builtin/ls-remote.c

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