Fix non-ASCII directories processing

Fixes #788

powerline/lib/unicode.py

@@ -0,0 +1,13 @@
+# vim:fileencoding=utf-8:noet
+
+try:
+	from __builtin__ import unicode
+except ImportError:
+	unicode = str  # NOQA
+
+
+def u(s):
+	if type(s) is unicode:
+		return s
+	else:
+		return unicode(s, 'utf-8')

powerline/segments/common.py

@@ -17,6 +17,7 @@ from powerline.lib.vcs import guess, tree_status
 from powerline.lib.threaded import ThreadedSegment, KwThreadedSegment, with_docstring
 from powerline.lib.monotonic import monotonic
 from powerline.lib.humanize_bytes import humanize_bytes
+from powerline.lib.unicode import u
 from powerline.theme import requires_segment_info
 from collections import namedtuple
 
@@ -91,7 +92,7 @@ def cwd(pl, segment_info, dir_shorten_len=None, dir_limit_depth=None, use_path_s
 	Highlight groups used: ``cwd:current_folder`` or ``cwd``. It is recommended to define all highlight groups.
 	'''
 	try:
-		cwd = segment_info['getcwd']()
+		cwd = u(segment_info['getcwd']())
 	except OSError as e:
 		if e.errno == 2:
 			# user most probably deleted the directory
@@ -100,7 +101,7 @@ def cwd(pl, segment_info, dir_shorten_len=None, dir_limit_depth=None, use_path_s
 			cwd = "[not found]"
 		else:
 			raise
-	home = segment_info['home']
+	home = u(segment_info['home'])
 	if home:
 		cwd = re.sub('^' + re.escape(home), '~', cwd, 1)
 	cwd_split = cwd.split(os.sep)
@@ -335,7 +336,7 @@ class WeatherSegment(ThreadedSegment):
 		import json
 
 		if not self.url:
-			# Do not lock attribute assignments in this branch: they are used 
+			# Do not lock attribute assignments in this branch: they are used
 			# only in .update()
 			if not self.location:
 				location_data = json.loads(urllib_read('http://freegeoip.net/json/'))
@@ -428,12 +429,12 @@ weather conditions.
 :param str temp_format:
 	format string, receives ``temp`` as an argument. Should also hold unit.
 :param float temp_coldest:
-	coldest temperature. Any temperature below it will have gradient level equal 
+	coldest temperature. Any temperature below it will have gradient level equal
 	to zero.
 :param float temp_hottest:
-	hottest temperature. Any temperature above it will have gradient level equal 
+	hottest temperature. Any temperature above it will have gradient level equal
-	to 100. Temperatures between ``temp_coldest`` and ``temp_hottest`` receive 
+	to 100. Temperatures between ``temp_coldest`` and ``temp_hottest`` receive
-	gradient level that indicates relative position in this interval 
+	gradient level that indicates relative position in this interval
 	(``100 * (cur-coldest) / (hottest-coldest)``).
 
 Divider highlight group used: ``background:divider``.
@@ -453,17 +454,17 @@ def system_load(pl, format='{avg:.1f}', threshold_good=1, threshold_bad=2, track
 	:param str format:
 		format string, receives ``avg`` as an argument
 	:param float threshold_good:
-		threshold for gradient level 0: any normalized load average below this 
+		threshold for gradient level 0: any normalized load average below this
 		value will have this gradient level.
 	:param float threshold_bad:
-		threshold for gradient level 100: any normalized load average above this 
+		threshold for gradient level 100: any normalized load average above this
-		value will have this gradient level. Load averages between 
+		value will have this gradient level. Load averages between
-		``threshold_good`` and ``threshold_bad`` receive gradient level that 
+		``threshold_good`` and ``threshold_bad`` receive gradient level that
 		indicates relative position in this interval:
 		(``100 * (cur-good) / (bad-good)``).
 		Note: both parameters are checked against normalized load averages.
 	:param bool track_cpu_count:
-		if True powerline will continuously poll the system to detect changes 
+		if True powerline will continuously poll the system to detect changes
 		in the number of CPUs.
 
 	Divider highlight group used: ``background:divider``.
@@ -629,7 +630,7 @@ elif 'psutil' in globals():
 	from time import time
 
 	def _get_uptime():  # NOQA
-		# psutil.BOOT_TIME is not subject to clock adjustments, but time() is. 
+		# psutil.BOOT_TIME is not subject to clock adjustments, but time() is.
 		# Thus it is a fallback to /proc/uptime reading and not the reverse.
 		return int(time() - psutil.BOOT_TIME)
 else:
@@ -780,10 +781,10 @@ falls back to reading
 :param str sent_format:
 	format string, receives ``value`` as argument
 :param float recv_max:
-	maximum number of received bytes per second. Is only used to compute 
+	maximum number of received bytes per second. Is only used to compute
 	gradient level
 :param float sent_max:
-	maximum number of sent bytes per second. Is only used to compute gradient 
+	maximum number of sent bytes per second. Is only used to compute gradient
 	level
 
 Divider highlight group used: ``background:divider``.
@@ -855,8 +856,8 @@ email_imap_alert = with_docstring(EmailIMAPSegment(),
 :param str folder:
 	folder to check for e-mails
 :param int max_msgs:
-	Maximum number of messages. If there are more messages then max_msgs then it 
+	Maximum number of messages. If there are more messages then max_msgs then it
-	will use gradient level equal to 100, otherwise gradient level is equal to 
+	will use gradient level equal to 100, otherwise gradient level is equal to
 	``100 * msgs_num / max_msgs``. If not present gradient is not computed.
 
 Highlight groups used: ``email_alert_gradient`` (gradient), ``email_alert``.

powerline/theme.py

@@ -1,19 +1,7 @@
 # vim:fileencoding=utf-8:noet
 
-from .segment import gen_segment_getter
+from powerline.segment import gen_segment_getter
-
+from powerline.lib.unicode import u, unicode
-
-try:
-	from __builtin__ import unicode
-except ImportError:
-	unicode = str  # NOQA
-
-
-def u(s):
-	if type(s) is unicode:
-		return s
-	else:
-		return unicode(s, 'utf-8')
 
 
 def requires_segment_info(func):