diff options
Diffstat (limited to 'dgbuilder/dgeflows/node_modules/serve-favicon/index.js')
-rw-r--r-- | dgbuilder/dgeflows/node_modules/serve-favicon/index.js | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/dgbuilder/dgeflows/node_modules/serve-favicon/index.js b/dgbuilder/dgeflows/node_modules/serve-favicon/index.js deleted file mode 100644 index b83e85f4..00000000 --- a/dgbuilder/dgeflows/node_modules/serve-favicon/index.js +++ /dev/null @@ -1,167 +0,0 @@ -/*! - * serve-favicon - * Copyright(c) 2010 Sencha Inc. - * Copyright(c) 2011 TJ Holowaychuk - * Copyright(c) 2014 Douglas Christopher Wilson - * MIT Licensed - */ - -/** - * Module dependencies. - * @private - */ - -var etag = require('etag'); -var fresh = require('fresh'); -var fs = require('fs'); -var ms = require('ms'); -var parseUrl = require('parseurl'); -var path = require('path'); -var resolve = path.resolve; - -/** - * Module variables. - * @private - */ - -var maxMaxAge = 60 * 60 * 24 * 365 * 1000; // 1 year - -/** - * Serves the favicon located by the given `path`. - * - * @public - * @param {String|Buffer} path - * @param {Object} options - * @return {Function} middleware - */ - -module.exports = function favicon(path, options){ - options = options || {}; - - var buf; - var icon; // favicon cache - var maxAge = calcMaxAge(options.maxAge); - var stat; - - if (!path) throw new TypeError('path to favicon.ico is required'); - - if (Buffer.isBuffer(path)) { - buf = new Buffer(path.length); - path.copy(buf); - - icon = createIcon(buf, maxAge); - } else if (typeof path === 'string') { - path = resolve(path); - stat = fs.statSync(path); - if (stat.isDirectory()) throw createIsDirError(path); - } else { - throw new TypeError('path to favicon.ico must be string or buffer'); - } - - return function favicon(req, res, next){ - if (parseUrl(req).pathname !== '/favicon.ico') { - next(); - return; - } - - if ('GET' !== req.method && 'HEAD' !== req.method) { - var status = 'OPTIONS' === req.method ? 200 : 405; - res.writeHead(status, {'Allow': 'GET, HEAD, OPTIONS'}); - res.end(); - return; - } - - if (icon) return send(req, res, icon); - - fs.readFile(path, function(err, buf){ - if (err) return next(err); - icon = createIcon(buf, maxAge); - send(req, res, icon); - }); - }; -}; - -/** - * Calculate the max-age from a configured value. - * - * @private - * @param {string|number} val - * @return {number} - */ - -function calcMaxAge(val) { - var num = typeof val === 'string' - ? ms(val) - : val; - - return num != null - ? Math.min(Math.max(0, num), maxMaxAge) - : maxMaxAge -} - -/** - * Create icon data from Buffer and max-age. - * - * @private - * @param {Buffer} buf - * @param {number} maxAge - * @return {object} - */ - -function createIcon(buf, maxAge) { - return { - body: buf, - headers: { - 'Cache-Control': 'public, max-age=' + ~~(maxAge / 1000), - 'ETag': etag(buf) - } - }; -} - -/** - * Create EISDIR error. - * - * @private - * @param {string} path - * @return {Error} - */ - -function createIsDirError(path) { - var error = new Error('EISDIR, illegal operation on directory \'' + path + '\''); - error.code = 'EISDIR'; - error.errno = 28; - error.path = path; - error.syscall = 'open'; - return error; -} - -/** - * Send icon data in response to a request. - * - * @private - * @param {IncomingMessage} req - * @param {OutgoingMessage} res - * @param {object} icon - */ - -function send(req, res, icon) { - var headers = icon.headers; - - // Set headers - var keys = Object.keys(headers); - for (var i = 0; i < keys.length; i++) { - var key = keys[i]; - res.setHeader(key, headers[key]); - } - - if (fresh(req.headers, res._headers)) { - res.statusCode = 304; - res.end(); - return; - } - - res.statusCode = 200; - res.setHeader('Content-Length', icon.body.length); - res.setHeader('Content-Type', 'image/x-icon'); - res.end(icon.body); -} |