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https://github.com/ksyasuda/SubMiner.git
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sudacode
d9fdc7ef6d
- Add backend selection, setup gating, Anki integration, and external host support - Add launcher flags, documentation, packaging, and focused tests - Open on-demand overlay modals on the first attempt
40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
// SPDX-License-Identifier: GPL-3.0-or-later
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// Base64 for media, captured audio and screenshots. Uint8Array.prototype.toBase64
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// and Uint8Array.fromBase64 (Chrome 143+, Firefox 133+) do in about 0.5 ms per
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// megabyte what the String.fromCodePoint/btoa and atob/Uint8Array.from loops
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// take 40–55 ms for, with identical results; both remain as the fallback.
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const CHUNK = 0x8000;
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export function encodeBase64(data, { btoa: toAscii = globalThis.btoa } = {}) {
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const bytes = data instanceof Uint8Array ? data : new Uint8Array(data);
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if (typeof bytes.toBase64 === "function") {
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try {
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return bytes.toBase64();
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} catch {
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// Fall through to the portable path.
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}
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}
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let binary = "";
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for (let offset = 0; offset < bytes.length; offset += CHUNK) {
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binary += String.fromCharCode.apply(null, bytes.subarray(offset, offset + CHUNK));
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}
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return toAscii(binary);
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}
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export function decodeBase64(text, { atob: fromAscii = globalThis.atob } = {}) {
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if (typeof Uint8Array.fromBase64 === "function") {
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try {
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return Uint8Array.fromBase64(text);
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} catch {
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// Let the portable path produce its own result or error.
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}
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}
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const binary = fromAscii(text);
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const bytes = new Uint8Array(binary.length);
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for (let index = 0; index < binary.length; index += 1) {
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bytes[index] = binary.charCodeAt(index);
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}
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return bytes;
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}
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