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# narrowcommands.py - command modifications for narrowhg extension
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#
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# Copyright 2017 Google, Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import itertools
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import os
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from mercurial.i18n import _
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from mercurial import (
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bundle2,
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cmdutil,
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commands,
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discovery,
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encoding,
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error,
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exchange,
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extensions,
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hg,
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merge,
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narrowspec,
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node,
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pycompat,
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registrar,
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repair,
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repository,
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repoview,
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sparse,
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util,
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wireprototypes,
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)
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table = {}
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command = registrar.command(table)
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def setup():
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"""Wraps user-facing mercurial commands with narrow-aware versions."""
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entry = extensions.wrapcommand(commands.table, 'clone', clonenarrowcmd)
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entry[1].append(('', 'narrow', None,
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_("create a narrow clone of select files")))
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entry[1].append(('', 'depth', '',
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_("limit the history fetched by distance from heads")))
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entry[1].append(('', 'narrowspec', '',
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_("read narrowspecs from file")))
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# TODO(durin42): unify sparse/narrow --include/--exclude logic a bit
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if 'sparse' not in extensions.enabled():
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entry[1].append(('', 'include', [],
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_("specifically fetch this file/directory")))
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entry[1].append(
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('', 'exclude', [],
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_("do not fetch this file/directory, even if included")))
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entry = extensions.wrapcommand(commands.table, 'pull', pullnarrowcmd)
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entry[1].append(('', 'depth', '',
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_("limit the history fetched by distance from heads")))
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extensions.wrapcommand(commands.table, 'archive', archivenarrowcmd)
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def clonenarrowcmd(orig, ui, repo, *args, **opts):
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"""Wraps clone command, so 'hg clone' first wraps localrepo.clone()."""
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opts = pycompat.byteskwargs(opts)
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wrappedextraprepare = util.nullcontextmanager()
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narrowspecfile = opts['narrowspec']
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if narrowspecfile:
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filepath = os.path.join(encoding.getcwd(), narrowspecfile)
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ui.status(_("reading narrowspec from '%s'\n") % filepath)
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try:
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fdata = util.readfile(filepath)
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except IOError as inst:
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raise error.Abort(_("cannot read narrowspecs from '%s': %s") %
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(filepath, encoding.strtolocal(inst.strerror)))
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includes, excludes, profiles = sparse.parseconfig(ui, fdata, 'narrow')
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if profiles:
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raise error.Abort(_("cannot specify other files using '%include' in"
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" narrowspec"))
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narrowspec.validatepatterns(includes)
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narrowspec.validatepatterns(excludes)
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# narrowspec is passed so we should assume that user wants narrow clone
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opts['narrow'] = True
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opts['include'].extend(includes)
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opts['exclude'].extend(excludes)
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if opts['narrow']:
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def pullbundle2extraprepare_widen(orig, pullop, kwargs):
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orig(pullop, kwargs)
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if opts.get('depth'):
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kwargs['depth'] = opts['depth']
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wrappedextraprepare = extensions.wrappedfunction(exchange,
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'_pullbundle2extraprepare', pullbundle2extraprepare_widen)
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with wrappedextraprepare:
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return orig(ui, repo, *args, **pycompat.strkwargs(opts))
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def pullnarrowcmd(orig, ui, repo, *args, **opts):
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"""Wraps pull command to allow modifying narrow spec."""
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wrappedextraprepare = util.nullcontextmanager()
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if repository.NARROW_REQUIREMENT in repo.requirements:
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def pullbundle2extraprepare_widen(orig, pullop, kwargs):
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orig(pullop, kwargs)
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if opts.get(r'depth'):
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kwargs['depth'] = opts[r'depth']
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wrappedextraprepare = extensions.wrappedfunction(exchange,
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'_pullbundle2extraprepare', pullbundle2extraprepare_widen)
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with wrappedextraprepare:
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return orig(ui, repo, *args, **opts)
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def archivenarrowcmd(orig, ui, repo, *args, **opts):
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"""Wraps archive command to narrow the default includes."""
