/usr/lib/python2.7/dist-packages/mercurial/filemerge.py is in mercurial-common 4.5.3-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 | # filemerge.py - file-level merge handling for Mercurial
#
# Copyright 2006, 2007, 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 or any later version.
from __future__ import absolute_import
import os
import re
import tempfile
from .i18n import _
from .node import nullid, short
from . import (
encoding,
error,
formatter,
match,
pycompat,
registrar,
scmutil,
simplemerge,
tagmerge,
templatekw,
templater,
util,
)
def _toolstr(ui, tool, part, *args):
return ui.config("merge-tools", tool + "." + part, *args)
def _toolbool(ui, tool, part,*args):
return ui.configbool("merge-tools", tool + "." + part, *args)
def _toollist(ui, tool, part):
return ui.configlist("merge-tools", tool + "." + part)
internals = {}
# Merge tools to document.
internalsdoc = {}
internaltool = registrar.internalmerge()
# internal tool merge types
nomerge = internaltool.nomerge
mergeonly = internaltool.mergeonly # just the full merge, no premerge
fullmerge = internaltool.fullmerge # both premerge and merge
_localchangedotherdeletedmsg = _(
"local%(l)s changed %(fd)s which other%(o)s deleted\n"
"use (c)hanged version, (d)elete, or leave (u)nresolved?"
"$$ &Changed $$ &Delete $$ &Unresolved")
_otherchangedlocaldeletedmsg = _(
"other%(o)s changed %(fd)s which local%(l)s deleted\n"
"use (c)hanged version, leave (d)eleted, or "
"leave (u)nresolved?"
"$$ &Changed $$ &Deleted $$ &Unresolved")
class absentfilectx(object):
"""Represents a file that's ostensibly in a context but is actually not
present in it.
This is here because it's very specific to the filemerge code for now --
other code is likely going to break with the values this returns."""
def __init__(self, ctx, f):
self._ctx = ctx
self._f = f
def path(self):
return self._f
def size(self):
return None
def data(self):
return None
def filenode(self):
return nullid
_customcmp = True
def cmp(self, fctx):
"""compare with other file context
returns True if different from fctx.
"""
return not (fctx.isabsent() and
fctx.ctx() == self.ctx() and
fctx.path() == self.path())
def flags(self):
return ''
def changectx(self):
return self._ctx
def isbinary(self):
return False
def isabsent(self):
return True
def _findtool(ui, tool):
if tool in internals:
return tool
return findexternaltool(ui, tool)
def findexternaltool(ui, tool):
for kn in ("regkey", "regkeyalt"):
k = _toolstr(ui, tool, kn)
if not k:
continue
p = util.lookupreg(k, _toolstr(ui, tool, "regname"))
if p:
p = util.findexe(p + _toolstr(ui, tool, "regappend", ""))
if p:
return p
exe = _toolstr(ui, tool, "executable", tool)
return util.findexe(util.expandpath(exe))
def _picktool(repo, ui, path, binary, symlink, changedelete):
def supportscd(tool):
return tool in internals and internals[tool].mergetype == nomerge
def check(tool, pat, symlink, binary, changedelete):
tmsg = tool
if pat:
tmsg = _("%s (for pattern %s)") % (tool, pat)
if not _findtool(ui, tool):
if pat: # explicitly requested tool deserves a warning
ui.warn(_("couldn't find merge tool %s\n") % tmsg)
else: # configured but non-existing tools are more silent
ui.note(_("couldn't find merge tool %s\n") % tmsg)
elif symlink and not _toolbool(ui, tool, "symlink"):
ui.warn(_("tool %s can't handle symlinks\n") % tmsg)
elif binary and not _toolbool(ui, tool, "binary"):
ui.warn(_("tool %s can't handle binary\n") % tmsg)
elif changedelete and not supportscd(tool):
