Function import_from_reader 

pub fn import_from_reader<R: Read, W: Write>(
    input_format: &str,
    reader: R,
    writer: &mut W,
) -> Result<()>

Convert a stream of some other format into a stream of CBOR bytes.

Each top-level item in the input is serialized to CBOR and written to writer. The input is never buffered in memory — items are streamed one at a time.

Arguments

• input_format: one of "json", "yaml", "toml", "cbor". A "cbor" input is re-emitted item-for-item (passthrough/normalization).
• reader: the input byte stream. Multiple concatenated top-level items are supported for every format that allows it (all except yaml/toml, which consume the whole stream as one value).
• writer: the CBOR output sink.

Example

use cbor_cli::import::import_from_reader;

let json = br#"{"key": "value"}"#;
let mut cbor = Vec::new();
import_from_reader("json", &json[..], &mut cbor).unwrap();
assert_eq!(cbor[0], 0xa1); // CBOR map header (major type 5, length 1)