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|
/// The underlying OsString/OsStr implementation on Windows is a
/// wrapper around the "WTF-8" encoding; see the `wtf8` module for more.
use crate::borrow::Cow;
use crate::collections::TryReserveError;
use crate::fmt;
use crate::mem;
use crate::rc::Rc;
use crate::sync::Arc;
use crate::sys_common::wtf8::{Wtf8, Wtf8Buf};
use crate::sys_common::{AsInner, FromInner, IntoInner};
#[derive(Clone, Hash)]
pub struct Buf {
pub inner: Wtf8Buf,
}
impl IntoInner<Wtf8Buf> for Buf {
fn into_inner(self) -> Wtf8Buf {
self.inner
}
}
impl FromInner<Wtf8Buf> for Buf {
fn from_inner(inner: Wtf8Buf) -> Self {
Buf { inner }
}
}
impl AsInner<Wtf8> for Buf {
fn as_inner(&self) -> &Wtf8 {
&self.inner
}
}
impl fmt::Debug for Buf {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self.as_slice(), formatter)
}
}
impl fmt::Display for Buf {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(self.as_slice(), formatter)
}
}
#[repr(transparent)]
pub struct Slice {
pub inner: Wtf8,
}
impl fmt::Debug for Slice {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&self.inner, formatter)
}
}
impl fmt::Display for Slice {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&self.inner, formatter)
}
}
impl Buf {
pub fn with_capacity(capacity: usize) -> Buf {
Buf { inner: Wtf8Buf::with_capacity(capacity) }
}
pub fn clear(&mut self) {
self.inner.clear()
}
pub fn capacity(&self) -> usize {
self.inner.capacity()
}
pub fn from_string(s: String) -> Buf {
Buf { inner: Wtf8Buf::from_string(s) }
}
pub fn as_slice(&self) -> &Slice {
// SAFETY: Slice is just a wrapper for Wtf8,
// and self.inner.as_slice() returns &Wtf8.
// Therefore, transmuting &Wtf8 to &Slice is safe.
unsafe { mem::transmute(self.inner.as_slice()) }
}
pub fn as_mut_slice(&mut self) -> &mut Slice {
// SAFETY: Slice is just a wrapper for Wtf8,
// and self.inner.as_mut_slice() returns &mut Wtf8.
// Therefore, transmuting &mut Wtf8 to &mut Slice is safe.
// Additionally, care should be taken to ensure the slice
// is always valid Wtf8.
unsafe { mem::transmute(self.inner.as_mut_slice()) }
}
pub fn into_string(self) -> Result<String, Buf> {
self.inner.into_string().map_err(|buf| Buf { inner: buf })
}
pub fn push_slice(&mut self, s: &Slice) {
self.inner.push_wtf8(&s.inner)
}
pub fn reserve(&mut self, additional: usize) {
self.inner.reserve(additional)
}
pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> {
self.inner.try_reserve(additional)
}
pub fn reserve_exact(&mut self, additional: usize) {
self.inner.reserve_exact(additional)
}
pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> {
self.inner.try_reserve_exact(additional)
}
pub fn shrink_to_fit(&mut self) {
self.inner.shrink_to_fit()
}
#[inline]
pub fn shrink_to(&mut self, min_capacity: usize) {
self.inner.shrink_to(min_capacity)
}
#[inline]
pub fn into_box(self) -> Box<Slice> {
unsafe { mem::transmute(self.inner.into_box()) }
}
#[inline]
pub fn from_box(boxed: Box<Slice>) -> Buf {
let inner: Box<Wtf8> = unsafe { mem::transmute(boxed) };
Buf { inner: Wtf8Buf::from_box(inner) }
}
#[inline]
pub fn into_arc(&self) -> Arc<Slice> {
self.as_slice().into_arc()
}
#[inline]
pub fn into_rc(&self) -> Rc<Slice> {
self.as_slice().into_rc()
}
}
impl Slice {
#[inline]
pub fn from_str(s: &str) -> &Slice {
unsafe { mem::transmute(Wtf8::from_str(s)) }
}
pub fn to_str(&self) -> Option<&str> {
self.inner.as_str()
}
pub fn to_string_lossy(&self) -> Cow<'_, str> {
self.inner.to_string_lossy()
}
pub fn to_owned(&self) -> Buf {
Buf { inner: self.inner.to_owned() }
}
pub fn clone_into(&self, buf: &mut Buf) {
self.inner.clone_into(&mut buf.inner)
}
#[inline]
pub fn into_box(&self) -> Box<Slice> {
unsafe { mem::transmute(self.inner.into_box()) }
}
pub fn empty_box() -> Box<Slice> {
unsafe { mem::transmute(Wtf8::empty_box()) }
}
#[inline]
pub fn into_arc(&self) -> Arc<Slice> {
let arc = self.inner.into_arc();
unsafe { Arc::from_raw(Arc::into_raw(arc) as *const Slice) }
}
#[inline]
pub fn into_rc(&self) -> Rc<Slice> {
let rc = self.inner.into_rc();
unsafe { Rc::from_raw(Rc::into_raw(rc) as *const Slice) }
}
#[inline]
pub fn make_ascii_lowercase(&mut self) {
self.inner.make_ascii_lowercase()
}
#[inline]
pub fn make_ascii_uppercase(&mut self) {
self.inner.make_ascii_uppercase()
}
#[inline]
pub fn to_ascii_lowercase(&self) -> Buf {
Buf { inner: self.inner.to_ascii_lowercase() }
}
#[inline]
pub fn to_ascii_uppercase(&self) -> Buf {
Buf { inner: self.inner.to_ascii_uppercase() }
}
#[inline]
pub fn is_ascii(&self) -> bool {
self.inner.is_ascii()
}
#[inline]
pub fn eq_ignore_ascii_case(&self, other: &Self) -> bool {
self.inner.eq_ignore_ascii_case(&other.inner)
}
}
|
