Alex Gleason
52 lines
1.5 KiB
TypeScript
52 lines
1.5 KiB
TypeScript
import { unzipSync } from 'fflate';
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import { parse as parseTOML } from 'smol-toml';
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/** Metadata extracted from a webxdc `.xdc` ZIP archive. */
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export interface WebxdcMeta {
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/** App name from manifest.toml, or undefined if missing. */
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name?: string;
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/** Icon as a File ready for upload, or undefined if missing. */
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iconFile?: File;
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}
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/**
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* Extract the name and icon from a `.xdc` (ZIP) file.
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*
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* - Reads `manifest.toml` for the `name` field.
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* - Reads `icon.png` or `icon.jpg` and returns it as a `File`.
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*/
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export async function extractWebxdcMeta(file: File): Promise<WebxdcMeta> {
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const buf = await file.arrayBuffer();
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const unzipped = unzipSync(new Uint8Array(buf));
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const meta: WebxdcMeta = {};
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// --- Parse manifest.toml for the name ---
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const manifestBytes = unzipped['manifest.toml'];
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if (manifestBytes) {
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const text = new TextDecoder().decode(manifestBytes);
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try {
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const manifest = parseTOML(text);
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if (typeof manifest.name === 'string') {
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meta.name = manifest.name;
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}
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} catch {
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// Silently ignore malformed TOML
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}
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}
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// --- Extract icon (prefer png, fall back to jpg) ---
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const iconPng = unzipped['icon.png'];
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const iconJpg = unzipped['icon.jpg'];
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const iconBytes = iconPng ?? iconJpg;
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if (iconBytes && iconBytes.length > 0) {
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const isPng = !!iconPng;
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const mime = isPng ? 'image/png' : 'image/jpeg';
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const ext = isPng ? '.png' : '.jpg';
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meta.iconFile = new File([iconBytes], `icon${ext}`, { type: mime });
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}
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return meta;
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}
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