Andrew's git - gitweb.git/blob

72959547b31ccf0239a146b91a06d92332b901f6
   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
  56#define REFNAME_ALLOW_ONELEVEL 1
  57#define REFNAME_REFSPEC_PATTERN 2
  58
  59int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
  60{
  61        int i;
  62        int print = 0;
  63        int flags = 0;
  64
  65        if (argc == 2 && !strcmp(argv[1], "-h"))
  66                usage(builtin_check_ref_format_usage);
  67
  68        if (argc == 3 && !strcmp(argv[1], "--branch"))
  69                return check_ref_format_branch(argv[2]);
  70
  71        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
  72                if (!strcmp(argv[i], "--print"))
  73                        print = 1;
  74                else if (!strcmp(argv[i], "--allow-onelevel"))
  75                        flags |= REFNAME_ALLOW_ONELEVEL;
  76                else if (!strcmp(argv[i], "--no-allow-onelevel"))
  77                        flags &= ~REFNAME_ALLOW_ONELEVEL;
  78                else if (!strcmp(argv[i], "--refspec-pattern"))
  79                        flags |= REFNAME_REFSPEC_PATTERN;
  80                else
  81                        usage(builtin_check_ref_format_usage);
  82        }
  83        if (! (i == argc - 1))
  84                usage(builtin_check_ref_format_usage);
  85
  86        switch (check_ref_format(argv[i])) {
  87        case CHECK_REF_FORMAT_OK:
  88                break;
  89        case CHECK_REF_FORMAT_ERROR:
  90                return 1;
  91        case CHECK_REF_FORMAT_ONELEVEL:
  92                if (!(flags & REFNAME_ALLOW_ONELEVEL))
  93                        return 1;
  94                else
  95                        break;
  96        case CHECK_REF_FORMAT_WILDCARD:
  97                if (!(flags & REFNAME_REFSPEC_PATTERN))
  98                        return 1;
  99                else
 100                        break;
 101        default:
 102                die("internal error: unexpected value from check_ref_format()");
 103        }
 104
 105        if (print)
 106                refname_format_print(argv[i]);
 107
 108        return 0;
 109}