|
|
# merge.py - directory-level update/merge handling for Mercurial
|
|
|
#
|
|
|
# Copyright 2006 Matt Mackall <mpm@selenic.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms
|
|
|
# of the GNU General Public License, incorporated herein by reference.
|
|
|
|
|
|
from node import *
|
|
|
from i18n import gettext as _
|
|
|
from demandload import *
|
|
|
demandload(globals(), "util os tempfile")
|
|
|
|
|
|
def merge3(repo, fn, my, other, p1, p2):
|
|
|
"""perform a 3-way merge in the working directory"""
|
|
|
|
|
|
def temp(prefix, node):
|
|
|
pre = "%s~%s." % (os.path.basename(fn), prefix)
|
|
|
(fd, name) = tempfile.mkstemp(prefix=pre)
|
|
|
f = os.fdopen(fd, "wb")
|
|
|
repo.wwrite(fn, fl.read(node), f)
|
|
|
f.close()
|
|
|
return name
|
|
|
|
|
|
fl = repo.file(fn)
|
|
|
base = fl.ancestor(my, other)
|
|
|
a = repo.wjoin(fn)
|
|
|
b = temp("base", base)
|
|
|
c = temp("other", other)
|
|
|
|
|
|
repo.ui.note(_("resolving %s\n") % fn)
|
|
|
repo.ui.debug(_("file %s: my %s other %s ancestor %s\n") %
|
|
|
(fn, short(my), short(other), short(base)))
|
|
|
|
|
|
cmd = (os.environ.get("HGMERGE") or repo.ui.config("ui", "merge")
|
|
|
or "hgmerge")
|
|
|
r = util.system('%s "%s" "%s" "%s"' % (cmd, a, b, c), cwd=repo.root,
|
|
|
environ={'HG_FILE': fn,
|
|
|
'HG_MY_NODE': p1,
|
|
|
'HG_OTHER_NODE': p2,
|
|
|
'HG_FILE_MY_NODE': hex(my),
|
|
|
'HG_FILE_OTHER_NODE': hex(other),
|
|
|
'HG_FILE_BASE_NODE': hex(base)})
|
|
|
if r:
|
|
|
repo.ui.warn(_("merging %s failed!\n") % fn)
|
|
|
|
|
|
os.unlink(b)
|
|
|
os.unlink(c)
|
|
|
return r
|
|
|
|
|
|
def update(repo, node, branchmerge=False, force=False, partial=None,
|
|
|
wlock=None, show_stats=True, remind=True):
|
|
|
|
|
|
overwrite = force and not branchmerge
|
|
|
forcemerge = force and branchmerge
|
|
|
|
|
|
if not wlock:
|
|
|
wlock = repo.wlock()
|
|
|
|
|
|
### check phase
|
|
|
|
|
|
pl = repo.dirstate.parents()
|
|
|
if not overwrite and pl[1] != nullid:
|
|
|
raise util.Abort(_("outstanding uncommitted merges"))
|
|
|
|
|
|
p1, p2 = pl[0], node
|
|
|
pa = repo.changelog.ancestor(p1, p2)
