Refactor code that builds outerHTML string by hand, since it needs to be used by Opera as well in order to fix unquoted special characters in attributes. This also fixes the self-closing tag problems for IE and Opera. (Resolves issue #106 and issue #99)

extensions/mml2jax.js

@@ -12,5 +12,5 @@
  *      http://www.apache.org/licenses/LICENSE-2.0
  */
 
-MathJax.Extension.mml2jax={version:"1.1.1",config:{preview:"alttext"},MMLnamespace:"http://www.w3.org/1998/Math/MathML",PreProcess:function(e){if(!this.configured){this.config=MathJax.Hub.CombineConfig("mml2jax",this.config);if(this.config.Augment){MathJax.Hub.Insert(this,this.config.Augment)}this.InitBrowser();this.configured=true}if(typeof(e)==="string"){e=document.getElementById(e)}if(!e){e=document.body}this.ProcessMathArray(e.getElementsByTagName("math"));if(e.getElementsByTagNameNS){this.ProcessMathArray(e.getElementsByTagNameNS(this.MMLnamespace,"math"))}var d=document.getElementsByTagName("html")[0];if(d){for(var c=0,b=d.attributes.length;c<b;c++){var a=d.attributes[c];if(a.nodeName.substr(0,6)==="xmlns:"&&a.nodeValue===this.MMLnamespace){this.ProcessMathArray(e.getElementsByTagName(a.nodeName.substr(6)+":math"))}}}},ProcessMathArray:function(b){var a;if(b.length){if(this.msieMathTagBug){for(a=b.length-1;a>=0;a--){if(b[a].nodeName==="MATH"){this.msieProcessMath(b[a])}else{this.ProcessMath(b[a])}}}else{for(a=b.length-1;a>=0;a--){this.ProcessMath(b[a])}}}},ProcessMath:function(e){var d=e.parentNode;var a=document.createElement("script");a.type="math/mml";d.insertBefore(a,e);if(this.msieScriptBug){var b=this.msieOuterHTML(e);b=b.replace(/<\?import .*?>/i,"").replace(/<\?xml:namespace .*?\/>/i,"");MathJax.HTML.setScript(a,b.replace(/&nbsp;/g,"&#xA0;"));d.removeChild(e)}else{var c=MathJax.HTML.Element("span");c.appendChild(e);MathJax.HTML.setScript(a,c.innerHTML)}if(this.config.preview!=="none"){this.createPreview(e,a)}},msieProcessMath:function(e){var c=e.parentNode;var a=document.createElement("script");a.type="math/mml";c.insertBefore(a,e);var b="",d;while(e&&e.nodeName!=="/MATH"){d=e;e=e.nextSibling;b+=this.msieNodeHTML(d);d.parentNode.removeChild(d)}if(e&&e.nodeName==="/MATH"){e.parentNode.removeChild(e)}a.text=b+"</math>";if(this.config.preview!=="none"){this.createPreview(e,a)}},msieNodeHTML:function(d){var c,b,a;if(d.nodeName==="#text"){c=d.nodeValue.replace(/&/g,"&#x26;").replace(/</g,"&lt;").replace(/>/g,"&gt;")}else{if(d.nodeName==="#comment"){c="<!--"+d.nodeValue+"-->"}else{if(this.msieAttributeBug){c="<"+d.nodeName.toLowerCase();for(b=0,a=d.attributes.length;b<a;b++){if(d.attributes[b].specified){c+=" "+d.attributes[b].nodeName.toLowerCase()+"=";c+='"'+d.attributes[b].nodeValue.replace(/\"/g,'\\"')+'"'}}c+=">"}else{c=this.toLowerCase(d.outerHTML);var e=c.split(/\"/);for(b=0,a=e.length;b<a;b+=2){e[b]=e[b].toLowerCase()}c=e.join('"')}}}return c},msieOuterHTML:function(d){if(d.nodeName.charAt(0)==="#"){return this.msieNodeHTML(d)}if(!this.msieAttributeBug){return d.outerHTML}var c=this.msieNodeHTML(d);for(var b=0,a=d.childNodes.length;b<a;b++){c+=this.msieOuterHTML(d.childNodes[b])}c+="</"+d.nodeName.toLowerCase()+">";return c},createPreview:function(b,a){var c;if(this.config.preview==="alttext"){var d=b.getAttribute("alttext");if(d!=null){c=[this.filterText(d)]}}else{if(this.config.preview instanceof Array){c=this.config.preview}}if(c){c=MathJax.HTML.Element("span",{className:MathJax.Hub.config.preRemoveClass},c);a.parentNode.insertBefore(c,a)}},filterText:function(a){return a},InitBrowser:function(){MathJax.Hub.Browser.Select({MSIE:function(a){var b=MathJax.HTML.Element("span",{className:"mathjax"});MathJax.Hub.Insert(MathJax.Extension.mml2jax,{msieScriptBug:true,msieMathTagBug:(MathJax.HTML.Element("span",{innerHTML:"<math><mi>x</mi></math>"}).childNodes.length!==1),msieAttributeBug:(b.outerHTML.substr(12)!=='"')})}})}};MathJax.Hub.Register.PreProcessor(["PreProcess",MathJax.Extension.mml2jax]);MathJax.Ajax.loadComplete("[MathJax]/extensions/mml2jax.js");
+MathJax.Extension.mml2jax={version:"1.1.2",config:{preview:"alttext"},MMLnamespace:"http://www.w3.org/1998/Math/MathML",PreProcess:function(e){if(!this.configured){this.config=MathJax.Hub.CombineConfig("mml2jax",this.config);if(this.config.Augment){MathJax.Hub.Insert(this,this.config.Augment)}this.InitBrowser();this.configured=true}if(typeof(e)==="string"){e=document.getElementById(e)}if(!e){e=document.body}this.ProcessMathArray(e.getElementsByTagName("math"));if(e.getElementsByTagNameNS){this.ProcessMathArray(e.getElementsByTagNameNS(this.MMLnamespace,"math"))}var d=document.getElementsByTagName("html")[0];if(d){for(var c=0,b=d.attributes.length;c<b;c++){var a=d.attributes[c];if(a.nodeName.substr(0,6)==="xmlns:"&&a.nodeValue===this.MMLnamespace){this.ProcessMathArray(e.getElementsByTagName(a.nodeName.substr(6)+":math"))}}}},ProcessMathArray:function(b){var a;if(b.length){if(this.MathTagBug){for(a=b.length-1;a>=0;a--){if(b[a].nodeName==="MATH"){this.ProcessMathFlattened(b[a])}else{this.ProcessMath(b[a])}}}else{for(a=b.length-1;a>=0;a--){this.ProcessMath(b[a])}}}},ProcessMath:function(e){var d=e.parentNode;var a=document.createElement("script");a.type="math/mml";d.insertBefore(a,e);if(this.AttributeBug){var b=this.OuterHTML(e);if(this.CleanupHTML){b=b.replace(/<\?import .*?>/i,"").replace(/<\?xml:namespace .*?\/>/i,"");b=b.replace(/&nbsp;/g,"&#xA0;")}MathJax.HTML.setScript(a,b);d.removeChild(e)}else{var c=MathJax.HTML.Element("span");c.appendChild(e);MathJax.HTML.setScript(a,c.innerHTML)}if(this.config.preview!=="none"){this.createPreview(e,a)}},ProcessMathFlattened:function(e){var c=e.parentNode;var a=document.createElement("script");a.type="math/mml";c.insertBefore(a,e);var b="",d;while(e&&e.nodeName!=="/MATH"){d=e;e=e.nextSibling;b+=this.NodeHTML(d);d.parentNode.removeChild(d)}if(e&&e.nodeName==="/MATH"){e.parentNode.removeChild(e)}a.text=b+"</math>";if(this.config.preview!=="none"){this.createPreview(e,a)}},NodeHTML:function(e){var d,c,a;if(e.nodeName==="#text"){d=this.quoteHTML(e.nodeValue)}else{if(e.nodeName==="#comment"){d="<!--"+e.nodeValue+"-->"}else{d="<"+e.nodeName.toLowerCase();var b=e.attributes;for(c=0,a=b.length;c<a;c++){if(b[c].specified){d+=" "+b[c].nodeName.toLowerCase().replace(/xmlns:xmlns/,"xmlns")+"=";d+='"'+this.quoteHTML(b[c].nodeValue)+'"'}}d+=">"}}return d},OuterHTML:function(d){if(d.nodeName.charAt(0)==="#"){return this.NodeHTML(d)}if(!this.AttributeBug){return d.outerHTML}var c=this.NodeHTML(d);for(var b=0,a=d.childNodes.length;b<a;b++){c+=this.OuterHTML(d.childNodes[b])}c+="</"+d.nodeName.toLowerCase()+">";return c},quoteHTML:function(a){return a.replace(/&/g,"&#x26;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;")},createPreview:function(b,a){var c;if(this.config.preview==="alttext"){var d=b.getAttribute("alttext");if(d!=null){c=[this.filterText(d)]}}else{if(this.config.preview instanceof Array){c=this.config.preview}}if(c){c=MathJax.HTML.Element("span",{className:MathJax.Hub.config.preRemoveClass},c);a.parentNode.insertBefore(c,a)}},filterText:function(a){return a},InitBrowser:function(){var b=MathJax.HTML.Element("span",{id:"<",className:"mathjax",innerHTML:"<math><mi>x</mi><mspace /></math>"});var a=b.outerHTML||"";this.AttributeBug=a!==""&&!(a.match(/id="&lt;"/)&&a.match(/class="mathjax"/)&&a.match(/<\/math>/));this.MathTagBug=b.childNodes.length>1;this.CleanupHTML=MathJax.Hub.Browser.isMSIE}};MathJax.Hub.Register.PreProcessor(["PreProcess",MathJax.Extension.mml2jax]);MathJax.Ajax.loadComplete("[MathJax]/extensions/mml2jax.js");
 

unpacked/extensions/mml2jax.js

@@ -24,7 +24,7 @@
  */
 
 MathJax.Extension.mml2jax = {
-  version: "1.1.1",
+  version: "1.1.2",
   config: {
     preview: "alttext"      // Use the <math> element's alttext as the 
                             //   preview.  Set to "none" for no preview,
@@ -68,9 +68,9 @@ MathJax.Extension.mml2jax = {
   ProcessMathArray: function (math) {
     var i;
     if (math.length) {
-      if (this.msieMathTagBug) {
+      if (this.MathTagBug) {
         for (i = math.length-1; i >= 0; i--) {
-          if (math[i].nodeName === "MATH") {this.msieProcessMath(math[i])}
+          if (math[i].nodeName === "MATH") {this.ProcessMathFlattened(math[i])}
                                       else {this.ProcessMath(math[i])}
         }
       } else {
@@ -84,11 +84,13 @@ MathJax.Extension.mml2jax = {
     var script = document.createElement("script");
     script.type = "math/mml";
     parent.insertBefore(script,math);
-    if (this.msieScriptBug) {
+    if (this.AttributeBug) {
-      var html = this.msieOuterHTML(math);
+      var html = this.OuterHTML(math);
+      if (this.CleanupHTML) {
         html = html.replace(/<\?import .*?>/i,"").replace(/<\?xml:namespace .*?\/>/i,"");
-      MathJax.HTML.setScript(script,html.replace(/&nbsp;/g,"&#xA0;"));
+        html = html.replace(/&nbsp;/g,"&#xA0;");
-      parent.removeChild(math);
+      }
+      MathJax.HTML.setScript(script,html); parent.removeChild(math);
     } else {
       var span = MathJax.HTML.Element("span"); span.appendChild(math);
       MathJax.HTML.setScript(script,span.innerHTML);
@@ -96,7 +98,7 @@ MathJax.Extension.mml2jax = {
     if (this.config.preview !== "none") {this.createPreview(math,script)}
   },
   
-  msieProcessMath: function (math) {
+  ProcessMathFlattened: function (math) {
     var parent = math.parentNode;
     var script = document.createElement("script");
     script.type = "math/mml";
@@ -104,48 +106,49 @@ MathJax.Extension.mml2jax = {
     var mml = "", node;
     while (math && math.nodeName !== "/MATH") {
       node = math; math = math.nextSibling;
-      mml += this.msieNodeHTML(node);
+      mml += this.NodeHTML(node);
       node.parentNode.removeChild(node);
     }
     if (math && math.nodeName === "/MATH") {math.parentNode.removeChild(math)}
     script.text = mml + "</math>";
     if (this.config.preview !== "none") {this.createPreview(math,script)}
   },
-  msieNodeHTML: function (node) {
+  
+  NodeHTML: function (node) {
     var html, i, m;
     if (node.nodeName === "#text") {
-      html = node.nodeValue.replace(/&/g,"&#x26;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
+      html = this.quoteHTML(node.nodeValue);
     } else if (node.nodeName === "#comment") {
       html = "<!--" + node.nodeValue + "-->"
-    }
+    } else {
-    else if (this.msieAttributeBug) {
       // In IE, outerHTML doesn't properly quote attributes, so quote them by hand
+      // In Opera, HTML special characters aren't quoted in attributes, so quote them
       html = "<"+node.nodeName.toLowerCase();
-      for (i = 0, m = node.attributes.length; i < m; i++) {
+      var attributes = node.attributes;
-        if (node.attributes[i].specified) {
+      for (i = 0, m = attributes.length; i < m; i++) {
-          html += " "+node.attributes[i].nodeName.toLowerCase()+"=";
+        if (attributes[i].specified) {
-          html += '"'+node.attributes[i].nodeValue.replace(/\"/g,'\\"')+'"';
+          // Opera 11.5 beta turns xmlns into xmlns:xmlns, so put it back
+          // *** FIXME:  Similar problems may occur for other attributes?
+          html += " "+attributes[i].nodeName.toLowerCase().replace(/xmlns:xmlns/,"xmlns")+"=";
+          html += '"'+this.quoteHTML(attributes[i].nodeValue)+'"';
         }
       }
       html += ">";
-    } else {
-      html = this.toLowerCase(node.outerHTML)
-      var parts = html.split(/\"/);
-      for (i = 0, m = parts.length; i < m; i += 2) {parts[i] = parts[i].toLowerCase()}
-      html = parts.join('"');
     }
     return html;
   },
-  msieOuterHTML: function (node) {
+  OuterHTML: function (node) {
-    // IE's outerHTML doesn't properly quote 
+    if (node.nodeName.charAt(0) === "#") {return this.NodeHTML(node)}
-    if (node.nodeName.charAt(0) === "#") {return this.msieNodeHTML(node)}
+    if (!this.AttributeBug) {return node.outerHTML}
-    if (!this.msieAttributeBug) {return node.outerHTML}
+    var html = this.NodeHTML(node);
-    var html = this.msieNodeHTML(node);
     for (var i = 0, m = node.childNodes.length; i < m; i++)
-      {html += this.msieOuterHTML(node.childNodes[i])}
+      {html += this.OuterHTML(node.childNodes[i]);}
-    html += "</"+node.nodeName.toLowerCase()+">"
+    html += "</"+node.nodeName.toLowerCase()+">";
     return html;
   },
+  quoteHTML: function (string) {
+    return string.replace(/&/g,"&#x26;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
+  },
   
   createPreview: function (math,script) {
     var preview;
@@ -162,16 +165,15 @@ MathJax.Extension.mml2jax = {
   filterText: function (text) {return text},
   
   InitBrowser: function () {
-    MathJax.Hub.Browser.Select({
+    var test = MathJax.HTML.Element("span",{id:"<", className: "mathjax", innerHTML: "<math><mi>x</mi><mspace /></math>"});
-      MSIE: function (browser) {
+    var html = test.outerHTML || "";
-        var test = MathJax.HTML.Element("span",{className:"mathjax"});
+    this.AttributeBug = html !== "" && !(
-        MathJax.Hub.Insert(MathJax.Extension.mml2jax,{
+      html.match(/id="&lt;"/) &&           // "<" should convert to "&lt;"
-          msieScriptBug: true,
+      html.match(/class="mathjax"/) &&     // IE leaves out quotes
-	  msieMathTagBug: (MathJax.HTML.Element("span", {innerHTML:"<math><mi>x</mi></math>"}).childNodes.length !== 1), // IE < 9 corrupts MathML
+      html.match(/<\/math>/)               // Opera 9 drops tags after self-closing tags
-          msieAttributeBug: (test.outerHTML.substr(12) !== '"') // attributes aren't quoted?
+    );
-	})
+    this.MathTagBug = test.childNodes.length > 1;    // IE < 9 flattens unknown tags
-      }
+    this.CleanupHTML = MathJax.Hub.Browser.isMSIE;   // remove namespace and other added tags
-    });
   }
 
 };