Merge branch 'jp/fetch-tag-match'
[git] / 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 [<options>] [<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         default:
72         case PUSH_DEFAULT_MATCHING:
73                 add_refspec(":");
74                 break;
75
76         case PUSH_DEFAULT_TRACKING:
77                 setup_push_tracking();
78                 break;
79
80         case PUSH_DEFAULT_CURRENT:
81                 add_refspec("HEAD");
82                 break;
83
84         case PUSH_DEFAULT_NOTHING:
85                 die("You didn't specify any refspecs to push, and "
86                     "push.default is \"nothing\".");
87                 break;
88         }
89 }
90
91 static int do_push(const char *repo, int flags)
92 {
93         int i, errs;
94         struct remote *remote = remote_get(repo);
95         const char **url;
96         int url_nr;
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         if (remote->pushurl_nr) {
133                 url = remote->pushurl;
134                 url_nr = remote->pushurl_nr;
135         } else {
136                 url = remote->url;
137                 url_nr = remote->url_nr;
138         }
139         for (i = 0; i < url_nr; i++) {
140                 struct transport *transport =
141                         transport_get(remote, url[i]);
142                 int err;
143                 int nonfastforward;
144                 if (receivepack)
145                         transport_set_option(transport,
146                                              TRANS_OPT_RECEIVEPACK, receivepack);
147                 if (thin)
148                         transport_set_option(transport, TRANS_OPT_THIN, "yes");
149
150                 if (flags & TRANSPORT_PUSH_VERBOSE)
151                         fprintf(stderr, "Pushing to %s\n", url[i]);
152                 err = transport_push(transport, refspec_nr, refspec, flags,
153                                      &nonfastforward);
154                 err |= transport_disconnect(transport);
155
156                 if (!err)
157                         continue;
158
159                 error("failed to push some refs to '%s'", url[i]);
160                 if (nonfastforward && advice_push_nonfastforward) {
161                         printf("To prevent you from losing history, non-fast-forward updates were rejected\n"
162                                "Merge the remote changes before pushing again.  See the 'non-fast forward'\n"
163                                "section of 'git push --help' for details.\n");
164                 }
165                 errs++;
166         }
167         return !!errs;
168 }
169
170 int cmd_push(int argc, const char **argv, const char *prefix)
171 {
172         int flags = 0;
173         int tags = 0;
174         int rc;
175         const char *repo = NULL;        /* default repository */
176
177         struct option options[] = {
178                 OPT_BIT('q', "quiet", &flags, "be quiet", TRANSPORT_PUSH_QUIET),
179                 OPT_BIT('v', "verbose", &flags, "be verbose", TRANSPORT_PUSH_VERBOSE),
180                 OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
181                 OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
182                 OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
183                             (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
184                 OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror"),
185                 OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
186                 OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
187                 OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
188                 OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
189                 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
190                 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
191                 OPT_END()
192         };
193
194         argc = parse_options(argc, argv, prefix, options, push_usage, 0);
195
196         if (tags)
197                 add_refspec("refs/tags/*");
198
199         if (argc > 0) {
200                 repo = argv[0];
201                 set_refspecs(argv + 1, argc - 1);
202         }
203
204         rc = do_push(repo, flags);
205         if (rc == -1)
206                 usage_with_options(push_usage, options);
207         else
208                 return rc;
209 }