nextflow.file

Class FastBufferedOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

nextflow.file.FastBufferedOutputStream

All Implemented Interfaces:

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

public class FastBufferedOutputStream
extends java.io.FilterOutputStream

The class implements a buffered output stream. By setting up such an output stream, an application can write bytes to the underlying output stream without necessarily causing a call to the underlying system for each byte written.

Since:

JDK1.0

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buf The internal buffer where data is stored.
protected int	count The number of valid bytes in the buffer.

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
FastBufferedOutputStream(java.io.OutputStream out) Creates a new buffered output stream to write data to the specified underlying output stream.
FastBufferedOutputStream(java.io.OutputStream out, byte[] buf)
FastBufferedOutputStream(java.io.OutputStream out, int size) Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size.

Method Summary

Methods

Modifier and Type	Method and Description
void	flush() Flushes this buffered output stream.
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this buffered output stream.
void	write(int b) Writes the specified byte to this buffered output stream.

Methods inherited from class java.io.FilterOutputStream

close, write

Methods inherited from class java.lang.Object

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

Field Detail

buf

protected byte[] buf

The internal buffer where data is stored.

count

protected int count

The number of valid bytes in the buffer. This value is always in the range 0 through buf.length; elements buf[0] through buf[count-1] contain valid byte data.

Constructor Detail

FastBufferedOutputStream

public FastBufferedOutputStream(java.io.OutputStream out)

Creates a new buffered output stream to write data to the specified underlying output stream.

Parameters:

out - the underlying output stream.

FastBufferedOutputStream

public FastBufferedOutputStream(java.io.OutputStream out,
                        int size)

Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size.

Parameters:

out - the underlying output stream.

size - the buffer size.

Throws:

java.lang.IllegalArgumentException - if size <= 0.

FastBufferedOutputStream

public FastBufferedOutputStream(java.io.OutputStream out,
                        byte[] buf)

Method Detail

write

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

Writes the specified byte to this buffered output stream.

Overrides:

write in class java.io.FilterOutputStream

Parameters:

b - the byte to be written.

Throws:

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

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 buffered output stream.

Ordinarily this method stores bytes from the given array into this stream's buffer, flushing the buffer to the underlying output stream as needed. If the requested length is at least as large as this stream's buffer, however, then this method will flush the buffer and write the bytes directly to the underlying output stream. Thus redundant BufferedOutputStreams will not copy data unnecessarily.

Overrides:

write in class java.io.FilterOutputStream

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.

flush

public void flush()
           throws java.io.IOException

Flushes this buffered output stream. This forces any buffered output bytes to be written out to the underlying output stream.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.FilterOutputStream

Throws:

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

See Also:

FilterOutputStream.out