Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.
BUG=N/A R=andrew@webrtc.org, wu@webrtc.org Review URL: https://webrtc-codereview.appspot.com/12199004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
henrike@webrtc.org
296
webrtc/base/json.cc
Normal file
296
webrtc/base/json.cc
Normal file
@ -0,0 +1,296 @@
|
||||
/*
|
||||
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
|
||||
*
|
||||
* Use of this source code is governed by a BSD-style license
|
||||
* that can be found in the LICENSE file in the root of the source
|
||||
* tree. An additional intellectual property rights grant can be found
|
||||
* in the file PATENTS. All contributing project authors may
|
||||
* be found in the AUTHORS file in the root of the source tree.
|
||||
*/
|
||||
|
||||
#include "webrtc/base/json.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <limits.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <sstream>
|
||||
|
||||
bool GetStringFromJson(const Json::Value& in, std::string* out) {
|
||||
if (!in.isString()) {
|
||||
std::ostringstream s;
|
||||
if (in.isBool()) {
|
||||
s << std::boolalpha << in.asBool();
|
||||
} else if (in.isInt()) {
|
||||
s << in.asInt();
|
||||
} else if (in.isUInt()) {
|
||||
s << in.asUInt();
|
||||
} else if (in.isDouble()) {
|
||||
s << in.asDouble();
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
*out = s.str();
|
||||
} else {
|
||||
*out = in.asString();
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool GetIntFromJson(const Json::Value& in, int* out) {
|
||||
bool ret;
|
||||
if (!in.isString()) {
|
||||
ret = in.isConvertibleTo(Json::intValue);
|
||||
if (ret) {
|
||||
*out = in.asInt();
|
||||
}
|
||||
} else {
|
||||
long val; // NOLINT
|
||||
const char* c_str = in.asCString();
|
||||
char* end_ptr;
|
||||
errno = 0;
|
||||
val = strtol(c_str, &end_ptr, 10); // NOLINT
|
||||
ret = (end_ptr != c_str && *end_ptr == '\0' && !errno &&
|
||||
val >= INT_MIN && val <= INT_MAX);
|
||||
*out = val;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool GetUIntFromJson(const Json::Value& in, unsigned int* out) {
|
||||
bool ret;
|
||||
if (!in.isString()) {
|
||||
ret = in.isConvertibleTo(Json::uintValue);
|
||||
if (ret) {
|
||||
*out = in.asUInt();
|
||||
}
|
||||
} else {
|
||||
unsigned long val; // NOLINT
|
||||
const char* c_str = in.asCString();
|
||||
char* end_ptr;
|
||||
errno = 0;
|
||||
val = strtoul(c_str, &end_ptr, 10); // NOLINT
|
||||
ret = (end_ptr != c_str && *end_ptr == '\0' && !errno &&
|
||||
val <= UINT_MAX);
|
||||
*out = val;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool GetBoolFromJson(const Json::Value& in, bool* out) {
|
||||
bool ret;
|
||||
if (!in.isString()) {
|
||||
ret = in.isConvertibleTo(Json::booleanValue);
|
||||
if (ret) {
|
||||
*out = in.asBool();
|
||||
}
|
||||
} else {
|
||||
if (in.asString() == "true") {
|
||||
*out = true;
|
||||
ret = true;
|
||||
} else if (in.asString() == "false") {
|
||||
*out = false;
|
||||
ret = true;
|
||||
} else {
|
||||
ret = false;
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool GetDoubleFromJson(const Json::Value& in, double* out) {
|
||||
bool ret;
|
||||
if (!in.isString()) {
|
||||
ret = in.isConvertibleTo(Json::realValue);
|
||||
if (ret) {
|
||||
*out = in.asDouble();
|
||||
}
|
||||
} else {
|
||||
double val;
|
||||
const char* c_str = in.asCString();
|
||||
char* end_ptr;
|
||||
errno = 0;
|
||||
val = strtod(c_str, &end_ptr);
|
||||
ret = (end_ptr != c_str && *end_ptr == '\0' && !errno);
|
||||
*out = val;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
namespace {
|
||||
template<typename T>
|
||||
bool JsonArrayToVector(const Json::Value& value,
|
||||
bool (*getter)(const Json::Value& in, T* out),
|
||||
std::vector<T> *vec) {
|
||||
vec->clear();
|
||||
if (!value.isArray()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
for (Json::Value::ArrayIndex i = 0; i < value.size(); ++i) {
|
||||
T val;
|
||||
if (!getter(value[i], &val)) {
|
||||
return false;
|
||||
}
|
||||
vec->push_back(val);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
// Trivial getter helper
|
||||
bool GetValueFromJson(const Json::Value& in, Json::Value* out) {
|
||||
*out = in;
|
||||
return true;
|
||||
}
|
||||
} // unnamed namespace
|
||||
|
||||
bool JsonArrayToValueVector(const Json::Value& in,
|
||||
std::vector<Json::Value>* out) {
|
||||
return JsonArrayToVector(in, GetValueFromJson, out);
|
||||
}
|
||||
|
||||
bool JsonArrayToIntVector(const Json::Value& in,
|
||||
std::vector<int>* out) {
|
||||
return JsonArrayToVector(in, GetIntFromJson, out);
|
||||
