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playgrounds/sandbox/scripts/hash.js
73 строки
2 KB
dive2tech
feat: improve text/binary file detection in hash.js (#17543)
26 янв 2026, 17:11
Не верифицирован
26 янв 2026, 17:11
c3fcc15
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import fs from 'node:fs'; /** * Detects if a file is text or binary by checking for null bytes * and validating UTF-8 encoding * @param {string} filepath - Path to the file * @returns {boolean} - true if file is text, false if binary */ function is_text_file(filepath) { const buffer = fs.readFileSync(filepath); // Check for null bytes which indicate binary files for (let i = 0; i < buffer.length; i++) { if (buffer[i] === 0) { return false; } } // Validate UTF-8 encoding try { const text = buffer.toString('utf-8'); // Verify round-trip encoding to ensure valid UTF-8 const encoded = Buffer.from(text, 'utf-8'); return buffer.equals(encoded); } catch { return false; } } const files = []; for (const basename of fs.readdirSync('src')) { if (fs.statSync(`src/${basename}`).isDirectory()) continue; const filepath = `src/${basename}`; const text = is_text_file(filepath); files.push({ type: 'file', name: basename, basename, contents: fs.readFileSync(filepath, text ? 'utf-8' : 'base64'), text }); } const payload = JSON.stringify({ name: 'sandbox', files }); async function compress(payload) { const reader = new Blob([payload]) .stream() .pipeThrough(new CompressionStream('gzip')) .getReader(); let buffer = ''; for (;;) { const { done, value } = await reader.read(); if (done) { reader.releaseLock(); return btoa(buffer).replaceAll('+', '-').replaceAll('/', '_'); } else { for (let i = 0; i < value.length; i++) { // decoding as utf-8 will make btoa reject the string buffer += String.fromCharCode(value[i]); } } } } const hash = await compress(payload); console.log(`https://svelte.dev/playground/untitled#${hash}`);