path: root/BibLaTeX.js

{
	"translatorID": "b6e39b57-8942-4d11-8259-342c46ce395f",
	"translatorType": 2,
	"label": "BibLaTeX",
	"creator": "Simon Kornblith, Richard Karnesky and Anders Johansson",
	"target": "bib",
	"minVersion": "2.1.9",
	"maxVersion": "null",
	"priority": 100,
	"inRepository": true,
	"configOptions":{"getCollections": true},
	"displayOptions": {
		"exportCharset": "UTF-8",
		"exportNotes": false,
		"exportFileData": false,
		"useJournalAbbreviation": false
	},
	"lastUpdated": "2014-08-25 06:43:15"
}


//%a = first listed creator surname
//%y = year
//%t = first word of title
var citeKeyFormat = "%a_%t_%y";


var fieldMap = {
	location: "place",
	chapter: "chapter",
	edition: "edition",
	title: "title",
	volume: "volume",
	rights: "rights", //it's rights in zotero nowadays
	isbn: "ISBN",
	issn: "ISSN",
	url: "url",
	doi: "DOI",
	series: "series",
	shorttitle: "shortTitle",
	abstract: "abstractNote",
	volumes: "numberOfVolumes",
	version: "version",
	eventtitle: "conferenceName",
	pages: "pages",
	pagetotal: "numPages"
};
//more conversions done below with special rules

/**
 * Identifiers from item.extra
 * Copied from BibTeX
 */
// Exported in BibTeX and BibLaTeX
var revExtraIds = {
	LCCN: 'lccn',
	MR: 'mrnumber',
	Zbl: 'zmnumber',
	PMCID: 'pmcid',
	PMID: 'pmid'
};

// Imported by BibTeX. Exported by BibLaTeX only
var revEprintIds = {
	// eprinttype: Zotero label
	
	// From BibLaTeX manual
	arXiv: 'arxiv', // Sorry, but no support for eprintclass yet
	JSTOR: 'jstor',
	//PMID: 'pubmed', // Not sure if we should do this instead
	HDL: 'hdl',
	GoogleBooksID: 'googlebooks'
}

function parseExtraFields(extra) {
	var lines = extra.split(/[\r\n]+/);
	var fields = [];
	for(var i=0; i<lines.length; i++) {
		var rec = { raw: lines[i] };
		var line = lines[i].trim();
		var splitAt = line.indexOf(':');
		if(splitAt > 1) {
			rec.field = line.substr(0,splitAt).trim();
			rec.value = line.substr(splitAt + 1).trim();
		}
		fields.push(rec);
	}
	return fields;
}

function extraFieldsToString(extra) {
	var str = '';
	for(var i=0; i<extra.length; i++) {
		if(!extra[i].raw) {
			str += '\n' + extra[i].field + ': ' + extra[i].value;
		} else {
			str += '\n' + extra[i].raw;
		}
	}
	
	return str.substr(1);
}

//POTENTIAL ISSUES
//accessDate:"accessDate", //only written on attached webpage snapshots by zotero



var zotero2biblatexTypeMap = {
	"book": "book",
	"bookSection": "incollection",
	"journalArticle": "article",
	"magazineArticle": "article",
	"newspaperArticle": "article",
	"thesis": "thesis",
	"letter": "letter",
	"manuscript": "unpublished",
	"interview": "misc",
	"film": "movie",
	"artwork": "artwork",
	"webpage": "online",
	"conferencePaper": "inproceedings",
	"report": "report",
	"bill": "legislation",
	"case": "jurisdiction",
	"hearing": "jurisdiction",
	"patent": "patent",
	"statute": "legislation",
	"email": "letter",
	"map": "misc",
	"blogPost": "online",
	"instantMessage": "misc",
	"forumPost": "online",
	"audioRecording": "audio",
	"presentation": "unpublished",
	"videoRecording": "video",
	"tvBroadcast": "misc",
	"radioBroadcast": "misc",
	"podcast": "audio",
	"computerProgram": "software",
	"document": "misc",
	"encyclopediaArticle": "inreference",
	"dictionaryEntry": "inreference"
};


var alwaysMap = {
	"|": "{\\textbar}",
	"<": "{\\textless}",
	">": "{\\textgreater}",
	"~": "{\\textasciitilde}",
	"^": "{\\textasciicircum}",
	"\\": "{\\textbackslash}",
	"{": "\\{",
	"}": "\\}"
};


