Smalot\PdfParser\Parser::parseObject()

Complexity

Conditions	14
Paths	30

Size

Total Lines	83
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Importance

Changes	5
Bugs	2	Features	0

<?php
    protected function parseObject($id, $structure, $document)
    {
        $header = new Header([], $document);
        $content = '';

        foreach ($structure as $position => $part) {
            switch ($part[0]) {
                case '[':
                    $elements = [];

                    foreach ($part[1] as $sub_element) {
                        $sub_type = $sub_element[0];
                        $sub_value = $sub_element[1];
                        $elements[] = $this->parseHeaderElement($sub_type, $sub_value, $document);
                    }

                    $header = new Header($elements, $document);
                    break;

                case '<<':
                    $header = $this->parseHeader($part[1], $document);
                    break;

                case 'stream':
                    $content = isset($part[3][0]) ? $part[3][0] : $part[1];

                    if ($header->get('Type')->equals('ObjStm')) {
                        $match = [];

                        // Split xrefs and contents.
                        preg_match('/^((\d+\s+\d+\s*)*)(.*)$/s', $content, $match);
                        $content = $match[3];

                        // Extract xrefs.
                        $xrefs = preg_split(
                            '/(\d+\s+\d+\s*)/s',
                            $match[1],
                            -1,
                          PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE
                        );
                        $table = [];

                        foreach ($xrefs as $xref) {
                            list($id, $position) = explode(' ', trim($xref));
                            $table[$position] = $id;
                        }

                        ksort($table);

                        $ids = array_values($table);
                        $positions = array_keys($table);

                        foreach ($positions as $index => $position) {

$position is overwriting a variable from outer foreach loop.

                            $id = $ids[$index].'_0';
                            $next_position = isset($positions[$index + 1]) ? $positions[$index + 1] : \strlen($content);
                            $sub_content = substr($content, $position, (int) $next_position - (int) $position);

                            $sub_header = Header::parse($sub_content, $document);
                            $object = PDFObject::factory($document, $sub_header, '');
                            $this->objects[$id] = $object;
                        }

                        // It is not necessary to store this content.
                        $content = '';

The assignment to $content is dead and can be removed.

                        return;
                    }
                    break;

                default:
                    if ('null' != $part) {
                        $element = $this->parseHeaderElement($part[0], $part[1], $document);

                        if ($element) {
                            $header = new Header([$element], $document);
                        }
                    }
                    break;
            }
        }

        if (!isset($this->objects[$id])) {
            $this->objects[$id] = PDFObject::factory($document, $header, $content);
        }