92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
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/*
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* Copyright (C) 2016 Max Kellermann <max@duempel.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CURL_MULTI_HXX
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#define CURL_MULTI_HXX
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#include <curl/curl.h>
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#include <utility>
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#include <stdexcept>
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#include <cstddef>
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/**
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* An OO wrapper for a "CURLM*" (a libCURL "multi" handle).
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*/
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class CurlMulti {
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CURLM *handle = nullptr;
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public:
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/**
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* Allocate a new CURLM*.
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*
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* Throws std::runtime_error on error.
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*/
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CurlMulti()
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:handle(curl_multi_init())
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{
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if (handle == nullptr)
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throw std::runtime_error("curl_multi_init() failed");
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}
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/**
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* Create an empty instance.
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*/
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CurlMulti(std::nullptr_t):handle(nullptr) {}
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CurlMulti(CurlMulti &&src):handle(std::exchange(src.handle, nullptr)) {}
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~CurlMulti() {
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if (handle != nullptr)
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curl_multi_cleanup(handle);
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}
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operator bool() const {
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return handle != nullptr;
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}
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CurlMulti &operator=(CurlMulti &&src) {
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std::swap(handle, src.handle);
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return *this;
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}
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CURL *Get() {
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return handle;
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}
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template<typename T>
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void SetOption(CURLMoption option, T value) {
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auto code = curl_multi_setopt(handle, option, value);
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if (code != CURLM_OK)
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throw std::runtime_error(curl_multi_strerror(code));
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}
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};
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#endif
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