annotate hgext/largefiles/uisetup.py @ 17601:6e2ab601be3f stable

largefiles: delegate to the wrapped clone command

This allows the wrapped command's validation code to run (which is currently
only to ensure 'noupdate' and 'updaterev' aren't both specified), the
copy/pasted unpacking of hg.clone() args to be removed, and any future changes
to the base command (however unlikely) to be inherited by largefiles.

Unfortunately, the command override can't be swapped entirely for an hg.clone()
override because the extra --all-largefiles arg needs to be injected.  It also
isn't enough to call the wrapped clone command and leave the caching code after
it, because the file caching code needs access to the destination repo, which is
only available from hg.clone().  An alternative would be to use the dest path in
the clone command override to re-obtain a reference to the repo.

A slight deviation from the regular hg.clone() function is that the repo is NOT
deleted if the caching fails, but that was also the previous behavior.  Maybe it
should for consistency?

# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''setup for largefiles extension: uisetup'''

from mercurial import archival, cmdutil, commands, extensions, filemerge, hg, \
    httppeer, localrepo, merge, sshpeer, sshserver, wireproto
from mercurial.i18n import _
from mercurial.hgweb import hgweb_mod, protocol, webcommands
from mercurial.subrepo import hgsubrepo

import overrides
import proto

def uisetup(ui):
    # Disable auto-status for some commands which assume that all
    # files in the result are under Mercurial's control

    entry = extensions.wrapcommand(commands.table, 'add',
                                   overrides.overrideadd)
    addopt = [('', 'large', None, _('add as largefile')),
              ('', 'normal', None, _('add as normal file')),
              ('', 'lfsize', '', _('add all files above this size '
                                   '(in megabytes) as largefiles '
                                   '(default: 10)'))]
    entry[1].extend(addopt)

    entry = extensions.wrapcommand(commands.table, 'addremove',
            overrides.overrideaddremove)
    entry = extensions.wrapcommand(commands.table, 'remove',
                                   overrides.overrideremove)
    entry = extensions.wrapcommand(commands.table, 'forget',
                                   overrides.overrideforget)

    # Subrepos call status function
    entry = extensions.wrapcommand(commands.table, 'status',
                                   overrides.overridestatus)
    entry = extensions.wrapfunction(hgsubrepo, 'status',
                                    overrides.overridestatusfn)

    entry = extensions.wrapcommand(commands.table, 'log',
                                   overrides.overridelog)
    entry = extensions.wrapcommand(commands.table, 'rollback',
                                   overrides.overriderollback)
    entry = extensions.wrapcommand(commands.table, 'verify',
                                   overrides.overrideverify)

    verifyopt = [('', 'large', None, _('verify largefiles')),
                 ('', 'lfa', None,
                     _('verify all revisions of largefiles not just current')),
                 ('', 'lfc', None,
                     _('verify largefile contents not just existence'))]
    entry[1].extend(verifyopt)

    entry = extensions.wrapcommand(commands.table, 'outgoing',
        overrides.overrideoutgoing)
    outgoingopt = [('', 'large', None, _('display outgoing largefiles'))]
    entry[1].extend(outgoingopt)
    entry = extensions.wrapcommand(commands.table, 'summary',
                                   overrides.overridesummary)
    summaryopt = [('', 'large', None, _('display outgoing largefiles'))]
    entry[1].extend(summaryopt)

    entry = extensions.wrapcommand(commands.table, 'update',
                                   overrides.overrideupdate)
    entry = extensions.wrapcommand(commands.table, 'pull',
                                   overrides.overridepull)
    pullopt = [('', 'all-largefiles', None,
                 _('download all pulled versions of largefiles'))]
    entry[1].extend(pullopt)
    entry = extensions.wrapcommand(commands.table, 'clone',
                                   overrides.overrideclone)
    cloneopt = [('', 'all-largefiles', None,
                 _('download all versions of all largefiles'))]
    entry[1].extend(cloneopt)
    entry = extensions.wrapfunction(hg, 'clone', overrides.hgclone)

