add files

sanitize.go

@@ -0,0 +1,60 @@
+package sanitize
+
+// Integer returns only numbers
+func Integer(input string) string {
+	runes := []rune{}
+	n := 0
+	for _, r := range input {
+		if !(r == 45) && !(r >= 48 && r <= 57) { // regexp.MustCompile(`[^-\d]`).ReplaceAllString(input, "$1")
+			continue
+		}
+		switch r {
+		case 45: // "-"
+			if n > 0 {
+				continue
+			}
+		default: // Digits
+			n++
+		}
+		runes = append(runes, r)
+	}
+	if n > 0 {
+		return string(runes)
+	}
+	return ""
+}
+
+// Float returns sanitized floating-point numbers
+func Float(input string) string {
+	runes := []rune{}
+	dot := false
+	n := 0
+	for i, r := range input {
+		if !(r >= 44 && r <= 46) && !(r >= 48 && r <= 57) { // regexp.MustCompile(`[^-\.,\d]`).ReplaceAllString(input, "$1")
+			continue
+		}
+		switch r {
+		case 45: // "-"
+			if n > 0 {
+				continue
+			}
+		case 44: // ","
+			fallthrough
+		case 46: // "."
+			if dot || i == len(input)-1 {
+				continue
+			}
+			dot = true
+			if n == 0 {
+				runes = append(runes, 48) // "0"
+			}
+		default: // Digits
+			n++
+		}
+		runes = append(runes, r)
+	}
+	if n > 0 {
+		return string(runes)
+	}
+	return ""
+}