pub trait StartsWithIgnoreAsciiCaseMultiple {
fn starts_with_ignore_ascii_case_multiple<S: AsRef<[u8]>>(&self, bs: &[S]) -> Option<usize>;
fn starts_with_ignore_ascii_case_with_lowercase_multiple<S: AsRef<[u8]>>(
&self,
bs: &[S],
) -> Option<usize>;
fn starts_with_ignore_ascii_case_with_uppercase_multiple<S: AsRef<[u8]>>(
&self,
bs: &[S],
) -> Option<usize>;
}
impl<T: AsRef<[u8]>> StartsWithIgnoreAsciiCaseMultiple for T {
#[inline]
fn starts_with_ignore_ascii_case_multiple<S: AsRef<[u8]>>(&self, bs: &[S]) -> Option<usize> {
let a = self.as_ref();
let a_length = a.len();
for (i, b) in bs.iter().enumerate() {
let b = b.as_ref();
let b_length = b.len();
if a_length < b_length {
continue;
}
if unsafe { a.get_unchecked(..b_length) }.eq_ignore_ascii_case(b) {
return Some(i);
}
}
None
}
#[inline]
fn starts_with_ignore_ascii_case_with_lowercase_multiple<S: AsRef<[u8]>>(
&self,
bs: &[S],
) -> Option<usize> {
let a = self.as_ref();
let a_length = a.len();
for (i, b) in bs.iter().enumerate() {
let b = b.as_ref();
debug_assert!(!b.iter().any(|e| e.is_ascii_uppercase()));
let b_length = b.len();
if a_length < b_length {
continue;
}
if !unsafe { a.get_unchecked(..b_length) }
.iter()
.map(|e| e.to_ascii_lowercase())
.zip(b.iter().copied())
.any(|(ac, bc)| ac != bc)
{
return Some(i);
}
}
None
}
#[inline]
fn starts_with_ignore_ascii_case_with_uppercase_multiple<S: AsRef<[u8]>>(
&self,
bs: &[S],
) -> Option<usize> {
let a = self.as_ref();
let a_length = a.len();
for (i, b) in bs.iter().enumerate() {
let b = b.as_ref();
debug_assert!(!b.iter().any(|e| e.is_ascii_lowercase()));
let b_length = b.len();
if a_length < b_length {
continue;
}
if !unsafe { a.get_unchecked(..b_length) }
.iter()
.map(|e| e.to_ascii_uppercase())
.zip(b.iter().copied())
.any(|(ac, bc)| ac != bc)
{
return Some(i);
}
}
None
}
}