//to map ISO language codes (tries to follow IETF RFC5646) to babel
//language codes used in biblatex. Taken from Babel manual 3.9h.
var babelLanguageMap = {
	"af": "afrikaans",
	"ar": "arabic",
	//bahasa (see malay and indonesian)
	"eu": "basque",
	"br": "breton",
	"bg": "bulgarian",
	"ca": "catalan",
	"hr": "croatian",
	"cz": "czech",
	"da": "danish",
	"nl": "dutch",
	"en": {
		"": "english", //same as american
		"US": "american",
		"GB": "british",
		"CA": "canadian",
		"AU": "australian",
		"NZ": "newzealand"
	},
	"eo": "esperanto",
	"et": "estonian",
	//ethiop (package for many languages)
	"fa": "farsi",
	"fi": "finnish",
	"fr": {
		"": "french",
		"CA": "canadien"
		//frenchle (a special package)
	},
	"fur": "friulan",
	"gl": "galician",
	"de": {
		"": "german",
		"AT": "austrian",
		"DE-1996": "ngerman", //these are valid IETF language codes
		"AT-1996": "naustrian",
		"1996": "ngerman"
	},
	"el": {
		"": "greek",
		"polyton": "polutonikogreek"
	},
	"he": "hebrew",
	"hi": "hindi",
	"is": "icelandic",
	"id": "indonesian", //aliases: bahasai, indon
	"ia": "interlingua",
	"ga": "irish",
	"it": "italian",
	"ja": "japanese",
	"la": "latin",
	"lv": "latvian",
	"lt": "lithuanian",
	"dsb": "lowersorbian",
	"hu": "magyar",
	"zlm": "malay", //aliases: bahasam, melayu (currently, there's no
	//real difference between bahasam and bahasai in babel)
	"mn": "mongolian",
	"se": "samin",
	"nn": "nynorsk", //nynorsk
	"nb": "norsk", //bokmål
	"no": "norwegian", //"no" could be used, norwegian is an alias for "norsk" in babel
	"zh": {
		"": "pinyin", //only supported chinese in babel is the romanization pinyin?
		"Latn": "pinyin"
	},
	"pl": "polish",
	"pt": {
		"": "portuguese",
		"PT": "portuguese",
		"BR": "brazil"
	},
	"ro": "romanian",
	"rm": "romansh",
	"ru": "russian",
	"gd": "scottish",
	"sr": {
		"": "serbian", //latin script as default?
		"Cyrl": "serbianc",
		"Latn": "serbian",
	},
	"sk": "slovak",
	"sl": "slovene",
	//spanglish (pseudo language)
	"es": "spanish",
	"sv": "swedish",
	"th": "thaicjk", //thaicjk preferred?
	"tr": "turkish",
	"tk": "turkmen",
	"uk": "ukrainian",
	"hsb": "uppersorbian",
	"vi": "vietnamese",
	"cy": "welsh",
};


// some fields are, in fact, macros.  If that is the case then we should not put the
// data in the braces as it will cause the macros to not expand properly
function writeField(field, value, isMacro, noEscape) {
	if (!value && typeof value != "number") return;
	value = value + ""; // convert integers to strings
	Zotero.write(",\n\t" + field + " = ");
	if (!isMacro) Zotero.write("{");
	// url field is preserved, for use with \href and \url
	// Other fields (DOI?) may need similar treatment
	if (!noEscape && !isMacro && !(field == "url" || field == "doi" || field == "file" || field == "lccn")) {
		//var titleCase = isTitleCase(value);	//figure this out before escaping all the characters
		// I hope these are all the escape characters! (except for < > which are handled later)
		value = value.replace(/[|\~\^\\\{\}]/g, mapEscape).replace(/[\#\$\%\&\_]/g, "\\$&");
		//convert the HTML markup allowed in Zotero for rich text to TeX
		value = mapHTMLmarkup(value);
		//escape < > if mapHTMLmarkup did not convert some
		value = value.replace(/[<>]/g, mapEscape);


		// Case of words with uppercase characters in non-initial positions is preserved with braces.
		// we're looking at all unicode letters
		var protectCaps = new ZU.XRegExp("\\b\\p{Letter}+\\p{Uppercase_Letter}\\p{Letter}*", 'g')
		if (field != "pages") {
			value = ZU.XRegExp.replace(value, protectCaps, "{$0}");
		}

		// Page ranges should use double dash
		if (field == "pages") {
			value = value.replace(/[-\u2012-\u2015\u2053]+/g,"--");
		}
	}
	//we write utf8
	//convert the HTML markup allowed in Zotero for rich text to TeX; excluding doi/url/file shouldn't be necessary, but better to be safe;
	if (!((field == "url") || (field == "doi") || (field == "file"))) value = mapHTMLmarkup(value);
	Zotero.write(value);
	if (!isMacro) Zotero.write("}");
}

function mapHTMLmarkup(characters) {
	//converts the HTML markup allowed in Zotero for rich text to TeX
	//since  < and > have already been escaped, we need this rather hideous code - I couldn't see a way around it though.
	//italics and bold
	characters = characters.replace(/\{\\textless\}i\{\\textgreater\}(((?!\{\\textless\}\/i{\\textgreater\}).)+)\{\\textless\}\/i{\\textgreater\}/, "\\textit{$1}").replace(/\{\\textless\}b\{\\textgreater\}(((?!\{\\textless\}\/b{\\textgreater\}).)+)\{\\textless\}\/b{\\textgreater\}/g, "\\textbf{$1}");
	//sub and superscript
	characters = characters.replace(/\{\\textless\}sup\{\\textgreater\}(((?!\{\\textless\}\/sup\{\\textgreater\}).)+)\{\\textless\}\/sup{\\textgreater\}/g, "\$^{\\textrm{$1}}\$").replace(/\{\\textless\}sub\{\\textgreater\}(((?!\{\\textless\}\/sub\{\\textgreater\}).)+)\{\\textless\}\/sub\{\\textgreater\}/g, "\$_{\\textrm{$1}}\$");
	//two variants of small caps
	characters = characters.replace(/\{\\textless\}span\sstyle=\"small\-caps\"\{\\textgreater\}(((?!\{\\textless\}\/span\{\\textgreater\}).)+)\{\\textless\}\/span{\\textgreater\}/g, "\\textsc{$1}").replace(/\{\\textless\}sc\{\\textgreater\}(((?!\{\\textless\}\/sc\{\\textgreater\}).)+)\{\\textless\}\/sc\{\\textgreater\}/g, "\\textsc{$1}");
	return characters;
}

function mapEscape(character) {
	return alwaysMap[character];
}

// a little substitution function for BibTeX keys, where we don't want LaTeX 
// escaping, but we do want to preserve the base characters

function tidyAccents(s) {
	var r = s.toLowerCase();

	// XXX Remove conditional when we drop Zotero 2.1.x support
	// This is supported in Zotero 3.0 and higher
	if (ZU.removeDiacritics !== undefined)
		r = ZU.removeDiacritics(r, true);
	else {
		// We fall back on the replacement list we used previously
		r = r.replace(new RegExp("[ä]", 'g'), "ae");
		r = r.replace(new RegExp("[ö]", 'g'), "oe");
		r = r.replace(new RegExp("[ü]", 'g'), "ue");
		r = r.replace(new RegExp("[àáâãå]", 'g'), "a");
		r = r.replace(new RegExp("æ", 'g'), "ae");
		r = r.replace(new RegExp("ç", 'g'), "c");
		r = r.replace(new RegExp("[èéêë]", 'g'), "e");
		r = r.replace(new RegExp("[ìíîï]", 'g'), "i");
		r = r.replace(new RegExp("ñ", 'g'), "n");
		r = r.replace(new RegExp("[òóôõ]", 'g'), "o");
		r = r.replace(new RegExp("œ", 'g'), "oe");
		r = r.replace(new RegExp("[ùúû]", 'g'), "u");
		r = r.replace(new RegExp("[ýÿ]", 'g'), "y");
	}

	return r;
};

var numberRe = /^[0-9]+/;
// Below is a list of words that should not appear as part of the citation key
// in includes the indefinite articles of English, German, French and Spanish, as well as a small set of English prepositions whose
// force is more grammatical than lexical, i.e. which are likely to strike many as 'insignificant'.
// The assumption is that most who want a title word in their key would prefer the first word of significance.
var citeKeyTitleBannedRe = /\b(a|an|the|some|from|on|in|to|of|do|with|der|die|das|ein|eine|einer|eines|einem|einen|un|une|la|le|l\'|el|las|los|al|uno|una|unos|unas|de|des|del|d\')(\s+|\b)/g;
var citeKeyConversionsRe = /%([a-zA-Z])/;
var citeKeyCleanRe = /[^a-z0-9\!\$\&\*\+\-\.\/\:\;\<\>\?\[\]\^\_\`\|]+/g;

var citeKeyConversions = {
	"a": function (flags, item) {
		if (item.creators && item.creators[0] && item.creators[0].lastName) {
			return item.creators[0].lastName.toLowerCase().replace(/ /g, "_").replace(/,/g, "");
		}
		return "";
	},
	"t": function (flags, item) {
		if (item["title"]) {
			return item["title"].toLowerCase().replace(citeKeyTitleBannedRe, "").split(/\s+/g)[0];
		}
		return "";
	},
	"y": function (flags, item) {
		if (item.date) {
			var date = Zotero.Utilities.strToDate(item.date);
			if (date.year && numberRe.test(date.year)) {
				return date.year;
			}
		}
		return "????";
	}
}

//checks whether an item contains any creator of type ctype
function creatorCheck(item, ctype) {
	if (item.creators && item.creators.length) {
		for (var i=0; i<item.creators.length; i++) {
			if (item.creators[i].creatorType == ctype) {
				return true; //found a ctype creator
			}
		}
	}
	//didn't find any ctype creator (or no creators at all)
	return false;
}

	function buildCiteKey(item, citekeys) {
		var basekey = "";
		var counter = 0;
		citeKeyFormatRemaining = citeKeyFormat;
		while (citeKeyConversionsRe.test(citeKeyFormatRemaining)) {
			if (counter > 100) {
				Zotero.debug("Pathological BibTeX format: " + citeKeyFormat);
				break;
			}
			var m = citeKeyFormatRemaining.match(citeKeyConversionsRe);
			if (m.index > 0) {
				//add data before the conversion match to basekey
				basekey = basekey + citeKeyFormatRemaining.substr(0, m.index);
			}
			var flags = ""; // for now
			var f = citeKeyConversions[m[1]];
			if (typeof (f) == "function") {
				var value = f(flags, item);
				Zotero.debug("Got value " + value + " for %" + m[1]);
				//add conversion to basekey
				basekey = basekey + value;
			}
			citeKeyFormatRemaining = citeKeyFormatRemaining.substr(m.index + m.length);
			counter++;
		}
		if (citeKeyFormatRemaining.length > 0) {
			basekey = basekey + citeKeyFormatRemaining;
		}

