1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef AAPT_FLAGS_H 18 #define AAPT_FLAGS_H 19 20 #include "util/Maybe.h" 21 #include "util/StringPiece.h" 22 23 #include <functional> 24 #include <ostream> 25 #include <string> 26 #include <vector> 27 28 namespace aapt { 29 30 class Flags { 31 public: 32 Flags& requiredFlag(const StringPiece& name, const StringPiece& description, 33 std::string* value); 34 Flags& requiredFlagList(const StringPiece& name, const StringPiece& description, 35 std::vector<std::string>* value); 36 Flags& optionalFlag(const StringPiece& name, const StringPiece& description, 37 Maybe<std::string>* value); 38 Flags& optionalFlagList(const StringPiece& name, const StringPiece& description, 39 std::vector<std::string>* value); 40 Flags& optionalSwitch(const StringPiece& name, const StringPiece& description, 41 bool* value); 42 43 void usage(const StringPiece& command, std::ostream* out); 44 45 bool parse(const StringPiece& command, const std::vector<StringPiece>& args, 46 std::ostream* outError); 47 48 const std::vector<std::string>& getArgs(); 49 50 private: 51 struct Flag { 52 std::string name; 53 std::string description; 54 std::function<bool(const StringPiece& value)> action; 55 bool required; 56 size_t numArgs; 57 58 bool parsed; 59 }; 60 61 std::vector<Flag> mFlags; 62 std::vector<std::string> mArgs; 63 }; 64 65 } // namespace aapt 66 67 #endif // AAPT_FLAGS_H 68
