def _apply_overlay(src, dst, olist):
tmp = TempFile("fsdelta-olist-")
for fpath in olist:
print >> tmp, fpath.lstrip('/')
tmp.close()
apply_overlay(src, dst, tmp.path)
def _get_dirindex(path_dirindex_conf, path_rootfs):
paths = dirindex.read_paths(file(path_dirindex_conf))
paths = [re.sub(r'^(-?)', '\\1' + path_rootfs, path) for path in paths]
tmp = TempFile()
dirindex.create(tmp.path, paths)
filtered = [
re.sub(r'^' + path_rootfs, '', line)
for line in file(tmp.path).readlines()
]
return "".join(filtered)
