view upmana/mercurial/copies.py @ 246:712df3d5b54c beta

Traipse Beta 'OpenRPG' {101130-01} 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 (Closed) New Features: New to Map, can re-order Grid, Miniatures, and Whiteboard layer draw order New to Server GUI, can now clear log New Earthdawn Dieroller New IronClaw roller, sheet, and image New ShapeShifter PC Sheet Updates: Update to Warhammer PC Sheet. Rollers set as macros. Should work with little maintanence. Update to Browser Server window. Display rooms with ' " & cleaner Update to Server. Handles ' " & cleaner Update to Dieroller. Cleaner, more effecient expression system Update to Hidden Die plugin, allows for non standard dice rolls Update to location.py, allows for more portable references when starting Traipse Update to the Features node Fixes: Fix to InterParse that was causing an Infernal Loop with Namespace Internal Fix to XML data, removed old Minidom and switched to Element Tree Fix to Server that was causing eternal attempt to find a Server ID, in Register Rooms thread Fix to metaservers.xml file not being created Fix to Single and Double quotes in Whiteboard text Fix to Background images not showing when using the Image Server Fix to Duplicate chat names appearing Fix to Server GUI's logging output Fix to FNB.COLORFUL_TABS bug Fix to Gametree for XSLT Sheets Fix to Gametree for locating gametree files Fix to Send to Chat from Gametree Fix to Gametree, renaming and remapping operates correctly Fix to aliaslib, prevents error caused when SafeHTML is sent None
author sirebral
date Tue, 30 Nov 2010 03:49:02 -0600
parents dcf4fbe09b70
children
line wrap: on
line source

# copies.py - copy detection for Mercurial
#
# Copyright 2008 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 i18n import _
import util
import heapq

def _nonoverlap(d1, d2, d3):
    "Return list of elements in d1 not in d2 or d3"
    return sorted([d for d in d1 if d not in d3 and d not in d2])

def _dirname(f):
    s = f.rfind("/")
    if s == -1:
        return ""
    return f[:s]

def _dirs(files):
    d = set()
    for f in files:
        f = _dirname(f)
        while f not in d:
            d.add(f)
            f = _dirname(f)
    return d

def _findoldnames(fctx, limit):
    "find files that path was copied from, back to linkrev limit"
    old = {}
    seen = set()
    orig = fctx.path()
    visit = [(fctx, 0)]
    while visit:
        fc, depth = visit.pop()
        s = str(fc)
        if s in seen:
            continue
        seen.add(s)
        if fc.path() != orig and fc.path() not in old:
            old[fc.path()] = (depth, fc.path()) # remember depth
        if fc.rev() < limit and fc.rev() is not None:
            continue
        visit += [(p, depth - 1) for p in fc.parents()]

    # return old names sorted by depth
    return [o[1] for o in sorted(old.values())]

def _findlimit(repo, a, b):
    "find the earliest revision that's an ancestor of a or b but not both"
    # basic idea:
    # - mark a and b with different sides
    # - if a parent's children are all on the same side, the parent is
    #   on that side, otherwise it is on no side
    # - walk the graph in topological order with the help of a heap;
    #   - add unseen parents to side map
    #   - clear side of any parent that has children on different sides
    #   - track number of interesting revs that might still be on a side
    #   - track the lowest interesting rev seen
    #   - quit when interesting revs is zero

    cl = repo.changelog
    working = len(cl) # pseudo rev for the working directory
    if a is None:
        a = working
    if b is None:
        b = working

    side = {a: -1, b: 1}
    visit = [-a, -b]
    heapq.heapify(visit)
    interesting = len(visit)
    limit = working

    while interesting:
        r = -heapq.heappop(visit)
        if r == working:
            parents = [cl.rev(p) for p in repo.dirstate.parents()]
        else:
            parents = cl.parentrevs(r)
        for p in parents:
            if p not in side:
                # first time we see p; add it to visit
                side[p] = side[r]
                if side[p]:
                    interesting += 1
                heapq.heappush(visit, -p)
            elif side[p] and side[p] != side[r]:
                # p was interesting but now we know better
                side[p] = 0
                interesting -= 1
        if side[r]:
            limit = r # lowest rev visited
            interesting -= 1
    return limit

def copies(repo, c1, c2, ca, checkdirs=False):
    """
    Find moves and copies between context c1 and c2
    """
    # avoid silly behavior for update from empty dir
    if not c1 or not c2 or c1 == c2:
        return {}, {}

