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 = 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
  51int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  52{
  53        int i;
  54        int normalize = 0;
  55        int flags = 0;
  56        const char *refname;
  57
  58        if (argc == 2 && !strcmp(argv[1], "-h"))
  59                usage(builtin_check_ref_format_usage);
  60
  61        if (argc == 3 && !strcmp(argv[1], "--branch"))
  62                return check_ref_format_branch(argv[2]);
  63
  64        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
  65                if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
  66                        normalize = 1;
  67                else if (!strcmp(argv[i], "--allow-onelevel"))
  68                        flags |= REFNAME_ALLOW_ONELEVEL;
  69                else if (!strcmp(argv[i], "--no-allow-onelevel"))
  70                        flags &= ~REFNAME_ALLOW_ONELEVEL;
  71                else if (!strcmp(argv[i], "--refspec-pattern"))
  72                        flags |= REFNAME_REFSPEC_PATTERN;
  73                else
  74                        usage(builtin_check_ref_format_usage);
  75        }
  76        if (! (i == argc - 1))
  77                usage(builtin_check_ref_format_usage);
  78
  79        refname = argv[i];
  80        if (normalize)
  81                refname = collapse_slashes(refname);
  82        if (check_refname_format(refname, flags))
  83                return 1;
  84        if (normalize)
  85                printf("%s\n", refname);
  86
  87        return 0;
  88}