		// for now, remove any characters not explicitly known to be allowed;
		// we might want to allow UTF-8 citation keys in the future, depending
		// on implementation support.
		//
		// no matter what, we want to make sure we exclude
		// " # % ' ( ) , = { } ~ and backslash
		// however, we want to keep the base characters 

		basekey = tidyAccents(basekey);
		basekey = basekey.replace(citeKeyCleanRe, "");
		var citekey = basekey;
		var i = 0;
		while (citekeys[citekey]) {
			i++;
			citekey = basekey + "-" + i;
		}
		citekeys[citekey] = true;
		return citekey;
	}
	
var filePathSpecialChars = '\\\\:;{}$'; // $ for Mendeley
var encodeFilePathRE = new RegExp('[' + filePathSpecialChars + ']', 'g');

function encodeFilePathComponent(value) {
	return value.replace(encodeFilePathRE, "\\$&");
}

	function doExport() {
		//Zotero.write("% biblatex export generated by Zotero "+Zotero.Utilities.getVersion());
		// to make sure the BOM gets ignored
		Zotero.write("\n");

		var first = true;
		var citekeys = new Object();
		var item;
		while (item = Zotero.nextItem()) {
			//don't export standalone notes and attachments
			if (item.itemType == "note" || item.itemType == "attachment") continue;

			var noteused = false; //a switch for keeping track whether the
			//field "note" has been written to
			// determine type
			var type = zotero2biblatexTypeMap[item.itemType];
			if (typeof (type) == "function") {
				type = type(item);
			}

			//inbook is reasonable at times, using a bookauthor should
			//indicate this
			if(item.itemType == "bookSection" &&
			   creatorCheck(item, "bookAuthor")) type = "inbook";

			//a book without author but with editors is a collection
			if(item.itemType == "book" && !creatorCheck(item,"author") &&
			   creatorCheck(item, "editor")) type = "collection";

			//biblatex recommends us to use mvbook for multi-volume books
			if (type == "book" && item.volume) type = "mvbook"

			if (!type) type = "misc";

			var citekey = "";
			if (!citekey) {
				// create a unique citation key
				citekey = buildCiteKey(item, citekeys);
			}

			// write citation key (removed the comma)
			Zotero.write((first ? "" : "\n\n") + "@" + type + "{" + citekey);
			first = false;

			for (var field in fieldMap) {
				if (item[fieldMap[field]]) {
					writeField(field, item[fieldMap[field]]);
				}
			}

			// Fields needing special treatment and not easily translatable via fieldMap
			//e.g. where fieldname translation is dependent upon type, or special transformations
			//has to be made

			//all kinds of numbers
			if (item.reportNumber || item.seriesNumber || item.patentNumber || item.billNumber || item.episodeNumber || item.number) {
				writeField("number", item.reportNumber || item.seriesNumber || item.patentNumber || item.billNumber || item.episodeNumber || item.number);
			}

			//split numeric and nonnumeric issue specifications (for journals) into "number" and "issue"
			if (item.issue) { //issue
				var jnumber = parseInt(item.issue);
				if (!isNaN(jnumber)) {
					writeField("number", jnumber);
				} else {
					writeField("issue", item.issue);
				}
			}


			//publicationTitles and special titles
			if (item.publicationTitle) {
				if (item.itemType == "bookSection" || item.itemType == "conferencePaper" || item.itemType == "dictionaryEntry" || item.itemType == "encyclopediaArticle") {
					writeField("booktitle", item.publicationTitle);
				} else if (item.itemType == "magazineArticle" || item.itemType == "newspaperArticle") {
					writeField("journaltitle", item.publicationTitle);
				} else if (item.itemType == "journalArticle") {
					if (Zotero.getOption("useJournalAbbreviation")) {
						writeField("journaltitle", item.journalAbbreviation);
					} else {
						writeField("journaltitle", item.publicationTitle);
						writeField("shortjournal", item.journalAbbreviation);
					}
				}
			}

			if (item.websiteTitle || item.forumTitle || item.blogTitle || item.programTitle) {
				writeField("titleaddon", item.websiteTitle || item.forumTitle || item.blogTitle || item.programTitle);
			}


			//publishers
			if (item.publisher) {
				if (item.itemType == "thesis" || item.itemType == "report") {
					writeField("institution", item.publisher);
				} else {
					writeField("publisher", item.publisher);
				}
			}

