Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 256 insertions, 0 deletions

diff --git a/third_party/rust/unix_str/src/sys.rs b/third_party/rust/unix_str/src/sys.rs
new file mode 100644
index 0000000000..cf1de79ee4
--- /dev/null
+++ b/third_party/rust/unix_str/src/sys.rs
@@ -0,0 +1,256 @@
+//! The underlying UnixString/UnixStr implementation: just a `Vec<u8>`/`[u8]`.
+
+use crate::sys_common::bytestring::debug_fmt_bytestring;
+#[cfg(feature = "alloc")]
+use crate::sys_common::{AsInner, IntoInner};
+use core::fmt;
+use core::mem;
+use core::str;
+
+#[cfg(feature = "alloc")]
+use alloc::borrow::Cow;
+#[cfg(feature = "alloc")]
+use alloc::boxed::Box;
+#[cfg(feature = "alloc")]
+use alloc::rc::Rc;
+#[cfg(feature = "alloc")]
+use alloc::string::String;
+#[cfg(feature = "alloc")]
+use alloc::sync::Arc;
+#[cfg(feature = "alloc")]
+use alloc::vec::Vec;
+
+#[cfg(all(feature = "alloc", feature = "toowned_clone_into"))]
+use alloc::borrow::ToOwned;
+
+#[cfg(feature = "alloc")]
+#[derive(Clone, Hash)]
+pub(crate) struct Buf {
+    pub inner: Vec<u8>,
+}
+
+// FIXME:
+// `Buf::as_slice` current implementation relies
+// on `Slice` being layout-compatible with `[u8]`.
+// When attribute privacy is implemented, `Slice` should be annotated as `#[repr(transparent)]`.
+// Anyway, `Slice` representation and layout are considered implementation detail, are
+// not documented and must not be relied upon.
+pub(crate) struct Slice {
+    pub inner: [u8],
+}
+
+impl fmt::Debug for Slice {
+    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
+        debug_fmt_bytestring(&self.inner, formatter)
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl IntoInner<Vec<u8>> for Buf {
+    fn into_inner(self) -> Vec<u8> {
+        self.inner
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl AsInner<[u8]> for Buf {
+    fn as_inner(&self) -> &[u8] {
+        &self.inner
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl Buf {
+    pub fn from_string(s: String) -> Self {
+        Self {
+            inner: s.into_bytes(),
+        }
+    }
+
+    #[inline]
+    pub fn with_capacity(capacity: usize) -> Self {
+        Buf {
+            inner: Vec::with_capacity(capacity),
+        }
+    }
+
+    #[inline]
+    pub fn clear(&mut self) {
+        self.inner.clear()
+    }
+
+    #[inline]
+    pub fn capacity(&self) -> usize {
+        self.inner.capacity()
+    }
+
+    #[inline]
+    pub fn reserve(&mut self, additional: usize) {
+        self.inner.reserve(additional)
+    }
+
+    #[inline]
+    pub fn reserve_exact(&mut self, additional: usize) {
+        self.inner.reserve_exact(additional)
+    }
+
+    #[inline]
+    pub fn shrink_to_fit(&mut self) {
+        self.inner.shrink_to_fit()
+    }
+
+    #[inline]
+    #[cfg(feature = "shrink_to")]
+    pub fn shrink_to(&mut self, min_capacity: usize) {
+        self.inner.shrink_to(min_capacity)
+    }
+
+    #[inline]
+    pub fn as_slice(&self) -> &Slice {
+        // Safety: Slice just wraps [u8],
+        // and &*self.inner is &[u8], therefore
+        // transmuting &[u8] to &Slice is safe.
+        unsafe { mem::transmute(&*self.inner) }
+    }
+
+    #[inline]
+    pub fn as_mut_slice(&mut self) -> &mut Slice {
+        // Safety: Slice just wraps [u8],
+        // and &mut *self.inner is &mut [u8], therefore
+        // transmuting &mut [u8] to &mut Slice is safe.
