view hgext/largefiles/uisetup.py @ 16093:7e30f5f2285f

merge: refactor unknown file conflict checking

Previously, we would do a full working directory walk including
unknown files to perform a merge. In many cases, this was painful
because unknown files greatly outnumbered tracked files and generally
had no useful effect on the merge.

Here we instead wait until we find a file in the destination that's
not tracked locally and detect if it exists and is not ignored. This
is usually cheaper but can be -more- expensive in the case where we're
adding a huge number of files. On the other hand, the cost of statting
the new files should be dwarfed by the cost of eventually writing
them.

In this version, case collisions are detected implicitly by
os.path.exists and wctx[f] lookup.

# 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, \
    httprepo, localrepo, merge, sshrepo, sshserver, wireproto
from mercurial.i18n import _
from mercurial.hgweb import hgweb_mod, protocol

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.override_add)
    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.override_addremove)
    entry = extensions.wrapcommand(commands.table, 'remove',
                                   overrides.override_remove)
    entry = extensions.wrapcommand(commands.table, 'forget',
                                   overrides.override_forget)
    entry = extensions.wrapcommand(commands.table, 'status',
                                   overrides.override_status)
    entry = extensions.wrapcommand(commands.table, 'log',
                                   overrides.override_log)
    entry = extensions.wrapcommand(commands.table, 'rollback',
                                   overrides.override_rollback)
    entry = extensions.wrapcommand(commands.table, 'verify',
                                   overrides.override_verify)

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

    entry = extensions.wrapcommand(commands.table, 'update',
                                   overrides.override_update)
    entry = extensions.wrapcommand(commands.table, 'pull',
                                   overrides.override_pull)
    entry = extensions.wrapfunction(merge, '_checkunknownfile',
                                    overrides.override_checkunknownfile)
    entry = extensions.wrapfunction(merge, 'manifestmerge',
                                    overrides.override_manifestmerge)
    entry = extensions.wrapfunction(filemerge, 'filemerge',
                                    overrides.override_filemerge)
    entry = extensions.wrapfunction(cmdutil, 'copy',
                                    overrides.override_copy)

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

    # 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.hg_update)
    extensions.wrapfunction(hg, '_update', overrides.hg_update)
    extensions.wrapfunction(hg, 'clean', overrides.hg_clean)
    extensions.wrapfunction(hg, 'merge', overrides.hg_merge)

    extensions.wrapfunction(archival, 'archive', overrides.override_archive)
    extensions.wrapfunction(cmdutil, 'bailifchanged',
                            overrides.override_bailifchanged)

    # 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'

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

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

    # can't do this in reposetup because it needs to have happened before
    # wirerepo.__init__ is called
    proto.ssh_oldcallstream = sshrepo.sshrepository._callstream
    proto.http_oldcallstream = httprepo.httprepository._callstream
    sshrepo.sshrepository._callstream = proto.sshrepo_callstream
    httprepo.httprepository._callstream = proto.httprepo_callstream

    # 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.override_fetch)
        if name == 'purge':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'purge',
                overrides.override_purge)
        if name == 'rebase':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'rebase',
                overrides.override_rebase)
        if name == 'transplant':
            extensions.wrapcommand(getattr(module, 'cmdtable'), 'transplant',
                overrides.override_transplant)