Team:Slovenia/libraries/bibtexparse-js
// modified by iGEM Team Slovenia 2016
/* start zoteroBibtexParse 0.0.13
https://github.com/apcshields/zotero-bibtex-parse
- /
// Original work by Henrik Muehe (c) 2010 // // CommonJS port by Mikola Lysenko 2013 // // Port to Browser lib by ORCID / RCPETERS // // Additions and slight changes by apcshields, Jul 2014. // (Some of which bring this back closer to Lysenko's version.) // // Issues: // no comment handling within strings // no string concatenation // no variable values yet // Grammar implemented here: // bibtex -> (string | preamble | comment | entry)*; // string -> '@STRING' '{' key_equals_value '}'; // preamble -> '@PREAMBLE' '{' value '}'; // comment -> '@COMMENT' '{' value '}'; // entry -> '@' key '{' key ',' key_value_list '}'; // key_value_list -> key_equals_value (',' key_equals_value)*; // key_equals_value -> key '=' value; // value -> value_quotes | value_braces | key; // value_quotes -> '"' .*? '"'; // not quite // value_braces -> '{' .*? '"'; // not quite (function (exports) {
function BibtexParser() {
this.pos = 0;
this.input = "";
this.entries = [];
this.strings = { // Added from Mikola Lysenko's bibtex-parser. -APCS
JAN: "January",
FEB: "February",
MAR: "March",
APR: "April",
MAY: "May",
JUN: "June",
JUL: "July",
AUG: "August",
SEP: "September",
OCT: "October",
NOV: "November",
DEC: "December"
};
this.currentEntry = "";
this.setInput = function (t) {
this.input = t;
};
this.getEntries = function () {
return this.entries;
};
this.isWhitespace = function (s) {
return (s == ' ' || s == '\r' || s == '\t' || s == '\n');
};
this.match = function (s, canCommentOut) {
if (canCommentOut == undefined || canCommentOut == null)
canCommentOut = true;
this.skipWhitespace(canCommentOut);
if (this.input.substring(this.pos, this.pos + s.length) == s) {
this.pos += s.length;
} else {
throw "Token mismatch, expected '" + s + "', found '"
+ this.input.substr(this.pos, s.length) + "'";
}
this.skipWhitespace(canCommentOut);
};
this.tryMatch = function (s, canCommentOut) {
if (canCommentOut == undefined || canCommentOut == null)
canComment = true;
this.skipWhitespace(canCommentOut);
return this.input.substring(this.pos, this.pos + s.length) == s;
};
/* when search for a match all text can be ignored, not just white space */
this.matchAt = function () {
while (this.input.length > this.pos && this.input[this.pos] != '@') {
this.pos++;
}
return this.input[this.pos] == '@';
};
this.skipWhitespace = function (canCommentOut) {
while (this.isWhitespace(this.input[this.pos])) {
this.pos++;
}
if (this.input[this.pos] == "%" && canCommentOut == true) {
while (this.input[this.pos] != "\n") {
this.pos++;
}
this.skipWhitespace(canCommentOut);
}
};
this.value_braces = function () {
var bracecount = 0;
this.match("{", false);
var start = this.pos;
var escaped = false;
while (true) {
if (!escaped) {
if (this.input[this.pos] == '}') {
if (bracecount > 0) {
bracecount--;
} else {
var end = this.pos;
this.match("}", false);
return this.input.substring(start, end);
}
} else if (this.input[this.pos] == '{') {
bracecount++;
} else if (this.pos >= this.input.length - 1) {
throw "Unterminated value";
}
}
escaped = !!(this.input[this.pos] == '\\' && escaped == false);
/*changed*/
this.pos++;
}
};
this.value_comment = function () {
var str = ;
var brcktCnt = 0;
while (!(this.tryMatch("}", false) && brcktCnt == 0)) {
str = str + this.input[this.pos];
if (this.input[this.pos] == '{')
brcktCnt++;
