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-rw-r--r--lib/apps/fuzzy.vala112
1 files changed, 55 insertions, 57 deletions
diff --git a/lib/apps/fuzzy.vala b/lib/apps/fuzzy.vala
index d6dac3d..f93b2eb 100644
--- a/lib/apps/fuzzy.vala
+++ b/lib/apps/fuzzy.vala
@@ -1,75 +1,73 @@
namespace AstalApps {
- private int max(int a, int b) {
- return a > b ? a : b;
- }
+private int max(int a, int b) {
+ return a > b ? a : b;
+}
- public int fuzzy_match_string(string pattern, string str) {
- const int unmatched_letter_penalty = -1;
- int score = 100;
+public int fuzzy_match_string(string pattern, string str) {
+ const int unmatched_letter_penalty = -1;
+ int score = 100;
- if (pattern.length == 0) return score;
- if (str.length < pattern.length) return int.MIN;
+ if (pattern.length == 0) return score;
+ if (str.length < pattern.length) return int.MIN;
- score += unmatched_letter_penalty * (str.length - pattern.length);
- score = fuzzy_match_recurse(pattern, str, score, true);
+ score += unmatched_letter_penalty * (str.length - pattern.length);
+ score = fuzzy_match_recurse(pattern, str, score, true);
- return score;
- }
+ return score;
+}
- private int fuzzy_match_recurse(string pattern, string str, int score, bool first_char) {
- if (pattern.length == 0) return score;
+private int fuzzy_match_recurse(string pattern, string str, int score, bool first_char) {
+ if (pattern.length == 0) return score;
+
+ int match_idx = 0;
+ int offset = 0;
+ unichar search = pattern.casefold().get_char(0);
+ int best_score = int.MIN;
+
+ while ((match_idx = str.casefold().substring(offset).index_of_char(search)) >= 0) {
+ offset += match_idx;
+ int subscore = fuzzy_match_recurse(
+ pattern.substring(1),
+ str.substring(offset + 1),
+ compute_score(offset, first_char, str, offset), false);
+ best_score = max(best_score, subscore);
+ offset++;
+ }
- int match_idx = 0;
- int offset = 0;
- unichar search = pattern.casefold().get_char(0);
- int best_score = int.MIN;
+ if (best_score == int.MIN) return int.MIN;
+ return score + best_score;
+}
- while ((match_idx = str.casefold().substring(offset).index_of_char(search)) >= 0) {
- offset += match_idx;
- int subscore = fuzzy_match_recurse(
- pattern.substring(1),
- str.substring(offset + 1),
- compute_score(offset, first_char, str, offset), false);
- best_score = max(best_score, subscore);
- offset++;
- }
+private int compute_score(int jump, bool first_char, string match, int idx) {
+ const int adjacency_bonus = 15;
+ const int separator_bonus = 30;
+ const int camel_bonus = 30;
+ const int first_letter_bonus = 15;
+ const int leading_letter_penalty = -5;
+ const int max_leading_letter_penalty = -15;
+ int score = 0;
- if (best_score == int.MIN) return int.MIN;
- return score + best_score;
+ if (!first_char && jump == 0) {
+ score += adjacency_bonus;
}
-
- private int compute_score(int jump, bool first_char, string match, int idx) {
- const int adjacency_bonus = 15;
- const int separator_bonus = 30;
- const int camel_bonus = 30;
- const int first_letter_bonus = 15;
- const int leading_letter_penalty = -5;
- const int max_leading_letter_penalty = -15;
-
- int score = 0;
-
- if (!first_char && jump == 0) {
- score += adjacency_bonus;
- }
- if (!first_char || jump > 0) {
- if (match[idx].isupper() && match[idx-1].islower()) {
- score += camel_bonus;
- }
- if (match[idx].isalnum() && !match[idx-1].isalnum()) {
- score += separator_bonus;
- }
- }
- if (first_char && jump == 0) {
- score += first_letter_bonus;
+ if (!first_char || jump > 0) {
+ if (match[idx].isupper() && match[idx-1].islower()) {
+ score += camel_bonus;
}
- if (first_char) {
- score += max(leading_letter_penalty * jump, max_leading_letter_penalty);
+ if (match[idx].isalnum() && !match[idx-1].isalnum()) {
+ score += separator_bonus;
}
-
- return score;
+ }
+ if (first_char && jump == 0) {
+ score += first_letter_bonus;
+ }
+ if (first_char) {
+ score += max(leading_letter_penalty * jump, max_leading_letter_penalty);
}
+ return score;
+}
}