|
|
|
|
|
|
# is there a linear path from p1 to p2?
|
|
|
linear_path = (pa == p1 or pa == p2)
|
|
|
if branchmerge and linear_path:
|
|
|
raise util.Abort(_("there is nothing to merge, just use "
|
|
|
"'hg update' or look at 'hg heads'"))
|
|
|
|
|
|
if not overwrite and not linear_path and not branchmerge:
|
|
|
raise util.Abort(_("update spans branches, use 'hg merge' "
|
|
|
"or 'hg update -C' to lose changes"))
|
|
|
|
|
|
modified, added, removed, deleted, unknown = repo.changes()
|
|
|
if branchmerge and not forcemerge:
|
|
|
if modified or added or removed:
|
|
|
raise util.Abort(_("outstanding uncommitted changes"))
|
|
|
|
|
|
m1n = repo.changelog.read(p1)[0]
|
|
|
m2n = repo.changelog.read(p2)[0]
|
|
|
man = repo.manifest.ancestor(m1n, m2n)
|
|
|
m1 = repo.manifest.read(m1n)
|
|
|
m2 = repo.manifest.read(m2n).copy()
|
|
|
ma = repo.manifest.read(man)
|
|
|
|
|
|
if not forcemerge and not overwrite:
|
|
|
for f in unknown:
|
|
|
if f in m2:
|
|
|
t1 = repo.wread(f)
|
|
|
t2 = repo.file(f).read(m2[f])
|
|
|
if cmp(t1, t2) != 0:
|
|
|
raise util.Abort(_("'%s' already exists in the working"
|
|
|
" dir and differs from remote") % f)
|
|
|
|
|
|
# resolve the manifest to determine which files
|
|
|
# we care about merging
|
|
|
repo.ui.note(_("resolving manifests\n"))
|
|
|
repo.ui.debug(_(" overwrite %s branchmerge %s partial %s linear %s\n") %
|
|
|
(overwrite, branchmerge, partial and True or False, linear_path))
|
|
|
repo.ui.debug(_(" ancestor %s local %s remote %s\n") %
|
|
|
(short(man), short(m1n), short(m2n)))
|
|
|
|
|
|
merge = {}
|
|
|
get = {}
|
|
|
remove = []
|
|
|
|
|
|
# construct a working dir manifest
|
|
|
mw = m1.copy()
|
|
|
umap = dict.fromkeys(unknown)
|
|
|
|
|
|
for f in added + modified + unknown:
|
|
|
mw[f] = ""
|
|
|
mw.set(f, util.is_exec(repo.wjoin(f), mw.execf(f)))
|
|
|
|
|
|
for f in deleted + removed:
|
|
|
if f in mw:
|
|
|
del mw[f]
|
|
|
|
|
|
# If we're jumping between revisions (as opposed to merging),
|
|
|
# and if neither the working directory nor the target rev has
|
|
|
# the file, then we need to remove it from the dirstate, to
|
|
|
# prevent the dirstate from listing the file when it is no
|
|
|
# longer in the manifest.
|
|
|
if not partial and linear_path and f not in m2:
|
|
|
repo.dirstate.forget((f,))
|
|
|
|
|
|
# Compare manifests
|
|
|
for f, n in mw.iteritems():
|
|
|
if partial and not partial(f):
|
|
|
continue
|
|
|
if f in m2:
|
|
|
s = 0
|
|
|
|
|
|
# is the wfile new since m1, and match m2?
|
|
|
if f not in m1:
|
|
|
t1 = repo.wread(f)
|
|
|
t2 = repo.file(f).read(m2[f])
|
|
|
if cmp(t1, t2) == 0:
|
|
|
n = m2[f]
|
|
|
del t1, t2
|
|
|
|
|
|
# are files different?
|
|
|
if n != m2[f]:
|
|
|
a = ma.get(f, nullid)
|
|
|
# are both different from the ancestor?
|
|
|
if n != a and m2[f] != a:
|
|
|
repo.ui.debug(_(" %s versions differ, resolve\n") % f)
|
|
|
# merge executable bits
|
|
|
# "if we changed or they changed, change in merge"
|
|
|
a, b, c = ma.execf(f), mw.execf(f), m2.execf(f)
|
|
|
mode = ((a^b) | (a^c)) ^ a
|
|
|
merge[f] = (mode, m1.get(f, nullid), m2[f])
