context: use a the nofsauditor when matching file in history (issue4749)
Before this change, asking for file from history (eg: 'hg cat -r 42 foo/bar')
could fail because of the current content of the working copy (eg: current
"foo" being a symlink). As the working copy state have no influence on the
content of the history, we can safely skip these checks.
The working copy context class have a different 'match'
implementation. That implementation still use the repo.auditor will
still catch symlink traversal.
I've audited all stuff calling "match" and they all go through a ctx
in a sensible way. The most unclear case was diff which still seemed
okay. You raised my paranoid level today and I double checked through
tests. They behave properly.
The odds of someone using the wrong (matching with a changectx for
operation that will eventually touch the file system) is non-zero
because you are never sure of what people will do. But I dunno if we
can fight against that. So I would not commit to "never" for "at this
level" and "in the future" if someone write especially bad code.
However, as a last defense, the vfs itself is running path auditor in
all cases outside of .hg/. So I think anything passing the 'matcher'
for buggy reason would growl at the vfs layer.
# context.py - changeset and file context objects for mercurial
#
# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import re
from node import nullid, nullrev, wdirid, short, hex, bin
from i18n import _
import mdiff, error, util, scmutil, subrepo, patch, encoding, phases
import match as matchmod
import os, errno, stat
import obsolete as obsmod
import repoview
import fileset
import revlog
propertycache = util.propertycache
# Phony node value to stand-in for new files in some uses of
# manifests. Manifests support 21-byte hashes for nodes which are
# dirty in the working copy.
_newnode = '!' * 21
nonascii = re.compile(r'[^\x21-\x7f]').search
class basectx(object):
"""A basectx object represents the common logic for its children:
changectx: read-only context that is already present in the repo,
workingctx: a context that represents the working directory and can
be committed,
memctx: a context that represents changes in-memory and can also
be committed."""
def __new__(cls, repo, changeid='', *args, **kwargs):
if isinstance(changeid, basectx):
return changeid
o = super(basectx, cls).__new__(cls)
o._repo = repo
o._rev = nullrev
o._node = nullid
return o
def __str__(self):
return short(self.node())
def __int__(self):
return self.rev()
def __repr__(self):
return "<%s %s>" % (type(self).__name__, str(self))
def __eq__(self, other):
try:
return type(self) == type(other) and self._rev == other._rev
except AttributeError:
return False
def __ne__(self, other):
return not (self == other)
def __contains__(self, key):
return key in self._manifest
def __getitem__(self, key):
return self.filectx(key)
def __iter__(self):
return iter(self._manifest)
def _manifestmatches(self, match, s):
"""generate a new manifest filtered by the match argument
This method is for internal use only and mainly exists to provide an
object oriented way for other contexts to customize the manifest
generation.
"""
return self.manifest().matches(match)
def _matchstatus(self, other, match):
"""return match.always if match is none
This internal method provides a way for child objects to override the
match operator.
"""
return match or matchmod.always(self._repo.root, self._repo.getcwd())
def _buildstatus(self, other, s, match, listignored, listclean,
listunknown):
"""build a status with respect to another context"""
# Load earliest manifest first for caching reasons. More specifically,
# if you have revisions 1000 and 1001, 1001 is probably stored as a
# delta against 1000. Thus, if you read 1000 first, we'll reconstruct
# 1000 and cache it so that when you read 1001, we just need to apply a
# delta to what's in the cache. So that's one full reconstruction + one
# delta application.
if self.rev() is not None and self.rev() < other.rev():
self.manifest()
mf1 = other._manifestmatches(match, s)
mf2 = self._manifestmatches(match, s)
modified, added = [], []
removed = []
clean = []
deleted, unknown, ignored = s.deleted, s.unknown, s.ignored
deletedset = set(deleted)
d = mf1.diff(mf2, clean=listclean)
for fn, value in d.iteritems():
if fn in deletedset:
continue
if value is None:
clean.append(fn)
continue
(node1, flag1), (node2, flag2) = value
if node1 is None:
added.append(fn)
elif node2 is None:
removed.append(fn)
elif node2 != _newnode:
# The file was not a new file in mf2, so an entry
# from diff is really a difference.
modified.append(fn)
elif self[fn].cmp(other[fn]):
# node2 was newnode, but the working file doesn't
# match the one in mf1.
modified.append(fn)
else:
clean.append(fn)
if removed:
# need to filter files if they are already reported as removed
unknown = [fn for fn in unknown if fn not in mf1]
ignored = [fn for fn in ignored if fn not in mf1]
# if they're deleted, don't report them as removed
removed = [fn for fn in removed if fn not in deletedset]
return scmutil.status(modified, added, removed, deleted, unknown,
ignored, clean)
@propertycache
def substate(self):
return subrepo.state(self, self._repo.ui)
def subrev(self, subpath):
return self.substate[subpath][1]
def rev(self):
return self._rev
def node(self):
return self._node
def hex(self):
return hex(self.node())
def manifest(self):
return self._manifest
def repo(self):
return self._repo
def phasestr(self):
return phases.phasenames[self.phase()]
def mutable(self):
return self.phase() > phases.public
def getfileset(self, expr):
return fileset.getfileset(self, expr)
def obsolete(self):
"""True if the changeset is obsolete"""
return self.rev() in obsmod.getrevs(self._repo, 'obsolete')
def extinct(self):
"""True if the changeset is extinct"""
return self.rev() in obsmod.getrevs(self._repo, 'extinct')
def unstable(self):
"""True if the changeset is not obsolete but it's ancestor are"""
return self.rev() in obsmod.getrevs(self._repo, 'unstable')
def bumped(self):
"""True if the changeset try to be a successor of a public changeset
Only non-public and non-obsolete changesets may be bumped.
"""
return self.rev() in obsmod.getrevs(self._repo, 'bumped')
def divergent(self):
"""Is a successors of a changeset with multiple possible successors set
Only non-public and non-obsolete changesets may be divergent.
"""
return self.rev() in obsmod.getrevs(self._repo, 'divergent')
def troubled(self):
"""True if the changeset is either unstable, bumped or divergent"""
return self.unstable() or self.bumped() or self.divergent()
def troubles(self):
"""return the list of troubles affecting this changesets.
Troubles are returned as strings. possible values are:
- unstable,
- bumped,
- divergent.
