/*
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.orc.tools;

import org.apache.hadoop.conf.Configuration;

import java.io.IOException;
import java.util.Properties;

/**
 * Print the version of this ORC tool.
 */
public class PrintVersion {
  public static final String UNKNOWN = "UNKNOWN";
  public static final String FILE_NAME = "META-INF/maven/org.apache.orc/orc-tools/pom.properties";

  static void main(Configuration conf, String[] args) throws IOException {
    ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
    try (java.io.InputStream resourceStream = classLoader.getResourceAsStream(FILE_NAME)) {
      if (resourceStream == null) {
        throw new IOException("Could not find " + FILE_NAME);
      }
      Properties props = new Properties();
      props.load(resourceStream);
      System.out.println("ORC " + props.getProperty("version", UNKNOWN));
    }
  }
}