|
|
|
s = 1
|
|
|
# are we clobbering?
|
|
|
# is remote's version newer?
|
|
|
# or are we going back in time?
|
|
|
elif overwrite or m2[f] != a or (p2 == pa and mw[f] == m1[f]):
|
|
|
repo.ui.debug(_(" remote %s is newer, get\n") % f)
|
|
|
get[f] = (m2.execf(f), m2[f])
|
|
|
s = 1
|
|
|
elif f in umap or f in added:
|
|
|
# this unknown file is the same as the checkout
|
|
|
# we need to reset the dirstate if the file was added
|
|
|
get[f] = (m2.execf(f), m2[f])
|
|
|
|
|
|
if not s and mw.execf(f) != m2.execf(f):
|
|
|
if overwrite:
|
|
|
repo.ui.debug(_(" updating permissions for %s\n") % f)
|
|
|
util.set_exec(repo.wjoin(f), m2.execf(f))
|
|
|
else:
|
|
|
a, b, c = ma.execf(f), mw.execf(f), m2.execf(f)
|
|
|
mode = ((a^b) | (a^c)) ^ a
|
|
|
if mode != b:
|
|
|
repo.ui.debug(_(" updating permissions for %s\n")
|
|
|
% f)
|
|
|
util.set_exec(repo.wjoin(f), mode)
|
|
|
del m2[f]
|
|
|
elif f in ma:
|
|
|
if n != ma[f]:
|
|
|
r = _("d")
|
|
|
if not overwrite and (linear_path or branchmerge):
|
|
|
r = repo.ui.prompt(
|
|
|
(_(" local changed %s which remote deleted\n") % f) +
|
|
|
_("(k)eep or (d)elete?"), _("[kd]"), _("k"))
|
|
|
if r == _("d"):
|
|
|
remove.append(f)
|
|
|
else:
|
|
|
repo.ui.debug(_("other deleted %s\n") % f)
|
|
|
remove.append(f) # other deleted it
|
|
|
else:
|
|
|
# file is created on branch or in working directory
|
|
|
if overwrite and f not in umap:
|
|
|
repo.ui.debug(_("remote deleted %s, clobbering\n") % f)
|
|
|
remove.append(f)
|
|
|
elif n == m1.get(f, nullid): # same as parent
|
|
|
if p2 == pa: # going backwards?
|
|
|
repo.ui.debug(_("remote deleted %s\n") % f)
|
|
|
remove.append(f)
|
|
|
else:
|
|
|
repo.ui.debug(_("local modified %s, keeping\n") % f)
|
|
|
else:
|
|
|
repo.ui.debug(_("working dir created %s, keeping\n") % f)
|
|
|
|
|
|
for f, n in m2.iteritems():
|
|
|
if partial and not partial(f):
|
|
|
continue
|
|
|
if f[0] == "/":
|
|
|
continue
|
|
|
if f in ma and n != ma[f]:
|
|
|
r = _("k")
|
|
|
if not overwrite and (linear_path or branchmerge):
|
|
|
r = repo.ui.prompt(
|
|
|
(_("remote changed %s which local deleted\n") % f) +
|
|
|
_("(k)eep or (d)elete?"), _("[kd]"), _("k"))
|
|
|
if r == _("k"):
|
|
|
get[f] = (m2.execf(f), n)
|
|
|
elif f not in ma:
|
|
|
repo.ui.debug(_("remote created %s\n") % f)
|
|
|
get[f] = (m2.execf(f), n)
|
|
|
else:
|
|
|
if overwrite or p2 == pa: # going backwards?
