Andrew's git - gitweb.git/blob

3eb07dc93c1a30a0c7f8d4c5b07273bced3be5a0
   1#!/usr/bin/env python
   2#
   3# Copyright (c) 2012 Felipe Contreras
   4#
   5
   6# Inspired by Rocco Rutte's hg-fast-export
   7
   8# Just copy to your ~/bin, or anywhere in your $PATH.
   9# Then you can clone with:
  10# git clone hg::/path/to/mercurial/repo/
  11
  12from mercurial import hg, ui, bookmarks, context, util, encoding, node, error
  13
  14import re
  15import sys
  16import os
  17import json
  18import shutil
  19import subprocess
  20import urllib
  21
  22#
  23# If you want to switch to hg-git compatibility mode:
  24# git config --global remote-hg.hg-git-compat true
  25#
  26# If you are not in hg-git-compat mode and want to disable the tracking of
  27# named branches:
  28# git config --global remote-hg.track-branches false
  29#
  30# If you don't want to force pushes (and thus risk creating new remote heads):
  31# git config --global remote-hg.force-push false
  32#
  33# If you want the equivalent of hg's clone/pull--insecure option:
  34# git config remote-hg.insecure true
  35#
  36# git:
  37# Sensible defaults for git.
  38# hg bookmarks are exported as git branches, hg branches are prefixed
  39# with 'branches/', HEAD is a special case.
  40#
  41# hg:
  42# Emulate hg-git.
  43# Only hg bookmarks are exported as git branches.
  44# Commits are modified to preserve hg information and allow bidirectionality.
  45#
  46
  47NAME_RE = re.compile('^([^<>]+)')
  48AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]*)>$')
  49AUTHOR_HG_RE = re.compile('^(.*?) ?<(.*?)(?:>(.+)?)?$')
  50RAW_AUTHOR_RE = re.compile('^(\w+) (?:(.+)? )?<(.*)> (\d+) ([+-]\d+)')
  51
  52def die(msg, *args):
  53    sys.stderr.write('ERROR: %s\n' % (msg % args))
  54    sys.exit(1)
  55
  56def warn(msg, *args):
  57    sys.stderr.write('WARNING: %s\n' % (msg % args))
  58
  59def gitmode(flags):
  60    return 'l' in flags and '120000' or 'x' in flags and '100755' or '100644'
  61
  62def gittz(tz):
  63    return '%+03d%02d' % (-tz / 3600, -tz % 3600 / 60)
  64
  65def hgmode(mode):
  66    m = { '100755': 'x', '120000': 'l' }
  67    return m.get(mode, '')
  68
  69def hghex(node):
  70    return hg.node.hex(node)
  71
  72def get_config(config):
  73    cmd = ['git', 'config', '--get', config]
  74    process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
  75    output, _ = process.communicate()
  76    return output
  77
  78class Marks:
  79
  80    def __init__(self, path):
  81        self.path = path
  82        self.tips = {}
  83        self.marks = {}
  84        self.rev_marks = {}
  85        self.last_mark = 0
  86
  87        self.load()
  88
  89    def load(self):
  90        if not os.path.exists(self.path):
  91            return
  92
  93        tmp = json.load(open(self.path))
  94
  95        self.tips = tmp['tips']
  96        self.marks = tmp['marks']
  97        self.last_mark = tmp['last-mark']
  98
  99        for rev, mark in self.marks.iteritems():
 100            self.rev_marks[mark] = int(rev)
 101
 102    def dict(self):
 103        return { 'tips': self.tips, 'marks': self.marks, 'last-mark' : self.last_mark }
 104
 105    def store(self):
 106        json.dump(self.dict(), open(self.path, 'w'))
 107
 108    def __str__(self):
 109        return str(self.dict())
 110
 111    def from_rev(self, rev):
 112        return self.marks[str(rev)]
 113
 114    def to_rev(self, mark):
 115        return self.rev_marks[mark]
 116
 117    def get_mark(self, rev):
 118        self.last_mark += 1
