scriptella.driver.text.ConsoleAdapters Maven / Gradle / Ivy
/*
* Copyright 2006-2012 The Scriptella Project Team.
*
* 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 scriptella.driver.text;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
/**
* Pre Java SE 6 adapters for {@link System#in} and {@link System#out}
* TODO: Move this class to a spi.support.text package.
*
* @author Fyodor Kupolov
* @version 1.0
*/
public class ConsoleAdapters {
/**
* Returns the reader for System.in.
*
* @param charsetName charset name, can be null.
* @return System.in reader.
* @throws UnsupportedEncodingException if specified charset is unsupported
*/
public static Reader getConsoleReader(String charsetName) throws UnsupportedEncodingException {
return charsetName == null ? new SystemInReader() : new SystemInReader(charsetName);
}
/**
* Returns the writer for System.out.
*
* @param charsetName charset name, can be null.
* @return System.out writer.
* @throws UnsupportedEncodingException if specified charset is unsupported
*/
public static Writer getConsoleWriter(String charsetName) throws UnsupportedEncodingException {
return charsetName == null ? new SystemOutWriter() : new SystemOutWriter(charsetName);
}
/**
* A simple {@link java.io.Reader} adapter for {@link java.io.InputStream}.
*/
static class SystemInReader extends InputStreamReader {
public SystemInReader() {
super(System.in);
}
public SystemInReader(String charsetName) throws UnsupportedEncodingException {
super(System.in, charsetName);
}
public void close() throws IOException {
}
}
/**
* A simple {@link java.io.Writer} adapter for {@link java.io.PrintStream}.
*/
static class SystemOutWriter extends OutputStreamWriter {
public SystemOutWriter() throws UnsupportedEncodingException {
super(System.out);
}
public SystemOutWriter(String charsetName) throws UnsupportedEncodingException {
super(System.out, charsetName);
}
public void close() throws IOException {
flush();
}
}
}