argumentsparser's Introduction

Arguments Parser

Arguments parser helps wire command line arguments to the methods that should handle them.

Example:

You are designing a program that should support merge command, should take an argument named branchName and an optional force flag

This is how you are picturing it beeing called:

coolutil.exe merge myNewBranch force


public class CommandHandler
{
    [Command]
    public void Merge(string branchName, bool force)
    {         
    }
}

static void Main(string[] args)
{
    var router = new Router();
    router.Route(args);
}

ArgumentsParser assumes a convention that Handler Methods are names after commands: if console application takes merge as a first argument, by convention, argument parser will try to find handler method named Merge (case insensitive)

You can override this convention by providing a Name argument to the CommandAttribute:

public class CommandHandler
{
    [Command(Name="merge")]
    public void AnyMethodName(string branchName, bool force)
    {         
    }
}

Dependency Injection support

Arguments parser supports Common Service Locator:

Call DependencyResolver.SetRosolver with your favourite dependency injection repository and ArgumentParser will inject the dependencies from the ServiceLocator, when constructing handler objects:

DependencyResolver.SetResolver(new StructureMapServiceLocator());

Alternativelly, you can implement IDependencyResolver interface to provide mapping for dependency resoltion to any dependency injection framework and register it with DependencyResolver:

public class StructureMapDependencyResolver : IDependencyResolver
{
    public object GetService(Type serviceType)
    {
        return ObjectFactory.GetInstance(serviceType);
    }
}

 DependencyResolver.SetResolver(new StructureMapDependencyResolver());

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