wca

Module :: wca

The tool to make CLI ( commands user interface ). It is able to aggregate external binary applications, as well as functions, which are written in your language.

Sample

#[ cfg( not( feature = "no_std" ) ) ]
{
    use wca::{ Args, Context, Type };

    fn main()
    {

      let ca = wca::CommandsAggregator::former()
      .command( "echo" )
        .hint( "prints all subjects and properties" )
        .subject().hint( "Subject" ).kind( Type::String ).optional( true ).end()
        .property( "property" ).hint( "simple property" ).kind( Type::String ).optional( true ).end()
        .routine( | args : Args, props | { println!( "= Args\n{args:?}\n\n= Properties\n{props:?}\n" ) } )
        .end()
      .command( "error" )
        .hint( "prints all subjects and properties" )
        .subject().hint( "Error message" ).kind( Type::String ).optional( true ).end()
        .routine( | args : Args | { println!( "Returns an error" ); Err( format!( "{}", args.get_owned::< String >( 0 ).unwrap_or_default() ) ) } )
        .end()
      .command( "exit" )
        .hint( "just exit" )
        .routine( || { println!( "exit" ); std::process::exit( 0 ) } )
        .end()
      .perform();

      let args = std::env::args().skip( 1 ).collect::< Vec< String > >();
      ca.perform( args ).unwrap();

    }
}

To add to your project

cargo add wca

Try out from the repository

git clone https://github.com/Wandalen/wTools
cd wTools
cd examples/wca_trivial
cargo run