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uuid
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Filename :
v35.js
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var bytesToUuid = require('./bytesToUuid'); function uuidToBytes(uuid) { // Note: We assume we're being passed a valid uuid string var bytes = []; uuid.replace(/[a-fA-F0-9]{2}/g, function(hex) { bytes.push(parseInt(hex, 16)); }); return bytes; } function stringToBytes(str) { str = unescape(encodeURIComponent(str)); // UTF8 escape var bytes = new Array(str.length); for (var i = 0; i < str.length; i++) { bytes[i] = str.charCodeAt(i); } return bytes; } module.exports = function(name, version, hashfunc) { var generateUUID = function(value, namespace, buf, offset) { var off = buf && offset || 0; if (typeof(value) == 'string') value = stringToBytes(value); if (typeof(namespace) == 'string') namespace = uuidToBytes(namespace); if (!Array.isArray(value)) throw TypeError('value must be an array of bytes'); if (!Array.isArray(namespace) || namespace.length !== 16) throw TypeError('namespace must be uuid string or an Array of 16 byte values'); // Per 4.3 var bytes = hashfunc(namespace.concat(value)); bytes[6] = (bytes[6] & 0x0f) | version; bytes[8] = (bytes[8] & 0x3f) | 0x80; if (buf) { for (var idx = 0; idx < 16; ++idx) { buf[off+idx] = bytes[idx]; } } return buf || bytesToUuid(bytes); }; // Function#name is not settable on some platforms (#270) try { generateUUID.name = name; } catch (err) { } // Pre-defined namespaces, per Appendix C generateUUID.DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; generateUUID.URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8'; return generateUUID; };