view mercurial/rewriteutil.py @ 43965:8a81fa44f7bb

match: don't util.normpath() cwd

The problem here is that `util.normpath()` calls `util.pconvert()`, which
switches to Unix style separators.  That results in two test failures like this
since 5685ce2ea3bf:

    --- c:/Users/Matt/hg/tests/test-globalopts.t
    +++ c:/Users/Matt/hg/tests/test-globalopts.t.err
    @@ -89,7 +89,7 @@
       [255]
       $ hg -R b ann a/a
       abort: a/a not under root '$TESTTMP/b'
    -  (consider using '--cwd b')
    +  (consider using '--cwd ..\$TESTTMP\b')
       [255]
       $ hg log
       abort: no repository found in '$TESTTMP' (.hg not found)!

    ERROR: test-globalopts.t output changed

Martin originally had `os.path.normpath()` (which *would* work here too), but
changed it during review.  He didn't remember why he thought any form is needed
here.  Most uses simply pass '' or `repo.getcwd()`, so these should generally be
in local format anyway.  It seems better if `cwd` and `root` use consistent
styles here.

Differential Revision: https://phab.mercurial-scm.org/D7725

# rewriteutil.py - utility functions for rewriting changesets
#
# Copyright 2017 Octobus <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

from .i18n import _

from . import (
    error,
    node,
    obsolete,
    revset,
)


def precheck(repo, revs, action=b'rewrite'):
    """check if revs can be rewritten
    action is used to control the error message.

    Make sure this function is called after taking the lock.
    """
    if node.nullrev in revs:
        msg = _(b"cannot %s null changeset") % action
        hint = _(b"no changeset checked out")
        raise error.Abort(msg, hint=hint)

    if len(repo[None].parents()) > 1:
        raise error.Abort(_(b"cannot %s while merging") % action)

    publicrevs = repo.revs(b'%ld and public()', revs)
    if publicrevs:
        msg = _(b"cannot %s public changesets") % action
        hint = _(b"see 'hg help phases' for details")
        raise error.Abort(msg, hint=hint)

    newunstable = disallowednewunstable(repo, revs)
    if newunstable:
        raise error.Abort(_(b"cannot %s changeset with children") % action)


def disallowednewunstable(repo, revs):
    """Checks whether editing the revs will create new unstable changesets and
    are we allowed to create them.

    To allow new unstable changesets, set the config:
        `experimental.evolution.allowunstable=True`
    """
    allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)
    if allowunstable:
        return revset.baseset()
    return repo.revs(b"(%ld::) - %ld", revs, revs)