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ASCIIMathMLwFallback.js
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executable file
·1484 lines (1411 loc) · 64 KB
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/*
ASCIIMathMLwFallback.js
==============
This file contains JavaScript functions to convert ASCII math notation
to Presentation MathML. The conversion is done while the (X)HTML page
loads, and should work with Firefox/Mozilla/Netscape 7+ and Internet
Explorer 6+MathPlayer (http://www.dessci.com/en/products/mathplayer/).
Just add the next line to your (X)HTML page with this file in the same folder:
<script type="text/javascript" src="ASCIIMathMLwFallback.js"></script>
This is a convenient and inexpensive solution for authoring MathML.
If MathML is not available on the client server, this file contains JavaScript
functions to convert ASCII math notation to TeX allowing serverside rendering
to image files.
ASCIIMathML, Version 1.4.7 Aug 30, 2005, (c) Peter Jipsen http://www.chapman.edu/~jipsen
Modified with TeX conversion for IMG fallback Sept 6, 2006 (c) David Lippman http://www.pierce.ctc.edu/dlippman
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License (at http://www.gnu.org/copyleft/gpl.html)
for more details.
*/
//var AMTcgiloc = "http://www.imathas.com/cgi-bin/mimetex.cgi"; //path to CGI script that
//can render a TeX strin
var AMTcgiloc = null;
var checkForMathML = true; // check if browser can display MathML
var notifyIfNoMathML = false; // display note if no MathML capability
var alertIfNoMathML = false; // show alert box if no MathML capability
var mathcolor = ""; // change it to "" (to inherit) or any other color
var mathfontfamily="Times,STIXGeneral,serif"; // change to "" to inherit (works in IE)
// or another family (e.g. "arial")
var displaystyle = true; // puts limits above and below large operators
var showasciiformulaonhover = true; // helps students learn ASCIIMath
var decimalsign = "."; // change to "," if you like, beware of `(1,2)`!
var AMdelimiter1 = "`", AMescape1 = "\\\\`"; // can use other characters
var AMusedelimiter2 = false; //whether to use second delimiter below
var AMdelimiter2 = "$", AMescape2 = "\\\\\\$", AMdelimiter2regexp = "\\$";
var doubleblankmathdelimiter = false; // if true, x+1 is equal to `x+1`
// for IE this works only in <!-- -->
//var separatetokens;// has been removed (email me if this is a problem)
var AMisIE = (navigator.appName.slice(0,9)=="Microsoft");//document.createElementNS==null;
if (document.getElementById==null)
alert("This webpage requires a recent browser such as\
\nMozilla/Netscape 7+ or Internet Explorer 6+MathPlayer")
// all further global variables start with "AM"
function AMcreateElementXHTML(t) {
if (AMisIE) return document.createElement(t);
else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
}
function AMnoMathMLNote() {
var nd = AMcreateElementXHTML("h3");
nd.setAttribute("align","center")
nd.appendChild(AMcreateElementXHTML("p"));
nd.appendChild(document.createTextNode("To view the "));
var an = AMcreateElementXHTML("a");
an.appendChild(document.createTextNode("ASCIIMathML"));
an.setAttribute("href","http://www.chapman.edu/~jipsen/asciimath.html");
nd.appendChild(an);
nd.appendChild(document.createTextNode(" notation use Internet Explorer 6+"));
an = AMcreateElementXHTML("a");
an.appendChild(document.createTextNode("MathPlayer"));
an.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");
nd.appendChild(an);
nd.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));
nd.appendChild(AMcreateElementXHTML("p"));
return nd;
}
function AMisMathMLavailable() {
//if (navigator.appName.slice(0,8)=="Netscape")
//if (navigator.appVersion.slice(0,1)>="5") return null;
//else return AMnoMathMLNote();
if (navigator.product && navigator.product=='Gecko') {
var rv = navigator.userAgent.toLowerCase().match(/rv:\s*([\d\.]+)/);
if (rv!=null) {
rv = rv[1].split('.');
if (rv.length<3) { rv[2] = 0;}
if (rv.length<2) { rv[1] = 0;}
}
if (rv!=null && 10000*rv[0]+100*rv[1]+1*rv[2]>=10100) {
AMisGecko = 10000*rv[0]+100*rv[1]+1*rv[2];
return null;
} else {
return AMnoMathMLNote();
}
}
else if (navigator.appName.slice(0,9)=="Microsoft") {
version = parseFloat(navigator.appVersion.split("MSIE")[1]);
if (version >= 10) {
return AMnoMathMLNote(); //IE 10 does not work with MathPlayer yet
}
try {
var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
return null;
} catch (e) {
return AMnoMathMLNote();
}
} else return AMnoMathMLNote();
}
// character lists for Mozilla/Netscape fonts
var AMcal = [0xEF35,0x212C,0xEF36,0xEF37,0x2130,0x2131,0xEF38,0x210B,0x2110,0xEF39,0xEF3A,0x2112,0x2133,0xEF3B,0xEF3C,0xEF3D,0xEF3E,0x211B,0xEF3F,0xEF40,0xEF41,0xEF42,0xEF43,0xEF44,0xEF45,0xEF46];
var AMfrk = [0xEF5D,0xEF5E,0x212D,0xEF5F,0xEF60,0xEF61,0xEF62,0x210C,0x2111,0xEF63,0xEF64,0xEF65,0xEF66,0xEF67,0xEF68,0xEF69,0xEF6A,0x211C,0xEF6B,0xEF6C,0xEF6D,0xEF6E,0xEF6F,0xEF70,0xEF71,0x2128];
var AMbbb = [0xEF8C,0xEF8D,0x2102,0xEF8E,0xEF8F,0xEF90,0xEF91,0x210D,0xEF92,0xEF93,0xEF94,0xEF95,0xEF96,0x2115,0xEF97,0x2119,0x211A,0x211D,0xEF98,0xEF99,0xEF9A,0xEF9B,0xEF9C,0xEF9D,0xEF9E,0x2124];
var CONST = 0, UNARY = 1, BINARY = 2, INFIX = 3, LEFTBRACKET = 4,
