def gc_exceptions(keep_paths:List[Path])->Tuple[List[DRef],List[RRef]]:
""" Scans `keep_paths` list for references to Pylightnix storage. Ignores
unrelated filesystem objects. """
keep_drefs:List[DRef]=[]
keep_rrefs:List[RRef]=[]
def _check(f:str):
nonlocal keep_drefs, keep_rrefs
if islink(a):
rref=path2rref(a)
if rref is not None:
keep_rrefs.append(rref)
else:
dref=path2dref(a)
if dref is not None:
keep_drefs.append(dref)
for path in keep_paths:
if islink(path):
_check(path)
elif isdir(path):
for root, dirs, filenames in walk(path, topdown=True):
for dirname in sorted(dirs):
a=Path(abspath(join(root, dirname)))
_check(a)
else:
pass
return keep_drefs,keep_rrefs
def dirsize(o: Path) -> int:
""" Return size in bytes """
total_size = 0
for dirpath, dirnames, filenames in walk(o):
for f in filenames:
fp = join(dirpath, f)
if not islink(fp):
total_size += getsize(fp)
return total_size
def _iter() -> Iterable[Tuple[str, bytes]]:
for root, dirs, filenames in walk(abspath(path), topdown=True):
for filename in sorted(filenames):
if len(filename) > 0 and filename[0] != '_':
localpath = abspath(join(root, filename))
if islink(localpath):
yield (f'link:{localpath}',
encode(readlink(localpath)))
with open(localpath, 'rb') as f:
yield (localpath, f.read())
def dirrw(o: Path) -> None:
for root, dirs, files in walk(o):
for d in dirs:
mode = stat(join(root, d))[ST_MODE]
chmod(join(root, d), mode | (S_IWRITE))
for f in files:
if isfile(f):
filerw(Path(join(root, f)))
if islink(f):
warning(
f"Pylightnix doesn't guarantee the consistency of symlink '{f}'"
)
chmod(o, stat(o)[ST_MODE] | (S_IWRITE | S_IWGRP | S_IWOTH))