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rev: use "if let" instead of match

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This commit is contained in:
Daniel Hofstetter
2024-07-30 09:22:24 +02:00
parent 1b5d8f3efe
commit ecd3cdba80
1 changed files with 14 additions and 16 deletions
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30
src/uu/rev/src/rev.rs
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@@ -24,24 +24,22 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
let zero = matches.get_flag(options::ZERO);
let sep = if zero { b'\0' } else { b'\n' };
match files {
Some(files) => {
for path in files {
let Ok(file) = std::fs::File::open(path) else {
uucore::error::set_exit_code(1);
uucore::show_error!("cannot open {path}: No such file or directory");
continue;
};
if let Err(err) = rev_stream(file, sep) {
uucore::error::set_exit_code(1);
uucore::show_error!("cannot read {path}: {err}");
}
if let Some(files) = files {
for path in files {
let Ok(file) = std::fs::File::open(path) else {
uucore::error::set_exit_code(1);
uucore::show_error!("cannot open {path}: No such file or directory");
continue;
};
if let Err(err) = rev_stream(file, sep) {
uucore::error::set_exit_code(1);
uucore::show_error!("cannot read {path}: {err}");
}
}
None => {
let stdin = std::io::stdin().lock();
let _ = rev_stream(stdin, sep);
}
} else {
let stdin = std::io::stdin().lock();
let _ = rev_stream(stdin, sep);
}
Ok(())