Function download_string

src/pull/download_model.cpp:219–246

\brief Download content from URL to a string \param url the URL to download from \return the downloaded string

/// \param url the URL to download from
/// \return the downloaded string
std::string download_string(const std::string& url) {
    CURL* curl = curl_easy_init();
    if (!curl) {
        std::cerr << "Failed to initialize CURL" << std::endl;
        return "";
    }

    std::string response;
    
    curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data_to_string);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
    curl_easy_setopt(curl, CURLOPT_USERAGENT, "FastFlowLM/1.0");
    curl_easy_setopt(curl, CURLOPT_TIMEOUT, 60L); // 1 minute timeout

    CURLcode res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);

    if (res != CURLE_OK) {
        std::cerr << "CURL error: " << curl_easy_strerror(res) << std::endl;
        return "";
    }

    return response;
}

/// \brief Download multiple files with progress tracking
/// \param downloads the downloads