Function cbor_diag::parse_bytes_partial

pub fn parse_bytes_partial(
    bytes: impl AsRef<[u8]>
) -> Result<Option<(DataItem, usize)>>

Parse a string containing a binary encoded CBOR data item, optionally followed by more data.

Returns one of:

• Err(_) => a parsing error if there was an issue encountered
• Ok(None) => the end of a data item was not reached
• Ok(Some(_)) => the parsed item along with how many bytes were used to parse this item

Examples

use cbor_diag::{DataItem, IntegerWidth, Tag, TextString};

assert_eq!(
    cbor_diag::parse_bytes_partial(&b"\
        \xd8\x20\x73\x68\x74\x74\x70\x73\x3a\x2f\x2f\x65\x78\x61\x6d\x70\
        \x6c\x65\x2e\x63\x6f\
    "[..]).unwrap(),
    None);

assert_eq!(
    cbor_diag::parse_bytes_partial(&b"\
        \xd8\x20\x73\x68\x74\x74\x70\x73\x3a\x2f\x2f\x65\x78\x61\x6d\x70\
        \x6c\x65\x2e\x63\x6f\x6d\xff\
    "[..]).unwrap(),
    Some((
        DataItem::Tag {
            tag: Tag::URI,
            bitwidth: IntegerWidth::Eight,
            value: Box::new(DataItem::TextString(TextString {
                data: "https://example.com".into(),
                bitwidth: IntegerWidth::Zero,
            })),
        },
        22
    )));