 119        self.marks[str(rev)] = self.last_mark
 120        return self.last_mark
 121
 122    def new_mark(self, rev, mark):
 123        self.marks[str(rev)] = mark
 124        self.rev_marks[mark] = rev
 125        self.last_mark = mark
 126
 127    def is_marked(self, rev):
 128        return self.marks.has_key(str(rev))
 129
 130    def get_tip(self, branch):
 131        return self.tips.get(branch, 0)
 132
 133    def set_tip(self, branch, tip):
 134        self.tips[branch] = tip
 135
 136class Parser:
 137
 138    def __init__(self, repo):
 139        self.repo = repo
 140        self.line = self.get_line()
 141
 142    def get_line(self):
 143        return sys.stdin.readline().strip()
 144
 145    def __getitem__(self, i):
 146        return self.line.split()[i]
 147
 148    def check(self, word):
 149        return self.line.startswith(word)
 150
 151    def each_block(self, separator):
 152        while self.line != separator:
 153            yield self.line
 154            self.line = self.get_line()
 155
 156    def __iter__(self):
 157        return self.each_block('')
 158
 159    def next(self):
 160        self.line = self.get_line()
 161        if self.line == 'done':
 162            self.line = None
 163
 164    def get_mark(self):
 165        i = self.line.index(':') + 1
 166        return int(self.line[i:])
 167
 168    def get_data(self):
 169        if not self.check('data'):
 170            return None
 171        i = self.line.index(' ') + 1
 172        size = int(self.line[i:])
 173        return sys.stdin.read(size)
 174
 175    def get_author(self):
 176        global bad_mail
 177
 178        ex = None
 179        m = RAW_AUTHOR_RE.match(self.line)
 180        if not m:
 181            return None
 182        _, name, email, date, tz = m.groups()
 183        if name and 'ext:' in name:
 184            m = re.match('^(.+?) ext:\((.+)\)$', name)
 185            if m:
 186                name = m.group(1)
 187                ex = urllib.unquote(m.group(2))
 188
 189        if email != bad_mail:
 190            if name:
 191                user = '%s <%s>' % (name, email)
 192            else:
 193                user = '<%s>' % (email)
 194        else:
 195            user = name
 196
 197        if ex:
 198            user += ex
 199
 200        tz = int(tz)
 201        tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
 202        return (user, int(date), -tz)
 203
 204def export_file(fc):
 205    d = fc.data()
 206    print "M %s inline %s" % (gitmode(fc.flags()), fc.path())
 207    print "data %d" % len(d)
 208    print d
 209
 210def get_filechanges(repo, ctx, parent):
 211    modified = set()
 212    added = set()
 213    removed = set()
 214
 215    cur = ctx.manifest()
 216    prev = repo[parent].manifest().copy()
 217
 218    for fn in cur:
 219        if fn in prev:
 220            if (cur.flags(fn) != prev.flags(fn) or cur[fn] != prev[fn]):
 221                modified.add(fn)
 222            del prev[fn]
 223        else:
 224            added.add(fn)
 225    removed |= set(prev.keys())
 226
 227    return added | modified, removed
 228
 229def fixup_user_git(user):
 230    name = mail = None
 231    user = user.replace('"', '')
 232    m = AUTHOR_RE.match(user)
 233    if m:
 234        name = m.group(1)
 235        mail = m.group(2).strip()
 236    else:
 237        m = NAME_RE.match(user)
 238        if m:
 239            name = m.group(1).strip()
 240    return (name, mail)
 241
 242def fixup_user_hg(user):
 243    def sanitize(name):
 244        # stole this from hg-git
