57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
import os, dotbot
|
|
|
|
class Clean(dotbot.Plugin):
|
|
'''
|
|
Cleans broken symbolic links.
|
|
'''
|
|
|
|
_directive = 'clean'
|
|
|
|
def can_handle(self, directive):
|
|
return directive == self._directive
|
|
|
|
def handle(self, directive, data):
|
|
if directive != self._directive:
|
|
raise ValueError('Clean cannot handle directive %s' % directive)
|
|
return self._process_clean(data)
|
|
|
|
def _process_clean(self, targets):
|
|
success = True
|
|
defaults = self._context.defaults().get(self._directive, {})
|
|
force = defaults.get('force', False)
|
|
for target in targets:
|
|
if isinstance(targets, dict):
|
|
force = targets[target].get('force', force)
|
|
success &= self._clean(target, force)
|
|
if success:
|
|
self._log.info('All targets have been cleaned')
|
|
else:
|
|
self._log.error('Some targets were not successfully cleaned')
|
|
return success
|
|
|
|
def _clean(self, target, force):
|
|
'''
|
|
Cleans all the broken symbolic links in target if they point to
|
|
a subdirectory of the base directory or if forced to clean.
|
|
'''
|
|
if not os.path.isdir(os.path.expanduser(target)):
|
|
self._log.debug('Ignoring nonexistent directory %s' % target)
|
|
return True
|
|
for item in os.listdir(os.path.expanduser(target)):
|
|
path = os.path.join(os.path.expanduser(target), item)
|
|
if not os.path.exists(path) and os.path.islink(path):
|
|
points_at = os.path.join(os.path.dirname(path), os.readlink(path))
|
|
if self._in_directory(path, self._context.base_directory()) or force:
|
|
self._log.lowinfo('Removing invalid link %s -> %s' % (path, points_at))
|
|
os.remove(path)
|
|
else:
|
|
self._log.lowinfo('Link %s -> %s not removed.' % (path, points_at))
|
|
return True
|
|
|
|
def _in_directory(self, path, directory):
|
|
'''
|
|
Returns true if the path is in the directory.
|
|
'''
|
|
directory = os.path.join(os.path.realpath(directory), '')
|
|
path = os.path.realpath(path)
|
|
return os.path.commonprefix([path, directory]) == directory
|