showdown, markdown meta data

realms/static/js/dillinger.js

@@ -301,18 +301,6 @@ $(function(){
 
       initUi();
 
-      marked.setOptions({
-        gfm: true,
-        tables: true,
-        pedantic: false,
-        sanitize: false,
-        smartLists: true,
-        smartypants: false,
-        langPrefix: 'lang-'
-      });
-
-      converter = marked;
-
       bindPreview();
 
       bindNav();
@@ -498,19 +486,18 @@ $(function(){
    * @return {Void}
    */
   function fetchTheme(th, cb){
-    var name = th.split('/').pop()
+    var name = th.split('/').pop();
 
     asyncLoad("/static/js/ace/theme-"+ name +".js", function(){
+      editor.setTheme(th);
 
-      editor.setTheme(th)
+      cb && cb();
 
-      cb && cb()
+      updateBg(name);
 
-      updateBg(name)
+      updateUserProfile({theme: th});
 
-      updateUserProfile({theme: th})
-
-    }) // end asyncLoad
+    }); // end asyncLoad
 
   } // end fetchTheme(t)
 
@@ -532,11 +519,11 @@ $(function(){
   function previewMd(){
 
     var unmd = editor.getSession().getValue()
-      , md = converter(unmd);
+      , md = MDR.convert(unmd, true);
 
     $preview
       .html('') // unnecessary?
-      .html(html_sanitize(md));
+      .html(md);
 
     refreshWordCount();
   }

realms/static/js/showdown/extensions/github.js

@@ -0,0 +1,5 @@
+//
+//  Github Extension (WIP)
+//  ~~strike-through~~   ->  <del>strike-through</del>
+//
+(function(){var a=function(a){return[{type:"lang",regex:"(~T){2}([^~]+)(~T){2}",replace:function(a,b,c,d){return"<del>"+c+"</del>"}}]};typeof window!="undefined"&&window.Showdown&&window.Showdown.extensions&&(window.Showdown.extensions.github=a),typeof module!="undefined"&&(module.exports=a)})();

realms/static/js/showdown/extensions/google-prettify.js

@@ -0,0 +1,6 @@
+//
+//  Google Prettify
+//  A showdown extension to add Google Prettify (http://code.google.com/p/google-code-prettify/)
+//  hints to showdown's HTML output.
+//
+(function(){var a=function(a){return[{type:"output",filter:function(a){return a.replace(/(<pre>)?<code>/gi,function(a,b){return b?'<pre class="prettyprint linenums" tabIndex="0"><code data-inner="1">':'<code class="prettyprint">'})}}]};typeof window!="undefined"&&window.Showdown&&window.Showdown.extensions&&(window.Showdown.extensions.googlePrettify=a),typeof module!="undefined"&&(module.exports=a)})();

realms/static/js/showdown/extensions/twitter.js

@@ -0,0 +1,6 @@
+//
+//  Twitter Extension
+//  @username   ->  <a href="http://twitter.com/username">@username</a>
+//  #hashtag    ->  <a href="http://twitter.com/search/%23hashtag">#hashtag</a>
+//
+(function(){var a=function(a){return[{type:"lang",regex:"\\B(\\\\)?@([\\S]+)\\b",replace:function(a,b,c){return b==="\\"?a:'<a href="http://twitter.com/'+c+'">@'+c+"</a>"}},{type:"lang",regex:"\\B(\\\\)?#([\\S]+)\\b",replace:function(a,b,c){return b==="\\"?a:'<a href="http://twitter.com/search/%23'+c+'">#'+c+"</a>"}},{type:"lang",regex:"\\\\@",replace:"@"}]};typeof window!="undefined"&&window.Showdown&&window.Showdown.extensions&&(window.Showdown.extensions.twitter=a),typeof module!="undefined"&&(module.exports=a)})();

