Mercurial > hg
annotate mercurial/error.py @ 48710:b0aa9b0b9c21
convert: use the merge action constant
The constant exists, lets use them. Otherwise we cannot make these constant more
powerful.
Differential Revision: https://phab.mercurial-scm.org/D12113
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Fri, 28 Jan 2022 16:25:41 +0100 |
parents | 6a454e7053a1 |
children | 6000f5b25c9b |
rev | line source |
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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 absolute_import |
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15 |
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16 import difflib |
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17 |
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18 # Do not import anything but pycompat here, please |
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19 from . import pycompat |
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20 |
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21 if pycompat.TYPE_CHECKING: |
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22 from typing import ( |
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23 Any, |
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24 AnyStr, |
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25 Iterable, |
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26 List, |
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27 Optional, |
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28 Sequence, |
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29 Union, |
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30 ) |
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31 |
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32 |
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33 def _tobytes(exc): |
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34 # type: (...) -> bytes |
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35 """Byte-stringify exception in the same way as BaseException_str()""" |
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36 if not exc.args: |
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37 return b'' |
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38 if len(exc.args) == 1: |
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39 return pycompat.bytestr(exc.args[0]) |
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40 return b'(%s)' % b', '.join(b"'%s'" % pycompat.bytestr(a) for a in exc.args) |
7633 | 41 |
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42 |
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43 class Hint(object): |
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44 """Mix-in to provide a hint of an error |
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45 |
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46 This should come first in the inheritance list to consume a hint and |
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47 pass remaining arguments to the exception class. |
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48 """ |
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49 |
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50 def __init__(self, *args, **kw): |
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51 self.hint = kw.pop('hint', None) # type: Optional[bytes] |
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52 super(Hint, self).__init__(*args, **kw) |
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53 |
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54 |
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55 class Error(Hint, Exception): |
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56 """Base class for Mercurial errors.""" |
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57 |
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58 coarse_exit_code = None |
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59 detailed_exit_code = None |
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60 |
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61 def __init__(self, message, hint=None): |
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62 # type: (bytes, Optional[bytes]) -> None |
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63 self.message = message |
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64 self.hint = hint |
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65 # Pass the message into the Exception constructor to help extensions |
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66 # that look for exc.args[0]. |
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67 Exception.__init__(self, message) |
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68 |
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69 def __bytes__(self): |
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70 return self.message |
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71 |
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72 if pycompat.ispy3: |
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73 |
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74 def __str__(self): |
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75 # type: () -> str |
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76 # the output would be unreadable if the message was translated, |
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77 # but do not replace it with encoding.strfromlocal(), which |
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78 # may raise another exception. |
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79 return pycompat.sysstr(self.__bytes__()) |
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80 |
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81 def format(self): |
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82 # type: () -> bytes |
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83 from .i18n import _ |
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84 |
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85 message = _(b"abort: %s\n") % self.message |
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86 if self.hint: |
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87 message += _(b"(%s)\n") % self.hint |
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88 return message |
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89 |
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90 |
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91 class Abort(Error): |
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92 """Raised if a command needs to print an error and exit.""" |
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93 |
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94 |
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95 class StorageError(Error): |
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96 """Raised when an error occurs in a storage layer. |
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97 |
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98 Usually subclassed by a storage-specific exception. |
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99 """ |
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100 |
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101 detailed_exit_code = 50 |
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102 |
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103 |
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104 class RevlogError(StorageError): |
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105 pass |
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107 |
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108 class SidedataHashError(RevlogError): |
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109 def __init__(self, key, expected, got): |
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110 # type: (int, bytes, bytes) -> None |
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111 self.hint = None |
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112 self.sidedatakey = key |
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113 self.expecteddigest = expected |
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114 self.actualdigest = got |
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115 |
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116 |
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117 class FilteredIndexError(IndexError): |
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118 __bytes__ = _tobytes |
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119 |
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120 |
7633 | 121 class LookupError(RevlogError, KeyError): |
122 def __init__(self, name, index, message): | |
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123 # type: (bytes, bytes, bytes) -> None |
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125 self.index = index |
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126 # this can't be called 'message' because at least some installs of |
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127 # Python 2.6+ complain about the 'message' property being deprecated |
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128 self.lookupmessage = message |
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129 if isinstance(name, bytes) and len(name) == 20: |
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130 from .node import hex |
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131 |
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132 name = hex(name) |
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133 # if name is a binary node, it can be None |
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134 RevlogError.__init__( |
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135 self, b'%s@%s: %s' % (index, pycompat.bytestr(name), message) |
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136 ) |
7633 | 137 |
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138 def __bytes__(self): |
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139 return RevlogError.__bytes__(self) |
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140 |
7633 | 141 def __str__(self): |
142 return RevlogError.__str__(self) | |
7636 | 143 |
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144 |
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145 class AmbiguousPrefixLookupError(LookupError): |