 245        return re.sub('[<>\n]', '?', name.lstrip('< ').rstrip('> '))
 246
 247    m = AUTHOR_HG_RE.match(user)
 248    if m:
 249        name = sanitize(m.group(1))
 250        mail = sanitize(m.group(2))
 251        ex = m.group(3)
 252        if ex:
 253            name += ' ext:(' + urllib.quote(ex) + ')'
 254    else:
 255        name = sanitize(user)
 256        if '@' in user:
 257            mail = name
 258        else:
 259            mail = None
 260
 261    return (name, mail)
 262
 263def fixup_user(user):
 264    global mode, bad_mail
 265
 266    if mode == 'git':
 267        name, mail = fixup_user_git(user)
 268    else:
 269        name, mail = fixup_user_hg(user)
 270
 271    if not name:
 272        name = bad_name
 273    if not mail:
 274        mail = bad_mail
 275
 276    return '%s <%s>' % (name, mail)
 277
 278def get_repo(url, alias):
 279    global dirname, peer
 280
 281    myui = ui.ui()
 282    myui.setconfig('ui', 'interactive', 'off')
 283    myui.fout = sys.stderr
 284
 285    try:
 286        if get_config('remote-hg.insecure') == 'true\n':
 287            myui.setconfig('web', 'cacerts', '')
 288    except subprocess.CalledProcessError:
 289        pass
 290
 291    if hg.islocal(url):
 292        repo = hg.repository(myui, url)
 293    else:
 294        local_path = os.path.join(dirname, 'clone')
 295        if not os.path.exists(local_path):
 296            try:
 297                peer, dstpeer = hg.clone(myui, {}, url, local_path, update=True, pull=True)
 298            except:
 299                die('Repository error')
 300            repo = dstpeer.local()
 301        else:
 302            repo = hg.repository(myui, local_path)
 303            try:
 304                peer = hg.peer(myui, {}, url)
 305            except:
 306                die('Repository error')
 307            repo.pull(peer, heads=None, force=True)
 308
 309    return repo
 310
 311def rev_to_mark(rev):
 312    global marks
 313    return marks.from_rev(rev)
 314
 315def mark_to_rev(mark):
 316    global marks
 317    return marks.to_rev(mark)
 318
 319def export_ref(repo, name, kind, head):
 320    global prefix, marks, mode
 321
 322    ename = '%s/%s' % (kind, name)
 323    tip = marks.get_tip(ename)
 324
 325    # mercurial takes too much time checking this
 326    if tip and tip == head.rev():
 327        # nothing to do
 328        return
 329    revs = xrange(tip, head.rev() + 1)
 330    count = 0
 331
 332    revs = [rev for rev in revs if not marks.is_marked(rev)]
 333
 334    for rev in revs:
 335
 336        c = repo[rev]
 337        (manifest, user, (time, tz), files, desc, extra) = repo.changelog.read(c.node())
 338        rev_branch = extra['branch']
 339
 340        author = "%s %d %s" % (fixup_user(user), time, gittz(tz))
 341        if 'committer' in extra:
 342            user, time, tz = extra['committer'].rsplit(' ', 2)
 343            committer = "%s %s %s" % (user, time, gittz(int(tz)))
 344        else:
 345            committer = author
 346
 347        parents = [p for p in repo.changelog.parentrevs(rev) if p >= 0]
 348
 349        if len(parents) == 0:
 350            modified = c.manifest().keys()
 351            removed = []
 352        else:
 353            modified, removed = get_filechanges(repo, c, parents[0])
 354
 355        if mode == 'hg':
 356            extra_msg = ''
 357
 358            if rev_branch != 'default':
 359                extra_msg += 'branch : %s\n' % rev_branch
 360
 361            renames = []
 362            for f in c.files():
 363                if f not in c.manifest():
