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cksum: use clap for argument management (#1943)

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Yagiz Degirmenci 2021-03-27 15:31:29 +03:00 committed by GitHub
parent ac7edcc4fa
commit 0bdd61af5e
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2 changed files with 22 additions and 4 deletions
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1
src/uu/cksum/Cargo.toml
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@ -15,6 +15,7 @@ edition = "2018"
path = "src/cksum.rs"
[dependencies]
clap = "2.33"
libc = "0.2.42"
uucore = { version=">=0.0.7", package="uucore", path="../../uucore" }
uucore_procs = { version=">=0.0.5", package="uucore_procs", path="../../uucore_procs" }

25
src/uu/cksum/src/cksum.rs
View file

@ -10,6 +10,7 @@
#[macro_use]
extern crate uucore;
use clap::{App, Arg};
use std::fs::File;
use std::io::{self, stdin, BufReader, Read};
use std::path::Path;
@ -18,9 +19,10 @@ use std::path::Path;
const CRC_TABLE_LEN: usize = 256;
const CRC_TABLE: [u32; CRC_TABLE_LEN] = generate_crc_table();
const VERSION: &str = env!("CARGO_PKG_VERSION");
const NAME: &str = "cksum";
const SYNTAX: &str = "[OPTIONS] [FILE]...";
const SUMMARY: &str = "Print CRC and size for each file";
const LONG_HELP: &str = "";
// this is basically a hack to get "loops" to work on Rust 1.33. Once we update to Rust 1.46 or
// greater, we can just use while loops
@ -160,10 +162,25 @@ fn cksum(fname: &str) -> io::Result<(u32, usize)> {
}
}
pub fn uumain(args: impl uucore::Args) -> i32 {
let matches = app!(SYNTAX, SUMMARY, LONG_HELP).parse(args.collect_str());
mod options {
pub static FILE: &str = "file";
}
let files = matches.free;
pub fn uumain(args: impl uucore::Args) -> i32 {
let args = args.collect_str();
let matches = App::new(executable!())
.name(NAME)
.version(VERSION)
.about(SUMMARY)
.usage(SYNTAX)
.arg(Arg::with_name(options::FILE).hidden(true).multiple(true))
.get_matches_from(args);
let files: Vec<String> = match matches.values_of(options::FILE) {
Some(v) => v.clone().map(|v| v.to_owned()).collect(),
None => vec![],
};
if files.is_empty() {
match cksum("-") {