Initial checkin of gRPC to third_party/

third_party/grpc/src/proto/gen_build_yaml.py

-# Copyright (C) 2010 Google Inc. All rights reserved.
+#!/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.
 
+
+"""Generates the appropriate build.json data for all the proto files."""
+import yaml
+import collections
+import os
+import re
 import sys
 
-from webkitpy.common.system.executive import ScriptError
-from webkitpy.tool.steps.options import Options
+def update_deps(key, proto_filename, deps, is_trans, visited):
+  if not proto_filename in visited:
+    visited.append(proto_filename)
+    with open(proto_filename) as inp:
+      for line in inp:
+        imp = re.search(r'import "([^"]*)"', line)
+        if not imp: continue
+        imp_proto = imp.group(1)
+        if key not in deps: deps[key] = []
+        deps[key].append(imp_proto[:-6])
+        if is_trans:
+          update_deps(key, imp_proto, deps, is_trans, visited)
 
+def main():
+  proto_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
+  os.chdir(os.path.join(proto_dir, '../..'))
 
-class AbstractStep(object):
+  deps = {}
+  deps_trans = {}
+  for root, dirs, files in os.walk('src/proto'):
+    for f in files:
+      if f[-6:] != '.proto': continue
+      look_at = os.path.join(root, f)
+      deps_for = look_at[:-6]
+      update_deps(deps_for, look_at, deps, False, [])      # First level deps
+      update_deps(deps_for, look_at, deps_trans, True, []) # Transitive deps
 
-    def __init__(self, tool, options):
-        self._tool = tool
-        self._options = options
+  json = {
+    'proto_deps': deps,
+    'proto_transitive_deps': deps_trans
+  }
 
-    def _exit(self, code):
-        sys.exit(code)
+  print yaml.dump(json)
 
-    @classmethod
-    def options(cls):
-        return [
-            # We need this option here because cached_lookup uses it.  :(
-            Options.git_commit,
-        ]
-
-    def run(self, state):
-        raise NotImplementedError, "subclasses must implement"
+if __name__ == '__main__':
+  main()