if (this.input[this.pos] == '}')
brcktCnt--;
if (this.pos >= this.input.length - 1) {
throw "Unterminated value:" + this.input.substring(start);
}
this.pos++;
}
return str;
};
this.value_quotes = function () {
this.match('"', false);
var start = this.pos;
var escaped = false;
while (true) {
if (!escaped) {
if (this.input[this.pos] == '"') {
var end = this.pos;
this.match('"', false);
return this.input.substring(start, end);
} else if (this.pos >= this.input.length - 1) {
throw "Unterminated value:" + this.input.substring(start);
}
}
escaped = !!(this.input[this.pos] == '\\' && escaped == false); // changed
this.pos++;
}
};
this.single_value = function () {
var start = this.pos;
if (this.tryMatch("{")) {
return this.value_braces();
} else if (this.tryMatch('"')) {
return this.value_quotes();
} else {
var k = this.key();
if (this.strings[k.toUpperCase()]) { // Added from Mikola Lysenko's bibtex-parser. -APCS
return this.strings[k];
} else if (k.match("^[0-9]+$")) {
return k;
} else {
throw "Value expected:" + this.input.substring(start);
}
}
};
this.value = function () {
var values = [];
values.push(this.single_value());
while (this.tryMatch("#")) {
this.match("#");
values.push(this.single_value());
}
return latexToUTF8.decodeLatex(values.join(""));
};
this.key = function () {
var start = this.pos;
while (true) {
if (this.pos >= this.input.length) {
throw "Runaway key";
}
if (this.input[this.pos].match(/[a-zA-Z0-9+_:\?\.\/\[\]\-]/)) { // Added question marks to handle Zotero going sideways. -APCS
this.pos++;
} else {
return this.input.substring(start, this.pos);
}
}
};
this.key_equals_value = function () {
var key = this.key();
if (this.tryMatch("=")) {
this.match("=");
var val = this.value();
return [key, val];
} else {
throw "... = value expected, equals sign missing:"
+ this.input.substring(this.pos);
}
};
this.key_value_list = function () {
var kv = this.key_equals_value();
this.currentEntry['entryTags'] = {};
this.currentEntry['entryTags'][kv[0].toLowerCase()] = kv[1];
while (this.tryMatch(",")) {
this.match(",");
// fixes problems with commas at the end of a list
if (this.tryMatch("}")) {
break;
}
kv = this.key_equals_value();
this.currentEntry['entryTags'][kv[0].toLowerCase()] = kv[1];
}
};
this.entry_body = function (d) {
this.currentEntry = {};
this.currentEntry['citationKey'] = this.key();
this.currentEntry['entryType'] = d.substring(1);
this.match(",");
this.key_value_list();
this.entries.push(this.currentEntry);
};
this.directive = function () {
this.match("@");
return "@" + this.key();
};
this.preamble = function () {
this.currentEntry = {};
this.currentEntry['entryType'] = 'PREAMBLE';
this.currentEntry['entry'] = this.value_comment();
this.entries.push(this.currentEntry);
};
this.comment = function () {
this.currentEntry = {};
this.currentEntry['entryType'] = 'COMMENT';
this.currentEntry['entry'] = this.value_comment();
this.entries.push(this.currentEntry);
};
this.entry = function (d) {
this.entry_body(d);
};
this.bibtex = function () {
while (this.matchAt()) {
var d = this.directive();
this.match("{");
if (d == "@STRING") {
this.string();
} else if (d == "@PREAMBLE") {
this.preamble();
} else if (d == "@COMMENT") {
this.comment();
} else {
this.entry(d);
}
this.match("}");
}
};
}
function LatexToUTF8() {
this.uniToLatex = {};
this.latexToUni = {
"`A": "À", // begin grave
"`E": "È",
"`I": "Ì",
"`O": "Ò",
"`U": "Ù",
"`a": "à",
"`e": "è",
"`i": "ì",
"`o": "ò",
"`u": "ù",
"\'A": "Á", // begin acute
"\'E": "É",
"\'I": "Í",
