Read location information from exif and set it as the node's location

Here's some code that reads latitude and longitude info from the exif and, if locations are enabled for the image node type, sets it to do automatic geocoding of image nodes.

I didn't have time to make a patch and since the code is small, I'll post it directly. Put it in photobar_create_image between

 $exif = exif_read_data($file);
 if ( $exif && isset($exif['DateTime']) ) { ...

Here's the code:

  $enable_locations = variable_get('location_image', 0);

  if ($exif && $enable_locations && isset($exif['GPSLatitude'])) {
    $latitude = $exif['GPSLatitude'][0] + $exif['GPSLatitude'][1]/60 + $exif['GPSLatitude'][2]/3600;
  }
  else {
    $latitude = -1;
  }
  
  if ($exif && $enable_locations && isset($exif['GPSLongitude'])) {
    $longitude = $exif['GPSLongitude'][0] + $exif['GPSLongitude'][1]/60 + $exif['GPSLongitude'][2]/3600;
  }
  else {
    $longitude = -1;
  }
  
  if ($latitude != -1 && $longitude != -1) {
    $node->location['latitude'] = $latitude;
    $node->location['longitude'] = $longitude;
    $node->location['lat'] = $latitude;
    $node->location['lon'] = $longitude;
  }