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# copy_out_walker.py
#
# Copyright (C) 2013 to 2014 Tim Marston <tim@edm.am>
#
# This file is part of stdhome (hereafter referred to as "this program").
# See http://ed.am/dev/stdhome for more information.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import filecmp, os, shutil
from walker import Walker
import stdhome.the as the
class CopyOutWalker( Walker ):
"""The copy-out walker traverses the repo, copying its content to the home
directory. It is run *after* checking for conflicts that might occur during
copy-out, so any conflicts that exist can be assumed to be unimportant and
disposable. In other words, this will happily overwrite stuff in the home
directory, without regard to its content.
Walker source: repo
Walker destination: home dir
Walker traversing: repo (or a provided file list, which may include stuff
that no longer exists in the repo
"""
def __init__( self, updated_files = None ):
self.src_dir = the.repo.full_dir
self.dst_dir = the.full_fsdir
self.walk_list = updated_files if updated_files is not None else \
self.generate_walk_list( the.repo.full_dir )
def process( self, rel_file, src_file, src_type, dst_file, dst_type ):
# directory (in repo)
if src_type == 'd':
# if entity doesn't exist in home dir, create directory (no need to
# recurse, since we're copying the whole directory)
if dst_type == '_':
if the.verbose: print " _<d " + rel_file
os.mkdir( dst_file )
shutil.copystat( src_file, dst_file )
return False
# if entity is a file or symlink in home dir, replace it with
# directory (no need to recurse, since we're copying the whole
# directory)
elif dst_type == 'f' or dst_type == 'l':
if the.verbose: print " %s<d %s" % ( dst_type, rel_file )
os.unlink( dst_file )
os.mkdir( dst_file )
shutil.copystat( src_file, dst_file )
return False
# if entity is a directory in home dir, copy permissions, as
# required (and recurse)
elif dst_type == 'd':
# TODO: should check permission and only do as necessary
if the.verbose: print " d<d " + rel_file
shutil.copystat( src_file, dst_file )
return True
else:
raise NotImplementedError()
# file (in repo)
if src_type == 'f':
# if entity doesn't exist in home dir, copy file
if dst_type == '_':
if the.verbose: print " _<f " + rel_file
shutil.copy( src_file, dst_file )
shutil.copystat( src_file, dst_file )
# if entity is a symlink in home dir, replace it with file
elif dst_type == 'l':
if the.verbose: print " l<f " + rel_file
os.unlink( dst_file )
shutil.copy( src_file, dst_file )
shutil.copystat( src_file, dst_file )
# if entity is a file in home dir, replace it only if it differs
elif dst_type == 'f':
if not filecmp.cmp( src_file, dst_file ):
if the.verbose: print " f<f " + rel_file
os.unlink( dst_file )
shutil.copy( src_file, dst_file )
shutil.copystat( src_file, dst_file )
else:
if the.verbose: print " f=f " + rel_file
# if entity is a directory in home dir, replace it with file
elif dst_type == 'd':
if the.verbose: print " d<f " + rel_file
shutil.rmtree( dst_file )
shutil.copy( src_file, dst_file )
shutil.copystat( src_file, dst_file )
else:
raise NotImplementedError()
# link (in repo)
if src_type == 'l':
# if entity doesn't exist in home dir, copy symlink
if dst_type == '_':
if the.verbose: print " _<l " + rel_file
os.symlink( os.readlink( src_file ), dst_file )
# if entity is a symlink in home dir, replace it only if it differs
elif dst_type == 'l':
if os.readlink( src_file ) != os.readlink( dst_file ):
if the.verbose: print " l<l " + rel_file
os.unlink( dst_file )
os.symlink( os.readlink( src_file ), dst_file )
else:
if the.verbose: print " l=l " + rel_file
# if entity is a file in home dir, replace it with file
elif dst_type == 'f':
if the.verbose: print " f<l " + rel_file
os.unlink( dst_file )
os.symlink( os.readlink( src_file ), dst_file )
# if entity is a directory in home dir, replace it with file
elif dst_type == 'd':
if the.verbose: print " d<l " + rel_file
shutil.rmtree( dst_file )
os.symlink( os.readlink( src_file ), dst_file )
else:
raise NotImplementedError()
# TODO: handle files missing in repo -- we may or may not want to remove
# them from home dir, depending on whether we wanted to delete them
# remotely or whether we just wanted to remove them from version control
# non-directories can not be recursed in to
return False
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