Deduplicate Monochrome locale .paks

tools/resources/filter_resource_whitelist.py

Index: tools/resources/filter_resource_whitelist.py
diff --git a/tools/resources/filter_resource_whitelist.py b/tools/resources/filter_resource_whitelist.py
new file mode 100755
index 0000000000000000000000000000000000000000..17f07b68e8cbdf57043242c7df3046a101e98222
--- /dev/null
+++ b/tools/resources/filter_resource_whitelist.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python

[agrieve, 2017/06/29 01:29:25]

Also: Add yourself (and me) to the OWNERS file here so that you can make updates
to this script if necessary.

[F, 2017/06/29 18:31:20]

Done.

+# 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.
+
+import argparse
+import os
+import re
+import sys
+
+USAGE = """filter_resource_whitelist.py [-h] [-i INPUT] [-f FILTER] [-o OUTPUT]

[agrieve, 2017/06/29 01:09:53]

nit: Use this as the __doc__ string (put before imports and remove USAGE =.

Assign it below using usage=__doc__

[F, 2017/06/29 18:31:20]

Done.

+
+INPUT specifies a resource whitelist file containing resource IDs that should
+be whitelisted, where each line of INPUT contains a single resource ID.
+
+FILTER specifies a resource whitelist file containing resource IDs that should
+not be whitelisted, where each line of FILTER contains a single resource ID.
+
+Filters a resource whitelist by removing resource IDs that are contained in a
+another resource whitelist.
+
+This script is used to generate Monochrome's locale paks.
+

[agrieve, 2017/06/29 01:09:53]

nit: remove blank line

[F, 2017/06/29 18:31:20]

Done.

+"""
+
+
+def main():
+  parser = argparse.ArgumentParser(usage=USAGE)
+  parser.add_argument(
+      '-i', '--input', type=argparse.FileType('r'), default=sys.stdin,

[agrieve, 2017/06/29 01:09:53]

nit: drop the short form arguments. They just serve to confuse when used.

[F, 2017/06/29 18:31:20]

Done.

+      help='A resource whitelist where each line contains one resource ID. '
+           'These IDs, excluding the ones in FILTER, are to be included.')
+  parser.add_argument(
+      '-f', '--filter', type=argparse.FileType('r'), default=sys.stdin,

[agrieve, 2017/06/29 01:09:53]

Seems strange to have two different flags default to stdin. Doesn't look like we
use stdin ever, so probably better to just change to required=true

[F, 2017/06/29 18:31:20]

Done.

+      help='A resource whitelist where each line contains one resource ID. '
+           'These IDs are to be excluded.')
+  parser.add_argument(
+      '-o', '--output', type=argparse.FileType('w'), default=sys.stdout,
+      help='The resource list path to write (default stdout)')
+  parser.add_argument(
+      '--out-dir', required=True,

[agrieve, 2017/06/29 01:09:53]

nit: call this '--output-directory' to be consistent with other scripts
(although I recognize there's already some variance, --output-directory is the
most common).

[F, 2017/06/29 18:31:20]

Done.

+      help='The out target directory, for example out/Release')
+
+  args = parser.parse_args()
+
+  input_resources = list(int(resource_id) for resource_id in args.input)
+  filter_resources = set(int(resource_id) for resource_id in args.filter)
+  output_resources = [resource_id for resource_id in input_resources
+                      if resource_id not in filter_resources]
+
+  for resource_id in sorted(output_resources):
+    args.output.write('%d\n' % resource_id)
+
+if __name__ == '__main__':
+  main()