appcore-args

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Author: dnettoRaw

Português | Français

Dependency-free, cross-platform command-line parsing, help, validation and shell completion primitives for AppCore executables.

The crate has independent SemVer, no dependencies and can be consumed by any Rust executable without the AppCore Runtime.

appcore-args provides nested commands, inherited options, typed and bounded arguments, deterministic errors, generated help, completion candidates and dynamic completion scripts for Bash, Zsh, Fish and PowerShell. It executes no Runtime behavior and uses no unsafe code.

use appcore_args::{ArgumentSpec, CliParser, CliSpec, CommandSpec, OptionSpec, RawArgs};

let spec = CliSpec::new("demo")
    .option(OptionSpec::flag("verbose").short('v'))
    .command(CommandSpec::new("run").argument(
        ArgumentSpec::new("mode").required(true).possible_value("safe"),
    ));
let parsed = CliParser::new(&spec)
    .parse(&RawArgs::parse(["run", "safe", "-v"])? )?;

assert_eq!(parsed.command_path(), &["run"]);
assert!(parsed.has_flag("verbose"));
# Ok::<(), Box<dyn std::error::Error>>(())

See the English guide, the minimal example and the intermediate example. API documentation is available on docs.rs.

License: MIT.