3 # Copyright (c) 2012 Felipe Contreras
6 # Inspired by Rocco Rutte's hg-fast-export
8 # Just copy to your ~/bin, or anywhere in your $PATH.
9 # Then you can clone with:
10 # git clone hg::/path/to/mercurial/repo/
12 # For remote repositories a local clone is stored in
13 # "$GIT_DIR/hg/origin/clone/.hg/".
15 from mercurial
import hg
, ui
, bookmarks
, context
, encoding
, node
, error
, extensions
25 import urlparse
, hashlib
28 # If you want to switch to hg-git compatibility mode:
29 # git config --global remote-hg.hg-git-compat true
31 # If you are not in hg-git-compat mode and want to disable the tracking of
33 # git config --global remote-hg.track-branches false
35 # If you don't want to force pushes (and thus risk creating new remote heads):
36 # git config --global remote-hg.force-push false
38 # If you want the equivalent of hg's clone/pull--insecure option:
39 # git config remote-hg.insecure true
42 # Sensible defaults for git.
43 # hg bookmarks are exported as git branches, hg branches are prefixed
44 # with 'branches/', HEAD is a special case.
48 # Only hg bookmarks are exported as git branches.
49 # Commits are modified to preserve hg information and allow bidirectionality.
52 NAME_RE
= re
.compile('^([^<>]+)')
53 AUTHOR_RE
= re
.compile('^([^<>]+?)? ?<([^<>]*)>$')
54 EMAIL_RE
= re
.compile('^([^<>]+[^ \\\t<>])?\\b(?:[ \\t<>]*?)\\b([^ \\t<>]+@[^ \\t<>]+)')
55 AUTHOR_HG_RE
= re
.compile('^(.*?) ?<(.*?)(?:>(.+)?)?$')
56 RAW_AUTHOR_RE
= re
.compile('^(\w+) (?:(.+)? )?<(.*)> (\d+) ([+-]\d+)')
59 sys
.stderr
.write('ERROR: %s\n' % (msg
% args
))
63 sys
.stderr
.write('WARNING: %s\n' % (msg
% args
))
66 return 'l' in flags
and '120000' or 'x' in flags
and '100755' or '100644'
69 return '%+03d%02d' % (-tz
/ 3600, -tz
% 3600 / 60)
72 m
= { '100755': 'x', '120000': 'l' }
73 return m
.get(mode
, '')
76 return hg
.node
.hex(node
)
79 return ref
.replace('___', ' ')
82 return ref
.replace(' ', '___')
84 def get_config(config
):
85 cmd
= ['git', 'config', '--get', config
]
86 process
= subprocess
.Popen(cmd
, stdout
=subprocess
.PIPE
)
87 output
, _
= process
.communicate()
90 def get_config_bool(config
, default
=False):
91 value
= get_config(config
).rstrip('\n')
94 elif value
== "false":
101 def __init__(self
, path
):
111 if not os
.path
.exists(self
.path
):
114 tmp
= json
.load(open(self
.path
))
116 self
.tips
= tmp
['tips']
117 self
.marks
= tmp
['marks']
118 self
.last_mark
= tmp
['last-mark']
120 for rev
, mark
in self
.marks
.iteritems():
121 self
.rev_marks
[mark
] = int(rev
)
124 return { 'tips': self
.tips
, 'marks': self
.marks
, 'last-mark' : self
.last_mark
}
127 json
.dump(self
.dict(), open(self
.path
, 'w'))
130 return str(self
.dict())
132 def from_rev(self
, rev
):
133 return self
.marks
[str(rev
)]
135 def to_rev(self
, mark
):
136 return self
.rev_marks
[mark
]
140 return self
.last_mark
142 def get_mark(self
, rev
):
144 self
.marks
[str(rev
)] = self
.last_mark
145 return self
.last_mark
147 def new_mark(self
, rev
, mark
):
148 self
.marks
[str(rev
)] = mark
149 self
.rev_marks
[mark
] = rev
150 self
.last_mark
= mark
152 def is_marked(self
, rev
):
153 return str(rev
) in self
.marks
155 def get_tip(self
, branch
):
156 return self
.tips
.get(branch
, 0)
158 def set_tip(self
, branch
, tip
):
159 self
.tips
[branch
] = tip
163 def __init__(self
, repo
):
165 self
.line
= self
.get_line()
168 return sys
.stdin
.readline().strip()
170 def __getitem__(self
, i
):
171 return self
.line
.split()[i
]
173 def check(self
, word
):
174 return self
.line
.startswith(word
)
176 def each_block(self