"""
troubles = []
if self.unstable():
troubles.append('unstable')
if self.bumped():
troubles.append('bumped')
if self.divergent():
troubles.append('divergent')
return troubles
def parents(self):
"""return contexts for each parent changeset"""
return self._parents
def p1(self):
return self._parents[0]
def p2(self):
parents = self._parents
if len(parents) == 2:
return parents[1]
return changectx(self._repo, nullrev)
def _fileinfo(self, path):
if '_manifest' in self.__dict__:
try:
return self._manifest[path], self._manifest.flags(path)
except KeyError:
raise error.ManifestLookupError(self._node, path,
_('not found in manifest'))
if '_manifestdelta' in self.__dict__ or path in self.files():
if path in self._manifestdelta:
return (self._manifestdelta[path],
self._manifestdelta.flags(path))
node, flag = self._repo.manifest.find(self._changeset[0], path)
if not node:
raise error.ManifestLookupError(self._node, path,
_('not found in manifest'))
return node, flag
def filenode(self, path):
return self._fileinfo(path)[0]
def flags(self, path):
try:
return self._fileinfo(path)[1]
except error.LookupError:
return ''
def sub(self, path):
'''return a subrepo for the stored revision of path, never wdir()'''
return subrepo.subrepo(self, path)
def nullsub(self, path, pctx):
return subrepo.nullsubrepo(self, path, pctx)
def workingsub(self, path):
'''return a subrepo for the stored revision, or wdir if this is a wdir
context.
'''
return subrepo.subrepo(self, path, allowwdir=True)
def match(self, pats=[], include=None, exclude=None, default='glob',
listsubrepos=False, badfn=None):
r = self._repo
return matchmod.match(r.root, r.getcwd(), pats,
include, exclude, default,
auditor=r.nofsauditor, ctx=self,
listsubrepos=listsubrepos, badfn=badfn)
def diff(self, ctx2=None, match=None, **opts):
"""Returns a diff generator for the given contexts and matcher"""
if ctx2 is None:
ctx2 = self.p1()
if ctx2 is not None:
ctx2 = self._repo[ctx2]
diffopts = patch.diffopts(self._repo.ui, opts)
return patch.diff(self._repo, ctx2, self, match=match, opts=diffopts)
def dirs(self):
return self._manifest.dirs()
def hasdir(self, dir):
return self._manifest.hasdir(dir)
def dirty(self, missing=False, merge=True, branch=True):
return False
def status(self, other=None, match=None, listignored=False,
listclean=False, listunknown=False, listsubrepos=False):
"""return status of files between two nodes or node and working
directory.
If other is None, compare this node with working directory.
returns (modified, added, removed, deleted, unknown, ignored, clean)
"""
ctx1 = self
ctx2 = self._repo[other]
# This next code block is, admittedly, fragile logic that tests for
# reversing the contexts and wouldn't need to exist if it weren't for
# the fast (and common) code path of comparing the working directory
# with its first parent.
#
# What we're aiming for here is the ability to call:
#
# workingctx.status(parentctx)
#
# If we always built the manifest for each context and compared those,
# then we'd be done. But the special case of the above call means we
# just copy the manifest of the parent.
reversed = False
if (not isinstance(ctx1, changectx)
and isinstance(ctx2, changectx)):
reversed = True
ctx1, ctx2 = ctx2, ctx1
match = ctx2._matchstatus(ctx1, match)
r = scmutil.status([], [], [], [], [], [], [])
r = ctx2._buildstatus(ctx1, r, match, listignored, listclean,
listunknown)
if reversed:
# Reverse added and removed. Clear deleted, unknown and ignored as
# these make no sense to reverse.
r = scmutil.status(r.modified, r.removed, r.added, [], [], [],
r.clean)
if listsubrepos:
for subpath, sub in scmutil.itersubrepos(ctx1, ctx2):
try:
rev2 = ctx2.subrev(subpath)
except KeyError:
# A subrepo that existed in node1 was deleted between
# node1 and node2 (inclusive). Thus, ctx2's substate
# won't contain that subpath. The best we can do ignore it.
rev2 = None
submatch = matchmod.narrowmatcher(subpath, match)
s = sub.status(rev2, match=submatch, ignored=listignored,
clean=listclean, unknown=listunknown,
listsubrepos=True)
for rfiles, sfiles in zip(r, s):
rfiles.extend("%s/%s" % (subpath, f) for f in sfiles)
for l in r:
l.sort()
return r
def makememctx(repo, parents, text, user, date, branch, files, store,
editor=None, extra=None):
def getfilectx(repo, memctx, path):
data, mode, copied = store.getfile(path)
if data is None:
return None
islink, isexec = mode
return memfilectx(repo, path, data, islink=islink, isexec=isexec,
copied=copied, memctx=memctx)
if extra is None:
extra = {}
if branch:
extra['branch'] = encoding.fromlocal(branch)
ctx = memctx(repo, parents, text, files, getfilectx, user,
date, extra, editor)
return ctx
class changectx(basectx):
"""A changecontext object makes access to data related to a particular
changeset convenient. It represents a read-only context already present in
the repo."""
def __init__(self, repo, changeid=''):
"""changeid is a revision number, node, or tag"""
# since basectx.__new__ already took care of copying the object, we
# don't need to do anything in __init__, so we just exit here
if isinstance(changeid, basectx):
return
if changeid == '':
changeid = '.'
self._repo = repo
try:
if isinstance(changeid, int):
self._node = repo.changelog.node(changeid)
self._rev = changeid
return
if isinstance(changeid, long):
changeid = str(changeid)
if changeid == 'null':
self._node = nullid
self._rev = nullrev
return
if changeid == 'tip':
self._node = repo.changelog.tip()
self._rev = repo.changelog.rev(self._node)
return
if changeid == '.' or changeid == repo.dirstate.p1():
# this is a hack to delay/avoid loading obsmarkers
# when we know that '.' won't be hidden
self._node = repo.dirstate.p1()
self._rev = repo.unfiltered().changelog.rev(self._node)
return
if len(changeid) == 20:
try:
self._node = changeid
self._rev = repo.changelog.rev(changeid)
return
except error.FilteredRepoLookupError:
raise
except LookupError:
pass
try:
r = int(changeid)
if str(r) != changeid:
raise ValueError
l = len(repo.changelog)
if r < 0:
r += l
if r < 0 or r >= l:
raise ValueError
self._rev = r
self._node = repo.changelog.node(r)
return
except error.FilteredIndexError:
raise
except (ValueError, OverflowError, IndexError):
pass
if len(changeid) == 40:
try:
self._node = bin(changeid)
self._rev = repo.changelog.rev(self._node)
return
except error.FilteredLookupError:
raise
except (TypeError, LookupError):
pass
# lookup bookmarks through the name interface
try:
self._node = repo.names.singlenode(repo, changeid)
self._rev = repo.changelog.rev(self._node)
return
except KeyError:
pass
except error.FilteredRepoLookupError:
raise
except error.RepoLookupError:
pass
self._node = repo.unfiltered().changelog._partialmatch(changeid)
if self._node is not None:
self._rev = repo.changelog.rev(self._node)
return
# lookup failed
# check if it might have come from damaged dirstate
#
# XXX we could avoid the unfiltered if we had a recognizable
# exception for filtered changeset access
if changeid in repo.unfiltered().dirstate.parents():
msg = _("working directory has unknown parent '%s'!")
