annotate rust/rhg/src/commands/debugdata.rs @ 51502:a5d8f261b716 stable

obsutil: sort metadata before comparing in geteffectflag()

This is probably less important now that we dropped Python 2. We do still
support Python 3.6 though, and the dictionaries aren't ordered there either
(that was a big change that came with 3.7).

Still, maybe it's a good idea to sort metadata explicitly.

use crate::error::CommandError;
use clap::Arg;
use clap::ArgGroup;
use hg::operations::{debug_data, DebugDataKind};

pub const HELP_TEXT: &str = "
Dump the contents of a data file revision
";

pub fn args() -> clap::Command {
    clap::command!("debugdata")
        .arg(
            Arg::new("changelog")
                .help("open changelog")
                .short('c')
                .action(clap::ArgAction::SetTrue),
        )
        .arg(
            Arg::new("manifest")
                .help("open manifest")
                .short('m')
                .action(clap::ArgAction::SetTrue),
        )
        .group(
            ArgGroup::new("revlog")
                .args(["changelog", "manifest"])
                .required(true),
        )
        .arg(
            Arg::new("rev")
                .help("revision")
                .required(true)
                .value_name("REV"),
        )
        .about(HELP_TEXT)
}

#[logging_timer::time("trace")]
pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
    let args = invocation.subcommand_args;
    let rev = args
        .get_one::<String>("rev")
        .expect("rev should be a required argument");
    let kind = match (
        args.get_one::<bool>("changelog").unwrap(),
        args.get_one::<bool>("manifest").unwrap(),
    ) {
        (true, false) => DebugDataKind::Changelog,
        (false, true) => DebugDataKind::Manifest,
        (true, true) => {
            unreachable!("Should not happen since options are exclusive")
        }
        (false, false) => {
            unreachable!("Should not happen since options are required")
        }
    };

    let repo = invocation.repo?;
    if repo.has_narrow() {
        return Err(CommandError::unsupported(
            "support for ellipsis nodes is missing and repo has narrow enabled",
        ));
    }
    let data = debug_data(repo, rev, kind).map_err(|e| (e, rev.as_ref()))?;

    let mut stdout = invocation.ui.stdout_buffer();
    stdout.write_all(&data)?;
    stdout.flush()?;

    Ok(())
}