groovy.ui
Class SystemOutputInterceptor

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          groovy.ui.SystemOutputInterceptor

All Implemented Interfaces:

Closeable, Flushable

public class SystemOutputInterceptor
extends FilterOutputStream

Intercepts System.out/System.err. Implementation helper for Console.groovy.

Version:

$Id: SystemOutputInterceptor.java 18936 2010-01-08 03:40:36Z roshandawrani $

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

SystemOutputInterceptor(Closure callback)
Constructor

SystemOutputInterceptor(Closure callback, boolean output)
Constructor

Method Summary

void	start() Starts intercepting System.out/System.err
void	stop() Stops intercepting System.out/System.err, sending output to whereever it was going when this interceptor was created.
void	write(byte[] b, int off, int len) Intercepts output - moret common case of byte[]
void	write(int b) Intercepts output - single characters

Methods inherited from class java.io.FilterOutputStream

close, flush, write

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemOutputInterceptor

public SystemOutputInterceptor(Closure callback)

Constructor

Parameters:

callback - accepts a string to be sent to std out and returns a Boolean. If the return value is true, output will be sent to System.out, otherwise it will not.

SystemOutputInterceptor

public SystemOutputInterceptor(Closure callback,
                               boolean output)

Constructor

Parameters:

callback - accepts a string to be sent to std out and returns a Boolean. If the return value is true, output will be sent to System.out/System.err, otherwise it will not.

output - flag that tells whether System.out needs capturing ot System.err

Method Detail

start

public void start()

Starts intercepting System.out/System.err

stop

public void stop()

Stops intercepting System.out/System.err, sending output to whereever it was going when this interceptor was created.

write

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

Intercepts output - moret common case of byte[]

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Intercepts output - single characters

Overrides:

write in class FilterOutputStream

Throws:

IOException