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"""
.. codeauthor:: Tsuyoshi Hombashi <[email protected]>
"""
import typing
from decimal import Decimal
from typing import Any, Optional, cast
import typepy
from mbstrdecoder import MultiByteStrDecoder
from typepy import (
Bool,
DateTime,
Dictionary,
Infinity,
Integer,
IpAddress,
Nan,
NoneType,
NullString,
RealNumber,
StrictLevel,
String,
Typecode,
TypeConversionError,
)
from typepy.type import AbstractType
from ._align import Align
from ._align_getter import align_getter
from ._base import DataPeropertyBase
from ._common import DefaultValue
from ._function import calc_ascii_char_width, get_number_of_digit
from ._preprocessor import Preprocessor
from .typing import FloatType, StrictLevelMap, TypeHint
class DataProperty(DataPeropertyBase):
__slots__ = (
"__data",
"__no_ansi_escape_data",
"__align",
"__integer_digits",
"__additional_format_len",
"__length",
"__ascii_char_width",
)
__type_class_list: typing.List[AbstractType] = [
NoneType,
Integer,
Infinity,
Nan,
IpAddress,
RealNumber,
Bool,
typepy.List,
Dictionary,
DateTime,
NullString,
String,
]
def __init__(
self,
data: Any,
preprocessor: Optional[Preprocessor] = None,
type_hint: TypeHint = None,
float_type: Optional[FloatType] = None,
format_flags: Optional[int] = None,
datetime_format_str: str = DefaultValue.DATETIME_FORMAT,
strict_level_map: Optional[StrictLevelMap] = None,
east_asian_ambiguous_width: int = 1,
) -> None:
super().__init__(
format_flags=format_flags,
is_formatting_float=True,
datetime_format_str=datetime_format_str,
east_asian_ambiguous_width=east_asian_ambiguous_width,
)
self.__additional_format_len: Optional[int] = None
self.__align: Optional[Align] = None
self.__ascii_char_width: Optional[int] = None
self.__integer_digits: Optional[int] = None
self.__length: Optional[int] = None
if preprocessor is None:
preprocessor = Preprocessor()
data, no_ansi_escape_data = preprocessor.preprocess(data)
self.__set_data(data, type_hint, float_type, strict_level_map)
if no_ansi_escape_data is None or len(data) == len(no_ansi_escape_data):
self.__no_ansi_escape_data: Optional[DataProperty] = None
else:
self.__no_ansi_escape_data = DataProperty(no_ansi_escape_data, float_type=float_type)
def __eq__(self, other: Any) -> bool:
if not isinstance(other, DataProperty):
return False
if self.typecode != other.typecode:
return False
if self.typecode == Typecode.NAN:
return True
return self.data == other.data
def __ne__(self, other: Any) -> bool:
if not isinstance(other, DataProperty):
return True
if self.typecode != other.typecode:
return True
if self.typecode == Typecode.NAN:
return False
return self.data != other.data
def __repr__(self) -> str:
element_list = []
if self.typecode == Typecode.DATETIME:
element_list.append(f"data={str(self.data):s}")
else:
try:
element_list.append("data=" + self.to_str())
except UnicodeEncodeError:
element_list.append(f"data={MultiByteStrDecoder(self.data).unicode_str}")
element_list.extend(
[
f"type={self.typename:s}",
f"align={self.align.align_string}",
f"ascii_width={self.ascii_char_width:d}",
]
)
if Integer(self.length).is_type():
element_list.append(f"length={self.length}")
if Integer(self.integer_digits).is_type():
element_list.append(f"int_digits={self.integer_digits}")
if Integer(self.decimal_places).is_type():
element_list.append(f"decimal_places={self.decimal_places}")
if Integer(self.additional_format_len).is_type():
element_list.append(f"extra_len={self.additional_format_len}")
return ", ".join(element_list)
@property
def align(self) -> Align:
if not self.__align:
if self.is_include_ansi_escape:
assert self.no_ansi_escape_dp
self.__align = self.no_ansi_escape_dp.align
else:
self.__align = align_getter.get_align_from_typecode(self.typecode)
assert self.__align
return self.__align
@property
def decimal_places(self) -> Optional[int]:
"""
:return:
Decimal places if the ``data`` type either ``float`` or
``decimal.Decimal``. Returns ``0`` if the ``data`` type is ``int``.
Otherwise, returns ``float("nan")``.
:rtype: int
"""
if self._decimal_places is None:
self.__set_digit()
return self._decimal_places
@property
def data(self) -> Any:
"""
:return: Original data value.
:rtype: Original data type.
