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| 1 | <?php |
| 2 | |
| 3 | namespace GeoData; |
| 4 | |
| 5 | use Language; |
| 6 | use MWException; |
| 7 | use Parser; |
| 8 | use ParserOutput; |
| 9 | use PPFrame; |
| 10 | use PPNode; |
| 11 | use Status; |
| 12 | |
| 13 | /** |
| 14 | * Handler for the #coordinates parser function |
| 15 | */ |
| 16 | class CoordinatesParserFunction { |
| 17 | /** |
| 18 | * @var Parser used for processing the current coordinates() call |
| 19 | */ |
| 20 | private $parser; |
| 21 | |
| 22 | /** |
| 23 | * @var ParserOutput |
| 24 | */ |
| 25 | private $output; |
| 26 | |
| 27 | /** @var (string|true)[] */ |
| 28 | private $named = []; |
| 29 | /** @var string[] */ |
| 30 | private $unnamed = []; |
| 31 | |
| 32 | /** @var Globe */ |
| 33 | private $globe; |
| 34 | |
| 35 | /** |
| 36 | * #coordinates parser function callback |
| 37 | * |
| 38 | * @param Parser $parser |
| 39 | * @param PPFrame $frame |
| 40 | * @param PPNode[] $args |
| 41 | * @throws MWException |
| 42 | * @return mixed |
| 43 | */ |
| 44 | public function coordinates( Parser $parser, PPFrame $frame, array $args ) { |
| 45 | $this->parser = $parser; |
| 46 | $this->output = $parser->getOutput(); |
| 47 | |
| 48 | $this->unnamed = []; |
| 49 | $this->named = []; |
| 50 | $this->parseArgs( $frame, $args ); |
| 51 | $this->processArgs(); |
| 52 | $status = $this->parseCoordinates( $this->unnamed, $this->globe ); |
| 53 | if ( $status->isGood() ) { |
| 54 | $coord = $status->value; |
| 55 | $status = $this->applyTagArgs( $coord ); |
| 56 | if ( $status->isGood() ) { |
| 57 | $status = $this->applyCoord( $coord ); |
| 58 | if ( $status->isGood() ) { |
| 59 | return ''; |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | $parser->addTrackingCategory( 'geodata-broken-tags-category' ); |
| 65 | $errorText = $this->errorText( $status ); |
| 66 | if ( $errorText === '' ) { |
| 67 | // Error that doesn't require a message, |
| 68 | return ''; |
| 69 | } |
| 70 | |
| 71 | return [ "<span class=\"error\">{$errorText}</span>", 'noparse' => false ]; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * @return Language Current parsing language |
| 76 | */ |
| 77 | private function getLanguage() { |
| 78 | return $this->parser->getContentLanguage(); |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Parses parser function input |
| 83 | * @param PPFrame $frame |
| 84 | * @param PPNode[] $args |
| 85 | */ |
| 86 | private function parseArgs( $frame, $args ) { |
| 87 | $first = trim( $frame->expand( array_shift( $args ) ) ); |
| 88 | $this->addArg( $first ); |
| 89 | foreach ( $args as $arg ) { |
| 90 | $bits = $arg->splitArg(); |
| 91 | $value = trim( $frame->expand( $bits['value'] ) ); |
| 92 | if ( $bits['index'] === '' ) { |
| 93 | $this->named[trim( $frame->expand( $bits['name'] ) )] = $value; |
| 94 | } else { |
| 95 | $this->addArg( $value ); |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Add an unnamed parameter to the list, turining it into a named one if needed |
| 102 | * @param string $value Parameter |
| 103 | */ |
| 104 | private function addArg( $value ) { |
| 105 | $primary = $this->parser->getMagicWordFactory()->get( 'primary' ); |
| 106 | if ( $primary->match( $value ) ) { |
| 107 | $this->named['primary'] = true; |
