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|
use crate::{
matcher_needed::*,
parselib::{build_possible_flags, seek_end_of_options},
};
/// `MultiArgMatcher` matches a named flag and **all** consecutive arguments
/// that follow it, stopping at the next flag, the `--` marker, or the end
/// of the argument list.
///
/// This is the tag implementation for `Multi` and `GreedyMulti` types
/// such as `Vec<String>` (`--files a.txt b.txt`).
///
/// # Behavior
///
/// | Input | `on_match_all` |
/// |-------|----------------|
/// | `--val a b --val d e` | `[0, 1, 2, 5, 6]` (two groups) |
/// | `--val=1 2` | `[0, 1]` (eq mode + one extra value) |
///
/// Args after `--` are ignored.
pub struct MultiArgMatcher;
impl Matcher for MultiArgMatcher {
fn on_match_one(
args: &[MaskedArg],
style: &ParserStyle,
arg_info: &PickerArgInfo,
) -> Option<usize> {
if arg_info.positional {
return args.first().map(|a| a.raw_idx);
}
let possible_flags = build_possible_flags(style, arg_info);
let end = seek_end_of_options(args, style);
let sep = style.value_separator;
for arg in args {
if end.is_some_and(|e| arg.raw_idx >= e) {
break;
}
let matched = possible_flags
.iter()
.any(|f| Self::flag_match(arg.raw, f, style.case_sensitive, sep));
if matched {
return Some(arg.raw_idx);
}
}
None
}
fn on_match_all(
args: &[MaskedArg],
style: &ParserStyle,
arg_info: &PickerArgInfo,
) -> Vec<usize> {
if arg_info.positional {
let end = seek_end_of_options(args, style);
return args
.iter()
.take_while(|a| end.is_none_or(|e| a.raw_idx < e))
.map(|a| a.raw_idx)
.collect();
}
let possible_flags = build_possible_flags(style, arg_info);
let end = seek_end_of_options(args, style);
let sep = style.value_separator;
let is_flag =
|raw: &str| raw.starts_with(style.long_prefix) || raw.starts_with(style.short_prefix);
let is_our_flag = |raw: &str| {
possible_flags
.iter()
.any(|f| Self::flag_match(raw, f, style.case_sensitive, sep))
};
let mut result = Vec::new();
let mut i = 0;
while i < args.len() {
if end.is_some_and(|e| args[i].raw_idx >= e) {
break;
}
let matched = is_our_flag(args[i].raw);
if matched {
result.push(args[i].raw_idx);
if Self::is_eq_match(args[i].raw, &possible_flags, style.case_sensitive, sep) {
i += 1;
while i < args.len()
&& end.is_none_or(|e| args[i].raw_idx < e)
&& !is_flag(args[i].raw)
{
result.push(args[i].raw_idx);
i += 1;
}
continue;
}
i += 1;
while i < args.len()
&& end.is_none_or(|e| args[i].raw_idx < e)
&& !is_flag(args[i].raw)
{
result.push(args[i].raw_idx);
i += 1;
}
continue;
}
i += 1;
}
result
}
}
impl MultiArgMatcher {
#[inline(always)]
fn flag_match(raw: &str, flag_str: &str, case_sensitive: bool, sep: char) -> bool {
let eq =
|r: &str, f: &str| r.len() > f.len() && r.as_bytes().get(f.len()) == Some(&(sep as u8));
if case_sensitive {
raw == flag_str || (raw.starts_with(flag_str) && eq(raw, flag_str))
} else {
raw.eq_ignore_ascii_case(flag_str)
|| (raw.len() > flag_str.len()
&& raw[..flag_str.len()].eq_ignore_ascii_case(flag_str)
&& raw.as_bytes()[flag_str.len()] == sep as u8)
}
}
#[inline(always)]
fn is_eq_match(raw: &str, flags: &[String], case_sensitive: bool, sep: char) -> bool {
flags.iter().any(|f| {
Self::flag_match(raw, f, case_sensitive, sep)
&& raw.len() > f.len()
&& raw.as_bytes().get(f.len()) == Some(&(sep as u8))
})
}
}
|
