[thirdparty/git.git] / reflog-walk.c

#include "git-compat-util.h"
#include "commit.h"
#include "refs.h"
#include "diff.h"
#include "repository.h"
#include "revision.h"
#include "string-list.h"
#include "reflog-walk.h"

struct complete_reflogs {
	char *ref;
	char *short_ref;
	struct reflog_info {
		struct object_id ooid, noid;
		char *email;
		timestamp_t timestamp;
		int tz;
		char *message;
	} *items;
	int nr, alloc;
};

static int read_one_reflog(struct object_id *ooid, struct object_id *noid,
		const char *email, timestamp_t timestamp, int tz,
		const char *message, void *cb_data)
{
	struct complete_reflogs *array = cb_data;
	struct reflog_info *item;

	ALLOC_GROW(array->items, array->nr + 1, array->alloc);
	item = array->items + array->nr;
	oidcpy(&item->ooid, ooid);
	oidcpy(&item->noid, noid);
	item->email = xstrdup(email);
	item->timestamp = timestamp;
	item->tz = tz;
	item->message = xstrdup(message);
	array->nr++;
	return 0;
}

static void free_complete_reflog(struct complete_reflogs *array)
{
	int i;

	if (!array)
		return;

	for (i = 0; i < array->nr; i++) {
		free(array->items[i].email);
		free(array->items[i].message);
	}
	free(array->items);
	free(array->ref);
	free(array->short_ref);
	free(array);
}

static void complete_reflogs_clear(void *util, const char *str UNUSED)
{
	struct complete_reflogs *array = util;
	free_complete_reflog(array);
}

static struct complete_reflogs *read_complete_reflog(const char *ref)
{
	struct complete_reflogs *reflogs =
		xcalloc(1, sizeof(struct complete_reflogs));
	reflogs->ref = xstrdup(ref);
	refs_for_each_reflog_ent(get_main_ref_store(the_repository), ref,
				 read_one_reflog, reflogs);
	if (reflogs->nr == 0) {
		const char *name;
		void *name_to_free;
		name = name_to_free = refs_resolve_refdup(get_main_ref_store(the_repository),
							  ref,
							  RESOLVE_REF_READING,
							  NULL, NULL);
		if (name) {
			refs_for_each_reflog_ent(get_main_ref_store(the_repository),
						 name, read_one_reflog,
						 reflogs);
			free(name_to_free);
		}
	}
	if (reflogs->nr == 0) {
		char *refname = xstrfmt("refs/%s", ref);
		refs_for_each_reflog_ent(get_main_ref_store(the_repository),
					 refname, read_one_reflog, reflogs);
		if (reflogs->nr == 0) {
			free(refname);
			refname = xstrfmt("refs/heads/%s", ref);
			refs_for_each_reflog_ent(get_main_ref_store(the_repository),
						 refname, read_one_reflog,
						 reflogs);
		}
		free(refname);
	}
	return reflogs;
}

static int get_reflog_recno_by_time(struct complete_reflogs *array,
	timestamp_t timestamp)
{
	int i;
	for (i = array->nr - 1; i >= 0; i--)
		if (timestamp >= array->items[i].timestamp)
			return i;
	return -1;
}

struct commit_reflog {
	int recno;
	enum selector_type {
		SELECTOR_NONE,
		SELECTOR_INDEX,
		SELECTOR_DATE
	} selector;
	struct complete_reflogs *reflogs;
};

struct reflog_walk_info {
	struct commit_reflog **logs;
	size_t nr, alloc;
	struct string_list complete_reflogs;
	struct commit_reflog *last_commit_reflog;
};

void init_reflog_walk(struct reflog_walk_info **info)
{
	CALLOC_ARRAY(*info, 1);
	(*info)->complete_reflogs.strdup_strings = 1;
}

void reflog_walk_info_release(struct reflog_walk_info *info)
{
	size_t i;

	if (!info)
		return;

	for (i = 0; i < info->nr; i++)
		free(info->logs[i]);
	string_list_clear_func(&info->complete_reflogs,
			       complete_reflogs_clear);
	free(info->logs);
	free(info);
}

int add_reflog_for_walk(struct reflog_walk_info *info,
		struct commit *commit, const char *name)
{
	timestamp_t timestamp = 0;
	int recno = -1;
	struct string_list_item *item;
	struct complete_reflogs *reflogs;
	char *branch, *at = strchr(name, '@');
	struct commit_reflog *commit_reflog;
	enum selector_type selector = SELECTOR_NONE;

	if (commit->object.flags & UNINTERESTING)
		die("cannot walk reflogs for %s", name);

	branch = xstrdup(name);
	if (at && at[1] == '{') {
		char *ep;
		branch[at - name] = '\0';
		recno = strtoul(at + 2, &ep, 10);
		if (*ep != '}') {
			recno = -1;
			timestamp = approxidate(at + 2);
			selector = SELECTOR_DATE;
		}
		else
			selector = SELECTOR_INDEX;
	} else
		recno = 0;

	item = string_list_lookup(&info->complete_reflogs, branch);
	if (item)
		reflogs = item->util;
	else {
		if (*branch == '\0') {
			free(branch);
			branch = refs_resolve_refdup(get_main_ref_store(the_repository),
						     "HEAD", 0, NULL, NULL);
			if (!branch)
				die("no current branch");

		}
		reflogs = read_complete_reflog(branch);
		if (!reflogs || reflogs->nr == 0) {
			char *b;
			int ret = dwim_log(branch, strlen(branch),
					   NULL, &b);
			if (ret > 1)
				free(b);
			else if (ret == 1) {
				free_complete_reflog(reflogs);
				free(branch);
				branch = b;
				reflogs = read_complete_reflog(branch);
			}
		}
		if (!reflogs || reflogs->nr == 0) {
			free_complete_reflog(reflogs);
			free(branch);
			return -1;
		}
		string_list_insert(&info->complete_reflogs, branch)->util
			= reflogs;
	}
	free(branch);

	CALLOC_ARRAY(commit_reflog, 1);
	if (recno < 0) {
		commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp);
		if (commit_reflog->recno < 0) {
			free(commit_reflog);
			return -1;
		}
	} else
		commit_reflog->recno = reflogs->nr - recno - 1;
	commit_reflog->selector = selector;
	commit_reflog->reflogs = reflogs;

	ALLOC_GROW(info->logs, info->nr + 1, info->alloc);
	info->logs[info->nr++] = commit_reflog;

	return 0;
}

void get_reflog_selector(struct strbuf *sb,
			 struct reflog_walk_info *reflog_info,
			 struct date_mode dmode, int force_date,
			 int shorten)
{
	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	struct reflog_info *info;
	const char *printed_ref;

	if (!commit_reflog)
		return;

	if (shorten) {
		if (!commit_reflog->reflogs->short_ref)
			commit_reflog->reflogs->short_ref
				= refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
							       commit_reflog->reflogs->ref,
							       0);
		printed_ref = commit_reflog->reflogs->short_ref;
	} else {
		printed_ref = commit_reflog->reflogs->ref;
	}

	strbuf_addf(sb, "%s@{", printed_ref);
	if (commit_reflog->selector == SELECTOR_DATE ||
	    (commit_reflog->selector == SELECTOR_NONE && force_date)) {
		info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
		strbuf_addstr(sb, show_date(info->timestamp, info->tz, dmode));
	} else {
		strbuf_addf(sb, "%d", commit_reflog->reflogs->nr
			    - 2 - commit_reflog->recno);
	}

	strbuf_addch(sb, '}');
}

void get_reflog_message(struct strbuf *sb,
			struct reflog_walk_info *reflog_info)
{
	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	struct reflog_info *info;
	size_t len;

	if (!commit_reflog)
		return;

	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	len = strlen(info->message);
	if (len > 0)
		len--; /* strip away trailing newline */
	strbuf_add(sb, info->message, len);
}

const char *get_reflog_ident(struct reflog_walk_info *reflog_info)
{
	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	struct reflog_info *info;

	if (!commit_reflog)
		return NULL;

	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	return info->email;
}

timestamp_t get_reflog_timestamp(struct reflog_walk_info *reflog_info)
{
	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	struct reflog_info *info;

	if (!commit_reflog)
		return 0;

	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	return info->timestamp;
}

void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
			 struct date_mode dmode, int force_date)
{
	if (reflog_info && reflog_info->last_commit_reflog) {
		struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
		struct reflog_info *info;
		struct strbuf selector = STRBUF_INIT;

		info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
		get_reflog_selector(&selector, reflog_info, dmode, force_date, 0);
		if (oneline) {
			printf("%s: %s", selector.buf, info->message);
		}
		else {
			printf("Reflog: %s (%s)\nReflog message: %s",
			       selector.buf, info->email, info->message);
		}

		strbuf_release(&selector);
	}
}

int reflog_walk_empty(struct reflog_walk_info *info)
{
	return !info || !info->nr;
}

static struct commit *next_reflog_commit(struct commit_reflog *log)
{
	for (; log->recno >= 0; log->recno--) {
		struct reflog_info *entry = &log->reflogs->items[log->recno];
		struct object *obj = parse_object(the_repository,
						  &entry->noid);

		if (obj && obj->type == OBJ_COMMIT)
			return (struct commit *)obj;
	}
	return NULL;
}

static timestamp_t log_timestamp(struct commit_reflog *log)
{
	return log->reflogs->items[log->recno].timestamp;
}

struct commit *next_reflog_entry(struct reflog_walk_info *walk)
{
	struct commit_reflog *best = NULL;
	struct commit *best_commit = NULL;
	size_t i;

