ucar.nc2.ui.gis.shapefile

Class BeLeDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

ucar.nc2.ui.gis.shapefile.BeLeDataInputStream

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.lang.AutoCloseable

public class BeLeDataInputStream
extends java.io.DataInputStream

Big-endian little-endian data input stream, from which numbers in both big- and little-endian representations can be read. This is needed for ESRI shapefiles, for example, since they contain both big- and little-endian representations.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
BeLeDataInputStream(java.io.InputStream inputStream) Construct a bigEndian-littleEndian input stream from an input stream.
BeLeDataInputStream(java.lang.String filename) Construct a bigEndian-littleEndian input stream from a file.
BeLeDataInputStream(java.net.URL url) Construct a bigEndian-littleEndian input stream from a URL.

Method Summary

Modifier and Type	Method and Description
double	readLEDouble() read a double in little endian format
void	readLEDoubles(double[] d, int n) Reads n little-endian doubles from a random access file.
int	readLEInt() read an int in little endian format
long	readLELong() read a long in little endian format
void	readLELongs(long[] lbuf, int n) Reads n little-endian longs from a random access file.

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BeLeDataInputStream

public BeLeDataInputStream(java.io.InputStream inputStream)
                    throws java.io.IOException

Construct a bigEndian-littleEndian input stream from an input stream.

Parameters:

inputStream - from which to read

Throws:

java.io.IOException

BeLeDataInputStream

public BeLeDataInputStream(java.lang.String filename)
                    throws java.io.IOException

Construct a bigEndian-littleEndian input stream from a file.

Parameters:

filename - of file

Throws:

java.io.IOException

BeLeDataInputStream

public BeLeDataInputStream(java.net.URL url)
                    throws java.io.IOException

Construct a bigEndian-littleEndian input stream from a URL.

Parameters:

url - of remote data

Throws:

java.io.IOException - if there was a problem reading the file.

Method Detail

readLEInt

public int readLEInt()
              throws java.io.IOException

read an int in little endian format

Returns:

int created from next 4 bytes in stream, in littleEndian order

Throws:

java.io.IOException

readLEDouble

public double readLEDouble()
                    throws java.io.IOException

read a double in little endian format

Returns:

double from next 8 bytes in stream, littleEndian order

Throws:

java.io.IOException

readLEDoubles

public final void readLEDoubles(double[] d,
                                int n)
                         throws java.io.IOException

Reads n little-endian doubles from a random access file.

This method is provided for speed when accessing a number of consecutive values of the same type.

Parameters:

d - the buffer into which the doubles are read

n - number of little-endian doubles to read

Throws:

java.io.IOException

readLELong

public long readLELong()
                throws java.io.IOException

read a long in little endian format

Returns:

long from next 8 bytes in stream, littleEndian order

Throws:

java.io.IOException

readLELongs

public final void readLELongs(long[] lbuf,
                              int n)
                       throws java.io.IOException

Reads n little-endian longs from a random access file.

This method is provided for speed when accessing a number of consecutive values of the same type.

Parameters:

lbuf - the buffer into which the longs are read

n - the number of little-endian longs to read

Throws:

java.io.IOException