#include "cache.h"
#include "commit.h"
#include "tag.h"
#include "merge-recursive.h"
static const char *better_branch_name(const char *branch)
{
static char githead_env[8 + 40 + 1];
char *name;
if (strlen(branch) != 40)
return branch;
sprintf(githead_env, "GITHEAD_%s", branch);
name = getenv(githead_env);
return name ? name : branch;
}
int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
{
const unsigned char *bases[21];
unsigned bases_count = 0;
int i, failed;
unsigned char h1[20], h2[20];
struct merge_options o;
struct commit *result;
init_merge_options(&o);
if (argv[0]) {
int namelen = strlen(argv[0]);
if (8 < namelen &&
!strcmp(argv[0] + namelen - 8, "-subtree"))
o.subtree_merge = 1;
}
if (argc < 4)
die("Usage: %s ... -- ...", argv[0]);
for (i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "--"))
break;
if (bases_count < ARRAY_SIZE(bases)-1) {
unsigned char *sha = xmalloc(20);
if (get_sha1(argv[i], sha))
die("Could not parse object '%s'", argv[i]);
bases[bases_count++] = sha;
}
else
warning("Cannot handle more than %d bases. "
"Ignoring %s.",
(int)ARRAY_SIZE(bases)-1, argv[i]);
}
if (argc - i != 3) /* "--" "" "" */
die("Not handling anything other than two heads merge.");
o.branch1 = argv[++i];
o.branch2 = argv[++i];
if (get_sha1(o.branch1, h1))
die("Could not resolve ref '%s'", o.branch1);
if (get_sha1(o.branch2, h2))
die("Could not resolve ref '%s'", o.branch2);
o.branch1 = better_branch_name(o.branch1);
o.branch2 = better_branch_name(o.branch2);
if (o.verbosity >= 3)
printf("Merging %s with %s\n", o.branch1, o.branch2);
failed = merge_recursive_generic(&o, h1, h2, bases_count, bases, &result);
if (failed < 0)
return 128; /* die() error code */
return failed;
}