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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// 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.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <google/protobuf/compiler/java/java_generator.h>
#include <google/protobuf/compiler/java/java_file.h>
#include <google/protobuf/compiler/java/java_helpers.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/stubs/strutil.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace java {
namespace {
// Parses a set of comma-delimited name/value pairs, e.g.:
// "foo=bar,baz,qux=corge"
// parses to the pairs:
// ("foo", "bar"), ("baz", ""), ("qux", "corge")
void ParseOptions(const string& text, vector<pair<string, string> >* output) {
vector<string> parts;
SplitStringUsing(text, ",", &parts);
for (int i = 0; i < parts.size(); i++) {
string::size_type equals_pos = parts[i].find_first_of('=');
pair<string, string> value;
if (equals_pos == string::npos) {
value.first = parts[i];
value.second = "";
} else {
value.first = parts[i].substr(0, equals_pos);
value.second = parts[i].substr(equals_pos + 1);
}
output->push_back(value);
}
}
} // namespace
JavaGenerator::JavaGenerator() {}
JavaGenerator::~JavaGenerator() {}
bool JavaGenerator::Generate(const FileDescriptor* file,
const string& parameter,
OutputDirectory* output_directory,
string* error) const {
vector<pair<string, string> > options;
ParseOptions(parameter, &options);
// -----------------------------------------------------------------
// parse generator options
// Name a file where we will write a list of generated file names, one
// per line.
string output_list_file;
for (int i = 0; i < options.size(); i++) {
if (options[i].first == "output_list_file") {
output_list_file = options[i].second;
} else {
*error = "Unknown generator option: " + options[i].first;
return false;
}
}
// -----------------------------------------------------------------
FileGenerator file_generator(file);
if (!file_generator.Validate(error)) {
return false;
}
string package_dir =
StringReplace(file_generator.java_package(), ".", "/", true);
if (!package_dir.empty()) package_dir += "/";
vector<string> all_files;
string java_filename = package_dir;
java_filename += file_generator.classname();
java_filename += ".java";
all_files.push_back(java_filename);
// Generate main java file.
scoped_ptr<io::ZeroCopyOutputStream> output(
output_directory->Open(java_filename));
io::Printer printer(output.get(), '$');
file_generator.Generate(&printer);
// Generate sibling files.
file_generator.GenerateSiblings(package_dir, output_directory, &all_files);
// Generate output list if requested.
if (!output_list_file.empty()) {
// Generate output list. This is just a simple text file placed in a
// deterministic location which lists the .java files being generated.
scoped_ptr<io::ZeroCopyOutputStream> srclist_raw_output(
output_directory->Open(output_list_file));
io::Printer srclist_printer(srclist_raw_output.get(), '$');
for (int i = 0; i < all_files.size(); i++) {
srclist_printer.Print("$filename$\n", "filename", all_files[i]);
}
}
return true;
}
} // namespace java
} // namespace compiler
} // namespace protobuf
} // namespace google
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