ij.io

Class RandomAccessStream

java.lang.Object

java.io.InputStream

ij.io.RandomAccessStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class RandomAccessStream
extends java.io.InputStream

This class uses a memory cache to allow seeking within an InputStream. Based on the JAI MemoryCacheSeekableStream class. Can also be constructed from a RandomAccessFile, which uses less memory since the memory cache is not required.

Constructor Summary

Constructors

Constructor and Description
RandomAccessStream(java.io.InputStream inputstream) Constructs a RandomAccessStream from an InputStream.
RandomAccessStream(java.io.RandomAccessFile ras) Constructs a RandomAccessStream from an RandomAccessFile.

Method Summary

Modifier and Type	Method and Description
void	close()
int	getFilePointer()
long	getLongFilePointer()
int	read()
int	read(byte[] bytes, int off, int len)
double	readDouble()
float	readFloat()
void	readFully(byte[] bytes)
void	readFully(byte[] bytes, int len)
int	readInt()
long	readLong()
short	readShort()
void	seek(int loc)
void	seek(long loc)

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomAccessStream

public RandomAccessStream(java.io.InputStream inputstream)

Constructs a RandomAccessStream from an InputStream. Seeking backwards is supported using a memory cache.

RandomAccessStream

public RandomAccessStream(java.io.RandomAccessFile ras)

Constructs a RandomAccessStream from an RandomAccessFile.

Method Detail

getFilePointer

public int getFilePointer()
                   throws java.io.IOException

Throws:

java.io.IOException

getLongFilePointer

public long getLongFilePointer()
                        throws java.io.IOException

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

readFully

public final void readFully(byte[] bytes)
                     throws java.io.IOException

Throws:

java.io.IOException

readFully

public final void readFully(byte[] bytes,
                            int len)
                     throws java.io.IOException

Throws:

java.io.IOException

seek

public void seek(long loc)
          throws java.io.IOException

Throws:

java.io.IOException

seek

public void seek(int loc)
          throws java.io.IOException

Throws:

java.io.IOException

readInt

public final int readInt()
                  throws java.io.IOException

Throws:

java.io.IOException

readLong

public final long readLong()
                    throws java.io.IOException

Throws:

java.io.IOException

readDouble

public final double readDouble()
                        throws java.io.IOException

Throws:

java.io.IOException

readShort

public final short readShort()
                      throws java.io.IOException

Throws:

java.io.IOException

readFloat

public final float readFloat()
                      throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException