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Why are command-line utilities stored in "apps"? And why are apps like "editor" or "terminal" top-level directories? Command-line utilities now go in "utils". GUI stuff now goes in "gui". This includes: libui -> gui/libui, wind -> gui/wind, GUI apps -> gui/apps, editor&terminal -> gui/apps... System services go in "system".
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#include <errno.h>
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#include <os/ArgumentParser.h>
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#include <os/File.h>
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#include <sys/stat.h>
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Result<int> luna_main(int argc, char** argv)
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{
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Vector<StringView> files;
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bool only_atime { false };
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bool only_mtime { false };
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bool no_create { false };
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bool no_dereference { false };
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os::ArgumentParser parser;
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parser.add_description("Update the access and modification times of files."_sv);
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parser.add_system_program_info("touch"_sv);
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parser.set_vector_argument(files, "files", true);
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parser.add_switch_argument(only_atime, 'a', ""_sv, "change only the access time"_sv);
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parser.add_switch_argument(no_create, 'c', "no-create"_sv, "do not create new files"_sv);
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parser.add_switch_argument(no_dereference, 'h', "no-dereference"_sv, "do not follow symbolic links"_sv);
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parser.add_switch_argument(only_mtime, 'm', ""_sv, "change only the modification time"_sv);
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TRY(parser.parse(argc, argv));
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if (only_atime && only_mtime)
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{
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os::eprintln("%s: only one of -a and -m can be specified.", argv[0]);
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parser.short_usage(argv[0]);
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}
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struct timespec times[2] = {
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{ .tv_sec = 0, .tv_nsec = only_mtime ? UTIME_OMIT : UTIME_NOW },
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{ .tv_sec = 0, .tv_nsec = only_atime ? UTIME_OMIT : UTIME_NOW },
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};
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for (auto& filename : files)
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{
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SharedPtr<os::File> file;
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if (no_create) file = TRY(os::File::open(filename, os::File::ReadOnly));
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else
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file = TRY(os::File::open_or_create(filename, os::File::ReadOnly));
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if (futimens(file->fd(), times, no_dereference ? AT_SYMLINK_NOFOLLOW : 0) < 0) return err(errno);
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}
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return 0;
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}
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