function replaceMethodSynopses()

in gen_stub.php [1597:1760]
126 lines of code
27 McCabe index (conditional complexity)

function replaceMethodSynopses(string $targetDirectory, array $funcMap, array $aliasMap): array {
    $methodSynopses = [];

    $it = new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator($targetDirectory),
        RecursiveIteratorIterator::LEAVES_ONLY
    );

    foreach ($it as $file) {
        $pathName = $file->getPathName();
        if (!preg_match('/\.xml$/i', $pathName)) {
            continue;
        }

        $xml = file_get_contents($pathName);
        if ($xml === false) {
            continue;
        }

        if (stripos($xml, "<methodsynopsis") === false && stripos($xml, "<constructorsynopsis") === false && stripos($xml, "<destructorsynopsis") === false) {
            continue;
        }

        $replacedXml = preg_replace("/&([A-Za-z0-9._{}%-]+?;)/", "REPLACED-ENTITY-$1", $xml);

        $doc = new DOMDocument();
        $doc->formatOutput = false;
        $doc->preserveWhiteSpace = true;
        $doc->validateOnParse = true;
        $success = $doc->loadXML($replacedXml);
        if (!$success) {
            echo "Failed opening $pathName\n";
            continue;
        }

        $docComparator = new DOMDocument();
        $docComparator->preserveWhiteSpace = false;
        $docComparator->formatOutput = true;

        $methodSynopsisElements = [];
        foreach ($doc->getElementsByTagName("constructorsynopsis") as $element) {
            $methodSynopsisElements[] = $element;
        }
        foreach ($doc->getElementsByTagName("destructorsynopsis") as $element) {
            $methodSynopsisElements[] = $element;
        }
        foreach ($doc->getElementsByTagName("methodsynopsis") as $element) {
            $methodSynopsisElements[] = $element;
        }

        foreach ($methodSynopsisElements as $methodSynopsis) {
            if (!$methodSynopsis instanceof DOMElement) {
                continue;
            }

            $list = $methodSynopsis->getElementsByTagName("methodname");
            $item = $list->item(0);
            if (!$item instanceof DOMElement) {
                continue;
            }
            $funcName = $item->textContent;
            if (!isset($funcMap[$funcName])) {
                continue;
            }
            $funcInfo = $funcMap[$funcName];

            $newMethodSynopsis = $funcInfo->getMethodSynopsisElement($funcMap, $aliasMap, $doc);
            if ($newMethodSynopsis === null) {
                continue;
            }

            // Retrieve current signature

            $params = [];
            $list = $methodSynopsis->getElementsByTagName("methodparam");
            foreach ($list as $i => $item) {
                if (!$item instanceof DOMElement) {
                    continue;
                }

                $paramList = $item->getElementsByTagName("parameter");
                if ($paramList->count() !== 1) {
                    continue;
                }

                $paramName = $paramList->item(0)->textContent;
                $paramTypes = [];

                $paramList = $item->getElementsByTagName("type");
                foreach ($paramList as $type) {
                    if (!$type instanceof DOMElement) {
                        continue;
                    }

                    $paramTypes[] = $type->textContent;
                }

                $params[$paramName] = ["index" => $i, "type" => $paramTypes];
            }

            // Check if there is any change - short circuit if there is not any.

            $xml1 = $doc->saveXML($methodSynopsis);
            $xml1 = preg_replace("/&([A-Za-z0-9._{}%-]+?;)/", "REPLACED-ENTITY-$1", $xml1);
            $docComparator->loadXML($xml1);
            $xml1 = $docComparator->saveXML();

            $methodSynopsis->parentNode->replaceChild($newMethodSynopsis, $methodSynopsis);

            $xml2 = $doc->saveXML($newMethodSynopsis);
            $xml2 = preg_replace("/&([A-Za-z0-9._{}%-]+?;)/", "REPLACED-ENTITY-$1", $xml2);
            $docComparator->loadXML($xml2);
            $xml2 = $docComparator->saveXML();

            if ($xml1 === $xml2) {
                continue;
            }

            // Update parameter references

            $paramList = $doc->getElementsByTagName("parameter");
            /** @var DOMElement $paramElement */
            foreach ($paramList as $paramElement) {
                if ($paramElement->parentNode && $paramElement->parentNode->nodeName === "methodparam") {
                    continue;
                }

                $name = $paramElement->textContent;
                if (!isset($params[$name])) {
                    continue;
                }

                $index = $params[$name]["index"];
                if (!isset($funcInfo->args[$index])) {
                    continue;
                }

                $paramElement->textContent = $funcInfo->args[$index]->name;
            }

            // Return the updated XML

            $replacedXml = $doc->saveXML();

            $replacedXml = preg_replace(
                [
                    "/REPLACED-ENTITY-([A-Za-z0-9._{}%-]+?;)/",
                    "/<refentry\s+xmlns=\"([a-z0-9.:\/]+)\"\s+xml:id=\"([a-z0-9._-]+)\"\s*>/i",
                    "/<refentry\s+xmlns=\"([a-z0-9.:\/]+)\"\s+xmlns:xlink=\"([a-z0-9.:\/]+)\"\s+xml:id=\"([a-z0-9._-]+)\"\s*>/i",
                ],
                [
                    "&$1",
                    "<refentry xml:id=\"$2\" xmlns=\"$1\">",
                    "<refentry xml:id=\"$3\" xmlns=\"$1\" xmlns:xlink=\"$2\">",
                ],
                $replacedXml
            );

            $methodSynopses[$pathName] = $replacedXml;
        }
    }

    return $methodSynopses;
}