freshlybakedca.ke
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1#define USE_THE_REPOSITORY_VARIABLE
2#include "builtin.h"
3#include "config.h"
4#include "environment.h"
5#include "gettext.h"
6#include "refs.h"
7#include "parse-options.h"
8#include "strbuf.h"
9
10static const char * const git_symbolic_ref_usage[] = {
11 N_("git symbolic-ref [-m <reason>] <name> <ref>"),
12 N_("git symbolic-ref [-q] [--short] [--no-recurse] <name>"),
13 N_("git symbolic-ref --delete [-q] <name>"),
14 NULL
15};
16
17static int check_symref(const char *HEAD, int quiet, int shorten, int recurse, int print)
18{
19 int resolve_flags, flag;
20 const char *refname;
21
22 resolve_flags = (recurse ? 0 : RESOLVE_REF_NO_RECURSE);
23 refname = refs_resolve_ref_unsafe(get_main_ref_store(the_repository),
24 HEAD, resolve_flags, NULL, &flag);
25
26 if (!refname)
27 die("No such ref: %s", HEAD);
28 else if (!(flag & REF_ISSYMREF)) {
29 if (!quiet)
30 die("ref %s is not a symbolic ref", HEAD);
31 else
32 return 1;
33 }
34 if (print) {
35 char *to_free = NULL;
36 if (shorten)
37 refname = to_free = refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
38 refname,
39 0);
40 puts(refname);
41 free(to_free);
42 }
43 return 0;
44}
45
46int cmd_symbolic_ref(int argc,
47 const char **argv,
48 const char *prefix,
49 struct repository *repo UNUSED)
50{
51 int quiet = 0, delete = 0, shorten = 0, recurse = 1, ret = 0;
52 const char *msg = NULL;
53 struct option options[] = {
54 OPT__QUIET(&quiet,
55 N_("suppress error message for non-symbolic (detached) refs")),
56 OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")),
57 OPT_BOOL(0, "short", &shorten, N_("shorten ref output")),
58 OPT_BOOL(0, "recurse", &recurse, N_("recursively dereference (default)")),
59 OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")),
60 OPT_END(),
61 };
62
63 repo_config(the_repository, git_default_config, NULL);
64 argc = parse_options(argc, argv, prefix, options,
65 git_symbolic_ref_usage, 0);
66 if (msg && !*msg)
67 die("Refusing to perform update with empty message");
68
69 if (delete) {
70 if (argc != 1)
71 usage_with_options(git_symbolic_ref_usage, options);
72 ret = check_symref(argv[0], 1, 0, 0, 0);
73 if (ret)
74 die("Cannot delete %s, not a symbolic ref", argv[0]);
75 if (!strcmp(argv[0], "HEAD"))
76 die("deleting '%s' is not allowed", argv[0]);
77 return refs_delete_ref(get_main_ref_store(the_repository),
78 NULL, argv[0], NULL, REF_NO_DEREF);
79 }
80
81 switch (argc) {
82 case 1:
83 ret = check_symref(argv[0], quiet, shorten, recurse, 1);
84 break;
85 case 2:
86 if (!strcmp(argv[0], "HEAD") &&
87 !starts_with(argv[1], "refs/"))
88 die("Refusing to point HEAD outside of refs/");
89 if (check_refname_format(argv[1], REFNAME_ALLOW_ONELEVEL) < 0)
90 die("Refusing to set '%s' to invalid ref '%s'", argv[0], argv[1]);
91 ret = !!refs_update_symref(get_main_ref_store(the_repository),
92 argv[0], argv[1], msg);
93 break;
94 default:
95 usage_with_options(git_symbolic_ref_usage, options);
96 }
97 return ret;
98}