| 108 | } elseif ( preg_match( '/\S+?:\S*?([ _]+\S+?:\S*?)*/', $value ) ) { |
| 109 | $this->named['geohack'] = $value; |
| 110 | } elseif ( $value != '' ) { |
| 111 | $this->unnamed[] = $value; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Applies a coordinate to parser output |
| 117 | * |
| 118 | * @param Coord $coord |
| 119 | * @return Status whether save went OK |
| 120 | */ |
| 121 | private function applyCoord( Coord $coord ) { |
| 122 | global $wgMaxCoordinatesPerPage; |
| 123 | |
| 124 | $geoData = CoordinatesOutput::getOrBuildFromParserOutput( $this->output ); |
| 125 | if ( $wgMaxCoordinatesPerPage >= 0 && $geoData->getCount() >= $wgMaxCoordinatesPerPage ) { |
| 126 | if ( $geoData->limitExceeded ) { |
| 127 | $geoData->setToParserOutput( $this->output ); |
| 128 | return Status::newFatal( '' ); |
| 129 | } |
| 130 | $geoData->limitExceeded = true; |
| 131 | $geoData->setToParserOutput( $this->output ); |
| 132 | return Status::newFatal( 'geodata-limit-exceeded', |
| 133 | $this->getLanguage()->formatNum( $wgMaxCoordinatesPerPage ) |
| 134 | ); |
| 135 | } |
| 136 | if ( $coord->primary ) { |
| 137 | if ( $geoData->hasPrimary() ) { |
| 138 | $geoData->setToParserOutput( $this->output ); |
| 139 | return Status::newFatal( 'geodata-multiple-primary' ); |
| 140 | } else { |
| 141 | $geoData->addPrimary( $coord ); |
| 142 | } |
| 143 | } else { |
| 144 | $geoData->addSecondary( $coord ); |
| 145 | } |
| 146 | $geoData->setToParserOutput( $this->output ); |
| 147 | return Status::newGood(); |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Merges parameters with decoded GeoHack data, sets default globe |
| 152 | */ |
| 153 | private function processArgs() { |
| 154 | global $wgDefaultGlobe; |
| 155 | // fear not of overwriting the stuff we've just received from the geohack param, |
| 156 | // it has minimum precedence |
| 157 | if ( isset( $this->named['geohack'] ) ) { |
| 158 | $this->named = array_merge( |
| 159 | $this->parseGeoHackArgs( $this->named['geohack'] ), $this->named |
| 160 | ); |
| 161 | } |
| 162 | $globe = ( isset( $this->named['globe'] ) && $this->named['globe'] ) |
| 163 | ? $this->getLanguage()->lc( $this->named['globe'] ) |
| 164 | : $wgDefaultGlobe; |
| 165 | |
| 166 | $this->globe = new Globe( $globe ); |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @param Coord $coord |
| 171 | * @return Status |
| 172 | */ |
| 173 | private function applyTagArgs( Coord $coord ) { |
| 174 | global $wgTypeToDim, $wgDefaultDim, $wgGeoDataWarningLevel; |
| 175 | $args = $this->named; |
| 176 | $coord->primary = isset( $args['primary'] ); |
| 177 | if ( !$this->globe->isKnown() ) { |
| 178 | switch ( $wgGeoDataWarningLevel['unknown globe'] ) { |
| 179 | case 'fail': |
| 180 | return Status::newFatal( 'geodata-bad-globe', $coord->globe ); |
| 181 | case 'warn': |
| 182 | $this->parser->addTrackingCategory( 'geodata-unknown-globe-category' ); |
| 183 | break; |
| 184 | } |
| 185 | } |
| 186 | $coord->dim = $wgDefaultDim; |
| 187 | if ( isset( $args['type'] ) ) { |
| 188 | $coord->type = mb_strtolower( preg_replace( '/\(.*?\).*$/', '', $args['type'] ) ); |
| 189 | if ( isset( $wgTypeToDim[$coord->type] ) ) { |
| 190 | $coord->dim = $wgTypeToDim[$coord->type]; |
| 191 | } else { |
| 192 | switch ( $wgGeoDataWarningLevel['unknown type'] ) { |
| 193 | case 'fail': |
