voku\helper\HtmlMin::minifyHtmlDom()

Complexity

Conditions	11
Paths	288

Size

Total Lines

100

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	32
CRAP Score	11

Importance

Changes

0

<?php
    private function minifyHtmlDom($html, $multiDecodeNewHtmlEntity): string
    {
        // init dom
        $dom = new HtmlDomParser();
        $dom->useKeepBrokenHtml($this->keepBrokenHtml);

        if ($this->templateLogicSyntaxInSpecialScriptTags !== null) {
            $dom->overwriteTemplateLogicSyntaxInSpecialScriptTags($this->templateLogicSyntaxInSpecialScriptTags);
        }

        $dom->getDocument()->preserveWhiteSpace = false; // remove redundant white space
        $dom->getDocument()->formatOutput = false; // do not formats output with indentation

        // Remove content before <!DOCTYPE.*> because otherwise the DOMDocument can not handle the input.
        if (\stripos($html, '<!DOCTYPE') !== false) {
            /** @noinspection NestedPositiveIfStatementsInspection */
            if (
                \preg_match('/(^.*?)<!(?:DOCTYPE)(?: [^>]*)?>/sui', $html, $matches_before_doctype)
                &&
                \trim($matches_before_doctype[1])
            ) {
                $html = \str_replace($matches_before_doctype[1], '', $html);
            }
        }

        // load dom
        /** @noinspection UnusedFunctionResultInspection */
        $dom->loadHtml($html);

        $this->withDocType = (\stripos($html, '<!DOCTYPE') === 0);

        $doctypeStr = $this->getDoctype($dom->getDocument());

        if ($doctypeStr) {
            $this->isHTML4 = \strpos($doctypeStr, 'html4') !== false;
            $this->isXHTML = \strpos($doctypeStr, 'xhtml1') !== false;
        }

        // -------------------------------------------------------------------------
        // Protect <nocompress> HTML tags first.
        // -------------------------------------------------------------------------

        $dom = $this->protectTagHelper($dom, 'nocompress');

        // -------------------------------------------------------------------------
        // Notify the Observer before the minification.
        // -------------------------------------------------------------------------

        foreach ($dom->find('*') as $element) {
            $this->notifyObserversAboutDomElementBeforeMinification($element);
        }

        // -------------------------------------------------------------------------
        // Protect HTML tags and conditional comments.
        // -------------------------------------------------------------------------

        $dom = $this->protectTags($dom);

        // -------------------------------------------------------------------------
        // Remove default HTML comments. [protected html is still protected]
        // -------------------------------------------------------------------------

        if ($this->doRemoveComments) {
            $dom = $this->removeComments($dom);
        }

        // -------------------------------------------------------------------------
        // Sum-Up extra whitespace from the Dom. [protected html is still protected]
        // -------------------------------------------------------------------------

        if ($this->doSumUpWhitespace) {
            $dom = $this->sumUpWhitespace($dom);
        }

        foreach ($dom->find('*') as $element) {

            // -------------------------------------------------------------------------
            // Remove whitespace around tags. [protected html is still protected]
            // -------------------------------------------------------------------------

            if ($this->doRemoveWhitespaceAroundTags) {
                $this->removeWhitespaceAroundTags($element);
            }

            // -------------------------------------------------------------------------
            // Notify the Observer after the minification.
            // -------------------------------------------------------------------------

            $this->notifyObserversAboutDomElementAfterMinification($element);
        }

        // -------------------------------------------------------------------------
        // Convert the Dom into a string.
        // -------------------------------------------------------------------------

        return $dom->fixHtmlOutput(
            $doctypeStr . $this->domNodeToString($dom->getDocument()),
            $multiDecodeNewHtmlEntity
        );
    }