errors.py

   1 # Copyright (C) 2008 Canonical Ltd
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16
  17 """Exception classes for fastimport"""
  18
  19 from bzrlib import errors as bzr_errors
  20
  21
  22 # Prefix to messages to show location information
  23 _LOCATION_FMT = "line %(lineno)d: "
  24
  25
  26 class ImportError(bzr_errors.BzrError):
  27     """The base exception class for all import processing exceptions."""
  28
  29     _fmt = "Unknown Import Error"
  30
  31
  32 class ParsingError(ImportError):
  33     """The base exception class for all import processing exceptions."""
  34
  35     _fmt = _LOCATION_FMT + "Unknown Import Parsing Error"
  36
  37     def __init__(self, lineno):
  38         ImportError.__init__(self)
  39         self.lineno = lineno
  40
  41
  42 class MissingBytes(ParsingError):
  43     """Raised when EOF encountered while expecting to find more bytes."""
  44
  45     _fmt = (_LOCATION_FMT + "Unexpected EOF - expected %(expected)d bytes,"
  46         " found %(found)d")
  47
  48     def __init__(self, lineno, expected, found):
  49         ParsingError.__init__(self, lineno)
  50         self.expected = expected
  51         self.found = found
  52
  53
  54 class MissingTerminator(ParsingError):
  55     """Raised when EOF encountered while expecting to find a terminator."""
  56
  57     _fmt = (_LOCATION_FMT +
  58         "Unexpected EOF - expected '%(terminator)s' terminator")
  59
  60     def __init__(self, lineno, terminator):
  61         ParsingError.__init__(self, lineno)
  62         self.terminator = terminator
  63
  64
  65 class InvalidCommand(ParsingError):
  66     """Raised when an unknown command found."""
  67
  68     _fmt = (_LOCATION_FMT + "Invalid command '%(cmd)s'")
  69
  70     def __init__(self, lineno, cmd):
  71         ParsingError.__init__(self, lineno)
  72         self.cmd = cmd
  73
  74
  75 class MissingSection(ParsingError):
  76     """Raised when a section is required in a command but not present."""
  77
  78     _fmt = (_LOCATION_FMT + "Command %(cmd)s is missing section %(section)s")
  79
  80     def __init__(self, lineno, cmd, section):
  81         ParsingError.__init__(self, lineno)
  82         self.cmd = cmd
  83         self.section = section
  84
  85
  86 class BadFormat(ParsingError):
  87     """Raised when a section is formatted incorrectly."""
  88
  89     _fmt = (_LOCATION_FMT + "Bad format for section %(section)s in "
  90         "command %(cmd)s: found '%(text)s'")
  91
  92     def __init__(self, lineno, cmd, section, text):
  93         ParsingError.__init__(self, lineno)
  94         self.cmd = cmd
  95         self.section = section
  96         self.text = text
  97
  98
  99 class InvalidTimezone(ParsingError):
 100     """Raised when converting a string timezone to a seconds offset."""
 101
 102     _fmt = (_LOCATION_FMT +
 103         "Timezone %(timezone)r could not be converted.%(reason)s")
 104
 105     def __init__(self, lineno, timezone, reason=None):
 106         ParsingError.__init__(self, lineno)
 107         self.timezone = timezone
 108         if reason:
 109             self.reason = ' ' + reason
 110         else:
 111             self.reason = ''
 112
 113
 114 class UnknownDateFormat(ImportError):
 115     """Raised when an unknown date format is given."""
 116
 117     _fmt = ("Unknown date format '%(format)s'")
 118
 119     def __init__(self, format):
 120         ImportError.__init__(self)
 121         self.format = format
 122
 123
 124 class MissingHandler(ImportError):
 125     """Raised when a processor can't handle a command."""
 126
 127     _fmt = ("Missing handler for command %(cmd)s")
 128
 129     def __init__(self, cmd):
 130         ImportError.__init__(self)
 131         self.cmd = cmd
 132
 133
 134 class UnknownParameter(ImportError):
 135     """Raised when an unknown parameter is passed to a processor."""
 136
 137     _fmt = ("Unknown parameter - '%(param)s' not in %(knowns)s")
 138
 139     def __init__(self, param, knowns):
 140         ImportError.__init__(self)
 141         self.param = param
 142         self.knowns = knowns
 143
 144
 145 class BadRepositorySize(ImportError):
 146     """Raised when the repository has an incorrect number of revisions."""
 147
 148     _fmt = ("Bad repository size - %(found)d revisions found, "
 149         "%(expected)d expected")
 150
 151     def __init__(self, expected, found):
 152         ImportError.__init__(self)
 153         self.expected = expected
 154         self.found = found
 155
 156
 157 class BadRestart(ImportError):
 158     """Raised when the import stream and id-map do not match up."""
 159
 160     _fmt = ("Bad restart - attempted to skip commit %(commit_id)s "
 161         "but matching revision-id is unknown")
 162
 163     def __init__(self, commit_id):
 164         ImportError.__init__(self)
 165         self.commit_id = commit_id
 166
 167
 168 class UnknownFeature(ImportError):
 169     """Raised when an unknown feature is given in the input stream."""
 170
 171     _fmt = ("Unknown feature '%(feature)s' - try a later importer or "
 172         "an earlier data format")
 173
 174     def __init__(self, feature):
 175         ImportError.__init__(self)
 176         self.feature = feature