, separator
):
177 while self
.line
!= separator
:
179 self
.line
= self
.get_line()
182 return self
.each_block('')
185 self
.line
= self
.get_line()
186 if self
.line
== 'done':
190 i
= self
.line
.index(':') + 1
191 return int(self
.line
[i
:])
194 if not self
.check('data'):
196 i
= self
.line
.index(' ') + 1
197 size
= int(self
.line
[i
:])
198 return sys
.stdin
.read(size
)
200 def get_author(self
):
204 m
= RAW_AUTHOR_RE
.match(self
.line
)
207 _
, name
, email
, date
, tz
= m
.groups()
208 if name
and 'ext:' in name
:
209 m
= re
.match('^(.+?) ext:\((.+)\)$', name
)
212 ex
= urllib
.unquote(m
.group(2))
214 if email
!= bad_mail
:
216 user
= '%s <%s>' % (name
, email
)
218 user
= '<%s>' % (email
)
226 tz
= ((tz
/ 100) * 3600) + ((tz
% 100) * 60)
227 return (user
, int(date
), -tz
)
229 def fix_file_path(path
):
230 if not os
.path
.isabs(path
):
232 return os
.path
.relpath(path
, '/')
234 def export_files(files
):
235 global marks
, filenodes
239 fid
= node
.hex(f
.filenode())
242 mark
= filenodes
[fid
]
244 mark
= marks
.next_mark()
245 filenodes
[fid
] = mark
249 print "mark :%u" % mark
250 print "data %d" % len(d
)
253 path
= fix_file_path(f
.path())
254 final
.append((gitmode(f
.flags()), mark
, path
))
258 def get_filechanges(repo
, ctx
, parent
):
263 # load earliest manifest first for caching reasons
264 prev
= repo
[parent
].manifest().copy()
269 if (cur
.flags(fn
) != prev
.flags(fn
) or cur
[fn
] != prev
[fn
]):
274 removed |
= set(prev
.keys())
276 return added | modified
, removed
278 def fixup_user_git(user
):
280 user
= user
.replace('"', '')
281 m
= AUTHOR_RE
.match(user
)
284 mail
= m
.group(2).strip()
286 m
= EMAIL_RE
.match(user
)
291 m
= NAME_RE
.match(user
)
293 name
= m
.group(1).strip()
296 def fixup_user_hg(user
):
298 # stole this from hg-git
299 return re
.sub('[<>\n]', '?', name
.lstrip('< ').rstrip('> '))
301 m
= AUTHOR_HG_RE
.match(user
)
303 name
= sanitize(m
.group(1))
304 mail
= sanitize(m
.group(2))
307 name
+= ' ext:(' + urllib
.quote(ex
) + ')'
309 name
= sanitize(user
)
317 def fixup_user(user
):
318 global mode
, bad_mail
321 name
, mail
= fixup_user_git(user
)
323 name
, mail
= fixup_user_hg(user
)
330 return '%s <%s>' % (name
, mail
)
332 def get_repo(url
, alias
):
336 myui
.setconfig('ui', 'interactive', 'off')
337 myui
.fout
= sys
.stderr
339 if get_config_bool('remote-hg.insecure'):
340 myui
.setconfig('web', 'cacerts', '')
343 mod
= extensions
.load(myui
, 'hgext.schemes', None)
349 repo
= hg
.repository(myui
, url
)
351 local_path
= os
.path
.join(dirname
, 'clone')
352 if not os
.path
.exists(local_path
):
354 peer
, dstpeer
= hg
.clone(myui
, {}, url
, local_path
, update
=True, pull
=True)
356 die('Repository error')
357 repo
= dstpeer
.local()
359 repo
= hg
.repository(myui
, local_path
)
361 peer
= hg
.peer(myui
, {}, url
)
363 die('Repository error')
364 repo
.pull(peer
, heads
=None, force
=True)
368 def rev_to_mark(rev
):
370 return marks
.from_rev(rev
)
372 def mark_to_rev(mark
):
374 return marks
.to_rev(mark
)
376 def export_ref(repo
, name
, kind
, head
):
377 global prefix
, marks
, mode
379 ename
= '%s/%s' % (kind
, name
)
380 tip
= marks
.get_tip(ename
)
382 revs
= xrange(tip
, head
.rev() + 1)
385 revs
= [rev
for rev
in revs
if not marks
.is_marked(rev
)]
390 (manifest
, user
, (time
, tz
), files
, desc
, extra
) = repo
.changelog
.read(c
.node())
391 rev_branch
= extra
['branch']
393 author
= "%s %d %s" % (fixup_user(user
), time
, gittz(tz
))
394 if 'committer' in extra
:
395 user
, time
, tz
= extra
['committer'].rsplit(' ', 2)
