Forgotten file with password strength related functions

wizard/utils.js

@@ -0,0 +1,39 @@
+
+.pragma library
+
+// grabbed from SO answer page: http://stackoverflow.com/questions/948172/password-strength-meter
+
+function scorePassword(pass) {
+    var score = 0;
+    if (!pass)
+        return score;
+
+    // award every unique letter until 5 repetitions
+    var letters = {};
+    for (var i=0; i<pass.length; i++) {
+        letters[pass[i]] = (letters[pass[i]] || 0) + 1;
+        score += 5.0 / letters[pass[i]];
+    }
+
+    // bonus points for mixing it up
+    var variations = {
+        digits: /\d/.test(pass),
+        lower: /[a-z]/.test(pass),
+        upper: /[A-Z]/.test(pass),
+        nonWords: /\W/.test(pass),
+    }
+
+    var variationCount = 0;
+    for (var check in variations) {
+        variationCount += (variations[check] === true) ? 1 : 0;
+    }
+    score += (variationCount - 1) * 10;
+
+    return parseInt(score);
+}
+
+function mapScope (inputScopeFrom, inputScopeTo, outputScopeFrom, outputScopeTo, value) {
+    var x = (value - inputScopeFrom) / (inputScopeTo - inputScopeFrom);
+    var result = outputScopeFrom + ((outputScopeTo - outputScopeFrom) * x);
+    return result;
+}