+++ /dev/null
-from __future__ import with_statement
-
-import unittest
-from fcntl import flock, LOCK_EX, LOCK_SH, LOCK_UN
-import contextlib as clib
-
-class struct(object):
- 'A simple namespace object.'
- def __init__(self, d = {}, **kwargs):
- 'd is the dictionary to update my __dict__ with.'
- self.__dict__.update(d)
- self.__dict__.update(kwargs)
-
-def dicts2struct(x):
- """
- Given a tree of lists/dicts, perform a deep traversal to transform all the
- dicts to structs.
- """
- if type(x) == dict:
- return struct((k, dicts2struct(v)) for k,v in x.iteritems())
- elif type(x) == list:
- return [dicts2struct(v) for v in x]
- else:
- return x
-
-@clib.contextmanager
-def lock_file(path, exclusive = True):
- with clib.closing(file(path, 'w')) as f:
- if exclusive:
- locktype = LOCK_EX
- else:
- locktype = LOCK_SH
- flock(f, locktype)
- try:
- yield
- finally:
- flock(f, LOCK_UN)
-
-#
-# Tests.
-#
-
-class common_tests(unittest.TestCase):
- def test_dicts2structs(self):
- dicts = {
- 'atom': 0,
- 'dict': { 'atom': 'atom', 'list': [1,2,3] },
- 'list': [ 'atom', {'key': 'value'} ]
- }
- structs = dicts2struct(dicts)
- self.assertEqual(structs.atom, dicts['atom'])
- self.assertEqual(structs.dict.atom, dicts['dict']['atom'])
- self.assertEqual(structs.dict.list, dicts['dict']['list'])
- self.assertEqual(structs.list[0], dicts['list'][0])
- self.assertEqual(structs.list[1].key, dicts['list'][1]['key'])
-
-if __name__ == '__main__':
- unittest.main()