net.amygdalum.stringsearchalgorithms.io

Class StreamByteProvider

java.lang.Object

net.amygdalum.stringsearchalgorithms.io.StreamByteProvider

All Implemented Interfaces:

ByteProvider

public class StreamByteProvider
extends Object
implements ByteProvider

Constructor Summary

Constructors

Constructor and Description
StreamByteProvider(InputStream input, Charset charset, long start, int chunk, int lookaroundBuffers)
StreamByteProvider(InputStream input, long start, int chunk, int lookaroundBuffers)

Method Summary

Modifier and Type	Method and Description
byte	at(long pos)
byte[]	between(long start, long end) This method returns the chars between the given absolute positions.
boolean	changed()
long	current() This method returns the current positions.
long	endPoint(long splitPoint)
void	finish()
boolean	finished()
boolean	finished(int i)
void	forward(int i)
void	init(long start)
byte	lookahead()
byte	lookahead(int pos)
byte	lookbehind()
byte	lookbehind(int pos)
void	mark()
void	move(long pos) This method moves to the given absolute position.
byte	next()
byte	prev()
ByteString	slice(long start, long end) This method returns the original String between the given absolute positions.
long	startPoint(long splitPoint)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamByteProvider

public StreamByteProvider(InputStream input,
                          long start,
                          int chunk,
                          int lookaroundBuffers)

StreamByteProvider

public StreamByteProvider(InputStream input,
                          Charset charset,
                          long start,
                          int chunk,
                          int lookaroundBuffers)

Method Detail

init

public final void init(long start)

next

public byte next()

Specified by:

next in interface ByteProvider

lookahead

public byte lookahead()

Specified by:

lookahead in interface ByteProvider

lookahead

public byte lookahead(int pos)

Specified by:

lookahead in interface ByteProvider

prev

public byte prev()

Specified by:

prev in interface ByteProvider

lookbehind

public byte lookbehind()

Specified by:

lookbehind in interface ByteProvider

lookbehind

public byte lookbehind(int pos)

Specified by:

lookbehind in interface ByteProvider

current

public long current()

Description copied from interface: ByteProvider

This method returns the current positions. The result of current() must be consistent with move(int),between(int,int) and slice(int,int), e.g. move(current()) must not change the state. There are no consistency constrains to other methods, especially one should NOT assume that moving with next/prev/forward changes current in a defined way (NOT +1/-1/+n).

Specified by:

current in interface ByteProvider

Returns:

the current position

move

public void move(long pos)

Description copied from interface: ByteProvider

This method moves to the given absolute position. The argument of move(long) must be consistent with current(). That means move(current()) must not change the state.

Specified by:

move in interface ByteProvider

Parameters:

pos - the position to move

See Also:

ByteProvider.current()

forward

public void forward(int i)

Specified by:

forward in interface ByteProvider

finish

public void finish()

Specified by:

finish in interface ByteProvider

finished

public boolean finished()

Specified by:

finished in interface ByteProvider

finished

public boolean finished(int i)

Specified by:

finished in interface ByteProvider

at

public byte at(long pos)

Specified by:

at in interface ByteProvider

between

public byte[] between(long start,
                      long end)

Description copied from interface: ByteProvider

This method returns the chars between the given absolute positions. The arguments of between(long,long) must be consistent with current().

Specified by:

between in interface ByteProvider

Parameters:

start - the first position

end - the last position (exclusive)

Returns:

the chars between start and end

See Also:

ByteProvider.current()

slice

public ByteString slice(long start,
                        long end)

Description copied from interface: ByteProvider

This method returns the original String between the given absolute positions. Note that the original String might differ from the provided bytes of between(long,long).

Specified by:

slice in interface ByteProvider

Parameters:

start - the first position

end - the last position (exclusive)

Returns:

the String between start and end (in the original source)

mark

public void mark()

Specified by:

mark in interface ByteProvider

changed

public boolean changed()

Specified by:

changed in interface ByteProvider

toString

public String toString()

Overrides:

toString in class Object

endPoint

public long endPoint(long splitPoint)

startPoint

public long startPoint(long splitPoint)