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if repository.NARROW_REQUIREMENT in repo.requirements:
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repo_includes, repo_excludes = repo.narrowpats
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includes = set(opts.get(r'include', []))
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excludes = set(opts.get(r'exclude', []))
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includes, excludes, unused_invalid = narrowspec.restrictpatterns(
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includes, excludes, repo_includes, repo_excludes)
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if includes:
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opts[r'include'] = includes
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if excludes:
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opts[r'exclude'] = excludes
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return orig(ui, repo, *args, **opts)
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def pullbundle2extraprepare(orig, pullop, kwargs):
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repo = pullop.repo
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if repository.NARROW_REQUIREMENT not in repo.requirements:
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return orig(pullop, kwargs)
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if wireprototypes.NARROWCAP not in pullop.remote.capabilities():
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raise error.Abort(_("server does not support narrow clones"))
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orig(pullop, kwargs)
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kwargs['narrow'] = True
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include, exclude = repo.narrowpats
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kwargs['oldincludepats'] = include
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kwargs['oldexcludepats'] = exclude
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if include:
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kwargs['includepats'] = include
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if exclude:
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kwargs['excludepats'] = exclude
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# calculate known nodes only in ellipses cases because in non-ellipses cases
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# we have all the nodes
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if wireprototypes.ELLIPSESCAP in pullop.remote.capabilities():
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kwargs['known'] = [node.hex(ctx.node()) for ctx in
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repo.set('::%ln', pullop.common)
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if ctx.node() != node.nullid]
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if not kwargs['known']:
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# Mercurial serializes an empty list as '' and deserializes it as
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# [''], so delete it instead to avoid handling the empty string on
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# the server.
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del kwargs['known']
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extensions.wrapfunction(exchange,'_pullbundle2extraprepare',
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pullbundle2extraprepare)
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# This is an extension point for filesystems that need to do something other
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# than just blindly unlink the files. It's not clear what arguments would be
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# useful, so we're passing in a fair number of them, some of them redundant.
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def _narrowcleanupwdir(repo, oldincludes, oldexcludes, newincludes, newexcludes,
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oldmatch, newmatch):
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for f in repo.dirstate:
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if not newmatch(f):
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repo.dirstate.drop(f)
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repo.wvfs.unlinkpath(f)
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def _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes,
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newincludes, newexcludes, force):
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oldmatch = narrowspec.match(repo.root, oldincludes, oldexcludes)
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newmatch = narrowspec.match(repo.root, newincludes, newexcludes)
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# This is essentially doing "hg outgoing" to find all local-only
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# commits. We will then check that the local-only commits don't
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# have any changes to files that will be untracked.
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unfi = repo.unfiltered()
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outgoing = discovery.findcommonoutgoing(unfi, remote,
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commoninc=commoninc)
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ui.status(_('looking for local changes to affected paths\n'))
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localnodes = []
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for n in itertools.chain(outgoing.missing, outgoing.excluded):
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if any(oldmatch(f) and not newmatch(f) for f in unfi[n].files()):
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localnodes.append(n)
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revstostrip = unfi.revs('descendants(%ln)', localnodes)
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hiddenrevs = repoview.filterrevs(repo, 'visible')
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visibletostrip = list(repo.changelog.node(r)
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for r in (revstostrip - hiddenrevs))
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if visibletostrip:
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ui.status(_('The following changeset(s) or their ancestors have '
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'local changes not on the remote:\n'))
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maxnodes = 10
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if ui.verbose or len(visibletostrip) <= maxnodes:
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for n in visibletostrip:
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ui.status('%s\n' % node.short(n))
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else:
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for n in visibletostrip[:maxnodes]:
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ui.status('%s\n' % node.short(n))
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ui.status(_('...and %d more, use --verbose to list all\n') %
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(len(visibletostrip) - maxnodes))
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if not force:
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raise error.Abort(_('local changes found'),
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hint=_('use --force-delete-local-changes to '
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'ignore'))
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with ui.uninterruptible():