"\'O": "Ó",
"\'U": "Ú",
"\'Y": "Ý",
"\'a": "á",
"\'e": "é",
"\'i": "í",
"\'o": "ó",
"\'u": "ú",
"\'y": "ý",
"\"A": "Ä", // begin diaeresis
"\"E": "Ë",
"\"I": "Ï",
"\"O": "Ö",
"\"U": "Ü",
"\"a": "ä",
"\"e": "ë",
"\"i": "ï",
"\"o": "ö",
"\"u": "ü",
"~A": "Ã", // begin tilde
"~N": "Ñ",
"~O": "Õ",
"~a": "ã",
"~n": "ñ",
"~o": "õ",
"rU": "Ů", // begin ring above
"ru": "ů",
"vC": "Č", // begin caron
"vD": "Ď",
"vE": "Ě",
"vN": "Ň",
"vR": "Ř",
"vS": "Š",
"vT": "Ť",
"vZ": "Ž",
"vc": "č",
"vd": "ď",
"ve": "ě",
"vn": "ň",
"vr": "ř",
"vs": "š",
"vt": "ť",
"vz": "ž",
"#": "#", // begin special symbols
"$": "$",
"%": "%",
"&": "&",
"\\": "\\",
"^": "^",
"_": "_",
"{": "{",
"}": "}",
"~": "~",
"\"": "\"",
"\'": "’", // closing single quote
"`": "‘", // opening single quote
"AA": "Å", // begin non-ASCII letters
"AE": "Æ",
"O": "Ø",
"aa": "å",
"ae": "æ",
"o": "ø",
"ss": "ß",
"textcopyright": "©",
"textellipsis": "…",
"textemdash": "—",
"textendash": "–",
"textregistered": "®",
"texttrademark": "™",
"alpha": "α", // begin greek alphabet
"beta": "β",
"gamma": "γ",
"delta": "δ",
"epsilon": "ε",
"zeta": "ζ",
"eta": "η",
"theta": "θ",
"iota": "ι",
"kappa": "κ",
"lambda": "λ",
"mu": "μ",
"nu": "ν",
"xi": "ξ",
"omicron": "ο",
"pi": "π",
"rho": "ρ",
"sigma": "ς",
"tau": "σ",
"upsilon": "τ",
"phi": "υ",
"chi": "φ",
"psi": "χ",
"omega": "ψ"
};
String.prototype.addSlashes = function () {
// no need to do (str+) anymore because 'this' can only be a string
return this.replace(/[\\"']/g, '\\$&').replace(/\u0000/g, '\\0');
};
for (var idx in this.latexToUni) {
if (this.latexToUni[idx].length > this.maxLatexLength)
this.maxLatexLength = this.latexToUni[idx].length;
this.uniToLatex[this.latexToUni[idx]] = idx;
}
this.longestEscapeMatch = function (value, pos) {
var subStringEnd = pos + 1 + this.maxLatexLength <= value.length ?
pos + 1 + this.maxLatexLength : value.length;
var subStr = value.substring(pos + 1, subStringEnd);
while (subStr.length > 0) {
if (subStr in this.latexToUni) {
break;
}
subStr = subStr.substring(0, subStr.length - 1);
}
return subStr;
};
this.decodeLatex = function (value) {
var newVal = ;
var pos = 0;
while (pos < value.length) {
if (value[pos] == '\\') {
var match = this.longestEscapeMatch(value, pos);
if (match.length > 0) {
newVal += this.latexToUni[match];
pos = pos + 1 + match.length;
} else {
newVal += value[pos];
pos++;
}
} else if (value[pos] == '{' || value[pos] == '}') {
pos++;
} else {
newVal += value[pos];
pos++;
}
}
return newVal;
};
this.encodeLatex = function (value) {
var trans = ;
for (var idx = 0; idx < value.length; ++idx) {
var c = value.charAt(idx);
if (c in this.uniToLatex)
trans += '\\' + this.uniToLatex[c];
else
trans += c;
}
return trans;
};
}
var latexToUTF8 = new LatexToUTF8();
exports.toJSON = function (bibtex) {
var b = new BibtexParser();
b.setInput(bibtex);
b.bibtex();
return b.entries;
};
/* added during hackathon don't hate on me */
exports.toBibtex = function (json) {
var out = ;
for (var i in json) {
out += "@" + json[i].entryType;
out += '{';
if (json[i].citationKey)
out += json[i].citationKey + ', ';
if (json[i].entry)
out += json[i].entry;
if (json[i].entryTags) {
var tags = ;
for (jdx in json[i].entryTags) {
if (tags.length != 0)
tags += ', ';
tags += jdx + '= {' + latexToUTF8.encodeLatex(json[i].entryTags[jdx]) + '}';
}
out += tags;
}
out += '}\n\n';
}
console.log(out);
return out;
};
})(typeof exports === 'undefined' ? this['bibtexParse'] = {} : exports);
/* end zoteroBibtexParse */
