Enable more revive linter rules (#30608)

Noteable additions:

- `redefines-builtin-id` forbid variable names that shadow go builtins
- `empty-lines` remove unnecessary empty lines that `gofumpt` does not
remove for some reason
- `superfluous-else` eliminate more superfluous `else` branches

Rules are also sorted alphabetically and I cleaned up various parts of
`.golangci.yml`.

.golangci.yml

@@ -1,13 +1,14 @@
 linters:
+  enable-all: false
+  disable-all: true
+  fast: false
   enable:
     - bidichk
-    # - deadcode # deprecated - https://github.com/golangci/golangci-lint/issues/1841
     - depguard
     - dupl
     - errcheck
     - forbidigo
     - gocritic
-    # - gocyclo # The cyclomatic complexety of a lot of functions is too high, we should refactor those another time.
     - gofmt
     - gofumpt
     - gosimple
@@ -17,20 +18,18 @@ linters:
     - nolintlint
     - revive
     - staticcheck
-    # - structcheck # deprecated - https://github.com/golangci/golangci-lint/issues/1841
     - stylecheck
     - typecheck
     - unconvert
     - unused
-    # - varcheck # deprecated - https://github.com/golangci/golangci-lint/issues/1841
     - wastedassign
-  enable-all: false
-  disable-all: true
-  fast: false
 
 run:
   timeout: 10m
 
+output:
+  sort-results: true
+
 linters-settings:
   stylecheck:
     checks: ["all", "-ST1005", "-ST1003"]
@@ -47,27 +46,37 @@ linters-settings:
     errorCode: 1
     warningCode: 1
     rules:
+      - name: atomic
+      - name: bare-return
       - name: blank-imports
+      - name: constant-logical-expr
       - name: context-as-argument
       - name: context-keys-type
       - name: dot-imports
+      - name: duplicated-imports
+      - name: empty-lines
+      - name: error-naming
       - name: error-return
       - name: error-strings
-      - name: error-naming
+      - name: errorf
       - name: exported
+      - name: identical-branches
       - name: if-return
       - name: increment-decrement
-      - name: var-naming
-      - name: var-declaration
+      - name: indent-error-flow
+      - name: modifies-value-receiver
       - name: package-comments
       - name: range
       - name: receiver-naming
+      - name: redefines-builtin-id
+      - name: string-of-int
+      - name: superfluous-else
       - name: time-naming
+      - name: unconditional-recursion
       - name: unexported-return
-      - name: indent-error-flow
-      - name: errorf
-      - name: duplicated-imports
-      - name: modifies-value-receiver
+      - name: unreachable-code
+      - name: var-declaration
+      - name: var-naming
   gofumpt:
     extra-rules: true
   depguard:
@@ -93,8 +102,8 @@ issues:
   max-issues-per-linter: 0
   max-same-issues: 0
   exclude-dirs: [node_modules, public, web_src]
+  exclude-case-sensitive: true
   exclude-rules:
-    # Exclude some linters from running on tests files.
     - path: _test\.go
       linters:
         - gocyclo
@@ -112,19 +121,19 @@ issues:
     - path: cmd
       linters:
         - forbidigo
-    - linters:
+    - text: "webhook"
+      linters:
         - dupl
-      text: "webhook"
-    - linters:
+    - text: "`ID' should not be capitalized"
+      linters:
         - gocritic
-      text: "`ID' should not be capitalized"
-    - linters:
+    - text: "swagger"
+      linters:
         - unused
         - deadcode
-      text: "swagger"
-    - linters:
+    - text: "argument x is overwritten before first use"
+      linters:
         - staticcheck
-      text: "argument x is overwritten before first use"
     - text: "commentFormatting: put a space between `//` and comment text"
       linters:
         - gocritic

cmd/hook.go

@@ -465,7 +465,7 @@ func hookPrintResult(output, isCreate bool, branch, url string) {
 		fmt.Fprintf(os.Stderr, "  %s\n", url)
 	}
 	fmt.Fprintln(os.Stderr, "")
-	os.Stderr.Sync()
+	_ = os.Stderr.Sync()
 }
 
