[KoCo-CVS] [Commit] KoreanCodecs/korean error_callback.py

[Hye-Shik C. <pe...@us...>]

perky       03/01/12 23:25:26

  Added:       korean   error_callback.py
  Log:
  Add PEP293 emulation codes.
  
  Revision  Changes    Path
  1.1                  KoreanCodecs/korean/error_callback.py
  
  Index: error_callback.py
  ===================================================================
  #
  # This file is part of KoreanCodecs.
  #
  # Copyright(C) 2002-2003 Hye-Shik Chang <pe...@Fr...>.
  #
  # KoreanCodecs is free software; you can redistribute it and/or modify
  # it under the terms of the GNU Lesser General Public License as published
  # by the Free Software Foundation; either version 2 of the License, or
  # (at your option) any later version.
  #
  # KoreanCodecs is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU Lesser General Public License for more details.
  #
  # You should have received a copy of the GNU Lesser General Public License
  # along with KoreanCodecs; if not, write to the Free Software
  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  #
  # $Id: error_callback.py,v 1.1 2003/01/13 07:25:26 perky Exp $
  #
  
  try:
      from __builtin__ import UnicodeEncodeError, UnicodeDecodeError
      from codecs import lookup_error
  except: # implementations from PEP293 for ancient systems
      class UnicodeEncodeError(UnicodeError):
          def __init__(self, encoding, object, start, end, reason):
              UnicodeError.__init__(self,
                  "encoding '%s' can't encode characters " +
                  "in positions %d-%d: %s" % (encoding,
                      start, end-1, reason))
              self.encoding = encoding
              self.object = object
              self.start = start
              self.end = end
              self.reason = reason
  
      class UnicodeDecodeError(UnicodeError):
          def __init__(self, encoding, object, start, end, reason):
              UnicodeError.__init__(self,
                  "encoding '%s' can't decode characters " +
                  "in positions %d-%d: %s" % (encoding,
                      start, end-1, reason))
              self.encoding = encoding
              self.object = object
              self.start = start
              self.end = end
              self.reason = reason
  
      def errcb_strict(exc):
          raise exc
      def errcb_ignore(exc):
          if isinstance(exc, UnicodeError):
              return (u"", exc.end)
          else:
              raise TypeError("can't handle %s" % exc.__name__)
      def errcb_replace(exc):
          if isinstance(exc, UnicodeEncodeError):
              return ((exc.end-exc.start)*u"?", exc.end)
          elif isinstance(exc, UnicodeDecodeError):
              return (u"\ufffd", exc.end)
          else:
              raise TypeError("can't handle %s" % exc.__name__)
      error_callbacks = {
          'strict': errcb_strict,
          'ignore': errcb_ignore,
          'replace': errcb_replace,
      }
  
      def lookup_error(name):
          cb = error_callbacks.get(name)
          if cb:
              return cb
          else:
              raise LookupError, "unknown error handler name '%s'" % name
  
  # ex: ts=8 sts=4 et