Fuzzy Matcher

Fuzzy matching algorithm(s) in Rust!

Usage

In your Cargo.toml add the following:

[dependencies]
fuzzy_matcher = "*"

Here are some code example:

use fuzzy_matcher::skim::{fuzzy_match, fuzzy_matcher};

assert_eq!(None, fuzzy_match("abc", "abx"));
assert!(fuzzy_match("axbycz", "abc").is_some());
assert!(fuzzy_match("axbycz", "xyz").is_some());

let (score, indices) = fuzzy_indices("axbycz", "abc").unwrap();
assert_eq!(indices, [0, 2, 4]);

• fuzzy_match only return scores while fuzzy_indices returns the matching indices as well.
• Both function return None if the pattern won't match.
• The score is the higher the better.

More example

echo "axbycz" | cargo run --example fz "abc" and check what happens.

About the Algorithm

Skim

The skim is currently used by skim, a fuzzy finder.

Clangd

• The algorithm is based on clangd's FuzzyMatch.cpp.
• Also checkout https://github.com/lewang/flx/issues/98 for some variants.
• The algorithm is O(mn) where m, n are the length of the pattern and input line.
• Space complexity is O(mn) for fuzzy_indices and O(2n) for fuzzy_match which will compress the table for dynamic programming.