view upmana/mercurial/merge.py @ 217:c719a07cd28d beta

Traipse Beta 'OpenRPG' {100430-01} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Patch-2) New Features: New Namespace method with two new syntaxes New Namespace Internal is context sensitive, always! New Namespace External is 'as narrow as you make it' New Namespace FutureCheck helps ensure you don't receive an incorrect node New PluginDB access for URL2Link plugin New to Forms, they now show their content in Design Mode New to Update Manager, checks Repo for updates on software start New to Mini Lin node, change title in design mode Fixes: Fix to Server GUI startup errors Fix to Server GUI Rooms tab updating Fix to Chat and Settings if non existant die roller is picked Fix to Dieroller and .open() used with .vs(). Successes are correctly calculated Fix to Alias Lib's Export to Tree, Open, Save features Fix to alias node, now works properly Fix to Splitter node, minor GUI cleanup Fix to Backgrounds not loading through remote loader Fix to Node name errors Fix to rolling dice in chat Whispers Fix to Splitters Sizing issues Fix to URL2Link plugin, modified regex compilation should remove memory leak Fix to mapy.py, a roll back due to zoomed grid issues Fix to whiteboard_handler, Circles work by you clicking the center of the circle Fix to Servers parse_incoming_dom which was outdated and did not respect XML Fix to a broken link in the server welcome message Fix to InterParse and logger requiring traceback Fix to Update Manager Status Bar Fix to failed image and erroneous pop up Fix to Mini Lib node that was preventing use Fix to plugins that parce dice but did not call InterParse Fix to nodes for name changing by double click Fix to Game Tree, node ordering on drag and drop corrected Daily-01: Again forgot the version number Files affect in last update: Currently selected branch: beta Author: sirebral Files Modified (in update): orpg/chat/commands.py orpg/gametree/gametree.py orpg/gametree/nodehandlers/containers.py orpg/gametree/nodehandlers/minilib.py orpg/pluginhandler.py plugins/xxhiddendice.py plugins/xxsimpleinit.py
author sirebral
date Fri, 30 Apr 2010 05:44:05 -0500
parents dcf4fbe09b70
children
line wrap: on
line source

# merge.py - directory-level update/merge handling for Mercurial
#
# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

from node import nullid, nullrev, hex, bin
from i18n import _
import util, filemerge, copies, subrepo
import errno, os, shutil

class mergestate(object):
    '''track 3-way merge state of individual files'''
    def __init__(self, repo):
        self._repo = repo
        self._read()
    def reset(self, node=None):
        self._state = {}
        if node:
            self._local = node
        shutil.rmtree(self._repo.join("merge"), True)
    def _read(self):
        self._state = {}
        try:
            localnode = None
            f = self._repo.opener("merge/state")
            for i, l in enumerate(f):
                if i == 0:
                    localnode = l[:-1]
                else:
                    bits = l[:-1].split("\0")
                    self._state[bits[0]] = bits[1:]
            self._local = bin(localnode)
        except IOError, err:
            if err.errno != errno.ENOENT:
                raise
    def _write(self):
        f = self._repo.opener("merge/state", "w")
        f.write(hex(self._local) + "\n")
        for d, v in self._state.iteritems():
            f.write("\0".join([d] + v) + "\n")
    def add(self, fcl, fco, fca, fd, flags):
        hash = util.sha1(fcl.path()).hexdigest()
        self._repo.opener("merge/" + hash, "w").write(fcl.data())
        self._state[fd] = ['u', hash, fcl.path(), fca.path(),
                           hex(fca.filenode()), fco.path(), flags]
        self._write()
    def __contains__(self, dfile):
        return dfile in self._state
    def __getitem__(self, dfile):
        return self._state[dfile][0]
    def __iter__(self):
        l = self._state.keys()
        l.sort()
        for f in l:
            yield f
    def mark(self, dfile, state):
        self._state[dfile][0] = state
        self._write()
    def resolve(self, dfile, wctx, octx):
        if self[dfile] == 'r':
            return 0
        state, hash, lfile, afile, anode, ofile, flags = self._state[dfile]
        f = self._repo.opener("merge/" + hash)
        self._repo.wwrite(dfile, f.read(), flags)
        fcd = wctx[dfile]
        fco = octx[ofile]
        fca = self._repo.filectx(afile, fileid=anode)
        r = filemerge.filemerge(self._repo, self._local, lfile, fcd, fco, fca)
        if not r:
            self.mark(dfile, 'r')
        return r

