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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 "command.h"
#include <algorithm>
#include <map>
#include <string>
#include <vector>
#include <base/logging.h>
bool Command::NextArgumentOrError(const std::vector<std::string>& args, size_t* pi) {
if (*pi + 1 == args.size()) {
LOG(ERROR) << "No argument following " << args[*pi] << " option. Try `simpleperf help " << name_
<< "`";
return false;
}
++*pi;
return true;
}
void Command::ReportUnknownOption(const std::vector<std::string>& args, size_t i) {
LOG(ERROR) << "Unknown option for " << name_ << " command: '" << args[i]
<< "'. Try `simpleperf help " << name_ << "`";
}
typedef std::function<std::unique_ptr<Command>(void)> callback_t;
static std::map<std::string, callback_t>& CommandMap() {
// commands is used in the constructor of Command. Defining it as a static
// variable in a function makes sure it is initialized before use.
static std::map<std::string, callback_t> command_map;
return command_map;
}
void RegisterCommand(const std::string& cmd_name,
std::function<std::unique_ptr<Command>(void)> callback) {
CommandMap().insert(std::make_pair(cmd_name, callback));
}
void UnRegisterCommand(const std::string& cmd_name) {
CommandMap().erase(cmd_name);
}
std::unique_ptr<Command> CreateCommandInstance(const std::string& cmd_name) {
auto it = CommandMap().find(cmd_name);
return (it == CommandMap().end()) ? nullptr : (it->second)();
}
const std::vector<std::string> GetAllCommandNames() {
std::vector<std::string> names;
for (auto pair : CommandMap()) {
names.push_back(pair.first);
}
return names;
}
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