src/dotnet/tools/lucene-cli/Program.cs

using Lucene.Net.Configuration;
using Microsoft.Extensions.Configuration;
using System;

namespace Lucene.Net.Cli
{
    /*
     * 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.
     */
    public class Program
    {
        public static int Main(string[] args)
        {
            var configuration = new ConfigurationBuilder()
                .AddEnvironmentVariables(prefix: "lucene:") // Use a custom prefix to only load Lucene.NET settings 
                .AddJsonFile("appsettings.json")
                .Build();
            ConfigurationSettings.SetConfigurationFactory(new ConfigurationFactory(configuration));

            int result = CommandLineOptions.Parse(args);

#if DEBUG
            Console.ReadKey();
#endif

            return result;
        }
    }
}