1 files changed, 81 insertions, 0 deletions
diff --git a/app/toscalib/utils/validateutils.py b/app/toscalib/utils/validateutils.py
new file mode 100644
index 0000000..dca08b1
--- /dev/null
+++ b/app/toscalib/utils/validateutils.py
@@ -0,0 +1,81 @@
+#    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 collections
+import dateutil.parser
+import numbers
+
+import six
+
+#from toscalib.utils.gettextutils import _
+
+
+def str_to_num(value):
+    '''Convert a string representation of a number into a numeric type.'''
+    if isinstance(value, numbers.Number):
+        return value
+    try:
+        return int(value)
+    except ValueError:
+        return float(value)
+
+
+def validate_number(value):
+    return str_to_num(value)
+
+
+def validate_integer(value):
+    if not isinstance(value, int):
+        try:
+            value = int(value)
+        except Exception:
+            raise ValueError(_('"%s" is not an integer') % value)
+    return value
+
+
+def validate_float(value):
+    if not isinstance(value, float):
+        raise ValueError(_('"%s" is not a float') % value)
+    return validate_number(value)
+
+
+def validate_string(value):
+    if not isinstance(value, six.string_types):
+        raise ValueError(_('"%s" is not a string') % value)
+    return value
+
+
+def validate_list(value):
+    if not isinstance(value, list):
+        raise ValueError(_('"%s" is not a list') % value)
+    return value
+
+
+def validate_map(value):
+    if not isinstance(value, collections.Mapping):
+        raise ValueError(_('"%s" is not a map') % value)
+    return value
+
+
+def validate_boolean(value):
+    if isinstance(value, bool):
+        return value
+
+    if isinstance(value, str):
+        normalised = value.lower()
+        if normalised in ['true', 'false']:
+            return normalised == 'true'
+    raise ValueError(_('"%s" is not a boolean') % value)
+
+
+def validate_timestamp(value):
+    return dateutil.parser.parse(value)