axel-js/bin/index.js

A lightweight download accelerator. Similar to axel.

#!/usr/bin/env node

'use strict';

var optParser = new(require('option-parser'))();
var axel = require('../lib/axel');
var constants = require('../lib/constants');
var fmt = require('../lib/fmt');

var options = {
        numConnections: constants.DEFAULT_NUM_CONNECTIONS,
        verbose: false,
        quiet: false,
        output: null,
        header: []
    },
    link;

optParser.addOption('n', 'num-connections', 'Specify maximum number of connections').argument('<NUM-CONNECTION>').action((value) => {
    if (!isNaN(value)) {
        options.numConnections = parseInt(value);
    }
});
optParser.addOption('o', 'output', 'Specify local output file').argument('<OUTPUT>').action((value) => {
    options.output = value;
});
optParser.addOption('H', 'header', 'Add header string').argument('<HEADER>').action((value) => {
    options.header.push(value);
});
optParser.addOption('U', 'user-agent', 'Set user agent').argument('<USER-AGENT>').action((value) => {
    options.header.push('User-Agent:' + value);
});
optParser.addOption('v', 'verbose', 'More status information').action(() => {
    options.verbose = true;
});
optParser.addOption('q', 'quiet', ' No output to stdout').action(() => {
    options.quiet = true;
});
optParser.addOption('h', 'help', 'Display this help message').action(optParser.helpAction('[options] url'));
optParser.addOption('V', 'version', 'Version information').action(() => {
    console.log('axel-js version ' + constants.VERSION + ' (' + process.platform + ')');
    process.exit(0);
});

link = optParser.parse();
if (link.length == 0) {
    optParser.helpAction('[options] url')();
}

axel.download(link[0], options).then((data) => {
    console.log(data)
    fmt.printMessage('%s download finished!', link[0]);
}).catch((error) => {
    console.log(error);
    // fmt.printMessage('%s', error.toString());
});