Mercurial > hg
annotate mercurial/error.py @ 46858:85e3a630cad9
revlog: move the details of revlog "v2" index inside revlog.utils.constants
the revlog module is quite large and this kind of format information would handy
for other module. So let us start to gather this information about the format in
a more appropriate place.
We update various reference to this information to use the new "source of truth"
in the process.
Differential Revision: https://phab.mercurial-scm.org/D10305
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 05 Apr 2021 12:21:12 +0200 |
parents | d4ba4d51f85f |
children | 8b6e36e4b553 |
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 Optional, |
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24 ) |
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26 |
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27 def _tobytes(exc): |
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28 """Byte-stringify exception in the same way as BaseException_str()""" |
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29 if not exc.args: |
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30 return b'' |
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31 if len(exc.args) == 1: |
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32 return pycompat.bytestr(exc.args[0]) |
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33 return b'(%s)' % b', '.join(b"'%s'" % pycompat.bytestr(a) for a in exc.args) |
7633 | 34 |
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35 |
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36 class Hint(object): |
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37 """Mix-in to provide a hint of an error |
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38 |
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39 This should come first in the inheritance list to consume a hint and |
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40 pass remaining arguments to the exception class. |
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41 """ |
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42 |
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43 def __init__(self, *args, **kw): |
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44 self.hint = kw.pop('hint', None) |
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45 super(Hint, self).__init__(*args, **kw) |
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46 |
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47 |
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48 class StorageError(Hint, Exception): |
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49 """Raised when an error occurs in a storage layer. |
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50 |
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51 Usually subclassed by a storage-specific exception. |
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52 """ |
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53 |
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54 __bytes__ = _tobytes |
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55 |
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56 |
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57 class RevlogError(StorageError): |
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58 pass |
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60 |
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61 class SidedataHashError(RevlogError): |
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62 def __init__(self, key, expected, got): |
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63 self.hint = None |
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64 self.sidedatakey = key |
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65 self.expecteddigest = expected |
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66 self.actualdigest = got |
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67 |
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68 |
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69 class FilteredIndexError(IndexError): |
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70 __bytes__ = _tobytes |
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71 |
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72 |
7633 | 73 class LookupError(RevlogError, KeyError): |
74 def __init__(self, name, index, message): | |
75 self.name = name | |
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76 self.index = index |
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77 # this can't be called 'message' because at least some installs of |
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78 # Python 2.6+ complain about the 'message' property being deprecated |
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79 self.lookupmessage = message |
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80 if isinstance(name, bytes) and len(name) == 20: |
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81 from .node import hex |
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82 |
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83 name = hex(name) |
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84 # if name is a binary node, it can be None |
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85 RevlogError.__init__( |
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86 self, b'%s@%s: %s' % (index, pycompat.bytestr(name), message) |
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87 ) |
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89 def __bytes__(self): |
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90 return RevlogError.__bytes__(self) |
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91 |
7633 | 92 def __str__(self): |
93 return RevlogError.__str__(self) | |
7636 | 94 |
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95 |
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96 class AmbiguousPrefixLookupError(LookupError): |
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97 pass |
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98 |
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99 |
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100 class FilteredLookupError(LookupError): |
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101 pass |
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102 |
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103 |
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104 class ManifestLookupError(LookupError): |
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105 pass |
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106 |
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107 |
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108 class CommandError(Exception): |
7636 | 109 """Exception raised on errors in parsing the command line.""" |
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110 |
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111 def __init__(self, command, message): |
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112 self.command = command |
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113 self.message = message |
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114 super(CommandError, self).__init__() |
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115 |
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116 __bytes__ = _tobytes |
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118 |
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119 class UnknownCommand(Exception): |
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120 """Exception raised if command is not in the command table.""" |
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121 |
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122 def __init__(self, command, all_commands=None): |
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123 self.command = command |
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124 self.all_commands = all_commands |
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125 super(UnknownCommand, self).__init__() |
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126 |
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127 __bytes__ = _tobytes |
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128 |
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129 |
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130 class AmbiguousCommand(Exception): |
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131 """Exception raised if command shortcut matches more than one command.""" |
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132 |
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133 def __init__(self, prefix, matches): |
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134 self.prefix = prefix |
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135 self.matches = matches |
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136 super(AmbiguousCommand, self).__init__() |
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137 |
