/*
 * Copyright (c) 2009 and 2010 Frank G. Bennett, Jr. All Rights
 * Reserved.
 *
 * The contents of this file are subject to the Common Public
 * Attribution License Version 1.0 (the “License”); you may not use
 * this file except in compliance with the License. You may obtain a
 * copy of the License at:
 *
 * http://bitbucket.org/fbennett/citeproc-js/src/tip/LICENSE.
 *
 * The License is based on the Mozilla Public License Version 1.1 but
 * Sections 14 and 15 have been added to cover use of software over a
 * computer network and provide for limited attribution for the
 * Original Developer. In addition, Exhibit A has been modified to be
 * consistent with Exhibit B.
 *
 * Software distributed under the License is distributed on an “AS IS”
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is the citation formatting software known as
 * "citeproc-js" (an implementation of the Citation Style Language
 * [CSL]), including the original test fixtures and software located
 * under the ./std subdirectory of the distribution archive.
 *
 * The Original Developer is not the Initial Developer and is
 * __________. If left blank, the Original Developer is the Initial
 * Developer.
 *
 * The Initial Developer of the Original Code is Frank G. Bennett,
 * Jr. All portions of the code written by Frank G. Bennett, Jr. are
 * Copyright (c) 2009 and 2010 Frank G. Bennett, Jr. All Rights Reserved.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU Affero General Public License (the [AGPLv3]
 * License), in which case the provisions of [AGPLv3] License are
 * applicable instead of those above. If you wish to allow use of your
 * version of this file only under the terms of the [AGPLv3] License
 * and not to allow others to use your version of this file under the
 * CPAL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the
 * [AGPLv3] License. If you do not delete the provisions above, a
 * recipient may use your version of this file under either the CPAL
 * or the [AGPLv3] License.”
 */
var zotero = {};
zotero.Debug = function(s, level){
    return;
    console.log(s);
}

var Encoder = {

    // When encoding do we convert characters into html or numerical entities
    EncodeType : "entity",  // entity OR numerical

    isEmpty : function(val){
        if(val){
            //replaced by fcheslack so whitespace separators are not stripped from CSL
            //return ((val===null) || val.length==0 || /^\s+$/.test(val));
            return ((val===null) || val.length==0);
        }else{
            return true;
        }
    },
    // Convert HTML entities into numerical entities
    HTML2Numerical : function(s){
        var arr1 = new Array(' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','à','á','â','ã','Ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','Ö','×','ø','ù','ú','û','Ü','ý','þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','Ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','œ','œ','š','š','ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','†','‰','‹','›','€','ƒ','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','σ','τ','υ','φ','χ','ψ','ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','′','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','←','↑','→','↓','↔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','⟨','⟩','◊','♠','♣','♥','♦');
        var arr2 = new Array(' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','À','Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë','Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö','×','Ø','Ù','Ú','Û','Ü','Ý','Þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','Œ','œ','Š','š','Ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','‡','‰','‹','›','€','ƒ','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','″','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','⇐','⇑','⇒','⇓','⇔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','〈','〉','◊','♠','♣','♥','♦');
        return this.swapArrayVals(s,arr1,arr2);
    },  

    // Convert Numerical entities into HTML entities
    NumericalToHTML : function(s){
        var arr1 = new Array(' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','À','Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë','Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö','×','Ø','Ù','Ú','Û','Ü','Ý','Þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','Œ','œ','Š','š','Ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','‡','‰','‹','›','€','ƒ','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','″','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','⇐','⇑','⇒','⇓','⇔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','〈','〉','◊','♠','♣','♥','♦');
        var arr2 = new Array(' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','à','á','â','ã','Ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','Ö','×','ø','ù','ú','û','Ü','ý','þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','Ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','œ','œ','š','š','ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','†','‰','‹','›','€','ƒ','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','σ','τ','υ','φ','χ','ψ','ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','′','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','←','↑','→','↓','↔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','⟨','⟩','◊','♠','♣','♥','♦');
        return this.swapArrayVals(s,arr1,arr2);
    },


    // Numerically encodes all unicode characters
    numEncode : function(s){
        
        if(this.isEmpty(s)) return "";

        var e = "";
        for (var i = 0; i < s.length; i++)
        {
            var c = s.charAt(i);
            if (c < " " || c > "~")
            {
                c = "&#" + c.charCodeAt() + ";";
            }
            e += c;
        }
        return e;
    },
    
    // HTML Decode numerical and HTML entities back to original values
    htmlDecode : function(s){

        var c,m,d = s;
        
        if(this.isEmpty(d)) return "";

        // convert HTML entites back to numerical entites first
        d = this.HTML2Numerical(d);
        
        // look for numerical entities &#34;
        arr=d.match(/&#[0-9]{1,5};/g);
        
        // if no matches found in string then skip
        if(arr!=null){
            for(var x=0;x<arr.length;x++){
                m = arr[x];
                c = m.substring(2,m.length-1); //get numeric part which is refernce to unicode character
                // if its a valid number we can decode
                if(c >= -32768 && c <= 65535){
                    // decode every single match within string
                    d = d.replace(m, String.fromCharCode(c));
                }else{
                    d = d.replace(m, ""); //invalid so replace with nada
                }
            }           
        }

        return d;
    },      

    // encode an input string into either numerical or HTML entities
    htmlEncode : function(s,dbl){
            
        if(this.isEmpty(s)) return "";

        // do we allow double encoding? E.g will &amp; be turned into &amp;amp;
        dbl = dbl || false; //default to prevent double encoding
        
        // if allowing double encoding we do ampersands first
        if(dbl){
            if(this.EncodeType=="numerical"){
                s = s.replace(/&/g, "&#38;");
            }else{
                s = s.replace(/&/g, "&amp;");
            }
        }

        // convert the xss chars to numerical entities ' " < >
        s = this.XSSEncode(s,false);
        
        if(this.EncodeType=="numerical" || !dbl){
            // Now call function that will convert any HTML entities to numerical codes
            s = this.HTML2Numerical(s);
        }

        // Now encode all chars above 127 e.g unicode
        s = this.numEncode(s);

        // now we know anything that needs to be encoded has been converted to numerical entities we
        // can encode any ampersands & that are not part of encoded entities
        // to handle the fact that I need to do a negative check and handle multiple ampersands &&&
        // I am going to use a placeholder

        // if we don't want double encoded entities we ignore the & in existing entities
        if(!dbl){
            s = s.replace(/&#/g,"##AMPHASH##");
        
            if(this.EncodeType=="numerical"){
                s = s.replace(/&/g, "&#38;");
            }else{
                s = s.replace(/&/g, "&amp;");
            }

            s = s.replace(/##AMPHASH##/g,"&#");
        }
        
        // replace any malformed entities
        s = s.replace(/&#\d*([^\d;]|$)/g, "$1");

        if(!dbl){
            // safety check to correct any double encoded &amp;
            s = this.correctEncoding(s);
        }

        // now do we need to convert our numerical encoded string into entities
        if(this.EncodeType=="entity"){
            s = this.NumericalToHTML(s);
        }

        return s;                   
    },

    // Encodes the basic 4 characters used to malform HTML in XSS hacks
    XSSEncode : function(s,en){
        if(!this.isEmpty(s)){
            en = en || true;
            // do we convert to numerical or html entity?
            if(en){
                s = s.replace(/\'/g,"&#39;"); //no HTML equivalent as &apos is not cross browser supported
                s = s.replace(/\"/g,"&quot;");
                s = s.replace(/</g,"&lt;");
                s = s.replace(/>/g,"&gt;");
            }else{
                s = s.replace(/\'/g,"&#39;"); //no HTML equivalent as &apos is not cross browser supported
                s = s.replace(/\"/g,"&#34;");
                s = s.replace(/</g,"&#60;");
                s = s.replace(/>/g,"&#62;");
            }
            return s;
        }else{
            return "";
        }
    },

    // returns true if a string contains html or numerical encoded entities
    hasEncoded : function(s){
        if(/&#[0-9]{1,5};/g.test(s)){
            return true;
        }else if(/&[A-Z]{2,6};/gi.test(s)){
            return true;
        }else{
            return false;
        }
    },

    // will remove any unicode characters
    stripUnicode : function(s){
        return s.replace(/[^\x20-\x7E]/g,"");
        
    },

    // corrects any double encoded &amp; entities e.g &amp;amp;
    correctEncoding : function(s){
        return s.replace(/(&amp;)(amp;)+/,"$1");
    },


    // Function to loop through an array swaping each item with the value from another array e.g swap HTML entities with Numericals
    swapArrayVals : function(s,arr1,arr2){
        if(this.isEmpty(s)) return "";
        var re;
        if(arr1 && arr2){
            //ShowDebug("in swapArrayVals arr1.length = " + arr1.length + " arr2.length = " + arr2.length)
            // array lengths must match
            if(arr1.length == arr2.length){
                for(var x=0,i=arr1.length;x<i;x++){
                    re = new RegExp(arr1[x], 'g');
                    s = s.replace(re,arr2[x]); //swap arr1 item with matching item from arr2    
                }
            }
        }
        return s;
    },

    inArray : function( item, arr ) {
        for ( var i = 0, x = arr.length; i < x; i++ ){
            if ( arr[i] === item ){
                return i;
            }
        }
        return -1;
    }

};

var DOMParser;
var CSL_NODEJS_JSDOM = function () {
        DOMParser = function() {};
        DOMParser.prototype.parseFromString = function(str, contentType) {
            var jsdom = require("jsdom").jsdom;
            return jsdom(str);
            /*
            if ("undefined" != typeof ActiveXObject) {
                var xmldata = new ActiveXObject('MSXML.DomDocument');
                xmldata.async = false;
                xmldata.loadXML(str);
                return xmldata;
            } else if ("undefined" != typeof XMLHttpRequest) {
                var xmldata = new XMLHttpRequest;
                if (!contentType) {
                    contentType = 'text/xml';
                }
                xmldata.open('GET', 'data:' + contentType + ';charset=utf-8,' + encodeURIComponent(str), false);
                if(xmldata.overrideMimeType) {
                    xmldata.overrideMimeType(contentType);
                }
                xmldata.send(null);
                return xmldata.responseXML;
            }
            */
        };
        /*
        this.hasAttributes = function (node) {
            var ret;
            if (node.attributes && node.attributes.length) {
                ret = true;
            } else {
                ret = false;
            }
            return ret;
        };
        */
    this.hasAttributes = function (node) {
        zotero.Debug('CSL_NODEJS.hasAttributes', 3);
        zotero.Debug("node.hasAttributes(): " + node.hasAttributes(), 3);
        //zotero.Debug(node);
        return node.hasAttributes();
    };
    this.importNode = function (doc, srcElement) {
        zotero.Debug('CSL_NODEJS.importNode', 3);
        if ("undefined" == typeof doc.importNode) {
            var ret = this._importNode(doc, srcElement, true);
        } else {
            var ret = doc.importNode(srcElement, true);
        }
        return ret;
    };
    this._importNode = function(doc, node, allChildren) {
        zotero.Debug('CSL_NODEJS._importNode', 3);
        switch (node.nodeType) {
            case 1:
                var newNode = doc.createElement(node.nodeName);
                if (node.attributes && node.attributes.length > 0)
                    for (var i = 0, il = node.attributes.length; i < il;)
                        newNode.setAttribute(node.attributes[i].nodeName, node.getAttribute(node.attributes[i++].nodeName));
                    if (allChildren && node.childNodes && node.childNodes.length > 0)
                        for (var i = 0, il = node.childNodes.length; i < il;)
                            newNode.appendChild(this._importNode(doc, node.childNodes[i++], allChildren));
                return newNode;
                break;
            case 3:
            case 4:
            case 8:
        }
    };
    this.parser = new DOMParser();
    // This seems horribly tormented, but there might be a reason for it.
    // Perhaps this was the only way I found to get namespacing to work ... ?
    var str = "<docco><institution institution-parts=\"long\" delimiter=\", \" substitute-use-first=\"1\" use-last=\"1\"><institution-part name=\"long\"></institution></docco>";
    var inst_doc = this.parser.parseFromString(str, "text/xml");
    var inst_node = inst_doc.getElementsByTagName("institution");
    this.institution = inst_node.item(0);
    var inst_part_node = inst_doc.getElementsByTagName("institution-part");
    this.institutionpart = inst_part_node.item(0);
    this.ns = "http://purl.org/net/xbiblio/csl";
};
CSL_NODEJS_JSDOM.prototype.clean = function (xml) {
    zotero.Debug('CSL_NODEJS.clean', 3);
    xml = xml.replace(/<\?[^?]+\?>/g, "");
    xml = xml.replace(/<![^>]+>/g, "");
    xml = xml.replace(/^\s+/, "");
    xml = xml.replace(/\s+$/, "");
    xml = xml.replace(/^\n*/, "");
    return xml;
};
CSL_NODEJS_JSDOM.prototype.getStyleId = function (myxml) {
    var text = "";
    var node = myxml.getElementsByTagName("id");
    if (node && node.length) {
        node = node.item(0);
    }
    if (node) {
        // W3C conformant browsers
        text = node.textContent;
    }
    return text;
};

