Delegate body parsing to middleware.

Author: RubenVerborgh

lib/handlers/patch.js

@@ -1,5 +1,6 @@
 module.exports = handler
 
+var bodyParser = require('body-parser')
 var mime = require('mime-types')
 var fs = require('fs')
 var debug = require('../debug').handlers
@@ -13,24 +14,19 @@ const PATCHERS = {
   'application/sparql-update': require('./patch/sparql-update-patcher.js')
 }
 
-function handler (req, res, next) {
-  req.setEncoding('utf8')
-  req.text = ''
-  req.on('data', function (chunk) {
-    req.text += chunk
-  })
+const readEntity = bodyParser.text({ type: '*/*' })
 
-  req.on('end', function () {
-    patchHandler(req, res, next)
-  })
+function handler (req, res, next) {
+  readEntity(req, res, () => patchHandler(req, res, next))
 }
 
 function patchHandler (req, res, next) {
-  var ldp = req.app.locals.ldp
+  const patchText = req.body ? req.body.toString() : ''
   debug('PATCH -- ' + req.originalUrl)
-  debug('PATCH -- text length: ' + (req.text ? req.text.length : 'undefined2'))
+  debug('PATCH -- Received patch (%d bytes)', patchText.length)
   res.header('MS-Author-Via', 'SPARQL')
 
+  var ldp = req.app.locals.ldp
   var root = !ldp.idp ? ldp.root : ldp.root + req.hostname + '/'
   var targetFile = utils.uriToFilename(req.path, root)
   var targetContentType = mime.lookup(targetFile) || DEFAULT_CONTENT_TYPE
@@ -50,7 +46,7 @@ function patchHandler (req, res, next) {
   // Read the RDF graph to be patched from the file
   readGraph(targetFile, targetURI, targetContentType)
   // Patch the graph and write it back to the file
-  .then(targetKB => patchGraph(targetKB, targetFile, targetURI, req.text))
+  .then(targetKB => patchGraph(targetKB, targetFile, targetURI, patchText))
   .then(targetKB => writeGraph(targetKB, targetFile, targetURI, targetContentType))
   // Send the result to the client
   .then(result => { res.send(result) })