diff options
Diffstat (limited to '_examples')
-rw-r--r-- | _examples/README.md | 1 | ||||
-rw-r--r-- | _examples/find-if-any-tag-point-head/main.go | 38 |
2 files changed, 39 insertions, 0 deletions
diff --git a/_examples/README.md b/_examples/README.md index 92b9d4d..3a4c539 100644 --- a/_examples/README.md +++ b/_examples/README.md @@ -19,6 +19,7 @@ Here you can find a list of annotated _go-git_ examples: - [branch](branch/main.go) - How to create and remove branches or any other kind of reference. - [tag](tag/main.go) - List/print repository tags. - [tag create and push](tag-create-push/main.go) - Create and push a new tag. +- [tag find if head is tagged](find-if-any-tag-point-head/main.go) - Find if `HEAD` is tagged. - [remotes](remotes/main.go) - Working with remotes: adding, removing, etc. - [progress](progress/main.go) - Printing the progress information from the sideband. - [revision](revision/main.go) - Solve a revision into a commit. diff --git a/_examples/find-if-any-tag-point-head/main.go b/_examples/find-if-any-tag-point-head/main.go new file mode 100644 index 0000000..834aea2 --- /dev/null +++ b/_examples/find-if-any-tag-point-head/main.go @@ -0,0 +1,38 @@ +package main + +import ( + "fmt" + "os" + + "github.com/go-git/go-git/v5" + . "github.com/go-git/go-git/v5/_examples" + "github.com/go-git/go-git/v5/plumbing" +) + +// Basic example of how to find if HEAD is tagged. +func main() { + CheckArgs("<path>") + path := os.Args[1] + + // We instantiate a new repository targeting the given path (the .git folder) + r, err := git.PlainOpen(path) + CheckIfError(err) + + // Get HEAD reference to use for comparison later on. + ref, err := r.Head() + CheckIfError(err) + + tags, err := r.Tags() + CheckIfError(err) + + // List all tags, both lightweight tags and annotated tags and see if some tag points to HEAD reference. + err = tags.ForEach(func(t *plumbing.Reference) error { + // This technique should work for both lightweight and annotated tags. + revHash, err := r.ResolveRevision(plumbing.Revision(t.Name())) + CheckIfError(err) + if *revHash == ref.Hash() { + fmt.Printf("Found tag %s with hash %s pointing to HEAD %s\n", t.Name().Short(), revHash, ref.Hash()) + } + return nil + }) +} |