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", ctx.Repo.BranchName)
+	link := &feeds.Link{Href: repo.HTMLURL() + "/" + ctx.Repo.BranchNameSubURL()}
+
+	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(strings.Split(commit.Message(), "\n")[0]),
+			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", ctx.Repo.TreePath)
+	link := &feeds.Link{Href: repo.HTMLURL() + "/" + ctx.Repo.BranchNameSubURL() + "/" + ctx.Repo.TreePath}
+
+	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(strings.Split(commit.Message(), "\n")[0]),
+			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 +1,54 @@
+// 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) {
+	if !setting.EnableFeed {
+		return
+	}
+	isFeed, _, showFeedType := GetFeedType(ctx.Params(":reponame"), ctx.Req)
+	if !isFeed {
+		ctx.Data["EnableFeed"] = true
+		ctx.Data["FeedURL"] = ctx.Repo.Repository.HTMLURL()
+		return
+	}
+	render(ctx, showFeedType)
+}
+
+// render
+func render(ctx *context.Context, showFeedType string) {
+	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
+	}
+	renderer(ctx, ctx.Repo.Repository, showFeedType)
+}

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

@@ -698,15 +698,9 @@ 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()
+	feed.RenderRepoFeed(ctx)
+	if ctx.Written() {
+		return
 	}
 
 	checkHomeCodeViewable(ctx)

routers/web/web.go

@@ -1417,6 +1417,9 @@ 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)

templates/repo/home.tmpl

@@ -94,6 +94,11 @@
 						{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 					</button>
 				{{end}}
+				{{if and .EnableFeed (eq $n 0) (ne .Repository.DefaultBranch $.BranchName)}}
+					<a role="button" class="ui primary compact button" href="{{$.FeedURL}}/rss/{{$.BranchNameSubURL}}">
+						<svg viewBox="0 2 16 16" class="svg octicon-rss" width="18" height="18" aria-hidden="true"><path d="M2.002 2.725a.75.75 0 0 1 .797-.699C8.79 2.42 13.58 7.21 13.974 13.201a.75.75 0 0 1-1.497.098 10.502 10.502 0 0 0-9.776-9.776.747.747 0 0 1-.7-.798ZM2.84 7.05h-.002a7.002 7.002 0 0 1 6.113 6.111.75.75 0 0 1-1.49.178 5.503 5.503 0 0 0-4.8-4.8.75.75 0 0 1 .179-1.489ZM2 13a1 1 0 1 1 2 0 1 1 0 0 1-2 0Z"></path></svg>
+					</a>
+				{{end}}
 				{{if and (eq $n 0) (.Repository.IsTemplate)}}
 					<a role="button" class="ui primary compact button" href="{{AppSubUrl}}/repo/create?template_id={{.Repository.ID}}">
 						{{.locale.Tr "repo.use_template"}}

templates/repo/view_file.tmpl

@@ -24,6 +24,11 @@
 			{{end}}
 			{{if not .ReadmeInList}}
 				<div class="ui buttons gt-mr-2">
+					{{if .EnableFeed}}
+					<a class="ui mini basic button" href="{{$.FeedURL}}/rss/{{$.BranchNameSubURL}}{{range $i, $v := .TreeNames}}/{{$v}}{{end}}">
+						<svg viewBox="0 2 14 14" class="svg octicon-rss" width="12" height="12" aria-hidden="true"><path d="M2.002 2.725a.75.75 0 0 1 .797-.699C8.79 2.42 13.58 7.21 13.974 13.201a.75.75 0 0 1-1.497.098 10.502 10.502 0 0 0-9.776-9.776.747.747 0 0 1-.7-.798ZM2.84 7.05h-.002a7.002 7.002 0 0 1 6.113 6.111.75.75 0 0 1-1.49.178 5.503 5.503 0 0 0-4.8-4.8.75.75 0 0 1 .179-1.489ZM2 13a1 1 0 1 1 2 0 1 1 0 0 1-2 0Z"></path></svg>
+					</a>
+					{{end}}
 					<a class="ui mini basic button" href="{{$.RawFileLink}}">{{.locale.Tr "repo.file_raw"}}</a>
 					{{if not .IsViewCommit}}
 						<a class="ui mini basic button" href="{{.RepoLink}}/src/commit/{{PathEscape .CommitID}}/{{PathEscapeSegments .TreePath}}">{{.locale.Tr "repo.file_permalink"}}</a>