utf8-fix

= utf8-fix

Rust library for fixing invalid UTF-8 sequences in-place.

== Overview

This library processes byte slices containing potentially invalid UTF-8 data and fixes common encoding errors:

• Overlong encodings
• UTF-16 surrogates
• Out-of-range codepoints

Valid UTF-8 sequences are preserved unchanged. The buffer size remains the same - invalid codepoints are replaced with valid ones of the same byte length.

== Use Cases

This library is particularly useful for:

• Fuzzing and mutation testing: Generate valid UTF-8 test inputs from arbitrary byte sequences while preserving the original buffer size.
• Data sanitization: Clean up corrupted UTF-8 data without changing the data length.

== Usage

[source,rust]

use utf8_fix::fix_utf8_string; use rand::thread_rng;

let mut data = b"Hello, world!".to_vec(); let mut rng = thread_rng();

fix_utf8_string(&mut data, &mut rng);

== Features

This library is no_std by default.

• std: Enables standard library support including Display and Error trait implementations.

To use with std:

[source,toml]

[dependencies] utf8-fix = { version = "0.1.1", features = ["std"] }