comparison mercurial/merge.py @ 18134:6c35b53cd28b

copies: separate moves via directory renames from explicit copies

Currently the "copy" dict contains both explicit copies/moves made by a
context and pending moves that need to happen because the other context moved
the directory the file was in. For explicit copies, the dict stores a
destination to source map, while for pending moves via directory renames, it
stores a source to destination map. The merge code uses this fact in a non-
obvious way to differentiate between these two cases.

We make this explicit by storing these pending moves in a separate dict. The
dict still has a source to destination map, but that is called out in the
docstring.

18133:7f5a0eba3768

    def act(msg, m, f, *args):
        repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m))
        action.append((f, m) + args)

    action, copy = [], {}

    if overwrite:
        pa = p1
    elif pa == p2: # backwards
        pa = p1.p1()
    elif pa and repo.ui.configbool("merge", "followcopies", True):
        copy, diverge, renamedelete = copies.mergecopies(repo, p1, p2, pa)
        for of, fl in diverge.iteritems():
            act("divergent renames", "dr", of, fl)
        for of, fl in renamedelete.iteritems():
            act("rename and delete", "rd", of, fl)

                  % (bool(overwrite), bool(partial)))
    repo.ui.debug(" ancestor: %s, local: %s, remote: %s\n" % (pa, p1, p2))

    m1, m2, ma = p1.manifest(), p2.manifest(), pa.manifest()
    copied = set(copy.values())

    if '.hgsubstate' in m1:
        # check whether sub state is modified
        for s in p1.substate:
            if p1.sub(s).dirty():

                act("remote is newer", "g", f, rflags)
            else: # both changed
                act("versions differ", "m", f, f, f, rflags, False)
        elif f in copied: # files we'll deal with on m2 side
            pass
        elif f in copy:
            f2 = copy[f]
            if f2 not in m2: # directory rename
                act("remote renamed directory to " + f2, "d",
                    f, None, f2, m1.flags(f))
            else: # case 2 A,B/B/B or case 4,21 A/B/B
                act("local copied/moved to " + f2, "m",
                    f, f2, f, fmerge(f, f2, f2), False)
        elif f in ma: # clean, a different, no remote
            if n != ma[f]:
                if repo.ui.promptchoice(
                    _(" local changed %s which remote deleted\n"
                      "use (c)hanged version or (d)elete?") % f,

    for f, n in m2.iteritems():
        if partial and not partial(f):
            continue
        if f in m1 or f in copied: # files already visited
            continue
        if f in copy:
            f2 = copy[f]
            if f2 not in m1: # directory rename
                act("local renamed directory to " + f2, "d",
                    None, f, f2, m2.flags(f))
            elif f2 in m2: # rename case 1, A/A,B/A
                act("remote copied to " + f, "m",
                    f2, f, f, fmerge(f2, f, f2), False)
            else: # case 3,20 A/B/A
                act("remote moved to " + f, "m",
                    f2, f, f, fmerge(f2, f, f2), True)

18134:6c35b53cd28b

    def act(msg, m, f, *args):
        repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m))
        action.append((f, m) + args)

    action, copy, movewithdir = [], {}, {}

    if overwrite:
        pa = p1
    elif pa == p2: # backwards
        pa = p1.p1()
    elif pa and repo.ui.configbool("merge", "followcopies", True):
        ret = copies.mergecopies(repo, p1, p2, pa)
        copy, movewithdir, diverge, renamedelete = ret
        for of, fl in diverge.iteritems():
            act("divergent renames", "dr", of, fl)
        for of, fl in renamedelete.iteritems():
            act("rename and delete", "rd", of, fl)

                  % (bool(overwrite), bool(partial)))
    repo.ui.debug(" ancestor: %s, local: %s, remote: %s\n" % (pa, p1, p2))

    m1, m2, ma = p1.manifest(), p2.manifest(), pa.manifest()
    copied = set(copy.values())
    copied.update(movewithdir.values())

    if '.hgsubstate' in m1:
        # check whether sub state is modified
        for s in p1.substate:
            if p1.sub(s).dirty():

                act("remote is newer", "g", f, rflags)
            else: # both changed
                act("versions differ", "m", f, f, f, rflags, False)
        elif f in copied: # files we'll deal with on m2 side
            pass
        elif f in movewithdir: # directory rename
            f2 = movewithdir[f]
            act("remote renamed directory to " + f2, "d", f, None, f2,
                m1.flags(f))
        elif f in copy: # case 2 A,B/B/B or case 4,21 A/B/B
            f2 = copy[f]
            act("local copied/moved to " + f2, "m", f, f2, f,
                fmerge(f, f2, f2), False)
        elif f in ma: # clean, a different, no remote
            if n != ma[f]:
                if repo.ui.promptchoice(
                    _(" local changed %s which remote deleted\n"
                      "use (c)hanged version or (d)elete?") % f,

    for f, n in m2.iteritems():
        if partial and not partial(f):
            continue
        if f in m1 or f in copied: # files already visited
            continue
        if f in movewithdir:
            f2 = movewithdir[f]
            act("local renamed directory to " + f2, "d", None, f, f2,
                m2.flags(f))
        elif f in copy:
            f2 = copy[f]
            if f2 in m2: # rename case 1, A/A,B/A
                act("remote copied to " + f, "m",
                    f2, f, f, fmerge(f2, f, f2), False)
            else: # case 3,20 A/B/A
                act("remote moved to " + f, "m",
                    f2, f, f, fmerge(f2, f, f2), True)