Sucukdeluxe
76a228fb7c
Redesign the desktop workspace with task sidebars, live filters, clearer settings, and an accessible update dialog. Harden encrypted backup imports, configuration persistence, history retention, queue snapshots, shutdown recovery, and update installation ordering. Publish verified Windows artifacts and refreshed English documentation.
78 lines
3.7 KiB
JavaScript
78 lines
3.7 KiB
JavaScript
const fs = require('fs');
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const SIGNATURES = [
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{ kind: 'mp4-iso', test: (b) => b.length >= 12 && b.slice(4, 8).toString('ascii') === 'ftyp' },
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{ kind: 'matroska', test: (b) => b.length >= 4 && b[0] === 0x1A && b[1] === 0x45 && b[2] === 0xDF && b[3] === 0xA3 },
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{ kind: 'avi', test: (b) => b.length >= 12 && b.slice(0, 4).toString('ascii') === 'RIFF' && b.slice(8, 12).toString('ascii') === 'AVI ' },
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{ kind: 'wav', test: (b) => b.length >= 12 && b.slice(0, 4).toString('ascii') === 'RIFF' && b.slice(8, 12).toString('ascii') === 'WAVE' },
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{ kind: 'flv', test: (b) => b.length >= 3 && b.slice(0, 3).toString('ascii') === 'FLV' },
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{ kind: 'asf-wmv', test: (b) => b.length >= 4 && b[0] === 0x30 && b[1] === 0x26 && b[2] === 0xB2 && b[3] === 0x75 },
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{ kind: 'mpeg-ps', test: (b) => b.length >= 4 && b[0] === 0x00 && b[1] === 0x00 && b[2] === 0x01 && (b[3] === 0xBA || b[3] === 0xB3) },
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{ kind: 'gif', test: (b) => b.length >= 6 && (b.slice(0, 6).toString('ascii') === 'GIF87a' || b.slice(0, 6).toString('ascii') === 'GIF89a') },
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// TS demands the 0x47 sync byte every 188 bytes — a single leading 0x47
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// matches every GIF and every text file starting with "G", so require
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// three consecutive packet boundaries before classifying as video.
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{ kind: 'mpeg-ts', test: (b) => b.length >= 377 && b[0] === 0x47 && b[188] === 0x47 && b[376] === 0x47 },
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{ kind: 'mp3', test: (b) => b.length >= 3 && (b.slice(0, 3).toString('ascii') === 'ID3' || (b[0] === 0xFF && (b[1] & 0xE0) === 0xE0)) },
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{ kind: 'ogg', test: (b) => b.length >= 4 && b.slice(0, 4).toString('ascii') === 'OggS' },
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{ kind: 'jpeg', test: (b) => b.length >= 3 && b[0] === 0xFF && b[1] === 0xD8 && b[2] === 0xFF },
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{ kind: 'png', test: (b) => b.length >= 8 && b[0] === 0x89 && b.slice(1, 4).toString('ascii') === 'PNG' },
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{ kind: 'pdf', test: (b) => b.length >= 5 && b.slice(0, 5).toString('ascii') === '%PDF-' },
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{ kind: 'zip', test: (b) => b.length >= 4 && b[0] === 0x50 && b[1] === 0x4B && (b[2] === 0x03 || b[2] === 0x05 || b[2] === 0x07) },
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{ kind: 'html', test: (b) => {
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const s = b.toString('ascii', 0, Math.min(b.length, 64)).trimStart().toLowerCase();
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return s.startsWith('<!doctype html') || s.startsWith('<html');
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} }
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];
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const VIDEO_KINDS = new Set(['mp4-iso', 'matroska', 'avi', 'flv', 'asf-wmv', 'mpeg-ps', 'mpeg-ts']);
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function detectKind(buf) {
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if (!buf || buf.length === 0) return 'empty';
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for (const sig of SIGNATURES) {
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try { if (sig.test(buf)) return sig.kind; } catch { /* ignore malformed buffer slice */ }
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}
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return 'unknown';
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}
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function isVideoLikeKind(kind) {
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return VIDEO_KINDS.has(kind);
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}
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function probeFileHead(filePath, bytes) {
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const want = Number.isFinite(bytes) && bytes > 0 ? bytes : 64;
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return new Promise((resolve) => {
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fs.open(filePath, 'r', (err, fd) => {
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if (err) return resolve({ ok: false, error: err.message, kind: 'unreadable' });
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const buf = Buffer.alloc(want);
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fs.read(fd, buf, 0, want, 0, (rerr, bytesRead) => {
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fs.close(fd, () => {});
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if (rerr) return resolve({ ok: false, error: rerr.message, kind: 'unreadable' });
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const slice = buf.slice(0, bytesRead);
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resolve({
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ok: true,
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bytesRead,
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kind: detectKind(slice),
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isVideoLike: isVideoLikeKind(detectKind(slice)),
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headHex: slice.toString('hex')
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});
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});
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});
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});
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}
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function summarizeFileStat(filePath) {
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try {
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const st = fs.statSync(filePath);
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return {
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size: st.size,
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mtime: st.mtime.toISOString(),
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isFile: st.isFile()
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};
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} catch (err) {
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return { error: err.message };
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}
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}
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module.exports = { detectKind, isVideoLikeKind, probeFileHead, summarizeFileStat, VIDEO_KINDS, SIGNATURES };
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