CSL_NODEJS_JSDOM.prototype.children = function (myxml) {
    zotero.Debug("children called on: " + myxml, 3);
    var children, pos, len, ret;
    if (myxml) {
        ret = [];
        children = myxml.childNodes;
        for (pos = 0, len = children.length; pos < len; pos += 1) {
            if (children[pos].nodeName != "#text") {
                ret.push(children[pos]);
            }
        }
        return ret;
    } else {
        return [];
    }
};
CSL_NODEJS_JSDOM.prototype.nodename = function (myxml) {
    zotero.Debug('CSL_NODEJS.nodename ' + myxml, 3);
    //zotero.Debug(myxml);
    var ret = myxml.nodeName;
    if(ret) ret = ret.toLowerCase();
    zotero.Debug("node name = " + ret, 3);
    return ret;
};
CSL_NODEJS_JSDOM.prototype.attributes = function (myxml) {
    zotero.Debug('CSL_NODEJS.attributes');
    var ret, attrs, attr, key, xml, pos, len;
    ret = new Object();
    if (myxml && this.hasAttributes(myxml)) {
        attrs = myxml.attributes;
        for (pos = 0, len=attrs.length; pos < len; pos += 1) {
            attr = attrs[pos];
            var v = attr.value;
            //v = v.replace('&lt;', '&60;').replace('&gt;', '&62').replace('&quot;', '&34').replace('&amp;', '&38;');
            v = Encoder.htmlDecode(v);
            ret["@" + attr.name] = v;
        }
    }
    return ret;
};
CSL_NODEJS_JSDOM.prototype.content = function (myxml) {
    zotero.Debug('CSL_NODEJS.content', 3);
    var ret;
    if ("undefined" != typeof myxml.textContent) {
        ret = myxml.textContent;
    } else if ("undefined" != typeof myxml.innerText) {
        ret = myxml.innerText;
    } else {
        ret = myxml.txt;
    }
    return ret;
};
CSL_NODEJS_JSDOM.prototype.namespace = {
    "xml":"http://www.w3.org/XML/1998/namespace"
}
CSL_NODEJS_JSDOM.prototype.numberofnodes = function (myxml) {
    zotero.Debug('CSL_NODEJS.numberofnodes', 3);
    if (myxml) {
        zotero.Debug(myxml.length);
        return myxml.length;
    } else {
        zotero.Debug('0');
        return 0;
    }
};
CSL_NODEJS_JSDOM.prototype.getAttributeName = function (attr) {
    zotero.Debug('CSL_NODEJS.getAttributeName', 3);
    var ret = attr.name;
    return ret;
}
CSL_NODEJS_JSDOM.prototype.getAttributeValue = function (myxml,name,namespace) {
    zotero.Debug('CSL_NODEJS.getAttributeValue', 3);
    var ret = "";
    if (myxml && this.hasAttributes(myxml) && myxml.getAttribute(name)) {
        ret = myxml.getAttribute(name);
    }
    return ret;
}
CSL_NODEJS_JSDOM.prototype.getNodeValue = function (myxml,name) {
    zotero.Debug('CSL_NODEJS.getNodeValue : ' + name, 3);
    var ret = "";
    if (name){
        var vals = myxml.getElementsByTagName(name);
        if (vals.length > 0) {
            if ("undefined" != typeof vals[0].textContent) {
                ret = vals[0].textContent;
            } else if ("undefined" != typeof vals[0].innerText) {
                ret = vals[0].innerText;
            } else {
                ret = vals[0].text;
            }
        }
    } else {
        ret = myxml;
    }
    if (ret && ret.childNodes && (ret.childNodes.length == 0 || (ret.childNodes.length == 1 && ret.firstChild.nodeName == "#text"))) {
        if ("undefined" != typeof ret.textContent) {
            ret = ret.textContent;
        } else if ("undefined" != typeof ret.innerText) {
            ret = ret.innerText;
        } else {
            ret = ret.text;
        }
    }
    return ret;
}
