diff options
Diffstat (limited to 'std/uuid/v1.ts')
-rw-r--r-- | std/uuid/v1.ts | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/std/uuid/v1.ts b/std/uuid/v1.ts deleted file mode 100644 index b97c704e7..000000000 --- a/std/uuid/v1.ts +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license. -import { bytesToUuid } from "./_common.ts"; - -const UUID_RE = new RegExp( - "^[0-9a-f]{8}-[0-9a-f]{4}-1[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$", - "i", -); - -/** - * Validates the UUID v1 - * @param id UUID value - */ -export function validate(id: string): boolean { - return UUID_RE.test(id); -} - -let _nodeId: number[]; -let _clockseq: number; - -let _lastMSecs = 0; -let _lastNSecs = 0; - -type V1Options = { - node?: number[]; - clockseq?: number; - msecs?: number; - nsecs?: number; - random?: number[]; - rng?: () => number[]; -}; - -/** - * Generates a RFC4122 v1 UUID (time-based) - * @param options Can use RFC time sequence values as overwrites - * @param buf Can allow the UUID to be written in byte-form starting at the offset - * @param offset Index to start writing on the UUID bytes in buffer - */ -export function generate( - options?: V1Options | null, - buf?: number[], - offset?: number, -): string | number[] { - let i = (buf && offset) || 0; - const b = buf || []; - - options = options || {}; - let node = options.node || _nodeId; - let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; - - if (node == null || clockseq == null) { - // deno-lint-ignore no-explicit-any - const seedBytes: any = options.random || - options.rng || - crypto.getRandomValues(new Uint8Array(16)); - if (node == null) { - node = _nodeId = [ - seedBytes[0] | 0x01, - seedBytes[1], - seedBytes[2], - seedBytes[3], - seedBytes[4], - seedBytes[5], - ]; - } - if (clockseq == null) { - clockseq = _clockseq = ((seedBytes[6] << 8) | seedBytes[7]) & 0x3fff; - } - } - let msecs = options.msecs !== undefined - ? options.msecs - : new Date().getTime(); - - let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; - - const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; - - if (dt < 0 && options.clockseq === undefined) { - clockseq = (clockseq + 1) & 0x3fff; - } - - if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) { - nsecs = 0; - } - - if (nsecs >= 10000) { - throw new Error("Can't create more than 10M uuids/sec"); - } - - _lastMSecs = msecs; - _lastNSecs = nsecs; - _clockseq = clockseq; - - msecs += 12219292800000; - - const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000; - b[i++] = (tl >>> 24) & 0xff; - b[i++] = (tl >>> 16) & 0xff; - b[i++] = (tl >>> 8) & 0xff; - b[i++] = tl & 0xff; - - const tmh = ((msecs / 0x100000000) * 10000) & 0xfffffff; - b[i++] = (tmh >>> 8) & 0xff; - b[i++] = tmh & 0xff; - - b[i++] = ((tmh >>> 24) & 0xf) | 0x10; - b[i++] = (tmh >>> 16) & 0xff; - - b[i++] = (clockseq >>> 8) | 0x80; - - b[i++] = clockseq & 0xff; - - for (let n = 0; n < 6; ++n) { - b[i + n] = node[n]; - } - - return buf ? buf : bytesToUuid(b); -} |