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
  10static const char builtin_check_ref_format_usage[] =
  11"git check-ref-format [--print] <refname>\n"
  12"   or: git check-ref-format --branch <branchname-shorthand>";
  13
  14/*
  15 * Replace each run of adjacent slashes in src with a single slash,
  16 * and write the result to dst.
  17 *
  18 * This function is similar to normalize_path_copy(), but stripped down
  19 * to meet check_ref_format's simpler needs.
  20 */
  21static void collapse_slashes(char *dst, const char *src)
  22{
  23        char ch;
  24        char prev = '\0';
  25
  26        while ((ch = *src++) != '\0') {
  27                if (prev == '/' && ch == prev)
  28                        continue;
  29
  30                *dst++ = ch;
  31                prev = ch;
  32        }
  33        *dst = '\0';
  34}
  35
  36static int check_ref_format_branch(const char *arg)
  37{
  38        struct strbuf sb = STRBUF_INIT;
  39
  40        if (strbuf_check_branch_ref(&sb, arg))
  41                die("'%s' is not a valid branch name", arg);
  42        printf("%s\n", sb.buf + 11);
  43        return 0;
  44}
  45
  46static int check_ref_format_print(const char *arg)
  47{
  48        char *refname = xmalloc(strlen(arg) + 1);
  49
  50        if (check_ref_format(arg))
  51                return 1;
  52        collapse_slashes(refname, arg);
  53        printf("%s\n", refname);
  54        return 0;
  55}
  56
  57int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  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        if (argc == 3 && !strcmp(argv[1], "--print"))
  65                return check_ref_format_print(argv[2]);
  66        if (argc != 2)
  67                usage(builtin_check_ref_format_usage);
  68        return !!check_ref_format(argv[1]);
  69}