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 * Remove leading slashes and replace each run of adjacent slashes in
  16 * src with a single slash, 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 = '/';
  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        int nongit;
  40
  41        setup_git_directory_gently(&nongit);
  42        if (strbuf_check_branch_ref(&sb, arg))
  43                die("'%s' is not a valid branch name", arg);
  44        printf("%s\n", sb.buf + 11);
  45        return 0;
  46}
  47
  48static void refname_format_print(const char *arg)
  49{
  50        char *refname = xmalloc(strlen(arg) + 1);
  51
  52        collapse_slashes(refname, arg);
  53        printf("%s\n", refname);
  54}
  55
  56int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  57{
  58        int i;
  59        int print = 0;
  60        int flags = 0;
  61
  62        if (argc == 2 && !strcmp(argv[1], "-h"))
  63                usage(builtin_check_ref_format_usage);
  64
  65        if (argc == 3 && !strcmp(argv[1], "--branch"))
  66                return check_ref_format_branch(argv[2]);
  67
  68        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
  69                if (!strcmp(argv[i], "--print"))
  70                        print = 1;
  71                else if (!strcmp(argv[i], "--allow-onelevel"))
  72                        flags |= REFNAME_ALLOW_ONELEVEL;
  73                else if (!strcmp(argv[i], "--no-allow-onelevel"))
  74                        flags &= ~REFNAME_ALLOW_ONELEVEL;
  75                else if (!strcmp(argv[i], "--refspec-pattern"))
  76                        flags |= REFNAME_REFSPEC_PATTERN;
  77                else
  78                        usage(builtin_check_ref_format_usage);
  79        }
  80        if (! (i == argc - 1))
  81                usage(builtin_check_ref_format_usage);
  82
  83        if (check_refname_format(argv[i], flags))
  84                return 1;
  85
  86        if (print)
  87                refname_format_print(argv[i]);
  88
  89        return 0;
  90}