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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. 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.
*/
#include "cli/App.h"
#include <iostream>
#include <cassert>
namespace cli
{
App::App(const std::string &name) : _name{name}
{
// DO NOTHING
}
App &App::insert(const std::string &tag, std::unique_ptr<Command> &&command)
{
assert(_commands.find(tag) == _commands.end());
_commands[tag] = std::move(command);
return (*this);
}
int App::run(int argc, const char *const *argv) const
{
if (argc < 1)
{
std::cerr << "ERROR: COMMAND is not provided" << std::endl;
usage(std::cerr);
return 255;
}
const std::string command{argv[0]};
auto it = _commands.find(command);
if (it == _commands.end())
{
std::cerr << "ERROR: '" << command << "' is not a valid command" << std::endl;
usage(std::cerr);
return 255;
}
return it->second->run(argc - 1, argv + 1);
}
void App::usage(std::ostream &os) const
{
os << std::endl;
os << "USAGE: " << _name << " [COMMAND] ..." << std::endl;
os << std::endl;
os << "SUPPORTED COMMANDS:" << std::endl;
for (auto it = _commands.begin(); it != _commands.end(); ++it)
{
os << " " << it->first << std::endl;
}
}
} // namespace cli
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