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// tar -x
import * as fsm from '@isaacs/fs-minipass';
import fs from 'node:fs';
import { filesFilter } from './list.js';
import { makeCommand } from './make-command.js';
import { Unpack, UnpackSync } from './unpack.js';
const extractFileSync = (opt) => {
const u = new UnpackSync(opt);
const file = opt.file;
const stat = fs.statSync(file);
// This trades a zero-byte read() syscall for a stat
// However, it will usually result in less memory allocation
const readSize = opt.maxReadSize || 16 * 1024 * 1024;
const stream = new fsm.ReadStreamSync(file, {
readSize: readSize,
size: stat.size,
});
stream.pipe(u);
};
const extractFile = (opt, _) => {
const u = new Unpack(opt);
const readSize = opt.maxReadSize || 16 * 1024 * 1024;
const file = opt.file;
const p = new Promise((resolve, reject) => {
u.on('error', reject);
u.on('close', resolve);
// This trades a zero-byte read() syscall for a stat
// However, it will usually result in less memory allocation
fs.stat(file, (er, stat) => {
if (er) {
reject(er);
}
else {
const stream = new fsm.ReadStream(file, {
readSize: readSize,
size: stat.size,
});
stream.on('error', reject);
stream.pipe(u);
}
});
});
return p;
};
export const extract = makeCommand(extractFileSync, extractFile, opt => new UnpackSync(opt), opt => new Unpack(opt), (opt, files) => {
if (files?.length)
filesFilter(opt, files);
});
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