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-rw-r--r--weather/weather.go57
1 files changed, 57 insertions, 0 deletions
diff --git a/weather/weather.go b/weather/weather.go
new file mode 100644
index 0000000..d60e22c
--- /dev/null
+++ b/weather/weather.go
@@ -0,0 +1,57 @@
+// Package weather provides functions to retrieve eweather forecast data from yr.no
+package weather
+
+import (
+ "encoding/xml"
+ "net/http"
+ "time"
+)
+
+func toTime(s string) time.Time {
+ t, _ := time.Parse("2006-01-02T15:04:05", s)
+ return t
+}
+
+type Temperature struct {
+ Value int `xml:"value,attr"`
+ Unit string `xml:"unit,attr"`
+}
+
+type Weather struct {
+ Temp Temperature `xml:"temperature"`
+ Symbol struct {
+ Var string `xml:"var,attr"`
+ } `xml:"symbol"`
+ From string `xml:"from,attr"`
+ URL string
+ Icon string
+}
+
+func (w *Weather) prepIcon() {
+ w.Icon = "http://symbol.yr.no/grafikk/sym/b100/" + w.Symbol.Var + ".png"
+}
+
+type weatherdata struct {
+ Forecast []*Weather `xml:"forecast>tabular>time"`
+}
+
+func CurrentWeather(place string) (Weather, error) {
+ url := "http://www.yr.no/place/" + place + "/forecast_hour_by_hour.xml"
+ resp, err := http.Get(url)
+ if err != nil {
+ return Weather{}, err
+ }
+ defer resp.Body.Close()
+
+ var wd weatherdata
+ dec := xml.NewDecoder(resp.Body)
+ if err := dec.Decode(&wd); err != nil {
+ return Weather{}, err
+ }
+
+ w := wd.Forecast[0]
+ w.URL = "http://www.yr.no/place/" + place
+ w.prepIcon()
+
+ return *w, nil
+}