hash comment plugin

README.rst

@@ -43,9 +43,10 @@ I use Snaked for all my python development tasks. Following features are impleme
 - Storing last edit position for every file.
 - Python smart indent.
 - Saving quick open project history and switch between them on ``<alt>Up``/``<alt>Down``.
-- Tabs. Switching on ``<alt>Left/<alt>Right``
-- Python outline navigator on ``<ctrl>o``
+- Tabs. Switching on ``<alt>Left/<alt>Right``.
+- Python outline navigator on ``<ctrl>o``.
 - Feedback messages api. For example syntax errors on python autocomplete and so on.
+- Hash comment plugin for commenting python, ruby, etc... code. Activated on ``<ctrl>slash``.
 
 Current progress may be seen in `@a_bobrov <http://twitter.com/a_bobrov>`_.
 

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name     = 'snaked',
-    version  = '0.3.dev3',
+    version  = '0.3.dev4',
     author   = 'Anton Bobrov',
     author_email = 'bobrov@vl.ru',
     description = 'Very light and minimalist editor inspired by Scribes',

snaked/plugins/hash_comment/__init__.py

@@ -0,0 +1,73 @@
+import gtk
+
+langs = ['python', 'sh', 'ruby', 'perl']
+
+def init(manager):
+    manager.add_shortcut('comment-code', '<ctrl>slash', 'Edit',
+        'Comments/uncomments current line or selection', comment)
+
+#Action
+def comment(editor):
+    r = get_bounds(editor)
+    traversor = make_line_traversor(editor.buffer, r)
+
+    if all(line_is_hashed(l) for l in traversor()):
+        uncomment_range(editor, traversor)
+    else:
+        comment_range(editor, traversor)
+
+def make_line_traversor(buffer, r):
+    start, end = r
+    start, stop = start.get_line(), end.get_line() + 1
+    def inner():
+        for i in xrange(start, stop):
+            yield buffer.get_iter_at_line(i)
+
+    return inner
+
+def get_bounds(editor):
+    if editor.buffer.get_has_selection():
+        start, end = editor.buffer.get_selection_bounds()        
+        if start.ends_line():
+            start.set_line(start.get_line() + 1)
+
+        if end.starts_line():
+            end.set_line(end.get_line() - 1)
+
+        return start, end
+    else:
+        cursor = editor.cursor
+        return cursor, cursor.copy()
+
+def line_is_hashed(iter):
+    text = get_line_text(iter).strip()
+    return not text or text[0] == u'#'
+
+def get_line_text(iter):    
+    if not iter.starts_line():
+        iter = iter.copy()
+        iter.set_line(iter.get_line())
+
+    end = iter.copy()
+    if not end.ends_line():
+        end.forward_to_line_end()
+
+    return iter.get_text(end)
+
+def line_is_empty(iter):
+    return get_line_text(iter).strip() == u''
+
+def comment_range(editor, traversor):
+    editor.buffer.begin_user_action()
+    for iter in traversor():
+        editor.buffer.insert(iter, u'#')
+
+    editor.buffer.end_user_action()
+
+def uncomment_range(editor, traversor):
+    editor.buffer.begin_user_action()
+    for iter in traversor():
+        if not line_is_empty(iter):
+            editor.buffer.delete(*iter.forward_search(u'#', gtk.TEXT_SEARCH_VISIBLE_ONLY))
+
+    editor.buffer.end_user_action()