replace zxq.co/ripple/hanayo

vendor/github.com/pariz/gountries/gountries.go

@@ -0,0 +1,57 @@
+package gountries
+
+// BaseLang is a basic structure for common language formatting in the JSON file
+type BaseLang struct {
+	Common   string `json:"common"`
+	Official string `json:"official"`
+}
+
+// Geo contains geographical information
+type Geo struct {
+	Region    string `json:"region"`
+	SubRegion string `json:"subregion"`
+	Continent string // Yaml
+	Capital   string `json:"capital"`
+
+	Area float64
+}
+
+// Coordinates contains the coordinates for both Country and SubDivision
+type Coordinates struct {
+	LongitudeString string `json:"longitude"`
+	LatitudeString  string `json:"latitude"`
+
+	MinLongitude float64
+	MinLatitude  float64
+	MaxLongitude float64
+	MaxLatitude  float64
+	Latitude     float64
+	Longitude    float64
+}
+
+// MeasureDistancePythagoras measures distances betweeen two countries using
+// Pythagoras equirect angular equation
+func MeasureDistancePythagoras(m1 Measurer, m2 Measurer) (distance float64) {
+
+	m1Long, m1Lat := m1.MeasurableCoordinates()
+	m2Long, m2Lat := m2.MeasurableCoordinates()
+
+	return CalculatePythagorasEquirectangular(m1Lat, m1Long, m2Lat, m2Long)
+
+}
+
+// MeasureDistanceHaversine measures distances betweeen two countries using
+// Havesine equation
+func MeasureDistanceHaversine(m1 Measurer, m2 Measurer) (distance float64) {
+
+	m1Long, m1Lat := m1.MeasurableCoordinates()
+	m2Long, m2Lat := m2.MeasurableCoordinates()
+
+	return CalculateHaversine(m1Lat, m1Long, m2Lat, m2Long)
+
+}
+
+// Measurer provides coordinates for measurements
+type Measurer interface {
+	MeasurableCoordinates() (lat, long float64)
+}