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|
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
}
|
