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annotate rust/rhg/src/commands/debugdata.rs @ 46500:184e46550dc8

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rhg: replace command structs with functions The `Command` trait was not used in any generic context, and the struct where nothing more than holders for values parsed from CLI arguments to be available to a `run` method. Differential Revision: https://phab.mercurial-scm.org/D9967
author Simon Sapin <simon.sapin@octobus.net>
date Mon, 08 Feb 2021 20:33:04 +0100
parents a6e4e4650bac
children 1ecaf09d9964
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3e2d539d0d1a rust: remove `FooError` structs with only `kind: FooErrorKind` enum field
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1 use crate::error::CommandError;
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2 use crate::ui::Ui;
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3 use clap::ArgMatches;
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4 use hg::config::Config;
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5 use hg::operations::{debug_data, DebugDataKind};
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8a4914397d02 rust: introduce Repo and Vfs types for filesystem abstraction
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6 use hg::repo::Repo;
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b1cea0dc9db0 rhg: Add debug timing
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7 use micro_timer::timed;
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9 pub const HELP_TEXT: &str = "
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10 Dump the contents of a data file revision
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11 ";
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12
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13 #[timed]
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14 pub fn run(
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15 ui: &Ui,
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16 config: &Config,
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17 args: &ArgMatches,
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18 ) -> Result<(), CommandError> {
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19 let rev = args
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20 .value_of("rev")
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21 .expect("rev should be a required argument");
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22 let kind =
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23 match (args.is_present("changelog"), args.is_present("manifest")) {
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24 (true, false) => DebugDataKind::Changelog,
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25 (false, true) => DebugDataKind::Manifest,
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26 (true, true) => {
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27 unreachable!("Should not happen since options are exclusive")
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28 }
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29 (false, false) => {
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30 unreachable!("Should not happen since options are required")
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31 }
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32 };
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33
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34 let repo = Repo::find(config)?;
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35 let data = debug_data(&repo, rev, kind).map_err(|e| (e, rev))?;
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36
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37 let mut stdout = ui.stdout_buffer();
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38 stdout.write_all(&data)?;
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39 stdout.flush()?;
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40
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41 Ok(())
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42 }