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1 | <?php |
2 | /*************************************************************************** | |
12262f13 | 3 | * Copyright (C) 2003-2011 Polytechnique.org * |
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4 | * http://opensource.polytechnique.org/ * |
5 | * * | |
6 | * This program is free software; you can redistribute it and/or modify * | |
7 | * it under the terms of the GNU General Public License as published by * | |
8 | * the Free Software Foundation; either version 2 of the License, or * | |
9 | * (at your option) any later version. * | |
10 | * * | |
11 | * This program is distributed in the hope that it will be useful, * | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
14 | * GNU General Public License for more details. * | |
15 | * * | |
16 | * You should have received a copy of the GNU General Public License * | |
17 | * along with this program; if not, write to the Free Software * | |
18 | * Foundation, Inc., * | |
19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * | |
20 | ***************************************************************************/ | |
21 | ||
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22 | // Implementation of a Geocoder using the Google Maps API v3. Please refer |
23 | // to the following link for details: | |
24 | // http://code.google.com/apis/maps/documentation/geocoding/ | |
4c906759 | 25 | // |
0f5f1b70 SJ |
26 | // It requires the properties gmaps_url to be defined in section Geocoder |
27 | // in plat/al's configuration (platal.ini & platal.conf). | |
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28 | class GMapsGeocoder extends Geocoder { |
29 | ||
30 | // Maximum number of Geocoding calls to the Google Maps API. | |
31 | const MAX_GMAPS_RPC_CALLS = 5; | |
32 | ||
26ba053e | 33 | public function getGeocodedAddress(Address $address, $defaultLanguage = null, $forceLanguage = false) { |
4e7a3faa SJ |
34 | $this->prepareAddress($address); |
35 | $textAddress = $this->getTextToGeocode($address->text); | |
2ffc0393 | 36 | if (is_null($defaultLanguage)) { |
0f5f1b70 | 37 | $defaultLanguage = Platal::globals()->geocoder->gmaps_language; |
2ffc0393 | 38 | } |
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39 | |
40 | // Try to geocode the full address. | |
2ffc0393 SJ |
41 | if (($geocodedData = $this->getPlacemarkForAddress($textAddress, $defaultLanguage))) { |
42 | $this->getUpdatedAddress($address, $geocodedData, null, $forceLanguage); | |
4e7a3faa | 43 | return; |
4c906759 SJ |
44 | } |
45 | ||
46 | // If the full geocoding failed, try to geocode only the final part of the address. | |
47 | // We start by geocoding everything but the first line, and continue until we get | |
48 | // a result. To respect the limit of GMaps calls, we ignore the first few lines | |
49 | // if there are too many address lines. | |
50 | $addressLines = explode("\n", $textAddress); | |
51 | $linesCount = count($addressLines); | |
52 | for ($i = max(1, $linesCount - self::MAX_GMAPS_RPC_CALLS + 1); $i < $linesCount; ++$i) { | |
53 | $extraLines = implode("\n", array_slice($addressLines, 0, $i)); | |
54 | $toGeocode = implode("\n", array_slice($addressLines, $i)); | |
2ffc0393 SJ |
55 | if (($geocodedData = $this->getPlacemarkForAddress($toGeocode, $defaultLanguage))) { |
56 | $this->getUpdatedAddress($address, $geocodedData, $extraLines, $forceLanguage); | |
4e7a3faa | 57 | return; |
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58 | } |
59 | } | |
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60 | } |
61 | ||
26ba053e | 62 | public function stripGeocodingFromAddress(Address $address) { |
0f5f1b70 SJ |
63 | $address->formatted_address = ''; |
64 | $address->types = ''; | |
65 | $address->latitude = null; | |
66 | $address->longitude = null; | |
67 | $address->southwest_latitude = null; | |
68 | $address->southwest_longitude = null; | |
69 | $address->northeast_latitude = null; | |
70 | $address->northeast_longitude = null; | |
71 | $address->location_type = null; | |
72 | $address->partial_match = false; | |
73f6c165 | 73 | } |
00e5200b | 74 | |
