add flag to ignore exists tag

cmd/gt/main.go

@@ -11,13 +11,22 @@ import (
 )
 
 const (
-	flagRepoPath = "repo"
+	flagRepoPath        = "repo"
+	flagIgnoreExistsTag = "ignore-exists-tag"
 )
 
 var (
 	version = "unknown-local-build"
 )
 
+var (
+	cliFlagIgnoreExistsTag = &cli.BoolFlag{
+		Name:  flagIgnoreExistsTag,
+		Usage: "Use this option to force adding a new semver tag event when another one is exists",
+		Value: false,
+	}
+)
+
 func main() {
 	a := &cli.Command{
 		Version: version,
@@ -45,18 +54,21 @@ func main() {
 							{
 								Name:    "major",
 								Aliases: []string{"maj"},
+								Flags:   []cli.Flag{cliFlagIgnoreExistsTag},
 								Action:  withManager(buildTagIncrementor(repomanager.ComponentMajor)),
 								Usage:   "increment major part of semver",
 							},
 							{
 								Name:    "minor",
 								Aliases: []string{"min"},
+								Flags:   []cli.Flag{cliFlagIgnoreExistsTag},
 								Action:  withManager(buildTagIncrementor(repomanager.ComponentMinor)),
 								Usage:   "increment minor part of semver",
 							},
 							{
 								Name:    "patch",
 								Aliases: []string{"pat"},
+								Flags:   []cli.Flag{cliFlagIgnoreExistsTag},
 								Action:  withManager(buildTagIncrementor(repomanager.ComponentPatch)),
 								Usage:   "increment patch part of semver",
 							},
@@ -86,6 +98,8 @@ func main() {
 
 func buildTagIncrementor(component repomanager.Component) func(context.Context, *cli.Command, *repomanager.Manager) error {
 	return func(ctx context.Context, c *cli.Command, m *repomanager.Manager) error {
+		ignoreExistsTag := c.Bool(flagIgnoreExistsTag)
+
 		repoPath := c.String(flagRepoPath)
 		if repoPath == "" {
 			return errors.New("path to repo must be set by flag " + flagRepoPath)
@@ -101,7 +115,7 @@ func buildTagIncrementor(component repomanager.Component) func(context.Context,
 			return fmt.Errorf("get current tag: %w", err)
 		}
 
-		if curTag.HasVal() {
+		if curTag.HasVal() && !ignoreExistsTag {
 			return fmt.Errorf("semver tag is already exists: %s", curTag.Val().TagName())
 		}