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 "                     [-q|--quiet] [--exit-code] [<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         unsigned flags = 0;
  36         int get_url = 0;
  37         int quiet = 0;
  38         int status = 0;
  39         const char *uploadpack = NULL;
  40         const char **pattern = NULL;
  41
  42         struct remote *remote;
  43         struct transport *transport;
  44         const struct ref *ref;
  45
  46         if (argc == 2 && !strcmp("-h", argv[1]))
  47                 usage(ls_remote_usage);
  48
  49         for (i = 1; i < argc; i++) {
  50                 const char *arg = argv[i];
  51
  52                 if (*arg == '-') {
  53                         if (!prefixcmp(arg, "--upload-pack=")) {
  54                                 uploadpack = arg + 14;
  55                                 continue;
  56                         }
  57                         if (!prefixcmp(arg, "--exec=")) {
  58                                 uploadpack = arg + 7;
  59                                 continue;
  60                         }
  61                         if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
  62                                 flags |= REF_TAGS;
  63                                 continue;
  64                         }
  65                         if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
  66                                 flags |= REF_HEADS;
  67                                 continue;
  68                         }
  69                         if (!strcmp("--refs", arg)) {
  70                                 flags |= REF_NORMAL;
  71                                 continue;
  72                         }
  73                         if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  74                                 quiet = 1;
  75                                 continue;
  76                         }
  77                         if (!strcmp("--get-url", arg)) {
  78                                 get_url = 1;
  79                                 continue;
  80                         }
  81                         if (!strcmp("--exit-code", arg)) {
  82                                 /* return this code if no refs are reported */
  83                                 status = 2;
  84                                 continue;
  85                         }
  86                         usage(ls_remote_usage);
  87                 }
  88                 dest = arg;
  89                 i++;
  90                 break;
  91         }
  92
  93         if (argv[i]) {
  94                 int j;
  95                 pattern = xcalloc(sizeof(const char *), argc - i + 1);
  96                 for (j = i; j < argc; j++) {
  97                         int len = strlen(argv[j]);
  98                         char *p = xmalloc(len + 3);
  99                         sprintf(p, "*/%s", argv[j]);
 100                         pattern[j - i] = p;
 101                 }
 102         }
 103         remote = remote_get(dest);
 104         if (!remote) {
 105                 if (dest)
 106                         die("bad repository '%s'", dest);
 107                 die("No remote configured to list refs from.");
 108         }
 109         if (!remote->url_nr)
 110                 die("remote %s has no configured URL", dest);
 111
 112         if (get_url) {
 113                 printf("%s\n", *remote->url);
 114                 return 0;
 115         }
 116
 117         transport = transport_get(remote, NULL);
 118         if (uploadpack != NULL)
 119                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
 120
 121         ref = transport_get_remote_refs(transport);
 122         if (transport_disconnect(transport))
 123                 return 1;
 124
 125         if (!dest && !quiet)
 126                 fprintf(stderr, "From %s\n", *remote->url);
 127         for ( ; ref; ref = ref->next) {
 128                 if (!check_ref_type(ref, flags))
 129                         continue;
 130                 if (!tail_match(pattern, ref->name))
 131                         continue;
 132                 printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
 133                 status = 0; /* we found something */
 134         }
 135         return status;
 136 }