com.sapportals.wcm.util.mmparser

Class PartInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          com.sapportals.wcm.util.mmparser.PartInputStream

public class PartInputStream

extends FilterInputStream

A PartInputStream filters a MMInputStream , providing access to a single mime part contained in it.

Note the readLine method of MMInputStream adds the \r\n also to the end of the last line. We have to cut those chars. We must always maintain at least 2 characters in the buffer to allow us to trim when necessary.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Method Summary

int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	close() Closes this input stream and releases any system resources associated with the stream.
int	read() See the general contract of the read method of InputStream .
int	read(byte[] b) See the general contract of the read method of InputStream .
int	read(byte[] b, int off, int len) See the general contract of the read method of InputStream .

Methods inherited from class java.io.FilterInputStream

mark, markSupported, reset, skip

Methods inherited from class java.lang.Object

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

Method Detail

read

public int read()
         throws IOException

See the general contract of the read method of InputStream .

Returns -1 (end of file) when the MIME boundary of this part is encountered.

Returns:

the next byte of data, or -1 if the end of the stream is reached.

Throws:

IOException - if an I/O error occurs.

read

public int read(byte[] b)
         throws IOException

See the general contract of the read method of InputStream .

Returns -1 (end of file) when the MIME boundary of this part is encountered.

Parameters:

b - the buffer into which the data is read.

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

IOException - if an I/O error occurs.

read

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

See the general contract of the read method of InputStream .

Returns -1 (end of file) when the MIME boundary of this part is encountered.

Parameters:

b - the buffer into which the data is read.

off - the start offset of the data.

len - the maximum number of bytes read.

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

IOException - if an I/O error occurs.

available

public int available()
              throws IOException

Returns the number of bytes that can be read from this input stream without blocking. This is a standard InputStream idiom to deal with buffering gracefully, and is not same as the length of the part arriving in this stream.

Returns:

the number of bytes that can be read from the input stream without blocking.

Throws:

IOException - if an I/O error occurs.

close

public void close()
           throws IOException

Closes this input stream and releases any system resources associated with the stream.

This method will read any unread data in the MIME part so that the next part starts an an expected place in the parent InputStream . Note that if the client code forgets to call this method on error, MultipartParser will call it automatically if you call readNextPart() .

Throws:

IOException - if an I/O error occurs.