--- /dev/null
+<?php
+/**
+ * Reader for XMP data containing properties relevant to images.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Media
+ */
+
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
+use Wikimedia\ScopedCallback;
+
+/**
+ * Class for reading xmp data containing properties relevant to
+ * images, and spitting out an array that FormatMetadata accepts.
+ *
+ * Note, this is not meant to recognize every possible thing you can
+ * encode in XMP. It should recognize all the properties we want.
+ * For example it doesn't have support for structures with multiple
+ * nesting levels, as none of the properties we're supporting use that
+ * feature. If it comes across properties it doesn't recognize, it should
+ * ignore them.
+ *
+ * The public methods one would call in this class are
+ * - parse( $content )
+ * Reads in xmp content.
+ * Can potentially be called multiple times with partial data each time.
+ * - parseExtended( $content )
+ * Reads XMPExtended blocks (jpeg files only).
+ * - getResults
+ * Outputs a results array.
+ *
+ * Note XMP kind of looks like rdf. They are not the same thing - XMP is
+ * encoded as a specific subset of rdf. This class can read XMP. It cannot
+ * read rdf.
+ */
+class XMPReader implements LoggerAwareInterface {
+ /** @var array XMP item configuration array */
+ protected $items;
+
+ /** @var array Array to hold the current element (and previous element, and so on) */
+ private $curItem = [];
+
+ /** @var bool|string The structure name when processing nested structures. */
+ private $ancestorStruct = false;
+
+ /** @var bool|string Temporary holder for character data that appears in xmp doc. */
+ private $charContent = false;
+
+ /** @var array Stores the state the xmpreader is in (see MODE_FOO constants) */
+ private $mode = [];
+
+ /** @var array Array to hold results */
+ private $results = [];
+
+ /** @var bool If we're doing a seq or bag. */
+ private $processingArray = false;
+
+ /** @var bool|string Used for lang alts only */
+ private $itemLang = false;
+
+ /** @var resource A resource handle for the XML parser */
+ private $xmlParser;
+
+ /** @var bool|string Character set like 'UTF-8' */
+ private $charset = false;
+
+ /** @var int */
+ private $extendedXMPOffset = 0;
+
+ /** @var int Flag determining if the XMP is safe to parse **/
+ private $parsable = 0;
+
+ /** @var string Buffer of XML to parse **/
+ private $xmlParsableBuffer = '';
+
+ /**
+ * These are various mode constants.
+ * they are used to figure out what to do
+ * with an element when its encountered.
+ *
+ * For example, MODE_IGNORE is used when processing
+ * a property we're not interested in. So if a new
+ * element pops up when we're in that mode, we ignore it.
+ */
+ const MODE_INITIAL = 0;
+ const MODE_IGNORE = 1;
+ const MODE_LI = 2;
+ const MODE_LI_LANG = 3;
+ const MODE_QDESC = 4;
+
+ // The following MODE constants are also used in the
+ // $items array to denote what type of property the item is.
+ const MODE_SIMPLE = 10;
+ const MODE_STRUCT = 11; // structure (associative array)
+ const MODE_SEQ = 12; // ordered list
+ const MODE_BAG = 13; // unordered list
+ const MODE_LANG = 14;
+ const MODE_ALT = 15; // non-language alt. Currently not implemented, and not needed atm.
+ const MODE_BAGSTRUCT = 16; // A BAG of Structs.
+
+ const NS_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
+ const NS_XML = 'http://www.w3.org/XML/1998/namespace';
+
+ // States used while determining if XML is safe to parse
+ const PARSABLE_UNKNOWN = 0;
+ const PARSABLE_OK = 1;
+ const PARSABLE_BUFFERING = 2;
+ const PARSABLE_NO = 3;
+
+ /**
+ * @var LoggerInterface
+ */
+ private $logger;
+
+ /**
+ * Primary job is to initialize the XMLParser
+ * @param LoggerInterface|null $logger
+ */
+ function __construct( LoggerInterface $logger = null ) {
+ if ( !function_exists( 'xml_parser_create_ns' ) ) {
+ // this should already be checked by this point
+ throw new RuntimeException( 'XMP support requires XML Parser' );
+ }
+ if ( $logger ) {
+ $this->setLogger( $logger );
+ } else {
+ $this->setLogger( new NullLogger() );
+ }
+
+ $this->items = XMPInfo::getItems();
+
+ $this->resetXMLParser();
+ }
+
+ public function setLogger( LoggerInterface $logger ) {
+ $this->logger = $logger;
+ }
+
+ /**
+ * free the XML parser.
+ *
+ * @note It is unclear to me if we really need to do this ourselves
+ * or if php garbage collection will automatically free the xmlParser
+ * when it is no longer needed.
+ */
+ private function destroyXMLParser() {
+ if ( $this->xmlParser ) {
+ xml_parser_free( $this->xmlParser );
+ $this->xmlParser = null;
+ }
+ }
+
+ /**
+ * Main use is if a single item has multiple xmp documents describing it.
+ * For example in jpeg's with extendedXMP
+ */
+ private function resetXMLParser() {
+ $this->destroyXMLParser();
+
+ $this->xmlParser = xml_parser_create_ns( 'UTF-8', ' ' );
+ xml_parser_set_option( $this->xmlParser, XML_OPTION_CASE_FOLDING, 0 );
+ xml_parser_set_option( $this->xmlParser, XML_OPTION_SKIP_WHITE, 1 );
+
+ xml_set_element_handler( $this->xmlParser,
+ [ $this, 'startElement' ],
+ [ $this, 'endElement' ] );
+
+ xml_set_character_data_handler( $this->xmlParser, [ $this, 'char' ] );
+
+ $this->parsable = self::PARSABLE_UNKNOWN;
+ $this->xmlParsableBuffer = '';
+ }
+
+ /**
+ * Check if this instance supports using this class
+ * @return bool
+ */
+ public static function isSupported() {
+ return function_exists( 'xml_parser_create_ns' ) && class_exists( 'XMLReader' );
+ }
+
+ /** Get the result array. Do some post-processing before returning
+ * the array, and transform any metadata that is special-cased.
+ *
+ * @return array Array of results as an array of arrays suitable for
+ * FormatMetadata::getFormattedData().
+ */
+ public function getResults() {
+ // xmp-special is for metadata that affects how stuff
+ // is extracted. For example xmpNote:HasExtendedXMP.