# the nomerge tools are the only tools that support change/delete
# conflicts
pass
elif not util.gui() and _toolbool(ui, tool, "gui"):
ui.warn(_("tool %s requires a GUI\n") % tmsg)
else:
return True
return False
# internal config: ui.forcemerge
# forcemerge comes from command line arguments, highest priority
force = ui.config('ui', 'forcemerge')
if force:
toolpath = _findtool(ui, force)
if changedelete and not supportscd(toolpath):
return ":prompt", None
else:
if toolpath:
return (force, util.shellquote(toolpath))
else:
# mimic HGMERGE if given tool not found
return (force, force)
# HGMERGE takes next precedence
hgmerge = encoding.environ.get("HGMERGE")
if hgmerge:
if changedelete and not supportscd(hgmerge):
return ":prompt", None
else:
return (hgmerge, hgmerge)
# then patterns
for pat, tool in ui.configitems("merge-patterns"):
mf = match.match(repo.root, '', [pat])
if mf(path) and check(tool, pat, symlink, False, changedelete):
toolpath = _findtool(ui, tool)
return (tool, util.shellquote(toolpath))
# then merge tools
tools = {}
disabled = set()
for k, v in ui.configitems("merge-tools"):
t = k.split('.')[0]
if t not in tools:
tools[t] = int(_toolstr(ui, t, "priority"))
if _toolbool(ui, t, "disabled"):
disabled.add(t)
names = tools.keys()
tools = sorted([(-p, tool) for tool, p in tools.items()
if tool not in disabled])
uimerge = ui.config("ui", "merge")
if uimerge:
# external tools defined in uimerge won't be able to handle
# change/delete conflicts
if uimerge not in names and not changedelete:
return (uimerge, uimerge)
tools.insert(0, (None, uimerge)) # highest priority
tools.append((None, "hgmerge")) # the old default, if found
for p, t in tools:
if check(t, None, symlink, binary, changedelete):
toolpath = _findtool(ui, t)
return (t, util.shellquote(toolpath))
# internal merge or prompt as last resort
if symlink or binary or changedelete:
if not changedelete and len(tools):
# any tool is rejected by capability for symlink or binary
ui.warn(_("no tool found to merge %s\n") % path)
return ":prompt", None
return ":merge", None
def _eoltype(data):
"Guess the EOL type of a file"
if '\0' in data: # binary
return None
if '\r\n' in data: # Windows
return '\r\n'
if '\r' in data: # Old Mac
return '\r'
if '\n' in data: # UNIX
return '\n'
return None # unknown
def _matcheol(file, back):
"Convert EOL markers in a file to match origfile"
tostyle = _eoltype(back.data()) # No repo.wread filters?
if tostyle:
data = util.readfile(file)
style = _eoltype(data)
if style:
newdata = data.replace(style, tostyle)
if newdata != data:
util.writefile(file, newdata)
@internaltool('prompt', nomerge)
def _iprompt(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None):
"""Asks the user which of the local `p1()` or the other `p2()` version to
keep as the merged version."""
ui = repo.ui
fd = fcd.path()
# Avoid prompting during an in-memory merge since it doesn't support merge
# conflicts.
if fcd.changectx().isinmemory():
raise error.InMemoryMergeConflictsError('in-memory merge does not '
'support file conflicts')
prompts = partextras(labels)
prompts['fd'] = fd
try:
if fco.isabsent():
index = ui.promptchoice(
_localchangedotherdeletedmsg % prompts, 2)
choice = ['local', 'other', 'unresolved'][index]
elif fcd.isabsent():
index = ui.promptchoice(
_otherchangedlocaldeletedmsg % prompts, 2)
choice = ['other', 'local', 'unresolved'][index]
else:
index = ui.promptchoice(
_("keep (l)ocal%(l)s, take (o)ther%(o)s, or leave (u)nresolved"
" for %(fd)s?"
