/usr/share/pyshared/hgext/git/git_handler.py is in mercurial-git 0.4.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import stat, posixpath, StringIO
from dulwich.errors import HangupException, GitProtocolError, UpdateRefsError
from dulwich.index import commit_tree
from dulwich.objects import Blob, Commit, Tag, Tree, parse_timezone, S_IFGITLINK
from dulwich.pack import create_delta, apply_delta
from dulwich.repo import Repo
from dulwich import client
from dulwich import config as dul_config
try:
from mercurial import bookmarks
bookmarks.update
from mercurial import commands
except ImportError:
from hgext import bookmarks
try:
from mercurial.error import RepoError
except ImportError:
from mercurial.repo import RepoError
from mercurial.i18n import _
from mercurial.node import hex, bin, nullid
from mercurial import context, util as hgutil
from mercurial import error
import _ssh
import util
from overlay import overlayrepo
RE_GIT_AUTHOR = re.compile('^(.*?) ?\<(.*?)(?:\>(.*))?$')
RE_GIT_SANITIZE_AUTHOR = re.compile('[<>\n]')
RE_GIT_AUTHOR_EXTRA = re.compile('^(.*?)\ ext:\((.*)\) <(.*)\>$')
# Test for git:// and git+ssh:// URI.
# Support several URL forms, including separating the
# host and path with either a / or : (sepr)
RE_GIT_URI = re.compile(
r'^(?P<scheme>git([+]ssh)?://)(?P<host>.*?)(:(?P<port>\d+))?'
r'(?P<sepr>[:/])(?P<path>.*)$')
RE_NEWLINES = re.compile('[\r\n]')
RE_GIT_PROGRESS = re.compile('\((\d+)/(\d+)\)')
RE_AUTHOR_FILE = re.compile('\s*=\s*')
class GitProgress(object):
"""convert git server progress strings into mercurial progress"""
def __init__(self, ui):
self.ui = ui
self.lasttopic = None
self.msgbuf = ''
def progress(self, msg):
# 'Counting objects: 33640, done.\n'
# 'Compressing objects: 0% (1/9955) \r
msgs = RE_NEWLINES.split(self.msgbuf + msg)
self.msgbuf = msgs.pop()
for msg in msgs:
td = msg.split(':', 1)
data = td.pop()
if not td:
self.flush(data)
continue
topic = td[0]
m = RE_GIT_PROGRESS.search(data)
if m:
if self.lasttopic and self.lasttopic != topic:
self.flush()
self.lasttopic = topic
pos, total = map(int, m.group(1, 2))
util.progress(self.ui, topic, pos, total=total)
else:
self.flush(msg)
def flush(self, msg=None):
if self.lasttopic:
util.progress(self.ui, self.lasttopic, None)
self.lasttopic = None
if msg:
self.ui.note(msg + '\n')
class GitHandler(object):
mapfile = 'git-mapfile'
tagsfile = 'git-tags'
def __init__(self, dest_repo, ui):
self.repo = dest_repo
self.ui = ui
if ui.configbool('git', 'intree'):
self.gitdir = self.repo.wjoin('.git')
else:
self.gitdir = self.repo.join('git')
self.init_author_file()
self.paths = ui.configitems('paths')
self.branch_bookmark_suffix = ui.config('git', 'branch_bookmark_suffix')
self._map_git_real = {}
self._map_hg_real = {}
self.load_tags()
@property
def _map_git(self):
if not self._map_git_real:
self.load_map()
return self._map_git_real
@property
def _map_hg(self):
if not self._map_hg_real:
self.load_map()
return self._map_hg_real
# make the git data directory
def init_if_missing(self):
if os.path.exists(self.gitdir):
self.git = Repo(self.gitdir)
else:
os.mkdir(self.gitdir)
self.git = Repo.init_bare(self.gitdir)
def init_author_file(self):
self.author_map = {}
if self.ui.config('git', 'authors'):
f = open(self.repo.wjoin(
self.ui.config('git', 'authors')))
try:
for line in f:
line = line.strip()
if not line or line.startswith('#'):
continue
from_, to = RE_AUTHOR_FILE.split(line, 2)
self.author_map[from_] = to
finally:
f.close()
## FILE LOAD AND SAVE METHODS
def map_set(self, gitsha, hgsha):
self._map_git[gitsha] = hgsha
self._map_hg[hgsha] = gitsha
def map_hg_get(self, gitsha):
return self._map_git.get(gitsha)
def map_git_get(self, hgsha):
return self._map_hg.get(hgsha)
def load_map(self):
if os.path.exists(self.repo.join(self.mapfile)):
for line in self.repo.opener(self.mapfile):
gitsha, hgsha = line.strip().split(' ', 1)
self._map_git_real[gitsha] = hgsha
self._map_hg_real[hgsha] = gitsha
def save_map(self):
file = self.repo.opener(self.mapfile, 'w+', atomictemp=True)
for hgsha, gitsha in sorted(self._map_hg.iteritems()):
file.write("%s %s\n" % (gitsha, hgsha))
# If this complains that NoneType is not callable, then
# atomictempfile no longer has either of rename (pre-1.9) or
# close (post-1.9)
getattr(file, 'rename', getattr(file, 'close', None))()
def load_tags(self):
self.tags = {}
if os.path.exists(self.repo.join(self.tagsfile)):
for line in self.repo.opener(self.tagsfile):
sha, name = line.strip().split(' ', 1)
self.tags[name] = sha
def save_tags(self):
file = self.repo.opener(self.tagsfile, 'w+', atomictemp=True)
for name, sha in sorted(self.tags.iteritems()):
if not self.repo.tagtype(name) == 'global':
file.write("%s %s\n" % (sha, name))
# If this complains that NoneType is not callable, then
# atomictempfile no longer has either of rename (pre-1.9) or
# close (post-1.9)
getattr(file, 'rename', getattr(file, 'close', None))()
## END FILE LOAD AND SAVE METHODS
## COMMANDS METHODS
def import_commits(self, remote_name):
self.import_git_objects(remote_name)
self.update_hg_bookmarks(self.git.get_refs())
self.save_map()
def fetch(self, remote, heads):
self.export_commits()
refs = self.fetch_pack(remote, heads)
remote_name = self.remote_name(remote)
oldrefs = self.git.get_refs()
if refs:
self.import_git_objects(remote_name, refs)
self.import_tags(refs)
self.update_hg_bookmarks(refs)
if remote_name:
self.update_remote_branches(remote_name, refs)
elif not self.paths:
# intial cloning
self.update_remote_branches('default', refs)
