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Diffstat (limited to 'dgbuilder/dgeflows/node_modules/body-parser/lib/types/json.js')
-rw-r--r-- | dgbuilder/dgeflows/node_modules/body-parser/lib/types/json.js | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/dgbuilder/dgeflows/node_modules/body-parser/lib/types/json.js b/dgbuilder/dgeflows/node_modules/body-parser/lib/types/json.js new file mode 100644 index 00000000..b66e309b --- /dev/null +++ b/dgbuilder/dgeflows/node_modules/body-parser/lib/types/json.js @@ -0,0 +1,117 @@ +/*! + * body-parser + * Copyright(c) 2014 Jonathan Ong + * Copyright(c) 2014 Douglas Christopher Wilson + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var bytes = require('bytes') +var read = require('../read') +var typer = require('media-typer') +var typeis = require('type-is') + +/** + * Module exports. + */ + +module.exports = json + +/** + * RegExp to match the first non-space in a string. + * + * Allowed whitespace is defined in RFC 7159: + * + * ws = *( + * %x20 / ; Space + * %x09 / ; Horizontal tab + * %x0A / ; Line feed or New line + * %x0D ) ; Carriage return + */ + +var firstcharRegExp = /^[\x20\x09\x0a\x0d]*(.)/ + +/** + * Create a middleware to parse JSON bodies. + * + * @param {object} [options] + * @return {function} + * @api public + */ + +function json(options) { + options = options || {} + + var limit = typeof options.limit !== 'number' + ? bytes(options.limit || '100kb') + : options.limit + var inflate = options.inflate !== false + var reviver = options.reviver + var strict = options.strict !== false + var type = options.type || 'json' + var verify = options.verify || false + + if (verify !== false && typeof verify !== 'function') { + throw new TypeError('option verify must be function') + } + + function parse(body) { + if (body.length === 0) { + // special-case empty json body, as it's a common client-side mistake + // TODO: maybe make this configurable or part of "strict" option + return {} + } + + if (strict) { + var first = firstchar(body) + + if (first !== '{' && first !== '[') { + throw new Error('invalid json') + } + } + + return JSON.parse(body, reviver) + } + + return function jsonParser(req, res, next) { + if (req._body) return next() + req.body = req.body || {} + + if (!typeis(req, type)) return next() + + // RFC 7159 sec 8.1 + var charset = (typer.parse(req).parameters.charset || 'utf-8').toLowerCase() + if (charset.substr(0, 4) !== 'utf-') { + var err = new Error('unsupported charset "' + charset.toUpperCase() + '"') + err.charset = charset + err.status = 415 + next(err) + return + } + + // read + read(req, res, next, parse, { + encoding: charset, + inflate: inflate, + limit: limit, + verify: verify + }) + } +} + +/** + * Get the first non-whitespace character in a string. + * + * @param {string} str + * @return {function} + * @api public + */ + + +function firstchar(str) { + var match = firstcharRegExp.exec(str) + return match ? match[1] : '' +} |