Mercurial > hg
annotate rust/rhg/src/error.rs @ 45937:2ad2745e0be9
rhg: exit with relevant code for unsupported requirements
Differential Revision: https://phab.mercurial-scm.org/D9399
author | Simon Sapin <simon-commits@exyr.org> |
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date | Tue, 24 Nov 2020 18:52:38 +0100 |
parents | a2eda1ff22aa |
children | fada33872b5b |
rev | line source |
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1 use crate::exitcode; |
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2 use crate::ui::UiError; |
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3 use hg::operations::{FindRootError, FindRootErrorKind}; |
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4 use hg::requirements::RequirementsError; |
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5 use hg::utils::files::get_bytes_from_path; |
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6 use std::convert::From; |
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7 use std::path::PathBuf; |
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8 |
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9 /// The kind of command error |
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10 #[derive(Debug)] |
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11 pub enum CommandErrorKind { |
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12 /// The root of the repository cannot be found |
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13 RootNotFound(PathBuf), |
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14 /// The current directory cannot be found |
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15 CurrentDirNotFound(std::io::Error), |
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16 /// `.hg/requires` |
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17 RequirementsError(RequirementsError), |
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18 /// The standard output stream cannot be written to |
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19 StdoutError, |
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20 /// The standard error stream cannot be written to |
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21 StderrError, |
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22 /// The command aborted |
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23 Abort(Option<Vec<u8>>), |
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24 /// A mercurial capability as not been implemented. |
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25 Unimplemented, |
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26 } |
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27 |
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28 impl CommandErrorKind { |
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29 pub fn get_exit_code(&self) -> exitcode::ExitCode { |
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30 match self { |
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31 CommandErrorKind::RootNotFound(_) => exitcode::ABORT, |
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32 CommandErrorKind::CurrentDirNotFound(_) => exitcode::ABORT, |
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33 CommandErrorKind::RequirementsError( |
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34 RequirementsError::Unsupported { .. }, |
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35 ) => exitcode::UNIMPLEMENTED_COMMAND, |
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36 CommandErrorKind::RequirementsError(_) => exitcode::ABORT, |
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37 CommandErrorKind::StdoutError => exitcode::ABORT, |
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38 CommandErrorKind::StderrError => exitcode::ABORT, |
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39 CommandErrorKind::Abort(_) => exitcode::ABORT, |
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40 CommandErrorKind::Unimplemented => exitcode::UNIMPLEMENTED_COMMAND, |
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41 } |
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42 } |
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43 |
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44 /// Return the message corresponding to the error kind if any |
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45 pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> { |
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46 match self { |
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47 // TODO use formating macro |
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48 CommandErrorKind::RootNotFound(path) => { |
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49 let bytes = get_bytes_from_path(path); |
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50 Some( |
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51 [ |
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52 b"abort: no repository found in '", |
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53 bytes.as_slice(), |
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54 b"' (.hg not found)!\n", |
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55 ] |
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56 .concat(), |
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57 ) |
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58 } |
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59 // TODO use formating macro |
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60 CommandErrorKind::CurrentDirNotFound(e) => Some( |
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61 [ |
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62 b"abort: error getting current working directory: ", |
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63 e.to_string().as_bytes(), |
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64 b"\n", |
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65 ] |
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66 .concat(), |
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67 ), |
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68 CommandErrorKind::RequirementsError( |
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69 RequirementsError::Corrupted, |
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70 ) => Some( |
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71 "abort: .hg/requires is corrupted\n".as_bytes().to_owned(), |
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72 ), |
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73 CommandErrorKind::Abort(message) => message.to_owned(), |
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74 _ => None, |
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75 } |
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76 } |
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77 } |
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78 |
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79 /// The error type for the Command trait |
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80 #[derive(Debug)] |
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81 pub struct CommandError { |
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82 pub kind: CommandErrorKind, |
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83 } |
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84 |
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85 impl CommandError { |
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86 /// Exist the process with the corresponding exit code. |
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87 pub fn exit(&self) { |
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88 std::process::exit(self.kind.get_exit_code()) |
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89 } |
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90 |
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91 /// Return the message corresponding to the command error if any |
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92 pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> { |
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93 self.kind.get_error_message_bytes() |
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94 } |
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95 } |
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96 |
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97 impl From<CommandErrorKind> for CommandError { |
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98 fn from(kind: CommandErrorKind) -> Self { |
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99 CommandError { kind } |
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100 } |
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101 } |
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102 |
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103 impl From<UiError> for CommandError { |
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104 fn from(error: UiError) -> Self { |
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105 CommandError { |
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106 kind: match error { |
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107 UiError::StdoutError(_) => CommandErrorKind::StdoutError, |
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108 UiError::StderrError(_) => CommandErrorKind::StderrError, |
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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 impl From<FindRootError> for CommandError { |
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115 fn from(err: FindRootError) -> Self { |
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116 match err.kind { |
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117 FindRootErrorKind::RootNotFound(path) => CommandError { |
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118 kind: CommandErrorKind::RootNotFound(path), |
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119 }, |
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120 FindRootErrorKind::GetCurrentDirError(e) => CommandError { |
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121 kind: CommandErrorKind::CurrentDirNotFound(e), |
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122 }, |
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123 } |
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124 } |
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125 } |
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126 |
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127 impl From<RequirementsError> for CommandError { |
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128 fn from(err: RequirementsError) -> Self { |
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129 CommandError { |
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130 kind: CommandErrorKind::RequirementsError(err), |
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131 } |
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132 } |
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133 } |