Detailed diagnosis when parsing an object name fails.
[gitweb.git] / builtin-push.c
index 6084899b2b58c32f85f40d7ae487dbfbac460520..356d7c1fd3a6fae9558e93eb4f240242a60da368 100644 (file)
@@ -6,10 +6,15 @@
 #include "run-command.h"
 #include "builtin.h"
 #include "remote.h"
+#include "transport.h"
+#include "parse-options.h"
 
-static const char push_usage[] = "git-push [--all] [--tags] [--receive-pack=<git-receive-pack>] [--repo=all] [-f | --force] [-v] [<repository> <refspec>...]";
+static const char * const push_usage[] = {
+       "git push [<options>] [<repository> <refspec>...]",
+       NULL,
+};
 
-static int all, tags, force, thin = 1, verbose;
+static int thin;
 static const char *receivepack;
 
 static const char **refspec;
@@ -23,191 +28,138 @@ static void add_refspec(const char *ref)
        refspec_nr = nr;
 }
 
-static int expand_one_ref(const char *ref, const unsigned char *sha1, int flag, void *cb_data)
-{
-       /* Ignore the "refs/" at the beginning of the refname */
-       ref += 5;
-
-       if (!prefixcmp(ref, "tags/"))
-               add_refspec(xstrdup(ref));
-       return 0;
-}
-
-static void expand_refspecs(void)
+static void set_refspecs(const char **refs, int nr)
 {
-       if (all) {
-               if (refspec_nr)
-                       die("cannot mix '--all' and a refspec");
-
-               /*
-                * No need to expand "--all" - we'll just use
-                * the "--all" flag to send-pack
-                */
-               return;
+       int i;
+       for (i = 0; i < nr; i++) {
+               const char *ref = refs[i];
+               if (!strcmp("tag", ref)) {
+                       char *tag;
+                       int len;
+                       if (nr <= ++i)
+                               die("tag shorthand without <tag>");
+                       len = strlen(refs[i]) + 11;
+                       tag = xmalloc(len);
+                       strcpy(tag, "refs/tags/");
+                       strcat(tag, refs[i]);
+                       ref = tag;
+               }
+               add_refspec(ref);
        }
-       if (!tags)
-               return;
-       for_each_ref(expand_one_ref, NULL);
-}
-
-struct wildcard_cb {
-       const char *from_prefix;
-       int from_prefix_len;
-       const char *to_prefix;
-       int to_prefix_len;
-       int force;
-};
-
-static int expand_wildcard_ref(const char *ref, const unsigned char *sha1, int flag, void *cb_data)
-{
-       struct wildcard_cb *cb = cb_data;
-       int len = strlen(ref);
-       char *expanded, *newref;
-
-       if (len < cb->from_prefix_len ||
-           memcmp(cb->from_prefix, ref, cb->from_prefix_len))
-               return 0;
-       expanded = xmalloc(len * 2 + cb->force +
-                          (cb->to_prefix_len - cb->from_prefix_len) + 2);
-       newref = expanded + cb->force;
-       if (cb->force)
-               expanded[0] = '+';
-       memcpy(newref, ref, len);
-       newref[len] = ':';
-       memcpy(newref + len + 1, cb->to_prefix, cb->to_prefix_len);
-       strcpy(newref + len + 1 + cb->to_prefix_len,
-              ref + cb->from_prefix_len);
-       add_refspec(expanded);
-       return 0;
 }
 
-static int wildcard_ref(const char *ref)
+static void setup_push_tracking(void)
 {
-       int len;
-       const char *colon;
-       struct wildcard_cb cb;
-
-       memset(&cb, 0, sizeof(cb));
-       if (ref[0] == '+') {
-               cb.force = 1;
-               ref++;
-       }
-       len = strlen(ref);
-       colon = strchr(ref, ':');
-       if (! (colon && ref < colon &&
-              colon[-2] == '/' && colon[-1] == '*' &&
-              /* "<mine>/<asterisk>:<yours>/<asterisk>" is at least 7 bytes */
-              7 <= len &&
-              ref[len-2] == '/' && ref[len-1] == '*') )
-               return 0 ;
-       cb.from_prefix = ref;
-       cb.from_prefix_len = colon - ref - 1;
-       cb.to_prefix = colon + 1;
-       cb.to_prefix_len = len - (colon - ref) - 2;
-       for_each_ref(expand_wildcard_ref, &cb);
-       return 1;
+       struct strbuf refspec = STRBUF_INIT;
+       struct branch *branch = branch_get(NULL);
+       if (!branch)
+               die("You are not currently on a branch.");
+       if (!branch->merge_nr)
+               die("The current branch %s is not tracking anything.",
+                   branch->name);
+       if (branch->merge_nr != 1)
+               die("The current branch %s is tracking multiple branches, "
+                   "refusing to push.", branch->name);
+       strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
+       add_refspec(refspec.buf);
 }
 
-static void set_refspecs(const char **refs, int nr)
+static void setup_default_push_refspecs(void)
 {
-       if (nr) {
-               int i;
-               for (i = 0; i < nr; i++) {
-                       const char *ref = refs[i];
-                       if (!strcmp("tag", ref)) {
-                               char *tag;
-                               int len;
-                               if (nr <= ++i)
-                                       die("tag shorthand without <tag>");
-                               len = strlen(refs[i]) + 11;
-                               tag = xmalloc(len);
-                               strcpy(tag, "refs/tags/");
-                               strcat(tag, refs[i]);
-                               ref = tag;
-                       }
-                       else if (wildcard_ref(ref))
-                               continue;
-                       add_refspec(ref);
-               }
+       switch (push_default) {
+       default:
+       case PUSH_DEFAULT_MATCHING:
+               add_refspec(":");
+               break;
+
+       case PUSH_DEFAULT_TRACKING:
+               setup_push_tracking();
+               break;
+
+       case PUSH_DEFAULT_CURRENT:
+               add_refspec("HEAD");
+               break;
+
+       case PUSH_DEFAULT_NOTHING:
+               die("You didn't specify any refspecs to push, and "
+                   "push.default is \"nothing\".");
+               break;
        }
-       expand_refspecs();
 }
 
-static int do_push(const char *repo)
+static int do_push(const char *repo, int flags)
 {
        int i, errs;
-       int common_argc;
-       const char **argv;
-       int argc;
        struct remote *remote = remote_get(repo);
+       const char **url;
+       int url_nr;
 
-       if (!remote)
-               die("bad repository '%s'", repo);
+       if (!remote) {
+               if (repo)
+                       die("bad repository '%s'", repo);
+               die("No destination configured to push to.");
+       }
 
-       if (remote->receivepack) {
-               char *rp = xmalloc(strlen(remote->receivepack) + 16);
-               sprintf(rp, "--receive-pack=%s", remote->receivepack);
-               receivepack = rp;
+       if (remote->mirror)
+               flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
+
+       if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
+               if (!strcmp(*refspec, "refs/tags/*"))
+                       return error("--all and --tags are incompatible");
+               return error("--all can't be combined with refspecs");
        }
-       if (!refspec && !all && !tags && remote->push_refspec_nr) {
-               for (i = 0; i < remote->push_refspec_nr; i++) {
-                       if (!wildcard_ref(remote->push_refspec[i]))
-                               add_refspec(remote->push_refspec[i]);
-               }
+
+       if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
+               if (!strcmp(*refspec, "refs/tags/*"))
+                       return error("--mirror and --tags are incompatible");
+               return error("--mirror can't be combined with refspecs");
        }
 
-       argv = xmalloc((refspec_nr + 10) * sizeof(char *));
-       argv[0] = "dummy-send-pack";
-       argc = 1;
-       if (all)
-               argv[argc++] = "--all";
-       if (force)
-               argv[argc++] = "--force";
-       if (receivepack)
-               argv[argc++] = receivepack;
-       common_argc = argc;
+       if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
+                               (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
+               return error("--all and --mirror are incompatible");
+       }
 
+       if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
+               if (remote->push_refspec_nr) {
+                       refspec = remote->push_refspec;
+                       refspec_nr = remote->push_refspec_nr;
+               } else if (!(flags & TRANSPORT_PUSH_MIRROR))
+                       setup_default_push_refspecs();
+       }
        errs = 0;
-       for (i = 0; i < remote->uri_nr; i++) {
+       if (remote->pushurl_nr) {
+               url = remote->pushurl;
+               url_nr = remote->pushurl_nr;
+       } else {
+               url = remote->url;
+               url_nr = remote->url_nr;
+       }
+       for (i = 0; i < url_nr; i++) {
+               struct transport *transport =
+                       transport_get(remote, url[i]);
                int err;
-               int dest_argc = common_argc;
-               int dest_refspec_nr = refspec_nr;
-               const char **dest_refspec = refspec;
-               const char *dest = remote->uri[i];
-               const char *sender = "send-pack";
-               if (!prefixcmp(dest, "http://") ||
-                   !prefixcmp(dest, "https://"))
-                       sender = "http-push";
-               else {
-                       char *rem = xmalloc(strlen(remote->name) + 10);
-                       sprintf(rem, "--remote=%s", remote->name);
-                       argv[dest_argc++] = rem;
-                       if (thin)
-                               argv[dest_argc++] = "--thin";
-               }
-               argv[0] = sender;
-               argv[dest_argc++] = dest;
-               while (dest_refspec_nr--)
-                       argv[dest_argc++] = *dest_refspec++;
-               argv[dest_argc] = NULL;
-               if (verbose)
-                       fprintf(stderr, "Pushing to %s\n", dest);
-               err = run_command_v_opt(argv, RUN_GIT_CMD);
+               int nonfastforward;
+               if (receivepack)
+                       transport_set_option(transport,
+                                            TRANS_OPT_RECEIVEPACK, receivepack);
+               if (thin)
+                       transport_set_option(transport, TRANS_OPT_THIN, "yes");
+
+               if (flags & TRANSPORT_PUSH_VERBOSE)
+                       fprintf(stderr, "Pushing to %s\n", url[i]);
+               err = transport_push(transport, refspec_nr, refspec, flags,
+                                    &nonfastforward);
+               err |= transport_disconnect(transport);
+
                if (!err)
                        continue;
 
-               error("failed to push to '%s'", remote->uri[i]);
-               switch (err) {
-               case -ERR_RUN_COMMAND_FORK:
-                       error("unable to fork for %s", sender);
-               case -ERR_RUN_COMMAND_EXEC:
-                       error("unable to exec %s", sender);
-                       break;
-               case -ERR_RUN_COMMAND_WAITPID:
-               case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
-               case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
-               case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
-                       error("%s died with strange error", sender);
+               error("failed to push some refs to '%s'", url[i]);
+               if (nonfastforward && advice_push_nonfastforward) {
+                       printf("To prevent you from losing history, non-fast-forward updates were rejected\n"
+                              "Merge the remote changes before pushing again.  See the 'non-fast-forward'\n"
+                              "section of 'git push --help' for details.\n");
                }
                errs++;
        }
@@ -216,55 +168,41 @@ static int do_push(const char *repo)
 
 int cmd_push(int argc, const char **argv, const char *prefix)
 {
-       int i;
+       int flags = 0;
+       int tags = 0;
+       int rc;
        const char *repo = NULL;        /* default repository */
-
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
-
-               if (arg[0] != '-') {
-                       repo = arg;
-                       i++;
-                       break;
-               }
-               if (!strcmp(arg, "-v")) {
-                       verbose=1;
-                       continue;
-               }
-               if (!prefixcmp(arg, "--repo=")) {
-                       repo = arg+7;
-                       continue;
-               }
-               if (!strcmp(arg, "--all")) {
-                       all = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--tags")) {
-                       tags = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--force") || !strcmp(arg, "-f")) {
-                       force = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--thin")) {
-                       thin = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--no-thin")) {
-                       thin = 0;
-                       continue;
-               }
-               if (!prefixcmp(arg, "--receive-pack=")) {
-                       receivepack = arg;
-                       continue;
-               }
-               if (!prefixcmp(arg, "--exec=")) {
-                       receivepack = arg;
-                       continue;
-               }
-               usage(push_usage);
+       struct option options[] = {
+               OPT_BIT('q', "quiet", &flags, "be quiet", TRANSPORT_PUSH_QUIET),
+               OPT_BIT('v', "verbose", &flags, "be verbose", TRANSPORT_PUSH_VERBOSE),
+               OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
+               OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
+               OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
+                           (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
+               OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
+               OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
+               OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
+               OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
+               OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
+               OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
+               OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
+               OPT_END()
+       };
+
+       git_config(git_default_config, NULL);
+       argc = parse_options(argc, argv, prefix, options, push_usage, 0);
+
+       if (tags)
+               add_refspec("refs/tags/*");
+
+       if (argc > 0) {
+               repo = argv[0];
+               set_refspecs(argv + 1, argc - 1);
        }
-       set_refspecs(argv + i, argc - i);
-       return do_push(repo);
+
+       rc = do_push(repo, flags);
+       if (rc == -1)
+               usage_with_options(push_usage, options);
+       else
+               return rc;
 }