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