Add tool for geocoding lookups

geocoding.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+	"os"
+	"regexp"
+	"strings"
+	"github.com/jasonmoo/geo"
+)
+
+// Use the name of the command to figure out if we want to do a straight or a
+// reverse lookup to the geocoding API. Anything with reverse in its name will
+// be doing a reverse lookup.
+func isReverseMode() bool {
+	commandName := os.Args[0]
+	reverseMatcher := regexp.MustCompile("reverse")
+	return reverseMatcher.MatchString(commandName)
+}
+
+func parseCoordinates() (latitude, longitude float64, ok bool) {
+	latitude, longitude, ok = 0, 0, false
+
+	// Assuming seperated coordinates
+	if len(os.Args) == 3 {
+		lat, latOk := strconv.ParseFloat(os.Args[1], 64)
+		long, longOk := strconv.ParseFloat(os.Args[2], 64)
+
+		if nil != latOk || nil != longOk {
+			return
+		}
+
+		latitude, longitude, ok = lat, long, true
+	} else if len(os.Args) == 2 {
+		latitude = 0
+		longitude = 1
+		ok = true
+	}
+
+	return
+}
+
+func ReverseGeocode(latitude, longitude float64) (*geo.Address, error) {
+	coordinateString := fmt.Sprintf("%v,%v", latitude, longitude)
+	return geo.ReverseGeocode(coordinateString)
+}
+
+func main() {
+	var address *geo.Address
+	var error error
+
+	if isReverseMode() {
+		latitude, longitude, ok := parseCoordinates()
+
+		if ok != false {
+			address, error = ReverseGeocode(latitude, longitude)
+		}
+	} else {
+		query := strings.Join(os.Args[1:], " ")
+		address, error = geo.Geocode(query)
+	}
+
+	if nil != error {
+		fmt.Fprintln(os.Stderr, "Did not get any result")
+		os.Exit(0)
+	}
+
+	fmt.Println(address)
+}