annotate rust/rhg/src/commands/files.rs @ 46925:b5e8bf10436e

rhg: Make `files` work on repo-relative paths when possible When the current directory is outside of the repository we need to turn everything into absolute filesystem paths in order to compute correct relative paths. This was previously done unconditionally, but is not necessary when the current directory is inside the repository. With this change `rhg files > /dev/null` at the root of a mozilla-central snapshot goes from ~150 ms to ~70 ms. My repository is located at a somewhat long path though (93 bytes). The effect may not be as pronounced at a shorter path. Differential Revision: https://phab.mercurial-scm.org/D10200
author Simon Sapin <simon.sapin@octobus.net>
date Sat, 13 Mar 2021 09:50:34 +0100
parents 63bfcddddac1
children 9ecf802b06e0
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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::Arg;
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4 use hg::operations::list_rev_tracked_files;
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5 use hg::operations::Dirstate;
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6 use hg::repo::Repo;
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7 use hg::utils::current_dir;
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8 use hg::utils::files::{get_bytes_from_path, relativize_path};
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9 use hg::utils::hg_path::{HgPath, HgPathBuf};
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10
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11 pub const HELP_TEXT: &str = "
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12 List tracked files.
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13
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14 Returns 0 on success.
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15 ";
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16
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17 pub fn args() -> clap::App<'static, 'static> {
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18 clap::SubCommand::with_name("files")
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19 .arg(
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20 Arg::with_name("rev")
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21 .help("search the repository as it is in REV")
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22 .short("-r")
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23 .long("--revision")
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24 .value_name("REV")
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25 .takes_value(true),
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26 )
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27 .about(HELP_TEXT)
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28 }
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29
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30 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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31 let relative = invocation.config.get(b"ui", b"relative-paths");
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32 if relative.is_some() {
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33 return Err(CommandError::unsupported(
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34 "non-default ui.relative-paths",
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35 ));
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36 }
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37
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38 let rev = invocation.subcommand_args.value_of("rev");
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39
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40 let repo = invocation.repo?;
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41 if let Some(rev) = rev {
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42 let files = list_rev_tracked_files(repo, rev).map_err(|e| (e, rev))?;
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43 display_files(invocation.ui, repo, files.iter())
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44 } else {
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45 let distate = Dirstate::new(repo)?;
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46 let files = distate.tracked_files()?;
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47 display_files(invocation.ui, repo, files)
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48 }
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49 }
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50
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51 fn display_files<'a>(
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52 ui: &Ui,
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53 repo: &Repo,
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54 files: impl IntoIterator<Item = &'a HgPath>,
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55 ) -> Result<(), CommandError> {
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56 let mut stdout = ui.stdout_buffer();
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57
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58 let cwd = current_dir()?;
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59 let working_directory = repo.working_directory_path();
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60 let working_directory = cwd.join(working_directory); // Make it absolute
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61
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62 let mut any = false;
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63 if let Ok(cwd_relative_to_repo) = cwd.strip_prefix(&working_directory) {
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64 // The current directory is inside the repo, so we can work with
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65 // relative paths
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66 let cwd = HgPathBuf::from(get_bytes_from_path(cwd_relative_to_repo));
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67 for file in files {
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68 any = true;
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69 stdout.write_all(relativize_path(&file, &cwd).as_ref())?;
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70 stdout.write_all(b"\n")?;
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71 }
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72 } else {
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73 let working_directory =
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74 HgPathBuf::from(get_bytes_from_path(working_directory));
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75 let cwd = HgPathBuf::from(get_bytes_from_path(cwd));
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76 for file in files {
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77 any = true;
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78 // Absolute path in the filesystem
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79 let file = working_directory.join(file);
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80 stdout.write_all(relativize_path(&file, &cwd).as_ref())?;
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81 stdout.write_all(b"\n")?;
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82 }
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83 }
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84
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85 stdout.flush()?;
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86 if any {
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87 Ok(())
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88 } else {
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89 Err(CommandError::Unsuccessful)
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90 }
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91 }