pub fn iscc_decode(iscc: &str) -> IsccResult<(u8, u8, u8, u8, Vec<u8>)>Expand description
Decode an ISCC string into its header components and raw digest.
Normalizes the input to its canonical form first (matching
iscc_core.codec.iscc_decode), then base32-decodes it, parses the
variable-length header, and returns the digest.
Normalization means a concatenated sequence of ISCC-UNITs is composed into a single ISCC-CODE before decoding, so a sequence and its composite form decode identically. Trailing bytes after a composite are discarded by decomposition, exactly as in the reference.
Returns (maintype, subtype, version, length_index, digest) where the
integer fields match codec::MainType, codec::SubType, and
codec::Version enum values.
ยงErrors
Returns IsccError::InvalidInput on invalid base32 input, a malformed
header, a body shorter than its encoded bit-length, or a unit sequence that
cannot be composed into an ISCC-CODE.