"$$ &Local $$ &Other $$ &Unresolved") % prompts, 2)
choice = ['local', 'other', 'unresolved'][index]
if choice == 'other':
return _iother(repo, mynode, orig, fcd, fco, fca, toolconf,
labels)
elif choice == 'local':
return _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf,
labels)
elif choice == 'unresolved':
return _ifail(repo, mynode, orig, fcd, fco, fca, toolconf,
labels)
except error.ResponseExpected:
ui.write("\n")
return _ifail(repo, mynode, orig, fcd, fco, fca, toolconf,
labels)
@internaltool('local', nomerge)
def _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None):
"""Uses the local `p1()` version of files as the merged version."""
return 0, fcd.isabsent()
@internaltool('other', nomerge)
def _iother(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None):
"""Uses the other `p2()` version of files as the merged version."""
if fco.isabsent():
# local changed, remote deleted -- 'deleted' picked
_underlyingfctxifabsent(fcd).remove()
deleted = True
else:
_underlyingfctxifabsent(fcd).write(fco.data(), fco.flags())
deleted = False
return 0, deleted
@internaltool('fail', nomerge)
def _ifail(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None):
"""
Rather than attempting to merge files that were modified on both
branches, it marks them as unresolved. The resolve command must be
used to resolve these conflicts."""
# for change/delete conflicts write out the changed version, then fail
if fcd.isabsent():
_underlyingfctxifabsent(fcd).write(fco.data(), fco.flags())
return 1, False
def _underlyingfctxifabsent(filectx):
"""Sometimes when resolving, our fcd is actually an absentfilectx, but
we want to write to it (to do the resolve). This helper returns the
underyling workingfilectx in that case.
"""
if filectx.isabsent():
return filectx.changectx()[filectx.path()]
else:
return filectx
def _premerge(repo, fcd, fco, fca, toolconf, files, labels=None):
tool, toolpath, binary, symlink = toolconf
if symlink or fcd.isabsent() or fco.isabsent():
return 1
unused, unused, unused, back = files
ui = repo.ui
validkeep = ['keep', 'keep-merge3']
# do we attempt to simplemerge first?
try:
premerge = _toolbool(ui, tool, "premerge", not binary)
except error.ConfigError:
premerge = _toolstr(ui, tool, "premerge", "").lower()
if premerge not in validkeep:
_valid = ', '.join(["'" + v + "'" for v in validkeep])
raise error.ConfigError(_("%s.premerge not valid "
"('%s' is neither boolean nor %s)") %
(tool, premerge, _valid))
if premerge:
if premerge == 'keep-merge3':
if not labels:
labels = _defaultconflictlabels
if len(labels) < 3:
labels.append('base')
r = simplemerge.simplemerge(ui, fcd, fca, fco, quiet=True, label=labels)
if not r:
ui.debug(" premerge successful\n")
return 0
if premerge not in validkeep:
# restore from backup and try again
_restorebackup(fcd, back)
return 1 # continue merging
def _mergecheck(repo, mynode, orig, fcd, fco, fca, toolconf):
tool, toolpath, binary, symlink = toolconf
if symlink:
repo.ui.warn(_('warning: internal %s cannot merge symlinks '
'for %s\n') % (tool, fcd.path()))
return False
if fcd.isabsent() or fco.isabsent():
repo.ui.warn(_('warning: internal %s cannot merge change/delete '
'conflict for %s\n') % (tool, fcd.path()))
return False
return True
def _merge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels, mode):
"""
Uses the internal non-interactive simple merge algorithm for merging
files. It will fail if there are any conflicts and leave markers in
the partially merged file. Markers will have two sections, one for each side
of merge, unless mode equals 'union' which suppresses the markers."""
ui = repo.ui
r = simplemerge.simplemerge(ui, fcd, fca, fco, label=labels, mode=mode)
return True, r, False
@internaltool('union', fullmerge,
_("warning: conflicts while merging %s! "
"(edit, then use 'hg resolve --mark')\n"),
precheck=_mergecheck)
def _iunion(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
"""
Uses the internal non-interactive simple merge algorithm for merging
files. It will use both left and right sides for conflict regions.