    # avoid silly behavior for parent -> working dir
    if c2.node() is None and c1.node() == repo.dirstate.parents()[0]:
        return repo.dirstate.copies(), {}

    limit = _findlimit(repo, c1.rev(), c2.rev())
    m1 = c1.manifest()
    m2 = c2.manifest()
    ma = ca.manifest()

    def makectx(f, n):
        if len(n) != 20: # in a working context?
            if c1.rev() is None:
                return c1.filectx(f)
            return c2.filectx(f)
        return repo.filectx(f, fileid=n)

    ctx = util.lrucachefunc(makectx)
    copy = {}
    fullcopy = {}
    diverge = {}

    def checkcopies(f, m1, m2):
        '''check possible copies of f from m1 to m2'''
        c1 = ctx(f, m1[f])
        for of in _findoldnames(c1, limit):
            fullcopy[f] = of # remember for dir rename detection
            if of in m2: # original file not in other manifest?
                # if the original file is unchanged on the other branch,
                # no merge needed
                if m2[of] != ma.get(of):
                    c2 = ctx(of, m2[of])
                    ca = c1.ancestor(c2)
                    # related and named changed on only one side?
                    if ca and (ca.path() == f or ca.path() == c2.path()):
                        if c1 != ca or c2 != ca: # merge needed?
                            copy[f] = of
            elif of in ma:
                diverge.setdefault(of, []).append(f)

    repo.ui.debug(_("  searching for copies back to rev %d\n") % limit)

    u1 = _nonoverlap(m1, m2, ma)
    u2 = _nonoverlap(m2, m1, ma)

    if u1:
        repo.ui.debug(_("  unmatched files in local:\n   %s\n")
                      % "\n   ".join(u1))
    if u2:
        repo.ui.debug(_("  unmatched files in other:\n   %s\n")
                      % "\n   ".join(u2))

    for f in u1:
        checkcopies(f, m1, m2)
    for f in u2:
        checkcopies(f, m2, m1)

    diverge2 = set()
    for of, fl in diverge.items():
        if len(fl) == 1:
            del diverge[of] # not actually divergent
        else:
            diverge2.update(fl) # reverse map for below

    if fullcopy:
        repo.ui.debug(_("  all copies found (* = to merge, ! = divergent):\n"))
        for f in fullcopy:
            note = ""
            if f in copy: note += "*"
            if f in diverge2: note += "!"
            repo.ui.debug("   %s -> %s %s\n" % (f, fullcopy[f], note))
    del diverge2

    if not fullcopy or not checkdirs:
        return copy, diverge

    repo.ui.debug(_("  checking for directory renames\n"))

    # generate a directory move map
    d1, d2 = _dirs(m1), _dirs(m2)
    invalid = set()
    dirmove = {}

    # examine each file copy for a potential directory move, which is
    # when all the files in a directory are moved to a new directory
    for dst, src in fullcopy.iteritems():
        dsrc, ddst = _dirname(src), _dirname(dst)
        if dsrc in invalid:
            # already seen to be uninteresting
            continue
        elif dsrc in d1 and ddst in d1:
            # directory wasn't entirely moved locally
            invalid.add(dsrc)
        elif dsrc in d2 and ddst in d2:
            # directory wasn't entirely moved remotely
            invalid.add(dsrc)
        elif dsrc in dirmove and dirmove[dsrc] != ddst:
            # files from the same directory moved to two different places
            invalid.add(dsrc)
        else:
            # looks good so far
            dirmove[dsrc + "/"] = ddst + "/"

    for i in invalid:
        if i in dirmove:
            del dirmove[i]
    del d1, d2, invalid

    if not dirmove:
        return copy, diverge

    for d in dirmove:
        repo.ui.debug(_("  dir %s -> %s\n") % (d, dirmove[d]))

    # check unaccounted nonoverlapping files against directory moves
    for f in u1 + u2:
        if f not in fullcopy:
            for d in dirmove:
                if f.startswith(d):
                    # new file added in a directory that was moved, move it
                    df = dirmove[d] + f[len(d):]
                    if df not in copy:
                        copy[f] = df
                        repo.ui.debug(_("  file %s -> %s\n") % (f, copy[f]))
                    break

    return copy, diverge