mirror of
https://github.com/bower/bower.git
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b544425667
at command level, attach the `shorthand` Hash to the completion function. The completion command will then try to complete shorthands and longer flag based on user input. completing after just one `-` will complete the list of short flags. completing after just two `--` will complete the list of longer flags.
122 lines
3.3 KiB
JavaScript
122 lines
3.3 KiB
JavaScript
// ==========================================
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// BOWER: Link API
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// ==========================================
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// Copyright 2012 Twitter, Inc
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// Licensed under The MIT License
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// http://opensource.org/licenses/MIT
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// ==========================================
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var Emitter = require('events').EventEmitter;
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var nopt = require('nopt');
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var fs = require('fs');
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var path = require('path');
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var mkdirp = require('mkdirp');
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var rimraf = require('rimraf');
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var Manager = require('../core/manager');
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var help = require('./help');
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var template = require('../util/template');
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var config = require('../core/config');
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var isRepo = require('../util/is-repo');
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var optionTypes = { help: Boolean };
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var shorthand = { 'h': ['--help'] };
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function linkSelf(emitter) {
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var manager = new Manager;
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manager
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.on('error', emitter.emit.bind('error'))
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.once('loadJSON', function () {
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var destPath = path.join(config.links, manager.name);
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var srcPath = process.cwd();
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deleteLink(destPath, function (err) {
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if (err) return emitter.emit('error', err);
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createLink(srcPath, destPath, function (err) {
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if (err) return emitter.emit('error', err);
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template('link', { src: srcPath, dest: destPath })
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.on('data', emitter.emit.bind(emitter, 'end'));
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});
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});
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}).loadJSON();
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}
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function linkTo(name, emitter) {
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var destPath = path.join(process.cwd(), config.directory, name);
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var srcPath = path.join(config.links, name);
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deleteLink(destPath, function (err) {
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if (err) return emitter.emit('error', err);
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createLink(srcPath, destPath, function (err) {
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if (err) return emitter.emit('error', err);
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template('link', { src: srcPath, dest: destPath })
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.on('data', emitter.emit.bind(emitter, 'end'));
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});
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});
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}
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function deleteLink(dest, callback) {
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// Delete symlink if already present
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// Beware that if the target is a git repo, we can't proceed
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isRepo(dest, function (is) {
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if (is) return callback(new Error(dest + ' is a local repository, please remove it manually'));
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fs.lstat(dest, function (err) {
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if (!err || err.code !== 'ENOENT') rimraf(dest, callback);
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else callback();
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});
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});
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}
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function createLink(src, dest, callback) {
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var destDir = path.dirname(dest);
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// Create directory
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mkdirp(destDir, function (err) {
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if (err) return callback(err);
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fs.lstat(src, function (err) {
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if (err && err.code === 'ENOENT') {
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return callback(new Error('Attempting to link an unknown package: ' + path.basename(src)));
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}
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// Create symlink
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fs.symlink(src, dest, 'dir', function (err) {
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callback(err);
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});
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});
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});
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}
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module.exports = function (name) {
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var emitter = new Emitter;
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if (!name) linkSelf(emitter);
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else linkTo(name, emitter);
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return emitter;
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};
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module.exports.line = function (argv) {
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var options = nopt(optionTypes, shorthand, argv);
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var name = options.argv.remain[1];
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if (options.help) return help('link');
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return module.exports(name);
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};
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module.exports.completion = function (opts, cb) {
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fs.readdir(config.links, function (err, dirs) {
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// ignore ENOENT, ~/.bower/links not created yet
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if (err && err.code === 'ENOENT') return cb(null, []);
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cb(err, dirs);
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});
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};
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module.exports.completion.options = shorthand;
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