static int ll_merge_in_worktree(struct notes_merge_options *o,
struct notes_merge_pair *p)
{
mmbuffer_t result_buf;
mmfile_t base, local, remote;
int status;
read_mmblob(&base, p->base);
read_mmblob(&local, p->local);
read_mmblob(&remote, p->remote);
status = ll_merge(&result_buf, sha1_to_hex(p->obj), &base, NULL,
&local, o->local_ref, &remote, o->remote_ref, NULL);
free(base.ptr);
free(local.ptr);
free(remote.ptr);
if ((status < 0) || !result_buf.ptr)
die("Failed to execute internal merge");
write_buf_to_worktree(p->obj, result_buf.ptr, result_buf.size);
free(result_buf.ptr);
return status;
}
static int merge_3way(struct merge_options *o,
mmbuffer_t *result_buf,
struct diff_filespec *one,
struct diff_filespec *a,
struct diff_filespec *b,
const char *branch1,
const char *branch2)
{
mmfile_t orig, src1, src2;
char *base_name, *name1, *name2;
int merge_status;
int favor;
if (o->call_depth)
favor = 0;
else {
switch (o->recursive_variant) {
case MERGE_RECURSIVE_OURS:
favor = XDL_MERGE_FAVOR_OURS;
break;
case MERGE_RECURSIVE_THEIRS:
favor = XDL_MERGE_FAVOR_THEIRS;
break;
default:
favor = 0;
break;
}
}
if (strcmp(a->path, b->path) ||
(o->ancestor != NULL && strcmp(a->path, one->path) != 0)) {
base_name = o->ancestor == NULL ? NULL :
xstrdup(mkpath("%s:%s", o->ancestor, one->path));
name1 = xstrdup(mkpath("%s:%s", branch1, a->path));
name2 = xstrdup(mkpath("%s:%s", branch2, b->path));
} else {
base_name = o->ancestor == NULL ? NULL :
xstrdup(mkpath("%s", o->ancestor));
name1 = xstrdup(mkpath("%s", branch1));
name2 = xstrdup(mkpath("%s", branch2));
}
read_mmblob(&orig, one->sha1);
read_mmblob(&src1, a->sha1);
read_mmblob(&src2, b->sha1);
merge_status = ll_merge(result_buf, a->path, &orig, base_name,
&src1, name1, &src2, name2,
(!!o->call_depth) | (favor << 1));
free(name1);
free(name2);
free(orig.ptr);
free(src1.ptr);
free(src2.ptr);
return merge_status;
}
static int checkout_merged(int pos, const struct checkout *state, int *nr_checkouts)
{
struct cache_entry *ce = active_cache[pos];
const char *path = ce->name;
mmfile_t ancestor, ours, theirs;
int status;
struct object_id oid;
mmbuffer_t result_buf;
struct object_id threeway[3];
unsigned mode = 0;
memset(threeway, 0, sizeof(threeway));
while (pos < active_nr) {
int stage;
stage = ce_stage(ce);
if (!stage || strcmp(path, ce->name))
break;
oidcpy(&threeway[stage - 1], &ce->oid);
if (stage == 2)
mode = create_ce_mode(ce->ce_mode);
pos++;
ce = active_cache[pos];
}
if (is_null_oid(&threeway[1]) || is_null_oid(&threeway[2]))
return error(_("path '%s' does not have necessary versions"), path);
read_mmblob(&ancestor, &threeway[0]);
read_mmblob(&ours, &threeway[1]);
read_mmblob(&theirs, &threeway[2]);
/*
* NEEDSWORK: re-create conflicts from merges with
* merge.renormalize set, too
*/
status = ll_merge(&result_buf, path, &ancestor, "base",
&ours, "ours", &theirs, "theirs",
state->istate, NULL);
free(ancestor.ptr);
free(ours.ptr);
free(theirs.ptr);
if (status < 0 || !result_buf.ptr) {
free(result_buf.ptr);
return error(_("path '%s': cannot merge"), path);
}
/*
* NEEDSWORK:
* There is absolutely no reason to write this as a blob object
* and create a phony cache entry. This hack is primarily to get
* to the write_entry() machinery that massages the contents to
* work-tree format and writes out which only allows it for a
* cache entry. The code in write_entry() needs to be refactored
* to allow us to feed a <buffer, size, mode> instead of a cache
* entry. Such a refactoring would help merge_recursive as well
* (it also writes the merge result to the object database even
* when it may contain conflicts).
*/
if (write_object_file(result_buf.ptr, result_buf.size, blob_type, &oid))
die(_("Unable to add merge result for '%s'"), path);
free(result_buf.ptr);
ce = make_transient_cache_entry(mode, &oid, path, 2);
if (!ce)
die(_("make_cache_entry failed for path '%s'"), path);
status = checkout_entry(ce, state, NULL, nr_checkouts);
discard_cache_entry(ce);
return status;
}