 func pushOptions() map[string]string {

models/asymkey/gpg_key_commit_verification.go

@@ -110,7 +110,6 @@ func ParseCommitWithSignature(ctx context.Context, c *git.Commit) *CommitVerific
 					Reason:         "gpg.error.no_committer_account",
 				}
 			}
-
 		}
 	}
 

models/db/engine.go

@@ -227,7 +227,6 @@ func NamesToBean(names ...string) ([]any, error) {
 	// Need to map provided names to beans...
 	beanMap := make(map[string]any)
 	for _, bean := range tables {
-
 		beanMap[strings.ToLower(reflect.Indirect(reflect.ValueOf(bean)).Type().Name())] = bean
 		beanMap[strings.ToLower(x.TableName(bean))] = bean
 		beanMap[strings.ToLower(x.TableName(bean, true))] = bean

models/issues/review.go

@@ -345,11 +345,9 @@ func CreateReview(ctx context.Context, opts CreateReviewOptions) (*Review, error
 				return nil, err
 			}
 		}
-
 	} else if opts.ReviewerTeam != nil {
 		review.Type = ReviewTypeRequest
 		review.ReviewerTeamID = opts.ReviewerTeam.ID
-
 	} else {
 		return nil, fmt.Errorf("provide either reviewer or reviewer team")
 	}

models/migrations/base/db.go

@@ -177,7 +177,6 @@ func RecreateTable(sess *xorm.Session, bean any) error {
 			log.Error("Unable to recreate uniques on table %s. Error: %v", tableName, err)
 			return err
 		}
-
 	case setting.Database.Type.IsMySQL():
 		// MySQL will drop all the constraints on the old table
 		if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
@@ -228,7 +227,6 @@ func RecreateTable(sess *xorm.Session, bean any) error {
 				return err
 			}
 			sequenceMap[sequence] = sequenceData
-
 		}
 
 		// CASCADE causes postgres to drop all the constraints on the old table
@@ -293,9 +291,7 @@ func RecreateTable(sess *xorm.Session, bean any) error {
 					return err
 				}
 			}
-
 		}
-
 	case setting.Database.Type.IsMSSQL():
 		// MSSQL will drop all the constraints on the old table
 		if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
@@ -308,7 +304,6 @@ func RecreateTable(sess *xorm.Session, bean any) error {
 			log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
 			return err
 		}
-
 	default:
 		log.Fatal("Unrecognized DB")
 	}

models/migrations/v1_11/v111.go

@@ -262,7 +262,6 @@ func AddBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 		for _, u := range units {
 			var found bool
 			for _, team := range teams {
-
 				var teamU []*TeamUnit
 				var unitEnabled bool
 				err = sess.Where("team_id = ?", team.ID).Find(&teamU)
@@ -331,7 +330,6 @@ func AddBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 		}
 
 		if !protectedBranch.EnableApprovalsWhitelist {
-
 			perm, err := getUserRepoPermission(sess, baseRepo, reviewer)
 			if err != nil {
 				return false, err

models/migrations/v1_20/v250.go

@@ -104,7 +104,7 @@ func ChangeContainerMetadataMultiArch(x *xorm.Engine) error {
 
 		// Convert to new metadata format
 
-		new := &MetadataNew{
+		newMetadata := &MetadataNew{
 			Type:             old.Type,
 			IsTagged:         old.IsTagged,
 			Platform:         old.Platform,
@@ -119,7 +119,7 @@ func ChangeContainerMetadataMultiArch(x *xorm.Engine) error {
 			Manifests:        manifests,
 		}
 
