Mercurial > hg
annotate mercurial/error.py @ 52282:51a350a22d0c
branching: merge stable into default
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Wed, 20 Nov 2024 15:53:19 +0100 |
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1 # error.py - Mercurial exceptions |
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2 # |
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3 # Copyright 2005-2008 Olivia Mackall <olivia@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
7633 | 7 |
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8 """Mercurial exceptions. |
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9 |
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10 This allows us to catch exceptions at higher levels without forcing |
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11 imports. |
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12 """ |
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13 |
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14 from __future__ import annotations |
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15 |
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16 import difflib |
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17 |
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18 from typing import ( |
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19 AnyStr, |
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20 Iterable, |
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21 List, |
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22 Optional, |
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23 Sequence, |
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24 Union, |
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25 ) |
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26 |
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27 # Do not import anything but pycompat here, please |
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28 from . import pycompat |
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29 |
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30 |
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31 def _tobytes(exc) -> bytes: |
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32 """Byte-stringify exception in the same way as BaseException_str()""" |
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33 if not exc.args: |
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34 return b'' |
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35 if len(exc.args) == 1: |
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36 return pycompat.bytestr(exc.args[0]) |
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37 return b'(%s)' % b', '.join(b"'%s'" % pycompat.bytestr(a) for a in exc.args) |
7633 | 38 |
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39 |
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40 class Hint: |
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41 """Mix-in to provide a hint of an error |
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42 |
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43 This should come first in the inheritance list to consume a hint and |
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44 pass remaining arguments to the exception class. |
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45 """ |
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46 |
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47 def __init__(self, *args, **kw): |
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48 self.hint: Optional[bytes] = kw.pop('hint', None) |
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49 super(Hint, self).__init__(*args, **kw) |
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50 |
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51 |
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52 class Error(Hint, Exception): |
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53 """Base class for Mercurial errors.""" |
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54 |
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55 coarse_exit_code = None |
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56 detailed_exit_code = None |
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57 |
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58 def __init__(self, message: bytes, hint: Optional[bytes] = None) -> None: |
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59 self.message = message |
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60 self.hint = hint |
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61 # Pass the message into the Exception constructor to help extensions |
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62 # that look for exc.args[0]. |
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63 Exception.__init__(self, message) |
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64 |
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65 def __bytes__(self): |
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66 return self.message |
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67 |
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68 def __str__(self) -> str: |
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69 # the output would be unreadable if the message was translated, |
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70 # but do not replace it with encoding.strfromlocal(), which |
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71 # may raise another exception. |
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72 return pycompat.sysstr(self.__bytes__()) |
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73 |
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74 def format(self) -> bytes: |
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75 from .i18n import _ |
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76 |
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77 message = _(b"abort: %s\n") % self.message |
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78 if self.hint: |
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79 message += _(b"(%s)\n") % self.hint |
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80 return message |
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81 |
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82 |
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83 class Abort(Error): |
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84 """Raised if a command needs to print an error and exit.""" |
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85 |
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86 |
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87 class StorageError(Error): |
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88 """Raised when an error occurs in a storage layer. |
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89 |
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90 Usually subclassed by a storage-specific exception. |
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91 """ |
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92 |
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93 detailed_exit_code = 50 |
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94 |
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95 |
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96 class RevlogError(StorageError): |
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97 pass |
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99 |
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100 class SidedataHashError(RevlogError): |
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101 def __init__(self, key: int, expected: bytes, got: bytes) -> None: |
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102 self.hint = None |
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103 self.sidedatakey = key |
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104 self.expecteddigest = expected |
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105 self.actualdigest = got |
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106 |
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107 |
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108 class FilteredIndexError(IndexError): |
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109 __bytes__ = _tobytes |
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110 |
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111 |
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113 def __init__(self, name: bytes, index: bytes, message: bytes) -> None: |
7633 | 114 self.name = name |
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115 self.index = index |
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116 # this can't be called 'message' because at least some installs of |
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117 # Python 2.6+ complain about the 'message' property being deprecated |