No markers are inserted."""
return _merge(repo, mynode, orig, fcd, fco, fca, toolconf,
files, labels, 'union')
@internaltool('merge', fullmerge,
_("warning: conflicts while merging %s! "
"(edit, then use 'hg resolve --mark')\n"),
precheck=_mergecheck)
def _imerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
"""
Uses the internal non-interactive simple merge algorithm for merging
files. It will fail if there are any conflicts and leave markers in
the partially merged file. Markers will have two sections, one for each side
of merge."""
return _merge(repo, mynode, orig, fcd, fco, fca, toolconf,
files, labels, 'merge')
@internaltool('merge3', fullmerge,
_("warning: conflicts while merging %s! "
"(edit, then use 'hg resolve --mark')\n"),
precheck=_mergecheck)
def _imerge3(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
"""
Uses the internal non-interactive simple merge algorithm for merging
files. It will fail if there are any conflicts and leave markers in
the partially merged file. Marker will have three sections, one from each
side of the merge and one for the base content."""
if not labels:
labels = _defaultconflictlabels
if len(labels) < 3:
labels.append('base')
return _imerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels)
def _imergeauto(repo, mynode, orig, fcd, fco, fca, toolconf, files,
labels=None, localorother=None):
"""
Generic driver for _imergelocal and _imergeother
"""
assert localorother is not None
tool, toolpath, binary, symlink = toolconf
r = simplemerge.simplemerge(repo.ui, fcd, fca, fco, label=labels,
localorother=localorother)
return True, r
@internaltool('merge-local', mergeonly, precheck=_mergecheck)
def _imergelocal(*args, **kwargs):
"""
Like :merge, but resolve all conflicts non-interactively in favor
of the local `p1()` changes."""
success, status = _imergeauto(localorother='local', *args, **kwargs)
return success, status, False
@internaltool('merge-other', mergeonly, precheck=_mergecheck)
def _imergeother(*args, **kwargs):
"""
Like :merge, but resolve all conflicts non-interactively in favor
of the other `p2()` changes."""
success, status = _imergeauto(localorother='other', *args, **kwargs)
return success, status, False
@internaltool('tagmerge', mergeonly,
_("automatic tag merging of %s failed! "
"(use 'hg resolve --tool :merge' or another merge "
"tool of your choice)\n"))
def _itagmerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
"""
Uses the internal tag merge algorithm (experimental).
"""
success, status = tagmerge.merge(repo, fcd, fco, fca)
return success, status, False
@internaltool('dump', fullmerge)
def _idump(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
"""
Creates three versions of the files to merge, containing the
contents of local, other and base. These files can then be used to
perform a merge manually. If the file to be merged is named
``a.txt``, these files will accordingly be named ``a.txt.local``,
``a.txt.other`` and ``a.txt.base`` and they will be placed in the
same directory as ``a.txt``.
This implies premerge. Therefore, files aren't dumped, if premerge
runs successfully. Use :forcedump to forcibly write files out.
"""
a = _workingpath(repo, fcd)
fd = fcd.path()
from . import context
if isinstance(fcd, context.overlayworkingfilectx):
raise error.InMemoryMergeConflictsError('in-memory merge does not '
'support the :dump tool.')
util.writefile(a + ".local", fcd.decodeddata())
repo.wwrite(fd + ".other", fco.data(), fco.flags())
repo.wwrite(fd + ".base", fca.data(), fca.flags())
return False, 1, False
@internaltool('forcedump', mergeonly)
def _forcedump(repo, mynode, orig, fcd, fco, fca, toolconf, files,
labels=None):
"""
Creates three versions of the files as same as :dump, but omits premerge.
