offset += 4;

    String id = "p${platformID}e${encodingID}";

    //console.warn("cmap subtable", platformID, encodingID, noffset);

    int tind = offs.indexOf(noffset);

    if (tind == -1) {
      tind = obj["tables"].length;
      Map<String, dynamic>? subt;
      offs.add(noffset);
      int format = TyprBin.readUshort(data, noffset);
      if (format == 0)
        subt = parse0(data, noffset);
      else if (format == 4)
        subt = parse4(data, noffset);
      else if (format == 6)
        subt = parse6(data, noffset);
      else if (format == 12)
        subt = parse12(data, noffset);
      else
        console.warning("unknown format: ${format} platformID: ${platformID} encodingID: ${encodingID} noffset: ${noffset}");
      obj["tables"].add(subt);
    }

    if (obj[id] != null) throw "multiple tables for one platform+encoding";
    obj[id] = tind;
  }
  return obj;
}