Moving mojo/validation test into LayoutTests

mojo/public/tools/bindings/gen_data_files_list.py

+# Copyright 2017 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""Generates a list of all files in a directory

[yzshen1, 2017/03/27 00:29:17]

style nit: trailing ".", please.

+
+This script takes in a directory and an output file name as input.
+It then reads the directory and creates a list of all file names
+in that directory.  The list is written to the output file.
+There is also an option to pass in '-p' or '--pattern'
+which will check each file name against a regular expression
+pattern that is passed in.  Only files which match the regex
+will be written to the list.
+"""
+
+from optparse import OptionParser
+from os import listdir
+import re
+import sys
+
+def main():
+  parser = OptionParser()
+  parser.add_option('-d', '--directory', help='Read files from DIRECTORY')
+  parser.add_option('-o', '--output', help='Write list to FILE')
+  parser.add_option('-p',
+                    '--pattern',
+                    help='Only reads files that name matches PATTERN',
+                    default=".")
+  (options, _) = parser.parse_args()
+  pattern = re.compile(options.pattern)
+  files = [ f for f in listdir(options.directory) if pattern.match(f)]
+  out = file(options.output, 'w')
+  with out:
+    for f in files:
+      out.write(f + '\n')
+
+if __name__ == '__main__':
+  sys.exit(main())