gistfile1.c

typedef struct git_repository git_repository;
typedef struct git_reference git_reference;
extern int git__rethrow(int error, const char *, ...);


void git_path_join(char *buffer_out, const char *path_a, const char *path_b);
int git_reference_lookup(git_reference **reference_out, git_repository *repo, const char *name);
int git_reference_delete(git_reference *ref);

static int retrieve_tag_reference(git_reference **tag_reference_out, char *ref_name_out, git_repository *repo, const char *tag_name)
{
 git_reference *tag_ref;
 int error;

 git_path_join(ref_name_out, "refs/" "tags/", tag_name);
 error = git_reference_lookup(&tag_ref, repo, ref_name_out);
 if (error < 0)
  return git__rethrow(error, "Failed to retrieve tag reference");

 *tag_reference_out = tag_ref;

 return 0;
}

int git_tag_delete(git_repository *repo, const char *tag_name)
{
 int error;
 git_reference *tag_ref;
 char ref_name[1024];

 error = retrieve_tag_reference(&tag_ref, ref_name, repo, tag_name);
 if (error < 0)
  return git__rethrow(error, "Failed to delete tag");

 return git_reference_delete(tag_ref);
}