63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/* This file is part of FediBlock-backend.
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* Copyright © 2020 tastytea <tastytea@tastytea.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "time.hpp"
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#include <chrono>
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#include <cstdint>
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#include <ctime>
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#include <iomanip>
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#include <sstream>
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#include <string>
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#include <string_view>
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namespace FediBlock::time
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{
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using std::get_time;
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using std::strftime;
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using std::string;
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using std::string_view;
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using std::stringstream;
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using std::time_t;
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using std::uint16_t;
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using std::chrono::system_clock;
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string to_string(const system_clock::time_point &timepoint,
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const string_view format)
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{
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constexpr uint16_t bufsize = 1024;
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time_t time = system_clock::to_time_t(timepoint);
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std::tm *tm{nullptr};
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tm = std::gmtime(&time);
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char buffer[bufsize];
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strftime(buffer, bufsize, format.data(), tm);
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return buffer;
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}
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string to_string(const string_view timestring, const string_view format)
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{
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std::tm tm{};
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tm.tm_isdst = -1; // Detect daylight saving time.
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stringstream ss(timestring.data());
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ss >> get_time(&tm, "%Y-%m-%dT%T"); // Assume time is UTC (%F doesn't work).
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return to_string(system_clock::from_time_t(timegm(&tm)), format);
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}
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} // namespace FediBlock::time
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