def swap_dir(rootpath, path):
"""Swap a symlink with its target directory.
Args:
rootpath: Rootpath for tag conversions.
path: Path of target symlink.
"""
target = path
if posixpath.islink(target) and posixpath.isdir(target):
here = target
there = pathlib.readlink(target)
# here is the symlink
# there is the dir
here_tag = tagnames.path2tag(rootpath, here)
there_tag = tagnames.path2tag(rootpath, there)
dtags.remove_tag(here, here_tag)
dtags.add_tag(here, there_tag)
os.unlink(here)
# here is now nothing
# there is now the dir
os.rename(there, here)
# here is now the dir
# there is now nothing
os.symlink(here, there)
else:
raise ValueError('{} is not a symlink to a directory'.format(target))
def unload_dtags(rootpath, dirpath):
"""Remove symlinks using a directory's dtags."""
tags = dtags.list_tags(dirpath)
dirpath = pathlib.readlink(dirpath)
for tagname in tags:
tagpath = tagnames.tag2path(rootpath, tagname)
if posixpath.samefile(dirpath, tagpath):
os.unlink(tagpath)
def load_dtags(rootpath, dirpath):
"""Create symlinks for a directory using its dtags."""
tags = dtags.list_tags(dirpath)
dirpath = pathlib.readlink(dirpath)
target = posixpath.abspath(dirpath)
for tagname in tags:
dstpath = tagnames.tag2path(rootpath, tagname)
os.symlink(target, dstpath)
def link(rootpath, src, dst):
"""Link src to dst.
Args:
rootpath: Path for tagname conversions.
src: Source path.
dst: Destination path.
"""
if posixpath.isdir(src):
src = pathlib.readlink(src)
os.symlink(posixpath.abspath(src), dst)
dtags.add_tag(src, tagnames.path2tag(rootpath, dst))
else:
os.link(src, dst)
def save_dtags(rootpath, top, dirpath):
"""Save symlinks to a directory's dtags, overwriting it.
Args:
rootpath: Path for tag conversions.
top: Path of directory in which to search.
dirpath: Path of directory whose dtags to update.
"""
dirpath = pathlib.readlink(dirpath)
tags = [tagnames.path2tag(rootpath, path)
for path in list_links(top, dirpath)]
dir_tagname = tagnames.path2tag(rootpath, dirpath)
tags = [tagname
for tagname in tags
if tagname != dir_tagname]
dtags.set_tags(dirpath, tags)
def unlink_all(rootpath, top, path):
"""Unlink all links to the target file-or-directory.
Unlink all links to the target under top.
Args:
rootpath: Base path for tag conversions and search.
top: Path of search directory.
path: Path to target.
"""
target = path
if posixpath.isdir(target):
target = pathlib.readlink(target)
base.unload_dtags(rootpath, target)
shutil.rmtree(target)
else:
for path in base.list_links(top, target):
base.unlink(rootpath, path)
def unlink_all(rootpath, top, path):
"""Unlink all links to the target file-or-directory.
Unlink all links to the target under top.
Args:
rootpath: Base path for tag conversions and search.
top: Path of search directory.
path: Path to target.
"""
target = path
if posixpath.isdir(target):
target = pathlib.readlink(target)
base.unload_dtags(rootpath, target)
shutil.rmtree(target)
else:
for path in base.list_links(top, target):
base.unlink(rootpath, path)