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: / lib / node_modules / npm / node_modules / socks / build / common /
Filename : receivebuffer.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class ReceiveBuffer {
    constructor(size = 4096) {
        this._buffer = Buffer.allocUnsafe(size);
        this._offset = 0;
        this._originalSize = size;
    }
    get length() {
        return this._offset;
    }
    append(data) {
        if (!Buffer.isBuffer(data)) {
            throw new Error('Attempted to append a non-buffer instance to ReceiveBuffer.');
        }
        if (this._offset + data.length >= this._buffer.length) {
            const tmp = this._buffer;
            this._buffer = Buffer.allocUnsafe(Math.max(this._buffer.length + this._originalSize, this._buffer.length + data.length));
            tmp.copy(this._buffer);
        }
        data.copy(this._buffer, this._offset);
        return (this._offset += data.length);
    }
    peek(length) {
        if (length > this._offset) {
            throw new Error('Attempted to read beyond the bounds of the managed internal data.');
        }
        return this._buffer.slice(0, length);
    }
    get(length) {
        if (length > this._offset) {
            throw new Error('Attempted to read beyond the bounds of the managed internal data.');
        }
        const value = Buffer.allocUnsafe(length);
        this._buffer.slice(0, length).copy(value);
        this._buffer.copyWithin(0, length, length + this._offset - length);
        this._offset -= length;
        return value;
    }
}
exports.ReceiveBuffer = ReceiveBuffer;
//# sourceMappingURL=receivebuffer.js.map