forked from bonsai/harakit
90 lines
3.7 KiB
Rust
90 lines
3.7 KiB
Rust
/*
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* Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU Affero General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/.
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*
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* This file incorporates work covered by the following copyright and permission
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* notice:
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* The Clear BSD License
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*
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* Copyright © 2017-2023 David Wildasin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted (subject to the limitations in the disclaimer
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* below) provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions, and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
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* BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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use std::fmt;
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/// A single option.
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///
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/// For `Opt(x, y)`:
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/// - `x` is the character representing the option.
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/// - `y` is `Some` string, or `None` if no argument was expected.
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///
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/// # Example
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///
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/// ```
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/// # fn main() -> Result<(), Box<dyn std::error::Error>> {
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/// use getopt::Opt;
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///
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/// // args = ["program", "-abc", "foo"];
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/// # let args: Vec<String> = vec!["program", "-abc", "foo"]
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/// # .into_iter()
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/// # .map(String::from)
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/// # .collect();
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/// let optstring = "ab:c";
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/// let mut opts = getopt::Parser::new(&args, optstring);
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///
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/// assert_eq!(Opt('a', None), opts.next().transpose()?.unwrap());
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/// assert_eq!(Opt('b', Some("c".to_string())), opts.next().transpose()?.unwrap());
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/// assert_eq!(None, opts.next().transpose()?);
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/// # Ok(())
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/// # }
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/// ```
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#[derive(Debug, Eq, Ord, PartialEq, PartialOrd)]
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pub struct Opt(pub char, pub Option<String>);
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impl fmt::Display for Opt {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "Opt({:?}, {:?})", self.0, self.1)
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}
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}
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