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138 __bytes__ = _tobytes |
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139 |
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140 |
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141 class WorkerError(Exception): |
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142 """Exception raised when a worker process dies.""" |
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143 |
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144 def __init__(self, status_code): |
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145 self.status_code = status_code |
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146 # Pass status code to superclass just so it becomes part of __bytes__ |
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147 super(WorkerError, self).__init__(status_code) |
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148 |
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149 __bytes__ = _tobytes |
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150 |
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151 |
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152 class InterventionRequired(Hint, Exception): |
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153 """Exception raised when a command requires human intervention.""" |
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154 |
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155 __bytes__ = _tobytes |
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156 |
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157 |
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158 class ConflictResolutionRequired(InterventionRequired): |
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159 """Exception raised when a continuable command required merge conflict resolution.""" |
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160 |
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161 def __init__(self, opname): |
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162 from .i18n import _ |
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163 |
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164 self.opname = opname |
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165 InterventionRequired.__init__( |
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166 self, |
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167 _( |
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168 b"unresolved conflicts (see 'hg resolve', then 'hg %s --continue')" |
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169 ) |
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170 % opname, |
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171 ) |
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172 |
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173 |
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174 class Abort(Hint, Exception): |
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175 """Raised if a command needs to print an error and exit.""" |
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176 |
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177 def __init__(self, message, hint=None): |
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178 # type: (bytes, Optional[bytes]) -> None |
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179 self.message = message |
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180 self.hint = hint |
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181 # Pass the message into the Exception constructor to help extensions |
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182 # that look for exc.args[0]. |
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183 Exception.__init__(self, message) |
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184 |
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185 def __bytes__(self): |
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186 return self.message |
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187 |
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188 if pycompat.ispy3: |
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189 |
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190 def __str__(self): |
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191 # the output would be unreadable if the message was translated, |
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192 # but do not replace it with encoding.strfromlocal(), which |
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193 # may raise another exception. |
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194 return pycompat.sysstr(self.__bytes__()) |
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195 |
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196 def format(self): |
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197 from .i18n import _ |
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198 |
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199 message = _(b"abort: %s\n") % self.message |
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200 if self.hint: |
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201 message += _(b"(%s)\n") % self.hint |
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202 return message |
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203 |
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204 |
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205 class InputError(Abort): |
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206 """Indicates that the user made an error in their input. |
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207 |
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208 Examples: Invalid command, invalid flags, invalid revision. |
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209 """ |
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210 |
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211 |
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212 class StateError(Abort): |
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213 """Indicates that the operation might work if retried in a different state. |
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214 |
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215 Examples: Unresolved merge conflicts, unfinished operations. |
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216 """ |
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217 |
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218 |
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219 class CanceledError(Abort): |
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220 """Indicates that the user canceled the operation. |
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221 |
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222 Examples: Close commit editor with error status, quit chistedit. |
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223 """ |
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224 |
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225 |
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226 class SecurityError(Abort): |
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227 """Indicates that some aspect of security failed. |
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228 |
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229 Examples: Bad server credentials, expired local credentials for network |
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230 filesystem, mismatched GPG signature, DoS protection. |
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231 """ |
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232 |
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233 |
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234 class HookLoadError(Abort): |
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235 """raised when loading a hook fails, aborting an operation |
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236 |
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237 Exists to allow more specialized catching.""" |
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238 |
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239 |
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240 class HookAbort(Abort): |
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241 """raised when a validation hook fails, aborting an operation |
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242 |
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243 Exists to allow more specialized catching.""" |
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244 |
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245 |
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246 class ConfigError(Abort): |
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247 """Exception raised when parsing config files""" |
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248 |
