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      1 /* March 19, 2004 MathHTML (c) Peter Jipsen http://www.chapman.edu/~jipsen
      2 This program is free software; you can redistribute it and/or modify
      3 it under the terms of the GNU General Public License as published by
      4 the Free Software Foundation; either version 2 of the License, or (at
      5 your option) any later version.
      6 This program is distributed in the hope that it will be useful, but
      7 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      8 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      9 (at http://www.gnu.org/copyleft/gpl.html) for more details.*/
     10 
     11 function convertMath(node) {// for Gecko
     12   if (node.nodeType==1) {
     13     var newnode =
     14       document.createElementNS("http://www.w3.org/1998/Math/MathML",
     15         node.nodeName.toLowerCase());
     16     for(var i=0; i < node.attributes.length; i++) {
     17 	    if (node.attributes[i].nodeName == 'displaystyle') {
     18 	      newnode.setAttribute(node.attributes[i].nodeName,node.attributes[i].nodeValue);
     19 	    }
     20     }
     21     for (var i=0; i<node.childNodes.length; i++) {
     22       var st = node.childNodes[i].nodeValue;
     23       if (st==null || st.slice(0,1)!=" " && st.slice(0,1)!="\n")
     24         newnode.appendChild(convertMath(node.childNodes[i]));
     25     }
     26     return newnode;
     27   }
     28   else return node;
     29 }
     30 function convert() {
     31 
     32 	if (document.createElementNS) {
     33 		var mmlnode = document.getElementsByTagName("span");
     34 
     35 		for (var i=0; i<mmlnode.length; i++) {
     36 			var tmp_node = mmlnode[i];
     37 			if (tmp_node.className == 'asciimath') {
     38 				tmp_node.replaceChild(convertMath(tmp_node.firstChild),tmp_node.firstChild);
     39 				/*
     40 				for (var j=0;j<tmp_node.childNodes.length;j++) {
     41 					if (tmp_node.childNodes[j].nodeType != 3) {
     42 
     43 					}
     44 				}
     45 				*/
     46 			}
     47 		}
     48 	} else {
     49 		var st,node,newnode;
     50 		var mmlnode = document.getElementsByTagName("math");
     51 
     52 	  	for (var i=0; i<mmlnode.length; i++) {
     53 			var str = "";
     54 			node = mmlnode[i];
     55 			while (node.nodeName!="/MATH" && node.nextSibling) {
     56 				st = node.nodeName.toLowerCase();
     57 				if (st=="#text") {
     58 					str += node.nodeValue;
     59 				} else {
     60 					str += (st.slice(0,1)=="/" ? "</m:"+st.slice(1) : "<m:"+st);
     61 					if (st.slice(0,1)!="/") {
     62 						for(var j=0; j < node.attributes.length; j++) {
     63 							if (node.attributes[j].nodeValue!="italic" &&
     64 							 node.attributes[j].nodeValue!="" &&
     65 							 node.attributes[j].nodeValue!="inherit" &&
     66 							 node.attributes[j].nodeValue!=undefined) {
     67 							 str += " "+node.attributes[j].nodeName+"="+
     68 							     "\""+node.attributes[j].nodeValue+"\"";
     69 							}
     70 						}
     71 					}
     72 					str += ">";
     73 				}
     74 				node = node.nextSibling;
     75 				node.parentNode.removeChild(node.previousSibling);
     76 			}
     77 
     78 			if (str != '') {
     79 				str += "</m:math>";
     80 				newnode = document.createElement("span");
     81 				node.parentNode.replaceChild(newnode,node);
     82 				newnode.innerHTML = str;
     83 			}
     84 		}
     85 	}
     86 }