mirror of
https://github.com/git/git
synced 2024-08-25 02:35:46 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Also, make it a fatal error to pass in a non-commit object. The callers never checked, so better check here. This simplifies merge-base further. It's now so trivial that it's almost ridiculous.
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#include "cache.h"
|
|
#include "revision.h"
|
|
|
|
/*
|
|
* This is stupid. We could have much better heurstics, I bet.
|
|
*/
|
|
static int better(struct revision *new, struct revision *old)
|
|
{
|
|
return new->date > old->date;
|
|
}
|
|
|
|
static struct revision *common_parent(struct revision *rev1, struct revision *rev2)
|
|
{
|
|
int i;
|
|
struct revision *best = NULL;
|
|
|
|
mark_reachable(rev1, 1);
|
|
mark_reachable(rev2, 2);
|
|
for (i = 0; i < nr_revs ;i++) {
|
|
struct revision *rev = revs[i];
|
|
if ((rev->flags & 3) != 3)
|
|
continue;
|
|
if (!best) {
|
|
best = rev;
|
|
continue;
|
|
}
|
|
if (better(rev, best))
|
|
best = rev;
|
|
}
|
|
return best;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned char rev1[20], rev2[20];
|
|
struct revision *common;
|
|
|
|
if (argc != 3 || get_sha1_hex(argv[1], rev1) || get_sha1_hex(argv[2], rev2))
|
|
usage("merge-base <commit1> <commit2>");
|
|
|
|
/*
|
|
* We will eventually want to include a revision cache file
|
|
* that "rev-tree.c" has generated, since this is going to
|
|
* otherwise be quite expensive for big trees..
|
|
*
|
|
* That's some time off, though, and in the meantime we know
|
|
* that we have a solution to the eventual expense.
|
|
*/
|
|
common = common_parent(parse_commit(rev1), parse_commit(rev2));
|
|
if (!common)
|
|
die("no common parent found");
|
|
printf("%s\n", sha1_to_hex(common->sha1));
|
|
return 0;
|
|
}
|