62 lines
2 KiB
Rust
62 lines
2 KiB
Rust
//
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// imag - the personal information management suite for the commandline
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// Copyright (C) 2015-2018 the imag contributors
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; version
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// 2.1 of the License.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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//
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use std::io::ErrorKind;
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use exit::ExitCode;
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pub enum Settings {
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Ignore(ErrorKind),
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IgnoreAny(Vec<ErrorKind>),
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}
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pub trait ToExitCode<T> {
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fn to_exit_code(self) -> Result<T, ExitCode>;
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fn to_exit_code_with(self, Settings) -> Result<T, ExitCode>;
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}
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impl<T> ToExitCode<T> for Result<T, ::std::io::Error> {
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/// Returns an exit code of 0 if the error was a broken pipe, else 1
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fn to_exit_code(self) -> Result<T, ExitCode> {
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self.to_exit_code_with(Settings::Ignore(ErrorKind::BrokenPipe))
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}
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/// Returns an exit code depending on the settings
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///
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/// Via the settings, errors can be ignores (translates to exit code zero). All other errors
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/// are translated into exit code 1
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///
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fn to_exit_code_with(self, settings: Settings) -> Result<T, ExitCode> {
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self.map_err(move |e| match settings {
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Settings::Ignore(kind) => if e.kind() == kind {
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0
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} else {
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1
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},
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Settings::IgnoreAny(v) => if v.iter().any(|el| e.kind() == *el) {
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0
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} else {
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1
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},
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})
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.map_err(ExitCode::from)
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}
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}
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