add settings for YAML/TOML header #17

.sublime/MarkdownLivePreview.sublime-settings

@@ -8,5 +8,9 @@
     // When the preview is opened, the markdown file is closed in the origin window and reopend in
     // the preview window. If this option is set to 'true', then the markdown file will NOT be
     // closed in the origin window
-    "keep_open_when_opening_preview": false
+    "keep_open_when_opening_preview": false,
+
+    // Choose what to do with YAML/TOML (---/+++ respectively) headers
+    // Valid values: "wrap_in_pre", "remove".
+    "header_action": "wrap_in_pre"
 }

MLPApi.py

@@ -48,8 +48,12 @@ def get_style():
     return content
 
 def markdown2html(md, basepath):
+    # removes/format the header.
+    md = manage_header(md, get_settings().get('header_action'))
+
     html = '<style>\n{}\n</style>\n'.format(get_style())
 
+
     # the option no-code-highlighting does not exists in the official version of markdown2 for now
     # I personaly edited the file (markdown2.py:1743)
     html += md2.markdown(md, extras=['fenced-code-blocks', 'no-code-highlighting', 'tables'])

functions.py

@@ -11,12 +11,25 @@ def plugin_loaded():
     loading = sublime.load_resource('Packages/MarkdownLivePreview/loading.txt')
     error404 = sublime.load_resource('Packages/MarkdownLivePreview/404.txt')
 
+MATCH_YAML_HEADER = re.compile(r'^([\-\+])\1{2}\n(?P<content>.+)\n\1{3}\n', re.DOTALL)
+
 def strip_html_comments(html):
     soup = BeautifulSoup(html, 'html.parser')
     for element in soup.find_all(text=lambda text: isinstance(text, html_comment)):
         element.extract()
     return str(soup)
 
+def manage_header(md, action):
+    matchobj = MATCH_YAML_HEADER.match(md)
+    if not matchobj:
+        return md
+    if action == 'remove':
+        return md[len(matchobj.group(0)):]
+    elif action == 'wrap_in_pre':
+        return '<pre><code>' + matchobj.group('content') + '</code></pre>' \
+        + md[len(matchobj.group(0)):]
+
+    raise ValueError('Got an unknown action: "{}"'.format(action))
 
 def get_preview_name(md_view):
     file_name = md_view.file_name()

sample.md

@@ -1,7 +1,9 @@
 ---
 title: Demo
-description: Preview your markdown!
+description: Preview your markdown right in Sublime Text! 
+hope: You'll enjoy using it!
 ---
+
 # Hello world
 
 <!-- supports comments -->
@@ -33,7 +35,7 @@ if you is moods.curious:
 | 45        | John  |
 | `<table>` | `><`  |
 
-[Sublime Text Logo](https://upload.wikimedia.org/wikipedia/en/4/4c/Sublime_Text_Logo.png)
+![Sublime Text Logo](https://upload.wikimedia.org/wikipedia/en/4/4c/Sublime_Text_Logo.png)
 
 Some plugin I just *need*: