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

#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "advice.h"
#include "gettext.h"
#include "hash.h"
#include "merge-ort-wrappers.h"
#include "object-name.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,
			struct repository *repo UNUSED)
{
	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_basic_merge_options(&o, the_repository);
	if (argv[0] && ends_with(argv[0], "-subtree"))
		o.subtree_shift = "";

	if (argc == 2 && !strcmp(argv[1], "-h")) {
		struct strbuf msg = STRBUF_INIT;
		strbuf_addf(&msg, builtin_merge_recursive_usage, argv[0]);
		show_usage_if_asked(argc, argv, msg.buf);
	}

	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) {
			if (repo_get_oid(the_repository, argv[i], &bases[bases_count++]))
				die(_("could not parse object '%s'"), argv[i]);
		}
		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_ort_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
	1	#define USE_THE_REPOSITORY_VARIABLE
	2	#include "builtin.h"
	3	#include "advice.h"
	4	#include "gettext.h"
	5	#include "hash.h"
	6	#include "merge-ort-wrappers.h"
	7	#include "object-name.h"
	8
	9	static const char builtin_merge_recursive_usage[] =
	10	"git %s <base>... -- <head> <remote> ...";
	11
	12	static char better_branch_name(const char branch)
	13	{
	14	static char githead_env[8 + GIT_MAX_HEXSZ + 1];
	15	char *name;
	16
	17	if (strlen(branch) != the_hash_algo->hexsz)
	18	return xstrdup(branch);
	19	xsnprintf(githead_env, sizeof(githead_env), "GITHEAD_%s", branch);
	20	name = getenv(githead_env);
	21	return xstrdup(name ? name : branch);
	22	}
	23
	24	int cmd_merge_recursive(int argc,
	25	const char **argv,
	26	const char *prefix UNUSED,
	27	struct repository *repo UNUSED)
	28	{
	29	struct object_id bases[21];
	30	unsigned bases_count = 0;
	31	int i, failed;
	32	struct object_id h1, h2;
	33	struct merge_options o;
	34	char better1, better2;
	35	struct commit *result;
	36
	37	init_basic_merge_options(&o, the_repository);
	38	if (argv[0] && ends_with(argv[0], "-subtree"))
	39	o.subtree_shift = "";
	40
	41	if (argc == 2 && !strcmp(argv[1], "-h")) {
	42	struct strbuf msg = STRBUF_INIT;
	43	strbuf_addf(&msg, builtin_merge_recursive_usage, argv[0]);
	44	show_usage_if_asked(argc, argv, msg.buf);
	45	}
	46
	47	if (argc < 4)
	48	usagef(builtin_merge_recursive_usage, argv[0]);
	49
	50	for (i = 1; i < argc; ++i) {
	51	const char *arg = argv[i];
	52
	53	if (starts_with(arg, "--")) {
	54	if (!arg[2])
	55	break;
	56	if (parse_merge_opt(&o, arg + 2))
	57	die(_("unknown option %s"), arg);
	58	continue;
	59	}
	60	if (bases_count < ARRAY_SIZE(bases)-1) {
	61	if (repo_get_oid(the_repository, argv[i], &bases[bases_count++]))
	62	die(_("could not parse object '%s'"), argv[i]);
	63	}
	64	else
	65	warning(Q_("cannot handle more than %d base. "
	66	"Ignoring %s.",
	67	"cannot handle more than %d bases. "
	68	"Ignoring %s.",
	69	ARRAY_SIZE(bases)-1),
	70	(int)ARRAY_SIZE(bases)-1, argv[i]);
	71	}
	72	if (argc - i != 3) /* "--" "<head>" "<remote>" */
	73	die(_("not handling anything other than two heads merge."));
	74
	75	if (repo_read_index_unmerged(the_repository))
	76	die_resolve_conflict("merge");
	77
	78	o.branch1 = argv[++i];
	79	o.branch2 = argv[++i];
	80
	81	if (repo_get_oid(the_repository, o.branch1, &h1))
	82	die(_("could not resolve ref '%s'"), o.branch1);
	83	if (repo_get_oid(the_repository, o.branch2, &h2))
	84	die(_("could not resolve ref '%s'"), o.branch2);
	85
	86	o.branch1 = better1 = better_branch_name(o.branch1);
	87	o.branch2 = better2 = better_branch_name(o.branch2);
	88
	89	if (o.verbosity >= 3)
	90	printf(_("Merging %s with %s\n"), o.branch1, o.branch2);
	91
	92	failed = merge_ort_generic(&o, &h1, &h2, bases_count, bases, &result);
	93
	94	free(better1);
	95	free(better2);
	96
	97	if (failed < 0)
	98	return 128; /* die() error code */
	99	return failed;
	100	}