org.jruby.embed.io

Class WriterOutputStream

java.lang.Object

java.io.OutputStream

org.jruby.embed.io.WriterOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class WriterOutputStream
extends java.io.OutputStream

A WriterOutputStream converts java.io.Writer to java.io.OutputStream.

Field Summary

Fields

Modifier and Type	Field and Description
private java.nio.charset.CharsetDecoder	decoder
private boolean	isOpen
private java.io.Writer	writer

Constructor Summary

Constructors

Constructor and Description
WriterOutputStream(java.io.Writer writer) Creates WriterOutputStream from given java.io.Writer object with a default encoding.
WriterOutputStream(java.io.Writer writer, java.lang.String encoding) Creates WriterOutputStream from given java.io.Writer object with a specified encoding.

Method Summary

Modifier and Type	Method and Description
private void	byte2char(java.nio.ByteBuffer bytes, java.nio.CharBuffer chars)
void	close() Closes this output stream and releases any system resources associated with this stream.
void	flush() Flushes this output stream and forces any buffered output bytes to be written out.
void	write(byte[] b) Writes b.length bytes from the specified byte array to this output stream.
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this output stream.
void	write(int b) Writes the specified byte to this output stream.

Methods inherited from class java.lang.Object

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

Field Detail

writer

private final java.io.Writer writer

isOpen

private boolean isOpen

decoder

private java.nio.charset.CharsetDecoder decoder

Constructor Detail

WriterOutputStream

public WriterOutputStream(java.io.Writer writer)

Creates WriterOutputStream from given java.io.Writer object with a default encoding.

Parameters:

writer - java.io.Writer object to be converted to.

WriterOutputStream

public WriterOutputStream(java.io.Writer writer,
                          java.lang.String encoding)

Creates WriterOutputStream from given java.io.Writer object with a specified encoding.

Parameters:

writer - java.io.Writer object to be converted to.

Method Detail

close

public void close()
           throws java.io.IOException

Closes this output stream and releases any system resources associated with this stream. The general contract of close is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException - if an I/O error occurs.

flush

public void flush()
           throws java.io.IOException

Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

If the intended destination of this stream is an abstraction provided by the underlying operating system, for example a file, then flushing the stream guarantees only that bytes previously written to the stream are passed to the operating system for writing; it does not guarantee that they are actually written to a physical device such as a disk drive.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(int b)
           throws java.io.IOException

Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Specified by:

write in class java.io.OutputStream

Parameters:

b - the byte.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

write

public void write(byte[] b)
           throws java.io.IOException

Writes b.length bytes from the specified byte array to this output stream. The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

Throws:

java.io.IOException - if an I/O error occurs.

See Also:

OutputStream.write(byte[], int, int)

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this output stream. The general contract for write(b, off, len) is that some of the bytes in the array b are written to the output stream in order; element b[off] is the first byte written and b[off+len-1] is the last byte written by this operation.

If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown.

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException is thrown if the output stream is closed.

byte2char

private void byte2char(java.nio.ByteBuffer bytes,
                       java.nio.CharBuffer chars)
                throws java.io.IOException

Throws:

java.io.IOException