public EsriShapeCollection(IEnumerable <T> values)
{
if (typeof(T) is IRI.Ket.ShapefileFormat.EsriType.IEsriPointsWithMeasure)
{
throw new NotImplementedException();
}
if (values.Select(i => i.Type).Distinct().Count() > 1)
{
throw new NotImplementedException();
}
this.AddRange(values);
////////this.mainHeader = new MainFileHeader(length, values[0].Type, minimumBoundingBox);
var minimumBoundingBox = IRI.Msh.Common.Primitives.BoundingBox.GetMergedBoundingBox(values.Select(i => i.MinimumBoundingBox));
//The content length for a record is the length of the record contents section measured in
//16-bit words. Each record, therefore, contributes (4 + content length) 16-bit words
//toward the total length of the file, as stored at Byte 24 in the file header.
var length = values.Sum(i => i.ContentLength + 4);
this.mainHeader = new MainFileHeader(length, values.First().Type, minimumBoundingBox);
}
public ShxReader(string shxFileName)
{
if (!System.IO.File.Exists(shxFileName))
{
throw new NotImplementedException();
}
this.Offsets = new List <int>();
this.ContentLengthes = new List <int>();
System.IO.FileStream stream = new System.IO.FileStream(shxFileName, System.IO.FileMode.Open);
System.IO.BinaryReader reader = new System.IO.BinaryReader(stream);
this.mainHeader = new MainFileHeader(reader.ReadBytes(ShapeConstants.MainHeaderLengthInBytes));
double numberOfRecords = (mainHeader.FileLength - 50) / 4.0;
for (int i = 0; i < numberOfRecords; i++)
{
byte[] temp = reader.ReadBytes(ShapeConstants.IntegerSize); Array.Reverse(temp);
this.Offsets.Add(System.BitConverter.ToInt32(temp, 0));
temp = reader.ReadBytes(ShapeConstants.IntegerSize); Array.Reverse(temp);
this.ContentLengthes.Add(System.BitConverter.ToInt32(temp, 0));
}
reader.Close();
stream.Close();
}
public EsriShapeCollection(MainFileHeader header, List <T> values)
{
this.AddRange(values);
this.mainHeader = header;
}
public EsriShapeCollection(MainFileHeader header)
{
this.mainHeader = header;
}
protected ShpReader(string fileName, ShapeType type)
{
//this.directoryName = System.IO.Path.GetDirectoryName(fileName);
//this.fileNameWithoutExtension = System.IO.Path.GetFileNameWithoutExtension(fileName);
if (!Shapefile.CheckAllNeededFilesExists(fileName))
{
throw new NotImplementedException();
}
ShxReader shxFile = new ShxReader(Shapefile.GetShxFileName(fileName));
using (System.IO.FileStream shpStream = new System.IO.FileStream(fileName, System.IO.FileMode.Open))
{
using (this.shpReader = new System.IO.BinaryReader(shpStream))
{
this.MainHeader = new MainFileHeader(this.shpReader.ReadBytes(ShapeConstants.MainHeaderLengthInBytes));
if ((ShapeType)this.MainHeader.ShapeType != type)
{
throw new NotImplementedException();
}
if (!MainFileHeader.CanBeForTheSameShapefile(this.MainHeader, shxFile.MainHeader))
{
throw new NotImplementedException();
}
this.elements = new ShapeCollection <T>(this.MainHeader);
int numberOfRecords = shxFile.NumberOfRecords;
for (int i = 0; i < numberOfRecords; i++)
{
int offset, contentLength02;
shxFile.GetRecord(i, out offset, out contentLength02);
shpReader.BaseStream.Position = offset * 2;
int recordNumber, contentLength;
ReadRecordHeader(out recordNumber, out contentLength);
if (contentLength != contentLength02)
{
System.Diagnostics.Trace.WriteLine("ERROR at contentLength != contentLength02: i=" + i.ToString());
//throw new NotImplementedException();
}
if (contentLength == 2)
{
continue;
}
elements.Add(ReadElement());
//4: length of the record header in words
//contentLength: length of the contents in words
//this.tempPosition = this.tempPosition - (ShapeConstants.RecordHeaderLengthInWords + contentLength);
}
}
}
}
