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# sparse.py - functionality for sparse checkouts
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#
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# Copyright 2014 Facebook, 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 collections
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import hashlib
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import os
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from .i18n import _
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from .node import nullid
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from . import (
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error,
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match as matchmod,
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merge as mergemod,
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pycompat,
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util,
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)
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# Whether sparse features are enabled. This variable is intended to be
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# temporary to facilitate porting sparse to core. It should eventually be
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# a per-repo option, possibly a repo requirement.
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enabled = False
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def parseconfig(ui, raw):
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"""Parse sparse config file content.
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Returns a tuple of includes, excludes, and profiles.
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"""
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includes = set()
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excludes = set()
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current = includes
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profiles = []
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for line in raw.split('\n'):
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line = line.strip()
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if not line or line.startswith('#'):
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# empty or comment line, skip
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continue
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elif line.startswith('%include '):
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line = line[9:].strip()
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if line:
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profiles.append(line)
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elif line == '[include]':
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if current != includes:
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# TODO pass filename into this API so we can report it.
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raise error.Abort(_('sparse config cannot have includes ' +
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'after excludes'))
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continue
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elif line == '[exclude]':
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current = excludes
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elif line:
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if line.strip().startswith('/'):
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ui.warn(_('warning: sparse profile cannot use' +
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' paths starting with /, ignoring %s\n') % line)
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continue
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current.add(line)
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return includes, excludes, profiles
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# Exists as separate function to facilitate monkeypatching.
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def readprofile(repo, profile, changeid):
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"""Resolve the raw content of a sparse profile file."""
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# TODO add some kind of cache here because this incurs a manifest
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# resolve and can be slow.
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return repo.filectx(profile, changeid=changeid).data()
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def patternsforrev(repo, rev):
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"""Obtain sparse checkout patterns for the given rev.
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Returns a tuple of iterables representing includes, excludes, and
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patterns.
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"""
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# Feature isn't enabled. No-op.
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if not enabled:
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return set(), set(), []
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raw = repo.vfs.tryread('sparse')
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if not raw:
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return set(), set(), []
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if rev is None:
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raise error.Abort(_('cannot parse sparse patterns from working '
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'directory'))
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includes, excludes, profiles = parseconfig(repo.ui, raw)
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ctx = repo[rev]
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if profiles:
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visited = set()
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while profiles:
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profile = profiles.pop()
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if profile in visited:
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continue
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visited.add(profile)
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try:
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raw = readprofile(repo, profile, rev)
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except error.ManifestLookupError:
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msg = (
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"warning: sparse profile '%s' not found "
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"in rev %s - ignoring it\n" % (profile, ctx))
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# experimental config: sparse.missingwarning
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if repo.ui.configbool(
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'sparse', 'missingwarning'):
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repo.ui.warn(msg)
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else:
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repo.ui.debug(msg)
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continue
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pincludes, pexcludes, subprofs = parseconfig(repo.ui, raw)
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includes.update(pincludes)
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excludes.update(pexcludes)
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for subprofile in subprofs:
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profiles.append(subprofile)
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profiles = visited
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if includes:
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includes.add('.hg*')
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return includes, excludes, profiles
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def activeconfig(repo):
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"""Determine the active sparse config rules.
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Rules are constructed by reading the current sparse config and bringing in
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referenced profiles from parents of the working directory.
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"""
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revs = [repo.changelog.rev(node) for node in
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repo.dirstate.parents() if node != nullid]
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allincludes = set()
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allexcludes = set()
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allprofiles = set()
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for rev in revs:
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includes, excludes, profiles = patternsforrev(repo, rev)
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allincludes |= includes
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allexcludes |= excludes
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allprofiles |= set(profiles)
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return allincludes, allexcludes, allprofiles
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def configsignature(repo, includetemp=True):
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"""Obtain the signature string for the current sparse configuration.
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This is used to construct a cache key for matchers.
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"""
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cache = repo._sparsesignaturecache
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signature = cache.get('signature')
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if includetemp:
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tempsignature = cache.get('tempsignature')
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else:
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tempsignature = '0'
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if signature is None or (includetemp and tempsignature is None):
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signature = hashlib.sha1(repo.vfs.tryread('sparse')).hexdigest()
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cache['signature'] = signature
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if includetemp:
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raw = repo.vfs.tryread('tempsparse')
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tempsignature = hashlib.sha1(raw).hexdigest()
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cache['tempsignature'] = tempsignature
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return '%s %s' % (signature, tempsignature)
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def writeconfig(repo, includes, excludes, profiles):
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"""Write the sparse config file given a sparse configuration."""
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with repo.vfs('sparse', 'wb') as fh:
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for p in sorted(profiles):
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fh.write('%%include %s\n' % p)
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if includes:
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fh.write('[include]\n')
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for i in sorted(includes):
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fh.write(i)
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fh.write('\n')
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if excludes:
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fh.write('[exclude]\n')
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for e in sorted(excludes):
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fh.write(e)
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fh.write('\n')
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repo._sparsesignaturecache.clear()
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def readtemporaryincludes(repo):
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raw = repo.vfs.tryread('tempsparse')
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if not raw:
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return set()
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return set(raw.split('\n'))
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def writetemporaryincludes(repo, includes):
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repo.vfs.write('tempsparse', '\n'.join(sorted(includes)))
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repo._sparsesignaturecache.clear()
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def addtemporaryincludes(repo, additional):
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includes = readtemporaryincludes(repo)
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for i in additional:
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includes.add(i)
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writetemporaryincludes(repo, includes)
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def prunetemporaryincludes(repo):
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if not enabled or not repo.vfs.exists('tempsparse'):
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return
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s = repo.status()
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if s.modified or s.added or s.removed or s.deleted:
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# Still have pending changes. Don't bother trying to prune.
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return
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sparsematch = matcher(repo, includetemp=False)
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dirstate = repo.dirstate
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actions = []
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dropped = []
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tempincludes = readtemporaryincludes(repo)
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for file in tempincludes:
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if file in dirstate and not sparsematch(file):
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message = _('dropping temporarily included sparse files')
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actions.append((file, None, message))
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dropped.append(file)
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typeactions = collections.defaultdict(list)
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typeactions['r'] = actions
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mergemod.applyupdates(repo, typeactions, repo[None], repo['.'], False)
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# Fix dirstate
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for file in dropped:
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dirstate.drop(file)
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repo.vfs.unlink('tempsparse')
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repo._sparsesignaturecache.clear()
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msg = _('cleaned up %d temporarily added file(s) from the '
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'sparse checkout\n')
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repo.ui.status(msg % len(tempincludes))
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def forceincludematcher(matcher, includes):
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"""Returns a matcher that returns true for any of the forced includes
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before testing against the actual matcher."""
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kindpats = [('path', include, '') for include in includes]
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includematcher = matchmod.includematcher('', '', kindpats)
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return matchmod.unionmatcher([includematcher, matcher])
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def matcher(repo, revs=None, includetemp=True):
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"""Obtain a matcher for sparse working directories for the given revs.
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If multiple revisions are specified, the matcher is the union of all
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revs.
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``includetemp`` indicates whether to use the temporary sparse profile.
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"""
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# If sparse isn't enabled, sparse matcher matches everything.
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if not enabled:
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return matchmod.always(repo.root, '')
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if not revs or revs == [None]:
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revs = [repo.changelog.rev(node)
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for node in repo.dirstate.parents() if node != nullid]
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signature = configsignature(repo, includetemp=includetemp)
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key = '%s %s' % (signature, ' '.join(map(pycompat.bytestr, revs)))
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result = repo._sparsematchercache.get(key)
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if result:
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return result
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matchers = []
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for rev in revs:
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try:
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includes, excludes, profiles = patternsforrev(repo, rev)
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if includes or excludes:
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# Explicitly include subdirectories of includes so
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# status will walk them down to the actual include.
