Mercurial > hg
annotate mercurial/error.py @ 50896:b2b8c25f9462
hgwebmod: use sysstr to check for attribute presence
We do not need bytes here.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Wed, 30 Aug 2023 13:28:09 +0200 |
parents | bf16ef96defe |
children | 9d3721552b6c |
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 |
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15 import difflib |
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16 |
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17 # Do not import anything but pycompat here, please |
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18 from . import pycompat |
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19 |
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20 if pycompat.TYPE_CHECKING: |
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21 from typing import ( |
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22 Any, |
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23 AnyStr, |
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24 Iterable, |
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25 List, |
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26 Optional, |
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27 Sequence, |
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28 Union, |
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29 ) |
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30 |
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31 |
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32 def _tobytes(exc): |
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33 # type: (...) -> bytes |
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34 """Byte-stringify exception in the same way as BaseException_str()""" |
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35 if not exc.args: |
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36 return b'' |
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37 if len(exc.args) == 1: |
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38 return pycompat.bytestr(exc.args[0]) |
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39 return b'(%s)' % b', '.join(b"'%s'" % pycompat.bytestr(a) for a in exc.args) |
7633 | 40 |
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41 |
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42 class Hint: |
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43 """Mix-in to provide a hint of an error |
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44 |
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45 This should come first in the inheritance list to consume a hint and |
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46 pass remaining arguments to the exception class. |
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47 """ |
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48 |
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49 def __init__(self, *args, **kw): |
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50 self.hint = kw.pop('hint', None) # type: Optional[bytes] |
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51 super(Hint, self).__init__(*args, **kw) |
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52 |
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53 |
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54 class Error(Hint, Exception): |
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55 """Base class for Mercurial errors.""" |
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56 |
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57 coarse_exit_code = None |
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58 detailed_exit_code = None |
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59 |
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60 def __init__(self, message, hint=None): |
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61 # type: (bytes, Optional[bytes]) -> None |
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62 self.message = message |
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63 self.hint = hint |
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64 # Pass the message into the Exception constructor to help extensions |
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65 # that look for exc.args[0]. |
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66 Exception.__init__(self, message) |
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67 |
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68 def __bytes__(self): |
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69 return self.message |
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70 |
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71 def __str__(self): |
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72 # type: () -> str |
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73 # the output would be unreadable if the message was translated, |
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74 # but do not replace it with encoding.strfromlocal(), which |
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75 # may raise another exception. |
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76 return pycompat.sysstr(self.__bytes__()) |
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77 |
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78 def format(self): |
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79 # type: () -> bytes |
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80 from .i18n import _ |
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81 |
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82 message = _(b"abort: %s\n") % self.message |
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83 if self.hint: |
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84 message += _(b"(%s)\n") % self.hint |
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85 return message |
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86 |
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87 |
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88 class Abort(Error): |
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89 """Raised if a command needs to print an error and exit.""" |
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90 |
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91 |
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92 class StorageError(Error): |
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93 """Raised when an error occurs in a storage layer. |
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94 |
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95 Usually subclassed by a storage-specific exception. |
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96 """ |
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97 |
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98 detailed_exit_code = 50 |
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99 |
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100 |
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101 class RevlogError(StorageError): |
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102 pass |
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104 |
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105 class SidedataHashError(RevlogError): |
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106 def __init__(self, key, expected, got): |
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107 # type: (int, bytes, bytes) -> None |
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108 self.hint = None |
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109 self.sidedatakey = key |
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110 self.expecteddigest = expected |
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111 self.actualdigest = got |
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112 |
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113 |
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114 class FilteredIndexError(IndexError): |
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115 __bytes__ = _tobytes |
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116 |
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117 |
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119 def __init__(self, name, index, message): | |
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120 # type: (bytes, bytes, bytes) -> None |
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122 self.index = index |
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123 # this can't be called 'message' because at least some installs of |
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124 # Python 2.6+ complain about the 'message' property being deprecated |
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125 self.lookupmessage = message |
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126 if isinstance(name, bytes) and len(name) == 20: |
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127 from .node import hex |
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128 |
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129 name = hex(name) |
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130 # if name is a binary node, it can be None |
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131 RevlogError.__init__( |
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132 self, b'%s@%s: %s' % (index, pycompat.bytestr(name), message) |
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133 ) |
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135 def __bytes__(self): |
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136 return RevlogError.__bytes__(self) |
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137 |
7633 | 138 def __str__(self): |
139 return RevlogError.__str__(self) | |
7636 | 140 |
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141 |
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142 class AmbiguousPrefixLookupError(LookupError): |
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143 pass |
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144 |
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145 |
