update golangci-lint to v2.7.0 (#36079)

- Update and autofix most issues
- Corrected variable names to `cutOk`
- Impossible condition in `services/migrations/onedev_test.go` removed
- `modules/setting/config_env.go:128:3` looks like a false-positive,
added nolint

modules/git/attribute/attribute.go

@@ -96,8 +96,8 @@ func (attrs *Attributes) GetGitlabLanguage() optional.Option[string] {
 		// gitlab-language may have additional parameters after the language
 		// ignore them and just use the main language
 		// https://docs.gitlab.com/ee/user/project/highlighting.html#override-syntax-highlighting-for-a-file-type
-		if idx := strings.IndexByte(raw, '?'); idx >= 0 {
-			return optional.Some(raw[:idx])
+		if before, _, ok := strings.Cut(raw, "?"); ok {
+			return optional.Some(before)
 		}
 	}
 	return attrStr

modules/git/foreachref/parser.go

@@ -113,10 +113,10 @@ func (p *Parser) parseRef(refBlock string) (map[string]string, error) {
 
 		var fieldKey string
 		var fieldVal string
-		firstSpace := strings.Index(field, " ")
-		if firstSpace > 0 {
-			fieldKey = field[:firstSpace]
-			fieldVal = field[firstSpace+1:]
+		before, after, ok := strings.Cut(field, " ")
+		if ok {
+			fieldKey = before
+			fieldVal = after
 		} else {
 			// could be the case if the requested field had no value
 			fieldKey = field

modules/git/parse.go

@@ -27,15 +27,15 @@ func parseLsTreeLine(line []byte) (*LsTreeEntry, error) {
 	// <mode> <type> <sha>\t<filename>
 
 	var err error
-	posTab := bytes.IndexByte(line, '\t')
-	if posTab == -1 {
+	before, after, ok := bytes.Cut(line, []byte{'\t'})
+	if !ok {
 		return nil, fmt.Errorf("invalid ls-tree output (no tab): %q", line)
 	}
 
 	entry := new(LsTreeEntry)
 
-	entryAttrs := line[:posTab]
-	entryName := line[posTab+1:]
+	entryAttrs := before
+	entryName := after
 
 	entryMode, entryAttrs, _ := bytes.Cut(entryAttrs, sepSpace)
 	_ /* entryType */, entryAttrs, _ = bytes.Cut(entryAttrs, sepSpace) // the type is not used, the mode is enough to determine the type

modules/highlight/highlight.go

@@ -77,8 +77,8 @@ func Code(fileName, language, code string) (output template.HTML, lexerName stri
 
 		if lexer == nil {
 			// Attempt stripping off the '?'
-			if idx := strings.IndexByte(language, '?'); idx > 0 {
-				lexer = lexers.Get(language[:idx])
+			if before, _, ok := strings.Cut(language, "?"); ok {
+				lexer = lexers.Get(before)
 			}
 		}
 	}

modules/indexer/code/internal/util.go

@@ -17,20 +17,20 @@ func FilenameIndexerID(repoID int64, filename string) string {
 }
 
 func ParseIndexerID(indexerID string) (int64, string) {
-	index := strings.IndexByte(indexerID, '_')
-	if index == -1 {
+	before, after, ok := strings.Cut(indexerID, "_")
+	if !ok {
 		log.Error("Unexpected ID in repo indexer: %s", indexerID)
 	}
-	repoID, _ := internal.ParseBase36(indexerID[:index])
-	return repoID, indexerID[index+1:]
+	repoID, _ := internal.ParseBase36(before)
+	return repoID, after
 }
 
 func FilenameOfIndexerID(indexerID string) string {
-	index := strings.IndexByte(indexerID, '_')
-	if index == -1 {
+	_, after, ok := strings.Cut(indexerID, "_")
+	if !ok {
 		log.Error("Unexpected ID in repo indexer: %s", indexerID)
 	}
-	return indexerID[index+1:]
+	return after
 }
 
 // FilenameMatchIndexPos returns the boundaries of its first seven lines.

