Switch to using Antony's list of country coordinates, and load country code of each city.

core/src/main/kotlin/net/corda/core/node/PhysicalLocationStructures.kt

@@ -40,14 +40,16 @@ data class WorldCoordinate(val latitude: Double, val longitude: Double) {
 /**
  * A labelled [WorldCoordinate], where the label is human meaningful. For example, the name of the nearest city.
  * Labels should not refer to non-landmarks, for example, they should not contain the names of organisations.
+ * The [countryCode] field is a two letter ISO country code.
  */
 @CordaSerializable
-data class PhysicalLocation(val coordinate: WorldCoordinate, val description: String)
+data class PhysicalLocation(val coordinate: WorldCoordinate, val description: String, val countryCode: String)
 
 /**
  * A simple lookup table of city names to their coordinates. Lookups are case insensitive.
  */
 object CityDatabase {
+    private val matcher = Regex("^([a-zA-Z- ]*) \\((..)\\)$")
     private val caseInsensitiveLookups = HashMap<String, PhysicalLocation>()
     val cityMap = HashMap<String, PhysicalLocation>()
 
@@ -56,9 +58,11 @@ object CityDatabase {
             for (line in lines) {
                 if (line.startsWith("#")) continue
                 val (name, lng, lat) = line.split('\t')
-                val location = PhysicalLocation(WorldCoordinate(lat.toDouble(), lng.toDouble()), name)
-                caseInsensitiveLookups[name.toLowerCase()] = location
-                cityMap[name] = location
+                val matchResult = matcher.matchEntire(name) ?: throw Exception("Could not parse line: $line")
+                val (city, country) = matchResult!!.destructured
+                val location = PhysicalLocation(WorldCoordinate(lat.toDouble(), lng.toDouble()), city, country)
+                caseInsensitiveLookups[city.toLowerCase()] = location
+                cityMap[city] = location
             }
         }
     }

core/src/main/resources/net/corda/core/node/cities.txt

@@ -777,7 +777,6 @@ Changwat Tak (TH)	99.12	16.87
 Yangzhou (CN)	119.43	32.38
 Novokuznetsk (RU)	87.08	53.75
 Kisangani (CD)	25.18	0.52
-Bor Sa`id (EG)	32.28	31.27
 Warri (NG)	5.75	5.52
 Yongkang (CN)	120.02	28.87
 Tanggu (CN)	117.63	39.02

core/src/test/kotlin/net/corda/core/node/CityDatabaseTest.kt

@@ -0,0 +1,14 @@
+package net.corda.core.node
+
+import org.junit.Assert.*
+import org.junit.Test
+
+class CityDatabaseTest {
+    @Test
+    fun lookups() {
+        val london = CityDatabase["London"]!!
+        assertEquals(WorldCoordinate(51.5, -0.12), london.coordinate)
+        assertEquals("GB", london.countryCode)
+        assertEquals("London", london.description)
+    }
+}