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100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/DateTime.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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int main(int argc, char** argv)
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{
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if (pledge("stdio settime", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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bool print_unix_date = false;
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bool print_iso_8601 = false;
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bool print_rfc_3339 = false;
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bool print_rfc_5322 = false;
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const char* set_date = nullptr;
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Core::ArgsParser args_parser;
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args_parser.add_option(set_date, "Set system date and time", "set", 's', "date");
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args_parser.add_option(print_unix_date, "Print date as Unix timestamp", "unix", 'u');
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args_parser.add_option(print_iso_8601, "Print date in ISO 8601 format", "iso-8601", 'i');
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args_parser.add_option(print_rfc_3339, "Print date in RFC 3339 format", "rfc-3339", 'r');
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args_parser.add_option(print_rfc_5322, "Print date in RFC 5322 format", "rfc-5322", 'R');
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args_parser.parse(argc, argv);
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if (set_date != nullptr) {
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auto number = String(set_date).to_uint();
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if (!number.has_value()) {
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fprintf(stderr, "date: Invalid timestamp value");
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return 1;
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}
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timespec ts = { number.value(), 0 };
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if (clock_settime(CLOCK_REALTIME, &ts) < 0) {
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perror("clock_settime");
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return 1;
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}
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return 0;
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}
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// FIXME: this should be improved and will need to be cleaned up
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// when additional output formats and formatting is supported
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if (print_unix_date && print_iso_8601 && print_rfc_3339 && print_rfc_5322) {
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fprintf(stderr, "date: multiple output formats specified\n");
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return 1;
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}
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time_t now = time(nullptr);
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auto date = Core::DateTime::from_timestamp(now);
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if (print_unix_date) {
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printf("%lld\n", (long long)now);
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return 0;
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} else if (print_iso_8601) {
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printf("%s\n", date.to_string("%Y-%m-%dT%H:%M:%S-00:00").characters());
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return 0;
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} else if (print_rfc_5322) {
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printf("%s\n", date.to_string("%a, %d %b %Y %H:%M:%S -0000").characters());
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return 0;
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} else if (print_rfc_3339) {
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printf("%s\n", date.to_string("%Y-%m-%d %H:%M:%S-00:00").characters());
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return 0;
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} else {
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printf("%s\n", date.to_string().characters());
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return 0;
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}
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}
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