CSL_NODEJS_JSDOM.prototype.setAttributeOnNodeIdentifiedByNameAttribute = function (myxml,nodename,partname,attrname,val) {
    zotero.Debug('CSL_NODEJS.setAttributeOnNodeIdentifiedByNameAttribute', 3);
    var pos, len, xml, nodes, node;
    if (attrname.slice(0,1) === '@'){
        attrname = attrname.slice(1);
    }
    nodes = myxml.getElementsByTagName(nodename);
    for (pos = 0, len = nodes.length; pos < len; pos += 1) {
        node = nodes[pos];
        if (node.getAttribute("name") != partname) {
            continue;
        }
        node.setAttribute(attrname, val);
    }
}
CSL_NODEJS_JSDOM.prototype.deleteNodeByNameAttribute = function (myxml,val) {
    zotero.Debug('CSL_NODEJS.deleteNodeByNameAttribute', 3);
    var pos, len, node, nodes;
    nodes = myxml.childNodes;
    for (pos = 0, len = nodes.length; pos < len; pos += 1) {
        node = nodes[pos];
        if (!node || node.nodeType == node.TEXT_NODE) {
            continue;
        }
        if (this.hasAttributes(node) && node.getAttribute("name") == val) {
            myxml.removeChild(nodes[pos]);
        }
    }
}
CSL_NODEJS_JSDOM.prototype.deleteAttribute = function (myxml,attr) {
    zotero.Debug('CSL_NODEJS.deleteAttribute', 3);
    myxml.removeAttribute(attr);
}
CSL_NODEJS_JSDOM.prototype.setAttribute = function (myxml,attr,val) {
    zotero.Debug('CSL_NODEJS.setAttribute', 3);
    var attribute;
    if (!myxml.ownerDocument) {
        myxml = myxml.firstChild;
    }
    attribute = myxml.ownerDocument.createAttribute(attr);
    zotero.Debug('created attribute:');
    //zotero.Debug(attribute);
    myxml.setAttribute(attr, val);
    return false;
}
CSL_NODEJS_JSDOM.prototype.nodeCopy = function (myxml) {
    zotero.Debug('CSL_NODEJS.nodeCopy', 3);
    var cloned_node = myxml.cloneNode(true);
    return cloned_node;
}
CSL_NODEJS_JSDOM.prototype.getNodesByName = function (myxml,name,nameattrval) {
    zotero.Debug('CSL_NODEJS.getNodesByName : ' + name + " = " + nameattrval, 3);
    var ret, nodes, node, pos, len;
    ret = [];
    if(typeof myxml.getElementsByTagName == 'undefined'){
        return ret;
    }
    nodes = myxml.getElementsByTagName(name);
    for (pos = 0, len = nodes.length; pos < len; pos += 1) {
        node = nodes.item(pos);
        if (nameattrval && !(this.hasAttributes(node) && node.getAttribute("name") == nameattrval)) {
            continue;
        }
        ret.push(node);
    }
    return ret;
}
CSL_NODEJS_JSDOM.prototype.nodeNameIs = function (myxml,name) {
    zotero.Debug('CSL_NODEJS.nodeNameIs', 3);
    if (name == myxml.nodeName.toLowerCase()) {
        return true;
    }
    return false;
}
CSL_NODEJS_JSDOM.prototype.makeXml = function (myxml) {
    zotero.Debug('CSL_NODEJS.makeXml', 3);
    var ret, topnode;
    if (!myxml) {
        myxml = "<docco><bogus/></docco>";
    }
    myxml = myxml.replace(/\s*<\?[^>]*\?>\s*\n*/g, "");
    myxml = myxml.replace(/<style\s/, "<cslstyle ").replace("</style", "</cslstyle");
    myxml = myxml.trim();
    //console.log(myxml);
    //process.exit();
    //console.error(myxml);
    //process.exit();
    var doc = this.parser.parseFromString(myxml, "application/xml");
    //console.log("doc : " + doc.nodeName + " : " + doc.nodeValue);
    //console.log(doc);
    var firstChild = doc.firstChild;
    //console.log("firstChild : " + firstChild.nodeName + " : " + firstChild.nodeValue);
    var cslstylenodes = doc.getElementsByTagName('cslstyle');
    var snode = cslstylenodes.item(0);
    //zotero.Debug("snode : " + snode.nodeName + " : " + snode.nodeValue);
    
