PHPePub\Core\EPub::processChapterStyles PHP Method

    protected function processChapterStyles(&$xmlDoc, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $htmlDir = "")
    {
        if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
            return false;
        }
        // process inlined CSS styles in style tags.
        $styles = $xmlDoc->getElementsByTagName("style");
        $styleCount = $styles->length;
        for ($styleIdx = 0; $styleIdx < $styleCount; $styleIdx++) {
            $style = $styles->item($styleIdx);
            $styleData = preg_replace('#[/\\*\\s]*\\<\\!\\[CDATA\\[[\\s\\*/]*#im', "", $style->nodeValue);
            $styleData = preg_replace('#[/\\*\\s]*\\]\\]\\>[\\s\\*/]*#im', "", $styleData);
            $this->processCSSExternalReferences($styleData, $externalReferences, $baseDir, $htmlDir);
            $style->nodeValue = "\n" . trim($styleData) . "\n";
        }
        return true;
    }