Andrew's git / gitweb.git / builtin/push.c
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builtin / push.con commit Documentation/CodingGuidelines: spell out more shell guidelines (03b05c7)
   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
  13static const char * const push_usage[] = {
  14        "git push [<options>] [<repository> [<refspec>...]]",
  15        NULL,
  16};
  17
  18static int thin;
  19static int deleterefs;
  20static const char *receivepack;
  21static int verbosity;
  22static int progress = -1;
  23
  24static const char **refspec;
  25static int refspec_nr;
  26static int refspec_alloc;
  27
  28static 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
  35static 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
  68static 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
  94static 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
 117static 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
 151static 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
 223static int option_parse_recurse_submodules(const struct option *opt,
 224                                   const char *arg, int unset)
 225{
 226        int *flags = opt->value;
 227        if (arg) {
 228                if (!strcmp(arg, "check"))
 229                        *flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
 230                else
 231                        die("bad %s argument: %s", opt->long_name, arg);
 232        } else
 233                die("option %s needs an argument (check)", opt->long_name);
 234
 235        return 0;
 236}
 237
 238int cmd_push(int argc, const char **argv, const char *prefix)
 239{
 240        int flags = 0;
 241        int tags = 0;
 242        int rc;
 243        const char *repo = NULL;        /* default repository */
 244        struct option options[] = {
 245                OPT__VERBOSITY(&verbosity),
 246                OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
 247                OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
 248                OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
 249                            (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
 250                OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
 251                OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
 252                OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
 253                OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
 254                OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
 255                { OPTION_CALLBACK, 0, "recurse-submodules", &flags, "check",
 256                        "controls recursive pushing of submodules",
 257                        PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 258                OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
 259                OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
 260                OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
 261                OPT_BIT('u', "set-upstream", &flags, "set upstream for git pull/status",
 262                        TRANSPORT_PUSH_SET_UPSTREAM),
 263                OPT_BOOL(0, "progress", &progress, "force progress reporting"),
 264                OPT_END()
 265        };
 266
 267        packet_trace_identity("push");
 268        git_config(git_default_config, NULL);
 269        argc = parse_options(argc, argv, prefix, options, push_usage, 0);
 270
 271        if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
 272                die(_("--delete is incompatible with --all, --mirror and --tags"));
 273        if (deleterefs && argc < 2)
 274                die(_("--delete doesn't make sense without any refs"));
 275
 276        if (tags)
 277                add_refspec("refs/tags/*");
 278
 279        if (argc > 0) {
 280                repo = argv[0];
 281                set_refspecs(argv + 1, argc - 1);
 282        }
 283
 284        rc = do_push(repo, flags);
 285        if (rc == -1)
 286                usage_with_options(push_usage, options);
 287        else
 288                return rc;
 289}