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GrampsType: Avoid retranslating literal strings; rearrange metaclass code

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svn: r12742
This commit is contained in:
Gerald Britton 2009-06-30 18:29:45 +00:00
parent d022d0187b
commit 0351c2e6ca
1 changed files with 24 additions and 28 deletions
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52
src/gen/lib/grampstype.py
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@ -31,21 +31,7 @@ Base type for all gramps types.
#
#------------------------------------------------------------------------
from gettext import gettext as _
#-------------------------------------------------------------------------
#
# _init_map function
#
#-------------------------------------------------------------------------
def _init_map(data, key_col, data_col, blacklist=None):
"""Initialize the map, building a new map from the specified columns."""
if blacklist:
new_data = dict([(item[key_col], item[data_col])
for item in data if not item[0] in blacklist])
else:
new_data = dict([(item[key_col], item[data_col]) for item in data])
return new_data
_UNKNOWN = _('Unknown')
#-------------------------------------------------------------------------
#
@ -55,13 +41,29 @@ def _init_map(data, key_col, data_col, blacklist=None):
class GrampsTypeMeta(type):
"""Metaclass for :class:`~gen.lib.grampstype.GrampsType`.
The only thing this metaclass does is calling __class_init__ class method,
in order to create the class specific integer/string maps.
Create the class-specific integer/string maps.
"""
def __init__(mcs, name, bases, namespace):
type.__init__(mcs, name, bases, namespace)
mcs.__class_init__(namespace)
def __init__(cls, name, bases, namespace):
# Helper function to create the maps
def init_map(data, key_col, data_col, blacklist=None):
"""Initialize the map, building a new map from the specified columns."""
if blacklist:
return dict([(item[key_col], item[data_col])
for item in data if not item[0] in blacklist])
else:
return dict([(item[key_col], item[data_col]) for item in data])
# Call superclass initialization
type.__init__(cls, name, bases, namespace)
# Build the integer/string maps
cls._I2SMAP = init_map(cls._DATAMAP, 0, 1, cls._BLACKLIST)
cls._S2IMAP = init_map(cls._DATAMAP, 1, 0, cls._BLACKLIST)
cls._I2EMAP = init_map(cls._DATAMAP, 0, 2, cls._BLACKLIST)
cls._E2IMAP = init_map(cls._DATAMAP, 2, 0, cls._BLACKLIST)
#-------------------------------------------------------------------------
#
@ -108,13 +110,6 @@ class GrampsType(object):
self.__value = dict_['__value']
self.__string = dict_['__string']
@classmethod
def __class_init__(cls, namespace):
cls._I2SMAP = _init_map(cls._DATAMAP, 0, 1, cls._BLACKLIST)
cls._S2IMAP = _init_map(cls._DATAMAP, 1, 0, cls._BLACKLIST)
cls._I2EMAP = _init_map(cls._DATAMAP, 0, 2, cls._BLACKLIST)
cls._E2IMAP = _init_map(cls._DATAMAP, 2, 0, cls._BLACKLIST)
def __init__(self, value=None):
"""
Create a new type, initialize the value from one of several possible
@ -193,7 +188,7 @@ class GrampsType(object):
if self.__value == self._CUSTOM:
return self.__string
else:
return self._I2SMAP.get(self.__value, _('Unknown'))
return self._I2SMAP.get(self.__value, _UNKNOWN)
def __int__(self):
return self.__value
@ -235,5 +230,6 @@ class GrampsType(object):
return cmp(self.__string, value.string)
else:
return cmp(self.__value, value.value)
value = property(__int__, __set_int, None, "Returns or sets integer value")
string = property(__str__, __set_str, None, "Returns or sets string value")