Add RSS Feeds for branches and files

routers/web/feed/branch.go

@@ -0,0 +1,50 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowBranchFeed shows tags and/or releases on the repo as RSS / Atom feed
+func ShowBranchFeed(ctx *context.Context, repo *repo.Repository, formatType string) {
+	commits, err := ctx.Repo.Commit.CommitsByRange(0, 10)
+	if err != nil {
+		ctx.ServerError("ShowBranchFeed %s", err)
+		return
+	}
+
+	title := fmt.Sprintf("Latest commits for branch %s", strings.TrimSpace(ctx.Repo.BranchName))
+	link := &feeds.Link{Href: repo.HTMLURL() + "/branch/" + ctx.Repo.BranchName}
+
+	feed := &feeds.Feed{
+		Title:       title,
+		Link:        link,
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	for _, commit := range commits {
+		feed.Items = append(feed.Items, &feeds.Item{
+			Id:    commit.ID.String(),
+			Title: strings.TrimSpace(commit.Message()),
+			Link:  &feeds.Link{Href: repo.HTMLURL() + "/commit/" + commit.ID.String()},
+			Author: &feeds.Author{
+				Name:  commit.Author.Name,
+				Email: commit.Author.Email,
+			},
+			Description: commit.Message(),
+			Content:     commit.Message(),
+		})
+	}
+
+	writeFeed(ctx, feed, formatType)
+}

routers/web/feed/file.go

@@ -0,0 +1,54 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowFileFeed shows tags and/or releases on the repo as RSS / Atom feed
+func ShowFileFeed(ctx *context.Context, repo *repo.Repository, formatType string) {
+	fileName := ctx.Repo.TreePath
+	if len(fileName) == 0 {
+		return
+	}
+	commits, err := ctx.Repo.GitRepo.CommitsByFileAndRange(ctx.Repo.RefName, fileName, 1)
+	if err != nil {
+		ctx.ServerError("ShowBranchFeed %s", err)
+		return
+	}
+
+	title := fmt.Sprintf("Latest commits for file %s", strings.TrimSpace(ctx.Repo.TreePath))
+	link := &feeds.Link{Href: repo.HTMLURL() + "/branch/" + ctx.Repo.BranchName}
+
+	feed := &feeds.Feed{
+		Title:       title,
+		Link:        link,
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	for _, commit := range commits {
+		feed.Items = append(feed.Items, &feeds.Item{
+			Id:    commit.ID.String(),
+			Title: strings.TrimSpace(commit.Message()),
+			Link:  &feeds.Link{Href: repo.HTMLURL() + "/commit/" + commit.ID.String()},
+			Author: &feeds.Author{
+				Name:  commit.Author.Name,
+				Email: commit.Author.Email,
+			},
+			Description: commit.Message(),
+			Content:     commit.Message(),
+		})
+	}
+
+	writeFeed(ctx, feed, formatType)
+}

routers/web/feed/render.go

@@ -0,0 +1,64 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+
+	model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/setting"
+)
+
+// RenderBranchFeedRss render rss format for branch feed
+func RenderBranchFeedRss(ctx *context.Context) {
+	render(ctx, "rss")
+}
+
+// RenderBranchFeedAtom render atom format for branch feed
+func RenderBranchFeedAtom(ctx *context.Context) {
+	render(ctx, "atom")
+}
+
+// RenderRepoFeed handles if an RSS feed should be rendered, injects variables into context if not.
+//
+// The logic for rendering as a rss / atom feed checks against:
+// * existence of Accept header containing application/rss+xml or application/atom+xml
+// * support for the {repo}.rss url
+func RenderRepoFeed(ctx *context.Context) bool {
+	if !setting.EnableFeed {
+		return false
+	}
+	isFeed, _, showFeedType := GetFeedType(ctx.Params(":reponame"), ctx.Req)
+	if !isFeed {
+		return false
+	}
+	return render(ctx, showFeedType)
+}
+
+// render
+func render(ctx *context.Context, showFeedType string) bool {
+	var renderer func(ctx *context.Context, repo *model.Repository, formatType string)
+	switch {
+	case ctx.Link == fmt.Sprintf("%s.%s", ctx.Repo.RepoLink, showFeedType):
+		renderer = ShowRepoFeed
+	case ctx.Repo.TreePath == "":
+		renderer = ShowBranchFeed
+	case ctx.Repo.TreePath != "":
+		renderer = ShowFileFeed
+	default:
+		return false
+	}
+	renderer(ctx, ctx.Repo.Repository, showFeedType)
+	return true
+}
+
+// InjectContextVariables adds required context variables to allow feed to be displayed in the UI
+func InjectContextVariables(ctx *context.Context) {
+	if !setting.EnableFeed {
+		return
+	}
+	ctx.Data["EnableFeed"] = true
+	ctx.Data["FeedURL"] = ctx.Repo.Repository.HTMLURL()
+}

routers/web/repo/branch.go

@@ -25,6 +25,7 @@ import (
 	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/utils"
+	"code.gitea.io/gitea/routers/web/feed"
 	"code.gitea.io/gitea/services/forms"
 	release_service "code.gitea.io/gitea/services/release"
 	repo_service "code.gitea.io/gitea/services/repository"
@@ -340,6 +341,11 @@ func getDeletedBranches(ctx *context.Context) ([]*Branch, error) {
 	return branches, nil
 }
 
+// BranchFeedRSS get feeds for tags in RSS format
+func BranchFeedRSS(ctx *context.Context) {
+	feed.ShowBranchFeed(ctx, ctx.Repo.Repository, "rss")
+}
+
 // CreateBranch creates new branch in repository
 func CreateBranch(ctx *context.Context) {
 	form := web.GetForm(ctx).(*forms.NewBranchForm)

routers/web/repo/view.go

@@ -698,17 +698,11 @@ func checkCitationFile(ctx *context.Context, entry *git.TreeEntry) {
 
 // Home render repository home page
 func Home(ctx *context.Context) {
-	if setting.EnableFeed {
-		isFeed, _, showFeedType := feed.GetFeedType(ctx.Params(":reponame"), ctx.Req)
-		if isFeed {
-			feed.ShowRepoFeed(ctx, ctx.Repo.Repository, showFeedType)
-			return
-		}
-
-		ctx.Data["EnableFeed"] = true
-		ctx.Data["FeedURL"] = ctx.Repo.Repository.Link()
+	if feed.RenderRepoFeed(ctx) {
+		return
 	}
 
+	feed.InjectContextVariables(ctx)
 	checkHomeCodeViewable(ctx)
 	if ctx.Written() {
 		return

routers/web/web.go

@@ -1416,6 +1416,9 @@ func RegisterRoutes(m *web.Route) {
 			m.Get("/cherry-pick/{sha:([a-f0-9]{7,40})$}", repo.SetEditorconfigIfExists, repo.CherryPick)
 		}, repo.MustBeNotEmpty, context.RepoRef(), reqRepoCodeReader)
 
+		m.Get("/rss/branch/*", context.RepoRefByType(context.RepoRefBranch), feed.RenderBranchFeedRss)
+		m.Get("/atom/branch/*", context.RepoRefByType(context.RepoRefBranch), feed.RenderBranchFeedAtom)
+
 		m.Group("/src", func() {
 			m.Get("/branch/*", context.RepoRefByType(context.RepoRefBranch), repo.Home)
 			m.Get("/tag/*", context.RepoRefByType(context.RepoRefTag), repo.Home)