raise error.Abort(msg % short(changeid))
try:
if len(changeid) == 20 and nonascii(changeid):
changeid = hex(changeid)
except TypeError:
pass
except (error.FilteredIndexError, error.FilteredLookupError,
error.FilteredRepoLookupError):
if repo.filtername.startswith('visible'):
msg = _("hidden revision '%s'") % changeid
hint = _('use --hidden to access hidden revisions')
raise error.FilteredRepoLookupError(msg, hint=hint)
msg = _("filtered revision '%s' (not in '%s' subset)")
msg %= (changeid, repo.filtername)
raise error.FilteredRepoLookupError(msg)
except IndexError:
pass
raise error.RepoLookupError(
_("unknown revision '%s'") % changeid)
def __hash__(self):
try:
return hash(self._rev)
except AttributeError:
return id(self)
def __nonzero__(self):
return self._rev != nullrev
@propertycache
def _changeset(self):
return self._repo.changelog.read(self.rev())
@propertycache
def _manifest(self):
return self._repo.manifest.read(self._changeset[0])
@propertycache
def _manifestdelta(self):
return self._repo.manifest.readdelta(self._changeset[0])
@propertycache
def _parents(self):
repo = self._repo
p1, p2 = repo.changelog.parentrevs(self._rev)
if p2 == nullrev:
return [changectx(repo, p1)]
return [changectx(repo, p1), changectx(repo, p2)]
def changeset(self):
return self._changeset
def manifestnode(self):
return self._changeset[0]
def user(self):
return self._changeset[1]
def date(self):
return self._changeset[2]
def files(self):
return self._changeset[3]
def description(self):
return self._changeset[4]
def branch(self):
return encoding.tolocal(self._changeset[5].get("branch"))
def closesbranch(self):
return 'close' in self._changeset[5]
def extra(self):
return self._changeset[5]
def tags(self):
return self._repo.nodetags(self._node)
def bookmarks(self):
return self._repo.nodebookmarks(self._node)
def phase(self):
return self._repo._phasecache.phase(self._repo, self._rev)
def hidden(self):
return self._rev in repoview.filterrevs(self._repo, 'visible')
def children(self):
"""return contexts for each child changeset"""
c = self._repo.changelog.children(self._node)
return [changectx(self._repo, x) for x in c]
def ancestors(self):
for a in self._repo.changelog.ancestors([self._rev]):
yield changectx(self._repo, a)
def descendants(self):
for d in self._repo.changelog.descendants([self._rev]):
yield changectx(self._repo, d)
def filectx(self, path, fileid=None, filelog=None):
"""get a file context from this changeset"""
if fileid is None:
fileid = self.filenode(path)
return filectx(self._repo, path, fileid=fileid,
changectx=self, filelog=filelog)
def ancestor(self, c2, warn=False):
"""return the "best" ancestor context of self and c2
If there are multiple candidates, it will show a message and check
merge.preferancestor configuration before falling back to the
revlog ancestor."""
# deal with workingctxs
n2 = c2._node
if n2 is None:
n2 = c2._parents[0]._node
cahs = self._repo.changelog.commonancestorsheads(self._node, n2)
if not cahs:
anc = nullid
elif len(cahs) == 1:
anc = cahs[0]
else:
# experimental config: merge.preferancestor
for r in self._repo.ui.configlist('merge', 'preferancestor', ['*']):
try:
ctx = changectx(self._repo, r)
except error.RepoLookupError:
continue
anc = ctx.node()
if anc in cahs:
break
else:
anc = self._repo.changelog.ancestor(self._node, n2)
if warn:
self._repo.ui.status(
(_("note: using %s as ancestor of %s and %s\n") %
(short(anc), short(self._node), short(n2))) +
''.join(_(" alternatively, use --config "
"merge.preferancestor=%s\n") %
short(n) for n in sorted(cahs) if n != anc))
return changectx(self._repo, anc)
def descendant(self, other):
"""True if other is descendant of this changeset"""
return self._repo.changelog.descendant(self._rev, other._rev)
def walk(self, match):
'''Generates matching file names.'''
# Wrap match.bad method to have message with nodeid
def bad(fn, msg):
# The manifest doesn't know about subrepos, so don't complain about
# paths into valid subrepos.
if any(fn == s or fn.startswith(s + '/')
for s in self.substate):
return
match.bad(fn, _('no such file in rev %s') % self)
m = matchmod.badmatch(match, bad)
return self._manifest.walk(m)
def matches(self, match):
return self.walk(match)
class basefilectx(object):
"""A filecontext object represents the common logic for its children:
filectx: read-only access to a filerevision that is already present
in the repo,
workingfilectx: a filecontext that represents files from the working
directory,
memfilectx: a filecontext that represents files in-memory."""
def __new__(cls, repo, path, *args, **kwargs):
return super(basefilectx, cls).__new__(cls)
@propertycache
def _filelog(self):
return self._repo.file(self._path)
@propertycache
def _changeid(self):
if '_changeid' in self.__dict__:
return self._changeid
elif '_changectx' in self.__dict__:
return self._changectx.rev()
elif '_descendantrev' in self.__dict__:
# this file context was created from a revision with a known
# descendant, we can (lazily) correct for linkrev aliases
return self._adjustlinkrev(self._path, self._filelog,
self._filenode, self._descendantrev)
else:
return self._filelog.linkrev(self._filerev)
@propertycache
def _filenode(self):
if '_fileid' in self.__dict__:
return self._filelog.lookup(self._fileid)
else:
return self._changectx.filenode(self._path)
@propertycache
def _filerev(self):
return self._filelog.rev(self._filenode)
@propertycache
def _repopath(self):
return self._path
def __nonzero__(self):
try:
self._filenode
return True
except error.LookupError:
# file is missing
return False
def __str__(self):
return "%s@%s" % (self.path(), self._changectx)
def __repr__(self):
return "<%s %s>" % (type(self).__name__, str(self))
def __hash__(self):
try:
return hash((self._path, self._filenode))
except AttributeError:
return id(self)
def __eq__(self, other):
try:
return (type(self) == type(other) and self._path == other._path
and self._filenode == other._filenode)
except AttributeError:
return False
def __ne__(self, other):
return not (self == other)
def filerev(self):
return self._filerev
def filenode(self):
return self._filenode
def flags(self):
return self._changectx.flags(self._path)
def filelog(self):
return self._filelog
def rev(self):
return self._changeid
def linkrev(self):
return self._filelog.linkrev(self._filerev)
def node(self):
return self._changectx.node()
def hex(self):
return self._changectx.hex()
def user(self):
return self._changectx.user()
def date(self):
return self._changectx.date()
def files(self):
return self._changectx.files()
def description(self):
return self._changectx.description()
def branch(self):
return self._changectx.branch()
def extra(self):
return self._changectx.extra()
def phase(self):
return self._changectx.phase()
def phasestr(self):
return self._changectx.phasestr()
def manifest(self):
return self._changectx.manifest()
def changectx(self):
return self._changectx
def repo(self):
return self._repo
def path(self):
return self._path
def isbinary(self):
try:
return util.binary(self.data())
except IOError:
return False
def isexec(self):
return 'x' in self.flags()
def islink(self):
return 'l' in self.flags()
def isabsent(self):
"""whether this filectx represents a file not in self._changectx
This is mainly for merge code to detect change/delete conflicts. This is
expected to be True for all subclasses of basectx."""
return False
_customcmp = False
def cmp(self, fctx):
"""compare with other file context
returns True if different than fctx.
