xcp 0.12.4

xcp is an experimental and incomplete clone of the Unix `cp` command, with some more user-friendly feedback and some performance optimisations. NOTE: See the README for current limitations.
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/*
 * Copyright © 2018, Steve Smith <tarkasteve@gmail.com>
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 3 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

use std::fs;
use std::path::{Path, PathBuf};

pub enum FileType {
    File,
    Dir,
    Symlink,
    Unknown,
}

pub trait ToFileType {
    fn to_enum(self) -> FileType;
}

fn to_enum(ft: fs::FileType) -> FileType {
    if ft.is_dir() {
        FileType::Dir
    } else if ft.is_file() {
        FileType::File
    } else if ft.is_symlink() {
        FileType::Symlink
    } else {
        FileType::Unknown
    }
}

impl ToFileType for fs::FileType {
    fn to_enum(self) -> FileType {
        to_enum(self)
    }
}

pub fn empty(path: &Path) -> bool {
    *path == PathBuf::new()
}