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annotate rust/rhg/src/commands/config.rs @ 50215:ae61851e6fe2 stable

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dirstate: add a way to test races happening during status We add the `devel.sync.status.pre-dirstate-write-file` config option to easily test what happens when other operations happen during the window where `hg status` is done working but has not updated the cache on disk yet. We introduce the framework for testing such races too, actual tests will be added in the next changesets. For now the test is only checking dirstate-v1. We will extend the test coverage later too. Check test documentation for details. Code change from Rapha?l Gom?s <rgomes@octobus.net> Test change from Pierre-Yves David <pierre-yves.david@octobus.net>
author Rapha?l Gom?s <rgomes@octobus.net>, Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 28 Feb 2023 15:25:47 +0100
parents b1e6265e8336
children 37bc3edef76f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use crate::error::CommandError;
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2 use clap::Arg;
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3 use format_bytes::format_bytes;
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4 use hg::errors::HgError;
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5 use hg::utils::SliceExt;
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6
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7 pub const HELP_TEXT: &str = "
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8 With one argument of the form section.name, print just the value of that config item.
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9 ";
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10
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11 pub fn args() -> clap::App<'static, 'static> {
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12 clap::SubCommand::with_name("config")
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13 .arg(
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14 Arg::with_name("name")
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15 .help("the section.name to print")
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16 .value_name("NAME")
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17 .required(true)
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18 .takes_value(true),
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19 )
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20 .about(HELP_TEXT)
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21 }
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22
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23 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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24 let (section, name) = invocation
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25 .subcommand_args
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26 .value_of("name")
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27 .expect("missing required CLI argument")
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28 .as_bytes()
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29 .split_2(b'.')
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30 .ok_or_else(|| HgError::unsupported("hg config <section>"))?;
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31
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32 if let Some(value) = invocation.config.get(section, name) {
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33 invocation.ui.write_stdout(&format_bytes!(b"{}\n", value))?;
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34 Ok(())
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35 } else {
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36 Err(CommandError::Unsuccessful)
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37 }
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38 }