"""
if fctx._customcmp:
return fctx.cmp(self)
if (fctx._filerev is None
and (self._repo._encodefilterpats
# if file data starts with '\1\n', empty metadata block is
# prepended, which adds 4 bytes to filelog.size().
or self.size() - 4 == fctx.size())
or self.size() == fctx.size()):
return self._filelog.cmp(self._filenode, fctx.data())
return True
def _adjustlinkrev(self, path, filelog, fnode, srcrev, inclusive=False):
"""return the first ancestor of <srcrev> introducing <fnode>
If the linkrev of the file revision does not point to an ancestor of
srcrev, we'll walk down the ancestors until we find one introducing
this file revision.
:repo: a localrepository object (used to access changelog and manifest)
:path: the file path
:fnode: the nodeid of the file revision
:filelog: the filelog of this path
:srcrev: the changeset revision we search ancestors from
:inclusive: if true, the src revision will also be checked
"""
repo = self._repo
cl = repo.unfiltered().changelog
ma = repo.manifest
# fetch the linkrev
fr = filelog.rev(fnode)
lkr = filelog.linkrev(fr)
# hack to reuse ancestor computation when searching for renames
memberanc = getattr(self, '_ancestrycontext', None)
iteranc = None
if srcrev is None:
# wctx case, used by workingfilectx during mergecopy
revs = [p.rev() for p in self._repo[None].parents()]
inclusive = True # we skipped the real (revless) source
else:
revs = [srcrev]
if memberanc is None:
memberanc = iteranc = cl.ancestors(revs, lkr,
inclusive=inclusive)
# check if this linkrev is an ancestor of srcrev
if lkr not in memberanc:
if iteranc is None:
iteranc = cl.ancestors(revs, lkr, inclusive=inclusive)
for a in iteranc:
ac = cl.read(a) # get changeset data (we avoid object creation)
if path in ac[3]: # checking the 'files' field.
# The file has been touched, check if the content is
# similar to the one we search for.
if fnode == ma.readfast(ac[0]).get(path):
return a
# In theory, we should never get out of that loop without a result.
# But if manifest uses a buggy file revision (not children of the
# one it replaces) we could. Such a buggy situation will likely
# result is crash somewhere else at to some point.
return lkr
def introrev(self):
"""return the rev of the changeset which introduced this file revision
This method is different from linkrev because it take into account the
changeset the filectx was created from. It ensures the returned
revision is one of its ancestors. This prevents bugs from
'linkrev-shadowing' when a file revision is used by multiple
changesets.
"""
lkr = self.linkrev()
attrs = vars(self)
noctx = not ('_changeid' in attrs or '_changectx' in attrs)
if noctx or self.rev() == lkr:
return self.linkrev()
return self._adjustlinkrev(self._path, self._filelog, self._filenode,
self.rev(), inclusive=True)
def _parentfilectx(self, path, fileid, filelog):
"""create parent filectx keeping ancestry info for _adjustlinkrev()"""
fctx = filectx(self._repo, path, fileid=fileid, filelog=filelog)
if '_changeid' in vars(self) or '_changectx' in vars(self):
# If self is associated with a changeset (probably explicitly
# fed), ensure the created filectx is associated with a
# changeset that is an ancestor of self.changectx.
# This lets us later use _adjustlinkrev to get a correct link.
fctx._descendantrev = self.rev()
fctx._ancestrycontext = getattr(self, '_ancestrycontext', None)
elif '_descendantrev' in vars(self):
# Otherwise propagate _descendantrev if we have one associated.
fctx._descendantrev = self._descendantrev
fctx._ancestrycontext = getattr(self, '_ancestrycontext', None)
return fctx
def parents(self):
_path = self._path
fl = self._filelog
parents = self._filelog.parents(self._filenode)
pl = [(_path, node, fl) for node in parents if node != nullid]
r = fl.renamed(self._filenode)
if r:
# - In the simple rename case, both parent are nullid, pl is empty.
# - In case of merge, only one of the parent is null id and should
# be replaced with the rename information. This parent is -always-
# the first one.
#
# As null id have always been filtered out in the previous list
# comprehension, inserting to 0 will always result in "replacing
# first nullid parent with rename information.
pl.insert(0, (r[0], r[1], self._repo.file(r[0])))
return [self._parentfilectx(path, fnode, l) for path, fnode, l in pl]
def p1(self):
return self.parents()[0]
def p2(self):
p = self.parents()
if len(p) == 2:
return p[1]
return filectx(self._repo, self._path, fileid=-1, filelog=self._filelog)
def annotate(self, follow=False, linenumber=None, diffopts=None):
'''returns a list of tuples of (ctx, line) for each line
in the file, where ctx is the filectx of the node where
that line was last changed.
This returns tuples of ((ctx, linenumber), line) for each line,
if "linenumber" parameter is NOT "None".
In such tuples, linenumber means one at the first appearance
in the managed file.
To reduce annotation cost,
this returns fixed value(False is used) as linenumber,
if "linenumber" parameter is "False".'''
if linenumber is None:
def decorate(text, rev):
return ([rev] * len(text.splitlines()), text)
elif linenumber:
def decorate(text, rev):
size = len(text.splitlines())
return ([(rev, i) for i in xrange(1, size + 1)], text)
else:
def decorate(text, rev):
return ([(rev, False)] * len(text.splitlines()), text)
def pair(parent, child):
blocks = mdiff.allblocks(parent[1], child[1], opts=diffopts,
refine=True)
for (a1, a2, b1, b2), t in blocks:
# Changed blocks ('!') or blocks made only of blank lines ('~')
# belong to the child.
if t == '=':
child[0][b1:b2] = parent[0][a1:a2]
return child
getlog = util.lrucachefunc(lambda x: self._repo.file(x))
def parents(f):
# Cut _descendantrev here to mitigate the penalty of lazy linkrev
# adjustment. Otherwise, p._adjustlinkrev() would walk changelog
# from the topmost introrev (= srcrev) down to p.linkrev() if it
# isn't an ancestor of the srcrev.
f._changeid
pl = f.parents()
# Don't return renamed parents if we aren't following.
if not follow:
pl = [p for p in pl if p.path() == f.path()]
# renamed filectx won't have a filelog yet, so set it
# from the cache to save time
for p in pl:
if not '_filelog' in p.__dict__:
p._filelog = getlog(p.path())
return pl
# use linkrev to find the first changeset where self appeared
base = self
introrev = self.introrev()
if self.rev() != introrev:
base = self.filectx(self.filenode(), changeid=introrev)
if getattr(base, '_ancestrycontext', None) is None:
cl = self._repo.changelog
if introrev is None:
# wctx is not inclusive, but works because _ancestrycontext
# is used to test filelog revisions
ac = cl.ancestors([p.rev() for p in base.parents()],
inclusive=True)
else:
ac = cl.ancestors([introrev], inclusive=True)
base._ancestrycontext = ac
# This algorithm would prefer to be recursive, but Python is a
# bit recursion-hostile. Instead we do an iterative
# depth-first search.
visit = [base]
hist = {}
pcache = {}
needed = {base: 1}
while visit:
f = visit[-1]
pcached = f in pcache
if not pcached:
pcache[f] = parents(f)
ready = True
pl = pcache[f]
for p in pl:
if p not in hist:
ready = False
visit.append(p)
if not pcached:
needed[p] = needed.get(p, 0) + 1
if ready:
visit.pop()
reusable = f in hist
if reusable:
curr = hist[f]
else:
curr = decorate(f.data(), f)
for p in pl:
if not reusable:
curr = pair(hist[p], curr)
if needed[p] == 1:
del hist[p]
del needed[p]
else:
needed[p] -= 1
hist[f] = curr
pcache[f] = []
return zip(hist[base][0], hist[base][1].splitlines(True))
def ancestors(self, followfirst=False):
visit = {}
c = self
if followfirst:
cut = 1
else:
cut = None
while True:
for parent in c.parents()[:cut]:
visit[(parent.linkrev(), parent.filenode())] = parent
if not visit:
break
c = visit.pop(max(visit))
yield c
class filectx(basefilectx):
"""A filecontext object makes access to data related to a particular
filerevision convenient."""
def __init__(self, repo, path, changeid=None, fileid=None,
filelog=None, changectx=None):
"""changeid can be a changeset revision, node, or tag.
fileid can be a file revision or node."""
self._repo = repo
self._path = path
assert (changeid is not None
or fileid is not None
or changectx is not None), \
("bad args: changeid=%r, fileid=%r, changectx=%r"
% (changeid, fileid, changectx))
if filelog is not None:
self._filelog = filelog
if changeid is not None:
self._changeid = changeid
if changectx is not None:
self._changectx = changectx
if fileid is not None:
self._fileid = fileid
@propertycache
def _changectx(self):
try:
return changectx(self._repo, self._changeid)
except error.FilteredRepoLookupError:
# Linkrev may point to any revision in the repository. When the
# repository is filtered this may lead to `filectx` trying to build
# `changectx` for filtered revision. In such case we fallback to
# creating `changectx` on the unfiltered version of the reposition.
# This fallback should not be an issue because `changectx` from
# `filectx` are not used in complex operations that care about
# filtering.
#
# This fallback is a cheap and dirty fix that prevent several
# crashes. It does not ensure the behavior is correct. However the
# behavior was not correct before filtering either and "incorrect
# behavior" is seen as better as "crash"
#
# Linkrevs have several serious troubles with filtering that are
# complicated to solve. Proper handling of the issue here should be
# considered when solving linkrev issue are on the table.
return changectx(self._repo.unfiltered(), self._changeid)
def filectx(self, fileid, changeid=None):
'''opens an arbitrary revision of the file without
opening a new filelog'''
return filectx(self._repo, self._path, fileid=fileid,
filelog=self._filelog, changeid=changeid)
def data(self):
try:
return self._filelog.read(self._filenode)
except error.CensoredNodeError:
if self._repo.ui.config("censor", "policy", "abort") == "ignore":
return ""
raise error.Abort(_("censored node: %s") % short(self._filenode),
hint=_("set censor.policy to ignore errors"))
def size(self):
return self._filelog.size(self._filerev)
def renamed(self):
"""check if file was actually renamed in this changeset revision
If rename logged in file revision, we report copy for changeset only
if file revisions linkrev points back to the changeset in question
or both changeset parents contain different file revisions.
"""
renamed = self._filelog.renamed(self._filenode)
if not renamed:
return renamed
if self.rev() == self.linkrev():
return renamed
name = self.path()
fnode = self._filenode
for p in self._changectx.parents():
try:
if fnode == p.filenode(name):
return None
except error.LookupError:
pass
return renamed
def children(self):
# hard for renames
c = self._filelog.children(self._filenode)
return [filectx(self._repo, self._path, fileid=x,
filelog=self._filelog) for x in c]
class committablectx(basectx):
"""A committablectx object provides common functionality for a context that
wants the ability to commit, e.g. workingctx or memctx."""
def __init__(self, repo, text="", user=None, date=None, extra=None,
changes=None):
self._repo = repo
self._rev = None
self._node = None
self._text = text
if date:
self._date = util.parsedate(date)
if user:
self._user = user
if changes:
self._status = changes
self._extra = {}
if extra:
self._extra = extra.copy()
if 'branch' not in self._extra:
try:
branch = encoding.fromlocal(self._repo.dirstate.branch())
except UnicodeDecodeError:
raise error.Abort(_('branch name not in UTF-8!'))
self._extra['branch'] = branch
if self._extra['branch'] == '':
self._extra['branch'] = 'default'
def __str__(self):
return str(self._parents[0]) + "+"
def __nonzero__(self):
return True
def _buildflagfunc(self):
# Create a fallback function for getting file flags when the
# filesystem doesn't support them
copiesget = self._repo.dirstate.copies().get
parents = self.parents()
if len(parents) < 2:
# when we have one parent, it's easy: copy from parent
man = parents[0].manifest()
def func(f):
f = copiesget(f, f)
return man.flags(f)
else:
# merges are tricky: we try to reconstruct the unstored
# result from the merge (issue1802)
p1, p2 = parents
pa = p1.ancestor(p2)
m1, m2, ma = p1.manifest(), p2.manifest(), pa.manifest()
def func(f):
f = copiesget(f, f) # may be wrong for merges with copies
fl1, fl2, fla = m1.flags(f), m2.flags(f), ma.flags(f)
if fl1 == fl2:
return fl1
if fl1 == fla:
return fl2
if fl2 == fla:
return fl1
return '' # punt for conflicts
return func
@propertycache
def _flagfunc(self):
return self._repo.dirstate.flagfunc(self._buildflagfunc)
@propertycache
def _manifest(self):
"""generate a manifest corresponding to the values in self._status
This reuse the file nodeid from parent, but we append an extra letter
when modified. Modified files get an extra 'm' while added files get
an extra 'a'. This is used by manifests merge to see that files
are different and by update logic to avoid deleting newly added files.