+
+ // It is also used to handle photoshop:AuthorsPosition
+ // which is weird and really part of another property,
+ // see 2:85 in IPTC. See also pg 21 of IPTC4XMP standard.
+ // The location fields also use it.
+
+ $data = $this->results;
+
+ if ( isset( $data['xmp-special']['AuthorsPosition'] )
+ && is_string( $data['xmp-special']['AuthorsPosition'] )
+ && isset( $data['xmp-general']['Artist'][0] )
+ ) {
+ // Note, if there is more than one creator,
+ // this only applies to first. This also will
+ // only apply to the dc:Creator prop, not the
+ // exif:Artist prop.
+
+ $data['xmp-general']['Artist'][0] =
+ $data['xmp-special']['AuthorsPosition'] . ', '
+ . $data['xmp-general']['Artist'][0];
+ }
+
+ // Go through the LocationShown and LocationCreated
+ // changing it to the non-hierarchal form used by
+ // the other location fields.
+
+ if ( isset( $data['xmp-special']['LocationShown'][0] )
+ && is_array( $data['xmp-special']['LocationShown'][0] )
+ ) {
+ // the is_array is just paranoia. It should always
+ // be an array.
+ foreach ( $data['xmp-special']['LocationShown'] as $loc ) {
+ if ( !is_array( $loc ) ) {
+ // To avoid copying over the _type meta-fields.
+ continue;
+ }
+ foreach ( $loc as $field => $val ) {
+ $data['xmp-general'][$field . 'Dest'][] = $val;
+ }
+ }
+ }
+ if ( isset( $data['xmp-special']['LocationCreated'][0] )
+ && is_array( $data['xmp-special']['LocationCreated'][0] )
+ ) {
+ // the is_array is just paranoia. It should always
+ // be an array.
+ foreach ( $data['xmp-special']['LocationCreated'] as $loc ) {
+ if ( !is_array( $loc ) ) {
+ // To avoid copying over the _type meta-fields.
+ continue;
+ }
+ foreach ( $loc as $field => $val ) {
+ $data['xmp-general'][$field . 'Created'][] = $val;
+ }
+ }
+ }
+
+ // We don't want to return the special values, since they're
+ // special and not info to be stored about the file.
+ unset( $data['xmp-special'] );
+
+ // Convert GPSAltitude to negative if below sea level.
+ if ( isset( $data['xmp-exif']['GPSAltitudeRef'] )
+ && isset( $data['xmp-exif']['GPSAltitude'] )
+ ) {
+ // Must convert to a real before multiplying by -1
+ // XMPValidate guarantees there will always be a '/' in this value.
+ list( $nom, $denom ) = explode( '/', $data['xmp-exif']['GPSAltitude'] );
+ $data['xmp-exif']['GPSAltitude'] = $nom / $denom;
+
+ if ( $data['xmp-exif']['GPSAltitudeRef'] == '1' ) {
+ $data['xmp-exif']['GPSAltitude'] *= -1;
+ }
+ unset( $data['xmp-exif']['GPSAltitudeRef'] );
+ }
+
+ return $data;
+ }
+
+ /**
+ * Main function to call to parse XMP. Use getResults to
+ * get results.
+ *
+ * Also catches any errors during processing, writes them to
+ * debug log, blanks result array and returns false.
+ *
+ * @param string $content XMP data
+ * @param bool $allOfIt If this is all the data (true) or if its split up (false). Default true
+ * @throws RuntimeException
+ * @return bool Success.
+ */
+ public function parse( $content, $allOfIt = true ) {
+ if ( !$this->xmlParser ) {
+ $this->resetXMLParser();
+ }
+ try {
+
+ // detect encoding by looking for BOM which is supposed to be in processing instruction.
+ // see page 12 of http://www.adobe.com/devnet/xmp/pdfs/XMPSpecificationPart3.pdf
+ if ( !$this->charset ) {
+ $bom = [];
+ if ( preg_match( '/\xEF\xBB\xBF|\xFE\xFF|\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\xFF\xFE/',
+ $content, $bom )
+ ) {
+ switch ( $bom[0] ) {
+ case "\xFE\xFF":
+ $this->charset = 'UTF-16BE';
+ break;
+ case "\xFF\xFE":
+ $this->charset = 'UTF-16LE';
+ break;
+ case "\x00\x00\xFE\xFF":
+ $this->charset = 'UTF-32BE';
+ break;
+ case "\xFF\xFE\x00\x00":
+ $this->charset = 'UTF-32LE';
+ break;
+ case "\xEF\xBB\xBF":
+ $this->charset = 'UTF-8';
+ break;
+ default:
+ // this should be impossible to get to
+ throw new RuntimeException( "Invalid BOM" );
+ }
+ } else {
+ // standard specifically says, if no bom assume utf-8
+ $this->charset = 'UTF-8';
+ }
+ }
+ if ( $this->charset !== 'UTF-8' ) {
+ // don't convert if already utf-8
+ MediaWiki\suppressWarnings();
+ $content = iconv( $this->charset, 'UTF-8//IGNORE', $content );
+ MediaWiki\restoreWarnings();
+ }
+
+ // Ensure the XMP block does not have an xml doctype declaration, which
+ // could declare entities unsafe to parse with xml_parse (T85848/T71210).
+ if ( $this->parsable !== self::PARSABLE_OK ) {
+ if ( $this->parsable === self::PARSABLE_NO ) {
+ throw new RuntimeException( 'Unsafe doctype declaration in XML.' );
+ }
+
+ $content = $this->xmlParsableBuffer . $content;
+ if ( !$this->checkParseSafety( $content ) ) {
+ if ( !$allOfIt && $this->parsable !== self::PARSABLE_NO ) {
+ // parse wasn't Unsuccessful yet, so return true
+ // in this case.
+ return true;
+ }
+ $msg = ( $this->parsable === self::PARSABLE_NO ) ?
+ 'Unsafe doctype declaration in XML.' :
+ 'No root element found in XML.';
+ throw new RuntimeException( $msg );
+ }
+ }
+
+ $ok = xml_parse( $this->xmlParser, $content, $allOfIt );
+ if ( !$ok ) {
+ $code = xml_get_error_code( $this->xmlParser );
+ $error = xml_error_string( $code );
+ $line = xml_get_current_line_number( $this->xmlParser );
+ $col = xml_get_current_column_number( $this->xmlParser );
+ $offset = xml_get_current_byte_index( $this->xmlParser );
+
+ $this->logger->warning(
+ '{method} : Error reading XMP content: {error} ' .
