yaml-rust2 is a fully compliant YAML 1.2 implementation written in pure Rust.
This work is based on yaml-rust with
fixes towards being compliant to the YAML test
suite. yaml-rust's parser is
heavily influenced by libyaml and yaml-cpp.
yaml-rust2 is a pure Rust YAML 1.2 implementation that benefits from the
memory safety and other benefits from the Rust language.
Add the following to the Cargo.toml of your project:
[dependencies]
yaml-rust2 = "0.8"Use yaml_rust2::YamlLoader to load YAML documents and access them as Yaml objects:
use yaml_rust2::{YamlLoader, YamlEmitter};
fn main() {
let s =
"
foo:
- list1
- list2
bar:
- 1
- 2.0
";
let docs = YamlLoader::load_from_str(s).unwrap();
// Multi document support, doc is a yaml::Yaml
let doc = &docs[0];
// Debug support
println!("{:?}", doc);
// Index access for map & array
assert_eq!(doc["foo"][0].as_str().unwrap(), "list1");
assert_eq!(doc["bar"][1].as_f64().unwrap(), 2.0);
// Array/map-like accesses are checked and won't panic.
// They will return `BadValue` if the access is invalid.
assert!(doc["INVALID_KEY"][100].is_badvalue());
// Dump the YAML object
let mut out_str = String::new();
{
let mut emitter = YamlEmitter::new(&mut out_str);
emitter.dump(doc).unwrap(); // dump the YAML object to a String
}
println!("{}", out_str);
}Note that yaml_rust2::Yaml implements Index<&'a str> and Index<usize>:
Index<usize>assumes the container is an arrayIndex<&'a str>assumes the container is a string to value map- otherwise,
Yaml::BadValueis returned
If your document does not conform to this convention (e.g. map with complex
type key), you can use the Yaml::as_XXX family API of functions to access
your objects.
- Pure Rust
Vec/HashMapaccess API- Low-level YAML events emission
This library does not try to interpret any type specifiers in a YAML document, so there is no risk of, say, instantiating a socket with fields and communicating with the outside world just by parsing a YAML document.
This implementation is fully compatible with the YAML 1.2 specification. In
order to help with compliance, yaml-rust2 tests against (and passes) the YAML
test suite.
You can use yaml-rust2 as a drop-in replacement for the original yaml-rust crate.
[dependencies]
yaml-rust = { version = "#.#", package = "yaml-rust2" }This Cargo.toml declaration allows you to refer to this crate as yaml_rust in your code.
use yaml_rust::{YamlLoader, YamlEmitter};Licensed under either of
- Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (http://opensource.org/licenses/MIT)
at your option.
Since this repository was originally maintained by chyh1990, there are 2 sets of licenses. A license of each set must be included in redistributions. See the LICENSE file for more details.
You can find licences in the .licenses subfolder.
Fork this repository and
Create a Pull Request on Github.
You may need to click on "compare across forks" and select your fork's branch.
Make sure that Ethiraric is selected as the base repository, not chyh1990.
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.