"""
parents = self.parents()
man1 = parents[0].manifest()
man = man1.copy()
if len(parents) > 1:
man2 = self.p2().manifest()
def getman(f):
if f in man1:
return man1
return man2
else:
getman = lambda f: man1
copied = self._repo.dirstate.copies()
ff = self._flagfunc
for i, l in (("a", self._status.added), ("m", self._status.modified)):
for f in l:
orig = copied.get(f, f)
man[f] = getman(orig).get(orig, nullid) + i
try:
man.setflag(f, ff(f))
except OSError:
pass
for f in self._status.deleted + self._status.removed:
if f in man:
del man[f]
return man
@propertycache
def _status(self):
return self._repo.status()
@propertycache
def _user(self):
return self._repo.ui.username()
@propertycache
def _date(self):
return util.makedate()
def subrev(self, subpath):
return None
def manifestnode(self):
return None
def user(self):
return self._user or self._repo.ui.username()
def date(self):
return self._date
def description(self):
return self._text
def files(self):
return sorted(self._status.modified + self._status.added +
self._status.removed)
def modified(self):
return self._status.modified
def added(self):
return self._status.added
def removed(self):
return self._status.removed
def deleted(self):
return self._status.deleted
def branch(self):
return encoding.tolocal(self._extra['branch'])
def closesbranch(self):
return 'close' in self._extra
def extra(self):
return self._extra
def tags(self):
return []
def bookmarks(self):
b = []
for p in self.parents():
b.extend(p.bookmarks())
return b
def phase(self):
phase = phases.draft # default phase to draft
for p in self.parents():
phase = max(phase, p.phase())
return phase
def hidden(self):
return False
def children(self):
return []
def flags(self, path):
if '_manifest' in self.__dict__:
try:
return self._manifest.flags(path)
except KeyError:
return ''
try:
return self._flagfunc(path)
except OSError:
return ''
def ancestor(self, c2):
"""return the "best" ancestor context of self and c2"""
return self._parents[0].ancestor(c2) # punt on two parents for now
def walk(self, match):
'''Generates matching file names.'''
return sorted(self._repo.dirstate.walk(match, sorted(self.substate),
True, False))
def matches(self, match):
return sorted(self._repo.dirstate.matches(match))
def ancestors(self):
for p in self._parents:
yield p
for a in self._repo.changelog.ancestors(
[p.rev() for p in self._parents]):
yield changectx(self._repo, a)
def markcommitted(self, node):
"""Perform post-commit cleanup necessary after committing this ctx
Specifically, this updates backing stores this working context
wraps to reflect the fact that the changes reflected by this
workingctx have been committed. For example, it marks
modified and added files as normal in the dirstate.
"""
self._repo.dirstate.beginparentchange()
for f in self.modified() + self.added():
self._repo.dirstate.normal(f)
for f in self.removed():
self._repo.dirstate.drop(f)
self._repo.dirstate.setparents(node)
self._repo.dirstate.endparentchange()
# write changes out explicitly, because nesting wlock at
# runtime may prevent 'wlock.release()' in 'repo.commit()'
# from immediately doing so for subsequent changing files
self._repo.dirstate.write(self._repo.currenttransaction())
class workingctx(committablectx):
"""A workingctx object makes access to data related to
the current working directory convenient.
date - any valid date string or (unixtime, offset), or None.
user - username string, or None.
extra - a dictionary of extra values, or None.
changes - a list of file lists as returned by localrepo.status()
or None to use the repository status.
"""
def __init__(self, repo, text="", user=None, date=None, extra=None,
changes=None):
super(workingctx, self).__init__(repo, text, user, date, extra, changes)
def __iter__(self):
d = self._repo.dirstate
for f in d:
if d[f] != 'r':
yield f
def __contains__(self, key):
return self._repo.dirstate[key] not in "?r"
def hex(self):
return hex(wdirid)
@propertycache
def _parents(self):
p = self._repo.dirstate.parents()
if p[1] == nullid:
p = p[:-1]
return [changectx(self._repo, x) for x in p]
def filectx(self, path, filelog=None):
"""get a file context from the working directory"""
return workingfilectx(self._repo, path, workingctx=self,
filelog=filelog)
def dirty(self, missing=False, merge=True, branch=True):
"check whether a working directory is modified"
# check subrepos first
for s in sorted(self.substate):
if self.sub(s).dirty():
return True
# check current working dir
return ((merge and self.p2()) or
(branch and self.branch() != self.p1().branch()) or
self.modified() or self.added() or self.removed() or
(missing and self.deleted()))
def add(self, list, prefix=""):
join = lambda f: os.path.join(prefix, f)
wlock = self._repo.wlock()
ui, ds = self._repo.ui, self._repo.dirstate
try:
rejected = []
lstat = self._repo.wvfs.lstat
for f in list:
scmutil.checkportable(ui, join(f))
try:
st = lstat(f)
except OSError:
ui.warn(_("%s does not exist!\n") % join(f))
rejected.append(f)
continue
if st.st_size > 10000000:
ui.warn(_("%s: up to %d MB of RAM may be required "
"to manage this file\n"
"(use 'hg revert %s' to cancel the "
"pending addition)\n")
% (f, 3 * st.st_size // 1000000, join(f)))
if not (stat.S_ISREG(st.st_mode) or stat.S_ISLNK(st.st_mode)):
ui.warn(_("%s not added: only files and symlinks "
"supported currently\n") % join(f))
rejected.append(f)
elif ds[f] in 'amn':
ui.warn(_("%s already tracked!\n") % join(f))
elif ds[f] == 'r':
ds.normallookup(f)
else:
ds.add(f)
return rejected
finally:
wlock.release()
def forget(self, files, prefix=""):
join = lambda f: os.path.join(prefix, f)
wlock = self._repo.wlock()
try:
rejected = []
for f in files:
if f not in self._repo.dirstate:
self._repo.ui.warn(_("%s not tracked!\n") % join(f))
rejected.append(f)
elif self._repo.dirstate[f] != 'a':
self._repo.dirstate.remove(f)
else:
self._repo.dirstate.drop(f)
return rejected
finally:
wlock.release()
def undelete(self, list):
pctxs = self.parents()
wlock = self._repo.wlock()
try:
for f in list:
if self._repo.dirstate[f] != 'r':
self._repo.ui.warn(_("%s not removed!\n") % f)
else:
fctx = f in pctxs[0] and pctxs[0][f] or pctxs[1][f]
t = fctx.data()
self._repo.wwrite(f, t, fctx.flags())
self._repo.dirstate.normal(f)
finally:
wlock.release()
def copy(self, source, dest):
try:
st = self._repo.wvfs.lstat(dest)
except OSError as err:
if err.errno != errno.ENOENT:
raise
self._repo.ui.warn(_("%s does not exist!\n") % dest)
return
if not (stat.S_ISREG(st.st_mode) or stat.S_ISLNK(st.st_mode)):
self._repo.ui.warn(_("copy failed: %s is not a file or a "
"symbolic link\n") % dest)
else:
wlock = self._repo.wlock()
try:
if self._repo.dirstate[dest] in '?':
self._repo.dirstate.add(dest)
elif self._repo.dirstate[dest] in 'r':
self._repo.dirstate.normallookup(dest)
self._repo.dirstate.copy(source, dest)
finally:
wlock.release()
def match(self, pats=[], include=None, exclude=None, default='glob',
listsubrepos=False, badfn=None):
