A string interpolation utility to replace Mustache like placeholders with stored variables.

• Works as an extremely lightweight template library
• Does not require template compilation
• Simply replaces {{ key }} with value
• Whitespace surrounding the key is ignored: {{key}} and {{ key }} are equal.

Interact with this utility via VarjMap.

Basic usage:

let mut map = varj::VarjMap::new();
map.insert("key", "value");

let expected = "value";
let actual = map.render("{{ key }}")?;

assert_eq!(expected, actual);

With a json string:

let mut variables = varj::VarjMap::new();
variables.insert("name", "Christopher");
variables.insert("age", "30");

let json = r#"{
"name" = "{{ name }}",
"age" = {{ age }}
}"#;

let expected = r#"{
"name" = "Christopher",
"age" = 30
}"#;

let actual = variables.render(json)?;

assert_eq!(expected, actual);

VarjMap implements From<HashMap> and can be converted back to one when needed. This is useful if you want to build a VarjMap from an iterator, or iterate over one. See example.

The minimum supported Rust version is currently 1.56.1.

varj supports the latest 8 stable releases of Rust - approximately 1 year. Increasing MSRV is not considered a semver-breaking change.

Thank you very much for considering to contribute to this project!

We welcome any form of contribution:

• New issues (feature requests, bug reports, questions, ideas, ...)
• Pull requests (documentation improvements, code improvements, new features, ...)

Note: Before you take the time to open a pull request, please open an issue first.

See CONTRIBUTING.md for details.

varj is distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.