# "Activate" a tipmost bookmark.
bms = getattr(self.repo['tip'], 'bookmarks',
lambda : None)()
if bms:
bookmarks.setcurrent(self.repo, bms[0])
def remoteref(ref):
rn = remote_name or 'default'
return 'refs/remotes/' + rn + ref[10:]
modheads = [refs[k] for k in refs if k.startswith('refs/heads/')
and not k.endswith('^{}')
and refs[k] != oldrefs.get(remoteref(k))]
if not modheads:
self.ui.status(_("no changes found\n"))
self.save_map()
return len(modheads)
def export_commits(self):
try:
self.export_git_objects()
self.export_hg_tags()
self.update_references()
finally:
self.save_map()
def get_refs(self, remote):
self.export_commits()
client, path = self.get_transport_and_path(remote)
old_refs = {}
new_refs = {}
def changed(refs):
old_refs.update(refs)
to_push = set(self.local_heads().values() + self.tags.values())
new_refs.update(self.get_changed_refs(refs, to_push, True))
return refs # always return the same refs to make the send a no-op
try:
client.send_pack(path, changed, lambda have, want: [])
changed_refs = [ref for ref, sha in new_refs.iteritems()
if sha != old_refs.get(ref)]
new = [bin(self.map_hg_get(new_refs[ref])) for ref in changed_refs]
old = {}
for r in old_refs:
old_ref = self.map_hg_get(old_refs[r])
if old_ref:
old[bin(old_ref)] = 1
return old, new
except (HangupException, GitProtocolError), e:
raise hgutil.Abort(_("git remote error: ") + str(e))
def push(self, remote, revs, force):
self.export_commits()
old_refs, new_refs = self.upload_pack(remote, revs, force)
remote_name = self.remote_name(remote)
if remote_name and new_refs:
for ref, new_sha in new_refs.iteritems():
old_sha = old_refs.get(ref)
if old_sha is None:
if self.ui.verbose:
self.ui.note("adding reference %s::%s => GIT:%s\n" %
(remote_name, ref, new_sha[0:8]))
else:
self.ui.status("adding reference %s\n" % ref)
elif new_sha != old_sha:
if self.ui.verbose:
self.ui.note("updating reference %s::%s => GIT:%s\n" %
(remote_name, ref, new_sha[0:8]))
else:
self.ui.status("updating reference %s\n" % ref)
else:
self.ui.debug("unchanged reference %s::%s => GIT:%s\n" %
(remote_name, ref, new_sha[0:8]))
self.update_remote_branches(remote_name, new_refs)
if old_refs == new_refs:
self.ui.status(_("no changes found\n"))
ret = None
elif len(new_refs) > len(old_refs):
ret = 1 + (len(new_refs) - len(old_refs))
elif len(old_refs) > len(new_refs):
ret = -1 - (len(new_refs) - len(old_refs))
else:
ret = 1
return ret
def clear(self):
mapfile = self.repo.join(self.mapfile)
if os.path.exists(self.gitdir):
for root, dirs, files in os.walk(self.gitdir, topdown=False):
for name in files:
os.remove(os.path.join(root, name))
for name in dirs:
os.rmdir(os.path.join(root, name))
os.rmdir(self.gitdir)
if os.path.exists(mapfile):
os.remove(mapfile)
# incoming support
def getremotechanges(self, remote, revs):
self.export_commits()
refs = self.fetch_pack(remote.path, revs)
# refs contains all remote refs. Prune to only those requested.
if revs:
reqrefs = {}
for rev in revs:
for n in ('refs/heads/' + rev, 'refs/tags/' + rev):
if n in refs:
reqrefs[n] = refs[n]
else:
reqrefs = refs
commits = [bin(c) for c in self.getnewgitcommits(reqrefs)[1]]
b = overlayrepo(self, commits, refs)
return (b, commits, lambda: None)
## CHANGESET CONVERSION METHODS
def export_git_objects(self):
self.init_if_missing()
nodes = [self.repo.lookup(n) for n in self.repo]
export = [node for node in nodes if not hex(node) in self._map_hg]
total = len(export)
if total:
self.ui.note(_("exporting hg objects to git\n"))
for i, rev in enumerate(export):
util.progress(self.ui, 'exporting', i, total=total)
ctx = self.repo.changectx(rev)
state = ctx.extra().get('hg-git', None)
if state == 'octopus':
self.ui.debug("revision %d is a part "
"of octopus explosion\n" % ctx.rev())
continue
self.export_hg_commit(rev)
util.progress(self.ui, 'importing', None, total=total)
# convert this commit into git objects
# go through the manifest, convert all blobs/trees we don't have
# write the commit object (with metadata info)
def export_hg_commit(self, rev):
self.ui.note(_("converting revision %s\n") % hex(rev))
oldenc = self.swap_out_encoding()
ctx = self.repo.changectx(rev)
extra = ctx.extra()
commit = Commit()
(time, timezone) = ctx.date()