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75 | // Updates the address with the geocoded information from Google Maps. Also |
76 | // cleans up the final informations. | |
26ba053e | 77 | private function getUpdatedAddress(Address $address, array $geocodedData, $extraLines, $forceLanguage) { |
803612ae | 78 | $this->fillAddressWithGeocoding($address, $geocodedData, false); |
2ffc0393 | 79 | $this->formatAddress($address, $extraLines, $forceLanguage); |
4c906759 SJ |
80 | } |
81 | ||
82 | // Retrieves the Placemark object (see #getPlacemarkFromJson()) for the @p | |
83 | // address, by querying the Google Maps API. Returns the array on success, | |
84 | // and null otherwise. | |
2ffc0393 | 85 | private function getPlacemarkForAddress($address, $defaultLanguage) { |
803612ae | 86 | $url = $this->getGeocodingUrl($address, $defaultLanguage); |
4c906759 SJ |
87 | $geoData = $this->getGeoJsonFromUrl($url); |
88 | ||
0f5f1b70 | 89 | return ($geoData ? $this->getPlacemarkFromJson($geoData, $url) : null); |
4c906759 SJ |
90 | } |
91 | ||
92 | // Prepares address to be geocoded | |
26ba053e | 93 | private function prepareAddress(Address $address) { |
4e7a3faa | 94 | $address->text = preg_replace('/\s*\n\s*/m', "\n", trim($address->text)); |
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95 | } |
96 | ||
97 | // Builds the Google Maps geocoder url to fetch information about @p address. | |
98 | // Returns the built url. | |
803612ae | 99 | private function getGeocodingUrl($address, $defaultLanguage) { |
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100 | global $globals; |
101 | ||
102 | $parameters = array( | |
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103 | 'language' => $defaultLanguage, |
104 | 'region' => $globals->geocoder->gmaps_region, | |
105 | 'sensor' => 'false', // The queried address wasn't obtained from a GPS sensor. | |
106 | 'address' => $address, // The queries address. | |
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107 | ); |
108 | ||
0f5f1b70 | 109 | return $globals->geocoder->gmaps_url . 'json?' . http_build_query($parameters); |
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110 | } |
111 | ||
112 | // Fetches JSON-encoded data from a Google Maps API url, and decode them. | |
113 | // Returns the json array on success, and null otherwise. | |
114 | private function getGeoJsonFromUrl($url) { | |
115 | global $globals; | |
116 | ||
117 | // Prepare a backtrace object to log errors. | |
118 | $bt = null; | |
119 | if ($globals->debug & DEBUG_BT) { | |
120 | if (!isset(PlBacktrace::$bt['Geoloc'])) { | |
121 | new PlBacktrace('Geoloc'); | |
122 | } | |
123 | $bt = &PlBacktrace::$bt['Geoloc']; | |
124 | $bt->start($url); | |
125 | } | |
126 | ||
127 | // Fetch the geocoding data. | |
128 | $rawData = file_get_contents($url); | |
129 | if (!$rawData) { | |
130 | if ($bt) { | |
4e7a3faa | 131 | $bt->stop(0, 'Could not retrieve geocoded address from GoogleMaps.'); |
4c906759 SJ |
132 | } |
133 | return null; | |
134 | } | |
135 | ||
136 | // Decode the JSON-encoded data, and check for their validity. | |
137 | $data = json_decode($rawData, true); | |
138 | if ($bt) { | |
139 | $bt->stop(count($data), null, $data); | |
140 | } | |
141 | ||
142 | return $data; | |
143 | } | |
144 | ||
145 | // Extracts the most appropriate placemark from the JSON data fetched from | |
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146 | // Google Maps. Returns a Placemark array on success, and null otherwise. |
147 | // http://code.google.com/apis/maps/documentation/geocoding/#StatusCodes | |
148 | private function getPlacemarkFromJson(array $data, $url) { | |
149 | // Check for geocoding status. | |
150 | $status = $data['status']; | |
151 | ||
152 | // If no result, return null. | |
153 | if ($status == 'ZERO_RESULTS') { | |
4c906759 SJ |
154 | return null; |
155 | } | |
156 | ||
0f5f1b70 SJ |
157 | // If there are results return the first one. |
158 | if ($status == 'OK') { | |
159 | return $data['results'][0]; | |
4c906759 SJ |
160 | } |
161 | ||
0f5f1b70 SJ |
162 | // Report the error. |
163 | $mailer = new PlMailer('profile/geocoding.mail.tpl'); | |
164 | $mailer->assign('status', $status); | |
165 | $mailer->assign('url', $url); | |
166 | $mailer->send(); | |