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146 class FilteredLookupError(LookupError): |
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147 pass |
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148 |
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149 |
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150 class ManifestLookupError(LookupError): |
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151 pass |
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152 |
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153 |
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154 class CommandError(Exception): |
7636 | 155 """Exception raised on errors in parsing the command line.""" |
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156 |
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157 def __init__(self, command, message): |
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158 # type: (Optional[bytes], bytes) -> None |
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159 self.command = command |
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160 self.message = message |
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161 super(CommandError, self).__init__() |
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162 |
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163 __bytes__ = _tobytes |
7637 | 164 |
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165 |
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166 class UnknownCommand(Exception): |
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167 """Exception raised if command is not in the command table.""" |
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168 |
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169 def __init__(self, command, all_commands=None): |
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170 # type: (bytes, Optional[List[bytes]]) -> None |
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171 self.command = command |
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172 self.all_commands = all_commands |
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173 super(UnknownCommand, self).__init__() |
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174 |
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175 __bytes__ = _tobytes |
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176 |
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177 |
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178 class AmbiguousCommand(Exception): |
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179 """Exception raised if command shortcut matches more than one command.""" |
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180 |
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181 def __init__(self, prefix, matches): |
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182 # type: (bytes, List[bytes]) -> None |
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183 self.prefix = prefix |
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184 self.matches = matches |
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185 super(AmbiguousCommand, self).__init__() |
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186 |
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187 __bytes__ = _tobytes |
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188 |
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189 |
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190 class WorkerError(Exception): |
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191 """Exception raised when a worker process dies.""" |
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192 |
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193 def __init__(self, status_code): |
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194 # type: (int) -> None |
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195 self.status_code = status_code |
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196 # Pass status code to superclass just so it becomes part of __bytes__ |
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197 super(WorkerError, self).__init__(status_code) |
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198 |
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199 __bytes__ = _tobytes |
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200 |
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201 |
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202 class InterventionRequired(Abort): |
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203 """Exception raised when a command requires human intervention.""" |
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204 |
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205 coarse_exit_code = 1 |
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206 detailed_exit_code = 240 |
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207 |
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208 def format(self): |
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209 # type: () -> bytes |
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210 from .i18n import _ |
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211 |
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212 message = _(b"%s\n") % self.message |
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213 if self.hint: |
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214 message += _(b"(%s)\n") % self.hint |
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215 return message |
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216 |
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217 |
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218 class ConflictResolutionRequired(InterventionRequired): |
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219 """Exception raised when a continuable command required merge conflict resolution.""" |
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220 |
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221 def __init__(self, opname): |
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222 # type: (bytes) -> None |
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223 from .i18n import _ |
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224 |
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225 self.opname = opname |
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226 InterventionRequired.__init__( |
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227 self, |
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228 _( |
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229 b"unresolved conflicts (see 'hg resolve', then 'hg %s --continue')" |
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230 ) |
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231 % opname, |
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232 ) |
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233 |
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234 |
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235 class InputError(Abort): |
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236 """Indicates that the user made an error in their input. |
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237 |
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238 Examples: Invalid command, invalid flags, invalid revision. |
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239 """ |
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240 |
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241 detailed_exit_code = 10 |
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242 |
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243 |
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244 class StateError(Abort): |
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245 """Indicates that the operation might work if retried in a different state. |
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246 |
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247 Examples: Unresolved merge conflicts, unfinished operations. |
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248 """ |
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249 |
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250 detailed_exit_code = 20 |
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251 |
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252 |
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253 class CanceledError(Abort): |
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254 """Indicates that the user canceled the operation. |
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255 |
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256 Examples: Close commit editor with error status, quit chistedit. |
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257 """ |
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258 |
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259 detailed_exit_code = 250 |
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260 |
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261 |
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262 class SecurityError(Abort): |
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263 """Indicates that some aspect of security failed. |
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264 |
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265 Examples: Bad server credentials, expired local credentials for network |
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266 filesystem, mismatched GPG signature, DoS protection. |
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267 """ |
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268 |
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269 detailed_exit_code = 150 |
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270 |
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271 |
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272 class HookLoadError(Abort): |
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273 """raised when loading a hook fails, aborting an operation |
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274 |
