CBOR Parsing Library

This crate implements Concise Binary Object Representation (CBOR) from RFC 8949.

Usage

```rust fn main() { // Build a CBOR object with various different types included. Note that this // object is not built in canonical order. let manualobject = Value::Map(vec![ ( Value::Unsigned(1), Value::Array(vec![Value::Unsigned(2), Value::Unsigned(3)]), ), ( Value::TextString("tstr".toowned()), Value::ByteString(vec![1, 2, 3]), ), (Value::Negative(-2), Value::Simple(SimpleValue::NullValue)), (Value::Unsigned(3), Value::Simple(SimpleValue::TrueValue)), ]);

// Build the same object using the crate's convenience macros.
let macro_object = cbor_map! {
    1 => cbor_array![2, 3],
    "tstr" => cbor_bytes!(vec![1, 2, 3]),
    -2 => cbor_null!(),
    3 => cbor_true!(),
};

assert_eq!(manual_object, macro_object);
println!("Object {:?}", manual_object);

// Serialize to bytes.
let mut manual_data = vec![];
sk_cbor::writer::write(manual_object, &mut manual_data);
let hex_manual_data = hexify(&manual_data);

// Serialized version is in canonical order.
println!("Serializes to {}", hex_manual_data);
assert_eq!(
    hex_manual_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(&manual_data).unwrap();
println!("Deserializes to {:?}", recovered_object);

} ```