GrumPHP\Linter\Xml\XmlLinter::validateInternalSchemes PHP Method

    private function validateInternalSchemes(SplFileInfo $file, DOMDocument $document)
    {
        $schemas = [];
        $attributes = $document->documentElement->attributes;
        if ($schemaLocation = $attributes->getNamedItemNS(self::XSI_NAMESPACE, 'schemaLocation')) {
            $parts = preg_split('/\\s{1,}/', trim($schemaLocation->textContent));
            foreach ($parts as $key => $value) {
                if ($key & 1) {
                    $schemas[] = $value;
                }
            }
        }
        if ($schemaLocNoNamespace = $attributes->getNamedItemNS(self::XSI_NAMESPACE, 'noNamespaceSchemaLocation')) {
            $schemas = array_merge($schemas, preg_split('/\\s{1,}/', trim($schemaLocNoNamespace->textContent)));
        }
        $isValid = true;
        foreach ($schemas as $scheme) {
            if ($scheme = $this->locateScheme($file, $scheme)) {
                $isValid = $isValid && $document->schemaValidate($scheme);
            }
        }
        return $isValid;
    }