node-pkware/dist/bin/explode.js

nodejs implementation of StormLib's pkware compressor/de-compressor

#!/usr/bin/env -S node --enable-source-maps
import process from 'node:process';
import minimist from 'minimist-lite';
import { getPackageVersion, parseNumberString, getInputStream, getOutputStream } from './helpers.js';
import { transformEmpty, transformIdentity, transformSplitBy, splitAt, through, } from '../stream.js';
import { explode } from '../index.js';
const args = minimist(process.argv.slice(2), {
    string: ['output', 'offset'],
    boolean: ['version', 'drop-before-offset', 'verbose'],
    alias: {
        v: 'version',
    },
});
async function decompress(input, output, offset, keepHeader, config) {
    let leftHandler;
    if (keepHeader) {
        leftHandler = transformIdentity();
    }
    else {
        leftHandler = transformEmpty();
    }
    const rightHandler = explode(config);
    const handler = transformSplitBy(splitAt(offset), leftHandler, rightHandler);
    return new Promise((resolve, reject) => {
        input.pipe(through(handler).on('error', reject)).pipe(output).on('finish', resolve).on('error', reject);
    });
}
if (args.version) {
    const version = await getPackageVersion();
    console.log(`node-pkware - version ${version}`);
    process.exit(0);
}
let input;
let output;
try {
    input = await getInputStream(args._[0]);
    output = await getOutputStream(args.output);
}
catch (error) {
    console.error('error:', error.message);
    process.exit(1);
}
const offset = parseNumberString(args.offset, 0);
const keepHeader = !args['drop-before-offset'];
const config = {
    verbose: args.verbose,
};
try {
    await decompress(input, output, offset, keepHeader, config);
    process.exit(0);
}
catch (error) {
    console.error('error:', error.message);
    process.exit(1);
}
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