geo-uri-rs

A Rust crate for uniform resource identifiers for geographic locations (geo URIs) according to IEEE RFC 5870. This crate supports parsing and generating geo URIs in the correct format. Its parser is currently somewhat more liberal than the proposed standard.

It supports geolocations specified by latitude and longitude, but also optionally altitude and an uncertainty radius. The currently only supported coordinate reference system is WGS-84.

Usage

Just run the following to add this library to your project:

$ cargo add geo-uri
    Updating crates.io index
      Adding geo-uri vX.Y.Z to dependencies.

Parsing

Use either the TryFrom trait or the parse method on strings to parse a geo URI string into a [GeoUri] struct:

use geo_uri::GeoUri;

let geo_uri = GeoUri::try_from("geo:52.107,5.134,3.6;u=1000").expect("valid geo URI");
assert_eq!(geo_uri.latitude(), 52.107);
assert_eq!(geo_uri.longitude(), 5.134);
assert_eq!(geo_uri.altitude(), Some(3.6));
assert_eq!(geo_uri.uncertainty(), Some(1000.0));

let geo_uri: GeoUri = "geo:52.107,5.134;u=2000.0".parse().expect("valid geo URI");
assert_eq!(geo_uri.latitude(), 52.107);
assert_eq!(geo_uri.longitude(), 5.134);
assert_eq!(geo_uri.altitude(), None);
assert_eq!(geo_uri.uncertainty(), Some(2000.0));

It is also possible to call the parse function directly:

use geo_uri::GeoUri;

let geo_uri = GeoUri::parse("geo:52.107,5.134,3.6").expect("valid geo URI");
assert_eq!(geo_uri.latitude(), 52.107);
assert_eq!(geo_uri.longitude(), 5.134);
assert_eq!(geo_uri.altitude(), Some(3.6));
assert_eq!(geo_uri.uncertainty(), None);

Generating

Use the [GeoUriBuilder] to construct a [GeoUri] struct. Then, use either the ToString or Display trait to generate a geo URI string:

use geo_uri::GeoUri;

let geo_uri = GeoUri::builder()
    .latitude(52.107)
    .longitude(5.134)
    .uncertainty(1_000.0)
    .build()
    .unwrap();

assert_eq!(
    geo_uri.to_string(),
    String::from("geo:52.107,5.134;u=1000")
);
assert_eq!(
    format!("{geo_uri}"),
    String::from("geo:52.107,5.134;u=1000")
);

It is also possible to construct a [GeoUri] struct from coordinate tuples using the TryFrom trait:

use geo_uri::GeoUri;

let geo_uri = GeoUri::try_from((52.107, 5.134)).expect("valid coordinates");
let geo_uri = GeoUri::try_from((52.107, 5.134, 3.6)).expect("valid coordinates");

License

geo-uri-rs is licensed under the MIT license (see the LICENSE file or http://opensource.org/licenses/MIT).