From a8a23a6cb3f20a3e1813f191727bcdb9c6884548 Mon Sep 17 00:00:00 2001
From: horus_arch
Date: Sun, 4 Feb 2018 20:01:00 +0100
Subject: Better Makefile. Source:
 https://www.complicissimus.de/golang-makefile/

---
 sanitize_price.go | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 sanitize_price.go

(limited to 'sanitize_price.go')

diff --git a/sanitize_price.go b/sanitize_price.go
new file mode 100644
index 0000000..5be9e67
--- /dev/null
+++ b/sanitize_price.go
@@ -0,0 +1,82 @@
+package main
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+)
+
+func sanitize_price(price string) (int, error) {
+	multiply_by_100 := false
+
+	price = strings.TrimSpace(price)
+
+	price = strings.TrimPrefix(price, "€")
+	price = strings.TrimSpace(price)
+
+	price = strings.TrimSuffix(price, "€")
+	price = strings.TrimSpace(price)
+
+	c := string(price[len(price)-2:])
+	c = string(c[0:1])
+
+	/*
+		Extracts the second last char and checks if it's a "." or a ",".
+	*/
+	if "," == c {
+		if strings.Count(price, ",") > 1 {
+			return 0, errors.New("Invalid format")
+		}
+
+		multiply_by_10 = true
+
+	} else if "." == c {
+		if strings.Count(price, ".") > 1 {
+			return 0, errors.New("Invalid format")
+		}
+
+		multiply_by_10 = true
+
+	}
+
+	c := string(price[len(price)-3:])
+	c = string(c[0:1])
+
+	/*
+		Extracts the third last char and checks if it's a "." or a ",".
+	*/
+	if "," == c {
+		if strings.Count(price, ",") > 1 {
+			return 0, errors.New("Invalid format")
+		}
+
+		multiply_by_100 = true
+
+	} else if "." == c {
+		if strings.Count(price, ".") > 1 {
+			return 0, errors.New("Invalid format")
+		}
+
+		multiply_by_100 = true
+
+	}
+
+	price = strings.Replace(price, ",", "", -1)
+	price = strings.Replace(price, ".", "", -1)
+
+	/*
+		Casts the price to integer in cents (not euro!).
+	*/
+	price_int, err := strconv.Atoi(price)
+	if err != nil {
+		return 0, err
+	}
+
+	if multiply_by_10 {
+		price_int = price_int * 10
+	} else if multiply_by_100 {
+		price_int = price_int * 100
+	}
+
+	return price_int, nil
+}
-- 
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