示例#1
0
        /// <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 ShapefileDataReader(string filename, IGeometryFactory geometryFactory)
        {
            if (filename == null)
                throw new ArgumentNullException("filename");
            if (geometryFactory == null)
                throw new ArgumentNullException("geometryFactory");
            _geometryFactory = geometryFactory;
            _open = true;

            if (filename.ToLower().EndsWith(".shp"))
                filename = filename.ToLower().Replace(".shp",String.Empty);

             _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;
        }
示例#2
0
            /// <summary>
            ///
            /// </summary>
            protected void ReadHeader()
            {
                _header = new DbaseFileHeader();
                // read the header
                _header.ReadHeader(_dbfStream);

                // how many records remain
                _readPosition = _header.HeaderLength;
            }
示例#3
0
 /// <summary>
 /// 
 /// </summary>
 /// <param name="header"></param>
 public void UpdateHeader(DbaseFileHeader header)
 {
     headerWritten = true;
     int pos = (int)_writer.BaseStream.Position;
     _writer.Seek(0, SeekOrigin.Begin);
     header.WriteHeader(_writer);
     _writer.Seek(pos, SeekOrigin.Begin);
     _header = header;
 }
示例#4
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="header"></param>
        public void UpdateHeader(DbaseFileHeader header)
        {
            headerWritten = true;
            int pos = (int)_writer.BaseStream.Position;

            _writer.Seek(0, SeekOrigin.Begin);
            header.WriteHeader(_writer);
            _writer.Seek(pos, SeekOrigin.Begin);
            _header = header;
        }
示例#5
0
 /// <summary>
 /// 
 /// </summary>
 /// <param name="header"></param>
 public void Write(DbaseFileHeader header)
 {
     if (header == null)
         throw new ArgumentNullException("header");
     if (recordsWritten)
         throw new InvalidOperationException("Records have already been written. Header file needs to be written first.");
     headerWritten = true;
     header.WriteHeader(_writer);
     _header = header;
 }
示例#6
0
        /// <summary>
        /// Gets the header from a dbf file.
        /// </summary>
        /// <param name="dbfFile">The DBF file.</param>
        /// <returns></returns>
        public static DbaseFileHeader GetHeader(string dbfFile)
        {
            if (!File.Exists(dbfFile))
            {
                throw new FileNotFoundException(dbfFile + " not found");
            }
            DbaseFileHeader header = new DbaseFileHeader();

            header.ReadHeader(new BinaryReader(new FileStream(dbfFile, FileMode.Open, FileAccess.Read, FileShare.Read)));
            return(header);
        }
示例#7
0
 /// <summary>
 ///
 /// </summary>
 /// <param name="header"></param>
 public void Write(DbaseFileHeader header)
 {
     if (header == null)
     {
         throw new ArgumentNullException("header");
     }
     if (recordsWritten)
     {
         throw new InvalidOperationException("Records have already been written. Header file needs to be written first.");
     }
     headerWritten = true;
     header.WriteHeader(_writer);
     _header = header;
 }
示例#8
0
        /// <summary>
        /// 
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="recordCount"></param>
        public static void WriteDummyDbf(string filename, int recordCount)
        {
            DbaseFileHeader dbfHeader = new DbaseFileHeader();
            dbfHeader.AddColumn("Description",'C', 20, 0);

            DbaseFileWriter dbfWriter = new DbaseFileWriter(filename);
            dbfWriter.Write(dbfHeader);
            for (int i = 0; i < recordCount; i++)
            {
                ArrayList columnValues = new ArrayList();
                columnValues.Add((double) i);
                dbfWriter.Write(columnValues);
            }
            dbfWriter.Close();
        }
示例#9
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        /// <summary>
        /// Gets the header information for the dbase file.
        /// </summary>
        /// <returns>DbaseFileHeader contain header and field information.</returns>
        public DbaseFileHeader GetHeader()
        {
            if (_header == null)
            {
                FileStream   stream    = new FileStream(_filename, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read);
                BinaryReader dbfStream = new BinaryReader(stream);

                _header = new DbaseFileHeader();
                // read the header
                _header.ReadHeader(dbfStream);

                dbfStream.Close();
                stream.Close();
            }
            return(_header);
        }
示例#10
0
        /// <summary>
        /// Gets the header information for the dbase file.
        /// </summary>
        /// <returns>DbaseFileHeader contain header and field information.</returns>
        public DbaseFileHeader GetHeader()
        {
            if (_header==null)
            {
                FileStream stream = new FileStream(_filename, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read);
                BinaryReader dbfStream = new BinaryReader(stream);

                _header = new DbaseFileHeader();
                // read the header
                _header.ReadHeader(dbfStream);

                dbfStream.Close();
                stream.Close();