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if revstostrip:
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tostrip = [unfi.changelog.node(r) for r in revstostrip]
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if repo['.'].node() in tostrip:
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# stripping working copy, so move to a different commit first
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urev = max(repo.revs('(::%n) - %ln + null',
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repo['.'].node(), visibletostrip))
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hg.clean(repo, urev)
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overrides = {('devel', 'strip-obsmarkers'): False}
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with ui.configoverride(overrides, 'narrow'):
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repair.strip(ui, unfi, tostrip, topic='narrow')
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todelete = []
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for f, f2, size in repo.store.datafiles():
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if f.startswith('data/'):
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file = f[5:-2]
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if not newmatch(file):
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todelete.append(f)
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elif f.startswith('meta/'):
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dir = f[5:-13]
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dirs = ['.'] + sorted(util.dirs({dir})) + [dir]
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include = True
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for d in dirs:
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visit = newmatch.visitdir(d)
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if not visit:
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include = False
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break
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if visit == 'all':
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break
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if not include:
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todelete.append(f)
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repo.destroying()
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with repo.transaction("narrowing"):
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# Update narrowspec before removing revlogs, so repo won't be
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# corrupt in case of crash
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repo.setnarrowpats(newincludes, newexcludes)
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for f in todelete:
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ui.status(_('deleting %s\n') % f)
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util.unlinkpath(repo.svfs.join(f))
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repo.store.markremoved(f)
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_narrowcleanupwdir(repo, oldincludes, oldexcludes, newincludes,
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newexcludes, oldmatch, newmatch)
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repo.destroyed()
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def _widen(ui, repo, remote, commoninc, oldincludes, oldexcludes,
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newincludes, newexcludes):
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newmatch = narrowspec.match(repo.root, newincludes, newexcludes)
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# for now we assume that if a server has ellipses enabled, we will be
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# exchanging ellipses nodes. In future we should add ellipses as a client
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# side requirement (maybe) to distinguish a client is shallow or not and
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# then send that information to server whether we want ellipses or not.
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# Theoretically a non-ellipses repo should be able to use narrow
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# functionality from an ellipses enabled server
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ellipsesremote = wireprototypes.ELLIPSESCAP in remote.capabilities()
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def pullbundle2extraprepare_widen(orig, pullop, kwargs):
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orig(pullop, kwargs)
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# The old{in,ex}cludepats have already been set by orig()
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kwargs['includepats'] = newincludes
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kwargs['excludepats'] = newexcludes
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wrappedextraprepare = extensions.wrappedfunction(exchange,
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'_pullbundle2extraprepare', pullbundle2extraprepare_widen)
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# define a function that narrowbundle2 can call after creating the
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# backup bundle, but before applying the bundle from the server
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def setnewnarrowpats():
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repo.setnarrowpats(newincludes, newexcludes)
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repo.setnewnarrowpats = setnewnarrowpats
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# silence the devel-warning of applying an empty changegroup
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overrides = {('devel', 'all-warnings'): False}
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with ui.uninterruptible():
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common = commoninc[0]
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if ellipsesremote:
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ds = repo.dirstate
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p1, p2 = ds.p1(), ds.p2()
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with ds.parentchange():
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ds.setparents(node.nullid, node.nullid)
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with wrappedextraprepare,\
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repo.ui.configoverride(overrides, 'widen'):
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exchange.pull(repo, remote, heads=common)
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with ds.parentchange():
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ds.setparents(p1, p2)
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else:
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with remote.commandexecutor() as e:
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bundle = e.callcommand('narrow_widen', {
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'oldincludes': oldincludes,
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'oldexcludes': oldexcludes,
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'newincludes': newincludes,
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'newexcludes': newexcludes,
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'cgversion': '03',
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'commonheads': common,
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'known': [],
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'ellipses': False,
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}).result()
