RGBCube/uutils-coreutils
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Expand: use mod::options

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This commit is contained in:
Dean Li 2021-03-15 21:28:47 +08:00
parent 6829e7f359
commit cd775ed704
1 changed files with 23 additions and 10 deletions
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33
src/uu/expand/src/expand.rs
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@ -23,6 +23,13 @@ static VERSION: &str = env!("CARGO_PKG_VERSION");
static ABOUT: &str = "Convert tabs in each FILE to spaces, writing to standard output. static ABOUT: &str = "Convert tabs in each FILE to spaces, writing to standard output.
With no FILE, or when FILE is -, read standard input."; With no FILE, or when FILE is -, read standard input.";
pub mod options {
pub static TABS: &str = "tabs";
pub static INITIAL: &str = "initial";
pub static NO_UTF8: &str = "no-utf8";
pub static FILES: &str = "FILES";
}
static LONG_HELP: &str = ""; static LONG_HELP: &str = "";
static DEFAULT_TABSTOP: usize = 8; static DEFAULT_TABSTOP: usize = 8;
@ -65,13 +72,13 @@ struct Options {
impl Options { impl Options {
fn new(matches: &ArgMatches) -> Options { fn new(matches: &ArgMatches) -> Options {
let tabstops = match matches.value_of("tabstops") { let tabstops = match matches.value_of(options::TABS) {
Some(s) => tabstops_parse(s.to_string()), Some(s) => tabstops_parse(s.to_string()),
None => vec![DEFAULT_TABSTOP], None => vec![DEFAULT_TABSTOP],
}; };
let iflag = matches.is_present("iflag"); let iflag = matches.is_present(options::INITIAL);
let uflag = !matches.is_present("uflag"); let uflag = !matches.is_present(options::NO_UTF8);
// avoid allocations when dumping out long sequences of spaces // avoid allocations when dumping out long sequences of spaces
// by precomputing the longest string of spaces we will ever need // by precomputing the longest string of spaces we will ever need
@ -86,7 +93,7 @@ impl Options {
.unwrap(); // length of tabstops is guaranteed >= 1 .unwrap(); // length of tabstops is guaranteed >= 1
let tspaces = repeat(' ').take(nspaces).collect(); let tspaces = repeat(' ').take(nspaces).collect();
let files: Vec<String> = match matches.values_of("files") { let files: Vec<String> = match matches.values_of(options::FILES) {
Some(s) => s.map(|v| v.to_string()).collect(), Some(s) => s.map(|v| v.to_string()).collect(),
None => vec!["-".to_owned()], None => vec!["-".to_owned()],
}; };
@ -109,23 +116,29 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
.usage(&usage[..]) .usage(&usage[..])
.after_help(LONG_HELP) .after_help(LONG_HELP)
.arg( .arg(
Arg::with_name("iflag") Arg::with_name(options::INITIAL)
.long("initial") .long(options::INITIAL)
.short("i") .short("i")
.help("do not convert tabs after non blanks"), .help("do not convert tabs after non blanks"),
) )
.arg( .arg(
Arg::with_name("tabstops") Arg::with_name(options::TABS)
.long("tabs") .long(options::TABS)
.short("t") .short("t")
.value_name("N, LIST") .value_name("N, LIST")
.takes_value(true) .takes_value(true)
.help("have tabs N characters apart, not 8 or use comma separated list of explicit tab positions"), .help("have tabs N characters apart, not 8 or use comma separated list of explicit tab positions"),
) )
.arg( .arg(
Arg::with_name("uflags").long("no-utf8").short("U").help("interpret input file as 8-bit ASCII rather than UTF-8"), Arg::with_name(options::NO_UTF8)
.long(options::NO_UTF8)
.short("U")
.help("interpret input file as 8-bit ASCII rather than UTF-8"),
).arg( ).arg(
Arg::with_name("files").multiple(true).hidden(true).takes_value(true) Arg::with_name(options::FILES)
.multiple(true)
.hidden(true)
.takes_value(true)
) )
.get_matches_from(args); .get_matches_from(args);