pub fn transcode_to_utf8_strict(bytes: &[u8]) -> Result<Cow<'_, [u8]>>Expand description
Like transcode_to_utf8 but also verifies that the inner XML
declaration’s encoding="X" attribute agrees with the encoding detected
from the byte stream. Catches malformed documents like a UTF-8 BOM
paired with encoding="ISO-8859-1" or a UTF-16 BOM paired with
encoding="UTF-8".
Use this when consuming untrusted XML from external sources. Synthetic
re-encoded fixtures (e.g. a UTF-8 doc re-encoded to UTF-16 keeping its
encoding="UTF-8" declaration) will fail this check — use the lenient
transcode_to_utf8 for those.