r = self._repo
# Only a case insensitive filesystem needs magic to translate user input
# to actual case in the filesystem.
if not util.checkcase(r.root):
return matchmod.icasefsmatcher(r.root, r.getcwd(), pats, include,
exclude, default, r.auditor, self,
listsubrepos=listsubrepos,
badfn=badfn)
return matchmod.match(r.root, r.getcwd(), pats,
include, exclude, default,
auditor=r.auditor, ctx=self,
listsubrepos=listsubrepos, badfn=badfn)
def _filtersuspectsymlink(self, files):
if not files or self._repo.dirstate._checklink:
return files
# Symlink placeholders may get non-symlink-like contents
# via user error or dereferencing by NFS or Samba servers,
# so we filter out any placeholders that don't look like a
# symlink
sane = []
for f in files:
if self.flags(f) == 'l':
d = self[f].data()
if d == '' or len(d) >= 1024 or '\n' in d or util.binary(d):
self._repo.ui.debug('ignoring suspect symlink placeholder'
' "%s"\n' % f)
continue
sane.append(f)
return sane
def _checklookup(self, files):
# check for any possibly clean files
if not files:
return [], []
modified = []
fixup = []
pctx = self._parents[0]
# do a full compare of any files that might have changed
for f in sorted(files):
if (f not in pctx or self.flags(f) != pctx.flags(f)
or pctx[f].cmp(self[f])):
modified.append(f)
else:
fixup.append(f)
# update dirstate for files that are actually clean
if fixup:
try:
# updating the dirstate is optional
# so we don't wait on the lock
# wlock can invalidate the dirstate, so cache normal _after_
# taking the lock
wlock = self._repo.wlock(False)
normal = self._repo.dirstate.normal
try:
for f in fixup:
normal(f)
# write changes out explicitly, because nesting
# wlock at runtime may prevent 'wlock.release()'
# below from doing so for subsequent changing files
self._repo.dirstate.write(self._repo.currenttransaction())
finally:
wlock.release()
except error.LockError:
pass
return modified, fixup
def _manifestmatches(self, match, s):
"""Slow path for workingctx
The fast path is when we compare the working directory to its parent
which means this function is comparing with a non-parent; therefore we
need to build a manifest and return what matches.
"""
mf = self._repo['.']._manifestmatches(match, s)
for f in s.modified + s.added:
mf[f] = _newnode
mf.setflag(f, self.flags(f))
for f in s.removed:
if f in mf:
del mf[f]
return mf
def _dirstatestatus(self, match=None, ignored=False, clean=False,
unknown=False):
'''Gets the status from the dirstate -- internal use only.'''
listignored, listclean, listunknown = ignored, clean, unknown
match = match or matchmod.always(self._repo.root, self._repo.getcwd())
subrepos = []
if '.hgsub' in self:
subrepos = sorted(self.substate)
cmp, s = self._repo.dirstate.status(match, subrepos, listignored,
listclean, listunknown)
# check for any possibly clean files
if cmp:
modified2, fixup = self._checklookup(cmp)
s.modified.extend(modified2)
# update dirstate for files that are actually clean
if fixup and listclean:
s.clean.extend(fixup)
if match.always():
# cache for performance
if s.unknown or s.ignored or s.clean:
# "_status" is cached with list*=False in the normal route
self._status = scmutil.status(s.modified, s.added, s.removed,
s.deleted, [], [], [])
else:
self._status = s
return s
def _buildstatus(self, other, s, match, listignored, listclean,
listunknown):
"""build a status with respect to another context
This includes logic for maintaining the fast path of status when
comparing the working directory against its parent, which is to skip
building a new manifest if self (working directory) is not comparing
against its parent (repo['.']).
"""
s = self._dirstatestatus(match, listignored, listclean, listunknown)
# Filter out symlinks that, in the case of FAT32 and NTFS filesystems,
# might have accidentally ended up with the entire contents of the file
# they are supposed to be linking to.
s.modified[:] = self._filtersuspectsymlink(s.modified)
if other != self._repo['.']:
s = super(workingctx, self)._buildstatus(other, s, match,
listignored, listclean,
listunknown)
return s
def _matchstatus(self, other, match):
"""override the match method with a filter for directory patterns
We use inheritance to customize the match.bad method only in cases of
workingctx since it belongs only to the working directory when
comparing against the parent changeset.
If we aren't comparing against the working directory's parent, then we
just use the default match object sent to us.
"""
superself = super(workingctx, self)
match = superself._matchstatus(other, match)
if other != self._repo['.']:
def bad(f, msg):
# 'f' may be a directory pattern from 'match.files()',
# so 'f not in ctx1' is not enough
if f not in other and not other.hasdir(f):
self._repo.ui.warn('%s: %s\n' %
(self._repo.dirstate.pathto(f), msg))
match.bad = bad
return match
class committablefilectx(basefilectx):
"""A committablefilectx provides common functionality for a file context
that wants the ability to commit, e.g. workingfilectx or memfilectx."""
def __init__(self, repo, path, filelog=None, ctx=None):
self._repo = repo
self._path = path
self._changeid = None
self._filerev = self._filenode = None
if filelog is not None:
self._filelog = filelog
if ctx:
self._changectx = ctx
def __nonzero__(self):
return True
def linkrev(self):
# linked to self._changectx no matter if file is modified or not
return self.rev()
def parents(self):
'''return parent filectxs, following copies if necessary'''
def filenode(ctx, path):
return ctx._manifest.get(path, nullid)
path = self._path
fl = self._filelog
pcl = self._changectx._parents
renamed = self.renamed()
if renamed:
pl = [renamed + (None,)]
else:
pl = [(path, filenode(pcl[0], path), fl)]
for pc in pcl[1:]:
pl.append((path, filenode(pc, path), fl))
return [self._parentfilectx(p, fileid=n, filelog=l)
for p, n, l in pl if n != nullid]
def children(self):
return []
class workingfilectx(committablefilectx):
"""A workingfilectx object makes access to data related to a particular
file in the working directory convenient."""
def __init__(self, repo, path, filelog=None, workingctx=None):
super(workingfilectx, self).__init__(repo, path, filelog, workingctx)
@propertycache
def _changectx(self):
return workingctx(self._repo)
def data(self):
return self._repo.wread(self._path)
def renamed(self):
rp = self._repo.dirstate.copied(self._path)
if not rp:
return None
return rp, self._changectx._parents[0]._manifest.get(rp, nullid)
def size(self):
return self._repo.wvfs.lstat(self._path).st_size
def date(self):
t, tz = self._changectx.date()
try:
return (self._repo.wvfs.lstat(self._path).st_mtime, tz)
except OSError as err:
if err.errno != errno.ENOENT:
raise
return (t, tz)
def cmp(self, fctx):
"""compare with other file context
returns True if different than fctx.
