builtin/push.c

   1 /*
   2  * "git push"
   3  */
   4 #include "cache.h"
   5 #include "refs.h"
   6 #include "run-command.h"
   7 #include "builtin.h"
   8 #include "remote.h"
   9 #include "transport.h"
  10 #include "parse-options.h"
  11 #include "submodule.h"
  12
  13 static const char * const push_usage[] = {
  14         "git push [<options>] [<repository> [<refspec>...]]",
  15         NULL,
  16 };
  17
  18 static int thin;
  19 static int deleterefs;
  20 static const char *receivepack;
  21 static int verbosity;
  22 static int progress = -1;
  23
  24 static const char **refspec;
  25 static int refspec_nr;
  26 static int refspec_alloc;
  27
  28 static void add_refspec(const char *ref)
  29 {
  30         refspec_nr++;
  31         ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
  32         refspec[refspec_nr-1] = ref;
  33 }
  34
  35 static void set_refspecs(const char **refs, int nr)
  36 {
  37         int i;
  38         for (i = 0; i < nr; i++) {
  39                 const char *ref = refs[i];
  40                 if (!strcmp("tag", ref)) {
  41                         char *tag;
  42                         int len;
  43                         if (nr <= ++i)
  44                                 die(_("tag shorthand without <tag>"));
  45                         len = strlen(refs[i]) + 11;
  46                         if (deleterefs) {
  47                                 tag = xmalloc(len+1);
  48                                 strcpy(tag, ":refs/tags/");
  49                         } else {
  50                                 tag = xmalloc(len);
  51                                 strcpy(tag, "refs/tags/");
  52                         }
  53                         strcat(tag, refs[i]);
  54                         ref = tag;
  55                 } else if (deleterefs && !strchr(ref, ':')) {
  56                         char *delref;
  57                         int len = strlen(ref)+1;
  58                         delref = xmalloc(len+1);
  59                         strcpy(delref, ":");
  60                         strcat(delref, ref);
  61                         ref = delref;
  62                 } else if (deleterefs)
  63                         die(_("--delete only accepts plain target ref names"));
  64                 add_refspec(ref);
  65         }
  66 }
  67
  68 static int push_url_of_remote(struct remote *remote, const char ***url_p)
  69 {
  70         if (remote->pushurl_nr) {
  71                 *url_p = remote->pushurl;
  72                 return remote->pushurl_nr;
  73         }
  74         *url_p = remote->url;
  75         return remote->url_nr;
  76 }
  77
  78 static void setup_push_upstream(struct remote *remote)
  79 {
  80         struct strbuf refspec = STRBUF_INIT;
  81         struct branch *branch = branch_get(NULL);
  82         if (!branch)
  83                 die(_("You are not currently on a branch.\n"
  84                     "To push the history leading to the current (detached HEAD)\n"
  85                     "state now, use\n"
  86                     "\n"
  87                     "    git push %s HEAD:<name-of-remote-branch>\n"),
  88                     remote->name);
  89         if (!branch->merge_nr || !branch->merge || !branch->remote_name)
  90                 die(_("The current branch %s has no upstream branch.\n"
  91                     "To push the current branch and set the remote as upstream, use\n"
  92                     "\n"
  93                     "    git push --set-upstream %s %s\n"),
  94                     branch->name,
  95                     remote->name,
  96                     branch->name);
  97         if (branch->merge_nr != 1)
  98                 die(_("The current branch %s has multiple upstream branches, "
  99                     "refusing to push."), branch->name);
 100         if (strcmp(branch->remote_name, remote->name))
 101                 die(_("You are pushing to remote '%s', which is not the upstream of\n"
 102                       "your current branch '%s', without telling me what to push\n"
 103                       "to update which remote branch."),
 104                     remote->name, branch->name);
 105
 106         strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
 107         add_refspec(refspec.buf);
 108 }
 109
 110 static void setup_default_push_refspecs(struct remote *remote)
 111 {
 112         switch (push_default) {
 113         default:
 114         case PUSH_DEFAULT_MATCHING:
 115                 add_refspec(":");
 116                 break;
 117
 118         case PUSH_DEFAULT_UPSTREAM:
 119                 setup_push_upstream(remote);
 120                 break;
 121
 122         case PUSH_DEFAULT_CURRENT:
 123                 add_refspec("HEAD");
 124                 break;
 125
 126         case PUSH_DEFAULT_NOTHING:
 127                 die(_("You didn't specify any refspecs to push, and "
 128                     "push.default is \"nothing\"."));
 129                 break;
 130         }
 131 }
 132
 133 static int push_with_options(struct transport *transport, int flags)
 134 {
 135         int err;
 136         int nonfastforward;
 137
 138         transport_set_verbosity(transport, verbosity, progress);
 139
 140         if (receivepack)
 141                 transport_set_option(transport,
 142                                      TRANS_OPT_RECEIVEPACK, receivepack);
 143         if (thin)
 144                 transport_set_option(transport, TRANS_OPT_THIN, "yes");
 145
 146         if (verbosity > 0)
 147                 fprintf(stderr, _("Pushing to %s\n"), transport->url);
 148         err = transport_push(transport, refspec_nr, refspec, flags,
 149                              &nonfastforward);
 150         if (err != 0)
 151                 error(_("failed to push some refs to '%s'"), transport->url);
 152
 153         err |= transport_disconnect(transport);
 154
 155         if (!err)
 156                 return 0;
 157
 158         if (nonfastforward && advice_push_nonfastforward) {
 159                 fprintf(stderr, _("To prevent you from losing history, non-fast-forward updates were rejected\n"
 160                                 "Merge the remote changes (e.g. 'git pull') before pushing again.  See the\n"
 161                                 "'Note about fast-forwards' section of 'git push --help' for details.\n"));
 162         }
 163
 164         return 1;
 165 }
 166
 167 static int do_push(const char *repo, int flags)
 168 {
 169         int i, errs;
 170         struct remote *remote = remote_get(repo);
 171         const char **url;
 172         int url_nr;
 173
 174         if (!remote) {
 175                 if (repo)
 176                         die(_("bad repository '%s'"), repo);
 177                 die(_("No configured push destination.\n"
 178                     "Either specify the URL from the command-line or configure a remote repository using\n"
 179                     "\n"
 180                     "    git remote add <name> <url>\n"
 181                     "\n"
 182                     "and then push using the remote name\n"
 183                     "\n"
 184                     "    git push <name>\n"));
 185         }
 186
 187         if (remote->mirror)
 188                 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
 189
 190         if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
 191                 if (!strcmp(*refspec, "refs/tags/*"))
 192                         return error(_("--all and --tags are incompatible"));
 193                 return error(_("--all can't be combined with refspecs"));
 194         }
 195
 196         if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
 197                 if (!strcmp(*refspec, "refs/tags/*"))
 198                         return error(_("--mirror and --tags are incompatible"));
 199                 return error(_("--mirror can't be combined with refspecs"));
 200         }
 201
 202         if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
 203                                 (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
 204                 return error(_("--all and --mirror are incompatible"));
 205         }
 206
 207         if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
 208                 if (remote->push_refspec_nr) {
 209                         refspec = remote->push_refspec;
 210                         refspec_nr = remote->push_refspec_nr;
 211                 } else if (!(flags & TRANSPORT_PUSH_MIRROR))
 212                         setup_default_push_refspecs(remote);
 213         }
 214         errs = 0;
 215         url_nr = push_url_of_remote(remote, &url);
 216         if (url_nr) {
 217                 for (i = 0; i < url_nr; i++) {
 218                         struct transport *transport =
 219                                 transport_get(remote, url[i]);
 220                         if (push_with_options(transport, flags))
 221                                 errs++;
 222                 }
 223         } else {
 224                 struct transport *transport =
 225                         transport_get(remote, NULL);
 226
 227                 if (push_with_options(transport, flags))
 228                         errs++;
 229         }
 230         return !!errs;
 231 }
 232
 233 static int option_parse_recurse_submodules(const struct option *opt,
 234                                    const char *arg, int unset)
 235 {
 236         int *flags = opt->value;
 237         if (arg) {
 238                 if (!strcmp(arg, "check"))
 239                         *flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
 240                 else
 241                         die("bad %s argument: %s", opt->long_name, arg);
 242         } else
 243                 die("option %s needs an argument (check)", opt->long_name);
 244
 245         return 0;
 246 }
 247
 248 int cmd_push(int argc, const char **argv, const char *prefix)
 249 {
 250         int flags = 0;
 251         int tags = 0;
 252         int rc;
 253         const char *repo = NULL;        /* default repository */
 254         struct option options[] = {
 255                 OPT__VERBOSITY(&verbosity),
 256                 OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
 257                 OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
 258                 OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
 259                             (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
 260                 OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
 261                 OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
 262                 OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
 263                 OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
 264                 OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
 265                 { OPTION_CALLBACK, 0, "recurse-submodules", &flags, "check",
 266                         "controls recursive pushing of submodules",
 267                         PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 268                 OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
 269                 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
 270                 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
 271                 OPT_BIT('u', "set-upstream", &flags, "set upstream for git pull/status",
 272                         TRANSPORT_PUSH_SET_UPSTREAM),
 273                 OPT_BOOL(0, "progress", &progress, "force progress reporting"),
 274                 OPT_BIT(0, "prune", &flags, "prune locally removed refs",
 275                         TRANSPORT_PUSH_PRUNE),
 276                 OPT_END()
 277         };
 278
 279         packet_trace_identity("push");
 280         git_config(git_default_config, NULL);
 281         argc = parse_options(argc, argv, prefix, options, push_usage, 0);
 282
 283         if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
 284                 die(_("--delete is incompatible with --all, --mirror and --tags"));
 285         if (deleterefs && argc < 2)
 286                 die(_("--delete doesn't make sense without any refs"));
 287
 288         if (tags)
 289                 add_refspec("refs/tags/*");
 290
 291         if (argc > 0) {
 292                 repo = argv[0];
 293                 set_refspecs(argv + 1, argc - 1);
 294         }
 295
 296         rc = do_push(repo, flags);
 297         if (rc == -1)
 298                 usage_with_options(push_usage, options);
 299         else
 300                 return rc;
 301 }