1 files changed, 59 insertions, 0 deletions
diff --git a/app/utils/string_utils.py b/app/utils/string_utils.py
new file mode 100644
index 0000000..1f51992
--- /dev/null
+++ b/app/utils/string_utils.py
@@ -0,0 +1,59 @@
+###############################################################################
+# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems)   #
+# and others                                                                  #
+#                                                                             #
+# All rights reserved. This program and the accompanying materials            #
+# are made available under the terms of the Apache License, Version 2.0       #
+# which accompanies this distribution, and is available at                    #
+# http://www.apache.org/licenses/LICENSE-2.0                                  #
+###############################################################################
+import json
+from datetime import datetime
+
+from bson import ObjectId
+
+
+def jsonify(obj, prettify=False):
+    if prettify:
+        return json.dumps(obj, sort_keys=True, indent=4, separators=(',', ': '))
+    else:
+        return json.dumps(obj)
+
+
+# stringify datetime object
+def stringify_datetime(dt):
+    return dt.strftime("%Y-%m-%dT%H:%M:%S.%f%z")
+
+
+# stringify ObjectId
+def stringify_object_id(object_id):
+    return str(object_id)
+
+
+stringify_map = {
+    ObjectId: stringify_object_id,
+    datetime: stringify_datetime
+}
+
+
+def stringify_object_values_by_type(obj, object_type):
+    if isinstance(obj, dict):
+        for key, value in obj.items():
+            if isinstance(value, object_type):
+                obj[key] = stringify_map[object_type](value)
+            else:
+                stringify_object_values_by_type(value, object_type)
+    elif isinstance(obj, list):
+        for index, value in enumerate(obj):
+            if isinstance(value, object_type):
+                obj[index] = stringify_map[object_type](value)
+            else:
+                stringify_object_values_by_type(value, object_type)
+
+
+# convert some values of the specific types of the object into string
+# e.g convert all the ObjectId to string
+#     convert all the datetime object to string
+def stringify_object_values_by_types(obj, object_types):
+    for object_type in object_types:
+        stringify_object_values_by_type(obj, object_type)