"""
# fctx should be a filectx (not a workingfilectx)
# invert comparison to reuse the same code path
return fctx.cmp(self)
def remove(self, ignoremissing=False):
"""wraps unlink for a repo's working directory"""
util.unlinkpath(self._repo.wjoin(self._path), ignoremissing)
def write(self, data, flags):
"""wraps repo.wwrite"""
self._repo.wwrite(self._path, data, flags)
class workingcommitctx(workingctx):
"""A workingcommitctx object makes access to data related to
the revision being committed convenient.
This hides changes in the working directory, if they aren't
committed in this context.
"""
def __init__(self, repo, changes,
text="", user=None, date=None, extra=None):
super(workingctx, self).__init__(repo, text, user, date, extra,
changes)
def _dirstatestatus(self, match=None, ignored=False, clean=False,
unknown=False):
"""Return matched files only in ``self._status``
Uncommitted files appear "clean" via this context, even if
they aren't actually so in the working directory.
"""
match = match or matchmod.always(self._repo.root, self._repo.getcwd())
if clean:
clean = [f for f in self._manifest if f not in self._changedset]
else:
clean = []
return scmutil.status([f for f in self._status.modified if match(f)],
[f for f in self._status.added if match(f)],
[f for f in self._status.removed if match(f)],
[], [], [], clean)
@propertycache
def _changedset(self):
"""Return the set of files changed in this context
"""
changed = set(self._status.modified)
changed.update(self._status.added)
changed.update(self._status.removed)
return changed
class memctx(committablectx):
"""Use memctx to perform in-memory commits via localrepo.commitctx().
Revision information is supplied at initialization time while
related files data and is made available through a callback
mechanism. 'repo' is the current localrepo, 'parents' is a
sequence of two parent revisions identifiers (pass None for every
missing parent), 'text' is the commit message and 'files' lists
names of files touched by the revision (normalized and relative to
repository root).
filectxfn(repo, memctx, path) is a callable receiving the
repository, the current memctx object and the normalized path of
requested file, relative to repository root. It is fired by the
commit function for every file in 'files', but calls order is
undefined. If the file is available in the revision being
committed (updated or added), filectxfn returns a memfilectx
object. If the file was removed, filectxfn raises an
IOError. Moved files are represented by marking the source file
removed and the new file added with copy information (see
memfilectx).
user receives the committer name and defaults to current
repository username, date is the commit date in any format
supported by util.parsedate() and defaults to current date, extra
is a dictionary of metadata or is left empty.
"""
# Mercurial <= 3.1 expects the filectxfn to raise IOError for missing files.
# Extensions that need to retain compatibility across Mercurial 3.1 can use
# this field to determine what to do in filectxfn.
_returnnoneformissingfiles = True
def __init__(self, repo, parents, text, files, filectxfn, user=None,
date=None, extra=None, editor=False):
super(memctx, self).__init__(repo, text, user, date, extra)
self._rev = None
self._node = None
parents = [(p or nullid) for p in parents]
p1, p2 = parents
self._parents = [changectx(self._repo, p) for p in (p1, p2)]
files = sorted(set(files))
self._files = files
self.substate = {}
# if store is not callable, wrap it in a function
if not callable(filectxfn):
def getfilectx(repo, memctx, path):
fctx = filectxfn[path]
# this is weird but apparently we only keep track of one parent
# (why not only store that instead of a tuple?)
copied = fctx.renamed()
if copied:
copied = copied[0]
return memfilectx(repo, path, fctx.data(),
islink=fctx.islink(), isexec=fctx.isexec(),
copied=copied, memctx=memctx)
self._filectxfn = getfilectx
else:
# "util.cachefunc" reduces invocation of possibly expensive
# "filectxfn" for performance (e.g. converting from another VCS)
self._filectxfn = util.cachefunc(filectxfn)
if extra:
self._extra = extra.copy()
else:
self._extra = {}
if self._extra.get('branch', '') == '':
self._extra['branch'] = 'default'
if editor:
self._text = editor(self._repo, self, [])
self._repo.savecommitmessage(self._text)
def filectx(self, path, filelog=None):
"""get a file context from the working directory
Returns None if file doesn't exist and should be removed."""
return self._filectxfn(self._repo, self, path)
def commit(self):
"""commit context to the repo"""
return self._repo.commitctx(self)
@propertycache
def _manifest(self):
"""generate a manifest based on the return values of filectxfn"""
# keep this simple for now; just worry about p1
pctx = self._parents[0]
man = pctx.manifest().copy()
for f in self._status.modified:
p1node = nullid
p2node = nullid
p = pctx[f].parents() # if file isn't in pctx, check p2?
if len(p) > 0:
p1node = p[0].node()
if len(p) > 1:
p2node = p[1].node()
man[f] = revlog.hash(self[f].data(), p1node, p2node)
for f in self._status.added:
man[f] = revlog.hash(self[f].data(), nullid, nullid)
for f in self._status.removed:
if f in man:
del man[f]
return man
@propertycache
def _status(self):
"""Calculate exact status from ``files`` specified at construction
"""
man1 = self.p1().manifest()
p2 = self._parents[1]
# "1 < len(self._parents)" can't be used for checking
# existence of the 2nd parent, because "memctx._parents" is
# explicitly initialized by the list, of which length is 2.
if p2.node() != nullid:
man2 = p2.manifest()
managing = lambda f: f in man1 or f in man2
else:
managing = lambda f: f in man1
modified, added, removed = [], [], []
for f in self._files:
if not managing(f):
added.append(f)
elif self[f]:
modified.append(f)
else:
removed.append(f)
return scmutil.status(modified, added, removed, [], [], [], [])
class memfilectx(committablefilectx):
"""memfilectx represents an in-memory file to commit.
See memctx and committablefilectx for more details.
"""
def __init__(self, repo, path, data, islink=False,
isexec=False, copied=None, memctx=None):
"""
path is the normalized file path relative to repository root.
data is the file content as a string.
islink is True if the file is a symbolic link.
isexec is True if the file is executable.
copied is the source file path if current file was copied in the
revision being committed, or None."""
super(memfilectx, self).__init__(repo, path, None, memctx)
self._data = data
self._flags = (islink and 'l' or '') + (isexec and 'x' or '')
self._copied = None
if copied:
self._copied = (copied, nullid)
def data(self):
return self._data
def size(self):
return len(self.data())
def flags(self):
return self._flags
def renamed(self):
return self._copied
def remove(self, ignoremissing=False):
"""wraps unlink for a repo's working directory"""
# need to figure out what to do here
del self._changectx[self._path]
def write(self, data, flags):
"""wraps repo.wwrite"""
self._data = data