Fix issues found in 1256 pull request

Ref #1256

docs/source/usage/wm-widgets.rst

@@ -47,18 +47,19 @@ Add the following to :file:`~/.config/qtile/config.py`:
 .. _bar-usage:
 
 LemonBoy’s bar
-=============
+==============
 
-To run the bar simply pipe the output of the binding script into ``bar`` and specify appropriate
+To run the bar simply pipe the output of the binding script into ``bar`` and 
-options, for example like this::
+specify appropriate options, for example like this::
 
-    python powerline-bar.py | bar -f "-xos4-*"
+    python /path/to/powerline/bindings/bar/powerline-bar.py | bar
 
 to run with i3, simply ``exec`` this in i3 config file::
 
-    exec python powerline-bar.py | bar -f "-xos4-*"
+    exec python /path/to/powerline/bindings/bar/powerline-bar.py --i3 | bar
 
-See the `bar documentation <https://github.com/LemonBoy/bar>`_ for more information and options.
+See the `bar documentation <https://github.com/LemonBoy/bar>`_ for more 
+information and options.
 
 I3 bar
 ======

powerline/bindings/bar/powerline-bar.py

@@ -4,38 +4,37 @@ from __future__ import (unicode_literals, division, absolute_import, print_funct
 
 import sys
 import time
-import i3
+
 from threading import Lock
+from argparse import ArgumentParser
+
 from powerline import Powerline
 from powerline.lib.monotonic import monotonic
 
-if __name__ == '__main__':
-	name = 'wm'
-	if len(sys.argv) > 1:
-		name = sys.argv[1]
 
-	powerline = Powerline( name, renderer_module='bar' )
+if __name__ == '__main__':
+	parser = ArgumentParser(description='Powerline BAR bindings.')
+	parser.add_argument(
+		'--i3', action='store_true',
+		help='Subscribe for i3 events.'
+	)
+	args = parser.parse_args()
+	powerline = Powerline('wm', renderer_module='bar')
 	powerline.update_renderer()
 
 	interval = 0.5
 	lock = Lock()
 
-	def encode( str ): return str.encode('utf-8')
-
-	if sys.version_info > (3,0):
-		def encode( str ): return str
-
 	def render(event=None, data=None, sub=None):
 		global lock
 		with lock:
-			ln = '%{l}'
+			print(powerline.render())
-			ln += powerline.render(side='left')
-			ln += '%{r}'
-			ln += powerline.render(side='right')
-			print( encode(ln) )
 			sys.stdout.flush()
 
+	if args.i3:
+		import i3
 		sub = i3.Subscription(render, 'workspace')
+
 	while True:
 		start_time = monotonic()
 		render()

powerline/renderers/bar.py

@@ -2,7 +2,7 @@
 from __future__ import (unicode_literals, division, absolute_import, print_function)
 
 from powerline.renderer import Renderer
-from powerline.colorscheme import ATTR_BOLD, ATTR_ITALIC, ATTR_UNDERLINE
+from powerline.colorscheme import ATTR_UNDERLINE
 
 
 class BarRenderer(Renderer):
@@ -35,5 +35,11 @@ class BarRenderer(Renderer):
 
 		return text + contents + '%{F-B--u}'
 
+	def render(self):
+		return '%{{l}}{0}%{{r}}{1}'.format(
+			super(BarRenderer, self).render(side='left'),
+			super(BarRenderer, self).render(side='right'),
+		)
+
 
 renderer = BarRenderer

tests/test_configuration.py

@@ -824,23 +824,30 @@ class TestVim(TestCase):
 	def tearDownClass(cls):
 		sys.path.pop(0)
 
-class TestBar(TestCase):
+
+class TestBar(TestRender):
 	def test_bar(self):
 		import powerline as powerline_module
 		with swap_attributes(config, powerline_module):
-			with get_powerline_raw(config, powerline_module, ext='wm', renderer_module='bar') as powerline:
+			with get_powerline_raw(config, powerline_module.Powerline, replace_gcp=True, ext='wm', renderer_module='bar') as powerline:
-				self.assertEqual("%{{l}}{}%{{r}}{}".format(powerline.render(side='left'), powerline.render(side='right')), "SOME_STRING_HERE")
+				self.assertRenderEqual(
+					powerline,
+					'%{l}%{F#ffc00000}%{B#ff008000}%{+u} A%{F-B--u}%{F#ff008000}%{B#ffc00000}>>%{F-B--u}%{F#ff008000}%{B#ffc00000}B%{F-B--u}%{F#ffc00000}>>%{F-B--u}%{r}%{F#ffc00000}<<%{F-B--u}%{F#ff804000}%{B#ffc00000}%{+u}C%{F-B--u}%{F#ff0000c0}%{B#ffc00000}<<%{F-B--u}%{F#ff008000}%{B#ff0000c0}D %{F-B--u}'
+				)
 
-	def test_bar_escape(self):
+	@with_new_config
-		from powerline.shell import ShellPowerline
+	def test_bar_escape(self, config):
 		import powerline as powerline_module
-		config['themes/wm/default']['segments']['left'] = {
+		config['themes/wm/default']['segments']['left'] = (
 			highlighted_string('%{asd}', 'hl1'),
 			highlighted_string('10% %', 'hl2'),
-		}
+		)
 		with swap_attributes(config, powerline_module):
-			with get_powerline_raw(config, powerline_module, ext='wm', renderer_module='bar') as powerline:
+			with get_powerline_raw(config, powerline_module.Powerline, replace_gcp=True, ext='wm', renderer_module='bar') as powerline:
-				self.assertEqual(powerline.render(side='left'), "SOME_STRING_HERE")
+				self.assertRenderEqual(
+					powerline,
+					'%{l}%{F#ffc00000}%{B#ff008000}%{+u} %%{asd}%{F-B--u}%{F#ff008000}%{B#ffc00000}>>%{F-B--u}%{F#ff008000}%{B#ffc00000}10%% %%%{F-B--u}%{F#ffc00000}>>%{F-B--u}%{r}%{F#ffc00000}<<%{F-B--u}%{F#ff804000}%{B#ffc00000}%{+u}C%{F-B--u}%{F#ff0000c0}%{B#ffc00000}<<%{F-B--u}%{F#ff008000}%{B#ff0000c0}D %{F-B--u}'
+				)
 
 
 if __name__ == '__main__':