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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 2x 1x 2x 2x 1x 2x 2x 2x 2x | import fs from "fs";
import path from "path";
import zlib from "zlib";
import fileType from "file-type";
export function copyFileAsync(src: string, dst: string): Promise<any> {
return new Promise((resolve, reject) => {
fs.copyFile(src, dst, (err) => {
Iif (err) reject(err);
resolve();
});
});
}
export function extractGz(src: string, dst: string): Promise<any> {
// check if src file exists
Iif (!fileExists(src)) {
throw new Error(
'Invalid File Doesnt Exist'
);
}
return new Promise((resolve, reject) => {
try {
// prepare streams
var source = fs.createReadStream(src);
var destination = fs.createWriteStream(dst);
// extract the archive
source.pipe(zlib.createGunzip()).pipe(destination);
// callback on extract completion
destination.on('close', resolve);
} catch (err) {
reject(err);
}
});
}
// checks whether a file exists
function fileExists(file: string): boolean {
try {
return fs.statSync(file).isFile();
} catch (err) {
return false;
}
}
export function readFileAsync(file: string): Promise<any> {
return new Promise((resolve, reject) => {
fs.readFile(file, function(err, data) {
Iif (err) reject(err);
resolve(data);
});
});
}
export async function getType(file: string) {
var stream = await fileType.stream(fs.createReadStream(file));
return stream.fileType;
}
export function changeExt(file: string, newExt: string) {
var parsePath = path.parse(file);
parsePath.ext = newExt;
parsePath.base = parsePath.base.substring(0, parsePath.base.lastIndexOf(".")) + newExt;
return path.format(parsePath);
}
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