 364                    continue
 365                rename = c.filectx(f).renamed()
 366                if rename:
 367                    renames.append((rename[0], f))
 368
 369            for e in renames:
 370                extra_msg += "rename : %s => %s\n" % e
 371
 372            for key, value in extra.iteritems():
 373                if key in ('author', 'committer', 'encoding', 'message', 'branch', 'hg-git'):
 374                    continue
 375                else:
 376                    extra_msg += "extra : %s : %s\n" % (key, urllib.quote(value))
 377
 378            desc += '\n'
 379            if extra_msg:
 380                desc += '\n--HG--\n' + extra_msg
 381
 382        if len(parents) == 0 and rev:
 383            print 'reset %s/%s' % (prefix, ename)
 384
 385        print "commit %s/%s" % (prefix, ename)
 386        print "mark :%d" % (marks.get_mark(rev))
 387        print "author %s" % (author)
 388        print "committer %s" % (committer)
 389        print "data %d" % (len(desc))
 390        print desc
 391
 392        if len(parents) > 0:
 393            print "from :%s" % (rev_to_mark(parents[0]))
 394            if len(parents) > 1:
 395                print "merge :%s" % (rev_to_mark(parents[1]))
 396
 397        for f in modified:
 398            export_file(c.filectx(f))
 399        for f in removed:
 400            print "D %s" % (f)
 401        print
 402
 403        count += 1
 404        if (count % 100 == 0):
 405            print "progress revision %d '%s' (%d/%d)" % (rev, name, count, len(revs))
 406            print "#############################################################"
 407
 408    # make sure the ref is updated
 409    print "reset %s/%s" % (prefix, ename)
 410    print "from :%u" % rev_to_mark(rev)
 411    print
 412
 413    marks.set_tip(ename, rev)
 414
 415def export_tag(repo, tag):
 416    export_ref(repo, tag, 'tags', repo[tag])
 417
 418def export_bookmark(repo, bmark):
 419    head = bmarks[bmark]
 420    export_ref(repo, bmark, 'bookmarks', head)
 421
 422def export_branch(repo, branch):
 423    tip = get_branch_tip(repo, branch)
 424    head = repo[tip]
 425    export_ref(repo, branch, 'branches', head)
 426
 427def export_head(repo):
 428    global g_head
 429    export_ref(repo, g_head[0], 'bookmarks', g_head[1])
 430
 431def do_capabilities(parser):
 432    global prefix, dirname
 433
 434    print "import"
 435    print "export"
 436    print "refspec refs/heads/branches/*:%s/branches/*" % prefix
 437    print "refspec refs/heads/*:%s/bookmarks/*" % prefix
 438    print "refspec refs/tags/*:%s/tags/*" % prefix
 439
 440    path = os.path.join(dirname, 'marks-git')
 441
 442    if os.path.exists(path):
 443        print "*import-marks %s" % path
 444    print "*export-marks %s" % path
 445
 446    print
 447
 448def get_branch_tip(repo, branch):
 449    global branches
 450
 451    heads = branches.get(branch, None)
 452    if not heads:
 453        return None
 454
 455    # verify there's only one head
 456    if (len(heads) > 1):
 457        warn("Branch '%s' has more than one head, consider merging" % branch)
 458        # older versions of mercurial don't have this
 459        if hasattr(repo, "branchtip"):
 460            return repo.branchtip(branch)
 461
 462    return heads[0]
 463
 464def list_head(repo, cur):
 465    global g_head, bmarks
 466
 467    head = bookmarks.readcurrent(repo)
 468    if head:
 469        node = repo[head]
 470    else:
 471        # fake bookmark from current branch
 472        head = cur
 473        node = repo['.']
