org.apache.whirr.cli.command.VersionCommand.java Source code

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Here is the source code for org.apache.whirr.cli.command.VersionCommand.java

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/**
 * 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.whirr.cli.command;

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.List;

import org.apache.commons.io.IOUtils;
import org.apache.whirr.command.Command;
import org.jclouds.JcloudsVersion;

public class VersionCommand extends Command {

    public VersionCommand() {
        super("version", "Print the version number and exit.");
    }

    @Override
    public int run(InputStream in, PrintStream out, PrintStream err, List<String> args) throws Exception {
        InputStream input = getClass().getResourceAsStream("/version-banner.txt");
        if (input == null) {
            err.printf("Cannot determine version number\n");
            return -1;
        }
        out.write(IOUtils.toByteArray(input));
        out.println("jclouds " + JcloudsVersion.get().toString());
        return 0;
    }

    @Override
    public void printUsage(PrintStream stream) throws IOException {
    }

}