			//things concerning "type"
			if (item.itemType == "letter") {
				if (item.letterType) {
					writeField("type", item.letterType);
				} else {
					writeField("type", "Letter"); //this isn't optimal, perhaps later versions of biblatex will add some suitable localization key
				}
			} else if (item.itemType == "email") {
				writeField("type", "E-mail");
			} else if (item.itemType == "thesis" &&
					   (!item.thesisType || item.thesisType.search(/ph\.?d/i) != -1)) {
				writeField("type", "phdthesis");
			} else if (item.manuscriptType || item.thesisType || item.websiteType || item.presentationType || item.reportType || item.mapType) {
				writeField("type", item.manuscriptType || item.thesisType || item.websiteType || item.presentationType || item.reportType || item.mapType);
			}

			if (item.presentationType || item.manuscriptType) {
				writeField("howpublished", item.presentationType || item.manuscriptType);
			}

			//case of specific eprint-archives in archive-fields
			if (item.archive && item.archiveLocation) {
				if (item.archive == "arXiv" || item.archive == "arxiv") {
					writeField("eprinttype", "arxiv");
					writeField("eprint", item.archiveLocation);
					if (item.callNumber) { //assume call number is used for arxiv class
						writeField("eprintclass", item.callNumber)
					}
				} else if (item.archive = "JSTOR" || item.archive == "jstor") {
					writeField("eprinttype", "jstor");
					writeField("eprint", item.archiveLocation);
				} else if (item.archive = "PubMed" || item.archive == "pubmed") {
					writeField("eprinttype", "pubmed");
					writeField("eprint", item.archiveLocation);
				} else if (item.archive = "HDL" || item.archive == "hdl") {
					writeField("eprinttype", "hdl");
					writeField("eprint", item.archiveLocation);
				} else if (item.archive = "googlebooks" || item.archive == "Google Books") {
					writeField("eprinttype", "googlebooks");
					writeField("eprint", item.archiveLocation);
				}
			}

			//presentations have a meetingName field which we want to
			//map to note
			if (item.meetingName) {
				writeField("note", item.meetingName);
				noteused = true;
			}

			if (item.creators && item.creators.length) {
				// split creators into subcategories
				var author = "";
				var bookauthor = "";
				var commentator = "";
				var editor = "";
				var editora = "";
				var editorb = "";
				var holder = "";
				var translator = "";
				var noEscape = false;

				for (var i=0; i<item.creators.length; i++) {
					var creator = item.creators[i];
					var creatorString;

					if (creator.firstName) {
						var fname = creator.firstName.split(/\s*,!?\s*/);
						fname.push(fname.shift()); // If we have a Jr. part(s), it should precede first name
						creatorString = creator.lastName + ", " + fname.join(', ');
					} else {
						creatorString = creator.lastName;
					}
					
					creatorString = creatorString.replace(/[|\<\>\~\^\\\{\}]/g, mapEscape)
						.replace(/([\#\$\%\&\_])/g, "\\$1");
																				
					if (creator.fieldMode == true) { // fieldMode true, assume corporate author
						creatorString = "{" + creatorString + "}";
						noEscape = true;
					} else {
						creatorString = creatorString.replace(/ (and) /gi, ' {$1} ');
					}

					if (creator.creatorType == "author" || creator.creatorType == "interviewer" || creator.creatorType == "director" || creator.creatorType == "programmer" || creator.creatorType == "artist" || creator.creatorType == "podcaster" || creator.creatorType == "presenter") {
						author += " and " + creatorString;
					} else if (creator.creatorType == "bookAuthor") {
						bookauthor += " and " + creatorString;
					} else if (creator.creatorType == "commenter") {
						commentator += " and " + creatorString;
					} else if (creator.creatorType == "editor") {
						editor += " and " + creatorString;
					} else if (creator.creatorType == "inventor") {
						holder += " and " + creatorString;
					} else if (creator.creatorType == "translator") {
						translator += " and " + creatorString;
					} else if (creator.creatorType == "seriesEditor") { //let's call them redacors
						editorb += " and " + creatorString;
					} else { // the rest into editora with editoratype = collaborator
						editora += " and " + creatorString;
					}
				}

