koa-xml-body/lib/xml-parser.js

koa middleware to parse xml request body

'use strict'

const parseString = require('xml2js').parseString
const raw = require('raw-body')

module.exports = parse

function convertXml2Json(str, options) {
    return new Promise((resolve, reject) => {
        parseString(str, options, (err, result) => {
            err ? reject(err) : resolve(result)
        })
    })
}

function parse(request, options) {
    options = Object.assign({
        limit: '1mb',
        encoding: 'utf8',
        xmlOptions: {}
    }, options)
    const len = request.headers['content-length']
    if (len) {
        options.length = len
    }
    return raw(request, options)
        .then(str => {
            return convertXml2Json(str, options.xmlOptions).then(jsonData => {
                return {
                    jsonData,
                    rawBody: str
                }
            }).catch(err => {
                err = typeof err === 'string' ? new Error(err) : err
                err.status = 400
                err.body = str
                throw err
            })
        })
}