+ '(line: {line} column: {column} byte offset: {offset})',
+ [
+ 'method' => __METHOD__,
+ 'error_code' => $code,
+ 'error' => $error,
+ 'line' => $line,
+ 'column' => $col,
+ 'offset' => $offset,
+ 'content' => $content,
+ ] );
+ $this->results = []; // blank if error.
+ $this->destroyXMLParser();
+ return false;
+ }
+ } catch ( Exception $e ) {
+ $this->logger->warning(
+ '{method} Exception caught while parsing: ' . $e->getMessage(),
+ [
+ 'method' => __METHOD__,
+ 'exception' => $e,
+ 'content' => $content,
+ ]
+ );
+ $this->results = [];
+ return false;
+ }
+ if ( $allOfIt ) {
+ $this->destroyXMLParser();
+ }
+
+ return true;
+ }
+
+ /** Entry point for XMPExtended blocks in jpeg files
+ *
+ * @todo In serious need of testing
+ * @see http://www.adobe.ge/devnet/xmp/pdfs/XMPSpecificationPart3.pdf XMP spec part 3 page 20
+ * @param string $content XMPExtended block minus the namespace signature
+ * @return bool If it succeeded.
+ */
+ public function parseExtended( $content ) {
+ // @todo FIXME: This is untested. Hard to find example files
+ // or programs that make such files..
+ $guid = substr( $content, 0, 32 );
+ if ( !isset( $this->results['xmp-special']['HasExtendedXMP'] )
+ || $this->results['xmp-special']['HasExtendedXMP'] !== $guid
+ ) {
+ $this->logger->info( __METHOD__ .
+ " Ignoring XMPExtended block due to wrong guid (guid= '$guid')" );
+
+ return false;
+ }
+ $len = unpack( 'Nlength/Noffset', substr( $content, 32, 8 ) );
+
+ if ( !$len ||
+ $len['length'] < 4 ||
+ $len['offset'] < 0 ||
+ $len['offset'] > $len['length']
+ ) {
+ $this->logger->info(
+ __METHOD__ . 'Error reading extended XMP block, invalid length or offset.'
+ );
+
+ return false;
+ }
+
+ // we're not very robust here. we should accept it in the wrong order.
+ // To quote the XMP standard:
+ // "A JPEG writer should write the ExtendedXMP marker segments in order,
+ // immediately following the StandardXMP. However, the JPEG standard
+ // does not require preservation of marker segment order. A robust JPEG
+ // reader should tolerate the marker segments in any order."
+ // On the other hand, the probability that an image will have more than
+ // 128k of metadata is rather low... so the probability that it will have
+ // > 128k, and be in the wrong order is very low...
+
+ if ( $len['offset'] !== $this->extendedXMPOffset ) {
+ $this->logger->info( __METHOD__ . 'Ignoring XMPExtended block due to wrong order. (Offset was '
+ . $len['offset'] . ' but expected ' . $this->extendedXMPOffset . ')' );
+
+ return false;
+ }
+
+ if ( $len['offset'] === 0 ) {
+ // if we're starting the extended block, we've probably already
+ // done the XMPStandard block, so reset.
+ $this->resetXMLParser();
+ }
+
+ $this->extendedXMPOffset += $len['length'];
+
+ $actualContent = substr( $content, 40 );
+
+ if ( $this->extendedXMPOffset === strlen( $actualContent ) ) {
+ $atEnd = true;
+ } else {
+ $atEnd = false;
+ }
+
+ $this->logger->debug( __METHOD__ . 'Parsing a XMPExtended block' );
+
+ return $this->parse( $actualContent, $atEnd );
+ }
+
+ /**
+ * Character data handler
+ * Called whenever character data is found in the xmp document.
+ *
+ * does nothing if we're in MODE_IGNORE or if the data is whitespace
+ * throws an error if we're not in MODE_SIMPLE (as we're not allowed to have character
+ * data in the other modes).
+ *
+ * As an example, this happens when we encounter XMP like:
+ * <exif:DigitalZoomRatio>0/10</exif:DigitalZoomRatio>
+ * and are processing the 0/10 bit.
+ *
+ * @param resource $parser XMLParser reference to the xml parser
+ * @param string $data Character data
+ * @throws RuntimeException On invalid data
+ */
+ function char( $parser, $data ) {
+ $data = trim( $data );
+ if ( trim( $data ) === "" ) {
+ return;
+ }
+
+ if ( !isset( $this->mode[0] ) ) {
+ throw new RuntimeException( 'Unexpected character data before first rdf:Description element' );
+ }
+
+ if ( $this->mode[0] === self::MODE_IGNORE ) {
+ return;
+ }
+
+ if ( $this->mode[0] !== self::MODE_SIMPLE
+ && $this->mode[0] !== self::MODE_QDESC
+ ) {
+ throw new RuntimeException( 'character data where not expected. (mode ' . $this->mode[0] . ')' );
+ }
+
+ // to check, how does this handle w.s.
+ if ( $this->charContent === false ) {
+ $this->charContent = $data;
+ } else {
+ $this->charContent .= $data;
+ }
+ }
+
+ /**
+ * Check if a block of XML is safe to pass to xml_parse, i.e. doesn't
+ * contain a doctype declaration which could contain a dos attack if we
+ * parse it and expand internal entities (T85848).
+ *
+ * @param string $content xml string to check for parse safety
+ * @return bool true if the xml is safe to parse, false otherwise
+ */
+ private function checkParseSafety( $content ) {
+ $reader = new XMLReader();
+ $result = null;
+
+ // For XMLReader to parse incomplete/invalid XML, it has to be open()'ed
+ // instead of using XML().
+ $reader->open(
+ 'data://text/plain,' . urlencode( $content ),
+ null,
+ LIBXML_NOERROR | LIBXML_NOWARNING | LIBXML_NONET
+ );
+
+ $oldDisable = libxml_disable_entity_loader( true );
+ /** @noinspection PhpUnusedLocalVariableInspection */
+ $reset = new ScopedCallback(
+ 'libxml_disable_entity_loader',
+ [ $oldDisable ]
+ );
+ $reader->setParserProperty( XMLReader::SUBST_ENTITIES, false );
+
+ // Even with LIBXML_NOWARNING set, XMLReader::read gives a warning
+ // when parsing truncated XML, which causes unit tests to fail.
