Replace Markdown parser.

2013-08-08 18:14:12 -04:00
parent 0d2b4aeb61
commit 7f69a58439
24 changed files with 2204 additions and 3140 deletions
@@ -0,0 +1,87 @@
+/**
+  Support for github style code blocks, here you begin with three backticks and supply a language,
+  The language is made into a class on the resulting `<code>` element.
+
+  @event register
+  @namespace Discourse.Dialect
+**/
+Discourse.Dialect.on("register", function(event) {
+  var dialect = event.dialect,
+      MD = event.MD;
+
+  /**
+    Support for github style code blocks
+
+    @method githubCode
+    @param {Markdown.Block} block the block to examine
+    @param {Array} next the next blocks in the sequence
+    @return {Array} the JsonML containing the markup or undefined if nothing changed.
+    @namespace Discourse.Dialect
+  **/
+  dialect.block['github_code'] = function githubCode(block, next) {
+    var m = /^`{3}([^\n]+)?\n?([\s\S]*)?/gm.exec(block);
+
+    if (m) {
+      var startPos = block.indexOf(m[0]),
+          leading,
+          codeContents = [],
+          result = [],
+          lineNumber = block.lineNumber;
+
+      if (startPos > 0) {
+        leading = block.slice(0, startPos);
+        lineNumber += (leading.split("\n").length - 1);
+
+        var para = ['p'];
+        this.processInline(leading).forEach(function (l) {
+          para.push(l);
+        });
+
+        result.push(para);
+      }
+
+      if (m[2]) { next.unshift(MD.mk_block(m[2], null, lineNumber + 1)); }
+
+      while (next.length > 0) {
+        var b = next.shift(),
+            n = b.match(/([^`]*)```([^`]*)/m),
+            diff = ((typeof b.lineNumber === "undefined") ? lineNumber : b.lineNumber) - lineNumber;
+
+        lineNumber = b.lineNumber;
+        for (var i=1; i<diff; i++) {
+          codeContents.push("");
+        }
+
+        if (n) {
+          if (n[2]) {
+            next.unshift(MD.mk_block(n[2]));
+          }
+
+          codeContents.push(n[1].trim());
+          break;
+        } else {
+          codeContents.push(b);
+        }
+      }
+      result.push(['p', ['pre', ['code', {'class': m[1] || 'lang-auto'}, codeContents.join("\n") ]]]);
+      return result;
+    }
+  };
+
+});
+
+/**
+  Ensure that content in a code block is fully escaped. This way it's not white listed
+  and we can use HTML and Javascript examples.
+
+  @event parseNode
+  @namespace Discourse.Dialect
+**/
+Discourse.Dialect.on("parseNode", function(event) {
+  var node = event.node,
+      path = event.path;
+
+  if (node[0] === 'code') {
+    node[node.length-1] = Handlebars.Utils.escapeExpression(node[node.length-1]);
+  }
+});