first version

thousands.go

@@ -0,0 +1,102 @@
+package thousands
+
+import (
+	"fmt"
+	"strings"
+)
+
+func Separate(Number interface{}, language ...string) (string, error) {
+
+	switch Number.(type) {
+	case int:
+	case int8:
+	case int16:
+	case int32:
+	case int64:
+	case float32:
+	case float64:
+
+	default:
+		return "", fmt.Errorf("no valid number format")
+	}
+
+	formattedNumber := fmt.Sprintf("%.2f", Number)
+
+	if len(language) < 1 {
+		language[0] = "en"
+	}
+
+	switch language[0] {
+	case "de":
+
+		formattedNumber = strings.ReplaceAll(formattedNumber, ",", ".")
+		numberLength := len(formattedNumber)
+
+		dec := ""
+
+		if strings.Index(formattedNumber, ".") != -1 {
+			dec = formattedNumber[strings.Index(formattedNumber, ".")+1 : numberLength]
+			formattedNumber = formattedNumber[0:strings.Index(formattedNumber, ".")]
+
+		}
+
+		for i := 0; i <= numberLength; i = i + 4 {
+
+			a := formattedNumber[0 : numberLength-i]
+			b := formattedNumber[numberLength-i : numberLength]
+			formattedNumber = a + "." + b
+
+		}
+
+		if formattedNumber[0:1] == "." {
+			formattedNumber = formattedNumber[1:numberLength]
+		}
+
+		if formattedNumber[numberLength-1:numberLength] == "." {
+			formattedNumber = formattedNumber[0 : numberLength-1]
+		}
+
+		if dec != "" {
+			formattedNumber = formattedNumber + "," + dec
+		}
+
+		return formattedNumber, nil
+
+	case "en":
+
+		formattedNumber = strings.ReplaceAll(formattedNumber, ",", "")
+		numberLength := len(formattedNumber)
+
+		dec := ""
+
+		if strings.Index(formattedNumber, ".") != -1 {
+			dec = formattedNumber[strings.Index(formattedNumber, ".")+1 : numberLength]
+			formattedNumber = formattedNumber[0:strings.Index(formattedNumber, ".")]
+
+		}
+
+		for i := 0; i <= numberLength; i = i + 4 {
+
+			a := formattedNumber[0 : numberLength-i]
+			b := formattedNumber[numberLength-i : numberLength]
+			formattedNumber = a + "," + b
+
+		}
+
+		if formattedNumber[0:1] == "," {
+			formattedNumber = formattedNumber[1:numberLength]
+		}
+
+		if formattedNumber[numberLength-1:numberLength] == "," {
+			formattedNumber = formattedNumber[0 : numberLength-1]
+		}
+
+		if dec != "" {
+			formattedNumber = formattedNumber + "." + dec
+		}
+
+		return formattedNumber, nil
+	}
+
+	return formattedNumber, nil
+}