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275 Exists to allow more specialized catching.""" |
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276 |
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277 |
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278 class HookAbort(Abort): |
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279 """raised when a validation hook fails, aborting an operation |
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280 |
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281 Exists to allow more specialized catching.""" |
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282 |
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283 detailed_exit_code = 40 |
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284 |
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285 |
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286 class ConfigError(Abort): |
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287 """Exception raised when parsing config files""" |
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288 |
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289 detailed_exit_code = 30 |
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290 |
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291 def __init__(self, message, location=None, hint=None): |
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292 # type: (bytes, Optional[bytes], Optional[bytes]) -> None |
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293 super(ConfigError, self).__init__(message, hint=hint) |
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294 self.location = location |
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295 |
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296 def format(self): |
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297 # type: () -> bytes |
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298 from .i18n import _ |
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299 |
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300 if self.location is not None: |
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301 message = _(b"config error at %s: %s\n") % ( |
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302 pycompat.bytestr(self.location), |
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303 self.message, |
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304 ) |
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305 else: |
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306 message = _(b"config error: %s\n") % self.message |
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307 if self.hint: |
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308 message += _(b"(%s)\n") % self.hint |
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309 return message |
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310 |
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311 |
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312 class UpdateAbort(Abort): |
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313 """Raised when an update is aborted for destination issue""" |
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314 |
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315 |
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316 class MergeDestAbort(Abort): |
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317 """Raised when an update is aborted for destination issues""" |
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318 |
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319 |
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320 class NoMergeDestAbort(MergeDestAbort): |
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321 """Raised when an update is aborted because there is nothing to merge""" |
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322 |
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323 |
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324 class ManyMergeDestAbort(MergeDestAbort): |
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325 """Raised when an update is aborted because destination is ambiguous""" |
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326 |
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327 |
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328 class ResponseExpected(Abort): |
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329 """Raised when an EOF is received for a prompt""" |
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330 |
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331 def __init__(self): |
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332 from .i18n import _ |
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333 |
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334 Abort.__init__(self, _(b'response expected')) |
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335 |
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336 |
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337 class RemoteError(Abort): |
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338 """Exception raised when interacting with a remote repo fails""" |
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339 |
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340 detailed_exit_code = 100 |
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341 |
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342 |
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343 class OutOfBandError(RemoteError): |
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344 """Exception raised when a remote repo reports failure""" |
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345 |
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346 def __init__(self, message=None, hint=None): |
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347 # type: (Optional[bytes], Optional[bytes]) -> None |
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348 from .i18n import _ |
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349 |
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350 if message: |
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351 # Abort.format() adds a trailing newline |
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352 message = _(b"remote error:\n%s") % message.rstrip(b'\n') |
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353 else: |
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354 message = _(b"remote error") |
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355 super(OutOfBandError, self).__init__(message, hint=hint) |
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356 |
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357 |
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358 class ParseError(Abort): |
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359 """Raised when parsing config files and {rev,file}sets (msg[, pos])""" |
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360 |
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361 detailed_exit_code = 10 |
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362 |
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363 def __init__(self, message, location=None, hint=None): |
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364 # type: (bytes, Optional[Union[bytes, int]], Optional[bytes]) -> None |
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365 super(ParseError, self).__init__(message, hint=hint) |
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366 self.location = location |
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367 |
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368 def format(self): |
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369 # type: () -> 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, value): |
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397 # type: (Iterable[bytes], bytes) -> List[bytes] |
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398 sim = lambda x: difflib.SequenceMatcher(None, value, x).ratio() |
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399 # The cutoff for similarity here is pretty arbitrary. It should |
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400 # probably be investigated and tweaked. |
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401 return [s for s in symbols if sim(s) > 0.6] |
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402 |
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403 |
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404 def similarity_hint(similar): |
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405 # type: (List[bytes]) -> Optional[bytes] |
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406 from .i18n import _ |
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407 |
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408 if len(similar) == 1: |
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409 return _(b"did you mean %s?") % similar[0] |
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410 elif similar: |
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411 ss = b", ".join(sorted(similar)) |
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412 return _(b"did you mean one of %s?") % ss |
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413 else: |
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414 return None |
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415 |
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416 |
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417 class UnknownIdentifier(ParseError): |
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418 """Exception raised when a {rev,file}set references an unknown identifier""" |
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419 |
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420 def __init__(self, function, symbols): |
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421 # type: (bytes, Iterable[bytes]) -> None |
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422 from .i18n import _ |
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423 |
