Package org.apache.james.mime4j.io

Class BufferedLineReaderInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

org.apache.james.mime4j.io.LineReaderInputStream

org.apache.james.mime4j.io.BufferedLineReaderInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class BufferedLineReaderInputStream
extends LineReaderInputStream

Input buffer that can be used to search for patterns using Quick Search algorithm in data read from an InputStream.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
BufferedLineReaderInputStream(InputStream instream, int buffersize)
BufferedLineReaderInputStream(InputStream instream, int buffersize, int maxLineLen)

Method Summary

Modifier and Type	Method	Description
protected byte[]	buf()
int	byteAt(int pos)
int	capacity()
void	ensureCapacity(int len)
int	fillBuffer()
boolean	hasBufferedData()
int	indexOf(byte b)
int	indexOf(byte[] pattern)	Implements quick search algorithm as published by
int	indexOf(byte[] pattern, int off, int len)	Implements quick search algorithm as published by
int	indexOf(byte b, int off, int len)
protected int	length()
protected int	limit()
boolean	markSupported()
protected int	pos()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
protected boolean	readAllowed()
int	readLine(ByteArrayBuffer dst)	Reads one line of text into the given ByteArrayBuffer.
protected int	skip(int n)
String	toString()
void	truncate()
boolean	unread(ByteArrayBuffer buf)	Tries to unread the last read line.

Methods inherited from class java.io.FilterInputStream

available, close, mark, reset, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferedLineReaderInputStream

public BufferedLineReaderInputStream(InputStream instream,
                                     int buffersize,
                                     int maxLineLen)

BufferedLineReaderInputStream

public BufferedLineReaderInputStream(InputStream instream,
                                     int buffersize)

Method Detail

ensureCapacity

public void ensureCapacity(int len)

fillBuffer

public int fillBuffer()
               throws IOException

Throws:

IOException

hasBufferedData

public boolean hasBufferedData()

truncate

public void truncate()

readAllowed

protected boolean readAllowed()

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

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

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

readLine

public int readLine(ByteArrayBuffer dst)
             throws MaxLineLimitException,
                    IOException

Description copied from class: LineReaderInputStream

Reads one line of text into the given ByteArrayBuffer.

Specified by:

readLine in class LineReaderInputStream

Parameters:

dst - Destination

Returns:

number of bytes copied or -1 if the end of the stream has been reached.

Throws:

MaxLineLimitException - if the line exceeds a limit on the line length imposed by a subclass.

IOException - in case of an I/O error.

indexOf

public int indexOf(byte[] pattern,
                   int off,
                   int len)

Implements quick search algorithm as published by

SUNDAY D.M., 1990, A very fast substring search algorithm, Communications of the ACM . 33(8):132-142.

indexOf

public int indexOf(byte[] pattern)

Implements quick search algorithm as published by

SUNDAY D.M., 1990, A very fast substring search algorithm, Communications of the ACM . 33(8):132-142.

indexOf

public int indexOf(byte b,
                   int off,
                   int len)

indexOf

public int indexOf(byte b)

byteAt

public int byteAt(int pos)

buf

protected byte[] buf()

pos

protected int pos()

limit

protected int limit()

length

protected int length()

capacity

public int capacity()

skip

protected int skip(int n)

toString

public String toString()

Overrides:

toString in class Object

unread

public boolean unread(ByteArrayBuffer buf)

Description copied from class: LineReaderInputStream

Tries to unread the last read line. Implementation may refuse to unread a new buffer until the previous unread one has been competely consumed. Implementations will directly use the byte array backed by buf, so make sure to not alter it anymore once this method has been called.

Specified by:

unread in class LineReaderInputStream

Returns:

true if the unread has been succesfull.