public static void readOptionalFields(BufferStream readBuffer, MapFileInfoBuilder mapFileInfoBuilder)
{
OptionalFields optionalFields = new OptionalFields((byte)readBuffer.ReadByte());
mapFileInfoBuilder.optionalFields = optionalFields;
optionalFields.ReadOptionalFields(readBuffer);
}
/**
* Reads and validates the header block from the map file.
*
* @param readBuffer
* the ReadBuffer for the file data.
* @param fileSize
* the size of the map file in bytes.
* @return a FileOpenResult containing an error message in case of a failure.
* @throws IOException
* if an error occurs while reading the file.
*/
public void ReadHeader(BufferStream readBuffer, long fileSize)
{
RequiredFields.ReadMagicbyte(readBuffer);
RequiredFields.ReadRemainingHeader(readBuffer);
MapFileInfoBuilder mapFileInfoBuilder = new MapFileInfoBuilder();
RequiredFields.ReadFileVersion(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadFileSize(readBuffer, fileSize, mapFileInfoBuilder);
RequiredFields.ReadMapDate(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadBoundingBox(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadTilePixelSize(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadProjectionName(readBuffer, mapFileInfoBuilder);
mapFileInfoBuilder.Projection = new RepresentationConverter(Projections.GetProjection(mapFileInfoBuilder.projectionName), mapFileInfoBuilder.tilePixelSize);
OptionalFields.readOptionalFields(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadNodeTags(readBuffer, mapFileInfoBuilder);
RequiredFields.ReadWayTags(readBuffer, mapFileInfoBuilder);
ReadSubFileParameters(readBuffer, fileSize, mapFileInfoBuilder);
this.mapFileInfo = mapFileInfoBuilder.build();
}