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subdirs = set()
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for include in includes:
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# TODO consider using posix path functions here so Windows
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# \ directory separators don't come into play.
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dirname = os.path.dirname(include)
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# basename is used to avoid issues with absolute
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# paths (which on Windows can include the drive).
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while os.path.basename(dirname):
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subdirs.add(dirname)
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dirname = os.path.dirname(dirname)
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matcher = matchmod.match(repo.root, '', [],
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include=includes, exclude=excludes,
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default='relpath')
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if subdirs:
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matcher = forceincludematcher(matcher, subdirs)
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matchers.append(matcher)
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except IOError:
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pass
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if not matchers:
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result = matchmod.always(repo.root, '')
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elif len(matchers) == 1:
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result = matchers[0]
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else:
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result = matchmod.unionmatcher(matchers)
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if includetemp:
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tempincludes = readtemporaryincludes(repo)
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result = forceincludematcher(result, tempincludes)
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repo._sparsematchercache[key] = result
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return result
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def filterupdatesactions(repo, wctx, mctx, branchmerge, actions):
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"""Filter updates to only lay out files that match the sparse rules."""
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if not enabled:
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return actions
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oldrevs = [pctx.rev() for pctx in wctx.parents()]
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oldsparsematch = matcher(repo, oldrevs)
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if oldsparsematch.always():
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return actions
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files = set()
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prunedactions = {}
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if branchmerge:
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# If we're merging, use the wctx filter, since we're merging into
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# the wctx.
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sparsematch = matcher(repo, [wctx.parents()[0].rev()])
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else:
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# If we're updating, use the target context's filter, since we're
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# moving to the target context.
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sparsematch = matcher(repo, [mctx.rev()])
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temporaryfiles = []
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for file, action in actions.iteritems():
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type, args, msg = action
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files.add(file)
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if sparsematch(file):
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prunedactions[file] = action
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elif type == 'm':
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temporaryfiles.append(file)
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prunedactions[file] = action
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elif branchmerge:
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if type != 'k':
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temporaryfiles.append(file)
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prunedactions[file] = action
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elif type == 'f':
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prunedactions[file] = action
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elif file in wctx:
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prunedactions[file] = ('r', args, msg)
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if len(temporaryfiles) > 0:
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repo.ui.status(_('temporarily included %d file(s) in the sparse '
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'checkout for merging\n') % len(temporaryfiles))
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addtemporaryincludes(repo, temporaryfiles)
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# Add the new files to the working copy so they can be merged, etc
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actions = []
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message = 'temporarily adding to sparse checkout'
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wctxmanifest = repo[None].manifest()
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for file in temporaryfiles:
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if file in wctxmanifest:
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fctx = repo[None][file]
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actions.append((file, (fctx.flags(), False), message))
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typeactions = collections.defaultdict(list)
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typeactions['g'] = actions
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mergemod.applyupdates(repo, typeactions, repo[None], repo['.'],
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False)
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dirstate = repo.dirstate
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for file, flags, msg in actions:
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dirstate.normal(file)
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profiles = activeconfig(repo)[2]
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changedprofiles = profiles & files
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# If an active profile changed during the update, refresh the checkout.
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# Don't do this during a branch merge, since all incoming changes should
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# have been handled by the temporary includes above.
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if changedprofiles and not branchmerge:
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mf = mctx.manifest()
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for file in mf:
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old = oldsparsematch(file)
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new = sparsematch(file)
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if not old and new:
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flags = mf.flags(file)
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prunedactions[file] = ('g', (flags, False), '')
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elif old and not new:
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prunedactions[file] = ('r', [], '')
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return prunedactions
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def refreshwdir(repo, origstatus, origsparsematch, force=False):
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"""Refreshes working directory by taking sparse config into account.
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The old status and sparse matcher is compared against the current sparse
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matcher.
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Will abort if a file with pending changes is being excluded or included
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unless ``force`` is True.