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424 similar = getsimilar(symbols, function) |
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425 hint = similarity_hint(similar) |
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426 |
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427 ParseError.__init__( |
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428 self, _(b"unknown identifier: %s") % function, hint=hint |
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429 ) |
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430 |
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431 |
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432 class RepoError(Hint, Exception): |
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433 __bytes__ = _tobytes |
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435 |
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436 class RepoLookupError(RepoError): |
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437 pass |
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438 |
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439 |
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440 class FilteredRepoLookupError(RepoLookupError): |
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441 pass |
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442 |
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443 |
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445 pass | |
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447 |
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448 class RequirementError(RepoError): |
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449 """Exception raised if .hg/requires has an unknown entry.""" |
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450 |
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451 |
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452 class StdioError(IOError): |
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453 """Raised if I/O to stdout or stderr fails""" |
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454 |
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455 def __init__(self, err): |
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456 # type: (IOError) -> None |
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457 IOError.__init__(self, err.errno, err.strerror) |
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458 |
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459 # no __bytes__() because error message is derived from the standard IOError |
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460 |
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461 |
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462 class UnsupportedMergeRecords(Abort): |
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463 def __init__(self, recordtypes): |
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464 # type: (Iterable[bytes]) -> None |
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465 from .i18n import _ |
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466 |
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467 self.recordtypes = sorted(recordtypes) |
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468 s = b' '.join(self.recordtypes) |
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469 Abort.__init__( |
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470 self, |
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471 _(b'unsupported merge state records: %s') % s, |
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472 hint=_( |
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473 b'see https://mercurial-scm.org/wiki/MergeStateRecords for ' |
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474 b'more information' |
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475 ), |
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476 ) |
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477 |
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478 |
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479 class UnknownVersion(Abort): |
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480 """generic exception for aborting from an encounter with an unknown version""" |
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481 |
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482 def __init__(self, msg, hint=None, version=None): |
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483 # type: (bytes, Optional[bytes], Optional[bytes]) -> None |
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484 self.version = version |
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485 super(UnknownVersion, self).__init__(msg, hint=hint) |
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486 |
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487 |
7640 | 488 class LockError(IOError): |
489 def __init__(self, errno, strerror, filename, desc): | |
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490 # TODO: figure out if this should be bytes or str |
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491 # _type: (int, str, str, bytes) -> None |
7640 | 492 IOError.__init__(self, errno, strerror, filename) |
493 self.desc = desc | |
494 | |
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495 # no __bytes__() because error message is derived from the standard IOError |
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496 |
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497 |
7640 | 498 class LockHeld(LockError): |
499 def __init__(self, errno, filename, desc, locker): | |
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500 LockError.__init__(self, errno, b'Lock held', filename, desc) |
7640 | 501 self.locker = locker |
502 | |
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503 |
7640 | 504 class LockUnavailable(LockError): |
505 pass | |
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506 |
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507 |
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508 # LockError is for errors while acquiring the lock -- this is unrelated |
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509 class LockInheritanceContractViolation(RuntimeError): |
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510 __bytes__ = _tobytes |
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511 |
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512 |
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513 class ResponseError(Exception): |
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514 """Raised to print an error with part of output and exit.""" |
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515 |
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516 __bytes__ = _tobytes |
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517 |
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518 |
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519 # derived from KeyboardInterrupt to simplify some breakout code |
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520 class SignalInterrupt(KeyboardInterrupt): |
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521 """Exception raised on SIGTERM and SIGHUP.""" |
7646 | 522 |
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523 |
7646 | 524 class SignatureError(Exception): |
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525 __bytes__ = _tobytes |
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526 |
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527 |
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528 class PushRaced(RuntimeError): |
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529 """An exception raised during unbundling that indicate a push race""" |
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530 |
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531 __bytes__ = _tobytes |
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532 |
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533 |
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534 class ProgrammingError(Hint, RuntimeError): |
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535 """Raised if a mercurial (core or extension) developer made a mistake""" |
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536 |
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537 def __init__(self, msg, *args, **kwargs): |
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538 # type: (AnyStr, Any, Any) -> None |
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539 # On Python 3, turn the message back into a string since this is |
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540 # an internal-only error that won't be printed except in a |
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541 # stack traces. |
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542 msg = pycompat.sysstr(msg) |
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543 super(ProgrammingError, self).__init__(msg, *args, **kwargs) |
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544 |
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545 __bytes__ = _tobytes |
30573 | 546 |
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547 |
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548 class WdirUnsupported(Exception): |
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549 """An exception which is raised when 'wdir()' is not supported""" |
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550 |
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551 __bytes__ = _tobytes |
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552 |
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553 |
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554 # bundle2 related errors |
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555 class BundleValueError(ValueError): |
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556 """error raised when bundle2 cannot be processed""" |
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557 |
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558 __bytes__ = _tobytes |
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559 |
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560 |
