push: support pushing HEAD to real branch name
[git/git.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 [--all] [--dry-run] [--tags] [--receive-pack=<git-receive-pack>] [--repo=all] [-f | --force] [-v] [<repository> <refspec>...]",
14 NULL,
15 };
16
17 static int thin, verbose;
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 if (!strcmp("HEAD", ref)) {
48 unsigned char sha1_dummy[20];
49 ref = resolve_ref(ref, sha1_dummy, 1, NULL);
50 if (!ref)
51 die("HEAD cannot be resolved.");
52 if (prefixcmp(ref, "refs/heads/"))
53 die("HEAD cannot be resolved to branch.");
54 ref = xstrdup(ref + 11);
55 }
56 add_refspec(ref);
57 }
58 }
59
60 static int do_push(const char *repo, int flags)
61 {
62 int i, errs;
63 struct remote *remote = remote_get(repo);
64
65 if (!remote)
66 die("bad repository '%s'", repo);
67
68 if (!refspec
69 && !(flags & TRANSPORT_PUSH_ALL)
70 && remote->push_refspec_nr) {
71 refspec = remote->push_refspec;
72 refspec_nr = remote->push_refspec_nr;
73 }
74 errs = 0;
75 for (i = 0; i < remote->url_nr; i++) {
76 struct transport *transport =
77 transport_get(remote, remote->url[i]);
78 int err;
79 if (receivepack)
80 transport_set_option(transport,
81 TRANS_OPT_RECEIVEPACK, receivepack);
82 if (thin)
83 transport_set_option(transport, TRANS_OPT_THIN, "yes");
84
85 if (verbose)
86 fprintf(stderr, "Pushing to %s\n", remote->url[i]);
87 err = transport_push(transport, refspec_nr, refspec, flags);
88 err |= transport_disconnect(transport);
89
90 if (!err)
91 continue;
92
93 error("failed to push to '%s'", remote->url[i]);
94 errs++;
95 }
96 return !!errs;
97 }
98
99 int cmd_push(int argc, const char **argv, const char *prefix)
100 {
101 int flags = 0;
102 int all = 0;
103 int dry_run = 0;
104 int force = 0;
105 int tags = 0;
106 const char *repo = NULL; /* default repository */
107
108 struct option options[] = {
109 OPT__VERBOSE(&verbose),
110 OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
111 OPT_BOOLEAN( 0 , "all", &all, "push all refs"),
112 OPT_BOOLEAN( 0 , "tags", &tags, "push tags"),
113 OPT_BOOLEAN( 0 , "dry-run", &dry_run, "dry run"),
114 OPT_BOOLEAN('f', "force", &force, "force updates"),
115 OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
116 OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
117 OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
118 OPT_END()
119 };
120
121 argc = parse_options(argc, argv, options, push_usage, 0);
122
123 if (force)
124 flags |= TRANSPORT_PUSH_FORCE;
125 if (dry_run)
126 flags |= TRANSPORT_PUSH_DRY_RUN;
127 if (verbose)
128 flags |= TRANSPORT_PUSH_VERBOSE;
129 if (tags)
130 add_refspec("refs/tags/*");
131 if (all)
132 flags |= TRANSPORT_PUSH_ALL;
133
134 if (argc > 0) {
135 repo = argv[0];
136 set_refspecs(argv + 1, argc - 1);
137 }
138 if ((flags & TRANSPORT_PUSH_ALL) && refspec)
139 usage_with_options(push_usage, options);
140
141 return do_push(repo, flags);
142 }