def get_file_from_fuse_path(repository, fuse_path):
"""Get file in the repository for path.
Path is a fuse-path pointing to the file.
"""
basename = path.basename(fuse_path)
name_hash = hashutils.hash_string(basename)[:2]
name_location = path.join(repository, '.names', name_hash)
names = os.listdir(name_location)
real_name = None
for name in names:
if name[40:] == basename:
real_name = name
break
if real_name is not None:
# TODO: We need to abstract query parsing here
# 0th is empty because we start with /
tag = fuse_path.split("/")[1]
return path.join(repository, tag, real_name[:2], real_name)
else:
raise IOError("File not found")
def tag_file(repository, file_path, tag):
"""Tag a file.
Args:
repository: Path to the repository.
Should be the full path pointing to the repository.
file_path: File path.
Should be the full path pointing to the file we want to tag.
tag: Tag.
"""
file_hash = hashutils.hash_file_sha1(file_path)
# first, create the tag/hash_prefix/ directory
level1_prefix = file_hash[:2]
location = path.join(repository, tag, level1_prefix)
if not path.exists(location):
os.makedirs(location)
# link the file there, but first prefix its name with the hash of
# the file it points to.
basename = path.basename(file_path)
hashed_name = file_hash + basename
# TODO: add check to see if file with this hash is already present
# and ask user if they want to replace it (or rename).
os.link(file_path, path.join(location, hashed_name))
# add the file to the names database
name_hash = hashutils.hash_string(basename)[:2]
name_location = path.join(repository, '.names', name_hash)
if not path.exists(name_location):
os.makedirs(name_location)
try:
os.link(file_path, path.join(name_location, hashed_name))
except os.FileExistsError:
pass
