56 lines
1.9 KiB
JavaScript
56 lines
1.9 KiB
JavaScript
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export const unixNow = () => Math.floor(Date.now() / 1000);
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export const newExpirationValue = () => (unixNow() + 60 * 5).toString();
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export function readBlobAsArrayBuffer(file) {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onload = (e) => {
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const result = e.target?.result;
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if (result == undefined || typeof result !== "object") {
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reject();
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return;
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}
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resolve(result);
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};
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reader.onerror = (error) => reject(error);
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reader.readAsArrayBuffer(file);
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});
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}
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export async function getFileSha256(file) {
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const { bytesToHex } = await import("./lib/@noble/hashes/utils.js");
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const buffer = file instanceof File ? await file.arrayBuffer() : await readBlobAsArrayBuffer(file);
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let hash;
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if (crypto.subtle) {
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const hashBuffer = await crypto.subtle.digest("SHA-256", buffer);
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hash = new Uint8Array(hashBuffer);
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} else {
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const { sha256 } = await import("./lib/@noble/hashes/sha256.js");
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hash = sha256.create().update(new Uint8Array(buffer)).digest();
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}
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return bytesToHex(hash);
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}
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// Copied from https://git.v0l.io/Kieran/dtan/src/branch/main/src/const.ts#L220
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export const kiB = Math.pow(1024, 1);
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export const MiB = Math.pow(1024, 2);
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export const GiB = Math.pow(1024, 3);
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export const TiB = Math.pow(1024, 4);
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export const PiB = Math.pow(1024, 5);
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export const EiB = Math.pow(1024, 6);
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export const ZiB = Math.pow(1024, 7);
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export const YiB = Math.pow(1024, 8);
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export function formatBytes(b, f) {
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f ??= 2;
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if (b >= YiB) return (b / YiB).toFixed(f) + " YiB";
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if (b >= ZiB) return (b / ZiB).toFixed(f) + " ZiB";
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if (b >= EiB) return (b / EiB).toFixed(f) + " EiB";
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if (b >= PiB) return (b / PiB).toFixed(f) + " PiB";
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if (b >= TiB) return (b / TiB).toFixed(f) + " TiB";
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if (b >= GiB) return (b / GiB).toFixed(f) + " GiB";
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if (b >= MiB) return (b / MiB).toFixed(f) + " MiB";
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if (b >= kiB) return (b / kiB).toFixed(f) + " KiB";
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return b.toFixed(f) + " B";
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}
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