/node_modules/serve/node_modules/connect/lib/middleware/directory.js
JavaScript | 227 lines | 111 code | 34 blank | 82 comment | 27 complexity | f3d42c67eeeb00b5a0c67af7b6c0850e MD5 | raw file
- /*!
- * Connect - directory
- * Copyright(c) 2011 Sencha Inc.
- * Copyright(c) 2011 TJ Holowaychuk
- * MIT Licensed
- */
- // TODO: icon / style for directories
- // TODO: arrow key navigation
- // TODO: make icons extensible
- /**
- * Module dependencies.
- */
- var fs = require('fs')
- , parse = require('url').parse
- , utils = require('../utils')
- , path = require('path')
- , normalize = path.normalize
- , extname = path.extname
- , join = path.join;
- /*!
- * Icon cache.
- */
- var cache = {};
- /**
- * Directory:
- *
- * Serve directory listings with the given `root` path.
- *
- * Options:
- *
- * - `hidden` display hidden (dot) files. Defaults to false.
- * - `icons` display icons. Defaults to false.
- * - `filter` Apply this filter function to files. Defaults to false.
- *
- * @param {String} root
- * @param {Object} options
- * @return {Function}
- * @api public
- */
- exports = module.exports = function directory(root, options){
- options = options || {};
- // root required
- if (!root) throw new Error('directory() root path required');
- var hidden = options.hidden
- , icons = options.icons
- , filter = options.filter
- , root = normalize(root);
- return function directory(req, res, next) {
- var accept = req.headers.accept || 'text/plain'
- , url = parse(req.url)
- , dir = decodeURIComponent(url.pathname)
- , path = normalize(join(root, dir))
- , originalUrl = parse(req.originalUrl)
- , originalDir = decodeURIComponent(originalUrl.pathname)
- , showUp = path != root && path != root + '/';
- // null byte(s), bad request
- if (~path.indexOf('\0')) return next(utils.error(400));
- // malicious path, forbidden
- if (0 != path.indexOf(root)) return next(utils.error(403));
- // check if we have a directory
- fs.stat(path, function(err, stat){
- if (err) return 'ENOENT' == err.code
- ? next()
- : next(err);
- if (!stat.isDirectory()) return next();
- // fetch files
- fs.readdir(path, function(err, files){
- if (err) return next(err);
- if (!hidden) files = removeHidden(files);
- if (filter) files = files.filter(filter);
- files.sort();
- // content-negotiation
- for (var key in exports) {
- if (~accept.indexOf(key) || ~accept.indexOf('*/*')) {
- exports[key](req, res, files, next, originalDir, showUp, icons);
- return;
- }
- }
- // not acceptable
- next(utils.error(406));
- });
- });
- };
- };
- /**
- * Respond with text/html.
- */
- exports.html = function(req, res, files, next, dir, showUp, icons){
- fs.readFile(__dirname + '/../public/directory.html', 'utf8', function(err, str){
- if (err) return next(err);
- fs.readFile(__dirname + '/../public/style.css', 'utf8', function(err, style){
- if (err) return next(err);
- if (showUp) files.unshift('..');
- str = str
- .replace('{style}', style)
- .replace('{files}', html(files, dir, icons))
- .replace('{directory}', dir)
- .replace('{linked-path}', htmlPath(dir));
- res.setHeader('Content-Type', 'text/html');
- res.setHeader('Content-Length', str.length);
- res.end(str);
- });
- });
- };
- /**
- * Respond with application/json.
- */
- exports.json = function(req, res, files){
- files = JSON.stringify(files);
- res.setHeader('Content-Type', 'application/json');
- res.setHeader('Content-Length', files.length);
- res.end(files);
- };
- /**
- * Respond with text/plain.
- */
- exports.plain = function(req, res, files){
- files = files.join('\n') + '\n';
- res.setHeader('Content-Type', 'text/plain');
- res.setHeader('Content-Length', files.length);
- res.end(files);
- };
- /**
- * Map html `dir`, returning a linked path.
- */
- function htmlPath(dir) {
- var curr = [];
- return dir.split('/').map(function(part){
- curr.push(part);
- return '<a href="' + curr.join('/') + '">' + part + '</a>';
- }).join(' / ');
- }
- /**
- * Map html `files`, returning an html unordered list.
- */
- function html(files, dir, useIcons) {
- return '<ul id="files">' + files.map(function(file){
- var icon = ''
- , classes = [];
- if (useIcons && '..' != file) {
- icon = icons[extname(file)] || icons.default;
- icon = '<img src="data:image/png;base64,' + load(icon) + '" />';
- classes.push('icon');
- }
- return '<li><a href="'
- + join(dir, file)
- + '" class="'
- + classes.join(' ') + '"'
- + ' title="' + file + '">'
- + icon + file + '</a></li>';
- }).join('\n') + '</ul>';
- }
- /**
- * Load and cache the given `icon`.
- *
- * @param {String} icon
- * @return {String}
- * @api private
- */
- function load(icon) {
- if (cache[icon]) return cache[icon];
- return cache[icon] = fs.readFileSync(__dirname + '/../public/icons/' + icon, 'base64');
- }
- /**
- * Filter "hidden" `files`, aka files
- * beginning with a `.`.
- *
- * @param {Array} files
- * @return {Array}
- * @api private
- */
- function removeHidden(files) {
- return files.filter(function(file){
- return '.' != file[0];
- });
- }
- /**
- * Icon map.
- */
- var icons = {
- '.js': 'page_white_code_red.png'
- , '.c': 'page_white_c.png'
- , '.h': 'page_white_h.png'
- , '.cc': 'page_white_cplusplus.png'
- , '.php': 'page_white_php.png'
- , '.rb': 'page_white_ruby.png'
- , '.cpp': 'page_white_cplusplus.png'
- , '.swf': 'page_white_flash.png'
- , '.pdf': 'page_white_acrobat.png'
- , 'default': 'page_white.png'
- };