1 """A more or less complete dictionary like interface for the RISC OS environment."""

     2 

     3 import riscos

     4 

     5 class _Environ:

     6     def __init__(self, initial = None):

     7         pass

     8     def __repr__(self):

     9         return repr(riscos.getenvdict())

    10     def __cmp__(self, dict):

    11         return cmp(riscos.getenvdict(), dict)

    12     def __len__(self):

    13         return len(riscos.getenvdict())

    14     def __getitem__(self, key):

    15         ret = riscos.getenv(key)

    16         if ret<>None:

    17             return ret

    18         else:

    19             raise KeyError

    20     def __setitem__(self, key, item):

    21         riscos.putenv(key, item)

    22     def __delitem__(self, key):

    23         riscos.delenv(key)

    24     def clear(self):

    25         # too dangerous on RISC OS

    26         pass

    27     def copy(self):

    28         return riscos.getenvdict()

    29     def keys(self): return riscos.getenvdict().keys()

    30     def items(self): return riscos.getenvdict().items()

    31     def values(self): return riscos.getenvdict().values()

    32     def has_key(self, key):

    33         value = riscos.getenv(key)

    34         return value<>None

    35     def __contains__(self, key):

    36         return riscos.getenv(key) is not None

    37     def update(self, dict):

    38         for k, v in dict.items():

    39             riscos.putenv(k, v)

    40     def get(self, key, failobj=None):

    41         value = riscos.getenv(key)

    42         if value<>None:

    43             return value

    44         else:

    45             return failobj