forked from bonsai/harakit
Merge remote-tracking branch 'origin/sleep'
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commit
9ef6289e00
9
Makefile
9
Makefile
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@ -30,7 +30,7 @@ RUSTLIBS = --extern getopt=build/o/libgetopt.rlib \
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CFLAGS += -I$(SYSEXITS)
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.PHONY: all
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all: dj false fop hru intcmp mm npc rpn scrut str strcmp swab true
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all: dj false fop hru intcmp mm npc rpn scrut sleep str strcmp swab true
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build:
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# keep build/include until bindgen(1) has stdin support
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@ -119,6 +119,13 @@ scrut: build/bin/scrut
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build/bin/scrut: src/scrut.c build
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$(CC) $(CFLAGS) -o $@ src/scrut.c
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.PHONY: sleep
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sleep: build/bin/sleep
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build/bin/sleep: src/sleep.rs build rustlibs
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$(RUSTC) $(RUSTFLAGS) \
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--extern sysexits=build/o/libsysexits.rlib \
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-o $@ src/sleep.rs
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.PHONY: str
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str: build/bin/str
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build/bin/str: src/str.c build
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53
docs/sleep.1
Normal file
53
docs/sleep.1
Normal file
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@ -0,0 +1,53 @@
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.\" Copyright (c) 2024 DTB <trinity@trinity.moe>
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.\"
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.\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
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.\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
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.TH SLEEP 1
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.SH NAME
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sleep \(en wait a moment
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.SH SYNOPSIS
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sleep
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.RB [ seconds ]
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.SH DESCRIPTION
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Sleep waits the given amount of seconds before exiting.
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.SH DIAGNOSTICS
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Sleep exits successfully when the time specified has elapsed, or unsuccessfully
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if the time fails to elapse or if invoked incorrectly. In the latter scenario
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sleep will also print a usage synopsis.
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.SH BUGS
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User may still be tired after invoking sleep.
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.SH EXAMPLES
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The following invocation sleeps for five seconds.
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.RS
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.R sleep 5
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.RE
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The following sh(1p) command line sleeps for five minutes, or for sixty
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seconds, five times, using rpn(1) and xargs(1p).
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.RS
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.R $ rpn 60 5 '*' | xargs sleep
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.RE
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.SH COPYRIGHT
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Copyright (c) 2024 DTB. License AGPLv3+: GNU AGPL version 3 or later
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<https://gnu.org/licenses/gpl.html>.
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.SH SEE ALSO
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sleep(3)
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47
src/sleep.rs
Normal file
47
src/sleep.rs
Normal file
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@ -0,0 +1,47 @@
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/*
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* Copyright (c) 2024 DTB <trinity@trinity.moe>
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU Affero General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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* 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 https://www.gnu.org/licenses/.
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*/
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use std::{
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env::args,
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process::ExitCode,
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thread::sleep,
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time::Duration
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};
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extern crate sysexits;
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use sysexits::EX_USAGE;
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fn usage(s: &str) -> ExitCode {
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eprintln!("Usage: {} [seconds]", s);
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ExitCode::from(EX_USAGE as u8)
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}
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fn main() -> ExitCode {
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let argv = args().collect::<Vec<String>>();
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if argv.len() == 2 {
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if let Ok(s) = argv[1].parse::<u64>() {
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sleep(Duration::from_secs(s));
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ExitCode::SUCCESS
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} else {
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usage(&argv[0])
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}
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} else {
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usage(&argv[0])
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}
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}
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