[thirdparty/git.git] / builtin / merge-recursive.c

#include "builtin.h"
#include "advice.h"
#include "gettext.h"
#include "hash.h"
#include "merge-recursive.h"
#include "object-name.h"
#include "repository.h"

static const char builtin_merge_recursive_usage[] =
	"git %s <base>... -- <head> <remote> ...";

static char *better_branch_name(const char *branch)
{
	static char githead_env[8 + GIT_MAX_HEXSZ + 1];
	char *name;

	if (strlen(branch) != the_hash_algo->hexsz)
		return xstrdup(branch);
	xsnprintf(githead_env, sizeof(githead_env), "GITHEAD_%s", branch);
	name = getenv(githead_env);
	return xstrdup(name ? name : branch);
}

int cmd_merge_recursive(int argc, const char **argv, const char *prefix UNUSED)
{
	const struct object_id *bases[21];
	unsigned bases_count = 0;
	int i, failed;
	struct object_id h1, h2;
	struct merge_options o;
	char *better1, *better2;
	struct commit *result;

	init_merge_options(&o, the_repository);
	if (argv[0] && ends_with(argv[0], "-subtree"))
		o.subtree_shift = "";

	if (argc < 4)
		usagef(builtin_merge_recursive_usage, argv[0]);

	for (i = 1; i < argc; ++i) {
		const char *arg = argv[i];

		if (starts_with(arg, "--")) {
			if (!arg[2])
				break;
			if (parse_merge_opt(&o, arg + 2))
				die(_("unknown option %s"), arg);
			continue;
		}
		if (bases_count < ARRAY_SIZE(bases)-1) {
			struct object_id *oid = xmalloc(sizeof(struct object_id));
			if (repo_get_oid(the_repository, argv[i], oid))
				die(_("could not parse object '%s'"), argv[i]);
			bases[bases_count++] = oid;
		}
		else
			warning(Q_("cannot handle more than %d base. "
				   "Ignoring %s.",
				   "cannot handle more than %d bases. "
				   "Ignoring %s.",
				    ARRAY_SIZE(bases)-1),
				(int)ARRAY_SIZE(bases)-1, argv[i]);
	}
	if (argc - i != 3) /* "--" "<head>" "<remote>" */
		die(_("not handling anything other than two heads merge."));

	if (repo_read_index_unmerged(the_repository))
		die_resolve_conflict("merge");

	o.branch1 = argv[++i];
	o.branch2 = argv[++i];

	if (repo_get_oid(the_repository, o.branch1, &h1))
		die(_("could not resolve ref '%s'"), o.branch1);
	if (repo_get_oid(the_repository, o.branch2, &h2))
		die(_("could not resolve ref '%s'"), o.branch2);

	o.branch1 = better1 = better_branch_name(o.branch1);
	o.branch2 = better2 = 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);

	free(better1);
	free(better2);

