1 /* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_BASE_JSON_H_ 12 #define WEBRTC_BASE_JSON_H_ 13 14 #include <string> 15 #include <vector> 16 17 #if !defined(WEBRTC_EXTERNAL_JSON) 18 #include "json/json.h" 19 #else 20 #include "third_party/jsoncpp/json.h" 21 #endif 22 23 namespace rtc { 24 25 /////////////////////////////////////////////////////////////////////////////// 26 // JSON Helpers 27 /////////////////////////////////////////////////////////////////////////////// 28 29 // Robust conversion operators, better than the ones in JsonCpp. 30 bool GetIntFromJson(const Json::Value& in, int* out); 31 bool GetUIntFromJson(const Json::Value& in, unsigned int* out); 32 bool GetStringFromJson(const Json::Value& in, std::string* out); 33 bool GetBoolFromJson(const Json::Value& in, bool* out); 34 bool GetDoubleFromJson(const Json::Value& in, double* out); 35 36 // Pull values out of a JSON array. 37 bool GetValueFromJsonArray(const Json::Value& in, size_t n, 38 Json::Value* out); 39 bool GetIntFromJsonArray(const Json::Value& in, size_t n, 40 int* out); 41 bool GetUIntFromJsonArray(const Json::Value& in, size_t n, 42 unsigned int* out); 43 bool GetStringFromJsonArray(const Json::Value& in, size_t n, 44 std::string* out); 45 bool GetBoolFromJsonArray(const Json::Value& in, size_t n, 46 bool* out); 47 bool GetDoubleFromJsonArray(const Json::Value& in, size_t n, 48 double* out); 49 50 // Convert json arrays to std::vector 51 bool JsonArrayToValueVector(const Json::Value& in, 52 std::vector<Json::Value>* out); 53 bool JsonArrayToIntVector(const Json::Value& in, 54 std::vector<int>* out); 55 bool JsonArrayToUIntVector(const Json::Value& in, 56 std::vector<unsigned int>* out); 57 bool JsonArrayToStringVector(const Json::Value& in, 58 std::vector<std::string>* out); 59 bool JsonArrayToBoolVector(const Json::Value& in, 60 std::vector<bool>* out); 61 bool JsonArrayToDoubleVector(const Json::Value& in, 62 std::vector<double>* out); 63 64 // Convert std::vector to json array 65 Json::Value ValueVectorToJsonArray(const std::vector<Json::Value>& in); 66 Json::Value IntVectorToJsonArray(const std::vector<int>& in); 67 Json::Value UIntVectorToJsonArray(const std::vector<unsigned int>& in); 68 Json::Value StringVectorToJsonArray(const std::vector<std::string>& in); 69 Json::Value BoolVectorToJsonArray(const std::vector<bool>& in); 70 Json::Value DoubleVectorToJsonArray(const std::vector<double>& in); 71 72 // Pull values out of a JSON object. 73 bool GetValueFromJsonObject(const Json::Value& in, const std::string& k, 74 Json::Value* out); 75 bool GetIntFromJsonObject(const Json::Value& in, const std::string& k, 76 int* out); 77 bool GetUIntFromJsonObject(const Json::Value& in, const std::string& k, 78 unsigned int* out); 79 bool GetStringFromJsonObject(const Json::Value& in, const std::string& k, 80 std::string* out); 81 bool GetBoolFromJsonObject(const Json::Value& in, const std::string& k, 82 bool* out); 83 bool GetDoubleFromJsonObject(const Json::Value& in, const std::string& k, 84 double* out); 85 86 // Writes out a Json value as a string. 87 std::string JsonValueToString(const Json::Value& json); 88 89 } // namespace rtc 90 91 #endif // WEBRTC_BASE_JSON_H_ 92