            }
            return _header;
        }
示例#11
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="recordCount"></param>
        public static void WriteDummyDbf(string filename, int recordCount)
        {
            DbaseFileHeader dbfHeader = new DbaseFileHeader();

            dbfHeader.AddColumn("Description", 'C', 20, 0);

            DbaseFileWriter dbfWriter = new DbaseFileWriter(filename);

            dbfWriter.Write(dbfHeader);
            for (int i = 0; i < recordCount; i++)
            {
                ArrayList columnValues = new ArrayList();
                columnValues.Add((double)i);
                dbfWriter.Write(columnValues);
            }
            dbfWriter.Close();
        }
示例#12
0
        /// <summary>
        /// Gets the stub header.
        /// </summary>
        /// <param name="feature">The feature.</param>
        /// <param name="count">The count.</param>
        /// <returns></returns>
        public static DbaseFileHeader GetHeader(Feature feature, int count)
        {
            IAttributesTable attribs = feature.Attributes;

            string[]        names  = attribs.GetNames();
            DbaseFileHeader header = new DbaseFileHeader();

            header.NumRecords = count;
            foreach (string name in names)
            {
                Type type = attribs.GetType(name);
                if (type == typeof(double) || type == typeof(float))
                {
                    header.AddColumn(name, 'N', DoubleLength, DoubleDecimals);
                }
                else if (type == typeof(short) || type == typeof(ushort) ||
                         type == typeof(int) || type == typeof(uint) ||
                         type == typeof(long) || type == typeof(ulong))
                {
                    header.AddColumn(name, 'N', IntLength, IntDecimals);
                }
                else if (type == typeof(string))
                {
                    header.AddColumn(name, 'C', StringLength, StringDecimals);
                }
                else if (type == typeof(bool))
                {
                    throw new NotImplementedException("Boolean values currently not supported");
                }
                else if (type == typeof(DateTime))
                {
                    throw new NotImplementedException("DateTime values currently not supported");
                }
                else
                {
                    throw new ArgumentException("Type " + type.Name + " not supported");
                }
            }
            return(header);
        }
示例#13
0
        /// <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 ShapefileDataReader(string filename, IGeometryFactory geometryFactory)
        {
            if (filename == null)
            {
                throw new ArgumentNullException("filename");
            }
            if (geometryFactory == null)
            {
                throw new ArgumentNullException("geometryFactory");
            }
            _geometryFactory = geometryFactory;
            _open            = true;

            if (filename.ToLower().EndsWith(".shp"))
            {
                filename = filename.ToLower().Replace(".shp", String.Empty);
            }

            _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;
        }
示例#14
0
 /// <summary>
 /// Gets the stub header.
 /// </summary>
 /// <param name="feature">The feature.</param>
 /// <param name="count">The count.</param>
 /// <returns></returns>
 public static DbaseFileHeader GetHeader(Feature feature, int count)
 {
     IAttributesTable attribs = feature.Attributes;
     string[] names = attribs.GetNames();
     DbaseFileHeader header = new DbaseFileHeader();
     header.NumRecords = count;
     foreach (string name in names)
     {
         Type type = attribs.GetType(name);
         if (type == typeof(double) || type == typeof(float))
             header.AddColumn(name, 'N', DoubleLength, DoubleDecimals);
         else if (type == typeof(short) || type == typeof(ushort) ||
                  type == typeof(int) || type == typeof(uint) ||
                  type == typeof(long) || type == typeof(ulong))
             header.AddColumn(name, 'N', IntLength, IntDecimals);
         else if (type == typeof(string))
             header.AddColumn(name, 'C', StringLength, StringDecimals);
         else if (type == typeof(bool))
             throw new NotImplementedException("Boolean values currently not supported");
         else if (type == typeof(DateTime))
             throw new NotImplementedException("DateTime values currently not supported");
         else throw new ArgumentException("Type " + type.Name + " not supported");
     }
     return header;
 }
示例#15
0
 /// <summary>
 /// Gets the header from a dbf file.
 /// </summary>
 /// <param name="dbfFile">The DBF file.</param>
 /// <returns></returns>
 public static DbaseFileHeader GetHeader(string dbfFile)
 {
     if (!File.Exists(dbfFile))
         throw new FileNotFoundException(dbfFile + " not found");
     DbaseFileHeader header = new DbaseFileHeader();
     header.ReadHeader(new BinaryReader(new FileStream(dbfFile, FileMode.Open, FileAccess.Read, FileShare.Read)));
     return header;
 }
示例#16
0
            /// <summary>
            /// 
            /// </summary>
            protected void ReadHeader()
            {
                _header = new DbaseFileHeader();
                // read the header
                _header.ReadHeader(_dbfStream);

                // how many records remain
                _readPosition = _header.HeaderLength;
            }