This crate implements the Concise Binary Object Representation from RFC 7049. It builds on Serde, the generic serialization framework for Rust. CBOR provides a binary encoding for a superset of the JSON data model that is small and very fast to parse.
Serde CBOR supports Rust 1.40 and up. Add this to your Cargo.toml
:
[dependencies] serde_cbor = "0.11.1"
Storing and loading Rust types is easy and requires only minimal modifications to the program code.
use serde_derive::{Deserialize, Serialize}; use std::error::Error; use std::fs::File; // Types annotated with `Serialize` can be stored as CBOR. // To be able to load them again add `Deserialize`. #[derive(Debug, Serialize, Deserialize)] struct Mascot { name: String, species: String, year_of_birth: u32, } fn main() -> Result<(), Box<dyn Error>> { let ferris = Mascot { name: "Ferris".to_owned(), species: "crab".to_owned(), year_of_birth: 2015, }; let ferris_file = File::create("examples/ferris.cbor")?; // Write Ferris to the given file. // Instead of a file you can use any type that implements `io::Write` // like a HTTP body, database connection etc. serde_cbor::to_writer(ferris_file, &ferris)?; let tux_file = File::open("examples/tux.cbor")?; // Load Tux from a file. // Serde CBOR performs roundtrip serialization meaning that // the data will not change in any way. let tux: Mascot = serde_cbor::from_reader(tux_file)?; println!("{:?}", tux); // prints: Mascot { name: "Tux", species: "penguin", year_of_birth: 1996 } Ok(()) }
There are a lot of options available to customize the format. To operate on untyped CBOR values have a look at the Value
type.
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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.