Module feature_check::version

Parse version strings and compare them.

The Version struct may be used to break a version string down into its separate components and then compare it to another one, e.g. to decide whether a certain feature is really supported.

use std::cmp;

use feature_check::version as fversion;

let v1: fversion::Version = "2.1".parse()?;
let v2: fversion::Version = "2.2.b2".parse()?;
println!("{} {:?} {}", v1, v1.cmp(&v2), v2);
println!("equal? {}", v1 == v2);
println!("smaller: {}", cmp::min(&v1, &v2));
println!("larger: {}", cmp::max(&v1, &v2));
println!("v1: {}", v1);
for comp in v1.iter() {
    println!(
        "- {}/{}",
        match comp.num {
            Some(value) => value.to_string(),
            None => "(none)".to_string(),
        },
        comp.rest,
    );
}
println!("v2: {}", v2);
for comp in v2.into_iter() {
    println!(
        "- {}/{}",
        match comp.num {
            Some(value) => value.to_string(),
            None => "(none)".to_string(),
        },
        comp.rest,
    );
}

Structs

Version

A version string, both in full and broken down into components.

VersionComponent

A single version component, e.g. “3” or “b2”.

Enums

ParseError

An error that occurred while parsing a version string.