def _file_name ( self ):
""" Gets the current trait data base file name.
"""
if self.file_name != '':
return self.file_name
return join( traits_home(), DB_NAME )
def _file_name(self):
""" Gets the current trait data base file name.
"""
if self.file_name != '':
return self.file_name
return join(traits_home(), DB_NAME)
def export ( self, package ):
"""Exports all of the traits in a specified package from the master
traits data base to a traits data base in the package's directory, or
to a data base called <package>_traits_db in the master traits data
base's directory if the package directory is not writable. The name
of the export file is returned as the result.
"""
# Substitute the global package for an empty package name:
if package == '':
package = 'global'
# Get the set of traits to be exported:
exported = {}
rdb = self.rdb
for name in self.names( package ):
exported[ name ] = rdb[ name ]
self.rdb = None
wdb = None
file_name = self.file_name
if package != 'global':
# Iterate over all elements of the Python path looking for the
# matching package directory to export to:
result = None
dirs = package.split( '.' )
for path in sys.path:
for dir in dirs:
path = join( path, dir )
if ((not exists( path )) or
(not exists( join( path, '__init__.py' ) ))):
break
else:
result = path
break
# If we found the package directory, attempt to set up a writable
# data base:
if result is not None:
self.file_name = result
try:
wdb = self.wdb
except:
pass
# If we could not create the data base in a package directory, then
# create it in the master trait data base directory:
if wdb is None:
result = join( traits_home(),
package.replace( '.', '_' ) + DB_NAME )
self.file_name = result
# Copy all of the trait definitions into the export data base:
self._batch_update = True
for name, trait in exported.items():
self( name, trait )
# Restore the original state and close the export data base:
self._batch_update = False
self.wdb = None
self.file_name = file_name
# Return the name of the export data base as the result:
return result
def export(self, package):
"""Exports all of the traits in a specified package from the master
traits data base to a traits data base in the package's directory, or
to a data base called <package>_traits_db in the master traits data
base's directory if the package directory is not writable. The name
of the export file is returned as the result.
"""
# Substitute the global package for an empty package name:
if package == '':
package = 'global'
# Get the set of traits to be exported:
exported = {}
rdb = self.rdb
for name in self.names(package):
exported[name] = rdb[name]
self.rdb = None
wdb = None
file_name = self.file_name
if package != 'global':
# Iterate over all elements of the Python path looking for the
# matching package directory to export to:
result = None
dirs = package.split('.')
for path in sys.path:
for dir in dirs:
path = join(path, dir)
if ((not exists(path))
or (not exists(join(path, '__init__.py')))):
break
else:
result = path
break
# If we found the package directory, attempt to set up a writable
# data base:
if result is not None:
self.file_name = result
try:
wdb = self.wdb
except:
pass
# If we could not create the data base in a package directory, then
# create it in the master trait data base directory:
if wdb is None:
result = join(traits_home(), package.replace('.', '_') + DB_NAME)
self.file_name = result
# Copy all of the trait definitions into the export data base:
self._batch_update = True
for name, trait in exported.items():
self(name, trait)
# Restore the original state and close the export data base:
self._batch_update = False
self.wdb = None
self.file_name = file_name
# Return the name of the export data base as the result:
return result
