Added helper scripts for modifying polymer_resources.grdp.

tools/polymer/txt_to_polymer_grdp.py

+#!/usr/bin/env python
+# Copyright 2015 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.
+
+from __future__ import with_statement

[Dan Beam, 2015/03/17 16:37:53]

why is this necessary? just to use with?

[dzhioev (left Google), 2015/03/17 18:26:46]

Yep.

+import string
+import sys
+
+
+FILE_TEMPLATE = \
+"""<?xml version="1.0" encoding="utf-8"?>
+<!--
+  This file is generated.
+  Please use 'src/tools/polymer/polymer_grdp_to_txt.py' and
+  'src/tools/polymer/txt_to_polymer_grdp.py' to modify it, if possible.
+
+  'polymer_grdp_to_txt.py' converts 'polymer_resources.grdp' to a plane list of
+  used Polymer components:
+    ...
+    core-animation/core-animation.html
+    core-animation/web-animations.html
+    core-collapse/core-collapse-extracted.js
+    core-collapse/core-collapse.css
+    core-collapse/core-collapse.html
+    core-dropdown/core-dropdown-base-extracted.js
+    ...
+
+  'txt_to_polymer_grdp.py' converts list back to GRDP file.
+
+  Usage:
+    $ polymer_grdp_to_txt.py polymer_resources.grdp > /tmp/list.txt
+    $ vim /tmp/list.txt
+    $ txt_to_polymer_grdp.py /tmp/list.txt > polymer_resources.grdp
+-->
+<grit-part>
+%s
+  <structure name="IDR_POLYMER_WEB_ANIMATIONS_JS_WEB_ANIMATIONS_NEXT_LITE_MIN_JS"
+             file="../../../third_party/web-animations-js/sources/web-animations-next-lite.min.js"
+             type="chrome_html" />
+  <structure name="IDR_POLYMER_WEB_ANIMATIONS_JS_WEB_ANIMATIONS_NEXT_LITE_MIN_JS_MAP"
+             file="../../../third_party/web-animations-js/sources/web-animations-next-lite.min.js.map"
+             type="chrome_html" />
+</grit-part>
+"""
+
+
+DEFINITION_TEMPLATE = \
+"""  <structure name="%s"
+             file="../../../third_party/polymer/components-chromium/%s"
+             type="chrome_html" />"""
+
+
+def PathToGritId(path):
+  table = string.maketrans(string.lowercase + '/.-', string.uppercase + '___')
+  return 'IDR_POLYMER_' + path.translate(table)
+
+
+def main(argv):
+  with open(argv[1]) as f:
+    paths = [p.strip() for p in f if p.strip()]

[Dan Beam, 2015/03/17 16:37:53]

what is this code doing?  filtering out empty lines?

  filter(None, f.splitlines())

seems slightly easier to understand

[dzhioev (left Google), 2015/03/17 18:26:46]

Not only empty, but also whitespace-only lines. In addition it strips the lines,
in case if somebody left trailing spaces.

The meaning of None param in filter() is not obvious to me.
Furthermore, Guido doesn't like filter() (
http://www.artima.com/weblogs/viewpost.jsp?thread=98196 ).

Let's end up with [p.strip() for p in f if not p.isspace()].

+  lines = []
+  for path in sorted(paths, key=PathToGritId):
+    lines.append(DEFINITION_TEMPLATE % (PathToGritId(path), path))
+  print FILE_TEMPLATE % '\n'.join(lines)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))