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64 lines
1.6 KiB
64 lines
1.6 KiB
3 years ago
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import stringify from './stringify.js';
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import parse from './parse.js';
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function stringToBytes(str) {
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str = unescape(encodeURIComponent(str)); // UTF8 escape
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const bytes = [];
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for (let i = 0; i < str.length; ++i) {
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bytes.push(str.charCodeAt(i));
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}
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return bytes;
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}
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export const DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
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export const URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';
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export default function (name, version, hashfunc) {
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function generateUUID(value, namespace, buf, offset) {
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if (typeof value === 'string') {
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value = stringToBytes(value);
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}
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if (typeof namespace === 'string') {
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namespace = parse(namespace);
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}
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if (namespace.length !== 16) {
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throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');
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} // Compute hash of namespace and value, Per 4.3
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// Future: Use spread syntax when supported on all platforms, e.g. `bytes =
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// hashfunc([...namespace, ... value])`
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let bytes = new Uint8Array(16 + value.length);
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bytes.set(namespace);
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bytes.set(value, namespace.length);
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bytes = hashfunc(bytes);
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bytes[6] = bytes[6] & 0x0f | version;
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bytes[8] = bytes[8] & 0x3f | 0x80;
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if (buf) {
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offset = offset || 0;
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for (let i = 0; i < 16; ++i) {
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buf[offset + i] = bytes[i];
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}
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return buf;
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}
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return stringify(bytes);
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} // Function#name is not settable on some platforms (#270)
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try {
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generateUUID.name = name; // eslint-disable-next-line no-empty
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} catch (err) {} // For CommonJS default export support
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generateUUID.DNS = DNS;
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generateUUID.URL = URL;
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return generateUUID;
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}
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