# Then you can clone with:
# git clone hg::/path/to/mercurial/repo/
-from mercurial import hg, ui, bookmarks
+from mercurial import hg, ui, bookmarks, context, util, encoding
import re
import sys
import os
import json
+import shutil
+import subprocess
+import urllib
+
+#
+# If you want to switch to hg-git compatibility mode:
+# git config --global remote-hg.hg-git-compat true
+#
+# git:
+# Sensible defaults for git.
+# hg bookmarks are exported as git branches, hg branches are prefixed
+# with 'branches/', HEAD is a special case.
+#
+# hg:
+# Emulate hg-git.
+# Only hg bookmarks are exported as git branches.
+# Commits are modified to preserve hg information and allow biridectionality.
+#
NAME_RE = re.compile('^([^<>]+)')
-AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]+)>$')
+AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]*)>$')
+AUTHOR_HG_RE = re.compile('^(.*?) ?<(.*?)(?:>(.+)?)?$')
+RAW_AUTHOR_RE = re.compile('^(\w+) (?:(.+)? )?<(.*)> (\d+) ([+-]\d+)')
def die(msg, *args):
sys.stderr.write('ERROR: %s\n' % (msg % args))
def gittz(tz):
return '%+03d%02d' % (-tz / 3600, -tz % 3600 / 60)
+def hgmode(mode):
+ m = { '0100755': 'x', '0120000': 'l' }
+ return m.get(mode, '')
+
+def get_config(config):
+ cmd = ['git', 'config', '--get', config]
+ process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+ output, _ = process.communicate()
+ return output
+
class Marks:
def __init__(self, path):
self.path = path
self.tips = {}
self.marks = {}
+ self.rev_marks = {}
self.last_mark = 0
self.load()
self.marks = tmp['marks']
self.last_mark = tmp['last-mark']
+ for rev, mark in self.marks.iteritems():
+ self.rev_marks[mark] = int(rev)
+
def dict(self):
return { 'tips': self.tips, 'marks': self.marks, 'last-mark' : self.last_mark }
def from_rev(self, rev):
return self.marks[str(rev)]
+ def to_rev(self, mark):
+ return self.rev_marks[mark]
+
def get_mark(self, rev):
self.last_mark += 1
self.marks[str(rev)] = self.last_mark
return self.last_mark
+ def new_mark(self, rev, mark):
+ self.marks[str(rev)] = mark
+ self.rev_marks[mark] = rev
+ self.last_mark = mark
+
def is_marked(self, rev):
return self.marks.has_key(str(rev))
if self.line == 'done':
self.line = None
+ def get_mark(self):
+ i = self.line.index(':') + 1
+ return int(self.line[i:])
+
+ def get_data(self):
+ if not self.check('data'):
+ return None
+ i = self.line.index(' ') + 1
+ size = int(self.line[i:])
+ return sys.stdin.read(size)
+
+ def get_author(self):
+ global bad_mail
+
+ ex = None
+ m = RAW_AUTHOR_RE.match(self.line)
+ if not m:
+ return None
+ _, name, email, date, tz = m.groups()
+ if name and 'ext:' in name:
+ m = re.match('^(.+?) ext:\((.+)\)$', name)
+ if m:
+ name = m.group(1)
+ ex = urllib.unquote(m.group(2))
+
+ if email != bad_mail:
+ if name:
+ user = '%s <%s>' % (name, email)
+ else:
+ user = '<%s>' % (email)
+ else:
+ user = name
+
+ if ex:
+ user += ex
+
+ tz = int(tz)
+ tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
+ return (user, int(date), -tz)
+
def export_file(fc):
d = fc.data()