    if(snode){
        return snode;
    }
    else{
        return firstChild;
    }
};
CSL_NODEJS_JSDOM.prototype.insertChildNodeAfter = function (parent,node,pos,datexml) {
    zotero.Debug('CSL_NODEJS.insertChildNodeAfter', 3);
    var myxml, xml;
    myxml = this.importNode(node.ownerDocument, datexml);
    parent.replaceChild(myxml, node);
    return parent;
 };
CSL_NODEJS_JSDOM.prototype.insertPublisherAndPlace = function(myxml) {
    zotero.Debug('CSL_NODEJS.insertPublisherAndPlace', 5);
    var group = myxml.getElementsByTagName("group");
    for (var i = 0, ilen = group.length; i < ilen; i += 1) {
        var node = group.item(i);
        if (node.childNodes.length === 2) {
            var twovars = [];
            for (var j = 0, jlen = 2; j < jlen; j += 1) {
                var child = node.childNodes.item(j);
                if (child.childNodes.length === 0) {
                    twovars.push(child.getAttribute('variable'));
                    if (child.getAttribute('suffix')
                        || child.getAttribute('prefix')) {
                        twovars = [];
                        break;
                    }
                }
            }
            if (twovars.indexOf("publisher") > -1 && twovars.indexOf("publisher-place") > -1) {
                node.setAttribute('has-publisher-and-publisher-place', true);
            }
        }
    }
};
CSL_NODEJS_JSDOM.prototype.addMissingNameNodes = function(myxml) {

