class.ilBiblRisFileReader.php

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<?php
 
class ilBiblRisFileReader extends ilBiblFileReaderBase implements ilBiblFileReaderInterface
{
    protected ilBiblRisFileReaderWrapper $wrapper;
 
    public function __construct(
        ilBiblEntryFactoryInterface $entry_factory,
        ilBiblFieldFactoryInterface $field_factory,
        ilBiblAttributeFactoryInterface $attribute_factory
    ) {
        parent::__construct($entry_factory, $field_factory, $attribute_factory);
        $this->wrapper = new ilBiblRisFileReaderWrapper();
    }
 
    public function parseContent(): array
    {
        $content = $this->wrapper->parseContent($this->file_content);
 
        return $this->flattenContent($content);
    }
 
    private function flattenContent(array $content): array
    {
        $flattener = function ($i) {
            if (is_array($i)) {
                return implode(", ", $i);
            }
            return $i;
        };
 
        $walker = function ($item) use ($flattener) {
            if (is_array($item)) {
                foreach ($item as $k => $i) {
                    $item[$k] = $flattener($i);
                }
                return $item;
            }
            return $item;
        };
 
        return array_map($walker, $content);
    }
}