print "M %s inline %s" % (gitmode(fc.flags()), fc.path())
return added | modified, removed
-def fixup_user(user):
- user = user.replace('"', '')
+def fixup_user_git(user):
name = mail = None
+ user = user.replace('"', '')
m = AUTHOR_RE.match(user)
if m:
name = m.group(1)
m = NAME_RE.match(user)
if m:
name = m.group(1).strip()
+ return (name, mail)
+
+def fixup_user_hg(user):
+ def sanitize(name):
+ # stole this from hg-git
+ return re.sub('[<>\n]', '?', name.lstrip('< ').rstrip('> '))
+
+ m = AUTHOR_HG_RE.match(user)
+ if m:
+ name = sanitize(m.group(1))
+ mail = sanitize(m.group(2))
+ ex = m.group(3)
+ if ex:
+ name += ' ext:(' + urllib.quote(ex) + ')'
+ else:
+ name = sanitize(user)
+ if '@' in user:
+ mail = name
+ else:
+ mail = None
+
+ return (name, mail)
+
+def fixup_user(user):
+ global mode, bad_mail
+
+ if mode == 'git':
+ name, mail = fixup_user_git(user)
+ else:
+ name, mail = fixup_user_hg(user)
if not name:
- name = 'Unknown'
+ name = bad_name
if not mail:
- mail = 'unknown'
+ mail = bad_mail
return '%s <%s>' % (name, mail)
def get_repo(url, alias):
- global dirname
+ global dirname, peer
myui = ui.ui()
myui.setconfig('ui', 'interactive', 'off')
global marks
return marks.from_rev(rev)
+def mark_to_rev(mark):
+ global marks
+ return marks.to_rev(mark)
+
def export_ref(repo, name, kind, head):
- global prefix, marks
+ global prefix, marks, mode
ename = '%s/%s' % (kind, name)
tip = marks.get_tip(ename)
if tip and tip == head.rev():
# nothing to do
return
- revs = repo.revs('%u:%u' % (tip, head))
+ revs = xrange(tip, head.rev() + 1)
count = 0
revs = [rev for rev in revs if not marks.is_marked(rev)]
else:
modified, removed = get_filechanges(repo, c, parents[0])
+ if mode == 'hg':
+ extra_msg = ''
+
+ if rev_branch != 'default':
+ extra_msg += 'branch : %s\n' % rev_branch
+
+ renames = []
+ for f in c.files():
+ if f not in c.manifest():
+ continue
+ rename = c.filectx(f).renamed()
+ if rename:
+ renames.append((rename[0], f))
+
+ for e in renames:
+ extra_msg += "rename : %s => %s\n" % e
+
+ for key, value in extra.iteritems():
+ if key in ('author', 'committer', 'encoding', 'message', 'branch', 'hg-git'):
+ continue
+ else:
+ extra_msg += "extra : %s : %s\n" % (key, urllib.quote(value))
+
+ desc += '\n'
+ if extra_msg:
+ desc += '\n--HG--\n' + extra_msg
+
if len(parents) == 0 and rev:
print 'reset %s/%s' % (prefix, ename)
global prefix, dirname
print "import"
+ print "export"
print "refspec refs/heads/branches/*:%s/branches/*" % prefix
print "refspec refs/heads/*:%s/bookmarks/*" % prefix
print "refspec refs/tags/*:%s/tags/*" % prefix
+
+ path = os.path.join(dirname, 'marks-git')
+
+ if os.path.exists(path):
+ print "*import-marks %s" % path
+ print "*export-marks %s" % path
+
print
def get_branch_tip(repo, branch):
return heads[0]
def list_head(repo, cur):
- global g_head
+ global g_head, bmarks
head = bookmarks.readcurrent(repo)
- if not head:
- return
- node = repo[head]
+ if head:
+ node = repo[head]
+ else:
+ # fake bookmark from current branch
+ head = cur
+ node = repo['.']
