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parsing args in dotnet core
public static void Main(string[] args)
{
var app = new Microsoft.Extensions.CommandLineUtils.CommandLineApplication();
var catapult = app.Command("catapult", config => {
config.OnExecute(()=>{
config.ShowHelp(); //show help for catapult
return 1; //return error since we didn't do anything
});
config.HelpOption("-? | -h | --help"); //show help on --help
});
catapult.Command("help", config => {
config.Description = "get help!";
config.OnExecute(()=>{
catapult.ShowHelp("catapult");
return 1;
});
});
catapult.Command("list", config => {
config.Description = "list catapults";
config.HelpOption("-? | -h | --help");
config.OnExecute(()=>{
Console.WriteLine("a");
Console.WriteLine("b");
return 0;
});
});
catapult.Command("add", config => {
config.Description = "Add a catapult";
config.HelpOption("-? | -h | --help");
var arg = config.Argument("name", "name of the catapult", false);
config.OnExecute(()=>{
if(!string.IsNullOrWhiteSpace(arg.Value))
{
//add snowballs somehow
Console.WriteLine($"added {arg.Value}");
return 0;
}
return 1;
});
});
catapult.Command("fling", config =>{
config.Description = "fling snow";
config.HelpOption("-? | -h | --help");
var ball = config.Argument("snowballId", "snowball id", false);
var cata = config.Argument("catapultId", "id of catapult to use", false);
config.OnExecute(()=>{
//actually do something
Console.WriteLine($"threw snowball: {ball.Value} with {cata.Value}");
return 0;
});
});
var snowball = app.Command("snowball", config => {
config.OnExecute(()=>{
config.ShowHelp(); //show help for catapult
return 1; //return error since we didn't do anything
});
config.HelpOption("-? | -h | --help"); //show help on --help
});
snowball.Command("help", config => {
config.Description = "get help!";
config.OnExecute(()=>{
catapult.ShowHelp("snowball");
return 1;
});
});
snowball.Command("list", config => {
config.HelpOption("-? | -h | --help");
config.Description = "list snowballs";
config.OnExecute(()=>{
Console.WriteLine("1");
Console.WriteLine("2");
return 0;
});
});
snowball.Command("add", config => {
config.Description = "Add a snowball";
config.HelpOption("-? | -h | --help");
var arg = config.Argument("name", "name of the snowball", false);
config.OnExecute(()=>{
if(!string.IsNullOrWhiteSpace(arg.Value))
{
//add snowballs somehow
Console.WriteLine($"added {arg.Value}");
return 0;
}
return 0;
});
});
//give people help with --help
app.HelpOption("-? | -h | --help");
var result = app.Execute(args);
Environment.Exit(result);
}
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