RIGHTBRACKET = 5, SPACE = 6, UNDEROVER = 7, DEFINITION = 8,
LEFTRIGHT = 9, TEXT = 10; // token types
var AMsqrt = {input:"sqrt", tag:"msqrt", output:"sqrt", tex:null, ttype:UNARY},
AMroot = {input:"root", tag:"mroot", output:"root", tex:null, ttype:BINARY},
AMfrac = {input:"frac", tag:"mfrac", output:"/", tex:null, ttype:BINARY},
AMdiv = {input:"/", tag:"mfrac", output:"/", tex:null, ttype:INFIX},
AMover = {input:"stackrel", tag:"mover", output:"stackrel", tex:null, ttype:BINARY},
AMsub = {input:"_", tag:"msub", output:"_", tex:null, ttype:INFIX},
AMsup = {input:"^", tag:"msup", output:"^", tex:null, ttype:INFIX},
AMtext = {input:"text", tag:"mtext", output:"text", tex:null, ttype:TEXT},
AMmbox = {input:"mbox", tag:"mtext", output:"mbox", tex:null, ttype:TEXT},
AMquote = {input:"\"", tag:"mtext", output:"mbox", tex:null, ttype:TEXT};
var AMsymbols = [
//some greek symbols
{input:"alpha", tag:"mi", output:"\u03B1", tex:null, ttype:CONST},
{input:"beta", tag:"mi", output:"\u03B2", tex:null, ttype:CONST},
{input:"chi", tag:"mi", output:"\u03C7", tex:null, ttype:CONST},
{input:"delta", tag:"mi", output:"\u03B4", tex:null, ttype:CONST},
{input:"Delta", tag:"mo", output:"\u0394", tex:null, ttype:CONST},
{input:"epsi", tag:"mi", output:"\u03B5", tex:"epsilon", ttype:CONST},
{input:"varepsilon", tag:"mi", output:"\u025B", tex:null, ttype:CONST},
{input:"eta", tag:"mi", output:"\u03B7", tex:null, ttype:CONST},
{input:"gamma", tag:"mi", output:"\u03B3", tex:null, ttype:CONST},
{input:"Gamma", tag:"mo", output:"\u0393", tex:null, ttype:CONST},
{input:"iota", tag:"mi", output:"\u03B9", tex:null, ttype:CONST},
{input:"kappa", tag:"mi", output:"\u03BA", tex:null, ttype:CONST},
{input:"lambda", tag:"mi", output:"\u03BB", tex:null, ttype:CONST},
{input:"Lambda", tag:"mo", output:"\u039B", tex:null, ttype:CONST},
{input:"lamda", tag:"mi", output:"\u03BB", tex:null, ttype:CONST},
{input:"Lamda", tag:"mo", output:"\u039B", tex:null, ttype:CONST},
{input:"mu", tag:"mi", output:"\u03BC", tex:null, ttype:CONST},
{input:"nu", tag:"mi", output:"\u03BD", tex:null, ttype:CONST},
{input:"omega", tag:"mi", output:"\u03C9", tex:null, ttype:CONST},
{input:"Omega", tag:"mo", output:"\u03A9", tex:null, ttype:CONST},
{input:"phi", tag:"mi", output:"\u03C6", tex:null, ttype:CONST},
{input:"varphi", tag:"mi", output:"\u03D5", tex:null, ttype:CONST},
{input:"Phi", tag:"mo", output:"\u03A6", tex:null, ttype:CONST},
{input:"pi", tag:"mi", output:"\u03C0", tex:null, ttype:CONST},
{input:"Pi", tag:"mo", output:"\u03A0", tex:null, ttype:CONST},
{input:"psi", tag:"mi", output:"\u03C8", tex:null, ttype:CONST},
{input:"Psi", tag:"mi", output:"\u03A8", tex:null, ttype:CONST},
{input:"rho", tag:"mi", output:"\u03C1", tex:null, ttype:CONST},
{input:"sigma", tag:"mi", output:"\u03C3", tex:null, ttype:CONST},
{input:"Sigma", tag:"mo", output:"\u03A3", tex:null, ttype:CONST},
{input:"tau", tag:"mi", output:"\u03C4", tex:null, ttype:CONST},
{input:"theta", tag:"mi", output:"\u03B8", tex:null, ttype:CONST},
{input:"vartheta", tag:"mi", output:"\u03D1", tex:null, ttype:CONST},
{input:"Theta", tag:"mo", output:"\u0398", tex:null, ttype:CONST},
{input:"upsilon", tag:"mi", output:"\u03C5", tex:null, ttype:CONST},
{input:"xi", tag:"mi", output:"\u03BE", tex:null, ttype:CONST},
{input:"Xi", tag:"mo", output:"\u039E", tex:null, ttype:CONST},
{input:"zeta", tag:"mi", output:"\u03B6", tex:null, ttype:CONST},
//binary operation symbols
{input:"*", tag:"mo", output:"\u22C5", tex:"cdot", ttype:CONST},
{input:"**", tag:"mo", output:"\u22C6", tex:"star", ttype:CONST},
{input:"//", tag:"mo", output:"/", tex:null, ttype:CONST},
{input:"\\\\", tag:"mo", output:"\\", tex:"backslash", ttype:CONST},
{input:"setminus", tag:"mo", output:"\\", tex:null, ttype:CONST},
{input:"xx", tag:"mo", output:"\u00D7", tex:"times", ttype:CONST},
{input:"-:", tag:"mo", output:"\u00F7", tex:"div", ttype:CONST},
{input:"divide", tag:"mo", output:"-:", tex:null, ttype:DEFINITION},
{input:"@", tag:"mo", output:"\u2218", tex:"circ", ttype:CONST},
{input:"o+", tag:"mo", output:"\u2295", tex:"oplus", ttype:CONST},
{input:"ox", tag:"mo", output:"\u2297", tex:"otimes", ttype:CONST},
{input:"o.", tag:"mo", output:"\u2299", tex:"odot", ttype:CONST},
{input:"sum", tag:"mo", output:"\u2211", tex:null, ttype:UNDEROVER},
{input:"prod", tag:"mo", output:"\u220F", tex:null, ttype:UNDEROVER},
{input:"^^", tag:"mo", output:"\u2227", tex:"wedge", ttype:CONST},
{input:"^^^", tag:"mo", output:"\u22C0", tex:"bigwedge", ttype:UNDEROVER},
{input:"vv", tag:"mo", output:"\u2228", tex:"vee", ttype:CONST},
{input:"vvv", tag:"mo", output:"\u22C1", tex:"bigvee", ttype:UNDEROVER},
{input:"nn", tag:"mo", output:"\u2229", tex:"cap", ttype:CONST},
{input:"nnn", tag:"mo", output:"\u22C2", tex:"bigcap", ttype:UNDEROVER},
{input:"uu", tag:"mo", output:"\u222A", tex:"cup", ttype:CONST},
{input:"uuu", tag:"mo", output:"\u22C3", tex:"bigcup", ttype:UNDEROVER},
//binary relation symbols
{input:"!=", tag:"mo", output:"\u2260", tex:"ne", ttype:CONST},
{input:":=", tag:"mo", output:":=", tex:null, ttype:CONST},
{input:"lt", tag:"mo", output:"<", tex:null, ttype:CONST},
{input:"gt", tag:"mo", output:">", tex:null, ttype:CONST},
