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-rw-r--r--src/app/uuid.ts92
1 files changed, 46 insertions, 46 deletions
diff --git a/src/app/uuid.ts b/src/app/uuid.ts
index ae39d4d..bdceefe 100644
--- a/src/app/uuid.ts
+++ b/src/app/uuid.ts
@@ -1,65 +1,65 @@
const HEX = "0123456789abcdef";
function hexChar(n: number): string {
- return HEX.charAt(n & 0xf);
+ return HEX.charAt(n & 0xf);
}
function hexFromBytes(bytes: Uint8Array): string {
- let out = "";
- for (let i = 0; i < bytes.length; i++) {
- const b = bytes[i] as number;
- out += hexChar(b >> 4);
- out += hexChar(b);
- }
- return out;
+ let out = "";
+ for (let i = 0; i < bytes.length; i++) {
+ const b = bytes[i] as number;
+ out += hexChar(b >> 4);
+ out += hexChar(b);
+ }
+ return out;
}
function formatV4(rand: Uint8Array): string {
- const h = hexFromBytes(rand);
- return (
- h.slice(0, 8) +
- "-" +
- h.slice(8, 12) +
- "-4" +
- h.slice(13, 16) +
- "-" +
- ((parseInt(h.slice(16, 18), 16) & 0x3f) | 0x80).toString(16).padStart(2, "0") +
- h.slice(18, 20) +
- "-" +
- h.slice(20, 32)
- );
+ const h = hexFromBytes(rand);
+ return (
+ h.slice(0, 8) +
+ "-" +
+ h.slice(8, 12) +
+ "-4" +
+ h.slice(13, 16) +
+ "-" +
+ ((parseInt(h.slice(16, 18), 16) & 0x3f) | 0x80).toString(16).padStart(2, "0") +
+ h.slice(18, 20) +
+ "-" +
+ h.slice(20, 32)
+ );
}
function uuidFromGetRandomValues(): string {
- const buf = new Uint8Array(16);
- crypto.getRandomValues(buf);
- buf[6] = ((buf[6] as number) & 0x0f) | 0x40;
- buf[8] = ((buf[8] as number) & 0x3f) | 0x80;
- return formatV4(buf);
+ const buf = new Uint8Array(16);
+ crypto.getRandomValues(buf);
+ buf[6] = ((buf[6] as number) & 0x0f) | 0x40;
+ buf[8] = ((buf[8] as number) & 0x3f) | 0x80;
+ return formatV4(buf);
}
function uuidFromMathRandom(): string {
- let s = "";
- for (let i = 0; i < 36; i++) {
- if (i === 8 || i === 13 || i === 18 || i === 23) {
- s += "-";
- } else if (i === 14) {
- s += "4";
- } else if (i === 19) {
- s += hexChar(Math.floor(Math.random() * 4) + 8);
- } else {
- s += hexChar(Math.floor(Math.random() * 16));
- }
- }
- return s;
+ let s = "";
+ for (let i = 0; i < 36; i++) {
+ if (i === 8 || i === 13 || i === 18 || i === 23) {
+ s += "-";
+ } else if (i === 14) {
+ s += "4";
+ } else if (i === 19) {
+ s += hexChar(Math.floor(Math.random() * 4) + 8);
+ } else {
+ s += hexChar(Math.floor(Math.random() * 16));
+ }
+ }
+ return s;
}
export function randomId(): string {
- if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") {
- return crypto.randomUUID();
- }
- if (typeof crypto !== "undefined" && typeof crypto.getRandomValues === "function") {
- return uuidFromGetRandomValues();
- }
- return uuidFromMathRandom();
+ if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") {
+ return crypto.randomUUID();
+ }
+ if (typeof crypto !== "undefined" && typeof crypto.getRandomValues === "function") {
+ return uuidFromGetRandomValues();
+ }
+ return uuidFromMathRandom();
}