added raw endpoint to docstore

services/docstore/app.coffee

@@ -17,6 +17,7 @@ app.use Metrics.http.monitor(logger)
 
 app.get  '/project/:project_id/doc', HttpController.getAllDocs
 app.get  '/project/:project_id/doc/:doc_id', HttpController.getDoc
+app.get  '/project/:project_id/doc/:doc_id/raw', HttpController.getRawDoc
 app.post '/project/:project_id/doc/:doc_id', bodyParser.json(limit: "2mb"), HttpController.updateDoc
 app.del  '/project/:project_id/doc/:doc_id', HttpController.deleteDoc
 

services/docstore/app/coffee/HttpController.coffee

@@ -13,6 +13,18 @@ module.exports = HttpController =
 			else
 				res.json HttpController._buildDocView(doc)
 
+	getRawDoc: (req, res, next = (error)->)->
+		project_id = req.params.project_id
+		doc_id     = req.params.doc_id
+		logger.log project_id: project_id, doc_id: doc_id, "getting raw doc"
+		DocManager.getDoc project_id, doc_id, (error, doc) ->
+			return next(error) if error?
+			if !doc?
+				res.send 404
+			else
+				res.setHeader('content-type', 'text/plain')
+				res.send HttpController._buildRawDocView(doc)
+
 	getAllDocs: (req, res, next = (error) ->) ->
 		project_id = req.params.project_id
 		logger.log project_id: project_id, "getting all docs"
@@ -57,4 +69,7 @@ module.exports = HttpController =
 			_id:     doc._id.toString()
 			lines:   doc.lines
 			rev:     doc.rev
-		}
+		}
+
+	_buildRawDocView: (doc)->
+		return doc.lines.join("\n")

services/docstore/test/unit/coffee/HttpControllerTests.coffee

@@ -1,4 +1,5 @@
 SandboxedModule = require('sandboxed-module')
+assert = require("chai").assert
 sinon = require('sinon')
 chai = require('chai')
 chai.should()
@@ -11,14 +12,14 @@ describe "HttpController", ->
 		@HttpController = SandboxedModule.require modulePath, requires:
 			"./DocManager": @DocManager = {}
 			"logger-sharelatex": @logger = { log: sinon.stub(), error: sinon.stub() }
-		@res = { send: sinon.stub(), json: sinon.stub() }
+		@res = { send: sinon.stub(), json: sinon.stub(), setHeader:sinon.stub() }
 		@req = {}
 		@next = sinon.stub()
 		@project_id = "mock-project-id"
 		@doc_id = "mock-doc-id"
 		@doc = {
 			_id: @doc_id
-			lines: ["mock", "lines"]
+			lines: ["mock", "lines", " here", "", "", " spaces "]
 			version: 42
 			rev: 5
 		}
@@ -45,6 +46,25 @@ describe "HttpController", ->
 				})
 				.should.equal true
 
+	describe "getRawDoc", ->
+		beforeEach ->
+			@req.params =
+				project_id: @project_id
+				doc_id: @doc_id
+			@DocManager.getDoc = sinon.stub().callsArgWith(2, null, @doc)
+			@HttpController.getRawDoc @req, @res, @next
+
+		it "should get the document", ->
+			@DocManager.getDoc
+				.calledWith(@project_id, @doc_id)
+				.should.equal true
+
+		it "should set the content type header", ->
+			@res.setHeader.calledWith('content-type', 'text/plain').should.equal true
+
+		it "should send the raw version of the doc", ->
+			assert.deepEqual @res.send.args[0][0], "#{@doc.lines[0]}\n#{@doc.lines[1]}\n#{@doc.lines[2]}\n#{@doc.lines[3]}\n#{@doc.lines[4]}\n#{@doc.lines[5]}"
+
 	describe "getAllDocs", ->
 		describe "normally", ->
 			beforeEach ->