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