396 committer
= "%s %s %s" % (user
, time
, gittz(int(tz
)))
400 parents
= [p
for p
in repo
.changelog
.parentrevs(rev
) if p
>= 0]
402 if len(parents
) == 0:
403 modified
= c
.manifest().keys()
406 modified
, removed
= get_filechanges(repo
, c
, parents
[0])
413 if rev_branch
!= 'default':
414 extra_msg
+= 'branch : %s\n' % rev_branch
418 if f
not in c
.manifest():
420 rename
= c
.filectx(f
).renamed()
422 renames
.append((rename
[0], f
))
425 extra_msg
+= "rename : %s => %s\n" % e
427 for key
, value
in extra
.iteritems():
428 if key
in ('author', 'committer', 'encoding', 'message', 'branch', 'hg-git'):
431 extra_msg
+= "extra : %s : %s\n" % (key
, urllib
.quote(value
))
434 desc
+= '\n--HG--\n' + extra_msg
436 if len(parents
) == 0 and rev
:
437 print 'reset %s/%s' % (prefix
, ename
)
439 modified_final
= export_files(c
.filectx(f
) for f
in modified
)
441 print "commit %s/%s" % (prefix
, ename
)
442 print "mark :%d" % (marks
.get_mark(rev
))
443 print "author %s" % (author
)
444 print "committer %s" % (committer
)
445 print "data %d" % (len(desc
))
449 print "from :%s" % (rev_to_mark(parents
[0]))
451 print "merge :%s" % (rev_to_mark(parents
[1]))
453 for f
in modified_final
:
454 print "M %s :%u %s" % f
456 print "D %s" % (fix_file_path(f
))
460 if (count
% 100 == 0):
461 print "progress revision %d '%s' (%d/%d)" % (rev
, name
, count
, len(revs
))
463 # make sure the ref is updated
464 print "reset %s/%s" % (prefix
, ename
)
465 print "from :%u" % rev_to_mark(rev
)
468 marks
.set_tip(ename
, rev
)
470 def export_tag(repo
, tag
):
471 export_ref(repo
, tag
, 'tags', repo
[hgref(tag
)])
473 def export_bookmark(repo
, bmark
):
474 head
= bmarks
[hgref(bmark
)]
475 export_ref(repo
, bmark
, 'bookmarks', head
)
477 def export_branch(repo
, branch
):
478 tip
= get_branch_tip(repo
, branch
)
480 export_ref(repo
, branch
, 'branches', head
)
482 def export_head(repo
):
484 export_ref(repo
, g_head
[0], 'bookmarks', g_head
[1])
486 def do_capabilities(parser
):
487 global prefix
, dirname
491 print "refspec refs/heads/branches/*:%s/branches/*" % prefix
492 print "refspec refs/heads/*:%s/bookmarks/*" % prefix
493 print "refspec refs/tags/*:%s/tags/*" % prefix
495 path
= os
.path
.join(dirname
, 'marks-git')
497 if os
.path
.exists(path
):
498 print "*import-marks %s" % path
499 print "*export-marks %s" % path
503 def branch_tip(repo
, branch
):
504 # older versions of mercurial don't have this
505 if hasattr(repo
, 'branchtip'):
506 return repo
.branchtip(branch
)
508 return repo
.branchtags()[branch
]
510 def get_branch_tip(repo
, branch
):
513 heads
= branches
.get(hgref(branch
), None)
517 # verify there's only one head
519 warn("Branch '%s' has more than one head, consider merging" % branch
)
520 return branch_tip(repo
, hgref(branch
))
524 def list_head(repo
, cur
):
525 global g_head
, bmarks
527 head
= bookmarks
.readcurrent(repo
)
531 # fake bookmark from current branch
538 if head
== 'default':
543 print "@refs/heads/%s HEAD" % head
544 g_head
= (head
, node
)
547 global branches
, bmarks
, track_branches
550 for bmark
, node
in bookmarks
.listbookmarks(repo
).iteritems():
551 bmarks
[bmark
] = repo
[node
]
553 cur
= repo
.dirstate
.branch()
558 for branch
in repo
.branchmap():
559 heads
= repo
.branchheads(branch
)
561 branches
[branch
] = heads
563 for branch
in branches
:
564 print "? refs/heads/branches/%s" % gitref(branch
)
567 print "? refs/heads/%s" % gitref(bmark
)
569 for tag
, node
in repo
.tagslist():
572 print "? refs/tags/%s" % gitref(tag
)
576 def do_import(parser
):
579 path
