github.com/nektos/act@v0.2.63/pkg/runner/testdata/actions/node12/node_modules/uuid/dist/v1.js (about)

     1  "use strict";
     2  
     3  Object.defineProperty(exports, "__esModule", {
     4    value: true
     5  });
     6  exports.default = void 0;
     7  
     8  var _rng = _interopRequireDefault(require("./rng.js"));
     9  
    10  var _stringify = _interopRequireDefault(require("./stringify.js"));
    11  
    12  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
    13  
    14  // **`v1()` - Generate time-based UUID**
    15  //
    16  // Inspired by https://github.com/LiosK/UUID.js
    17  // and http://docs.python.org/library/uuid.html
    18  let _nodeId;
    19  
    20  let _clockseq; // Previous uuid creation time
    21  
    22  
    23  let _lastMSecs = 0;
    24  let _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details
    25  
    26  function v1(options, buf, offset) {
    27    let i = buf && offset || 0;
    28    const b = buf || new Array(16);
    29    options = options || {};
    30    let node = options.node || _nodeId;
    31    let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not
    32    // specified.  We do this lazily to minimize issues related to insufficient
    33    // system entropy.  See #189
    34  
    35    if (node == null || clockseq == null) {
    36      const seedBytes = options.random || (options.rng || _rng.default)();
    37  
    38      if (node == null) {
    39        // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
    40        node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];
    41      }
    42  
    43      if (clockseq == null) {
    44        // Per 4.2.2, randomize (14 bit) clockseq
    45        clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;
    46      }
    47    } // UUID timestamps are 100 nano-second units since the Gregorian epoch,
    48    // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
    49    // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
    50    // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
    51  
    52  
    53    let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock
    54    // cycle to simulate higher resolution clock
    55  
    56    let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)
    57  
    58    const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression
    59  
    60    if (dt < 0 && options.clockseq === undefined) {
    61      clockseq = clockseq + 1 & 0x3fff;
    62    } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
    63    // time interval
    64  
    65  
    66    if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {
    67      nsecs = 0;
    68    } // Per 4.2.1.2 Throw error if too many uuids are requested
    69  
    70  
    71    if (nsecs >= 10000) {
    72      throw new Error("uuid.v1(): Can't create more than 10M uuids/sec");
    73    }
    74  
    75    _lastMSecs = msecs;
    76    _lastNSecs = nsecs;
    77    _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
    78  
    79    msecs += 12219292800000; // `time_low`
    80  
    81    const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
    82    b[i++] = tl >>> 24 & 0xff;
    83    b[i++] = tl >>> 16 & 0xff;
    84    b[i++] = tl >>> 8 & 0xff;
    85    b[i++] = tl & 0xff; // `time_mid`
    86  
    87    const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;
    88    b[i++] = tmh >>> 8 & 0xff;
    89    b[i++] = tmh & 0xff; // `time_high_and_version`
    90  
    91    b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
    92  
    93    b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
    94  
    95    b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`
    96  
    97    b[i++] = clockseq & 0xff; // `node`
    98  
    99    for (let n = 0; n < 6; ++n) {
   100      b[i + n] = node[n];
   101    }
   102  
   103    return buf || (0, _stringify.default)(b);
   104  }
   105  
   106  var _default = v1;
   107  exports.default = _default;