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146 pass |
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147 |
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148 |
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149 class FilteredLookupError(LookupError): |
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150 pass |
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151 |
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152 |
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153 class ManifestLookupError(LookupError): |
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154 pass |
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155 |
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156 |
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157 class CommandError(Exception): |
7636 | 158 """Exception raised on errors in parsing the command line.""" |
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159 |
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160 def __init__(self, command, message): |
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161 # type: (bytes, bytes) -> None |
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162 self.command = command |
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163 self.message = message |
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164 super(CommandError, self).__init__() |
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165 |
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166 __bytes__ = _tobytes |
7637 | 167 |
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168 |
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169 class UnknownCommand(Exception): |
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170 """Exception raised if command is not in the command table.""" |
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171 |
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172 def __init__(self, command, all_commands=None): |
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173 # type: (bytes, Optional[List[bytes]]) -> None |
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174 self.command = command |
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175 self.all_commands = all_commands |
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176 super(UnknownCommand, self).__init__() |
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177 |
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178 __bytes__ = _tobytes |
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179 |
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180 |
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181 class AmbiguousCommand(Exception): |
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182 """Exception raised if command shortcut matches more than one command.""" |
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183 |
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184 def __init__(self, prefix, matches): |
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185 # type: (bytes, List[bytes]) -> None |
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186 self.prefix = prefix |
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187 self.matches = matches |
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188 super(AmbiguousCommand, self).__init__() |
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189 |
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190 __bytes__ = _tobytes |
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191 |
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192 |
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193 class WorkerError(Exception): |
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194 """Exception raised when a worker process dies.""" |
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195 |
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196 def __init__(self, status_code): |
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197 # type: (int) -> None |
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198 self.status_code = status_code |
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199 # Pass status code to superclass just so it becomes part of __bytes__ |
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200 super(WorkerError, self).__init__(status_code) |
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201 |
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202 __bytes__ = _tobytes |
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203 |
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204 |
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205 class InterventionRequired(Abort): |
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206 """Exception raised when a command requires human intervention.""" |
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207 |
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208 coarse_exit_code = 1 |
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209 detailed_exit_code = 240 |
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210 |
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211 def format(self): |
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212 # type: () -> bytes |
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213 from .i18n import _ |
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214 |
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215 message = _(b"%s\n") % self.message |
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216 if self.hint: |
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217 message += _(b"(%s)\n") % self.hint |
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218 return message |
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219 |
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220 |
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221 class ConflictResolutionRequired(InterventionRequired): |
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222 """Exception raised when a continuable command required merge conflict resolution.""" |
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223 |
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224 def __init__(self, opname): |
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225 # type: (bytes) -> None |
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226 from .i18n import _ |
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227 |
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228 self.opname = opname |
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229 InterventionRequired.__init__( |
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230 self, |
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231 _( |
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232 b"unresolved conflicts (see 'hg resolve', then 'hg %s --continue')" |
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233 ) |
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234 % opname, |
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235 ) |
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236 |
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237 |
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238 class InputError(Abort): |
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239 """Indicates that the user made an error in their input. |
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240 |
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241 Examples: Invalid command, invalid flags, invalid revision. |
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242 """ |
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243 |
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244 detailed_exit_code = 10 |
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245 |
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246 |
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247 class StateError(Abort): |
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248 """Indicates that the operation might work if retried in a different state. |
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249 |
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250 Examples: Unresolved merge conflicts, unfinished operations. |
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251 """ |
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252 |
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253 detailed_exit_code = 20 |
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254 |
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255 |
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256 class CanceledError(Abort): |
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257 """Indicates that the user canceled the operation. |
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258 |
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259 Examples: Close commit editor with error status, quit chistedit. |
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260 """ |
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261 |
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262 detailed_exit_code = 250 |
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263 |
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264 |
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265 class SecurityError(Abort): |
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266 """Indicates that some aspect of security failed. |
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267 |
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268 Examples: Bad server credentials, expired local credentials for network |
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269 filesystem, mismatched GPG signature, DoS protection. |
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270 """ |
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271 |
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272 detailed_exit_code = 150 |
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273 |
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274 |
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275 class HookLoadError(Abort): |
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276 """raised when loading a hook fails, aborting an operation |
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277 |
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278 Exists to allow more specialized catching.""" |
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279 |
