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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 <memory>
#include <optional>
#include <ostream>
#include <string>
#include <unordered_set>
#include <vector>
#include "androidfw/StringPiece.h"
namespace aapt {
class Command {
public:
explicit Command(const android::StringPiece& name)
: name_(name.to_string()), full_subcommand_name_(name.to_string()){};
explicit Command(const android::StringPiece& name, const android::StringPiece& short_name)
: name_(name.to_string()),
short_name_(short_name.to_string()),
full_subcommand_name_(name.to_string()){};
Command(Command&&) = default;
Command& operator=(Command&&) = default;
virtual ~Command() = default;
// Behavior flags used with the following functions that change how the command flags are parsed
// displayed.
enum : uint32_t {
// Indicates the arguments are file or folder paths. On Windows, paths that exceed the maximum
// path length will be converted to use the extended path prefix '//?/'. Without this
// conversion, files with long paths cannot be opened.
kPath = 1 << 0,
};
void AddRequiredFlag(const android::StringPiece& name, const android::StringPiece& description,
std::string* value, uint32_t flags = 0);
void AddRequiredFlagList(const android::StringPiece& name,
const android::StringPiece& description, std::vector<std::string>* value,
uint32_t flags = 0);
void AddOptionalFlag(const android::StringPiece& name, const android::StringPiece& description,
std::optional<std::string>* value, uint32_t flags = 0);
void AddOptionalFlagList(const android::StringPiece& name,
const android::StringPiece& description, std::vector<std::string>* value,
uint32_t flags = 0);
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 {
explicit Flag(const android::StringPiece& name, const android::StringPiece& description,
const bool is_required, const size_t num_args,
std::function<bool(const android::StringPiece& value)>&& action)
: name(name.to_string()), description(description.to_string()), is_required(is_required),
num_args(num_args), action(std::move(action)) {}
const std::string name;
const std::string description;
const bool is_required;
const size_t num_args;
const std::function<bool(const android::StringPiece& value)> action;
bool found = false;
};
std::string name_;
std::string short_name_;
std::string description_ = "";
std::string full_subcommand_name_;
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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