+ MediaWiki\suppressWarnings();
+ while ( $reader->read() ) {
+ if ( $reader->nodeType === XMLReader::ELEMENT ) {
+ // Reached the first element without hitting a doctype declaration
+ $this->parsable = self::PARSABLE_OK;
+ $result = true;
+ break;
+ }
+ if ( $reader->nodeType === XMLReader::DOC_TYPE ) {
+ $this->parsable = self::PARSABLE_NO;
+ $result = false;
+ break;
+ }
+ }
+ MediaWiki\restoreWarnings();
+
+ if ( !is_null( $result ) ) {
+ return $result;
+ }
+
+ // Reached the end of the parsable xml without finding an element
+ // or doctype. Buffer and try again.
+ $this->parsable = self::PARSABLE_BUFFERING;
+ $this->xmlParsableBuffer = $content;
+ return false;
+ }
+
+ /** When we hit a closing element in MODE_IGNORE
+ * Check to see if this is the element we started to ignore,
+ * in which case we get out of MODE_IGNORE
+ *
+ * @param string $elm Namespace of element followed by a space and then tag name of element.
+ */
+ private function endElementModeIgnore( $elm ) {
+ if ( $this->curItem[0] === $elm ) {
+ array_shift( $this->curItem );
+ array_shift( $this->mode );
+ }
+ }
+
+ /**
+ * Hit a closing element when in MODE_SIMPLE.
+ * This generally means that we finished processing a
+ * property value, and now have to save the result to the
+ * results array
+ *
+ * For example, when processing:
+ * <exif:DigitalZoomRatio>0/10</exif:DigitalZoomRatio>
+ * this deals with when we hit </exif:DigitalZoomRatio>.
+ *
+ * Or it could be if we hit the end element of a property
+ * of a compound data structure (like a member of an array).
+ *
+ * @param string $elm Namespace, space, and tag name.
+ */
+ private function endElementModeSimple( $elm ) {
+ if ( $this->charContent !== false ) {
+ if ( $this->processingArray ) {
+ // if we're processing an array, use the original element
+ // name instead of rdf:li.
+ list( $ns, $tag ) = explode( ' ', $this->curItem[0], 2 );
+ } else {
+ list( $ns, $tag ) = explode( ' ', $elm, 2 );
+ }
+ $this->saveValue( $ns, $tag, $this->charContent );
+
+ $this->charContent = false; // reset
+ }
+ array_shift( $this->curItem );
+ array_shift( $this->mode );
+ }
+
+ /**
+ * Hit a closing element in MODE_STRUCT, MODE_SEQ, MODE_BAG
+ * generally means we've finished processing a nested structure.
+ * resets some internal variables to indicate that.
+ *
+ * Note this means we hit the closing element not the "</rdf:Seq>".
+ *
+ * @par For example, when processing:
+ * @code{,xml}
+ * <exif:ISOSpeedRatings> <rdf:Seq> <rdf:li>64</rdf:li>
+ * </rdf:Seq> </exif:ISOSpeedRatings>
+ * @endcode
+ *
+ * This method is called when we hit the "</exif:ISOSpeedRatings>" tag.
+ *
+ * @param string $elm Namespace . space . tag name.
+ * @throws RuntimeException
+ */
+ private function endElementNested( $elm ) {
+ /* cur item must be the same as $elm, unless if in MODE_STRUCT
+ * in which case it could also be rdf:Description */
+ if ( $this->curItem[0] !== $elm
+ && !( $elm === self::NS_RDF . ' Description'
+ && $this->mode[0] === self::MODE_STRUCT )
+ ) {
+ throw new RuntimeException( "nesting mismatch. got a </$elm> but expected a </" .
+ $this->curItem[0] . '>' );
+ }
+
+ // Validate structures.
+ list( $ns, $tag ) = explode( ' ', $elm, 2 );
+ if ( isset( $this->items[$ns][$tag]['validate'] ) ) {
+ $info =& $this->items[$ns][$tag];
+ $finalName = isset( $info['map_name'] )
+ ? $info['map_name'] : $tag;
+
+ if ( is_array( $info['validate'] ) ) {
+ $validate = $info['validate'];
+ } else {
+ $validator = new XMPValidate( $this->logger );
+ $validate = [ $validator, $info['validate'] ];
+ }
+
+ if ( !isset( $this->results['xmp-' . $info['map_group']][$finalName] ) ) {
+ // This can happen if all the members of the struct failed validation.
+ $this->logger->debug( __METHOD__ . " <$ns:$tag> has no valid members." );
+ } elseif ( is_callable( $validate ) ) {
+ $val =& $this->results['xmp-' . $info['map_group']][$finalName];
+ call_user_func_array( $validate, [ $info, &$val, false ] );
+ if ( is_null( $val ) ) {
+ // the idea being the validation function will unset the variable if
+ // its invalid.
+ $this->logger->info( __METHOD__ . " <$ns:$tag> failed validation." );
+ unset( $this->results['xmp-' . $info['map_group']][$finalName] );
+ }
+ } else {
+ $this->logger->warning( __METHOD__ . " Validation function for $finalName ("
+ . $validate[0] . '::' . $validate[1] . '()) is not callable.' );
+ }
+ }
+
+ array_shift( $this->curItem );
+ array_shift( $this->mode );
+ $this->ancestorStruct = false;
+ $this->processingArray = false;
+ $this->itemLang = false;
+ }
+
+ /**
+ * Hit a closing element in MODE_LI (either rdf:Seq, or rdf:Bag )
+ * Add information about what type of element this is.
+ *
+ * Note we still have to hit the outer "</property>"
+ *
+ * @par For example, when processing:
+ * @code{,xml}
+ * <exif:ISOSpeedRatings> <rdf:Seq> <rdf:li>64</rdf:li>
+ * </rdf:Seq> </exif:ISOSpeedRatings>
+ * @endcode
+ *
+ * This method is called when we hit the "</rdf:Seq>".
+ * (For comparison, we call endElementModeSimple when we
+ * hit the "</rdf:li>")
+ *
+ * @param string $elm Namespace . ' ' . element name
+ * @throws RuntimeException
+ */
+ private function endElementModeLi( $elm ) {
+ list( $ns, $tag ) = explode( ' ', $this->curItem[0], 2 );
+ $info = $this->items[$ns][$tag];
+ $finalName = isset( $info['map_name'] )
+ ? $info['map_name'] : $tag;
+
+ array_shift( $this->mode );
+
+ if ( !isset( $this->results['xmp-' . $info['map_group']][$finalName] ) ) {
+ $this->logger->debug( __METHOD__ . " Empty compund element $finalName." );
+
+ return;
+ }
+
+ if ( $elm === self::NS_RDF . ' Seq' ) {
+ $this->results['xmp-' . $info['map_group']][$finalName]['_type'] = 'ol';
+ } elseif ( $elm === self::NS_RDF . ' Bag' ) {
+ $this->results['xmp-' . $info['map_group']][$finalName]['_type'] = 'ul';
+ } elseif ( $elm === self::NS_RDF . ' Alt' ) {
+ // extra if needed as you could theoretically have a non-language alt.
