Struct MalformedError

pub struct MalformedError(/* private fields */);

The error type reported by DecodingReader and EncodingWriter when they encounter a malformed byte sequence.

DecodingReader reports this error when its decoder encounters a malformed byte sequence. EncodingWriter reports this error when an invalid UTF-8 sequence is supplied as input.

The Read and Write implementations of DecodingReader and EncodingWriter, respectively, report this error in the form of std::io::Error wrapping an instance of this type. Callers need to unwrap and downcast the inner error of a reported error, which can be shortcut by wrapped_in.

Examples

use encoding_rs::SHIFT_JIS;
use encoding_rs_rw::{DecodingReader, MalformedError};
use std::io::Read as _;

let src: &[u8] = &[227, 89, 151, 0xff, 144, 175];
let mut reader = DecodingReader::new(src, SHIFT_JIS.new_decoder());

let mut dst = String::new();
while let Err(io_error) = reader.read_to_string(&mut dst) {
    if MalformedError::wrapped_in(&io_error).is_some() {
        // insert replacement character (U+FFFD) and continue
        dst.push('�');
    } else {
        panic!("found other error than MalformedError: {}", io_error);
    }
}

assert_eq!(dst, "綺�星");

Implementations

impl MalformedError

pub fn wrapped_in(io_error: &Error) -> Option<&Self>

Returns a reference to the MalformedError value wrapped by a std::io::Error if it contains an inner error whose type is MalformedError, or returns None otherwise.

Trait Implementations

impl Clone for MalformedError

fn clone(&self) -> MalformedError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MalformedError

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

Formats the value using the given formatter.

impl Display for MalformedError

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

Formats the value using the given formatter.

impl Error for MalformedError

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.