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'use strict' |
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var bytes = require('bytes') |
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var contentType = require('content-type') |
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var debug = require('debug')('body-parser:text') |
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var read = require('../read') |
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var typeis = require('type-is') |
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module.exports = text |
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function text (options) { |
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var opts = options || {} |
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var defaultCharset = opts.defaultCharset || 'utf-8' |
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var inflate = opts.inflate !== false |
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var limit = typeof opts.limit !== 'number' |
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? bytes.parse(opts.limit || '100kb') |
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: opts.limit |
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var type = opts.type || 'text/plain' |
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var verify = opts.verify || false |
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if (verify !== false && typeof verify !== 'function') { |
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throw new TypeError('option verify must be function') |
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} |
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var shouldParse = typeof type !== 'function' |
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? typeChecker(type) |
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: type |
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function parse (buf) { |
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return buf |
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} |
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return function textParser (req, res, next) { |
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if (req._body) { |
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debug('body already parsed') |
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next() |
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return |
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} |
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req.body = req.body || {} |
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if (!typeis.hasBody(req)) { |
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debug('skip empty body') |
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next() |
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return |
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} |
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debug('content-type %j', req.headers['content-type']) |
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if (!shouldParse(req)) { |
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debug('skip parsing') |
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next() |
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return |
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} |
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var charset = getCharset(req) || defaultCharset |
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read(req, res, next, parse, debug, { |
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encoding: charset, |
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inflate: inflate, |
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limit: limit, |
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verify: verify |
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}) |
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} |
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} |
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function getCharset (req) { |
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try { |
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return (contentType.parse(req).parameters.charset || '').toLowerCase() |
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} catch (e) { |
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return undefined |
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} |
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} |
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function typeChecker (type) { |
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return function checkType (req) { |
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return Boolean(typeis(req, type)) |
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} |
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} |
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