bzr branch
http://bzr.ed.am/stdhome
5
by Tim Marston
moved copy-in, copy-out and deployment conflict checking to a set of "walkers"; |
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# conflict_walker.py |
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# |
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# Copyright (C) 2013 to 2014 Tim Marston <tim@edm.am> |
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# |
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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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# |
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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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# |
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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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# |
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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. |
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Walker source: repo |
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Walker destination: home dir |
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Walker traversing: repo |
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""" |
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def __init__( self, ignore_files, updated_files = None ): |
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self.src_dir = the.repo.full_dir |
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self.dst_dir = the.full_fsdir |
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self.walk_list = updated_files if updated_files is not None else \ |
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self.generate_walk_list( the.repo.full_dir ) |
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self.ignore_files = ignore_files |
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self.changed = list() |
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def process( self, rel_file, src_file, src_type, dst_file, dst_type ): |
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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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# need to recurse) |
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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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if 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_type != dst_type: |
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self.changed.append( "%s (now %s)" % ( |
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rel_file, self.name_of_type( src_type ) ) ) |
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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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return False |
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# nothing to see here |
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return True |