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-rw-r--r--builtin-merge-base.c43
1 files changed, 23 insertions, 20 deletions
diff --git a/builtin-merge-base.c b/builtin-merge-base.c
index 3382b13..03fc1c2 100644
--- a/builtin-merge-base.c
+++ b/builtin-merge-base.c
@@ -1,10 +1,13 @@
#include "builtin.h"
#include "cache.h"
#include "commit.h"
+#include "parse-options.h"
-static int show_merge_base(struct commit *rev1, struct commit *rev2, int show_all)
+static int show_merge_base(struct commit **rev, int rev_nr, int show_all)
{
- struct commit_list *result = get_merge_bases(rev1, rev2, 0);
+ struct commit_list *result;
+
+ result = get_merge_bases_many(rev[0], rev_nr - 1, rev + 1, 0);
if (!result)
return 1;
@@ -19,8 +22,10 @@ static int show_merge_base(struct commit *rev1, struct commit *rev2, int show_al
return 0;
}
-static const char merge_base_usage[] =
-"git merge-base [--all] <commit-id> <commit-id>";
+static const char * const merge_base_usage[] = {
+ "git merge-base [--all] <commit-id> <commit-id>...",
+ NULL
+};
static struct commit *get_commit_reference(const char *arg)
{
@@ -38,23 +43,21 @@ static struct commit *get_commit_reference(const char *arg)
int cmd_merge_base(int argc, const char **argv, const char *prefix)
{
- struct commit *rev1, *rev2;
+ struct commit **rev;
+ int rev_nr = 0;
int show_all = 0;
- git_config(git_default_config, NULL);
+ struct option options[] = {
+ OPT_BOOLEAN('a', "all", &show_all, "outputs all common ancestors"),
+ OPT_END()
+ };
- while (1 < argc && argv[1][0] == '-') {
- const char *arg = argv[1];
- if (!strcmp(arg, "-a") || !strcmp(arg, "--all"))
- show_all = 1;
- else
- usage(merge_base_usage);
- argc--; argv++;
- }
- if (argc != 3)
- usage(merge_base_usage);
- rev1 = get_commit_reference(argv[1]);
- rev2 = get_commit_reference(argv[2]);
-
- return show_merge_base(rev1, rev2, show_all);
+ git_config(git_default_config, NULL);
+ argc = parse_options(argc, argv, options, merge_base_usage, 0);
+ if (argc < 2)
+ usage_with_options(merge_base_usage, options);
+ rev = xmalloc(argc * sizeof(*rev));
+ while (argc-- > 0)
+ rev[rev_nr++] = get_commit_reference(*argv++);
+ return show_merge_base(rev, rev_nr, show_all);
}