#
# BusyB, an automated build utility.
#
# Copyright (C) 1997-2005
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
from Expander import Expander
import os
class __SymbolManager:
def __init__(self):
self.envExpander = Expander( os.environ, '$')
self.symbols = {}
self.symbols['bang'] = '!'
self.symbols['dollar'] = '$'
self.symExpander = Expander(self.symbols, '!')
def setSymbol(self,name, value):
self.symbols[name]=str(value)
def getSymbol(self,name,default=''):
if self.symbols.has_key(name):
return self.symbols[name]
return default
def unsetSymbol(self,name):
del self.symbols[name]
def expand(self,text):
temp = self.envExpander.expand(text)
ret = self.symExpander.expand(temp)
return ret
__singleSymbolManager = __SymbolManager()
def getInstance():
return __singleSymbolManager
|