Class RandomAccessInputStream

java.lang.Object

java.io.InputStream

com.github.junrar.io.RandomAccessInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class RandomAccessInputStream
extends InputStream

This is a class that uses a memory cache to allow seeking within an InputStream. Based on the JAI MemoryCacheSeekableStream class.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	BLOCK_MASK
private static final int	BLOCK_SHIFT
private static final int	BLOCK_SIZE
private final Vector	data
private boolean	foundEOS
private long	length
private long	pointer
private final InputStream	src

Constructor Summary

Constructors

Constructor	Description
RandomAccessInputStream(InputStream inputstream)	Constructs a RandomAccessStream from an InputStream.

Method Summary

Modifier and Type	Method	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()
private long	readUntil(long l)
void	seek(int loc)
void	seek(long loc)

Methods inherited from class InputStream

available, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class Object

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

Field Details

BLOCK_SIZE

private static final int BLOCK_SIZE

See Also:

• Constant Field Values

BLOCK_MASK

private static final int BLOCK_MASK

See Also:

• Constant Field Values

BLOCK_SHIFT

private static final int BLOCK_SHIFT

See Also:

• Constant Field Values

src

private final InputStream src

pointer

private long pointer

data

private final Vector data

length

private long length

foundEOS

private boolean foundEOS

Constructor Details

RandomAccessInputStream

public RandomAccessInputStream(InputStream inputstream)

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

Parameters:

inputstream - .

Method Details

getFilePointer

public int getFilePointer()
                   throws IOException

Throws:

IOException

getLongFilePointer

public long getLongFilePointer()
                        throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException

readFully

public void readFully(byte[] bytes)
               throws IOException

Throws:

IOException

readFully

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

Throws:

IOException

readUntil

private long readUntil(long l)
                throws IOException

Throws:

IOException

seek

public void seek(long loc)
          throws IOException

Throws:

IOException

seek

public void seek(int loc)
          throws IOException

Throws:

IOException

readInt

public int readInt()
            throws IOException

Throws:

IOException

readLong

public long readLong()
              throws IOException

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Throws:

IOException

readShort

public short readShort()
                throws IOException

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException