1 files changed, 167 insertions, 0 deletions

diff --git a/js/codemirror/mode/stex/stex.js b/js/codemirror/mode/stex/stex.js
new file mode 100644
index 00000000..bb47fb45
--- /dev/null
+++ b/js/codemirror/mode/stex/stex.js
@@ -0,0 +1,167 @@
+/*
+ * Author: Constantin Jucovschi (c.jucovschi@jacobs-university.de)
+ * Licence: MIT
+ */
+
+CodeMirror.defineMode("stex", function(cmCfg, modeCfg) 
+{    
+    function pushCommand(state, command) {
+        state.cmdState.push(command);
+    }
+
+    function peekCommand(state) { 
+        if (state.cmdState.length>0)
+            return state.cmdState[state.cmdState.length-1];
+        else
+            return null;
+    }
+
+    function popCommand(state) {
+        if (state.cmdState.length>0) {
+            var plug = state.cmdState.pop();
+            plug.closeBracket();
+        }           
+    }
+
+    function applyMostPowerful(state) {
+      var context = state.cmdState;
+      for (var i = context.length - 1; i >= 0; i--) {
+          var plug = context[i];
+          if (plug.name=="DEFAULT")
+              continue;
+          return plug.styleIdentifier();
+      }
+      return null;
+    }
+
+    function addPluginPattern(pluginName, cmdStyle, brackets, styles) {
+        return function () {
+            this.name=pluginName;
+            this.bracketNo = 0;
+            this.style=cmdStyle;
+            this.styles = styles;
+            this.brackets = brackets;
+
+            this.styleIdentifier = function(content) {
+                if (this.bracketNo<=this.styles.length)
+                    return this.styles[this.bracketNo-1];
+                else
+                    return null;
+            };
+            this.openBracket = function(content) {
+                this.bracketNo++;
+                return "bracket";
+            };
+            this.closeBracket = function(content) {
+            };
+        }
+    }
+
+    var plugins = new Array();
+   
+    plugins["importmodule"] = addPluginPattern("importmodule", "tag", "{[", ["string", "builtin"]);
+    plugins["documentclass"] = addPluginPattern("documentclass", "tag", "{[", ["", "atom"]);
+    plugins["usepackage"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
+    plugins["begin"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
+    plugins["end"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
+
+    plugins["DEFAULT"] = function () {
+        this.name="DEFAULT";
+        this.style="tag";
+
+        this.styleIdentifier = function(content) {
+        };
+        this.openBracket = function(content) {
+        };
+        this.closeBracket = function(content) {
+        };
+    };
+
+    function setState(state, f) {
+        state.f = f;
+    }
+
+    function normal(source, state) {
+        if (source.match(/^\\[a-z]+/)) {
+            var cmdName = source.current();
+            cmdName = cmdName.substr(1, cmdName.length-1);
+            var plug = plugins[cmdName];
+            if (typeof(plug) == 'undefined') {
+                plug = plugins["DEFAULT"];
+            }
+            plug = new plug();
+            pushCommand(state, plug);
+            setState(state, beginParams);
+            return plug.style;
+        }
+
+        var ch = source.next();
+        if (ch == "%") {
+            setState(state, inCComment);
+            return "comment";
+        } 
+        else if (ch=='}' || ch==']') {
+            plug = peekCommand(state);
+            if (plug) {
+                plug.closeBracket(ch);
+                setState(state, beginParams);
+            } else
+                return "error";
+            return "bracket";
+        } else if (ch=='{' || ch=='[') {
+            plug = plugins["DEFAULT"];      
+            plug = new plug();
+            pushCommand(state, plug);
+            return "bracket";       
+        }
+        else if (/\d/.test(ch)) {
+            source.eatWhile(/[\w.%]/);
+            return "atom";
+        }
+        else {
+            source.eatWhile(/[\w-_]/);
+            return applyMostPowerful(state);
+        }
+    }
+
+    function inCComment(source, state) {
+        source.skipToEnd();
+        setState(state, normal);
+        return "comment";
+    }
+
+    function beginParams(source, state) {
+        var ch = source.peek();
+        if (ch == '{' || ch == '[') {
+           var lastPlug = peekCommand(state);
+           var style = lastPlug.openBracket(ch);
+           source.eat(ch);
+           setState(state, normal);
+           return "bracket";
+        }
+        if (/[ \t\r]/.test(ch)) {
+            source.eat(ch);
+            return null;
+        }
+        setState(state, normal);
+        lastPlug = peekCommand(state);
+        if (lastPlug) {
+            popCommand(state);
+        }
+        return normal(source, state);
+    }
+
+    return {
+     startState: function() { return { f:normal, cmdState:[] }; },
+         copyState: function(s) { return { f: s.f, cmdState: s.cmdState.slice(0, s.cmdState.length) }; },
+         
+         token: function(stream, state) {
+         var t = state.f(stream, state);
+         var w = stream.current();
+         return t;
+     }
+ };
+});
+
+
+CodeMirror.defineMIME("text/x-stex", "stex");