4d7ca2a448
Update the `windows` Microsoft Windows binding crate to 0.58.
- Update `taskcluster/kinds/fetch/toolchains.yml` to request version
0.58 of the `windows` crate.
- Update `build/rust/windows/Cargo.toml` to present itself as 0.58.
- Vendor the following new crates into `third_party/rust`:
- windows-core
- windows-implement
- windows-interface
- windows-result
- windows-strings
- Update `supply-chain/imports.lock` as necessary.
Differential Revision: https://phabricator.services.mozilla.com/D218694
57 lines
1.5 KiB
Rust
57 lines
1.5 KiB
Rust
use super::*;
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/// A pointer to a constant null-terminated string of 8-bit Windows (ANSI) characters.
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#[repr(transparent)]
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#[derive(Clone, Copy, PartialEq, Eq, Debug)]
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pub struct PCSTR(pub *const u8);
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impl PCSTR {
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/// Construct a new `PCSTR` from a raw pointer
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pub const fn from_raw(ptr: *const u8) -> Self {
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Self(ptr)
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}
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/// Construct a null `PCSTR`
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pub const fn null() -> Self {
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Self(core::ptr::null())
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}
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/// Returns a raw pointer to the `PCSTR`
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pub const fn as_ptr(&self) -> *const u8 {
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self.0
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}
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/// Checks whether the `PCSTR` is null
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pub fn is_null(&self) -> bool {
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self.0.is_null()
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}
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/// String data without the trailing 0
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///
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/// # Safety
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///
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/// The `PCSTR`'s pointer needs to be valid for reads up until and including the next `\0`.
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pub unsafe fn as_bytes(&self) -> &[u8] {
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let len = strlen(*self);
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core::slice::from_raw_parts(self.0, len)
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}
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/// Copy the `PCSTR` into a Rust `String`.
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///
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/// # Safety
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///
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/// See the safety information for `PCSTR::as_bytes`.
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pub unsafe fn to_string(&self) -> core::result::Result<String, alloc::string::FromUtf8Error> {
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String::from_utf8(self.as_bytes().into())
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}
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/// Allow this string to be displayed.
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///
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/// # Safety
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///
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/// See the safety information for `PCSTR::as_bytes`.
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pub unsafe fn display(&self) -> impl core::fmt::Display + '_ {
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Decode(move || decode_utf8(self.as_bytes()))
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}
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}
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