Crate subcmd

Cargo style subcommand

This library help to build an app that use a similar command line interface as Cargo or Git.

Example

The following example show a simple program with two subcommand:

• cargo build
• cargo clean

extern crate subcmd;
use subcmd::CmdHandler;
use subcmd::Command;

struct CmdBuild;

impl Command for CmdBuild {
    fn name<'a>(&self) -> &'a str {"build"}
    fn help<'a>(&self) -> &'a str {"Usage: cargo build [options]"}
    fn description<'a>(&self) -> &'a str { "Compile the current project" }
    fn run(&self, argv: &Vec<String>) {
        println!("I'm building your files");
    }
}

struct CmdClean;

impl Command for CmdClean {
    fn name<'a>(&self) -> &'a str {"clean"}
    fn help<'a>(&self) -> &'a str {"Usage: cargo clean [options]"}
    fn description<'a>(&self) -> &'a str { "Remove the target directory" }
    fn run(&self, argv: &Vec<String>) {
        println!("I'm cleaning your files");
    }
}

fn main() {
    let mut handler = CmdHandler::new();
    handler.add(Box::new(CmdBuild));
    handler.add(Box::new(CmdClean));
    handler.run();
}

Structs

CmdHandler

Command line parser and subcommand runner

CmdWrapper

This wrapper hold a command object and a arguments vectors.

Message

A Message to be printed

Enums

CmdResult

Result of a CmdHandler::run

Traits

Command

This trait must be implemented for each subcommand