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annotate rust/rhg/src/commands/files.rs @ 46502:3e2d539d0d1a

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rust: remove `FooError` structs with only `kind: FooErrorKind` enum field Use the enum directly as `FooError` instead. Differential Revision: https://phab.mercurial-scm.org/D9874
author Simon Sapin <simon.sapin@octobus.net>
date Tue, 26 Jan 2021 19:07:24 +0100
parents 8a4914397d02
children 252d1bdba33d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use crate::commands::Command;
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2 use crate::error::CommandError;
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3 use crate::ui::utf8_to_local;
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4 use crate::ui::Ui;
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5 use hg::operations::{list_rev_tracked_files, ListRevTrackedFilesError};
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6 use hg::operations::{Dirstate, ListDirstateTrackedFilesError};
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7 use hg::repo::Repo;
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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 struct FilesCommand<'a> {
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18 rev: Option<&'a str>,
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19 }
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20
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21 impl<'a> FilesCommand<'a> {
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22 pub fn new(rev: Option<&'a str>) -> Self {
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23 FilesCommand { rev }
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24 }
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25
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26 fn display_files(
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27 &self,
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28 ui: &Ui,
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29 repo: &Repo,
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30 files: impl IntoIterator<Item = &'a HgPath>,
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31 ) -> Result<(), CommandError> {
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32 let cwd = std::env::current_dir()
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33 .or_else(|e| Err(CommandError::CurrentDirNotFound(e)))?;
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34 let rooted_cwd = cwd
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35 .strip_prefix(repo.working_directory_path())
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36 .expect("cwd was already checked within the repository");
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37 let rooted_cwd = HgPathBuf::from(get_bytes_from_path(rooted_cwd));
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38
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39 let mut stdout = ui.stdout_buffer();
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40
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41 for file in files {
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42 stdout.write_all(relativize_path(file, &rooted_cwd).as_ref())?;
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43 stdout.write_all(b"\n")?;
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44 }
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45 stdout.flush()?;
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46 Ok(())
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47 }
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48 }
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49
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50 impl<'a> Command for FilesCommand<'a> {
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51 fn run(&self, ui: &Ui) -> Result<(), CommandError> {
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52 let repo = Repo::find()?;
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53 repo.check_requirements()?;
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54 if let Some(rev) = self.rev {
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55 let files = list_rev_tracked_files(&repo, rev)
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56 .map_err(|e| map_rev_error(rev, e))?;
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57 self.display_files(ui, &repo, files.iter())
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58 } else {
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59 let distate = Dirstate::new(&repo).map_err(map_dirstate_error)?;
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60 let files = distate.tracked_files().map_err(map_dirstate_error)?;
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61 self.display_files(ui, &repo, files)
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62 }
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63 }
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64 }
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65
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66 /// Convert `ListRevTrackedFilesError` to `CommandError`
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67 fn map_rev_error(rev: &str, err: ListRevTrackedFilesError) -> CommandError {
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68 match err {
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69 ListRevTrackedFilesError::IoError(err) => CommandError::Abort(Some(
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70 utf8_to_local(&format!("abort: {}\n", err)).into(),
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71 )),
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72 ListRevTrackedFilesError::InvalidRevision => {
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73 CommandError::Abort(Some(
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74 utf8_to_local(&format!(
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75 "abort: invalid revision identifier {}\n",
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76 rev
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77 ))
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78 .into(),
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79 ))
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80 }
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81 ListRevTrackedFilesError::AmbiguousPrefix => {
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82 CommandError::Abort(Some(
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83 utf8_to_local(&format!(
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84 "abort: ambiguous revision identifier {}\n",
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85 rev
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86 ))
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87 .into(),
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88 ))
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89 }
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90 ListRevTrackedFilesError::UnsuportedRevlogVersion(version) => {
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91 CommandError::Abort(Some(
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92 utf8_to_local(&format!(
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93 "abort: unsupported revlog version {}\n",
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94 version
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95 ))
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96 .into(),
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97 ))
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98 }
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99 ListRevTrackedFilesError::CorruptedRevlog => {
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100 CommandError::Abort(Some("abort: corrupted revlog\n".into()))
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101 }
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102 ListRevTrackedFilesError::UnknowRevlogDataFormat(format) => {
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103 CommandError::Abort(Some(
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104 utf8_to_local(&format!(
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105 "abort: unknow revlog dataformat {:?}\n",
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106 format
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107 ))
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108 .into(),
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109 ))
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110 }
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111 }
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112 }
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113
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114 /// Convert `ListDirstateTrackedFilesError` to `CommandError`
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115 fn map_dirstate_error(err: ListDirstateTrackedFilesError) -> CommandError {
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116 match err {
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117 ListDirstateTrackedFilesError::IoError(err) => CommandError::Abort(
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118 Some(utf8_to_local(&format!("abort: {}\n", err)).into()),
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119 ),
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120 ListDirstateTrackedFilesError::ParseError(_) => {
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121 CommandError::Abort(Some(
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122 // TODO find a better error message
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123 b"abort: parse error\n".to_vec(),
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124 ))
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125 }
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126 }
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127 }