    entry = extensions.wrapcommand(commands.table, 'cat',
                                   overrides.overridecat)
    entry = extensions.wrapfunction(merge, '_checkunknownfile',
                                    overrides.overridecheckunknownfile)
    entry = extensions.wrapfunction(merge, 'manifestmerge',
                                    overrides.overridemanifestmerge)
    entry = extensions.wrapfunction(filemerge, 'filemerge',
                                    overrides.overridefilemerge)
    entry = extensions.wrapfunction(cmdutil, 'copy',
                                    overrides.overridecopy)

    # Summary calls dirty on the subrepos
    entry = extensions.wrapfunction(hgsubrepo, 'dirty',
                                    overrides.overridedirty)

    # Backout calls revert so we need to override both the command and the
    # function
    entry = extensions.wrapcommand(commands.table, 'revert',
                                   overrides.overriderevert)
    entry = extensions.wrapfunction(commands, 'revert',
                                    overrides.overriderevert)

    # clone uses hg._update instead of hg.update even though they are the
    # same function... so wrap both of them)
    extensions.wrapfunction(hg, 'update', overrides.hgupdate)
    extensions.wrapfunction(hg, '_update', overrides.hgupdate)
    extensions.wrapfunction(hg, 'clean', overrides.hgclean)
    extensions.wrapfunction(hg, 'merge', overrides.hgmerge)

    extensions.wrapfunction(archival, 'archive', overrides.overridearchive)
    extensions.wrapfunction(hgsubrepo, 'archive', overrides.hgsubrepoarchive)
    extensions.wrapfunction(cmdutil, 'bailifchanged',
                            overrides.overridebailifchanged)

    # create the new wireproto commands ...
    wireproto.commands['putlfile'] = (proto.putlfile, 'sha')
    wireproto.commands['getlfile'] = (proto.getlfile, 'sha')
    wireproto.commands['statlfile'] = (proto.statlfile, 'sha')

    # ... and wrap some existing ones
    wireproto.commands['capabilities'] = (proto.capabilities, '')
    wireproto.commands['heads'] = (proto.heads, '')
    wireproto.commands['lheads'] = (wireproto.heads, '')

    # make putlfile behave the same as push and {get,stat}lfile behave
    # the same as pull w.r.t. permissions checks
    hgweb_mod.perms['putlfile'] = 'push'
    hgweb_mod.perms['getlfile'] = 'pull'
    hgweb_mod.perms['statlfile'] = 'pull'

    extensions.wrapfunction(webcommands, 'decodepath', overrides.decodepath)

    # the hello wireproto command uses wireproto.capabilities, so it won't see
    # our largefiles capability unless we replace the actual function as well.
    proto.capabilitiesorig = wireproto.capabilities
    wireproto.capabilities = proto.capabilities

    # these let us reject non-largefiles clients and make them display
    # our error messages
    protocol.webproto.refuseclient = proto.webprotorefuseclient
    sshserver.sshserver.refuseclient = proto.sshprotorefuseclient

    # can't do this in reposetup because it needs to have happened before
    # wirerepo.__init__ is called
    proto.ssholdcallstream = sshpeer.sshpeer._callstream
    proto.httpoldcallstream = httppeer.httppeer._callstream
    sshpeer.sshpeer._callstream = proto.sshrepocallstream
    httppeer.httppeer._callstream = proto.httprepocallstream

    # don't die on seeing a repo with the largefiles requirement
    localrepo.localrepository.supported |= set(['largefiles'])

    # override some extensions' stuff as well
    for name, module in extensions.extensions():
        if name == 'fetch':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'fetch',
                overrides.overridefetch)
        if name == 'purge':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'purge',
                overrides.overridepurge)
        if name == 'rebase':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'rebase',
                overrides.overriderebase)
        if name == 'transplant':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'transplant',
                overrides.overridetransplant)