Enum Error 

pub enum Error {
    NotVtt,
    NotFound,
    MultipleManifests,
    EmptyReference,
    MalformedReference(String),
    ExclusionOutOfRange,
}

Errors returned when embedding, extracting, or hard-binding a manifest.

Variants

NotVtt

The input does not begin with the WEBVTT signature line.

NotFound

No manifest NOTE block was found in the file.

MultipleManifests

More than one manifest NOTE block was found. Per the C2PA structured text embedding rules there shall be at most one; the file is rejected.

EmptyReference

A manifest NOTE block was found but the reference between the delimiters is empty.

MalformedReference(String)

The manifest reference could not be parsed (e.g. a malformed data:application/c2pa;base64,... URI).

ExclusionOutOfRange

The hard-binding exclusion range extends beyond the end of the asset.

Implementations

impl Error

pub fn code(&self) -> Option<&'static str>

The registered C2PA validation status code for this error, or None when the condition carries no status code.

WebVTT is carried by the structured-text method, for which the specification defines no format-specific codes — unlike HTML or unstructured text. Only the data-hash condition maps to a code.

Every crate in this family exposes this method, so a dispatcher handling several embedding methods can ask the same question of any of them.

pub fn is_no_manifest_located(&self) -> bool

Whether this error means the asset carries no provenance at all, as opposed to provenance that was found and rejected.

Error::MultipleManifests counts: the structured-text rules require an asset with more than one manifest block to be treated as if no manifests were located.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.