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118 self.lookupmessage = message |
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119 if isinstance(name, bytes) and len(name) == 20: |
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120 from .node import hex |
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121 |
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122 name = hex(name) |
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123 # if name is a binary node, it can be None |
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124 RevlogError.__init__( |
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125 self, b'%s@%s: %s' % (index, pycompat.bytestr(name), message) |
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126 ) |
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128 def __bytes__(self): |
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129 return RevlogError.__bytes__(self) |
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130 |
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132 return RevlogError.__str__(self) | |
7636 | 133 |
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134 |
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135 class AmbiguousPrefixLookupError(LookupError): |
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136 pass |
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137 |
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138 |
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139 class FilteredLookupError(LookupError): |
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140 pass |
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141 |
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142 |
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143 class ManifestLookupError(LookupError): |
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144 pass |
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145 |
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146 |
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147 class CommandError(Exception): |
7636 | 148 """Exception raised on errors in parsing the command line.""" |
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149 |
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150 def __init__(self, command: Optional[bytes], message: bytes) -> None: |
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151 self.command = command |
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152 self.message = message |
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153 super(CommandError, self).__init__() |
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154 |
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155 __bytes__ = _tobytes |
7637 | 156 |
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157 |
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158 class UnknownCommand(Exception): |
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159 """Exception raised if command is not in the command table.""" |
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160 |
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161 def __init__( |
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162 self, |
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163 command: bytes, |
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164 all_commands: Optional[List[bytes]] = None, |
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165 ) -> None: |
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166 self.command = command |
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167 self.all_commands = all_commands |
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168 super(UnknownCommand, self).__init__() |
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169 |
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170 __bytes__ = _tobytes |
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171 |
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172 |
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173 class AmbiguousCommand(Exception): |
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174 """Exception raised if command shortcut matches more than one command.""" |
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175 |
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176 def __init__(self, prefix: bytes, matches: List[bytes]) -> None: |
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177 self.prefix = prefix |
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178 self.matches = matches |
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179 super(AmbiguousCommand, self).__init__() |
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180 |
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181 __bytes__ = _tobytes |
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182 |
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183 |
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184 class WorkerError(Exception): |
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185 """Exception raised when a worker process dies.""" |
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186 |
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187 def __init__(self, status_code: int) -> None: |
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188 self.status_code = status_code |
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189 # Pass status code to superclass just so it becomes part of __bytes__ |
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190 super(WorkerError, self).__init__(status_code) |
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191 |
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192 __bytes__ = _tobytes |
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193 |
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194 |
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195 class InterventionRequired(Abort): |
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196 """Exception raised when a command requires human intervention.""" |
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197 |
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198 coarse_exit_code = 1 |
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199 detailed_exit_code = 240 |
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200 |
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201 def format(self) -> bytes: |
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202 from .i18n import _ |
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203 |
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204 message = _(b"%s\n") % self.message |
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205 if self.hint: |
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206 message += _(b"(%s)\n") % self.hint |
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207 return message |
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208 |
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209 |
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210 class ConflictResolutionRequired(InterventionRequired): |
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211 """Exception raised when a continuable command required merge conflict resolution.""" |
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212 |
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213 def __init__(self, opname: bytes) -> None: |
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214 from .i18n import _ |
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215 |
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216 self.opname = opname |
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217 InterventionRequired.__init__( |
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218 self, |
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219 _( |
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220 b"unresolved conflicts (see 'hg resolve', then 'hg %s --continue')" |
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221 ) |
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222 % opname, |
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223 ) |
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224 |
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225 |
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226 class InputError(Abort): |
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227 """Indicates that the user made an error in their input. |
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228 |
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229 Examples: Invalid command, invalid flags, invalid revision. |
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230 """ |
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231 |
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232 detailed_exit_code = 10 |
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233 |
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234 |
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235 class StateError(Abort): |
