74 lines
2.3 KiB
Rust
74 lines
2.3 KiB
Rust
use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
|
|
use fuzzy_matcher::FuzzyMatcher;
|
|
|
|
#[cfg(test)]
|
|
mod test;
|
|
|
|
pub struct FuzzyQuery {
|
|
queries: Vec<String>,
|
|
}
|
|
|
|
impl FuzzyQuery {
|
|
pub fn new(query: &str) -> FuzzyQuery {
|
|
let mut saw_backslash = false;
|
|
let queries = query
|
|
.split(|c| {
|
|
saw_backslash = match c {
|
|
' ' if !saw_backslash => return true,
|
|
'\\' => true,
|
|
_ => false,
|
|
};
|
|
false
|
|
})
|
|
.filter_map(|query| {
|
|
if query.is_empty() {
|
|
None
|
|
} else {
|
|
Some(query.replace("\\ ", " "))
|
|
}
|
|
})
|
|
.collect();
|
|
FuzzyQuery { queries }
|
|
}
|
|
|
|
pub fn fuzzy_match(&self, item: &str, matcher: &Matcher) -> Option<i64> {
|
|
// use the rank of the first query for the rank, because merging ranks is not really possible
|
|
// this behaviour matches fzf and skim
|
|
let score = matcher.fuzzy_match(item, self.queries.get(0)?)?;
|
|
if self
|
|
.queries
|
|
.iter()
|
|
.any(|query| matcher.fuzzy_match(item, query).is_none())
|
|
{
|
|
return None;
|
|
}
|
|
Some(score)
|
|
}
|
|
|
|
pub fn fuzzy_indicies(&self, item: &str, matcher: &Matcher) -> Option<(i64, Vec<usize>)> {
|
|
if self.queries.len() == 1 {
|
|
return matcher.fuzzy_indices(item, &self.queries[0]);
|
|
}
|
|
|
|
// use the rank of the first query for the rank, because merging ranks is not really possible
|
|
// this behaviour matches fzf and skim
|
|
let (score, mut indicies) = matcher.fuzzy_indices(item, self.queries.get(0)?)?;
|
|
|
|
// fast path for the common case of not using a space
|
|
// during matching this branch should be free thanks to branch prediction
|
|
if self.queries.len() == 1 {
|
|
return Some((score, indicies));
|
|
}
|
|
|
|
for query in &self.queries[1..] {
|
|
let (_, matched_indicies) = matcher.fuzzy_indices(item, query)?;
|
|
indicies.extend_from_slice(&matched_indicies);
|
|
}
|
|
|
|
// deadup and remove duplicate matches
|
|
indicies.sort_unstable();
|
|
indicies.dedup();
|
|
|
|
Some((score, indicies))
|
|
}
|
|
}
|