Adding upstream version 2.1.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

parse.go

@@ -0,0 +1,40 @@
+package chart
+
+import (
+	"strconv"
+	"strings"
+	"time"
+)
+
+// ParseFloats parses a list of floats.
+func ParseFloats(values ...string) ([]float64, error) {
+	var output []float64
+	var parsedValue float64
+	var err error
+	var cleaned string
+	for _, value := range values {
+		cleaned = strings.TrimSpace(strings.Replace(value, ",", "", -1))
+		if cleaned == "" {
+			continue
+		}
+		if parsedValue, err = strconv.ParseFloat(cleaned, 64); err != nil {
+			return nil, err
+		}
+		output = append(output, parsedValue)
+	}
+	return output, nil
+}
+
+// ParseTimes parses a list of times with a given format.
+func ParseTimes(layout string, values ...string) ([]time.Time, error) {
+	var output []time.Time
+	var parsedValue time.Time
+	var err error
+	for _, value := range values {
+		if parsedValue, err = time.Parse(layout, value); err != nil {
+			return nil, err
+		}
+		output = append(output, parsedValue)
+	}
+	return output, nil
+}