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"use strict"; |
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Object.defineProperty(exports, "__esModule", { value: true }); |
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exports.decodePacket = void 0; |
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const commons_js_1 = require("./commons.js"); |
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const decodePacket = (encodedPacket, binaryType) => { |
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if (typeof encodedPacket !== "string") { |
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return { |
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type: "message", |
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data: mapBinary(encodedPacket, binaryType) |
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}; |
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} |
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const type = encodedPacket.charAt(0); |
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if (type === "b") { |
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const buffer = Buffer.from(encodedPacket.substring(1), "base64"); |
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return { |
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type: "message", |
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data: mapBinary(buffer, binaryType) |
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}; |
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} |
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if (!commons_js_1.PACKET_TYPES_REVERSE[type]) { |
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return commons_js_1.ERROR_PACKET; |
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} |
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return encodedPacket.length > 1 |
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? { |
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type: commons_js_1.PACKET_TYPES_REVERSE[type], |
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data: encodedPacket.substring(1) |
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} |
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: { |
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type: commons_js_1.PACKET_TYPES_REVERSE[type] |
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}; |
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}; |
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exports.decodePacket = decodePacket; |
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const mapBinary = (data, binaryType) => { |
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switch (binaryType) { |
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case "arraybuffer": |
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if (data instanceof ArrayBuffer) { |
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return data; |
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} |
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else if (Buffer.isBuffer(data)) { |
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return data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength); |
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} |
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else { |
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return data.buffer; |
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} |
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case "nodebuffer": |
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default: |
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if (Buffer.isBuffer(data)) { |
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return data; |
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} |
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else { |
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return Buffer.from(data); |
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} |
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} |
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}; |
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