public bool Read()
{
try
{
FileStream fs = _mapFile.StreamReader;
fs.Position = 0;
MagicByte = _mapFile.ReadFixedString(20);
if (MagicByte != "mapsforge binary OSM")
{
return(false);
}
HeaderSize = _mapFile.ReadInt32();
FileVersion = _mapFile.ReadInt32();
FileSize = _mapFile.ReadInt64();
CreationDate = new DateTime(1970, 1, 1).AddMilliseconds(_mapFile.ReadInt64());
//minLat, minLon, maxLat, maxLon
MinLat = (double)_mapFile.ReadInt32() / 1000000.0;
MinLon = (double)_mapFile.ReadInt32() / 1000000.0;
MaxLat = (double)_mapFile.ReadInt32() / 1000000.0;
MaxLon = (double)_mapFile.ReadInt32() / 1000000.0;
TileSize = _mapFile.ReadInt16();
Projection = _mapFile.ReadVariableString();
byte b = (byte)fs.ReadByte();
DebugInformationPresent = (b & 0x80) == 0x80;
MapStartPositionPresent = (b & 0x40) == 0x40;
MapStartZoomLevelPresent = (b & 0x20) == 0x20;
LanguagePreferencePresent = (b & 0x10) == 0x10;
CommentPresent = (b & 0x80) == 0x80;
CreatedByPresent = (b & 0x40) == 0x40;
//todo
if (MapStartPositionPresent)
{
MapStartLat = (double)_mapFile.ReadInt32() / 1000000.0;
MapStartLon = (double)_mapFile.ReadInt32() / 1000000.0;
}
else
{
MapStartLat = null;
MapStartLon = null;
}
if (MapStartZoomLevelPresent)
{
MapStartZoomLevel = fs.ReadByte();
}
else
{
MapStartZoomLevel = null;
}
if (LanguagePreferencePresent)
{
LanguagePreference = _mapFile.ReadVariableString();
}
else
{
LanguagePreference = null;
}
if (CommentPresent)
{
Comment = _mapFile.ReadVariableString();
}
else
{
Comment = null;
}
if (CreatedByPresent)
{
CreatedBy = _mapFile.ReadVariableString();
}
else
{
CreatedBy = null;
}
int cnt = _mapFile.ReadInt16();
POITags = new Tag[cnt];
for (int i = 0; i < cnt; i++)
{
string s = _mapFile.ReadVariableString();
string[] parts = s.Split(new char[] { '=' });
POITags[i] = new Tag(parts[0], parts[1]);
}
cnt = _mapFile.ReadInt16();
WayTags = new Tag[cnt];
for (int i = 0; i < cnt; i++)
{
string s = _mapFile.ReadVariableString();
string[] parts = s.Split(new char[] { '=' });
WayTags[i] = new Tag(parts[0], parts[1]);
}
ZoomIntervalCount = fs.ReadByte();
ZoomIntervalConfigurations = new ZoomIntervalConfiguration[ZoomIntervalCount];
for (int i = 0; i < ZoomIntervalCount; i++)
{
ZoomIntervalConfiguration zli = new ZoomIntervalConfiguration(
fs.ReadByte(),
fs.ReadByte(),
fs.ReadByte(),
_mapFile.ReadInt64(),
_mapFile.ReadInt64());
ZoomIntervalConfigurations[i] = zli;
}
}
catch
{
return(false);
}
return(true);
}