= os
.path
.join(dirname
, 'marks-git')
582 if os
.path
.exists(path
):
583 print "feature import-marks=%s" % path
584 print "feature export-marks=%s" % path
587 tmp
= encoding
.encoding
588 encoding
.encoding
= 'utf-8'
590 # lets get all the import lines
591 while parser
.check('import'):
596 elif ref
.startswith('refs/heads/branches/'):
597 branch
= ref
[len('refs/heads/branches/'):]
598 export_branch(repo
, branch
)
599 elif ref
.startswith('refs/heads/'):
600 bmark
= ref
[len('refs/heads/'):]
601 export_bookmark(repo
, bmark
)
602 elif ref
.startswith('refs/tags/'):
603 tag
= ref
[len('refs/tags/'):]
604 export_tag(repo
, tag
)
608 encoding
.encoding
= tmp
612 def parse_blob(parser
):
616 mark
= parser
.get_mark()
618 data
= parser
.get_data()
619 blob_marks
[mark
] = data
622 def get_merge_files(repo
, p1
, p2
, files
):
623 for e
in repo
[p1
].files():
625 if e
not in repo
[p1
].manifest():
627 f
= { 'ctx' : repo
[p1
][e
] }
630 def parse_commit(parser
):
631 global marks
, blob_marks
, parsed_refs
634 from_mark
= merge_mark
= None
639 commit_mark
= parser
.get_mark()
641 author
= parser
.get_author()
643 committer
= parser
.get_author()
645 data
= parser
.get_data()
647 if parser
.check('from'):
648 from_mark
= parser
.get_mark()
650 if parser
.check('merge'):
651 merge_mark
= parser
.get_mark()
653 if parser
.check('merge'):
654 die('octopus merges are not supported yet')
656 # fast-export adds an extra newline
663 if parser
.check('M'):
664 t
, m
, mark_ref
, path
= line
.split(' ', 3)
665 mark
= int(mark_ref
[1:])
666 f
= { 'mode' : hgmode(m
), 'data' : blob_marks
[mark
] }
667 elif parser
.check('D'):
668 t
, path
= line
.split(' ', 1)
669 f
= { 'deleted' : True }
671 die('Unknown file command: %s' % line
)
674 def getfilectx(repo
, memctx
, f
):
680 is_exec
= of
['mode'] == 'x'
681 is_link
= of
['mode'] == 'l'
682 rename
= of
.get('rename', None)
683 return context
.memfilectx(f
, of
['data'],
684 is_link
, is_exec
, rename
)
688 user
, date
, tz
= author
691 if committer
!= author
:
692 extra
['committer'] = "%s %u %u" % committer
695 p1
= repo
.changelog
.node(mark_to_rev(from_mark
))
700 p2
= repo
.changelog
.node(mark_to_rev(merge_mark
))
705 # If files changed from any of the parents, hg wants to know, but in git if
706 # nothing changed from the first parent, nothing changed.
709 get_merge_files(repo
, p1
, p2
, files
)
711 # Check if the ref is supposed to be a named branch
712 if ref
.startswith('refs/heads/branches/'):
713 branch
= ref
[len('refs/heads/branches/'):]
714 extra
['branch'] = hgref(branch
)
717 i
= data
.find('\n--HG--\n')
719 tmp
= data
[i
+ len('\n--HG--\n'):].strip()
720 for k
, v
in [e
.split(' : ', 1) for e
in tmp
.split('\n')]:
722 old
, new
= v
.split(' => ', 1)
723 files
[new
]['rename'] = old
727 ek
, ev
= v
.split(' : ', 1)
728 extra
[ek
] = urllib
.unquote(ev
)
731 ctx
= context
.memctx(repo
, (p1
, p2
), data
,
732 files
.keys(), getfilectx
,
733 user
, (date
, tz
), extra
)
735 tmp
= encoding
.encoding
736 encoding
.encoding
= 'utf-8'
738 node
= repo
.commitctx(ctx
)
740 encoding
.encoding
= tmp
742 rev
= repo
[node
].rev()
744 parsed_refs
[ref
] = node
745 marks
.new_mark(rev
, commit_mark
)
747 def parse_reset(parser
):
753 if parser
.check('commit'):
756 if not parser
.check('from'):
758 from_mark
= parser
.get_mark()
761 node
= parser
.repo
.changelog
.node(mark_to_rev(from_mark
))
762 parsed_refs
[ref
] = node
764 def parse_tag(parser
):
767 from_mark
= parser
.get_mark()
769 tagger
= parser
.get_author()
771 data
= parser
.get_data()
774 parsed_tags
[name
