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// Std
use std::{
ffi::{OsStr, OsString},
iter::{Cloned, Flatten},
slice::Iter,
};
use crate::builder::ArgPredicate;
use crate::parser::ValueSource;
use crate::util::eq_ignore_case;
use crate::util::AnyValue;
use crate::util::AnyValueId;
use crate::INTERNAL_ERROR_MSG;
#[derive(Debug, Clone)]
pub(crate) struct MatchedArg {
source: Option<ValueSource>,
indices: Vec<usize>,
type_id: Option<AnyValueId>,
vals: Vec<Vec<AnyValue>>,
raw_vals: Vec<Vec<OsString>>,
ignore_case: bool,
}
impl MatchedArg {
pub(crate) fn new_arg(arg: &crate::Arg) -> Self {
let ignore_case = arg.is_ignore_case_set();
Self {
source: None,
indices: Vec::new(),
type_id: Some(arg.get_value_parser().type_id()),
vals: Vec::new(),
raw_vals: Vec::new(),
ignore_case,
}
}
pub(crate) fn new_group() -> Self {
let ignore_case = false;
Self {
source: None,
indices: Vec::new(),
type_id: None,
vals: Vec::new(),
raw_vals: Vec::new(),
ignore_case,
}
}
pub(crate) fn new_external(cmd: &crate::Command) -> Self {
let ignore_case = false;
Self {
source: None,
indices: Vec::new(),
type_id: Some(
cmd.get_external_subcommand_value_parser()
.expect(INTERNAL_ERROR_MSG)
.type_id(),
),
vals: Vec::new(),
raw_vals: Vec::new(),
ignore_case,
}
}
pub(crate) fn indices(&self) -> Cloned<Iter<'_, usize>> {
self.indices.iter().cloned()
}
pub(crate) fn get_index(&self, index: usize) -> Option<usize> {
self.indices.get(index).cloned()
}
pub(crate) fn push_index(&mut self, index: usize) {
self.indices.push(index);
}
pub(crate) fn vals(&self) -> Iter<'_, Vec<AnyValue>> {
self.vals.iter()
}
pub(crate) fn into_vals(self) -> Vec<Vec<AnyValue>> {
self.vals
}
pub(crate) fn vals_flatten(&self) -> Flatten<Iter<'_, Vec<AnyValue>>> {
self.vals.iter().flatten()
}
pub(crate) fn into_vals_flatten(self) -> Flatten<std::vec::IntoIter<Vec<AnyValue>>> {
self.vals.into_iter().flatten()
}
pub(crate) fn raw_vals(&self) -> Iter<'_, Vec<OsString>> {
self.raw_vals.iter()
}
pub(crate) fn raw_vals_flatten(&self) -> Flatten<Iter<'_, Vec<OsString>>> {
self.raw_vals.iter().flatten()
}
pub(crate) fn first(&self) -> Option<&AnyValue> {
self.vals_flatten().next()
}
#[cfg(test)]
pub(crate) fn first_raw(&self) -> Option<&OsString> {
self.raw_vals_flatten().next()
}
pub(crate) fn new_val_group(&mut self) {
self.vals.push(vec![]);
self.raw_vals.push(vec![]);
}
pub(crate) fn append_val(&mut self, val: AnyValue, raw_val: OsString) {
// We assume there is always a group created before.
self.vals.last_mut().expect(INTERNAL_ERROR_MSG).push(val);
self.raw_vals
.last_mut()
.expect(INTERNAL_ERROR_MSG)
.push(raw_val);
}
pub(crate) fn num_vals(&self) -> usize {
self.vals.iter().map(|v| v.len()).sum()
}
// Will be used later
#[allow(dead_code)]
pub(crate) fn num_vals_last_group(&self) -> usize {
self.vals.last().map(|x| x.len()).unwrap_or(0)
}
pub(crate) fn all_val_groups_empty(&self) -> bool {
self.vals.iter().flatten().count() == 0
}
pub(crate) fn check_explicit(&self, predicate: &ArgPredicate) -> bool {
if self.source.map(|s| !s.is_explicit()).unwrap_or(false) {
return false;
}
match predicate {
ArgPredicate::Equals(val) => self.raw_vals_flatten().any(|v| {
if self.ignore_case {
// If `v` isn't utf8, it can't match `val`, so `OsStr::to_str` should be fine
eq_ignore_case(&v.to_string_lossy(), &val.to_string_lossy())
} else {
OsString::as_os_str(v) == OsStr::new(val)
}
}),
ArgPredicate::IsPresent => true,
}
}
pub(crate) fn source(&self) -> Option<ValueSource> {
self.source
}
pub(crate) fn set_source(&mut self, source: ValueSource) {
if let Some(existing) = self.source {
self.source = Some(existing.max(source));
} else {
self.source = Some(source);
}
}
pub(crate) fn type_id(&self) -> Option<AnyValueId> {
self.type_id
}
pub(crate) fn infer_type_id(&self, expected: AnyValueId) -> AnyValueId {
self.type_id()
.or_else(|| {
self.vals_flatten()
.map(|v| v.type_id())
.find(|actual| *actual != expected)
})
.unwrap_or(expected)
}
}
impl PartialEq for MatchedArg {
fn eq(&self, other: &MatchedArg) -> bool {
let MatchedArg {
source: self_source,
indices: self_indices,
type_id: self_type_id,
vals: _,
raw_vals: self_raw_vals,
ignore_case: self_ignore_case,
} = self;
let MatchedArg {
source: other_source,
indices: other_indices,
type_id: other_type_id,
vals: _,
raw_vals: other_raw_vals,
ignore_case: other_ignore_case,
} = other;
self_source == other_source
&& self_indices == other_indices
&& self_type_id == other_type_id
&& self_raw_vals == other_raw_vals
&& self_ignore_case == other_ignore_case
}
}
impl Eq for MatchedArg {}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_grouped_vals_first() {
let mut m = MatchedArg::new_group();
m.new_val_group();
m.new_val_group();
m.append_val(AnyValue::new(String::from("bbb")), "bbb".into());
m.append_val(AnyValue::new(String::from("ccc")), "ccc".into());
assert_eq!(m.first_raw(), Some(&OsString::from("bbb")));
}
}