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use crate::{
PickerArgInfo,
parselib::{MaskedArg, ParserStyle},
};
#[inline(always)]
pub fn build_possible_flags(style: &ParserStyle, arg_info: &PickerArgInfo) -> Vec<String> {
let mut possible_flags = vec![];
if let Some(short) = arg_info.short {
possible_flags.push(style.flag_string(short));
}
if let Some(long) = arg_info.long {
let converted = style.naming_case.convert(long.to_string());
possible_flags.push(style.flag_string(&converted));
}
if let Some(aliases) = &arg_info.alias {
for alias in aliases {
let converted = style.naming_case.convert(alias.to_string());
possible_flags.push(style.flag_string(&converted));
}
}
possible_flags
}
/// Extract a single value from the raw strings tagged by [`SingleMatcher`](crate::parselib::SingleMatcher).
///
/// Returns `None` if no value is available (empty slice),
/// the inline value after the style separator if present (eq mode),
/// or the value directly (positional or flag-following).
///
/// This is the standard `pick` helper for all `Single`-type
/// [`Pickable`](crate::Pickable) implementations.
#[must_use]
pub fn seek_single<'a>(raw_strs: &'a [&'a str]) -> Option<&'a str> {
match raw_strs.len() {
0 => None,
1 => {
let s = raw_strs[0];
let sep = ParserStyle::global_style().value_separator;
if let Some(pos) = s.rfind(sep) {
Some(&s[pos + 1..])
} else {
Some(s)
}
}
_ => Some(raw_strs[1]),
}
}
/// Seeks the index of the end-of-options marker (`--`) in the argument list.
///
/// This function searches for the standard end-of-options separator (`--`)
/// in the given argument list, respecting the parser's style settings
/// (e.g., case sensitivity). The end-of-options marker indicates that all
/// subsequent arguments should be treated as positional arguments, not flags.
#[must_use]
pub fn seek_end_of_options(args: &[MaskedArg], style: &ParserStyle) -> Option<usize> {
args.iter()
.find(|arg| {
if style.case_sensitive {
arg.raw == style.end_of_options
} else {
arg.raw.eq_ignore_ascii_case(style.end_of_options)
}
})
.map(|arg| arg.raw_idx)
}
/// Seeks arguments in `args` that are exactly equal to the given `string`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn seek_eq(args: &[MaskedArg], string: &str, case_sensitive: bool) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
arg.raw == string
} else {
arg.raw.eq_ignore_ascii_case(string)
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that contain the given `string` as a substring.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn seek_contains(args: &[MaskedArg], string: &str, case_sensitive: bool) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
arg.raw.contains(string)
} else {
arg.raw.to_lowercase().contains(&string.to_lowercase())
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that start with the given `string`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn seek_start_with(args: &[MaskedArg], string: &str, case_sensitive: bool) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
arg.raw.starts_with(string)
} else {
arg.raw.to_lowercase().starts_with(&string.to_lowercase())
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that end with the given `string`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn seek_end_with(args: &[MaskedArg], string: &str, case_sensitive: bool) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
arg.raw.ends_with(string)
} else {
arg.raw.to_lowercase().ends_with(&string.to_lowercase())
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that are exactly equal to any of the given `strings`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn multi_seek_eq(args: &[MaskedArg], strings: &[&str], case_sensitive: bool) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
strings.contains(&arg.raw)
} else {
strings.iter().any(|s| arg.raw.eq_ignore_ascii_case(s))
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that contain any of the given `strings` as a substring.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn multi_seek_contains(
args: &[MaskedArg],
strings: &[&str],
case_sensitive: bool,
) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
strings.iter().any(|s| arg.raw.contains(s))
} else {
let lower_raw = arg.raw.to_lowercase();
strings
.iter()
.any(|s| lower_raw.contains(&s.to_lowercase()))
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that start with any of the given `strings`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn multi_seek_start_with(
args: &[MaskedArg],
strings: &[&str],
case_sensitive: bool,
) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
strings.iter().any(|s| arg.raw.starts_with(s))
} else {
let lower_raw = arg.raw.to_lowercase();
strings
.iter()
.any(|s| lower_raw.starts_with(&s.to_lowercase()))
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Seeks arguments in `args` that end with any of the given `strings`.
///
/// Returns the indices of matching arguments.
#[must_use]
#[inline(always)]
pub fn multi_seek_end_with(
args: &[MaskedArg],
strings: &[&str],
case_sensitive: bool,
) -> Vec<usize> {
args.iter()
.filter(|arg| {
if case_sensitive {
strings.iter().any(|s| arg.raw.ends_with(s))
} else {
let lower_raw = arg.raw.to_lowercase();
strings
.iter()
.any(|s| lower_raw.ends_with(&s.to_lowercase()))
}
})
.map(|arg| arg.raw_idx)
.collect()
}
/// Converts a `&Vec<String>` into a `Vec<&str>` by borrowing each string's slice.
///
/// This is useful for converting owned `String` vectors into borrowed `&str` slices
/// for functions that take `&[&str]` or similar parameters.
#[must_use]
#[inline(always)]
#[doc(hidden)]
pub fn vec_string_to_vec_str(input: &[String]) -> Vec<&str> {
input.iter().map(|s| s.as_str()).collect()
}
/// Converts a `&Vec<String>` into a `Vec<&str>` by borrowing each string's slice.
///
/// This is useful for converting owned `String` vectors into borrowed `&str` slices
/// for functions that take `&[&str]` or similar parameters.
#[macro_export]
#[doc(hidden)]
macro_rules! vec_string_slice {
($v:expr) => {
$v.iter()
.map(|s| s.as_str())
.collect::<Vec<&str>>()
.as_slice()
};
}
/// Gets the first element from a vector of seek results, if any.
///
/// Returns `Some(index)` if the vector is non-empty, otherwise `None`.
#[must_use]
#[inline(always)]
pub fn get_seeked_first(seeked: Vec<usize>) -> Option<usize> {
seeked.into_iter().next()
}
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