1 /*
2  * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #ifndef HFP_HF_COMMAND_PARSER_H
16 #define HFP_HF_COMMAND_PARSER_H
17 
18 #include <cstdint>
19 #include <string>
20 #include <unordered_map>
21 
22 #include "base_def.h"
23 #include "hfp_hf_command_processor.h"
24 #include "hfp_hf_data_connection.h"
25 
26 namespace OHOS {
27 namespace bluetooth {
28 /**
29  * @brief Class for parse AT command from remote AG device.
30  */
31 class HfpHfCommandParser {
32 public:
33     /**
34      * @brief Get the HfpHfCommandParser instance.
35      *
36      * @return Returns HfpHfCommandParser instance.
37      */
38     static HfpHfCommandParser &GetInstance();
39 
40     /**
41      * @brief Read data from data link.
42      *
43      * @param dataConn Data connection.
44      * @param commandProcessor Command processor pointer.
45      */
46     void Read(HfpHfDataConnection &dataConn, HfpHfCommandProcessor &commandProcessor);
47 
48     /**
49      * @brief Parse data bufffer.
50      *
51      * @param dataConn Data connection.
52      * @param commandProcessor Command processor pointer.
53      * @param data Data buffer pointer.
54      * @param len Data buffer length.
55      */
56     void Parse(HfpHfDataConnection &dataConn, HfpHfCommandProcessor &commandProcessor,
57         std::vector<uint8_t> &data, size_t len);
58 
59 private:
60     inline static constexpr int AT_HEAD_SIZE = 2;
61     void ParseBody(HfpHfDataConnection &dataConn,
62         HfpHfCommandProcessor &commandProcessor, std::vector<uint8_t> &data, size_t &pos, const size_t len);
63     HfpHfCommandParser() = default;
64     ~HfpHfCommandParser() = default;
65     BT_DISALLOW_COPY_AND_ASSIGN(HfpHfCommandParser);
66 
67     std::unordered_map<std::string, HfpHfCommandProcessor::HfpHfAtHandler> &g_atCmdMap {
68         HfpHfCommandProcessor::GetAtCmdMap()
69     };
70 };
71 }  // namespace bluetooth
72 }  // namespace OHOS
73 #endif // HFP_HF_COMMAND_PARSER_H