Smalot\PdfParser\PDFObject::getSectionsText()

Complexity

Conditions	14
Paths	13

Size

Total Lines	69
Code Lines	34

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	42
CRAP Score	14.0184

Importance

Changes

0

<?php
    public function getSectionsText(?string $content): array
    {
        $sections = [];

        // A cleaned stream has one command on every line, so split the
        // cleaned stream content on \r\n into an array
        $textCleaned = preg_split(
            '/(\r\n|\n|\r)/',
            $this->cleanContent($content),
            -1,
            \PREG_SPLIT_NO_EMPTY
        );

        $inTextBlock = false;
        foreach ($textCleaned as $line) {
            $line = trim($line);

            // Skip empty lines
            if ('' === $line) {
                continue;
            }

            // If a 'BT' is encountered, set the $inTextBlock flag
            if (preg_match('/BT$/', $line)) {
                $inTextBlock = true;
                $sections[] = $line;

                // If an 'ET' is encountered, unset the $inTextBlock flag
            } elseif ('ET' == $line) {
                $inTextBlock = false;
                $sections[] = $line;
            } elseif ($inTextBlock) {
                // If we are inside a BT ... ET text block, save all lines
                $sections[] = trim($line);
            } else {
                // Otherwise, if we are outside of a text block, only
                // save specific, necessary lines. Care should be taken
                // to ensure a command being checked for *only* matches
                // that command. For instance, a simple search for 'c'
                // may also match the 'sc' command. See the command
                // list in the cleanContent() method above.
                // Add more commands to save here as you find them in
                // weird PDFs!
                if ('q' == $line[-1] || 'Q' == $line[-1]) {
                    // Save and restore graphics state commands
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)B[DM]C$/', $line)) {
                    // Begin marked content sequence
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)[DM]P$/', $line)) {
                    // Marked content point
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)EMC$/', $line)) {
                    // End marked content sequence
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)cm$/', $line)) {
                    // Graphics position change commands
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)Tf$/', $line)) {
                    // Font change commands
                    $sections[] = $line;
                } elseif (preg_match('/(?<!\w)Do$/', $line)) {
                    // Invoke named XObject command
                    $sections[] = $line;
                }
            }
        }

        return $sections;
    }