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

windows: disable pager when packaged with py2exe...

windows: disable pager when packaged with py2exe With Windows and py3, all output that got directed to the pager was lost. It can be worked around by the user piping to `more`, but that's easy to forget, and can be dangerous if `hg diff` or similar incorrectly shows no changes. The problem appears to be the new WindowsConsoleIO in py3.6[1]. We've worked around it with PyOxidizer by setting the `Py_LegacyWindowsStdioFlag` interpreter option, and worked around it with `hg.bat` and `exewrapper.c` by internally setting `PYTHONLEGACYWINDOWSSTDIO=1`. Unfortunately, py2exe doesn't appear to be able to set the interpreter option, and somehow seems to also ignore the environment variable. The latter isn't a good fix anyway, since setting it in the environment would affect other python programs too. We can't install a global config for this because a config closer to the user (e.g. from before pager was turned on by default) can override it. [1] https://peps.python.org/pep-0528/ Differential Revision: https://phab.mercurial-scm.org/D12556

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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_merge_commits is a hook to check new changesets for merge commits.

      Merge commits are allowed only between different branches, i.e. merging

      a feature branch into the main development branch. This can be used to

      enforce policies for linear commit histories.

      Usage:

        [hooks]

        pretxnchangegroup.reject_merge_commits = \

          python:hgext.hooklib.reject_merge_commits.hook

      """

      from mercurial.i18n import _

      from mercurial import (

          error,

          pycompat,

      )

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

          if hooktype != b"pretxnchangegroup":

              raise error.Abort(

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

              )

          ctx = repo.unfiltered()[node]

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

              rev = repo[rev]

              parents = rev.parents()

              if len(parents) < 2:

                  continue

              if all(repo[p].branch() == rev.branch() for p in parents):

                  raise error.Abort(

                      _(

                          b'%s rejected as merge on the same branch. '

                          b'Please consider rebase.'

                      )

                      % rev

                  )

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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_merge_commits is a hook to check new changesets for merge commits.
				Merge commits are allowed only between different branches, i.e. merging
				a feature branch into the main development branch. This can be used to
				enforce policies for linear commit histories.

				Usage:
				[hooks]
				pretxnchangegroup.reject_merge_commits = \
				python:hgext.hooklib.reject_merge_commits.hook
				"""


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


				def hook(ui, repo, hooktype, node=None, **kwargs):
				if hooktype != b"pretxnchangegroup":
				raise error.Abort(
				_(b'Unsupported hook type %r') % pycompat.bytestr(hooktype)
				)

				ctx = repo.unfiltered()[node]
				for rev in repo.changelog.revs(start=ctx.rev()):
				rev = repo[rev]
				parents = rev.parents()
				if len(parents) < 2:
				continue
				if all(repo[p].branch() == rev.branch() for p in parents):
				raise error.Abort(
				_(
				b'%s rejected as merge on the same branch. '
				b'Please consider rebase.'
				)
				% rev
				)