1 files changed, 68 insertions, 0 deletions
diff --git a/troveclient/utils.py b/troveclient/utils.py
new file mode 100644
index 0000000..3deb806
--- /dev/null
+++ b/troveclient/utils.py
@@ -0,0 +1,68 @@
+#    Copyright 2012 OpenStack LLC
+#
+#    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.
+
+import os
+import re
+import sys
+
+
+class HookableMixin(object):
+    """Mixin so classes can register and run hooks."""
+    _hooks_map = {}
+
+    @classmethod
+    def add_hook(cls, hook_type, hook_func):
+        if hook_type not in cls._hooks_map:
+            cls._hooks_map[hook_type] = []
+
+        cls._hooks_map[hook_type].append(hook_func)
+
+    @classmethod
+    def run_hooks(cls, hook_type, *args, **kwargs):
+        hook_funcs = cls._hooks_map.get(hook_type) or []
+        for hook_func in hook_funcs:
+            hook_func(*args, **kwargs)
+
+
+def env(*vars, **kwargs):
+    """
+    returns the first environment variable set
+    if none are non-empty, defaults to '' or keyword arg default
+    """
+    for v in vars:
+        value = os.environ.get(v, None)
+        if value:
+            return value
+    return kwargs.get('default', '')
+
+
+_slugify_strip_re = re.compile(r'[^\w\s-]')
+_slugify_hyphenate_re = re.compile(r'[-\s]+')
+
+
+# http://code.activestate.com/recipes/
+#   577257-slugify-make-a-string-usable-in-a-url-or-filename/
+def slugify(value):
+    """
+    Normalizes string, converts to lowercase, removes non-alpha characters,
+    and converts spaces to hyphens.
+
+    From Django's "django/template/defaultfilters.py".
+    """
+    import unicodedata
+    if not isinstance(value, unicode):
+        value = unicode(value)
+    value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore')
+    value = unicode(_slugify_strip_re.sub('', value).strip().lower())
+    return _slugify_hyphenate_re.sub('-', value)