convert: readd --filemap
To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.
The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.
The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.
To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.
# extensions.py - extension handling for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import imp, os
import util, sys
from i18n import _
_extensions = {}
_order = []
def extensions():
for name in _order:
module = _extensions[name]
if module:
yield name, module
def find(name):
'''return module with given extension name'''
try:
return _extensions[name]
except KeyError:
for k, v in _extensions.iteritems():
if k.endswith('.' + name) or k.endswith('/' + name):
return v
raise KeyError(name)
def load(ui, name, path):
if name.startswith('hgext.'):
shortname = name[6:]
else:
shortname = name
if shortname in _extensions:
return
_extensions[shortname] = None
if path:
# the module will be loaded in sys.modules
# choose an unique name so that it doesn't
# conflicts with other modules
module_name = "hgext_%s" % name.replace('.', '_')
if os.path.isdir(path):
# module/__init__.py style
d, f = os.path.split(path)
fd, fpath, desc = imp.find_module(f, [d])
mod = imp.load_module(module_name, fd, fpath, desc)
else:
mod = imp.load_source(module_name, path)
else:
def importh(name):
mod = __import__(name)
components = name.split('.')
for comp in components[1:]:
mod = getattr(mod, comp)
return mod
try:
mod = importh("hgext.%s" % name)
except ImportError:
mod = importh(name)
_extensions[shortname] = mod
_order.append(shortname)
uisetup = getattr(mod, 'uisetup', None)
if uisetup:
uisetup(ui)
def loadall(ui):
result = ui.configitems("extensions")
for i, (name, path) in enumerate(result):
if path:
path = os.path.expanduser(path)
try:
load(ui, name, path)
except (util.SignalInterrupt, KeyboardInterrupt):
raise
except Exception, inst:
ui.warn(_("*** failed to import extension %s: %s\n") %
(name, inst))
if ui.print_exc():
return 1