<commit_before>#include "cache.h"
#include "refs.h"
#include "builtin.h"

static const char git_update_ref_usage[] =
"git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])";

int cmd_update_ref(int argc, const char **argv, const char *prefix)
{
	const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL;
	unsigned char sha1[20], oldsha1[20];
	int i, delete, ref_flags;

	delete = 0;
	ref_flags = 0;
	git_config(git_default_config);

	for (i = 1; i < argc; i++) {
		if (!strcmp("-m", argv[i])) {
			if (i+1 >= argc)
				usage(git_update_ref_usage);
			msg = argv[++i];
			if (!*msg)
				die("Refusing to perform update with empty message.");
			continue;
		}
		if (!strcmp("-d", argv[i])) {
			delete = 1;
			continue;
		}
		if (!strcmp("--no-deref", argv[i])) {
			ref_flags |= REF_NODEREF;
			continue;
		}
		if (!refname) {
			refname = argv[i];
			continue;
		}
		if (!value) {
			value = argv[i];
			continue;
		}
		if (!oldval) {
			oldval = argv[i];
			continue;
		}
	}
	if (!refname || !value)
		usage(git_update_ref_usage);

	if (get_sha1(value, sha1))
		die("%s: not a valid SHA1", value);

	if (delete) {
		if (oldval)
			usage(git_update_ref_usage);
		return delete_ref(refname, sha1);
	}

	hashclr(oldsha1);
	if (oldval && *oldval && get_sha1(oldval, oldsha1))
		die("%s: not a valid old SHA1", oldval);

	return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
			  ref_flags, DIE_ON_ERR);
}<commit_msg>Make builtin-update-ref.c use parse_options<commit_after>#include "cache.h"
#include "refs.h"
#include "builtin.h"
#include "parse-options.h"

static const char * const git_update_ref_usage[] = {
	"git-update-ref [options] -d <refname> <oldval>",
	"git-update-ref [options]    <refname> <newval> [<oldval>]",
	NULL
};

int cmd_update_ref(int argc, const char **argv, const char *prefix)
{
	const char *refname, *value, *oldval, *msg=NULL;
	unsigned char sha1[20], oldsha1[20];
	int delete = 0, no_deref = 0;
	struct option options[] = {
		OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"),
		OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"),
		OPT_BOOLEAN( 0 , "no-deref", &no_deref,
					"update <refname> not the one it points to"),
		OPT_END(),
	};

	git_config(git_default_config);
	argc = parse_options(argc, argv, options, git_update_ref_usage, 0);
	if (msg && !*msg)
		die("Refusing to perform update with empty message.");

	if (argc < 2 || argc > 3)
		usage_with_options(git_update_ref_usage, options);
	refname = argv[0];
	value   = argv[1];
	oldval  = argv[2];

	if (get_sha1(value, sha1))
		die("%s: not a valid SHA1", value);

	if (delete) {
		if (oldval)
			usage_with_options(git_update_ref_usage, options);
		return delete_ref(refname, sha1);
	}

	hashclr(oldsha1);
	if (oldval && *oldval && get_sha1(oldval, oldsha1))
		die("%s: not a valid old SHA1", oldval);

	return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
			  no_deref ? REF_NODEREF : 0, DIE_ON_ERR);
}
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{'dir': 'git-commits-cleaned', 'id': '7016871', 'n_tokens_mistral': 1291, 'n_tokens_neox': 1187, 'n_words': 297}