Serve pull request .diff files

integrations/pull_create_test.go

@@ -39,8 +39,6 @@ func testPullCreate(t *testing.T, session *TestSession, user, repo, branch strin
 })
 resp = session.MakeRequest(t, req, http.StatusFound)
 
-//TODO check the redirected URL
-
 return resp
 }
 
@@ -49,5 +47,16 @@ func TestPullCreate(t *testing.T) {
 session := loginUser(t, "user1")
 testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
 testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
-testPullCreate(t, session, "user1", "repo1", "master")
+resp := testPullCreate(t, session, "user1", "repo1", "master")
+
+// check the redirected URL
+url := resp.HeaderMap.Get("Location")
+assert.Regexp(t, "^/user2/repo1/pulls/[0-9]*$", url)
+
+// check .diff can be accessed and matches performed change
+req := NewRequest(t, "GET", url+".diff")
+resp = session.MakeRequest(t, req, http.StatusOK)
+assert.Regexp(t, "\\+Hello, World \\(Edited\\)", resp.Body)
+assert.Regexp(t, "^diff", resp.Body)
+assert.NotRegexp(t, "diff.*diff", resp.Body) // not two diffs, just one
 }

models/repo.go

@@ -570,7 +570,9 @@ func (repo *Repository) GetMirror() (err error) {
 return err
 }
 
-// GetBaseRepo returns the base repository
+// GetBaseRepo populates repo.BaseRepo for a fork repository and
+// returns an error on failure (NOTE: no error is returned for
+// non-fork repositories, and BaseRepo will be left untouched)
 func (repo *Repository) GetBaseRepo() (err error) {
 if !repo.IsFork {
 return nil

routers/repo/pull.go

@@ -1,4 +1,6 @@
-// Copyright 2014 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors.
+// Copyright 2014 The Gogs Authors.
+// All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -991,3 +993,37 @@ func CleanUpPullRequest(ctx *context.Context) {
 
 ctx.Flash.Success(ctx.Tr("repo.branch.deletion_success", fullBranchName))
 }
+
+// DownloadPullDiff render a pull's raw diff
+func DownloadPullDiff(ctx *context.Context) {
+issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
+if err != nil {
+if models.IsErrIssueNotExist(err) {
+ctx.Handle(404, "GetIssueByIndex", err)
+} else {
+ctx.Handle(500, "GetIssueByIndex", err)
+}
+return
+}
+
+// Redirect elsewhere if it's not a pull request
+if !issue.IsPull {
+ctx.Handle(404, "DownloadPullDiff",
+fmt.Errorf("Issue is not a pull request"))
+return
+}
+
+pr := issue.PullRequest
+
+if err = pr.GetBaseRepo(); err != nil {
+ctx.Handle(500, "GetBaseRepo", err)
+return
+}
+patch, err := pr.BaseRepo.PatchPath(pr.Index)
+if err != nil {
+ctx.Handle(500, "PatchPath", err)
+return
+}
+
+ctx.ServeFileContent(patch)
+}

routers/routes/routes.go

@@ -624,6 +624,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 }, repo.MustBeNotBare, context.RepoRef(), context.CheckUnit(models.UnitTypeCode))
 
 m.Group("/pulls/:index", func() {
+m.Get(".diff", repo.DownloadPullDiff)
 m.Get("/commits", context.RepoRef(), repo.ViewPullCommits)
 m.Get("/files", context.RepoRef(), repo.SetEditorconfigIfExists, repo.SetDiffViewStyle, repo.ViewPullFiles)
 m.Post("/merge", reqRepoWriter, repo.MergePullRequest)