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builtin-remote: add set-head subcommand

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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>
This commit is contained in:
Jay Soffian
2009-02-25 03:32:25 -05:00
committed by Junio C Hamano
parent e61e0cc6b7
commit bc14fac825
4 changed files with 129 additions and 3 deletions
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62
builtin-remote.c
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@ -12,6 +12,7 @@ static const char * const builtin_remote_usage[] = {
"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 @@ static int show(int argc, const char **argv)
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 @@ int cmd_remote(int argc, const char **argv, const char *prefix)
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"))