{input:"<=", tag:"mo", output:"\u2264", tex:"le", ttype:CONST},
{input:"lt=", tag:"mo", output:"\u2264", tex:"leq", ttype:CONST},
{input:"gt=", tag:"mo", output:"\u2265", tex:"geq", ttype:CONST},
{input:">=", tag:"mo", output:"\u2265", tex:"ge", ttype:CONST},
{input:"geq", tag:"mo", output:"\u2265", tex:null, ttype:CONST},
{input:"-<", tag:"mo", output:"\u227A", tex:"prec", ttype:CONST},
{input:"-lt", tag:"mo", output:"\u227A", tex:null, ttype:CONST},
{input:">-", tag:"mo", output:"\u227B", tex:"succ", ttype:CONST},
{input:"-<=", tag:"mo", output:"\u2AAF", tex:"preceq", ttype:CONST},
{input:">-=", tag:"mo", output:"\u2AB0", tex:"succeq", ttype:CONST},
{input:"in", tag:"mo", output:"\u2208", tex:null, ttype:CONST},
{input:"!in", tag:"mo", output:"\u2209", tex:"notin", ttype:CONST},
{input:"sub", tag:"mo", output:"\u2282", tex:"subset", ttype:CONST},
{input:"sup", tag:"mo", output:"\u2283", tex:"supset", ttype:CONST},
{input:"sube", tag:"mo", output:"\u2286", tex:"subseteq", ttype:CONST},
{input:"supe", tag:"mo", output:"\u2287", tex:"supseteq", ttype:CONST},
{input:"-=", tag:"mo", output:"\u2261", tex:"equiv", ttype:CONST},
{input:"~=", tag:"mo", output:"\u2245", tex:"stackrel{\\sim}{=}", ttype:CONST}, //back hack b/c mimetex doesn't support /cong
{input:"cong", tag:"mo", output:"~=", tex:null, ttype:DEFINITION},
{input:"~~", tag:"mo", output:"\u2248", tex:"approx", ttype:CONST},
{input:"prop", tag:"mo", output:"\u221D", tex:"propto", ttype:CONST},
//logical symbols
{input:"and", tag:"mtext", output:"and", tex:null, ttype:SPACE},
{input:"or", tag:"mtext", output:"or", tex:null, ttype:SPACE},
{input:"not", tag:"mo", output:"\u00AC", tex:"neg", ttype:CONST},
{input:"=>", tag:"mo", output:"\u21D2", tex:"Rightarrow", ttype:CONST},
{input:"implies", tag:"mo", output:"=>", tex:null, ttype:DEFINITION},
{input:"if", tag:"mo", output:"if", tex:null, ttype:SPACE},
{input:"<=>", tag:"mo", output:"\u21D4", tex:"Leftrightarrow", ttype:CONST},
{input:"iff", tag:"mo", output:"<=>", tex:null, ttype:DEFINITION},
{input:"AA", tag:"mo", output:"\u2200", tex:"forall", ttype:CONST},
{input:"EE", tag:"mo", output:"\u2203", tex:"exists", ttype:CONST},
{input:"_|_", tag:"mo", output:"\u22A5", tex:"bot", ttype:CONST},
{input:"TT", tag:"mo", output:"\u22A4", tex:"top", ttype:CONST},
{input:"|--", tag:"mo", output:"\u22A2", tex:"vdash", ttype:CONST},
{input:"|==", tag:"mo", output:"\u22A8", tex:"models", ttype:CONST}, //mimetex doesn't support
//grouping brackets
{input:"(", tag:"mo", output:"(", tex:null, ttype:LEFTBRACKET},
{input:")", tag:"mo", output:")", tex:null, ttype:RIGHTBRACKET},
{input:"[", tag:"mo", output:"[", tex:null, ttype:LEFTBRACKET},
{input:"]", tag:"mo", output:"]", tex:null, ttype:RIGHTBRACKET},
{input:"{", tag:"mo", output:"{", tex:"lbrace", ttype:LEFTBRACKET},
{input:"}", tag:"mo", output:"}", tex:"rbrace", ttype:RIGHTBRACKET},
{input:"|", tag:"mo", output:"|", tex:null, ttype:LEFTRIGHT},
//{input:"||", tag:"mo", output:"||", tex:null, ttype:LEFTRIGHT},
{input:"(:", tag:"mo", output:"\u2329", tex:"langle", ttype:LEFTBRACKET},
{input:":)", tag:"mo", output:"\u232A", tex:"rangle", ttype:RIGHTBRACKET},
{input:"<<", tag:"mo", output:"\u2329", tex:"langle", ttype:LEFTBRACKET},
{input:">>", tag:"mo", output:"\u232A", tex:"rangle", ttype:RIGHTBRACKET},
{input:"{:", tag:"mo", output:"{:", tex:null, ttype:LEFTBRACKET, invisible:true},
{input:":}", tag:"mo", output:":}", tex:null, ttype:RIGHTBRACKET, invisible:true},
//miscellaneous symbols
{input:"int", tag:"mo", output:"\u222B", tex:null, ttype:CONST},
{input:"dx", tag:"mi", output:"{:d x:}", tex:null, ttype:DEFINITION},
{input:"dy", tag:"mi", output:"{:d y:}", tex:null, ttype:DEFINITION},
{input:"dz", tag:"mi", output:"{:d z:}", tex:null, ttype:DEFINITION},
{input:"dt", tag:"mi", output:"{:d t:}", tex:null, ttype:DEFINITION},
{input:"oint", tag:"mo", output:"\u222E", tex:null, ttype:CONST},
{input:"del", tag:"mo", output:"\u2202", tex:"partial", ttype:CONST},
{input:"grad", tag:"mo", output:"\u2207", tex:"nabla", ttype:CONST},
{input:"+-", tag:"mo", output:"\u00B1", tex:"pm", ttype:CONST},
{input:"O/", tag:"mo", output:"\u2205", tex:"emptyset", ttype:CONST},
{input:"oo", tag:"mo", output:"\u221E", tex:"infty", ttype:CONST},
{input:"aleph", tag:"mo", output:"\u2135", tex:null, ttype:CONST},
{input:"...", tag:"mo", output:"...", tex:"ldots", ttype:CONST},
{input:":.", tag:"mo", output:"\u2234", tex:"therefore", ttype:CONST},
{input:"/_", tag:"mo", output:"\u2220", tex:"angle", ttype:CONST},
{input:"\\ ", tag:"mo", output:"\u00A0", tex:null, ttype:CONST, val:true},
{input:"quad", tag:"mo", output:"\u00A0\u00A0", tex:null, ttype:CONST},
{input:"qquad", tag:"mo", output:"\u00A0\u00A0\u00A0\u00A0", tex:null, ttype:CONST},
{input:"cdots", tag:"mo", output:"\u22EF", tex:null, ttype:CONST},
{input:"vdots", tag:"mo", output:"\u22EE", tex:null, ttype:CONST},
{input:"ddots", tag:"mo", output:"\u22F1", tex:null, ttype:CONST},
{input:"diamond", tag:"mo", output:"\u22C4", tex:null, ttype:CONST},
{input:"square", tag:"mo", output:"\u25A1", tex:"boxempty", ttype:CONST},
{input:"|__", tag:"mo", output:"\u230A", tex:"lfloor", ttype:CONST},
{input:"__|", tag:"mo", output:"\u230B", tex:"rfloor", ttype:CONST},
