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org.eclipse.swt.internal.image
Class LEDataInputStream  

java.lang.Object
  java.io.InputStream
      org.eclipse.swt.internal.image.LEDataInputStream

All Implemented Interfaces:

java.io.Closeable

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final class LEDataInputStream

extends java.io.InputStream

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Field Summary
protected  byte[]	buf           The byte array containing the bytes to read.
(package private)  java.io.InputStream	in
protected  int	pos           The current position within the byte array buf.
(package private)  int	position

 

Constructor Summary

LEDataInputStream(java.io.InputStream input)

LEDataInputStream(java.io.InputStream input, int bufferSize)

 

Method Summary
int	available()           Answers how many bytes are available for reading without blocking
void	close()           This method closes the stream.
int	getPosition()           Answer how many bytes were read.
int	read()           Answer the next byte of the input stream.
int	read(byte[] b, int off, int len)           Don't imitate the JDK behaviour of reading a random number of bytes when you can actually read them all.
private  int	readData(byte[] buffer, int offset, int length)           Reads at most length bytes from this LEDataInputStream and stores them in byte array buffer starting at offset.
int	readInt()           Answer an integer comprised of the next four bytes of the input stream.
short	readShort()           Answer a short comprised of the next two bytes of the input stream.
void	unread(byte[] b)           Push back the entire content of the given buffer b.

 

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

 

Methods inherited from class java.lang.Object

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

 

Field Detail

position

int position

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in

java.io.InputStream in

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buf

protected byte[] buf

The byte array containing the bytes to read.

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pos

protected int pos

The current position within the byte array buf. A value equal to buf.length indicates no bytes available. A value of 0 indicates the buffer is full.

Constructor Detail

LEDataInputStream

public LEDataInputStream(java.io.InputStream input)

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LEDataInputStream

public LEDataInputStream(java.io.InputStream input,
                         int bufferSize)

Method Detail

close

public void close()
           throws java.io.IOException

Description copied from class: java.io.InputStream

This method closes the stream. Any futher attempts to read from the stream may generate an IOException

This method does nothing in this class, but subclasses may override this method in order to provide additional functionality.

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getPosition

public int getPosition()

Answer how many bytes were read.

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available

public int available()
              throws java.io.IOException

Answers how many bytes are available for reading without blocking

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read

public int read()
         throws java.io.IOException

Answer the next byte of the input stream.

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read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException

Don't imitate the JDK behaviour of reading a random number of bytes when you can actually read them all.

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readData

private int readData(byte[] buffer,
                     int offset,
                     int length)
              throws java.io.IOException

Reads at most length bytes from this LEDataInputStream and stores them in byte array buffer starting at offset.

Answer the number of bytes actually read or -1 if no bytes were read and end of stream was encountered. This implementation reads bytes from the pushback buffer first, then the target stream if more bytes are required to satisfy count.

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readInt

public int readInt()
            throws java.io.IOException

Answer an integer comprised of the next four bytes of the input stream.

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readShort

public short readShort()
                throws java.io.IOException

Answer a short comprised of the next two bytes of the input stream.

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unread

public void unread(byte[] b)
            throws java.io.IOException

Push back the entire content of the given buffer b.

The bytes are pushed so that they would be read back b[0], b[1], etc. If the push back buffer cannot handle the bytes copied from b, an IOException will be thrown and no byte will be pushed back.

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Home >> All >> org >> eclipse >> swt >> internal >> [ image overview ]	PREV CLASS  NEXT CLASS
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