+        unsafe { mem::transmute(&mut *self.inner) }
+    }
+
+    pub fn into_string(self) -> Result<String, Self> {
+        String::from_utf8(self.inner).map_err(|p| Self {
+            inner: p.into_bytes(),
+        })
+    }
+
+    pub fn push_slice(&mut self, s: &Slice) {
+        self.inner.extend_from_slice(&s.inner)
+    }
+
+    #[inline]
+    pub fn into_box(self) -> Box<Slice> {
+        unsafe { mem::transmute(self.inner.into_boxed_slice()) }
+    }
+
+    #[inline]
+    pub fn from_box(boxed: Box<Slice>) -> Self {
+        let inner: Box<[u8]> = unsafe { mem::transmute(boxed) };
+        Self {
+            inner: inner.into_vec(),
+        }
+    }
+
+    #[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]
+    fn from_u8_slice(s: &[u8]) -> &Self {
+        unsafe { mem::transmute(s) }
+    }
+
+    #[inline]
+    pub fn from_str(s: &str) -> &Self {
+        Self::from_u8_slice(s.as_bytes())
+    }
+
+    pub fn to_str(&self) -> Option<&str> {
+        str::from_utf8(&self.inner).ok()
+    }
+
+    #[cfg(feature = "alloc")]
+    pub fn to_string_lossy(&self) -> Cow<'_, str> {
+        String::from_utf8_lossy(&self.inner)
+    }
+
+    #[cfg(feature = "alloc")]
+    pub fn to_owned(&self) -> Buf {
+        Buf {
+            inner: self.inner.to_vec(),
+        }
+    }
+
+    #[cfg(all(feature = "alloc", feature = "toowned_clone_into"))]
+    pub fn clone_into(&self, buf: &mut Buf) {
+        self.inner.clone_into(&mut buf.inner)
+    }
+
+    #[inline]
+    #[cfg(feature = "alloc")]
+    pub fn into_box(&self) -> Box<Self> {
+        let boxed: Box<[u8]> = self.inner.into();
+        unsafe { mem::transmute(boxed) }
+    }
+
+    #[cfg(feature = "alloc")]
+    pub fn empty_box() -> Box<Self> {
+        let boxed: Box<[u8]> = Default::default();
+        unsafe { mem::transmute(boxed) }
+    }
+
+    #[inline]
+    #[cfg(feature = "alloc")]
+    pub fn into_arc(&self) -> Arc<Self> {
+        let arc: Arc<[u8]> = Arc::from(&self.inner);
+        unsafe { Arc::from_raw(Arc::into_raw(arc) as *const Self) }
+    }
+
+    #[inline]
+    #[cfg(feature = "alloc")]
+    pub fn into_rc(&self) -> Rc<Self> {
+        let rc: Rc<[u8]> = Rc::from(&self.inner);
+        unsafe { Rc::from_raw(Rc::into_raw(rc) as *const Self) }
+    }
+
+    #[inline]
+    #[cfg(feature = "unixstring_ascii")]
+    pub fn make_ascii_lowercase(&mut self) {
+        self.inner.make_ascii_lowercase()
+    }
+
+    #[inline]
+    #[cfg(feature = "unixstring_ascii")]
+    pub fn make_ascii_uppercase(&mut self) {
+        self.inner.make_ascii_uppercase()
+    }
+
+    #[inline]
+    #[cfg(all(feature = "alloc", feature = "unixstring_ascii"))]
+    pub fn to_ascii_lowercase(&self) -> Buf {
+        Buf {
+            inner: self.inner.to_ascii_lowercase(),
+        }
+    }
+
+    #[inline]
+    #[cfg(all(feature = "alloc", feature = "unixstring_ascii"))]
+    pub fn to_ascii_uppercase(&self) -> Buf {
+        Buf {
+            inner: self.inner.to_ascii_uppercase(),
+        }
+    }
+
+    #[inline]
+    #[cfg(feature = "unixstring_ascii")]
+    pub fn is_ascii(&self) -> bool {
+        self.inner.is_ascii()
+    }
+
+    #[inline]
+    #[cfg(feature = "unixstring_ascii")]
+    pub fn eq_ignore_ascii_case(&self, other: &Self) -> bool {
+        self.inner.eq_ignore_ascii_case(&other.inner)
+    }
+}