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var Types = require('../constants/types');
var Charsets = require('../constants/charsets');
var Field = require('./Field');
var IEEE_754_BINARY_64_PRECISION = Math.pow(2, 53);
module.exports = RowDataPacket;
function RowDataPacket() {
}
Object.defineProperty(RowDataPacket.prototype, 'parse', {
configurable : true,
enumerable : false,
value : parse
});
Object.defineProperty(RowDataPacket.prototype, '_typeCast', {
configurable : true,
enumerable : false,
value : typeCast
});
function parse(parser, fieldPackets, typeCast, nestTables, connection) {
var self = this;
var next = function () {
return self._typeCast(fieldPacket, parser, connection.config.timezone, connection.config.supportBigNumbers, connection.config.bigNumberStrings, connection.config.dateStrings);
};
for (var i = 0; i < fieldPackets.length; i++) {
var fieldPacket = fieldPackets[i];
var value;
if (typeof typeCast === 'function') {
value = typeCast.apply(connection, [ new Field({ packet: fieldPacket, parser: parser }), next ]);
} else {
value = (typeCast)
? this._typeCast(fieldPacket, parser, connection.config.timezone, connection.config.supportBigNumbers, connection.config.bigNumberStrings, connection.config.dateStrings)
: ( (fieldPacket.charsetNr === Charsets.BINARY)
? parser.parseLengthCodedBuffer()
: parser.parseLengthCodedString() );
}
if (typeof nestTables === 'string' && nestTables.length) {
this[fieldPacket.table + nestTables + fieldPacket.name] = value;
} else if (nestTables) {
this[fieldPacket.table] = this[fieldPacket.table] || {};
this[fieldPacket.table][fieldPacket.name] = value;
} else {
this[fieldPacket.name] = value;
}
}
}
function typeCast(field, parser, timeZone, supportBigNumbers, bigNumberStrings, dateStrings) {
var numberString;
switch (field.type) {
case Types.TIMESTAMP:
case Types.TIMESTAMP2:
case Types.DATE:
case Types.DATETIME:
case Types.DATETIME2:
case Types.NEWDATE:
var dateString = parser.parseLengthCodedString();
if (typeMatch(field.type, dateStrings)) {
return dateString;
}
if (dateString === null) {
return null;
}
var originalString = dateString;
if (field.type === Types.DATE) {
dateString += ' 00:00:00';
}
if (timeZone !== 'local') {
dateString += ' ' + timeZone;
}
var dt = new Date(dateString);
if (isNaN(dt.getTime())) {
return originalString;
}
return dt;
case Types.TINY:
case Types.SHORT:
case Types.LONG:
case Types.INT24:
case Types.YEAR:
case Types.FLOAT:
case Types.DOUBLE:
numberString = parser.parseLengthCodedString();
return (numberString === null || (field.zeroFill && numberString[0] === '0'))
? numberString : Number(numberString);
case Types.NEWDECIMAL:
case Types.LONGLONG:
numberString = parser.parseLengthCodedString();
return (numberString === null || (field.zeroFill && numberString[0] === '0'))
? numberString
: ((supportBigNumbers && (bigNumberStrings || (Number(numberString) >= IEEE_754_BINARY_64_PRECISION) || Number(numberString) <= -IEEE_754_BINARY_64_PRECISION))
? numberString
: Number(numberString));
case Types.BIT:
return parser.parseLengthCodedBuffer();
case Types.STRING:
case Types.VAR_STRING:
case Types.TINY_BLOB:
case Types.MEDIUM_BLOB:
case Types.LONG_BLOB:
case Types.BLOB:
return (field.charsetNr === Charsets.BINARY)
? parser.parseLengthCodedBuffer()
: parser.parseLengthCodedString();
case Types.GEOMETRY:
return parser.parseGeometryValue();
default:
return parser.parseLengthCodedString();
}
}
function typeMatch(type, list) {
if (Array.isArray(list)) {
return list.indexOf(Types[type]) !== -1;
} else {
return Boolean(list);
}
}