add description parameter to OPT__QUIET
[git/git.git] / builtin / symbolic-ref.c
CommitLineData
640ce105 1#include "builtin.h"
8098a178 2#include "cache.h"
8da19775 3#include "refs.h"
78558614 4#include "parse-options.h"
8098a178 5
78558614 6static const char * const git_symbolic_ref_usage[] = {
1b1dd23f 7 "git symbolic-ref [options] name [ref]",
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8 NULL
9};
8098a178 10
a0f4280f 11static void check_symref(const char *HEAD, int quiet)
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JH
12{
13 unsigned char sha1[20];
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JH
14 int flag;
15 const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag);
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16
17 if (!refs_heads_master)
8098a178 18 die("No such ref: %s", HEAD);
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JH
19 else if (!(flag & REF_ISSYMREF)) {
20 if (!quiet)
21 die("ref %s is not a symbolic ref", HEAD);
22 else
23 exit(1);
24 }
ed378ec7 25 puts(refs_heads_master);
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JH
26}
27
640ce105 28int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
8098a178 29{
a0f4280f 30 int quiet = 0;
8b5157e4 31 const char *msg = NULL;
78558614 32 struct option options[] = {
d52ee6e6 33 OPT__QUIET(&quiet, "be quiet"),
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34 OPT_STRING('m', NULL, &msg, "reason", "reason of the update"),
35 OPT_END(),
36 };
a0f4280f 37
ef90d6d4 38 git_config(git_default_config, NULL);
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39 argc = parse_options(argc, argv, prefix, options,
40 git_symbolic_ref_usage, 0);
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41 if (msg &&!*msg)
42 die("Refusing to perform update with empty message");
8098a178 43 switch (argc) {
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44 case 1:
45 check_symref(argv[0], quiet);
8098a178 46 break;
78558614 47 case 2:
afe5d3d5 48 if (!strcmp(argv[0], "HEAD") &&
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49 prefixcmp(argv[1], "refs/"))
50 die("Refusing to point HEAD outside of refs/");
78558614 51 create_symref(argv[0], argv[1], msg);
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52 break;
53 default:
78558614 54 usage_with_options(git_symbolic_ref_usage, options);
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55 }
56 return 0;
57}