{input:"|~", tag:"mo", output:"\u2308", tex:"lceil", ttype:CONST},
{input:"lceiling", tag:"mo", output:"|~", tex:null, ttype:DEFINITION},
{input:"~|", tag:"mo", output:"\u2309", tex:"rceil", ttype:CONST},
{input:"rceiling", tag:"mo", output:"~|", tex:null, ttype:DEFINITION},
{input:"CC", tag:"mo", output:"\u2102", tex:"mathbb{C}", ttype:CONST, notexcopy:true},
{input:"NN", tag:"mo", output:"\u2115", tex:"mathbb{N}", ttype:CONST, notexcopy:true},
{input:"QQ", tag:"mo", output:"\u211A", tex:"mathbb{Q}", ttype:CONST, notexcopy:true},
{input:"RR", tag:"mo", output:"\u211D", tex:"mathbb{R}", ttype:CONST, notexcopy:true},
{input:"ZZ", tag:"mo", output:"\u2124", tex:"mathbb{Z}", ttype:CONST, notexcopy:true},
{input:"f", tag:"mi", output:"f", tex:null, ttype:UNARY, func:true, val:true},
{input:"g", tag:"mi", output:"g", tex:null, ttype:UNARY, func:true, val:true},
{input:"'", tag:"mo", output:"\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
{input:"''", tag:"mo", output:"\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
{input:"'''", tag:"mo", output:"\u2032\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
{input:"''''", tag:"mo", output:"\u2032\u2032\u2032\u2032", tex:null, ttype:CONST, notexcopy:true, val:true},
//standard functions
{input:"lim", tag:"mo", output:"lim", tex:null, ttype:UNDEROVER},
{input:"Lim", tag:"mo", output:"Lim", tex:null, ttype:UNDEROVER},
{input:"sin", tag:"mo", output:"sin", tex:null, ttype:UNARY, func:true},
{input:"cos", tag:"mo", output:"cos", tex:null, ttype:UNARY, func:true},
{input:"tan", tag:"mo", output:"tan", tex:null, ttype:UNARY, func:true},
{input:"arcsin", tag:"mo", output:"arcsin", tex:null, ttype:UNARY, func:true},
{input:"arccos", tag:"mo", output:"arccos", tex:null, ttype:UNARY, func:true},
{input:"arctan", tag:"mo", output:"arctan", tex:null, ttype:UNARY, func:true},
{input:"sinh", tag:"mo", output:"sinh", tex:null, ttype:UNARY, func:true},
{input:"cosh", tag:"mo", output:"cosh", tex:null, ttype:UNARY, func:true},
{input:"tanh", tag:"mo", output:"tanh", tex:null, ttype:UNARY, func:true},
{input:"cot", tag:"mo", output:"cot", tex:null, ttype:UNARY, func:true},
{input:"coth", tag:"mo", output:"coth", tex:null, ttype:UNARY, func:true},
{input:"sech", tag:"mo", output:"sech", tex:null, ttype:UNARY, func:true},
{input:"csch", tag:"mo", output:"csch", tex:null, ttype:UNARY, func:true},
{input:"sec", tag:"mo", output:"sec", tex:null, ttype:UNARY, func:true},
{input:"csc", tag:"mo", output:"csc", tex:null, ttype:UNARY, func:true},
{input:"log", tag:"mo", output:"log", tex:null, ttype:UNARY, func:true},
{input:"ln", tag:"mo", output:"ln", tex:null, ttype:UNARY, func:true},
{input:"abs", tag:"mo", output:"abs", tex:"text{abs}", ttype:UNARY, notexcopy:true}, //, func:true
{input:"Sin", tag:"mo", output:"sin", tex:null, ttype:UNARY, func:true},
{input:"Cos", tag:"mo", output:"cos", tex:null, ttype:UNARY, func:true},
{input:"Tan", tag:"mo", output:"tan", tex:null, ttype:UNARY, func:true},
{input:"Arcsin", tag:"mo", output:"arcsin", tex:null, ttype:UNARY, func:true},
{input:"Arccos", tag:"mo", output:"arccos", tex:null, ttype:UNARY, func:true},
{input:"Arctan", tag:"mo", output:"arctan", tex:null, ttype:UNARY, func:true},
{input:"Sinh", tag:"mo", output:"sinh", tex:null, ttype:UNARY, func:true},
{input:"Sosh", tag:"mo", output:"cosh", tex:null, ttype:UNARY, func:true},
{input:"Tanh", tag:"mo", output:"tanh", tex:null, ttype:UNARY, func:true},
{input:"Cot", tag:"mo", output:"cot", tex:null, ttype:UNARY, func:true},
{input:"Sec", tag:"mo", output:"sec", tex:null, ttype:UNARY, func:true},
{input:"Csc", tag:"mo", output:"csc", tex:null, ttype:UNARY, func:true},
{input:"Log", tag:"mo", output:"log", tex:null, ttype:UNARY, func:true},
{input:"Ln", tag:"mo", output:"ln", tex:null, ttype:UNARY, func:true},
{input:"Abs", tag:"mo", output:"abs", tex:"text{abs}", ttype:UNARY, func:true, notexcopy:true},
{input:"det", tag:"mo", output:"det", tex:null, ttype:UNARY, func:true},
{input:"exp", tag:"mo", output:"exp", tex:null, ttype:UNARY, func:true},
{input:"dim", tag:"mo", output:"dim", tex:null, ttype:CONST},
{input:"mod", tag:"mo", output:"mod", tex:"text{mod}", ttype:CONST, notexcopy:true},
{input:"gcd", tag:"mo", output:"gcd", tex:null, ttype:UNARY, func:true},
{input:"lcm", tag:"mo", output:"lcm", tex:"text{lcm}", ttype:UNARY, func:true, notexcopy:true},
{input:"lub", tag:"mo", output:"lub", tex:null, ttype:CONST},
{input:"glb", tag:"mo", output:"glb", tex:null, ttype:CONST},
{input:"min", tag:"mo", output:"min", tex:null, ttype:UNDEROVER},
{input:"max", tag:"mo", output:"max", tex:null, ttype:UNDEROVER},
//arrows
{input:"uarr", tag:"mo", output:"\u2191", tex:"uparrow", ttype:CONST},
{input:"darr", tag:"mo", output:"\u2193", tex:"downarrow", ttype:CONST},
{input:"rarr", tag:"mo", output:"\u2192", tex:"rightarrow", ttype:CONST},
{input:"->", tag:"mo", output:"\u2192", tex:"to", ttype:CONST},
{input:"|->", tag:"mo", output:"\u21A6", tex:"mapsto", ttype:CONST},
{input:"larr", tag:"mo", output:"\u2190", tex:"leftarrow", ttype:CONST},
{input:"harr", tag:"mo", output:"\u2194", tex:"leftrightarrow", ttype:CONST},
{input:"rArr", tag:"mo", output:"\u21D2", tex:"Rightarrow", ttype:CONST},