167 | return null; | |
4c906759 SJ |
168 | } |
169 | ||
170 | // Fills the address with the geocoded data | |
26ba053e | 171 | private function fillAddressWithGeocoding(Address $address, $geocodedData, $isLocal) { |
0f5f1b70 SJ |
172 | $address->types = implode(',', $geocodedData['types']); |
173 | $address->formatted_address = $geocodedData['formatted_address']; | |
174 | $address->components = $geocodedData['address_components']; | |
175 | $address->latitude = $geocodedData['geometry']['location']['lat']; | |
176 | $address->longitude = $geocodedData['geometry']['location']['lng']; | |
177 | $address->southwest_latitude = $geocodedData['geometry']['viewport']['southwest']['lat']; | |
178 | $address->southwest_longitude = $geocodedData['geometry']['viewport']['southwest']['lng']; | |
179 | $address->northeast_latitude = $geocodedData['geometry']['viewport']['northeast']['lat']; | |
180 | $address->northeast_longitude = $geocodedData['geometry']['viewport']['northeast']['lng']; | |
181 | $address->location_type = $geocodedData['geometry']['location_type']; | |
182 | $address->partial_match = isset($geocodedData['partial_match']) ? true : false; | |
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183 | } |
184 | ||
185 | // Formats the text of the geocoded address using the unused data and | |
186 | // compares it to the given address. If they are too different, the user | |
187 | // will be asked to choose between them. | |
26ba053e | 188 | private function formatAddress(Address $address, $extraLines, $forceLanguage) |
803612ae | 189 | { |
0f5f1b70 SJ |
190 | /* XXX: Check how to integrate this in the new geocoding system. |
191 | if (!$forceLanguage) { | |
2ffc0393 | 192 | $languages = XDB::fetchOneCell('SELECT IF(ISNULL(gc1.belongsTo), gl1.language, gl2.language) |
803612ae | 193 | FROM geoloc_countries AS gc1 |
2ffc0393 | 194 | INNER JOIN geoloc_languages AS gl1 ON (gc1.iso_3166_1_a2 = gl1.iso_3166_1_a2) |
803612ae | 195 | LEFT JOIN geoloc_countries AS gc2 ON (gc1.belongsTo = gc2.iso_3166_1_a2) |
2ffc0393 | 196 | LEFT JOIN geoloc_languages AS gl2 ON (gc2.iso_3166_1_a2 = gl2.iso_3166_1_a2) |
803612ae SJ |
197 | WHERE gc1.iso_3166_1_a2 = {?}', |
198 | $address->countryId); | |
199 | $toGeocode = substr($address->text, strlen($extraLines)); | |
200 | foreach (explode(',', $languages) as $language) { | |
0f5f1b70 | 201 | if ($language != Platal::globals()->geocoder->gmaps_language) { |
803612ae | 202 | $geocodedData = $this->getPlacemarkForAddress($toGeocode, $language); |
0f5f1b70 SJ |
203 | $this->fillAddressWithGeocoding($address, $geocodedData, true); |
204 | break; | |
803612ae SJ |
205 | } |
206 | } | |
0f5f1b70 | 207 | }*/ |
4e7a3faa | 208 | $address->text = str_replace("\n", "\r\n", $address->text); |
5a10ab14 SJ |
209 | } |
210 | ||
00e5200b SJ |
211 | // Trims the name of the real country if it contains an ISO 3166-1 non-country |
212 | // item. For that purpose, we compare the last but one line of the address with | |
213 | // all non-country items of ISO 3166-1. | |
4e7a3faa | 214 | private function getTextToGeocode($text) |
00e5200b | 215 | { |
1c305d4c | 216 | $res = XDB::iterator('SELECT countryEn, country |
00e5200b SJ |
217 | FROM geoloc_countries |
218 | WHERE belongsTo IS NOT NULL'); | |
219 | $countries = array(); | |
220 | foreach ($res as $item) { | |
221 | $countries[] = $item[0]; | |
222 | $countries[] = $item[1]; | |
223 | } | |
4e7a3faa | 224 | $textLines = explode("\n", $text); |
00e5200b SJ |
225 | $countLines = count($textLines); |
226 | $needle = strtoupper(trim($textLines[$countLines - 2])); | |
227 | $isPseudoCountry = false; | |
96c7ea54 SJ |
228 | if ($needle) { |
229 | foreach ($countries as $country) { | |
230 | if (strtoupper($country) === $needle) { | |
231 | $isPseudoCountry = true; | |
232 | break; | |
233 | } | |
00e5200b SJ |
234 | } |
235 | } | |
236 | ||
237 | if ($isPseudoCountry) { | |
02c4b93a | 238 | return implode("\n", array_slice($textLines, 0, -1)); |
00e5200b | 239 | } |
4e7a3faa | 240 | return $text; |
00e5200b | 241 | } |
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242 | } |
243 | ||
244 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: | |
245 | ?> |