Make the MSVC projects use PDB/IDB files named after the project
[git/dscho.git] / builtin-symbolic-ref.c
blobca855a5eb239f4dadccd53369e38db4e78b1d13f
1 #include "builtin.h"
2 #include "cache.h"
3 #include "refs.h"
4 #include "parse-options.h"
6 static const char * const git_symbolic_ref_usage[] = {
7 "git symbolic-ref [options] name [ref]",
8 NULL
9 };
11 static void check_symref(const char *HEAD, int quiet)
13 unsigned char sha1[20];
14 int flag;
15 const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag);
17 if (!refs_heads_master)
18 die("No such ref: %s", HEAD);
19 else if (!(flag & REF_ISSYMREF)) {
20 if (!quiet)
21 die("ref %s is not a symbolic ref", HEAD);
22 else
23 exit(1);
25 puts(refs_heads_master);
28 int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
30 int quiet = 0;
31 const char *msg = NULL;
32 struct option options[] = {
33 OPT__QUIET(&quiet),
34 OPT_STRING('m', NULL, &msg, "reason", "reason of the update"),
35 OPT_END(),
38 git_config(git_default_config, NULL);
39 argc = parse_options(argc, argv, prefix, options,
40 git_symbolic_ref_usage, 0);
41 if (msg &&!*msg)
42 die("Refusing to perform update with empty message");
43 switch (argc) {
44 case 1:
45 check_symref(argv[0], quiet);
46 break;
47 case 2:
48 if (!strcmp(argv[0], "HEAD") &&
49 prefixcmp(argv[1], "refs/"))
50 die("Refusing to point HEAD outside of refs/");
51 create_symref(argv[0], argv[1], msg);
52 break;
53 default:
54 usage_with_options(git_symbolic_ref_usage, options);
56 return 0;