| 194 | return Status::newFatal( 'geodata-bad-type', $coord->type ); |
| 195 | case 'warn': |
| 196 | $this->parser->addTrackingCategory( 'geodata-unknown-type-category' ); |
| 197 | break; |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | if ( isset( $args['scale'] ) && is_numeric( $args['scale'] ) && $args['scale'] > 0 ) { |
| 202 | $coord->dim = intval( (int)$args['scale'] / 10 ); |
| 203 | } |
| 204 | if ( isset( $args['dim'] ) ) { |
| 205 | $dim = $this->parseDim( $args['dim'] ); |
| 206 | if ( $dim !== false ) { |
| 207 | $coord->dim = intval( $dim ); |
| 208 | } |
| 209 | } |
| 210 | $coord->name = $args['name'] ?? null; |
| 211 | if ( isset( $args['region'] ) ) { |
| 212 | $code = strtoupper( $args['region'] ); |
| 213 | if ( preg_match( '/^([A-Z]{2})(?:-([A-Z0-9]{1,3}))?$/', $code, $m ) ) { |
| 214 | $coord->country = $m[1]; |
| 215 | $coord->region = $m[2] ?? null; |
| 216 | } else { |
| 217 | if ( $wgGeoDataWarningLevel['invalid region'] == 'fail' ) { |
| 218 | return Status::newFatal( 'geodata-bad-region', $args['region'] ); |
| 219 | } elseif ( $wgGeoDataWarningLevel['invalid region'] == 'warn' ) { |
| 220 | $this->parser->addTrackingCategory( 'geodata-unknown-region-category' ); |
| 221 | } |
| 222 | } |
| 223 | } |
| 224 | return Status::newGood(); |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * @param string $str |
| 229 | * @return string[] |
| 230 | */ |
| 231 | private function parseGeoHackArgs( $str ) { |
| 232 | $result = []; |
| 233 | // per GeoHack docs, spaces and underscores are equivalent |
| 234 | $str = str_replace( '_', ' ', $str ); |
| 235 | foreach ( explode( ' ', $str ) as $arg ) { |
| 236 | $keyVal = explode( ':', $arg, 2 ); |
| 237 | if ( isset( $keyVal[1] ) ) { |
| 238 | $result[$keyVal[0]] = $keyVal[1]; |
| 239 | } |
| 240 | } |
| 241 | return $result; |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * @param string|int $str |
| 246 | * @return string|int|false |
| 247 | */ |
| 248 | private function parseDim( $str ) { |
| 249 | if ( is_numeric( $str ) ) { |
| 250 | return $str > 0 ? $str : false; |
| 251 | } |
| 252 | if ( !preg_match( '/^(\d+)(km|m)$/i', $str, $m ) ) { |
| 253 | return false; |
| 254 | } |
| 255 | if ( strtolower( $m[2] ) == 'km' ) { |
| 256 | return (int)$m[1] * 1000; |
| 257 | } |
| 258 | return $m[1]; |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Returns wikitext of status error message in content language |
| 263 | * |
| 264 | * @param Status $s |
| 265 | * @return string |
| 266 | */ |
| 267 | private function errorText( Status $s ) { |
| 268 | $errors = array_merge( $s->getErrorsArray(), $s->getWarningsArray() ); |
| 269 | if ( $errors === [] ) { |
| 270 | return ''; |
| 271 | } |
| 272 | $err = $errors[0]; |
| 273 | $message = array_shift( $err ); |
| 274 | if ( $message === '' ) { |
| 275 | return ''; |
| 276 | } |
| 277 | return wfMessage( $message )->params( $err )->inContentLanguage()->plain(); |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Parses coordinates |
| 282 | * See https://en.wikipedia.org/wiki/Template:Coord for sample inputs |
| 283 | * |
| 284 | * @param string[] $parts Array of coordinate components |
| 285 | * @param Globe $globe Globe these coordinates belong to |
| 286 | * @return Status Operation status, in case of success its value is a Coord object |
| 287 | */ |
