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 [--normalize] [<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 = xmallocz(strlen(refname));
  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        const char *name;
  43        int nongit;
  44
  45        setup_git_directory_gently(&nongit);
  46        if (strbuf_check_branch_ref(&sb, arg) ||
  47            !skip_prefix(sb.buf, "refs/heads/", &name))
  48                die("'%s' is not a valid branch name", arg);
  49        printf("%s\n", name);
  50        strbuf_release(&sb);
  51        return 0;
  52}
  53
  54int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  55{
  56        int i;
  57        int normalize = 0;
  58        int flags = 0;
  59        const char *refname;
  60
  61        if (argc == 2 && !strcmp(argv[1], "-h"))
  62                usage(builtin_check_ref_format_usage);
  63
  64        if (argc == 3 && !strcmp(argv[1], "--branch"))
  65                return check_ref_format_branch(argv[2]);
  66
  67        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
  68                if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
  69                        normalize = 1;
  70                else if (!strcmp(argv[i], "--allow-onelevel"))
  71                        flags |= REFNAME_ALLOW_ONELEVEL;
  72                else if (!strcmp(argv[i], "--no-allow-onelevel"))
  73                        flags &= ~REFNAME_ALLOW_ONELEVEL;
  74                else if (!strcmp(argv[i], "--refspec-pattern"))
  75                        flags |= REFNAME_REFSPEC_PATTERN;
  76                else
  77                        usage(builtin_check_ref_format_usage);
  78        }
  79        if (! (i == argc - 1))
  80                usage(builtin_check_ref_format_usage);
  81
  82        refname = argv[i];
  83        if (normalize)
  84                refname = collapse_slashes(refname);
  85        if (check_refname_format(refname, flags))
  86                return 1;
  87        if (normalize)
  88                printf("%s\n", refname);
  89
  90        return 0;
  91}