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561 class BundleUnknownFeatureError(BundleValueError): |
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562 def __init__(self, parttype=None, params=(), values=()): |
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563 self.parttype = parttype |
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564 self.params = params |
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565 self.values = values |
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566 if self.parttype is None: |
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567 msg = b'Stream Parameter' |
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568 else: |
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569 msg = parttype |
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570 entries = self.params |
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571 if self.params and self.values: |
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572 assert len(self.params) == len(self.values) |
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573 entries = [] |
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574 for idx, par in enumerate(self.params): |
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575 val = self.values[idx] |
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576 if val is None: |
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577 entries.append(val) |
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578 else: |
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579 entries.append(b"%s=%r" % (par, pycompat.maybebytestr(val))) |
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580 if entries: |
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581 msg = b'%s - %s' % (msg, b', '.join(entries)) |
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582 ValueError.__init__(self, msg) # TODO: convert to str? |
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583 |
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584 |
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585 class ReadOnlyPartError(RuntimeError): |
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586 """error raised when code tries to alter a part being generated""" |
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587 |
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588 __bytes__ = _tobytes |
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589 |
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590 |
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591 class PushkeyFailed(Abort): |
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592 """error raised when a pushkey part failed to update a value""" |
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593 |
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594 def __init__( |
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595 self, partid, namespace=None, key=None, new=None, old=None, ret=None |
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596 ): |
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597 self.partid = partid |
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598 self.namespace = namespace |
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599 self.key = key |
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|
600 self.new = new |
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601 self.old = old |
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602 self.ret = ret |
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603 # no i18n expected to be processed into a better message |
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604 Abort.__init__( |
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605 self, b'failed to update value for "%s/%s"' % (namespace, key) |
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606 ) |
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607 |
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608 |
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609 class CensoredNodeError(StorageError): |
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610 """error raised when content verification fails on a censored node |
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611 |
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612 Also contains the tombstone data substituted for the uncensored data. |
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613 """ |
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614 |
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615 def __init__(self, filename, node, tombstone): |
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616 # type: (bytes, bytes, bytes) -> None |
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617 from .node import short |
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618 |
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619 StorageError.__init__(self, b'%s:%s' % (filename, short(node))) |
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620 self.tombstone = tombstone |
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621 |
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622 |
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623 class CensoredBaseError(StorageError): |
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624 """error raised when a delta is rejected because its base is censored |
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625 |
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626 A delta based on a censored revision must be formed as single patch |
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627 operation which replaces the entire base with new content. This ensures |
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628 the delta may be applied by clones which have not censored the base. |
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629 """ |
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630 |
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631 |
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632 class InvalidBundleSpecification(Exception): |
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633 """error raised when a bundle specification is invalid. |
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634 |
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635 This is used for syntax errors as opposed to support errors. |
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636 """ |
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637 |
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638 __bytes__ = _tobytes |
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639 |
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640 |
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641 class UnsupportedBundleSpecification(Exception): |
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642 """error raised when a bundle specification is not supported.""" |
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643 |
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644 __bytes__ = _tobytes |
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645 |
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646 |
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647 class CorruptedState(Exception): |
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648 """error raised when a command is not able to read its state from file""" |
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649 |
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650 __bytes__ = _tobytes |
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651 |
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652 |
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653 class CorruptedDirstate(Exception): |
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654 """error raised the dirstate appears corrupted on-disk. It may be due to |
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655 a dirstate version mismatch (i.e. expecting v2 and finding v1 on disk).""" |
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656 |
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657 __bytes__ = _tobytes |
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658 |
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659 |
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660 class PeerTransportError(Abort): |
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661 """Transport-level I/O error when communicating with a peer repo.""" |
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662 |
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663 |
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664 class InMemoryMergeConflictsError(Exception): |
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665 """Exception raised when merge conflicts arose during an in-memory merge.""" |
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666 |
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667 __bytes__ = _tobytes |
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668 |
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669 |
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670 class WireprotoCommandError(Exception): |
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671 """Represents an error during execution of a wire protocol command. |
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672 |
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673 Should only be thrown by wire protocol version 2 commands. |
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674 |
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675 The error is a formatter string and an optional iterable of arguments. |
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676 """ |
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677 |
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678 def __init__(self, message, args=None): |
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679 # type: (bytes, Optional[Sequence[bytes]]) -> None |
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680 self.message = message |
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681 self.messageargs = args |