Andrew's git - gitweb.git/blob - 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 */
  17static 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
  32int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  33{
  34        if (argc == 2 && !strcmp(argv[1], "-h"))
  35                usage(builtin_check_ref_format_usage);
  36
  37        if (argc == 3 && !strcmp(argv[1], "--branch")) {
  38                struct strbuf sb = STRBUF_INIT;
  39
  40                if (strbuf_check_branch_ref(&sb, argv[2]))
  41                        die("'%s' is not a valid branch name", argv[2]);
  42                printf("%s\n", sb.buf + 11);
  43                exit(0);
  44        }
  45        if (argc == 3 && !strcmp(argv[1], "--print")) {
  46                char *refname = xmalloc(strlen(argv[2]) + 1);
  47
  48                if (check_ref_format(argv[2]))
  49                        exit(1);
  50                collapse_slashes(refname, argv[2]);
  51                printf("%s\n", refname);
  52                exit(0);
  53        }
  54        if (argc != 2)
  55                usage("git check-ref-format refname");
  56        return !!check_ref_format(argv[1]);
  57}