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249 def __init__(self, message, location=None, hint=None): |
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250 super(ConfigError, self).__init__(message, hint=hint) |
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251 self.location = location |
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252 |
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253 def format(self): |
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254 from .i18n import _ |
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255 |
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256 if self.location is not None: |
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257 message = _(b"config error at %s: %s\n") % ( |
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258 pycompat.bytestr(self.location), |
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259 self.message, |
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260 ) |
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261 else: |
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262 message = _(b"config error: %s\n") % self.message |
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263 if self.hint: |
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264 message += _(b"(%s)\n") % self.hint |
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265 return message |
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266 |
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267 |
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268 class UpdateAbort(Abort): |
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269 """Raised when an update is aborted for destination issue""" |
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270 |
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271 |
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272 class MergeDestAbort(Abort): |
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273 """Raised when an update is aborted for destination issues""" |
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274 |
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275 |
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276 class NoMergeDestAbort(MergeDestAbort): |
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277 """Raised when an update is aborted because there is nothing to merge""" |
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278 |
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279 |
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280 class ManyMergeDestAbort(MergeDestAbort): |
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281 """Raised when an update is aborted because destination is ambiguous""" |
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282 |
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283 |
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284 class ResponseExpected(Abort): |
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285 """Raised when an EOF is received for a prompt""" |
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286 |
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287 def __init__(self): |
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288 from .i18n import _ |
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289 |
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290 Abort.__init__(self, _(b'response expected')) |
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291 |
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292 |
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293 class OutOfBandError(Hint, Exception): |
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294 """Exception raised when a remote repo reports failure""" |
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295 |
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296 __bytes__ = _tobytes |
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297 |
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298 |
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299 class ParseError(Abort): |
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300 """Raised when parsing config files and {rev,file}sets (msg[, pos])""" |
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301 |
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302 def __init__(self, message, location=None, hint=None): |
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303 super(ParseError, self).__init__(message, hint=hint) |
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304 self.location = location |
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305 |
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306 def format(self): |
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307 from .i18n import _ |
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308 |
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309 if self.location is not None: |
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310 message = _(b"hg: parse error at %s: %s\n") % ( |
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311 pycompat.bytestr(self.location), |
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312 self.message, |
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313 ) |
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314 else: |
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315 message = _(b"hg: parse error: %s\n") % self.message |
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316 if self.hint: |
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317 message += _(b"(%s)\n") % self.hint |
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318 return message |
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319 |
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320 |
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321 class PatchError(Exception): |
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322 __bytes__ = _tobytes |
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323 |
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324 |
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325 def getsimilar(symbols, value): |
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326 sim = lambda x: difflib.SequenceMatcher(None, value, x).ratio() |
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327 # The cutoff for similarity here is pretty arbitrary. It should |
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328 # probably be investigated and tweaked. |
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329 return [s for s in symbols if sim(s) > 0.6] |
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330 |
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331 |
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332 def similarity_hint(similar): |
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333 from .i18n import _ |
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334 |
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335 if len(similar) == 1: |
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336 return _(b"did you mean %s?") % similar[0] |
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337 elif similar: |
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338 ss = b", ".join(sorted(similar)) |
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339 return _(b"did you mean one of %s?") % ss |
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340 else: |
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341 return None |
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342 |
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343 |
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344 class UnknownIdentifier(ParseError): |
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345 """Exception raised when a {rev,file}set references an unknown identifier""" |
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346 |
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347 def __init__(self, function, symbols): |
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348 from .i18n import _ |
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349 |
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350 similar = getsimilar(symbols, function) |
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351 hint = similarity_hint(similar) |
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352 |
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353 ParseError.__init__( |
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354 self, _(b"unknown identifier: %s") % function, hint=hint |
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355 ) |
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356 |
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357 |
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358 class RepoError(Hint, Exception): |
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359 __bytes__ = _tobytes |
7637 | 360 |
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361 |
