X-Git-Url: https://git.toastfreeware.priv.at/philipp/winterrodeln/mediawiki_extensions/wrmap.git/blobdiff_plain/251504e732e484abfb3fecff9210223950aceae7..6ddb8a8bf303a33e167ba31922b989043b57e744:/wrmap.body.php diff --git a/wrmap.body.php b/wrmap.body.php index 60fbf18..ccb5b80 100644 --- a/wrmap.body.php +++ b/wrmap.body.php @@ -1,52 +1,252 @@ tag +// DOM helper classes +// ------------------ + +// The following two classes are "duplicated" from the wrreport extension to keep them separate. +// Put improvements in both classes. +class WrMapDOMDocument extends DOMDocument { + function __construct() { + parent::__construct('1.0', 'utf-8'); + $this->registerNodeClass('DOMElement', 'WrMapDOMElement'); + } + + /// Creates and adds the element with the given tag name and returns it. + /// Additionally, it calls setAttribute($key, $value) for every entry + /// in $attributes. + function appendElement($tagName, $attributes=array()) { + $child = $this->appendChild($this->createElement($tagName)); + foreach ($attributes as $key => $value) $child->setAttribute($key, $value); + return $child; + } + +} +class WrMapDOMElement extends DOMElement { + + /// Creates and adds the element with the given tag name and returns it + /// Additionally, it calls setAttribute($key, $value) for every entry + /// in $attributes. + function appendElement($tagName, $attributes=array()) { + $child = $this->appendChild($this->ownerDocument->createElement($tagName)); + foreach ($attributes as $key => $value) $child->setAttribute($key, $value); + return $child; + } + + /// Adds any UTF-8 string as content of the element - it will be escaped. + function appendText($text) { + return $this->appendChild($this->ownerDocument->createTextNode($text)); + } + + // Appends a CDATASections to the element. This can be used to include + // raw (unparsed) HTML to the DOM tree as it is necessary because + // $parser->recursiveTagParse does not always escape & characters. + // (see https://bugzilla.wikimedia.org/show_bug.cgi?id=55526 ) + // Workaround: Use a CDATA section. When serializing with $doc->saveHTML, + // the is returned as ... . + // However, we end up having unescaped & in the output due to this bug in recursiveTagParse. + function appendCDATA($data) { + return $this->appendChild($this->ownerDocument->createCDATASection($data)); + } +} + + +// gets coordinates and returns an array of lon/lat coordinate pairs, e.g. +// 47.12 N 11.87 E +// 47.13 N 11.70 E +// -> +// array(array(11.87, 47.12), array(11.70, 47.13)) +function geo_to_coordinates($input) { + $matches = array(); + $num_matches = preg_match_all('/\s*(\d+\.?\d*)\s*N?\s+(\d+\.?\d*)\s*E?\s*/', $input, $matches); + $result = array(); + for ($i=0; $i!=$num_matches; ++$i) { + $result[] = array(floatval($matches[2][$i]), floatval($matches[1][$i])); + } + if (implode($matches[0]) != $input) throw new Exception('Falsches Koordinatenformat: ' . $input); + return $result; +} + + +// convert sledruns to geojson (http://www.geojson.org/geojson-spec.html) +// Returns an array of features +function sledruns_to_json_features() { + $json_features = array(); // result + $dbr = wfGetDB(DB_SLAVE); + $res = $dbr->select(array('wrsledruncache', 'wrreportcache'), array('wrsledruncache.page_title', 'position_latitude', 'position_longitude', 'date_report', '`condition`'), array('show_in_overview', 'not under_construction'), __METHOD__, array(), array('wrreportcache' => array('left outer join', 'wrsledruncache.page_id=wrreportcache.page_id'))); + while ($sledrun = $dbr->fetchRow($res)) { + $lat = $sledrun['position_latitude']; + $lon = $sledrun['position_longitude']; + if (is_null($lat) || is_null($lon)) continue; + $lat = floatval($lat); + $lon = floatval($lon); + $title = Title::newFromText($sledrun['page_title']); + $properties = array('type' => 'sledrun', 'name' => $title->getText(), 'wiki' => $title->getLocalUrl()); + if (!is_null($sledrun['date_report'])) $properties['date_report'] = $sledrun['date_report']; + if (!is_null($sledrun['condition'])) $properties['condition'] = intval($sledrun['condition']); + $json_feature = array( + 'type' => 'feature', + 'geometry' => array( + 'type' => 'Point', + 'coordinates' => array($lon, $lat) + ), + 'properties' => $properties + ); + $json_features[] = $json_feature; + } + $dbr->freeResult($res); + return $json_features; +} + + +// convert XML to geojson (http://www.geojson.org/geojson-spec.html) +// Returns an array of features +function xml_to_json_features($input) { + libxml_use_internal_errors(true); // without that, we get PHP Warnings if the $input is not well-formed + $xml = new SimpleXMLElement($input); // input + $whitespace = (string) $xml; // everything between and that's not a sub-element + if (strlen($whitespace) > 0 && !ctype_space($whitespace)) { // there must not be anythin except sub-elements or whitespace + throw new Exception('Die Landkarte enthält folgenden ungültigen Text: "' . trim($xml) . '".'); + } + $json_features = array(); // output + $point_types = array('gasthaus', 'haltestelle', 'parkplatz', 'achtung', 'punkt'); + $line_types = array('rodelbahn', 'gehweg', 'alternative', 'lift', 'anfahrt', 'linie'); + foreach ($xml as $feature) { + $given_properties = array(); + foreach ($feature->attributes() as $key => $value) $given_properties[] = $key; + + // determine feature type + $is_point = in_array($feature->getName(), $point_types); + $is_line = in_array($feature->getName(), $line_types); + if (!$is_point && !$is_line) { + throw new Exception('Unbekanntes Element <' . $feature->getName() . '>. Erlaubt sind: <' . implode('>, <', array_merge($point_types, $line_types)) . '>.'); + } + + // point + if ($is_point) { + $properties = array('type' => $feature->getName()); + $allowed_properties = array('name', 'wiki'); + $wrong_properties = array_diff($given_properties, $allowed_properties); + if (count($wrong_properties) > 0) throw new Exception("Das Attribut '" . reset($wrong_properties) . "' ist nicht erlaubt bei <" . $feature->getName() . ">. Erlaubt sind: '" . implode("', '", $allowed_properties) . "'."); + foreach ($given_properties as $property) { + $propval = (string) $feature[$property]; + if ($property == 'wiki') { + $title = Title::newFromText($propval); + $propval = $title->getLocalUrl(); + } + $properties[$property] = $propval; + } + $coordinates = geo_to_coordinates($feature); + if (count($coordinates) != 1) throw new Exception('Das Element <' . $feature->getName() . '> muss genau ein Koordinatenpaar haben.'); + $json_feature = array( + 'type' => 'feature', + 'geometry' => array( + 'type' => 'Point', + 'coordinates' => reset($coordinates) + ), + 'properties' => $properties + ); + $json_features[] = $json_feature; + } + // line + if ($is_line) { + $properties = array('type' => $feature->getName()); + $allowed_properties = array('farbe', 'dicke'); + $wrong_properties = array_diff($given_properties, $allowed_properties); + if (count($wrong_properties) > 0) throw new Exception("Das Attribut '" . reset($wrong_properties) . "' ist nicht erlaubt bei <" . $feature->getName() . ">. Erlaubt sind: '" . implode("', '", $allowed_properties) . "'."); + if (isset($feature['farbe'])) { + $color = (string) $feature['farbe']; // e.g. #a200b7 + if (preg_match('/^#[0-9a-f]{6}$/i', $color) != 1) + throw new Exception('Die Farbangabe der Linie hat ein falsches Format. Sie muss z.B. so aussehen: #a200b7.'); + $properties['strokeColor'] = $color; + } + if (isset($feature['dicke'])) { + $stroke_width = (int) $feature['dicke']; // e.g. 6 + if (((string) $stroke_width) !