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| 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 #include "webrtc/base/json.h" | |
| 12 | |
| 13 #include <errno.h> | |
| 14 #include <limits.h> | |
| 15 #include <stdlib.h> | |
| 16 | |
| 17 #include <sstream> | |
| 18 | |
| 19 namespace rtc { | |
| 20 | |
| 21 bool GetStringFromJson(const Json::Value& in, std::string* out) { | |
| 22 if (!in.isString()) { | |
| 23 std::ostringstream s; | |
| 24 if (in.isBool()) { | |
| 25 s << std::boolalpha << in.asBool(); | |
| 26 } else if (in.isInt()) { | |
| 27 s << in.asInt(); | |
| 28 } else if (in.isUInt()) { | |
| 29 s << in.asUInt(); | |
| 30 } else if (in.isDouble()) { | |
| 31 s << in.asDouble(); | |
| 32 } else { | |
| 33 return false; | |
| 34 } | |
| 35 *out = s.str(); | |
| 36 } else { | |
| 37 *out = in.asString(); | |
| 38 } | |
| 39 return true; | |
| 40 } | |
| 41 | |
| 42 bool GetIntFromJson(const Json::Value& in, int* out) { | |
| 43 bool ret; | |
| 44 if (!in.isString()) { | |
| 45 ret = in.isConvertibleTo(Json::intValue); | |
| 46 if (ret) { | |
| 47 *out = in.asInt(); | |
| 48 } | |
| 49 } else { | |
| 50 long val; // NOLINT | |
| 51 const char* c_str = in.asCString(); | |
| 52 char* end_ptr; | |
| 53 errno = 0; | |
| 54 val = strtol(c_str, &end_ptr, 10); // NOLINT | |
| 55 ret = (end_ptr != c_str && *end_ptr == '\0' && !errno && | |
| 56 val >= INT_MIN && val <= INT_MAX); | |
| 57 *out = val; | |
| 58 } | |
| 59 return ret; | |
| 60 } | |
| 61 | |
| 62 bool GetUIntFromJson(const Json::Value& in, unsigned int* out) { | |
| 63 bool ret; | |
| 64 if (!in.isString()) { | |
| 65 ret = in.isConvertibleTo(Json::uintValue); | |
| 66 if (ret) { | |
| 67 *out = in.asUInt(); | |
| 68 } | |
| 69 } else { | |
| 70 unsigned long val; // NOLINT | |
| 71 const char* c_str = in.asCString(); | |
| 72 char* end_ptr; | |
| 73 errno = 0; | |
| 74 val = strtoul(c_str, &end_ptr, 10); // NOLINT | |
| 75 ret = (end_ptr != c_str && *end_ptr == '\0' && !errno && | |
| 76 val <= UINT_MAX); | |
| 77 *out = val; | |
| 78 } | |
| 79 return ret; | |
| 80 } | |
| 81 | |
| 82 bool GetBoolFromJson(const Json::Value& in, bool* out) { | |
| 83 bool ret; | |
| 84 if (!in.isString()) { | |
| 85 ret = in.isConvertibleTo(Json::booleanValue); | |
| 86 if (ret) { | |
| 87 *out = in.asBool(); | |
| 88 } | |
| 89 } else { | |
| 90 if (in.asString() == "true") { | |
| 91 *out = true; | |
| 92 ret = true; | |
| 93 } else if (in.asString() == "false") { | |
| 94 *out = false; | |
| 95 ret = true; | |
| 96 } else { | |
| 97 ret = false; | |
| 98 } | |
| 99 } | |
| 100 return ret; | |
| 101 } | |
| 102 | |
| 103 bool GetDoubleFromJson(const Json::Value& in, double* out) { | |
| 104 bool ret; | |
| 105 if (!in.isString()) { | |
| 106 ret = in.isConvertibleTo(Json::realValue); | |
| 107 if (ret) { | |
| 108 *out = in.asDouble(); | |
| 109 } | |
| 110 } else { | |
| 111 double val; | |
| 112 const char* c_str = in.asCString(); | |
| 113 char* end_ptr; | |
| 114 errno = 0; | |
| 115 val = strtod(c_str, &end_ptr); | |
| 116 ret = (end_ptr != c_str && *end_ptr == '\0' && !errno); | |
| 117 *out = val; | |
| 118 } | |
| 119 return ret; | |
| 120 } | |
| 121 | |
