def get_num_tree(prefix_bytes):
"""Return a dictionary of the blob contents specified by |prefix_bytes|.
This is in the form of {<full ref>: <gen num> ...}
>>> get_num_tree('\x83\xb4')
{'\x83\xb4\xe3\xe4W\xf9J*\x8f/c\x16\xecD\xd1\x04\x8b\xa9qz': 169, ...}
"""
ret = {}
ref = '%s:%s' % (REF, pathlify(prefix_bytes))
p = subprocess.Popen(['git', 'cat-file', 'blob', ref],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.stderr.close()
raw = buffer(p.stdout.read())
for i in xrange(len(raw) / CHUNK_SIZE):
ref, num = struct.unpack_from(CHUNK_FMT, raw, i * CHUNK_SIZE)
ret[ref] = num
return ret
def leaf_map_fn(prefix_tree): pre, tree = prefix_tree return UPDATE_IDX_FMT % (intern_num_tree(tree), pathlify(pre))