org.snapscript.dx.util.Writers Maven / Gradle / Ivy
/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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.snapscript.dx.util;
import java.io.PrintWriter;
import java.io.Writer;
/**
* Utilities for dealing with {@code Writer}s.
*/
public final class Writers {
/**
* This class is uninstantiable.
*/
private Writers() {
// This space intentionally left blank.
}
/**
* Makes a {@code PrintWriter} for the given {@code Writer},
* returning the given writer if it already happens to be the right
* class.
*
* @param writer {@code non-null;} writer to (possibly) wrap
* @return {@code non-null;} an appropriate instance
*/
public static PrintWriter printWriterFor(Writer writer) {
if (writer instanceof PrintWriter) {
return (PrintWriter) writer;
}
return new PrintWriter(writer);
}
}