searchengines-web/MeiliSearch
searchengines-web/MeiliSearch
1
0
Fork 0
mirror of https://github.com/meilisearch/MeiliSearch synced 2024-12-22 20:50:04 +01:00
Code Issues Releases Wiki Activity

Highlight partially cropped matches too

Browse Source
This commit is contained in:
F. Levi 2024-10-19 13:42:02 +03:00
parent 6c226a4580
commit e51e6f902a
3 changed files with 67 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
milli/src/search/new/matches/match.rs
View File

@ -18,7 +18,7 @@ pub enum MatchPosition {
#[derive(Clone, Debug)]
pub struct Match {
pub match_len: usize,
pub char_count: usize,
// ids of the query words that matches.
pub ids: Vec<WordId>,
pub position: MatchPosition,

25
milli/src/search/new/matches/matching_words.rs
View File

@ -86,14 +86,17 @@ impl MatchingWords {
continue;
};
let prefix_length = char_index + c.len_utf8();
let char_len = token.original_lengths(prefix_length).0;
let (char_count, byte_len) = token.original_lengths(prefix_length);
let ids = &located_words.positions;
return Some(MatchType::Full { char_len, ids });
return Some(MatchType::Full { ids, char_count, byte_len });
// else we exact match the token.
} else if token.lemma() == word {
let char_len = token.char_end - token.char_start;
let ids = &located_words.positions;
return Some(MatchType::Full { char_len, ids });
return Some(MatchType::Full {
char_count: token.char_end - token.char_start,
byte_len: token.byte_end - token.byte_start,
ids,
});
}
}
}
@ -149,7 +152,7 @@ pub type WordId = u16;
/// In these cases we need to match consecutively several tokens to consider that the match is full.
#[derive(Debug, PartialEq)]
pub enum MatchType<'a> {
Full { char_len: usize, ids: &'a RangeInclusive<WordId> },
Full { char_count: usize, byte_len: usize, ids: &'a RangeInclusive<WordId> },
Partial(PartialMatch<'a>),
}
@ -183,7 +186,11 @@ impl<'a> PartialMatch<'a> {
// if there is no remaining word to match in the phrase and the current token is matching,
// return a Full match.
} else if is_matching {
Some(MatchType::Full { char_len: token.char_end - token.char_start, ids })
Some(MatchType::Full {
char_count: token.char_end - token.char_start,
byte_len: token.byte_end - token.byte_start,
ids,
})
// if the current token doesn't match, return None to break the match sequence.
} else {
None
@ -270,7 +277,7 @@ pub(crate) mod tests {
..Default::default()
})
.next(),
Some(MatchType::Full { char_len: 5, ids: &(0..=0) })
Some(MatchType::Full { char_count: 5, byte_len: 5, ids: &(0..=0) })
);
assert_eq!(
matching_words
@ -294,7 +301,7 @@ pub(crate) mod tests {
..Default::default()
})
.next(),
Some(MatchType::Full { char_len: 5, ids: &(2..=2) })
Some(MatchType::Full { char_count: 5, byte_len: 5, ids: &(2..=2) })
);
assert_eq!(
matching_words
@ -306,7 +313,7 @@ pub(crate) mod tests {
..Default::default()
})
.next(),
Some(MatchType::Full { char_len: 5, ids: &(2..=2) })
Some(MatchType::Full { char_count: 5, byte_len: 5, ids: &(2..=2) })
);
assert_eq!(
matching_words

