builtin-remote: add set-head subcommand
Provide a porcelain command for setting and deleting
$GIT_DIR/remotes/<remote>/HEAD.
While we're at it, document what $GIT_DIR/remotes/<remote>/HEAD is all
about.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-remote.c b/builtin-remote.c
index 4543cf0..640e4da 100644
--- a/builtin-remote.c
+++ b/builtin-remote.c
@@ -12,6 +12,7 @@
"git remote add [-t <branch>] [-m <master>] [-f] [--mirror] <name> <url>",
"git remote rename <old> <new>",
"git remote rm <name>",
+ "git remote set-head <name> [-a | -d | <branch>]",
"git remote show [-n] <name>",
"git remote prune [-n | --dry-run] <name>",
"git remote [-v | --verbose] update [group]",
@@ -792,6 +793,65 @@
return result;
}
+static int set_head(int argc, const char **argv)
+{
+ int i, opt_a = 0, opt_d = 0, result = 0;
+ struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
+ char *head_name = NULL;
+
+ struct option options[] = {
+ OPT_GROUP("set-head specific options"),
+ OPT_BOOLEAN('a', "auto", &opt_a,
+ "set refs/remotes/<name>/HEAD according to remote"),
+ OPT_BOOLEAN('d', "delete", &opt_d,
+ "delete refs/remotes/<name>/HEAD"),
+ OPT_END()
+ };
+ argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
+ if (argc)
+ strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
+
+ if (!opt_a && !opt_d && argc == 2) {
+ head_name = xstrdup(argv[1]);
+ } else if (opt_a && !opt_d && argc == 1) {
+ struct ref_states states;
+ memset(&states, 0, sizeof(states));
+ get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
+ if (!states.heads.nr)
+ result |= error("Cannot determine remote HEAD");
+ else if (states.heads.nr > 1) {
+ result |= error("Multiple remote HEAD branches. "
+ "Please choose one explicitly with:");
+ for (i = 0; i < states.heads.nr; i++)
+ fprintf(stderr, " git remote set-head %s %s\n",
+ argv[0], states.heads.items[i].string);
+ } else
+ head_name = xstrdup(states.heads.items[0].string);
+ free_remote_ref_states(&states);
+ } else if (opt_d && !opt_a && argc == 1) {
+ if (delete_ref(buf.buf, NULL, REF_NODEREF))
+ result |= error("Could not delete %s", buf.buf);
+ } else
+ usage_with_options(builtin_remote_usage, options);
+
+ if (head_name) {
+ unsigned char sha1[20];
+ strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
+ /* make sure it's valid */
+ if (!resolve_ref(buf2.buf, sha1, 1, NULL))
+ result |= error("Not a valid ref: %s", buf2.buf);
+ else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
+ result |= error("Could not setup %s", buf.buf);
+ if (opt_a)
+ printf("%s/HEAD set to %s\n", argv[0], head_name);
+ free(head_name);
+ }
+
+ strbuf_release(&buf);
+ strbuf_release(&buf2);
+ return result;
+}
+
static int prune(int argc, const char **argv)
{
int dry_run = 0, result = 0;
@@ -962,6 +1022,8 @@
result = mv(argc, argv);
else if (!strcmp(argv[0], "rm"))
result = rm(argc, argv);
+ else if (!strcmp(argv[0], "set-head"))
+ result = set_head(argc, argv);
else if (!strcmp(argv[0], "show"))
result = show(argc, argv);
else if (!strcmp(argv[0], "prune"))