def _checkunknown(wctx, mctx):
    "check for collisions between unknown files and files in mctx"
    for f in wctx.unknown():
        if f in mctx and mctx[f].cmp(wctx[f].data()):
            raise util.Abort(_("untracked file in working directory differs"
                               " from file in requested revision: '%s'") % f)

def _checkcollision(mctx):
    "check for case folding collisions in the destination context"
    folded = {}
    for fn in mctx:
        fold = fn.lower()
        if fold in folded:
            raise util.Abort(_("case-folding collision between %s and %s")
                             % (fn, folded[fold]))
        folded[fold] = fn

def _forgetremoved(wctx, mctx, branchmerge):
    """
    Forget removed files

    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 we're merging, and the other revision has removed a file
    that is not present in the working directory, we need to mark it
    as removed.
    """

    action = []
    state = branchmerge and 'r' or 'f'
    for f in wctx.deleted():
        if f not in mctx:
            action.append((f, state))

    if not branchmerge:
        for f in wctx.removed():
            if f not in mctx:
                action.append((f, "f"))

    return action

def manifestmerge(repo, p1, p2, pa, overwrite, partial):
    """
    Merge p1 and p2 with ancestor ma and generate merge action list

    overwrite = whether we clobber working files
    partial = function to filter file lists
    """

    def fmerge(f, f2, fa):
        """merge flags"""
        a, m, n = ma.flags(fa), m1.flags(f), m2.flags(f2)
        if m == n: # flags agree
            return m # unchanged
        if m and n and not a: # flags set, don't agree, differ from parent
            r = repo.ui.prompt(
                _(" conflicting flags for %s\n"
                  "(n)one, e(x)ec or sym(l)ink?") % f,
                (_("&None"), _("E&xec"), _("Sym&link")), _("n"))
            return r != _("n") and r or ''
        if m and m != a: # changed from a to m
            return m
        if n and n != a: # changed from a to n
            return n
        return '' # flag was cleared

    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):
        dirs = repo.ui.configbool("merge", "followdirs", True)
        copy, diverge = copies.copies(repo, p1, p2, pa, dirs)
        for of, fl in diverge.iteritems():
            act("divergent renames", "dr", of, fl)

    repo.ui.note(_("resolving manifests\n"))
    repo.ui.debug(_(" overwrite %s partial %s\n") % (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())

    # Compare manifests
    for f, n in m1.iteritems():
        if partial and not partial(f):
            continue
        if f in m2:
            rflags = fmerge(f, f, f)
            a = ma.get(f, nullid)
            if n == m2[f] or m2[f] == a: # same or local newer
                if m1.flags(f) != rflags:
                    act("update permissions", "e", f, rflags)
            elif n == a: # remote newer
                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.prompt(
                    _(" local changed %s which remote deleted\n"
                      "use (c)hanged version or (d)elete?") % f,
                    (_("&Changed"), _("&Delete")), _("c")) == _("d"):
                    act("prompt delete", "r", f)
                else:
                    act("prompt keep", "a", f)
            elif n[20:] == "a": # added, no remote
                act("remote deleted", "f", f)
            elif n[20:] != "u":
                act("other deleted", "r", 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)
        elif f not in ma:
            act("remote created", "g", f, m2.flags(f))
        elif n != ma[f]:
            if repo.ui.prompt(
                _("remote changed %s which local deleted\n"
                  "use (c)hanged version or leave (d)eleted?") % f,
                (_("&Changed"), _("&Deleted")), _("c")) == _("c"):
                act("prompt recreating", "g", f, m2.flags(f))

    return action

def actionkey(a):
    return a[1] == 'r' and -1 or 0, a

def applyupdates(repo, action, wctx, mctx):
    "apply the merge action list to the working directory"

    updated, merged, removed, unresolved = 0, 0, 0, 0
    ms = mergestate(repo)
    ms.reset(wctx.parents()[0].node())
    moves = []
    action.sort(key=actionkey)
    substate = wctx.substate # prime

