curly/requester.cpp

//
// requester.cpp
// curly
//
// Created by Bob Polis at 2020-09-01
// Copyright (c) 2020 SwiftCoder. All rights reserved.
//

#include "requester.hpp"
#include <libsclogging.hpp>
#include <vector>
#include <cstring>
#include <stdexcept>

extern sc::logger logger;

size_t requester::write_data(char *buf, size_t sz, size_t nmemb, void *user_data) {
    size_t realsize = sz * nmemb;
    SCInfo(logger, "received ", realsize, " bytes");
    std::string* text {reinterpret_cast<std::string*>(user_data)};
    text->append(buf, realsize);
    return realsize;
}

requester::requester() {
    curl_global_init(CURL_GLOBAL_ALL);
    _h.reset(curl_easy_init());
    curl_easy_setopt(_h.get(), CURLOPT_WRITEFUNCTION, write_data);
}

requester::~requester() {
    curl_global_cleanup();
}

std::string requester::get(const std::string &url) {
    std::string text;
    curl_easy_setopt(_h.get(), CURLOPT_URL, url.c_str());
    curl_easy_setopt(_h.get(), CURLOPT_WRITEDATA, &text);
    auto success = curl_easy_perform(_h.get());
    if (success != CURLE_OK) throw std::runtime_error("could not get remote data");
    return text;
}