Bachir Soussi Chiadmi 1bc61b12ad first import
2015-04-08 11:40:19 +02:00

178 lines
7.1 KiB
PHP

<?php
// $Id$
/**
* @file
* Plugin to provide a google geocoder.
*/
/**
* Plugins are described by creating a $plugin array which will be used
* by the system that includes this file.
*/
$plugin = array(
'title' => t("Google Geocoder"),
'description' => t('Geocodes via google geocoder'),
'callback' => 'geocoder_google',
'field_types' => array('text', 'text_long', 'addressfield', 'location', 'text_with_summary', 'computed', 'taxonomy_term_reference'),
'field_callback' => 'geocoder_google_field',
'settings_callback' => 'geocoder_google_form',
'terms_of_service' => 'http://code.google.com/apis/maps/documentation/geocoding/#Limits',
);
/**
* Process Markup
*/
function geocoder_google($address, $options = array()) {
try {
geophp_load();
$query = array(
'address' => $address,
'sensor' => 'false',
);
$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);
}
$geometries = array();
foreach ($data->results as $item) {
// Check if we should reject these results
if (isset($options['reject_results'])) {
if (in_array($item->geometry->location_type, $options['reject_results'], TRUE)) {
continue;
}
}
// Construct a geoPHP Geometry depending on what type of geometry we want returned (defaults to point)
if (!isset($options['geometry_type']) || $options['geometry_type'] == 'point') {
$geom = new Point($item->geometry->location->lng, $item->geometry->location->lat);
}
elseif ($options['geometry_type'] == 'bounds') {
$points = array(
new Point($item->geometry->bounds->southwest->lng, $item->geometry->bounds->southwest->lat),
new Point($item->geometry->bounds->southwest->lng, $item->geometry->bounds->northeast->lat),
new Point($item->geometry->bounds->northeast->lng, $item->geometry->bounds->northeast->lat),
new Point($item->geometry->bounds->northeast->lng, $item->geometry->bounds->southwest->lat),
new Point($item->geometry->bounds->southwest->lng, $item->geometry->bounds->southwest->lat),
);
$geom = new Polygon(array(new LineString($points)));
}
elseif ($options['geometry_type'] == 'viewport') {
$points = array(
new Point($item->geometry->viewport->southwest->lng, $item->geometry->viewport->southwest->lat),
new Point($item->geometry->viewport->southwest->lng, $item->geometry->viewport->northeast->lat),
new Point($item->geometry->viewport->northeast->lng, $item->geometry->viewport->northeast->lat),
new Point($item->geometry->viewport->northeast->lng, $item->geometry->viewport->southwest->lat),
new Point($item->geometry->viewport->southwest->lng, $item->geometry->viewport->southwest->lat),
);
$geom = new Polygon(array(new LineString($points)));
}
// Add additional metadata to the geometry - it might be useful!
$geom->data = array();
$geom->data['geocoder_accuracy'] = $item->geometry->location_type;
$geom->data['geocoder_formatted_address'] = $item->formatted_address;
$geom->data['geocoder_address_components'] = $item->address_components;
$geometries[] = $geom;
}
if (empty($geometries)) {
return;
}
// Check if we should return all results as a compound geometry
if (isset($options['all_results'])) {
if ($options['all_results']) {
return geoPHP::geometryReduce($geometries);
}
}
// The connonical geometry is the first result (best guesse)
$geometry = array_shift($geometries);
// If there are any other geometries, these are auxiliary geometries that represent "alternatives"
if (count($geometries)) {
$geometry->data['geocoder_alternatives'] = $geometries;
}
return $geometry;
} catch (Exception $e) {
watchdog_exception('geocoder', $e);
return FALSE;
}
}
function geocoder_google_field($field, $field_item, $options = array()) {
if ($field['type'] == 'text' || $field['type'] == 'text_long' || $field['type'] == 'text_with_summary' || $field['type'] == 'computed') {
return geocoder_google($field_item['value'], $options);
}
if ($field['type'] == 'addressfield') {
$address = geocoder_widget_parse_addressfield($field_item);
return geocoder_google($address, $options);
}
if ($field['type'] == 'location') {
$address = geocoder_widget_parse_locationfield($field_item);
return geocoder_google($address, $options);
}
if ($field['type'] == 'taxonomy_term_reference') {
$term = taxonomy_term_load($field_item['tid']);
return geocoder_google($term->name);
}
}
function geocoder_google_form($default_values = array()) {
$form = array();
$form['geometry_type'] = array(
'#type' => 'select',
'#title' => 'Geometry Type',
'#options' => array(
'point' => 'Point (default)',
'bounds' => 'Bounding Box',
'viewport' => 'Viewport',
),
'#default_value' => isset($default_values['geometry_type']) ? $default_values['geometry_type'] : 'point',
);
$form['all_results'] = array(
'#type' => 'checkbox',
'#title' => 'Geocode all alternative results',
'#default_value' => isset($default_values['all_results']) ? $default_values['all_results'] : FALSE,
'#description' => 'Often an ambiguous address (such as "Springfield USA") can result in multiple hits. By default we only return the first (best guess) result. Check this to return all results as a Multi-Geometry (MultiPoint or MultiPolygon).',
);
$form['reject_results'] = array(
'#type' => 'checkboxes',
'#title' => 'Reject Results',
'#options' => array(
'APPROXIMATE' => 'APPROXIMATE: indicates that the returned result is approximate.',
'GEOMETRIC_CENTER' => 'GEOMETRIC_CENTER: indicates that the returned result is the geometric center of a result such as a polyline (for example, a street) or polygon (region).',
'RANGE_INTERPOLATED' => 'RANGE_INTERPOLATED: indicates that the returned result reflects an approximation (usually on a road) interpolated between two precise points (such as intersections). Interpolated results are generally returned when rooftop geocodes are unavailable for a street address.',
'ROOFTOP' => 'ROOFTOP: indicates that the returned result is a precise geocode for which we have location information accurate down to street address precision.',
),
'#default_value' => isset($default_values['reject_results']) ? $default_values['reject_results'] : array(),
'#description' => 'Reject results that do not meet a certain level of quality or precision. Check all types of results to reject.',
);
return $form;
}