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- /*!
- * 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))
- }
- }
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