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annotate rust/rhg/src/commands/config.rs @ 48471:b005d07ded7d

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rhg: Skip reading the contents of ambiguous files in some cases If the size of the file in the working directory does not match the length of the filelog data, we know its contents will be different and don?t need to read it. rhg still decodes the filelog revision, which is not needed in some cases. Differential Revision: https://phab.mercurial-scm.org/D11910
author Simon Sapin <simon.sapin@octobus.net>
date Tue, 14 Dec 2021 20:36:36 +0100
parents b1e6265e8336
children 37bc3edef76f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 }