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use match guard to minimize

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TechHara 2022-12-13 01:10:48 -05:00
parent 50c8bd4c6b
commit f334ae3149
1 changed files with 29 additions and 30 deletions
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59
src/uu/cut/src/cut.rs
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@ -551,42 +551,41 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
let zero_terminated = matches.get_flag(options::ZERO_TERMINATED);
match matches.get_one::<String>(options::DELIMITER).map(|s| s.as_str()) {
Some(mut delim) => {
if whitespace_delimited {
Some(_) if whitespace_delimited => {
Err("invalid input: Only one of --delimiter (-d) or -w option can be specified".into())
}
else {
// GNU's `cut` supports `-d=` to set the delimiter to `=`.
// Clap parsing is limited in this situation, see:
// https://github.com/uutils/coreutils/issues/2424#issuecomment-863825242
if delimiter_is_equal {
delim = "=";
} else if delim == "''" {
// treat `''` as empty delimiter
delim = "";
}
if delim.chars().count() > 1 {
Err("invalid input: The '--delimiter' ('-d') option expects empty or 1 character long, but was provided a value 2 characters or longer".into())
Some(mut delim) => {
// GNU's `cut` supports `-d=` to set the delimiter to `=`.
// Clap parsing is limited in this situation, see:
// https://github.com/uutils/coreutils/issues/2424#issuecomment-863825242
if delimiter_is_equal {
delim = "=";
} else if delim == "''" {
// treat `''` as empty delimiter
delim = "";
}
if delim.chars().count() > 1 {
Err("invalid input: The '--delimiter' ('-d') option expects empty or 1 character long, but was provided a value 2 characters or longer".into())
} else {
let delim = if delim.is_empty() {
"\0".to_owned()
} else {
let delim = if delim.is_empty() {
"\0".to_owned()
} else {
delim.to_owned()
};
delim.to_owned()
};
Ok(Mode::Fields(
ranges,
FieldOptions {
delimiter: delim,
out_delimiter: out_delim,
only_delimited,
whitespace_delimited,
zero_terminated,
},
))
}
Ok(Mode::Fields(
ranges,
FieldOptions {
delimiter: delim,
out_delimiter: out_delim,
only_delimited,
whitespace_delimited,
zero_terminated,
},
))
}
}
None => Ok(Mode::Fields(
ranges,
FieldOptions {