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/*
* Copyright (C) 2018 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.
*/
#ifndef AAPT_COMMAND_H
#define AAPT_COMMAND_H
#include <functional>
#include <ostream>
#include <string>
#include <unordered_set>
#include <vector>
#include "androidfw/StringPiece.h"
#include "util/Maybe.h"
namespace aapt {
class Command {
public:
explicit Command(const android::StringPiece& name) : name_(name.to_string()),
fullname_(name.to_string()) { }
explicit Command(const android::StringPiece& name, const android::StringPiece& short_name)
: name_(name.to_string()), short_name_(short_name.to_string()), fullname_(name.to_string()) {}
virtual ~Command() = default;
void AddRequiredFlag(const android::StringPiece& name, const android::StringPiece& description,
std::string* value);
void AddRequiredFlagList(const android::StringPiece& name, const android::StringPiece&
description, std::vector<std::string>* value);
void AddOptionalFlag(const android::StringPiece& name, const android::StringPiece& description,
Maybe<std::string>* value);
void AddOptionalFlagList(const android::StringPiece& name,
const android::StringPiece& description, std::vector<std::string>* value);
void AddOptionalFlagList(const android::StringPiece& name,
const android::StringPiece& description, std::unordered_set<std::string>* value);
void AddOptionalSwitch(const android::StringPiece& name, const android::StringPiece& description,
bool* value);
void AddOptionalSubcommand(std::unique_ptr<Command>&& subcommand, bool experimental = false);
void SetDescription(const android::StringPiece& name);
/** Prints the help menu of the command. */
void Usage(std::ostream* out);
/**
* Parses the command line arguments, sets the flag variable values, and runs the action of
* the command. If the arguments fail to parse to the command and its subcommands, then the action
* will not be run and the usage will be printed instead.
**/
int Execute(const std::vector<android::StringPiece>& args, std::ostream* outError);
/** The action to preform when the command is executed. */
virtual int Action(const std::vector<std::string>& args) = 0;
private:
struct Flag {
std::string name;
std::string description;
std::function<bool(const android::StringPiece& value)> action;
bool required;
size_t num_args;
bool parsed;
};
std::string description_;
std::string name_;
std::string short_name_;
std::string fullname_;
std::vector<Flag> flags_;
std::vector<std::unique_ptr<Command>> subcommands_;
std::vector<std::unique_ptr<Command>> experimental_subcommands_;
};
} // namespace aapt
#endif // AAPT_COMMAND_H
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