public DbfRecord(DbfHeader header)
{
_contents = new byte[header.RecordLength];
_contents[0] = (byte)' ';
_header = header;
}
public DbfRecord(DbfHeader header)
{
_contents = new byte[header.RecordLength];
_contents[0] = (byte)' ';
_header = header;
}
private static DbfHeader BuildHeader(SqlDataReader reader, out int geomOrdinal, out int colCount)
{
DbfHeader dbfHeader = new DbfHeader();
DataTable schema = reader.GetSchemaTable();
geomOrdinal = -1;
colCount = schema.Rows.Count - 1;
foreach (DataRow row in schema.Rows)
{
int oridinal = (int)row["ColumnOrdinal"];
int size = (int)row["ColumnSize"];
string name = row["ColumnName"] as string;
switch ((row["DataType"] as Type).Name)
{
case "String":
dbfHeader.AddCharacter(name, (byte)size);
break;
case "SqlGeometry":
geomOrdinal = oridinal;
break;
default:
throw new Exception(String.Format("'{0}' is not a recognized data type", (row["DataType"] as Type).Name));
}
}
if (geomOrdinal == -1)
throw new Exception("Geometry column was not found");
return dbfHeader;
}
public static void Reproject(string destinationFolder, string projection, params ReprojectShapefile[] shapes)
{
ProjectionInfo targetProjection = ProjectionInfo.FromEsriString(projection);
foreach (ReprojectShapefile shape in shapes)
{
string shapePath = Path.Combine(destinationFolder, shape.DestinationName);
ShapefileHeader shapeHeader = ShapefileHeader.CreateEmpty(ShapefileGeometryType.Polygon);
DbfHeader dbfHeader = new DbfHeader();
dbfHeader.AddCharacter("Label", 80);
GeometryFactory gf = new GeometryFactory();
using (ShapefileDataWriter writer = ShapefileDataWriter.Create(shapePath + ".shp", dbfHeader, shapeHeader))
{
GeometryTransform transform = null;
if (File.Exists(Path.ChangeExtension(shape.Source, ".prj")))
{
transform = GeometryTransform.GetTransform(shape.Source, projection);
if (transform != null)
File.WriteAllText(shapePath + ".prj", projection);
else
File.Copy(Path.ChangeExtension(shape.Source, ".prj"), shapePath + ".prj");
}
using (ShapefileIndexReader index = new ShapefileIndexReader(Path.ChangeExtension(shape.Source, ".shx")))
{
if (transform != null)
writer.Header.Bounds.ExpandToInclude(transform.Apply(index.Header.Bounds));
else
writer.Header.Bounds.ExpandToInclude(index.Header.Bounds);
Task[] tasks = new Task[Environment.ProcessorCount];
for (int i = 0; i < tasks.Length; i++)
{
tasks[i] = Task.Factory.StartNew(() =>
{
using (ShapefileBlockReader reader = new ShapefileBlockReader(shape.Source, index, gf, transform))
{
while (reader.Read())
writer.Write(reader.Geometry, reader.Record.GetString(shape.Label));
}
});
}
Task.WaitAll(tasks);
writer.Flush();
}
}
}
}
public DbfHeader Clone()
{
DbfHeader header = new DbfHeader();
header.LastUpdate = this.LastUpdate;
foreach (DbfColumn col in _columns)
{
header.AddColumn(col.Name, col.Type, col.Length, col.DecimalCount);
}
return(header);
}
public static ShapefileDataWriter Create(string path, DbfHeader dbfHeader, ShapefileHeader shapeHeader)
{
ShapefileDataWriter writer = new ShapefileDataWriter(path, shapeHeader, FileMode.CreateNew, FileAccess.Write);
writer._writerShape.BaseStream.Seek(100L, SeekOrigin.Begin);
writer._writerIndex.BaseStream.Seek(100L, SeekOrigin.Begin);
writer._dbf = DbfFile.Create(Path.ChangeExtension(path, ".dbf"), dbfHeader);
writer._currentRecord = new DbfRecord(dbfHeader);
writer._recordNumber = 1;
writer._filePos = 50;
return writer;
}
public static void Combine(string finalShape, string projection, params CombineShapefile[] combineShapes)
{
DbfHeader dbfHeader = new DbfHeader();
dbfHeader.AddCharacter("Label", 80);
ShapefileHeader shapeHeader = ShapefileHeader.CreateEmpty(ShapefileGeometryType.Polygon);
GeometryFactory gf = new GeometryFactory();
using (ShapefileDataWriter writer = ShapefileDataWriter.Create(finalShape, dbfHeader, shapeHeader))
{
// Write the projection file.
File.WriteAllText(Path.ChangeExtension(finalShape, ".prj"), projection);
foreach (CombineShapefile workerShp in combineShapes)
{
GeometryTransform transform = GeometryTransform.GetTransform(workerShp.FilePath, projection);
using (ShapefileIndexReader index = new ShapefileIndexReader(Path.ChangeExtension(workerShp.FilePath, ".shx")))
{
if (transform != null)
writer.Header.Bounds.ExpandToInclude(transform.Apply(index.Header.Bounds));
else
writer.Header.Bounds.ExpandToInclude(index.Header.Bounds);
Task[] tasks = new Task[Environment.ProcessorCount];
for (int i = 0; i < tasks.Length; i++)
{
tasks[i] = Task.Factory.StartNew(() =>
{
using (ShapefileBlockReader reader = new ShapefileBlockReader(workerShp.FilePath, index, gf, transform))
{
while (reader.Read())
writer.Write(reader.Geometry, reader.Record.GetString(workerShp.Label));
}
});
}
Task.WaitAll(tasks);
writer.Flush();
}
}
}
}
private DbfFile(Stream stream, bool isWriting, DbfHeader header = null)
{
if (header == null)
{
Header = new DbfHeader();
}
else
{
Header = header;
}
_stream = stream;
_reader = new BinaryReader(stream);
if (isWriting)
{
_headerNeedsWrite = true;
_writer = new BinaryWriter(stream);
}
else
{
Header.Read(_reader);
}
}
public DbfHeader Clone()
{
DbfHeader header = new DbfHeader();
header.LastUpdate = this.LastUpdate;
foreach (DbfColumn col in _columns)
header.AddColumn(col.Name, col.Type, col.Length, col.DecimalCount);
return header;
}
public static DbfFile Create(string path, DbfHeader header = null)
{
return(new DbfFile(
File.Create(path), true, header));
}
public DbfRecordEnumerator(BinaryReader reader, DbfHeader header)
{
_reader = reader;
_record = new DbfRecord(header);
}
