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24 lines
544 B
JavaScript
24 lines
544 B
JavaScript
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import rng from './rng.js';
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import stringify from './stringify.js';
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function v4(options, buf, offset) {
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options = options || {};
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var rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
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rnds[6] = rnds[6] & 0x0f | 0x40;
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rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided
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if (buf) {
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offset = offset || 0;
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for (var i = 0; i < 16; ++i) {
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buf[offset + i] = rnds[i];
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}
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return buf;
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}
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return stringify(rnds);
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}
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export default v4;
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