Last change
on this file since 188ee53 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1.1 KB
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[6a3a178] | 1 | import validate from './validate.js';
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| 2 |
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| 3 | function parse(uuid) {
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| 4 | if (!validate(uuid)) {
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| 5 | throw TypeError('Invalid UUID');
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| 6 | }
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| 7 |
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| 8 | let v;
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| 9 | const arr = new Uint8Array(16); // Parse ########-....-....-....-............
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| 10 |
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| 11 | arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;
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| 12 | arr[1] = v >>> 16 & 0xff;
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| 13 | arr[2] = v >>> 8 & 0xff;
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| 14 | arr[3] = v & 0xff; // Parse ........-####-....-....-............
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| 15 |
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| 16 | arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;
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| 17 | arr[5] = v & 0xff; // Parse ........-....-####-....-............
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| 18 |
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| 19 | arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;
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| 20 | arr[7] = v & 0xff; // Parse ........-....-....-####-............
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| 21 |
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| 22 | arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;
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| 23 | arr[9] = v & 0xff; // Parse ........-....-....-....-############
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| 24 | // (Use "/" to avoid 32-bit truncation when bit-shifting high-order bytes)
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| 25 |
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| 26 | arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;
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| 27 | arr[11] = v / 0x100000000 & 0xff;
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| 28 | arr[12] = v >>> 24 & 0xff;
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| 29 | arr[13] = v >>> 16 & 0xff;
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| 30 | arr[14] = v >>> 8 & 0xff;
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| 31 | arr[15] = v & 0xff;
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| 32 | return arr;
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| 33 | }
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| 34 |
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| 35 | export default parse; |
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