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Simplify possible subcommand

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Donough Liu 2020-12-29 23:49:41 +08:00 committed by ldm0
parent 9cf007378b
commit 5774eb2c52
1 changed files with 18 additions and 21 deletions
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39
src/parse/parser.rs
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@ -667,30 +667,27 @@ impl<'help, 'app> Parser<'help, 'app> {
fn possible_subcommand(&self, arg_os: &ArgStr) -> Option<&str> {
debug!("Parser::possible_subcommand: arg={:?}", arg_os);
if self.is_set(AS::ArgsNegateSubcommands) && self.is_set(AS::ValidArgFound) {
return None;
}
if !(self.is_set(AS::ArgsNegateSubcommands) && self.is_set(AS::ValidArgFound)) {
if self.is_set(AS::InferSubcommands) {
// For subcommand `test`, we accepts it's prefix: `t`, `te`,
// `tes` and `test`.
let v = self
.app
.all_subcommand_names()
.filter(|s| arg_os.is_prefix_of(s))
.collect::<Vec<_>>();
if self.is_set(AS::InferSubcommands) {
let v = self
.app
.all_subcommand_names()
.filter(|s| arg_os.is_prefix_of(s))
.collect::<Vec<_>>();
if v.len() == 1 {
return Some(v[0]);
}
for sc in &v {
if sc == arg_os {
return Some(sc);
if v.len() == 1 {
return Some(v[0]);
}
}
} else if let Some(sc) = self.app.find_subcommand(arg_os) {
return Some(&sc.name);
}
// If there is any ambiguity, fallback to non-infer subcommand
// search.
}
if let Some(sc) = self.app.find_subcommand(arg_os) {
return Some(&sc.name);
}
}
None
}