"""
return _idump(repo, mynode, orig, fcd, fco, fca, toolconf, files,
labels=labels)
def _xmergeimm(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
# In-memory merge simply raises an exception on all external merge tools,
# for now.
#
# It would be possible to run most tools with temporary files, but this
# raises the question of what to do if the user only partially resolves the
# file -- we can't leave a merge state. (Copy to somewhere in the .hg/
# directory and tell the user how to get it is my best idea, but it's
# clunky.)
raise error.InMemoryMergeConflictsError('in-memory merge does not support '
'external merge tools')
def _xmerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None):
tool, toolpath, binary, symlink = toolconf
if fcd.isabsent() or fco.isabsent():
repo.ui.warn(_('warning: %s cannot merge change/delete conflict '
'for %s\n') % (tool, fcd.path()))
return False, 1, None
unused, unused, unused, back = files
a = _workingpath(repo, fcd)
b, c = _maketempfiles(repo, fco, fca)
try:
out = ""
env = {'HG_FILE': fcd.path(),
'HG_MY_NODE': short(mynode),
'HG_OTHER_NODE': str(fco.changectx()),
'HG_BASE_NODE': str(fca.changectx()),
'HG_MY_ISLINK': 'l' in fcd.flags(),
'HG_OTHER_ISLINK': 'l' in fco.flags(),
'HG_BASE_ISLINK': 'l' in fca.flags(),
}
ui = repo.ui
args = _toolstr(ui, tool, "args")
if "$output" in args:
# read input from backup, write to original
out = a
a = repo.wvfs.join(back.path())
replace = {'local': a, 'base': b, 'other': c, 'output': out}
args = util.interpolate(r'\$', replace, args,
lambda s: util.shellquote(util.localpath(s)))
cmd = toolpath + ' ' + args
if _toolbool(ui, tool, "gui"):
repo.ui.status(_('running merge tool %s for file %s\n') %
(tool, fcd.path()))
repo.ui.debug('launching merge tool: %s\n' % cmd)
r = ui.system(cmd, cwd=repo.root, environ=env, blockedtag='mergetool')
repo.ui.debug('merge tool returned: %d\n' % r)
return True, r, False
finally:
util.unlink(b)
util.unlink(c)
def _formatconflictmarker(ctx, template, label, pad):
"""Applies the given template to the ctx, prefixed by the label.
Pad is the minimum width of the label prefix, so that multiple markers
can have aligned templated parts.
"""
if ctx.node() is None:
ctx = ctx.p1()
props = {'ctx': ctx}
templateresult = template.render(props)
label = ('%s:' % label).ljust(pad + 1)
mark = '%s %s' % (label, templateresult)
if mark:
mark = mark.splitlines()[0] # split for safety
# 8 for the prefix of conflict marker lines (e.g. '<<<<<<< ')
return util.ellipsis(mark, 80 - 8)
_defaultconflictlabels = ['local', 'other']
def _formatlabels(repo, fcd, fco, fca, labels):
"""Formats the given labels using the conflict marker template.
Returns a list of formatted labels.
"""
cd = fcd.changectx()
co = fco.changectx()
ca = fca.changectx()
ui = repo.ui
template = ui.config('ui', 'mergemarkertemplate')
template = templater.unquotestring(template)
tres = formatter.templateresources(ui, repo)
tmpl = formatter.maketemplater(ui, template, defaults=templatekw.keywords,
resources=tres)
pad = max(len(l) for l in labels)
newlabels = [_formatconflictmarker(cd, tmpl, labels[0], pad),
_formatconflictmarker(co, tmpl, labels[1], pad)]
if len(labels) > 2:
newlabels.append(_formatconflictmarker(ca, tmpl, labels[2], pad))
return newlabels
def partextras(labels):
"""Return a dictionary of extra labels for use in prompts to the user
Intended use is in strings of the form "(l)ocal%(l)s".
"""
if labels is None:
return {
"l": "",
"o": "",
}
return {
"l": " [%s]" % labels[0],
"o": " [%s]" % labels[1],
}
def _restorebackup(fcd, back):
# TODO: Add a workingfilectx.write(otherfilectx) path so we can use
# util.copy here instead.
fcd.write(back.data(), fcd.flags())
def _makebackup(repo, ui, wctx, fcd, premerge):
"""Makes and returns a filectx-like object for ``fcd``'s backup file.
