a script to normalize json

this will be used to normalize *.json files in the tree
so that we can get more readable diffs.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

tools/normalize_json.py

@@ -0,0 +1,27 @@
+#! /usr/bin/env python
+
+# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
+# Copyright (C) 2013 YAMAMOTO Takashi <yamamoto at valinux co jp>
+#
+# 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.
+
+# usage example:
+# for x in ../ryu/tests/unit/ofproto/json/**/*.json;do echo $x;./normalize_json.py < $x > xx&& mv xx $x;done
+
+import json
+import sys
+
+j = sys.stdin.read()
+d = json.loads(j)
+print json.dumps(d, ensure_ascii=True, indent=3, sort_keys=True)