-		metadataJSON, err := json.Marshal(new)
+		metadataJSON, err := json.Marshal(newMetadata)
 		if err != nil {
 			return err
 		}

models/migrations/v1_6/v71.go

@@ -61,7 +61,6 @@ func AddScratchHash(x *xorm.Engine) error {
 			if _, err := sess.ID(tfa.ID).Cols("scratch_salt, scratch_hash").Update(tfa); err != nil {
 				return fmt.Errorf("couldn't add in scratch_hash and scratch_salt: %w", err)
 			}
-
 		}
 	}
 

models/migrations/v1_9/v85.go

@@ -81,7 +81,6 @@ func HashAppToken(x *xorm.Engine) error {
 			if _, err := sess.ID(token.ID).Cols("token_hash, token_salt, token_last_eight, sha1").Update(token); err != nil {
 				return fmt.Errorf("couldn't add in sha1, token_hash, token_salt and token_last_eight: %w", err)
 			}
-
 		}
 	}
 

models/organization/team.go

@@ -226,9 +226,8 @@ func GetTeamIDsByNames(ctx context.Context, orgID int64, names []string, ignoreN
 		if err != nil {
 			if ignoreNonExistent {
 				continue
-			} else {
-				return nil, err
 			}
+			return nil, err
 		}
 		ids = append(ids, u.ID)
 	}

models/project/board.go

@@ -110,13 +110,11 @@ func createBoardsForProjectsType(ctx context.Context, project *Project) error {
 	var items []string
 
 	switch project.BoardType {
-
 	case BoardTypeBugTriage:
 		items = setting.Project.ProjectBoardBugTriageType
 
 	case BoardTypeBasicKanban:
 		items = setting.Project.ProjectBoardBasicKanbanType
-
 	case BoardTypeNone:
 		fallthrough
 	default:

models/repo/user_repo.go

@@ -170,7 +170,6 @@ func GetReviewers(ctx context.Context, repo *Repository, doerID, posterID int64)
 			// the owner of a private repo needs to be explicitly added.
 			cond = cond.Or(builder.Eq{"`user`.id": repo.Owner.ID})
 		}
-
 	} else {
 		// This is a "public" repository:
 		// Any user that has read access, is a watcher or organization member can be requested to review

models/user/user.go

@@ -988,9 +988,8 @@ func GetUserIDsByNames(ctx context.Context, names []string, ignoreNonExistent bo
 		if err != nil {
 			if ignoreNonExistent {
 				continue
-			} else {
-				return nil, err
 			}
+			return nil, err
 		}
 		ids = append(ids, u.ID)
 	}

modules/auth/password/password.go

@@ -63,16 +63,16 @@ func NewComplexity() {
 func setupComplexity(values []string) {
 	if len(values) != 1 || values[0] != "off" {
 		for _, val := range values {
-			if complex, ok := charComplexities[val]; ok {
-				validChars += complex.ValidChars
-				requiredList = append(requiredList, complex)
+			if complexity, ok := charComplexities[val]; ok {
+				validChars += complexity.ValidChars
+				requiredList = append(requiredList, complexity)
 			}
 		}
 		if len(requiredList) == 0 {
 			// No valid character classes found; use all classes as default
-			for _, complex := range charComplexities {
-				validChars += complex.ValidChars
-				requiredList = append(requiredList, complex)
+			for _, complexity := range charComplexities {
+				validChars += complexity.ValidChars
+				requiredList = append(requiredList, complexity)
 			}
 		}
 	}

modules/git/batch_reader.go

@@ -307,10 +307,10 @@ func ParseTreeLine(objectFormat ObjectFormat, rd *bufio.Reader, modeBuf, fnameBu
 
 	// Deal with the binary hash
 	idx = 0
-	len := objectFormat.FullLength() / 2
-	for idx < len {
+	length := objectFormat.FullLength() / 2
+	for idx < length {
 		var read int
-		read, err = rd.Read(shaBuf[idx:len])
+		read, err = rd.Read(shaBuf[idx:length])
 		n += read
 		if err != nil {
 			return mode, fname, sha, n, err

modules/git/commit_reader.go

@@ -49,9 +49,8 @@ readLoop:
 			if len(line) > 0 && line[0] == ' ' {
 				_, _ = signatureSB.Write(line[1:])
 				continue
-			} else {
-				pgpsig = false
 			}
+			pgpsig = false
 		}
 
 		if !message {

modules/git/pipeline/lfs_nogogit.go

@@ -232,7 +232,6 @@ func FindLFSFile(repo *git.Repository, objectID git.ObjectID) ([]*LFSResult, err
 				errChan <- err
 				break
 			}
-
 		}
 	}()
 

modules/git/repo_commit.go

@@ -251,18 +251,18 @@ func (repo *Repository) CommitsByFileAndRange(opts CommitsByFileAndRangeOptions)
 		return nil, err
 	}
 
