|
|
# destutil.py - Mercurial utility function for command destination
|
|
|
#
|
|
|
# Copyright Matt Mackall <mpm@selenic.com> and other
|
|
|
#
|
|
|
# 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 (
|
|
|
bookmarks,
|
|
|
error,
|
|
|
obsolete,
|
|
|
)
|
|
|
|
|
|
def _destupdatevalidate(repo, rev, clean, check):
|
|
|
"""validate that the destination comply to various rules
|
|
|
|
|
|
This exists as its own function to help wrapping from extensions."""
|
|
|
wc = repo[None]
|
|
|
p1 = wc.p1()
|
|
|
if not clean:
|
|
|
# Check that the update is linear.
|
|
|
#
|
|
|
# Mercurial do not allow update-merge for non linear pattern
|
|
|
# (that would be technically possible but was considered too confusing
|
|
|
# for user a long time ago)
|
|
|
#
|
|
|
# See mercurial.merge.update for details
|
|
|
if p1.rev() not in repo.changelog.ancestors([rev], inclusive=True):
|
|
|
dirty = wc.dirty(missing=True)
|
|
|
foreground = obsolete.foreground(repo, [p1.node()])
|
|
|
if not repo[rev].node() in foreground:
|
|
|
if dirty:
|
|
|
msg = _("uncommitted changes")
|
|
|
hint = _("commit and merge, or update --clean to"
|
|
|
" discard changes")
|
|
|
raise error.UpdateAbort(msg, hint=hint)
|
|
|
elif not check: # destination is not a descendant.
|
|
|
msg = _("not a linear update")
|
|
|
hint = _("merge or update --check to force update")
|
|
|
raise error.UpdateAbort(msg, hint=hint)
|
|
|
|
|
|
def _destupdateobs(repo, clean, check):
|
|
|
"""decide of an update destination from obsolescence markers"""
|
|
|
node = None
|
|
|
wc = repo[None]
|
|
|
p1 = wc.p1()
|
|
|
movemark = None
|
|
|
|
|
|
if p1.obsolete() and not p1.children():
|
|
|
# allow updating to successors
|
|
|
successors = obsolete.successorssets(repo, p1.node())
|
|
|
|
|
|
# behavior of certain cases is as follows,
|
|
|
#
|
|
|
# divergent changesets: update to highest rev, similar to what
|
|
|
# is currently done when there are more than one head
|
|
|
# (i.e. 'tip')
|
|
|
#
|
|
|
# replaced changesets: same as divergent except we know there
|
|
|
# is no conflict
|
|
|
#
|
|
|
# pruned changeset: no update is done; though, we could
|
|
|
# consider updating to the first non-obsolete parent,
|
|
|
# similar to what is current done for 'hg prune'
|
|
|
|
|
|
if successors:
|
|
|
# flatten the list here handles both divergent (len > 1)
|
|
|
# and the usual case (len = 1)
|
|
|
successors = [n for sub in successors for n in sub]
|
|
|
|
|
|
# get the max revision for the given successors set,
|
|
|
# i.e. the 'tip' of a set
|
|
|
node = repo.revs('max(%ln)', successors).first()
|
|
|
if bookmarks.isactivewdirparent(repo):
|
|
|
movemark = repo['.'].node()
|
|
|
return node, movemark, None
|
|
|
|
|
|
def _destupdatebook(repo, clean, check):
|
|
|
"""decide on an update destination from active bookmark"""
|
|
|
# we also move the active bookmark, if any
|
|
|
activemark = None
|
|
|
node, movemark = bookmarks.calculateupdate(repo.ui, repo, None)
|
|
|
if node is not None:
|
|
|
activemark = node
|
|
|
return node, movemark, activemark
|
|
|
|
|
|
def _destupdatebranch(repo, clean, check):
|
|
|
"""decide on an update destination from current branch"""
|
|
|
wc = repo[None]
|
|
|
movemark = node = None
|
|
|
try:
|
|
|
node = repo.revs('max(.::(head() and branch(%s)))'
|
|
|
, wc.branch()).first()
|
|
|
if bookmarks.isactivewdirparent(repo):
|
|
|
movemark = repo['.'].node()
|
|
|
except error.RepoLookupError:
|
|
|
if wc.branch() == 'default': # no default branch!
