94 lines
3.2 KiB
JavaScript
94 lines
3.2 KiB
JavaScript
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module.exports = FieldPacket;
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function FieldPacket(options) {
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options = options || {};
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this.catalog = options.catalog;
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this.db = options.db;
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this.table = options.table;
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this.orgTable = options.orgTable;
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this.name = options.name;
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this.orgName = options.orgName;
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this.charsetNr = options.charsetNr;
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this.length = options.length;
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this.type = options.type;
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this.flags = options.flags;
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this.decimals = options.decimals;
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this.default = options.default;
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this.zeroFill = options.zeroFill;
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this.protocol41 = options.protocol41;
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}
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FieldPacket.prototype.parse = function(parser) {
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if (this.protocol41) {
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this.catalog = parser.parseLengthCodedString();
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this.db = parser.parseLengthCodedString();
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this.table = parser.parseLengthCodedString();
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this.orgTable = parser.parseLengthCodedString();
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this.name = parser.parseLengthCodedString();
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this.orgName = parser.parseLengthCodedString();
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if (parser.parseLengthCodedNumber() !== 0x0c) {
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var err = new TypeError('Received invalid field length');
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err.code = 'PARSER_INVALID_FIELD_LENGTH';
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throw err;
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}
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this.charsetNr = parser.parseUnsignedNumber(2);
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this.length = parser.parseUnsignedNumber(4);
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this.type = parser.parseUnsignedNumber(1);
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this.flags = parser.parseUnsignedNumber(2);
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this.decimals = parser.parseUnsignedNumber(1);
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var filler = parser.parseBuffer(2);
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if (filler[0] !== 0x0 || filler[1] !== 0x0) {
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var err = new TypeError('Received invalid filler');
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err.code = 'PARSER_INVALID_FILLER';
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throw err;
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}
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// parsed flags
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this.zeroFill = (this.flags & 0x0040 ? true : false);
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if (parser.reachedPacketEnd()) {
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return;
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}
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this.default = parser.parseLengthCodedString();
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} else {
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this.table = parser.parseLengthCodedString();
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this.name = parser.parseLengthCodedString();
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this.length = parser.parseUnsignedNumber(parser.parseUnsignedNumber(1));
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this.type = parser.parseUnsignedNumber(parser.parseUnsignedNumber(1));
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}
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};
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FieldPacket.prototype.write = function(writer) {
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if (this.protocol41) {
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writer.writeLengthCodedString(this.catalog);
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writer.writeLengthCodedString(this.db);
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writer.writeLengthCodedString(this.table);
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writer.writeLengthCodedString(this.orgTable);
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writer.writeLengthCodedString(this.name);
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writer.writeLengthCodedString(this.orgName);
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writer.writeLengthCodedNumber(0x0c);
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writer.writeUnsignedNumber(2, this.charsetNr || 0);
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writer.writeUnsignedNumber(4, this.length || 0);
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writer.writeUnsignedNumber(1, this.type || 0);
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writer.writeUnsignedNumber(2, this.flags || 0);
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writer.writeUnsignedNumber(1, this.decimals || 0);
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writer.writeFiller(2);
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if (this.default !== undefined) {
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writer.writeLengthCodedString(this.default);
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}
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} else {
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writer.writeLengthCodedString(this.table);
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writer.writeLengthCodedString(this.name);
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writer.writeUnsignedNumber(1, 0x01);
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writer.writeUnsignedNumber(1, this.length);
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writer.writeUnsignedNumber(1, 0x01);
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writer.writeUnsignedNumber(1, this.type);
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}
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};
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