# work around to bad timezone offets - dulwich does not handle
# sub minute based timezones. In the one known case, it was a
# manual edit that led to the unusual value. Based on that,
# there is no reason to round one way or the other, so do the
# simplest and round down.
timezone -= (timezone % 60)
commit.author = self.get_git_author(ctx)
commit.author_time = int(time)
commit.author_timezone = -timezone
if 'committer' in extra:
# fixup timezone
(name, timestamp, timezone) = extra['committer'].rsplit(' ', 2)
commit.committer = name
commit.commit_time = timestamp
# work around a timezone format change
if int(timezone) % 60 != 0: #pragma: no cover
timezone = parse_timezone(timezone)
# Newer versions of Dulwich return a tuple here
if isinstance(timezone, tuple):
timezone, neg_utc = timezone
commit._commit_timezone_neg_utc = neg_utc
else:
timezone = -int(timezone)
commit.commit_timezone = timezone
else:
commit.committer = commit.author
commit.commit_time = commit.author_time
commit.commit_timezone = commit.author_timezone
commit.parents = []
for parent in self.get_git_parents(ctx):
hgsha = hex(parent.node())
git_sha = self.map_git_get(hgsha)
if git_sha:
if git_sha not in self.git.object_store:
raise hgutil.Abort(_('Parent SHA-1 not present in Git'
'repo: %s' % git_sha))
commit.parents.append(git_sha)
commit.message = self.get_git_message(ctx)
if 'encoding' in extra:
commit.encoding = extra['encoding']
tree_sha = commit_tree(self.git.object_store, self.iterblobs(ctx))
if tree_sha not in self.git.object_store:
raise hgutil.Abort(_('Tree SHA-1 not present in Git repo: %s' %
tree_sha))
commit.tree = tree_sha
self.git.object_store.add_object(commit)
self.map_set(commit.id, ctx.hex())
self.swap_out_encoding(oldenc)
return commit.id
def get_valid_git_username_email(self, name):
r"""Sanitize usernames and emails to fit git's restrictions.
The following is taken from the man page of git's fast-import
command:
[...] Likewise LF means one (and only one) linefeed [...]
committer
The committer command indicates who made this commit,
and when they made it.
Here <name> is the person's display name (for example
"Com M Itter") and <email> is the person's email address
("cm@example.com[1]"). LT and GT are the literal
less-than (\x3c) and greater-than (\x3e) symbols. These
are required to delimit the email address from the other
fields in the line. Note that <name> and <email> are
free-form and may contain any sequence of bytes, except
LT, GT and LF. <name> is typically UTF-8 encoded.
Accordingly, this function makes sure that there are none of the
characters <, >, or \n in any string which will be used for
a git username or email. Before this, it first removes left
angle brackets and spaces from the beginning, and right angle
brackets and spaces from the end, of this string, to convert
such things as " <john@doe.com> " to "john@doe.com" for
convenience.
TESTS:
>>> from mercurial.ui import ui
>>> g = GitHandler('', ui()).get_valid_git_username_email
>>> g('John Doe')
'John Doe'
>>> g('john@doe.com')
'john@doe.com'
>>> g(' <john@doe.com> ')
'john@doe.com'
>>> g(' <random<\n<garbage\n> > > ')
'random???garbage?'
