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] [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 */
  21static char *collapse_slashes(const char *refname)
  22{
  23        char *ret = xmalloc(strlen(refname) + 1);
  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
  39static 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        return 0;
  49}
  50
  51static void refname_format_print(const char *arg)
  52{
  53        char *refname = collapse_slashes(arg);
  54        printf("%s\n", refname);
  55}
  56
  57int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  58{
  59        int i;
  60        int print = 0;
  61        int flags = 0;
  62
  63        if (argc == 2 && !strcmp(argv[1], "-h"))
  64                usage(builtin_check_ref_format_usage);
  65
  66        if (argc == 3 && !strcmp(argv[1], "--branch"))
  67                return check_ref_format_branch(argv[2]);
  68
  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);
  83
  84        if (check_refname_format(argv[i], flags))
  85                return 1;
  86
  87        if (print)
  88                refname_format_print(argv[i]);
  89
  90        return 0;
  91}