/// <summary>
/// Reads GeoJson and returns the feature.
/// </summary>
/// <param name="jsonReader"></param>
/// <returns></returns>
public static Feature ReadFeature(JsonReader jsonReader)
{
var type = string.Empty;
Geometry geometry = null;
GeometryAttributeCollection attributes = null;
while (jsonReader.Read())
{
if (jsonReader.TokenType == JsonToken.EndArray)
{
return(null);
}
if (jsonReader.TokenType == JsonToken.EndObject)
{ // end of geometry.
break;
}
if (jsonReader.TokenType == JsonToken.PropertyName)
{
if ((string)jsonReader.Value == "type")
{ // the geometry type.
type = jsonReader.ReadAsString();
}
else if ((string)jsonReader.Value == "geometry")
{ // the geometry.
geometry = GeoJsonConverter.ReadGeometry(jsonReader);
}
else if ((string)jsonReader.Value == "properties")
{ // the properties/attributes.
attributes = GeoJsonConverter.ReadAttributes(jsonReader);
}
}
}
switch (type)
{
case "Feature":
if (geometry == null)
{
throw new Exception("No geometry found.");
}
if (attributes != null)
{
return(new Feature(geometry, attributes));
}
return(new Feature(geometry));
}
throw new Exception("Invalid type.");
}
public static Feature ReadFeature(JsonReader jsonReader)
{
string str = string.Empty;
Geometry geometry = (Geometry)null;
GeometryAttributeCollection attributes = (GeometryAttributeCollection)null;
while (jsonReader.Read())
{
if (jsonReader.TokenType == JsonToken.EndArray)
{
return((Feature)null);
}
if (jsonReader.TokenType != JsonToken.EndObject)
{
if (jsonReader.TokenType == JsonToken.PropertyName)
{
if ((string)jsonReader.Value == "type")
{
str = jsonReader.ReadAsString();
}
else if ((string)jsonReader.Value == "geometry")
{
geometry = GeoJsonConverter.ReadGeometry(jsonReader);
}
else if ((string)jsonReader.Value == "properties")
{
attributes = GeoJsonConverter.ReadAttributes(jsonReader);
}
}
}
else
{
break;
}
}
if (!(str == "Feature"))
{
throw new Exception("Invalid type.");
}
if (geometry == null)
{
throw new Exception("No geometry found.");
}
if (attributes != null)
{
return(new Feature(geometry, attributes));
}
return(new Feature(geometry));
}
