markdown: understang github fencing

[nit.git] / src / markdown.nit

diff --git a/src/markdown.nit b/src/markdown.nit
index 344f469..ed73ead 100644 (file)
--- a/src/markdown.nit
+++ b/src/markdown.nit
@@ -37,6 +37,9 @@ private class Doc2Mdwn
                # Indent level of the current line
                var indent = 0
 
+               # Expected fencing closing tag (if any)
+               var in_fence: nullable String = null
+
                # The current element (p, li, etc.) if any
                var n: nullable HTMLTag = null
 
@@ -51,6 +54,20 @@ private class Doc2Mdwn
                        indent = 0
                        while text.length > indent and text.chars[indent] == ' ' do indent += 1
 
+                       # In a fence
+                       if in_fence != null then
+                               # fence closing
+                               if text.substring(0,in_fence.length) == in_fence then
+                                       close_codeblock(n or else root)
+                                       in_fence = null
+                                       continue
+                               end
+                               # else fence content
+                               curblock.add(text)
+                               curblock.add("\n")
+                               continue
+                       end
+
                        # Is codeblock? Then just collect them
                        if indent >= 4 then
                                var part = text.substring_from(4)
@@ -62,6 +79,14 @@ private class Doc2Mdwn
                        # Was a codblock just before the current line ?
                        close_codeblock(n or else root)
 
+                       # fence opening
+                       if text.substring(0,3) == "~~~" then
+                               var l = 3
+                               while l < text.length and text.chars[l] == '~' do l += 1
+                               in_fence = text.substring(0, l)
+                               continue
+                       end
+
                        # Cleanup the string
                        text = text.trim