org.apache.commons.net.io
Class FromNetASCIIOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          org.apache.commons.net.io.FromNetASCIIOutputStream

All Implemented Interfaces:

Closeable, Flushable

public final class FromNetASCIIOutputStream
extends FilterOutputStream

This class wraps an output stream, replacing all occurrences of <CR><LF> (carriage return followed by a linefeed), which is the NETASCII standard for representing a newline, with the local line separator representation. You would use this class to implement ASCII file transfers requiring conversion from NETASCII.

Because of the translation process, a call to flush() will not flush the last byte written if that byte was a carriage return. A call to close() , however, will flush the carriage return.

Author:

Daniel F. Savarese

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

FromNetASCIIOutputStream(OutputStream output)
Creates a FromNetASCIIOutputStream instance that wraps an existing OutputStream.

Method Summary

void	close() Closes the stream, writing all pending data.
void	write(byte[] buffer) Writes a byte array to the stream.
void	write(byte[] buffer, int offset, int length) Writes a number of bytes from a byte array to the stream starting from a given offset.
void	write(int ch) Writes a byte to the stream.

Methods inherited from class java.io.FilterOutputStream

flush

Methods inherited from class java.lang.Object

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

Constructor Detail

FromNetASCIIOutputStream

public FromNetASCIIOutputStream(OutputStream output)

Creates a FromNetASCIIOutputStream instance that wraps an existing OutputStream.

Parameters:

output - The OutputStream to wrap.

Method Detail

write

public void write(int ch)
           throws IOException

Writes a byte to the stream. Note that a call to this method might not actually write a byte to the underlying stream until a subsequent character is written, from which it can be determined if a NETASCII line separator was encountered. This is transparent to the programmer and is only mentioned for completeness.

Overrides:

write in class FilterOutputStream

Parameters:

ch - The byte to write.

Throws:

IOException - If an error occurs while writing to the underlying stream.

write

public void write(byte[] buffer)
           throws IOException

Writes a byte array to the stream.

Overrides:

write in class FilterOutputStream

Parameters:

buffer - The byte array to write.

Throws:

IOException - If an error occurs while writing to the underlying stream.

write

public void write(byte[] buffer,
                  int offset,
                  int length)
           throws IOException

Writes a number of bytes from a byte array to the stream starting from a given offset.

Overrides:

write in class FilterOutputStream

Parameters:

buffer - The byte array to write.

offset - The offset into the array at which to start copying data.

length - The number of bytes to write.

Throws:

IOException - If an error occurs while writing to the underlying stream.

close

public void close()
           throws IOException

Closes the stream, writing all pending data.

Specified by:

close in interface Closeable

Overrides:

close in class FilterOutputStream

Throws:

IOException - If an error occurs while closing the stream.