>>> g('Typo in hgrc >but.hg-git@handles.it.gracefully>')
'Typo in hgrc ?but.hg-git@handles.it.gracefully'
"""
return RE_GIT_SANITIZE_AUTHOR.sub('?', name.lstrip('< ').rstrip('> '))
def get_git_author(self, ctx):
# hg authors might not have emails
author = ctx.user()
# see if a translation exists
author = self.author_map.get(author, author)
# check for git author pattern compliance
a = RE_GIT_AUTHOR.match(author)
if a:
name = self.get_valid_git_username_email(a.group(1))
email = self.get_valid_git_username_email(a.group(2))
if a.group(3) != None and len(a.group(3)) != 0:
name += ' ext:(' + urllib.quote(a.group(3)) + ')'
author = self.get_valid_git_username_email(name) + ' <' + self.get_valid_git_username_email(email) + '>'
elif '@' in author:
author = self.get_valid_git_username_email(author) + ' <' + self.get_valid_git_username_email(author) + '>'
else:
author = self.get_valid_git_username_email(author) + ' <none@none>'
if 'author' in ctx.extra():
author = "".join(apply_delta(author, ctx.extra()['author']))
return author
def get_git_parents(self, ctx):
def is_octopus_part(ctx):
return ctx.extra().get('hg-git', None) in ('octopus', 'octopus-done')
parents = []
if ctx.extra().get('hg-git', None) == 'octopus-done':
# implode octopus parents
part = ctx
while is_octopus_part(part):
(p1, p2) = part.parents()
assert not is_octopus_part(p1)
parents.append(p1)
part = p2
parents.append(p2)
else:
parents = ctx.parents()
return parents
def get_git_message(self, ctx):
extra = ctx.extra()
message = ctx.description() + "\n"
if 'message' in extra:
message = "".join(apply_delta(message, extra['message']))
# HG EXTRA INFORMATION
add_extras = False
extra_message = ''
if not ctx.branch() == 'default':
add_extras = True
extra_message += "branch : " + ctx.branch() + "\n"
renames = []
for f in ctx.files():
if f not in ctx.manifest():
continue
rename = ctx.filectx(f).renamed()
if rename:
renames.append((rename[0], f))
if renames:
add_extras = True
for oldfile, newfile in renames:
extra_message += "rename : " + oldfile + " => " + newfile + "\n"
for key, value in extra.iteritems():
if key in ('author', 'committer', 'encoding', 'message', 'branch', 'hg-git'):
continue
else:
add_extras = True
extra_message += "extra : " + key + " : " + urllib.quote(value) + "\n"
if add_extras:
message += "\n--HG--\n" + extra_message
return message
def iterblobs(self, ctx):
if '.hgsubstate' in ctx:
hgsub = util.OrderedDict()
if '.hgsub' in ctx:
hgsub = util.parse_hgsub(ctx['.hgsub'].data().splitlines())
hgsubstate = util.parse_hgsubstate(ctx['.hgsubstate'].data().splitlines())
for path, sha in hgsubstate.iteritems():
try:
if path in hgsub and not hgsub[path].startswith('[git]'):
# some other kind of a repository (e.g. [hg])
# that keeps its state in .hgsubstate, shall ignore
continue
yield path, sha, S_IFGITLINK
except ValueError:
pass
for f in ctx:
if f == '.hgsubstate' or f == '.hgsub':
continue
fctx = ctx[f]
blobid = self.map_git_get(hex(fctx.filenode()))
if not blobid:
blob = Blob.from_string(fctx.data())
self.git.object_store.add_object(blob)
self.map_set(blob.id, hex(fctx.filenode()))
blobid = blob.id
if 'l' in ctx.flags(f):
mode = 0120000
elif 'x' in ctx.flags(f):
mode = 0100755
else:
mode = 0100644
yield f, blobid, mode
def getnewgitcommits(self, refs=None):
self.init_if_missing()
# import heads and fetched tags as remote references
todo = []
done = set()
convert_list = {}
# get a list of all the head shas
seenheads = set()
if refs is None:
refs = self.git.refs.as_dict()
if refs:
for sha in refs.itervalues():
# refs contains all the refs in the server, not just the ones
# we are pulling
if sha in self.git.object_store:
obj = self.git.get_object(sha)
while isinstance(obj, Tag):
obj_type, sha = obj.object
obj = self.git.get_object(sha)
if isinstance (obj, Commit) and sha not in seenheads:
seenheads.add(sha)
todo.append(sha)
# sort by commit date
def commitdate(sha):
obj = self.git.get_object(sha)
return obj.commit_time-obj.commit_timezone
todo.sort(key=commitdate, reverse=True)
# traverse the heads getting a list of all the unique commits
commits = []
seen = set(todo)
while todo:
sha = todo[-1]
if sha in done:
todo.pop()
continue
assert isinstance(sha, str)
obj = self.git.get_object(sha)
assert isinstance(obj, Commit)
for p in obj.parents:
if p not in done:
todo.append(p)
break
else:
commits.append(sha)
convert_list[sha] = obj
done.add(sha)
todo.pop()
return convert_list, [commit for commit in commits if not commit in self._map_git]
def import_git_objects(self, remote_name=None, refs=None):
convert_list, commits = self.getnewgitcommits(refs)
# import each of the commits, oldest first
total = len(commits)
if total:
self.ui.status(_("importing git objects into hg\n"))
for i, csha in enumerate(commits):
util.progress(self.ui, 'importing', i, total=total, unit='commits')
commit = convert_list[csha]
self.import_git_commit(commit)
util.progress(self.ui, 'importing', None, total=total, unit='commits')
# Remove any dangling tag references.
for name, rev in self.repo.tags().items():
if not rev in self.repo:
if hasattr(self, 'tagscache') and self.tagscache and \
'name' in self.tagscache:
# Mercurial 1.4 and earlier.
del self.repo.tagscache[name]
elif hasattr(self, '_tags') and self._tags and \
'name' in self._tags:
# Mercurial 1.5 and later.
del self.repo._tags[name]
if (hgutil.safehasattr(self.repo, '_tagtypes') and
self.repo._tagtypes and
name in self.repo._tagtypes):
# Mercurial 1.9 and earlier.
del self.repo._tagtypes[name]
elif (hgutil.safehasattr(self.repo, 'tagscache') and
self.repo.tagscache and
hgutil.safehasattr(self.repo.tagscache, '_tagtypes') and
self.repo.tagscache._tagtypes and
name in self.repo.tagscache._tagtypes):
