function xmlParse()

in lib/xml.js [178:231]

• 44 lines of code
• 18 McCabe index (conditional complexity)

function xmlParse(text) {
    var domParser = undefined;
    if (utils.inBrowser()) {
        domParser = window.DOMParser && new window.DOMParser();
    } else {
        domParser = new (require('xmldom').DOMParser)();
    }
    var dom;

    if (!domParser) {
        dom = msXmlParse(text);
        if (!dom) {
            xmlThrowParserError("XML DOM parser not supported");
        }
        return dom;
    }

    try {
        dom = domParser.parseFromString(text, "text/xml");
    } catch (e) {
        xmlThrowParserError(e, "", text);
    }

    var element = dom.documentElement;
    var nsURI = element.namespaceURI;
    var localName = xmlLocalName(element);

    // Firefox reports errors by returing the DOM for an xml document describing the problem.
    if (localName === "parsererror" && nsURI === mozillaParserErroNS) {
        var srcTextElement = xmlFirstChildElement(element, mozillaParserErroNS, "sourcetext");
        var srcText = srcTextElement ? xmlNodeValue(srcTextElement) : "";
        xmlThrowParserError(xmlInnerText(element) || "", srcText, text);
    }

    // Chrome (and maybe other webkit based browsers) report errors by injecting a header with an error message.
    // The error may be localized, so instead we simply check for a header as the
    // top element or descendant child of the document.
    if (localName === "h3" && nsURI === xhtmlNS || xmlFirstDescendantElement(element, xhtmlNS, "h3")) {
        var reason = "";
        var siblings = [];
        var cursor = element.firstChild;
        while (cursor) {
            if (cursor.nodeType === 1) {
                reason += xmlInnerText(cursor) || "";
            }
            siblings.push(cursor.nextSibling);
            cursor = cursor.firstChild || siblings.shift();
        }
        reason += xmlInnerText(element) || "";
        xmlThrowParserError(reason, "", text);
    }

    return dom;
}