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