1 # repo.py - repository base classes for mercurial

     2 #

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

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

     5 #

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

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

     8 

     9 from i18n import _

    10 import error

    11 

    12 class repository(object):

    13     def capable(self, name):

    14         '''tell whether repo supports named capability.

    15         return False if not supported.

    16         if boolean capability, return True.

    17         if string capability, return string.'''

    18         if name in self.capabilities:

    19             return True

    20         name_eq = name + '='

    21         for cap in self.capabilities:

    22             if cap.startswith(name_eq):

    23                 return cap[len(name_eq):]

    24         return False

    25 

    26     def requirecap(self, name, purpose):

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

    28         if not self.capable(name):

    29             raise error.CapabilityError(

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

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

    32 

    33     def local(self):

    34         return False

    35 

    36     def cancopy(self):

    37         return self.local()

    38 

    39     def close(self):

    40         pass