/// <summary>
/// Writes PBF file header to the underlaying stream.
/// </summary>
private void WriteHeader()
{
OsmHeader header = new OsmHeader();
header.RequiredFeatures.Add("OsmSchema-V0.6");
if (this.Settings.UseDenseFormat) {
header.RequiredFeatures.Add("DenseNodes");
}
if (this.Settings.WriteMetadata) {
header.OptionalFeatures.Add("Has_Metadata");
}
using (MemoryStream stream = new MemoryStream()) {
Serializer.Serialize<OsmHeader>(stream, header);
byte[] buffer = new byte[stream.Length];
Array.Copy(stream.GetBuffer(), buffer, stream.Length);
this.WriteBlob("OSMHeader", buffer);
}
}
/// <summary>
/// Checks OsmHeader required features and if any of required features isn't supported, NotSupportedException is thrown.
/// </summary>
/// <param name="header">OsmHeader object to process.</param>
private void ProcessOsmHeader(OsmHeader header)
{
string[] supportedFeatures = new string[] { "OsmSchema-V0.6", "DenseNodes" };
foreach (var required in header.RequiredFeatures) {
if (supportedFeatures.Contains(required) == false) {
throw new NotSupportedException(string.Format("Processing specified PBF file requires '{0}' feature which isn't supported by PbfReader.", required));
}
}
}