+ if ( $info['mode'] === self::MODE_LANG ) {
+ $this->results['xmp-' . $info['map_group']][$finalName]['_type'] = 'lang';
+ }
+ } else {
+ throw new RuntimeException(
+ __METHOD__ . " expected </rdf:seq> or </rdf:bag> but instead got $elm."
+ );
+ }
+ }
+
+ /**
+ * End element while in MODE_QDESC
+ * mostly when ending an element when we have a simple value
+ * that has qualifiers.
+ *
+ * Qualifiers aren't all that common, and we don't do anything
+ * with them.
+ *
+ * @param string $elm Namespace and element
+ */
+ private function endElementModeQDesc( $elm ) {
+ if ( $elm === self::NS_RDF . ' value' ) {
+ list( $ns, $tag ) = explode( ' ', $this->curItem[0], 2 );
+ $this->saveValue( $ns, $tag, $this->charContent );
+
+ return;
+ } else {
+ array_shift( $this->mode );
+ array_shift( $this->curItem );
+ }
+ }
+
+ /**
+ * Handler for hitting a closing element.
+ *
+ * generally just calls a helper function depending on what
+ * mode we're in.
+ *
+ * Ignores the outer wrapping elements that are optional in
+ * xmp and have no meaning.
+ *
+ * @param resource $parser
+ * @param string $elm Namespace . ' ' . element name
+ * @throws RuntimeException
+ */
+ function endElement( $parser, $elm ) {
+ if ( $elm === ( self::NS_RDF . ' RDF' )
+ || $elm === 'adobe:ns:meta/ xmpmeta'
+ || $elm === 'adobe:ns:meta/ xapmeta'
+ ) {
+ // ignore these.
+ return;
+ }
+
+ if ( $elm === self::NS_RDF . ' type' ) {
+ // these aren't really supported properly yet.
+ // However, it appears they almost never used.
+ $this->logger->info( __METHOD__ . ' encountered <rdf:type>' );
+ }
+
+ if ( strpos( $elm, ' ' ) === false ) {
+ // This probably shouldn't happen.
+ // However, there is a bug in an adobe product
+ // that forgets the namespace on some things.
+ // (Luckily they are unimportant things).
+ $this->logger->info( __METHOD__ . " Encountered </$elm> which has no namespace. Skipping." );
+
+ return;
+ }
+
+ if ( count( $this->mode[0] ) === 0 ) {
+ // This should never ever happen and means
+ // there is a pretty major bug in this class.
+ throw new RuntimeException( 'Encountered end element with no mode' );
+ }
+
+ if ( count( $this->curItem ) == 0 && $this->mode[0] !== self::MODE_INITIAL ) {
+ // just to be paranoid. Should always have a curItem, except for initially
+ // (aka during MODE_INITAL).
+ throw new RuntimeException( "Hit end element </$elm> but no curItem" );
+ }
+
+ switch ( $this->mode[0] ) {
+ case self::MODE_IGNORE:
+ $this->endElementModeIgnore( $elm );
+ break;
+ case self::MODE_SIMPLE:
+ $this->endElementModeSimple( $elm );
+ break;
+ case self::MODE_STRUCT:
+ case self::MODE_SEQ:
+ case self::MODE_BAG:
+ case self::MODE_LANG:
+ case self::MODE_BAGSTRUCT:
+ $this->endElementNested( $elm );
+ break;
+ case self::MODE_INITIAL:
+ if ( $elm === self::NS_RDF . ' Description' ) {
+ array_shift( $this->mode );
+ } else {
+ throw new RuntimeException( 'Element ended unexpectedly while in MODE_INITIAL' );
+ }
+ break;
+ case self::MODE_LI:
+ case self::MODE_LI_LANG:
+ $this->endElementModeLi( $elm );
+ break;
+ case self::MODE_QDESC:
+ $this->endElementModeQDesc( $elm );
+ break;
+ default:
+ $this->logger->warning( __METHOD__ . " no mode (elm = $elm)" );
+ break;
+ }
+ }
+
+ /**
+ * Hit an opening element while in MODE_IGNORE
+ *
+ * XMP is extensible, so ignore any tag we don't understand.
+ *
+ * Mostly ignores, unless we encounter the element that we are ignoring.
+ * in which case we add it to the item stack, so we can ignore things
+ * that are nested, correctly.
+ *
+ * @param string $elm Namespace . ' ' . tag name
+ */
+ private function startElementModeIgnore( $elm ) {
+ if ( $elm === $this->curItem[0] ) {
+ array_unshift( $this->curItem, $elm );
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ }
+ }
+
+ /**
+ * Start element in MODE_BAG (unordered array)
+ * this should always be <rdf:Bag>
+ *
+ * @param string $elm Namespace . ' ' . tag
+ * @throws RuntimeException If we have an element that's not <rdf:Bag>
+ */
+ private function startElementModeBag( $elm ) {
+ if ( $elm === self::NS_RDF . ' Bag' ) {
+ array_unshift( $this->mode, self::MODE_LI );
+ } else {
+ throw new RuntimeException( "Expected <rdf:Bag> but got $elm." );
+ }
+ }
+
+ /**
+ * Start element in MODE_SEQ (ordered array)
+ * this should always be <rdf:Seq>
+ *
+ * @param string $elm Namespace . ' ' . tag
+ * @throws RuntimeException If we have an element that's not <rdf:Seq>
+ */
+ private function startElementModeSeq( $elm ) {
+ if ( $elm === self::NS_RDF . ' Seq' ) {
+ array_unshift( $this->mode, self::MODE_LI );
+ } elseif ( $elm === self::NS_RDF . ' Bag' ) {
+ # T29105
+ $this->logger->info( __METHOD__ . ' Expected an rdf:Seq, but got an rdf:Bag. Pretending'
+ . ' it is a Seq, since some buggy software is known to screw this up.' );
+ array_unshift( $this->mode, self::MODE_LI );
+ } else {
+ throw new RuntimeException( "Expected <rdf:Seq> but got $elm." );
+ }
+ }
+
+ /**
+ * Start element in MODE_LANG (language alternative)
+ * this should always be <rdf:Alt>
+ *
+ * This tag tends to be used for metadata like describe this
+ * picture, which can be translated into multiple languages.
