dotfiles_core/
exec_wrapper.rs

1// Copyright (c) 2021-2022 Miguel Barreto and others
2//
3// Permission is hereby granted, free of charge, to any person obtaining
4// a copy of this software and associated documentation files (the
5// "Software"), to deal in the Software without restriction, including
6// without limitation the rights to use, copy, modify, merge, publish,
7// distribute, sublicense, and/or sell copies of the Software, and to
8// permit persons to whom the Software is furnished to do so, subject to
9// the following conditions:
10//
11// The above copyright notice and this permission notice shall be
12// included in all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
18// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
19// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
20// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22//! Wraps some logic to run external commands and handle errors
23
24use std::io::Result as IoResult;
25use subprocess::{Exec, ExitStatus};
26
27
28use crate::error::{execution_error, process_until_first_err, DotfilesError};
29
30/// Executes the `cmd` and waits for it to finish.
31///
32/// If the execution returns a [std::io::Error] then it uses the `io_error_message` 
33/// for the message in a DotfilesError.
34///
35/// If the execution finishes but in an error state, then it uses the
36/// `error_while_running_message` instead.
37pub fn execute_commands(
38  cmds: Vec<Exec>,
39  io_error_message: &str,
40  error_while_running_message: &str,
41) -> Result<(), DotfilesError> {
42  process_until_first_err(cmds.into_iter(), |cmd| {
43    handle_exec_error(cmd.join(),io_error_message, error_while_running_message)
44  })
45}
46
47fn handle_exec_error(
48  result: IoResult<ExitStatus>,
49  io_error_message: &str,
50  error_while_running_message: &str,
51) -> Result<(), DotfilesError> {
52  result.map_or_else(
53    |err| {
54      Err(DotfilesError::from(
55        io_error_message.into(),
56        execution_error(Some(err), None),
57      ))
58    },
59    |status| match status.success() {
60      true => Ok(()),
61      false => Err(DotfilesError::from(
62        format!("{error_while_running_message}, {status:?}"),
63        execution_error(None, Some(status)),
64      )),
65    },
66  )
67}
dotfiles_core/exec_wrapper.rs

dotfiles_core/
exec_wrapper.rs
