Issue #3018204 by sjerdo, jgullstr: File missing: Reverse-Geocode support

plugins/geocoder_reverse_handler/google.inc

+<?php
+// $Id$
+
+/**
+ * @file
+ * Plugin to provide a google reverse geocoder.
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t("Google Reverse Geocoder"),
+  'description' => t('Reverse Geocodes via google reverse geocoder'),
+  'callback' => 'geocoder_reverse_google',
+  'terms_of_service' => 'http://code.google.com/apis/maps/documentation/geocoding/#Limits',
+);
+
+/**
+ * Process Markup
+ */
+function geocoder_reverse_google($lat, $long, $options = array()) {
+  try {
+    geophp_load();
+
+    $orig_location = new Point($long, $lat);
+
+    $query = array(
+      'latlng' => "$lat,$long",
+      'sensor' => 'false',
+    );
+
+    // add language if exist
+    if (isset($options['language'])) {
+      $query['language'] = $options['language'];
+    }
+
+    $url = url("http://maps.googleapis.com/maps/api/geocode/json", array('query' => $query));
+    $result = drupal_http_request($url);
+
+    if (isset($result->error)) {
+      $args = array(
+        '@code' => $result->code,
+        '@error' => $result->error,
+      );
+      $msg = t('HTTP request to google API failed.\nCode: @code\nError: @error', $args);
+      throw new Exception($msg);
+    }
+
+    $data = json_decode($result->data);
+
+    if ($data->status != 'OK') {
+      $args = array('@status' => $data->status);
+      $msg = t('Google API returned bad status.\nStatus: @status', $args);
+      throw new Exception($msg);
+    }
+
+    $addresses = array();
+
+    foreach ($data->results as $item) {
+      // Check if we should reject these results
+      if (isset($options['reject_results'])) {
+        if (in_array($item->geometry->location_type, $options['reject_results'], TRUE)) {
+          continue;
+        }
+      }
+
+      // Reject this result if it is too far
+      $address = new Point($item->geometry->location->lng, $item->geometry->location->lat);
+      $distance = $orig_location->distance($address);
+      if (isset($options['reject_distance']) && $distance > $options['reject_distance']) {
+          continue;
+      }
+
+      $address->address = $item->formatted_address;
+
+      // Add additional metadata to the geometry - it might be useful!
+      $address->data = array();
+      $address->data['geocoder_accuracy'] = $item->geometry->location_type;
+      $address->data['geocoder_formatted_address'] = $item->formatted_address;
+      $address->data['geocoder_address_components'] = $item->address_components;
+      $address->data['distance'] = $distance;
+
+      $addresses[] = $address;
+    }
+
+    if (empty($addresses)) {
+      return;
+    }
+
+    // The connonical geometry is the first result (best guesse)
+    $result = array_shift($addresses);
+
+    // If there are any other addresses, these are auxiliary addresses that represent "alternatives"
+    if (count($addresses)) {
+      $result->data['geocoder_alternatives'] = $addresses;
+    }
+
+    return $result;
+  } catch (Exception $e) {
+    watchdog_exception('geocoder', $e);
+    return FALSE;
+  }
+}