pbar1/gotemplate-rs

Rust library for rendering Go templates

gotemplate-rs

Rust library for rendering Go templates. Uses FFI to call Go's text/template library directly. Includes Sprig functions in the template scope. Data to inject must be passed as a JSON string.

Mostly an experiment to play around with CGo and Rust. Use at your own risk!

Example

use std::borrow::Borrow;

#[macro_use]
extern crate json_str;
extern crate gotemplate;

fn main() {
    let template_body = "Distance: {{ .query.filtered.filter.geo_distance.distance }}";
    let json_data = json_str!({
        "query": {
            "filtered": {
                "query": {
                    "match_all": {}
                },
                "filter": {
                    "geo_distance": {
                        "distance": "20km",
                        "location": {
                            "lat": 37.776,
                            "lon": -122.41
                        }
                    }
                }
            }
        }
    });

    println!("Rendering a Go template in Rust!\n");
    println!("With template:\n```\n{}\n```\n", template_body);
    println!("With JSON data:\n```\n{}\n```\n", json_data);

    let rendered = gotemplate::render(template_body, json_data.borrow()).unwrap();
    println!("Successful render! Result:\n```\n{}\n```", rendered);
}