+ if not node:
+ node = repo['tip']
+ if not node:
+ return
+ if head == 'default':
+ head = 'master'
+ bmarks[head] = node
+
print "@refs/heads/%s HEAD" % head
g_head = (head, node)
def do_list(parser):
- global branches, bmarks
+ global branches, bmarks, mode, track_branches
repo = parser.repo
- for branch in repo.branchmap():
- heads = repo.branchheads(branch)
- if len(heads):
- branches[branch] = heads
-
for bmark, node in bookmarks.listbookmarks(repo).iteritems():
bmarks[bmark] = repo[node]
cur = repo.dirstate.branch()
list_head(repo, cur)
- for branch in branches:
- print "? refs/heads/branches/%s" % branch
+
+ if track_branches:
+ for branch in repo.branchmap():
+ heads = repo.branchheads(branch)
+ if len(heads):
+ branches[branch] = heads
+
+ for branch in branches:
+ print "? refs/heads/branches/%s" % branch
+
for bmark in bmarks:
print "? refs/heads/%s" % bmark
print "feature export-marks=%s" % path
sys.stdout.flush()
+ tmp = encoding.encoding
+ encoding.encoding = 'utf-8'
+
# lets get all the import lines
while parser.check('import'):
ref = parser[1]
parser.next()
+ encoding.encoding = tmp
+
print 'done'
+def parse_blob(parser):
+ global blob_marks
+
+ parser.next()
+ mark = parser.get_mark()
+ parser.next()
+ data = parser.get_data()
+ blob_marks[mark] = data
+ parser.next()
+ return
+
+def get_merge_files(repo, p1, p2, files):
+ for e in repo[p1].files():
+ if e not in files:
+ if e not in repo[p1].manifest():
+ continue
+ f = { 'ctx' : repo[p1][e] }
+ files[e] = f
+
+def parse_commit(parser):
+ global marks, blob_marks, bmarks, parsed_refs
+ global mode
+
+ from_mark = merge_mark = None
+
+ ref = parser[1]
+ parser.next()
+
+ commit_mark = parser.get_mark()
+ parser.next()
+ author = parser.get_author()
+ parser.next()
+ committer = parser.get_author()
+ parser.next()
+ data = parser.get_data()
+ parser.next()
+ if parser.check('from'):
+ from_mark = parser.get_mark()
+ parser.next()
+ if parser.check('merge'):
+ merge_mark = parser.get_mark()
+ parser.next()
+ if parser.check('merge'):
+ die('octopus merges are not supported yet')
+
+ files = {}
+
+ for line in parser:
+ if parser.check('M'):
+ t, m, mark_ref, path = line.split(' ', 3)
+ mark = int(mark_ref[1:])
+ f = { 'mode' : hgmode(m), 'data' : blob_marks[mark] }
+ elif parser.check('D'):
+ t, path = line.split(' ')
+ f = { 'deleted' : True }
+ else:
+ die('Unknown file command: %s' % line)
+ files[path] = f
+
+ def getfilectx(repo, memctx, f):
+ of = files[f]
+ if 'deleted' in of:
+ raise IOError
+ if 'ctx' in of:
+ return of['ctx']
+ is_exec = of['mode'] == 'x'
+ is_link = of['mode'] == 'l'
+ rename = of.get('rename', None)
+ return context.memfilectx(f, of['data'],
+ is_link, is_exec, rename)
+
+ repo = parser.repo
+
+ user, date, tz = author
+ extra = {}
+
+ if committer != author:
+ extra['committer'] = "%s %u %u" % committer
+
+ if from_mark:
+ p1 = repo.changelog.node(mark_to_rev(from_mark))
+ else:
+ p1 = '\0' * 20
+
+ if merge_mark:
+ p2 = repo.changelog.node(mark_to_rev(merge_mark))
+ else:
+ p2 = '\0' * 20
+
+ #
+ # If files changed from any of the parents, hg wants to know, but in git if
+ # nothing changed from the first parent, nothing changed.