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"""
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# Verify there are no pending changes
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pending = set()
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pending.update(origstatus.modified)
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pending.update(origstatus.added)
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pending.update(origstatus.removed)
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sparsematch = matcher(repo)
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abort = False
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for f in pending:
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if not sparsematch(f):
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repo.ui.warn(_("pending changes to '%s'\n") % f)
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abort = not force
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if abort:
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raise error.Abort(_('could not update sparseness due to pending '
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'changes'))
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# Calculate actions
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dirstate = repo.dirstate
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ctx = repo['.']
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added = []
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lookup = []
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dropped = []
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mf = ctx.manifest()
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files = set(mf)
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actions = {}
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for file in files:
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old = origsparsematch(file)
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new = sparsematch(file)
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# Add files that are newly included, or that don't exist in
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# the dirstate yet.
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if (new and not old) or (old and new and not file in dirstate):
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fl = mf.flags(file)
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if repo.wvfs.exists(file):
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actions[file] = ('e', (fl,), '')
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lookup.append(file)
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else:
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actions[file] = ('g', (fl, False), '')
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added.append(file)
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# Drop files that are newly excluded, or that still exist in
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# the dirstate.
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elif (old and not new) or (not old and not new and file in dirstate):
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dropped.append(file)
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if file not in pending:
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actions[file] = ('r', [], '')
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# Verify there are no pending changes in newly included files
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abort = False
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for file in lookup:
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repo.ui.warn(_("pending changes to '%s'\n") % file)
|
|
|
abort = not force
|
|
|
if abort:
|
|
|
raise error.Abort(_('cannot change sparseness due to pending '
|
|
|
'changes (delete the files or use '
|
|
|
'--force to bring them back dirty)'))
|
|
|
|
|
|
# Check for files that were only in the dirstate.
|
|
|
for file, state in dirstate.iteritems():
|
|
|
if not file in files:
|
|
|
old = origsparsematch(file)
|
|
|
new = sparsematch(file)
|
|
|
if old and not new:
|
|
|
dropped.append(file)
|
|
|
|
|
|
# Apply changes to disk
|
|
|
typeactions = dict((m, []) for m in 'a f g am cd dc r dm dg m e k'.split())
|
|
|
for f, (m, args, msg) in actions.iteritems():
|
|
|
if m not in typeactions:
|
|
|
typeactions[m] = []
|
|
|
typeactions[m].append((f, args, msg))
|
|
|
|
|
|
mergemod.applyupdates(repo, typeactions, repo[None], repo['.'], False)
|
|
|
|
|
|
# Fix dirstate
|
|
|
for file in added:
|
|
|
dirstate.normal(file)
|
|
|
|
|
|
for file in dropped:
|
|
|
dirstate.drop(file)
|
|
|
|
|
|
for file in lookup:
|
|
|
# File exists on disk, and we're bringing it back in an unknown state.
|
|
|
dirstate.normallookup(file)
|
|
|
|
|
|
return added, dropped, lookup
|
|
|
|
|
|
def aftercommit(repo, node):
|
|
|
"""Perform actions after a working directory commit."""
|
|
|
# This function is called unconditionally, even if sparse isn't
|
|
|
# enabled.
|
|
|
ctx = repo[node]
|
|
|
|
|
|
profiles = patternsforrev(repo, ctx.rev())[2]
|
|
|
|
|
|
# profiles will only have data if sparse is enabled.
|
|
|
if set(profiles) & set(ctx.files()):
|
|
|
origstatus = repo.status()
|
|
|
origsparsematch = matcher(repo)
|
|
|
refreshwdir(repo, origstatus, origsparsematch, force=True)
|
|
|
|
|
|
prunetemporaryincludes(repo)
|
|
|
|
|
|
def clearrules(repo, force=False):
|
|
|
"""Clears include/exclude rules from the sparse config.
|
|
|
|
|
|
The remaining sparse config only has profiles, if defined. The working
|
|
|
directory is refreshed, as needed.
