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import { existsSync, readFile, writeFile } from 'fs';
import { resolve } from 'path';
import { get } from 'https';
import { suite } from 'uvu';
import { performance } from 'perf_hooks';
import { Worker } from 'worker_threads';
const testFiles = {
basic: Buffer.from('Hello world!'),
text: 'https://www.gutenberg.org/files/2701/old/moby10b.txt',
smallImage: 'https://hlevkin.com/hlevkin/TestImages/new/Rainier.bmp',
image: 'https://www.hlevkin.com/hlevkin/TestImages/new/Maltese.bmp',
largeImage: 'https://www.hlevkin.com/hlevkin/TestImages/new/Sunrise.bmp'
};
const testZipFiles = {
model3D: 'https://raw.githubusercontent.com/mrdoob/three.js/dev/examples/models/kmz/Box.kmz',
largeModel3D: 'https://raw.githubusercontent.com/mrdoob/three.js/dev/examples/models/3mf/truck.3mf'
};
const dlCached = async <T extends Record<string, string | Buffer>>(files: T) => {
let res = {} as Record<keyof T, Buffer>;
for (const name in files) {
let data: string | Buffer = files[name];
if (typeof data == 'string') {
const fn = resolve(__dirname, 'data', name);
if (!existsSync(fn)) {
console.log('\nDownloading ' + data + '...');
data = await new Promise((r, re) => get(data as string, res => {
const len = +res.headers['content-length'];
const buf = Buffer.allocUnsafe(len);
let i = 0;
res.on('data', chunk => {
buf.set(chunk, i);
console.log((100 * (i += chunk.length) / len).toFixed(1) + '%\x1B[1A');
});
res.on('error', re);
res.on('end', () => {
console.log('Complete');
writeFile(fn, buf, () => r(buf));
});
}));
} else {
data = await new Promise((res, rej) =>
readFile(fn, (err, buf) => err ? rej(err) : res(buf))
);
}
}
res[name as keyof T] = data as Buffer;
}
return res;
}
const testFilesPromise = dlCached(testFiles);
const testZipFilesPromise = dlCached(testZipFiles);
export type TestHandler = (file: Buffer, name: string, resetTimer: () => void) => unknown | Promise<unknown>;
export const testSuites = async <T extends Record<string, TestHandler>, D extends 'zip' | 'default' = 'default'>(suites: T, type?: D) => {
type DK = keyof (D extends 'zip' ? typeof testZipFiles : typeof testFiles);
const tf = type == 'zip' ? testZipFiles : testFiles;
const tfp = type == 'zip' ? testZipFilesPromise : testFilesPromise;
const perf = {} as Record<keyof T, Promise<Record<DK, number>>>;
for (const k in suites) {
perf[k] = new Promise(async setPerf => {
const ste = suite(k);
let localTestFiles: Record<DK, Buffer>;
ste.before(async () => {
localTestFiles = (await tfp) as unknown as Record<DK, Buffer>;
});
const localPerf = {} as Record<DK, number>;
for (const name in tf) {
ste(name, async () => {
let ts = performance.now();
await suites[k](localTestFiles[name], name, () => {
ts = performance.now();
});
localPerf[name] = performance.now() - ts;
});
}
ste.after(() => {
setPerf(localPerf);
});
ste.run();
})
}
const resolvedPerf = {} as Record<keyof T, Record<DK, number>>;
for (const k in suites) resolvedPerf[k] = await perf[k];
return resolvedPerf;
};
export const stream = (src: Uint8Array, dst: {
push(dat: Uint8Array, final: boolean): void;
}) => {
for (let i = 0; i < src.length;) {
const off = Math.floor(Math.random() * Math.min(131072, src.length >>> 3));
dst.push(src.slice(i, i + off), (i += off) >= src.length);
}
}
// create worker string
const cws = (pkg: string, method: string = '_cjsDefault') => `
const ${method == '_cjsDefault' ? method : `{ ${method} }`} = require('${pkg}');
const { Worker, workerData, parentPort } = require('worker_threads');
try {
const buf = ${method}(...(Array.isArray(workerData) ? workerData : [workerData]));
parentPort.postMessage(buf, [buf.buffer]);
} catch (err) {
parentPort.postMessage({ err });
}
`;
export type Workerized = (workerData: Uint8Array | [Uint8Array, {}], transferable?: ArrayBuffer[]) => WorkerizedResult;
export interface WorkerizedResult extends PromiseLike<Uint8Array> {
timeout(ms: number): void;
};
// Worker creator
const wc = (pkg: string, method?: string): Workerized => {
const str = cws(pkg, method);
return (workerData, transferable) => {
const worker = new Worker(str, {
eval: true,
workerData,
transferList: transferable
});
let terminated = false;
return {
timeout(ms: number) {
const tm = setTimeout(() => {
worker.terminate();
terminated = true;
}, ms);
worker.once('message', () => clearTimeout(tm));
},
then(res, rej) {
return new Promise((res, rej) => {
worker
.once('message', msg => {
if (msg.err) rej(msg.err);
res(msg);
})
.once('error', rej)
.once('exit', code => {
if (terminated) rej(new Error('Timed out'));
else if (code !== 0) rej(new Error('Exited with status code ' + code));
});
}).then(res, rej);
}
};
}
}
const fflate = resolve(__dirname, '..');
export const workers = {
fflate: {
deflate: wc(fflate, 'deflateSync'),
inflate: wc(fflate, 'inflateSync'),
gzip: wc(fflate, 'gzipSync'),
gunzip: wc(fflate, 'gunzipSync'),
zlib: wc(fflate, 'zlibSync'),
unzlib: wc(fflate, 'unzlibSync'),
zip: wc(fflate, 'zipSync'),
unzip: wc(fflate, 'unzipSync')
},
pako: {
deflate: wc('pako', 'deflateRaw'),
inflate: wc('pako', 'inflateRaw'),
gzip: wc('pako', 'gzip'),
gunzip: wc('pako', 'ungzip'),
zlib: wc('pako', 'deflate'),
unzlib: wc('pako', 'inflate')
},
uzip: {
deflate: wc('uzip', 'deflateRaw'),
inflate: wc('uzip', 'inflateRaw')
},
tinyInflate: {
inflate: wc('tiny-inflate')
},
zlib: {
deflate: wc('zlib', 'deflateRawSync'),
inflate: wc('zlib', 'inflateRawSync'),
gzip: wc('zlib', 'gzipSync'),
gunzip: wc('zlib', 'gunzipSync'),
zlib: wc('zlib', 'deflateSync'),
unzlib: wc('zlib', 'inflateSync')
}
};
export const bClone = (buf: Buffer) => {
const clone = Buffer.allocUnsafe(buf.length);
clone.set(buf);
return clone;
}
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