Merge branch 'jc/t5601-copy-workaround'
[git/git.git] / builtin / check-ref-format.c
1 /*
2 * GIT - The information manager from hell
3 */
4
5 #include "cache.h"
6 #include "refs.h"
7 #include "builtin.h"
8 #include "strbuf.h"
9
10 static const char builtin_check_ref_format_usage[] =
11 "git check-ref-format [--normalize] [<options>] <refname>\n"
12 " or: git check-ref-format --branch <branchname-shorthand>";
13
14 /*
15 * Return a copy of refname but with leading slashes removed and runs
16 * of adjacent slashes replaced with single slashes.
17 *
18 * This function is similar to normalize_path_copy(), but stripped down
19 * to meet check_ref_format's simpler needs.
20 */
21 static char *collapse_slashes(const char *refname)
22 {
23 char *ret = xmallocz(strlen(refname));
24 char ch;
25 char prev = '/';
26 char *cp = ret;
27
28 while ((ch = *refname++) != '\0') {
29 if (prev == '/' && ch == prev)
30 continue;
31
32 *cp++ = ch;
33 prev = ch;
34 }
35 *cp = '\0';
36 return ret;
37 }
38
39 static int check_ref_format_branch(const char *arg)
40 {
41 struct strbuf sb = STRBUF_INIT;
42 int nongit;
43
44 setup_git_directory_gently(&nongit);
45 if (strbuf_check_branch_ref(&sb, arg))
46 die("'%s' is not a valid branch name", arg);
47 printf("%s\n", sb.buf + 11);
48 strbuf_release(&sb);
49 return 0;
50 }
51
52 int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
53 {
54 int i;
55 int normalize = 0;
56 int flags = 0;
57 const char *refname;
58
59 if (argc == 2 && !strcmp(argv[1], "-h"))
60 usage(builtin_check_ref_format_usage);
61
62 if (argc == 3 && !strcmp(argv[1], "--branch"))
63 return check_ref_format_branch(argv[2]);
64
65 for (i = 1; i < argc && argv[i][0] == '-'; i++) {
66 if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
67 normalize = 1;
68 else if (!strcmp(argv[i], "--allow-onelevel"))
69 flags |= REFNAME_ALLOW_ONELEVEL;
70 else if (!strcmp(argv[i], "--no-allow-onelevel"))
71 flags &= ~REFNAME_ALLOW_ONELEVEL;
72 else if (!strcmp(argv[i], "--refspec-pattern"))
73 flags |= REFNAME_REFSPEC_PATTERN;
74 else
75 usage(builtin_check_ref_format_usage);
76 }
77 if (! (i == argc - 1))
78 usage(builtin_check_ref_format_usage);
79
80 refname = argv[i];
81 if (normalize)
82 refname = collapse_slashes(refname);
83 if (check_refname_format(refname, flags))
84 return 1;
85 if (normalize)
86 printf("%s\n", refname);
87
88 return 0;
89 }