groovy.ui

Class SystemOutputInterceptor

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

groovy.ui.SystemOutputInterceptor

All Implemented Interfaces:

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

public class SystemOutputInterceptor
extends java.io.FilterOutputStream

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

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
SystemOutputInterceptor(Closure callback) Constructor
SystemOutputInterceptor(Closure callback, boolean output) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
void	start() Starts intercepting System.out/System.err
void	stop() Stops intercepting System.out/System.err, sending output to wherever 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 wherever it was going when this interceptor was created.

write

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

Intercepts output - moret common case of byte[]

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException

write

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

Intercepts output - single characters

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException