2009-10-23 04:44:36 +09:00
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<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Plugin to convert string locations to Geonames IDs and vice versa
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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/**
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* Plugin to convert string locations to Geonames IDs and vice versa
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*
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* This handles most of the events that Location class emits. It uses
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* the geonames.org Web service to convert names like 'Montreal, Quebec, Canada'
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* into IDs and lat/lon pairs.
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*
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* @category Plugin
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*
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* @seeAlso Location
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*/
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class GeonamesPlugin extends Plugin
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{
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2009-11-18 09:56:43 +09:00
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const LOCATION_NS = 1;
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2009-10-23 04:44:36 +09:00
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2009-12-05 05:30:43 +09:00
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public $host = 'ws.geonames.org';
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public $username = null;
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public $token = null;
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2009-12-05 06:25:05 +09:00
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public $expiry = 7776000; // 90-day expiry
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2010-04-07 07:14:28 +09:00
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public $timeout = 2; // Web service timeout in seconds.
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public $timeoutWindow = 60; // Further lookups in this process will be disabled for N seconds after a timeout.
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2010-03-31 04:19:25 +09:00
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public $cachePrefix = null; // Optional shared memcache prefix override
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// to share lookups between local instances.
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2009-12-05 05:30:43 +09:00
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2010-04-07 07:14:28 +09:00
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protected $lastTimeout = null; // timestamp of last web service timeout
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2009-10-23 04:44:36 +09:00
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/**
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* convert a name into a Location object
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*
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* @param string $name Name to convert
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* @param string $language ISO code for anguage the name is in
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* @param Location &$location Location object (may be null)
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*
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* @return boolean whether to continue (results in $location)
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*/
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function onLocationFromName($name, $language, &$location)
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{
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2009-11-21 00:58:28 +09:00
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$loc = $this->getCache(array('name' => $name,
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'language' => $language));
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2010-01-31 02:40:11 +09:00
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if ($loc !== false) {
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2009-11-21 00:58:28 +09:00
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$location = $loc;
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return false;
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}
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2009-12-24 05:09:11 +09:00
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try {
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$geonames = $this->getGeonames('search',
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array('maxRows' => 1,
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'q' => $name,
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'lang' => $language,
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'type' => 'xml'));
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} catch (Exception $e) {
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$this->log(LOG_WARNING, "Error for $name: " . $e->getMessage());
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2009-12-24 02:26:43 +09:00
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return true;
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}
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2009-10-23 04:44:36 +09:00
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2010-01-31 02:40:11 +09:00
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if (count($geonames) == 0) {
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// no results
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$this->setCache(array('name' => $name,
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'language' => $language),
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null);
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return true;
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}
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2009-12-24 05:09:11 +09:00
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$n = $geonames[0];
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2009-11-21 00:58:28 +09:00
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2009-12-24 02:26:43 +09:00
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$location = new Location();
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2010-01-31 02:40:11 +09:00
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$location->lat = $this->canonical($n->lat);
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$location->lon = $this->canonical($n->lng);
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2009-12-24 05:09:11 +09:00
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$location->names[$language] = (string)$n->name;
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$location->location_id = (string)$n->geonameId;
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2009-12-24 02:26:43 +09:00
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$location->location_ns = self::LOCATION_NS;
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$this->setCache(array('name' => $name,
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'language' => $language),
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$location);
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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// handled, don't continue processing!
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return false;
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2009-10-23 04:44:36 +09:00
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}
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/**
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* convert an id into a Location object
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*
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* @param string $id Name to convert
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* @param string $ns Name to convert
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* @param string $language ISO code for language for results
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* @param Location &$location Location object (may be null)
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*
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* @return boolean whether to continue (results in $location)
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*/
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function onLocationFromId($id, $ns, $language, &$location)
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{
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2009-11-18 09:56:43 +09:00
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if ($ns != self::LOCATION_NS) {
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2009-10-23 04:44:36 +09:00
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// It's not one of our IDs... keep processing
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return true;
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}
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2009-11-21 00:58:28 +09:00
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$loc = $this->getCache(array('id' => $id));
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2010-01-31 02:40:11 +09:00
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if ($loc !== false) {
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2009-11-21 00:58:28 +09:00
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$location = $loc;
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return false;
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}
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2009-12-24 05:09:11 +09:00
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try {
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$geonames = $this->getGeonames('hierarchy',
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array('geonameId' => $id,
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'lang' => $language));
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} catch (Exception $e) {
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$this->log(LOG_WARNING, "Error for ID $id: " . $e->getMessage());
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2009-12-24 02:26:43 +09:00
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return false;
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}
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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$parts = array();
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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foreach ($geonames as $level) {
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2009-12-24 02:26:43 +09:00
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if (in_array($level->fcode, array('PCLI', 'ADM1', 'PPL'))) {
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2009-12-24 05:09:11 +09:00
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$parts[] = (string)$level->name;
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2009-12-24 02:26:43 +09:00
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}
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}
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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$last = $geonames[count($geonames)-1];
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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if (!in_array($level->fcode, array('PCLI', 'ADM1', 'PPL'))) {
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2009-12-24 05:09:11 +09:00
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$parts[] = (string)$last->name;
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2009-12-24 02:26:43 +09:00
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}
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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$location = new Location();
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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$location->location_id = (string)$last->geonameId;
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2009-12-24 02:26:43 +09:00
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$location->location_ns = self::LOCATION_NS;
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2010-01-31 02:40:11 +09:00
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$location->lat = $this->canonical($last->lat);
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$location->lon = $this->canonical($last->lng);
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2009-12-24 02:26:43 +09:00
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$location->names[$language] = implode(', ', array_reverse($parts));
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2009-11-21 00:58:28 +09:00
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2009-12-24 05:09:11 +09:00
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$this->setCache(array('id' => (string)$last->geonameId),
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2009-12-24 02:26:43 +09:00
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$location);
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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// We're responsible for this namespace; nobody else
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2009-10-23 04:44:36 +09:00
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// can resolve it
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return false;
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}
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/**
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* convert a lat/lon pair into a Location object
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*
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* Given a lat/lon, we try to find a Location that's around
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* it or nearby. We prefer populated places (cities, towns, villages).
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*
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* @param string $lat Latitude
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* @param string $lon Longitude
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* @param string $language ISO code for language for results
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* @param Location &$location Location object (may be null)
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*
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* @return boolean whether to continue (results in $location)
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*/
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function onLocationFromLatLon($lat, $lon, $language, &$location)
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{
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2010-01-31 02:40:11 +09:00
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// Make sure they're canonical
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$lat = $this->canonical($lat);
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$lon = $this->canonical($lon);
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2009-12-05 06:25:05 +09:00
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2009-11-21 00:58:28 +09:00
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$loc = $this->getCache(array('lat' => $lat,
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'lon' => $lon));
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2010-01-31 02:40:11 +09:00
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if ($loc !== false) {
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2009-11-21 00:58:28 +09:00
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$location = $loc;
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return false;
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}
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2009-12-24 05:09:11 +09:00
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try {
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$geonames = $this->getGeonames('findNearbyPlaceName',
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array('lat' => $lat,
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'lng' => $lon,
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'lang' => $language));
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} catch (Exception $e) {
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$this->log(LOG_WARNING, "Error for coords $lat, $lon: " . $e->getMessage());
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2009-12-24 02:26:43 +09:00
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return true;
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}
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2009-10-23 04:44:36 +09:00
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2010-01-31 02:40:11 +09:00
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if (count($geonames) == 0) {
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// no results
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$this->setCache(array('lat' => $lat,
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'lon' => $lon),
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null);
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return true;
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}
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2009-12-24 05:09:11 +09:00
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$n = $geonames[0];
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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$parts = array();
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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$location = new Location();
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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$parts[] = (string)$n->name;
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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if (!empty($n->adminName1)) {
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2009-12-24 05:09:11 +09:00
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$parts[] = (string)$n->adminName1;
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2009-12-24 02:26:43 +09:00
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}
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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if (!empty($n->countryName)) {
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2009-12-24 05:09:11 +09:00
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$parts[] = (string)$n->countryName;
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2009-12-24 02:26:43 +09:00
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}
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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$location->location_id = (string)$n->geonameId;
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2009-12-24 02:26:43 +09:00
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$location->location_ns = self::LOCATION_NS;
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2010-01-31 02:40:11 +09:00
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$location->lat = $this->canonical($n->lat);
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$location->lon = $this->canonical($n->lng);
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2009-11-21 00:58:28 +09:00
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2009-12-24 02:26:43 +09:00
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$location->names[$language] = implode(', ', $parts);
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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$this->setCache(array('lat' => $lat,
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'lon' => $lon),
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$location);
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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// Success! We handled it, so no further processing
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2009-10-23 04:44:36 +09:00
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2009-12-24 02:26:43 +09:00
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return false;
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2009-10-23 04:44:36 +09:00
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}
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/**
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* Human-readable name for a location
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*
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* Given a location, we try to retrieve a human-readable name
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* in the target language.
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*
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* @param Location $location Location to get the name for
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* @param string $language ISO code for language to find name in
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* @param string &$name Place to put the name
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*
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* @return boolean whether to continue
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*/
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function onLocationNameLanguage($location, $language, &$name)
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{
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2009-11-18 09:56:43 +09:00
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if ($location->location_ns != self::LOCATION_NS) {
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2009-10-23 04:44:36 +09:00
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// It's not one of our IDs... keep processing
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return true;
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}
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2009-12-24 05:09:11 +09:00
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$id = $location->location_id;
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$n = $this->getCache(array('id' => $id,
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2009-11-21 00:58:28 +09:00
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'language' => $language));
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2010-01-31 02:40:11 +09:00
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if ($n !== false) {
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2009-11-21 00:58:28 +09:00
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$name = $n;
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return false;
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}
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2009-12-24 05:09:11 +09:00
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try {
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$geonames = $this->getGeonames('hierarchy',
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array('geonameId' => $id,
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'lang' => $language));
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} catch (Exception $e) {
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$this->log(LOG_WARNING, "Error for ID $id: " . $e->getMessage());
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2009-12-24 02:26:43 +09:00
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return false;
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}
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2009-10-23 04:44:36 +09:00
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2010-01-31 02:40:11 +09:00
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if (count($geonames) == 0) {
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$this->setCache(array('id' => $id,
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'language' => $language),
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null);
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return false;
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}
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2009-12-24 02:26:43 +09:00
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$parts = array();
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2009-10-23 04:44:36 +09:00
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2009-12-24 05:09:11 +09:00
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|
|
foreach ($geonames as $level) {
|
2009-12-24 02:26:43 +09:00
|
|
|
if (in_array($level->fcode, array('PCLI', 'ADM1', 'PPL'))) {
|
2009-12-24 05:09:11 +09:00
|
|
|
$parts[] = (string)$level->name;
|
2009-12-24 02:26:43 +09:00
|
|
|
}
|
|
|
|
}
|
2009-10-23 04:44:36 +09:00
|
|
|
|
2009-12-24 05:09:11 +09:00
|
|
|
$last = $geonames[count($geonames)-1];
|
2009-10-23 04:44:36 +09:00
|
|
|
|
2009-12-24 02:26:43 +09:00
|
|
|
if (!in_array($level->fcode, array('PCLI', 'ADM1', 'PPL'))) {
|
2009-12-24 05:09:11 +09:00
|
|
|
$parts[] = (string)$last->name;
|
2009-12-24 02:26:43 +09:00
|
|
|
}
|
2009-10-23 04:44:36 +09:00
|
|
|
|
2009-12-24 02:26:43 +09:00
|
|
|
if (count($parts)) {
|
|
|
|
$name = implode(', ', array_reverse($parts));
|
2009-12-24 05:09:11 +09:00
|
|
|
$this->setCache(array('id' => $id,
|
2009-12-24 02:26:43 +09:00
|
|
|
'language' => $language),
|
|
|
|
$name);
|
2009-10-23 04:44:36 +09:00
|
|
|
}
|
|
|
|
|
2009-12-24 02:26:43 +09:00
|
|
|
return false;
|
2009-10-23 04:44:36 +09:00
|
|
|
}
|
2009-10-30 04:07:26 +09:00
|
|
|
|
|
|
|
/**
|
2009-12-24 05:09:11 +09:00
|
|
|
* Human-readable URL for a location
|
2009-10-30 04:07:26 +09:00
|
|
|
*
|
|
|
|
* Given a location, we try to retrieve a geonames.org URL.
|
|
|
|
*
|
|
|
|
* @param Location $location Location to get the url for
|
|
|
|
* @param string &$url Place to put the url
|
|
|
|
*
|
|
|
|
* @return boolean whether to continue
|
|
|
|
*/
|
|
|
|
|
|
|
|
function onLocationUrl($location, &$url)
|
|
|
|
{
|
2009-11-18 09:56:43 +09:00
|
|
|
if ($location->location_ns != self::LOCATION_NS) {
|
2009-10-30 04:07:26 +09:00
|
|
|
// It's not one of our IDs... keep processing
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
$url = 'http://www.geonames.org/' . $location->location_id;
|
|
|
|
|
2009-11-10 04:01:46 +09:00
|
|
|
// it's been filled, so don't process further.
|
2009-10-30 04:07:26 +09:00
|
|
|
return false;
|
|
|
|
}
|
2009-11-20 02:00:25 +09:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Machine-readable name for a location
|
|
|
|
*
|
|
|
|
* Given a location, we try to retrieve a geonames.org URL.
|
|
|
|
*
|
|
|
|
* @param Location $location Location to get the url for
|
|
|
|
* @param string &$url Place to put the url
|
|
|
|
*
|
|
|
|
* @return boolean whether to continue
|
|
|
|
*/
|
|
|
|
|
|
|
|
function onLocationRdfUrl($location, &$url)
|
|
|
|
{
|
|
|
|
if ($location->location_ns != self::LOCATION_NS) {
|
|
|
|
// It's not one of our IDs... keep processing
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2010-06-11 02:30:07 +09:00
|
|
|
$url = 'http://sws.geonames.org/' . $location->location_id . '/';
|
2009-11-20 02:00:25 +09:00
|
|
|
|
|
|
|
// it's been filled, so don't process further.
|
|
|
|
return false;
|
|
|
|
}
|
2009-11-21 00:58:28 +09:00
|
|
|
|
|
|
|
function getCache($attrs)
|
|
|
|
{
|
2010-09-06 22:56:45 +09:00
|
|
|
$c = Cache::instance();
|
2009-11-21 00:58:28 +09:00
|
|
|
|
2009-12-05 05:30:43 +09:00
|
|
|
if (empty($c)) {
|
2009-11-21 00:58:28 +09:00
|
|
|
return null;
|
|
|
|
}
|
|
|
|
|
2009-12-05 06:25:05 +09:00
|
|
|
$key = $this->cacheKey($attrs);
|
|
|
|
|
|
|
|
$value = $c->get($key);
|
|
|
|
|
|
|
|
return $value;
|
2009-11-21 00:58:28 +09:00
|
|
|
}
|
|
|
|
|
|
|
|
function setCache($attrs, $loc)
|
|
|
|
{
|
2010-09-06 22:56:45 +09:00
|
|
|
$c = Cache::instance();
|
2009-11-21 00:58:28 +09:00
|
|
|
|
2009-12-05 05:30:43 +09:00
|
|
|
if (empty($c)) {
|
2009-11-21 00:58:28 +09:00
|
|
|
return null;
|
|
|
|
}
|
|
|
|
|
2009-12-05 06:25:05 +09:00
|
|
|
$key = $this->cacheKey($attrs);
|
2009-11-21 00:58:28 +09:00
|
|
|
|
2009-12-05 06:25:05 +09:00
|
|
|
$result = $c->set($key, $loc, 0, time() + $this->expiry);
|
2009-11-21 00:58:28 +09:00
|
|
|
|
2009-12-05 06:25:05 +09:00
|
|
|
return $result;
|
2009-11-21 00:58:28 +09:00
|
|
|
}
|
|
|
|
|
|
|
|
function cacheKey($attrs)
|
|
|
|
{
|
2010-03-31 04:19:25 +09:00
|
|
|
$key = 'geonames:' .
|
|
|
|
implode(',', array_keys($attrs)) . ':'.
