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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 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.avro.tool;
Tool implementation for generating Avro JSON schemata from genavro format files.
public class GenAvroTool implements Tool {
  public int run(InputStream inPrintStream outPrintStream err,
                  List<Stringargsthrows Exception {
    InputStream parseIn = in;
    PrintStream parseOut = out;
    if (args.size() > 2 ||
        (args.size() == 1 && (args.get(0).equals("--help") ||
                              args.get(0).equals("-help")))) {
      err.println("Usage: GenAvroTool [in] [out]");
      err.println("If an output path is not specified, outputs to stdout.");
      err.println("If no input or output is specified, takes input from");
      err.println("stdin and outputs to stdin.");
      err.println("The special path \"-\" may also be specified to refer to");
      err.println("stdin and stdout.");
      return -1;
    if (args.size() >= 1 && ! "-".equals(args.get(0))) {
      parseIn = new FileInputStream(args.get(0));
    if (args.size() == 2 && ! "-".equals(args.get(1))) {
      parseOut = new PrintStream(new FileOutputStream(args.get(1)));
    GenAvro parser = new GenAvro(parseIn);
    Protocol p = parser.CompilationUnit();
    return 0;
  public String getName() {
    return "genavro";
  public String getShortDescription() {
    return "Generates a JSON schema from a GenAvro file";
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