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refactor(help): Consolidate value printing

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Ed Page 2022-08-25 13:07:32 -05:00
parent e00abc6905
commit 0e0c5eb218
1 changed files with 18 additions and 26 deletions
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28
src/builder/arg.rs
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@ -4104,42 +4104,34 @@ impl fmt::Debug for Arg {
pub(crate) fn render_arg_val(arg: &Arg) -> String {
let mut rendered = String::new();
let delim = " ";
let num_vals = arg.get_num_args().expect(INTERNAL_ERROR_MSG);
let val_names = if arg.val_names.is_empty() {
let mut val_names = if arg.val_names.is_empty() {
vec![arg.id.as_internal_str().to_owned()]
} else {
arg.val_names.clone()
};
let mut extra_values = false;
debug_assert!(arg.is_takes_value_set());
let num_vals = arg.get_num_args().expect(INTERNAL_ERROR_MSG);
if val_names.len() == 1 {
let arg_name = format!("<{}>", val_names[0]);
let min = num_vals.min_values().max(1);
for n in 1..=min {
if n != 1 {
rendered.push_str(delim);
let val_name = val_names.pop().unwrap();
val_names = vec![val_name; min];
}
rendered.push_str(&arg_name);
}
extra_values |= min < num_vals.max_values();
} else {
debug_assert!(1 < val_names.len());
debug_assert!(arg.is_takes_value_set());
for (n, val_name) in val_names.iter().enumerate() {
let arg_name = format!("<{}>", val_name);
if n != 0 {
rendered.push_str(delim);
rendered.push(' ');
}
rendered.push_str(&arg_name);
}
let mut extra_values = false;
extra_values |= val_names.len() < num_vals.max_values();
}
if arg.is_positional() && matches!(*arg.get_action(), ArgAction::Append) {
extra_values = true;
}
if extra_values {
rendered.push_str("...");
}