org.norther.tammi.acorn.io
Class PartialInputStream

java.lang.Object
  java.io.InputStream
      org.norther.tammi.acorn.io.PartialInputStream

All Implemented Interfaces:

Closeable

public class PartialInputStream
extends InputStream

An input stream wrapper for reading partial streams of multipart MIME messages as specified in RFC1521.

Version:

$Id: PartialInputStream.java,v 1.8 2009/09/28 15:08:49 cvsimp Exp $

Author:

Ilkka Priha

Constructor Summary

PartialInputStream(InputStream in, String boundary)
Constructs a new partial input stream.

Method Summary

int	available() Returns the number of bytes available in the multipart stream.
boolean	isPartAvailable() Checks whether the next partial stream is available.
int	read() Reads one byte of data from the current part.
int	read(byte[] b, int off, int len) Reads n bytes of data from the current part.
long	skip(long n) Skips the given number of bytes.

Methods inherited from class java.io.InputStream

close, mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

PartialInputStream

public PartialInputStream(InputStream in,
                          String boundary)

Constructs a new partial input stream.

Parameters:

in - the multipart input stream.

boundary - the MIME boundary pattern.

Method Detail

available

public int available()
              throws IOException

Returns the number of bytes available in the multipart stream.

Overrides:

available in class InputStream

Returns:

the number of available bytes.

Throws:

IOException - for I/O errors.

read

public int read()
         throws IOException

Reads one byte of data from the current part.

Specified by:

read in class InputStream

Returns:

a byte of data, or -1 if end of file.

Throws:

IOException - for I/O errors.

read

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

Reads n bytes of data from the current part.

Overrides:

read in class InputStream

Parameters:

b - a byte buffer.

off - an offet to the buffer.

len - the number of bytes to read.

Returns:

the number of bytes read or -1.

Throws:

IOException - for I/O errors.

skip

public long skip(long n)
          throws IOException

Skips the given number of bytes.

Overrides:

skip in class InputStream

Parameters:

n - the number of bytes to skip.

Returns:

the number of bytes skipped.

Throws:

IOException - for I/O errors.

isPartAvailable

public boolean isPartAvailable()
                        throws IOException

Checks whether the next partial stream is available.

Returns:

true if available, false otherwise.

Throws:

IOException - for I/O errors.