comparison hgext/largefiles/overrides.py @ 43076:2372284d9457

formatting: blacken the codebase

This is using my patch to black
(https://github.com/psf/black/pull/826) so we don't un-wrap collection
literals.

Done with:

  hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S

# skip-blame mass-reformatting only

# no-check-commit reformats foo_bar functions

Differential Revision: https://phab.mercurial-scm.org/D6971

43075:57875cf423c9

import copy
import os

from mercurial.i18n import _

from mercurial.hgweb import (
    webcommands,
)

from mercurial import (
    archival,
    cmdutil,
    copies as copiesmod,

eh = exthelper.exthelper()

# -- Utility functions: commonly/repeatedly needed functionality ---------------

def composelargefilematcher(match, manifest):
    '''create a matcher that matches only the largefiles in the original
    matcher'''
    m = copy.copy(match)
    lfile = lambda f: lfutil.standin(f) in manifest

    m.always = lambda: False
    origmatchfn = m.matchfn
    m.matchfn = lambda f: lfile(f) and origmatchfn(f)
    return m

def composenormalfilematcher(match, manifest, exclude=None):
    excluded = set()
    if exclude is not None:
        excluded.update(exclude)

    m = copy.copy(match)
    notlfile = lambda f: not (lfutil.isstandin(f) or lfutil.standin(f) in
            manifest or f in excluded)
    m._files = [lf for lf in m._files if notlfile(lf)]
    m._fileset = set(m._files)
    m.always = lambda: False
    origmatchfn = m.matchfn
    m.matchfn = lambda f: notlfile(f) and origmatchfn(f)
    return m

def addlargefiles(ui, repo, isaddremove, matcher, uipathfn, **opts):
    large = opts.get(r'large')
    lfsize = lfutil.getminsize(
        ui, lfutil.islfilesrepo(repo), opts.get(r'lfsize'))

    lfmatcher = None
    if lfutil.islfilesrepo(repo):
        lfpats = ui.configlist(lfutil.longname, 'patterns')
        if lfpats:

            # In case the file was removed previously, but not committed
            # (issue3507)
            if not repo.wvfs.exists(f):
                continue

            abovemin = (lfsize and
                        repo.wvfs.lstat(f).st_size >= lfsize * 1024 * 1024)
            if large or abovemin or (lfmatcher and lfmatcher(f)):
                lfnames.append(f)
                if ui.verbose or not exact:
                    ui.status(_('adding %s as a largefile\n') % uipathfn(f))

        if not opts.get(r'dry_run'):
            standins = []
            lfdirstate = lfutil.openlfdirstate(ui, repo)
            for f in lfnames:
                standinname = lfutil.standin(f)
                lfutil.writestandin(repo, standinname, hash='',
                    executable=lfutil.getexecutable(repo.wjoin(f)))
                standins.append(standinname)
                if lfdirstate[f] == 'r':
                    lfdirstate.normallookup(f)
                else:
                    lfdirstate.add(f)
            lfdirstate.write()
            bad += [lfutil.splitstandin(f)
                    for f in repo[None].add(standins)
                    if f in m.files()]

        added = [f for f in lfnames if f not in bad]
    return added, bad

def removelargefiles(ui, repo, isaddremove, matcher, uipathfn, dryrun, **opts):
    after = opts.get(r'after')
    m = composelargefilematcher(matcher, repo[None].manifest())
    try:
        repo.lfstatus = True
        s = repo.status(match=m, clean=not isaddremove)
    finally:
        repo.lfstatus = False
    manifest = repo[None].manifest()
    modified, added, deleted, clean = [[f for f in list
                                        if lfutil.standin(f) in manifest]
                                       for list in (s.modified, s.added,
                                                    s.deleted, s.clean)]

    def warn(files, msg):
        for f in files:
            ui.warn(msg % uipathfn(f))
        return int(len(files) > 0)

    if after:
        remove = deleted
        result = warn(modified + added + clean,
                      _('not removing %s: file still exists\n'))
    else:
        remove = deleted + clean
        result = warn(modified, _('not removing %s: file is modified (use -f'
                                  ' to force removal)\n'))
        result = warn(added, _('not removing %s: file has been marked for add'
                               ' (use forget to undo)\n')) or result

    # Need to lock because standin files are deleted then removed from the
    # repository and we could race in-between.
    with repo.wlock():
        lfdirstate = lfutil.openlfdirstate(ui, repo)

            for f in remove:
                repo.wvfs.unlinkpath(f, ignoremissing=True)
        repo[None].forget(remove)

        for f in remove:
            lfutil.synclfdirstate(repo, lfdirstate, lfutil.splitstandin(f),
                                  False)

        lfdirstate.write()

    return result

# For overriding mercurial.hgweb.webcommands so that largefiles will
# appear at their right place in the manifests.
@eh.wrapfunction(webcommands, 'decodepath')
def decodepath(orig, path):
    return lfutil.splitstandin(path) or path

# -- Wrappers: modify existing commands --------------------------------

@eh.wrapcommand('add',
    opts=[('', 'large', None, _('add as largefile')),
          ('', 'normal', None, _('add as normal file')),
          ('', 'lfsize', '', _('add all files above this size (in megabytes) '
                               'as largefiles (default: 10)'))])
def overrideadd(orig, ui, repo, *pats, **opts):
    if opts.get(r'normal') and opts.get(r'large'):
        raise error.Abort(_('--normal cannot be used with --large'))
    return orig(ui, repo, *pats, **opts)

@eh.wrapfunction(cmdutil, 'add')
def cmdutiladd(orig, ui, repo, matcher, prefix, uipathfn, explicitonly, **opts):
    # The --normal flag short circuits this override
    if opts.get(r'normal'):
        return orig(ui, repo, matcher, prefix, uipathfn, explicitonly, **opts)

    ladded, lbad = addlargefiles(ui, repo, False, matcher, uipathfn, **opts)
    normalmatcher = composenormalfilematcher(matcher, repo[None].manifest(),
                                             ladded)
    bad = orig(ui, repo, normalmatcher, prefix, uipathfn, explicitonly, **opts)

    bad.extend(f for f in lbad)
    return bad

@eh.wrapfunction(cmdutil, 'remove')
def cmdutilremove(orig, ui, repo, matcher, prefix, uipathfn, after, force,
                  subrepos, dryrun):
    normalmatcher = composenormalfilematcher(matcher, repo[None].manifest())
    result = orig(ui, repo, normalmatcher, prefix, uipathfn, after, force,
                  subrepos, dryrun)
    return removelargefiles(ui, repo, False, matcher, uipathfn, dryrun,
                            after=after, force=force) or result

@eh.wrapfunction(subrepo.hgsubrepo, 'status')
def overridestatusfn(orig, repo, rev2, **opts):
    try:
        repo._repo.lfstatus = True
        return orig(repo, rev2, **opts)
    finally:
        repo._repo.lfstatus = False

@eh.wrapcommand('status')
def overridestatus(orig, ui, repo, *pats, **opts):
    try:
        repo.lfstatus = True
        return orig(ui, repo, *pats, **opts)
    finally:
        repo.lfstatus = False

@eh.wrapfunction(subrepo.hgsubrepo, 'dirty')
def overridedirty(orig, repo, ignoreupdate=False, missing=False):
    try:
        repo._repo.lfstatus = True
        return orig(repo, ignoreupdate=ignoreupdate, missing=missing)
    finally:
        repo._repo.lfstatus = False

@eh.wrapcommand('log')
def overridelog(orig, ui, repo, *pats, **opts):
    def overridematchandpats(orig, ctx, pats=(), opts=None, globbed=False,
            default='relpath', badfn=None):
        """Matcher that merges root directory with .hglf, suitable for log.
        It is still possible to match .hglf directly.
        For any listed files run log on the standin too.
        matchfn tries both the given filename and with .hglf stripped.
        """

            return tostandin(kindpat[1])

        cwd = repo.getcwd()
        if cwd:
            hglf = lfutil.shortname
            back = util.pconvert(repo.pathto(hglf)[:-len(hglf)])

            def tostandin(f):
                # The file may already be a standin, so truncate the back
                # prefix and test before mangling it.  This avoids turning
                # 'glob:../.hglf/foo*' into 'glob:../.hglf/../.hglf/foo*'.
                if f.startswith(back) and lfutil.splitstandin(f[len(back):]):
                    return f

                # An absolute path is from outside the repo, so truncate the
                # path to the root before building the standin.  Otherwise cwd
                # is somewhere in the repo, relative to root, and needs to be
                # prepended before building the standin.
                if os.path.isabs(cwd):
                    f = f[len(back):]
                else:
                    f = cwd + '/' + f
                return back + lfutil.standin(f)
        else:
            def tostandin(f):
                if lfutil.isstandin(f):
                    return f
                return lfutil.standin(f)
        pats.update(fixpats(f, tostandin) for f in p)

        for i in range(0, len(m._files)):
            # Don't add '.hglf' to m.files, since that is already covered by '.'
            if m._files[i] == '.':

                m._files.append(standin)

        m._fileset = set(m._files)
        m.always = lambda: False
        origmatchfn = m.matchfn
        def lfmatchfn(f):
            lf = lfutil.splitstandin(f)
            if lf is not None and origmatchfn(lf):
                return True
            r = origmatchfn(f)
            return r
        m.matchfn = lfmatchfn

        ui.debug('updated patterns: %s\n' % ', '.join(sorted(pats)))
        return m, pats

    # (1) to determine what revisions should be printed out, and
    # (2) to determine what files to print out diffs for.
    # The magic matchandpats override should be used for case (1) but not for
    # case (2).
    oldmatchandpats = scmutil.matchandpats
    def overridemakefilematcher(orig, repo, pats, opts, badfn=None):
        wctx = repo[None]
        match, pats = oldmatchandpats(wctx, pats, opts, badfn=badfn)
        return lambda ctx: match

    wrappedmatchandpats = extensions.wrappedfunction(scmutil, 'matchandpats',
                                                     overridematchandpats)
    wrappedmakefilematcher = extensions.wrappedfunction(
        logcmdutil, '_makenofollowfilematcher', overridemakefilematcher)
    with wrappedmatchandpats, wrappedmakefilematcher:
        return orig(ui, repo, *pats, **opts)

@eh.wrapcommand('verify',
    opts=[('', 'large', None,
                _('verify that all largefiles in current revision exists')),
          ('', 'lfa', None,
                _('verify largefiles in all revisions, not just current')),
          ('', 'lfc', None,
                _('verify local largefile contents, not just existence'))])
def overrideverify(orig, ui, repo, *pats, **opts):
    large = opts.pop(r'large', False)
    all = opts.pop(r'lfa', False)
    contents = opts.pop(r'lfc', False)

    result = orig(ui, repo, *pats, **opts)
    if large or all or contents:
        result = result or lfcommands.verifylfiles(ui, repo, all, contents)
    return result

@eh.wrapcommand('debugstate',
    opts=[('', 'large', None, _('display largefiles dirstate'))])
def overridedebugstate(orig, ui, repo, *pats, **opts):
    large = opts.pop(r'large', False)
    if large:
        class fakerepo(object):
            dirstate = lfutil.openlfdirstate(ui, repo)
        orig(ui, fakerepo, *pats, **opts)
    else:
        orig(ui, repo, *pats, **opts)

# Before starting the manifest merge, merge.updates will call
# _checkunknownfile to check if there are any files in the merged-in
# changeset that collide with unknown files in the working copy.
#

@eh.wrapfunction(merge, '_checkunknownfile')
def overridecheckunknownfile(origfn, repo, wctx, mctx, f, f2=None):
    if lfutil.standin(repo.dirstate.normalize(f)) in wctx:
        return False
    return origfn(repo, wctx, mctx, f, f2)

# The manifest merge handles conflicts on the manifest level. We want
# to handle changes in largefile-ness of files at this level too.
#
# The strategy is to run the original calculateupdates and then process

#
# Finally, the merge.applyupdates function will then take care of
# writing the files into the working copy and lfcommands.updatelfiles
# will update the largefiles.
@eh.wrapfunction(merge, 'calculateupdates')
def overridecalculateupdates(origfn, repo, p1, p2, pas, branchmerge, force,
                             acceptremote, *args, **kwargs):
    overwrite = force and not branchmerge
    actions, diverge, renamedelete = origfn(
        repo, p1, p2, pas, branchmerge, force, acceptremote, *args, **kwargs)

    if overwrite:
        return actions, diverge, renamedelete

    # Convert to dictionary with filename as key and action as value.

            if sm == 'dc':
                f1, f2, fa, move, anc = sargs
                sargs = (p2[f2].flags(), False)
            # Case 1: normal file in the working copy, largefile in
            # the second parent
            usermsg = _('remote turned local normal file %s into a largefile\n'
                        'use (l)argefile or keep (n)ormal file?'
                        '$$ &Largefile $$ &Normal file') % lfile
            if repo.ui.promptchoice(usermsg, 0) == 0: # pick remote largefile
                actions[lfile] = ('r', None, 'replaced by standin')
                actions[standin] = ('g', sargs, 'replaces standin')
            else: # keep local normal file
                actions[lfile] = ('k', None, 'replaces standin')
                if branchmerge:
                    actions[standin] = ('k', None, 'replaced by non-standin')
                else:
                    actions[standin] = ('r', None, 'replaced by non-standin')

            if lm == 'dc':
                f1, f2, fa, move, anc = largs
                largs = (p2[f2].flags(), False)
            # Case 2: largefile in the working copy, normal file in
            # the second parent
            usermsg = _('remote turned local largefile %s into a normal file\n'
                    'keep (l)argefile or use (n)ormal file?'
                    '$$ &Largefile $$ &Normal file') % lfile
            if repo.ui.promptchoice(usermsg, 0) == 0: # keep local largefile
                if branchmerge:
                    # largefile can be restored from standin safely
                    actions[lfile] = ('k', None, 'replaced by standin')
                    actions[standin] = ('k', None, 'replaces standin')
                else:
                    # "lfile" should be marked as "removed" without
                    # removal of itself
                    actions[lfile] = ('lfmr', None,
                                      'forget non-standin largefile')

                    # linear-merge should treat this largefile as 're-added'
                    actions[standin] = ('a', None, 'keep standin')
            else: # pick remote normal file
                actions[lfile] = ('g', largs, 'replaces standin')
                actions[standin] = ('r', None, 'replaced by non-standin')

    return actions, diverge, renamedelete

@eh.wrapfunction(merge, 'recordupdates')
def mergerecordupdates(orig, repo, actions, branchmerge, getfiledata):
    if 'lfmr' in actions:
        lfdirstate = lfutil.openlfdirstate(repo.ui, repo)

            lfdirstate.add(lfile)
        lfdirstate.write()

    return orig(repo, actions, branchmerge, getfiledata)

# Override filemerge to prompt the user about how they wish to merge
# largefiles. This will handle identical edits without prompting the user.
@eh.wrapfunction(filemerge, '_filemerge')
def overridefilemerge(origfn, premerge, repo, wctx, mynode, orig, fcd, fco, fca,
                      labels=None):
    if not lfutil.isstandin(orig) or fcd.isabsent() or fco.isabsent():
        return origfn(premerge, repo, wctx, mynode, orig, fcd, fco, fca,
                      labels=labels)

    ahash = lfutil.readasstandin(fca).lower()
    dhash = lfutil.readasstandin(fcd).lower()
    ohash = lfutil.readasstandin(fco).lower()
    if (ohash != ahash and
        ohash != dhash and
        (dhash == ahash or
         repo.ui.promptchoice(
             _('largefile %s has a merge conflict\nancestor was %s\n'
               'you can keep (l)ocal %s or take (o)ther %s.\n'
               'what do you want to do?'
               '$$ &Local $$ &Other') %
               (lfutil.splitstandin(orig), ahash, dhash, ohash),
             0) == 1)):
        repo.wwrite(fcd.path(), fco.data(), fco.flags())
    return True, 0, False

@eh.wrapfunction(copiesmod, 'pathcopies')
def copiespathcopies(orig, ctx1, ctx2, match=None):
    copies = orig(ctx1, ctx2, match=match)
    updated = {}

    for k, v in copies.iteritems():
        updated[lfutil.splitstandin(k) or k] = lfutil.splitstandin(v) or v

    return updated

# Copy first changes the matchers to match standins instead of
# largefiles.  Then it overrides util.copyfile in that function it
# checks if the destination largefile already exists. It also keeps a
# list of copied files so that the largefiles can be copied and the

    # only match normal files and run it, then replace it to just
    # match largefiles and run it again.
    nonormalfiles = False
    nolfiles = False
    manifest = repo[None].manifest()
    def normalfilesmatchfn(orig, ctx, pats=(), opts=None, globbed=False,
        default='relpath', badfn=None):
        if opts is None:
            opts = {}
        match = orig(ctx, pats, opts, globbed, default, badfn=badfn)
        return composenormalfilematcher(match, manifest)
    with extensions.wrappedfunction(scmutil, 'match', normalfilesmatchfn):
        try:
            result = orig(ui, repo, pats, opts, rename)
        except error.Abort as e:
            if pycompat.bytestr(e) != _('no files to copy'):

        # When we call orig below it creates the standins but we don't add
        # them to the dir state until later so lock during that time.
        wlock = repo.wlock()

        manifest = repo[None].manifest()
        def overridematch(orig, ctx, pats=(), opts=None, globbed=False,
                default='relpath', badfn=None):
            if opts is None:
                opts = {}
            newpats = []
            # The patterns were previously mangled to add the standin
            # directory; we need to remove that now

            m = copy.copy(match)
            lfile = lambda f: lfutil.standin(f) in manifest
            m._files = [lfutil.standin(f) for f in m._files if lfile(f)]
            m._fileset = set(m._files)
            origmatchfn = m.matchfn
            def matchfn(f):
                lfile = lfutil.splitstandin(f)
                return (lfile is not None and
                        (f in manifest) and
                        origmatchfn(lfile) or
                        None)
            m.matchfn = matchfn
            return m
        listpats = []
        for pat in pats:
            if matchmod.patkind(pat) is not None:
                listpats.append(pat)
            else:
                listpats.append(makestandin(pat))

        copiedfiles = []
        def overridecopyfile(orig, src, dest, *args, **kwargs):
            if (lfutil.shortname in src and
                dest.startswith(repo.wjoin(lfutil.shortname))):
                destlfile = dest.replace(lfutil.shortname, '')
                if not opts['force'] and os.path.exists(destlfile):
                    raise IOError('',
                                  _('destination largefile already exists'))
            copiedfiles.append((src, dest))
            orig(src, dest, *args, **kwargs)
        with extensions.wrappedfunction(util, 'copyfile', overridecopyfile):
            with extensions.wrappedfunction(scmutil, 'match', overridematch):
                result += orig(ui, repo, listpats, opts, rename)

        lfdirstate = lfutil.openlfdirstate(ui, repo)
        for (src, dest) in copiedfiles:
            if (lfutil.shortname in src and
                dest.startswith(repo.wjoin(lfutil.shortname))):
                srclfile = src.replace(repo.wjoin(lfutil.standin('')), '')
                destlfile = dest.replace(repo.wjoin(lfutil.standin('')), '')
                destlfiledir = repo.wvfs.dirname(repo.wjoin(destlfile)) or '.'
                if not os.path.isdir(destlfiledir):
                    os.makedirs(destlfiledir)

                    # The file is gone, but this deletes any empty parent
                    # directories as a side-effect.
                    repo.wvfs.unlinkpath(srclfile, ignoremissing=True)
                    lfdirstate.remove(srclfile)
                else:
                    util.copyfile(repo.wjoin(srclfile),
                                  repo.wjoin(destlfile))

                lfdirstate.add(destlfile)
        lfdirstate.write()
    except error.Abort as e:
        if pycompat.bytestr(e) != _('no files to copy'):

    if nolfiles and nonormalfiles:
        raise error.Abort(_('no files to copy'))

    return result

# When the user calls revert, we have to be careful to not revert any
# changes to other largefiles accidentally. This means we have to keep
# track of the largefiles that are being reverted so we only pull down
# the necessary largefiles.

        lfdirstate.write()
        for lfile in s.modified:
            lfutil.updatestandin(repo, lfile, lfutil.standin(lfile))
        for lfile in s.deleted:
            fstandin = lfutil.standin(lfile)
            if (repo.wvfs.exists(fstandin)):
                repo.wvfs.unlink(fstandin)

        oldstandins = lfutil.getstandinsstate(repo)

        def overridematch(orig, mctx, pats=(), opts=None, globbed=False,
                default='relpath', badfn=None):
            if opts is None:
                opts = {}
            match = orig(mctx, pats, opts, globbed, default, badfn=badfn)
            m = copy.copy(match)

            # revert supports recursing into subrepos, and though largefiles
            # currently doesn't work correctly in that case, this match is
            # called, so the lfdirstate above may not be the correct one for
            # this invocation of match.
            lfdirstate = lfutil.openlfdirstate(mctx.repo().ui, mctx.repo(),
                                               False)

            wctx = repo[None]
            matchfiles = []
            for f in m._files:
                standin = lfutil.standin(f)

                else:
                    matchfiles.append(f)
            m._files = matchfiles
            m._fileset = set(m._files)
            origmatchfn = m.matchfn
            def matchfn(f):
                lfile = lfutil.splitstandin(f)
                if lfile is not None:
                    return (origmatchfn(lfile) and
                            (f in ctx or f in mctx))
                return origmatchfn(f)
            m.matchfn = matchfn
            return m
        with extensions.wrappedfunction(scmutil, 'match', overridematch):
            orig(ui, repo, ctx, parents, *pats, **opts)

        newstandins = lfutil.getstandinsstate(repo)
        filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
        # lfdirstate should be 'normallookup'-ed for updated files,
        # because reverting doesn't touch dirstate for 'normal' files
        # when target revision is explicitly specified: in such case,
        # 'n' and valid timestamp in dirstate doesn't ensure 'clean'
        # of target (standin) file.
        lfcommands.updatelfiles(ui, repo, filelist, printmessage=False,
                                normallookup=True)

# after pulling changesets, we need to take some extra care to get
# largefiles updated remotely
@eh.wrapcommand('pull',
    opts=[('', 'all-largefiles', None,
                _('download all pulled versions of largefiles (DEPRECATED)')),
          ('', 'lfrev', [],
                _('download largefiles for these revisions'), _('REV'))])
def overridepull(orig, ui, repo, source=None, **opts):
    revsprepull = len(repo)
    if not source:
        source = 'default'
    repo.lfpullsource = source

    lfrevs = opts.get(r'lfrev', [])
    if opts.get(r'all_largefiles'):
        lfrevs.append('pulled()')
    if lfrevs and revspostpull > revsprepull:
        numcached = 0
        repo.firstpulled = revsprepull # for pulled() revset expression
        try:
            for rev in scmutil.revrange(repo, lfrevs):
                ui.note(_('pulling largefiles for revision %d\n') % rev)
                (cached, missing) = lfcommands.cachelfiles(ui, repo, rev)
                numcached += len(cached)
        finally:
            del repo.firstpulled
        ui.status(_("%d largefiles cached\n") % numcached)
    return result

@eh.wrapcommand('push',
    opts=[('', 'lfrev', [],
               _('upload largefiles for these revisions'), _('REV'))])
def overridepush(orig, ui, repo, *args, **kwargs):
    """Override push command and store --lfrev parameters in opargs"""
    lfrevs = kwargs.pop(r'lfrev', None)
    if lfrevs:
        opargs = kwargs.setdefault(r'opargs', {})
        opargs['lfrevs'] = scmutil.revrange(repo, lfrevs)
    return orig(ui, repo, *args, **kwargs)

@eh.wrapfunction(exchange, 'pushoperation')
def exchangepushoperation(orig, *args, **kwargs):
    """Override pushoperation constructor and store lfrevs parameter"""
    lfrevs = kwargs.pop(r'lfrevs', None)
    pushop = orig(*args, **kwargs)
    pushop.lfrevs = lfrevs
    return pushop

@eh.revsetpredicate('pulled()')
def pulledrevsetsymbol(repo, subset, x):
    """Changesets that just has been pulled.

    Only available with largefiles from pull --lfrev expressions.

        firstpulled = repo.firstpulled
    except AttributeError:
        raise error.Abort(_("pulled() only available in --lfrev"))
    return smartset.baseset([r for r in subset if r >= firstpulled])

@eh.wrapcommand('clone',
    opts=[('', 'all-largefiles', None,
               _('download all versions of all largefiles'))])
def overrideclone(orig, ui, source, dest=None, **opts):
    d = dest
    if d is None:
        d = hg.defaultdest(source)
    if opts.get(r'all_largefiles') and not hg.islocal(d):
            raise error.Abort(_(
            '--all-largefiles is incompatible with non-local destination %s') %
            d)

    return orig(ui, source, dest, **opts)

@eh.wrapfunction(hg, 'clone')
def hgclone(orig, ui, opts, *args, **kwargs):
    result = orig(ui, opts, *args, **kwargs)

            if missing != 0:
                return None

    return result

@eh.wrapcommand('rebase', extension='rebase')
def overriderebase(orig, ui, repo, **opts):
    if not util.safehasattr(repo, '_largefilesenabled'):
        return orig(ui, repo, **opts)

        return orig(ui, repo, **opts)
    finally:
        repo._lfstatuswriters.pop()
        repo._lfcommithooks.pop()

@eh.wrapcommand('archive')
def overridearchivecmd(orig, ui, repo, dest, **opts):
    repo.unfiltered().lfstatus = True

    try:
        return orig(ui, repo.unfiltered(), dest, **opts)
    finally:
        repo.unfiltered().lfstatus = False

@eh.wrapfunction(webcommands, 'archive')
def hgwebarchive(orig, web):
    web.repo.lfstatus = True

    try:
        return orig(web)
    finally:
        web.repo.lfstatus = False

@eh.wrapfunction(archival, 'archive')
def overridearchive(orig, repo, dest, node, kind, decode=True, match=None,
            prefix='', mtime=None, subrepos=None):
    # For some reason setting repo.lfstatus in hgwebarchive only changes the
    # unfiltered repo's attr, so check that as well.
    if not repo.lfstatus and not repo.unfiltered().lfstatus:
        return orig(repo, dest, node, kind, decode, match, prefix, mtime,
                    subrepos)

    # No need to lock because we are only reading history and
    # largefile caches, neither of which are modified.
    if node is not None:
        lfcommands.cachelfiles(repo.ui, repo, node)

    ctx = repo[node]

    if kind == 'files':
        if prefix:
            raise error.Abort(
                _('cannot give prefix when archiving to files'))
    else:
        prefix = archival.tidyprefix(dest, kind, prefix)

    def write(name, mode, islink, getdata):
        if match and not match(name):

        archiver.addfile(prefix + name, mode, islink, data)

    archiver = archival.archivers[kind](dest, mtime or ctx.date()[0])

    if repo.ui.configbool("ui", "archivemeta"):
        write('.hg_archival.txt', 0o644, False,
              lambda: archival.buildmetadata(ctx))

    for f in ctx:
        ff = ctx.flags(f)
        getdata = ctx[f].data
        lfile = lfutil.splitstandin(f)

            if node is not None:
                path = lfutil.findfile(repo, getdata().strip())

                if path is None:
                    raise error.Abort(
                       _('largefile %s not found in repo store or system cache')
                       % lfile)
            else:
                path = lfile

            f = lfile

            subprefix = prefix + subpath + '/'
            sub._repo.lfstatus = True
            sub.archive(archiver, subprefix, submatch)

    archiver.done()

@eh.wrapfunction(subrepo.hgsubrepo, 'archive')
def hgsubrepoarchive(orig, repo, archiver, prefix, match=None, decode=True):
    lfenabled = util.safehasattr(repo._repo, '_largefilesenabled')
    if not lfenabled or not repo._repo.lfstatus:

            if ctx.node() is not None:
                path = lfutil.findfile(repo._repo, getdata().strip())

                if path is None:
                    raise error.Abort(
                       _('largefile %s not found in repo store or system cache')
                       % lfile)
            else:
                path = lfile

            f = lfile

        sub = ctx.workingsub(subpath)
        submatch = matchmod.subdirmatcher(subpath, match)
        subprefix = prefix + subpath + '/'
        sub._repo.lfstatus = True
        sub.archive(archiver, subprefix, submatch, decode)

# If a largefile is modified, the change is not reflected in its
# standin until a commit. cmdutil.bailifchanged() raises an exception
# if the repo has uncommitted changes. Wrap it to also check if
# largefiles were changed. This is used by bisect, backout and fetch.

    s = repo.status()
    repo.lfstatus = False
    if s.modified or s.added or s.removed or s.deleted:
        raise error.Abort(_('uncommitted changes'))

@eh.wrapfunction(cmdutil, 'postcommitstatus')
def postcommitstatus(orig, repo, *args, **kwargs):
    repo.lfstatus = True
    try:
        return orig(repo, *args, **kwargs)
    finally:
        repo.lfstatus = False

@eh.wrapfunction(cmdutil, 'forget')
def cmdutilforget(orig, ui, repo, match, prefix, uipathfn, explicitonly, dryrun,
                  interactive):
    normalmatcher = composenormalfilematcher(match, repo[None].manifest())
    bad, forgot = orig(ui, repo, normalmatcher, prefix, uipathfn, explicitonly,
                       dryrun, interactive)
    m = composelargefilematcher(match, repo[None].manifest())

    try:
        repo.lfstatus = True
        s = repo.status(match=m, clean=True)

    forget = [f for f in forget if lfutil.standin(f) in manifest]

    for f in forget:
        fstandin = lfutil.standin(f)
        if fstandin not in repo.dirstate and not repo.wvfs.isdir(fstandin):
            ui.warn(_('not removing %s: file is already untracked\n')
                    % uipathfn(f))
            bad.append(f)

    for f in forget:
        if ui.verbose or not m.exact(f):
            ui.status(_('removing %s\n') % uipathfn(f))

    bad.extend(f for f in rejected if f in m.files())
    forgot.extend(f for f in forget if f not in rejected)
    return bad, forgot

def _getoutgoings(repo, other, missing, addfunc):
    """get pairs of filename and largefile hash in outgoing revisions
    in 'missing'.

    largefiles already existing on 'other' repository are ignored.

    'addfunc' is invoked with each unique pairs of filename and
    largefile hash value.
    """
    knowns = set()
    lfhashes = set()
    def dedup(fn, lfhash):
        k = (fn, lfhash)
        if k not in knowns:
            knowns.add(k)
            lfhashes.add(lfhash)
    lfutil.getlfilestoupload(repo, missing, dedup)
    if lfhashes:
        lfexists = storefactory.openstore(repo, other).exists(lfhashes)
        for fn, lfhash in knowns:
            if not lfexists[lfhash]: # lfhash doesn't exist on "other"
                addfunc(fn, lfhash)

def outgoinghook(ui, repo, other, opts, missing):
    if opts.pop('large', None):
        lfhashes = set()
        if ui.debugflag:
            toupload = {}
            def addfunc(fn, lfhash):
                if fn not in toupload:
                    toupload[fn] = []
                toupload[fn].append(lfhash)
                lfhashes.add(lfhash)
            def showhashes(fn):
                for lfhash in sorted(toupload[fn]):
                    ui.debug('    %s\n' % (lfhash))
        else:
            toupload = set()
            def addfunc(fn, lfhash):
                toupload.add(fn)
                lfhashes.add(lfhash)
            def showhashes(fn):
                pass
        _getoutgoings(repo, other, missing, addfunc)

        if not toupload:
            ui.status(_('largefiles: no files to upload\n'))
        else:
            ui.status(_('largefiles to upload (%d entities):\n')
                      % (len(lfhashes)))
            for file in sorted(toupload):
                ui.status(lfutil.splitstandin(file) + '\n')
                showhashes(file)
            ui.status('\n')

@eh.wrapcommand('outgoing',
    opts=[('', 'large', None, _('display outgoing largefiles'))])
def _outgoingcmd(orig, *args, **kwargs):
    # Nothing to do here other than add the extra help option- the hook above
    # processes it.
    return orig(*args, **kwargs)

def summaryremotehook(ui, repo, opts, changes):
    largeopt = opts.get('large', False)
    if changes is None:
        if largeopt:
            return (False, True) # only outgoing check is needed
        else:
            return (False, False)
    elif largeopt:
        url, branch, peer, outgoing = changes[1]
        if peer is None:

            ui.status(_('largefiles: (no remote repo)\n'))
            return

        toupload = set()
        lfhashes = set()
        def addfunc(fn, lfhash):
            toupload.add(fn)
            lfhashes.add(lfhash)
        _getoutgoings(repo, peer, outgoing.missing, addfunc)

        if not toupload:
            # i18n: column positioning for "hg summary"
            ui.status(_('largefiles: (no files to upload)\n'))
        else:
            # i18n: column positioning for "hg summary"
            ui.status(_('largefiles: %d entities for %d files to upload\n')
                      % (len(lfhashes), len(toupload)))

@eh.wrapcommand('summary',
    opts=[('', 'large', None, _('display outgoing largefiles'))])
def overridesummary(orig, ui, repo, *pats, **opts):
    try:
        repo.lfstatus = True
        orig(ui, repo, *pats, **opts)
    finally:
        repo.lfstatus = False

@eh.wrapfunction(scmutil, 'addremove')
def scmutiladdremove(orig, repo, matcher, prefix, uipathfn, opts=None):
    if opts is None:
        opts = {}
    if not lfutil.islfilesrepo(repo):
        return orig(repo, matcher, prefix, uipathfn, opts)
    # Get the list of missing largefiles so we can remove them
    lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
    unsure, s = lfdirstate.status(matchmod.always(), subrepos=[],
                                  ignored=False, clean=False, unknown=False)

    # Call into the normal remove code, but the removing of the standin, we want
    # to have handled by original addremove.  Monkey patching here makes sure
    # we don't remove the standin in the largefiles code, preventing a very
    # confused state later.

        # or not the file name is printed, and how.  Simply limit the original
        # matches to those in the deleted status list.
        matchfn = m.matchfn
        m.matchfn = lambda f: f in s.deleted and matchfn(f)

        removelargefiles(repo.ui, repo, True, m, uipathfn, opts.get('dry_run'),
                         **pycompat.strkwargs(opts))
    # Call into the normal add code, and any files that *should* be added as
    # largefiles will be
    added, bad = addlargefiles(repo.ui, repo, True, matcher, uipathfn,
                               **pycompat.strkwargs(opts))
    # Now that we've handled largefiles, hand off to the original addremove
    # function to take care of the rest.  Make sure it doesn't do anything with
    # largefiles by passing a matcher that will ignore them.
    matcher = composenormalfilematcher(matcher, repo[None].manifest(), added)
    return orig(repo, matcher, prefix, uipathfn, opts)

# Calling purge with --all will cause the largefiles to be deleted.
# Override repo.status to prevent this from happening.
@eh.wrapcommand('purge', extension='purge')
def overridepurge(orig, ui, repo, *dirs, **opts):

    #
    # As a work around we use an unfiltered repo here. We should do something
    # cleaner instead.
    repo = repo.unfiltered()
    oldstatus = repo.status
    def overridestatus(node1='.', node2=None, match=None, ignored=False,
                        clean=False, unknown=False, listsubrepos=False):
        r = oldstatus(node1, node2, match, ignored, clean, unknown,
                      listsubrepos)
        lfdirstate = lfutil.openlfdirstate(ui, repo)
        unknown = [f for f in r.unknown if lfdirstate[f] == '?']
        ignored = [f for f in r.ignored if lfdirstate[f] == '?']
        return scmutil.status(r.modified, r.added, r.removed, r.deleted,
                              unknown, ignored, r.clean)
    repo.status = overridestatus
    orig(ui, repo, *dirs, **opts)
    repo.status = oldstatus

@eh.wrapcommand('rollback')
def overriderollback(orig, ui, repo, **opts):
    with repo.wlock():
        before = repo.dirstate.parents()
        orphans = set(f for f in repo.dirstate
                      if lfutil.isstandin(f) and repo.dirstate[f] != 'r')
        result = orig(ui, repo, **opts)
        after = repo.dirstate.parents()
        if before == after:
            return result # no need to restore standins

        pctx = repo['.']
        for f in repo.dirstate:
            if lfutil.isstandin(f):
                orphans.discard(f)

        for lfile in orphans:
            lfdirstate.drop(lfile)
        lfdirstate.write()
    return result

@eh.wrapcommand('transplant', extension='transplant')
def overridetransplant(orig, ui, repo, *revs, **opts):
    resuming = opts.get(r'continue')
    repo._lfcommithooks.append(lfutil.automatedcommithook(resuming))
    repo._lfstatuswriters.append(lambda *msg, **opts: None)

    finally:
        repo._lfstatuswriters.pop()
        repo._lfcommithooks.pop()
    return result

@eh.wrapcommand('cat')
def overridecat(orig, ui, repo, file1, *pats, **opts):
    opts = pycompat.byteskwargs(opts)
    ctx = scmutil.revsingle(repo, opts.get('rev'))
    err = 1
    notbad = set()
    m = scmutil.match(ctx, (file1,) + pats, opts)
    origmatchfn = m.matchfn
    def lfmatchfn(f):
        if origmatchfn(f):
            return True
        lf = lfutil.splitstandin(f)
        if lf is None:
            return False
        notbad.add(lf)
        return origmatchfn(lf)
    m.matchfn = lfmatchfn
    origbadfn = m.bad
    def lfbadfn(f, msg):
        if not f in notbad:
            origbadfn(f, msg)
    m.bad = lfbadfn

    origvisitdirfn = m.visitdir
    def lfvisitdirfn(dir):
        if dir == lfutil.shortname:
            return True
        ret = origvisitdirfn(dir)
        if ret:
            return ret
        lf = lfutil.splitstandin(dir)
        if lf is None:
            return False
        return origvisitdirfn(lf)
    m.visitdir = lfvisitdirfn

    for f in ctx.walk(m):
        with cmdutil.makefileobj(ctx, opts.get('output'), pathname=f) as fp:
            lf = lfutil.splitstandin(f)

                if not lfutil.inusercache(repo.ui, hash):
                    store = storefactory.openstore(repo)
                    success, missing = store.get([(lf, hash)])
                    if len(success) != 1:
                        raise error.Abort(
                            _('largefile %s is not in cache and could not be '
                              'downloaded')  % lf)
                path = lfutil.usercachepath(repo.ui, hash)
                with open(path, "rb") as fpin:
                    for chunk in util.filechunkiter(fpin):
                        fp.write(chunk)
        err = 0
    return err

@eh.wrapfunction(merge, 'update')
def mergeupdate(orig, repo, node, branchmerge, force,
                *args, **kwargs):
    matcher = kwargs.get(r'matcher', None)
    # note if this is a partial update
    partial = matcher and not matcher.always()
    with repo.wlock():
        # branch |       |         |

        #
        # (*) don't care
        # (*1) deprecated, but used internally (e.g: "rebase --collapse")

        lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
        unsure, s = lfdirstate.status(matchmod.always(), subrepos=[],
                                      ignored=False, clean=True, unknown=False)
        oldclean = set(s.clean)
        pctx = repo['.']
        dctx = repo[node]
        for lfile in unsure + s.modified:
            lfileabs = repo.wvfs.join(lfile)
            if not repo.wvfs.exists(lfileabs):
                continue
            lfhash = lfutil.hashfile(lfileabs)
            standin = lfutil.standin(lfile)
            lfutil.writestandin(repo, standin, lfhash,
                                lfutil.getexecutable(lfileabs))
            if (standin in pctx and
                lfhash == lfutil.readasstandin(pctx[standin])):
                oldclean.add(lfile)
        for lfile in s.added:
            fstandin = lfutil.standin(lfile)
            if fstandin not in dctx:
                # in this case, content of standin file is meaningless

        lfdirstate.write()

        if branchmerge or force or partial:
            filelist.extend(s.deleted + s.removed)

        lfcommands.updatelfiles(repo.ui, repo, filelist=filelist,
                                normallookup=partial)

        return result

@eh.wrapfunction(scmutil, 'marktouched')
def scmutilmarktouched(orig, repo, files, *args, **kwargs):
    result = orig(repo, files, *args, **kwargs)

    for f in files:
        lf = lfutil.splitstandin(f)
        if lf is not None:
            filelist.append(lf)
    if filelist:
        lfcommands.updatelfiles(repo.ui, repo, filelist=filelist,
                                printmessage=False, normallookup=True)

    return result

@eh.wrapfunction(upgrade, 'preservedrequirements')
@eh.wrapfunction(upgrade, 'supporteddestrequirements')
def upgraderequirements(orig, repo):
    reqs = orig(repo)
    if 'largefiles' in repo.requirements:
        reqs.add('largefiles')
    return reqs

_lfscheme = 'largefile://'

@eh.wrapfunction(urlmod, 'open')
def openlargefile(orig, ui, url_, data=None):
    if url_.startswith(_lfscheme):
        if data:
            msg = "cannot use data on a 'largefile://' url"
            raise error.ProgrammingError(msg)
        lfid = url_[len(_lfscheme):]
        return storefactory.getlfile(ui, lfid)
    else:
        return orig(ui, url_, data=data)

43076:2372284d9457

import copy
import os

from mercurial.i18n import _

from mercurial.hgweb import webcommands

from mercurial import (
    archival,
    cmdutil,
    copies as copiesmod,

eh = exthelper.exthelper()

# -- Utility functions: commonly/repeatedly needed functionality ---------------


def composelargefilematcher(match, manifest):
    '''create a matcher that matches only the largefiles in the original
    matcher'''
    m = copy.copy(match)
    lfile = lambda f: lfutil.standin(f) in manifest

    m.always = lambda: False
    origmatchfn = m.matchfn
    m.matchfn = lambda f: lfile(f) and origmatchfn(f)
    return m


def composenormalfilematcher(match, manifest, exclude=None):
    excluded = set()
    if exclude is not None:
        excluded.update(exclude)

    m = copy.copy(match)
    notlfile = lambda f: not (
        lfutil.isstandin(f) or lfutil.standin(f) in manifest or f in excluded
    )
    m._files = [lf for lf in m._files if notlfile(lf)]
    m._fileset = set(m._files)
    m.always = lambda: False
    origmatchfn = m.matchfn
    m.matchfn = lambda f: notlfile(f) and origmatchfn(f)
    return m


def addlargefiles(ui, repo, isaddremove, matcher, uipathfn, **opts):
    large = opts.get(r'large')
    lfsize = lfutil.getminsize(
        ui, lfutil.islfilesrepo(repo), opts.get(r'lfsize')
    )

    lfmatcher = None
    if lfutil.islfilesrepo(repo):
        lfpats = ui.configlist(lfutil.longname, 'patterns')
        if lfpats:

            # In case the file was removed previously, but not committed
            # (issue3507)
            if not repo.wvfs.exists(f):
                continue

            abovemin = (
                lfsize and repo.wvfs.lstat(f).st_size >= lfsize * 1024 * 1024
            )
            if large or abovemin or (lfmatcher and lfmatcher(f)):
                lfnames.append(f)
                if ui.verbose or not exact:
                    ui.status(_('adding %s as a largefile\n') % uipathfn(f))

        if not opts.get(r'dry_run'):
            standins = []
            lfdirstate = lfutil.openlfdirstate(ui, repo)
            for f in lfnames:
                standinname = lfutil.standin(f)
                lfutil.writestandin(
                    repo,
                    standinname,
                    hash='',
                    executable=lfutil.getexecutable(repo.wjoin(f)),
                )
                standins.append(standinname)
                if lfdirstate[f] == 'r':
                    lfdirstate.normallookup(f)
                else:
                    lfdirstate.add(f)
            lfdirstate.write()
            bad += [
                lfutil.splitstandin(f)
                for f in repo[None].add(standins)
                if f in m.files()
            ]

        added = [f for f in lfnames if f not in bad]
    return added, bad


def removelargefiles(ui, repo, isaddremove, matcher, uipathfn, dryrun, **opts):
    after = opts.get(r'after')
    m = composelargefilematcher(matcher, repo[None].manifest())
    try:
        repo.lfstatus = True
        s = repo.status(match=m, clean=not isaddremove)
    finally:
        repo.lfstatus = False
    manifest = repo[None].manifest()
    modified, added, deleted, clean = [
        [f for f in list if lfutil.standin(f) in manifest]
        for list in (s.modified, s.added, s.deleted, s.clean)
    ]

    def warn(files, msg):
        for f in files:
            ui.warn(msg % uipathfn(f))
        return int(len(files) > 0)

    if after:
        remove = deleted
        result = warn(
            modified + added + clean, _('not removing %s: file still exists\n')
        )
    else:
        remove = deleted + clean
        result = warn(
            modified,
            _(
                'not removing %s: file is modified (use -f'
                ' to force removal)\n'
            ),
        )
        result = (
            warn(
                added,
                _(
                    'not removing %s: file has been marked for add'
                    ' (use forget to undo)\n'
                ),
            )
            or result
        )

    # Need to lock because standin files are deleted then removed from the
    # repository and we could race in-between.
    with repo.wlock():
        lfdirstate = lfutil.openlfdirstate(ui, repo)

            for f in remove:
                repo.wvfs.unlinkpath(f, ignoremissing=True)
        repo[None].forget(remove)

        for f in remove:
            lfutil.synclfdirstate(
                repo, lfdirstate, lfutil.splitstandin(f), False
            )

        lfdirstate.write()

    return result


# For overriding mercurial.hgweb.webcommands so that largefiles will
# appear at their right place in the manifests.
@eh.wrapfunction(webcommands, 'decodepath')
def decodepath(orig, path):
    return lfutil.splitstandin(path) or path


# -- Wrappers: modify existing commands --------------------------------


@eh.wrapcommand(
    'add',
    opts=[
        ('', 'large', None, _('add as largefile')),
        ('', 'normal', None, _('add as normal file')),
        (
            '',
            'lfsize',
            '',
            _(
                'add all files above this size (in megabytes) '
                'as largefiles (default: 10)'
            ),
        ),
    ],
)
def overrideadd(orig, ui, repo, *pats, **opts):
    if opts.get(r'normal') and opts.get(r'large'):
        raise error.Abort(_('--normal cannot be used with --large'))
    return orig(ui, repo, *pats, **opts)


@eh.wrapfunction(cmdutil, 'add')
def cmdutiladd(orig, ui, repo, matcher, prefix, uipathfn, explicitonly, **opts):
    # The --normal flag short circuits this override
    if opts.get(r'normal'):
        return orig(ui, repo, matcher, prefix, uipathfn, explicitonly, **opts)

    ladded, lbad = addlargefiles(ui, repo, False, matcher, uipathfn, **opts)
    normalmatcher = composenormalfilematcher(
        matcher, repo[None].manifest(), ladded
    )
    bad = orig(ui, repo, normalmatcher, prefix, uipathfn, explicitonly, **opts)

    bad.extend(f for f in lbad)
    return bad


@eh.wrapfunction(cmdutil, 'remove')
def cmdutilremove(
    orig, ui, repo, matcher, prefix, uipathfn, after, force, subrepos, dryrun
):
    normalmatcher = composenormalfilematcher(matcher, repo[None].manifest())
    result = orig(
        ui,
        repo,
        normalmatcher,
        prefix,
        uipathfn,
        after,
        force,
        subrepos,
        dryrun,
    )
    return (
        removelargefiles(
            ui, repo, False, matcher, uipathfn, dryrun, after=after, force=force
        )
        or result
    )


@eh.wrapfunction(subrepo.hgsubrepo, 'status')
def overridestatusfn(orig, repo, rev2, **opts):
    try:
        repo._repo.lfstatus = True
        return orig(repo, rev2, **opts)
    finally:
        repo._repo.lfstatus = False


@eh.wrapcommand('status')
def overridestatus(orig, ui, repo, *pats, **opts):
    try:
        repo.lfstatus = True
        return orig(ui, repo, *pats, **opts)
    finally:
        repo.lfstatus = False


@eh.wrapfunction(subrepo.hgsubrepo, 'dirty')
def overridedirty(orig, repo, ignoreupdate=False, missing=False):
    try:
        repo._repo.lfstatus = True
        return orig(repo, ignoreupdate=ignoreupdate, missing=missing)
    finally:
        repo._repo.lfstatus = False


@eh.wrapcommand('log')
def overridelog(orig, ui, repo, *pats, **opts):
    def overridematchandpats(
        orig,
        ctx,
        pats=(),
        opts=None,
        globbed=False,
        default='relpath',
        badfn=None,
    ):
        """Matcher that merges root directory with .hglf, suitable for log.
        It is still possible to match .hglf directly.
        For any listed files run log on the standin too.
        matchfn tries both the given filename and with .hglf stripped.
        """

            return tostandin(kindpat[1])

        cwd = repo.getcwd()
        if cwd:
            hglf = lfutil.shortname
            back = util.pconvert(repo.pathto(hglf)[: -len(hglf)])

            def tostandin(f):
                # The file may already be a standin, so truncate the back
                # prefix and test before mangling it.  This avoids turning
                # 'glob:../.hglf/foo*' into 'glob:../.hglf/../.hglf/foo*'.
                if f.startswith(back) and lfutil.splitstandin(f[len(back) :]):
                    return f

                # An absolute path is from outside the repo, so truncate the
                # path to the root before building the standin.  Otherwise cwd
                # is somewhere in the repo, relative to root, and needs to be
                # prepended before building the standin.
                if os.path.isabs(cwd):
                    f = f[len(back) :]
                else:
                    f = cwd + '/' + f
                return back + lfutil.standin(f)

        else:

            def tostandin(f):
                if lfutil.isstandin(f):
                    return f
                return lfutil.standin(f)

        pats.update(fixpats(f, tostandin) for f in p)

        for i in range(0, len(m._files)):
            # Don't add '.hglf' to m.files, since that is already covered by '.'
            if m._files[i] == '.':

                m._files.append(standin)

        m._fileset = set(m._files)
        m.always = lambda: False
        origmatchfn = m.matchfn

        def lfmatchfn(f):
            lf = lfutil.splitstandin(f)
            if lf is not None and origmatchfn(lf):
                return True
            r = origmatchfn(f)
            return r

        m.matchfn = lfmatchfn

        ui.debug('updated patterns: %s\n' % ', '.join(sorted(pats)))
        return m, pats

    # (1) to determine what revisions should be printed out, and
    # (2) to determine what files to print out diffs for.
    # The magic matchandpats override should be used for case (1) but not for
    # case (2).
    oldmatchandpats = scmutil.matchandpats

    def overridemakefilematcher(orig, repo, pats, opts, badfn=None):
        wctx = repo[None]
        match, pats = oldmatchandpats(wctx, pats, opts, badfn=badfn)
        return lambda ctx: match

    wrappedmatchandpats = extensions.wrappedfunction(
        scmutil, 'matchandpats', overridematchandpats
    )
    wrappedmakefilematcher = extensions.wrappedfunction(
        logcmdutil, '_makenofollowfilematcher', overridemakefilematcher
    )
    with wrappedmatchandpats, wrappedmakefilematcher:
        return orig(ui, repo, *pats, **opts)


@eh.wrapcommand(
    'verify',
    opts=[
        (
            '',
            'large',
            None,
            _('verify that all largefiles in current revision exists'),
        ),
        (
            '',
            'lfa',
            None,
            _('verify largefiles in all revisions, not just current'),
        ),
        (
            '',
            'lfc',
            None,
            _('verify local largefile contents, not just existence'),
        ),
    ],
)
def overrideverify(orig, ui, repo, *pats, **opts):
    large = opts.pop(r'large', False)
    all = opts.pop(r'lfa', False)
    contents = opts.pop(r'lfc', False)

    result = orig(ui, repo, *pats, **opts)
    if large or all or contents:
        result = result or lfcommands.verifylfiles(ui, repo, all, contents)
    return result


@eh.wrapcommand(
    'debugstate', opts=[('', 'large', None, _('display largefiles dirstate'))]
)
def overridedebugstate(orig, ui, repo, *pats, **opts):
    large = opts.pop(r'large', False)
    if large:

        class fakerepo(object):
            dirstate = lfutil.openlfdirstate(ui, repo)

        orig(ui, fakerepo, *pats, **opts)
    else:
        orig(ui, repo, *pats, **opts)


# Before starting the manifest merge, merge.updates will call
# _checkunknownfile to check if there are any files in the merged-in
# changeset that collide with unknown files in the working copy.
#

@eh.wrapfunction(merge, '_checkunknownfile')
def overridecheckunknownfile(origfn, repo, wctx, mctx, f, f2=None):
    if lfutil.standin(repo.dirstate.normalize(f)) in wctx:
        return False
    return origfn(repo, wctx, mctx, f, f2)


# The manifest merge handles conflicts on the manifest level. We want
# to handle changes in largefile-ness of files at this level too.
#
# The strategy is to run the original calculateupdates and then process

#
# Finally, the merge.applyupdates function will then take care of
# writing the files into the working copy and lfcommands.updatelfiles
# will update the largefiles.
@eh.wrapfunction(merge, 'calculateupdates')
def overridecalculateupdates(
    origfn, repo, p1, p2, pas, branchmerge, force, acceptremote, *args, **kwargs
):
    overwrite = force and not branchmerge
    actions, diverge, renamedelete = origfn(
        repo, p1, p2, pas, branchmerge, force, acceptremote, *args, **kwargs
    )

    if overwrite:
        return actions, diverge, renamedelete

    # Convert to dictionary with filename as key and action as value.

            if sm == 'dc':
                f1, f2, fa, move, anc = sargs
                sargs = (p2[f2].flags(), False)
            # Case 1: normal file in the working copy, largefile in
            # the second parent
            usermsg = (
                _(
                    'remote turned local normal file %s into a largefile\n'
                    'use (l)argefile or keep (n)ormal file?'
                    '$$ &Largefile $$ &Normal file'
                )
                % lfile
            )
            if repo.ui.promptchoice(usermsg, 0) == 0:  # pick remote largefile
                actions[lfile] = ('r', None, 'replaced by standin')
                actions[standin] = ('g', sargs, 'replaces standin')
            else:  # keep local normal file
                actions[lfile] = ('k', None, 'replaces standin')
                if branchmerge:
                    actions[standin] = ('k', None, 'replaced by non-standin')
                else:
                    actions[standin] = ('r', None, 'replaced by non-standin')

            if lm == 'dc':
                f1, f2, fa, move, anc = largs
                largs = (p2[f2].flags(), False)
            # Case 2: largefile in the working copy, normal file in
            # the second parent
            usermsg = (
                _(
                    'remote turned local largefile %s into a normal file\n'
                    'keep (l)argefile or use (n)ormal file?'
                    '$$ &Largefile $$ &Normal file'
                )
                % lfile
            )
            if repo.ui.promptchoice(usermsg, 0) == 0:  # keep local largefile
                if branchmerge:
                    # largefile can be restored from standin safely
                    actions[lfile] = ('k', None, 'replaced by standin')
                    actions[standin] = ('k', None, 'replaces standin')
                else:
                    # "lfile" should be marked as "removed" without
                    # removal of itself
                    actions[lfile] = (
                        'lfmr',
                        None,
                        'forget non-standin largefile',
                    )

                    # linear-merge should treat this largefile as 're-added'
                    actions[standin] = ('a', None, 'keep standin')
            else:  # pick remote normal file
                actions[lfile] = ('g', largs, 'replaces standin')
                actions[standin] = ('r', None, 'replaced by non-standin')

    return actions, diverge, renamedelete


@eh.wrapfunction(merge, 'recordupdates')
def mergerecordupdates(orig, repo, actions, branchmerge, getfiledata):
    if 'lfmr' in actions:
        lfdirstate = lfutil.openlfdirstate(repo.ui, repo)

            lfdirstate.add(lfile)
        lfdirstate.write()

    return orig(repo, actions, branchmerge, getfiledata)


# Override filemerge to prompt the user about how they wish to merge
# largefiles. This will handle identical edits without prompting the user.
@eh.wrapfunction(filemerge, '_filemerge')
def overridefilemerge(
    origfn, premerge, repo, wctx, mynode, orig, fcd, fco, fca, labels=None
):
    if not lfutil.isstandin(orig) or fcd.isabsent() or fco.isabsent():
        return origfn(
            premerge, repo, wctx, mynode, orig, fcd, fco, fca, labels=labels
        )

    ahash = lfutil.readasstandin(fca).lower()
    dhash = lfutil.readasstandin(fcd).lower()
    ohash = lfutil.readasstandin(fco).lower()
    if (
        ohash != ahash
        and ohash != dhash
        and (
            dhash == ahash
            or repo.ui.promptchoice(
                _(
                    'largefile %s has a merge conflict\nancestor was %s\n'
                    'you can keep (l)ocal %s or take (o)ther %s.\n'
                    'what do you want to do?'
                    '$$ &Local $$ &Other'
                )
                % (lfutil.splitstandin(orig), ahash, dhash, ohash),
                0,
            )
            == 1
        )
    ):
        repo.wwrite(fcd.path(), fco.data(), fco.flags())
    return True, 0, False


@eh.wrapfunction(copiesmod, 'pathcopies')
def copiespathcopies(orig, ctx1, ctx2, match=None):
    copies = orig(ctx1, ctx2, match=match)
    updated = {}

    for k, v in copies.iteritems():
        updated[lfutil.splitstandin(k) or k] = lfutil.splitstandin(v) or v

    return updated


# Copy first changes the matchers to match standins instead of
# largefiles.  Then it overrides util.copyfile in that function it
# checks if the destination largefile already exists. It also keeps a
# list of copied files so that the largefiles can be copied and the

    # only match normal files and run it, then replace it to just
    # match largefiles and run it again.
    nonormalfiles = False
    nolfiles = False
    manifest = repo[None].manifest()

    def normalfilesmatchfn(
        orig,
        ctx,
        pats=(),
        opts=None,
        globbed=False,
        default='relpath',
        badfn=None,
    ):
        if opts is None:
            opts = {}
        match = orig(ctx, pats, opts, globbed, default, badfn=badfn)
        return composenormalfilematcher(match, manifest)

    with extensions.wrappedfunction(scmutil, 'match', normalfilesmatchfn):
        try:
            result = orig(ui, repo, pats, opts, rename)
        except error.Abort as e:
            if pycompat.bytestr(e) != _('no files to copy'):

        # When we call orig below it creates the standins but we don't add
        # them to the dir state until later so lock during that time.
        wlock = repo.wlock()

        manifest = repo[None].manifest()

        def overridematch(
            orig,
            ctx,
            pats=(),
            opts=None,
            globbed=False,
            default='relpath',
            badfn=None,
        ):
            if opts is None:
                opts = {}
            newpats = []
            # The patterns were previously mangled to add the standin
            # directory; we need to remove that now

            m = copy.copy(match)
            lfile = lambda f: lfutil.standin(f) in manifest
            m._files = [lfutil.standin(f) for f in m._files if lfile(f)]
            m._fileset = set(m._files)
            origmatchfn = m.matchfn

            def matchfn(f):
                lfile = lfutil.splitstandin(f)
                return (
                    lfile is not None
                    and (f in manifest)
                    and origmatchfn(lfile)
                    or None
                )

            m.matchfn = matchfn
            return m

        listpats = []
        for pat in pats:
            if matchmod.patkind(pat) is not None:
                listpats.append(pat)
            else:
                listpats.append(makestandin(pat))

        copiedfiles = []

        def overridecopyfile(orig, src, dest, *args, **kwargs):
            if lfutil.shortname in src and dest.startswith(
                repo.wjoin(lfutil.shortname)
            ):
                destlfile = dest.replace(lfutil.shortname, '')
                if not opts['force'] and os.path.exists(destlfile):
                    raise IOError('', _('destination largefile already exists'))
            copiedfiles.append((src, dest))
            orig(src, dest, *args, **kwargs)

        with extensions.wrappedfunction(util, 'copyfile', overridecopyfile):
            with extensions.wrappedfunction(scmutil, 'match', overridematch):
                result += orig(ui, repo, listpats, opts, rename)

        lfdirstate = lfutil.openlfdirstate(ui, repo)
        for (src, dest) in copiedfiles:
            if lfutil.shortname in src and dest.startswith(
                repo.wjoin(lfutil.shortname)
            ):
                srclfile = src.replace(repo.wjoin(lfutil.standin('')), '')
                destlfile = dest.replace(repo.wjoin(lfutil.standin('')), '')
                destlfiledir = repo.wvfs.dirname(repo.wjoin(destlfile)) or '.'
                if not os.path.isdir(destlfiledir):
                    os.makedirs(destlfiledir)

                    # The file is gone, but this deletes any empty parent
                    # directories as a side-effect.
                    repo.wvfs.unlinkpath(srclfile, ignoremissing=True)
                    lfdirstate.remove(srclfile)
                else:
                    util.copyfile(repo.wjoin(srclfile), repo.wjoin(destlfile))

                lfdirstate.add(destlfile)
        lfdirstate.write()
    except error.Abort as e:
        if pycompat.bytestr(e) != _('no files to copy'):

    if nolfiles and nonormalfiles:
        raise error.Abort(_('no files to copy'))

    return result


# When the user calls revert, we have to be careful to not revert any
# changes to other largefiles accidentally. This means we have to keep
# track of the largefiles that are being reverted so we only pull down
# the necessary largefiles.

        lfdirstate.write()
        for lfile in s.modified:
            lfutil.updatestandin(repo, lfile, lfutil.standin(lfile))
        for lfile in s.deleted:
            fstandin = lfutil.standin(lfile)
            if repo.wvfs.exists(fstandin):
                repo.wvfs.unlink(fstandin)

        oldstandins = lfutil.getstandinsstate(repo)

        def overridematch(
            orig,
            mctx,
            pats=(),
            opts=None,
            globbed=False,
            default='relpath',
            badfn=None,
        ):
            if opts is None:
                opts = {}
            match = orig(mctx, pats, opts, globbed, default, badfn=badfn)
            m = copy.copy(match)

            # revert supports recursing into subrepos, and though largefiles
            # currently doesn't work correctly in that case, this match is
            # called, so the lfdirstate above may not be the correct one for
            # this invocation of match.
            lfdirstate = lfutil.openlfdirstate(
                mctx.repo().ui, mctx.repo(), False
            )

            wctx = repo[None]
            matchfiles = []
            for f in m._files:
                standin = lfutil.standin(f)

                else:
                    matchfiles.append(f)
            m._files = matchfiles
            m._fileset = set(m._files)
            origmatchfn = m.matchfn

            def matchfn(f):
                lfile = lfutil.splitstandin(f)
                if lfile is not None:
                    return origmatchfn(lfile) and (f in ctx or f in mctx)
                return origmatchfn(f)

            m.matchfn = matchfn
            return m

        with extensions.wrappedfunction(scmutil, 'match', overridematch):
            orig(ui, repo, ctx, parents, *pats, **opts)

        newstandins = lfutil.getstandinsstate(repo)
        filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
        # lfdirstate should be 'normallookup'-ed for updated files,
        # because reverting doesn't touch dirstate for 'normal' files
        # when target revision is explicitly specified: in such case,
        # 'n' and valid timestamp in dirstate doesn't ensure 'clean'
        # of target (standin) file.
        lfcommands.updatelfiles(
            ui, repo, filelist, printmessage=False, normallookup=True
        )


# after pulling changesets, we need to take some extra care to get
# largefiles updated remotely
@eh.wrapcommand(
    'pull',
    opts=[
        (
            '',
            'all-largefiles',
            None,
            _('download all pulled versions of largefiles (DEPRECATED)'),
        ),
        (
            '',
            'lfrev',
            [],
            _('download largefiles for these revisions'),
            _('REV'),
        ),
    ],
)
def overridepull(orig, ui, repo, source=None, **opts):
    revsprepull = len(repo)
    if not source:
        source = 'default'
    repo.lfpullsource = source

    lfrevs = opts.get(r'lfrev', [])
    if opts.get(r'all_largefiles'):
        lfrevs.append('pulled()')
    if lfrevs and revspostpull > revsprepull:
        numcached = 0
        repo.firstpulled = revsprepull  # for pulled() revset expression
        try:
            for rev in scmutil.revrange(repo, lfrevs):
                ui.note(_('pulling largefiles for revision %d\n') % rev)
                (cached, missing) = lfcommands.cachelfiles(ui, repo, rev)
                numcached += len(cached)
        finally:
            del repo.firstpulled
        ui.status(_("%d largefiles cached\n") % numcached)
    return result


@eh.wrapcommand(
    'push',
    opts=[
        ('', 'lfrev', [], _('upload largefiles for these revisions'), _('REV'))
    ],
)
def overridepush(orig, ui, repo, *args, **kwargs):
    """Override push command and store --lfrev parameters in opargs"""
    lfrevs = kwargs.pop(r'lfrev', None)
    if lfrevs:
        opargs = kwargs.setdefault(r'opargs', {})
        opargs['lfrevs'] = scmutil.revrange(repo, lfrevs)
    return orig(ui, repo, *args, **kwargs)


@eh.wrapfunction(exchange, 'pushoperation')
def exchangepushoperation(orig, *args, **kwargs):
    """Override pushoperation constructor and store lfrevs parameter"""
    lfrevs = kwargs.pop(r'lfrevs', None)
    pushop = orig(*args, **kwargs)
    pushop.lfrevs = lfrevs
    return pushop


@eh.revsetpredicate('pulled()')
def pulledrevsetsymbol(repo, subset, x):
    """Changesets that just has been pulled.

    Only available with largefiles from pull --lfrev expressions.

        firstpulled = repo.firstpulled
    except AttributeError:
        raise error.Abort(_("pulled() only available in --lfrev"))
    return smartset.baseset([r for r in subset if r >= firstpulled])


@eh.wrapcommand(
    'clone',
    opts=[
        (
            '',
            'all-largefiles',
            None,
            _('download all versions of all largefiles'),
        )
    ],
)
def overrideclone(orig, ui, source, dest=None, **opts):
    d = dest
    if d is None:
        d = hg.defaultdest(source)
    if opts.get(r'all_largefiles') and not hg.islocal(d):
        raise error.Abort(
            _('--all-largefiles is incompatible with non-local destination %s')
            % d
        )

    return orig(ui, source, dest, **opts)


@eh.wrapfunction(hg, 'clone')
def hgclone(orig, ui, opts, *args, **kwargs):
    result = orig(ui, opts, *args, **kwargs)

            if missing != 0:
                return None

    return result


@eh.wrapcommand('rebase', extension='rebase')
def overriderebase(orig, ui, repo, **opts):
    if not util.safehasattr(repo, '_largefilesenabled'):
        return orig(ui, repo, **opts)

        return orig(ui, repo, **opts)
    finally:
        repo._lfstatuswriters.pop()
        repo._lfcommithooks.pop()


@eh.wrapcommand('archive')
def overridearchivecmd(orig, ui, repo, dest, **opts):
    repo.unfiltered().lfstatus = True

    try:
        return orig(ui, repo.unfiltered(), dest, **opts)
    finally:
        repo.unfiltered().lfstatus = False


@eh.wrapfunction(webcommands, 'archive')
def hgwebarchive(orig, web):
    web.repo.lfstatus = True

    try:
        return orig(web)
    finally:
        web.repo.lfstatus = False


@eh.wrapfunction(archival, 'archive')
def overridearchive(
    orig,
    repo,
    dest,
    node,
    kind,
    decode=True,
    match=None,
    prefix='',
    mtime=None,
    subrepos=None,
):
    # For some reason setting repo.lfstatus in hgwebarchive only changes the
    # unfiltered repo's attr, so check that as well.
    if not repo.lfstatus and not repo.unfiltered().lfstatus:
        return orig(
            repo, dest, node, kind, decode, match, prefix, mtime, subrepos
        )

    # No need to lock because we are only reading history and
    # largefile caches, neither of which are modified.
    if node is not None:
        lfcommands.cachelfiles(repo.ui, repo, node)

    ctx = repo[node]

    if kind == 'files':
        if prefix:
            raise error.Abort(_('cannot give prefix when archiving to files'))
    else:
        prefix = archival.tidyprefix(dest, kind, prefix)

    def write(name, mode, islink, getdata):
        if match and not match(name):

        archiver.addfile(prefix + name, mode, islink, data)

    archiver = archival.archivers[kind](dest, mtime or ctx.date()[0])

    if repo.ui.configbool("ui", "archivemeta"):
        write(
            '.hg_archival.txt',
            0o644,
            False,
            lambda: archival.buildmetadata(ctx),
        )

    for f in ctx:
        ff = ctx.flags(f)
        getdata = ctx[f].data
        lfile = lfutil.splitstandin(f)

            if node is not None:
                path = lfutil.findfile(repo, getdata().strip())

                if path is None:
                    raise error.Abort(
                        _(
                            'largefile %s not found in repo store or system cache'
                        )
                        % lfile
                    )
            else:
                path = lfile

            f = lfile

            subprefix = prefix + subpath + '/'
            sub._repo.lfstatus = True
            sub.archive(archiver, subprefix, submatch)

    archiver.done()


@eh.wrapfunction(subrepo.hgsubrepo, 'archive')
def hgsubrepoarchive(orig, repo, archiver, prefix, match=None, decode=True):
    lfenabled = util.safehasattr(repo._repo, '_largefilesenabled')
    if not lfenabled or not repo._repo.lfstatus:

            if ctx.node() is not None:
                path = lfutil.findfile(repo._repo, getdata().strip())

                if path is None:
                    raise error.Abort(
                        _(
                            'largefile %s not found in repo store or system cache'
                        )
                        % lfile
                    )
            else:
                path = lfile

            f = lfile

        sub = ctx.workingsub(subpath)
        submatch = matchmod.subdirmatcher(subpath, match)
        subprefix = prefix + subpath + '/'
        sub._repo.lfstatus = True
        sub.archive(archiver, subprefix, submatch, decode)


# If a largefile is modified, the change is not reflected in its
# standin until a commit. cmdutil.bailifchanged() raises an exception
# if the repo has uncommitted changes. Wrap it to also check if
# largefiles were changed. This is used by bisect, backout and fetch.

    s = repo.status()
    repo.lfstatus = False
    if s.modified or s.added or s.removed or s.deleted:
        raise error.Abort(_('uncommitted changes'))


@eh.wrapfunction(cmdutil, 'postcommitstatus')
def postcommitstatus(orig, repo, *args, **kwargs):
    repo.lfstatus = True
    try:
        return orig(repo, *args, **kwargs)
    finally:
        repo.lfstatus = False


@eh.wrapfunction(cmdutil, 'forget')
def cmdutilforget(
    orig, ui, repo, match, prefix, uipathfn, explicitonly, dryrun, interactive
):
    normalmatcher = composenormalfilematcher(match, repo[None].manifest())
    bad, forgot = orig(
        ui,
        repo,
        normalmatcher,
        prefix,
        uipathfn,
        explicitonly,
        dryrun,
        interactive,
    )
    m = composelargefilematcher(match, repo[None].manifest())

    try:
        repo.lfstatus = True
        s = repo.status(match=m, clean=True)

    forget = [f for f in forget if lfutil.standin(f) in manifest]

    for f in forget:
        fstandin = lfutil.standin(f)
        if fstandin not in repo.dirstate and not repo.wvfs.isdir(fstandin):
            ui.warn(
                _('not removing %s: file is already untracked\n') % uipathfn(f)
            )
            bad.append(f)

    for f in forget:
        if ui.verbose or not m.exact(f):
            ui.status(_('removing %s\n') % uipathfn(f))

    bad.extend(f for f in rejected if f in m.files())
    forgot.extend(f for f in forget if f not in rejected)
    return bad, forgot


def _getoutgoings(repo, other, missing, addfunc):
    """get pairs of filename and largefile hash in outgoing revisions
    in 'missing'.

    largefiles already existing on 'other' repository are ignored.

    'addfunc' is invoked with each unique pairs of filename and
    largefile hash value.
    """
    knowns = set()
    lfhashes = set()

    def dedup(fn, lfhash):
        k = (fn, lfhash)
        if k not in knowns:
            knowns.add(k)
            lfhashes.add(lfhash)

    lfutil.getlfilestoupload(repo, missing, dedup)
    if lfhashes:
        lfexists = storefactory.openstore(repo, other).exists(lfhashes)
        for fn, lfhash in knowns:
            if not lfexists[lfhash]:  # lfhash doesn't exist on "other"
                addfunc(fn, lfhash)


def outgoinghook(ui, repo, other, opts, missing):
    if opts.pop('large', None):
        lfhashes = set()
        if ui.debugflag:
            toupload = {}

            def addfunc(fn, lfhash):
                if fn not in toupload:
                    toupload[fn] = []
                toupload[fn].append(lfhash)
                lfhashes.add(lfhash)

            def showhashes(fn):
                for lfhash in sorted(toupload[fn]):
                    ui.debug('    %s\n' % lfhash)

        else:
            toupload = set()

            def addfunc(fn, lfhash):
                toupload.add(fn)
                lfhashes.add(lfhash)

            def showhashes(fn):
                pass

        _getoutgoings(repo, other, missing, addfunc)

        if not toupload:
            ui.status(_('largefiles: no files to upload\n'))
        else:
            ui.status(
                _('largefiles to upload (%d entities):\n') % (len(lfhashes))
            )
            for file in sorted(toupload):
                ui.status(lfutil.splitstandin(file) + '\n')
                showhashes(file)
            ui.status('\n')


@eh.wrapcommand(
    'outgoing', opts=[('', 'large', None, _('display outgoing largefiles'))]
)
def _outgoingcmd(orig, *args, **kwargs):
    # Nothing to do here other than add the extra help option- the hook above
    # processes it.
    return orig(*args, **kwargs)


def summaryremotehook(ui, repo, opts, changes):
    largeopt = opts.get('large', False)
    if changes is None:
        if largeopt:
            return (False, True)  # only outgoing check is needed
        else:
            return (False, False)
    elif largeopt:
        url, branch, peer, outgoing = changes[1]
        if peer is None:

            ui.status(_('largefiles: (no remote repo)\n'))
            return

        toupload = set()
        lfhashes = set()

        def addfunc(fn, lfhash):
            toupload.add(fn)
            lfhashes.add(lfhash)

        _getoutgoings(repo, peer, outgoing.missing, addfunc)

        if not toupload:
            # i18n: column positioning for "hg summary"
            ui.status(_('largefiles: (no files to upload)\n'))
        else:
            # i18n: column positioning for "hg summary"
            ui.status(
                _('largefiles: %d entities for %d files to upload\n')
                % (len(lfhashes), len(toupload))
            )


@eh.wrapcommand(
    'summary', opts=[('', 'large', None, _('display outgoing largefiles'))]
)
def overridesummary(orig, ui, repo, *pats, **opts):
    try:
        repo.lfstatus = True
        orig(ui, repo, *pats, **opts)
    finally:
        repo.lfstatus = False


@eh.wrapfunction(scmutil, 'addremove')
def scmutiladdremove(orig, repo, matcher, prefix, uipathfn, opts=None):
    if opts is None:
        opts = {}
    if not lfutil.islfilesrepo(repo):
        return orig(repo, matcher, prefix, uipathfn, opts)
    # Get the list of missing largefiles so we can remove them
    lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
    unsure, s = lfdirstate.status(
        matchmod.always(),
        subrepos=[],
        ignored=False,
        clean=False,
        unknown=False,
    )

    # Call into the normal remove code, but the removing of the standin, we want
    # to have handled by original addremove.  Monkey patching here makes sure
    # we don't remove the standin in the largefiles code, preventing a very
    # confused state later.

        # or not the file name is printed, and how.  Simply limit the original
        # matches to those in the deleted status list.
        matchfn = m.matchfn
        m.matchfn = lambda f: f in s.deleted and matchfn(f)

        removelargefiles(
            repo.ui,
            repo,
            True,
            m,
            uipathfn,
            opts.get('dry_run'),
            **pycompat.strkwargs(opts)
        )
    # Call into the normal add code, and any files that *should* be added as
    # largefiles will be
    added, bad = addlargefiles(
        repo.ui, repo, True, matcher, uipathfn, **pycompat.strkwargs(opts)
    )
    # Now that we've handled largefiles, hand off to the original addremove
    # function to take care of the rest.  Make sure it doesn't do anything with
    # largefiles by passing a matcher that will ignore them.
    matcher = composenormalfilematcher(matcher, repo[None].manifest(), added)
    return orig(repo, matcher, prefix, uipathfn, opts)


# Calling purge with --all will cause the largefiles to be deleted.
# Override repo.status to prevent this from happening.
@eh.wrapcommand('purge', extension='purge')
def overridepurge(orig, ui, repo, *dirs, **opts):

    #
    # As a work around we use an unfiltered repo here. We should do something
    # cleaner instead.
    repo = repo.unfiltered()
    oldstatus = repo.status

    def overridestatus(
        node1='.',
        node2=None,
        match=None,
        ignored=False,
        clean=False,
        unknown=False,
        listsubrepos=False,
    ):
        r = oldstatus(
            node1, node2, match, ignored, clean, unknown, listsubrepos
        )
        lfdirstate = lfutil.openlfdirstate(ui, repo)
        unknown = [f for f in r.unknown if lfdirstate[f] == '?']
        ignored = [f for f in r.ignored if lfdirstate[f] == '?']
        return scmutil.status(
            r.modified, r.added, r.removed, r.deleted, unknown, ignored, r.clean
        )

    repo.status = overridestatus
    orig(ui, repo, *dirs, **opts)
    repo.status = oldstatus


@eh.wrapcommand('rollback')
def overriderollback(orig, ui, repo, **opts):
    with repo.wlock():
        before = repo.dirstate.parents()
        orphans = set(
            f
            for f in repo.dirstate
            if lfutil.isstandin(f) and repo.dirstate[f] != 'r'
        )
        result = orig(ui, repo, **opts)
        after = repo.dirstate.parents()
        if before == after:
            return result  # no need to restore standins

        pctx = repo['.']
        for f in repo.dirstate:
            if lfutil.isstandin(f):
                orphans.discard(f)

        for lfile in orphans:
            lfdirstate.drop(lfile)
        lfdirstate.write()
    return result


@eh.wrapcommand('transplant', extension='transplant')
def overridetransplant(orig, ui, repo, *revs, **opts):
    resuming = opts.get(r'continue')
    repo._lfcommithooks.append(lfutil.automatedcommithook(resuming))
    repo._lfstatuswriters.append(lambda *msg, **opts: None)

    finally:
        repo._lfstatuswriters.pop()
        repo._lfcommithooks.pop()
    return result


@eh.wrapcommand('cat')
def overridecat(orig, ui, repo, file1, *pats, **opts):
    opts = pycompat.byteskwargs(opts)
    ctx = scmutil.revsingle(repo, opts.get('rev'))
    err = 1
    notbad = set()
    m = scmutil.match(ctx, (file1,) + pats, opts)
    origmatchfn = m.matchfn

    def lfmatchfn(f):
        if origmatchfn(f):
            return True
        lf = lfutil.splitstandin(f)
        if lf is None:
            return False
        notbad.add(lf)
        return origmatchfn(lf)

    m.matchfn = lfmatchfn
    origbadfn = m.bad

    def lfbadfn(f, msg):
        if not f in notbad:
            origbadfn(f, msg)

    m.bad = lfbadfn

    origvisitdirfn = m.visitdir

    def lfvisitdirfn(dir):
        if dir == lfutil.shortname:
            return True
        ret = origvisitdirfn(dir)
        if ret:
            return ret
        lf = lfutil.splitstandin(dir)
        if lf is None:
            return False
        return origvisitdirfn(lf)

    m.visitdir = lfvisitdirfn

    for f in ctx.walk(m):
        with cmdutil.makefileobj(ctx, opts.get('output'), pathname=f) as fp:
            lf = lfutil.splitstandin(f)

                if not lfutil.inusercache(repo.ui, hash):
                    store = storefactory.openstore(repo)
                    success, missing = store.get([(lf, hash)])
                    if len(success) != 1:
                        raise error.Abort(
                            _(
                                'largefile %s is not in cache and could not be '
                                'downloaded'
                            )
                            % lf
                        )
                path = lfutil.usercachepath(repo.ui, hash)
                with open(path, "rb") as fpin:
                    for chunk in util.filechunkiter(fpin):
                        fp.write(chunk)
        err = 0
    return err


@eh.wrapfunction(merge, 'update')
def mergeupdate(orig, repo, node, branchmerge, force, *args, **kwargs):
    matcher = kwargs.get(r'matcher', None)
    # note if this is a partial update
    partial = matcher and not matcher.always()
    with repo.wlock():
        # branch |       |         |

        #
        # (*) don't care
        # (*1) deprecated, but used internally (e.g: "rebase --collapse")

        lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
        unsure, s = lfdirstate.status(
            matchmod.always(),
            subrepos=[],
            ignored=False,
            clean=True,
            unknown=False,
        )
        oldclean = set(s.clean)
        pctx = repo['.']
        dctx = repo[node]
        for lfile in unsure + s.modified:
            lfileabs = repo.wvfs.join(lfile)
            if not repo.wvfs.exists(lfileabs):
                continue
            lfhash = lfutil.hashfile(lfileabs)
            standin = lfutil.standin(lfile)
            lfutil.writestandin(
                repo, standin, lfhash, lfutil.getexecutable(lfileabs)
            )
            if standin in pctx and lfhash == lfutil.readasstandin(
                pctx[standin]
            ):
                oldclean.add(lfile)
        for lfile in s.added:
            fstandin = lfutil.standin(lfile)
            if fstandin not in dctx:
                # in this case, content of standin file is meaningless

        lfdirstate.write()

        if branchmerge or force or partial:
            filelist.extend(s.deleted + s.removed)

        lfcommands.updatelfiles(
            repo.ui, repo, filelist=filelist, normallookup=partial
        )

        return result


@eh.wrapfunction(scmutil, 'marktouched')
def scmutilmarktouched(orig, repo, files, *args, **kwargs):
    result = orig(repo, files, *args, **kwargs)

    for f in files:
        lf = lfutil.splitstandin(f)
        if lf is not None:
            filelist.append(lf)
    if filelist:
        lfcommands.updatelfiles(
            repo.ui,
            repo,
            filelist=filelist,
            printmessage=False,
            normallookup=True,
        )

    return result


@eh.wrapfunction(upgrade, 'preservedrequirements')
@eh.wrapfunction(upgrade, 'supporteddestrequirements')
def upgraderequirements(orig, repo):
    reqs = orig(repo)
    if 'largefiles' in repo.requirements:
        reqs.add('largefiles')
    return reqs


_lfscheme = 'largefile://'


@eh.wrapfunction(urlmod, 'open')
def openlargefile(orig, ui, url_, data=None):
    if url_.startswith(_lfscheme):
        if data:
            msg = "cannot use data on a 'largefile://' url"
            raise error.ProgrammingError(msg)
        lfid = url_[len(_lfscheme) :]
        return storefactory.getlfile(ui, lfid)
    else:
        return orig(ui, url_, data=data)