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Diffstat (limited to 'vnfmarket/src/main/webapp/vnfmarket/node_modules/type-is/index.js')
-rw-r--r-- | vnfmarket/src/main/webapp/vnfmarket/node_modules/type-is/index.js | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/vnfmarket/src/main/webapp/vnfmarket/node_modules/type-is/index.js b/vnfmarket/src/main/webapp/vnfmarket/node_modules/type-is/index.js new file mode 100644 index 00000000..4da73011 --- /dev/null +++ b/vnfmarket/src/main/webapp/vnfmarket/node_modules/type-is/index.js @@ -0,0 +1,262 @@ +/*! + * type-is + * Copyright(c) 2014 Jonathan Ong + * Copyright(c) 2014-2015 Douglas Christopher Wilson + * MIT Licensed + */ + +'use strict' + +/** + * Module dependencies. + * @private + */ + +var typer = require('media-typer') +var mime = require('mime-types') + +/** + * Module exports. + * @public + */ + +module.exports = typeofrequest +module.exports.is = typeis +module.exports.hasBody = hasbody +module.exports.normalize = normalize +module.exports.match = mimeMatch + +/** + * Compare a `value` content-type with `types`. + * Each `type` can be an extension like `html`, + * a special shortcut like `multipart` or `urlencoded`, + * or a mime type. + * + * If no types match, `false` is returned. + * Otherwise, the first `type` that matches is returned. + * + * @param {String} value + * @param {Array} types + * @public + */ + +function typeis (value, types_) { + var i + var types = types_ + + // remove parameters and normalize + var val = tryNormalizeType(value) + + // no type or invalid + if (!val) { + return false + } + + // support flattened arguments + if (types && !Array.isArray(types)) { + types = new Array(arguments.length - 1) + for (i = 0; i < types.length; i++) { + types[i] = arguments[i + 1] + } + } + + // no types, return the content type + if (!types || !types.length) { + return val + } + + var type + for (i = 0; i < types.length; i++) { + if (mimeMatch(normalize(type = types[i]), val)) { + return type[0] === '+' || type.indexOf('*') !== -1 + ? val + : type + } + } + + // no matches + return false +} + +/** + * Check if a request has a request body. + * A request with a body __must__ either have `transfer-encoding` + * or `content-length` headers set. + * http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.3 + * + * @param {Object} request + * @return {Boolean} + * @public + */ + +function hasbody (req) { + return req.headers['transfer-encoding'] !== undefined || + !isNaN(req.headers['content-length']) +} + +/** + * Check if the incoming request contains the "Content-Type" + * header field, and it contains any of the give mime `type`s. + * If there is no request body, `null` is returned. + * If there is no content type, `false` is returned. + * Otherwise, it returns the first `type` that matches. + * + * Examples: + * + * // With Content-Type: text/html; charset=utf-8 + * this.is('html'); // => 'html' + * this.is('text/html'); // => 'text/html' + * this.is('text/*', 'application/json'); // => 'text/html' + * + * // When Content-Type is application/json + * this.is('json', 'urlencoded'); // => 'json' + * this.is('application/json'); // => 'application/json' + * this.is('html', 'application/*'); // => 'application/json' + * + * this.is('html'); // => false + * + * @param {String|Array} types... + * @return {String|false|null} + * @public + */ + +function typeofrequest (req, types_) { + var types = types_ + + // no body + if (!hasbody(req)) { + return null + } + + // support flattened arguments + if (arguments.length > 2) { + types = new Array(arguments.length - 1) + for (var i = 0; i < types.length; i++) { + types[i] = arguments[i + 1] + } + } + + // request content type + var value = req.headers['content-type'] + + return typeis(value, types) +} + +/** + * Normalize a mime type. + * If it's a shorthand, expand it to a valid mime type. + * + * In general, you probably want: + * + * var type = is(req, ['urlencoded', 'json', 'multipart']); + * + * Then use the appropriate body parsers. + * These three are the most common request body types + * and are thus ensured to work. + * + * @param {String} type + * @private + */ + +function normalize (type) { + if (typeof type !== 'string') { + // invalid type + return false + } + + switch (type) { + case 'urlencoded': + return 'application/x-www-form-urlencoded' + case 'multipart': + return 'multipart/*' + } + + if (type[0] === '+') { + // "+json" -> "*/*+json" expando + return '*/*' + type + } + + return type.indexOf('/') === -1 + ? mime.lookup(type) + : type +} + +/** + * Check if `expected` mime type + * matches `actual` mime type with + * wildcard and +suffix support. + * + * @param {String} expected + * @param {String} actual + * @return {Boolean} + * @private + */ + +function mimeMatch (expected, actual) { + // invalid type + if (expected === false) { + return false + } + + // split types + var actualParts = actual.split('/') + var expectedParts = expected.split('/') + + // invalid format + if (actualParts.length !== 2 || expectedParts.length !== 2) { + return false + } + + // validate type + if (expectedParts[0] !== '*' && expectedParts[0] !== actualParts[0]) { + return false + } + + // validate suffix wildcard + if (expectedParts[1].substr(0, 2) === '*+') { + return expectedParts[1].length <= actualParts[1].length + 1 && + expectedParts[1].substr(1) === actualParts[1].substr(1 - expectedParts[1].length) + } + + // validate subtype + if (expectedParts[1] !== '*' && expectedParts[1] !== actualParts[1]) { + return false + } + + return true +} + +/** + * Normalize a type and remove parameters. + * + * @param {string} value + * @return {string} + * @private + */ + +function normalizeType (value) { + // parse the type + var type = typer.parse(value) + + // remove the parameters + type.parameters = undefined + + // reformat it + return typer.format(type) +} + +/** + * Try to normalize a type and remove parameters. + * + * @param {string} value + * @return {string} + * @private + */ + +function tryNormalizeType (value) { + try { + return normalizeType(value) + } catch (err) { + return null + } +} |