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236 """Indicates that the operation might work if retried in a different state. |
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237 |
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238 Examples: Unresolved merge conflicts, unfinished operations. |
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239 """ |
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240 |
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241 detailed_exit_code = 20 |
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242 |
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243 |
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244 class CanceledError(Abort): |
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245 """Indicates that the user canceled the operation. |
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246 |
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247 Examples: Close commit editor with error status, quit chistedit. |
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248 """ |
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249 |
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250 detailed_exit_code = 250 |
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251 |
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252 |
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253 class SecurityError(Abort): |
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254 """Indicates that some aspect of security failed. |
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255 |
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256 Examples: Bad server credentials, expired local credentials for network |
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257 filesystem, mismatched GPG signature, DoS protection. |
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258 """ |
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259 |
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260 detailed_exit_code = 150 |
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261 |
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262 |
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263 class HookLoadError(Abort): |
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264 """raised when loading a hook fails, aborting an operation |
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265 |
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266 Exists to allow more specialized catching.""" |
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267 |
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268 |
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269 class HookAbort(Abort): |
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270 """raised when a validation hook fails, aborting an operation |
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271 |
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272 Exists to allow more specialized catching.""" |
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273 |
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274 detailed_exit_code = 40 |
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275 |
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276 |
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277 class ConfigError(Abort): |
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278 """Exception raised when parsing config files""" |
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279 |
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280 detailed_exit_code = 30 |
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281 |
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282 def __init__( |
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283 self, |
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284 message: bytes, |
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285 location: Optional[bytes] = None, |
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286 hint: Optional[bytes] = None, |
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287 ) -> None: |
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288 super(ConfigError, self).__init__(message, hint=hint) |
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289 self.location = location |
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290 |
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291 def format(self) -> bytes: |
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292 from .i18n import _ |
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293 |
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294 if self.location is not None: |
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295 message = _(b"config error at %s: %s\n") % ( |
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296 pycompat.bytestr(self.location), |
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297 self.message, |
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298 ) |
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299 else: |
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300 message = _(b"config error: %s\n") % self.message |
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301 if self.hint: |
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302 message += _(b"(%s)\n") % self.hint |
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303 return message |
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304 |
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305 |
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306 class UpdateAbort(Abort): |
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307 """Raised when an update is aborted for destination issue""" |
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308 |
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309 |
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310 class MergeDestAbort(Abort): |
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311 """Raised when an update is aborted for destination issues""" |
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312 |
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313 |
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314 class NoMergeDestAbort(MergeDestAbort): |
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315 """Raised when an update is aborted because there is nothing to merge""" |
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316 |
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317 |
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318 class ManyMergeDestAbort(MergeDestAbort): |
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319 """Raised when an update is aborted because destination is ambiguous""" |
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320 |
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321 |
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322 class ResponseExpected(Abort): |
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323 """Raised when an EOF is received for a prompt""" |
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324 |
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325 def __init__(self): |
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326 from .i18n import _ |
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327 |
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328 Abort.__init__(self, _(b'response expected')) |
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329 |
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330 |
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331 class RemoteError(Abort): |
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332 """Exception raised when interacting with a remote repo fails""" |
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333 |
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334 detailed_exit_code = 100 |
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335 |
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336 |
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337 class OutOfBandError(RemoteError): |
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338 """Exception raised when a remote repo reports failure""" |
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339 |
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340 def __init__( |
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341 self, |
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342 message: Optional[bytes] = None, |
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343 hint: Optional[bytes] = None, |
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344 ): |
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345 from .i18n import _ |
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346 |
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347 if message: |
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348 # Abort.format() adds a trailing newline |
