diff options
| -rw-r--r-- | main.go | 4 | ||||
| -rw-r--r-- | showtags.go | 99 |
2 files changed, 103 insertions, 0 deletions
@@ -35,6 +35,10 @@ func main() { return } walkTree(t) + + showtags(repo) + // v0.0.8 + printCommitsForTag(repo, "v0.22.2") } // lists the files in the git repo diff --git a/showtags.go b/showtags.go new file mode 100644 index 0000000..880e6d7 --- /dev/null +++ b/showtags.go @@ -0,0 +1,99 @@ +package main + +import ( + "fmt" + "sort" + + git "go.wit.com/lib/libgit2" + "go.wit.com/log" +) + +func showtags(repo *git.Repository) { + // Map: commit OID -> list of tags pointing to it + tagMap := make(map[string][]string) + + // Walk through all tag names + tags, err := repo.NewReferenceIteratorGlob("refs/tags/*") + if err != nil { + log.Fatalf("Failed to iterate tags: %v", err) + } + + for { + ref, err := tags.Next() + if err != nil { + break // Done iterating + } + + name := ref.Shorthand() + target, err := repo.RevparseSingle(ref.Name()) + if err != nil { + log.Printf("Skipping unresolved tag: %s", name) + continue + } + + commitOID := target.Id().String() + tagMap[commitOID] = append(tagMap[commitOID], name) + log.Info("tag:", commitOID, name, target) + } + + // Identify and delete duplicate tags + for commit, tagList := range tagMap { + if len(tagList) > 1 { + sort.Strings(tagList) + fmt.Printf("Commit %s has duplicates: %v\n", commit, tagList) + + // Keep the first tag, delete the rest + for _, tag := range tagList[1:] { + refname := "refs/tags/" + tag + log.Info(refname) + /* + if err := repo.References.Remove(refname); err != nil { + log.Printf("Failed to delete tag %s: %v", tag, err) + } else { + fmt.Printf("Deleted tag: %s\n", tag) + } + */ + } + } + } +} + +func printCommitsForTag(repo *git.Repository, tagName string) error { + // Resolve tag reference + ref, err := repo.References.Lookup("refs/tags/" + tagName) + if err != nil { + return fmt.Errorf("failed to find tag %s: %w", tagName, err) + } + + // Resolve to commit object (may be annotated tag or direct commit) + obj, err := ref.Peel(git.ObjectCommit) + if err != nil { + return fmt.Errorf("failed to peel tag %s to commit: %w", tagName, err) + } + + start, err := obj.AsCommit() + if err != nil { + return fmt.Errorf("peeled object is not a commit: %w", err) + } + + // Walk the history + walker, err := repo.Walk() + if err != nil { + return fmt.Errorf("failed to create walker: %w", err) + } + + if err := walker.Push(start.Id()); err != nil { + return fmt.Errorf("failed to push start commit: %w", err) + } + + fmt.Printf("Commits for tag %s:\n", tagName) + err = walker.Iterate(func(c *git.Commit) bool { + fmt.Printf("%s %s\n", c.Id().String(), c.Summary()) + return true + }) + if err != nil { + return fmt.Errorf("error during walk: %w", err) + } + + return nil +} |