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Updating dotnet repl to provide better help text and support argument passthrough to the target REPL.

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This commit is contained in:
Tanner Gooding 2015-12-29 15:53:42 -08:00
parent 0ecbc6ea9a
commit df6610166b
1 changed files with 58 additions and 14 deletions
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72
src/Microsoft.DotNet.Tools.Repl/Program.cs
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@ -2,6 +2,7 @@
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System;
using System.Collections.Generic;
using Microsoft.Dnx.Runtime.Common.CommandLine;
using Microsoft.DotNet.Cli.Utils;
@ -9,38 +10,81 @@ namespace Microsoft.DotNet.Tools.Repl
{
public sealed class Program
{
private const string DefaultReplLanguage = "csharp";
private const string AppName = "dotnet repl";
private const string AppFullName = ".NET interactive REPL";
private const string AppDescription = "Interactive REPL for the .NET platform";
private static readonly string AppHelpText = $@"{AppFullName}
Usage: {AppName} [language] [arguments]
Languages:
csharp|csi Launches the C# REPL (default)
Arguments:
[arguments] Arguments to pass to the target REPL
Options:
-h|--help Show help information
";
public static int Main(string[] args)
{
DebugHelper.HandleDebugSwitch(ref args);
var app = new CommandLineApplication();
app.Name = "dotnet repl";
app.FullName = ".NET interactive REPL";
app.Description = "Interactive REPL for the .NET platform";
app.HelpOption("-h|--help");
var language = app.Argument("<LANGUAGE>", "The interactive programming language, defaults to csharp");
var app = new CommandLineApplication(throwOnUnexpectedArg: false) {
Name = "dotnet repl",
FullName = ".NET interactive REPL",
Description = "Interactive REPL for the .NET platform"
};
app.OnExecute(() => Run(language.Value));
var language = app.Argument("[language]", "The interactive programming language, defaults to csharp");
var help = app.Option("-h|--help", "Show help information", CommandOptionType.NoValue);
app.OnExecute(() => Run(language.Value, help.HasValue(), app.RemainingArguments));
return app.Execute(args);
}
private static int Run(string languageOpt)
private static void ShowHelp()
{
Console.WriteLine(AppHelpText);
}
private static int Run(string language, bool help, List<string> remainingArguments)
{
if (language == null)
{
if (help)
{
ShowHelp();
return 0;
}
language = DefaultReplLanguage;
}
string replName;
if ((languageOpt == null) || (languageOpt == "csharp"))
if (language.Equals("csharp") || language.Equals("csi"))
{
replName = "csi";
}
else
{
Reporter.Error.WriteLine($"Unrecognized language: {languageOpt}".Red());
Reporter.Error.WriteLine($"Unrecognized language: {language}".Red());
return -1;
}
var command = Command.Create($"dotnet-repl-{replName}", string.Empty)
if (help)
{
remainingArguments.Add("--help");
}
return Command.Create($"dotnet-repl-{replName}", remainingArguments)
.ForwardStdOut()
.ForwardStdErr();
var result = command.Execute();
return result.ExitCode;
.ForwardStdErr()
.Execute()
.ExitCode;
}
}
}