    # prescan for merges
    for a in action:
        f, m = a[:2]
        if m == 'm': # merge
            f2, fd, flags, move = a[2:]
            if f == '.hgsubstate': # merged internally
                continue
            repo.ui.debug(_("preserving %s for resolve of %s\n") % (f, fd))
            fcl = wctx[f]
            fco = mctx[f2]
            fca = fcl.ancestor(fco) or repo.filectx(f, fileid=nullrev)
            ms.add(fcl, fco, fca, fd, flags)
            if f != fd and move:
                moves.append(f)

    # remove renamed files after safely stored
    for f in moves:
        if util.lexists(repo.wjoin(f)):
            repo.ui.debug(_("removing %s\n") % f)
            os.unlink(repo.wjoin(f))

    audit_path = util.path_auditor(repo.root)

    for a in action:
        f, m = a[:2]
        if f and f[0] == "/":
            continue
        if m == "r": # remove
            repo.ui.note(_("removing %s\n") % f)
            audit_path(f)
            if f == '.hgsubstate': # subrepo states need updating
                subrepo.submerge(repo, wctx, mctx, wctx)
            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))
            removed += 1
        elif m == "m": # merge
            if f == '.hgsubstate': # subrepo states need updating
                subrepo.submerge(repo, wctx, mctx, wctx.ancestor(mctx))
                continue
            f2, fd, flags, move = a[2:]
            r = ms.resolve(fd, wctx, mctx)
            if r > 0:
                unresolved += 1
            else:
                if r is None:
                    updated += 1
                else:
                    merged += 1
            util.set_flags(repo.wjoin(fd), 'l' in flags, 'x' in flags)
            if f != fd and move and util.lexists(repo.wjoin(f)):
                repo.ui.debug(_("removing %s\n") % f)
                os.unlink(repo.wjoin(f))
        elif m == "g": # get
            flags = a[2]
            repo.ui.note(_("getting %s\n") % f)
            t = mctx.filectx(f).data()
            repo.wwrite(f, t, flags)
            updated += 1
            if f == '.hgsubstate': # subrepo states need updating
                subrepo.submerge(repo, wctx, mctx, wctx)
        elif m == "d": # directory rename
            f2, fd, flags = a[2:]
            if f:
                repo.ui.note(_("moving %s to %s\n") % (f, fd))
                t = wctx.filectx(f).data()
                repo.wwrite(fd, t, flags)
                util.unlink(repo.wjoin(f))
            if f2:
                repo.ui.note(_("getting %s to %s\n") % (f2, fd))
                t = mctx.filectx(f2).data()
                repo.wwrite(fd, t, flags)
            updated += 1
        elif m == "dr": # divergent renames
            fl = a[2]
            repo.ui.warn(_("warning: detected divergent renames of %s to:\n") % f)
            for nf in fl:
                repo.ui.warn(" %s\n" % nf)
        elif m == "e": # exec
            flags = a[2]
            util.set_flags(repo.wjoin(f), 'l' in flags, 'x' in flags)

    return updated, merged, removed, unresolved

def recordupdates(repo, action, branchmerge):
    "record merge actions to the dirstate"