+ *
+ * XMP supports non-linguistic alternative selections,
+ * which are really only used for thumbnails, which
+ * we don't care about.
+ *
+ * @param string $elm Namespace . ' ' . tag
+ * @throws RuntimeException If we have an element that's not <rdf:Alt>
+ */
+ private function startElementModeLang( $elm ) {
+ if ( $elm === self::NS_RDF . ' Alt' ) {
+ array_unshift( $this->mode, self::MODE_LI_LANG );
+ } else {
+ throw new RuntimeException( "Expected <rdf:Seq> but got $elm." );
+ }
+ }
+
+ /**
+ * Handle an opening element when in MODE_SIMPLE
+ *
+ * This should not happen often. This is for if a simple element
+ * already opened has a child element. Could happen for a
+ * qualified element.
+ *
+ * For example:
+ * <exif:DigitalZoomRatio><rdf:Description><rdf:value>0/10</rdf:value>
+ * <foo:someQualifier>Bar</foo:someQualifier> </rdf:Description>
+ * </exif:DigitalZoomRatio>
+ *
+ * This method is called when processing the <rdf:Description> element
+ *
+ * @param string $elm Namespace and tag names separated by space.
+ * @param array $attribs Attributes of the element.
+ * @throws RuntimeException
+ */
+ private function startElementModeSimple( $elm, $attribs ) {
+ if ( $elm === self::NS_RDF . ' Description' ) {
+ // If this value has qualifiers
+ array_unshift( $this->mode, self::MODE_QDESC );
+ array_unshift( $this->curItem, $this->curItem[0] );
+
+ if ( isset( $attribs[self::NS_RDF . ' value'] ) ) {
+ list( $ns, $tag ) = explode( ' ', $this->curItem[0], 2 );
+ $this->saveValue( $ns, $tag, $attribs[self::NS_RDF . ' value'] );
+ }
+ } elseif ( $elm === self::NS_RDF . ' value' ) {
+ // This should not be here.
+ throw new RuntimeException( __METHOD__ . ' Encountered <rdf:value> where it was unexpected.' );
+ } else {
+ // something else we don't recognize, like a qualifier maybe.
+ $this->logger->info( __METHOD__ .
+ " Encountered element <$elm> where only expecting character data as value of " .
+ $this->curItem[0] );
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ array_unshift( $this->curItem, $elm );
+ }
+ }
+
+ /**
+ * Start an element when in MODE_QDESC.
+ * This generally happens when a simple element has an inner
+ * rdf:Description to hold qualifier elements.
+ *
+ * For example in:
+ * <exif:DigitalZoomRatio><rdf:Description><rdf:value>0/10</rdf:value>
+ * <foo:someQualifier>Bar</foo:someQualifier> </rdf:Description>
+ * </exif:DigitalZoomRatio>
+ * Called when processing the <rdf:value> or <foo:someQualifier>.
+ *
+ * @param string $elm Namespace and tag name separated by a space.
+ */
+ private function startElementModeQDesc( $elm ) {
+ if ( $elm === self::NS_RDF . ' value' ) {
+ return; // do nothing
+ } else {
+ // otherwise its a qualifier, which we ignore
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ array_unshift( $this->curItem, $elm );
+ }
+ }
+
+ /**
+ * Starting an element when in MODE_INITIAL
+ * This usually happens when we hit an element inside
+ * the outer rdf:Description
+ *
+ * This is generally where most properties start.
+ *
+ * @param string $ns Namespace
+ * @param string $tag Tag name (without namespace prefix)
+ * @param array $attribs Array of attributes
+ * @throws RuntimeException
+ */
+ private function startElementModeInitial( $ns, $tag, $attribs ) {
+ if ( $ns !== self::NS_RDF ) {
+ if ( isset( $this->items[$ns][$tag] ) ) {
+ if ( isset( $this->items[$ns][$tag]['structPart'] ) ) {
+ // If this element is supposed to appear only as
+ // a child of a structure, but appears here (not as
+ // a child of a struct), then something weird is
+ // happening, so ignore this element and its children.
+
+ $this->logger->warning( "Encountered <$ns:$tag> outside"
+ . " of its expected parent. Ignoring." );
+
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ array_unshift( $this->curItem, $ns . ' ' . $tag );
+
+ return;
+ }
+ $mode = $this->items[$ns][$tag]['mode'];
+ array_unshift( $this->mode, $mode );
+ array_unshift( $this->curItem, $ns . ' ' . $tag );
+ if ( $mode === self::MODE_STRUCT ) {
+ $this->ancestorStruct = isset( $this->items[$ns][$tag]['map_name'] )
+ ? $this->items[$ns][$tag]['map_name'] : $tag;
+ }
+ if ( $this->charContent !== false ) {
+ // Something weird.
+ // Should not happen in valid XMP.
+ throw new RuntimeException( 'tag nested in non-whitespace characters.' );
+ }
+ } else {
+ // This element is not on our list of allowed elements so ignore.
+ $this->logger->debug( __METHOD__ . " Ignoring unrecognized element <$ns:$tag>." );
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ array_unshift( $this->curItem, $ns . ' ' . $tag );
+
+ return;
+ }
+ }
+ // process attributes
+ $this->doAttribs( $attribs );
+ }
+
+ /**
+ * Hit an opening element when in a Struct (MODE_STRUCT)
+ * This is generally for fields of a compound property.
+ *
+ * Example of a struct (abbreviated; flash has more properties):
+ *
+ * <exif:Flash> <rdf:Description> <exif:Fired>True</exif:Fired>
+ * <exif:Mode>1</exif:Mode></rdf:Description></exif:Flash>
+ *
+ * or:
+ *
+ * <exif:Flash rdf:parseType='Resource'> <exif:Fired>True</exif:Fired>
+ * <exif:Mode>1</exif:Mode></exif:Flash>
+ *
+ * @param string $ns Namespace
+ * @param string $tag Tag name (no ns)
+ * @param array $attribs Array of attribs w/ values.
