Adds crawler for whiskysite.nl. (crawler)

1 files changed, 14 insertions, 0 deletions

diff --git a/crawler/utility.go b/crawler/utility.go
index 29f14d6..f588c22 100644
--- a/crawler/utility.go
+++ b/crawler/utility.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"errors"
+	"math"
 	"regexp"
 	"strconv"
 	"strings"
@@ -189,3 +190,16 @@ func get_base_price(e *colly.HTMLElement) (int, error) {
 
 	return base_price, nil
 }
+
+/*
+ * Source: https://golang.org/src/math/floor.go?s=2165:2200#L104
+ * Will use std lib with go version >= 1.10
+ */
+func RoundToEven(x float64) float64 {
+	t := math.Trunc(x)
+	odd := math.Remainder(t, 2) != 0
+	if d := math.Abs(x - t); d > 0.5 || (d == 0.5 && odd) {
+		return t + math.Copysign(1, x)
+	}
+	return t
+}