    var nameslist = myxml.getElementsByTagName("names");
    for (var i = 0, ilen = nameslist.length; i < ilen; i += 1) {
        var names = nameslist.item(i);
        var namelist = names.getElementsByTagName("name");
        if ((!namelist || namelist.length === 0)
            && names.parentNode.tagName.toLowerCase() !== "substitute") {
        
            var doc = names.ownerDocument;
            var name = doc.createElement("name");
            names.appendChild(name);
        }
    };
};

CSL_NODEJS_JSDOM.prototype.addInstitutionNodes = function(myxml) {
    zotero.Debug('CSL_NODEJS.addInstitutionNodes');
    //zotero.Debug("myxml : " + myxml.nodeName + " : " + myxml.nodeValue);
    /*
    var names, thenames, institution, theinstitution, name, thename, xml, pos, len;
    names = myxml.getElementsByTagName("names");
    for (pos = 0, len = names.length; pos < len; pos += 1) {
        thenames = names.item(pos);
        name = thenames.getElementsByTagName("name");
        if (name.length == 0) {
            continue;
        }
        institution = thenames.getElementsByTagName("institution");
        if (institution.length == 0) {
            theinstitution = this.importNode(myxml.ownerDocument, this.institution);
            theinstitutionpart = theinstitution.getElementsByTagName("institution-part").item(0);
            thename = name.item(0);
            thenames.insertBefore(theinstitution, thename.nextSibling);
        }
    }
    */
    var names, thenames, institution, theinstitution, name, thename, xml, pos, len;
    var CSL_INSTITUTION_KEYS = [
        "font-style",
        "font-variant",
        "font-weight",
        "text-decoration",
        "text-case"
    ];
    names = myxml.getElementsByTagName("names");
    for (pos = 0, len = names.length; pos < len; pos += 1) {
        thenames = names.item(pos);
        name = thenames.getElementsByTagName("name");
        if (name.length == 0) {
            continue;
        }
        institution = thenames.getElementsByTagName("institution");
        if (institution.length == 0) {
            theinstitution = this.importNode(myxml.ownerDocument, this.institution);
            theinstitutionpart = theinstitution.getElementsByTagName("institution-part").item(0);
            thename = name.item(0);
            thenames.insertBefore(theinstitution, thename.nextSibling);
            for (var j = 0, jlen = CSL_INSTITUTION_KEYS.length; j < jlen; j += 1) {
                var attrname = CSL_INSTITUTION_KEYS[j];
                var attrval = thename.getAttribute(attrname);
                if (attrval) {
                    theinstitutionpart.setAttribute(attrname, attrval);
                }
            }
            var nameparts = thename.getElementsByTagName("name-part");
            for (var j = 0, jlen = nameparts.length; j < jlen; j += 1) {
                if ('family' === nameparts[j].getAttribute('name')) {
                    for (var k = 0, klen = CSL_INSTITUTION_KEYS.length; k < klen; k += 1) {
                        var attrname = CSL_INSTITUTION_KEYS[k];
                        var attrval = nameparts[j].getAttribute(attrname);
                        if (attrval) {
                            theinstitutionpart.setAttribute(attrname, attrval);
                        }
                    }
                }
            }
        }
    }
    zotero.Debug("done with addInstitutionNodes");
};

CSL_NODEJS_JSDOM.prototype.flagDateMacros = function(myxml) {
    var pos, len, thenode, thedate;
    nodes = myxml.getElementsByTagName("macro");
    for (pos = 0, len = nodes.length; pos < len; pos += 1) {
        thenode = nodes.item(pos);
        thedate = thenode.getElementsByTagName("date");
        if (thedate.length) {
            thenode.setAttribute('macro-has-date', 'true');
        }
    }
};


exports.CSL_NODEJS_JSDOM = CSL_NODEJS_JSDOM;