symbolic-ref.con commit git-commit --amend: allow empty commit. (8588452)
   1#include "cache.h"
   2
   3static const char git_symbolic_ref_usage[] =
   4"git-symbolic-ref name [ref]";
   5
   6static void check_symref(const char *HEAD)
   7{
   8        unsigned char sha1[20];
   9        const char *git_HEAD = strdup(git_path("%s", HEAD));
  10        const char *git_refs_heads_master = resolve_ref(git_HEAD, sha1, 0);
  11        if (git_refs_heads_master) {
  12                /* we want to strip the .git/ part */
  13                int pfxlen = strlen(git_HEAD) - strlen(HEAD);
  14                puts(git_refs_heads_master + pfxlen);
  15        }
  16        else
  17                die("No such ref: %s", HEAD);
  18}
  19
  20int main(int argc, const char **argv)
  21{
  22        setup_git_directory();
  23        git_config(git_default_config);
  24        switch (argc) {
  25        case 2:
  26                check_symref(argv[1]);
  27                break;
  28        case 3:
  29                create_symref(strdup(git_path("%s", argv[1])), argv[2]);
  30                break;
  31        default:
  32                usage(git_symbolic_ref_usage);
  33        }
  34        return 0;
  35}