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annotate rust/rhg/src/commands/config.rs @ 48355:6d4daf51283c

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rhg: implement the debugignorerhg subcommand This can be used to inspect the generated pattern, but also to benchmark the time it takes to parse hgignore. Differential Revision: https://phab.mercurial-scm.org/D11722
author Arseniy Alekseyev <aalekseyev@janestreet.com>
date Mon, 29 Nov 2021 14:07:47 +0000
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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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 }