pub fn field_line(buf: &[u8]) -> (usize, usize, usize)Expand description
Offsets of one header field line at the start of buf, found in a single dispatch:
(name_end, value_start, value_end). name_end is the length of the TCHAR run. If the
byte there is :, value_start is past the colon and any SP/HTAB, and value_end ends the
FIELD_VALUE run from there (trailing whitespace included); otherwise both equal
name_end. The caller checks the bytes at name_end and value_end.