From 67fdec20726e48ba3a934cb25bb30d47ec4a4f29 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Yaroslav=20De=20La=20Pe=C3=B1a=20Smirnov?= Date: Wed, 29 Nov 2017 11:44:34 +0300 Subject: Initial commit, version 0.5.3 --- node_modules/express/lib/utils.js | 306 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 node_modules/express/lib/utils.js (limited to 'node_modules/express/lib/utils.js') diff --git a/node_modules/express/lib/utils.js b/node_modules/express/lib/utils.js new file mode 100644 index 0000000..bd81ac7 --- /dev/null +++ b/node_modules/express/lib/utils.js @@ -0,0 +1,306 @@ +/*! + * express + * Copyright(c) 2009-2013 TJ Holowaychuk + * Copyright(c) 2014-2015 Douglas Christopher Wilson + * MIT Licensed + */ + +'use strict'; + +/** + * Module dependencies. + * @api private + */ + +var Buffer = require('safe-buffer').Buffer +var contentDisposition = require('content-disposition'); +var contentType = require('content-type'); +var deprecate = require('depd')('express'); +var flatten = require('array-flatten'); +var mime = require('send').mime; +var etag = require('etag'); +var proxyaddr = require('proxy-addr'); +var qs = require('qs'); +var querystring = require('querystring'); + +/** + * Return strong ETag for `body`. + * + * @param {String|Buffer} body + * @param {String} [encoding] + * @return {String} + * @api private + */ + +exports.etag = createETagGenerator({ weak: false }) + +/** + * Return weak ETag for `body`. + * + * @param {String|Buffer} body + * @param {String} [encoding] + * @return {String} + * @api private + */ + +exports.wetag = createETagGenerator({ weak: true }) + +/** + * Check if `path` looks absolute. + * + * @param {String} path + * @return {Boolean} + * @api private + */ + +exports.isAbsolute = function(path){ + if ('/' === path[0]) return true; + if (':' === path[1] && ('\\' === path[2] || '/' === path[2])) return true; // Windows device path + if ('\\\\' === path.substring(0, 2)) return true; // Microsoft Azure absolute path +}; + +/** + * Flatten the given `arr`. + * + * @param {Array} arr + * @return {Array} + * @api private + */ + +exports.flatten = deprecate.function(flatten, + 'utils.flatten: use array-flatten npm module instead'); + +/** + * Normalize the given `type`, for example "html" becomes "text/html". + * + * @param {String} type + * @return {Object} + * @api private + */ + +exports.normalizeType = function(type){ + return ~type.indexOf('/') + ? acceptParams(type) + : { value: mime.lookup(type), params: {} }; +}; + +/** + * Normalize `types`, for example "html" becomes "text/html". + * + * @param {Array} types + * @return {Array} + * @api private + */ + +exports.normalizeTypes = function(types){ + var ret = []; + + for (var i = 0; i < types.length; ++i) { + ret.push(exports.normalizeType(types[i])); + } + + return ret; +}; + +/** + * Generate Content-Disposition header appropriate for the filename. + * non-ascii filenames are urlencoded and a filename* parameter is added + * + * @param {String} filename + * @return {String} + * @api private + */ + +exports.contentDisposition = deprecate.function(contentDisposition, + 'utils.contentDisposition: use content-disposition npm module instead'); + +/** + * Parse accept params `str` returning an + * object with `.value`, `.quality` and `.params`. + * also includes `.originalIndex` for stable sorting + * + * @param {String} str + * @return {Object} + * @api private + */ + +function acceptParams(str, index) { + var parts = str.split(/ *; */); + var ret = { value: parts[0], quality: 1, params: {}, originalIndex: index }; + + for (var i = 1; i < parts.length; ++i) { + var pms = parts[i].split(/ *= */); + if ('q' === pms[0]) { + ret.quality = parseFloat(pms[1]); + } else { + ret.params[pms[0]] = pms[1]; + } + } + + return ret; +} + +/** + * Compile "etag" value to function. + * + * @param {Boolean|String|Function} val + * @return {Function} + * @api private + */ + +exports.compileETag = function(val) { + var fn; + + if (typeof val === 'function') { + return val; + } + + switch (val) { + case true: + fn = exports.wetag; + break; + case false: + break; + case 'strong': + fn = exports.etag; + break; + case 'weak': + fn = exports.wetag; + break; + default: + throw new TypeError('unknown value for etag function: ' + val); + } + + return fn; +} + +/** + * Compile "query parser" value to function. + * + * @param {String|Function} val + * @return {Function} + * @api private + */ + +exports.compileQueryParser = function compileQueryParser(val) { + var fn; + + if (typeof val === 'function') { + return val; + } + + switch (val) { + case true: + fn = querystring.parse; + break; + case false: + fn = newObject; + break; + case 'extended': + fn = parseExtendedQueryString; + break; + case 'simple': + fn = querystring.parse; + break; + default: + throw new TypeError('unknown value for query parser function: ' + val); + } + + return fn; +} + +/** + * Compile "proxy trust" value to function. + * + * @param {Boolean|String|Number|Array|Function} val + * @return {Function} + * @api private + */ + +exports.compileTrust = function(val) { + if (typeof val === 'function') return val; + + if (val === true) { + // Support plain true/false + return function(){ return true }; + } + + if (typeof val === 'number') { + // Support trusting hop count + return function(a, i){ return i < val }; + } + + if (typeof val === 'string') { + // Support comma-separated values + val = val.split(/ *, */); + } + + return proxyaddr.compile(val || []); +} + +/** + * Set the charset in a given Content-Type string. + * + * @param {String} type + * @param {String} charset + * @return {String} + * @api private + */ + +exports.setCharset = function setCharset(type, charset) { + if (!type || !charset) { + return type; + } + + // parse type + var parsed = contentType.parse(type); + + // set charset + parsed.parameters.charset = charset; + + // format type + return contentType.format(parsed); +}; + +/** + * Create an ETag generator function, generating ETags with + * the given options. + * + * @param {object} options + * @return {function} + * @private + */ + +function createETagGenerator (options) { + return function generateETag (body, encoding) { + var buf = !Buffer.isBuffer(body) + ? Buffer.from(body, encoding) + : body + + return etag(buf, options) + } +} + +/** + * Parse an extended query string with qs. + * + * @return {Object} + * @private + */ + +function parseExtendedQueryString(str) { + return qs.parse(str, { + allowPrototypes: true + }); +} + +/** + * Return new empty object. + * + * @return {Object} + * @api private + */ + +function newObject() { + return {}; +} -- cgit v1.2.3