File size: 3,908 Bytes
63c5b6b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | import fs from 'fs';
import path from 'path';
import os from 'os';
import https from 'https';
import yauzl from 'yauzl';
import { fileURLToPath } from 'url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const URL = "https://alphacephei.com/vosk/models/vosk-model-small-en-us-0.15.zip";
const MODEL_DIR = path.resolve(__dirname, "model");
async function main() {
if (!fs.existsSync(MODEL_DIR)) {
fs.mkdirSync(MODEL_DIR, { recursive: true });
}
if (fs.existsSync(path.resolve(MODEL_DIR, "DONE"))) {
console.log("Model already downloaded");
return;
}
const zip = path.resolve(os.tmpdir(), path.basename(URL));
await download(URL, zip);
console.log("Downloaded model to", zip);
await unzip(zip, MODEL_DIR);
fs.unlinkSync(zip);
}
function download(url, to, redirect = 0) {
if (redirect === 0) {
console.log(`Downloading ${url} to ${to}`);
} else {
console.log(`Redirecting to ${url}`);
}
return new Promise((resolve, reject) => {
if (!fs.existsSync(path.dirname(to))) {
fs.mkdirSync(path.dirname(to), { recursive: true });
}
let done = true;
const file = fs.createWriteStream(to);
const request = https.get(url, (res) => {
if (res.statusCode === 302 && res.headers.location !== undefined) {
done = false;
file.close();
resolve(download(res.headers.location, to, redirect + 1));
return;
}
res.pipe(file);
});
file.on("finish", () => {
if (done) {
resolve(to);
}
});
request.on("error", (err) => {
fs.unlink(to, () => reject(err));
});
file.on("error", (err) => {
fs.unlink(to, () => reject(err));
});
request.end();
});
}
function unzip(zip, dest) {
const dir = path.basename(zip, ".zip");
return new Promise((resolve, reject) => {
yauzl.open(zip, { lazyEntries: true }, (err, zipfile) => {
if (err) {
reject(err);
}
zipfile.readEntry();
zipfile
.on("entry", (entry) => {
if (/\/$/.test(entry.fileName)) {
zipfile.readEntry();
} else {
zipfile.openReadStream(entry, (err, stream) => {
if (err) {
reject(err);
}
const f = path.resolve(dest, entry.fileName.replace(`${dir}/`, ""));
if (!fs.existsSync(path.dirname(f))) {
fs.mkdirSync(path.dirname(f), { recursive: true });
console.log("Created directory", path.dirname(f));
}
stream.pipe(fs.createWriteStream(f));
stream
.on("end", () => {
console.log("Extracted", f);
zipfile.readEntry();
})
.on("error", (err) => {
reject(err);
});
});
}
})
.on("error", (err) => {
reject(err);
})
.on("end", () => {
console.log("Extracted all files");
fs.writeFileSync(path.resolve(dest, "DONE"), "");
})
.on("close", () => {
resolve();
});
});
});
}
main().catch(console.error); |