Package aQute.lib.redirect

Class Redirect

java.lang.Object

aQute.lib.redirect.Redirect

public class Redirect
extends Object

Utility to redirect the stdin/stdout/stderr when running a command

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	captureStderr
private boolean	captureStdout
private Capture	cstderr
private Capture	cstdout
private final OutputStream	stderr
private final InputStream	stdin
private final OutputStream	stdout

Constructor Summary

Constructors

Constructor	Description
Redirect(InputStream stdin, OutputStream stdout, OutputStream stderr)	Create a stdio redirector
Redirect(OutputStream stdout, OutputStream stderr)	Create a stdio redirector without any input
Redirect(String stdin, OutputStream stdout, OutputStream stderr)	Create a stdio redirector

Method Summary

Modifier and Type	Method	Description
<R> R	apply(SupplierWithException<R> f)	Call the supplier and return the result.
private PrintStream	build(PrintStream original, OutputStream redirect, Capture capture)
Redirect	captureStderr()	Capture stderr during an apply.
Redirect	captureStdout()	Capture stdout during an apply.
String	getContent()
String	getStderr()
String	getStdout()

Methods inherited from class java.lang.Object

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

Field Details

stdin

private final InputStream stdin

stdout

private final OutputStream stdout

stderr

private final OutputStream stderr

captureStdout

private boolean captureStdout

captureStderr

private boolean captureStderr

cstdout

private Capture cstdout

cstderr

private Capture cstderr

Constructor Details

Redirect

public Redirect(InputStream stdin,
 OutputStream stdout,
 OutputStream stderr)

Create a stdio redirector

Parameters:

stdin - the stdin read from or null for System.in

stdout - the stdout to write to or null for System.out

stderr - the stderr to write to or null for System.err

Redirect

public Redirect(String stdin,
 OutputStream stdout,
 OutputStream stderr)

Create a stdio redirector

Parameters:

stdin - the stdin read from or null for System.in

stdout - the stdout to write to or null for System.out

stderr - the stderr to write to or null for System.err

Redirect

public Redirect(OutputStream stdout,
 OutputStream stderr)

Create a stdio redirector without any input

Parameters:

stdout - the stdout to write to or null for System.out

stderr - the stderr to write to or null for System.err

Method Details

captureStdout

public Redirect captureStdout()

Capture stdout during an apply. Every apply will be captured seperately.

Returns:

this

captureStderr

public Redirect captureStderr()

Capture stderr during an apply. Every apply will be captured seperately.

Returns:

this

apply

public <R> R apply(SupplierWithException<R> f)
            throws Exception

Call the supplier and return the result. While the supplier is active, the System streams are redirected as instructed by the constructor. Redirection & capture will only take place on the current thread. The original state will be introduced afterwards.

Although the system streams are redirected, the original output streams are still written to.

Type Parameters:

R - the type for the supplier

Parameters:

f - the supplier

Returns:

the return of the supplier.

Throws:

Exception

build

private PrintStream build(PrintStream original,
 OutputStream redirect,
 Capture capture)

getStderr

public String getStderr()

getStdout

public String getStdout()

getContent

public String getContent()