-	len := objectFormat.FullLength()
+	length := objectFormat.FullLength()
 	commits := []*Commit{}
-	shaline := make([]byte, len+1)
+	shaline := make([]byte, length+1)
 	for {
 		n, err := io.ReadFull(stdoutReader, shaline)
-		if err != nil || n < len {
+		if err != nil || n < length {
 			if err == io.EOF {
 				err = nil
 			}
 			return commits, err
 		}
-		objectID, err := NewIDFromString(string(shaline[0:len]))
+		objectID, err := NewIDFromString(string(shaline[0:length]))
 		if err != nil {
 			return nil, err
 		}

modules/git/submodule.go

@@ -64,7 +64,6 @@ func getRefURL(refURL, urlPrefix, repoFullName, sshDomain string) string {
 		// ex: git@try.gitea.io:go-gitea/gitea
 		match := scpSyntax.FindAllStringSubmatch(refURI, -1)
 		if len(match) > 0 {
-
 			m := match[0]
 			refHostname := m[2]
 			pth := m[3]

modules/indexer/code/bleve/bleve.go

@@ -191,7 +191,6 @@ func (b *Indexer) addDelete(filename string, repo *repo_model.Repository, batch
 func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha string, changes *internal.RepoChanges) error {
 	batch := inner_bleve.NewFlushingBatch(b.inner.Indexer, maxBatchSize)
 	if len(changes.Updates) > 0 {
-
 		// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
 		if err := git.EnsureValidGitRepository(ctx, repo.RepoPath()); err != nil {
 			log.Error("Unable to open git repo: %s for %-v: %v", repo.RepoPath(), repo, err)
@@ -335,7 +334,6 @@ func (b *Indexer) Search(ctx context.Context, opts *internal.SearchOptions) (int
 		if result, err = b.inner.Indexer.Search(facetRequest); err != nil {
 			return 0, nil, nil, err
 		}
-
 	}
 	languagesFacet := result.Facets["languages"]
 	for _, term := range languagesFacet.Terms.Terms() {

modules/indexer/issues/elasticsearch/elasticsearch.go

@@ -145,7 +145,6 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 	query := elastic.NewBoolQuery()
 
 	if options.Keyword != "" {
-
 		searchType := esMultiMatchTypePhrasePrefix
 		if options.IsFuzzyKeyword {
 			searchType = esMultiMatchTypeBestFields

modules/log/event_format.go

@@ -125,7 +125,6 @@ func EventFormatTextMessage(mode *WriterMode, event *Event, msgFormat string, ms
 		if mode.Colorize {
 			buf = append(buf, resetBytes...)
 		}
-
 	}
 	if flags&(Lshortfile|Llongfile) != 0 {
 		if mode.Colorize {

modules/markup/markdown/markdown_test.go

@@ -466,7 +466,6 @@ func TestColorPreview(t *testing.T) {
 		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
 		assert.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
 		assert.Equal(t, template.HTML(test.expected), res, "Unexpected result in testcase %q", test.testcase)
-
 	}
 
 	negativeTests := []string{
@@ -549,7 +548,6 @@ func TestMathBlock(t *testing.T) {
 		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
 		assert.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
 		assert.Equal(t, template.HTML(test.expected), res, "Unexpected result in testcase %q", test.testcase)
-
 	}
 }
 

modules/packages/rubygems/marshal.go

@@ -147,35 +147,35 @@ func (e *MarshalEncoder) marshalIntInternal(i int64) error {
 		return e.w.WriteByte(byte(i - 5))
 	}
 
