114 lines
No EOL
2.2 KiB
TypeScript
114 lines
No EOL
2.2 KiB
TypeScript
// Copyright (c) Holly Stubbs (tgpholly) - Licensed under MIT
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// Check LICENSE in repository root for more information.
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import { getBufferClass } from "./BufferShim";
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export class WriterBase {
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public buffer:Buffer;
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public offset:number;
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public readonly resizable:boolean;
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public constructor(size:number = 0) {
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this.buffer = getBufferClass().alloc(size);
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this.offset = 0;
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this.resizable = size === 0;
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}
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public get writeOffset() {
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return this.offset;
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}
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public get length() {
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return this.buffer.length;
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}
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public toBuffer() {
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return this.buffer;
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}
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public toString() {
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return this.buffer.toString();
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}
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public writeBuffer(buffer:Buffer) {
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this.buffer = getBufferClass().concat([this.buffer, buffer], this.buffer.length + buffer.length);
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return this;
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}
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public writeUint8Array(array:Uint8Array) {
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this.writeBuffer(getBufferClass().from(array));
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return this;
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}
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public writeByte(value:number) {
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if (this.resizable) {
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const buffer = getBufferClass().alloc(1);
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buffer.writeInt8(value);
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this.writeBuffer(buffer);
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} else {
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this.buffer.writeInt8(value, this.offset);
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this.offset++;
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}
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return this;
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}
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public writeUByte(value:number) {
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if (this.resizable) {
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const buffer = getBufferClass().alloc(1);
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buffer.writeUInt8(value);
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this.writeBuffer(buffer);
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} else {
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this.buffer.writeUInt8(value, this.offset);
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this.offset++;
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}
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return this;
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}
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public writeBool(value:boolean|number) {
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if (typeof(value) === "number") {
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value = Boolean(value);
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}
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this.writeUByte(value ? 1 : 0);
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return this;
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}
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public writeStringAsBytes(text:string) {
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let buffer;
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if (this.resizable) {
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buffer = getBufferClass().alloc(text.length);
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} else {
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buffer = this.buffer;
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}
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for (let i = 0; i < text.length; i++) {
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buffer.writeUInt8(text.charCodeAt(i), i);
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}
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return this;
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}
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public writeUShortString(text:string) {
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this.writeUByte(text.length);
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for (let i = 0; i < text.length; i++) {
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this.writeUByte(text.charCodeAt(i));
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}
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return this;
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}
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public writeShortString(text:string) {
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this.writeByte(text.length);
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for (let i = 0; i < text.length; i++) {
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this.writeByte(text.charCodeAt(i));
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}
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return this;
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}
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} |