MobileBlur

import struct


try:
    Exception, Warning
except ImportError:
    try:
        from exceptions import Exception, Warning
    except ImportError:
        import sys
        e = sys.modules['exceptions']
        Exception = e.Exception
        Warning = e.Warning
    

from constants import ER

class MySQLError(Exception):
    

    """Exception related to operation with MySQL."""


class Warning(Warning, MySQLError):

    """Exception raised for important warnings like data truncations
    while inserting, etc."""

           ER.NO_REFERENCED_ROW_2, ER.ROW_IS_REFERENCED, ER.ROW_IS_REFERENCED_2,
           ER.CANNOT_ADD_FOREIGN)
_map_error(NotSupportedError, ER.WARNING_NOT_COMPLETE_ROLLBACK,
           ER.NOT_SUPPORTED_YET, ER.FEATURE_DISABLED, ER.UNKNOWN_STORAGE_ENGINE)

del _map_error, ER

    

def _get_error_info(data):
    errno = struct.unpack('<h', data[1:3])[0]
    if data[3] == "#":
        # version 4.1
        sqlstate = data[4:9].decode("utf8")
        errorvalue = data[9:].decode("utf8")
        return (errno, sqlstate, errorvalue)
    else:
        # version 4.0
        return (errno, None, data[3:].decode("utf8"))

def _check_mysql_exception(errinfo):
    errno, sqlstate, errorvalue = errinfo 
    errno, sqlstate, errorvalue = errinfo
    errorclass = error_map.get(errno, None)
    if errorclass:
        raise errorclass, (errno,errorvalue)

    # couldn't find the right error number
    raise InternalError, (errno, errorvalue)

def raise_mysql_exception(data):
    errinfo = _get_error_info(data)
    _check_mysql_exception(errinfo)