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 /*
  11  * Replace each run of adjacent slashes in src with a single slash,
  12  * and write the result to dst.
  13  *
  14  * This function is similar to normalize_path_copy(), but stripped down
  15  * to meet check_ref_format's simpler needs.
  16  */
  17 static void collapse_slashes(char *dst, const char *src)
  18 {
  19         char ch;
  20         char prev = '\0';
  21
  22         while ((ch = *src++) != '\0') {
  23                 if (prev == '/' && ch == prev)
  24                         continue;
  25
  26                 *dst++ = ch;
  27                 prev = ch;
  28         }
  29         *dst = '\0';
  30 }
  31
  32 int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  33 {
  34         if (argc == 3 && !strcmp(argv[1], "--branch")) {
  35                 struct strbuf sb = STRBUF_INIT;
  36
  37                 if (strbuf_check_branch_ref(&sb, argv[2]))
  38                         die("'%s' is not a valid branch name", argv[2]);
  39                 printf("%s\n", sb.buf + 11);
  40                 exit(0);
  41         }
  42         if (argc == 3 && !strcmp(argv[1], "--print")) {
  43                 char *refname = xmalloc(strlen(argv[2]) + 1);
  44
  45                 if (check_ref_format(argv[2]))
  46                         exit(1);
  47                 collapse_slashes(refname, argv[2]);
  48                 printf("%s\n", refname);
  49                 exit(0);
  50         }
  51         if (argc != 2)
  52                 usage("git check-ref-format refname");
  53         return !!check_ref_format(argv[1]);
  54 }