parse static method

dynamic parse(Uint8List data, int offset, int length)

Implementation

static parse(Uint8List data, int offset, int length) {
  Map<String, dynamic> obj = {};
  offset += 2;
  int count = TyprBin.readUshort(data, offset);
  offset += 2;
  offset += 2;

  //console.warn(format,count);

  List<String> names = [
    "copyright",
    "fontFamily",
    "fontSubfamily",
    "ID",
    "fullName",
    "version",
    "postScriptName",
    "trademark",
    "manufacturer",
    "designer",
    "description",
    "urlVendor",
    "urlDesigner",
    "licence",
    "licenceURL",
    "---",
    "typoFamilyName",
    "typoSubfamilyName",
    "compatibleFull",
    "sampleText",
    "postScriptCID",
    "wwsFamilyName",
    "wwsSubfamilyName",
    "lightPalette",
    "darkPalette"
  ];

  int offset0 = offset;

  for (int i = 0; i < count; i++) {
    int platformID = TyprBin.readUshort(data, offset);
    offset += 2;
    int encodingID = TyprBin.readUshort(data, offset);
    offset += 2;
    int languageID = TyprBin.readUshort(data, offset);
    offset += 2;
    int nameID = TyprBin.readUshort(data, offset);
    offset += 2;
    int slen = TyprBin.readUshort(data, offset);
    offset += 2;
    int noffset = TyprBin.readUshort(data, offset);
    offset += 2;
    //console.warn(platformID, encodingID, languageID.toString(16), nameID, length, noffset);

    String? cname;
    if (nameID < names.length) {
      cname = names[nameID];
    }

    int soff = offset0 + count * 12 + noffset;
    String? str;
    if (platformID == 0)
      str = TyprBin.readUnicode(data, soff, slen ~/ 2);
    else if (platformID == 3 && encodingID == 0)
      str = TyprBin.readUnicode(data, soff, slen ~/ 2);
    else if (encodingID == 0)
      str = TyprBin.readASCII(data, soff, slen);
    else if (encodingID == 1)
      str = TyprBin.readUnicode(data, soff, slen ~/ 2);
    else if (encodingID == 3)
      str = TyprBin.readUnicode(data, soff, slen ~/ 2);
    else if (platformID == 1) {
      str = TyprBin.readASCII(data, soff, slen);
      console.warning("reading unknown MAC encoding ${encodingID} as ASCII");
    } else {
      throw "unknown encoding ${encodingID}, platformID: ${platformID}";
    }

    String tid = "p${platformID},${languageID.toRadixString(16)}"; //Typr._platforms[platformID];
    if (obj[tid] == null) obj[tid] = {};
    obj[tid][cname != null ? cname : nameID] = str;
    obj[tid]["_lang"] = languageID;
  }

  for (final p in obj.keys) {
    if (obj[p]["postScriptName"] != null && obj[p]["_lang"] == 0x0409) {
      return obj[p];
    }
    // United States
  }
  for (final p in obj.keys)
    if (obj[p]["postScriptName"] != null && obj[p]["_lang"] == 0x0000) {
      return obj[p];
      // Universal
    }
  for (final p in obj.keys)
    if (obj[p]["postScriptName"] != null && obj[p]["_lang"] == 0x0c0c) {
      return obj[p]; // Canada
    }
  for (final p in obj.keys) {
    if (obj[p]["postScriptName"] != null) {
      return obj[p];
    }
  }

  String? tname;
  for (final p in obj.keys) {
    tname = p;
    break;
  }

  console.verbose("returning name table with languageID " + obj[tname]._lang);

  return obj[tname];
}