] = (tagger
, data
)
776 def write_tag(repo
, tag
, node
, msg
, author
):
777 branch
= repo
[node
].branch()
778 tip
= branch_tip(repo
, branch
)
781 def getfilectx(repo
, memctx
, f
):
783 fctx
= tip
.filectx(f
)
785 except error
.ManifestLookupError
:
787 content
= data
+ "%s %s\n" % (hghex(node
), tag
)
788 return context
.memfilectx(f
, content
, False, False, None)
793 author
= (None, 0, 0)
794 user
, date
, tz
= author
796 ctx
= context
.memctx(repo
, (p1
, p2
), msg
,
797 ['.hgtags'], getfilectx
,
798 user
, (date
, tz
), {'branch' : branch
})
800 tmp
= encoding
.encoding
801 encoding
.encoding
= 'utf-8'
803 tagnode
= repo
.commitctx(ctx
)
805 encoding
.encoding
= tmp
809 def do_export(parser
):
810 global parsed_refs
, bmarks
, peer
816 for line
in parser
.each_block('done'):
817 if parser
.check('blob'):
819 elif parser
.check('commit'):
821 elif parser
.check('reset'):
823 elif parser
.check('tag'):
825 elif parser
.check('feature'):
828 die('unhandled export command: %s' % line
)
830 for ref
, node
in parsed_refs
.iteritems():
831 if ref
.startswith('refs/heads/branches'):
832 branch
= ref
[len('refs/heads/branches/'):]
833 if branch
in branches
and node
in branches
[branch
]:
837 elif ref
.startswith('refs/heads/'):
838 bmark
= ref
[len('refs/heads/'):]
839 p_bmarks
.append((bmark
, node
))
841 elif ref
.startswith('refs/tags/'):
842 tag
= ref
[len('refs/tags/'):]
844 author
, msg
= parsed_tags
.get(tag
, (None, None))
847 msg
= 'Added tag %s for changeset %s' % (tag
, hghex(node
[:6]));
848 write_tag(parser
.repo
, tag
, node
, msg
, author
)
850 fp
= parser
.repo
.opener('localtags', 'a')
851 fp
.write('%s %s\n' % (hghex(node
), tag
))
855 # transport-helper/fast-export bugs
859 parser
.repo
.push(peer
, force
=force_push
, newbranch
=True)
862 for bmark
, node
in p_bmarks
:
863 ref
= 'refs/heads/' + bmark
867 old
= bmarks
[bmark
].hex()
874 if bmark
== 'master' and 'master' not in parser
.repo
._bookmarks
:
878 elif bookmarks
.pushbookmark(parser
.repo
, bmark
, old
, new
):
882 print "error %s" % ref
886 rb
= peer
.listkeys('bookmarks')
887 old
= rb
.get(bmark
, '')
888 if not peer
.pushkey('bookmarks', bmark
, old
, new
):
889 print "error %s" % ref
896 def fix_path(alias
, repo
, orig_url
):
897 url
= urlparse
.urlparse(orig_url
, 'file')
898 if url
.scheme
!= 'file' or os
.path
.isabs(url
.path
):
900 abs_url
= urlparse
.urljoin("%s/" % os
.getcwd(), orig_url
)
901 cmd
= ['git', 'config', 'remote.%s.url' % alias
, "hg::%s" % abs_url
]
905 global prefix
, dirname
, branches
, bmarks
906 global marks
, blob_marks
, parsed_refs
907 global peer
, mode
, bad_mail
, bad_name
908 global track_branches
, force_push
, is_tmp
916 hg_git_compat
= get_config_bool('remote-hg.hg-git-compat')
917 track_branches
= get_config_bool('remote-hg.track-branches', True)
918 force_push
= get_config_bool('remote-hg.force-push')
922 bad_mail
= 'none@none'
931 alias
= hashlib
.sha1(alias
).hexdigest()
935 gitdir
= os
.environ
['GIT_DIR']
936 dirname
= os
.path
.join(gitdir
, 'hg', alias
)
945 repo
= get_repo(url
, alias
)
946 prefix
= 'refs/hg/%s' % alias
949 fix_path(alias
, peer
or repo
, url
)
951 if not os
.path
.exists(dirname
):
954 marks_path
= os
.path
.join(dirname
, 'marks-hg')
955 marks
= Marks(marks_path
)
957 parser
= Parser(repo
)
959 if parser
.check('capabilities'):
960 do_capabilities(parser
)
961 elif parser
.check('list'):
963 elif parser
.check('import'):
965 elif parser
.check('export'):
968 die('unhandled command: %s' % line
)
977 shutil
.rmtree(dirname
)
980 sys
.exit(main(sys
.argv
))