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      1 /*
      2  * Copyright (C) 2017 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 FRAMEWORK_NATIVE_CMDS_LSHAL_COMMAND_H_
     18 #define FRAMEWORK_NATIVE_CMDS_LSHAL_COMMAND_H_
     19 
     20 #include "utils.h"
     21 
     22 namespace android {
     23 namespace lshal {
     24 
     25 class Lshal;
     26 
     27 // Base class for all *Commands
     28 class Command {
     29 public:
     30     Command(Lshal& lshal) : mLshal(lshal) {}
     31     virtual ~Command() = default;
     32     // Expect optind to be set by Lshal::main and points to the next argument
     33     // to process.
     34     virtual Status main(const Arg &arg) = 0;
     35 
     36     virtual void usage() const = 0;
     37 
     38     // e.g. "list"
     39     virtual std::string getName() const = 0;
     40 
     41     // e.g. "list HALs"
     42     virtual std::string getSimpleDescription() const = 0;
     43 
     44 protected:
     45     Lshal& mLshal;
     46 };
     47 
     48 
     49 }  // namespace lshal
     50 }  // namespace android
     51 
     52 #endif  // FRAMEWORK_NATIVE_CMDS_LSHAL_LIST_COMMAND_H_
     53