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280 |
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281 class HookAbort(Abort): |
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282 """raised when a validation hook fails, aborting an operation |
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283 |
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284 Exists to allow more specialized catching.""" |
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285 |
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286 detailed_exit_code = 40 |
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287 |
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288 |
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289 class ConfigError(Abort): |
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290 """Exception raised when parsing config files""" |
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291 |
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292 detailed_exit_code = 30 |
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293 |
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294 def __init__(self, message, location=None, hint=None): |
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295 # type: (bytes, Optional[bytes], Optional[bytes]) -> None |
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296 super(ConfigError, self).__init__(message, hint=hint) |
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297 self.location = location |
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298 |
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299 def format(self): |
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300 # type: () -> bytes |
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301 from .i18n import _ |
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302 |
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303 if self.location is not None: |
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304 message = _(b"config error at %s: %s\n") % ( |
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305 pycompat.bytestr(self.location), |
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306 self.message, |
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307 ) |
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308 else: |
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309 message = _(b"config error: %s\n") % self.message |
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310 if self.hint: |
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311 message += _(b"(%s)\n") % self.hint |
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312 return message |
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313 |
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314 |
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315 class UpdateAbort(Abort): |
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316 """Raised when an update is aborted for destination issue""" |
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317 |
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318 |
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319 class MergeDestAbort(Abort): |
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320 """Raised when an update is aborted for destination issues""" |
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321 |
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322 |
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323 class NoMergeDestAbort(MergeDestAbort): |
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324 """Raised when an update is aborted because there is nothing to merge""" |
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325 |
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326 |
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327 class ManyMergeDestAbort(MergeDestAbort): |
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328 """Raised when an update is aborted because destination is ambiguous""" |
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329 |
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330 |
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331 class ResponseExpected(Abort): |
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332 """Raised when an EOF is received for a prompt""" |
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333 |
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334 def __init__(self): |
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335 from .i18n import _ |
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336 |
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337 Abort.__init__(self, _(b'response expected')) |
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338 |
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339 |
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340 class RemoteError(Abort): |
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341 """Exception raised when interacting with a remote repo fails""" |
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342 |
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343 detailed_exit_code = 100 |
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344 |
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345 |
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346 class OutOfBandError(RemoteError): |
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347 """Exception raised when a remote repo reports failure""" |
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348 |
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349 def __init__(self, message=None, hint=None): |
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350 # type: (Optional[bytes], Optional[bytes]) -> None |
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351 from .i18n import _ |
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352 |
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353 if message: |
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354 # Abort.format() adds a trailing newline |
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355 message = _(b"remote error:\n%s") % message.rstrip(b'\n') |
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356 else: |
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357 message = _(b"remote error") |
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358 super(OutOfBandError, self).__init__(message, hint=hint) |
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359 |
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360 |
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361 class ParseError(Abort): |
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362 """Raised when parsing config files and {rev,file}sets (msg[, pos])""" |
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363 |
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364 detailed_exit_code = 10 |
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365 |
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366 def __init__(self, message, location=None, hint=None): |
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367 # type: (bytes, Optional[Union[bytes, int]], Optional[bytes]) -> None |
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368 super(ParseError, self).__init__(message, hint=hint) |
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369 self.location = location |
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370 |
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371 def format(self): |
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372 # type: () -> bytes |
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373 from .i18n import _ |
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374 |
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375 if self.location is not None: |
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376 message = _(b"hg: parse error at %s: %s\n") % ( |
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377 pycompat.bytestr(self.location), |
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378 self.message, |
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379 ) |
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380 else: |
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381 message = _(b"hg: parse error: %s\n") % self.message |
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382 if self.hint: |
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383 message += _(b"(%s)\n") % self.hint |
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384 return message |
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385 |
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386 |
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387 class PatchError(Exception): |
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388 __bytes__ = _tobytes |
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389 |
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390 |
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391 class PatchParseError(PatchError): |
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392 __bytes__ = _tobytes |
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393 |
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394 |
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395 class PatchApplicationError(PatchError): |
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396 __bytes__ = _tobytes |
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397 |
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398 |
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399 def getsimilar(symbols, value): |
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400 # type: (Iterable[bytes], bytes) -> List[bytes] |
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401 sim = lambda x: difflib.SequenceMatcher(None, value, x).ratio() |
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402 # The cutoff for similarity here is pretty arbitrary. It should |
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403 # probably be investigated and tweaked. |
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404 return [s for s in symbols if sim(s) > 0.6] |
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405 |
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406 |
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407 def similarity_hint(similar): |
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408 # type: (List[bytes]) -> Optional[bytes] |