In addition to preserving the user's pre-existing modifications to `fcd`
(if any), the backup is used to undo certain premerges, confirm whether a
merge changed anything, and determine what line endings the new file should
have.
Backups only need to be written once (right before the premerge) since their
content doesn't change afterwards.
"""
if fcd.isabsent():
return None
# TODO: Break this import cycle somehow. (filectx -> ctx -> fileset ->
# merge -> filemerge). (I suspect the fileset import is the weakest link)
from . import context
a = _workingpath(repo, fcd)
back = scmutil.origpath(ui, repo, a)
inworkingdir = (back.startswith(repo.wvfs.base) and not
back.startswith(repo.vfs.base))
if isinstance(fcd, context.overlayworkingfilectx) and inworkingdir:
# If the backup file is to be in the working directory, and we're
# merging in-memory, we must redirect the backup to the memory context
# so we don't disturb the working directory.
relpath = back[len(repo.wvfs.base) + 1:]
if premerge:
wctx[relpath].write(fcd.data(), fcd.flags())
return wctx[relpath]
else:
if premerge:
# Otherwise, write to wherever path the user specified the backups
# should go. We still need to switch based on whether the source is
# in-memory so we can use the fast path of ``util.copy`` if both are
# on disk.
if isinstance(fcd, context.overlayworkingfilectx):
util.writefile(back, fcd.data())
else:
util.copyfile(a, back)
# A arbitraryfilectx is returned, so we can run the same functions on
# the backup context regardless of where it lives.
return context.arbitraryfilectx(back, repo=repo)
def _maketempfiles(repo, fco, fca):
"""Writes out `fco` and `fca` as temporary files, so an external merge
tool may use them.
"""
def temp(prefix, ctx):
fullbase, ext = os.path.splitext(ctx.path())
pre = "%s~%s." % (os.path.basename(fullbase), prefix)
(fd, name) = tempfile.mkstemp(prefix=pre, suffix=ext)
data = repo.wwritedata(ctx.path(), ctx.data())
f = os.fdopen(fd, pycompat.sysstr("wb"))
f.write(data)
f.close()
return name
b = temp("base", fca)
c = temp("other", fco)
return b, c
def _filemerge(premerge, repo, wctx, mynode, orig, fcd, fco, fca, labels=None):
"""perform a 3-way merge in the working directory
premerge = whether this is a premerge
mynode = parent node before merge
orig = original local filename before merge
fco = other file context
fca = ancestor file context
fcd = local file context for current/destination file
Returns whether the merge is complete, the return value of the merge, and
a boolean indicating whether the file was deleted from disk."""
if not fco.cmp(fcd): # files identical?
return True, None, False
ui = repo.ui
fd = fcd.path()
binary = fcd.isbinary() or fco.isbinary() or fca.isbinary()
symlink = 'l' in fcd.flags() + fco.flags()
changedelete = fcd.isabsent() or fco.isabsent()
tool, toolpath = _picktool(repo, ui, fd, binary, symlink, changedelete)
if tool in internals and tool.startswith('internal:'):
# normalize to new-style names (':merge' etc)
tool = tool[len('internal'):]
ui.debug("picked tool '%s' for %s (binary %s symlink %s changedelete %s)\n"
% (tool, fd, pycompat.bytestr(binary), pycompat.bytestr(symlink),
pycompat.bytestr(changedelete)))
if tool in internals:
func = internals[tool]
mergetype = func.mergetype
onfailure = func.onfailure
precheck = func.precheck
else:
if wctx.isinmemory():
func = _xmergeimm
else:
func = _xmerge
mergetype = fullmerge
onfailure = _("merging %s failed!\n")
precheck = None
toolconf = tool, toolpath, binary, symlink
if mergetype == nomerge:
