Initial checkin of gRPC to third_party/

third_party/grpc/tools/buildgen/build-cleaner.py

Index: third_party/grpc/tools/buildgen/build-cleaner.py
diff --git a/third_party/grpc/tools/buildgen/build-cleaner.py b/third_party/grpc/tools/buildgen/build-cleaner.py
new file mode 100755
index 0000000000000000000000000000000000000000..12054da238eeb992ad5b67a9b23a4d3f1ac39387
--- /dev/null
+++ b/third_party/grpc/tools/buildgen/build-cleaner.py
@@ -0,0 +1,101 @@
+#!/usr/bin/env python2.7
+# Copyright 2015-2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# produces cleaner build.yaml files
+
+import collections
+import os
+import sys
+import yaml
+
+TEST = (os.environ.get('TEST', 'false') == 'true')
+
+_TOP_LEVEL_KEYS = ['settings', 'proto_deps', 'filegroups', 'libs', 'targets', 'vspackages']
+_ELEM_KEYS = [
+    'name',
+    'gtest',
+    'cpu_cost',
+    'flaky',
+    'build',
+    'run',
+    'language',
+    'public_headers',
+    'headers',
+    'src',
+    'deps']
+
+def repr_ordered_dict(dumper, odict):
+  return dumper.represent_mapping(u'tag:yaml.org,2002:map', odict.items())
+
+yaml.add_representer(collections.OrderedDict, repr_ordered_dict)
+
+def rebuild_as_ordered_dict(indict, special_keys):
+  outdict = collections.OrderedDict()
+  for key in sorted(indict.keys()):
+    if '#' in key:
+      outdict[key] = indict[key]
+  for key in special_keys:
+    if key in indict:
+      outdict[key] = indict[key]
+  for key in sorted(indict.keys()):
+    if key in special_keys: continue
+    if '#' in key: continue
+    outdict[key] = indict[key]
+  return outdict
+
+def clean_elem(indict):
+  for name in ['public_headers', 'headers', 'src']:
+    if name not in indict: continue
+    inlist = indict[name]
+    protos = list(x for x in inlist if os.path.splitext(x)[1] == '.proto')
+    others = set(x for x in inlist if x not in protos)
+    indict[name] = protos + sorted(others)
+  return rebuild_as_ordered_dict(indict, _ELEM_KEYS)
+
+for filename in sys.argv[1:]:
+  with open(filename) as f:
+    js = yaml.load(f)
+  js = rebuild_as_ordered_dict(js, _TOP_LEVEL_KEYS)
+  for grp in ['filegroups', 'libs', 'targets']:
+    if grp not in js: continue
+    js[grp] = sorted([clean_elem(x) for x in js[grp]],
+                     key=lambda x: (x.get('language', '_'), x['name']))
+  output = yaml.dump(js, indent=2, width=80, default_flow_style=False)
+  # massage out trailing whitespace
+  lines = []
+  for line in output.splitlines():
+    lines.append(line.rstrip() + '\n')
+  output = ''.join(lines)
+  if TEST:
+    with open(filename) as f:
+      assert f.read() == output
+  else:
+    with open(filename, 'w') as f:
+      f.write(output)