{input:"lArr", tag:"mo", output:"\u21D0", tex:"Leftarrow", ttype:CONST},
{input:"hArr", tag:"mo", output:"\u21D4", tex:"Leftrightarrow", ttype:CONST},
//commands with argument
AMsqrt, AMroot, AMfrac, AMdiv, AMover, AMsub, AMsup,
{input:"cancel", tag:"menclose", output:"cancel", tex:null, ttype:UNARY},
{input:"hat", tag:"mover", output:"\u005E", tex:null, ttype:UNARY, acc:true},
{input:"bar", tag:"mover", output:"\u00AF", tex:"overline", ttype:UNARY, acc:true},
{input:"vec", tag:"mover", output:"\u2192", tex:null, ttype:UNARY, acc:true},
{input:"tilde", tag:"mover", output:"~", tex:null, ttype:UNARY, acc:true},
{input:"dot", tag:"mover", output:".", tex:null, ttype:UNARY, acc:true},
{input:"ddot", tag:"mover", output:"..", tex:null, ttype:UNARY, acc:true},
{input:"ul", tag:"munder", output:"\u0332", tex:"underline", ttype:UNARY, acc:true},
AMtext, AMmbox, AMquote,
{input:"color", tag:"mstyle", ttype:BINARY},
{input:"bb", tag:"mstyle", atname:"fontweight", atval:"bold", output:"bb", tex:"mathbf", ttype:UNARY, notexcopy:true},
{input:"mathbf", tag:"mstyle", atname:"fontweight", atval:"bold", output:"mathbf", tex:null, ttype:UNARY},
{input:"sf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"sf", tex:"mathsf", ttype:UNARY, notexcopy:true},
{input:"mathsf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"mathsf", tex:null, ttype:UNARY},
{input:"bbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"bbb", tex:"mathbb", ttype:UNARY, codes:AMbbb, notexcopy:true},
{input:"mathbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"mathbb", tex:null, ttype:UNARY, codes:AMbbb},
{input:"cc", tag:"mstyle", atname:"mathvariant", atval:"script", output:"cc", tex:"mathcal", ttype:UNARY, codes:AMcal, notexcopy:true},
{input:"mathcal", tag:"mstyle", atname:"mathvariant", atval:"script", output:"mathcal", tex:null, ttype:UNARY, codes:AMcal},
{input:"tt", tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"tt", tex:"mathtt", ttype:UNARY, notexcopy:true},
{input:"mathtt", tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"mathtt", tex:null, ttype:UNARY},
{input:"fr", tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"fr", tex:"mathfrak", ttype:UNARY, codes:AMfrk, notexcopy:true},
{input:"mathfrak", tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"mathfrak", tex:null, ttype:UNARY, codes:AMfrk}
];
function compareNames(s1,s2) {
if (s1.input > s2.input) return 1
else return -1;
}
var AMnames = []; //list of input symbols
function AMinitSymbols() {
var texsymbols = [], i;
for (i=0; i<AMsymbols.length; i++)
if (AMsymbols[i].tex && !(typeof AMsymbols[i].notexcopy == "boolean" && AMsymbols[i].notexcopy))
texsymbols[texsymbols.length] = {input:AMsymbols[i].tex,
tag:AMsymbols[i].tag, output:AMsymbols[i].output, ttype:AMsymbols[i].ttype};
AMsymbols = AMsymbols.concat(texsymbols);
AMsymbols.sort(compareNames);
for (i=0; i<AMsymbols.length; i++) AMnames[i] = AMsymbols[i].input;
}
var AMmathml = "http://www.w3.org/1998/Math/MathML";
function AMcreateElementMathML(t) {
if (AMisIE) return document.createElement("m:"+t);
else return document.createElementNS(AMmathml,t);
}
function AMcreateMmlNode(t,frag) {
// var node = AMcreateElementMathML(name);
if (AMisIE) var node = document.createElement("m:"+t);
else var node = document.createElementNS(AMmathml,t);
node.appendChild(frag);
return node;
}
function newcommand(oldstr,newstr) {
AMsymbols = AMsymbols.concat([{input:oldstr, tag:"mo", output:newstr,
tex:null, ttype:DEFINITION}]);
}
function AMremoveCharsAndBlanks(str,n) {
//remove n characters and any following blanks
var st;
if (str.charAt(n)=="\\" && str.charAt(n+1)!="\\" && str.charAt(n+1)!=" ")
st = str.slice(n+1);
else st = str.slice(n);
for (var i=0; i<st.length && st.charCodeAt(i)<=32; i=i+1);
return st.slice(i);
}
function AMposition(arr, str, n) {
// return position >=n where str appears or would be inserted
// assumes arr is sorted
if (n==0) {
var h,m;
n = -1;
h = arr.length;
while (n+1<h) {
m = (n+h) >> 1;
if (arr[m]<str) n = m; else h = m;
}
return h;
} else
for (var i=n; i<arr.length && arr[i]<str; i++);
return i; // i=arr.length || arr[i]>=str
}
function AMgetSymbol(str) {
//return maximal initial substring of str that appears in names
//return null if there is none
var k = 0; //new pos
var j = 0; //old pos
var mk; //match pos
var st;
var tagst;
var match = "";
var more = true;
for (var i=1; i<=str.length && more; i++) {
st = str.slice(0,i); //initial substring of length i
j = k;
k = AMposition(AMnames, st, j);
if (k<AMnames.length && str.slice(0,AMnames[k].length)==AMnames[k]){
match = AMnames[k];
mk = k;
i = match.length;
}
more = k<AMnames.length && str.slice(0,AMnames[k].length)>=AMnames[k];
}
AMpreviousSymbol=AMcurrentSymbol;
if (match!=""){
AMcurrentSymbol=AMsymbols[mk].ttype;
return AMsymbols[mk];
}
// if str[0] is a digit or - return maxsubstring of digits.digits
AMcurrentSymbol=CONST;
k = 1;
st = str.slice(0,1);
var integ = true;
while ("0"<=st && st<="9" && k<=str.length) {
st = str.slice(k,k+1);
k++;
}
if (st == decimalsign) {
st = str.slice(k,k+1);
if ("0"<=st && st<="9") {
integ = false;
k++;
while ("0"<=st && st<="9" && k<=str.length) {
st = str.slice(k,k+1);
k++;
}
}
}
if ((integ && k>1) || k>2) {
st = str.slice(0,k-1);