94
milli/src/search/new/matches/mod.rs
View File

@ -10,7 +10,10 @@ use matching_words::{MatchType, PartialMatch};
use r#match::{Match, MatchPosition};
use serde::Serialize;
use simple_token_kind::SimpleTokenKind;
use std::borrow::Cow;
use std::{
borrow::Cow,
cmp::{max, min},
};
const DEFAULT_CROP_MARKER: &str = "…";
const DEFAULT_HIGHLIGHT_PREFIX: &str = "<em>";
@ -139,7 +142,7 @@ impl<'t, 'tokenizer> Matcher<'t, 'tokenizer, '_, '_> {
Some(MatchType::Full { ids, .. }) => {
// save the token that closes the partial match as a match.
matches.push(Match {
match_len: word.char_end - *first_word_char_start,
char_count: word.char_end - *first_word_char_start,
ids: ids.clone().collect(),
position: MatchPosition::Phrase {
word_positions: [first_word_position, word_position],
@ -182,10 +185,10 @@ impl<'t, 'tokenizer> Matcher<'t, 'tokenizer, '_, '_> {
match match_type {
// we match, we save the current token as a match,
// then we continue the rest of the tokens.
MatchType::Full { char_len, ids } => {
MatchType::Full { ids, char_count, .. } => {
let ids: Vec<_> = ids.clone().collect();
matches.push(Match {
match_len: char_len,
char_count,
ids,
position: MatchPosition::Word { word_position, token_position },
});
@ -224,19 +227,15 @@ impl<'t, 'tokenizer> Matcher<'t, 'tokenizer, '_, '_> {
.iter()
.map(|m| MatchBounds {
start: tokens[m.get_first_token_pos()].byte_start,
length: m.match_len,
// TODO: Why is this in chars, while start is in bytes?
length: m.char_count,
})
.collect(),
}
}
/// Returns the bounds in byte index of the crop window.
fn crop_bounds(
&self,
tokens: &[Token<'_>],
matches: &[Match],
crop_size: usize,
) -> (usize, usize) {
fn crop_bounds(&self, tokens: &[Token<'_>], matches: &[Match], crop_size: usize) -> [usize; 2] {
let (
mut remaining_words,
is_iterating_forward,
@ -371,7 +370,7 @@ impl<'t, 'tokenizer> Matcher<'t, 'tokenizer, '_, '_> {
let crop_byte_start = before_tokens.next().map_or(0, |t| t.byte_end);
let crop_byte_end = after_tokens.next().map_or(self.text.len(), |t| t.byte_start);
(crop_byte_start, crop_byte_end)
[crop_byte_start, crop_byte_end]
}
// Returns the formatted version of the original text.
@ -382,78 +381,87 @@ impl<'t, 'tokenizer> Matcher<'t, 'tokenizer, '_, '_> {
} else {
match &self.matches {
Some((tokens, matches)) => {
// If the text has to be cropped,
// crop around the best interval.
let (byte_start, byte_end) = match format_options.crop {
// If the text has to be cropped, crop around the best interval.
let [crop_byte_start, crop_byte_end] = match format_options.crop {
Some(crop_size) if crop_size > 0 => {
self.crop_bounds(tokens, matches, crop_size)
}
_ => (0, self.text.len()),
_ => [0, self.text.len()],
};
let mut formatted = Vec::new();
// push crop marker if it's not the start of the text.
if byte_start > 0 && !self.crop_marker.is_empty() {
if crop_byte_start > 0 && !self.crop_marker.is_empty() {
formatted.push(self.crop_marker);
}
let mut byte_index = byte_start;
let mut byte_index = crop_byte_start;
if format_options.highlight {
// insert highlight markers around matches.
for m in matches {
let (current_byte_start, current_byte_end) = match m.position {
let [m_byte_start, m_byte_end] = match m.position {
MatchPosition::Word { token_position, .. } => {
let token = &tokens[token_position];
(&token.byte_start, &token.byte_end)
[&token.byte_start, &token.byte_end]
}
MatchPosition::Phrase { token_positions: [ftp, ltp], .. } => {
(&tokens[ftp].byte_start, &tokens[ltp].byte_end)
[&tokens[ftp].byte_start, &tokens[ltp].byte_end]
}
};
// skip matches out of the crop window.
if *current_byte_start < byte_start || *current_byte_end > byte_end {
// skip matches out of the crop window
if *m_byte_end < crop_byte_start || *m_byte_start > crop_byte_end {
continue;
}
if byte_index < *current_byte_start {
formatted.push(&self.text[byte_index..*current_byte_start]);
// adjust start and end to the crop window size
let [m_byte_start, m_byte_end] = [
max(m_byte_start, &crop_byte_start),
min(m_byte_end, &crop_byte_end),
];
// push text that is positioned before our matches
if byte_index < *m_byte_start {
formatted.push(&self.text[byte_index..*m_byte_start]);
}
let highlight_byte_index = self.text[*current_byte_start..]
.char_indices()
.enumerate()
.find(|(i, _)| *i == m.match_len)
.map_or(*current_byte_end, |(_, (i, _))| i + *current_byte_start);
formatted.push(self.highlight_prefix);
formatted.push(&self.text[*current_byte_start..highlight_byte_index]);
// TODO: This is additional work done, charabia::token::Token byte_len
// should already get us the original byte length, however, that doesn't work as
// it's supposed to, investigate why
let highlight_byte_index = self.text[*m_byte_start..]
.char_indices()
.nth(m.char_count)
.map_or(*m_byte_end, |(i, _)| min(i + *m_byte_start, *m_byte_end));
formatted.push(&self.text[*m_byte_start..highlight_byte_index]);
formatted.push(self.highlight_suffix);
// if it's a prefix highlight, we put the end of the word after the highlight marker.
if highlight_byte_index < *current_byte_end {
formatted.push(&self.text[highlight_byte_index..*current_byte_end]);
if highlight_byte_index < *m_byte_end {
formatted.push(&self.text[highlight_byte_index..*m_byte_end]);
}
byte_index = *current_byte_end;
byte_index = *m_byte_end;
}
}
// push the rest of the text between last match and the end of crop.
if byte_index < byte_end {
formatted.push(&self.text[byte_index..byte_end]);
if byte_index < crop_byte_end {
formatted.push(&self.text[byte_index..crop_byte_end]);
}
// push crop marker if it's not the end of the text.
if byte_end < self.text.len() && !self.crop_marker.is_empty() {
if crop_byte_end < self.text.len() && !self.crop_marker.is_empty() {
formatted.push(self.crop_marker);
}
if formatted.len() == 1 {
// avoid concatenating if there is already 1 slice.
Cow::Borrowed(&self.text[byte_start..byte_end])
Cow::Borrowed(&self.text[crop_byte_start..crop_byte_end])
} else {
Cow::Owned(formatted.concat())
}
@ -825,8 +833,7 @@ mod tests {
let mut matcher = builder.build(text, None);
insta::assert_snapshot!(
matcher.format(format_options),
// @TODO: Should probably highlight it all, even if it didn't fit the whole phrase
@"The groundbreaking invention had the power to split the world…"
@"<em>The groundbreaking invention had the power to split the world</em>…"
);
let builder = MatcherBuilder::new_test(
@ -837,7 +844,7 @@ mod tests {
let mut matcher = builder.build(text, None);
insta::assert_snapshot!(
matcher.format(format_options),
// @TODO: Should probably include end of string in this case?
// TODO: Should include exclamation mark without crop markers
@"…between those who <em>embraced progress and those who resisted change</em>…"
);
@ -860,8 +867,7 @@ mod tests {
let mut matcher = builder.build(text, None);
insta::assert_snapshot!(
matcher.format(format_options),
// @TODO: "invention" should be highlighted as well
@"…invention <em>had the power to split the world between those</em>…"
@"…<em>invention</em> <em>had the power to split the world between those</em>…"
);
}