+ * @throws RuntimeException
+ */
+ private function startElementModeStruct( $ns, $tag, $attribs ) {
+ if ( $ns !== self::NS_RDF ) {
+ if ( isset( $this->items[$ns][$tag] ) ) {
+ if ( isset( $this->items[$ns][$this->ancestorStruct]['children'] )
+ && !isset( $this->items[$ns][$this->ancestorStruct]['children'][$tag] )
+ ) {
+ // This assumes that we don't have inter-namespace nesting
+ // which we don't in all the properties we're interested in.
+ throw new RuntimeException( " <$tag> appeared nested in <" . $this->ancestorStruct
+ . "> where it is not allowed." );
+ }
+ array_unshift( $this->mode, $this->items[$ns][$tag]['mode'] );
+ array_unshift( $this->curItem, $ns . ' ' . $tag );
+ if ( $this->charContent !== false ) {
+ // Something weird.
+ // Should not happen in valid XMP.
+ throw new RuntimeException( "tag <$tag> nested in non-whitespace characters (" .
+ $this->charContent . ")." );
+ }
+ } else {
+ array_unshift( $this->mode, self::MODE_IGNORE );
+ array_unshift( $this->curItem, $ns . ' ' . $tag );
+
+ return;
+ }
+ }
+
+ if ( $ns === self::NS_RDF && $tag === 'Description' ) {
+ $this->doAttribs( $attribs );
+ array_unshift( $this->mode, self::MODE_STRUCT );
+ array_unshift( $this->curItem, $this->curItem[0] );
+ }
+ }
+
+ /**
+ * opening element in MODE_LI
+ * process elements of arrays.
+ *
+ * Example:
+ * <exif:ISOSpeedRatings> <rdf:Seq> <rdf:li>64</rdf:li>
+ * </rdf:Seq> </exif:ISOSpeedRatings>
+ * This method is called when we hit the <rdf:li> element.
+ *
+ * @param string $elm Namespace . ' ' . tagname
+ * @param array $attribs Attributes. (needed for BAGSTRUCTS)
+ * @throws RuntimeException If gets a tag other than <rdf:li>
+ */
+ private function startElementModeLi( $elm, $attribs ) {
+ if ( ( $elm ) !== self::NS_RDF . ' li' ) {
+ throw new RuntimeException( "<rdf:li> expected but got $elm." );
+ }
+
+ if ( !isset( $this->mode[1] ) ) {
+ // This should never ever ever happen. Checking for it
+ // to be paranoid.
+ throw new RuntimeException( 'In mode Li, but no 2xPrevious mode!' );
+ }
+
+ if ( $this->mode[1] === self::MODE_BAGSTRUCT ) {
+ // This list item contains a compound (STRUCT) value.
+ array_unshift( $this->mode, self::MODE_STRUCT );
+ array_unshift( $this->curItem, $elm );
+ $this->processingArray = true;
+
+ if ( !isset( $this->curItem[1] ) ) {
+ // be paranoid.
+ throw new RuntimeException( 'Can not find parent of BAGSTRUCT.' );
+ }
+ list( $curNS, $curTag ) = explode( ' ', $this->curItem[1] );
+ $this->ancestorStruct = isset( $this->items[$curNS][$curTag]['map_name'] )
+ ? $this->items[$curNS][$curTag]['map_name'] : $curTag;
+
+ $this->doAttribs( $attribs );
+ } else {
+ // Normal BAG or SEQ containing simple values.
+ array_unshift( $this->mode, self::MODE_SIMPLE );
+ // need to add curItem[0] on again since one is for the specific item
+ // and one is for the entire group.
+ array_unshift( $this->curItem, $this->curItem[0] );
+ $this->processingArray = true;
+ }
+ }
+
+ /**
+ * Opening element in MODE_LI_LANG.
+ * process elements of language alternatives
+ *
+ * Example:
+ * <dc:title> <rdf:Alt> <rdf:li xml:lang="x-default">My house
+ * </rdf:li> </rdf:Alt> </dc:title>
+ *
+ * This method is called when we hit the <rdf:li> element.
+ *
+ * @param string $elm Namespace . ' ' . tag
+ * @param array $attribs Array of elements (most importantly xml:lang)
+ * @throws RuntimeException If gets a tag other than <rdf:li> or if no xml:lang
+ */
+ private function startElementModeLiLang( $elm, $attribs ) {
+ if ( $elm !== self::NS_RDF . ' li' ) {
+ throw new RuntimeException( __METHOD__ . " <rdf:li> expected but got $elm." );
+ }
+ if ( !isset( $attribs[self::NS_XML . ' lang'] )
+ || !preg_match( '/^[-A-Za-z0-9]{2,}$/D', $attribs[self::NS_XML . ' lang'] )
+ ) {
+ throw new RuntimeException( __METHOD__
+ . " <rdf:li> did not contain, or has invalid xml:lang attribute in lang alternative" );
+ }
+
+ // Lang is case-insensitive.
+ $this->itemLang = strtolower( $attribs[self::NS_XML . ' lang'] );
+
+ // need to add curItem[0] on again since one is for the specific item
+ // and one is for the entire group.
+ array_unshift( $this->curItem, $this->curItem[0] );
+ array_unshift( $this->mode, self::MODE_SIMPLE );
+ $this->processingArray = true;
+ }
+
+ /**
+ * Hits an opening element.
+ * Generally just calls a helper based on what MODE we're in.
+ * Also does some initial set up for the wrapper element
+ *
+ * @param resource $parser
+ * @param string $elm Namespace "<space>" element
+ * @param array $attribs Attribute name => value
+ * @throws RuntimeException
+ */
+ function startElement( $parser, $elm, $attribs ) {
+ if ( $elm === self::NS_RDF . ' RDF'
+ || $elm === 'adobe:ns:meta/ xmpmeta'
+ || $elm === 'adobe:ns:meta/ xapmeta'
+ ) {
+ /* ignore. */
+ return;
+ } elseif ( $elm === self::NS_RDF . ' Description' ) {
+ if ( count( $this->mode ) === 0 ) {
+ // outer rdf:desc
+ array_unshift( $this->mode, self::MODE_INITIAL );
+ }
+ } elseif ( $elm === self::NS_RDF . ' type' ) {
+ // This doesn't support rdf:type properly.
+ // In practise I have yet to see a file that
+ // uses this element, however it is mentioned
+ // on page 25 of part 1 of the xmp standard.
