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1 # error.py - Mercurial exceptions
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2 #
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3 # Copyright 2005-2008 Matt Mackall <mpm@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
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6 # GNU General Public License version 2, incorporated herein by reference.
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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 # Do not import anything here, please
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15
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16 class RevlogError(Exception):
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17 pass
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18
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19 class LookupError(RevlogError, KeyError):
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20 def __init__(self, name, index, message):
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21 self.name = name
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22 if isinstance(name, str) and len(name) == 20:
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23 from node import short
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24 name = short(name)
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25 RevlogError.__init__(self, '%s@%s: %s' % (index, name, message))
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26
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27 def __str__(self):
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28 return RevlogError.__str__(self)
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29
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30 class ParseError(Exception):
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31 """Exception raised on errors in parsing the command line."""
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32
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33 class ConfigError(Exception):
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34 'Exception raised when parsing config files'
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35
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36 class RepoError(Exception):
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37 pass
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38
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39 class CapabilityError(RepoError):
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40 pass
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41
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42 class LockError(IOError):
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43 def __init__(self, errno, strerror, filename, desc):
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44 IOError.__init__(self, errno, strerror, filename)
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45 self.desc = desc
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46
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47 class LockHeld(LockError):
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48 def __init__(self, errno, filename, desc, locker):
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49 LockError.__init__(self, errno, 'Lock held', filename, desc)
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50 self.locker = locker
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51
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52 class LockUnavailable(LockError):
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53 pass
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54
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55 class ResponseError(Exception):
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56 """Raised to print an error with part of output and exit."""
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57
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58 class UnknownCommand(Exception):
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59 """Exception raised if command is not in the command table."""
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60
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61 class AmbiguousCommand(Exception):
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62 """Exception raised if command shortcut matches more than one command."""
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63
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64 # derived from KeyboardInterrupt to simplify some breakout code
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65 class SignalInterrupt(KeyboardInterrupt):
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66 """Exception raised on SIGTERM and SIGHUP."""
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67
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68 class SignatureError(Exception):
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69 pass
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70
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71 class Abort(Exception):
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72 """Raised if a command needs to print an error and exit."""
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