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# Copyright (C) 2013 to 2014 Tim Marston <tim@edm.am>
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# This file is part of stdhome (hereafter referred to as "this program").
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# See http://ed.am/dev/stdhome for more information.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from walker import Walker
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import stdhome.the as the
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class ConflictWalker( Walker ):
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"""The conflict walker traverses the repo looking for "deployment conflicts"
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(i.e., changes in the type of file). This is run prior to running the
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copy-out walker and, as such, is given a list of files that were copied-in
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and which is can, therefore, safely ignore. It can also be given a list of
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files affected by the update (it will walk all repo files otherwise).
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Walker destination: home dir
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Walker traversing: repo
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def __init__( self, ignore_files, walk_files = None ):
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self.src_dir = the.repo.full_dir
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self.dst_dir = the.full_home_dir
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self.walk_list = walk_files if walk_files is not None else \
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self.generate_walk_list()
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self.ignore_files = ignore_files
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self.obstructed = list()
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def process( self, rel_file, src, dst ):
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# if entity is missing in home dir, it's ok to copy out (and there's no
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if dst.type == '_': return False
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# if entity was copied-in, it's ok to copy out
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elif rel_file in self.ignore_files:
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# we recurse only if this is a directory in the home dir, because if
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# it isn't copying-out will replace whatever's in the home dir with
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# the whole directory from the repo
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return dst.type == 'd'
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# entity has changed type?
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elif src.get_type_name() != dst.get_type_name():
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self.changed.append( "%s (%s => %s)" % (
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rel_file, src.get_type_name(), dst.get_type_name() ) )
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# if an entity has changed to/from a directory, we don't care about
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# anything that directory does/did contain
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# entity is a file (that wasn't copyied-in)?
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# only a problem if its content is different
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if not filecmp.cmp( src.file, dst.file ):
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self.obstructed.append( rel_file )
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# entity is a symlink (that wasn't copied-in)?
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# only a problem if the symlink is different
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if os.readlink( src.file ) != os.readlink( dst.file ):
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self.obstructed.append( rel_file )
added
removed
lib/stdhome/walker/conflict.py
