git_remote_helpers/fastimport/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
  20 class FastImportError(StandardError):
  21     """The base exception class for all import processing exceptions."""
  22
  23     _fmt = "Unknown Import Error"
  24
  25     def __str__(self):
  26         return self._fmt % self.__dict__
  27
  28 class ParsingError(FastImportError):
  29     """The base exception class for all import processing exceptions."""
  30
  31     _fmt = "Unknown Import Parsing Error"
  32
  33     def __init__(self, filename, lineno):
  34         FastImportError.__init__(self)
  35         self.filename = filename
  36         self.lineno = lineno
  37
  38     def __str__(self):
  39         result = []
  40         if self.filename:
  41             result.append(self.filename)
  42             result.append(", ")
  43         result.append("line ")
  44         result.append(str(self.lineno))
  45         result.append(": ")
  46         result.append(FastImportError.__str__(self))
  47         return "".join(result)
  48
  49
  50 class MissingBytes(ParsingError):
  51     """Raised when EOF encountered while expecting to find more bytes."""
  52
  53     _fmt = ("Unexpected EOF - expected %(expected)d bytes,"
  54         " found %(found)d")
  55
  56     def __init__(self, filename, lineno, expected, found):
  57         ParsingError.__init__(self, filename, lineno)
  58         self.expected = expected
  59         self.found = found
  60
  61
  62 class MissingTerminator(ParsingError):
  63     """Raised when EOF encountered while expecting to find a terminator."""
  64
  65     _fmt = "Unexpected EOF - expected '%(terminator)s' terminator"
  66
  67     def __init__(self, filename, lineno, terminator):
  68         ParsingError.__init__(self, filename, lineno)
  69         self.terminator = terminator
  70
  71
  72 class InvalidCommand(ParsingError):
  73     """Raised when an unknown command found."""
  74
  75     _fmt = ("Invalid command '%(cmd)s'")
  76
  77     def __init__(self, filename, lineno, cmd):
  78         ParsingError.__init__(self, filename, lineno)
  79         self.cmd = cmd
  80
  81
  82 class MissingSection(ParsingError):
  83     """Raised when a section is required in a command but not present."""
  84
  85     _fmt = ("Command %(cmd)s is missing section %(section)s")
  86
  87     def __init__(self, filename, lineno, cmd, section):
  88         ParsingError.__init__(self, filename, lineno)
  89         self.cmd = cmd
  90         self.section = section
  91
  92
  93 class BadFormat(ParsingError):
  94     """Raised when a section is formatted incorrectly."""
  95
  96     _fmt = ("Bad format for section %(section)s in "
  97             "command %(cmd)s: found '%(text)s'")
  98
  99     def __init__(self, filename, lineno, cmd, section, text):
 100         ParsingError.__init__(self, filename, lineno)
 101         self.cmd = cmd
 102         self.section = section
 103         self.text = text
 104
 105
 106 class InvalidTimezone(ParsingError):
 107     """Raised when converting a string timezone to a seconds offset."""
 108
 109     _fmt = "Timezone %(timezone)r could not be converted.%(reason)s"
 110
 111     def __init__(self, filename, lineno, timezone, reason=None):
 112         ParsingError.__init__(self, filename, lineno)
 113         self.timezone = timezone
 114         if reason:
 115             self.reason = ' ' + reason
 116         else:
 117             self.reason = ''
 118
 119
 120 class UnknownDateFormat(FastImportError):
 121     """Raised when an unknown date format is given."""
 122
 123     _fmt = ("Unknown date format '%(format)s'")
 124
 125     def __init__(self, format):
 126         FastImportError.__init__(self)
 127         self.format = format
 128
 129
 130 class MissingHandler(FastImportError):
 131     """Raised when a processor can't handle a command."""
 132
 133     _fmt = ("Missing handler for command %(cmd)s")
 134
 135     def __init__(self, cmd):
 136         FastImportError.__init__(self)
 137         self.cmd = cmd
 138
 139
 140 class UnknownParameter(FastImportError):
 141     """Raised when an unknown parameter is passed to a processor."""
 142
 143     _fmt = ("Unknown parameter - '%(param)s' not in %(knowns)s")
 144
 145     def __init__(self, param, knowns):
 146         FastImportError.__init__(self)
 147         self.param = param
 148         self.knowns = knowns
 149
 150
 151 class BadRepositorySize(FastImportError):
 152     """Raised when the repository has an incorrect number of revisions."""
 153
 154     _fmt = ("Bad repository size - %(found)d revisions found, "
 155         "%(expected)d expected")
 156
 157     def __init__(self, expected, found):
 158         FastImportError.__init__(self)
 159         self.expected = expected
 160         self.found = found
 161
 162
 163 class BadRestart(FastImportError):
 164     """Raised when the import stream and id-map do not match up."""
 165
 166     _fmt = ("Bad restart - attempted to skip commit %(commit_id)s "
 167         "but matching revision-id is unknown")
 168
 169     def __init__(self, commit_id):
 170         FastImportError.__init__(self)
 171         self.commit_id = commit_id
 172
 173
 174 class UnknownFeature(FastImportError):
 175     """Raised when an unknown feature is given in the input stream."""
 176
 177     _fmt = ("Unknown feature '%(feature)s' - try a later importer or "
 178         "an earlier data format")
 179
 180     def __init__(self, feature):
 181         FastImportError.__init__(self)
 182         self.feature = feature