tagst = "mn";
} else {
k = 2;
st = str.slice(0,1); //take 1 character
tagst = (("A">st || st>"Z") && ("a">st || st>"z")?"mo":"mi");
}
if (st=="-" && AMpreviousSymbol==INFIX) {
AMcurrentSymbol = INFIX;
return {input:st, tag:tagst, output:st, ttype:UNARY, func:true, val:true};
}
return {input:st, tag:tagst, output:st, ttype:CONST, val:true}; //added val bit
}
//TeX conversion version
function AMTremoveBrackets(node) {
var st;
if (node.charAt(0)=='{' && node.charAt(node.length-1)=='}') {
st = node.charAt(1);
if (st=="(" || st=="[") node = '{'+node.substr(2);
st = node.substr(1,6);
if (st=="\\left(" || st=="\\left[" || st=="\\left{") node = '{'+node.substr(7);
st = node.substr(1,12);
if (st=="\\left\\lbrace" || st=="\\left\\langle") node = '{'+node.substr(13);
st = node.charAt(node.length-2);
if (st==")" || st=="]" || st==".") node = node.substr(0,node.length-8)+'}';
st = node.substr(node.length-8,7)
if (st=="\\rbrace" || st=="\\rangle") node = node.substr(0,node.length-14) + '}';
}
return node;
}
//MathML version
function AMremoveBrackets(node) {
var st;
if (node.nodeName=="mrow" || node.nodeName=="M:MROW") {
st = node.firstChild.firstChild.nodeValue;
if (st=="(" || st=="[" || st=="{") node.removeChild(node.firstChild);
}
if (node.nodeName=="mrow" || node.nodeName=="M:MROW") {
st = node.lastChild.firstChild.nodeValue;
if (st==")" || st=="]" || st=="}") node.removeChild(node.lastChild);
}
}
/*Parsing ASCII math expressions with the following grammar
v ::= [A-Za-z] | greek letters | numbers | other constant symbols
u ::= sqrt | text | bb | other unary symbols for font commands
b ::= frac | root | stackrel binary symbols
l ::= ( | [ | { | (: | {: left brackets
r ::= ) | ] | } | :) | :} right brackets
S ::= v | lEr | uS | bSS Simple expression
I ::= S_S | S^S | S_S^S | S Intermediate expression
E ::= IE | I/I Expression
Each terminal symbol is translated into a corresponding mathml node.*/
var AMnestingDepth,AMpreviousSymbol,AMcurrentSymbol;
function AMTgetTeXsymbol(symb) {
if (typeof symb.val == "boolean" && symb.val) {
pre = '';
} else {
pre = '\\';
}
if (symb.tex==null) {
//can't remember why this was here. Breaks /delta /Delta to removed
//return (pre+(pre==''?symb.input:symb.input.toLowerCase()));
return (pre+symb.input);
} else {
return (pre+symb.tex);
}
}
function AMTgetTeXbracket(symb) {
if (symb.tex==null) {
return (symb.input);
} else {
return ('\\'+symb.tex);
}
}
function AMTparseSexpr(str) { //parses str and returns [node,tailstr]
var symbol, node, result, i, st,// rightvert = false,
newFrag = '';
str = AMremoveCharsAndBlanks(str,0);
symbol = AMgetSymbol(str); //either a token or a bracket or empty
if (symbol == null || symbol.ttype == RIGHTBRACKET && AMnestingDepth > 0) {
return [null,str];
}
if (symbol.ttype == DEFINITION) {
str = symbol.output+AMremoveCharsAndBlanks(str,symbol.input.length);
symbol = AMgetSymbol(str);
}
switch (symbol.ttype) {
case UNDEROVER:
case CONST:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
var texsymbol = AMTgetTeXsymbol(symbol);
if (texsymbol.charAt(0)=="\\" || symbol.tag=="mo") return [texsymbol,str];
else return ['{'+texsymbol+'}',str];
case LEFTBRACKET: //read (expr+)
AMnestingDepth++;
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMTparseExpr(str,true);
AMnestingDepth--;
if (result[0].substr(0,6)=="\\right") {
if (result[0].substr(0,7)=="\\right.") {
result[0] = result[0].substr(7);
} else {
result[0] = result[0].substr(6);
}
if (typeof symbol.invisible == "boolean" && symbol.invisible)
node = '{'+result[0]+'}';
else {
node = '{'+AMTgetTeXbracket(symbol) + result[0]+'}';
}
} else {
if (typeof symbol.invisible == "boolean" && symbol.invisible)
node = '{\\left.'+result[0]+'}';
else {
node = '{\\left'+AMTgetTeXbracket(symbol) + result[0]+'}';
}
}
return [node,result[1]];
case TEXT:
if (symbol!=AMquote) str = AMremoveCharsAndBlanks(str,symbol.input.length);
if (str.charAt(0)=="{") i=str.indexOf("}");
else if (str.charAt(0)=="(") i=str.indexOf(")");
else if (str.charAt(0)=="[") i=str.indexOf("]");
else if (symbol==AMquote) i=str.slice(1).indexOf("\"")+1;
else i = 0;
if (i==-1) i = str.length;
st = str.slice(1,i);
if (st.charAt(0) == " ") {
newFrag = '\\ ';
}
newFrag += '\\text{'+st+'}';
if (st.charAt(st.length-1) == " ") {
newFrag += '\\ ';
}
str = AMremoveCharsAndBlanks(str,i+1);
return [newFrag,str];
case UNARY:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMTparseSexpr(str);
if (result[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
st = str.charAt(0);
if (st=="^" || st=="_" || st=="/" || st=="|" || st=="," || ((symbol.input=="f" || symbol.input=="g") && st!="(")) {
return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
} else {
node = '{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}';
return [node,result[1]];
}
}
result[0] = AMTremoveBrackets(result[0]);
if (symbol.input == "sqrt") { // sqrt
return ['\\sqrt{'+result[0]+'}',result[1]];
} else if (symbol.input == "cancel") { // cancel
return ['\\cancel{'+result[0]+'}',result[1]];
} else if (symbol.input == "abs") { // abs
return ['{\\left|'+result[0]+'\\right|}',result[1]];
} else if (typeof symbol.acc == "boolean" && symbol.acc) { // accent
return ['{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}',result[1]];