 474        if not node:
 475            node = repo['tip']
 476        if not node:
 477            return
 478        if head == 'default':
 479            head = 'master'
 480        bmarks[head] = node
 481
 482    print "@refs/heads/%s HEAD" % head
 483    g_head = (head, node)
 484
 485def do_list(parser):
 486    global branches, bmarks, mode, track_branches
 487
 488    repo = parser.repo
 489    for bmark, node in bookmarks.listbookmarks(repo).iteritems():
 490        bmarks[bmark] = repo[node]
 491
 492    cur = repo.dirstate.branch()
 493
 494    list_head(repo, cur)
 495
 496    if track_branches:
 497        for branch in repo.branchmap():
 498            heads = repo.branchheads(branch)
 499            if len(heads):
 500                branches[branch] = heads
 501
 502        for branch in branches:
 503            print "? refs/heads/branches/%s" % branch
 504
 505    for bmark in bmarks:
 506        print "? refs/heads/%s" % bmark
 507
 508    for tag, node in repo.tagslist():
 509        if tag == 'tip':
 510            continue
 511        print "? refs/tags/%s" % tag
 512
 513    print
 514
 515def do_import(parser):
 516    repo = parser.repo
 517
 518    path = os.path.join(dirname, 'marks-git')
 519
 520    print "feature done"
 521    if os.path.exists(path):
 522        print "feature import-marks=%s" % path
 523    print "feature export-marks=%s" % path
 524    sys.stdout.flush()
 525
 526    tmp = encoding.encoding
 527    encoding.encoding = 'utf-8'
 528
 529    # lets get all the import lines
 530    while parser.check('import'):
 531        ref = parser[1]
 532
 533        if (ref == 'HEAD'):
 534            export_head(repo)
 535        elif ref.startswith('refs/heads/branches/'):
 536            branch = ref[len('refs/heads/branches/'):]
 537            export_branch(repo, branch)
 538        elif ref.startswith('refs/heads/'):
 539            bmark = ref[len('refs/heads/'):]
 540            export_bookmark(repo, bmark)
 541        elif ref.startswith('refs/tags/'):
 542            tag = ref[len('refs/tags/'):]
 543            export_tag(repo, tag)
 544
 545        parser.next()
 546
 547    encoding.encoding = tmp
 548
 549    print 'done'
 550
 551def parse_blob(parser):
 552    global blob_marks
 553
 554    parser.next()
 555    mark = parser.get_mark()
 556    parser.next()
 557    data = parser.get_data()
 558    blob_marks[mark] = data
 559    parser.next()
 560
 561def get_merge_files(repo, p1, p2, files):
 562    for e in repo[p1].files():
 563        if e not in files:
 564            if e not in repo[p1].manifest():
 565                continue
 566            f = { 'ctx' : repo[p1][e] }
 567            files[e] = f
 568
 569def parse_commit(parser):
 570    global marks, blob_marks, parsed_refs
 571    global mode
 572
 573    from_mark = merge_mark = None
 574
 575    ref = parser[1]
 576    parser.next()
 577
 578    commit_mark = parser.get_mark()
 579    parser.next()
 580    author = parser.get_author()
 581    parser.next()
 582    committer = parser.get_author()
 583    parser.next()
 584    data = parser.get_data()
 585    parser.next()
 586    if parser.check('from'):
 587        from_mark = parser.get_mark()
 588        parser.next()
 589    if parser.check('merge'):
 590        merge_mark = parser.get_mark()
 591        parser.next()
 592        if parser.check('merge'):
 593            die('octopus merges are not supported yet')
 594
 595    files = {}
 596
 597    for line in parser:
 598        if parser.check('M'):
 599            t, m, mark_ref, path = line.split(' ', 3)
 600            mark = int(mark_ref[1:])
 601            f = { 'mode' : hgmode(m), 'data' : blob_marks[mark] }
 602        elif parser.check('D'):
 603            t, path = line.split(' ', 1)
 604            f = { 'deleted' : True }
 605        else:
 606            die('Unknown file command: %s' % line)
 607        files[path] = f
 608
 609    def getfilectx(repo, memctx, f):
 610        of = files[f]
 611        if 'deleted' in of:
 612            raise IOError
 613        if 'ctx' in of:
 614            return of['ctx']
 615        is_exec = of['mode'] == 'x'
 616        is_link = of['mode'] == 'l'
 617        rename = of.get('rename', None)
 618        return context.memfilectx(f, of['data'],
 619                is_link, is_exec, rename)
 620
 621    repo = parser.repo
 622
 623    user, date, tz = author
 624    extra = {}
 625
 626    if committer != author:
 627        extra['committer'] = "%s %u %u" % committer
 628
 629    if from_mark:
 630        p1 = repo.changelog.node(mark_to_rev(from_mark))
 631    else:
 632        p1 = '\0' * 20
 633
 634    if merge_mark:
 635        p2 = repo.changelog.node(mark_to_rev(merge_mark))
 636    else:
 637        p2 = '\0' * 20
 638
 639    #
 640    # If files changed from any of the parents, hg wants to know, but in git if
 641    # nothing changed from the first parent, nothing changed.
