public ShapeReader(IStreamProviderRegistry streamProviderRegistry)
{
if (streamProviderRegistry == null)
throw new ArgumentNullException("streamProviderRegistry");
m_StreamProviderRegistry = streamProviderRegistry;
m_ShapeFileHeader = new ShapefileHeader(ShapeReaderStream);
m_ShapeHandler = Shapefile.GetShapeHandler(ShapefileHeader.ShapeType);
m_ShapeOffsetCache = new Lazy<long[]>(BuildOffsetCache, LazyThreadSafetyMode.ExecutionAndPublication);
}
public ShapefileWriter(IGeometryFactory geometryFactory, IStreamProviderRegistry streamProviderRegistry, ShapeGeometryType geomType)
: this(geometryFactory)
{
_shpStream = streamProviderRegistry[StreamTypes.Shape].OpenWrite(true);
_shxStream = streamProviderRegistry[StreamTypes.Index].OpenWrite(true);
_geometryType = geomType;
_shpBinaryWriter = new BigEndianBinaryWriter(_shpStream);
_shxBinaryWriter = new BigEndianBinaryWriter(_shxStream);
WriteShpHeader(_shpBinaryWriter, 0, new Envelope(0, 0, 0, 0));
WriteShxHeader(_shxBinaryWriter, 0, new Envelope(0, 0, 0, 0));
_shapeHandler = Shapefile.GetShapeHandler(geomType);
}
public ShapefileWriter(IGeometryFactory geometryFactory, string filename, ShapeGeometryType geomType)
: this(geometryFactory)
{
var folder = Path.GetDirectoryName(filename) ?? ".";
var file = Path.GetFileNameWithoutExtension(filename);
if (string.IsNullOrEmpty(file))
throw new ArgumentException(string.Format("Filename '{0}' is not valid", filename), "filename");
filename = Path.Combine(folder, file);
_shpStream = new FileStream(filename + ".shp", FileMode.Create);
_shxStream = new FileStream(filename + ".shx", FileMode.Create);
_geometryType = geomType;
_shpBinaryWriter = new BigEndianBinaryWriter(_shpStream);
_shxBinaryWriter = new BigEndianBinaryWriter(_shxStream);
WriteShpHeader(_shpBinaryWriter, 0, new Envelope(0, 0, 0, 0), geomType);
WriteShxHeader(_shxBinaryWriter, 0, new Envelope(0, 0, 0, 0), geomType);
_shapeHandler = Shapefile.GetShapeHandler(geomType);
}
public ShapeReader(string shapeFilePath)
{
if (shapeFilePath == null)
{
throw new ArgumentNullException("shapeFilePath");
}
if (string.IsNullOrWhiteSpace(shapeFilePath))
{
throw new ArgumentException("shapeFilePath", "Path to shapefile can't be empty");
}
if (!File.Exists(shapeFilePath))
{
throw new FileNotFoundException("Given shapefile doesn't exist", shapeFilePath);
}
m_ShapeFilePath = shapeFilePath;
m_ShapeFileHeader = new ShapefileHeader(ShapeReaderStream);
m_ShapeHandler = Shapefile.GetShapeHandler(ShapefileHeader.ShapeType);
m_ShapeOffsetCache = new Lazy<long[]>(BuildOffsetCache, LazyThreadSafetyMode.ExecutionAndPublication);
}
private static /*int*/ void WriteRecordToFile(BigEndianBinaryWriter shpBinaryWriter, BigEndianBinaryWriter shxBinaryWriter, ShapeHandler handler, IGeometry body, int oid)
{
if (body == null || body.IsEmpty)
{
WriteNullShapeRecord(shpBinaryWriter, shxBinaryWriter, oid);
return;
}
// Get the length of each record (in bytes)
var recordLength = handler.ComputeRequiredLengthInWords(body);
// Get the position in the stream
var pos = shpBinaryWriter.BaseStream.Position;
shpBinaryWriter.WriteIntBE(oid);
shpBinaryWriter.WriteIntBE(recordLength);
// update shapefile index (position in words, 1 word = 2 bytes)
var posWords = pos / 2;
shxBinaryWriter.WriteIntBE((int)posWords);
shxBinaryWriter.WriteIntBE(recordLength);
handler.Write(body, shpBinaryWriter, body.Factory);
/*return recordLength;*/
}
