builtin/ls-remote.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5
   6 static const char ls_remote_usage[] =
   7 "git ls-remote [--heads] [--tags]  [-u <exec> | --upload-pack <exec>]\n"
   8 "                     [<repository> [<refs>...]]";
   9
  10 /*
  11  * Is there one among the list of patterns that match the tail part
  12  * of the path?
  13  */
  14 static int tail_match(const char **pattern, const char *path)
  15 {
  16         const char *p;
  17         char pathbuf[PATH_MAX];
  18
  19         if (!pattern)
  20                 return 1; /* no restriction */
  21
  22         if (snprintf(pathbuf, sizeof(pathbuf), "/%s", path) > sizeof(pathbuf))
  23                 return error("insanely long ref %.*s...", 20, path);
  24         while ((p = *(pattern++)) != NULL) {
  25                 if (!fnmatch(p, pathbuf, 0))
  26                         return 1;
  27         }
  28         return 0;
  29 }
  30
  31 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
  32 {
  33         int i;
  34         const char *dest = NULL;
  35         int nongit;
  36         unsigned flags = 0;
  37         const char *uploadpack = NULL;
  38         const char **pattern = NULL;
  39
  40         struct remote *remote;
  41         struct transport *transport;
  42         const struct ref *ref;
  43
  44         setup_git_directory_gently(&nongit);
  45
  46         for (i = 1; i < argc; i++) {
  47                 const char *arg = argv[i];
  48
  49                 if (*arg == '-') {
  50                         if (!prefixcmp(arg, "--upload-pack=")) {
  51                                 uploadpack = arg + 14;
  52                                 continue;
  53                         }
  54                         if (!prefixcmp(arg, "--exec=")) {
  55                                 uploadpack = arg + 7;
  56                                 continue;
  57                         }
  58                         if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
  59                                 flags |= REF_TAGS;
  60                                 continue;
  61                         }
  62                         if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
  63                                 flags |= REF_HEADS;
  64                                 continue;
  65                         }
  66                         if (!strcmp("--refs", arg)) {
  67                                 flags |= REF_NORMAL;
  68                                 continue;
  69                         }
  70                         usage(ls_remote_usage);
  71                 }
  72                 dest = arg;
  73                 i++;
  74                 break;
  75         }
  76
  77         if (argv[i]) {
  78                 int j;
  79                 pattern = xcalloc(sizeof(const char *), argc - i + 1);
  80                 for (j = i; j < argc; j++) {
  81                         int len = strlen(argv[j]);
  82                         char *p = xmalloc(len + 3);
  83                         sprintf(p, "*/%s", argv[j]);
  84                         pattern[j - i] = p;
  85                 }
  86         }
  87         remote = remote_get(dest);
  88         if (!remote) {
  89                 if (dest)
  90                         die("bad repository '%s'", dest);
  91                 die("No remote configured to list refs from.");
  92         }
  93         if (!remote->url_nr)
  94                 die("remote %s has no configured URL", dest);
  95         transport = transport_get(remote, NULL);
  96         if (uploadpack != NULL)
  97                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
  98
  99         ref = transport_get_remote_refs(transport);
 100         if (transport_disconnect(transport))
 101                 return 1;
 102         for ( ; ref; ref = ref->next) {
 103                 if (!check_ref_type(ref, flags))
 104                         continue;
 105                 if (!tail_match(pattern, ref->name))
 106                         continue;
 107                 printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
 108         }
 109         return 0;
 110 }