Ubuntu 21.04 aarch64 portability; Bug fixes.

2021-10-02 05:23:56 -04:00
parent 64c1806ce3
commit 11b2a94b17
14 changed files with 418 additions and 33 deletions
@@ -0,0 +1,73 @@
+
+
+let escapedCharacters = /[^a-zA-Z0-9]/g;
+
+function stringToRegex(text: string): RegExp
+{
+    text = text.replace(escapedCharacters,"\\$&");
+
+    return new RegExp(text,"i");
+}
+
+
+class SearchFilter {
+    regexes: RegExp[];
+
+    constructor(text: string)
+    {
+        let regexes: RegExp[] = [];
+
+        let bits = text.split(' ');
+        for (let bit of bits)
+        {
+            if (bit.length !== 0)
+            {
+                regexes.push(stringToRegex(bit));
+            }
+        }
+
+
+        this.regexes = regexes;
+    }
+
+    score(...strings: string[]): number {
+        let score = 0;
+        for (let r = 0; r < this.regexes.length; ++r)
+        {
+            let regex = this.regexes[r];
+            regex.lastIndex = 0;
+            let matched = false;
+            for (let i = 0; i < strings.length; ++i)
+            {
+                let s = strings[i];
+                let m = regex.exec(s);
+                if (m) {
+                    matched = true;
+                    if (m.index === 0) 
+                    {
+                        if (r === 0 && i === 0) {
+                            score += 16;
+                        } else {
+                            score += 8;
+                        }
+                    }
+                    let end = m.index + m[0].length;
+                    if (end === s.length || (end < s.length && s[end] === ' ')) // word boundary
+                    {
+                        score += 2;
+                    } else {
+                        score += 1;
+                    }
+                    break;
+                }
+            }
+            if (!matched) return 0;
+        }
+
+        return score;
+
+    }
+
+};
+
+export default SearchFilter;