org.icepdf.core.io
Class ConservativeSizingByteArrayOutputStream

java.lang.Object
  java.io.OutputStream
      org.icepdf.core.io.ConservativeSizingByteArrayOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class ConservativeSizingByteArrayOutputStream
extends java.io.OutputStream

Since:

2.0

Author:

Mark Collette

Field Summary

protected byte[]	buf
protected int	count
protected MemoryManager	memoryManager

Constructor Summary

ConservativeSizingByteArrayOutputStream(byte[] buffer, MemoryManager mm)
Creates a new byte array output stream, with the given initial buffer

ConservativeSizingByteArrayOutputStream(int capacity, MemoryManager mm)
Creates a new byte array output stream, with the given initial buffer capacity

Method Summary

protected byte[]	allocateByteArray(int size, boolean returnNullIfNoMemory)
byte[]	relinquishByteArray() Allows the caller to take ownership of this output stream's byte array.
void	reset()
protected void	resizeArrayToFit(int newCount)
void	setMemoryManager(MemoryManager mm)
int	size() Returns the current size of the buffer.
byte[]	toByteArray() Creates a newly allocated byte array.
boolean	trim()
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

close, flush, write

Methods inherited from class java.lang.Object

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

Field Detail

memoryManager

protected MemoryManager memoryManager

buf

protected byte[] buf

count

protected int count

Constructor Detail

ConservativeSizingByteArrayOutputStream

public ConservativeSizingByteArrayOutputStream(int capacity,
                                               MemoryManager mm)

Creates a new byte array output stream, with the given initial buffer capacity

Parameters:

capacity - The initial capacity

Throws:

java.lang.IllegalArgumentException - if capacity is negative

ConservativeSizingByteArrayOutputStream

public ConservativeSizingByteArrayOutputStream(byte[] buffer,
                                               MemoryManager mm)

Creates a new byte array output stream, with the given initial buffer

Parameters:

buffer - The initial buffer

Throws:

java.lang.IllegalArgumentException - if capacity is negative

Method Detail

setMemoryManager

public void setMemoryManager(MemoryManager mm)

write

public void write(int b)
           throws java.io.IOException

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

write

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

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

reset

public void reset()

toByteArray

public byte[] toByteArray()

Creates a newly allocated byte array. Its length is equal to the current count of bytes in this output stream. The data bytes are then copied into it.

Returns:

The current contents of this output stream, as a byte array.

size

public int size()

Returns the current size of the buffer.

Returns:

The number of valid bytes in this output stream.

relinquishByteArray

public byte[] relinquishByteArray()

Allows the caller to take ownership of this output stream's byte array. Note that this output stream will then make a new small buffer for itself and reset its size information, meaning that you should call size() before this.

trim

public boolean trim()

Returns:

true, if there was enough memory to trim buf; false otherwise

resizeArrayToFit

protected void resizeArrayToFit(int newCount)

allocateByteArray

protected byte[] allocateByteArray(int size,
                                   boolean returnNullIfNoMemory)