XML Dom to Badgerfish JSON

xml2json-badgerfish.js

function xml2badgerfish(xmlDoc) {
    var jsonData = {};
    var nodeStack = [];

    var i, iMax, iMin;

    var n = xmlDoc;
    var j = jsonData;
    var cn, tn;
    var regEmpty = /^\s+|\s+$/g;

    xmlDoc.jsonParent = j;
    nodeStack.push(xmlDoc);

    while (nodeStack.length) {
        var n = nodeStack.pop();
        var tagGroup = null;

        j = n.jsonParent;

        for (i = 0, iMax = n.childNodes.length; i < iMax; i++) {
            cn = n.childNodes[i];
            tn = cn.tagName;

            if (tn !== undef) {
                tagGroup = tagGroup || {};
                tagGroup[tn] = tagGroup[tn] || 0;
                tagGroup[tn]++;
            }
        }

        if (n.attributes) if (n.attributes.length) {
            for (i = 0, iMax = n.attributes.length; i < iMax; i++) {
                var att = n.attributes[i];

                j["@" + att.name] = att.value;
            }
        }

        for (i = 0, iMax = n.childNodes.length; i < iMax; i++) {
            cn = n.childNodes[i];
            tn = cn.tagName;

            if (cn.nodeType === 1) {
                if (tagGroup[tn] > 1) {
                    j[tn] = j[tn] || [];
                    j[tn].push({});
                    cn.jsonParent = j[tn][j[tn].length - 1];
                } else {
                    j[tn] = j[tn] || {};
                    cn.jsonParent = j[tn];
                }
                nodeStack.push(cn);
            } else if (cn.nodeType === 3) {
                if (cn.nodeValue.replace(regEmpty, "") !== "") {
                    j.$ = j.$ || "";
                    j.$ += cn.nodeValue;
                }
            }
        }
    }

    return jsonData;
}