progress: add a changedelay to prevent parallel topics from flapping (
issue2698)
When combined with the earlier change to make the progress object
truly a singleton, this prevents the progress bar swapping on 'hg
clone --pull' on a local filesystem.
Thanks to timeless for lots of debugging help at the Copenhagen sprint
to isolate the root cause of this and a first draft an idea that would
fix it.
# 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
# GNU General Public License version 2 or any later version.
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 close(self):
pass