Kitodo\Dlf\Common\Document\MetsDocument::getLogicalStructureInfo()

Complexity

Conditions	24
Paths	9216

Size

Total Lines	93
Code Lines	57

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    protected function getLogicalStructureInfo(\SimpleXMLElement $structure, $recursive = false)
    {
        // Get attributes.
        foreach ($structure->attributes() as $attribute => $value) {
            $attributes[$attribute] = (string) $value;
        }
        // Load plugin configuration.
        $extConf = GeneralUtility::makeInstance(ExtensionConfiguration::class)->get(self::$extKey);
        // Extract identity information.
        $details = [];
        $details['id'] = $attributes['ID'];
        $details['dmdId'] = (isset($attributes['DMDID']) ? $attributes['DMDID'] : '');
        $details['order'] = (isset($attributes['ORDER']) ? $attributes['ORDER'] : '');
        $details['label'] = (isset($attributes['LABEL']) ? $attributes['LABEL'] : '');
        $details['orderlabel'] = (isset($attributes['ORDERLABEL']) ? $attributes['ORDERLABEL'] : '');
        $details['contentIds'] = (isset($attributes['CONTENTIDS']) ? $attributes['CONTENTIDS'] : '');
        $details['volume'] = '';
        // Set volume information only if no label is set and this is the toplevel structure element.
        if (
            empty($details['label'])
            && $details['id'] == $this->_getToplevelId()
        ) {
            $metadata = $this->getMetadata($details['id']);
            if (!empty($metadata['volume'][0])) {
                $details['volume'] = $metadata['volume'][0];
            }
        }
        $details['pagination'] = '';
        $details['type'] = $attributes['TYPE'];
        $details['thumbnailId'] = '';
        // Load smLinks.
        $this->_getSmLinks();
        // Load physical structure.
        $this->_getPhysicalStructure();
        // Get the physical page or external file this structure element is pointing at.
        $details['points'] = '';
        // Is there a mptr node?
        if (count($structure->children('http://www.loc.gov/METS/')->mptr)) {
            // Yes. Get the file reference.
            $details['points'] = (string) $structure->children('http://www.loc.gov/METS/')->mptr[0]->attributes('http://www.w3.org/1999/xlink')->href;
        } elseif (
            !empty($this->physicalStructure)
            && array_key_exists($details['id'], $this->smLinks['l2p'])
        ) {
            // Link logical structure to the first corresponding physical page/track.
            $details['points'] = max(intval(array_search($this->smLinks['l2p'][$details['id']][0], $this->physicalStructure, true)), 1);
            $fileGrpsThumb = GeneralUtility::trimExplode(',', $extConf['fileGrpThumbs']);
            while ($fileGrpThumb = array_shift($fileGrpsThumb)) {
                if (!empty($this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$fileGrpThumb])) {
                    $details['thumbnailId'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$fileGrpThumb];
                    break;
                }
            }
            // Get page/track number of the first page/track related to this structure element.
            $details['pagination'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['orderlabel'];
        } elseif ($details['id'] == $this->_getToplevelId()) {
            // Point to self if this is the toplevel structure.
            $details['points'] = 1;
            $fileGrpsThumb = GeneralUtility::trimExplode(',', $extConf['fileGrpThumbs']);
            while ($fileGrpThumb = array_shift($fileGrpsThumb)) {
                if (
                    !empty($this->physicalStructure)
                    && !empty($this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$fileGrpThumb])
                ) {
                    $details['thumbnailId'] = $this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$fileGrpThumb];
                    break;
                }
            }
        }
        // Get the files this structure element is pointing at.
        $details['files'] = [];
        $fileUse = $this->_getFileGrps();
        // Get the file representations from fileSec node.
        foreach ($structure->children('http://www.loc.gov/METS/')->fptr as $fptr) {
            // Check if file has valid @USE attribute.
            if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {

The method attributes() does not exist on null.

                $details['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
            }
        }
        // Keep for later usage.
        $this->logicalUnits[$details['id']] = $details;
        // Walk the structure recursively? And are there any children of the current element?
        if (
            $recursive
            && count($structure->children('http://www.loc.gov/METS/')->div)
        ) {
            $details['children'] = [];
            foreach ($structure->children('http://www.loc.gov/METS/')->div as $child) {
                // Repeat for all children.
                $details['children'][] = $this->getLogicalStructureInfo($child, true);

It seems like $child can also be of type null; however, parameter $structure of Kitodo\Dlf\Common\Document\MetsDocument::getLogicalStructureInfo() does only seem to accept SimpleXMLElement, maybe add an additional type check?

            }
        }
        return $details;
    }