|
|
|
"""
|
|
|
with repo.wlock():
|
|
|
raw = repo.vfs.tryread('sparse')
|
|
|
includes, excludes, profiles = parseconfig(repo.ui, raw)
|
|
|
|
|
|
if not includes and not excludes:
|
|
|
return
|
|
|
|
|
|
oldstatus = repo.status()
|
|
|
oldmatch = matcher(repo)
|
|
|
writeconfig(repo, set(), set(), profiles)
|
|
|
refreshwdir(repo, oldstatus, oldmatch, force=force)
|
|
|
|
|
|
def importfromfiles(repo, opts, paths, force=False):
|
|
|
"""Import sparse config rules from files.
|
|
|
|
|
|
The updated sparse config is written out and the working directory
|
|
|
is refreshed, as needed.
|
|
|
"""
|
|
|
with repo.wlock():
|
|
|
# read current configuration
|
|
|
raw = repo.vfs.tryread('sparse')
|
|
|
oincludes, oexcludes, oprofiles = parseconfig(repo.ui, raw)
|
|
|
includes, excludes, profiles = map(
|
|
|
set, (oincludes, oexcludes, oprofiles))
|
|
|
|
|
|
aincludes, aexcludes, aprofiles = activeconfig(repo)
|
|
|
|
|
|
# Import rules on top; only take in rules that are not yet
|
|
|
# part of the active rules.
|
|
|
changed = False
|
|
|
for p in paths:
|
|
|
with util.posixfile(util.expandpath(p)) as fh:
|
|
|
raw = fh.read()
|
|
|
|
|
|
iincludes, iexcludes, iprofiles = parseconfig(repo.ui, raw)
|
|
|
oldsize = len(includes) + len(excludes) + len(profiles)
|
|
|
includes.update(iincludes - aincludes)
|
|
|
excludes.update(iexcludes - aexcludes)
|
|
|
profiles.update(set(iprofiles) - aprofiles)
|
|
|
if len(includes) + len(excludes) + len(profiles) > oldsize:
|
|
|
changed = True
|
|
|
|
|
|
profilecount = includecount = excludecount = 0
|
|
|
fcounts = (0, 0, 0)
|
|
|
|
|
|
if changed:
|
|
|
profilecount = len(profiles - aprofiles)
|
|
|
includecount = len(includes - aincludes)
|
|
|
excludecount = len(excludes - aexcludes)
|
|
|
|
|
|
oldstatus = repo.status()
|
|
|
oldsparsematch = matcher(repo)
|
|
|
|
|
|
# TODO remove this try..except once the matcher integrates better
|
|
|
# with dirstate. We currently have to write the updated config
|
|
|
# because that will invalidate the matcher cache and force a
|
|
|
# re-read. We ideally want to update the cached matcher on the
|
|
|
# repo instance then flush the new config to disk once wdir is
|
|
|
# updated. But this requires massive rework to matcher() and its
|
|
|
# consumers.
|
|
|
writeconfig(repo, includes, excludes, profiles)
|
|
|
|
|
|
try:
|
|
|
fcounts = map(
|
|
|
len,
|
|
|
refreshwdir(repo, oldstatus, oldsparsematch, force=force))
|
|
|
except Exception:
|
|
|
writeconfig(repo, oincludes, oexcludes, oprofiles)
|
|
|
raise
|
|
|
|
|
|
printchanges(repo.ui, opts, profilecount, includecount, excludecount,
|
|
|
*fcounts)
|
|
|
|
|
|
def updateconfig(repo, pats, opts, include=False, exclude=False, reset=False,
|
|
|
delete=False, enableprofile=False, disableprofile=False,
|
|
|
force=False):
|
|
|
"""Perform a sparse config update.
|
|
|
|
|
|
Only one of the actions may be performed.
|
|
|
|
|
|
The new config is written out and a working directory refresh is performed.
