Admin_TranslationController::escapeXliff PHP Метод

    protected function escapeXliff($content)
    {
        $count = 1;
        $openTags = [];
        $final = [];
        // remove nasty device control characters
        $content = preg_replace('/[\\x00-\\x09\\x0B\\x0C\\x0E-\\x1F\\x7F]/', '', $content);
        $replacement = ['%_%_%lt;%_%_%', '%_%_%gt;%_%_%'];
        $content = str_replace(['<', '>'], $replacement, $content);
        $content = html_entity_decode($content, null, "UTF-8");
        if (!preg_match_all("/<([^>]+)>([^<]+)?/", $content, $matches)) {
            // return original content if it doesn't contain HTML tags
            return '<![CDATA[' . $content . ']]>';
        }
        foreach ($matches[0] as $match) {
            $parts = explode(">", $match);
            $parts[0] .= ">";
            foreach ($parts as $part) {
                $part = trim($part);
                if (!empty($part)) {
                    if (preg_match("/<([a-z0-9\\/]+)/", $part, $tag)) {
                        $tagName = str_replace("/", "", $tag[1]);
                        if (strpos($tag[1], "/") === false) {
                            $openTags[$count] = ["tag" => $tagName, "id" => $count];
                            $part = '<bpt id="' . $count . '"><![CDATA[' . $part . ']]></bpt>';
                            $count++;
                        } else {
                            $closingTag = array_pop($openTags);
                            $part = '<ept id="' . $closingTag["id"] . '"><![CDATA[' . $part . ']]></ept>';
                        }
                    } else {
                        $part = str_replace($replacement, ['<', '>'], $part);
                        $part = '<![CDATA[' . $part . ']]>';
                    }
                    if (!empty($part)) {
                        $final[] = $part;
                    }
                }
            }
        }
        $content = implode("", $final);
        return $content;
    }