[GITEA] Configurable clone methods

Adds `[repository].DOWNLOAD_OR_CLONE_METHODS` (defaulting to
"download-zip,download-targz,download-bundle,vscode-clone"), which lets
an instance administrator override the additional clone methods
displayed on the repository home view.

This is purely display-only, the clone methods not listed here are still
available, unless disabled elsewhere. They're just not displayed.

Fixes #710.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit 2aadcf4946)

modules/setting/repository.go

@@ -7,6 +7,7 @@ import (
 	"os/exec"
 	"path"
 	"path/filepath"
+	"slices"
 	"strings"
 
 	"code.gitea.io/gitea/modules/log"
@@ -19,6 +20,8 @@ const (
 	RepoCreatingPublic             = "public"
 )
 
+var RecognisedRepositoryDownloadOrCloneMethods = []string{"download-zip", "download-targz", "download-bundle", "vscode-clone", "vscodium-clone", "cite"}
+
 // ItemsPerPage maximum items per page in forks, watchers and stars of a repo
 const ItemsPerPage = 40
 
@@ -43,6 +46,7 @@ var (
 		DisabledRepoUnits                       []string
 		DefaultRepoUnits                        []string
 		DefaultForkRepoUnits                    []string
+		DownloadOrCloneMethods                  []string
 		PrefixArchiveFiles                      bool
 		DisableMigrations                       bool
 		DisableStars                            bool `ini:"DISABLE_STARS"`
@@ -160,6 +164,7 @@ var (
 		DisabledRepoUnits:                       []string{},
 		DefaultRepoUnits:                        []string{},
 		DefaultForkRepoUnits:                    []string{},
+		DownloadOrCloneMethods:                  []string{"download-zip", "download-targz", "download-bundle", "vscode-clone"},
 		PrefixArchiveFiles:                      true,
 		DisableMigrations:                       false,
 		DisableStars:                            false,
@@ -358,4 +363,10 @@ func loadRepositoryFrom(rootCfg ConfigProvider) {
 	if err := loadRepoArchiveFrom(rootCfg); err != nil {
 		log.Fatal("loadRepoArchiveFrom: %v", err)
 	}
+
+	for _, method := range Repository.DownloadOrCloneMethods {
+		if !slices.Contains(RecognisedRepositoryDownloadOrCloneMethods, method) {
+			log.Error("Unrecognised repository download or clone method: %s", method)
+		}
+	}
 }