b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
40 lines
1.6 KiB
JavaScript
40 lines
1.6 KiB
JavaScript
// Android's extension storage/RPC is JSON. Preserve binary Gaia settings across
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// both boundaries and reconstruct Blobs in the application's own JS realm.
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(() => {
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const marker = '__vulpesBlobV1';
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async function encode(value) {
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if (value instanceof Blob) {
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if (value.size > 16 * 1024 * 1024) throw new Error('SETTING_BLOB_TOO_LARGE');
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const bytes = new Uint8Array(await value.arrayBuffer());
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const chunks = [];
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for (let i = 0; i < bytes.length; i += 16384) {
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chunks.push(String.fromCharCode(...bytes.subarray(i, i + 16384)));
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}
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return { [marker]: true, type: value.type, base64: btoa(chunks.join('')) };
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}
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if (Array.isArray(value)) return Promise.all(value.map(encode));
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if (value && typeof value === 'object') {
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return Object.fromEntries(
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await Promise.all(
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Object.entries(value).map(async ([key, item]) => [key, await encode(item)]),
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),
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);
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}
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return value;
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}
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function decode(value) {
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if (!value || typeof value !== 'object') return value;
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if (
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value[marker] === true &&
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typeof value.type === 'string' &&
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typeof value.base64 === 'string' &&
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Object.keys(value).length === 3
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) {
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const bytes = Uint8Array.from(atob(value.base64), (c) => c.charCodeAt(0));
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return new Blob([bytes], { type: value.type });
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}
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if (Array.isArray(value)) return value.map(decode);
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return Object.fromEntries(Object.entries(value).map(([key, item]) => [key, decode(item)]));
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}
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window.VulpesAndroidSettingsCodec = Object.freeze({ encode, decode });
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})();
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