CI: Add pre-commit for esp-idf project.

add tools/ci/python_packages/idf_ci.py for some util functions used in
ci and needs multi-os solution

tools/ci/check_executables.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+#
+# Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+#
+# 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 os
+from sys import exit
+
+
+def _strip_each_item(iterable):
+    res = []
+    for item in iterable:
+        if item:
+            res.append(item.strip())
+    return res
+
+
+IDF_PATH = os.getenv('IDF_PATH', os.getcwd())
+EXECUTABLE_LIST_FN = os.path.join(IDF_PATH, 'tools/ci/executable-list.txt')
+known_executables = _strip_each_item(open(EXECUTABLE_LIST_FN).readlines())
+
+
+def check_executable_list():
+    ret = 0
+    for index, fn in enumerate(known_executables):
+        if not os.path.exists(os.path.join(IDF_PATH, fn)):
+            print('{}:{} {} not exists. Please remove it manually'.format(EXECUTABLE_LIST_FN, index + 1, fn))
+            ret = 1
+    return ret
+
+
+def check_executables(files):
+    ret = 0
+    for fn in files:
+        if fn not in known_executables:
+            print('"{}" is not in {}'.format(fn, EXECUTABLE_LIST_FN))
+            ret = 1
+    return ret
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--action', choices=['executables', 'list'], required=True,
+                        help='if "executables", pass all your executables to see if it\'s in the list.'
+                             'if "list", check if all items on your list exist')
+    parser.add_argument('filenames', nargs='*', help='Filenames to check.')
+    args = parser.parse_args()
+
+    if args.action == 'executables':
+        ret = check_executables(args.filenames)
+    elif args.action == 'list':
+        ret = check_executable_list()
+    else:
+        raise ValueError
+
+    return ret
+
+
+if __name__ == '__main__':
+    exit(main())