|
|
|
node = repo.lookup('tip') # update to tip
|
|
|
else:
|
|
|
raise error.Abort(_("branch %s not found") % wc.branch())
|
|
|
return node, movemark, None
|
|
|
|
|
|
# order in which each step should be evalutated
|
|
|
# steps are run until one finds a destination
|
|
|
destupdatesteps = ['evolution', 'bookmark', 'branch']
|
|
|
# mapping to ease extension overriding steps.
|
|
|
destupdatestepmap = {'evolution': _destupdateobs,
|
|
|
'bookmark': _destupdatebook,
|
|
|
'branch': _destupdatebranch,
|
|
|
}
|
|
|
|
|
|
def destupdate(repo, clean=False, check=False):
|
|
|
"""destination for bare update operation
|
|
|
|
|
|
return (rev, movemark, activemark)
|
|
|
|
|
|
- rev: the revision to update to,
|
|
|
- movemark: node to move the active bookmark from
|
|
|
(cf bookmark.calculate update),
|
|
|
- activemark: a bookmark to activate at the end of the update.
|
|
|
"""
|
|
|
node = movemark = activemark = None
|
|
|
|
|
|
for step in destupdatesteps:
|
|
|
node, movemark, activemark = destupdatestepmap[step](repo, clean, check)
|
|
|
if node is not None:
|
|
|
break
|
|
|
rev = repo[node].rev()
|
|
|
|
|
|
_destupdatevalidate(repo, rev, clean, check)
|
|
|
|
|
|
return rev, movemark, activemark
|
|
|
|
|
|
msgdestmerge = {
|
|
|
# too many matching divergent bookmark
|
|
|
'toomanybookmarks':
|
|
|
{'merge':
|
|
|
(_("multiple matching bookmarks to merge -"
|
|
|
" please merge with an explicit rev or bookmark"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
'rebase':
|
|
|
(_("multiple matching bookmarks to rebase -"
|
|
|
" please rebase to an explicit rev or bookmark"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
},
|
|
|
# no other matching divergent bookmark
|
|
|
'nootherbookmarks':
|
|
|
{'merge':
|
|
|
(_("no matching bookmark to merge - "
|
|
|
"please merge with an explicit rev or bookmark"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
'rebase':
|
|
|
(_("no matching bookmark to rebase - "
|
|
|
"please rebase to an explicit rev or bookmark"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
},
|
|
|
# branch have too many unbookmarked heads, no obvious destination
|
|
|
'toomanyheads':
|
|
|
{'merge':
|
|
|
(_("branch '%s' has %d heads - please merge with an explicit rev"),
|
|
|
_("run 'hg heads .' to see heads")),
|
|
|
'rebase':
|
|
|
(_("branch '%s' has %d heads - please rebase to an explicit rev"),
|
|
|
_("run 'hg heads .' to see heads")),
|
|
|
},
|
|
|
# branch have no other unbookmarked heads
|
|
|
'bookmarkedheads':
|
|
|
{'merge':
|
|
|
(_("heads are bookmarked - please merge with an explicit rev"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
'rebase':
|
|
|
(_("heads are bookmarked - please rebase to an explicit rev"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
},
|
|
|
# branch have just a single heads, but there is other branches
|
|
|
'nootherbranchheads':
|
|
|
{'merge':
|
|
|
(_("branch '%s' has one head - please merge with an explicit rev"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
'rebase':
|
|
|
(_("branch '%s' has one head - please rebase to an explicit rev"),
|
|
|
_("run 'hg heads' to see all heads")),
|
|
|
},
|
|
|
# repository have a single head
|
|
|
'nootherheads':
|
|
|
{'merge':
|
|
|
(_('nothing to merge'),
