olpc-cjson provides a [serde_json::Formatter] to serialize data as [canonical JSON], as defined by OLPC and used in [TUF]. It is developed as part of [tough], a Rust library for using TUF repositories.

OLPC's canonical JSON specification is subtly different from other "canonical JSON" specifications, and is also not a strict subset of JSON (specifically, ASCII control characters 0x00–0x1f are printed literally, which is not valid JSON). Therefore, serde_json cannot necessarily deserialize JSON produced by this formatter.

This crate is not developed or endorsed by OLPC; use of the term is solely to distinguish this specification of canonical JSON from other specifications of canonical JSON.

```rust use olpccjson::CanonicalFormatter; use serde::Serialize; use serdejson::json;

let value = json!({"b": 12, "a": "qwerty"}); let mut buf = Vec::new(); let mut ser = serdejson::Serializer::withformatter(&mut buf, CanonicalFormatter::new()); value.serialize(&mut ser).unwrap(); assert_eq!(buf, br#"{"a":"qwerty","b":12}"#); ```