Move common libs to libs/common

libs/common/pbr/tests/util.py

@@ -0,0 +1,78 @@
+# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Copyright (C) 2013 Association of Universities for Research in Astronomy
+#                    (AURA)
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#     1. Redistributions of source code must retain the above copyright
+#        notice, this list of conditions and the following disclaimer.
+#
+#     2. Redistributions in binary form must reproduce the above
+#        copyright notice, this list of conditions and the following
+#        disclaimer in the documentation and/or other materials provided
+#        with the distribution.
+#
+#     3. The name of AURA and its representatives may not be used to
+#        endorse or promote products derived from this software without
+#        specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+
+import contextlib
+import os
+import shutil
+import stat
+import sys
+
+try:
+    import ConfigParser as configparser
+except ImportError:
+    import configparser
+
+
+@contextlib.contextmanager
+def open_config(filename):
+    if sys.version_info >= (3, 2):
+            cfg = configparser.ConfigParser()
+    else:
+            cfg = configparser.SafeConfigParser()
+    cfg.read(filename)
+    yield cfg
+    with open(filename, 'w') as fp:
+        cfg.write(fp)
+
+
+def rmtree(path):
+    """shutil.rmtree() with error handler.
+
+    Handle 'access denied' from trying to delete read-only files.
+    """
+
+    def onerror(func, path, exc_info):
+        if not os.access(path, os.W_OK):
+            os.chmod(path, stat.S_IWUSR)
+            func(path)
+        else:
+            raise
+
+    return shutil.rmtree(path, onerror=onerror)