karaf-2.2.x/shell/dev/src/main/java/org/apache/karaf/shell/dev/util/IO.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.karaf.shell.dev.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Helper class for I/O operations
 */
public class IO {

    /**
     * Write text from an InputStream to a file
     */
    public static void copyTextToFile(InputStream stream, File file) throws IOException {
        PrintWriter writer = null;
        Scanner scanner = null;

        try {
            scanner = new Scanner(stream);
            writer = new PrintWriter(file);

            while (scanner.hasNextLine()) {
                writer.printf("%s%n", scanner.nextLine());
            }

            writer.flush();
        } finally {
            if (scanner != null) {
                scanner.close();
            }
            if (writer != null) {
                writer.close();
            }
        }
    }
}