builtin-mailinfo.c: check error status from rewind and ftruncate
[git/spearce.git] / builtin-push.c
blob3cb1ee46d1da898c2be5666a93002ca43df80093
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 [--all | --mirror] [-n | --dry-run] [--porcelain] [--tags] [--receive-pack=<git-receive-pack>] [--repo=<repository>] [-f | --force] [-v] [<repository> <refspec>...]",
14 NULL,
17 static int thin;
18 static const char *receivepack;
20 static const char **refspec;
21 static int refspec_nr;
23 static void add_refspec(const char *ref)
25 int nr = refspec_nr + 1;
26 refspec = xrealloc(refspec, nr * sizeof(char *));
27 refspec[nr-1] = ref;
28 refspec_nr = nr;
31 static void set_refspecs(const char **refs, int nr)
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;
47 add_refspec(ref);
51 static void setup_push_tracking(void)
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);
67 static void setup_default_push_refspecs(void)
69 git_config(git_default_config, NULL);
70 switch (push_default) {
71 default:
72 case PUSH_DEFAULT_MATCHING:
73 add_refspec(":");
74 break;
76 case PUSH_DEFAULT_TRACKING:
77 setup_push_tracking();
78 break;
80 case PUSH_DEFAULT_CURRENT:
81 add_refspec("HEAD");
82 break;
84 case PUSH_DEFAULT_NOTHING:
85 die("You didn't specify any refspecs to push, and "
86 "push.default is \"nothing\".");
87 break;
91 static int do_push(const char *repo, int flags)
93 int i, errs;
94 struct remote *remote = remote_get(repo);
95 const char **url;
96 int url_nr;
98 if (!remote) {
99 if (repo)
100 die("bad repository '%s'", repo);
101 die("No destination configured to push to.");
104 if (remote->mirror)
105 flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
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");
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");
119 if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
120 (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
121 return error("--all and --mirror are incompatible");
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();
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;
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");
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);
156 if (!err)
157 continue;
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");
165 errs++;
167 return !!errs;
170 int cmd_push(int argc, const char **argv, const char *prefix)
172 int flags = 0;
173 int tags = 0;
174 int rc;
175 const char *repo = NULL; /* default repository */
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"),
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()
194 argc = parse_options(argc, argv, prefix, options, push_usage, 0);
196 if (tags)
197 add_refspec("refs/tags/*");
199 if (argc > 0) {
200 repo = argv[0];
201 set_refspecs(argv + 1, argc - 1);
204 rc = do_push(repo, flags);
205 if (rc == -1)
206 usage_with_options(push_usage, options);
207 else
208 return rc;