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use super::*;
/// A pointer to a null-terminated string of 8-bit Windows (ANSI) characters.
#[repr(transparent)]
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub struct PSTR(pub *mut u8);
impl PSTR {
/// Construct a new `PSTR` from a raw pointer
pub const fn from_raw(ptr: *mut u8) -> Self {
Self(ptr)
}
/// Construct a null `PSTR`
pub const fn null() -> Self {
Self(core::ptr::null_mut())
}
/// Returns a raw pointer to the `PSTR`
pub const fn as_ptr(&self) -> *mut u8 {
self.0
}
/// Checks whether the `PSTR` is null
pub fn is_null(&self) -> bool {
self.0.is_null()
}
/// String data without the trailing 0
///
/// # Safety
///
/// The `PSTR`'s pointer needs to be valid for reads up until and including the next `\0`.
pub unsafe fn as_bytes(&self) -> &[u8] {
unsafe {
let len = strlen(PCSTR::from_raw(self.0));
core::slice::from_raw_parts(self.0, len)
}
}
/// Copy the `PSTR` into a Rust `String`.
///
/// # Safety
///
/// See the safety information for `PSTR::as_bytes`.
pub unsafe fn to_string(&self) -> core::result::Result<String, alloc::string::FromUtf8Error> {
unsafe { String::from_utf8(self.as_bytes().into()) }
}
/// Allow this string to be displayed.
///
/// # Safety
///
/// See the safety information for `PSTR::as_bytes`.
pub unsafe fn display(&self) -> impl core::fmt::Display + '_ {
unsafe { Decode(move || decode_utf8(self.as_bytes())) }
}
}
impl Default for PSTR {
fn default() -> Self {
Self::null()
}
}