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 SIMPLE_PERF_COMMAND_H_
18 #define SIMPLE_PERF_COMMAND_H_
19 
20 #include <functional>
21 #include <memory>
22 #include <string>
23 #include <vector>
24 
25 #include <android-base/macros.h>
26 
27 class Command {
28  public:
Command(const std::string & name,const std::string & short_help_string,const std::string & long_help_string)29   Command(const std::string& name, const std::string& short_help_string,
30           const std::string& long_help_string)
31       : name_(name), short_help_string_(short_help_string), long_help_string_(long_help_string) {
32   }
33 
~Command()34   virtual ~Command() {
35   }
36 
Name()37   const std::string& Name() const {
38     return name_;
39   }
40 
ShortHelpString()41   const std::string& ShortHelpString() const {
42     return short_help_string_;
43   }
44 
LongHelpString()45   const std::string LongHelpString() const {
46     return long_help_string_;
47   }
48 
49   virtual bool Run(const std::vector<std::string>& args) = 0;
50 
51  protected:
52   bool NextArgumentOrError(const std::vector<std::string>& args, size_t* pi);
53   void ReportUnknownOption(const std::vector<std::string>& args, size_t i);
54 
55  private:
56   const std::string name_;
57   const std::string short_help_string_;
58   const std::string long_help_string_;
59 
60   DISALLOW_COPY_AND_ASSIGN(Command);
61 };
62 
63 void RegisterCommand(const std::string& cmd_name,
64                      const std::function<std::unique_ptr<Command>(void)>& callback);
65 void UnRegisterCommand(const std::string& cmd_name);
66 std::unique_ptr<Command> CreateCommandInstance(const std::string& cmd_name);
67 const std::vector<std::string> GetAllCommandNames();
68 
69 #endif  // SIMPLE_PERF_COMMAND_H_
70