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# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''share a common history between several working directories'''
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from mercurial.i18n import _
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from mercurial import hg, commands, util
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def share(ui, source, dest=None, noupdate=False):
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"""create a new shared repository
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Initialize a new repository and working directory that shares its
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history with another repository.
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.. note::
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using rollback or extensions that destroy/modify history (mq,
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rebase, etc.) can cause considerable confusion with shared
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clones. In particular, if two shared clones are both updated to
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the same changeset, and one of them destroys that changeset
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with rollback, the other clone will suddenly stop working: all
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operations will fail with "abort: working directory has unknown
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parent". The only known workaround is to use debugsetparents on
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the broken clone to reset it to a changeset that still exists
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(e.g. tip).
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"""
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return hg.share(ui, source, dest, not noupdate)
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def unshare(ui, repo):
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"""convert a shared repository to a normal one
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Copy the store data to the repo and remove the sharedpath data.
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"""
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if repo.sharedpath == repo.path:
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raise util.Abort(_("this is not a shared repo"))
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destlock = lock = None
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lock = repo.lock()
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try:
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# we use locks here because if we race with commit, we
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# can end up with extra data in the cloned revlogs that's
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# not pointed to by changesets, thus causing verify to
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# fail
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destlock = hg.copystore(ui, repo, repo.path)
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sharefile = repo.join('sharedpath')
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util.rename(sharefile, sharefile + '.old')
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repo.requirements.discard('sharedpath')
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repo._writerequirements()
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finally:
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destlock and destlock.release()
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lock and lock.release()
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# update store, spath, sopener and sjoin of repo
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repo.__init__(ui, repo.root)
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cmdtable = {
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"share":
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(share,
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[('U', 'noupdate', None, _('do not create a working copy'))],
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_('[-U] SOURCE [DEST]')),
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"unshare":
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(unshare,
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[],
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''),
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}
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commands.norepo += " share"
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