Function listvolumes

crates/vm/src/stdlib/nt.rs:1850–1881

(vm: &VirtualMachine)

    #[pyfunction]
    fn listvolumes(vm: &VirtualMachine) -> PyResult<PyListRef> {
        use windows_sys::Win32::Foundation::ERROR_NO_MORE_FILES;

        let mut result = Vec::new();
        let mut buffer = [0u16; Foundation::MAX_PATH as usize + 1];

        let find = unsafe { FileSystem::FindFirstVolumeW(buffer.as_mut_ptr(), buffer.len() as _) };
        if find == INVALID_HANDLE_VALUE {
            return Err(vm.new_last_os_error());
        }

        loop {
            // Find the null terminator
            let len = buffer.iter().position(|&c| c == 0).unwrap_or(buffer.len());
            let volume = String::from_utf16_lossy(&buffer[..len]);
            result.push(vm.new_pyobj(volume));

            let ret = unsafe {
                FileSystem::FindNextVolumeW(find, buffer.as_mut_ptr(), buffer.len() as _)
            };
            if ret == 0 {
                let err = io::Error::last_os_error();
                unsafe { FileSystem::FindVolumeClose(find) };
                if err.raw_os_error() == Some(ERROR_NO_MORE_FILES as i32) {
                    break;
                }
                return Err(err.to_pyexception(vm));
            }
        }

        Ok(vm.ctx.new_list(result))
    }

    #[pyfunction]
    fn listmounts(volume: OsPath, vm: &VirtualMachine) -> PyResult<PyListRef> {