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349 message = _(b"remote error:\n%s") % message.rstrip(b'\n') |
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350 else: |
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351 message = _(b"remote error") |
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352 super(OutOfBandError, self).__init__(message, hint=hint) |
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353 |
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354 |
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355 class ParseError(Abort): |
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356 """Raised when parsing config files and {rev,file}sets (msg[, pos])""" |
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357 |
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358 detailed_exit_code = 10 |
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359 |
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360 def __init__( |
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361 self, |
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362 message: bytes, |
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363 location: Optional[Union[bytes, int]] = None, |
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364 hint: Optional[bytes] = None, |
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365 ): |
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366 super(ParseError, self).__init__(message, hint=hint) |
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367 self.location = location |
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368 |
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369 def format(self) -> bytes: |
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370 from .i18n import _ |
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371 |
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372 if self.location is not None: |
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373 message = _(b"hg: parse error at %s: %s\n") % ( |
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374 pycompat.bytestr(self.location), |
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375 self.message, |
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376 ) |
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377 else: |
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378 message = _(b"hg: parse error: %s\n") % self.message |
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379 if self.hint: |
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380 message += _(b"(%s)\n") % self.hint |
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381 return message |
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382 |
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383 |
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384 class PatchError(Exception): |
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385 __bytes__ = _tobytes |
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386 |
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387 |
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388 class PatchParseError(PatchError): |
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389 __bytes__ = _tobytes |
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390 |
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391 |
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392 class PatchApplicationError(PatchError): |
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393 __bytes__ = _tobytes |
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394 |
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395 |
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396 def getsimilar(symbols: Iterable[bytes], value: bytes) -> List[bytes]: |
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397 sim = lambda x: difflib.SequenceMatcher(None, value, x).ratio() |
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398 # The cutoff for similarity here is pretty arbitrary. It should |
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399 # probably be investigated and tweaked. |
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400 return [s for s in symbols if sim(s) > 0.6] |
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401 |
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402 |
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403 def similarity_hint(similar: List[bytes]) -> Optional[bytes]: |
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404 from .i18n import _ |
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405 |
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406 if len(similar) == 1: |
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407 return _(b"did you mean %s?") % similar[0] |
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408 elif similar: |
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409 ss = b", ".join(sorted(similar)) |
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410 return _(b"did you mean one of %s?") % ss |
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411 else: |
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412 return None |
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413 |
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414 |
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415 class UnknownIdentifier(ParseError): |
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416 """Exception raised when a {rev,file}set references an unknown identifier""" |
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417 |
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418 def __init__(self, function: bytes, symbols: Iterable[bytes]) -> None: |
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419 from .i18n import _ |
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420 |
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421 similar = getsimilar(symbols, function) |
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422 hint = similarity_hint(similar) |
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423 |
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424 ParseError.__init__( |
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425 self, _(b"unknown identifier: %s") % function, hint=hint |
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426 ) |
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427 |
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428 |
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429 class RepoError(Hint, Exception): |
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430 __bytes__ = _tobytes |
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432 |
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433 class RepoLookupError(RepoError): |
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434 pass |
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435 |
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436 |
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437 class FilteredRepoLookupError(RepoLookupError): |
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438 pass |
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439 |
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440 |
7637 | 441 class CapabilityError(RepoError): |
442 pass | |
7640 | 443 |
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444 |
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445 class RequirementError(RepoError): |
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446 """Exception raised if .hg/requires has an unknown entry.""" |
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447 |
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448 |
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449 class StdioError(IOError): |
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450 """Raised if I/O to stdout or stderr fails""" |
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451 |
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452 def __init__(self, err: IOError) -> None: |
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453 IOError.__init__(self, err.errno, err.strerror) |
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454 |
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455 # no __bytes__() because error message is derived from the standard IOError |
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456 |
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457 |
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458 class UnsupportedMergeRecords(Abort): |
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459 def __init__(self, recordtypes: Iterable[bytes]) -> None: |
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460 from .i18n import _ |
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461 |
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462 self.recordtypes = sorted(recordtypes) |
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463 s = b' '.join(self.recordtypes) |
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464 Abort.__init__( |
