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35 lines
1.1 KiB
35 lines
1.1 KiB
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; |