Code

989ee5cc023d55ee42aa2d1a316032f494a836bf
[git.git] / builtin / check-ref-format.c
1 /*
2  * GIT - The information manager from hell
3  */
5 #include "cache.h"
6 #include "refs.h"
7 #include "builtin.h"
8 #include "strbuf.h"
10 static const char builtin_check_ref_format_usage[] =
11 "git check-ref-format [--print] [options] <refname>\n"
12 "   or: git check-ref-format --branch <branchname-shorthand>";
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 = xmalloc(strlen(refname) + 1);
24         char ch;
25         char prev = '/';
26         char *cp = ret;
28         while ((ch = *refname++) != '\0') {
29                 if (prev == '/' && ch == prev)
30                         continue;
32                 *cp++ = ch;
33                 prev = ch;
34         }
35         *cp = '\0';
36         return ret;
37 }
39 static int check_ref_format_branch(const char *arg)
40 {
41         struct strbuf sb = STRBUF_INIT;
42         int nongit;
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         return 0;
49 }
51 static void refname_format_print(const char *arg)
52 {
53         char *refname = collapse_slashes(arg);
54         printf("%s\n", refname);
55 }
57 int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
58 {
59         int i;
60         int print = 0;
61         int flags = 0;
63         if (argc == 2 && !strcmp(argv[1], "-h"))
64                 usage(builtin_check_ref_format_usage);
66         if (argc == 3 && !strcmp(argv[1], "--branch"))
67                 return check_ref_format_branch(argv[2]);
69         for (i = 1; i < argc && argv[i][0] == '-'; i++) {
70                 if (!strcmp(argv[i], "--print"))
71                         print = 1;
72                 else if (!strcmp(argv[i], "--allow-onelevel"))
73                         flags |= REFNAME_ALLOW_ONELEVEL;
74                 else if (!strcmp(argv[i], "--no-allow-onelevel"))
75                         flags &= ~REFNAME_ALLOW_ONELEVEL;
76                 else if (!strcmp(argv[i], "--refspec-pattern"))
77                         flags |= REFNAME_REFSPEC_PATTERN;
78                 else
79                         usage(builtin_check_ref_format_usage);
80         }
81         if (! (i == argc - 1))
82                 usage(builtin_check_ref_format_usage);
84         if (check_refname_format(argv[i], flags))
85                 return 1;
87         if (print)
88                 refname_format_print(argv[i]);
90         return 0;
91 }