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465 self, |
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466 _(b'unsupported merge state records: %s') % s, |
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467 hint=_( |
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468 b'see https://mercurial-scm.org/wiki/MergeStateRecords for ' |
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469 b'more information' |
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470 ), |
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471 ) |
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472 |
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473 |
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474 class UnknownVersion(Abort): |
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475 """generic exception for aborting from an encounter with an unknown version""" |
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476 |
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477 def __init__( |
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478 self, |
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479 msg: bytes, |
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480 hint: Optional[bytes] = None, |
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481 version: Optional[bytes] = None, |
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482 ) -> None: |
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483 self.version = version |
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484 super(UnknownVersion, self).__init__(msg, hint=hint) |
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485 |
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486 |
7640 | 487 class LockError(IOError): |
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488 def __init__( |
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489 self, |
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490 errno: int, |
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491 strerror: str, |
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492 filename: bytes, |
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493 desc: Optional[bytes], |
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494 ) -> None: |
7640 | 495 IOError.__init__(self, errno, strerror, filename) |
496 self.desc = desc | |
497 | |
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498 # no __bytes__() because error message is derived from the standard IOError |
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499 |
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500 |
7640 | 501 class LockHeld(LockError): |
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502 def __init__( |
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503 self, |
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504 errno: int, |
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505 filename: bytes, |
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506 desc: Optional[bytes], |
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507 locker, |
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508 ): |
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509 LockError.__init__(self, errno, 'Lock held', filename, desc) |
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510 self.filename: bytes = filename |
7640 | 511 self.locker = locker |
512 | |
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513 |
7640 | 514 class LockUnavailable(LockError): |
515 pass | |
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516 |
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517 |
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518 # LockError is for errors while acquiring the lock -- this is unrelated |
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519 class LockInheritanceContractViolation(RuntimeError): |
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520 __bytes__ = _tobytes |
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521 |
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522 |
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523 class ResponseError(Exception): |
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524 """Raised to print an error with part of output and exit.""" |
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525 |
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526 __bytes__ = _tobytes |
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527 |
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528 |
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529 # derived from KeyboardInterrupt to simplify some breakout code |
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530 class SignalInterrupt(KeyboardInterrupt): |
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531 """Exception raised on SIGTERM and SIGHUP.""" |
7646 | 532 |
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533 |
7646 | 534 class SignatureError(Exception): |
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535 __bytes__ = _tobytes |
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536 |
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537 |
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538 class PushRaced(RuntimeError): |
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539 """An exception raised during unbundling that indicate a push race""" |
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540 |
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541 __bytes__ = _tobytes |
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542 |
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543 |
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544 class ProgrammingError(Hint, RuntimeError): |
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545 """Raised if a mercurial (core or extension) developer made a mistake""" |
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546 |
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547 def __init__(self, msg: AnyStr, *args, **kwargs): |
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548 # On Python 3, turn the message back into a string since this is |
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549 # an internal-only error that won't be printed except in a |
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550 # stack traces. |
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551 msg = pycompat.sysstr(msg) |
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552 super(ProgrammingError, self).__init__(msg, *args, **kwargs) |
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553 |
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554 __bytes__ = _tobytes |
30573 | 555 |
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556 |
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557 class WdirUnsupported(Exception): |
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558 """An exception which is raised when 'wdir()' is not supported""" |
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559 |
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560 __bytes__ = _tobytes |
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561 |
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562 |
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563 # bundle2 related errors |
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564 class BundleValueError(ValueError): |
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565 """error raised when bundle2 cannot be processed""" |
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566 |
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567 __bytes__ = _tobytes |
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568 |
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569 |
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570 class BundleUnknownFeatureError(BundleValueError): |
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571 def __init__(self, parttype=None, params=(), values=()): |
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572 self.parttype = parttype |
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573 self.params = params |
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574 self.values = values |
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575 if self.parttype is None: |
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576 msg = b'Stream Parameter' |
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577 else: |
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578 msg = parttype |
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579 entries = self.params |
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580 if self.params and self.values: |
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581 assert len(self.params) == len(self.values) |
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582 entries = [] |
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583 for idx, par in enumerate(self.params): |
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584 val = self.values[idx] |
