Enum Base64DecodeError

pub enum Base64DecodeError {
    InvalidByte(usize, u8),
    InvalidLength(usize),
    InvalidLastSymbol(usize, u8),
    InvalidPadding,
}

Errors that can occur while decoding.

Variants

InvalidByte(usize, u8)

An invalid byte was found in the input. The offset and offending byte are provided.

Padding characters (=) interspersed in the encoded form are invalid, as they may only be present as the last 0-2 bytes of input.

This error may also indicate that extraneous trailing input bytes are present, causing otherwise valid padding to no longer be the last bytes of input.

InvalidLength(usize)

The length of the input, as measured in valid base64 symbols, is invalid. There must be 2-4 symbols in the last input quad.

InvalidLastSymbol(usize, u8)

The last non-padding input symbol’s encoded 6 bits have nonzero bits that will be discarded. This is indicative of corrupted or truncated Base64. Unlike DecodeError::InvalidByte, which reports symbols that aren’t in the alphabet, this error is for symbols that are in the alphabet but represent nonsensical encodings.

InvalidPadding

The nature of the padding was not as configured: absent or incorrect when it must be canonical, or present when it must be absent, etc.

Trait Implementations

impl Clone for DecodeError

fn clone(&self) -> DecodeError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DecodeError

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

Formats the value using the given formatter.

impl Display for DecodeError

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

Formats the value using the given formatter.

impl Error for DecodeError

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.

impl From<DecodeError> for Error

fn from(source: DecodeError) -> Self

Converts to this type from the input type.

impl From<DecodeError> for InvalidHeader

fn from(value: Base64DecodeError) -> Self

Converts to this type from the input type.

impl PartialEq for DecodeError

fn eq(&self, other: &DecodeError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for DecodeError

impl StructuralPartialEq for DecodeError