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409 from .i18n import _ |
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410 |
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411 if len(similar) == 1: |
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412 return _(b"did you mean %s?") % similar[0] |
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413 elif similar: |
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414 ss = b", ".join(sorted(similar)) |
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415 return _(b"did you mean one of %s?") % ss |
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416 else: |
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417 return None |
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418 |
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419 |
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420 class UnknownIdentifier(ParseError): |
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421 """Exception raised when a {rev,file}set references an unknown identifier""" |
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422 |
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423 def __init__(self, function, symbols): |
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424 # type: (bytes, Iterable[bytes]) -> None |
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425 from .i18n import _ |
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426 |
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427 similar = getsimilar(symbols, function) |
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428 hint = similarity_hint(similar) |
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429 |
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430 ParseError.__init__( |
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431 self, _(b"unknown identifier: %s") % function, hint=hint |
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432 ) |
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433 |
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434 |
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435 class RepoError(Hint, Exception): |
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436 __bytes__ = _tobytes |
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438 |
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439 class RepoLookupError(RepoError): |
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440 pass |
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441 |
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442 |
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443 class FilteredRepoLookupError(RepoLookupError): |
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444 pass |
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445 |
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446 |
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448 pass | |
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450 |
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451 class RequirementError(RepoError): |
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452 """Exception raised if .hg/requires has an unknown entry.""" |
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453 |
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454 |
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455 class StdioError(IOError): |
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456 """Raised if I/O to stdout or stderr fails""" |
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457 |
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458 def __init__(self, err): |
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459 # type: (IOError) -> None |
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460 IOError.__init__(self, err.errno, err.strerror) |
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461 |
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462 # no __bytes__() because error message is derived from the standard IOError |
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463 |
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464 |
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465 class UnsupportedMergeRecords(Abort): |
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466 def __init__(self, recordtypes): |
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467 # type: (Iterable[bytes]) -> None |
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468 from .i18n import _ |
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469 |
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470 self.recordtypes = sorted(recordtypes) |
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471 s = b' '.join(self.recordtypes) |
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472 Abort.__init__( |
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473 self, |
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474 _(b'unsupported merge state records: %s') % s, |
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475 hint=_( |
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476 b'see https://mercurial-scm.org/wiki/MergeStateRecords for ' |
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477 b'more information' |
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478 ), |
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479 ) |
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480 |
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481 |
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482 class UnknownVersion(Abort): |
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483 """generic exception for aborting from an encounter with an unknown version""" |
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484 |
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485 def __init__(self, msg, hint=None, version=None): |
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486 # type: (bytes, Optional[bytes], Optional[bytes]) -> None |
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487 self.version = version |
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488 super(UnknownVersion, self).__init__(msg, hint=hint) |
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489 |
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490 |
7640 | 491 class LockError(IOError): |
492 def __init__(self, errno, strerror, filename, desc): | |
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493 # TODO: figure out if this should be bytes or str |
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494 # _type: (int, str, str, bytes) -> 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): |
502 def __init__(self, errno, filename, desc, locker): | |
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503 LockError.__init__(self, errno, b'Lock held', filename, desc) |
7640 | 504 self.locker = locker |
505 | |
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506 |
7640 | 507 class LockUnavailable(LockError): |
508 pass | |
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509 |
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510 |
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511 # LockError is for errors while acquiring the lock -- this is unrelated |
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512 class LockInheritanceContractViolation(RuntimeError): |
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513 __bytes__ = _tobytes |
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514 |
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515 |
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516 class ResponseError(Exception): |
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517 """Raised to print an error with part of output and exit.""" |
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518 |
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519 __bytes__ = _tobytes |
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520 |
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521 |
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522 # derived from KeyboardInterrupt to simplify some breakout code |
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523 class SignalInterrupt(KeyboardInterrupt): |
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524 """Exception raised on SIGTERM and SIGHUP.""" |
7646 | 525 |
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526 |
7646 | 527 class SignatureError(Exception): |
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528 __bytes__ = _tobytes |
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529 |
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530 |
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531 class PushRaced(RuntimeError): |
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532 """An exception raised during unbundling that indicate a push race""" |
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533 |
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534 __bytes__ = _tobytes |
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535 |
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536 |
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537 class ProgrammingError(Hint, RuntimeError): |
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538 """Raised if a mercurial (core or extension) developer made a mistake""" |
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539 |
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540 def __init__(self, msg, *args, **kwargs): |
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541 # type: (AnyStr, Any, Any) -> None |
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542 # On Python 3, turn the message back into a string since this is |
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543 # an internal-only error that won't be printed except in a |
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544 # stack traces. |
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545 msg = pycompat.sysstr(msg) |
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546 super(ProgrammingError, self).__init__(msg, *args, **kwargs) |
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547 |
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548 __bytes__ = _tobytes |
30573 | 549 |
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550 |
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551 class WdirUnsupported(Exception): |
