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102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
/**************************************************************************/
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/* fuzzy_search.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef FUZZY_SEARCH_H
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#define FUZZY_SEARCH_H
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#include "core/variant/variant.h"
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class FuzzyTokenMatch;
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struct FuzzySearchToken {
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int idx = -1;
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String string;
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bool try_exact_match(FuzzyTokenMatch &p_match, const String &p_target, int p_offset) const;
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bool try_fuzzy_match(FuzzyTokenMatch &p_match, const String &p_target, int p_offset, int p_miss_budget) const;
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};
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class FuzzyTokenMatch {
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friend struct FuzzySearchToken;
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friend class FuzzySearchResult;
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friend class FuzzySearch;
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int matched_length = 0;
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int token_length = 0;
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int token_idx = -1;
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Vector2i interval = Vector2i(-1, -1); // x and y are both inclusive indices.
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void add_substring(int p_substring_start, int p_substring_length);
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bool intersects(const Vector2i &p_other_interval) const;
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bool is_case_insensitive(const String &p_original, const String &p_adjusted) const;
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int get_miss_count() const { return token_length - matched_length; }
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public:
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int score = 0;
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Vector<Vector2i> substrings; // x is start index, y is length.
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};
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class FuzzySearchResult {
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friend class FuzzySearch;
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int miss_budget = 0;
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Vector2i match_interval = Vector2i(-1, -1);
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bool can_add_token_match(const FuzzyTokenMatch &p_match) const;
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void score_token_match(FuzzyTokenMatch &p_match, bool p_case_insensitive) const;
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void add_token_match(const FuzzyTokenMatch &p_match);
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void maybe_apply_score_bonus();
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public:
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String target;
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int score = 0;
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int dir_index = -1;
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Vector<FuzzyTokenMatch> token_matches;
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};
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class FuzzySearch {
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Vector<FuzzySearchToken> tokens;
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void sort_and_filter(Vector<FuzzySearchResult> &p_results) const;
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public:
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int start_offset = 0;
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bool case_sensitive = false;
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int max_results = 100;
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int max_misses = 2;
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bool allow_subsequences = true;
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void set_query(const String &p_query);
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bool search(const String &p_target, FuzzySearchResult &p_result) const;
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void search_all(const PackedStringArray &p_targets, Vector<FuzzySearchResult> &p_results) const;
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};
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#endif // FUZZY_SEARCH_H
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