} else { // font change command
return ['{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}}',result[1]];
}
case BINARY:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMTparseSexpr(str);
if (result[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
result[0] = AMTremoveBrackets(result[0]);
var result2 = AMTparseSexpr(result[1]);
if (result2[0]==null) return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
result2[0] = AMTremoveBrackets(result2[0]);
if (symbol.input=="color") {
newFrag = '{\\color{'+result[0].replace(/[\{\}]/g,'')+'}'+result2[0]+'}';
}
if (symbol.input=="root" || symbol.input=="stackrel") {
if (symbol.input=="root") {
newFrag = '{\\sqrt['+result[0]+']{'+result2[0]+'}}';
} else {
newFrag = '{'+AMTgetTeXsymbol(symbol)+'{'+result[0]+'}{'+result2[0]+'}}';
}
}
if (symbol.input=="frac") {
newFrag = '{\\frac{'+result[0]+'}{'+result2[0]+'}}';
}
return [newFrag,result2[1]];
case INFIX:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
return [symbol.output,str];
case SPACE:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
return ['{\\quad\\text{'+symbol.input+'}\\quad}',str];
case LEFTRIGHT:
// if (rightvert) return [null,str]; else rightvert = true;
AMnestingDepth++;
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMTparseExpr(str,false);
AMnestingDepth--;
var st = "";
st = result[0].charAt(result[0].length -1);
//alert(result[0].lastChild+"***"+st);
if (st == "|") { // its an absolute value subterm
node = '{\\left|'+result[0]+'}';
return [node,result[1]];
} else { // the "|" is a \mid
node = '{\\mid}';
return [node,str];
}
default:
//alert("default");
str = AMremoveCharsAndBlanks(str,symbol.input.length);
return ['{'+AMTgetTeXsymbol(symbol)+'}',str];
}
}
function AMTparseIexpr(str) {
var symbol, sym1, sym2, node, result, underover;
str = AMremoveCharsAndBlanks(str,0);
sym1 = AMgetSymbol(str);
result = AMTparseSexpr(str);
node = result[0];
str = result[1];
symbol = AMgetSymbol(str);
if (symbol.ttype == INFIX && symbol.input != "/") {
str = AMremoveCharsAndBlanks(str,symbol.input.length);
// if (symbol.input == "/") result = AMTparseIexpr(str); else
result = AMTparseSexpr(str);
if (result[0] == null) // show box in place of missing argument
result[0] = '{}';
else result[0] = AMTremoveBrackets(result[0]);
str = result[1];
// if (symbol.input == "/") AMTremoveBrackets(node);
if (symbol.input == "_") {
sym2 = AMgetSymbol(str);
underover = (sym1.ttype == UNDEROVER);
if (sym2.input == "^") {
str = AMremoveCharsAndBlanks(str,sym2.input.length);
var res2 = AMTparseSexpr(str);
res2[0] = AMTremoveBrackets(res2[0]);
str = res2[1];
node = '{' + node;
node += '_{'+result[0]+'}';
node += '^{'+res2[0]+'}';
node += '}';
} else {
node += '_{'+result[0]+'}';
}
} else { //must be ^
node = '{'+node+'}^{'+result[0]+'}';
}
}
return [node,str];
}
function AMTparseExpr(str,rightbracket) {
var symbol, node, result, i, nodeList = [],
newFrag = '';
var addedright = false;
do {
str = AMremoveCharsAndBlanks(str,0);
result = AMTparseIexpr(str);
node = result[0];
str = result[1];
symbol = AMgetSymbol(str);
if (symbol.ttype == INFIX && symbol.input == "/") {
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMTparseIexpr(str);
if (result[0] == null) // show box in place of missing argument
result[0] = '{}';
else result[0] = AMTremoveBrackets(result[0]);
str = result[1];
node = AMTremoveBrackets(node);
node = '\\frac' + '{'+ node + '}';
node += '{'+result[0]+'}';
newFrag += node;
symbol = AMgetSymbol(str);
} else if (node!=undefined) newFrag += node;
} while ((symbol.ttype != RIGHTBRACKET &&
(symbol.ttype != LEFTRIGHT || rightbracket)
|| AMnestingDepth == 0) && symbol!=null && symbol.output!="");
if (symbol.ttype == RIGHTBRACKET || symbol.ttype == LEFTRIGHT) {
// if (AMnestingDepth > 0) AMnestingDepth--;
var len = newFrag.length;
if (len>2 && newFrag.charAt(0)=='{' && newFrag.indexOf(',')>0) { //could be matrix (total rewrite from .js)
var right = newFrag.charAt(len - 2);
if (right==')' || right==']') {
var left = newFrag.charAt(6);
if ((left=='(' && right==')' && symbol.output != '}') || (left=='[' && right==']')) {
var mxout = '\\matrix{';
var pos = new Array(); //position of commas
pos.push(0);
var matrix = true;
var mxnestingd = 0;
var subpos = [];
subpos[0] = [0];
var lastsubposstart = 0;
var mxanynestingd = 0;
for (i=1; i<len-1; i++) {
if (newFrag.charAt(i)==left) mxnestingd++;
if (newFrag.charAt(i)==right) {
mxnestingd--;
if (mxnestingd==0 && newFrag.charAt(i+2)==',' && newFrag.charAt(i+3)=='{') {
pos.push(i+2);
lastsubposstart = i+2;
subpos[lastsubposstart] = [i+2];
}
}
if (newFrag.charAt(i)=='[' || newFrag.charAt(i)=='(' || newFrag.charAt(i)=='{') { mxanynestingd++;}
if (newFrag.charAt(i)==']' || newFrag.charAt(i)==')' || newFrag.charAt(i)=='}') { mxanynestingd--;}
if (newFrag.charAt(i)==',' && mxanynestingd==1) {
subpos[lastsubposstart].push(i);
}
}
pos.push(len);
var lastmxsubcnt = -1;
if (mxnestingd==0 && pos.length>0) {
for (i=0;i<pos.length-1;i++) {
if (i>0) mxout += '\\\\';
if (i==0) {
//var subarr = newFrag.substr(pos[i]+7,pos[i+1]-pos[i]-15).split(',');
if (subpos[pos[i]].length==1) {
var subarr = [newFrag.substr(pos[i]+7,pos[i+1]-pos[i]-15)];
} else {
