Function coap_numbers::content_format::from_str

pub const fn from_str(content_format: &str) -> Option<u16>

Match a content format string representation against the list of known content formats.

The string content_format needs to match the value from the IANA registry verbatim; any content codeing needs to be suffixed after an “@” character as described in RFC9193 for the SenML Content-Format field. For the identity coding, that suffix must be omitted.

This function is not intended for embedded use, but as a tool for authors who can write

let cf = content_format::from_str("application/cbor").unwrap();

and thus don’t need to copy around magic numbers.