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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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.
#ifndef BAZEL_SRC_MAIN_CPP_OPTION_PROCESSOR_H_
#define BAZEL_SRC_MAIN_CPP_OPTION_PROCESSOR_H_
#include <list>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "src/main/cpp/startup_options.h"
#include "src/main/cpp/util/exit_code.h"
namespace blaze {
// This class is responsible for parsing the command line of the Blaze binary,
// parsing blazerc files, and putting together the command that should be sent
// to the server.
class OptionProcessor {
public:
OptionProcessor(std::unique_ptr<StartupOptions> default_startup_options);
virtual ~OptionProcessor();
// Parse a command line and the appropriate blazerc files. This should be
// invoked only once per OptionProcessor object.
blaze_exit_code::ExitCode ParseOptions(const std::vector<std::string>& args,
const std::string& workspace,
const std::string& cwd,
std::string* error);
blaze_exit_code::ExitCode ParseOptions(int argc, const char* argv[],
const std::string& workspace,
const std::string& cwd,
std::string* error);
// Get the Blaze command to be executed.
// Returns an empty string if no command was found on the command line.
const std::string& GetCommand() const;
// Gets the arguments to the command. This is put together from the default
// options specified in the blazerc file(s), the command line, and various
// bits and pieces of information about the environment the blaze binary is
// executed in.
void GetCommandArguments(std::vector<std::string>* result) const;
StartupOptions* GetParsedStartupOptions() const;
virtual blaze_exit_code::ExitCode FindUserBlazerc(
const char* cmdLineRcFile, const std::string& rc_basename,
const std::string& workspace, std::string* user_blazerc_file,
std::string* error);
private:
class RcOption {
public:
RcOption(int rcfile_index, const std::string& option);
const int rcfile_index() const { return rcfile_index_; }
const std::string& option() const { return option_; }
private:
int rcfile_index_;
std::string option_;
};
class RcFile {
public:
RcFile(const std::string& filename, int index);
blaze_exit_code::ExitCode Parse(
const std::string& workspace, std::vector<RcFile*>* rcfiles,
std::map<std::string, std::vector<RcOption> >* rcoptions,
std::string* error);
const std::string& Filename() const { return filename_; }
const int Index() const { return index_; }
private:
static blaze_exit_code::ExitCode Parse(
const std::string& workspace, const std::string& filename,
const int index, std::vector<RcFile*>* rcfiles,
std::map<std::string, std::vector<RcOption> >* rcoptions,
std::list<std::string>* import_stack, std::string* error);
std::string filename_;
int index_;
};
void AddRcfileArgsAndOptions(bool batch, const std::string& cwd);
blaze_exit_code::ExitCode ParseStartupOptions(std::string* error);
std::vector<RcFile*> blazercs_;
std::map<std::string, std::vector<RcOption> > rcoptions_;
std::vector<std::string> args_;
unsigned int startup_args_;
std::string command_;
std::vector<std::string> command_arguments_;
bool initialized_;
std::unique_ptr<StartupOptions> parsed_startup_options_;
};
} // namespace blaze
#endif // BAZEL_SRC_MAIN_CPP_OPTION_PROCESSOR_H_
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