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with repo.transaction('widening') as tr,\
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repo.ui.configoverride(overrides, 'widen'):
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tgetter = lambda: tr
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bundle2.processbundle(repo, bundle,
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transactiongetter=tgetter)
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repo.setnewnarrowpats()
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actions = merge.emptyactions()
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addgaction = actions['g'].append
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mf = repo['.'].manifest().matches(newmatch)
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for f, fn in mf.iteritems():
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if f not in repo.dirstate:
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addgaction((f, (mf.flags(f), False),
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"add from widened narrow clone"))
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merge.applyupdates(repo, actions, wctx=repo[None],
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mctx=repo['.'], overwrite=False)
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merge.recordupdates(repo, actions, branchmerge=False)
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# TODO(rdamazio): Make new matcher format and update description
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@command('tracked',
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[('', 'addinclude', [], _('new paths to include')),
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('', 'removeinclude', [], _('old paths to no longer include')),
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('', 'addexclude', [], _('new paths to exclude')),
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('', 'import-rules', '', _('import narrowspecs from a file')),
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('', 'removeexclude', [], _('old paths to no longer exclude')),
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('', 'clear', False, _('whether to replace the existing narrowspec')),
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('', 'force-delete-local-changes', False,
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_('forces deletion of local changes when narrowing')),
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('', 'update-working-copy', False,
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_('update working copy when the store has changed')),
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] + commands.remoteopts,
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_('[OPTIONS]... [REMOTE]'),
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inferrepo=True)
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def trackedcmd(ui, repo, remotepath=None, *pats, **opts):
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"""show or change the current narrowspec
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With no argument, shows the current narrowspec entries, one per line. Each
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line will be prefixed with 'I' or 'X' for included or excluded patterns,
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respectively.
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The narrowspec is comprised of expressions to match remote files and/or
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directories that should be pulled into your client.
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The narrowspec has *include* and *exclude* expressions, with excludes always
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trumping includes: that is, if a file matches an exclude expression, it will
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be excluded even if it also matches an include expression.
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Excluding files that were never included has no effect.
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Each included or excluded entry is in the format described by
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'hg help patterns'.
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The options allow you to add or remove included and excluded expressions.
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If --clear is specified, then all previous includes and excludes are DROPPED
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and replaced by the new ones specified to --addinclude and --addexclude.
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If --clear is specified without any further options, the narrowspec will be
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empty and will not match any files.
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"""
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opts = pycompat.byteskwargs(opts)
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if repository.NARROW_REQUIREMENT not in repo.requirements:
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raise error.Abort(_('the narrow command is only supported on '
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'respositories cloned with --narrow'))
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# Before supporting, decide whether it "hg tracked --clear" should mean
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# tracking no paths or all paths.
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if opts['clear']:
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raise error.Abort(_('the --clear option is not yet supported'))
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# import rules from a file
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newrules = opts.get('import_rules')
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if newrules:
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try:
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filepath = os.path.join(encoding.getcwd(), newrules)
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fdata = util.readfile(filepath)
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except IOError as inst:
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raise error.Abort(_("cannot read narrowspecs from '%s': %s") %
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(filepath, encoding.strtolocal(inst.strerror)))
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includepats, excludepats, profiles = sparse.parseconfig(ui, fdata,
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'narrow')
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if profiles:
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raise error.Abort(_("including other spec files using '%include' "
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"is not supported in narrowspec"))
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opts['addinclude'].extend(includepats)
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opts['addexclude'].extend(excludepats)
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addedincludes = narrowspec.parsepatterns(opts['addinclude'])
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removedincludes = narrowspec.parsepatterns(opts['removeinclude'])
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addedexcludes = narrowspec.parsepatterns(opts['addexclude'])
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removedexcludes = narrowspec.parsepatterns(opts['removeexclude'])
|
|
|
|
|
|
update_working_copy = opts['update_working_copy']
|
|
|
only_show = not (addedincludes or removedincludes or addedexcludes or
|
|
|
removedexcludes or newrules or update_working_copy)