realms/static/js/showdown/wmd.js

@@ -0,0 +1,149 @@
+/*!
+ * WMD - Wanton Markdown
+ * Copyright (c) 2010 Caolan McMahon
+ */
+
+
+
+/**
+ * Main function for converting markdown to HTML.
+ *
+ * @param {String} content
+ * @param {Object} options
+ * @return {String}
+ * @api public
+ */
+
+var WMD = function (content, options) {
+    var doc = {raw: content, markdown: content};
+    var opt = WMD.readOptions(options);
+    WMD.preprocess(doc, opt);
+    doc.html = WMD.processor(doc.markdown);
+    WMD.postprocess(doc, opt);
+    doc.toString = function () {
+        return doc.html;
+    };
+    return doc;
+};
+
+
+function gsub(str, re, fn, /*optional*/newstr) {
+    newstr = newstr || '';
+    var match = re.exec(str);
+    if (match) {
+        newstr += str.slice(0, match.index);
+        newstr += fn.apply(null, match);
+        remaining = str.slice(match.index + match[0].length);
+        return gsub(remaining, re, fn, newstr);
+    }
+    return newstr + str;
+}
+
+WMD.processor = new Showdown.converter().makeHtml;
+
+WMD.preprocessors = {
+
+    underscores: function (doc) {
+        // prevent foo_bar_baz from ending up with an italic word in the middle
+        doc.markdown = gsub(doc.markdown,
+            /(^(?! {4}|\t)\w+_\w+_\w[\w_]*)/, function (match) {
+                var count = 0;
+                for (var i = 0; i < match.length; i++) {
+                    if (match[i] == '_') count++;
+                }
+                if (count === 2) {
+                    return match.replace(/_/g, '\\_');
+                }
+                return match;
+            }
+        );
+        return doc;
+    },
+
+    metadata: function (doc) {
+        var key;
+        var lines = doc.markdown.split('\n');
+        doc.metadata = {};
+
+        while (lines.length) {
+            var match = /^(\S+):\s+(.*)$/.exec(lines[0]);
+            if (match) {
+                var key = match[1];
+                doc.metadata[key] = match[2];
+                lines.shift();
+            }
+            else {
+                var continued_value = /^\s+(.+)$/.exec(lines[0]);
+                // strip empty lines
+                if (/^\s*$/.exec(lines[0])) {
+                    lines.shift();
+                }
+                else if (continued_value && key) {
+                    doc.metadata[key] += '\n' + continued_value[1];
+                    lines.shift();
+                }
+                else break;
+            }
+        }
+        doc.markdown = lines.join('\n');
+        return doc;
+    }
+};
+
+WMD.postprocessors = {};
+
+/**
+ * Extends a default set of options with those passed to it.
+ *
+ * @param {Object} options
+ * @return {Object}
+ * @api public
+ */
+
+WMD.readOptions = function (options) {
+    var obj = {
+        preprocessors: [
+            WMD.preprocessors.metadata,
+            WMD.preprocessors.underscores
+        ],
+        postprocessors: []
+    };
+    for (var k in options) {
+        obj[k] = options[k];
+    }
+    return obj;
+};
+
+/**
+ * Runs all the preprocessors defined in options on the doc object.
+ * This is executed before passing the doc's markdown property to the processor
+ * function to be turned into HTML.
+ *
+ * @param {Object} doc
+ * @param {Object} options
+ * @return {String}
+ * @api public
+ */
+
+WMD.preprocess = function (doc, options) {
+    return options.preprocessors.reduce(function (doc, fn) {
+        return fn(doc);
+    }, doc);
+};
+
+/**
+ * Runs all the postprocessors defined in options on the doc object.
+ * This is executed after passing the doc's markdown property to the processor
+ * function to be turned into HTML.
+ *
+ * @param {Object} doc
+ * @param {Object} options
+ * @return {String}
+ * @api public
+ */
+
+WMD.postprocess = function (doc, options) {
+    return options.postprocessors.reduce(function (doc, fn) {
+        return fn(doc);
+    }, doc);
+};

realms/templates/layout.html

@@ -98,9 +98,15 @@
     </div>
 
     <script src="/static/js/jquery-1.10.2.min.js"></script>
+    <script src="/static/js/underscore.js"></script>
     <script src="/static/js/bootstrap.min.js"></script>
-    <script src="/static/js/marked.js"></script>
+    <!--<script src="/static/js/marked.js"></script>-->
+    <script src="/static/js/handlebars.js"></script>
+    <script src="/static/js/showdown/showdown.js"></script>
+    <script src="/static/js/html-sanitizer-minified.js"></script>
+    <script src="/static/js/showdown/wmd.js"></script>
     <script>
+        /*
         marked.setOptions({
             gfm: true,
             tables: true,
@@ -110,7 +116,32 @@
             smartypants: false,
             langPrefix: 'lang-'
           });
-        var converter = marked;
+        */
+        MDR = {
+            doc: null,
+            callback: WMD,
+            convert: function(md, sanitize){
+                this.doc = this.callback(md);
+                md = this.doc.html;
+                if (sanitize) {
+                    md = html_sanitize(md);
+                }
+                md = this.hook(md);
+                return md;
+            },
+            hook: function(md) {
+                if (!this.doc.metadata) {
+                    return md;
+                }
+                try {
+                    var template = Handlebars.compile(md);
+                    return template(this.doc.metadata);
+                } catch(e) {
+                    return md;
+                }
+            }
+        };
+
     </script>
     {% block js %}{% endblock %}
   </body>

realms/templates/page/edit.html

@@ -1,6 +1,5 @@
 {% extends 'layout.html' %}
 {% block js %}
-    <script src="/static/js/html-css-sanitizer-minified.js"></script>
     <script src="/static/js/ace/ace.js"></script>
     <script src="/static/js/ace/mode-markdown.js"></script>
     <script src="/static/js/keymaster.min.js"></script>

realms/templates/page/page.html

@@ -16,7 +16,7 @@
 {% block js %}
     <script>
         $(function(){
-            $("#page-content").html(converter({{ page.data|tojson|safe }})).show();
+            $("#page-content").html(MDR.convert({{ page.data|tojson|safe }})).show();
         });
     </script>
 {% endblock %}

realms/wiki.py

@@ -1,6 +1,5 @@
 import os
 from lxml.html.clean import clean_html
-
 import ghdiff
 
 from gittle import Gittle
@@ -68,7 +67,8 @@ class Wiki():
         return True if s.get_by_name(name) else False
 
     def write_page(self, name, content, message=None, create=False, username=None, email=None):
-        content = clean_html(content)
+        # adding the div wrapper apparently fixes anomalies with the lxml parser with certain markdown
+        content = clean_html('<div>' + content + '</div>')
         filename = self.cname_to_filename(to_canonical(name))
         f = open(self.path + "/" + filename, 'w')
         f.write(content)