1 /* 2 * Copyright (c) 2023 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 16 #ifndef JSON_BUILDER_H 17 #define JSON_BUILDER_H 18 19 #include <string> 20 #include <vector> 21 22 namespace OHOS::UpdateEngine { 23 class JsonBuilder { 24 public: Append(const std::string & qualifier)25 JsonBuilder &Append(const std::string &qualifier) 26 { 27 builder_.append(qualifier); 28 return *this; 29 } 30 Append(const std::string & key,const uint32_t value)31 JsonBuilder &Append(const std::string &key, const uint32_t value) 32 { 33 return AppendNum(key, std::to_string(value)); 34 } 35 Append(const std::string & key,const int32_t value)36 JsonBuilder &Append(const std::string &key, const int32_t value) 37 { 38 return AppendNum(key, std::to_string(value)); 39 } 40 Append(const std::string & key,const bool value)41 JsonBuilder &Append(const std::string &key, const bool value) 42 { 43 const std::string valueString = value ? "true" : "false"; 44 return AppendNum(key, valueString); 45 } 46 Append(const std::string & key,const int64_t value)47 JsonBuilder &Append(const std::string &key, const int64_t value) 48 { 49 return AppendNum(key, std::to_string(value)); 50 } 51 52 JsonBuilder &Append(const std::string &key, const std::string &value, const bool isJsonString = false) 53 { 54 AppendComma(); 55 if (isJsonString) { 56 builder_.append("\"").append(key).append("\"").append(":").append(value); 57 } else { 58 builder_.append("\"").append(key).append("\"").append(":").append("\"").append(value).append("\""); 59 } 60 return *this; 61 } 62 Append(const std::string & key,const JsonBuilder & jsonBuilder)63 JsonBuilder &Append(const std::string &key, const JsonBuilder &jsonBuilder) 64 { 65 AppendComma(); 66 builder_.append("\"").append(key).append("\"").append(":").append(jsonBuilder.ToJson()); 67 return *this; 68 } 69 Append(const std::string & key,const std::vector<JsonBuilder> & valueList)70 JsonBuilder &Append(const std::string &key, const std::vector<JsonBuilder> &valueList) 71 { 72 if (!valueList.empty()) { 73 JsonBuilder jsonArray; 74 jsonArray.Append("["); 75 for (size_t i = 0; i < valueList.size(); i++) { 76 jsonArray.Append(valueList[i].ToJson()); 77 if (i != valueList.size() - 1) { 78 jsonArray.Append(","); 79 } 80 } 81 jsonArray.Append("]"); 82 83 Append(key, jsonArray); 84 } 85 return *this; 86 } 87 ToJson()88 std::string ToJson() const 89 { 90 return builder_; 91 } 92 93 private: AppendNum(const std::string & key,const std::string & value)94 JsonBuilder &AppendNum(const std::string &key, const std::string &value) 95 { 96 AppendComma(); 97 builder_.append("\"").append(key).append("\"").append(":").append(value); 98 return *this; 99 } 100 AppendComma()101 void AppendComma() 102 { 103 if (isFirstItem_) { 104 isFirstItem_ = false; 105 } else { 106 builder_.append(","); 107 } 108 } 109 110 private: 111 std::string builder_; 112 bool isFirstItem_ = true; 113 }; 114 } // namespace OHOS::UpdateEngine 115 #endif // JSON_BUILDER_H