| 288 | private function parseCoordinates( $parts, Globe $globe ) { |
| 289 | $latSuffixes = [ 'N' => 1, 'S' => -1 ]; |
| 290 | $lonSuffixes = [ 'E' => $globe->getEastSign(), 'W' => -$globe->getEastSign() ]; |
| 291 | |
| 292 | $count = count( $parts ); |
| 293 | if ( !is_array( $parts ) || $count < 2 || $count > 8 || ( $count % 2 ) ) { |
| 294 | return Status::newFatal( 'geodata-bad-input' ); |
| 295 | } |
| 296 | list( $latArr, $lonArr ) = array_chunk( $parts, $count / 2 ); |
| 297 | |
| 298 | $lat = $this->parseOneCoord( $latArr, -90, 90, $latSuffixes ); |
| 299 | if ( $lat === false ) { |
| 300 | return Status::newFatal( 'geodata-bad-latitude' ); |
| 301 | } |
| 302 | |
| 303 | $lon = $this->parseOneCoord( $lonArr, |
| 304 | $globe->getMinLongitude(), |
| 305 | $globe->getMaxLongitude(), |
| 306 | $lonSuffixes |
| 307 | ); |
| 308 | if ( $lon === false ) { |
| 309 | return Status::newFatal( 'geodata-bad-longitude' ); |
| 310 | } |
| 311 | return Status::newGood( new Coord( (float)$lat, (float)$lon, $globe->getName() ) ); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * @param string[] $parts |
| 316 | * @param float $min |
| 317 | * @param float $max |
| 318 | * @param int[] $suffixes |
| 319 | * @return float|false |
| 320 | */ |
| 321 | private function parseOneCoord( $parts, $min, $max, $suffixes ) { |
| 322 | $count = count( $parts ); |
| 323 | $multiplier = 1; |
| 324 | $value = 0; |
| 325 | $alreadyFractional = false; |
| 326 | |
| 327 | $currentMin = $min; |
| 328 | $currentMax = $max; |
| 329 | |
| 330 | $language = $this->getLanguage(); |
| 331 | for ( $i = 0; $i < $count; $i++ ) { |
| 332 | $part = $parts[$i]; |
| 333 | if ( $i > 0 && $i == $count - 1 ) { |
| 334 | $suffix = self::parseSuffix( $part, $suffixes ); |
| 335 | if ( $suffix ) { |
| 336 | if ( $value < 0 ) { |
| 337 | // "-60°S sounds weird, doesn't it? |
| 338 | return false; |
| 339 | } |
| 340 | $value *= $suffix; |
| 341 | break; |
| 342 | } elseif ( $i == 3 ) { |
| 343 | return false; |
| 344 | } |
| 345 | } |
| 346 | // 20° 15.5' 20" is wrong |
| 347 | if ( $alreadyFractional && $part ) { |
| 348 | return false; |
| 349 | } |
| 350 | if ( !is_numeric( $part ) ) { |
| 351 | $part = $language->parseFormattedNumber( $part ); |
| 352 | } |
| 353 | |
| 354 | if ( !is_numeric( $part ) |
| 355 | || $part < $currentMin |
| 356 | || $part > $currentMax ) { |
| 357 | return false; |
| 358 | } |
| 359 | // Use these limits in the next iteration |
| 360 | $currentMin = 0; |
| 361 | $currentMax = 59.99999999; |
| 362 | |
| 363 | $alreadyFractional = $part != intval( $part ); |
| 364 | $value += (float)$part * $multiplier * Math::sign( $value ); |
| 365 | $multiplier /= 60; |
| 366 | } |
| 367 | if ( $min == 0 && $value < 0 ) { |
| 368 | $value = $max + $value; |
| 369 | } |
| 370 | if ( $value < $min || $value > $max ) { |
| 371 | return false; |
| 372 | } |
| 373 | return (float)$value; |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * Parses coordinate suffix such as N, S, E or W |
| 378 | * |
| 379 | * @param string $str String to test |
| 380 | * @param int[] $suffixes |
| 381 | * @return int Sign modifier or 0 if not a suffix |
| 382 | */ |
| 383 | private function parseSuffix( $str, array $suffixes ) { |
| 384 | $str = $this->getLanguage()->uc( trim( $str ) ); |
| 385 | return $suffixes[$str] ?? 0; |
| 386 | } |
| 387 | } |