pub trait Arg {
// Required methods
fn as_str(&self) -> Result<&str>;
fn to_string_lossy(&self) -> Cow<'_, str>;
fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>>;
fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>>
where Self: 'b;
fn into_with_c_str<T, F>(self, f: F) -> Result<T>
where Self: Sized,
F: FnOnce(&CStr) -> Result<T>;
}Expand description
A trait for passing path arguments.
This is similar to AsRef<Path>, but is implemented for more
kinds of strings and can convert into more kinds of strings.
Example
use rustix::ffi::CStr;
use rustix::io;
use rustix::path::Arg;
pub fn touch<P: Arg>(path: P) -> io::Result<()> {
let path = path.into_c_str()?;
_touch(&path)
}
fn _touch(path: &CStr) -> io::Result<()> {
// implementation goes here
Ok(())
}Users can then call touch("foo"), touch(cstr!("foo")),
touch(Path::new("foo")), or many other things.
Required Methods§
sourcefn to_string_lossy(&self) -> Cow<'_, str>
fn to_string_lossy(&self) -> Cow<'_, str>
Returns a potentially-lossy rendering of this string as a Cow<'_, str>.
sourcefn as_cow_c_str(&self) -> Result<Cow<'_, CStr>>
fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>>
Returns a view of this string as a maybe-owned CStr.