add basic rst sanity checker

does the spec file end in .rst and does it wrap at 80 columns for
readability.

Change-Id: I48352a1d79f38df936f424bf9290430c0258d79d

run_tests.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# check basic sanity
+./tools/rstcheck.py -d specs

tools/rstcheck.py

@@ -0,0 +1,68 @@
+#!/usr/bin/python
+
+# Copyright 2014 Samsung Electronics
+# All Rights Reserved.
+#
+#    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 argparse
+import fileinput
+import os
+import re
+import sys
+
+ERRORS = 0
+
+def error(msg):
+    global ERRORS
+    ERRORS += 1
+    print(msg)
+
+def get_options():
+    parser = argparse.ArgumentParser(
+        description='RST sanity checker')
+    parser.add_argument('-d', '--dir', help="Specifications Directory",
+                        default="specs")
+    return parser.parse_args()
+
+def find_rst_files(dirname):
+    files = []
+    for root, dirnames, filenames in os.walk(dirname):
+        for f in filenames:
+            if f != ".keep":
+                files.append("%s/%s" % (root, f))
+    return files
+
+def ensure_files_end_in_rst(files):
+    for fname in files:
+        if not re.search("\.rst$", fname):
+            error("E001: Filename %s does not end in .rst" % fname)
+
+def ensure_lt80(files):
+    for fname in files:
+        for line in fileinput.input(fname):
+            if len(line) > 80:
+                error("E002: File %s exceeds 80 columns" % fname)
+
+def main():
+    opts = get_options()
+    files = find_rst_files(opts.dir)
+    ensure_files_end_in_rst(files)
+    ensure_lt80(files)
+    if ERRORS > 0:
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())