4
_AMD_KEY = r"Software\Allmydata"
5
_BDIR_KEY = 'Base Dir Path'
7
if sys.platform not in ('win32'):
8
raise ImportError, "registry cannot be used on non-windows systems"
9
class WindowsError(Exception): # stupid voodoo to appease pyflakes
12
def get_registry_setting(key, name, _topkey=None):
14
This function iterates through _topkey (if not None),
15
HKEY_CURRENT_USER, and HKEY_LOCAL_MACHINE before giving up.
17
@note: Only supports string values.
19
@param key: The key we are searching.
22
@param name: The name of the setting we are querying.
25
topkeys = [_winreg.HKEY_CURRENT_USER, _winreg.HKEY_LOCAL_MACHINE]
28
topkeys.insert(0, _topkey)
30
for topkey in topkeys:
32
regkey = _winreg.OpenKey(topkey, key)
34
sublen, vallen, timestamp = _winreg.QueryInfoKey(regkey)
35
for validx in xrange(vallen):
36
keyname, value, keytype = _winreg.EnumValue(regkey, validx)
37
if keyname == name and keytype == _winreg.REG_SZ:
42
# We didn't find the key:
43
raise KeyError, (key, name, "registry setting not found")
45
def set_registry_setting(key, name, data, reg_type=_winreg.REG_SZ,
46
_topkey=_winreg.HKEY_LOCAL_MACHINE, create_key_if_missing=True):
48
Sets a registry setting.
50
defaults to string values (REG_SZ) - overridable with reg_type.
53
regkey = _winreg.OpenKey(_topkey, key, 0, _winreg.KEY_SET_VALUE)
55
if create_key_if_missing:
56
regkey = _winreg.CreateKey(_topkey, key)
58
raise KeyError, (key, "registry key not found")
61
_winreg.DeleteValue(regkey, name)
65
_winreg.SetValueEx(regkey, name, 0, reg_type, data)
67
def get_registry_value(keyname):
69
retrieves a registry key value from within the Software/Allmydata Inc key
72
return get_registry_setting(_AMD_KEY, keyname)
76
def get_base_dir_path():
77
return get_registry_value(_BDIR_KEY)