# Mercurial 2.0 and later.
del self.repo.tagscache._tagtypes[name]
def import_git_commit(self, commit):
self.ui.debug(_("importing: %s\n") % commit.id)
(strip_message, hg_renames,
hg_branch, extra) = self.extract_hg_metadata(commit.message)
# get a list of the changed, added, removed files
files = self.get_files_changed(commit)
# Handle gitlinks: collect
gitlinks = self.collect_gitlinks(commit.tree)
git_commit_tree = self.git[commit.tree]
# Analyze hgsubstate and build an updated version
# using SHAs from gitlinks
hgsubstate = None
if gitlinks:
hgsubstate = util.parse_hgsubstate(self.git_file_readlines(git_commit_tree, '.hgsubstate'))
for path, sha in gitlinks:
hgsubstate[path] = sha
# in case .hgsubstate wasn't among changed files
# force its inclusion
files['.hgsubstate'] = (False, 0100644, None)
# Analyze .hgsub and merge with .gitmodules
hgsub = None
gitmodules = self.parse_gitmodules(git_commit_tree)
if gitmodules or gitlinks:
hgsub = util.parse_hgsub(self.git_file_readlines(git_commit_tree, '.hgsub'))
for (sm_path, sm_url, sm_name) in gitmodules:
hgsub[sm_path] = '[git]' + sm_url
files['.hgsub'] = (False, 0100644, None)
elif commit.parents and '.gitmodules' in self.git[self.git[commit.parents[0]].tree]:
# no .gitmodules in this commit, however present in the parent
# mark its hg counterpart as deleted (assuming .hgsub is there
# due to the same import_git_commit process
files['.hgsub'] = (True, 0100644, None)
date = (commit.author_time, -commit.author_timezone)
text = strip_message
origtext = text
try:
text.decode('utf-8')
except UnicodeDecodeError:
text = self.decode_guess(text, commit.encoding)
text = '\n'.join([l.rstrip() for l in text.splitlines()]).strip('\n')
if text + '\n' != origtext:
extra['message'] = create_delta(text +'\n', origtext)
author = commit.author
# convert extra data back to the end
if ' ext:' in commit.author:
m = RE_GIT_AUTHOR_EXTRA.match(commit.author)
if m:
name = m.group(1)
ex = urllib.unquote(m.group(2))
email = m.group(3)
author = name + ' <' + email + '>' + ex
if ' <none@none>' in commit.author:
author = commit.author[:-12]
try:
author.decode('utf-8')
except UnicodeDecodeError:
origauthor = author
author = self.decode_guess(author, commit.encoding)
extra['author'] = create_delta(author, origauthor)
oldenc = self.swap_out_encoding()
def findconvergedfiles(p1, p2):
# If any files have the same contents in both parents of a merge
# (and are therefore not reported as changed by Git) but are at
# different file revisions in Mercurial (because they arrived at
# those contents in different ways), we need to include them in
# the list of changed files so that Mercurial can join up their
# filelog histories (same as if the merge was done in Mercurial to
# begin with).
if p2 == nullid:
return []
manifest1 = self.repo.changectx(p1).manifest()
manifest2 = self.repo.changectx(p2).manifest()
return [path for path, node1 in manifest1.iteritems()
if path not in files and manifest2.get(path, node1) != node1]
def getfilectx(repo, memctx, f):
info = files.get(f)
if info != None:
# it's a file reported as modified from Git
delete, mode, sha = info
if delete:
raise IOError
if not sha: # indicates there's no git counterpart
e = ''
copied_path = None
if '.hgsubstate' == f:
data = util.serialize_hgsubstate(hgsubstate)
elif '.hgsub' == f:
data = util.serialize_hgsub(hgsub)
else:
data = self.git[sha].data
copied_path = hg_renames.get(f)
e = self.convert_git_int_mode(mode)
else:
# it's a converged file
fc = context.filectx(self.repo, f, changeid=memctx.p1().rev())
data = fc.data()
e = fc.flags()
copied_path = fc.renamed()
return context.memfilectx(f, data, 'l' in e, 'x' in e, copied_path)
gparents = map(self.map_hg_get, commit.parents)
p1, p2 = (nullid, nullid)
octopus = False
if len(gparents) > 1:
# merge, possibly octopus
def commit_octopus(p1, p2):
ctx = context.memctx(self.repo, (p1, p2), text,
list(files) + findconvergedfiles(p1, p2),
getfilectx, author, date, {'hg-git': 'octopus'})
return hex(self.repo.commitctx(ctx))
octopus = len(gparents) > 2
p2 = gparents.pop()
p1 = gparents.pop()
while len(gparents) > 0:
p2 = commit_octopus(p1, p2)
p1 = gparents.pop()
else:
if gparents:
p1 = gparents.pop()
pa = None
if not (p2 == nullid):
node1 = self.repo.changectx(p1)
node2 = self.repo.changectx(p2)
pa = node1.ancestor(node2)
# if named branch, add to extra
if hg_branch:
extra['branch'] = hg_branch
# if committer is different than author, add it to extra
if commit.author != commit.committer \
or commit.author_time != commit.commit_time \
or commit.author_timezone != commit.commit_timezone:
extra['committer'] = "%s %d %d" % (
commit.committer, commit.commit_time, -commit.commit_timezone)
if commit.encoding:
extra['encoding'] = commit.encoding
if hg_branch:
extra['branch'] = hg_branch
if octopus:
extra['hg-git'] ='octopus-done'
# TODO use 'n in self.repo' when we require hg 1.5
def repo_contains(n):
try:
return bool(self.repo.lookup(n))
except error.RepoLookupError:
return False
if not (repo_contains(p1) and repo_contains(p2)):
raise hgutil.Abort(_('you appear to have run strip - '
'please run hg git-cleanup'))
