def get(self):
form = CalculatorForm(self.request.arguments)
message = None
convert_direction = self.get_argument('convert', None)
if convert_direction and form.validate():
try:
if convert_direction == 'up':
source_number = self.get_argument('number_2')
source_alphabet = self.get_argument('alphabet_2')
target_alphabet = self.get_argument('alphabet_1')
num = str_to_int(source_number, source_alphabet)
form.number_1.data = int_to_str(num, target_alphabet)
else:
source_number = self.get_argument('number_1')
source_alphabet = self.get_argument('alphabet_1')
target_alphabet = self.get_argument('alphabet_2')
num = str_to_int(source_number, source_alphabet)
form.number_2.data = int_to_str(num, target_alphabet)
except ValueError as error:
message = str(error)
self.render('calculator.html', form=form, message=message)
def get(self):
form = CalculatorForm(self.request.arguments)
message = None
convert_direction = self.get_argument('convert', None)
if convert_direction and form.validate():
try:
if convert_direction == 'up':
source_number = self.get_argument('number_2')
source_alphabet = self.get_argument('alphabet_2')
target_alphabet = self.get_argument('alphabet_1')
num = str_to_int(source_number, source_alphabet)
form.number_1.data = int_to_str(num, target_alphabet)
else:
source_number = self.get_argument('number_1')
source_alphabet = self.get_argument('alphabet_1')
target_alphabet = self.get_argument('alphabet_2')
num = str_to_int(source_number, source_alphabet)
form.number_2.data = int_to_str(num, target_alphabet)
except ValueError as error:
message = str(error)
self.render('calculator.html', form=form, message=message)
def test_int_to_str(self):
self.assertEqual('a', int_to_str(0, 'abcde'))
self.assertEqual('1E0F3', int_to_str(123123, '0123456789ABCDEF'))
self.assertEqual(
'w1R',
int_to_str(
123123,
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
))
def to_dict(self, with_shortcode=False):
ans = {x.key:x.value for x in object_state(self).attrs}
ans.update({
'project': self.project.to_dict(),
'datetime_claimed': calendar.timegm(self.datetime_claimed.utctimetuple()) if self.datetime_claimed else None,
})
if with_shortcode:
ans['lower_shortcode'] = int_to_str(self.lower_sequence_num, self.project.alphabet)
ans['upper_shortcode'] = int_to_str(self.upper_sequence_num, self.project.alphabet)
return ans
def to_dict(self, with_shortcode=False):
ans = {x.key: x.value for x in object_state(self).attrs}
ans.update({
'project':
self.project.to_dict(),
'datetime_claimed':
calendar.timegm(self.datetime_claimed.utctimetuple())
if self.datetime_claimed else None,
})
if with_shortcode:
ans['lower_shortcode'] = int_to_str(self.lower_sequence_num,
self.project.alphabet)
ans['upper_shortcode'] = int_to_str(self.upper_sequence_num,
self.project.alphabet)
return ans
def to_dict(self, with_shortcode=False):
ans = {
'id': self.id,
'project': self.project.to_dict(),
'lower_sequence_num': self.lower_sequence_num,
'upper_sequence_num': self.upper_sequence_num,
'datetime_claimed': calendar.timegm(self.datetime_claimed.utctimetuple()) if self.datetime_claimed else None,
'tamper_key': self.tamper_key,
'username': self.username,
'ip_address': self.ip_address,
}
if with_shortcode:
ans['lower_shortcode'] = int_to_str(self.lower_sequence_num, self.project.alphabet)
ans['upper_shortcode'] = int_to_str(self.upper_sequence_num, self.project.alphabet)
return ans
def transform_sequence_num(self, sequence_num):
seed = struct.pack('>Q', sequence_num)
hasher = hashlib.md5(seed)
digest = hasher.digest()
num = struct.unpack('>Q', digest[:8])[0]
shortcode = alphabet.int_to_str(num, self.params['alphabet'])
shortcode = shortcode[-self.get_shortcode_width():]
return shortcode
def lower_shortcode(self):
return int_to_str(self.lower_sequence_num, self.alphabet)
def test_int_to_str(self):
self.assertEqual('a', int_to_str(0, 'abcde'))
self.assertEqual('1E0F3', int_to_str(123123, '0123456789ABCDEF'))
self.assertEqual('w1R', int_to_str(123123, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'))
def lower_shortcode(self):
return int_to_str(self.lower_sequence_num, self.alphabet)
def transform_sequence_num(self, sequence_number):
return alphabet.int_to_str(
sequence_number, self.params['alphabet']
)
def transform_sequence_num(self, sequence_number):
return alphabet.int_to_str(
sequence_number, self.params['alphabet']
)