|
|
|
|
|
|
oldincludes, oldexcludes = repo.narrowpats
|
|
|
|
|
|
# filter the user passed additions and deletions into actual additions and
|
|
|
# deletions of excludes and includes
|
|
|
addedincludes -= oldincludes
|
|
|
removedincludes &= oldincludes
|
|
|
addedexcludes -= oldexcludes
|
|
|
removedexcludes &= oldexcludes
|
|
|
|
|
|
widening = addedincludes or removedexcludes
|
|
|
narrowing = removedincludes or addedexcludes
|
|
|
|
|
|
# Only print the current narrowspec.
|
|
|
if only_show:
|
|
|
ui.pager('tracked')
|
|
|
fm = ui.formatter('narrow', opts)
|
|
|
for i in sorted(oldincludes):
|
|
|
fm.startitem()
|
|
|
fm.write('status', '%s ', 'I', label='narrow.included')
|
|
|
fm.write('pat', '%s\n', i, label='narrow.included')
|
|
|
for i in sorted(oldexcludes):
|
|
|
fm.startitem()
|
|
|
fm.write('status', '%s ', 'X', label='narrow.excluded')
|
|
|
fm.write('pat', '%s\n', i, label='narrow.excluded')
|
|
|
fm.end()
|
|
|
return 0
|
|
|
|
|
|
if update_working_copy:
|
|
|
with repo.wlock(), repo.lock(), repo.transaction('narrow-wc'):
|
|
|
narrowspec.updateworkingcopy(repo)
|
|
|
narrowspec.copytoworkingcopy(repo)
|
|
|
return 0
|
|
|
|
|
|
if not widening and not narrowing:
|
|
|
ui.status(_("nothing to widen or narrow\n"))
|
|
|
return 0
|
|
|
|
|
|
with repo.wlock(), repo.lock():
|
|
|
cmdutil.bailifchanged(repo)
|
|
|
|
|
|
# Find the revisions we have in common with the remote. These will
|
|
|
# be used for finding local-only changes for narrowing. They will
|
|
|
# also define the set of revisions to update for widening.
|
|
|
remotepath = ui.expandpath(remotepath or 'default')
|
|
|
url, branches = hg.parseurl(remotepath)
|
|
|
ui.status(_('comparing with %s\n') % util.hidepassword(url))
|
|
|
remote = hg.peer(repo, opts, url)
|
|
|
|
|
|
# check narrow support before doing anything if widening needs to be
|
|
|
# performed. In future we should also abort if client is ellipses and
|
|
|
# server does not support ellipses
|
|
|
if widening and wireprototypes.NARROWCAP not in remote.capabilities():
|
|
|
raise error.Abort(_("server does not support narrow clones"))
|
|
|
|
|
|
commoninc = discovery.findcommonincoming(repo, remote)
|
|
|
|
|
|
if narrowing:
|
|
|
newincludes = oldincludes - removedincludes
|
|
|
newexcludes = oldexcludes | addedexcludes
|
|
|
_narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes,
|
|
|
newincludes, newexcludes,
|
|
|
opts['force_delete_local_changes'])
|
|
|
# _narrow() updated the narrowspec and _widen() below needs to
|
|
|
# use the updated values as its base (otherwise removed includes
|
|
|
# and addedexcludes will be lost in the resulting narrowspec)
|
|
|
oldincludes = newincludes
|
|
|
oldexcludes = newexcludes
|
|
|
|
|
|
if widening:
|
|
|
newincludes = oldincludes | addedincludes
|
|
|
newexcludes = oldexcludes - removedexcludes
|
|
|
_widen(ui, repo, remote, commoninc, oldincludes, oldexcludes,
|
|
|
newincludes, newexcludes)
|
|
|
|
|
|
return 0
|
|
|
|