var subarr = [newFrag.substring(pos[i]+7,subpos[pos[i]][1])];
for (var j=2;j<subpos[pos[i]].length;j++) {
subarr.push(newFrag.substring(subpos[pos[i]][j-1]+1,subpos[pos[i]][j]));
}
subarr.push(newFrag.substring(subpos[pos[i]][subpos[pos[i]].length-1]+1,pos[i+1]-8));
}
} else {
//var subarr = newFrag.substr(pos[i]+8,pos[i+1]-pos[i]-16).split(',');
if (subpos[pos[i]].length==1) {
var subarr = [newFrag.substr(pos[i]+8,pos[i+1]-pos[i]-16)];
} else {
var subarr = [newFrag.substring(pos[i]+8,subpos[pos[i]][1])];
for (var j=2;j<subpos[pos[i]].length;j++) {
subarr.push(newFrag.substring(subpos[pos[i]][j-1]+1,subpos[pos[i]][j]));
}
subarr.push(newFrag.substring(subpos[pos[i]][subpos[pos[i]].length-1]+1,pos[i+1]-8));
}
}
if (lastmxsubcnt>0 && subarr.length!=lastmxsubcnt) {
matrix = false;
} else if (lastmxsubcnt==-1) {
lastmxsubcnt=subarr.length;
}
mxout += subarr.join('&');
}
}
mxout += '}';
if (matrix) { newFrag = mxout;}
}
}
}
str = AMremoveCharsAndBlanks(str,symbol.input.length);
if (typeof symbol.invisible != "boolean" || !symbol.invisible) {
node = '\\right'+AMTgetTeXbracket(symbol); //AMcreateMmlNode("mo",document.createTextNode(symbol.output));
newFrag += node;
addedright = true;
} else {
newFrag += '\\right.';
addedright = true;
}
}
if(AMnestingDepth>0 && !addedright) {
newFrag += '\\right.'; //adjust for non-matching left brackets
//todo: adjust for non-matching right brackets
}
return [newFrag,str];
}
function AMTparseAMtoTeX(str) {
//DLMOD to remove , which editor adds on multiple spaces
AMnestingDepth = 0;
str = str.replace(/( |\u00a0| )/g,"");
str = str.replace(/>/g,">");
str = str.replace(/</g,"<");
if (str.match(/\S/)==null) {
return "";
}
return AMTparseExpr(str.replace(/^\s+/g,""),false)[0];
}
function AMTparseMath(str) {
str = str.replace(/( |\u00a0| )/g,"");
str = str.replace(/>/g,">");
str = str.replace(/</g,"<");
if (str.match(/\S/)==null) {
return document.createTextNode(" ");
}
var texstring = AMTparseAMtoTeX(str);
if (typeof mathbg != "undefined" && mathbg=='dark') {
texstring = "\\reverse " + texstring;
}
if (mathcolor!="") {
texstring = "\\"+mathcolor + texstring;
}
if (displaystyle) {
texstring = "\\displaystyle" + texstring;
} else {
texstring = "\\textstyle" + texstring;
}
texstring = texstring.replace('$','\\$');
var node = AMcreateElementXHTML("img");
if (typeof encodeURIComponent == "function") {
texstring = encodeURIComponent(texstring);
} else {
texstring = escape(texstring);
}
node.src = AMTcgiloc + '?' + texstring;
node.style.verticalAlign = "middle";
if (showasciiformulaonhover) //fixed by djhsu so newline
node.setAttribute("title",str.replace(/\s+/g," "));//does not show in Gecko
return node;
}
function AMparseSexpr(str) { //parses str and returns [node,tailstr]
var symbol, node, result, i, st,// rightvert = false,
newFrag = document.createDocumentFragment();
str = AMremoveCharsAndBlanks(str,0);
symbol = AMgetSymbol(str); //either a token or a bracket or empty
if (symbol == null || symbol.ttype == RIGHTBRACKET && AMnestingDepth > 0) {
return [null,str];
}
if (symbol.ttype == DEFINITION) {
str = symbol.output+AMremoveCharsAndBlanks(str,symbol.input.length);
symbol = AMgetSymbol(str);
}
switch (symbol.ttype) {
case UNDEROVER:
case CONST:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
return [AMcreateMmlNode(symbol.tag, //its a constant
document.createTextNode(symbol.output)),str];
case LEFTBRACKET: //read (expr+)
AMnestingDepth++;
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMparseExpr(str,true);
AMnestingDepth--;
if (typeof symbol.invisible == "boolean" && symbol.invisible)
node = AMcreateMmlNode("mrow",result[0]);
else {
node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
node = AMcreateMmlNode("mrow",node);
node.appendChild(result[0]);
}
return [node,result[1]];
case TEXT:
if (symbol!=AMquote) str = AMremoveCharsAndBlanks(str,symbol.input.length);
if (str.charAt(0)=="{") i=str.indexOf("}");
else if (str.charAt(0)=="(") i=str.indexOf(")");
else if (str.charAt(0)=="[") i=str.indexOf("]");
else if (symbol==AMquote) i=str.slice(1).indexOf("\"")+1;
else i = 0;
if (i==-1) i = str.length;
st = str.slice(1,i);
if (st.charAt(0) == " ") {
node = AMcreateElementMathML("mspace");
node.setAttribute("width","1ex");
newFrag.appendChild(node);
}
newFrag.appendChild(
AMcreateMmlNode(symbol.tag,document.createTextNode(st)));
if (st.charAt(st.length-1) == " ") {
node = AMcreateElementMathML("mspace");
node.setAttribute("width","1ex");
newFrag.appendChild(node);
}
str = AMremoveCharsAndBlanks(str,i+1);
return [AMcreateMmlNode("mrow",newFrag),str];
case UNARY:
str = AMremoveCharsAndBlanks(str,symbol.input.length);
result = AMparseSexpr(str);
if (result[0]==null) return [AMcreateMmlNode(symbol.tag,
document.createTextNode(symbol.output)),str];
if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
st = str.charAt(0);
if (st=="^" || st=="_" || st=="/" || st=="|" || st=="," || ((symbol.input=="f" || symbol.input=="g") && st!="(")) {
return [AMcreateMmlNode(symbol.tag,
document.createTextNode(symbol.output)),str];
} else {
node = AMcreateMmlNode("mrow",
AMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
node.appendChild(result[0]);
return [node,result[1]];
}
}
AMremoveBrackets(result[0]);