Andrew's git - gitweb.git/blob - builtin-symbolic-ref.c

   1#include "builtin.h"
   2#include "cache.h"
   3#include "refs.h"
   4
   5static const char git_symbolic_ref_usage[] =
   6"git-symbolic-ref [-q] name [ref]";
   7
   8static void check_symref(const char *HEAD, int quiet)
   9{
  10        unsigned char sha1[20];
  11        int flag;
  12        const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag);
  13
  14        if (!refs_heads_master)
  15                die("No such ref: %s", HEAD);
  16        else if (!(flag & REF_ISSYMREF)) {
  17                if (!quiet)
  18                        die("ref %s is not a symbolic ref", HEAD);
  19                else
  20                        exit(1);
  21        }
  22        puts(refs_heads_master);
  23}
  24
  25int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
  26{
  27        int quiet = 0;
  28
  29        git_config(git_default_config);
  30
  31        while (1 < argc) {
  32                const char *arg = argv[1];
  33                if (arg[0] != '-')
  34                        break;
  35                else if (!strcmp("-q", arg))
  36                        quiet = 1;
  37                else if (!strcmp("--", arg)) {
  38                        argc--;
  39                        argv++;
  40                        break;
  41                }
  42                else
  43                        die("unknown option %s", arg);
  44                argc--;
  45                argv++;
  46        }
  47
  48        switch (argc) {
  49        case 2:
  50                check_symref(argv[1], quiet);
  51                break;
  52        case 3:
  53                create_symref(argv[1], argv[2]);
  54                break;
  55        default:
  56                usage(git_symbolic_ref_usage);
  57        }
  58        return 0;
  59}