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552 """An exception which is raised when 'wdir()' is not supported""" |
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553 |
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554 __bytes__ = _tobytes |
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555 |
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556 |
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557 # bundle2 related errors |
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558 class BundleValueError(ValueError): |
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559 """error raised when bundle2 cannot be processed""" |
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560 |
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561 __bytes__ = _tobytes |
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562 |
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563 |
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564 class BundleUnknownFeatureError(BundleValueError): |
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565 def __init__(self, parttype=None, params=(), values=()): |
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566 self.parttype = parttype |
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567 self.params = params |
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568 self.values = values |
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569 if self.parttype is None: |
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570 msg = b'Stream Parameter' |
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571 else: |
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572 msg = parttype |
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573 entries = self.params |
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574 if self.params and self.values: |
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575 assert len(self.params) == len(self.values) |
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576 entries = [] |
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577 for idx, par in enumerate(self.params): |
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578 val = self.values[idx] |
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579 if val is None: |
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580 entries.append(val) |
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581 else: |
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582 entries.append(b"%s=%r" % (par, pycompat.maybebytestr(val))) |
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583 if entries: |
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584 msg = b'%s - %s' % (msg, b', '.join(entries)) |
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585 ValueError.__init__(self, msg) # TODO: convert to str? |
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586 |
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587 |
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588 class ReadOnlyPartError(RuntimeError): |
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589 """error raised when code tries to alter a part being generated""" |
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590 |
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591 __bytes__ = _tobytes |
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592 |
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593 |
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594 class PushkeyFailed(Abort): |
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595 """error raised when a pushkey part failed to update a value""" |
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596 |
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597 def __init__( |
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598 self, partid, namespace=None, key=None, new=None, old=None, ret=None |
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599 ): |
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600 self.partid = partid |
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|
601 self.namespace = namespace |
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602 self.key = key |
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603 self.new = new |
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604 self.old = old |
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605 self.ret = ret |
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606 # no i18n expected to be processed into a better message |
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607 Abort.__init__( |
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608 self, b'failed to update value for "%s/%s"' % (namespace, key) |
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609 ) |
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610 |
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611 |
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612 class CensoredNodeError(StorageError): |
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613 """error raised when content verification fails on a censored node |
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614 |
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615 Also contains the tombstone data substituted for the uncensored data. |
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616 """ |
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617 |
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618 def __init__(self, filename, node, tombstone): |
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619 # type: (bytes, bytes, bytes) -> None |
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620 from .node import short |
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621 |
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622 StorageError.__init__(self, b'%s:%s' % (filename, short(node))) |
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623 self.tombstone = tombstone |
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624 |
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625 |
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626 class CensoredBaseError(StorageError): |
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627 """error raised when a delta is rejected because its base is censored |
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628 |
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629 A delta based on a censored revision must be formed as single patch |
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630 operation which replaces the entire base with new content. This ensures |
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631 the delta may be applied by clones which have not censored the base. |
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632 """ |
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633 |
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634 |
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635 class InvalidBundleSpecification(Exception): |
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636 """error raised when a bundle specification is invalid. |
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637 |
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638 This is used for syntax errors as opposed to support errors. |
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639 """ |
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640 |
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641 __bytes__ = _tobytes |
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642 |
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643 |
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644 class UnsupportedBundleSpecification(Exception): |
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645 """error raised when a bundle specification is not supported.""" |
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646 |
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647 __bytes__ = _tobytes |
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648 |
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649 |
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650 class CorruptedState(Exception): |
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651 """error raised when a command is not able to read its state from file""" |
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652 |
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653 __bytes__ = _tobytes |
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654 |
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655 |
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656 class PeerTransportError(Abort): |
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657 """Transport-level I/O error when communicating with a peer repo.""" |
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658 |
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659 |
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660 class InMemoryMergeConflictsError(Exception): |
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661 """Exception raised when merge conflicts arose during an in-memory merge.""" |
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662 |
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663 __bytes__ = _tobytes |
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664 |
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665 |
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666 class WireprotoCommandError(Exception): |
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667 """Represents an error during execution of a wire protocol command. |
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668 |
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669 Should only be thrown by wire protocol version 2 commands. |
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670 |
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671 The error is a formatter string and an optional iterable of arguments. |
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672 """ |
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673 |
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674 def __init__(self, message, args=None): |
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675 # type: (bytes, Optional[Sequence[bytes]]) -> None |
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676 self.message = message |
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677 self.messageargs = args |