| 122 namespace { | |
| 123 template<typename T> | |
| 124 bool JsonArrayToVector(const Json::Value& value, | |
| 125 bool (*getter)(const Json::Value& in, T* out), | |
| 126 std::vector<T> *vec) { | |
| 127 vec->clear(); | |
| 128 if (!value.isArray()) { | |
| 129 return false; | |
| 130 } | |
| 131 | |
| 132 for (Json::Value::ArrayIndex i = 0; i < value.size(); ++i) { | |
| 133 T val; | |
| 134 if (!getter(value[i], &val)) { | |
| 135 return false; | |
| 136 } | |
| 137 vec->push_back(val); | |
| 138 } | |
| 139 | |
| 140 return true; | |
| 141 } | |
| 142 // Trivial getter helper | |
| 143 bool GetValueFromJson(const Json::Value& in, Json::Value* out) { | |
| 144 *out = in; | |
| 145 return true; | |
| 146 } | |
| 147 } // unnamed namespace | |
| 148 | |
| 149 bool JsonArrayToValueVector(const Json::Value& in, | |
| 150 std::vector<Json::Value>* out) { | |
| 151 return JsonArrayToVector(in, GetValueFromJson, out); | |
| 152 } | |
| 153 | |
| 154 bool JsonArrayToIntVector(const Json::Value& in, | |
| 155 std::vector<int>* out) { | |
| 156 return JsonArrayToVector(in, GetIntFromJson, out); | |
| 157 } | |
| 158 | |
| 159 bool JsonArrayToUIntVector(const Json::Value& in, | |
| 160 std::vector<unsigned int>* out) { | |
| 161 return JsonArrayToVector(in, GetUIntFromJson, out); | |
| 162 } | |
| 163 | |
| 164 bool JsonArrayToStringVector(const Json::Value& in, | |
| 165 std::vector<std::string>* out) { | |
| 166 return JsonArrayToVector(in, GetStringFromJson, out); | |
| 167 } | |
| 168 | |
| 169 bool JsonArrayToBoolVector(const Json::Value& in, | |
| 170 std::vector<bool>* out) { | |
| 171 return JsonArrayToVector(in, GetBoolFromJson, out); | |
| 172 } | |
| 173 | |
| 174 bool JsonArrayToDoubleVector(const Json::Value& in, | |
| 175 std::vector<double>* out) { | |
| 176 return JsonArrayToVector(in, GetDoubleFromJson, out); | |
| 177 } | |
| 178 | |
| 179 namespace { | |
| 180 template<typename T> | |
| 181 Json::Value VectorToJsonArray(const std::vector<T>& vec) { | |
| 182 Json::Value result(Json::arrayValue); | |
| 183 for (size_t i = 0; i < vec.size(); ++i) { | |
| 184 result.append(Json::Value(vec[i])); | |
| 185 } | |
| 186 return result; | |
| 187 } | |
| 188 } // unnamed namespace | |
| 189 | |
| 190 Json::Value ValueVectorToJsonArray(const std::vector<Json::Value>& in) { | |
| 191 return VectorToJsonArray(in); | |
| 192 } | |
| 193 | |
| 194 Json::Value IntVectorToJsonArray(const std::vector<int>& in) { | |
| 195 return VectorToJsonArray(in); | |
| 196 } | |
| 197 | |
| 198 Json::Value UIntVectorToJsonArray(const std::vector<unsigned int>& in) { | |
| 199 return VectorToJsonArray(in); | |
| 200 } | |
| 201 | |
| 202 Json::Value StringVectorToJsonArray(const std::vector<std::string>& in) { | |
| 203 return VectorToJsonArray(in); | |
| 204 } | |
| 205 | |
| 206 Json::Value BoolVectorToJsonArray(const std::vector<bool>& in) { | |
| 207 return VectorToJsonArray(in); | |
| 208 } | |
| 209 | |
| 210 Json::Value DoubleVectorToJsonArray(const std::vector<double>& in) { | |
| 211 return VectorToJsonArray(in); | |
| 212 } | |
| 213 | |
| 214 bool GetValueFromJsonArray(const Json::Value& in, size_t n, | |
| 215 Json::Value* out) { | |
