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uptime: Port to Core::Stream::File, use AK::human_readable_time()

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This commit is contained in:
Karol Kosek 2022-12-18 13:25:08 +01:00 committed by Sam Atkins
parent 25fa485dfb
commit 917e32d31a
Notes: sideshowbarker 2024-07-17 08:42:05 +09:00 
Author: https://github.com/krkk
Commit: https://github.com/SerenityOS/serenity/commit/917e32d31a
Pull-request: https://github.com/SerenityOS/serenity/pull/16568
Reviewed-by: https://github.com/AtkinsSJ ✅
1 changed files with 11 additions and 38 deletions
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49
Userland/Utilities/uptime.cpp
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@ -1,57 +1,30 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Karol Kosek <krkk@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Format.h>
#include <AK/NumberFormat.h>
#include <LibCore/Stream.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <stdio.h>
#include <unistd.h>
ErrorOr<int> serenity_main(Main::Arguments)
{
TRY(Core::System::pledge("stdio rpath"));
FILE* fp = fopen("/sys/kernel/uptime", "r");
if (!fp) {
perror("fopen(/sys/kernel/uptime)");
return 1;
}
auto file = TRY(Core::Stream::File::open("/sys/kernel/uptime"sv, Core::Stream::OpenMode::Read));
TRY(Core::System::pledge("stdio"));
char buffer[BUFSIZ];
auto* p = fgets(buffer, sizeof(buffer), fp);
if (!p) {
perror("fgets");
return 1;
}
Array<u8, BUFSIZ> buffer;
auto read_buffer = TRY(file->read(buffer));
auto maybe_seconds = AK::StringUtils::convert_to_uint(StringView(read_buffer));
if (!maybe_seconds.has_value())
return Error::from_string_literal("Couldn't convert to number");
auto seconds = maybe_seconds.release_value();
unsigned seconds;
sscanf(buffer, "%u", &seconds);
out("Up ");
if (seconds / 86400 > 0) {
out("{} day{}, ", seconds / 86400, (seconds / 86400) == 1 ? "" : "s");
seconds %= 86400;
}
if (seconds / 3600 > 0) {
out("{} hour{}, ", seconds / 3600, (seconds / 3600) == 1 ? "" : "s");
seconds %= 3600;
}
if (seconds / 60 > 0) {
out("{} minute{}, ", seconds / 60, (seconds / 60) == 1 ? "" : "s");
seconds %= 60;
}
out("{} second{}", seconds, seconds == 1 ? "" : "s");
outln();
fclose(fp);
outln("Up {}", human_readable_time(seconds));
return 0;
}