Make sure switch_branch uses the right __head

[stgit] / stgit / git.py

diff --git a/stgit/git.py b/stgit/git.py
index cc3b55becccb4502e47c1b3a49e66080476a17b9..33702cbc27ef0529526a06962e7277e01fb20299 100644 (file)
--- a/stgit/git.py
+++ b/stgit/git.py
@@ -18,7 +18,7 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 """
 
-import sys, os, glob, popen2
+import sys, os, popen2
 
 from stgit.utils import *
 
@@ -236,6 +236,9 @@ def get_head_file():
 def set_head_file(ref):
     """Resets HEAD to point to a new ref
     """
+    # head cache flushing is needed since we might have a different value
+    # in the new head
+    __clear_head_cache()
     if __run('git-symbolic-ref HEAD', [ref]) != 0:
         raise GitException, 'Could not set head to "%s"' % ref
 
@@ -285,7 +288,7 @@ def create_branch(new_branch, tree_id = None):
 
     # a checkout isn't needed if new branch points to the current head
     if tree_id:
-        git.switch(tree_id)
+        switch(tree_id)
 
     if os.path.isfile(os.path.join(base_dir, 'MERGE_HEAD')):
         os.remove(os.path.join(base_dir, 'MERGE_HEAD'))
@@ -293,6 +296,8 @@ def create_branch(new_branch, tree_id = None):
 def switch_branch(name):
     """Switch to a git branch
     """
+    global __head
+
     new_head = os.path.join('refs', 'heads', name)
     if not branch_exists(new_head):
         raise GitException, 'Branch "%s" does not exist' % name
@@ -307,6 +312,28 @@ def switch_branch(name):
     if os.path.isfile(os.path.join(base_dir, 'MERGE_HEAD')):
         os.remove(os.path.join(base_dir, 'MERGE_HEAD'))
 
+def delete_branch(name):
+    """Delete a git branch
+    """
+    branch_head = os.path.join('refs', 'heads', name)
+    if not branch_exists(branch_head):
+        raise GitException, 'Branch "%s" does not exist' % name
+    os.remove(os.path.join(base_dir, branch_head))
+
+def rename_branch(from_name, to_name):
+    """Rename a git branch
+    """
+    from_head = os.path.join('refs', 'heads', from_name)
+    if not branch_exists(from_head):
+        raise GitException, 'Branch "%s" does not exist' % from_name
+    to_head = os.path.join('refs', 'heads', to_name)
+    if branch_exists(to_head):
+        raise GitException, 'Branch "%s" already exists' % to_name
+
+    if get_head_file() == from_name:
+        set_head_file(to_head)
+    os.rename(os.path.join(base_dir, from_head), os.path.join(base_dir, to_head))
+
 def add(names):
     """Add the files or recursively add the directory contents
     """