8a53986961
* adds extract_* functions to CBOR library * hides Value implementation details * CBOR API fixes * README adapted to API changes
CBOR Parsing Library
This crate implements Concise Binary Object Representation (CBOR) from RFC 8949.
Usage
fn main() {
// Build a CBOR object with the crate's convenience macros. Note that this
// object is not built in canonical order.
let map_object = cbor_map! {
1 => cbor_array![2, 3],
"tstr" => cbor_bytes!(vec![1, 2, 3]),
-2 => cbor_null!(),
3 => cbor_true!(),
};
println!("Object {:?}", map_object);
// Serialize to bytes.
let mut map_data = vec![];
sk_cbor::writer::write(map_object, &mut map_data).unwrap();
let hex_map_data = hex::encode(&map_data);
// Serialized version is in canonical order.
println!("Serializes to {}", hex_map_data);
assert_eq!(
hex_map_data,
concat!(
"a4", // 4-map
"01", // int(1) =>
"820203", // 2-array [2, 3],
"03", // int(3) =>
"f5", // true,
"21", // nint(-2) =>
"f6", // null,
"6474737472", // 4-tstr "tstr" =>
"43010203" // 3-bstr
)
);
// Convert back to an object. This is different than the original object,
// because the map is now in canonical order.
let recovered_object = sk_cbor::reader::read(&map_data).unwrap();
println!("Deserializes to {:?}", recovered_object);
}