	if (failed < 0)
		return 128; /* die() error code */
	return failed;
}
Commit	Line	Data
c2e86add	1	#include "builtin.h"
6c6ddf92	2	#include "advice.h"
f394e093	3	#include "gettext.h"
d1cbe1e6	4	#include "hash.h"
e1b3a2ca	5	#include "merge-recursive.h"
dabab1d6	6	#include "object-name.h"
d1cbe1e6	7	#include "repository.h"
6d297f81	8
e78d01bf TF	9	static const char builtin_merge_recursive_usage[] =
	10	"git %s <base>... -- <head> <remote> ...";
	11
d64bb065	12	static char better_branch_name(const char branch)
7ba3c078	13	{
b7f20f72	14	static char githead_env[8 + GIT_MAX_HEXSZ + 1];
7ba3c078 SP	15	char *name;
7ba3c078 SP	16
b7f20f72	17	if (strlen(branch) != the_hash_algo->hexsz)
d64bb065	18	return xstrdup(branch);
5096d490	19	xsnprintf(githead_env, sizeof(githead_env), "GITHEAD_%s", branch);
7ba3c078	20	name = getenv(githead_env);
d64bb065	21	return xstrdup(name ? name : branch);
7ba3c078 SP	22	}
7ba3c078 SP	23
5247b762	24	int cmd_merge_recursive(int argc, const char *argv, const char prefix UNUSED)
6d297f81	25	{
4e8161a8	26	const struct object_id *bases[21];
73118f89 SB	27	unsigned bases_count = 0;
73118f89 SB	28	int i, failed;
4e8161a8	29	struct object_id h1, h2;
8a2fce18	30	struct merge_options o;
d64bb065	31	char better1, better2;
8a2fce18	32	struct commit *result;
6d297f81	33
0d6caa2d	34	init_merge_options(&o, the_repository);
59556548	35	if (argv[0] && ends_with(argv[0], "-subtree"))
85e51b78	36	o.subtree_shift = "";
68faf689	37
6d297f81	38	if (argc < 4)
e78d01bf	39	usagef(builtin_merge_recursive_usage, argv[0]);
6d297f81	40
6d297f81	41	for (i = 1; i < argc; ++i) {
8cc5b290 AP	42	const char *arg = argv[i];
8cc5b290 AP	43
59556548	44	if (starts_with(arg, "--")) {
8cc5b290 AP	45	if (!arg[2])
8cc5b290 AP	46	break;
635a7bb1	47	if (parse_merge_opt(&o, arg + 2))
ccf78131	48	die(_("unknown option %s"), arg);
8cc5b290 AP	49	continue;
8cc5b290 AP	50	}
8a2fce18	51	if (bases_count < ARRAY_SIZE(bases)-1) {
4e8161a8	52	struct object_id *oid = xmalloc(sizeof(struct object_id));
d850b7a5	53	if (repo_get_oid(the_repository, argv[i], oid))
ccf78131	54	die(_("could not parse object '%s'"), argv[i]);
4e8161a8	55	bases[bases_count++] = oid;
73118f89	56	}
73118f89	57	else
ccf78131 VA	58	warning(Q_("cannot handle more than %d base. "
	59	"Ignoring %s.",
	60	"cannot handle more than %d bases. "
	61	"Ignoring %s.",
6f693252	62	ARRAY_SIZE(bases)-1),
b74d779b	63	(int)ARRAY_SIZE(bases)-1, argv[i]);
6d297f81 JS	64	}
6d297f81 JS	65	if (argc - i != 3) /* "--" "<head>" "<remote>" */
ccf78131	66	die(_("not handling anything other than two heads merge."));
6d297f81	67
9822175d EN	68	if (repo_read_index_unmerged(the_repository))
	69	die_resolve_conflict("merge");
	70
8a2fce18 MV	71	o.branch1 = argv[++i];
8a2fce18 MV	72	o.branch2 = argv[++i];
6d297f81	73
d850b7a5	74	if (repo_get_oid(the_repository, o.branch1, &h1))
ccf78131	75	die(_("could not resolve ref '%s'"), o.branch1);
d850b7a5	76	if (repo_get_oid(the_repository, o.branch2, &h2))
ccf78131	77	die(_("could not resolve ref '%s'"), o.branch2);
6d297f81	78
d64bb065 JK	79	o.branch1 = better1 = better_branch_name(o.branch1);
d64bb065 JK	80	o.branch2 = better2 = better_branch_name(o.branch2);
3f6ee2d1	81
8a2fce18	82	if (o.verbosity >= 3)
765773c8	83	printf(_("Merging %s with %s\n"), o.branch1, o.branch2);
e0ec1819	84
4e8161a8	85	failed = merge_recursive_generic(&o, &h1, &h2, bases_count, bases, &result);
d64bb065 JK	86
	87	free(better1);
	88	free(better2);
	89
73118f89 SB	90	if (failed < 0)
	91	return 128; /* die() error code */
	92	return failed;
6d297f81	93	}