}
|
||||
|
||||
bool JsonArrayToUIntVector(const Json::Value& in,
|
||||
std::vector<unsigned int>* out) {
|
||||
return JsonArrayToVector(in, GetUIntFromJson, out);
|
||||
}
|
||||
|
||||
bool JsonArrayToStringVector(const Json::Value& in,
|
||||
std::vector<std::string>* out) {
|
||||
return JsonArrayToVector(in, GetStringFromJson, out);
|
||||
}
|
||||
|
||||
bool JsonArrayToBoolVector(const Json::Value& in,
|
||||
std::vector<bool>* out) {
|
||||
return JsonArrayToVector(in, GetBoolFromJson, out);
|
||||
}
|
||||
|
||||
bool JsonArrayToDoubleVector(const Json::Value& in,
|
||||
std::vector<double>* out) {
|
||||
return JsonArrayToVector(in, GetDoubleFromJson, out);
|
||||
}
|
||||
|
||||
namespace {
|
||||
template<typename T>
|
||||
Json::Value VectorToJsonArray(const std::vector<T>& vec) {
|
||||
Json::Value result(Json::arrayValue);
|
||||
for (size_t i = 0; i < vec.size(); ++i) {
|
||||
result.append(Json::Value(vec[i]));
|
||||
}
|
||||
return result;
|
||||
}
|
||||
} // unnamed namespace
|
||||
|
||||
Json::Value ValueVectorToJsonArray(const std::vector<Json::Value>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
Json::Value IntVectorToJsonArray(const std::vector<int>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
Json::Value UIntVectorToJsonArray(const std::vector<unsigned int>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
Json::Value StringVectorToJsonArray(const std::vector<std::string>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
Json::Value BoolVectorToJsonArray(const std::vector<bool>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
Json::Value DoubleVectorToJsonArray(const std::vector<double>& in) {
|
||||
return VectorToJsonArray(in);
|
||||
}
|
||||
|
||||
bool GetValueFromJsonArray(const Json::Value& in, size_t n,
|
||||
Json::Value* out) {
|
||||
if (!in.isArray() || !in.isValidIndex(static_cast<int>(n))) {
|
||||
return false;
|
||||
}
|
||||
|
||||
*out = in[static_cast<Json::Value::ArrayIndex>(n)];
|
||||
return true;
|
||||
}
|
||||
|
||||
bool GetIntFromJsonArray(const Json::Value& in, size_t n,
|
||||
int* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonArray(in, n, &x) && GetIntFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetUIntFromJsonArray(const Json::Value& in, size_t n,
|
||||
unsigned int* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonArray(in, n, &x) && GetUIntFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetStringFromJsonArray(const Json::Value& in, size_t n,
|
||||
std::string* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonArray(in, n, &x) && GetStringFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetBoolFromJsonArray(const Json::Value& in, size_t n,
|
||||
bool* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonArray(in, n, &x) && GetBoolFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetDoubleFromJsonArray(const Json::Value& in, size_t n,
|
||||
double* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonArray(in, n, &x) && GetDoubleFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetValueFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
Json::Value* out) {
|
||||
if (!in.isObject() || !in.isMember(k)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
*out = in[k];
|
||||
return true;
|
||||
}
|
||||
|
||||
bool GetIntFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
int* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonObject(in, k, &x) && GetIntFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetUIntFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
unsigned int* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonObject(in, k, &x) && GetUIntFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetStringFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
std::string* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonObject(in, k, &x) && GetStringFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetBoolFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
bool* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonObject(in, k, &x) && GetBoolFromJson(x, out);
|
||||
}
|
||||
|
||||
bool GetDoubleFromJsonObject(const Json::Value& in, const std::string& k,
|
||||
double* out) {
|
||||
Json::Value x;
|
||||
return GetValueFromJsonObject(in, k, &x) && GetDoubleFromJson(x, out);
|
||||
}
|
||||
|
||||
std::string JsonValueToString(const Json::Value& json) {
|
||||
Json::FastWriter w;
|
||||
std::string value = w.write(json);
|
||||
return value.substr(0, value.size() - 1); // trim trailing newline
|
||||
}
|
||||
Reference in New Issue
Block a user