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annotate rust/rhg/src/commands/config.rs @ 52774:94e2547e6f3d

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rust: move code from utils to utils::strings This moves string-related functions in hg::utils into the recently added hg::utils::strings module.
author Mitchell Kember <mkember@janestreet.com>
date Thu, 16 Jan 2025 13:15:02 -0500
parents 37bc3edef76f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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5dbf875b3275 rhg: simplify `FindRootError` handling
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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::strings::SliceExt;
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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::Command {
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12 clap::command!("config")
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13 .arg(
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14 Arg::new("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 )
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19 .about(HELP_TEXT)
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20 }
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21
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22 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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23 let (section, name) = invocation
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24 .subcommand_args
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25 .get_one::<String>("name")
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26 .expect("missing required CLI argument")
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27 .as_bytes()
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28 .split_2(b'.')
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29 .ok_or_else(|| HgError::unsupported("hg config <section>"))?;
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30
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31 if let Some(value) = invocation.config.get(section, name) {
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32 invocation.ui.write_stdout(&format_bytes!(b"{}\n", value))?;
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33 Ok(())
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34 } else {
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35 Err(CommandError::Unsuccessful)
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36 }
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37 }