mirror of
https://github.com/KingDuckZ/kamokan.git
synced 2024-11-27 00:43:47 +00:00
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
/* Copyright 2017, Michele Santullo
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* This file is part of "tawashi".
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*
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* "tawashi" is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* "tawashi" is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with "tawashi". If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "curl_wrapper.hpp"
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#include <curl/curl.h>
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#include <cassert>
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#include <ciso646>
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#include <algorithm>
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#if !defined(NDEBUG)
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//# define CURL_WRAPPER_VERBOSE
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#endif
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#if defined(CURL_WRAPPER_VERBOSE)
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# include <iostream>
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#endif
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namespace tawashi {
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namespace {
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struct CurlDeleter {
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void operator() (CURL* parCurl) const {
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#if defined(CURL_WRAPPER_VERBOSE)
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std::cerr << "Deleting CURL* " << parCurl << " and cleaning up\n";
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#endif
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assert(parCurl);
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curl_easy_cleanup(parCurl);
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curl_global_cleanup();
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}
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};
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struct CurlBufferDeleter {
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void operator() (char* parPtr) {
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assert(parPtr);
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curl_free(parPtr);
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}
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};
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typedef std::unique_ptr<char, CurlBufferDeleter> CurlBufferPointer;
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CurlWrapper::CurlPtr get_new_curl() {
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static std::weak_ptr<CURL> curl;
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#if defined(CURL_WRAPPER_VERBOSE)
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std::cerr << "CURL object requested\n";
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#endif
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auto shared = curl.lock();
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if (not shared) {
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#if defined(CURL_WRAPPER_VERBOSE)
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std::cerr << "CURL weak pointer has expired! Calling curl_global_init()\n";
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#endif
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if (curl_global_init(CURL_GLOBAL_ALL))
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return CurlWrapper::CurlPtr();
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#if defined(CURL_WRAPPER_VERBOSE)
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std::cerr << "Calling curl_easy_init()\n";
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#endif
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shared.reset(curl_easy_init(), CurlDeleter());
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if (not shared) {
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curl_global_cleanup();
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return CurlWrapper::CurlPtr();
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}
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curl = shared;
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}
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#if defined(CURL_WRAPPER_VERBOSE)
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std::cerr << "CURL shared pointer ready: " << shared.get() << '\n';
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#endif
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assert(shared);
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return shared;
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}
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} //unnamed namespace
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std::string unescape_string (const CurlWrapper& parCurl, const boost::string_ref& parString) {
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if (parString.empty())
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return std::string();
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std::string new_value(parString.data(), parString.size());
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std::replace(new_value.begin(), new_value.end(), '+', ' ');
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return parCurl.unescape(new_value);
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}
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CurlWrapper::CurlWrapper() :
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m_curl(get_new_curl())
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{
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assert(m_curl);
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}
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CurlWrapper::~CurlWrapper() noexcept = default;
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std::string CurlWrapper::escape (const boost::string_ref& parText) const {
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const CurlBufferPointer buff(curl_easy_escape(m_curl.get(), parText.data(), parText.size()));
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return std::string(buff.get());
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}
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std::string CurlWrapper::unescape (const boost::string_ref& parText) const {
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int outLen;
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const CurlBufferPointer buff(curl_easy_unescape(m_curl.get(), parText.data(), parText.size(), &outLen));
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return std::string(buff.get(), outLen);
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}
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} //namespace tawashi
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