|
2010-09-06 23:03:51 +09:00
|
|
|
Cache::keyize(implode(',', array_values($attrs)));
|
2010-03-31 04:19:25 +09:00
|
|
|
if ($this->cachePrefix) {
|
|
|
|
return $this->cachePrefix . ':' . $key;
|
|
|
|
} else {
|
|
|
|
return common_cache_key($key);
|
|
|
|
}
|
2009-11-21 00:58:28 +09:00
|
|
|
}
|
2009-12-05 05:30:43 +09:00
|
|
|
|
|
|
|
function wsUrl($method, $params)
|
|
|
|
{
|
|
|
|
if (!empty($this->username)) {
|
|
|
|
$params['username'] = $this->username;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!empty($this->token)) {
|
|
|
|
$params['token'] = $this->token;
|
|
|
|
}
|
|
|
|
|
2009-12-24 05:16:22 +09:00
|
|
|
$str = http_build_query($params, null, '&');
|
2009-12-05 05:30:43 +09:00
|
|
|
|
|
|
|
return 'http://'.$this->host.'/'.$method.'?'.$str;
|
|
|
|
}
|
2009-12-24 05:09:11 +09:00
|
|
|
|
|
|
|
function getGeonames($method, $params)
|
|
|
|
{
|
2010-04-07 07:14:28 +09:00
|
|
|
if ($this->lastTimeout && (time() - $this->lastTimeout < $this->timeoutWindow)) {
|
|
|
|
throw new Exception("skipping due to recent web service timeout");
|
|
|
|
}
|
|
|
|
|
2009-12-24 05:09:11 +09:00
|
|
|
$client = HTTPClient::start();
|
2010-04-07 07:14:28 +09:00
|
|
|
$client->setConfig('connect_timeout', $this->timeout);
|
|
|
|
$client->setConfig('timeout', $this->timeout);
|
2009-12-24 05:09:11 +09:00
|
|
|
|
2010-04-07 07:14:28 +09:00
|
|
|
try {
|
|
|
|
$result = $client->get($this->wsUrl($method, $params));
|
|
|
|
} catch (Exception $e) {
|
|
|
|
common_log(LOG_ERR, __METHOD__ . ": " . $e->getMessage());
|
|
|
|
$this->lastTimeout = time();
|
|
|
|
throw $e;
|
|
|
|
}
|
2009-12-24 05:09:11 +09:00
|
|
|
|
|
|
|
if (!$result->isOk()) {
|
2010-04-09 02:11:52 +09:00
|
|
|
throw new Exception("HTTP error code " . $result->getStatus());
|
2009-12-24 05:09:11 +09:00
|
|
|
}
|
|
|
|
|
2010-01-31 02:40:11 +09:00
|
|
|
$body = $result->getBody();
|
|
|
|
|
|
|
|
if (empty($body)) {
|
|
|
|
throw new Exception("Empty HTTP body in response");
|
|
|
|
}
|
|
|
|
|
|
|
|
// This will throw an exception if the XML is mal-formed
|
|
|
|
|
|
|
|
$document = new SimpleXMLElement($body);
|
2009-12-24 05:09:11 +09:00
|
|
|
|
2010-01-31 02:40:11 +09:00
|
|
|
// No children, usually no results
|
|
|
|
|
|
|
|
$children = $document->children();
|
|
|
|
|
|
|
|
if (count($children) == 0) {
|
|
|
|
return array();
|
2009-12-24 05:09:11 +09:00
|
|
|
}
|
|
|
|
|
|
|
|
if (isset($document->status)) {
|
|
|
|
throw new Exception("Error #".$document->status['value']." ('".$document->status['message']."')");
|
|
|
|
}
|
|
|
|
|
2010-01-31 02:40:11 +09:00
|
|
|
// Array of elements, >0 elements
|
2009-12-24 05:09:11 +09:00
|
|
|
|
|
|
|
return $document->geoname;
|
|
|
|
}
|
2010-01-08 10:27:01 +09:00
|
|
|
|
|
|
|
function onPluginVersion(&$versions)
|
|
|
|
{
|
|
|
|
$versions[] = array('name' => 'Geonames',
|
|
|
|
'version' => STATUSNET_VERSION,
|
|
|
|
'author' => 'Evan Prodromou',
|
|
|
|
'homepage' => 'http://status.net/wiki/Plugin:Geonames',
|
|
|
|
'rawdescription' =>
|
|
|
|
_m('Uses <a href="http://geonames.org/">Geonames</a> service to get human-readable '.
|
|
|
|
'names for locations based on user-provided lat/long pairs.'));
|
|
|
|
return true;
|
|
|
|
}
|
2010-01-31 02:40:11 +09:00
|
|
|
|
|
|
|
function canonical($coord)
|
|
|
|
{
|
|
|
|
$coord = rtrim($coord, "0");
|
|
|
|
$coord = rtrim($coord, ".");
|
|
|
|
|
|
|
|
return $coord;
|
|
|
|
}
|
2009-10-23 04:44:36 +09:00
|
|
|
}
|