+ #
+ if merge_mark:
+ get_merge_files(repo, p1, p2, files)
+
+ if mode == 'hg':
+ i = data.find('\n--HG--\n')
+ if i >= 0:
+ tmp = data[i + len('\n--HG--\n'):].strip()
+ for k, v in [e.split(' : ') for e in tmp.split('\n')]:
+ if k == 'rename':
+ old, new = v.split(' => ', 1)
+ files[new]['rename'] = old
+ elif k == 'branch':
+ extra[k] = v
+ elif k == 'extra':
+ ek, ev = v.split(' : ', 1)
+ extra[ek] = urllib.unquote(ev)
+ data = data[:i]
+
+ ctx = context.memctx(repo, (p1, p2), data,
+ files.keys(), getfilectx,
+ user, (date, tz), extra)
+
+ tmp = encoding.encoding
+ encoding.encoding = 'utf-8'
+
+ node = repo.commitctx(ctx)
+
+ encoding.encoding = tmp
+
+ rev = repo[node].rev()
+
+ parsed_refs[ref] = node
+
+ marks.new_mark(rev, commit_mark)
+
+def parse_reset(parser):
+ ref = parser[1]
+ parser.next()
+ # ugh
+ if parser.check('commit'):
+ parse_commit(parser)
+ return
+ if not parser.check('from'):
+ return
+ from_mark = parser.get_mark()
+ parser.next()
+
+ node = parser.repo.changelog.node(mark_to_rev(from_mark))
+ parsed_refs[ref] = node
+
+def parse_tag(parser):
+ name = parser[1]
+ parser.next()
+ from_mark = parser.get_mark()
+ parser.next()
+ tagger = parser.get_author()
+ parser.next()
+ data = parser.get_data()
+ parser.next()
+
+ # nothing to do
+
+def do_export(parser):
+ global parsed_refs, bmarks, peer
+
+ parser.next()
+
+ for line in parser.each_block('done'):
+ if parser.check('blob'):
+ parse_blob(parser)
+ elif parser.check('commit'):
+ parse_commit(parser)
+ elif parser.check('reset'):
+ parse_reset(parser)
+ elif parser.check('tag'):
+ parse_tag(parser)
+ elif parser.check('feature'):
+ pass
+ else:
+ die('unhandled export command: %s' % line)
+
+ for ref, node in parsed_refs.iteritems():
+ if ref.startswith('refs/heads/branches'):
+ pass
+ elif ref.startswith('refs/heads/'):
+ bmark = ref[len('refs/heads/'):]
+ if bmark in bmarks:
+ old = bmarks[bmark].hex()
+ else:
+ old = ''
+ if not bookmarks.pushbookmark(parser.repo, bmark, old, node):
+ continue
+ elif ref.startswith('refs/tags/'):
+ tag = ref[len('refs/tags/'):]
+ parser.repo.tag([tag], node, None, True, None, {})
+ else:
+ # transport-helper/fast-export bugs
+ continue
+ print "ok %s" % ref
+
+ print
+
+ if peer:
+ parser.repo.push(peer, force=False)
+
def main(args):
- global prefix, dirname, marks, branches, bmarks
+ global prefix, dirname, branches, bmarks
+ global marks, blob_marks, parsed_refs
+ global peer, mode, bad_mail, bad_name
+ global track_branches
alias = args[1]
url = args[2]
+ peer = None
+
+ hg_git_compat = False
+ track_branches = True
+ try:
+ if get_config('remote-hg.hg-git-compat') == 'true\n':
+ hg_git_compat = True
+ track_branches = False
+ if get_config('remote-hg.track-branches') == 'false\n':
+ track_branches = False
+ except subprocess.CalledProcessError:
+ pass
+
+ if hg_git_compat:
+ mode = 'hg'
+ bad_mail = 'none@none'
+ bad_name = ''
+ else:
+ mode = 'git'
+ bad_mail = 'unknown'
+ bad_name = 'Unknown'
+
+ if alias[4:] == url:
+ is_tmp = True
+ alias = util.sha1(alias).hexdigest()
+ else:
+ is_tmp = False
gitdir = os.environ['GIT_DIR']
dirname = os.path.join(gitdir, 'hg', alias)
branches = {}
bmarks = {}
+ blob_marks = {}
+ parsed_refs = {}
repo = get_repo(url, alias)
prefix = 'refs/hg/%s' % alias
die('unhandled command: %s' % line)
sys.stdout.flush()
- marks.store()
+ if not is_tmp:
+ marks.store()
+ else:
+ shutil.rmtree(dirname)
sys.exit(main(sys.argv))