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35 lines
1.1 KiB
35 lines
1.1 KiB
4 weeks ago
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import validate from './validate.js';
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function parse(uuid) {
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if (!validate(uuid)) {
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throw TypeError('Invalid UUID');
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}
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let v;
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const arr = new Uint8Array(16); // Parse ########-....-....-....-............
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arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;
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arr[1] = v >>> 16 & 0xff;
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arr[2] = v >>> 8 & 0xff;
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arr[3] = v & 0xff; // Parse ........-####-....-....-............
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arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;
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arr[5] = v & 0xff; // Parse ........-....-####-....-............
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arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;
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arr[7] = v & 0xff; // Parse ........-....-....-####-............
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arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;
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arr[9] = v & 0xff; // Parse ........-....-....-....-############
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// (Use "/" to avoid 32-bit truncation when bit-shifting high-order bytes)
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arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;
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arr[11] = v / 0x100000000 & 0xff;
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arr[12] = v >>> 24 & 0xff;
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arr[13] = v >>> 16 & 0xff;
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arr[14] = v >>> 8 & 0xff;
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arr[15] = v & 0xff;
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return arr;
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}
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export default parse;
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