➕ Added password validator

vendor/github.com/lane-c-wagner/go-password-validator/base.go

@@ -0,0 +1,64 @@
+package passwordvalidator
+
+const (
+	specialChars = ` !"#$%&'()*+,-./:;<=>?@[\]^_{|}~`
+	lowerChars   = `abcdefghijklmnopqrstuvwxyz`
+	upperChars   = `ABCDEFGHIJKLMNOPQRSTUVWXYZ`
+	digitsChars  = `0123456789`
+)
+
+func getBase(password string) int {
+	chars := map[rune]struct{}{}
+	for _, c := range password {
+		chars[c] = struct{}{}
+	}
+
+	hasSpecial := false
+	hasLower := false
+	hasUpper := false
+	hasDigits := false
+	base := 0
+
+	for c := range chars {
+		if containsRune(specialChars, c) {
+			hasSpecial = true
+			continue
+		}
+		if containsRune(lowerChars, c) {
+			hasLower = true
+			continue
+		}
+		if containsRune(upperChars, c) {
+			hasUpper = true
+			continue
+		}
+		if containsRune(digitsChars, c) {
+			hasDigits = true
+			continue
+		}
+		base++
+	}
+
+	if hasSpecial {
+		base += len(specialChars)
+	}
+	if hasLower {
+		base += len(lowerChars)
+	}
+	if hasUpper {
+		base += len(upperChars)
+	}
+	if hasDigits {
+		base += len(digitsChars)
+	}
+	return base
+}
+
+func containsRune(s string, r rune) bool {
+	for _, c := range s {
+		if c == r {
+			return true
+		}
+	}
+	return false
+}