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Current File : /opt/cloudlinux/venv/lib/python3.11/site-packages/pymysql/converters.py
import datetime
from decimal import Decimal
import re
import time

from .err import ProgrammingError
from .constants import FIELD_TYPE


def escape_item(val, charset, mapping=None):
    if mapping is None:
        mapping = encoders
    encoder = mapping.get(type(val))

    # Fallback to default when no encoder found
    if not encoder:
        try:
            encoder = mapping[str]
        except KeyError:
            raise TypeError("no default type converter defined")

    if encoder in (escape_dict, escape_sequence):
        val = encoder(val, charset, mapping)
    else:
        val = encoder(val, mapping)
    return val


def escape_dict(val, charset, mapping=None):
    n = {}
    for k, v in val.items():
        quoted = escape_item(v, charset, mapping)
        n[k] = quoted
    return n


def escape_sequence(val, charset, mapping=None):
    n = []
    for item in val:
        quoted = escape_item(item, charset, mapping)
        n.append(quoted)
    return "(" + ",".join(n) + ")"


def escape_set(val, charset, mapping=None):
    return ",".join([escape_item(x, charset, mapping) for x in val])


def escape_bool(value, mapping=None):
    return str(int(value))


def escape_int(value, mapping=None):
    return str(value)


def escape_float(value, mapping=None):
    s = repr(value)
    if s in ("inf", "-inf", "nan"):
        raise ProgrammingError("%s can not be used with MySQL" % s)
    if "e" not in s:
        s += "e0"
    return s


_escape_table = [chr(x) for x in range(128)]
_escape_table[0] = "\\0"
_escape_table[ord("\\")] = "\\\\"
_escape_table[ord("\n")] = "\\n"
_escape_table[ord("\r")] = "\\r"
_escape_table[ord("\032")] = "\\Z"
_escape_table[ord('"')] = '\\"'
_escape_table[ord("'")] = "\\'"


def escape_string(value, mapping=None):
    """escapes *value* without adding quote.

    Value should be unicode
    """
    return value.translate(_escape_table)


def escape_bytes_prefixed(value, mapping=None):
    return "_binary'%s'" % value.decode("ascii", "surrogateescape").translate(
        _escape_table
    )


def escape_bytes(value, mapping=None):
    return "'%s'" % value.decode("ascii", "surrogateescape").translate(_escape_table)


def escape_str(value, mapping=None):
    return "'%s'" % escape_string(str(value), mapping)


def escape_None(value, mapping=None):
    return "NULL"


def escape_timedelta(obj, mapping=None):
    seconds = int(obj.seconds) % 60
    minutes = int(obj.seconds // 60) % 60
    hours = int(obj.seconds // 3600) % 24 + int(obj.days) * 24
    if obj.microseconds:
        fmt = "'{0:02d}:{1:02d}:{2:02d}.{3:06d}'"
    else:
        fmt = "'{0:02d}:{1:02d}:{2:02d}'"
    return fmt.format(hours, minutes, seconds, obj.microseconds)


def escape_time(obj, mapping=None):
    if obj.microsecond:
        fmt = "'{0.hour:02}:{0.minute:02}:{0.second:02}.{0.microsecond:06}'"
    else:
        fmt = "'{0.hour:02}:{0.minute:02}:{0.second:02}'"
    return fmt.format(obj)


def escape_datetime(obj, mapping=None):
    if obj.microsecond:
        fmt = (
            "'{0.year:04}-{0.month:02}-{0.day:02}"
            + " {0.hour:02}:{0.minute:02}:{0.second:02}.{0.microsecond:06}'"
        )
    else:
        fmt = "'{0.year:04}-{0.month:02}-{0.day:02} {0.hour:02}:{0.minute:02}:{0.second:02}'"
    return fmt.format(obj)


def escape_date(obj, mapping=None):
    fmt = "'{0.year:04}-{0.month:02}-{0.day:02}'"
    return fmt.format(obj)


def escape_struct_time(obj, mapping=None):
    return escape_datetime(datetime.datetime(*obj[:6]))


def Decimal2Literal(o, d):
    return format(o, "f")


def _convert_second_fraction(s):
    if not s:
        return 0
    # Pad zeros to ensure the fraction length in microseconds
    s = s.ljust(6, "0")
    return int(s[:6])


DATETIME_RE = re.compile(
    r"(\d{1,4})-(\d{1,2})-(\d{1,2})[T ](\d{1,2}):(\d{1,2}):(\d{1,2})(?:.(\d{1,6}))?"
)


def convert_datetime(obj):
    """Returns a DATETIME or TIMESTAMP column value as a datetime object:

      >>> convert_datetime('2007-02-25 23:06:20')
      datetime.datetime(2007, 2, 25, 23, 6, 20)
      >>> convert_datetime('2007-02-25T23:06:20')
      datetime.datetime(2007, 2, 25, 23, 6, 20)

    Illegal values are returned as str:

      >>> convert_datetime('2007-02-31T23:06:20')
      '2007-02-31T23:06:20'
      >>> convert_datetime('0000-00-00 00:00:00')
      '0000-00-00 00:00:00'
    """
    if isinstance(obj, (bytes, bytearray)):
        obj = obj.decode("ascii")

    m = DATETIME_RE.match(obj)
    if not m:
        return convert_date(obj)

    try:
        groups = list(m.groups())
        groups[-1] = _convert_second_fraction(groups[-1])
        return datetime.datetime(*[int(x) for x in groups])
    except ValueError:
        return convert_date(obj)


TIMEDELTA_RE = re.compile(r"(-)?(\d{1,3}):(\d{1,2}):(\d{1,2})(?:.(\d{1,6}))?")


def convert_timedelta(obj):
    """Returns a TIME column as a timedelta object:

      >>> convert_timedelta('25:06:17')
      datetime.timedelta(days=1, seconds=3977)
      >>> convert_timedelta('-25:06:17')
      datetime.timedelta(days=-2, seconds=82423)

    Illegal values are returned as string:

      >>> convert_timedelta('random crap')
      'random crap'

    Note that MySQL always returns TIME columns as (+|-)HH:MM:SS, but
    can accept values as (+|-)DD HH:MM:SS. The latter format will not
    be parsed correctly by this function.
    """
    if isinstance(obj, (bytes, bytearray)):
        obj = obj.decode("ascii")

    m = TIMEDELTA_RE.match(obj)
    if not m:
        return obj

    try:
        groups = list(m.groups())
        groups[-1] = _convert_second_fraction(groups[-1])
        negate = -1 if groups[0] else 1
        hours, minutes, seconds, microseconds = groups[1:]

        tdelta = (
            datetime.timedelta(
                hours=int(hours),
                minutes=int(minutes),
                seconds=int(seconds),
                microseconds=int(microseconds),
            )
            * negate
        )
        return tdelta
    except ValueError:
        return obj


TIME_RE = re.compile(r"(\d{1,2}):(\d{1,2}):(\d{1,2})(?:.(\d{1,6}))?")


def convert_time(obj):
    """Returns a TIME column as a time object:

      >>> convert_time('15:06:17')
      datetime.time(15, 6, 17)

    Illegal values are returned as str:

      >>> convert_time('-25:06:17')
      '-25:06:17'
      >>> convert_time('random crap')
      'random crap'

    Note that MySQL always returns TIME columns as (+|-)HH:MM:SS, but
    can accept values as (+|-)DD HH:MM:SS. The latter format will not
    be parsed correctly by this function.

    Also note that MySQL's TIME column corresponds more closely to
    Python's timedelta and not time. However if you want TIME columns
    to be treated as time-of-day and not a time offset, then you can
    use set this function as the converter for FIELD_TYPE.TIME.
    """
    if isinstance(obj, (bytes, bytearray)):
        obj = obj.decode("ascii")

    m = TIME_RE.match(obj)
    if not m:
        return obj

    try:
        groups = list(m.groups())
        groups[-1] = _convert_second_fraction(groups[-1])
        hours, minutes, seconds, microseconds = groups
        return datetime.time(
            hour=int(hours),
            minute=int(minutes),
            second=int(seconds),
            microsecond=int(microseconds),
        )
    except ValueError:
        return obj


def convert_date(obj):
    """Returns a DATE column as a date object:

      >>> convert_date('2007-02-26')
      datetime.date(2007, 2, 26)

    Illegal values are returned as str:

      >>> convert_date('2007-02-31')
      '2007-02-31'
      >>> convert_date('0000-00-00')
      '0000-00-00'
    """
    if isinstance(obj, (bytes, bytearray)):
        obj = obj.decode("ascii")
    try:
        return datetime.date(*[int(x) for x in obj.split("-", 2)])
    except ValueError:
        return obj


def through(x):
    return x


# def convert_bit(b):
#    b = "\x00" * (8 - len(b)) + b # pad w/ zeroes
#    return struct.unpack(">Q", b)[0]
#
#     the snippet above is right, but MySQLdb doesn't process bits,
#     so we shouldn't either
convert_bit = through


encoders = {
    bool: escape_bool,
    int: escape_int,
    float: escape_float,
    str: escape_str,
    bytes: escape_bytes,
    tuple: escape_sequence,
    list: escape_sequence,
    set: escape_sequence,
    frozenset: escape_sequence,
    dict: escape_dict,
    type(None): escape_None,
    datetime.date: escape_date,
    datetime.datetime: escape_datetime,
    datetime.timedelta: escape_timedelta,
    datetime.time: escape_time,
    time.struct_time: escape_struct_time,
    Decimal: Decimal2Literal,
}


decoders = {
    FIELD_TYPE.BIT: convert_bit,
    FIELD_TYPE.TINY: int,
    FIELD_TYPE.SHORT: int,
    FIELD_TYPE.LONG: int,
    FIELD_TYPE.FLOAT: float,
    FIELD_TYPE.DOUBLE: float,
    FIELD_TYPE.LONGLONG: int,
    FIELD_TYPE.INT24: int,
    FIELD_TYPE.YEAR: int,
    FIELD_TYPE.TIMESTAMP: convert_datetime,
    FIELD_TYPE.DATETIME: convert_datetime,
    FIELD_TYPE.TIME: convert_timedelta,
    FIELD_TYPE.DATE: convert_date,
    FIELD_TYPE.BLOB: through,
    FIELD_TYPE.TINY_BLOB: through,
    FIELD_TYPE.MEDIUM_BLOB: through,
    FIELD_TYPE.LONG_BLOB: through,
    FIELD_TYPE.STRING: through,
    FIELD_TYPE.VAR_STRING: through,
    FIELD_TYPE.VARCHAR: through,
    FIELD_TYPE.DECIMAL: Decimal,
    FIELD_TYPE.NEWDECIMAL: Decimal,
}


# for MySQLdb compatibility
conversions = encoders.copy()
conversions.update(decoders)
Thing2Literal = escape_str

# Run doctests with `pytest --doctest-modules pymysql/converters.py`

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