add metric-ms unit

according to https://github.com/schachmat/wego/issues/106

2 files changed, 7 insertions, 4 deletions

diff --git a/iface/iface.go b/iface/iface.go
index 50beed6..6409118 100644
--- a/iface/iface.go
+++ b/iface/iface.go
@@ -114,10 +114,11 @@ const (
 	UnitsMetric UnitSystem = iota
 	UnitsImperial
 	UnitsSi
+	UnitsMetricMs
 )
 
 func (u UnitSystem) Temp(tempC float32) (res float32, unit string) {
-	if u == UnitsMetric {
+	if u == UnitsMetric || u == UnitsMetricMs {
 		return tempC, "°C"
 	} else if u == UnitsImperial {
 		return tempC*1.8 + 32, "°F"
@@ -133,7 +134,7 @@ func (u UnitSystem) Speed(spdKmph float32) (res float32, unit string) {
 		return spdKmph, "km/h"
 	} else if u == UnitsImperial {
 		return spdKmph / 1.609, "mph"
-	} else if u == UnitsSi {
+	} else if u == UnitsSi || u == UnitsMetricMs {
 		return spdKmph / 3.6, "m/s"
 	}
 	log.Fatalln("Unknown unit system:", u)
@@ -141,7 +142,7 @@ func (u UnitSystem) Speed(spdKmph float32) (res float32, unit string) {
 }
 
 func (u UnitSystem) Distance(distM float32) (res float32, unit string) {
-	if u == UnitsMetric || u == UnitsSi {
+	if u == UnitsMetric || u == UnitsSi || u == UnitsMetricMs{
 		if distM < 1 {
 			return distM * 1000, "mm"
 		} else if distM < 1000 {
diff --git a/main.go b/main.go
index fe6a1de..aa339da 100644
--- a/main.go
+++ b/main.go
@@ -47,7 +47,7 @@ func main() {
 	numdays := flag.Int("days", 3, "`NUMBER` of days of weather forecast to be displayed")
 	flag.IntVar(numdays, "d", 3, "`NUMBER` of days of weather forecast to be displayed (shorthand)")
 	unitSystem := flag.String("units", "metric", "`UNITSYSTEM` to use for output.\n    \tChoices are: metric, imperial, si")
-	flag.StringVar(unitSystem, "u", "metric", "`UNITSYSTEM` to use for output. (shorthand)\n    \tChoices are: metric, imperial, si")
+	flag.StringVar(unitSystem, "u", "metric", "`UNITSYSTEM` to use for output. (shorthand)\n    \tChoices are: metric, imperial, si , metric-ms")
 	selectedBackend := flag.String("backend", "forecast.io", "`BACKEND` to be used")
 	flag.StringVar(selectedBackend, "b", "forecast.io", "`BACKEND` to be used (shorthand)")
 	selectedFrontend := flag.String("frontend", "ascii-art-table", "`FRONTEND` to be used")
@@ -87,6 +87,8 @@ func main() {
 		unit = iface.UnitsImperial
 	} else if *unitSystem == "si" {
 		unit = iface.UnitsSi
+	} else if *unitSystem == "metric-ms" {
+		unit = iface.UnitsMetricMs
 	}
 
 	// get selected frontend and render the weather data with it