    for a in action:
        f, m = a[:2]
        if m == "r": # remove
            if branchmerge:
                repo.dirstate.remove(f)
            else:
                repo.dirstate.forget(f)
        elif m == "a": # re-add
            if not branchmerge:
                repo.dirstate.add(f)
        elif m == "f": # forget
            repo.dirstate.forget(f)
        elif m == "e": # exec change
            repo.dirstate.normallookup(f)
        elif m == "g": # get
            if branchmerge:
                repo.dirstate.normaldirty(f)
            else:
                repo.dirstate.normal(f)
        elif m == "m": # merge
            f2, fd, flag, move = a[2:]
            if branchmerge:
                # We've done a branch merge, mark this file as merged
                # so that we properly record the merger later
                repo.dirstate.merge(fd)
                if f != f2: # copy/rename
                    if move:
                        repo.dirstate.remove(f)
                    if f != fd:
                        repo.dirstate.copy(f, fd)
                    else:
                        repo.dirstate.copy(f2, fd)
            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.
                repo.dirstate.normallookup(fd)
                if move:
                    repo.dirstate.forget(f)
        elif m == "d": # directory rename
            f2, fd, flag = a[2:]
            if not f2 and f not in repo.dirstate:
                # untracked file moved
                continue
            if branchmerge:
                repo.dirstate.add(fd)
                if f:
                    repo.dirstate.remove(f)
                    repo.dirstate.copy(f, fd)
                if f2:
                    repo.dirstate.copy(f2, fd)
            else:
                repo.dirstate.normal(fd)
                if f:
                    repo.dirstate.forget(f)

def update(repo, node, branchmerge, force, partial):
    """
    Perform a merge between the working directory and the given node

    branchmerge = whether to merge between branches
    force = whether to force branch merging or file overwriting
    partial = a function to filter file lists (dirstate not updated)
    """

    wlock = repo.wlock()
    try:
        wc = repo[None]
        if node is None:
            # tip of current branch
            try:
                node = repo.branchtags()[wc.branch()]
            except KeyError:
                if wc.branch() == "default": # no default branch!
                    node = repo.lookup("tip") # update to tip
                else:
                    raise util.Abort(_("branch %s not found") % wc.branch())
        overwrite = force and not branchmerge
        pl = wc.parents()
        p1, p2 = pl[0], repo[node]
        pa = p1.ancestor(p2)
        fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)
        fastforward = False

        ### check phase
        if not overwrite and len(pl) > 1:
            raise util.Abort(_("outstanding uncommitted merges"))
        if branchmerge:
            if pa == p2:
                raise util.Abort(_("can't merge with ancestor"))
            elif pa == p1:
                if p1.branch() != p2.branch():
                    fastforward = True
                else:
                    raise util.Abort(_("nothing to merge (use 'hg update'"
                                       " or check 'hg heads')"))
            if not force and (wc.files() or wc.deleted()):
                raise util.Abort(_("outstanding uncommitted changes "
                                   "(use 'hg status' to list changes)"))
        elif not overwrite:
            if pa == p1 or pa == p2: # linear
                pass # all good
            elif p1.branch() == p2.branch():
                if wc.files() or wc.deleted():
                    raise util.Abort(_("crosses branches (use 'hg merge' or "
                                       "'hg update -C' to discard changes)"))
                raise util.Abort(_("crosses branches (use 'hg merge' "
                                   "or 'hg update -C')"))
            elif wc.files() or wc.deleted():
                raise util.Abort(_("crosses named branches (use "
                                   "'hg update -C' to discard changes)"))
            else:
                # Allow jumping branches if there are no changes
                overwrite = True

        ### calculate phase
        action = []
        if not force:
            _checkunknown(wc, p2)
        if not util.checkcase(repo.path):
            _checkcollision(p2)
        action += _forgetremoved(wc, p2, branchmerge)
        action += manifestmerge(repo, wc, p2, pa, overwrite, partial)

        ### apply phase
        if not branchmerge: # just jump to the new rev
            fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''
        if not partial:
            repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2)

        stats = applyupdates(repo, action, wc, p2)

        if not partial:
            recordupdates(repo, action, branchmerge)
            repo.dirstate.setparents(fp1, fp2)
            if not branchmerge and not fastforward:
                repo.dirstate.setbranch(p2.branch())
            repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3])

        return stats
    finally:
        wlock.release()