-	var len int
+	var length int
 	if 122 < i && i <= 0xff {
-		len = 1
+		length = 1
 	} else if 0xff < i && i <= 0xffff {
-		len = 2
+		length = 2
 	} else if 0xffff < i && i <= 0xffffff {
-		len = 3
+		length = 3
 	} else if 0xffffff < i && i <= 0x3fffffff {
-		len = 4
+		length = 4
 	} else if -0x100 <= i && i < -123 {
-		len = -1
+		length = -1
 	} else if -0x10000 <= i && i < -0x100 {
-		len = -2
+		length = -2
 	} else if -0x1000000 <= i && i < -0x100000 {
-		len = -3
+		length = -3
 	} else if -0x40000000 <= i && i < -0x1000000 {
-		len = -4
+		length = -4
 	} else {
 		return ErrInvalidIntRange
 	}
 
-	if err := e.w.WriteByte(byte(len)); err != nil {
+	if err := e.w.WriteByte(byte(length)); err != nil {
 		return err
 	}
-	if len < 0 {
-		len = -len
+	if length < 0 {
+		length = -length
 	}
 
-	for c := 0; c < len; c++ {
+	for c := 0; c < length; c++ {
 		if err := e.w.WriteByte(byte(i >> uint(8*c) & 0xff)); err != nil {
 			return err
 		}
@@ -244,13 +244,13 @@ func (e *MarshalEncoder) marshalArray(arr reflect.Value) error {
 		return err
 	}
 
-	len := arr.Len()
+	length := arr.Len()
 
-	if err := e.marshalIntInternal(int64(len)); err != nil {
+	if err := e.marshalIntInternal(int64(length)); err != nil {
 		return err
 	}
 
-	for i := 0; i < len; i++ {
+	for i := 0; i < length; i++ {
 		if err := e.marshal(arr.Index(i).Interface()); err != nil {
 			return err
 		}

modules/process/manager_stacktraces.go

@@ -339,7 +339,6 @@ func (pm *Manager) ProcessStacktraces(flat, noSystem bool) ([]*Process, int, int
 	}
 	sort.Slice(processes, after(processes))
 	if !flat {
-
 		var sortChildren func(process *Process)
 
 		sortChildren = func(process *Process) {

modules/repository/temp.go

@@ -32,7 +32,6 @@ func CreateTemporaryPath(prefix string) (string, error) {
 	if err != nil {
 		log.Error("Unable to create temporary directory: %s-*.git (%v)", prefix, err)
 		return "", fmt.Errorf("Failed to create dir %s-*.git: %w", prefix, err)
-
 	}
 	return basePath, nil
 }

modules/setting/time.go

@@ -19,9 +19,8 @@ func loadTimeFrom(rootCfg ConfigProvider) {
 		DefaultUILocation, err = time.LoadLocation(zone)
 		if err != nil {
 			log.Fatal("Load time zone failed: %v", err)
-		} else {
-			log.Info("Default UI Location is %v", zone)
 		}
+		log.Info("Default UI Location is %v", zone)
 	}
 	if DefaultUILocation == nil {
 		DefaultUILocation = time.Local

modules/templates/htmlrenderer.go

@@ -138,10 +138,9 @@ func wrapTmplErrMsg(msg string) {
 	if setting.IsProd {
 		// in prod mode, Gitea must have correct templates to run
 		log.Fatal("Gitea can't run with template errors: %s", msg)
-	} else {
+	}
 	// in dev mode, do not need to really exit, because the template errors could be fixed by developer soon and the templates get reloaded
 	log.Error("There are template errors but Gitea continues to run in dev mode: %s", msg)
-	}
 }
 
 type templateErrorPrettier struct {

modules/templates/mailer.go

@@ -84,9 +84,8 @@ func Mailer(ctx context.Context) (*texttmpl.Template, *template.Template) {
 			if err = buildSubjectBodyTemplate(subjectTemplates, bodyTemplates, tmplName, content); err != nil {
 				if firstRun {
 					log.Fatal("Failed to parse mail template, err: %v", err)
-				} else {
-					log.Error("Failed to parse mail template, err: %v", err)
 				}
+				log.Error("Failed to parse mail template, err: %v", err)
 			}
 		}
 	}