1 files changed, 97 insertions, 0 deletions
diff --git a/vendor/windows-strings/src/pcwstr.rs b/vendor/windows-strings/src/pcwstr.rs
new file mode 100644
index 00000000..221bfd9b
--- /dev/null
+++ b/vendor/windows-strings/src/pcwstr.rs
@@ -0,0 +1,97 @@
+use super::*;
+
+/// A pointer to a constant null-terminated string of 16-bit Unicode characters.
+#[repr(transparent)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+pub struct PCWSTR(pub *const u16);
+
+impl PCWSTR {
+    /// Construct a new `PCWSTR` from a raw pointer
+    pub const fn from_raw(ptr: *const u16) -> Self {
+        Self(ptr)
+    }
+
+    /// Construct a null `PCWSTR`
+    pub const fn null() -> Self {
+        Self(core::ptr::null())
+    }
+
+    /// Returns a raw pointer to the `PCWSTR`
+    pub const fn as_ptr(&self) -> *const u16 {
+        self.0
+    }
+
+    /// Checks whether the `PCWSTR` is null
+    pub fn is_null(&self) -> bool {
+        self.0.is_null()
+    }
+
+    /// String length without the trailing 0
+    ///
+    /// # Safety
+    ///
+    /// The `PCWSTR`'s pointer needs to be valid for reads up until and including the next `\0`.
+    pub unsafe fn len(&self) -> usize {
+        extern "C" {
+            fn wcslen(s: *const u16) -> usize;
+        }
+        unsafe { wcslen(self.0) }
+    }
+
+    /// Returns `true` if the string length is zero, and `false` otherwise.
+    ///
+    /// # Safety
+    ///
+    /// The `PCWSTR`'s pointer needs to be valid for reads up until and including the next `\0`.
+    pub unsafe fn is_empty(&self) -> bool {
+        unsafe { self.len() == 0 }
+    }
+
+    /// String data without the trailing 0
+    ///
+    /// # Safety
+    ///
+    /// The `PCWSTR`'s pointer needs to be valid for reads up until and including the next `\0`.
+    pub unsafe fn as_wide(&self) -> &[u16] {
+        unsafe { core::slice::from_raw_parts(self.0, self.len()) }
+    }
+
+    /// Copy the `PCWSTR` into a Rust `String`.
+    ///
+    /// # Safety
+    ///
+    /// See the safety information for `PCWSTR::as_wide`.
+    pub unsafe fn to_string(&self) -> core::result::Result<String, alloc::string::FromUtf16Error> {
+        unsafe { String::from_utf16(self.as_wide()) }
+    }
+
+    /// Copy the `PCWSTR` into an `HSTRING`.
+    ///
+    /// # Safety
+    ///
+    /// See the safety information for `PCWSTR::as_wide`.
+    pub unsafe fn to_hstring(&self) -> HSTRING {
+        unsafe { HSTRING::from_wide(self.as_wide()) }
+    }
+
+    /// Allow this string to be displayed.
+    ///
+    /// # Safety
+    ///
+    /// See the safety information for `PCWSTR::as_wide`.
+    pub unsafe fn display(&self) -> impl core::fmt::Display + '_ {
+        unsafe { Decode(move || core::char::decode_utf16(self.as_wide().iter().cloned())) }
+    }
+}
+
+impl Default for PCWSTR {
+    fn default() -> Self {
+        Self::null()
+    }
+}
+
+impl AsRef<PCWSTR> for PCWSTR {
+    fn as_ref(&self) -> &Self {
+        self
+    }
+}