"""
return self.__data
@property
def is_include_ansi_escape(self) -> bool:
if self.no_ansi_escape_dp is None:
return False
return self.length != self.no_ansi_escape_dp.length
@property
def no_ansi_escape_dp(self) -> Optional["DataProperty"]:
return self.__no_ansi_escape_data
@property
def length(self) -> Optional[int]:
"""
:return: Length of the ``data``.
:rtype: int
"""
if self.__length is None:
self.__length = self.__get_length()
return self.__length
@property
def ascii_char_width(self) -> int:
if self.__ascii_char_width is None:
self.__ascii_char_width = self.__calc_ascii_char_width()
return self.__ascii_char_width
@property
def integer_digits(self) -> Optional[int]:
"""
:return:
Integer digits if the ``data`` type either
``int``/``float``/``decimal.Decimal``.
Otherwise, returns ``None``.
:rtype: int
"""
if self.__integer_digits is None:
self.__set_digit()
return self.__integer_digits
@property
def additional_format_len(self) -> int:
if self.__additional_format_len is None:
self.__additional_format_len = self.__get_additional_format_len()
return self.__additional_format_len
def get_padding_len(self, ascii_char_width: int) -> int:
if self.typecode in (Typecode.LIST, Typecode.DICTIONARY):
unicode_str_len = DataProperty(MultiByteStrDecoder(str(self.data)).unicode_str).length
assert unicode_str_len
return max(
ascii_char_width - (self.ascii_char_width - unicode_str_len),
0,
)
try:
return max(ascii_char_width - (self.ascii_char_width - cast(int, self.length)), 0)
except TypeError:
return ascii_char_width
def to_str(self) -> str:
return self.format_str.format(self.data)
def __get_additional_format_len(self) -> int:
if not RealNumber(self.data, strip_ansi_escape=False).is_type():
return 0
format_len = 0
if Decimal(self.data) < 0:
# for minus character
format_len += 1
return format_len
def __get_base_float_len(self) -> int:
assert self.integer_digits is not None
assert self.decimal_places is not None
if any([self.integer_digits < 0, self.decimal_places < 0]):
raise ValueError("integer digits and decimal places must be greater or equals to zero")
float_len = self.integer_digits + self.decimal_places
if self.decimal_places > 0:
# for dot
float_len += 1
return float_len
def __get_length(self) -> Optional[int]:
if self.typecode in (Typecode.DICTIONARY, Typecode.LIST, Typecode.STRING):
return len(self.data)
return None
def __calc_ascii_char_width(self) -> int:
if self.typecode == Typecode.INTEGER:
return cast(int, self.integer_digits) + self.additional_format_len
if self.typecode == Typecode.REAL_NUMBER:
return self.__get_base_float_len() + self.additional_format_len
if self.typecode == Typecode.DATETIME:
try:
return len(self.to_str())
except ValueError:
# reach to this line if the year <1900.
# the datetime strftime() methods require year >= 1900.
return len(str(self.data))
if self.is_include_ansi_escape:
assert self.no_ansi_escape_dp
return self.no_ansi_escape_dp.ascii_char_width
try:
unicode_str = MultiByteStrDecoder(self.data).unicode_str
except ValueError:
unicode_str = self.to_str()
return calc_ascii_char_width(unicode_str, self._east_asian_ambiguous_width)
def __set_data(
self,
data: Any,
type_hint: TypeHint,
float_type: Optional[FloatType],
strict_level_map: Optional[StrictLevelMap],
) -> None:
if float_type is None:
float_type = DefaultValue.FLOAT_TYPE
if strict_level_map is None:
strict_level_map = DefaultValue.STRICT_LEVEL_MAP
if type_hint:
type_obj = type_hint(
data, strict_level=StrictLevel.MIN, float_type=float_type, strip_ansi_escape=False
)
self._typecode = type_obj.typecode
self.__data = type_obj.try_convert()
if type_hint(
self.__data,
strict_level=StrictLevel.MAX,
float_type=float_type,
strip_ansi_escape=False,
).is_type():
return
for type_class in self.__type_class_list:
strict_level = strict_level_map.get(
type_class(None).typecode, strict_level_map.get("default", StrictLevel.MAX)
)
if self.__try_convert_type(data, type_class, strict_level, float_type):
return
raise TypeConversionError(
f"failed to convert: data={data}, strict_level={strict_level_map}"
)
def __set_digit(self) -> None:
integer_digits, decimal_places = get_number_of_digit(self.__data)
self.__integer_digits = integer_digits
self._decimal_places = decimal_places
def __try_convert_type(
self,
data: Any,
type_class: AbstractType,
strict_level: int,
float_type: Optional[FloatType],
) -> bool:
type_obj = type_class(data, strict_level, float_type=float_type, strip_ansi_escape=False)
try:
self.__data = type_obj.convert()
except TypeConversionError:
return False
self._typecode = type_obj.typecode
return True
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