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#!/usr/bin/env python2.7
# Copyright 2015 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Generates the appropriate build.json data for all the proto files."""
import yaml
import collections
import os
import re
import sys
def update_deps(key, proto_filename, deps, deps_external, 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)
# This indicates an external dependency, which we should handle
# differently and not traverse recursively
if imp_proto.startswith('google/'):
if key not in deps_external:
deps_external[key] = []
deps_external[key].append(imp_proto[:-6])
continue
if key not in deps: deps[key] = []
deps[key].append(imp_proto[:-6])
if is_trans:
update_deps(key, imp_proto, deps, deps_external, is_trans, visited)
def main():
proto_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
os.chdir(os.path.join(proto_dir, '../..'))
deps = {}
deps_trans = {}
deps_external = {}
deps_external_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]
# First level deps
update_deps(deps_for, look_at, deps, deps_external, False, [])
# Transitive deps
update_deps(deps_for, look_at, deps_trans, deps_external_trans, True, [])
json = {
'proto_deps': deps,
'proto_transitive_deps': deps_trans,
'proto_external_deps': deps_external,
'proto_transitive_external_deps': deps_external_trans
}
print yaml.dump(json)
if __name__ == '__main__':
main()
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