version-number

Parsing the "version core" of semver numbers and their shorthands

Introduction

A crate to parse two- and three component version numbers. The three component version numbers are a subset of semver, namely, just the "version core" of a semver version (that is, pre-release and/or build modifiers are not supported). Two component versions are a shorthand of the three component version number, where the patch number is not specified.

Examples of two- respectively three component version numbers are 1.51 and 1.7.0.

An example where this version type is found, is the package.rust-version field in the Cargo manifest (which crate authors use to set the MSRV).

We call a two component major.minor version number, such as 1.51, a Base Version, and a three component major.minor.patch version number, such as 1.7.0, a Full Version.

Add as a dependency

To add version-number as a dependency to your Rust project, you may run cargo add version-number.

Alternatively, you could add the version-number crate manually to your Cargo manifest (i.e. Cargo.toml) as a dependency:

[dependencies]
version-number = "0.3"

Usage

use version_number::{BaseVersion, FullVersion, Version};

fn main() {
    let base = Version::parse("1.27").unwrap();
    assert_eq!(base, Version::Base(BaseVersion::new(1, 27)));

    let full = Version::parse("1.27.0").unwrap();
    assert_eq!(full, Version::Full(FullVersion::new(1, 27, 0)));
}

If you only want to parse a two or three component version (and reject the other one), you may instead do:

use version_number::{BaseVersion, FullVersion};

fn main() {
    let base = BaseVersion::parse("1.27").unwrap();
    assert_eq!(base, BaseVersion::new(1, 27));

    let full = FullVersion::parse("1.27.0").unwrap();
    assert_eq!(full, FullVersion::new(1, 27, 0));
}

Please refer to the docs to review all functionality.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.