== (string) $feature['dicke']) + throw new Exception('Die Angabe der Liniendicke hat ein falsches Format. Sie muss eine ganze Zahl wie z.B. 6 sein.'); + $properties['strokeWidth'] = $stroke_width; + } + $json_feature = array( + 'type' => 'feature', + 'geometry' => array( + 'type' => 'LineString', + 'coordinates' => geo_to_coordinates($feature) + ), + 'properties' => $properties + ); + $json_features[] = $json_feature; + } + } + return $json_features; +} + + + +class WrBaseMap { + /// Renders the tag and the tag. + /// This class would be the only class needed but as the function render() toes not provide an argument + /// telling which tag name called the function, a trick with two inherited classes has to be used. /// @param $content string - the content of the tag /// @param $args array - the array of attribute name/value pairs for the tag /// @param $parser Parser - the MW Parser object for the current page /// /// @return string - the html for rendering the map public static function render($content, $args, $parser, $frame) { - // Get center and zoom level from $args - if (isset($args['lat'])) $latitude = floatval($args['lat']); else $latitude = 47.267648; // latitude as float value - if (isset($args['lon'])) $longitude = floatval($args['lon']); else $longitude = 11.404655; // longitude as float value - if (isset($args['zoom'])) $zoom = intval($args['zoom']); else $zoom = 10; // Google Zoom Level - $latitude_s = sprintf('%.6F', $latitude); - $longitude_s = sprintf('%.6F', $longitude); - - // Query database - $dbr = wfGetDB(DB_SLAVE); - $res = $dbr->select(array('wrsledruncache', 'wrreportcache'), array('wrsledruncache.page_title', 'position_latitude', 'position_longitude', 'date_report', '`condition`'), array('show_in_overview', 'not under_construction'), __METHOD__, array(), array('wrreportcache' => array('left outer join', 'wrsledruncache.page_id=wrreportcache.page_id'))); - $sledruns = array(); - while ($sledrun = $dbr->fetchRow($res)) $sledruns[] = $sledrun; - $dbr->freeResult($res); - + // Unfortunately, $tagname is no argument of this function, therefore we have to use a trick with derived classes. + $tagname = strtolower(get_called_class()); // either wrmap or wrgmap + assert(in_array($tagname, array('wrmap', 'wrgmap'))); + $parserOutput = $parser->getOutput(); $parserOutput->addHeadItem('', 'googlemaps'); $parserOutput->addModules('ext.wrmap'); - + + // append all sledruns as icon + $json_features = array(); + $show_sledruns = ($tagname == 'wrgmap'); + if ($show_sledruns) { + $json_features = array_merge($json_features, sledruns_to_json_features()); + } + + try { + // map properties + $properties = array(); + if (isset($args['lat'])) $properties['lat'] = (float) $args['lat']; // latitude as float value + if (isset($args['lon'])) $properties['lon'] = (float) $args['lon']; // longitude as float value + if (isset($args['zoom'])) $properties['zoom'] = (int) $args['zoom']; // zoom as int value + if (isset($args['width'])) $properties['width'] = (int) $args['width']; // width as int value + if (isset($args['height'])) $properties['height'] = (int) $args['height']; // height as int value + + // append all elements in the XML + $json_features = array_merge($json_features, xml_to_json_features('' . $content . '')); + } catch (Exception $e) { + $doc = new WrMapDOMDocument(); + $doc->appendElement('div', array('class' => 'error'))->appendText('Fehler beim Parsen der Landkarte: ' . $e->getMessage()); + return array($doc->saveHTML($doc->firstChild), 'markerType' => 'nowiki'); + } + + // create final geojson + $json = array( + 'type' => 'FeatureCollection', + 'features' => $json_features, + 'properties' => $properties + ); + $json_string = json_encode($json); + // Create
element where the map is placed in global $wgExtensionAssetsPath; - $output = "
\n"; - foreach ($sledruns as $sledrun) { - $lat = $sledrun['position_latitude']; - $lon = $sledrun['position_longitude']; - if (!$lat || !$lon) continue; - $title = Title::newFromText($sledrun['page_title']); - $title_text = htmlspecialchars($title->getText()); - $title_url = htmlspecialchars($title->getLocalUrl()); - $output .= "

appendElement('div', array('class' => 'wrmap', 'style' => 'border-style:none;', 'data-img-path' => "$wgExtensionAssetsPath/wrmap/openlayers/img/"))->appendText($json_string); + return array($doc->saveHTML($doc->firstChild), 'markerType' => 'nowiki'); } +} + +// tag +class WrMap extends WrBaseMap { } +// tag +class WrGMap extends WrBaseMap { +} + ?>