ctx = context.memctx(self.repo, (p1, p2), text,
list(files) + findconvergedfiles(p1, p2),
getfilectx, author, date, extra)
node = self.repo.commitctx(ctx)
self.swap_out_encoding(oldenc)
# save changeset to mapping file
cs = hex(node)
self.map_set(commit.id, cs)
## PACK UPLOADING AND FETCHING
def upload_pack(self, remote, revs, force):
client, path = self.get_transport_and_path(remote)
old_refs = {}
change_totals = {}
def changed(refs):
self.ui.status(_("searching for changes\n"))
old_refs.update(refs)
to_push = revs or set(self.local_heads().values() + self.tags.values())
return self.get_changed_refs(refs, to_push, force)
def genpack(have, want):
commits = []
for mo in self.git.object_store.find_missing_objects(have, want):
(sha, name) = mo
o = self.git.object_store[sha]
t = type(o)
change_totals[t] = change_totals.get(t, 0) + 1
if isinstance(o, Commit):
commits.append(sha)
commit_count = len(commits)
self.ui.note(_("%d commits found\n") % commit_count)
if commit_count > 0:
self.ui.debug(_("list of commits:\n"))
for commit in commits:
self.ui.debug("%s\n" % commit)
self.ui.status(_("adding objects\n"))
return self.git.object_store.generate_pack_contents(have, want)
try:
new_refs = client.send_pack(path, changed, genpack)
if len(change_totals) > 0:
self.ui.status(_("added %d commits with %d trees"
" and %d blobs\n") %
(change_totals.get(Commit, 0),
change_totals.get(Tree, 0),
change_totals.get(Blob, 0)))
return old_refs, new_refs
except (HangupException, GitProtocolError), e:
raise hgutil.Abort(_("git remote error: ") + str(e))
def get_changed_refs(self, refs, revs, force):
new_refs = refs.copy()
#The remote repo is empty and the local one doesn't have bookmarks/tags
if refs.keys()[0] == 'capabilities^{}':
if not self.local_heads():
tip = self.repo.lookup('tip')
if tip != nullid:
del new_refs['capabilities^{}']
tip = hex(tip)
try:
commands.bookmark(self.ui, self.repo, 'master', tip, force=True)
except NameError:
bookmarks.bookmark(self.ui, self.repo, 'master', tip, force=True)
bookmarks.setcurrent(self.repo, 'master')
new_refs['refs/heads/master'] = self.map_git_get(tip)
for rev in revs:
ctx = self.repo[rev]
if getattr(ctx, 'bookmarks', None):
labels = lambda c: ctx.tags() + [
fltr for fltr, bm
in self._filter_for_bookmarks(ctx.bookmarks())
]
else:
labels = lambda c: ctx.tags()
prep = lambda itr: [i.replace(' ', '_') for i in itr]
heads = [t for t in prep(labels(ctx)) if t in self.local_heads()]
tags = [t for t in prep(labels(ctx)) if t in self.tags]
if not (heads or tags):
raise hgutil.Abort("revision %s cannot be pushed since"
" it doesn't have a ref" % ctx)
# Check if the tags the server is advertising are annotated tags,
# by attempting to retrieve it from the our git repo, and building a
# list of these tags.
#
# This is possible, even though (currently) annotated tags are
# dereferenced and stored as lightweight ones, as the annotated tag
# is still stored in the git repo.
uptodate_annotated_tags = []
for r in tags:
ref = 'refs/tags/'+r
# Check tag.
if not ref in refs:
continue
try:
# We're not using Repo.tag(), as it's deprecated.
tag = self.git.get_object(refs[ref])
if not isinstance(tag, Tag):
continue
except KeyError:
continue
# If we've reached here, the tag's good.
uptodate_annotated_tags.append(ref)
for r in heads + tags:
if r in heads:
ref = 'refs/heads/'+r
else:
ref = 'refs/tags/'+r
if ref not in refs:
new_refs[ref] = self.map_git_get(ctx.hex())
elif new_refs[ref] in self._map_git:
rctx = self.repo[self.map_hg_get(new_refs[ref])]
if rctx.ancestor(ctx) == rctx or force:
new_refs[ref] = self.map_git_get(ctx.hex())
else:
raise hgutil.Abort("pushing %s overwrites %s"
% (ref, ctx))
elif ref in uptodate_annotated_tags:
# we already have the annotated tag.
pass
else:
raise hgutil.Abort("%s changed on the server, please pull "
"and merge before pushing" % ref)
return new_refs
def fetch_pack(self, remote_name, heads=None):
client, path = self.get_transport_and_path(remote_name)
graphwalker = self.git.get_graph_walker()
def determine_wants(refs):
if heads:
want = []
# contains pairs of ('refs/(heads|tags|...)/foo', 'foo')
# if ref is just '<foo>', then we get ('foo', 'foo')
stripped_refs = [
(r, r[r.find('/', r.find('/')+1)+1:])
for r in refs]
for h in heads:
r = [pair[0] for pair in stripped_refs if pair[1] == h]
if not r:
raise hgutil.Abort("ref %s not found on remote server" % h)
elif len(r) == 1:
want.append(refs[r[0]])
else:
raise hgutil.Abort("ambiguous reference %s: %r" % (h, r))
else:
want = [sha for ref, sha in refs.iteritems()
if not ref.endswith('^{}')
and ( ref.startswith('refs/heads/') or ref.startswith('refs/tags/') ) ]
want = [x for x in want if x not in self.git]
return want
try:
progress = GitProgress(self.ui)
f = StringIO.StringIO()
ret = client.fetch_pack(path, determine_wants, graphwalker, f.write, progress.progress)
if(f.pos != 0):
f.seek(0)
po = self.git.object_store.add_thin_pack(f.read, None)
progress.flush()
return ret
except (HangupException, GitProtocolError), e:
raise hgutil.Abort(_("git remote error: ") + str(e))
## REFERENCES HANDLING
def update_references(self):
heads = self.local_heads()
# Create a local Git branch name for each
# Mercurial bookmark.
for key in heads:
git_ref = self.map_git_get(heads[key])
if git_ref:
self.git.refs['refs/heads/' + key] = self.map_git_get(heads[key])
def export_hg_tags(self):
for tag, sha in self.repo.tags().iteritems():
if self.repo.tagtype(tag) in ('global', 'git'):
tag = tag.replace(' ', '_')
target = self.map_git_get(hex(sha))
if target is not None:
self.git.refs['refs/tags/' + tag] = target
self.tags[tag] = hex(sha)
else:
self.repo.ui.warn(
'Skipping export of tag %s because it '
'has no matching git revision.' % tag)
def _filter_for_bookmarks(self, bms):
if not self.branch_bookmark_suffix:
return [(bm, bm) for bm in bms]
else:
def _filter_bm(bm):
if bm.endswith(self.branch_bookmark_suffix):
return bm[0:-(len(self.branch_bookmark_suffix))]
else:
return bm
return [(_filter_bm(bm), bm) for bm in bms]
def local_heads(self):
try:
if getattr(bookmarks, 'parse', None):
bms = bookmarks.parse(self.repo)
else:
bms = self.repo._bookmarks
return dict([(filtered_bm, hex(bms[bm])) for
filtered_bm, bm in self._filter_for_bookmarks(bms)])
except AttributeError: #pragma: no cover
return {}
def import_tags(self, refs):
keys = refs.keys()
if not keys:
return
for k in keys[:]:
ref_name = k
parts = k.split('/')
if parts[0] == 'refs' and parts[1] == 'tags':
ref_name = "/".join([v for v in parts[2:]])
# refs contains all the refs in the server, not just
# the ones we are pulling
if refs[k] not in self.git.object_store:
continue
if ref_name[-3:] == '^{}':
ref_name = ref_name[:-3]
if not ref_name in self.repo.tags():
obj = self.git.get_object(refs[k])
sha = None
if isinstance (obj, Commit): # lightweight
sha = self.map_hg_get(refs[k])
self.tags[ref_name] = sha
elif isinstance (obj, Tag): # annotated
(obj_type, obj_sha) = obj.object
obj = self.git.get_object(obj_sha)
if isinstance (obj, Commit):
sha = self.map_hg_get(obj_sha)
# TODO: better handling for annotated tags
self.tags[ref_name] = sha
self.save_tags()
def update_hg_bookmarks(self, refs):
try:
oldbm = getattr(bookmarks, 'parse', None)
if oldbm:
bms = bookmarks.parse(self.repo)
else:
bms = self.repo._bookmarks
heads = dict([(ref[11:],refs[ref]) for ref in refs
if ref.startswith('refs/heads/')])
for head, sha in heads.iteritems():
# refs contains all the refs in the server, not just
# the ones we are pulling
if sha not in self.git.object_store:
continue
hgsha = bin(self.map_hg_get(sha))
if not head in bms:
# new branch
bms[head] = hgsha
else:
bm = self.repo[bms[head]]
if bm.ancestor(self.repo[hgsha]) == bm:
# fast forward
bms[head] = hgsha
# if there's a branch bookmark suffix,
# then add it on to all bookmark names
# that would otherwise conflict with a branch
# name
if self.branch_bookmark_suffix:
real_branch_names = self.repo.branchmap()
bms = dict(
(
bm_name + self.branch_bookmark_suffix
if bm_name in real_branch_names
else bm_name,
bms[bm_name]
)
for bm_name in bms
)
if heads:
if oldbm:
bookmarks.write(self.repo, bms)
else:
self.repo._bookmarks = bms
if getattr(bms, 'write', None): # hg >= 2.5
bms.write()
else: # hg < 2.5
bookmarks.write(self.repo)
except AttributeError:
self.ui.warn(_('creating bookmarks failed, do you have'
' bookmarks enabled?\n'))
def update_remote_branches(self, remote_name, refs):
tagfile = self.repo.join(os.path.join('git-remote-refs'))
tags = self.repo.gitrefs()
# since we re-write all refs for this remote each time, prune
# all entries matching this remote from our tags list now so
# that we avoid any stale refs hanging around forever
for t in list(tags):
if t.startswith(remote_name + '/'):
del tags[t]
tags = dict((k, hex(v)) for k, v in tags.iteritems())
store = self.git.object_store
for ref_name, sha in refs.iteritems():
if ref_name.startswith('refs/heads'):
if sha not in store:
continue
hgsha = self.map_hg_get(sha)
head = ref_name[11:]
tags['/'.join((remote_name, head))] = hgsha
# TODO(durin42): what is this doing?
new_ref = 'refs/remotes/%s/%s' % (remote_name, head)
self.git.refs[new_ref] = sha
elif (ref_name.startswith('refs/tags')
and not ref_name.endswith('^{}')):
self.git.refs[ref_name] = sha
tf = open(tagfile, 'wb')
for tag, node in tags.iteritems():
tf.write('%s %s\n' % (node, tag))
tf.close()
## UTILITY FUNCTIONS
def convert_git_int_mode(self, mode):
# TODO: make these into constants
convert = {
0100644: '',
0100755: 'x',
0120000: 'l'}
if mode in convert:
return convert[mode]
return ''
def extract_hg_metadata(self, message):
split = message.split("\n--HG--\n", 1)
renames = {}
extra = {}
branch = False
if len(split) == 2:
message, meta = split
lines = meta.split("\n")
for line in lines:
if line == '':
continue
if ' : ' not in line:
break
command, data = line.split(" : ", 1)
if command == 'rename':
before, after = data.split(" => ", 1)
renames[after] = before
if command == 'branch':
branch = data
if command == 'extra':
before, after = data.split(" : ", 1)
extra[before] = urllib.unquote(after)
return (message, renames, branch, extra)
def get_file(self, commit, f):
otree = self.git.tree(commit.tree)
parts = f.split('/')
for part in parts:
(mode, sha) = otree[part]
obj = self.git.get_object(sha)
if isinstance (obj, Blob):
return (mode, sha, obj._text)
elif isinstance(obj, Tree):
otree = obj
def get_files_changed(self, commit):
tree = commit.tree
btree = None
if commit.parents:
btree = self.git[commit.parents[0]].tree
changes = self.git.object_store.tree_changes(btree, tree)
files = {}
for (oldfile, newfile), (oldmode, newmode), (oldsha, newsha) in changes:
# don't create new submodules
if newmode == 0160000:
if oldfile:
# become a regular delete
newfile, newmode = None, None
else:
continue
# so old submodules shoudn't exist
if oldmode == 0160000:
if newfile:
# become a regular add
oldfile, oldmode = None, None
else:
continue
if newfile is None:
file = oldfile
delete = True
else:
file = newfile
delete = False
files[file] = (delete, newmode, newsha)
return files
def collect_gitlinks(self, tree_id):
"""Walk the tree and collect all gitlink entries
:param tree_id: sha of the commit tree
:return: list of tuples (commit sha, full entry path)
"""
queue = [(tree_id, '')]
gitlinks = []
while queue:
e, path = queue.pop(0)
o = self.git.object_store[e]
for (name, mode, sha) in o.iteritems():
if mode == S_IFGITLINK:
gitlinks.append((posixpath.join(path, name), sha))
elif stat.S_ISDIR(mode):
queue.append((sha, posixpath.join(path, name)))
return gitlinks
def parse_gitmodules(self, tree_obj):
"""Parse .gitmodules from a git tree specified by tree_obj
:return: list of tuples (submodule path, url, name),
where name is quoted part of the section's name, or
empty list if nothing found
"""
rv = []
try:
unused_mode,gitmodules_sha = tree_obj['.gitmodules']
except KeyError:
return rv
gitmodules_content = self.git[gitmodules_sha].data
fo = StringIO.StringIO(gitmodules_content)
tt = dul_config.ConfigFile.from_file(fo)
for section in tt.keys():
section_kind, section_name = section
if section_kind == 'submodule':
sm_path = tt.get(section, 'path')
sm_url = tt.get(section, 'url')
rv.append((sm_path, sm_url, section_name))
return rv
def git_file_readlines(self, tree_obj, fname):
"""Read content of a named entry from the git commit tree
:return: list of lines
"""
if fname in tree_obj:
unused_mode, sha = tree_obj[fname]
content = self.git[sha].data
return content.splitlines()
return []
def remote_name(self, remote):
names = [name for name, path in self.paths if path == remote]
if names:
return names[0]
# Stolen from hgsubversion
def swap_out_encoding(self, new_encoding='UTF-8'):
try:
from mercurial import encoding
old = encoding.encoding
encoding.encoding = new_encoding
except ImportError:
old = hgutil._encoding
hgutil._encoding = new_encoding
return old
def decode_guess(self, string, encoding):
# text is not valid utf-8, try to make sense of it
if encoding:
try:
return string.decode(encoding).encode('utf-8')
except UnicodeDecodeError:
pass
try:
return string.decode('latin-1').encode('utf-8')
except UnicodeDecodeError:
return string.decode('ascii', 'replace').encode('utf-8')
def get_transport_and_path(self, uri):
# pass hg's ui.ssh config to dulwich
if not issubclass(client.get_ssh_vendor, _ssh.SSHVendor):
client.get_ssh_vendor = _ssh.generate_ssh_vendor(self.ui)
git_match = RE_GIT_URI.match(uri)
if git_match:
res = git_match.groupdict()
transport = client.SSHGitClient if 'ssh' in res['scheme'] else client.TCPGitClient
host, port, sepr, path = res['host'], res['port'], res['sepr'], res['path']
if sepr == '/':
path = '/' + path
# strip trailing slash for heroku-style URLs
# ssh+git://git@heroku.com:project.git/
if sepr == ':' and path.endswith('.git/'):
path = path.rstrip('/')
if port:
client.port = port
return transport(host, thin_packs=False, port=port), path
httpclient = getattr(client, 'HttpGitClient', None)
if uri.startswith('git+http://') or uri.startswith('git+https://'):
uri = uri[4:]
if uri.startswith('http://') or uri.startswith('https://'):
if not httpclient:
raise RepoError('git via HTTP requires dulwich 0.8.1 or later')
else:
return client.HttpGitClient(uri, thin_packs=False), uri
# if its not git or git+ssh, try a local url..
return client.SubprocessGitClient(thin_packs=False), uri
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