# repo.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

from i18n import _

import error

class repository(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.'''

        if name in self.capabilities:

            return True

        name_eq = name + '='

        for cap in self.capabilities:

            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 False

    def cancopy(self):

        return self.local()

    def rjoin(self, path):

        url = self.url()

        if url.endswith('/'):

            return url + path

        else:

            return url + '/' + path