utf8_iter

utf8_iter provides iteration by char over potentially-invalid UTF-8 &[u8] such that UTF-8 errors are handled according to the WHATWG Encoding Standard.

Iteration by Result<char,Utf8CharsError> is provided as an alternative that distinguishes UTF-8 errors from U+FFFD appearing in the input.

An implementation of char_indices() analogous to the same-name method on str is also provided.

Key parts of the code are copypaste from the UTF-8 to UTF-16 conversion code in encoding_rs, which was optimized for speed in the case of valid input. The implementation here uses the structure that was found to be fast in the encoding_rs context but the structure hasn't been benchmarked in this context.

This is a no_std crate.

Licensing

TL;DR: Apache-2.0 OR MIT

Please see the file named COPYRIGHT.

Documentation

Generated API documentation is available online.

Release Notes

1.0.4

• Add iteration by Result<char,Utf8CharsError>.

1.0.3

• Fix an error in documentation.

1.0.2

• char_indices() implementation.

1.0.1

• as_slice() method.
• Implement DoubleEndedIterator

1.0.0

The initial release.