diff --git a/contrib/remote-helpers/git-remote-bzr b/contrib/remote-helpers/git-remote-bzr
new file mode 100755
index 00000000000..c5822e4ac97
--- /dev/null
+++ b/contrib/remote-helpers/git-remote-bzr
@@ -0,0 +1,725 @@
+#!/usr/bin/env python
+#
+# Copyright (c) 2012 Felipe Contreras
+#
+
+#
+# Just copy to your ~/bin, or anywhere in your $PATH.
+# Then you can clone with:
+# % git clone bzr::/path/to/bzr/repo/or/url
+#
+# For example:
+# % git clone bzr::$HOME/myrepo
+# or
+# % git clone bzr::lp:myrepo
+#
+
+import sys
+
+import bzrlib
+if hasattr(bzrlib, "initialize"):
+ bzrlib.initialize()
+
+import bzrlib.plugin
+bzrlib.plugin.load_plugins()
+
+import bzrlib.generate_ids
+import bzrlib.transport
+
+import sys
+import os
+import json
+import re
+import StringIO
+
+NAME_RE = re.compile('^([^<>]+)')
+AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]*)>$')
+RAW_AUTHOR_RE = re.compile('^(\w+) (.+)? <(.*)> (\d+) ([+-]\d+)')
+
+def die(msg, *args):
+ sys.stderr.write('ERROR: %s\n' % (msg % args))
+ sys.exit(1)
+
+def warn(msg, *args):
+ sys.stderr.write('WARNING: %s\n' % (msg % args))
+
+def gittz(tz):
+ return '%+03d%02d' % (tz / 3600, tz % 3600 / 60)
+
+class Marks:
+
+ def __init__(self, path):
+ self.path = path
+ self.tips = {}
+ self.marks = {}
+ self.rev_marks = {}
+ self.last_mark = 0
+ self.load()
+
+ def load(self):
+ if not os.path.exists(self.path):
+ return
+
+ tmp = json.load(open(self.path))
+ self.tips = tmp['tips']
+ self.marks = tmp['marks']
+ self.last_mark = tmp['last-mark']
+
+ for rev, mark in self.marks.iteritems():
+ self.rev_marks[mark] = rev
+
+ def dict(self):
+ return { 'tips': self.tips, 'marks': self.marks, 'last-mark' : self.last_mark }
+
+ def store(self):
+ json.dump(self.dict(), open(self.path, 'w'))
+
+ def __str__(self):
+ return str(self.dict())
+
+ def from_rev(self, rev):
+ return self.marks[rev]
+
+ def to_rev(self, mark):
+ return self.rev_marks[mark]
+
+ def next_mark(self):
+ self.last_mark += 1
+ return self.last_mark
+
+ def get_mark(self, rev):
+ self.last_mark += 1
+ self.marks[rev] = self.last_mark
+ return self.last_mark
+
+ def is_marked(self, rev):
+ return self.marks.has_key(rev)
+
+ def new_mark(self, rev, mark):
+ self.marks[rev] = mark
+ self.rev_marks[mark] = rev
+ self.last_mark = mark
+
+ def get_tip(self, branch):
+ return self.tips.get(branch, None)
+
+ def set_tip(self, branch, tip):
+ self.tips[branch] = tip
+
+class Parser:
+
+ def __init__(self, repo):
+ self.repo = repo
+ self.line = self.get_line()
+
+ def get_line(self):
+ return sys.stdin.readline().strip()
+
+ def __getitem__(self, i):
+ return self.line.split()[i]
+
+ def check(self, word):
+ return self.line.startswith(word)
+
+ def each_block(self, separator):
+ while self.line != separator:
+ yield self.line
+ self.line = self.get_line()
+
+ def __iter__(self):
+ return self.each_block('')
+
+ def next(self):
+ self.line = self.get_line()
+ 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):
+ m = RAW_AUTHOR_RE.match(self.line)
+ if not m:
+ return None
+ _, name, email, date, tz = m.groups()
+ committer = '%s <%s>' % (name, email)
+ tz = int(tz)
+ tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
+ return (committer, int(date), tz)
+
+def rev_to_mark(rev):
+ global marks
+ return marks.from_rev(rev)
+
+def mark_to_rev(mark):
+ global marks
+ return marks.to_rev(mark)
+
+def fixup_user(user):
+ name = mail = None
+ user = user.replace('"', '')
+ m = AUTHOR_RE.match(user)
+ if m:
+ name = m.group(1)
+ mail = m.group(2).strip()
+ else:
+ m = NAME_RE.match(user)
+ if m:
+ name = m.group(1).strip()
+
+ return '%s <%s>' % (name, mail)
+
+def get_filechanges(cur, prev):
+ modified = {}
+ removed = {}
+
+ changes = cur.changes_from(prev)
+
+ for path, fid, kind in changes.added:
+ modified[path] = fid
+ for path, fid, kind in changes.removed:
+ removed[path] = None
+ for path, fid, kind, mod, _ in changes.modified:
+ modified[path] = fid
+ for oldpath, newpath, fid, kind, mod, _ in changes.renamed:
+ removed[oldpath] = None
+ modified[newpath] = fid
+
+ return modified, removed
+
+def export_files(tree, files):
+ global marks, filenodes
+
+ final = []
+ for path, fid in files.iteritems():
+ kind = tree.kind(fid)
+
+ h = tree.get_file_sha1(fid)
+
+ if kind == 'symlink':
+ d = tree.get_symlink_target(fid)
+ mode = '120000'
+ elif kind == 'file':
+
+ if tree.is_executable(fid):
+ mode = '100755'
+ else:
+ mode = '100644'
+
+ # is the blog already exported?
+ if h in filenodes:
+ mark = filenodes[h]
+ final.append((mode, mark, path))
+ continue
+
+ d = tree.get_file_text(fid)
+ elif kind == 'directory':
+ continue
+ else:
+ die("Unhandled kind '%s' for path '%s'" % (kind, path))
+
+ mark = marks.next_mark()
+ filenodes[h] = mark
+
+ print "blob"
+ print "mark :%u" % mark
+ print "data %d" % len(d)
+ print d
+
+ final.append((mode, mark, path))
+
+ return final
+
+def export_branch(branch, name):
+ global prefix, dirname
+
+ ref = '%s/heads/%s' % (prefix, name)
+ tip = marks.get_tip(name)
+
+ repo = branch.repository
+ repo.lock_read()
+ revs = branch.iter_merge_sorted_revisions(None, tip, 'exclude', 'forward')
+ count = 0
+
+ revs = [revid for revid, _, _, _ in revs if not marks.is_marked(revid)]
+
+ for revid in revs:
+
+ rev = repo.get_revision(revid)
+
+ parents = rev.parent_ids
+ time = rev.timestamp
+ tz = rev.timezone
+ committer = rev.committer.encode('utf-8')
+ committer = "%s %u %s" % (fixup_user(committer), time, gittz(tz))
+ author = committer
+ msg = rev.message.encode('utf-8')
+
+ msg += '\n'
+
+ if len(parents) == 0:
+ parent = bzrlib.revision.NULL_REVISION
+ else:
+ parent = parents[0]
+
+ cur_tree = repo.revision_tree(revid)
+ prev = repo.revision_tree(parent)
+ modified, removed = get_filechanges(cur_tree, prev)
+
+ modified_final = export_files(cur_tree, modified)
+
+ if len(parents) == 0:
+ print 'reset %s' % ref
+
+ print "commit %s" % ref
+ print "mark :%d" % (marks.get_mark(revid))
+ print "author %s" % (author)
+ print "committer %s" % (committer)
+ print "data %d" % (len(msg))
+ print msg
+
+ for i, p in enumerate(parents):
+ try:
+ m = rev_to_mark(p)
+ except KeyError:
+ # ghost?
+ continue
+ if i == 0:
+ print "from :%s" % m
+ else:
+ print "merge :%s" % m
+
+ for f in modified_final:
+ print "M %s :%u %s" % f
+ for f in removed:
+ print "D %s" % (f)
+ print
+
+ count += 1
+ if (count % 100 == 0):
+ print "progress revision %s (%d/%d)" % (revid, count, len(revs))
+ print "#############################################################"
+
+ repo.unlock()
+
+ revid = branch.last_revision()
+
+ # make sure the ref is updated
+ print "reset %s" % ref
+ print "from :%u" % rev_to_mark(revid)
+ print
+
+ marks.set_tip(name, revid)
+
+def export_tag(repo, name):
+ global tags
+ try:
+ print "reset refs/tags/%s" % name
+ print "from :%u" % rev_to_mark(tags[name])
+ print
+ except KeyError:
+ warn("TODO: fetch tag '%s'" % name)
+
+def do_import(parser):
+ global dirname
+
+ branch = parser.repo
+ path = os.path.join(dirname, 'marks-git')
+
+ print "feature done"
+ if os.path.exists(path):
+ print "feature import-marks=%s" % path
+ print "feature export-marks=%s" % path
+ sys.stdout.flush()
+
+ while parser.check('import'):
+ ref = parser[1]
+ if ref.startswith('refs/heads/'):
+ name = ref[len('refs/heads/'):]
+ export_branch(branch, name)
+ if ref.startswith('refs/tags/'):
+ name = ref[len('refs/tags/'):]
+ export_tag(branch, name)
+ parser.next()
+
+ print 'done'
+
+ sys.stdout.flush()
+
+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()
+
+class CustomTree():
+
+ def __init__(self, repo, revid, parents, files):
+ global files_cache
+
+ self.repo = repo
+ self.revid = revid
+ self.parents = parents
+ self.updates = {}
+
+ def copy_tree(revid):
+ files = files_cache[revid] = {}
+ tree = repo.repository.revision_tree(revid)
+ repo.lock_read()
+ try:
+ for path, entry in tree.iter_entries_by_dir():
+ files[path] = entry.file_id
+ finally:
+ repo.unlock()
+ return files
+
+ if len(parents) == 0:
+ self.base_id = bzrlib.revision.NULL_REVISION
+ self.base_files = {}
+ else:
+ self.base_id = parents[0]
+ self.base_files = files_cache.get(self.base_id, None)
+ if not self.base_files:
+ self.base_files = copy_tree(self.base_id)
+
+ self.files = files_cache[revid] = self.base_files.copy()
+
+ for path, f in files.iteritems():
+ fid = self.files.get(path, None)
+ if not fid:
+ fid = bzrlib.generate_ids.gen_file_id(path)
+ f['path'] = path
+ self.updates[fid] = f
+
+ def last_revision(self):
+ return self.base_id
+
+ def iter_changes(self):
+ changes = []
+
+ def get_parent(dirname, basename):
+ parent_fid = self.base_files.get(dirname, None)
+ if parent_fid:
+ return parent_fid
+ parent_fid = self.files.get(dirname, None)
+ if parent_fid:
+ return parent_fid
+ if basename == '':
+ return None
+ fid = bzrlib.generate_ids.gen_file_id(path)
+ d = add_entry(fid, dirname, 'directory')
+ return fid
+
+ def add_entry(fid, path, kind, mode = None):
+ dirname, basename = os.path.split(path)
+ parent_fid = get_parent(dirname, basename)
+
+ executable = False
+ if mode == '100755':
+ executable = True
+ elif mode == '120000':
+ kind = 'symlink'
+
+ change = (fid,
+ (None, path),
+ True,
+ (False, True),
+ (None, parent_fid),
+ (None, basename),
+ (None, kind),
+ (None, executable))
+ self.files[path] = change[0]
+ changes.append(change)
+ return change
+
+ def update_entry(fid, path, kind, mode = None):
+ dirname, basename = os.path.split(path)
+ parent_fid = get_parent(dirname, basename)
+
+ executable = False
+ if mode == '100755':
+ executable = True
+ elif mode == '120000':
+ kind = 'symlink'
+
+ change = (fid,
+ (path, path),
+ True,
+ (True, True),
+ (None, parent_fid),
+ (None, basename),
+ (None, kind),
+ (None, executable))
+ self.files[path] = change[0]
+ changes.append(change)
+ return change
+
+ def remove_entry(fid, path, kind):
+ dirname, basename = os.path.split(path)
+ parent_fid = get_parent(dirname, basename)
+ change = (fid,
+ (path, None),
+ True,
+ (True, False),
+ (parent_fid, None),
+ (None, None),
+ (None, None),
+ (None, None))
+ del self.files[path]
+ changes.append(change)
+ return change
+
+ for fid, f in self.updates.iteritems():
+ path = f['path']
+
+ if 'deleted' in f:
+ remove_entry(fid, path, 'file')
+ continue
+
+ if path in self.base_files:
+ update_entry(fid, path, 'file', f['mode'])
+ else:
+ add_entry(fid, path, 'file', f['mode'])
+
+ return changes
+
+ def get_file_with_stat(self, file_id, path=None):
+ return (StringIO.StringIO(self.updates[file_id]['data']), None)
+
+ def get_symlink_target(self, file_id):
+ return self.updates[file_id]['data']
+
+def parse_commit(parser):
+ global marks, blob_marks, bmarks, parsed_refs
+ global mode
+
+ parents = []
+
+ ref = parser[1]
+ parser.next()
+
+ if ref != 'refs/heads/master':
+ die("bzr doesn't support multiple branches; use 'master'")
+
+ 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'):
+ parents.append(parser.get_mark())
+ parser.next()
+ while parser.check('merge'):
+ parents.append(parser.get_mark())
+ parser.next()
+
+ files = {}
+
+ for line in parser:
+ if parser.check('M'):
+ t, m, mark_ref, path = line.split(' ', 3)
+ mark = int(mark_ref[1:])
+ f = { 'mode' : 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
+
+ repo = parser.repo
+
+ committer, date, tz = committer
+ parents = [str(mark_to_rev(p)) for p in parents]
+ revid = bzrlib.generate_ids.gen_revision_id(committer, date)
+ props = {}
+ props['branch-nick'] = repo.nick
+
+ mtree = CustomTree(repo, revid, parents, files)
+ changes = mtree.iter_changes()
+
+ repo.lock_write()
+ try:
+ builder = repo.get_commit_builder(parents, None, date, tz, committer, props, revid)
+ try:
+ list(builder.record_iter_changes(mtree, mtree.last_revision(), changes))
+ builder.finish_inventory()
+ builder.commit(data.decode('utf-8', 'replace'))
+ except Exception, e:
+ builder.abort()
+ raise
+ finally:
+ repo.unlock()
+
+ parsed_refs[ref] = revid
+ marks.new_mark(revid, commit_mark)
+
+def parse_reset(parser):
+ global parsed_refs
+
+ ref = parser[1]
+ parser.next()
+
+ if ref != 'refs/heads/master':
+ die("bzr doesn't support multiple branches; use 'master'")
+
+ # ugh
+ if parser.check('commit'):
+ parse_commit(parser)
+ return
+ if not parser.check('from'):
+ return
+ from_mark = parser.get_mark()
+ parser.next()
+
+ parsed_refs[ref] = mark_to_rev(from_mark)
+
+def do_export(parser):
+ global parsed_refs, dirname, 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'):
+ pass
+ elif parser.check('feature'):
+ pass
+ else:
+ die('unhandled export command: %s' % line)
+
+ repo = parser.repo
+
+ for ref, revid in parsed_refs.iteritems():
+ if ref == 'refs/heads/master':
+ repo.generate_revision_history(revid, marks.get_tip('master'))
+ revno, revid = repo.last_revision_info()
+ if peer:
+ if hasattr(peer, "import_last_revision_info_and_tags"):
+ peer.import_last_revision_info_and_tags(repo, revno, revid)
+ else:
+ peer.import_last_revision_info(repo.repository, revno, revid)
+ wt = peer.bzrdir.open_workingtree()
+ else:
+ wt = repo.bzrdir.open_workingtree()
+ wt.update()
+ print "ok %s" % ref
+ print
+
+def do_capabilities(parser):
+ global dirname
+
+ print "import"
+ print "export"
+ print "refspec refs/heads/*:%s/heads/*" % 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 do_list(parser):
+ global tags
+ print "? refs/heads/%s" % 'master'
+ for tag, revid in parser.repo.tags.get_tag_dict().items():
+ print "? refs/tags/%s" % tag
+ tags[tag] = revid
+ print "@refs/heads/%s HEAD" % 'master'
+ print
+
+def get_repo(url, alias):
+ global dirname, peer
+
+ origin = bzrlib.bzrdir.BzrDir.open(url)
+ branch = origin.open_branch()
+
+ if not isinstance(origin.transport, bzrlib.transport.local.LocalTransport):
+ clone_path = os.path.join(dirname, 'clone')
+ remote_branch = branch
+ if os.path.exists(clone_path):
+ # pull
+ d = bzrlib.bzrdir.BzrDir.open(clone_path)
+ branch = d.open_branch()
+ result = branch.pull(remote_branch, [], None, False)
+ else:
+ # clone
+ d = origin.sprout(clone_path, None,
+ hardlink=True, create_tree_if_local=False,
+ source_branch=remote_branch)
+ branch = d.open_branch()
+ branch.bind(remote_branch)
+
+ peer = remote_branch
+ else:
+ peer = None
+
+ return branch
+
+def main(args):
+ global marks, prefix, dirname
+ global tags, filenodes
+ global blob_marks
+ global parsed_refs
+ global files_cache
+
+ alias = args[1]
+ url = args[2]
+
+ prefix = 'refs/bzr/%s' % alias
+ tags = {}
+ filenodes = {}
+ blob_marks = {}
+ parsed_refs = {}
+ files_cache = {}
+
+ gitdir = os.environ['GIT_DIR']
+ dirname = os.path.join(gitdir, 'bzr', alias)
+
+ if not os.path.exists(dirname):
+ os.makedirs(dirname)
+
+ repo = get_repo(url, alias)
+
+ marks_path = os.path.join(dirname, 'marks-int')
+ marks = Marks(marks_path)
+
+ parser = Parser(repo)
+ for line in parser:
+ if parser.check('capabilities'):
+ do_capabilities(parser)
+ elif parser.check('list'):
+ do_list(parser)
+ elif parser.check('import'):
+ do_import(parser)
+ elif parser.check('export'):
+ do_export(parser)
+ else:
+ die('unhandled command: %s' % line)
+ sys.stdout.flush()
+
+ marks.store()
+
+sys.exit(main(sys.argv))
diff --git a/contrib/remote-helpers/test-bzr.sh b/contrib/remote-helpers/test-bzr.sh
new file mode 100755
index 00000000000..70aa8a010a6
--- /dev/null
+++ b/contrib/remote-helpers/test-bzr.sh
@@ -0,0 +1,143 @@
+#!/bin/sh
+#
+# Copyright (c) 2012 Felipe Contreras
+#
+
+test_description='Test remote-bzr'
+
+. ./test-lib.sh
+
+if ! test_have_prereq PYTHON; then
+ skip_all='skipping remote-bzr tests; python not available'
+ test_done
+fi
+
+if ! "$PYTHON_PATH" -c 'import bzrlib'; then
+ skip_all='skipping remote-bzr tests; bzr not available'
+ test_done
+fi
+
+cmd='
+import bzrlib
+bzrlib.initialize()
+import bzrlib.plugin
+bzrlib.plugin.load_plugins()
+import bzrlib.plugins.fastimport
+'
+
+if ! "$PYTHON_PATH" -c "$cmd"; then
+ echo "consider setting BZR_PLUGIN_PATH=$HOME/.bazaar/plugins" 1>&2
+ skip_all='skipping remote-bzr tests; bzr-fastimport not available'
+ test_done
+fi
+
+check () {
+ (cd $1 &&
+ git log --format='%s' -1 &&
+ git symbolic-ref HEAD) > actual &&
+ (echo $2 &&
+ echo "refs/heads/$3") > expected &&
+ test_cmp expected actual
+}
+
+bzr whoami "A U Thor <author@example.com>"
+
+test_expect_success 'cloning' '
+ (bzr init bzrrepo &&
+ cd bzrrepo &&
+ echo one > content &&
+ bzr add content &&
+ bzr commit -m one
+ ) &&
+
+ git clone "bzr::$PWD/bzrrepo" gitrepo &&
+ check gitrepo one master
+'
+
+test_expect_success 'pulling' '
+ (cd bzrrepo &&
+ echo two > content &&
+ bzr commit -m two
+ ) &&
+
+ (cd gitrepo && git pull) &&
+
+ check gitrepo two master
+'
+
+test_expect_success 'pushing' '
+ (cd gitrepo &&
+ echo three > content &&
+ git commit -a -m three &&
+ git push
+ ) &&
+
+ echo three > expected &&
+ cat bzrrepo/content > actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'roundtrip' '
+ (cd gitrepo &&
+ git pull &&
+ git log --format="%s" -1 origin/master > actual) &&
+ echo three > expected &&
+ test_cmp expected actual &&
+
+ (cd gitrepo && git push && git pull) &&
+
+ (cd bzrrepo &&
+ echo four > content &&
+ bzr commit -m four
+ ) &&
+
+ (cd gitrepo && git pull && git push) &&
+
+ check gitrepo four master &&
+
+ (cd gitrepo &&
+ echo five > content &&
+ git commit -a -m five &&
+ git push && git pull
+ ) &&
+
+ (cd bzrrepo && bzr revert) &&
+
+ echo five > expected &&
+ cat bzrrepo/content > actual &&
+ test_cmp expected actual
+'
+
+cat > expected <<EOF
+100644 blob 54f9d6da5c91d556e6b54340b1327573073030af content
+100755 blob 68769579c3eaadbe555379b9c3538e6628bae1eb executable
+120000 blob 6b584e8ece562ebffc15d38808cd6b98fc3d97ea link
+EOF
+
+test_expect_success 'special modes' '
+ (cd bzrrepo &&
+ echo exec > executable
+ chmod +x executable &&
+ bzr add executable
+ bzr commit -m exec &&
+ ln -s content link
+ bzr add link
+ bzr commit -m link &&
+ mkdir dir &&
+ bzr add dir &&
+ bzr commit -m dir) &&
+
+ (cd gitrepo &&
+ git pull
+ git ls-tree HEAD > ../actual) &&
+
+ test_cmp expected actual &&
+
+ (cd gitrepo &&
+ git cat-file -p HEAD:link > ../actual) &&
+
+ echo -n content > expected &&
+ test_cmp expected actual
+'
+
+test_done