| 216 if (!in.isArray() || !in.isValidIndex(static_cast<int>(n))) { | |
| 217 return false; | |
| 218 } | |
| 219 | |
| 220 *out = in[static_cast<Json::Value::ArrayIndex>(n)]; | |
| 221 return true; | |
| 222 } | |
| 223 | |
| 224 bool GetIntFromJsonArray(const Json::Value& in, size_t n, | |
| 225 int* out) { | |
| 226 Json::Value x; | |
| 227 return GetValueFromJsonArray(in, n, &x) && GetIntFromJson(x, out); | |
| 228 } | |
| 229 | |
| 230 bool GetUIntFromJsonArray(const Json::Value& in, size_t n, | |
| 231 unsigned int* out) { | |
| 232 Json::Value x; | |
| 233 return GetValueFromJsonArray(in, n, &x) && GetUIntFromJson(x, out); | |
| 234 } | |
| 235 | |
| 236 bool GetStringFromJsonArray(const Json::Value& in, size_t n, | |
| 237 std::string* out) { | |
| 238 Json::Value x; | |
| 239 return GetValueFromJsonArray(in, n, &x) && GetStringFromJson(x, out); | |
| 240 } | |
| 241 | |
| 242 bool GetBoolFromJsonArray(const Json::Value& in, size_t n, | |
| 243 bool* out) { | |
| 244 Json::Value x; | |
| 245 return GetValueFromJsonArray(in, n, &x) && GetBoolFromJson(x, out); | |
| 246 } | |
| 247 | |
| 248 bool GetDoubleFromJsonArray(const Json::Value& in, size_t n, | |
| 249 double* out) { | |
| 250 Json::Value x; | |
| 251 return GetValueFromJsonArray(in, n, &x) && GetDoubleFromJson(x, out); | |
| 252 } | |
| 253 | |
| 254 bool GetValueFromJsonObject(const Json::Value& in, const std::string& k, | |
| 255 Json::Value* out) { | |
| 256 if (!in.isObject() || !in.isMember(k)) { | |
| 257 return false; | |
| 258 } | |
| 259 | |
| 260 *out = in[k]; | |
| 261 return true; | |
| 262 } | |
| 263 | |
| 264 bool GetIntFromJsonObject(const Json::Value& in, const std::string& k, | |
| 265 int* out) { | |
| 266 Json::Value x; | |
| 267 return GetValueFromJsonObject(in, k, &x) && GetIntFromJson(x, out); | |
| 268 } | |
| 269 | |
| 270 bool GetUIntFromJsonObject(const Json::Value& in, const std::string& k, | |
| 271 unsigned int* out) { | |
| 272 Json::Value x; | |
| 273 return GetValueFromJsonObject(in, k, &x) && GetUIntFromJson(x, out); | |
| 274 } | |
| 275 | |
| 276 bool GetStringFromJsonObject(const Json::Value& in, const std::string& k, | |
| 277 std::string* out) { | |
| 278 Json::Value x; | |
| 279 return GetValueFromJsonObject(in, k, &x) && GetStringFromJson(x, out); | |
| 280 } | |
| 281 | |
| 282 bool GetBoolFromJsonObject(const Json::Value& in, const std::string& k, | |
| 283 bool* out) { | |
| 284 Json::Value x; | |
| 285 return GetValueFromJsonObject(in, k, &x) && GetBoolFromJson(x, out); | |
| 286 } | |
| 287 | |
| 288 bool GetDoubleFromJsonObject(const Json::Value& in, const std::string& k, | |
| 289 double* out) { | |
| 290 Json::Value x; | |
| 291 return GetValueFromJsonObject(in, k, &x) && GetDoubleFromJson(x, out); | |
| 292 } | |
| 293 | |
| 294 std::string JsonValueToString(const Json::Value& json) { | |
| 295 Json::FastWriter w; | |
| 296 std::string value = w.write(json); | |
| 297 return value.substr(0, value.size() - 1); // trim trailing newline | |
| 298 } | |
| 299 | |
| 300 } // namespace rtc | |
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Chromium Code Reviews
Issue 2877023002:
Move webrtc/{base => rtc_base} (Closed)
