/stdhome : revision 17

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# along with this program. If not, see <http://www.gnu.org/licenses/>.

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from copy_base import CopyBaseWalker

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import filecmp, os, shutil

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from walker import Walker

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import stdhome.the as the

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from stdhome.file_matcher import FileMatcher

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class CopyInWalker( CopyBaseWalker ):

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class CopyInWalker( Walker ):

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"""The copy-in walker traverses the repo, copying-in matching files from the

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home directory.

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home directory. It will overwrite certin changes (modified files, files

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that have changed to symlinks), but barf at others.

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Walker source: home dir

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Walker destination: repo

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Walker traversing: repo

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"""

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def __init__( self, walk_files = None ):

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CopyBaseWalker.__init__( self )

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def __init__( self ):

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self.src_dir = the.full_home_dir

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self.dst_dir = the.repo.full_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.check_src_symlinks = True

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def print_op( self, rel_file, operation ):

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print " %s %s" % ( operation, rel_file )

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self.walk_list = self.generate_walk_list( the.repo.full_dir )

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self.changed = list()

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def process( self, rel_file, src, dst ):

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# directory (in repo)

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if dst.type == 'd':

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# if entity doesn't exist in home dir, delete directory in repo (and

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# don't recurse, obviously!)

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if src.type == '_':

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if the.verbose > 1: print " _>d " + rel_file

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shutil.rmtree( dst.file )

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return False

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# if entity is a directory in home dir, copy permissions to

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# diurectory in repo, as necessary, and recurse

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elif src.type == 'd':

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# TODO: should check permissions and only do as necessary

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if the.verbose > 1: print " d>d " + rel_file

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shutil.copystat( src.file, dst.file )

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return True

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# TODO: if entity is a directory symlink in the home direcotry,

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# silently accept it if it is explicitly matched by the accept list.

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# In which case, we'll also need to add this rel_file to a

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# not_deployed file list so that, after this walk, we can remove it

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# from the deployment's deploy_list. If we don't, the directory in

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# the repo will get copied-out.

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# elif src.link_type == 'd' and self.accept_list.matches( rel_file ):

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# if the.verbose > 1: print " d@d " + rel_file

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# return True

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# TODO: serious differences between ~/ and repo (e.g., files in one

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# that are directories in the other) should be ignored (e.g., not

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# copied-in). And the stuff that is ignored during copy-in should

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# also be ignored during copy-out and must not be added to the

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# deployment's deploy_files list. Since these ignored files and

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# directories are transparent to the user, they must be explicitly

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# permitted via an "ignore list" in ~/.stdhomerc. If these serious

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# differences are not matched by the ignore list, an error should be

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# shown (which will require a separate "check" walk of the repo, as

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# is done in copy_out).

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else:

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self.changed.append( "%s (%s => %s)" % ( rel_file,

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dst.get_type_name(), src.get_type_name() ) )

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return False

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# file (in repo)

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elif dst.type == 'f':

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# if entity doesn't exist in home dir, delete file in repo

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if src.type == '_':

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if the.verbose > 1: print " _>f " + rel_file

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os.unlink( dst.file )

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# if entity in home dir is a symlink, replace file in repo

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elif src.type == 'l':

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if the.verbose > 1: print " l>f " + rel_file

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os.unlink( dst.file )

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os.symlink( os.readlink( src.file ), dst.file )

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# if entity in home dir is a file, replace file in repo only if it

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# differs

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elif src.type == 'f':

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if not filecmp.cmp( src.file, dst.file ):

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if the.verbose > 1: print " f>f " + rel_file

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os.unlink( dst.file )

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shutil.copy( src.file, dst.file )

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shutil.copystat( src.file, dst.file )

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else:

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if the.verbose > 1: print " f=f " + rel_file

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# TODO: serious differences between ~/ and repo (e.g., files in one

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# that are directories in the other) should be ignored (e.g., not

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# copied-in). And the stuff that is ignored during copy-in should

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# also be ignored during copy-out and must not be added to the

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# deployment's deploy_files list. Since these ignored files and

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# directories are transparent to the user, they must be explicitly

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# permitted via an "ignore list" in ~/.stdhomerc. If these serious

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# differences are not matched by the ignore list, an error should be

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# show (which will require a separate "check" walk of the repo, as

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# is done in copy_out).

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else:

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self.changed.append( "%s (%s => %s)" % ( rel_file,

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dst.get_type_name(), src.get_type_name() ) )

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# symlink (in repo)

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elif dst.type == 'l':

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# if entity doesn't exist in home dir, delete symlink in repo

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if src.type == '_':

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if the.verbose > 1: print " _>l " + rel_file

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os.unlink( dst.file )

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# if entity in home dir is a symlink, replace symlink in repo only

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# if it differs

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elif src.type == 'l':

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if os.readlink( src.file ) != os.readlink( dst.file ):

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if the.verbose > 1: print " l>l " + rel_file

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os.unlink( dst.file )

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os.symlink( os.readlink( src.file ), dst.file )

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else:

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if the.verbose > 1: print " l=l " + rel_file

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# if entity in home dir is a file, replace symlink in repo

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elif src.type == 'f':

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if the.verbose > 1: print " f>l " + rel_file

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os.unlink( dst.file )

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shutil.copy( src.file, dst.file )

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shutil.copystat( src.file, dst.file )

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# TODO: serious differences between ~/ and repo (e.g., files in one

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# that are directories in the other) should be ignored (e.g., not

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# copied-in). And the stuff that is ignored during copy-in should

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# also be ignored during copy-out and must not be added to the

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# deployment's deploy_files list. Since these ignored files and

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# directories are transparent to the user, they must be explicitly

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# permitted via an "ignore list" in ~/.stdhomerc. If these serious

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# differences are not matched by the ignore list, an error should be

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# show (which will require a separate "check" walk of the repo, as

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# is done in copy_out).

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else:

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self.changed.append( "%s (%s => %s)" % ( rel_file,

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dst.get_type_name(). src.get_type_name() ) )

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# can not recurse on a non-directory

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return False