A command line tool for Mac OS X written in Swift that uses CoreLocation for reverse geocoding a location from latitude and longitude. The geocoding part of this script will work on OS X as well as iOS.

LocateMe.swift

#!/usr/bin/env swift

// Run this command line tool as a dynamic script or compile a binary
// using the following command:
//   swiftc -sdk `xcrun --show-sdk-path` LocateMe.swift

import Cocoa
import CoreLocation

extension String {
    func doubleValue() -> Double {
        return (self as NSString).doubleValue
    }
}

var shouldKeepRunning = true
let runLoop = NSRunLoop.currentRunLoop()
let distantFuture = NSDate.distantFuture() as! NSDate

let args = Process.arguments

if args.count != 3 {
    println("usage: \(args[0].lastPathComponent) <lat> <lon>")
    exit(-1)
}

let lat: Double = Double(args[1].doubleValue())
let lon: Double = Double(args[2].doubleValue())

let location = CLLocation(latitude: lat, longitude: lon)
let geocoder = CLGeocoder()
geocoder.reverseGeocodeLocation(location) { locations, error in
    if let error = error {
        NSLog("\(error)")
    } else {
        if let placemarks = locations as? [CLPlacemark] {
            for placemark in placemarks {
                println("ISOcountryCode:     \(placemark.ISOcountryCode)")
                println("country:            \(placemark.country)")
                println("postalCode:         \(placemark.postalCode)")
                println("administrativeArea: \(placemark.administrativeArea)")
                println("locality:           \(placemark.locality)")
                println("subLocality:        \(placemark.subLocality)")
                println("subThoroughfare:    \(placemark.subThoroughfare)")
            }
        }
    }
    shouldKeepRunning = false
}

while shouldKeepRunning == true &&
    runLoop.runMode(NSDefaultRunLoopMode, beforeDate: distantFuture) {}