remote-bzr: add fallback check for a partial clone

diff --git a/contrib/remote-helpers/git-remote-bzr b/contrib/remote-helpers/git-remote-bzr
index 202a4f7f44ecf2fe51e1ce0cb0d073b456fafbd0..3cd65723c3ad04e0b339d17b36ece64d537f23f7 100755 (executable)
--- a/contrib/remote-helpers/git-remote-bzr
+++ b/contrib/remote-helpers/git-remote-bzr
@@ -766,7 +766,10 @@ def do_list(parser):
     print
 
 def clone(path, remote_branch):
-    bdir = bzrlib.bzrdir.BzrDir.create(path)
+    try:
+        bdir = bzrlib.bzrdir.BzrDir.create(path)
+    except bzrlib.errors.AlreadyControlDirError:
+        bdir = bzrlib.bzrdir.BzrDir.open(path)
     repo = bdir.find_repository()
     repo.fetch(remote_branch.repository)
     return remote_branch.sprout(bdir, repository=repo)
@@ -795,7 +798,7 @@ def get_remote_branch(name):
 
     return branch
 
-def find_branches(repo, wanted):
+def find_branches(repo):
     transport = repo.bzrdir.root_transport
 
     for fn in transport.iter_files_recursive():
@@ -806,16 +809,13 @@ 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
@@ -848,38 +848,35 @@ def get_repo(url, alias):
             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
-
-        branches[name] = remote_branch.base
+    wanted = get_config('remote-bzr.branches').rstrip().split(', ')
+    # stupid python
+    wanted = [e for e in wanted if e]
 
-        return remote_branch.repository
+    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:
-        # repository
-
-        wanted = get_config('remote-bzr.branches').rstrip().split(', ')
-        # stupid python
-        wanted = [e for e in wanted if e]
+        branch_list = find_branches(repo)
 
-        for name, remote_branch in find_branches(repo, wanted):
-
-            if not is_local:
-                peers[name] = remote_branch.base
-
-            branches[name] = remote_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')