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43 lines
1.5 KiB
43 lines
1.5 KiB
3 years ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.ReceiveBuffer = void 0;
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class ReceiveBuffer {
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constructor(size = 4096) {
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this.buffer = Buffer.allocUnsafe(size);
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this.offset = 0;
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this.originalSize = size;
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}
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get length() {
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return this.offset;
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}
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append(data) {
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if (!Buffer.isBuffer(data)) {
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throw new Error('Attempted to append a non-buffer instance to ReceiveBuffer.');
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}
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if (this.offset + data.length >= this.buffer.length) {
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const tmp = this.buffer;
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this.buffer = Buffer.allocUnsafe(Math.max(this.buffer.length + this.originalSize, this.buffer.length + data.length));
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tmp.copy(this.buffer);
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}
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data.copy(this.buffer, this.offset);
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return (this.offset += data.length);
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}
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peek(length) {
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if (length > this.offset) {
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throw new Error('Attempted to read beyond the bounds of the managed internal data.');
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}
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return this.buffer.slice(0, length);
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}
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get(length) {
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if (length > this.offset) {
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throw new Error('Attempted to read beyond the bounds of the managed internal data.');
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}
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const value = Buffer.allocUnsafe(length);
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this.buffer.slice(0, length).copy(value);
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this.buffer.copyWithin(0, length, length + this.offset - length);
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this.offset -= length;
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return value;
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}
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}
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exports.ReceiveBuffer = ReceiveBuffer;
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//# sourceMappingURL=receivebuffer.js.map
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