upstream/mercurial-mirror Files · hgext/hooklib/reject_new_heads.py

phabricator: refactor `phabread` to write all patches at once...

phabricator: refactor `phabread` to write all patches at once This will be necessary to create a first class `phabimport` command. That command requires a transaction, and will import all named patches within a single transaction. But if Phabricator queries also happen within the transaction, that leaves open the chance that an exception is raised, the transaction is abandoned, and the next command that is run will complain about needing to run `hg recover`. Differential Revision: https://phab.mercurial-scm.org/D8135

Joerg Sonnenberger - - Load All Authors

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             reject_new_heads.py
        
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      # Copyright 2020 Joerg Sonnenberger <joerg@bec.de>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      """reject_new_heads is a hook to check that branches touched by new changesets

      have at most one open head. It can be used to enforce policies for

      merge-before-push or rebase-before-push. It does not handle pre-existing

      hydras.

      Usage:

        [hooks]

        pretxnclose.reject_new_heads = \

          python:hgext.hooklib.reject_new_heads.hook

      """

      from __future__ import absolute_import

      from mercurial.i18n import _

      from mercurial import (

          error,

          pycompat,

      )

      def hook(ui, repo, hooktype, node=None, **kwargs):

          if hooktype != b"pretxnclose":

              raise error.Abort(

                  _(b'Unsupported hook type %r') % pycompat.bytestr(hooktype)

              )

          ctx = repo.unfiltered()[node]

          branches = set()

          for rev in repo.changelog.revs(start=ctx.rev()):

              rev = repo[rev]

              branches.add(rev.branch())

          for branch in branches:

              if len(repo.revs("head() and not closed() and branch(%s)", branch)) > 1:

                  raise error.Abort(

                      _(b'Changes on branch %r resulted in multiple heads')

                      % pycompat.bytestr(branch)

                  )

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				# Copyright 2020 Joerg Sonnenberger <joerg@bec.de>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				"""reject_new_heads is a hook to check that branches touched by new changesets
				have at most one open head. It can be used to enforce policies for
				merge-before-push or rebase-before-push. It does not handle pre-existing
				hydras.

				Usage:
				[hooks]
				pretxnclose.reject_new_heads = \
				python:hgext.hooklib.reject_new_heads.hook
				"""

				from __future__ import absolute_import

				from mercurial.i18n import _
				from mercurial import (
				error,
				pycompat,
				)


				def hook(ui, repo, hooktype, node=None, **kwargs):
				if hooktype != b"pretxnclose":
				raise error.Abort(
				_(b'Unsupported hook type %r') % pycompat.bytestr(hooktype)
				)
				ctx = repo.unfiltered()[node]
				branches = set()
				for rev in repo.changelog.revs(start=ctx.rev()):
				rev = repo[rev]
				branches.add(rev.branch())
				for branch in branches:
				if len(repo.revs("head() and not closed() and branch(%s)", branch)) > 1:
				raise error.Abort(
				_(b'Changes on branch %r resulted in multiple heads')
				% pycompat.bytestr(branch)
				)