 642    #
 643    if merge_mark:
 644        get_merge_files(repo, p1, p2, files)
 645
 646    # Check if the ref is supposed to be a named branch
 647    if ref.startswith('refs/heads/branches/'):
 648        extra['branch'] = ref[len('refs/heads/branches/'):]
 649
 650    if mode == 'hg':
 651        i = data.find('\n--HG--\n')
 652        if i >= 0:
 653            tmp = data[i + len('\n--HG--\n'):].strip()
 654            for k, v in [e.split(' : ', 1) for e in tmp.split('\n')]:
 655                if k == 'rename':
 656                    old, new = v.split(' => ', 1)
 657                    files[new]['rename'] = old
 658                elif k == 'branch':
 659                    extra[k] = v
 660                elif k == 'extra':
 661                    ek, ev = v.split(' : ', 1)
 662                    extra[ek] = urllib.unquote(ev)
 663            data = data[:i]
 664
 665    ctx = context.memctx(repo, (p1, p2), data,
 666            files.keys(), getfilectx,
 667            user, (date, tz), extra)
 668
 669    tmp = encoding.encoding
 670    encoding.encoding = 'utf-8'
 671
 672    node = repo.commitctx(ctx)
 673
 674    encoding.encoding = tmp
 675
 676    rev = repo[node].rev()
 677
 678    parsed_refs[ref] = node
 679    marks.new_mark(rev, commit_mark)
 680
 681def parse_reset(parser):
 682    global parsed_refs
 683
 684    ref = parser[1]
 685    parser.next()
 686    # ugh
 687    if parser.check('commit'):
 688        parse_commit(parser)
 689        return
 690    if not parser.check('from'):
 691        return
 692    from_mark = parser.get_mark()
 693    parser.next()
 694
 695    node = parser.repo.changelog.node(mark_to_rev(from_mark))
 696    parsed_refs[ref] = node
 697
 698def parse_tag(parser):
 699    name = parser[1]
 700    parser.next()
 701    from_mark = parser.get_mark()
 702    parser.next()
 703    tagger = parser.get_author()
 704    parser.next()
 705    data = parser.get_data()
 706    parser.next()
 707
 708    # nothing to do
 709
 710def do_export(parser):
 711    global parsed_refs, bmarks, peer
 712
 713    p_bmarks = []
 714
 715    parser.next()
 716
 717    for line in parser.each_block('done'):
 718        if parser.check('blob'):
 719            parse_blob(parser)
 720        elif parser.check('commit'):
 721            parse_commit(parser)
 722        elif parser.check('reset'):
 723            parse_reset(parser)
 724        elif parser.check('tag'):
 725            parse_tag(parser)
 726        elif parser.check('feature'):
 727            pass
 728        else:
 729            die('unhandled export command: %s' % line)
 730
 731    for ref, node in parsed_refs.iteritems():
 732        if ref.startswith('refs/heads/branches'):
 733            print "ok %s" % ref
 734        elif ref.startswith('refs/heads/'):
 735            bmark = ref[len('refs/heads/'):]
 736            p_bmarks.append((bmark, node))
 737            continue
 738        elif ref.startswith('refs/tags/'):
 739            tag = ref[len('refs/tags/'):]
 740            if mode == 'git':
 741                msg = 'Added tag %s for changeset %s' % (tag, hghex(node[:6]));
 742                parser.repo.tag([tag], node, msg, False, None, {})
 743            else:
 744                parser.repo.tag([tag], node, None, True, None, {})
 745            print "ok %s" % ref
 746        else:
 747            # transport-helper/fast-export bugs
 748            continue
 749
 750    if peer:
 751        parser.repo.push(peer, force=force_push)
 752
 753    # handle bookmarks
 754    for bmark, node in p_bmarks:
 755        ref = 'refs/heads/' + bmark
 756        new = hghex(node)
 757
 758        if bmark in bmarks:
 759            old = bmarks[bmark].hex()
 760        else:
 761            old = ''
 762
 763        if bmark == 'master' and 'master' not in parser.repo._bookmarks:
 764            # fake bookmark
 765            pass
 766        elif bookmarks.pushbookmark(parser.repo, bmark, old, new):
 767            # updated locally
 768            pass
 769        else:
 770            print "error %s" % ref
 771            continue
 772
 773        if peer:
 774            if not peer.pushkey('bookmarks', bmark, old, new):
 775                print "error %s" % ref
 776                continue
 777
 778        print "ok %s" % ref
 779
 780    print
 781
 782def fix_path(alias, repo, orig_url):
 783    repo_url = util.url(repo.url())
 784    url = util.url(orig_url)
 785    if str(url) == str(repo_url):
 786        return
 787    cmd = ['git', 'config', 'remote.%s.url' % alias, "hg::%s" % repo_url]
 788    subprocess.call(cmd)
 789
 790def main(args):
 791    global prefix, dirname, branches, bmarks
 792    global marks, blob_marks, parsed_refs
 793    global peer, mode, bad_mail, bad_name
 794    global track_branches, force_push
 795
 796    alias = args[1]
 797    url = args[2]
 798    peer = None
 799
 800    hg_git_compat = False
 801    track_branches = True
 802    force_push = True
 803
 804    try:
 805        if get_config('remote-hg.hg-git-compat') == 'true\n':
 806            hg_git_compat = True
 807            track_branches = False
 808        if get_config('remote-hg.track-branches') == 'false\n':
 809            track_branches = False
 810        if get_config('remote-hg.force-push') == 'false\n':
 811            force_push = False
 812    except subprocess.CalledProcessError:
 813        pass
 814
 815    if hg_git_compat:
 816        mode = 'hg'
 817        bad_mail = 'none@none'
 818        bad_name = ''
 819    else:
 820        mode = 'git'
 821        bad_mail = 'unknown'
 822        bad_name = 'Unknown'
 823
 824    if alias[4:] == url:
 825        is_tmp = True
 826        alias = util.sha1(alias).hexdigest()
 827    else:
 828        is_tmp = False
 829
 830    gitdir = os.environ['GIT_DIR']
 831    dirname = os.path.join(gitdir, 'hg', alias)
 832    branches = {}
 833    bmarks = {}
 834    blob_marks = {}
 835    parsed_refs = {}
 836
 837    repo = get_repo(url, alias)
 838    prefix = 'refs/hg/%s' % alias
 839
 840    if not is_tmp:
 841        fix_path(alias, peer or repo, url)
 842
 843    if not os.path.exists(dirname):
 844        os.makedirs(dirname)
 845
 846    marks_path = os.path.join(dirname, 'marks-hg')
 847    marks = Marks(marks_path)
 848
 849    parser = Parser(repo)
 850    for line in parser:
 851        if parser.check('capabilities'):
 852            do_capabilities(parser)
 853        elif parser.check('list'):
 854            do_list(parser)
 855        elif parser.check('import'):
 856            do_import(parser)
 857        elif parser.check('export'):
 858            do_export(parser)
 859        else:
 860            die('unhandled command: %s' % line)
 861        sys.stdout.flush()
 862
 863    if not is_tmp:
 864        marks.store()
 865    else:
 866        shutil.rmtree(dirname)
 867
 868sys.exit(main(sys.argv))