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@ -0,0 +1,128 @@
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||||
// Tencent is pleased to support the open source community by making RapidJSON available.
|
||||
//
|
||||
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
|
||||
//
|
||||
// Licensed under the MIT License (the "License"); you may not use this file except
|
||||
// in compliance with the License. You may obtain a copy of the License at
|
||||
//
|
||||
// http://opensource.org/licenses/MIT
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software distributed
|
||||
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
||||
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
|
||||
// specific language governing permissions and limitations under the License.
|
||||
|
||||
#ifndef RAPIDJSON_ISTREAMWRAPPER_H_
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||||
#define RAPIDJSON_ISTREAMWRAPPER_H_
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||||
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||||
#include "stream.h"
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||||
#include <iosfwd>
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||||
#include <ios>
|
||||
|
||||
#ifdef __clang__
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||||
RAPIDJSON_DIAG_PUSH
|
||||
RAPIDJSON_DIAG_OFF(padded)
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||||
#elif defined(_MSC_VER)
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||||
RAPIDJSON_DIAG_PUSH
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||||
RAPIDJSON_DIAG_OFF(4351) // new behavior: elements of array 'array' will be default initialized
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||||
#endif
|
||||
|
||||
RAPIDJSON_NAMESPACE_BEGIN
|
||||
|
||||
//! Wrapper of \c std::basic_istream into RapidJSON's Stream concept.
|
||||
/*!
|
||||
The classes can be wrapped including but not limited to:
|
||||
|
||||
- \c std::istringstream
|
||||
- \c std::stringstream
|
||||
- \c std::wistringstream
|
||||
- \c std::wstringstream
|
||||
- \c std::ifstream
|
||||
- \c std::fstream
|
||||
- \c std::wifstream
|
||||
- \c std::wfstream
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||||
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||||
\tparam StreamType Class derived from \c std::basic_istream.
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||||
*/
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||||
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||||
template <typename StreamType>
|
||||
class BasicIStreamWrapper {
|
||||
public:
|
||||
typedef typename StreamType::char_type Ch;
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||||
|
||||
//! Constructor.
|
||||
/*!
|
||||
\param stream stream opened for read.
|
||||
*/
|
||||
BasicIStreamWrapper(StreamType &stream) : stream_(stream), buffer_(peekBuffer_), bufferSize_(4), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) {
|
||||
Read();
|
||||
}
|
||||
|
||||
//! Constructor.
|
||||
/*!
|
||||
\param stream stream opened for read.
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||||
\param buffer user-supplied buffer.
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||||
\param bufferSize size of buffer in bytes. Must >=4 bytes.
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||||
*/
|
||||
BasicIStreamWrapper(StreamType &stream, char* buffer, size_t bufferSize) : stream_(stream), buffer_(buffer), bufferSize_(bufferSize), bufferLast_(0), current_(buffer_), readCount_(0), count_(0), eof_(false) {
|
||||
RAPIDJSON_ASSERT(bufferSize >= 4);
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||||
Read();
|
||||
}
|
||||
|
||||
Ch Peek() const { return *current_; }
|
||||
Ch Take() { Ch c = *current_; Read(); return c; }
|
||||
size_t Tell() const { return count_ + static_cast<size_t>(current_ - buffer_); }
|
||||
|
||||
// Not implemented
|
||||
void Put(Ch) { RAPIDJSON_ASSERT(false); }
|
||||
void Flush() { RAPIDJSON_ASSERT(false); }
|
||||
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
|
||||
size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }
|
||||
|
||||
// For encoding detection only.
