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// Copyright 2019 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the
// Software without restriction, including without
// limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
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use globset::{GlobBuilder, GlobMatcher};
use log::warn;
use std::{fmt, hash};
/// Pattern that can be matched to string.
pub trait Pattern {
/// Returns true if given string matches the pattern.
fn matches<T: AsRef<str>>(&self, other: T) -> bool;
}
#[derive(Clone)]
pub struct Matcher(Option<GlobMatcher>, String);
impl Matcher {
pub fn new(string: &str) -> Matcher {
Matcher(
GlobBuilder::new(string)
.case_insensitive(true)
.build()
.map(|g| g.compile_matcher())
.map_err(|e| warn!("Invalid glob pattern for {}: {:?}", string, e))
.ok(),
string.into(),
)
}
}
impl Pattern for Matcher {
fn matches<T: AsRef<str>>(&self, other: T) -> bool {
let s = other.as_ref();
match self.0 {
Some(ref matcher) => matcher.is_match(s),
None => self.1.eq_ignore_ascii_case(s),
}
}
}
impl fmt::Debug for Matcher {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{:?} ({})", self.1, self.0.is_some())
}
}
impl hash::Hash for Matcher {
fn hash<H>(&self, state: &mut H)
where
H: hash::Hasher,
{
self.1.hash(state)
}
}
impl Eq for Matcher {}
impl PartialEq for Matcher {
fn eq(&self, other: &Matcher) -> bool {
self.1.eq(&other.1)
}
}