X-Git-Url: https://git.distorted.org.uk/~mdw/stgit/blobdiff_plain/d92a3fd72956ed39ace26699aaf0d6d1ab84e5ed..0f92637c75d03080d43a9b8a95527660d61d67a5:/stgit/git.py

diff --git a/stgit/git.py b/stgit/git.py
index f6d6b43..86630ce 100644
--- a/stgit/git.py
+++ b/stgit/git.py
@@ -298,14 +298,18 @@ def set_head_file(ref):
              [os.path.join('refs', 'heads', ref)]) != 0:
         raise GitException, 'Could not set head to "%s"' % ref
 
+def set_branch(branch, val):
+    """Point branch at a new commit object."""
+    if __run('git-update-ref', [branch, val]) != 0:
+        raise GitException, 'Could not update %s to "%s".' % (branch, val)
+
 def __set_head(val):
     """Sets the HEAD value
     """
     global __head
 
     if not __head or __head != val:
-        if __run('git-update-ref HEAD', [val]) != 0:
-            raise GitException, 'Could not update HEAD to "%s".' % val
+        set_branch('HEAD', val)
         __head = val
 
     # only allow SHA1 hashes
@@ -672,13 +676,15 @@ def merge(base, head1, head2, recursive = False):
     """
     refresh_index()
 
+    err_output = None
     if recursive:
         # this operation tracks renames but it is slower (used in
         # general when pushing or picking patches)
         try:
             # use _output() to mask the verbose prints of the tool
             _output('git-merge-recursive %s -- %s %s' % (base, head1, head2))
-        except GitException:
+        except GitException, ex:
+            err_output = str(ex)
             pass
     else:
         # the fast case where we don't track renames (used when the
@@ -706,6 +712,11 @@ def merge(base, head1, head2, recursive = False):
 
         files[path][stage] = (mode, hash)
 
+    if err_output and not files:
+        # if no unmerged files, there was probably a different type of
+        # error and we have to abort the merge
+        raise GitException, err_output
+
     # merge the unmerged files
     errors = False
     for path in files:
@@ -760,20 +771,28 @@ def status(files = None, modified = False, new = False, deleted = False,
         else:
             print '%s' % fs[1]
 
-def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None):
+def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None,
+         binary = False):
     """Show the diff between rev1 and rev2
     """
     if not files:
         files = []
 
+    args = []
+    if binary:
+        args.append('--binary')
+
     if rev1 and rev2:
-        diff_str = _output(['git-diff-tree', '-p', rev1, rev2, '--'] + files)
+        diff_str = _output(['git-diff-tree', '-p'] + args
+                           + [rev1, rev2, '--'] + files)
     elif rev1 or rev2:
         refresh_index()
         if rev2:
-            diff_str = _output(['git-diff-index', '-p', '-R', rev2, '--'] + files)
+            diff_str = _output(['git-diff-index', '-p', '-R']
+                               + args + [rev2, '--'] + files)
         else:
-            diff_str = _output(['git-diff-index', '-p', rev1, '--'] + files)
+            diff_str = _output(['git-diff-index', '-p']
+                               + args + [rev1, '--'] + files)
     else:
         diff_str = ''