|
|
|
repo.ui.debug(_("local deleted %s, recreating\n") % f)
|
|
|
get[f] = (m2.execf(f), n)
|
|
|
else:
|
|
|
repo.ui.debug(_("local deleted %s\n") % f)
|
|
|
|
|
|
del mw, m1, m2, ma
|
|
|
|
|
|
if overwrite:
|
|
|
for f in merge:
|
|
|
get[f] = merge[f][:2]
|
|
|
merge = {}
|
|
|
|
|
|
if linear_path or overwrite:
|
|
|
# we don't need to do any magic, just jump to the new rev
|
|
|
p1, p2 = p2, nullid
|
|
|
|
|
|
xp1 = hex(p1)
|
|
|
xp2 = hex(p2)
|
|
|
if p2 == nullid: xxp2 = ''
|
|
|
else: xxp2 = xp2
|
|
|
|
|
|
repo.hook('preupdate', throw=True, parent1=xp1, parent2=xxp2)
|
|
|
|
|
|
# get the files we don't need to change
|
|
|
files = get.keys()
|
|
|
files.sort()
|
|
|
for f in files:
|
|
|
flag, node = get[f]
|
|
|
if f[0] == "/":
|
|
|
continue
|
|
|
repo.ui.note(_("getting %s\n") % f)
|
|
|
t = repo.file(f).read(node)
|
|
|
repo.wwrite(f, t)
|
|
|
util.set_exec(repo.wjoin(f), flag)
|
|
|
if not partial:
|
|
|
if branchmerge:
|
|
|
repo.dirstate.update([f], 'n', st_mtime=-1)
|
|
|
else:
|
|
|
repo.dirstate.update([f], 'n')
|
|
|
|
|
|
# merge the tricky bits
|
|
|
unresolved = []
|
|
|
files = merge.keys()
|
|
|
files.sort()
|
|
|
for f in files:
|
|
|
repo.ui.status(_("merging %s\n") % f)
|
|
|
flag, my, other = merge[f]
|
|
|
ret = merge3(repo, f, my, other, xp1, xp2)
|
|
|
if ret:
|
|
|
unresolved.append(f)
|
|
|
util.set_exec(repo.wjoin(f), flag)
|
|
|
if not partial:
|
|
|
if branchmerge:
|
|
|
# We've done a branch merge, mark this file as merged
|
|
|
# so that we properly record the merger later
|
|
|
repo.dirstate.update([f], 'm')
|
|
|
else:
|
|
|
# We've update-merged a locally modified file, so
|
|
|
# we set the dirstate to emulate a normal checkout
|
|
|
# of that file some time in the past. Thus our
|
|
|
# merge will appear as a normal local file
|
|
|
# modification.
|
|
|
f_len = len(repo.file(f).read(other))
|
|
|
repo.dirstate.update([f], 'n', st_size=f_len, st_mtime=-1)
|
|
|
|
|
|
remove.sort()
|
|
|
for f in remove:
|
|
|
repo.ui.note(_("removing %s\n") % f)
|
|
|
util.audit_path(f)
|
|
|
try:
|
|
|
util.unlink(repo.wjoin(f))
|
|
|
except OSError, inst:
|
|
|
if inst.errno != errno.ENOENT:
|
|
|
repo.ui.warn(_("update failed to remove %s: %s!\n") %
|
|
|
(f, inst.strerror))
|
|
|
if not partial:
|
|
|
if branchmerge:
|
|
|
repo.dirstate.update(remove, 'r')
|
|
|
else:
|
|
|
repo.dirstate.forget(remove)
|
|
|
|
|
|
if not partial:
|
|
|
repo.dirstate.setparents(p1, p2)
|
|
|
|
|
|
if show_stats:
|
|
|
stats = ((len(get), _("updated")),
|
|
|
(len(merge) - len(unresolved), _("merged")),
|
|
|
(len(remove), _("removed")),
|
|
|
(len(unresolved), _("unresolved")))
|
|
|
note = ", ".join([_("%d files %s") % s for s in stats])
|
|
|
repo.ui.status("%s\n" % note)
|
|
|
if not partial:
|
|
|
if branchmerge:
|
|
|
if unresolved:
|
|
|
repo.ui.status(_("There are unresolved merges,"
|
|
|
" you can redo the full merge using:\n"
|
|
|
" hg update -C %s\n"
|
|
|
" hg merge %s\n"
|
|
|
% (repo.changelog.rev(p1),
|
|
|
repo.changelog.rev(p2))))
|
|
|
elif remind:
|
|
|
repo.ui.status(_("(branch merge, don't forget to commit)\n"))
|
|
|
elif unresolved:
|
|
|
repo.ui.status(_("There are unresolved merges with"
|
|
|
" locally modified files.\n"))
|
|
|
|
|
|
repo.hook('update', parent1=xp1, parent2=xxp2, error=len(unresolved))
|
|
|
return len(unresolved)
|
|
|
|
|
|
|
