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//! Gentoo and PMS related utils.
//!
//! Currently implements:
//! - parsers for atoms and DEPEND expressions
//! - strongly typed representations of atoms, versions, etc
//! - version comparison and equality impls
//! - iterator over repos categories and ebuilds
//!
//! Planned features
//! - profile evaluation
//! - vdb reader
//! - sourcing ebuilds with bash
//!
#![deny(clippy::pedantic, unused_imports)]
#![allow(
dead_code,
unstable_name_collisions,
clippy::missing_errors_doc,
clippy::missing_panics_doc
)]
#![feature(impl_trait_in_assoc_type)]
use mon::{
Parser,
input::{Input, InputIter},
};
pub trait Parseable<'a, I: Input + 'a> {
type Parser: Parser<I, Output = Self>;
fn parser() -> Self::Parser;
fn parse(input: I) -> Result<Self, I>
where
Self: Sized,
{
Self::parser()
.parse_finished(InputIter::new(input))
.map_err(|e| e.rest())
}
}
/// Strongly typed atom and cpv representations.
///
/// Create atoms from parsers:
/// ```
/// use gentoo_utils::{Parseable, atom::Atom};
///
/// let emacs = Atom::parse("=app-editors/emacs-31.0-r1")
/// .expect("failed to parse atom");
///
/// assert_eq!(emacs.to_string(), "=app-editors/emacs-31.0-r1");
/// ````
///
/// Compare versions:
/// ```
/// use gentoo_utils::{Parseable, atom::Cpv};
///
/// let a = Cpv::parse("foo/bar-1.0").unwrap();
/// let b = Cpv::parse("foo/bar-2.0").unwrap();
///
/// assert!(a < b);
/// ```
pub mod atom;
/// Access to repos and ebuilds.
///
/// ```
/// use gentoo_utils::repo::Repo;
///
/// let repo = Repo::new("/var/db/repos/gentoo");
///
/// for result in repo.categories().expect("failed to read categories") {
/// let category = result.expect("failed to read category");
///
/// for result in category.ebuilds().expect("failed to read ebuilds") {
/// let ebuild = result.expect("failed to read ebuild");
///
/// println!(
/// "{}-{}: {}",
/// ebuild.name(),
/// ebuild.version(),
/// ebuild.description().clone().unwrap_or("no description available".to_string())
/// );
/// }
/// }
///
/// ```
pub mod repo;
pub mod useflag;
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