+ // Also it seems as if exiv2 and exiftool do not support
+ // this either (That or I misunderstand the standard)
+ $this->logger->info( __METHOD__ . ' Encountered <rdf:type> which isn\'t currently supported' );
+ }
+
+ if ( strpos( $elm, ' ' ) === false ) {
+ // This probably shouldn't happen.
+ $this->logger->info( __METHOD__ . " Encountered <$elm> which has no namespace. Skipping." );
+
+ return;
+ }
+
+ list( $ns, $tag ) = explode( ' ', $elm, 2 );
+
+ if ( count( $this->mode ) === 0 ) {
+ // This should not happen.
+ throw new RuntimeException( 'Error extracting XMP, '
+ . "encountered <$elm> with no mode" );
+ }
+
+ switch ( $this->mode[0] ) {
+ case self::MODE_IGNORE:
+ $this->startElementModeIgnore( $elm );
+ break;
+ case self::MODE_SIMPLE:
+ $this->startElementModeSimple( $elm, $attribs );
+ break;
+ case self::MODE_INITIAL:
+ $this->startElementModeInitial( $ns, $tag, $attribs );
+ break;
+ case self::MODE_STRUCT:
+ $this->startElementModeStruct( $ns, $tag, $attribs );
+ break;
+ case self::MODE_BAG:
+ case self::MODE_BAGSTRUCT:
+ $this->startElementModeBag( $elm );
+ break;
+ case self::MODE_SEQ:
+ $this->startElementModeSeq( $elm );
+ break;
+ case self::MODE_LANG:
+ $this->startElementModeLang( $elm );
+ break;
+ case self::MODE_LI_LANG:
+ $this->startElementModeLiLang( $elm, $attribs );
+ break;
+ case self::MODE_LI:
+ $this->startElementModeLi( $elm, $attribs );
+ break;
+ case self::MODE_QDESC:
+ $this->startElementModeQDesc( $elm );
+ break;
+ default:
+ throw new RuntimeException( 'StartElement in unknown mode: ' . $this->mode[0] );
+ }
+ }
+
+ // @codingStandardsIgnoreStart Generic.Files.LineLength
+ /**
+ * Process attributes.
+ * Simple values can be stored as either a tag or attribute
+ *
+ * Often the initial "<rdf:Description>" tag just has all the simple
+ * properties as attributes.
+ *
+ * @par Example:
+ * @code
+ * <rdf:Description rdf:about="" xmlns:exif="http://ns.adobe.com/exif/1.0/" exif:DigitalZoomRatio="0/10">
+ * @endcode
+ *
+ * @param array $attribs Array attribute=>value
+ * @throws RuntimeException
+ */
+ // @codingStandardsIgnoreEnd
+ private function doAttribs( $attribs ) {
+ // first check for rdf:parseType attribute, as that can change
+ // how the attributes are interperted.
+
+ if ( isset( $attribs[self::NS_RDF . ' parseType'] )
+ && $attribs[self::NS_RDF . ' parseType'] === 'Resource'
+ && $this->mode[0] === self::MODE_SIMPLE
+ ) {
+ // this is equivalent to having an inner rdf:Description
+ $this->mode[0] = self::MODE_QDESC;
+ }
+ foreach ( $attribs as $name => $val ) {
+ if ( strpos( $name, ' ' ) === false ) {
+ // This shouldn't happen, but so far some old software forgets namespace
+ // on rdf:about.
+ $this->logger->info( __METHOD__ . ' Encountered non-namespaced attribute: '
+ . " $name=\"$val\". Skipping. " );
+ continue;
+ }
+ list( $ns, $tag ) = explode( ' ', $name, 2 );
+ if ( $ns === self::NS_RDF ) {
+ if ( $tag === 'value' || $tag === 'resource' ) {
+ // resource is for url.
+ // value attribute is a weird way of just putting the contents.
+ $this->char( $this->xmlParser, $val );
+ }
+ } elseif ( isset( $this->items[$ns][$tag] ) ) {
+ if ( $this->mode[0] === self::MODE_SIMPLE ) {
+ throw new RuntimeException( __METHOD__
+ . " $ns:$tag found as attribute where not allowed" );
+ }
+ $this->saveValue( $ns, $tag, $val );
+ } else {
+ $this->logger->debug( __METHOD__ . " Ignoring unrecognized element <$ns:$tag>." );
+ }
+ }
+ }
+
+ /**
+ * Given an extracted value, save it to results array
+ *
+ * note also uses $this->ancestorStruct and
+ * $this->processingArray to determine what name to
+ * save the value under. (in addition to $tag).
+ *
+ * @param string $ns Namespace of tag this is for
+ * @param string $tag Tag name
+ * @param string $val Value to save
+ */
+ private function saveValue( $ns, $tag, $val ) {
+ $info =& $this->items[$ns][$tag];
+ $finalName = isset( $info['map_name'] )
+ ? $info['map_name'] : $tag;
+ if ( isset( $info['validate'] ) ) {
+ if ( is_array( $info['validate'] ) ) {
+ $validate = $info['validate'];
+ } else {
+ $validator = new XMPValidate( $this->logger );
+ $validate = [ $validator, $info['validate'] ];
+ }
+
+ if ( is_callable( $validate ) ) {
+ call_user_func_array( $validate, [ $info, &$val, true ] );
+ // the reasoning behind using &$val instead of using the return value
+ // is to be consistent between here and validating structures.
+ if ( is_null( $val ) ) {
+ $this->logger->info( __METHOD__ . " <$ns:$tag> failed validation." );
+
+ return;
+ }
+ } else {
+ $this->logger->warning( __METHOD__ . " Validation function for $finalName ("
+ . $validate[0] . '::' . $validate[1] . '()) is not callable.' );
+ }
+ }
+
+ if ( $this->ancestorStruct && $this->processingArray ) {
+ // Aka both an array and a struct. ( self::MODE_BAGSTRUCT )
+ $this->results['xmp-' . $info['map_group']][$this->ancestorStruct][][$finalName] = $val;
+ } elseif ( $this->ancestorStruct ) {
+ $this->results['xmp-' . $info['map_group']][$this->ancestorStruct][$finalName] = $val;
+ } elseif ( $this->processingArray ) {
+ if ( $this->itemLang === false ) {
+ // normal array
+ $this->results['xmp-' . $info['map_group']][$finalName][] = $val;
+ } else {
+ // lang array.
+ $this->results['xmp-' . $info['map_group']][$finalName][$this->itemLang] = $val;
+ }
+ } else {
+ $this->results['xmp-' . $info['map_group']][$finalName] = $val;
+ }
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff