Windows: boost startup by avoiding a static dependency on shell32.dll
[git/dscho.git] / builtin-push.c
blob28a26e7db2a86bf1514cdd54f9735c0be146dce7
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"
12 static const char * const push_usage[] = {
13         "git push [<options>] [<repository> <refspec>...]",
14         NULL,
17 static int thin;
18 static int deleterefs;
19 static const char *receivepack;
21 static const char **refspec;
22 static int refspec_nr;
24 static void add_refspec(const char *ref)
26         int nr = refspec_nr + 1;
27         refspec = xrealloc(refspec, nr * sizeof(char *));
28         refspec[nr-1] = ref;
29         refspec_nr = nr;
32 static void set_refspecs(const char **refs, int nr)
34         int i;
35         for (i = 0; i < nr; i++) {
36                 const char *ref = refs[i];
37                 if (!strcmp("tag", ref)) {
38                         char *tag;
39                         int len;
40                         if (nr <= ++i)
41                                 die("tag shorthand without <tag>");
42                         len = strlen(refs[i]) + 11;
43                         if (deleterefs) {
44                                 tag = xmalloc(len+1);
45                                 strcpy(tag, ":refs/tags/");
46                         } else {
47                                 tag = xmalloc(len);
48                                 strcpy(tag, "refs/tags/");
49                         }
50                         strcat(tag, refs[i]);
51                         ref = tag;
52                 } else if (deleterefs && !strchr(ref, ':')) {
53                         char *delref;
54                         int len = strlen(ref)+1;
55                         delref = xmalloc(len);
56                         strcpy(delref, ":");
57                         strcat(delref, ref);
58                         ref = delref;
59                 } else if (deleterefs)
60                         die("--delete only accepts plain target ref names");
61                 add_refspec(ref);
62         }
65 static void setup_push_tracking(void)
67         struct strbuf refspec = STRBUF_INIT;
68         struct branch *branch = branch_get(NULL);
69         if (!branch)
70                 die("You are not currently on a branch.");
71         if (!branch->merge_nr)
72                 die("The current branch %s is not tracking anything.",
73                     branch->name);
74         if (branch->merge_nr != 1)
75                 die("The current branch %s is tracking multiple branches, "
76                     "refusing to push.", branch->name);
77         strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
78         add_refspec(refspec.buf);
81 static void setup_default_push_refspecs(void)
83         switch (push_default) {
84         default:
85         case PUSH_DEFAULT_MATCHING:
86                 add_refspec(":");
87                 break;
89         case PUSH_DEFAULT_TRACKING:
90                 setup_push_tracking();
91                 break;
93         case PUSH_DEFAULT_CURRENT:
94                 add_refspec("HEAD");
95                 break;
97         case PUSH_DEFAULT_NOTHING:
98                 die("You didn't specify any refspecs to push, and "
99                     "push.default is \"nothing\".");
100                 break;
101         }
104 static int push_with_options(struct transport *transport, int flags)
106         int err;
107         int nonfastforward;
108         if (receivepack)
109                 transport_set_option(transport,
110                                      TRANS_OPT_RECEIVEPACK, receivepack);
111         if (thin)
112                 transport_set_option(transport, TRANS_OPT_THIN, "yes");
114         if (flags & TRANSPORT_PUSH_VERBOSE)
115                 fprintf(stderr, "Pushing to %s\n", transport->url);
116         err = transport_push(transport, refspec_nr, refspec, flags,
117                              &nonfastforward);
118         if (err != 0)
119                 error("failed to push some refs to '%s'", transport->url);
121         err |= transport_disconnect(transport);
123         if (!err)
124                 return 0;
126         if (nonfastforward && advice_push_nonfastforward) {
127                 printf("To prevent you from losing history, non-fast-forward updates were rejected\n"
128                        "Merge the remote changes before pushing again.  See the 'Note about\n"
129                        "fast-forwards' section of 'git push --help' for details.\n");
130         }
132         return 1;
135 static int do_push(const char *repo, int flags)
137         int i, errs;
138         struct remote *remote = remote_get(repo);
139         const char **url;
140         int url_nr;
142         if (!remote) {
143                 if (repo)
144                         die("bad repository '%s'", repo);
145                 die("No destination configured to push to.");
146         }
148         if (remote->mirror)
149                 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
151         if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
152                 if (!strcmp(*refspec, "refs/tags/*"))
153                         return error("--all and --tags are incompatible");
154                 return error("--all can't be combined with refspecs");
155         }
157         if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
158                 if (!strcmp(*refspec, "refs/tags/*"))
159                         return error("--mirror and --tags are incompatible");
160                 return error("--mirror can't be combined with refspecs");
161         }
163         if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
164                                 (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
165                 return error("--all and --mirror are incompatible");
166         }
168         if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
169                 if (remote->push_refspec_nr) {
170                         refspec = remote->push_refspec;
171                         refspec_nr = remote->push_refspec_nr;
172                 } else if (!(flags & TRANSPORT_PUSH_MIRROR))
173                         setup_default_push_refspecs();
174         }
175         errs = 0;
176         if (remote->pushurl_nr) {
177                 url = remote->pushurl;
178                 url_nr = remote->pushurl_nr;
179         } else {
180                 url = remote->url;
181                 url_nr = remote->url_nr;
182         }
183         if (url_nr) {
184                 for (i = 0; i < url_nr; i++) {
185                         struct transport *transport =
186                                 transport_get(remote, url[i]);
187                         if (push_with_options(transport, flags))
188                                 errs++;
189                 }
190         } else {
191                 struct transport *transport =
192                         transport_get(remote, NULL);
194                 if (push_with_options(transport, flags))
195                         errs++;
196         }
197         return !!errs;
200 int cmd_push(int argc, const char **argv, const char *prefix)
202         int flags = 0;
203         int tags = 0;
204         int rc;
205         const char *repo = NULL;        /* default repository */
206         struct option options[] = {
207                 OPT_BIT('q', "quiet", &flags, "be quiet", TRANSPORT_PUSH_QUIET),
208                 OPT_BIT('v', "verbose", &flags, "be verbose", TRANSPORT_PUSH_VERBOSE),
209                 OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
210                 OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
211                 OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
212                             (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
213                 OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
214                 OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
215                 OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
216                 OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
217                 OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
218                 OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
219                 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
220                 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
221                 OPT_END()
222         };
224         git_config(git_default_config, NULL);
225         argc = parse_options(argc, argv, prefix, options, push_usage, 0);
227         if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
228                 die("--delete is incompatible with --all, --mirror and --tags");
229         if (deleterefs && argc < 2)
230                 die("--delete doesn't make sense without any refs");
232         if (tags)
233                 add_refspec("refs/tags/*");
235         if (argc > 0) {
236                 repo = argv[0];
237                 set_refspecs(argv + 1, argc - 1);
238         }
240         rc = do_push(repo, flags);
241         if (rc == -1)
242                 usage_with_options(push_usage, options);
243         else
244                 return rc;