|
|
|
"""
|
|
|
with repo.wlock():
|
|
|
oldmatcher = matcher(repo)
|
|
|
|
|
|
raw = repo.vfs.tryread('sparse')
|
|
|
oldinclude, oldexclude, oldprofiles = parseconfig(repo.ui, raw)
|
|
|
oldprofiles = set(oldprofiles)
|
|
|
|
|
|
if reset:
|
|
|
newinclude = set()
|
|
|
newexclude = set()
|
|
|
newprofiles = set()
|
|
|
else:
|
|
|
newinclude = set(oldinclude)
|
|
|
newexclude = set(oldexclude)
|
|
|
newprofiles = set(oldprofiles)
|
|
|
|
|
|
oldstatus = repo.status()
|
|
|
|
|
|
if any(pat.startswith('/') for pat in pats):
|
|
|
repo.ui.warn(_('warning: paths cannot start with /, ignoring: %s\n')
|
|
|
% ([pat for pat in pats if pat.startswith('/')]))
|
|
|
elif include:
|
|
|
newinclude.update(pats)
|
|
|
elif exclude:
|
|
|
newexclude.update(pats)
|
|
|
elif enableprofile:
|
|
|
newprofiles.update(pats)
|
|
|
elif disableprofile:
|
|
|
newprofiles.difference_update(pats)
|
|
|
elif delete:
|
|
|
newinclude.difference_update(pats)
|
|
|
newexclude.difference_update(pats)
|
|
|
|
|
|
profilecount = (len(newprofiles - oldprofiles) -
|
|
|
len(oldprofiles - newprofiles))
|
|
|
includecount = (len(newinclude - oldinclude) -
|
|
|
len(oldinclude - newinclude))
|
|
|
excludecount = (len(newexclude - oldexclude) -
|
|
|
len(oldexclude - newexclude))
|
|
|
|
|
|
# TODO clean up this writeconfig() + try..except pattern once we can.
|
|
|
# See comment in importfromfiles() explaining it.
|
|
|
writeconfig(repo, newinclude, newexclude, newprofiles)
|
|
|
|
|
|
try:
|
|
|
fcounts = map(
|
|
|
len,
|
|
|
refreshwdir(repo, oldstatus, oldmatcher, force=force))
|
|
|
|
|
|
printchanges(repo.ui, opts, profilecount, includecount,
|
|
|
excludecount, *fcounts)
|
|
|
except Exception:
|
|
|
writeconfig(repo, oldinclude, oldexclude, oldprofiles)
|
|
|
raise
|
|
|
|
|
|
def printchanges(ui, opts, profilecount=0, includecount=0, excludecount=0,
|
|
|
added=0, dropped=0, conflicting=0):
|
|
|
"""Print output summarizing sparse config changes."""
|
|
|
with ui.formatter('sparse', opts) as fm:
|
|
|
fm.startitem()
|
|
|
fm.condwrite(ui.verbose, 'profiles_added', _('Profiles changed: %d\n'),
|
|
|
profilecount)
|
|
|
fm.condwrite(ui.verbose, 'include_rules_added',
|
|
|
_('Include rules changed: %d\n'), includecount)
|
|
|
fm.condwrite(ui.verbose, 'exclude_rules_added',
|
|
|
_('Exclude rules changed: %d\n'), excludecount)
|
|
|
|
|
|
# In 'plain' verbose mode, mergemod.applyupdates already outputs what
|
|
|
# files are added or removed outside of the templating formatter
|
|
|
# framework. No point in repeating ourselves in that case.
|
|
|
if not fm.isplain():
|
|
|
fm.condwrite(ui.verbose, 'files_added', _('Files added: %d\n'),
|
|
|
added)
|
|
|
fm.condwrite(ui.verbose, 'files_dropped', _('Files dropped: %d\n'),
|
|
|
dropped)
|
|
|
fm.condwrite(ui.verbose, 'files_conflicting',
|
|
|
_('Files conflicting: %d\n'), conflicting)
|
|
|
|
