def _hashable(item):
"""
Returns the item if it is naturally hashable, otherwise it tries to use
ub.hash_data to make it hashable. Errors if it cannot.
"""
try:
hash(item)
except TypeError:
return util_hash.hash_data(item)
else:
return item
def _condense_cfgstr(self, cfgstr=None):
cfgstr = self._rectify_cfgstr(cfgstr)
# The 49 char maxlen is just long enough for an 8 char name, an 1 char
# underscore, and a 40 char sha1 hash.
max_len = 49
if len(cfgstr) > max_len:
condensed = util_hash.hash_data(cfgstr,
hasher=self.hasher,
base='hex')
condensed = condensed[0:max_len]
else:
condensed = cfgstr
return condensed
def _rectify_cfgstr(self, cfgstr=None):
cfgstr = self.cfgstr if cfgstr is None else cfgstr
if cfgstr is None and self.depends is not None:
from ubelt import util_hash
# lazy hashing of depends data into cfgstr
if isinstance(self.depends, str):
self.cfgstr = self.depends
else:
self.cfgstr = util_hash.hash_data(self.depends)
cfgstr = self.cfgstr
if cfgstr is None and self.enabled:
warnings.warn(
'No cfgstr given in Cacher constructor or call for {}'.format(
self.fname), UserWarning)
cfgstr = ''
if self.fname is None:
raise AssertionError('no fname specified in Cacher')
if self.dpath is None:
raise AssertionError('no dpath specified in Cacher')
return cfgstr
