_Samples/Example_Arguments.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Data;
using System.Data.Common;

//<doc:using>
using ComLib;
using ComLib.Arguments;
//</doc:using>
using ComLib.Application;


namespace ComLib.Samples
{
    /// <summary>
    /// Example for the Arguments namespace.
    /// </summary>
    public class Example_Arguments : App
    {
		/// <summary>
        /// Run the application.
        /// </summary>
        public override BoolMessageItem  Execute()
        {
			//<doc:example>        
            Args.InitServices((textargs) => ComLib.LexArgs.ParseList(textargs), (arg) => ComLib.Subs.Substitutor.Substitute(arg));

            // Sample raw command line args.
            string[] rawArgs = new string[] { "-config:prod.xml", "-date:${t-1}", "-readonly:true", "myApplicationId" };

            // Option 1. Statically parse using -, : as prefix/separator.
            Args args = Args.Parse(rawArgs, "-", ":").Item;
            Console.WriteLine("Config : {0},  BusinessDate : {1}, [0] : {2}", args.Named["config"], args.Named["date"], args.Positional[0]);

            // Option 2. Statically parse args and apply them on an object.
            StartupArgs reciever = new StartupArgs();
            bool accepted = Args.Accept(rawArgs, "-", ":", reciever);
            Console.WriteLine(string.Format("Accepted config : {0}, date : {1}, readonly : {2}, settingsId: {3}",
                              reciever.Config, reciever.BusinessDate, reciever.ReadonlyMode, reciever.DefaultSettingsId));

            // Option 3: Instance based parsing with Fluent-like Schema population.
            Args args2 = new Args("-", ":").Schema.AddNamed<string>("config").Required.DefaultsTo("dev.xml").Describe("Configuration file")
                                                  .AddNamed<bool>("readonly").Required.DefaultsTo(false).Describe("Run app in readonly mode")
                                                  .AddNamed<DateTime>("date").Required.DefaultsTo(DateTime.Today).Interpret.Describe("Business date").Examples("${t-1}", "${today} | ${t-1}")
                                                  .AddPositional<int>(0).Optional.Describe("Application Id").Args;
            args2.DoParse(rawArgs);

            // Check for -help, -version -info
            rawArgs = new string[] { "-help" };
            Args args3 = new Args(rawArgs, "-", ":");
            if (args3.IsHelp)
            {
                // Usage Option 1. Show usage of the arguments.
                Console.WriteLine(args2.GetUsage("My Sample Application"));

                // Usage Option 2. Display usage using reciever. 
                // ( NOTE: -help is automatically interpreted to display args usage).