1 files changed, 104 insertions, 0 deletions
diff --git a/client/powerline.py b/client/powerline.py
new file mode 100755
index 0000000..28492c1
--- /dev/null
+++ b/client/powerline.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8:noet
+from __future__ import (unicode_literals, division, absolute_import, print_function)
+
+import sys
+import socket
+import errno
+import os
+
+try:
+	from posix import environ
+except ImportError:
+	from os import environ
+
+# XXX Hack for importing powerline modules to work.
+sys.path.pop(0)
+
+try:
+	from powerline.lib.encoding import get_preferred_output_encoding
+except ImportError:
+	sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(os.path.realpath(__file__)))))
+	from powerline.lib.encoding import get_preferred_output_encoding
+
+
+if len(sys.argv) < 2:
+	print('Must provide at least one argument.', file=sys.stderr)
+	raise SystemExit(1)
+
+use_filesystem = not sys.platform.lower().startswith('linux')
+
+if sys.argv[1] == '--socket':
+	address = sys.argv[2]
+	if not use_filesystem:
+		address = '\0' + address
+	del sys.argv[1:3]
+else:
+	address = ('/tmp/powerline-ipc-%d' if use_filesystem else '\0powerline-ipc-%d') % os.getuid()
+
+sock = socket.socket(family=socket.AF_UNIX)
+
+
+def eintr_retry_call(func, *args, **kwargs):
+	while True:
+		try:
+			return func(*args, **kwargs)
+		except EnvironmentError as e:
+			if getattr(e, 'errno', None) == errno.EINTR:
+				continue
+			raise
+
+
+try:
+	eintr_retry_call(sock.connect, address)
+except Exception:
+	# Run the powerline renderer
+	args = ['powerline-render'] + sys.argv[1:]
+	os.execvp('powerline-render', args)
+
+fenc = get_preferred_output_encoding()
+
+
+def tobytes(s):
+	if isinstance(s, bytes):
+		return s
+	else:
+		return s.encode(fenc)
+
+
+args = [tobytes('%x' % (len(sys.argv) - 1))]
+args.extend((tobytes(s) for s in sys.argv[1:]))
+
+
+try:
+	cwd = os.getcwd()
+except EnvironmentError:
+	pass
+else:
+	if not isinstance(cwd, bytes):
+		cwd = cwd.encode(fenc)
+	args.append(cwd)
+
+
+args.extend((tobytes(k) + b'=' + tobytes(v) for k, v in environ.items()))
+
+EOF = b'\0\0'
+
+for a in args:
+	eintr_retry_call(sock.sendall, a + b'\0')
+
+eintr_retry_call(sock.sendall, EOF)
+
+received = []
+while True:
+	r = sock.recv(4096)
+	if not r:
+		break
+	received.append(r)
+
+sock.close()
+
+if sys.version_info < (3,):
+	sys.stdout.write(b''.join(received))
+else:
+	sys.stdout.buffer.write(b''.join(received))