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

chg: make is possible to call by default an hg binary located next to chg...

chg: make is possible to call by default an hg binary located next to chg When a single version of hg is in use and it's in the PATH, using chg is just a matter of calling chg. But when there are multiple installations of hg+chg around, and hg is referred to with an absolute path, using chg is more annoying because it requires both changing the invocation to hg to use chg, but also setting CHGHG. Currently, we set HGPATH when we build chg to remove the need to set CHGHG in the previous paragraph. But that means chg now hardcodes its installation path, which makes the installation not relocatable. Hence this proposal to make chg find ./hg relative to itself (as opposed to CHGHG=./hg which find hg relative to cwd). This only works on linux as written, but since it's opt-in, it sounds fine. Tested by hand, as I'm not sure how else to test this. Differential Revision: https://phab.mercurial-scm.org/D9006

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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)
				)