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56 строки
1.5 KiB
C++
56 строки
1.5 KiB
C++
#define CURL_STATICLIB // Äëÿ ñòàòè÷åñêîé ëèíêîâêè
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#include <curl/curl.h>
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#include <sstream>
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#include "histogram.h"
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#include <iostream>
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static size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp) {
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size_t real_size = size * nmemb;
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std::stringstream* buffer = static_cast<std::stringstream*>(userp);
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buffer->write(static_cast<const char*>(contents), real_size);
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return real_size;
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}
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Input download(const std::string& url) {
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CURL* curl = curl_easy_init();
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std::stringstream buffer;
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if(!curl) {
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std::cerr << "Îøèáêà: íå óäàëîñü èíèöèàëèçèðîâàòü cURL" << std::endl;
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exit(EXIT_FAILURE);
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}
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curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
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CURLcode res = curl_easy_perform(curl);
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if(res != CURLE_OK) {
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std::cerr << "Îøèáêà cURL (" << res << "): "
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<< curl_easy_strerror(res) << std::endl;
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const char* url_info;
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if(curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url_info) == CURLE_OK) {
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std::cerr << "URL: " << url_info << std::endl;
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}
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curl_easy_cleanup(curl);
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exit(EXIT_FAILURE);
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}
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if(buffer.str().empty()) {
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std::cerr << "Îøèáêà: ïîëó÷åí ïóñòîé îòâåò îò ñåðâåðà" << std::endl;
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curl_easy_cleanup(curl);
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exit(EXIT_FAILURE);
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}
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curl_easy_cleanup(curl);
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return input_data(buffer, false);
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}
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