r, deleted = func(repo, mynode, orig, fcd, fco, fca, toolconf, labels)
return True, r, deleted
if premerge:
if orig != fco.path():
ui.status(_("merging %s and %s to %s\n") % (orig, fco.path(), fd))
else:
ui.status(_("merging %s\n") % fd)
ui.debug("my %s other %s ancestor %s\n" % (fcd, fco, fca))
if precheck and not precheck(repo, mynode, orig, fcd, fco, fca,
toolconf):
if onfailure:
if wctx.isinmemory():
raise error.InMemoryMergeConflictsError('in-memory merge does '
'not support merge '
'conflicts')
ui.warn(onfailure % fd)
return True, 1, False
back = _makebackup(repo, ui, wctx, fcd, premerge)
files = (None, None, None, back)
r = 1
try:
markerstyle = ui.config('ui', 'mergemarkers')
if not labels:
labels = _defaultconflictlabels
if markerstyle != 'basic':
labels = _formatlabels(repo, fcd, fco, fca, labels)
if premerge and mergetype == fullmerge:
r = _premerge(repo, fcd, fco, fca, toolconf, files, labels=labels)
# complete if premerge successful (r is 0)
return not r, r, False
needcheck, r, deleted = func(repo, mynode, orig, fcd, fco, fca,
toolconf, files, labels=labels)
if needcheck:
r = _check(repo, r, ui, tool, fcd, files)
if r:
if onfailure:
if wctx.isinmemory():
raise error.InMemoryMergeConflictsError('in-memory merge '
'does not support '
'merge conflicts')
ui.warn(onfailure % fd)
_onfilemergefailure(ui)
return True, r, deleted
finally:
if not r and back is not None:
back.remove()
def _haltmerge():
msg = _('merge halted after failed merge (see hg resolve)')
raise error.InterventionRequired(msg)
def _onfilemergefailure(ui):
action = ui.config('merge', 'on-failure')
if action == 'prompt':
msg = _('continue merge operation (yn)?' '$$ &Yes $$ &No')
if ui.promptchoice(msg, 0) == 1:
_haltmerge()
if action == 'halt':
_haltmerge()
# default action is 'continue', in which case we neither prompt nor halt
def _check(repo, r, ui, tool, fcd, files):
fd = fcd.path()
unused, unused, unused, back = files
if not r and (_toolbool(ui, tool, "checkconflicts") or
'conflicts' in _toollist(ui, tool, "check")):
if re.search("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data(),
re.MULTILINE):
r = 1
checked = False
if 'prompt' in _toollist(ui, tool, "check"):
checked = True
if ui.promptchoice(_("was merge of '%s' successful (yn)?"
"$$ &Yes $$ &No") % fd, 1):
r = 1
if not r and not checked and (_toolbool(ui, tool, "checkchanged") or
'changed' in
_toollist(ui, tool, "check")):
if back is not None and not fcd.cmp(back):
if ui.promptchoice(_(" output file %s appears unchanged\n"
"was merge successful (yn)?"
"$$ &Yes $$ &No") % fd, 1):
r = 1
if back is not None and _toolbool(ui, tool, "fixeol"):
_matcheol(_workingpath(repo, fcd), back)
return r
def _workingpath(repo, ctx):
return repo.wjoin(ctx.path())
def premerge(repo, wctx, mynode, orig, fcd, fco, fca, labels=None):
return _filemerge(True, repo, wctx, mynode, orig, fcd, fco, fca,
labels=labels)
def filemerge(repo, wctx, mynode, orig, fcd, fco, fca, labels=None):
return _filemerge(False, repo, wctx, mynode, orig, fcd, fco, fca,
labels=labels)
def loadinternalmerge(ui, extname, registrarobj):
"""Load internal merge tool from specified registrarobj
"""
for name, func in registrarobj._table.iteritems():
fullname = ':' + name
internals[fullname] = func
internals['internal:' + name] = func
internalsdoc[fullname] = func
# load built-in merge tools explicitly to setup internalsdoc
loadinternalmerge(None, None, internaltool)
# tell hggettext to extract docstrings from these functions:
i18nfunctions = internals.values()
|