Function _getfullpathname

crates/vm/src/stdlib/nt.rs:1341–1373

(path: OsPath, vm: &VirtualMachine)

    #[pyfunction]
    fn _getfullpathname(path: OsPath, vm: &VirtualMachine) -> PyResult {
        let wpath = path.to_wide_cstring(vm)?;
        let mut buffer = vec![0u16; Foundation::MAX_PATH as usize];
        let ret = unsafe {
            FileSystem::GetFullPathNameW(
                wpath.as_ptr(),
                buffer.len() as _,
                buffer.as_mut_ptr(),
                core::ptr::null_mut(),
            )
        };
        if ret == 0 {
            let err = io::Error::last_os_error();
            return Err(OSErrorBuilder::with_filename(&err, path.clone(), vm));
        }
        if ret as usize > buffer.len() {
            buffer.resize(ret as usize, 0);
            let ret = unsafe {
                FileSystem::GetFullPathNameW(
                    wpath.as_ptr(),
                    buffer.len() as _,
                    buffer.as_mut_ptr(),
                    core::ptr::null_mut(),
                )
            };
            if ret == 0 {
                let err = io::Error::last_os_error();
                return Err(OSErrorBuilder::with_filename(&err, path.clone(), vm));
            }
        }
        let buffer = widestring::WideCString::from_vec_truncate(buffer);
        Ok(path.mode().process_path(buffer.to_os_string(), vm))
    }

    #[pyfunction]
    fn _getvolumepathname(path: OsPath, vm: &VirtualMachine) -> PyResult {