dotnetCampus.CommandLine

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dotnetCampus.CommandLine is probably the fastest command line parser in all .NET open-source projects.

Parsing a classical command line only takes 1091ns, thus 10 ticks.

Get Started

For your program Main method, write this code below:

class Program
{
    static void Main(string[] args)
    {
        var commandLine = CommandLine.Parse(args);
        var options = commandLine.As<Options>(new OptionsParser());

        // Then, use your Options instance here.
    }
}

You need to define the Options class as followed below:

class Options
{
    [Value(0)]
    public string FilePath { get; }

    [Option('s', "Silence")]
    public bool IsSilence { get; }

    [Option('m', "Mode")]
    public string StartMode { get; }

    [Option("StartupSessions")]
    public IReadonlyList<string> StartupSessions { get; }

    public Options(
        string filePath,
        bool isSilence,
        string startMode,
        IReadonlyList<string> startupSessions)
    {
        FilePath = filePath;
        IsSilence = isSilence;
        StartMode = startMode;
        StartupSessions = startupSessions;
    }
}

Then you can run your program by passing these kind of command line args:

Windows style：

> demo.exe "C:\Users\lvyi\Desktop\demo.txt" -s -Mode Edit -StartupSessions A B C

> demo.exe "C:\Users\lvyi\Desktop\demo.txt" /s /Mode Edit /StartupSessions A B C

Linux style：

$ demo.exe "C:/Users/lvyi/Desktop/demo.txt" -s --mode Edit --startup-sessions A B C

Notice that you cannot use different styles in a single command line.

For bool:

• You can pass true / True / false / False to specify a boolean value;
• You can pass nothing but only a switch.

It means that -s true, -s True, -s are the same.

For ValueAttribute and OptionAttribute:

• You can specify both on a single property.
• If there is a value without option the property got the value, but if another value with the specified option exists, the new value will override the old one.

[Value(0), Option('f', "File")]
public string FilePath { get; }

Engage, Contribute and Provide Feedback

Thank you very much for firing a new issue and providing new pull requests.

Issue

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• New Issue · dotnet-campus/dotnetCampus.CommandLine

Contributing Guide

Be kindly.

License

dotnetCampus.CommandLine is licensed under the MIT license.