def set_symbolic_ref(self,
name,
other,
committer=None,
timestamp=None,
timezone=None,
message=None):
"""Make a ref point at another ref.
:param name: Name of the ref to set
:param other: Name of the ref to point at
:param message: Optional message to describe the change
"""
self._check_refname(name)
self._check_refname(other)
filename = self.refpath(name)
f = GitFile(filename, "wb")
try:
f.write(SYMREF + other + b"\n")
sha = self.follow(name)[-1]
self._log(
name,
sha,
sha,
committer=committer,
timestamp=timestamp,
timezone=timezone,
message=message,
)
except BaseException:
f.abort()
raise
else:
f.close()
def write(self):
"""Write current contents of index to disk."""
f = GitFile(self._filename, "wb")
try:
f = SHA1Writer(f)
write_index_dict(f, self._byname)
finally:
f.close()
def read(self):
"""Read current contents of index from disk."""
if not os.path.exists(self._filename):
return
f = GitFile(self._filename, "rb")
try:
f = SHA1Reader(f)
for x in read_index(f):
self[x[0]] = IndexEntry(*x[1:])
# FIXME: Additional data?
f.read(os.path.getsize(self._filename) - f.tell() - 20)
f.check_sha()
finally:
f.close()
def _remove_packed_ref(self, name):
if self._packed_refs is None:
return
filename = os.path.join(self.path, b"packed-refs")
# reread cached refs from disk, while holding the lock
f = GitFile(filename, "wb")
try:
self._packed_refs = None
self.get_packed_refs()
if name not in self._packed_refs:
return
del self._packed_refs[name]
if name in self._peeled_refs:
del self._peeled_refs[name]
write_packed_refs(f, self._packed_refs, self._peeled_refs)
f.close()
finally:
f.abort()
def _complete_thin_pack(self, f, path, copier, indexer):
"""Move a specific file containing a pack into the pack directory.
:note: The file should be on the same file system as the
packs directory.
:param f: Open file object for the pack.
:param path: Path to the pack file.
:param copier: A PackStreamCopier to use for writing pack data.
:param indexer: A PackIndexer for indexing the pack.
"""
entries = list(indexer)
# Update the header with the new number of objects.
f.seek(0)
write_pack_header(f, len(entries) + len(indexer.ext_refs()))
# Must flush before reading (http://bugs.python.org/issue3207)
f.flush()
# Rescan the rest of the pack, computing the SHA with the new header.
new_sha = compute_file_sha(f, end_ofs=-20)
# Must reposition before writing (http://bugs.python.org/issue3207)
f.seek(0, os.SEEK_CUR)
# Complete the pack.
for ext_sha in indexer.ext_refs():
assert len(ext_sha) == 20
type_num, data = self.get_raw(ext_sha)
offset = f.tell()
crc32 = write_pack_object(f, type_num, data, sha=new_sha)
entries.append((ext_sha, offset, crc32))
pack_sha = new_sha.digest()
f.write(pack_sha)
f.close()
# Move the pack in.
entries.sort()
pack_base_name = self._get_pack_basepath(entries)
target_pack = pack_base_name + ".pack"
if sys.platform == "win32":
# Windows might have the target pack file lingering. Attempt
# removal, silently passing if the target does not exist.
try:
os.remove(target_pack)
except (IOError, OSError) as e:
if e.errno != errno.ENOENT:
raise
os.rename(path, target_pack)
# Write the index.
index_file = GitFile(pack_base_name + ".idx", "wb")
try:
write_pack_index_v2(index_file, entries, pack_sha)
index_file.close()
finally:
index_file.abort()
# Add the pack to the store and return it.
final_pack = Pack(pack_base_name)
final_pack.check_length_and_checksum()
self._add_known_pack(pack_base_name, final_pack)
return final_pack
