diff --git a/Base/usr/share/man/man1/date.md b/Base/usr/share/man/man1/date.md new file mode 100644 index 0000000000..e05d0096a6 --- /dev/null +++ b/Base/usr/share/man/man1/date.md @@ -0,0 +1,32 @@ +## Name + +date - print or set the system date and time + +## Synopsis + +```**sh +$ date [--set date] [--unix] [--iso-8601] [--rfc-3339] [--rfc-5322] +``` + +## Description + +date is a utility to set the system date and time +or print the system date and time in various formats. + +## Options + +* `-s`, `--set`: Set system date and time +* `-u`, `--unix`: Print date as Unix timestamp +* `-i`, `--iso-8601`: Print date in ISO 8601 format +* `-r`, `--rfc-3339`: Print date in RFC 3339 format +* `-R`, `--rfc-5322`: Print date in RFC 5322 format + +## Examples + +```sh +# Print the current date and time in ISO 8601 format +$ date --iso-8601 + +# Set date to 1610017485 (UNIX time) +$ date -s 1610017485 +``` diff --git a/Userland/date.cpp b/Userland/date.cpp index 5ed9030cb5..057112a4c3 100644 --- a/Userland/date.cpp +++ b/Userland/date.cpp @@ -26,6 +26,7 @@ #include #include +#include #include #include #include @@ -38,26 +39,61 @@ int main(int argc, char** argv) return 1; } - time_t now = time(nullptr); + bool print_unix_date = false; + bool print_iso_8601 = false; + bool print_rfc_3339 = false; + bool print_rfc_5322 = false; + const char* set_date = nullptr; + + Core::ArgsParser args_parser; + args_parser.add_option(set_date, "Set system date and time", "set", 's', "date"); + args_parser.add_option(print_unix_date, "Print date as Unix timestamp", "unix", 'u'); + args_parser.add_option(print_iso_8601, "Print date in ISO 8601 format", "iso-8601", 'i'); + args_parser.add_option(print_rfc_3339, "Print date in RFC 3339 format", "rfc-3339", 'r'); + args_parser.add_option(print_rfc_5322, "Print date in RFC 5322 format", "rfc-5322", 'R'); + args_parser.parse(argc, argv); + + if (set_date != nullptr) { + auto number = String(set_date).to_uint(); - if (argc == 2 && !strcmp(argv[1], "-u")) { - printf("%lld\n", now); - return 0; - } - if (argc == 3 && !strcmp(argv[1], "-s")) { - auto number = StringView(argv[2]).to_uint(); if (!number.has_value()) { fprintf(stderr, "date: Invalid timestamp value"); return 1; } + timespec ts = { number.value(), 0 }; if (clock_settime(CLOCK_REALTIME, &ts) < 0) { perror("clock_settime"); return 1; } + return 0; } - printf("%s\n", Core::DateTime::from_timestamp(now).to_string().characters()); - return 0; + // FIXME: this should be improved and will need to be cleaned up + // when additional output formats and formatting is supported + if (print_unix_date && print_iso_8601 && print_rfc_3339 && print_rfc_5322) { + fprintf(stderr, "date: multiple output formats specified\n"); + return 1; + } + + time_t now = time(nullptr); + auto date = Core::DateTime::from_timestamp(now); + + if (print_unix_date) { + printf("%lld\n", (long long)now); + return 0; + } else if (print_iso_8601) { + printf("%s\n", date.to_string("%Y-%m-%dT%H:%M:%S-00:00").characters()); + return 0; + } else if (print_rfc_5322) { + printf("%s\n", date.to_string("%a, %d %b %Y %H:%M:%S -0000").characters()); + return 0; + } else if (print_rfc_3339) { + printf("%s\n", date.to_string("%Y-%m-%d %H:%M:%S-00:00").characters()); + return 0; + } else { + printf("%s\n", date.to_string().characters()); + return 0; + } }