Marc Mintel
5397309103
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26 lines
1.3 KiB
Plaintext
26 lines
1.3 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = v6ToV1;
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var _parse = _interopRequireDefault(require("./parse.js"));
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var _stringify = require("./stringify.js");
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function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
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/**
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* Convert a v6 UUID to a v1 UUID
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*
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* @param {string|Uint8Array} uuid - The v6 UUID to convert to v6
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* @returns {string|Uint8Array} The v1 UUID as the same type as the `uuid` arg
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* (string or Uint8Array)
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*/
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function v6ToV1(uuid) {
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const v6Bytes = typeof uuid === 'string' ? (0, _parse.default)(uuid) : uuid;
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const v1Bytes = _v6ToV1(v6Bytes);
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return typeof uuid === 'string' ? (0, _stringify.unsafeStringify)(v1Bytes) : v1Bytes;
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}
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// Do the field transformation needed for v6 -> v1
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function _v6ToV1(v6Bytes) {
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return Uint8Array.of((v6Bytes[3] & 0x0f) << 4 | v6Bytes[4] >> 4 & 0x0f, (v6Bytes[4] & 0x0f) << 4 | (v6Bytes[5] & 0xf0) >> 4, (v6Bytes[5] & 0x0f) << 4 | v6Bytes[6] & 0x0f, v6Bytes[7], (v6Bytes[1] & 0x0f) << 4 | (v6Bytes[2] & 0xf0) >> 4, (v6Bytes[2] & 0x0f) << 4 | (v6Bytes[3] & 0xf0) >> 4, 0x10 | (v6Bytes[0] & 0xf0) >> 4, (v6Bytes[0] & 0x0f) << 4 | (v6Bytes[1] & 0xf0) >> 4, v6Bytes[8], v6Bytes[9], v6Bytes[10], v6Bytes[11], v6Bytes[12], v6Bytes[13], v6Bytes[14], v6Bytes[15]);
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} |