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annotate rust/rhg/src/error.rs @ 46443:43d63979a75e

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rust: use HgError in RevlogError and Vfs Differential Revision: https://phab.mercurial-scm.org/D9897
author Simon Sapin <simon.sapin@octobus.net>
date Wed, 27 Jan 2021 14:45:25 +0100
parents 02d3bb972121
children ca3f73cc3cf4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use crate::exitcode;
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2 use crate::ui::utf8_to_local;
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3 use crate::ui::UiError;
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4 use format_bytes::format_bytes;
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5 use hg::errors::HgError;
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6 use hg::operations::FindRootError;
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7 use hg::revlog::revlog::RevlogError;
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8 use hg::utils::files::get_bytes_from_path;
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9 use std::convert::From;
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10 use std::path::PathBuf;
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11
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12 /// The kind of command error
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13 #[derive(Debug, derive_more::From)]
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14 pub enum CommandError {
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15 /// The root of the repository cannot be found
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16 RootNotFound(PathBuf),
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17 /// The current directory cannot be found
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18 CurrentDirNotFound(std::io::Error),
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19 /// The standard output stream cannot be written to
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20 StdoutError,
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21 /// The standard error stream cannot be written to
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22 StderrError,
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23 /// The command aborted
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24 Abort(Option<Vec<u8>>),
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25 /// A mercurial capability as not been implemented.
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26 Unimplemented,
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27 /// Common cases
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28 #[from]
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29 Other(HgError),
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30 }
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31
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32 impl CommandError {
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33 pub fn get_exit_code(&self) -> exitcode::ExitCode {
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34 match self {
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35 CommandError::RootNotFound(_) => exitcode::ABORT,
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36 CommandError::CurrentDirNotFound(_) => exitcode::ABORT,
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37 CommandError::StdoutError => exitcode::ABORT,
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38 CommandError::StderrError => exitcode::ABORT,
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39 CommandError::Abort(_) => exitcode::ABORT,
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40 CommandError::Unimplemented => exitcode::UNIMPLEMENTED_COMMAND,
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41 CommandError::Other(HgError::UnsupportedFeature(_)) => {
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42 exitcode::UNIMPLEMENTED_COMMAND
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43 }
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44 CommandError::Other(_) => exitcode::ABORT,
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45 }
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46 }
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47
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48 /// Return the message corresponding to the error if any
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49 pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> {
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50 match self {
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51 CommandError::RootNotFound(path) => {
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52 let bytes = get_bytes_from_path(path);
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53 Some(format_bytes!(
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54 b"abort: no repository found in '{}' (.hg not found)!\n",
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55 bytes.as_slice()
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56 ))
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57 }
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58 CommandError::CurrentDirNotFound(e) => Some(format_bytes!(
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59 b"abort: error getting current working directory: {}\n",
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60 e.to_string().as_bytes(),
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61 )),
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62 CommandError::Abort(message) => message.to_owned(),
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63
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64 CommandError::StdoutError
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65 | CommandError::StderrError
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66 | CommandError::Unimplemented
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67 | CommandError::Other(HgError::UnsupportedFeature(_)) => None,
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68
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69 CommandError::Other(e) => {
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70 Some(format_bytes!(b"{}\n", e.to_string().as_bytes()))
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71 }
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72 }
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73 }
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74
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75 /// Exist the process with the corresponding exit code.
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76 pub fn exit(&self) {
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77 std::process::exit(self.get_exit_code())
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78 }
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79 }
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80
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81 impl From<UiError> for CommandError {
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82 fn from(error: UiError) -> Self {
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83 match error {
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84 UiError::StdoutError(_) => CommandError::StdoutError,
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85 UiError::StderrError(_) => CommandError::StderrError,
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86 }
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87 }
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88 }
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89
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90 impl From<FindRootError> for CommandError {
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91 fn from(err: FindRootError) -> Self {
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92 match err {
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93 FindRootError::RootNotFound(path) => {
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94 CommandError::RootNotFound(path)
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95 }
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96 FindRootError::GetCurrentDirError(e) => {
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97 CommandError::CurrentDirNotFound(e)
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98 }
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99 }
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100 }
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101 }
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102
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103 impl From<(RevlogError, &str)> for CommandError {
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104 fn from((err, rev): (RevlogError, &str)) -> CommandError {
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105 match err {
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106 RevlogError::InvalidRevision => CommandError::Abort(Some(
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107 utf8_to_local(&format!(
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108 "abort: invalid revision identifier {}\n",
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109 rev
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110 ))
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111 .into(),
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112 )),
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113 RevlogError::AmbiguousPrefix => CommandError::Abort(Some(
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parents: 46435
diff changeset
114 utf8_to_local(&format!(
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b274aa2f20fd rust: remove three enums that were identical to `RevlogError`
Simon Sapin <simon.sapin@octobus.net>
parents: 46436
diff changeset
115 "abort: ambiguous revision identifier {}\n",
46436
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
116 rev
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
117 ))
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
118 .into(),
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
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119 )),
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43d63979a75e rust: use HgError in RevlogError and Vfs
Simon Sapin <simon.sapin@octobus.net>
parents: 46442
diff changeset
120 RevlogError::Other(err) => CommandError::Other(err),
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252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
121 }
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
122 }
252d1bdba33d rhg: replace `map_*_error` functions with `From` impls
Simon Sapin <simon.sapin@octobus.net>
parents: 46435
diff changeset
123 }