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
  12 static const char * const push_usage[] = {
  13         "git push [--all | --mirror] [--dry-run] [--tags] [--receive-pack=<git-receive-pack>] [--repo=<repository>] [-f | --force] [-v] [<repository> <refspec>...]",
  14         NULL,
  15 };
  16
  17 static int thin;
  18 static const char *receivepack;
  19
  20 static const char **refspec;
  21 static int refspec_nr;
  22
  23 static void add_refspec(const char *ref)
  24 {
  25         int nr = refspec_nr + 1;
  26         refspec = xrealloc(refspec, nr * sizeof(char *));
  27         refspec[nr-1] = ref;
  28         refspec_nr = nr;
  29 }
  30
  31 static void set_refspecs(const char **refs, int nr)
  32 {
  33         int i;
  34         for (i = 0; i < nr; i++) {
  35                 const char *ref = refs[i];
  36                 if (!strcmp("tag", ref)) {
  37                         char *tag;
  38                         int len;
  39                         if (nr <= ++i)
  40                                 die("tag shorthand without <tag>");
  41                         len = strlen(refs[i]) + 11;
  42                         tag = xmalloc(len);
  43                         strcpy(tag, "refs/tags/");
  44                         strcat(tag, refs[i]);
  45                         ref = tag;
  46                 }
  47                 add_refspec(ref);
  48         }
  49 }
  50
  51 static void setup_push_tracking(void)
  52 {
  53         struct strbuf refspec = STRBUF_INIT;
  54         struct branch *branch = branch_get(NULL);
  55         if (!branch)
  56                 die("You are not currently on a branch.");
  57         if (!branch->merge_nr)
  58                 die("The current branch %s is not tracking anything.",
  59                     branch->name);
  60         if (branch->merge_nr != 1)
  61                 die("The current branch %s is tracking multiple branches, "
  62                     "refusing to push.", branch->name);
  63         strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
  64         add_refspec(refspec.buf);
  65 }
  66
  67 static void setup_default_push_refspecs(void)
  68 {
  69         git_config(git_default_config, NULL);
  70         switch (push_default) {
  71         case PUSH_DEFAULT_UNSPECIFIED:
  72                 /* fallthrough */
  73
  74         case PUSH_DEFAULT_MATCHING:
  75                 add_refspec(":");
  76                 break;
  77
  78         case PUSH_DEFAULT_TRACKING:
  79                 setup_push_tracking();
  80                 break;
  81
  82         case PUSH_DEFAULT_CURRENT:
  83                 add_refspec("HEAD");
  84                 break;
  85
  86         case PUSH_DEFAULT_NOTHING:
  87                 die("You didn't specify any refspecs to push, and "
  88                     "push.default is \"nothing\".");
  89                 break;
  90         }
  91 }
  92
  93 static int do_push(const char *repo, int flags)
  94 {
  95         int i, errs;
  96         struct remote *remote = remote_get(repo);
  97
  98         if (!remote) {
  99                 if (repo)
 100                         die("bad repository '%s'", repo);
 101                 die("No destination configured to push to.");
 102         }
 103
 104         if (remote->mirror)
 105                 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
 106
 107         if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
 108                 if (!strcmp(*refspec, "refs/tags/*"))
 109                         return error("--all and --tags are incompatible");
 110                 return error("--all can't be combined with refspecs");
 111         }
 112
 113         if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
 114                 if (!strcmp(*refspec, "refs/tags/*"))
 115                         return error("--mirror and --tags are incompatible");
 116                 return error("--mirror can't be combined with refspecs");
 117         }
 118
 119         if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
 120                                 (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
 121                 return error("--all and --mirror are incompatible");
 122         }
 123
 124         if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
 125                 if (remote->push_refspec_nr) {
 126                         refspec = remote->push_refspec;
 127                         refspec_nr = remote->push_refspec_nr;
 128                 } else if (!(flags & TRANSPORT_PUSH_MIRROR))
 129                         setup_default_push_refspecs();
 130         }
 131         errs = 0;
 132         for (i = 0; i < remote->url_nr; i++) {
 133                 struct transport *transport =
 134                         transport_get(remote, remote->url[i]);
 135                 int err;
 136                 if (receivepack)
 137                         transport_set_option(transport,
 138                                              TRANS_OPT_RECEIVEPACK, receivepack);
 139                 if (thin)
 140                         transport_set_option(transport, TRANS_OPT_THIN, "yes");
 141
 142                 if (flags & TRANSPORT_PUSH_VERBOSE)
 143                         fprintf(stderr, "Pushing to %s\n", remote->url[i]);
 144                 err = transport_push(transport, refspec_nr, refspec, flags);
 145                 err |= transport_disconnect(transport);
 146
 147                 if (!err)
 148                         continue;
 149
 150                 error("failed to push some refs to '%s'", remote->url[i]);
 151                 errs++;
 152         }
 153         return !!errs;
 154 }
 155
 156 int cmd_push(int argc, const char **argv, const char *prefix)
 157 {
 158         int flags = 0;
 159         int tags = 0;
 160         int rc;
 161         const char *repo = NULL;        /* default repository */
 162
 163         struct option options[] = {
 164                 OPT_BIT('v', "verbose", &flags, "be verbose", TRANSPORT_PUSH_VERBOSE),
 165                 OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
 166                 OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
 167                 OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
 168                             (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
 169                 OPT_BOOLEAN( 0 , "tags", &tags, "push tags"),
 170                 OPT_BIT( 0 , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
 171                 OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
 172                 OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
 173                 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
 174                 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
 175                 OPT_END()
 176         };
 177
 178         argc = parse_options(argc, argv, options, push_usage, 0);
 179
 180         if (tags)
 181                 add_refspec("refs/tags/*");
 182
 183         if (argc > 0) {
 184                 repo = argv[0];
 185                 set_refspecs(argv + 1, argc - 1);
 186         }
 187
 188         rc = do_push(repo, flags);
 189         if (rc == -1)
 190                 usage_with_options(push_usage, options);
 191         else
 192                 return rc;
 193 }