Runtime C++ Download [2021] 🏆 💫

# Install libcurl (Ubuntu/Debian) sudo apt-get install libcurl4-openssl-dev mkdir build && cd build cmake .. && make Run ./downloader

private: static size_t writeCallback(void* contents, size_t size, size_t nmemb, void* userp); static int progressCallback(void* userp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow); struct DownloadContext std::ofstream file; size_t downloaded_bytes = 0; size_t total_bytes = 0; ProgressCallback progress_cb; std::string output_path; bool resume_mode = false; ; std::unique_ptr<DownloadContext> m_context; std::thread m_downloadThread; std::atomic<bool> m_activefalse; std::atomic<bool> m_cancelfalse; std::string m_lastError; CURL* m_curl; ; runtime c++ download

DownloadManager::~DownloadManager() cancel(); if (m_downloadThread.joinable()) m_downloadThread.join(); if (m_curl) curl_easy_cleanup(m_curl); curl_global_cleanup(); static int progressCallback(void* userp

void DownloadManager::cancel() m_cancel = true; if (m_downloadThread.joinable()) m_downloadThread.join(); struct DownloadContext std::ofstream file

void DownloadManager::downloadAsync(const DownloadOptions& options, ProgressCallback progress, CompleteCallback complete) if (m_active) if (complete) complete(false, "Download already in progress"); return; m_active = true; m_downloadThread = std::thread([this, options, progress, complete]() bool result = downloadSync(options, progress); m_active = false; if (complete) complete(result, m_lastError); );