Function _findfirstfile

crates/vm/src/stdlib/nt.rs:413–444

(path: OsPath, vm: &VirtualMachine)

    /// Uses FindFirstFileW to get the name as stored on the filesystem.
    #[pyfunction]
    fn _findfirstfile(path: OsPath, vm: &VirtualMachine) -> PyResult<PyStrRef> {
        use crate::common::windows::ToWideString;
        use std::os::windows::ffi::OsStringExt;
        use windows_sys::Win32::Storage::FileSystem::{
            FindClose, FindFirstFileW, WIN32_FIND_DATAW,
        };

        let wide_path = path.as_ref().to_wide_with_nul();
        let mut find_data: WIN32_FIND_DATAW = unsafe { core::mem::zeroed() };

        let handle = unsafe { FindFirstFileW(wide_path.as_ptr(), &mut find_data) };
        if handle == INVALID_HANDLE_VALUE {
            let err = io::Error::last_os_error();
            return Err(OSErrorBuilder::with_filename(&err, path, vm));
        }

        unsafe { FindClose(handle) };

        // Convert the filename from the find data to a Rust string
        // cFileName is a null-terminated wide string
        let len = find_data
            .cFileName
            .iter()
            .position(|&c| c == 0)
            .unwrap_or(find_data.cFileName.len());
        let filename = std::ffi::OsString::from_wide(&find_data.cFileName[..len]);
        let filename_str = filename
            .to_str()
            .ok_or_else(|| vm.new_unicode_decode_error("filename contains invalid UTF-8"))?;

        Ok(vm.ctx.new_str(filename_str).to_owned())
    }

    #[derive(FromArgs)]
    struct PathArg {