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import datetime
import re
from cpython.datetime cimport date_new, datetime_new, import_datetime, time_new
from cpython.object cimport PyObject_Str
from cpython.unicode cimport PyUnicode_AsASCIIString, PyUnicode_Check, PyUnicode_Decode
from libc.stdio cimport sscanf
def int_to_boolean(value):
if value is None:
return None
return True if value else False
def to_str(value):
return PyObject_Str(value) if value is not None else None
def to_float(value):
return float(value) if value is not None else None
cdef inline bytes to_bytes(object value, str type_name):
try:
return PyUnicode_AsASCIIString(value)
except Exception as e:
raise ValueError(
f"Couldn't parse {type_name} string '{value!r}' "
"- value is not a string."
) from e
import_datetime() # required to call datetime_new/date_new/time_new
def str_to_datetime(value):
if value is None:
return None
cdef int numparsed
cdef unsigned int year, month, day, hour, minute, second, microsecond = 0
cdef bytes value_b = to_bytes(value, 'datetime')
cdef const char * string = value_b
numparsed = sscanf(string, "%4u-%2u-%2u %2u:%2u:%2u.%6u",
&year, &month, &day, &hour, &minute, &second, µsecond)
if numparsed < 6:
raise ValueError(
"Couldn't parse datetime string: '%s'" % (value)
)
return datetime_new(year, month, day, hour, minute, second, microsecond, None)
def str_to_date(value):
if value is None:
return None
cdef int numparsed
cdef unsigned int year, month, day
cdef bytes value_b = to_bytes(value, 'date')
cdef const char * string = value_b
numparsed = sscanf(string, "%4u-%2u-%2u", &year, &month, &day)
if numparsed != 3:
raise ValueError(
"Couldn't parse date string: '%s'" % (value)
)
return date_new(year, month, day)
def str_to_time(value):
if value is None:
return None
cdef int numparsed
cdef unsigned int hour, minute, second, microsecond = 0
cdef bytes value_b = to_bytes(value, 'time')
cdef const char * string = value_b
numparsed = sscanf(string, "%2u:%2u:%2u.%6u", &hour, &minute, &second, µsecond)
if numparsed < 3:
raise ValueError(
"Couldn't parse time string: '%s'" % (value)
)
return time_new(hour, minute, second, microsecond, None)
cdef class DecimalResultProcessor:
cdef object type_
cdef str format_
def __cinit__(self, type_, format_):
self.type_ = type_
self.format_ = format_
def process(self, object value):
if value is None:
return None
else:
return self.type_(self.format_ % value)
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