From 953852e6e984f8a639cf1a5ac4116fff755d538a Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 7 May 2015 15:39:42 +1200
Subject: Add Gisgraphy reverse geocoder

---
 .../traccar/geocode/NominatimReverseGeocoder.java  | 49 ++++++++++++++++++----
 1 file changed, 40 insertions(+), 9 deletions(-)

(limited to 'src/org/traccar/geocode/NominatimReverseGeocoder.java')

diff --git a/src/org/traccar/geocode/NominatimReverseGeocoder.java b/src/org/traccar/geocode/NominatimReverseGeocoder.java
index c9393da42..911e0fa71 100644
--- a/src/org/traccar/geocode/NominatimReverseGeocoder.java
+++ b/src/org/traccar/geocode/NominatimReverseGeocoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2014 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,8 +15,12 @@
  */
 package org.traccar.geocode;
 
+import java.io.InputStreamReader;
 import java.net.URL;
 import java.net.URLConnection;
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonObject;
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 
@@ -26,23 +30,50 @@ import org.w3c.dom.Document;
 public class NominatimReverseGeocoder implements ReverseGeocoder {
 
     private final String url;
+
+    public NominatimReverseGeocoder() {
+        this("http://nominatim.openstreetmap.org/reverse");
+    }
     
     public NominatimReverseGeocoder(String url) {
-        this.url = url + "?format=xml&lat=%f&lon=%f&zoom=18&addressdetails=0";
+        this.url = url + "?format=json&lat=%f&lon=%f&zoom=18&addressdetails=1";
     }
 
     @Override
-    public String getAddress(double latitude, double longitude) {
+    public String getAddress(AddressFormat format, double latitude, double longitude) {
         
         try {
-
+            Address address = new Address();
             URLConnection conn = new URL(String.format(url, latitude, longitude)).openConnection();
 
-            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
-            DocumentBuilder builder = factory.newDocumentBuilder();
-            Document doc = builder.parse(conn.getInputStream());
-            
-            return doc.getFirstChild().getLastChild().getFirstChild().getNodeValue();
+            JsonObject json = Json.createReader(new InputStreamReader(conn.getInputStream())).readObject().getJsonObject("address");
+
+            if (json.containsKey("house_number")) {
+                address.setHouse(json.getString("house_number"));
+            }
+            if (json.containsKey("road")) {
+                address.setStreet(json.getString("road"));
+            }
+            if (json.containsKey("village")) {
+                address.setSettlement(json.getString("village"));
+            }
+            if (json.containsKey("city")) {
+                address.setSettlement(json.getString("city"));
+            }
+            if (json.containsKey("state_district")) {
+                address.setDistrict(json.getString("state_district"));
+            }
+            if (json.containsKey("state")) {
+                address.setState(json.getString("state"));
+            }
+            if (json.containsKey("country_code")) {
+                address.setCountry(json.getString("country_code").toUpperCase());
+            }
+            if (json.containsKey("postcode")) {
+                address.setPostcode(json.getString("postcode"));
+            }
+
+            return format.format(address);
 
         } catch(Exception error) {
             Log.warning(error);
-- 
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