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362 class RepoLookupError(RepoError): |
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363 pass |
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364 |
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365 |
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366 class FilteredRepoLookupError(RepoLookupError): |
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367 pass |
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368 |
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369 |
7637 | 370 class CapabilityError(RepoError): |
371 pass | |
7640 | 372 |
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373 |
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374 class RequirementError(RepoError): |
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375 """Exception raised if .hg/requires has an unknown entry.""" |
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376 |
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377 |
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378 class StdioError(IOError): |
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379 """Raised if I/O to stdout or stderr fails""" |
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380 |
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381 def __init__(self, err): |
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382 IOError.__init__(self, err.errno, err.strerror) |
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383 |
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384 # no __bytes__() because error message is derived from the standard IOError |
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385 |
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386 |
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387 class UnsupportedMergeRecords(Abort): |
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388 def __init__(self, recordtypes): |
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389 from .i18n import _ |
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390 |
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391 self.recordtypes = sorted(recordtypes) |
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392 s = b' '.join(self.recordtypes) |
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393 Abort.__init__( |
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394 self, |
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395 _(b'unsupported merge state records: %s') % s, |
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396 hint=_( |
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397 b'see https://mercurial-scm.org/wiki/MergeStateRecords for ' |
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398 b'more information' |
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399 ), |
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400 ) |
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401 |
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402 |
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403 class UnknownVersion(Abort): |
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404 """generic exception for aborting from an encounter with an unknown version""" |
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405 |
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406 def __init__(self, msg, hint=None, version=None): |
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407 self.version = version |
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408 super(UnknownVersion, self).__init__(msg, hint=hint) |
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409 |
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410 |
7640 | 411 class LockError(IOError): |
412 def __init__(self, errno, strerror, filename, desc): | |
413 IOError.__init__(self, errno, strerror, filename) | |
414 self.desc = desc | |
415 | |
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416 # no __bytes__() because error message is derived from the standard IOError |
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417 |
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418 |
7640 | 419 class LockHeld(LockError): |
420 def __init__(self, errno, filename, desc, locker): | |
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421 LockError.__init__(self, errno, b'Lock held', filename, desc) |
7640 | 422 self.locker = locker |
423 | |
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424 |
7640 | 425 class LockUnavailable(LockError): |
426 pass | |
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427 |
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428 |
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429 # LockError is for errors while acquiring the lock -- this is unrelated |
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430 class LockInheritanceContractViolation(RuntimeError): |
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431 __bytes__ = _tobytes |
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432 |
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433 |
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434 class ResponseError(Exception): |
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435 """Raised to print an error with part of output and exit.""" |
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436 |
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437 __bytes__ = _tobytes |
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438 |
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439 |
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440 # derived from KeyboardInterrupt to simplify some breakout code |
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441 class SignalInterrupt(KeyboardInterrupt): |
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442 """Exception raised on SIGTERM and SIGHUP.""" |
7646 | 443 |
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444 |
7646 | 445 class SignatureError(Exception): |
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446 __bytes__ = _tobytes |
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447 |
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448 |
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449 class PushRaced(RuntimeError): |
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450 """An exception raised during unbundling that indicate a push race""" |
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451 |
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452 __bytes__ = _tobytes |
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453 |
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454 |
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455 class ProgrammingError(Hint, RuntimeError): |
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456 """Raised if a mercurial (core or extension) developer made a mistake""" |
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457 |
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458 def __init__(self, msg, *args, **kwargs): |
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459 # On Python 3, turn the message back into a string since this is |
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460 # an internal-only error that won't be printed except in a |
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461 # stack traces. |
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462 msg = pycompat.sysstr(msg) |
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463 super(ProgrammingError, self).__init__(msg, *args, **kwargs) |
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464 |
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465 __bytes__ = _tobytes |
30573 | 466 |
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467 |
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468 class WdirUnsupported(Exception): |
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469 """An exception which is raised when 'wdir()' is not supported""" |
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470 |
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471 __bytes__ = _tobytes |
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472 |
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473 |
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474 # bundle2 related errors |
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475 class BundleValueError(ValueError): |
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476 """error raised when bundle2 cannot be processed""" |
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477 |
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478 __bytes__ = _tobytes |
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479 |
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480 |
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481 class BundleUnknownFeatureError(BundleValueError): |
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482 def __init__(self, parttype=None, params=(), values=()): |
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483 self.parttype = parttype |
