122 lines
2.1 KiB
JavaScript
122 lines
2.1 KiB
JavaScript
module.exports.Writer = class {
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constructor() {
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this.buffer = Buffer.alloc(0);
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this.offset = 0;
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}
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writeBuffer(buff = Buffer.alloc(0)) {
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this.buffer = Buffer.concat([this.buffer, buff], this.buffer.length + buff.length);
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}
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writeBool(data = false) {
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this.writeByte(data ? 1 : 0);
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}
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writeByte(data = 0) {
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const buff = Buffer.alloc(1);
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buff.writeInt8(data, 0);
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this.writeBuffer(buff);
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}
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writeShort(data = 0) {
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const buff = Buffer.alloc(2);
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buff.writeIntBE(data, 0, 2);
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this.writeBuffer(buff);
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}
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writeInt(data = 0) {
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const buff = Buffer.alloc(4);
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buff.writeIntBE(data, 0, 4);
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this.writeBuffer(buff);
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}
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writeLong(data = 0) {
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const buff = Buffer.alloc(8);
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buff.writeBigInt64BE(BigInt(data), 0);
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this.writeBuffer(buff);
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}
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writeFloat(data = 0.0) {
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const buff = Buffer.alloc(4);
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buff.writeFloatBE(data, 0);
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this.writeBuffer(buff);
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}
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writeDouble(data = 0.0) {
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const buff = Buffer.alloc(8);
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buff.writeDoubleBE(data, 0);
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this.writeBuffer(buff);
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}
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writeString(string = "") {
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this.writeShort(string.length);
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for (let i = 0; i < string.length; i++) {
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this.writeShort(string.charCodeAt(i));
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}
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}
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}
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module.exports.Reader = class {
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constructor(buffer = Buffer.alloc(0)) {
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this.buffer = buffer;
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this.offset = 0;
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}
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readBool() {
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return this.readByte() == 0x01 ? true : false;
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}
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readByte() {
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const data = this.buffer.readInt8(this.offset);
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this.offset += 1;
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return data;
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}
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readShort() {
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const data = this.buffer.readIntBE(this.offset, 2);
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this.offset += 2;
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return data;
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}
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readInt() {
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const data = this.buffer.readIntBE(this.offset, 4);
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this.offset += 4;
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return data;
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}
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readLong() {
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const data = this.buffer.readBigInt64BE(this.offset);
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this.offset += 8;
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return data;
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}
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readFloat() {
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const data = this.buffer.readFloatBE(this.offset);
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this.offset += 4;
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return data;
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}
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readDouble() {
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const data = this.buffer.readDoubleBE(this.offset);
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this.offset += 8;
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return data;
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}
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readString() {
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const length = this.readShort();
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let data = "";
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for (let i = 0; i < length; i++) {
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data += String.fromCharCode(this.readShort());
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}
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return data;
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}
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} |