|
||||
const Ch* Peek4() const {
|
||||
return (current_ + 4 - !eof_ <= bufferLast_) ? current_ : 0;
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||||
}
|
||||
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||||
private:
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||||
BasicIStreamWrapper();
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||||
BasicIStreamWrapper(const BasicIStreamWrapper&);
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||||
BasicIStreamWrapper& operator=(const BasicIStreamWrapper&);
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||||
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||||
void Read() {
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||||
if (current_ < bufferLast_)
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||||
++current_;
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||||
else if (!eof_) {
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count_ += readCount_;
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||||
readCount_ = bufferSize_;
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||||
bufferLast_ = buffer_ + readCount_ - 1;
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||||
current_ = buffer_;
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||||
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||||
if (!stream_.read(buffer_, static_cast<std::streamsize>(bufferSize_))) {
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||||
readCount_ = static_cast<size_t>(stream_.gcount());
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||||
*(bufferLast_ = buffer_ + readCount_) = '\0';
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||||
eof_ = true;
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||||
}
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||||
}
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||||
}
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||||
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||||
StreamType &stream_;
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||||
Ch peekBuffer_[4], *buffer_;
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||||
size_t bufferSize_;
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||||
Ch *bufferLast_;
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||||
Ch *current_;
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||||
size_t readCount_;
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||||
size_t count_; //!< Number of characters read
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||||
bool eof_;
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||||
};
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||||
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||||
typedef BasicIStreamWrapper<std::istream> IStreamWrapper;
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typedef BasicIStreamWrapper<std::wistream> WIStreamWrapper;
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||||
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||||
#if defined(__clang__) || defined(_MSC_VER)
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RAPIDJSON_DIAG_POP
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||||
#endif
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||||
|
||||
RAPIDJSON_NAMESPACE_END
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||||
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||||
#endif // RAPIDJSON_ISTREAMWRAPPER_H_
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||||
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#include <iostream>
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||||
#include <string>
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#include <curl/curl.h>
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||||
#include <rapidjson/document.h>
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||||
#include <rapidjson/istreamwrapper.h>
|
||||
|
||||
// 定义回调函数获取API响应内容
|
||||
size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* response) {
|
||||
size_t total_size = size * nmemb;
|
||||
response->append((char*)contents, total_size);
|
||||
return total_size;
|
||||
}
|
||||
|
||||
// 获取地理位置信息
|
||||
std::string getPositionInfo(double latitude, double longitude) {
|
||||
// 构建请求URL
|
||||
std::string url = "http://api.map.baidu.com/reverse_geocoding/v3/?ak=YOUR_BAIDU_MAP_API_KEY&output=json&coordtype=wgs84ll&location="
|
||||
+ std::to_string(latitude) + ","
|
||||
+ std::to_string(longitude);
|
||||
|
||||
// 初始化CURL
|
||||
CURL* curl = curl_easy_init();
|
||||
if (curl) {
|
||||
std::string response;
|
||||
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
|
||||
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
|
||||
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
|
||||
|
||||
// 发送请求
|
||||
CURLcode res = curl_easy_perform(curl);
|
||||
if (res == CURLE_OK) {
|
||||
// 解析JSON数据
|
||||
rapidjson::Document document;
|
||||
rapidjson::IStreamWrapper stream(response.c_str());
|
||||
document.ParseStream(stream);
|
||||
|
||||
if (!document.HasParseError() && document.HasMember("result")) {
|
||||
const rapidjson::Value& result = document["result"];
|
||||
if (result.IsObject() && result.HasMember("addressComponent")) {
|
||||
const rapidjson::Value& addressComponent = result["addressComponent"];
|
||||
if (addressComponent.IsObject() && addressComponent.HasMember("city")) {
|
||||
const rapidjson::Value& city = addressComponent["city"];
|
||||
if (city.IsString()) {
|
||||
return city.GetString();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 清理CURL资源
|
||||
curl_easy_cleanup(curl);
|
||||
}
|
||||
|
||||
return "";
|
||||
}
|
||||
|
||||
int main() {
|
||||
double latitude, longitude;
|
||||
std::cout << "请输入经纬度坐标（用空格分隔）：";
|
||||
std::cin >> latitude >> longitude;
|
||||
|
||||
std::string cityName = getPositionInfo(latitude, longitude);
|
||||
if (!cityName.empty()) {
|
||||
std::cout << "该坐标所属市区名称：" << cityName << std::endl;
|
||||
}
|
||||
else {
|
||||
std::cout << "无法获取该坐标所属市区名称。" << std::endl;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
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<SatelliteDlls />
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D:\visualstudio\fire\fire\fire.cpp;D:\visualstudio\fire\fire\x64\Debug\fire.obj
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PlatformToolSet=v143:VCToolArchitecture=Native64Bit:VCToolsVersion=14.36.32532:TargetPlatformVersion=10.0.22000.0:
|
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Debug|x64|D:\visualstudio\fire\|
|
||||
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Loading…
Reference in new issue