From c133668dc9ae95e3afbb7fb08a4f2030d9584cb4 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 10 Aug 2009 21:28:04 +0000
Subject: Bug #280460 - Wrap os and os.path modules with unicode encode/decode
 wrappers for python-2.x.

svn path=/main/trunk/; revision=13978
---
 pym/portage/__init__.py      | 65 ++++++++++++++++++++++++++++++++++++++++++++
 pym/portage/dbapi/vartree.py |  5 +++-
 2 files changed, 69 insertions(+), 1 deletion(-)

(limited to 'pym')

diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index b26e8bd9c..358de52b7 100644
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -23,6 +23,7 @@ try:
 	import re
 	import shutil
 	import time
+	import types
 	try:
 		import cPickle as pickle
 	except ImportError:
@@ -123,6 +124,70 @@ except ImportError:
 # END OF IMPORTS -- END OF IMPORTS -- END OF IMPORTS -- END OF IMPORTS -- END
 # ===========================================================================
 
+def _unicode_encode(s):
+	if isinstance(s, unicode):
+		s = s.encode('utf_8', 'replace')
+	return s
+
+def _unicode_decode(s):
+	if not isinstance(s, unicode) and isinstance(s, basestring):
+		s = unicode(s, encoding='utf_8', errors='replace')
+	return s
+
+class _unicode_func_wrapper(object):
+	"""
+	Wraps a function, converts arguments from unicode to bytes,
+	and return values to unicode from bytes.
+	"""
+	__slots__ = ('_func',)
+
+	def __init__(self, func):
+		self._func = func
+
+	def __call__(self, *args, **kwargs):
+
+		wrapped_args = [_unicode_encode(x) for x in args]
+		if kwargs:
+			wrapped_kwargs = dict((_unicode_encode(k), _unicode_encode(v)) \
+				for k, v in kwargs.iteritems())
+		else:
+			wrapped_kwargs = {}
+
+		rval = self._func(*wrapped_args, **wrapped_kwargs)
+
+		if isinstance(rval, (basestring, list, tuple)):
+			if isinstance(rval, basestring):
+				rval = _unicode_decode(rval)
+			elif isinstance(rval, list):
+				rval = [_unicode_decode(x) for x in rval]
+			elif isinstance(rval, tuple):
+				rval = tuple(_unicode_decode(x) for x in rval)
+
+		return rval
+
+class _unicode_module_wrapper(object):
+	"""
+	Wraps a module and wraps all functions with _unicode_func_wrapper.
+	"""
+	__slots__ = ('_mod',)
+
+	def __init__(self, mod):
+		object.__setattr__(self, '_mod', mod)
+
+	def __getattribute__(self, attr):
+		result = getattr(object.__getattribute__(self, '_mod'), attr)
+		if isinstance(result, type):
+			pass
+		elif type(result) is types.ModuleType:
+			result = _unicode_module_wrapper(result)
+		elif hasattr(result, '__call__'):
+			result = _unicode_func_wrapper(result)
+		return result
+
+if sys.hexversion >= 0x3000000:
+	def _unicode_module_wrapper(mod):
+		return mod
+
 def _shell_quote(s):
 	"""
 	Quote a string in double-quotes and use backslashes to
diff --git a/pym/portage/dbapi/vartree.py b/pym/portage/dbapi/vartree.py
index 24e9d0c36..6109c81b4 100644
--- a/pym/portage/dbapi/vartree.py
+++ b/pym/portage/dbapi/vartree.py
@@ -33,7 +33,8 @@ from portage.localization import _
 
 from portage import listdir, dep_expand, digraph, flatten, key_expand, \
 	doebuild_environment, doebuild, env_update, prepare_build_dirs, \
-	abssymlink, movefile, _movefile, bsd_chflags, cpv_getkey
+	abssymlink, movefile, _movefile, bsd_chflags, cpv_getkey, \
+	_unicode_module_wrapper
 
 from portage.cache.mappings import slot_dict_class
 
@@ -43,6 +44,8 @@ import logging
 import sys
 from itertools import izip
 
+os = _unicode_module_wrapper(os)
+
 try:
 	import cPickle as pickle
 except ImportError:
-- 
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