Package com.google.common.io

Class LittleEndianDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.google.common.io.LittleEndianDataInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable

@Beta
public final class LittleEndianDataInputStream
extends FilterInputStream
implements DataInput

An implementation of DataInput that uses little-endian byte ordering for reading short, int, float, double, and long values.

Note: This class intentionally violates the specification of its supertype DataInput, which explicitly requires big-endian byte order.

Since:

8.0

Constructor Summary

Constructors

Constructor	Description
LittleEndianDataInputStream(InputStream in)	Creates a LittleEndianDataInputStream that wraps the given stream.

Method Summary

Modifier and Type	Method	Description
boolean	readBoolean()
byte	readByte()
char	readChar()	Reads a char as specified by DataInputStream.readChar(), except using little-endian byte order.
double	readDouble()	Reads a double as specified by DataInputStream.readDouble(), except using little-endian byte order.
float	readFloat()	Reads a float as specified by DataInputStream.readFloat(), except using little-endian byte order.
void	readFully(byte[] b)
void	readFully(byte[] b, int off, int len)
int	readInt()	Reads an integer as specified by DataInputStream.readInt(), except using little-endian byte order.
String	readLine()	This method will throw an UnsupportedOperationException.
long	readLong()	Reads a long as specified by DataInputStream.readLong(), except using little-endian byte order.
short	readShort()	Reads a short as specified by DataInputStream.readShort(), except using little-endian byte order.
int	readUnsignedByte()
int	readUnsignedShort()	Reads an unsigned short as specified by DataInputStream.readUnsignedShort(), except using little-endian byte order.
String	readUTF()
int	skipBytes(int n)

Methods inherited from class java.io.FilterInputStream

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

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

LittleEndianDataInputStream

public LittleEndianDataInputStream(InputStream in)

Creates a LittleEndianDataInputStream that wraps the given stream.

Parameters:

in - the stream to delegate to

Method Detail

readLine

public String readLine()

This method will throw an UnsupportedOperationException.

Specified by:

readLine in interface DataInput

readFully

public void readFully(byte[] b)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

readFully

public void readFully(byte[] b,
                      int off,
                      int len)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Specified by:

skipBytes in interface DataInput

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Reads an unsigned short as specified by DataInputStream.readUnsignedShort(), except using little-endian byte order.

Specified by:

readUnsignedShort in interface DataInput

Returns:

the next two bytes of the input stream, interpreted as an unsigned 16-bit integer in little-endian byte order

Throws:

IOException - if an I/O error occurs

readInt

public int readInt()
            throws IOException

Reads an integer as specified by DataInputStream.readInt(), except using little-endian byte order.

Specified by:

readInt in interface DataInput

Returns:

the next four bytes of the input stream, interpreted as an int in little-endian byte order

Throws:

IOException - if an I/O error occurs

readLong

public long readLong()
              throws IOException

Reads a long as specified by DataInputStream.readLong(), except using little-endian byte order.

Specified by:

readLong in interface DataInput

Returns:

the next eight bytes of the input stream, interpreted as a long in little-endian byte order

Throws:

IOException - if an I/O error occurs

readFloat

public float readFloat()
                throws IOException

Reads a float as specified by DataInputStream.readFloat(), except using little-endian byte order.

Specified by:

readFloat in interface DataInput

Returns:

the next four bytes of the input stream, interpreted as a float in little-endian byte order

Throws:

IOException - if an I/O error occurs

readDouble

public double readDouble()
                  throws IOException

Reads a double as specified by DataInputStream.readDouble(), except using little-endian byte order.

Specified by:

readDouble in interface DataInput

Returns:

the next eight bytes of the input stream, interpreted as a double in little-endian byte order

Throws:

IOException - if an I/O error occurs

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface DataInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Reads a short as specified by DataInputStream.readShort(), except using little-endian byte order.

Specified by:

readShort in interface DataInput

Returns:

the next two bytes of the input stream, interpreted as a short in little-endian byte order.

Throws:

IOException - if an I/O error occurs.

readChar

public char readChar()
              throws IOException

Reads a char as specified by DataInputStream.readChar(), except using little-endian byte order.

Specified by:

readChar in interface DataInput

Returns:

the next two bytes of the input stream, interpreted as a char in little-endian byte order

Throws:

IOException - if an I/O error occurs

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Throws:

IOException