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