/*
* Copyright 2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.logging.internal;
import org.gradle.api.UncheckedIOException;
import org.gradle.api.logging.StandardOutputListener;
import java.io.Closeable;
import java.io.IOException;
/**
* A {@link org.gradle.logging.StyledTextOutput} implementation which writes text to some char stream. Ignores any
* styling information.
*/
public class StreamingStyledTextOutput extends AbstractStyledTextOutput implements Closeable {
private final StandardOutputListener listener;
private final Closeable closeable;
/**
* Creates a text output which forwards text to the given listener.
* @param listener The listener.
*/
public StreamingStyledTextOutput(StandardOutputListener listener) {
this(listener, listener);
}
/**
* Creates a text output which writes text to the given appendable.
* @param appendable The appendable.
*/
public StreamingStyledTextOutput(final Appendable appendable) {
this(appendable, new StandardOutputListener() {
public void onOutput(CharSequence output) {
try {
appendable.append(output);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
});
}
private StreamingStyledTextOutput(Object target, StandardOutputListener listener) {
this.listener = listener;
closeable = target instanceof Closeable ? (Closeable) target : null;
}
@Override
protected void doAppend(String text) {
listener.onOutput(text);
}
/**
* Closes the target object if it implements {@link java.io.Closeable}.
*/
public void close() throws IOException {
if (closeable != null) {
closeable.close();
}
}
}