/// <summary>
/// Initializes a new instance of the ShapefileDataReader class.
/// </summary>
/// <param name="filename">The shapefile to read (minus the .shp extension)</param>
///<param name="geometryFactory">The GeometryFactory to use.</param>
public ShapeMemoryStreamDataReader(Stream shpStream, Stream dbfStream, IGeometryFactory geometryFactory)
{
if (shpStream == null)
{
throw new ArgumentNullException("shpStream");
}
if (dbfStream == null)
{
throw new ArgumentNullException("dbfStream");
}
if (geometryFactory == null)
{
throw new ArgumentNullException("geometryFactory");
}
_open = true;
//if (filename.ToLower().EndsWith(".shp"))
// filename = filename.ToLower().Replace(".shp", String.Empty);
_shpReader = new ShapeMemoryStreamReader(shpStream, geometryFactory);
_dbfReader = new DbaseMemoryStreamReader(dbfStream);
//_dbfReader = new DbaseFileReader(filename + ".dbf");
//_shpReader = new ShapefileReader(filename + ".shp", geometryFactory);
_dbfHeader = _dbfReader.GetHeader();
_recordCount = _dbfHeader.NumRecords;
// copy dbase fields to our own array. Insert into the first position, the shape column
_dbaseFields = new DbaseFieldDescriptor[_dbfHeader.Fields.Length + 1];
_dbaseFields[0] = DbaseFieldDescriptor.ShapeField();
for (int i = 0; i < _dbfHeader.Fields.Length; i++)
{
_dbaseFields[i + 1] = _dbfHeader.Fields[i];
}
_shpHeader = _shpReader.Header;
_dbfEnumerator = _dbfReader.GetEnumerator();
_shpEnumerator = _shpReader.GetEnumerator();
_moreRecords = true;
}
/// <summary>
/// Initializes a new instance of the <see cref="ShapefileEnumerator"/> class.
/// </summary>
/// <param name="shapefile"></param>
public ShapefileEnumerator(ShapeMemoryStreamReader shapefile)
{
_parent = shapefile;
// create a file stream for each enumerator that is given out. This allows the same file
// to have one or more enumerator. If we used the parents stream - than only one IEnumerator
// could be given out.
//var stream = new FileStream(_parent._inputStream, FileMode.Open, FileAccess.Read, FileShare.Read);
_shpBinaryReader = new BigEndianBinaryReader(_parent._inputStream);
// skip header - since parent has already read this.
_shpBinaryReader.ReadBytes(100);
ShapeGeometryType type = _parent._mainHeader.ShapeType;
_handler = Shapefile.GetShapeHandler(type);
if (_handler == null)
{
throw new NotSupportedException("Unsuported shape type:" + type);
}
}