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585 if val is None: |
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586 entries.append(val) |
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587 else: |
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588 entries.append(b"%s=%r" % (par, pycompat.maybebytestr(val))) |
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589 if entries: |
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590 msg = b'%s - %s' % (msg, b', '.join(entries)) |
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591 ValueError.__init__(self, msg) # TODO: convert to str? |
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592 |
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593 |
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594 class ReadOnlyPartError(RuntimeError): |
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595 """error raised when code tries to alter a part being generated""" |
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596 |
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597 __bytes__ = _tobytes |
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598 |
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599 |
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|
600 class PushkeyFailed(Abort): |
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601 """error raised when a pushkey part failed to update a value""" |
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602 |
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603 def __init__( |
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604 self, partid, namespace=None, key=None, new=None, old=None, ret=None |
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605 ): |
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606 self.partid = partid |
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607 self.namespace = namespace |
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608 self.key = key |
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609 self.new = new |
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610 self.old = old |
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611 self.ret = ret |
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612 # no i18n expected to be processed into a better message |
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613 Abort.__init__( |
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614 self, b'failed to update value for "%s/%s"' % (namespace, key) |
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615 ) |
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616 |
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617 |
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618 class CensoredNodeError(StorageError): |
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619 """error raised when content verification fails on a censored node |
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620 |
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621 Also contains the tombstone data substituted for the uncensored data. |
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622 """ |
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623 |
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624 def __init__(self, filename: bytes, node: bytes, tombstone: bytes): |
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625 from .node import short |
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626 |
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627 StorageError.__init__(self, b'%s:%s' % (filename, short(node))) |
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628 self.tombstone = tombstone |
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629 |
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630 |
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631 class CensoredBaseError(StorageError): |
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632 """error raised when a delta is rejected because its base is censored |
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633 |
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634 A delta based on a censored revision must be formed as single patch |
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635 operation which replaces the entire base with new content. This ensures |
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636 the delta may be applied by clones which have not censored the base. |
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637 """ |
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638 |
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639 |
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640 class InvalidBundleSpecification(Exception): |
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641 """error raised when a bundle specification is invalid. |
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642 |
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643 This is used for syntax errors as opposed to support errors. |
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644 """ |
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645 |
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646 __bytes__ = _tobytes |
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647 |
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648 |
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649 class UnsupportedBundleSpecification(Exception): |
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650 """error raised when a bundle specification is not supported.""" |
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651 |
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652 __bytes__ = _tobytes |
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653 |
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654 |
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655 class CorruptedState(Exception): |
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656 """error raised when a command is not able to read its state from file""" |
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657 |
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658 __bytes__ = _tobytes |
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659 |
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660 |
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661 class CorruptedDirstate(Exception): |
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662 """error raised the dirstate appears corrupted on-disk. It may be due to |
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663 a dirstate version mismatch (i.e. expecting v2 and finding v1 on disk).""" |
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664 |
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665 __bytes__ = _tobytes |
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666 |
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667 |
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668 class PeerTransportError(Abort): |
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669 """Transport-level I/O error when communicating with a peer repo.""" |
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670 |
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671 |
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672 class InMemoryMergeConflictsError(Exception): |
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673 """Exception raised when merge conflicts arose during an in-memory merge.""" |
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674 |
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675 __bytes__ = _tobytes |
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676 |
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677 |
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678 class WireprotoCommandError(Exception): |
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679 """Represents an error during execution of a wire protocol command. |
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680 |
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681 Should only be thrown by wire protocol version 2 commands. |
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682 |
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683 The error is a formatter string and an optional iterable of arguments. |
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684 """ |
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685 |
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686 def __init__( |
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687 self, |
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688 message: bytes, |
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689 args: Optional[Sequence[bytes]] = None, |
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690 ) -> None: |
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691 self.message = message |
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692 self.messageargs = args |