Function resolve_file_download_target

crates/openshell-cli/src/ssh.rs:924–936

Resolve the host-side target path for a downloaded *file*, following `cp`-style semantics. - If `dest_str` ends with `/` or already exists as a directory, the file is placed inside it as ` / `. - Otherwise `dest_str` is treated as the exact file path to write. `dest_exists_as_dir` is taken as a parameter (rather than queried inside) so this function stays pure and unit-testa

(
    dest_str: &str,
    source_basename: &str,
    dest_exists_as_dir: bool,
)

/// so this function stays pure and unit-testable; the caller performs the
/// filesystem check.
fn resolve_file_download_target(
    dest_str: &str,
    source_basename: &str,
    dest_exists_as_dir: bool,
) -> PathBuf {
    let trailing_slash = dest_str.ends_with('/');
    let dest_path = Path::new(dest_str);
    if trailing_slash || dest_exists_as_dir {
        dest_path.join(source_basename)
    } else {
        dest_path.to_path_buf()
    }
}

/// Push a list of files from a local directory into a sandbox using tar-over-SSH.
///