dotnet-installer/src/dotnet/commands/dotnet-build/Program.cs

// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System.Collections.Generic;
using Microsoft.DotNet.Cli.CommandLine;
using Microsoft.DotNet.Cli.Utils;
using Microsoft.DotNet.Tools.MSBuild;

namespace Microsoft.DotNet.Tools.Build
{
    public class BuildCommand
    {
        public static int Run(string[] args)
        {
            DebugHelper.HandleDebugSwitch(ref args);

            CommandLineApplication app = new CommandLineApplication(throwOnUnexpectedArg: false);
            app.Name = "dotnet build";
            app.FullName = ".NET Builder";
            app.Description = "Builder for the .NET Platform. Delegates to the MSBuild 'Build' target in the project file.";
            app.AllowArgumentSeparator = true;
            app.ArgumentSeparatorHelpText = HelpMessageStrings.MSBuildAdditionalArgsHelpText;
            app.HelpOption("-h|--help");

            CommandArgument projectArgument = app.Argument("<PROJECT>",
                "The MSBuild project file to build. If a project file is not specified," +
                " MSBuild searches the current working directory for a file that has a file extension that ends in `proj` and uses that file.");

            CommandOption outputOption = app.Option("-o|--output <OUTPUT_DIR>", "Directory in which to place outputs", CommandOptionType.SingleValue);
            CommandOption frameworkOption = app.Option("-f|--framework <FRAMEWORK>", "Compile a specific framework", CommandOptionType.SingleValue);
            CommandOption configurationOption = app.Option("-c|--configuration <CONFIGURATION>", "Configuration under which to build", CommandOptionType.SingleValue);
            CommandOption versionSuffixOption = app.Option("--version-suffix <VERSION_SUFFIX>", "Defines the value for the $(VersionSuffix) property in the project", CommandOptionType.SingleValue);

            CommandOption noIncrementalOption = app.Option("--no-incremental", "Set this flag to turn off incremental build", CommandOptionType.NoValue);
            CommandOption noDependenciesOption = app.Option("--no-dependencies", "Set this flag to ignore project to project references and only build the root project", CommandOptionType.NoValue);

            app.OnExecute(() =>
            {
                List<string> msbuildArgs = new List<string>();

                if (!string.IsNullOrEmpty(projectArgument.Value))
                {
                    msbuildArgs.Add(projectArgument.Value);
                }

                if (noIncrementalOption.HasValue())
                {
                    msbuildArgs.Add("/t:Rebuild");
                }
                else
                {
                    msbuildArgs.Add("/t:Build");
                }

                if (outputOption.HasValue())
                {
                    msbuildArgs.Add($"/p:OutputPath={outputOption.Value()}");
                }

                if (frameworkOption.HasValue())
                {
                    msbuildArgs.Add($"/p:TargetFramework={frameworkOption.Value()}");
                }

                if (configurationOption.HasValue())
                {
                    msbuildArgs.Add($"/p:Configuration={configurationOption.Value()}");
                }

                if (versionSuffixOption.HasValue())
                {
                    msbuildArgs.Add($"/p:VersionSuffix={versionSuffixOption.Value()}");
                }

                if (noDependenciesOption.HasValue())
                {
                    msbuildArgs.Add("/p:BuildProjectReferences=false");
                }

                msbuildArgs.AddRange(app.RemainingArguments);

                return new MSBuildForwardingApp(msbuildArgs).Execute();
            });

            return app.Execute(args);
        }
    }
}