Andrew's git - gitweb.git/blob - contrib/remote-helpers/git-remote-hg

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