com.thaiopensource.validate.auto
Class RewindableReader

java.lang.Object
  java.io.Reader
      com.thaiopensource.validate.auto.RewindableReader

All Implemented Interfaces:

Rewindable, Closeable, Readable

public class RewindableReader
extends Reader
implements Rewindable

Rewindable implementation over a reader. Modified from RewindableInputStream by replacing the input stream with a reader.

Author:

george

Nested Class Summary

(package private) static class

RewindableReader.Block

Field Summary

private RewindableReader.Block	curBlock
private int	curBlockAvail If curBlockAvail > 0, then there are curBlockAvail chars available to be returned starting at curBlockPos in curBlock.buf.
private int	curBlockPos
private boolean	eof true if we have got an EOF from the underlying Reader
private RewindableReader.Block	head
private Reader	in
private RewindableReader.Block	lastBlock
private boolean	pretendClosed
private boolean	saving true unless willNotRewind has been called

Fields inherited from class java.io.Reader

lock

Constructor Summary

RewindableReader(Reader in)

Method Summary

boolean	canRewind()
void	close()
int	read()
int	read(char[] b, int off, int len)
void	rewind()
void	willNotRewind()

Methods inherited from class java.io.Reader

mark, markSupported, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

head

private RewindableReader.Block head

curBlockAvail

private int curBlockAvail

If curBlockAvail > 0, then there are curBlockAvail chars available to be returned starting at curBlockPos in curBlock.buf.

curBlock

private RewindableReader.Block curBlock

curBlockPos

private int curBlockPos

lastBlock

private RewindableReader.Block lastBlock

saving

private boolean saving

true unless willNotRewind has been called

in

private final Reader in

pretendClosed

private boolean pretendClosed

eof

private boolean eof

true if we have got an EOF from the underlying Reader

Constructor Detail

RewindableReader

public RewindableReader(Reader in)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException

rewind

public void rewind()

Specified by:

rewind in interface Rewindable

canRewind

public boolean canRewind()

Specified by:

canRewind in interface Rewindable

willNotRewind

public void willNotRewind()

Specified by:

willNotRewind in interface Rewindable

read

public int read()
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] b,
                int off,
                int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException