Merge branch 'nd/gc-lock-against-each-other'
[gitweb.git] / contrib / remote-helpers / git-remote-bzr
index 10300c63d1a71aecd0f8d2273d276f36773e6b1e..054161ae21b0c884d314c984992a6c7aa8276a96 100755 (executable)
 # or
 # % git clone bzr::lp:myrepo
 #
-# If you want to specify which branches you want track (per repo):
-# git config remote-bzr.branches 'trunk, devel, test'
+# If you want to specify which branches you want to track (per repo):
+# % git config remote.origin.bzr-branches 'trunk, devel, test'
+#
+# Where 'origin' is the name of the repository you want to specify the
+# branches.
 #
 
 import sys
@@ -116,7 +119,10 @@ class Marks:
         self.last_mark = mark
 
     def get_tip(self, branch):
-        return self.tips.get(branch, None)
+        try:
+            return str(self.tips[branch])
+        except KeyError:
+            return None
 
     def set_tip(self, branch, tip):
         self.tips[branch] = tip
@@ -165,17 +171,16 @@ class Parser:
         if not m:
             return None
         _, name, email, date, tz = m.groups()
+        name = name.decode('utf-8')
         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):
@@ -230,8 +235,6 @@ def get_filechanges(cur, prev):
     return modified, removed
 
 def export_files(tree, files):
-    global marks, filenodes
-
     final = []
     for path, fid in files.iteritems():
         kind = tree.kind(fid)
@@ -273,12 +276,10 @@ def export_files(tree, files):
     return final
 
 def export_branch(repo, name):
-    global prefix
-
     ref = '%s/heads/%s' % (prefix, name)
     tip = marks.get_tip(name)
 
-    branch = bzrlib.branch.Branch.open(branches[name])
+    branch = get_remote_branch(name)
     repo = branch.repository
 
     branch.lock_read()
@@ -375,16 +376,12 @@ def export_branch(repo, name):
     marks.set_tip(name, revid)
 
 def export_tag(repo, name):
-    global tags, prefix
-
     ref = '%s/tags/%s' % (prefix, name)
     print "reset %s" % ref
     print "from :%u" % rev_to_mark(tags[name])
     print
 
 def do_import(parser):
-    global dirname
-
     repo = parser.repo
     path = os.path.join(dirname, 'marks-git')
 
@@ -410,8 +407,6 @@ def do_import(parser):
     sys.stdout.flush()
 
 def parse_blob(parser):
-    global blob_marks
-
     parser.next()
     mark = parser.get_mark()
     parser.next()
@@ -422,8 +417,6 @@ def parse_blob(parser):
 class CustomTree():
 
     def __init__(self, branch, revid, parents, files):
-        global files_cache
-
         self.updates = {}
         self.branch = branch
 
@@ -481,7 +474,7 @@ class CustomTree():
             add_entry(fid, dirname, 'directory')
             return fid
 
-        def add_entry(fid, path, kind, mode = None):
+        def add_entry(fid, path, kind, mode=None):
             dirname, basename = os.path.split(path)
             parent_fid = get_parent(dirname, basename)
 
@@ -502,7 +495,7 @@ class CustomTree():
             self.files[path] = [change[0], None]
             changes.append(change)
 
-        def update_entry(fid, path, kind, mode = None):
+        def update_entry(fid, path, kind, mode=None):
             dirname, basename = os.path.split(path)
             parent_fid = get_parent(dirname, basename)
 
@@ -580,9 +573,6 @@ def c_style_unescape(string):
     return string
 
 def parse_commit(parser):
-    global marks, blob_marks, parsed_refs
-    global mode
-
     parents = []
 
     ref = parser[1]
@@ -590,7 +580,7 @@ def parse_commit(parser):
 
     if ref.startswith('refs/heads/'):
         name = ref[len('refs/heads/'):]
-        branch = bzrlib.branch.Branch.open(branches[name])
+        branch = get_remote_branch(name)
     else:
         die('unknown ref')
 
@@ -621,7 +611,7 @@ def parse_commit(parser):
             mark = int(mark_ref[1:])
             f = { 'mode' : m, 'mark' : mark }
         elif parser.check('D'):
-            t, path = line.split(' ')
+            t, path = line.split(' ', 1)
             f = { 'deleted' : True }
         else:
             die('Unknown file command: %s' % line)
@@ -654,8 +644,6 @@ def parse_commit(parser):
     marks.new_mark(revid, commit_mark)
 
 def parse_reset(parser):
-    global parsed_refs
-
     ref = parser[1]
     parser.next()
 
@@ -671,8 +659,6 @@ def parse_reset(parser):
     parsed_refs[ref] = mark_to_rev(from_mark)
 
 def do_export(parser):
-    global parsed_refs, dirname
-
     parser.next()
 
     for line in parser.each_block('done'):
@@ -692,11 +678,12 @@ def do_export(parser):
     for ref, revid in parsed_refs.iteritems():
         if ref.startswith('refs/heads/'):
             name = ref[len('refs/heads/'):]
-            branch = bzrlib.branch.Branch.open(branches[name])
+            branch = get_remote_branch(name)
             branch.generate_revision_history(revid, marks.get_tip(name))
 
             if name in peers:
-                peer = bzrlib.branch.Branch.open(peers[name])
+                peer = bzrlib.branch.Branch.open(peers[name],
+                                                 possible_transports=transports)
                 try:
                     peer.bzrdir.push_branch(branch, revision_id=revid)
                 except bzrlib.errors.DivergedBranches:
@@ -721,8 +708,6 @@ def do_export(parser):
     print
 
 def do_capabilities(parser):
-    global dirname
-
     print "import"
     print "export"
     print "refspec refs/heads/*:%s/heads/*" % prefix
@@ -740,8 +725,6 @@ def ref_is_valid(name):
     return not True in [c in name for c in '~^: \\']
 
 def do_list(parser):
-    global tags
-
     master_branch = None
 
     for name in branches:
@@ -749,7 +732,7 @@ def do_list(parser):
             master_branch = name
         print "? refs/heads/%s" % name
 
-    branch = bzrlib.branch.Branch.open(branches[master_branch])
+    branch = get_remote_branch(master_branch)
     branch.lock_read()
     for tag, revid in branch.tags.get_tag_dict().items():
         try:
@@ -765,30 +748,40 @@ def do_list(parser):
     print "@refs/heads/%s HEAD" % master_branch
     print
 
-def get_remote_branch(origin, remote_branch, name):
-    global dirname, peers
+def clone(path, remote_branch):
+    try:
+        bdir = bzrlib.bzrdir.BzrDir.create(path, possible_transports=transports)
+    except bzrlib.errors.AlreadyControlDirError:
+        bdir = bzrlib.bzrdir.BzrDir.open(path, possible_transports=transports)
+    repo = bdir.find_repository()
+    repo.fetch(remote_branch.repository)
+    return remote_branch.sprout(bdir, repository=repo)
+
+def get_remote_branch(name):
+    remote_branch = bzrlib.branch.Branch.open(branches[name],
+                                              possible_transports=transports)
+    if isinstance(remote_branch.user_transport, bzrlib.transport.local.LocalTransport):
+        return remote_branch
 
     branch_path = os.path.join(dirname, 'clone', name)
-    if os.path.exists(branch_path):
+
+    try:
+        branch = bzrlib.branch.Branch.open(branch_path,
+                                           possible_transports=transports)
+    except bzrlib.errors.NotBranchError:
+        # clone
+        branch = clone(branch_path, remote_branch)
+    else:
         # pull
-        d = bzrlib.bzrdir.BzrDir.open(branch_path)
-        branch = d.open_branch()
         try:
-            branch.pull(remote_branch, [], None, False)
+            branch.pull(remote_branch, overwrite=True)
         except bzrlib.errors.DivergedBranches:
             # use remote branch for now
             return remote_branch
-    else:
-        # clone
-        d = origin.sprout(branch_path, None,
-                hardlink=True, create_tree_if_local=False,
-                force_new_repo=False,
-                source_branch=remote_branch)
-        branch = d.open_branch()
 
     return branch
 
-def find_branches(repo, wanted):
+def find_branches(repo):
     transport = repo.bzrdir.root_transport
 
     for fn in transport.iter_files_recursive():
@@ -799,29 +792,26 @@ def find_branches(repo, wanted):
         name = name if name != '' else 'master'
         name = name.replace('/', '+')
 
-        if wanted and not name in wanted:
-            continue
-
         try:
             cur = transport.clone(subdir)
             branch = bzrlib.branch.Branch.open_from_transport(cur)
         except bzrlib.errors.NotBranchError:
             continue
         else:
-            yield name, branch
+            yield name, branch.base
 
 def get_repo(url, alias):
-    global dirname, peer, branches
-
     normal_url = bzrlib.urlutils.normalize_url(url)
-    origin = bzrlib.bzrdir.BzrDir.open(url)
+    origin = bzrlib.bzrdir.BzrDir.open(url, possible_transports=transports)
     is_local = isinstance(origin.transport, bzrlib.transport.local.LocalTransport)
 
     shared_path = os.path.join(gitdir, 'bzr')
     try:
-        shared_dir = bzrlib.bzrdir.BzrDir.open(shared_path)
+        shared_dir = bzrlib.bzrdir.BzrDir.open(shared_path,
+                                               possible_transports=transports)
     except bzrlib.errors.NotBranchError:
-        shared_dir = bzrlib.bzrdir.BzrDir.create(shared_path)
+        shared_dir = bzrlib.bzrdir.BzrDir.create(shared_path,
+                                                 possible_transports=transports)
     try:
         shared_repo = shared_dir.open_repository()
     except bzrlib.errors.NoRepositoryPresent:
@@ -834,51 +824,47 @@ def get_repo(url, alias):
         else:
             # check and remove old organization
             try:
-                bdir = bzrlib.bzrdir.BzrDir.open(clone_path)
+                bdir = bzrlib.bzrdir.BzrDir.open(clone_path,
+                                                 possible_transports=transports)
                 bdir.destroy_repository()
             except bzrlib.errors.NotBranchError:
                 pass
             except bzrlib.errors.NoRepositoryPresent:
                 pass
 
-    try:
-        repo = origin.open_repository()
-        if not repo.user_transport.listable():
-            # this repository is not usable for us
-            raise bzrlib.errors.NoRepositoryPresent(repo.bzrdir)
-    except bzrlib.errors.NoRepositoryPresent:
-        # branch
-
-        name = 'master'
-        remote_branch = origin.open_branch()
-
-        if not is_local:
-            peers[name] = remote_branch.base
-            branch = get_remote_branch(origin, remote_branch, name)
-        else:
-            branch = remote_branch
-
-        branches[name] = branch.base
-
-        return branch.repository
-    else:
-        # repository
-
+    wanted = get_config('remote.%s.bzr-branches' % alias).rstrip().split(', ')
+    # stupid python
+    wanted = [e for e in wanted if e]
+    if not wanted:
         wanted = get_config('remote-bzr.branches').rstrip().split(', ')
         # stupid python
         wanted = [e for e in wanted if e]
 
-        for name, remote_branch in find_branches(repo, wanted):
-
-            if not is_local:
-                peers[name] = remote_branch.base
-                branch = get_remote_branch(origin, remote_branch, name)
-            else:
-                branch = remote_branch
+    if not wanted:
+        try:
+            repo = origin.open_repository()
+            if not repo.user_transport.listable():
+                # this repository is not usable for us
+                raise bzrlib.errors.NoRepositoryPresent(repo.bzrdir)
+        except bzrlib.errors.NoRepositoryPresent:
+            wanted = ['master']
+
+    if wanted:
+        def list_wanted(url, wanted):
+            for name in wanted:
+                subdir = name if name != 'master' else ''
+                yield name, bzrlib.urlutils.join(url, subdir)
+
+        branch_list = list_wanted(url, wanted)
+    else:
+        branch_list = find_branches(repo)
 
-            branches[name] = branch.base
+    for name, url in branch_list:
+        if not is_local:
+            peers[name] = url
+        branches[name] = url
 
-        return repo
+    return origin
 
 def fix_path(alias, orig_url):
     url = urlparse.urlparse(orig_url, 'file')
@@ -896,6 +882,7 @@ def main(args):
     global files_cache
     global is_tmp
     global branches, peers
+    global transports
 
     alias = args[1]
     url = args[2]
@@ -908,6 +895,7 @@ def main(args):
     marks = None
     branches = {}
     peers = {}
+    transports = []
 
     if alias[5:] == url:
         is_tmp = True