modules/markup/html_link.go

@@ -33,7 +33,7 @@ func shortLinkProcessor(ctx *RenderContext, node *html.Node) {
 		// Of text and link contents
 		sl := strings.SplitSeq(content, "|")
 		for v := range sl {
-			if equalPos := strings.IndexByte(v, '='); equalPos == -1 {
+			if found := strings.Contains(v, "="); !found {
 				// There is no equal in this argument; this is a mandatory arg
 				if props["name"] == "" {
 					if IsFullURLString(v) {
@@ -55,8 +55,8 @@ func shortLinkProcessor(ctx *RenderContext, node *html.Node) {
 			} else {
 				// There is an equal; optional argument.
 
-				sep := strings.IndexByte(v, '=')
-				key, val := v[:sep], html.UnescapeString(v[sep+1:])
+				before, after, _ := strings.Cut(v, "=")
+				key, val := before, html.UnescapeString(after)
 
 				// When parsing HTML, x/net/html will change all quotes which are
 				// not used for syntax into UTF-8 quotes. So checking val[0] won't

modules/setting/config_env.go

@@ -51,10 +51,10 @@ func decodeEnvSectionKey(encoded string) (ok bool, section, key string) {
 	for _, unescapeIdx := range escapeStringIndices {
 		preceding := encoded[last:unescapeIdx[0]]
 		if !inKey {
-			if splitter := strings.Index(preceding, "__"); splitter > -1 {
-				section += preceding[:splitter]
+			if before, after, cutOk := strings.Cut(preceding, "__"); cutOk {
+				section += before
 				inKey = true
-				key += preceding[splitter+2:]
+				key += after
 			} else {
 				section += preceding
 			}
@@ -77,9 +77,9 @@ func decodeEnvSectionKey(encoded string) (ok bool, section, key string) {
 	}
 	remaining := encoded[last:]
 	if !inKey {
-		if splitter := strings.Index(remaining, "__"); splitter > -1 {
-			section += remaining[:splitter]
-			key += remaining[splitter+2:]
+		if before, after, cutOk := strings.Cut(remaining, "__"); cutOk {
+			section += before
+			key += after
 		} else {
 			section += remaining
 		}
@@ -111,21 +111,21 @@ func decodeEnvironmentKey(prefixGitea, suffixFile, envKey string) (ok bool, sect
 
 func EnvironmentToConfig(cfg ConfigProvider, envs []string) (changed bool) {
 	for _, kv := range envs {
-		idx := strings.IndexByte(kv, '=')
-		if idx < 0 {
+		before, after, ok := strings.Cut(kv, "=")
+		if !ok {
 			continue
 		}
 
 		// parse the environment variable to config section name and key name
-		envKey := kv[:idx]
-		envValue := kv[idx+1:]
+		envKey := before
+		envValue := after
 		ok, sectionName, keyName, useFileValue := decodeEnvironmentKey(EnvConfigKeyPrefixGitea, EnvConfigKeySuffixFile, envKey)
 		if !ok {
 			continue
 		}
 
 		// use environment value as config value, or read the file content as value if the key indicates a file
-		keyValue := envValue
+		keyValue := envValue //nolint:staticcheck // false positive
 		if useFileValue {
 			fileContent, err := os.ReadFile(envValue)
 			if err != nil {

modules/validation/binding.go

@@ -215,8 +215,8 @@ func addValidGroupTeamMapRule() {
 }
 
 func portOnly(hostport string) string {
-	colon := strings.IndexByte(hostport, ':')
-	if colon == -1 {
+	_, after, ok := strings.Cut(hostport, ":")
+	if !ok {
 		return ""
 	}
 	if i := strings.Index(hostport, "]:"); i != -1 {
@@ -225,7 +225,7 @@ func portOnly(hostport string) string {
 	if strings.Contains(hostport, "]") {
 		return ""
 	}
-	return hostport[colon+len(":"):]
+	return after
 }
 
 func validPort(p string) bool {