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83 lines
2.0 KiB
JavaScript
83 lines
2.0 KiB
JavaScript
6 years ago
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'use strict';
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var path = require('path');
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var minimist = require('minimist');
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var objectAssign = require('object-assign');
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var camelcaseKeys = require('camelcase-keys');
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var decamelize = require('decamelize');
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var mapObj = require('map-obj');
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var trimNewlines = require('trim-newlines');
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var redent = require('redent');
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var readPkgUp = require('read-pkg-up');
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var loudRejection = require('loud-rejection');
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var normalizePackageData = require('normalize-package-data');
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// get the uncached parent
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delete require.cache[__filename];
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var parentDir = path.dirname(module.parent.filename);
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module.exports = function (opts, minimistOpts) {
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loudRejection();
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if (Array.isArray(opts) || typeof opts === 'string') {
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opts = {help: opts};
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}
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opts = objectAssign({
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pkg: readPkgUp.sync({
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cwd: parentDir,
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normalize: false
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}).pkg,
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argv: process.argv.slice(2)
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}, opts);
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minimistOpts = objectAssign({}, minimistOpts);
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minimistOpts.default = mapObj(minimistOpts.default || {}, function (key, value) {
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return [decamelize(key, '-'), value];
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});
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if (Array.isArray(opts.help)) {
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opts.help = opts.help.join('\n');
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}
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var pkg = typeof opts.pkg === 'string' ? require(path.join(parentDir, opts.pkg)) : opts.pkg;
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var argv = minimist(opts.argv, minimistOpts);
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var help = redent(trimNewlines(opts.help || ''), 2);
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normalizePackageData(pkg);
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process.title = pkg.bin ? Object.keys(pkg.bin)[0] : pkg.name;
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var description = opts.description;
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if (!description && description !== false) {
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description = pkg.description;
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}
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help = (description ? '\n ' + description + '\n' : '') + (help ? '\n' + help : '\n');
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var showHelp = function (code) {
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console.log(help);
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process.exit(code || 0);
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};
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if (argv.version && opts.version !== false) {
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console.log(typeof opts.version === 'string' ? opts.version : pkg.version);
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process.exit();
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}
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if (argv.help && opts.help !== false) {
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showHelp();
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}
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var _ = argv._;
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delete argv._;
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return {
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input: _,
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flags: camelcaseKeys(argv),
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pkg: pkg,
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help: help,
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showHelp: showHelp
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};
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};
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