Add side argument in renderer.render() method

powerline/renderer.py

@@ -29,7 +29,7 @@ class Renderer(object):
 		else:
 			return self.theme
 
-	def render(self, mode, width=None, theme=None, segments=None):
+	def render(self, mode, width=None, theme=None, segments=None, side=None):
 		'''Render all segments.
 
 		When a width is provided, low-priority segments are dropped one at
@@ -39,7 +39,7 @@ class Renderer(object):
 		reached.
 		'''
 		theme = theme or self.get_theme()
-		segments = segments or theme.get_segments()
+		segments = segments or theme.get_segments(side)
 
 		# Handle excluded/included segments for the current mode
 		segments = [segment for segment in segments\

powerline/theme.py

@@ -15,26 +15,30 @@ class Theme(object):
 	def __init__(self, ext, colorscheme, theme_config, common_config):
 		self.colorscheme = colorscheme
 		self.dividers = theme_config.get('dividers', common_config['dividers'])
-		self.segments = []
+		self.segments = {
+			'left': [],
+			'right': [],
+			}
 		self.EMPTY_SEGMENT = {
 			'contents': None,
 			'highlight': defaultdict(lambda: {'fg': False, 'bg': False, 'attr': 0})
 			}
 		get_segment = Segment(ext, common_config['paths'], colorscheme, theme_config.get('default_module')).get
 		for side in ['left', 'right']:
-			self.segments.extend((get_segment(segment, side) for segment in theme_config['segments'].get(side, [])))
+			self.segments[side].extend((get_segment(segment, side) for segment in theme_config['segments'].get(side, [])))
 
 	def get_divider(self, side='left', type='soft'):
 		'''Return segment divider.'''
 		return self.dividers[side][type]
 
-	def get_segments(self):
+	def get_segments(self, side=None):
 		'''Return all segments.
 
 		Function segments are called, and all segments get their before/after
 		and ljust/rjust properties applied.
 		'''
-		for segment in self.segments:
+		for side in [side] if side else ['left', 'right']:
+			for segment in self.segments[side]:
 				if segment['type'] == 'function':
 					contents = segment['contents_func'](**segment['args'])
 					if contents is None: