upstream/mercurial-mirror Files · mercurial/peer.py

filecontext: use 'is not None' to check for filelog existence...

filecontext: use 'is not None' to check for filelog existence Previously we used 'if filelog:' to check if the filelog existed. If the instance did exist, this pattern then calls len() on the filelog to see if it is empty. I'm developing a filelog replacement that doesn't have len() implemented, so it's better to do an explicit 'is not None' check here instead. Also change _changeid() to return the _changeid attribute if it has it. Previously it would try to obtain it from the _changectx(), and if that did not exist it would construct the _changectx() using the linkrev. In the extension I'm working on, filectx's don't have easy access to linkrevs so avoiding this when possible is better.

Simon Heimberg - - Load All Authors

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      # peer.py - repository base classes for mercurial

      #

      # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>

      # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      from i18n import _

      import error

      class peerrepository(object):

          def capable(self, name):

              '''tell whether repo supports named capability.

              return False if not supported.

              if boolean capability, return True.

              if string capability, return string.'''

              caps = self._capabilities()

              if name in caps:

                  return True

              name_eq = name + '='

              for cap in caps:

                  if cap.startswith(name_eq):

                      return cap[len(name_eq):]

              return False

          def requirecap(self, name, purpose):

              '''raise an exception if the given capability is not present'''

              if not self.capable(name):

                  raise error.CapabilityError(

                      _('cannot %s; remote repository does not '

                        'support the %r capability') % (purpose, name))

          def local(self):

              '''return peer as a localrepo, or None'''

              return None

          def peer(self):

              return self

          def canpush(self):

              return True

          def close(self):

              pass

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				# peer.py - repository base classes for mercurial
				#
				# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
				# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from i18n import _
				import error

				class peerrepository(object):

				def capable(self, name):
				'''tell whether repo supports named capability.
				return False if not supported.
				if boolean capability, return True.
				if string capability, return string.'''
				caps = self._capabilities()
				if name in caps:
				return True
				name_eq = name + '='
				for cap in caps:
				if cap.startswith(name_eq):
				return cap[len(name_eq):]
				return False

				def requirecap(self, name, purpose):
				'''raise an exception if the given capability is not present'''
				if not self.capable(name):
				raise error.CapabilityError(
				_('cannot %s; remote repository does not '
				'support the %r capability') % (purpose, name))

				def local(self):
				'''return peer as a localrepo, or None'''
				return None

				def peer(self):
				return self

				def canpush(self):
				return True

				def close(self):
				pass