|
|
|
None),
|
|
|
'rebase':
|
|
|
(_('nothing to rebase'),
|
|
|
None),
|
|
|
},
|
|
|
# repository have a single head and we are not on it
|
|
|
'nootherheadsbehind':
|
|
|
{'merge':
|
|
|
(_('nothing to merge'),
|
|
|
_("use 'hg update' instead")),
|
|
|
'rebase':
|
|
|
(_('nothing to rebase'),
|
|
|
_("use 'hg update' instead")),
|
|
|
},
|
|
|
# We are not on a head
|
|
|
'notatheads':
|
|
|
{'merge':
|
|
|
(_('working directory not at a head revision'),
|
|
|
_("use 'hg update' or merge with an explicit revision")),
|
|
|
'rebase':
|
|
|
(_('working directory not at a head revision'),
|
|
|
_("use 'hg update' or rebase to an explicit revision"))
|
|
|
},
|
|
|
'emptysourceset':
|
|
|
{'merge':
|
|
|
(_('source set is empty'),
|
|
|
None),
|
|
|
'rebase':
|
|
|
(_('source set is empty'),
|
|
|
None),
|
|
|
},
|
|
|
'multiplebranchessourceset':
|
|
|
{'merge':
|
|
|
(_('source set is rooted in multiple branches'),
|
|
|
None),
|
|
|
'rebase':
|
|
|
(_('rebaseset is rooted in multiple named branches'),
|
|
|
_('specify an explicit destination with --dest')),
|
|
|
},
|
|
|
}
|
|
|
|
|
|
def _destmergebook(repo, action='merge', sourceset=None):
|
|
|
"""find merge destination in the active bookmark case"""
|
|
|
node = None
|
|
|
bmheads = repo.bookmarkheads(repo._activebookmark)
|
|
|
curhead = repo[repo._activebookmark].node()
|
|
|
if len(bmheads) == 2:
|
|
|
if curhead == bmheads[0]:
|
|
|
node = bmheads[1]
|
|
|
else:
|
|
|
node = bmheads[0]
|
|
|
elif len(bmheads) > 2:
|
|
|
msg, hint = msgdestmerge['toomanybookmarks'][action]
|
|
|
raise error.ManyMergeDestAbort(msg, hint=hint)
|
|
|
elif len(bmheads) <= 1:
|
|
|
msg, hint = msgdestmerge['nootherbookmarks'][action]
|
|
|
raise error.NoMergeDestAbort(msg, hint=hint)
|
|
|
assert node is not None
|
|
|
return node
|
|
|
|
|
|
def _destmergebranch(repo, action='merge', sourceset=None, onheadcheck=True):
|
|
|
"""find merge destination based on branch heads"""
|
|
|
node = None
|
|
|
|
|
|
if sourceset is None:
|
|
|
sourceset = [repo[repo.dirstate.p1()].rev()]
|
|
|
branch = repo.dirstate.branch()
|
|
|
elif not sourceset:
|
|
|
msg, hint = msgdestmerge['emptysourceset'][action]
|
|
|
raise error.NoMergeDestAbort(msg, hint=hint)
|
|
|
else:
|
|
|
branch = None
|
|
|
for ctx in repo.set('roots(%ld::%ld)', sourceset, sourceset):
|
|
|
if branch is not None and ctx.branch() != branch:
|
|
|
msg, hint = msgdestmerge['multiplebranchessourceset'][action]
|
|
|
raise error.ManyMergeDestAbort(msg, hint=hint)
|
|
|
branch = ctx.branch()
|
|
|
|
|
|
bheads = repo.branchheads(branch)
|
|
|
onhead = repo.revs('%ld and %ln', sourceset, bheads)
|
|
|
if onheadcheck and not onhead:
|
|
|
# Case A: working copy if not on a head. (merge only)
|
|
|
#
|
|
|
# This is probably a user mistake We bailout pointing at 'hg update'
|
|
|
if len(repo.heads()) <= 1:
|
|
|
msg, hint = msgdestmerge['nootherheadsbehind'][action]
|
|
|
else:
|
|
|
msg, hint = msgdestmerge['notatheads'][action]
|
|
|
raise error.Abort(msg, hint=hint)
|
|
|
# remove heads descendants of source from the set
|
|
|
bheads = list(repo.revs('%ln - (%ld::)', bheads, sourceset))
|
|
|
# filters out bookmarked heads
|
|
|
nbhs = list(repo.revs('%ld - bookmark()', bheads))
|
|
|
if len(nbhs) > 1:
|
|
|
# Case B: There is more than 1 other anonymous heads
|
|
|
#
|
|
|
# This means that there will be more than 1 candidate. This is
|
|
|
# ambiguous. We abort asking the user to pick as explicit destination
|
|
|
# instead.
|
|
|
msg, hint = msgdestmerge['toomanyheads'][action]
|
|
|
msg %= (branch, len(bheads) + 1)
|
|
|
raise error.ManyMergeDestAbort(msg, hint=hint)
|
|
|
elif not nbhs:
|
|
|
# Case B: There is no other anonymous heads
|
|
|
#
|
|
|
# This means that there is no natural candidate to merge with.
|
|
|
# We abort, with various messages for various cases.
|
|
|
if bheads:
|
|
|
msg, hint = msgdestmerge['bookmarkedheads'][action]
|
|
|
elif len(repo.heads()) > 1:
|
|
|
msg, hint = msgdestmerge['nootherbranchheads'][action]
|
|
|
msg %= branch
|
|
|
elif not onhead:
|
|
|
# if 'onheadcheck == False' (rebase case),
|
|
|
# this was not caught in Case A.
|
|
|
msg, hint = msgdestmerge['nootherheadsbehind'][action]
|
|
|
else:
|
|
|
msg, hint = msgdestmerge['nootherheads'][action]
|
|
|
raise error.NoMergeDestAbort(msg, hint=hint)
|
|
|
else:
|
|
|
node = nbhs[0]
|
|
|
assert node is not None
|
|
|
return node
|
|
|
|
|
|
def destmerge(repo, action='merge', sourceset=None, onheadcheck=True):
|
|
|
"""return the default destination for a merge
|
|
|
|
|
|
(or raise exception about why it can't pick one)
|
|
|
|
|
|
:action: the action being performed, controls emitted error message
|
|
|
"""
|
|
|
if repo._activebookmark:
|
|
|
node = _destmergebook(repo, action=action, sourceset=sourceset)
|
|
|
else:
|
|
|
node = _destmergebranch(repo, action=action, sourceset=sourceset,
|
|
|
onheadcheck=onheadcheck)
|
|
|
return repo[node].rev()
|
|
|
|
|
|
histeditdefaultrevset = 'reverse(only(.) and not public() and not ::merge())'
|
|
|
|
|
|
def desthistedit(ui, repo):
|
|
|
"""Default base revision to edit for `hg histedit`."""
|
|
|
# Avoid cycle: scmutil -> revset -> destutil
|
|
|
from . import scmutil
|
|
|
|
|
|
default = ui.config('histedit', 'defaultrev', histeditdefaultrevset)
|
|
|
if default:
|
|
|
revs = scmutil.revrange(repo, [default])
|
|
|
if revs:
|
|
|
# The revset supplied by the user may not be in ascending order nor
|
|
|
# take the first revision. So do this manually.
|
|
|
revs.sort()
|
|
|
return revs.first()
|
|
|
|
|
|
return None
|
|
|
|
|
|
def _statusotherbook(ui, repo):
|
|
|
bmheads = repo.bookmarkheads(repo._activebookmark)
|
|
|
curhead = repo[repo._activebookmark].node()
|
|
|
if repo.revs('%n and parents()', curhead):
|
|
|
# we are on the active bookmark
|
|
|
bmheads = [b for b in bmheads if curhead != b]
|
|
|
if bmheads:
|
|
|
msg = _('%i other divergent bookmarks for "%s"\n')
|
|
|
ui.status(msg % (len(bmheads), repo._activebookmark))
|
|
|
|
|
|
def _statusotherbranchheads(ui, repo):
|
|
|
currentbranch = repo.dirstate.branch()
|
|
|
heads = repo.branchheads(currentbranch)
|
|
|
l = len(heads)
|
|
|
if repo.revs('%ln and parents()', heads):
|
|
|
# we are on a head
|
|
|
otherheads = repo.revs('%ln - parents()', heads)
|
|
|
if otherheads and l != len(otherheads):
|
|
|
ui.status(_('%i other heads for branch "%s"\n') %
|
|
|
(len(otherheads), currentbranch))
|
|
|
|
|
|
def statusotherdests(ui, repo):
|
|
|
"""Print message about other head"""
|
|
|
# XXX we should probably include a hint:
|
|
|
# - about what to do
|
|
|
# - how to see such heads
|
|
|
if repo._activebookmark:
|
|
|
_statusotherbook(ui, repo)
|
|
|
else:
|
|
|
_statusotherbranchheads(ui, repo)
|
|
|
|