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484 self.params = params |
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485 self.values = values |
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486 if self.parttype is None: |
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487 msg = b'Stream Parameter' |
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488 else: |
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489 msg = parttype |
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490 entries = self.params |
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491 if self.params and self.values: |
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492 assert len(self.params) == len(self.values) |
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493 entries = [] |
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494 for idx, par in enumerate(self.params): |
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495 val = self.values[idx] |
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496 if val is None: |
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497 entries.append(val) |
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498 else: |
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499 entries.append(b"%s=%r" % (par, pycompat.maybebytestr(val))) |
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500 if entries: |
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501 msg = b'%s - %s' % (msg, b', '.join(entries)) |
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502 ValueError.__init__(self, msg) |
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503 |
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504 |
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505 class ReadOnlyPartError(RuntimeError): |
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506 """error raised when code tries to alter a part being generated""" |
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507 |
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508 __bytes__ = _tobytes |
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509 |
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510 |
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511 class PushkeyFailed(Abort): |
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512 """error raised when a pushkey part failed to update a value""" |
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513 |
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514 def __init__( |
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515 self, partid, namespace=None, key=None, new=None, old=None, ret=None |
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516 ): |
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517 self.partid = partid |
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518 self.namespace = namespace |
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519 self.key = key |
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520 self.new = new |
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521 self.old = old |
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522 self.ret = ret |
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523 # no i18n expected to be processed into a better message |
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524 Abort.__init__( |
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525 self, b'failed to update value for "%s/%s"' % (namespace, key) |
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526 ) |
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527 |
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528 |
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529 class CensoredNodeError(StorageError): |
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530 """error raised when content verification fails on a censored node |
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531 |
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532 Also contains the tombstone data substituted for the uncensored data. |
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533 """ |
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534 |
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535 def __init__(self, filename, node, tombstone): |
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536 from .node import short |
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537 |
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538 StorageError.__init__(self, b'%s:%s' % (filename, short(node))) |
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539 self.tombstone = tombstone |
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540 |
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541 |
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542 class CensoredBaseError(StorageError): |
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543 """error raised when a delta is rejected because its base is censored |
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544 |
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545 A delta based on a censored revision must be formed as single patch |
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546 operation which replaces the entire base with new content. This ensures |
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547 the delta may be applied by clones which have not censored the base. |
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548 """ |
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549 |
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550 |
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551 class InvalidBundleSpecification(Exception): |
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552 """error raised when a bundle specification is invalid. |
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553 |
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554 This is used for syntax errors as opposed to support errors. |
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555 """ |
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556 |
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557 __bytes__ = _tobytes |
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558 |
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559 |
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560 class UnsupportedBundleSpecification(Exception): |
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561 """error raised when a bundle specification is not supported.""" |
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562 |
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563 __bytes__ = _tobytes |
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564 |
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565 |
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566 class CorruptedState(Exception): |
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567 """error raised when a command is not able to read its state from file""" |
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568 |
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569 __bytes__ = _tobytes |
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570 |
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571 |
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572 class PeerTransportError(Abort): |
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573 """Transport-level I/O error when communicating with a peer repo.""" |
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574 |
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575 |
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576 class InMemoryMergeConflictsError(Exception): |
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577 """Exception raised when merge conflicts arose during an in-memory merge.""" |
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578 |
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579 __bytes__ = _tobytes |
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580 |
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581 |
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582 class WireprotoCommandError(Exception): |
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583 """Represents an error during execution of a wire protocol command. |
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584 |
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585 Should only be thrown by wire protocol version 2 commands. |
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586 |
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587 The error is a formatter string and an optional iterable of arguments. |
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588 """ |
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589 |
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590 def __init__(self, message, args=None): |
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591 self.message = message |
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592 self.messageargs = args |