Package org.apache.commons.imaging.common.bytesource

Class ByteSourceInputStream

java.lang.Object

org.apache.commons.imaging.common.bytesource.ByteSource

org.apache.commons.imaging.common.bytesource.ByteSourceInputStream

public class ByteSourceInputStream
extends ByteSource

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	ByteSourceInputStream.CacheBlock
private class	ByteSourceInputStream.CacheReadingInputStream

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	BLOCK_SIZE
private ByteSourceInputStream.CacheBlock	cacheHead
private final InputStream	is
private byte[]	readBuffer
private long	streamLength

Constructor Summary

Constructors

Constructor	Description
ByteSourceInputStream(InputStream is, String fileName)

Method Summary

Modifier and Type	Method	Description
byte[]	getAll()
byte[]	getBlock(long blockStart, int blockLength)
String	getDescription()
private ByteSourceInputStream.CacheBlock	getFirstBlock()
InputStream	getInputStream()
long	getLength()	This operation can be VERY expensive; for inputstream byte sources, the entire stream must be drained to determine its length.
private ByteSourceInputStream.CacheBlock	readBlock()

Methods inherited from class org.apache.commons.imaging.common.bytesource.ByteSource

getBlock, getFileName, getInputStream

Methods inherited from class java.lang.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

is

private final InputStream is

cacheHead

private ByteSourceInputStream.CacheBlock cacheHead

readBuffer

private byte[] readBuffer

streamLength

private long streamLength

Constructor Details

ByteSourceInputStream

public ByteSourceInputStream(InputStream is,
 String fileName)

Method Details

readBlock

private ByteSourceInputStream.CacheBlock readBlock()
                                            throws IOException

Throws:

IOException

getFirstBlock

private ByteSourceInputStream.CacheBlock getFirstBlock()
                                                throws IOException

Throws:

IOException

getInputStream

public InputStream getInputStream()
                           throws IOException

Specified by:

getInputStream in class ByteSource

Throws:

IOException

getBlock

public byte[] getBlock(long blockStart,
 int blockLength)
                throws IOException

Specified by:

getBlock in class ByteSource

Throws:

IOException

getLength

public long getLength()
               throws IOException

Description copied from class: ByteSource

This operation can be VERY expensive; for inputstream byte sources, the entire stream must be drained to determine its length.

Specified by:

getLength in class ByteSource

Returns:

the byte source length

Throws:

IOException - if it fails to read the byte source data

getAll

public byte[] getAll()
              throws IOException

Specified by:

getAll in class ByteSource

Throws:

IOException

getDescription

public String getDescription()

Specified by:

getDescription in class ByteSource