builtin/ls-remote.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "gettext.h"
   4 #include "hex.h"
   5 #include "transport.h"
   6 #include "pkt-line.h"
   7 #include "ref-filter.h"
   8 #include "remote.h"
   9 #include "refs.h"
  10 #include "parse-options.h"
  11
  12 static const char * const ls_remote_usage[] = {
  13         N_("git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
  14            "              [-q | --quiet] [--exit-code] [--get-url] [--sort=<key>]\n"
  15            "              [--symref] [<repository> [<patterns>...]]"),
  16         NULL
  17 };
  18
  19 /*
  20  * Is there one among the list of patterns that match the tail part
  21  * of the path?
  22  */
  23 static int tail_match(const char **pattern, const char *path)
  24 {
  25         const char *p;
  26         char *pathbuf;
  27
  28         if (!pattern)
  29                 return 1; /* no restriction */
  30
  31         pathbuf = xstrfmt("/%s", path);
  32         while ((p = *(pattern++)) != NULL) {
  33                 if (!wildmatch(p, pathbuf, 0)) {
  34                         free(pathbuf);
  35                         return 1;
  36                 }
  37         }
  38         free(pathbuf);
  39         return 0;
  40 }
  41
  42 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
  43 {
  44         const char *dest = NULL;
  45         unsigned flags = 0;
  46         int get_url = 0;
  47         int quiet = 0;
  48         int status = 0;
  49         int show_symref_target = 0;
  50         const char *uploadpack = NULL;
  51         const char **pattern = NULL;
  52         struct transport_ls_refs_options transport_options =
  53                 TRANSPORT_LS_REFS_OPTIONS_INIT;
  54         int i;
  55         struct string_list server_options = STRING_LIST_INIT_DUP;
  56
  57         struct remote *remote;
  58         struct transport *transport;
  59         const struct ref *ref;
  60         struct ref_array ref_array;
  61         struct string_list sorting_options = STRING_LIST_INIT_DUP;
  62
  63         struct option options[] = {
  64                 OPT__QUIET(&quiet, N_("do not print remote URL")),
  65                 OPT_STRING(0, "upload-pack", &uploadpack, N_("exec"),
  66                            N_("path of git-upload-pack on the remote host")),
  67                 { OPTION_STRING, 0, "exec", &uploadpack, N_("exec"),
  68                            N_("path of git-upload-pack on the remote host"),
  69                            PARSE_OPT_HIDDEN },
  70                 OPT_BIT('t', "tags", &flags, N_("limit to tags"), REF_TAGS),
  71                 OPT_BIT('h', "heads", &flags, N_("limit to heads"), REF_HEADS),
  72                 OPT_BIT(0, "refs", &flags, N_("do not show peeled tags"), REF_NORMAL),
  73                 OPT_BOOL(0, "get-url", &get_url,
  74                          N_("take url.<base>.insteadOf into account")),
  75                 OPT_REF_SORT(&sorting_options),
  76                 OPT_SET_INT_F(0, "exit-code", &status,
  77                               N_("exit with exit code 2 if no matching refs are found"),
  78                               2, PARSE_OPT_NOCOMPLETE),
  79                 OPT_BOOL(0, "symref", &show_symref_target,
  80                          N_("show underlying ref in addition to the object pointed by it")),
  81                 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
  82                 OPT_END()
  83         };
  84
  85         memset(&ref_array, 0, sizeof(ref_array));
  86
  87         argc = parse_options(argc, argv, prefix, options, ls_remote_usage,
  88                              PARSE_OPT_STOP_AT_NON_OPTION);
  89         dest = argv[0];
  90
  91         packet_trace_identity("ls-remote");
  92
  93         if (argc > 1) {
  94                 int i;
  95                 CALLOC_ARRAY(pattern, argc);
  96                 for (i = 1; i < argc; i++) {
  97                         pattern[i - 1] = xstrfmt("*/%s", argv[i]);
  98                 }
  99         }
 100
 101         if (flags & REF_TAGS)
 102                 strvec_push(&transport_options.ref_prefixes, "refs/tags/");
 103         if (flags & REF_HEADS)
 104                 strvec_push(&transport_options.ref_prefixes, "refs/heads/");
 105
 106         remote = remote_get(dest);
 107         if (!remote) {
 108                 if (dest)
 109                         die("bad repository '%s'", dest);
 110                 die("No remote configured to list refs from.");
 111         }
 112         if (!remote->url_nr)
 113                 die("remote %s has no configured URL", dest);
 114
 115         if (get_url) {
 116                 printf("%s\n", *remote->url);
 117                 return 0;
 118         }
 119
 120         transport = transport_get(remote, NULL);
 121         if (uploadpack)
 122                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
 123         if (server_options.nr)
 124                 transport->server_options = &server_options;
 125
 126         ref = transport_get_remote_refs(transport, &transport_options);
 127         if (ref) {
 128                 int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
 129                 repo_set_hash_algo(the_repository, hash_algo);
 130         }
 131
 132         if (!dest && !quiet)
 133                 fprintf(stderr, "From %s\n", *remote->url);
 134         for ( ; ref; ref = ref->next) {
 135                 struct ref_array_item *item;
 136                 if (!check_ref_type(ref, flags))
 137                         continue;
 138                 if (!tail_match(pattern, ref->name))
 139                         continue;
 140                 item = ref_array_push(&ref_array, ref->name, &ref->old_oid);
 141                 item->symref = xstrdup_or_null(ref->symref);
 142         }
 143
 144         if (sorting_options.nr) {
 145                 struct ref_sorting *sorting;
 146
 147                 sorting = ref_sorting_options(&sorting_options);
 148                 ref_array_sort(sorting, &ref_array);
 149                 ref_sorting_release(sorting);
 150         }
 151
 152         for (i = 0; i < ref_array.nr; i++) {
 153                 const struct ref_array_item *ref = ref_array.items[i];
 154                 if (show_symref_target && ref->symref)
 155                         printf("ref: %s\t%s\n", ref->symref, ref->refname);
 156                 printf("%s\t%s\n", oid_to_hex(&ref->objectname), ref->refname);
 157                 status = 0; /* we found something */
 158         }
 159
 160         ref_array_clear(&ref_array);
 161         if (transport_disconnect(transport))
 162                 status = 1;
 163         transport_ls_refs_options_release(&transport_options);
 164         return status;
 165 }