| /*! |
| * body-parser |
| * Copyright(c) 2014-2015 Douglas Christopher Wilson |
| * MIT Licensed |
| */ |
| |
| 'use strict' |
| |
| /** |
| * Module dependencies. |
| */ |
| |
| var bytes = require('bytes') |
| var contentType = require('content-type') |
| var debug = require('debug')('body-parser:text') |
| var read = require('../read') |
| var typeis = require('type-is') |
| |
| /** |
| * Module exports. |
| */ |
| |
| module.exports = text |
| |
| /** |
| * Create a middleware to parse text bodies. |
| * |
| * @param {object} [options] |
| * @return {function} |
| * @api public |
| */ |
| |
| function text (options) { |
| var opts = options || {} |
| |
| var defaultCharset = opts.defaultCharset || 'utf-8' |
| var inflate = opts.inflate !== false |
| var limit = typeof opts.limit !== 'number' |
| ? bytes.parse(opts.limit || '100kb') |
| : opts.limit |
| var type = opts.type || 'text/plain' |
| var verify = opts.verify || false |
| |
| if (verify !== false && typeof verify !== 'function') { |
| throw new TypeError('option verify must be function') |
| } |
| |
| // create the appropriate type checking function |
| var shouldParse = typeof type !== 'function' |
| ? typeChecker(type) |
| : type |
| |
| function parse (buf) { |
| return buf |
| } |
| |
| return function textParser (req, res, next) { |
| if (req._body) { |
| debug('body already parsed') |
| next() |
| return |
| } |
| |
| req.body = req.body || {} |
| |
| // skip requests without bodies |
| if (!typeis.hasBody(req)) { |
| debug('skip empty body') |
| next() |
| return |
| } |
| |
| debug('content-type %j', req.headers['content-type']) |
| |
| // determine if request should be parsed |
| if (!shouldParse(req)) { |
| debug('skip parsing') |
| next() |
| return |
| } |
| |
| // get charset |
| var charset = getCharset(req) || defaultCharset |
| |
| // read |
| read(req, res, next, parse, debug, { |
| encoding: charset, |
| inflate: inflate, |
| limit: limit, |
| verify: verify |
| }) |
| } |
| } |
| |
| /** |
| * Get the charset of a request. |
| * |
| * @param {object} req |
| * @api private |
| */ |
| |
| function getCharset (req) { |
| try { |
| return (contentType.parse(req).parameters.charset || '').toLowerCase() |
| } catch (e) { |
| return undefined |
| } |
| } |
| |
| /** |
| * Get the simple type checker. |
| * |
| * @param {string} type |
| * @return {function} |
| */ |
| |
| function typeChecker (type) { |
| return function checkType (req) { |
| return Boolean(typeis(req, type)) |
| } |
| } |