48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
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'use strict';
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const Packet = require('../packets/packet');
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class TextRow {
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constructor(columns) {
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this.columns = columns || [];
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}
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static fromPacket(packet) {
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// packet.reset(); // set offset to starting point?
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const columns = [];
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while (packet.haveMoreData()) {
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columns.push(packet.readLengthCodedString());
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}
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return new TextRow(columns);
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}
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static toPacket(columns, encoding) {
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const sequenceId = 0; // TODO remove, this is calculated now in connecton
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let length = 0;
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columns.forEach(val => {
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if (val === null || typeof val === 'undefined') {
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++length;
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return;
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}
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length += Packet.lengthCodedStringLength(val.toString(10), encoding);
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});
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const buffer = Buffer.allocUnsafe(length + 4);
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const packet = new Packet(sequenceId, buffer, 0, length + 4);
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packet.offset = 4;
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columns.forEach(val => {
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if (val === null) {
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packet.writeNull();
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return;
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}
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if (typeof val === 'undefined') {
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packet.writeInt8(0);
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return;
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}
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packet.writeLengthCodedString(val.toString(10), encoding);
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});
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return packet;
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}
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}
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module.exports = TextRow;
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