				//remove first " and " string
				if (author) {
					writeField("author", author.substr(5), false, noEscape);
				}
				if (bookauthor) {
					writeField("bookauthor", bookauthor.substr(5), false, noEscape);
				}
				if (commentator) {
					writeField("commentator", commenter.substr(5), false, noEscape);
				}
				if (editor) {
					writeField("editor", editor.substr(5), false, noEscape);
				}
				if (editora) {
					writeField("editora", editora.substr(5), false, noEscape);
					writeField("editoratype", "collaborator");
				}
				if (editorb) {
					writeField("editorb", editorb.substr(5), false, noEscape);
					writeField("editorbtype", "redactor");
				}
				if (holder) {
					writeField("holder", holder.substr(5), false, noEscape);
				}
				if (translator) {
					writeField("translator", translator.substr(5), false, noEscape);
				}
			}

			if (item.accessDate) {
				writeField("urldate", Zotero.Utilities.strToISO(item.accessDate));
			}

			//TODO enable handling of date ranges when that's added to zotero
			if (item.date) {
				writeField("date", Zotero.Utilities.strToISO(item.date));
			}

			//Map Languages to biblatex-field "langid" (used for
			//hyphenation with a correct setting of the "autolang" option)
			//if possible. See babelLanguageMap above for languagecodes to use
			if (item.language) {
				var langcode = item.language.match(/^([a-z]{2,3})(?:[^a-z](.+))?$/i); //not too strict
				if(langcode){
					var lang = babelLanguageMap[langcode[1]];
					if (typeof lang == 'string') {
						//if there are no variants for this language
						writeField("langid", lang);
					} else if (typeof lang == 'object') {
						var variant = lang[langcode[2]];
						if (variant) {
							writeField("langid", variant);
						} else {
							writeField("langid", lang[""]); //use default variant
						}
					}
				}
			}

			if(item.extra) {
				// Export identifiers
				var extraFields = parseExtraFields(item.extra);
				// Dedicated fields
				for(var i=0; i<extraFields.length; i++) {
					var rec = extraFields[i];
					if(!rec.field) continue;
					
					if(!revExtraIds[rec.field] && !revEprintIds[rec.field]) continue;
					
					var value = rec.value.trim();
					if(!value) continue;
					
					var label;
					if(label = revExtraIds[rec.field]) {
						writeField(label, '{'+value+'}', true);
					} else if (label = revEprintIds[rec.field]) {
						writeField('eprinttype', label);
						writeField('eprint', '{' + value + '}', true);
					}
					extraFields.splice(i, 1);
					i--;
				}
				
				var extra = extraFieldsToString(extraFields);
				if(extra && !noteused) writeField("note", extra);
			}

			if (item.tags && item.tags.length) {
				var tagString = "";
				for (var i=0; i<item.tags.length; i++) {
					tagString += ", " + item.tags[i].tag;
				}
				writeField("keywords", tagString.substr(2));
			}


			if (item.notes && Zotero.getOption("exportNotes")) {
				for (var i=0; i<item.notes.length; i++) {
					var note = item.notes[i];
					writeField("annotation", Zotero.Utilities.unescapeHTML(note["note"]));
				}
			}

			if (item.attachments) {
				var attachmentString = "";

				for (var i=0; i<item.attachments.length; i++) {
					var attachment = item.attachments[i];
					if (Zotero.getOption("exportFileData") && attachment.saveFile) {
						attachment.saveFile(attachment.defaultPath, true);
						attachmentString += ";" + encodeFilePathComponent(attachment.title) + ":"
							+ encodeFilePathComponent(attachment.defaultPath) + ":"
							+ encodeFilePathComponent(attachment.mimeType);
					} else if (attachment.localPath) {
						attachmentString += ";" + encodeFilePathComponent(attachment.title) + ":"
							+ encodeFilePathComponent(attachment.localPath) + ":"
							+ encodeFilePathComponent(attachment.mimeType);
					}
				}

				if (attachmentString) {
					writeField("file", attachmentString.substr(1));
				}
			}

			Zotero.write("\n}");
		}
	}