diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Demo/classes/Dbm.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Demo/classes/Dbm.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,66 @@ +# A wrapper around the (optional) built-in class dbm, supporting keys +# and values of almost any type instead of just string. +# (Actually, this works only for keys and values that can be read back +# correctly after being converted to a string.) + + +class Dbm: + + def __init__(self, filename, mode, perm): + import dbm + self.db = dbm.open(filename, mode, perm) + + def __repr__(self): + s = '' + for key in self.keys(): + t = repr(key) + ': ' + repr(self[key]) + if s: t = ', ' + t + s = s + t + return '{' + s + '}' + + def __len__(self): + return len(self.db) + + def __getitem__(self, key): + return eval(self.db[repr(key)]) + + def __setitem__(self, key, value): + self.db[repr(key)] = repr(value) + + def __delitem__(self, key): + del self.db[repr(key)] + + def keys(self): + res = [] + for key in self.db.keys(): + res.append(eval(key)) + return res + + def has_key(self, key): + return self.db.has_key(repr(key)) + + +def test(): + d = Dbm('@dbm', 'rw', 0600) + print d + while 1: + try: + key = input('key: ') + if d.has_key(key): + value = d[key] + print 'currently:', value + value = input('value: ') + if value is None: + del d[key] + else: + d[key] = value + except KeyboardInterrupt: + print '' + print d + except EOFError: + print '[eof]' + break + print d + + +test()