	for (i = 0; i < walk->nr; i++) {
		struct commit_reflog *log = walk->logs[i];
		struct commit *commit = next_reflog_commit(log);

		if (!commit)
			continue;

		if (!best || log_timestamp(log) > log_timestamp(best)) {
			best = log;
			best_commit = commit;
		}
	}

	if (best) {
		best->recno--;
		walk->last_commit_reflog = best;
		return best_commit;
	}

	return NULL;
}
Commit	Line	Data
36bf1958	1	#include "git-compat-util.h"
8860fd42 JS	2	#include "commit.h"
	3	#include "refs.h"
	4	#include "diff.h"
df6e8744	5	#include "repository.h"
8860fd42	6	#include "revision.h"
c455c87c	7	#include "string-list.h"
53645a3a	8	#include "reflog-walk.h"
8860fd42 JS	9
	10	struct complete_reflogs {
	11	char *ref;
81ffbf83	12	char *short_ref;
8860fd42	13	struct reflog_info {
8ebc3fd0	14	struct object_id ooid, noid;
8860fd42	15	char *email;
dddbad72	16	timestamp_t timestamp;
8860fd42 JS	17	int tz;
	18	char *message;
	19	} *items;
	20	int nr, alloc;
	21	};
	22
9461d272	23	static int read_one_reflog(struct object_id ooid, struct object_id noid,
dddbad72	24	const char *email, timestamp_t timestamp, int tz,
8860fd42 JS	25	const char message, void cb_data)
	26	{
	27	struct complete_reflogs *array = cb_data;
	28	struct reflog_info *item;
	29
6647cc26	30	ALLOC_GROW(array->items, array->nr + 1, array->alloc);
8860fd42	31	item = array->items + array->nr;
9461d272	32	oidcpy(&item->ooid, ooid);
9461d272	33	oidcpy(&item->noid, noid);
8860fd42 JS	34	item->email = xstrdup(email);
	35	item->timestamp = timestamp;
	36	item->tz = tz;
	37	item->message = xstrdup(message);
	38	array->nr++;
	39	return 0;
	40	}
	41
e30d463d JK	42	static void free_complete_reflog(struct complete_reflogs *array)
	43	{
	44	int i;
	45
	46	if (!array)
	47	return;
	48
	49	for (i = 0; i < array->nr; i++) {
	50	free(array->items[i].email);
	51	free(array->items[i].message);
	52	}
	53	free(array->items);
	54	free(array->ref);
81ffbf83	55	free(array->short_ref);
e30d463d JK	56	free(array);
	57	}
	58
1ee34710	59	static void complete_reflogs_clear(void util, const char str UNUSED)
81ffbf83 ÆAB	60	{
	61	struct complete_reflogs *array = util;
	62	free_complete_reflog(array);
	63	}
	64
8860fd42 JS	65	static struct complete_reflogs read_complete_reflog(const char ref)
	66	{
	67	struct complete_reflogs *reflogs =
8e1aa2f7	68	xcalloc(1, sizeof(struct complete_reflogs));
8860fd42	69	reflogs->ref = xstrdup(ref);
2e5c4758 PS	70	refs_for_each_reflog_ent(get_main_ref_store(the_repository), ref,
2e5c4758 PS	71	read_one_reflog, reflogs);
8860fd42	72	if (reflogs->nr == 0) {
96ec7b1e NTND	73	const char *name;
96ec7b1e NTND	74	void *name_to_free;
2e5c4758 PS	75	name = name_to_free = refs_resolve_refdup(get_main_ref_store(the_repository),
	76	ref,
	77	RESOLVE_REF_READING,
	78	NULL, NULL);
d5a35c11	79	if (name) {
2e5c4758 PS	80	refs_for_each_reflog_ent(get_main_ref_store(the_repository),
	81	name, read_one_reflog,
	82	reflogs);
96ec7b1e	83	free(name_to_free);
d5a35c11	84	}
8860fd42 JS	85	}
8860fd42 JS	86	if (reflogs->nr == 0) {
75faa45a	87	char *refname = xstrfmt("refs/%s", ref);
2e5c4758 PS	88	refs_for_each_reflog_ent(get_main_ref_store(the_repository),
2e5c4758 PS	89	refname, read_one_reflog, reflogs);
8860fd42	90	if (reflogs->nr == 0) {
75faa45a JK	91	free(refname);
75faa45a JK	92	refname = xstrfmt("refs/heads/%s", ref);
2e5c4758 PS	93	refs_for_each_reflog_ent(get_main_ref_store(the_repository),
	94	refname, read_one_reflog,
	95	reflogs);
8860fd42 JS	96	}
	97	free(refname);
	98	}
	99	return reflogs;
	100	}
	101
	102	static int get_reflog_recno_by_time(struct complete_reflogs *array,
dddbad72	103	timestamp_t timestamp)
8860fd42 JS	104	{
8860fd42 JS	105	int i;
40ab7c33	106	for (i = array->nr - 1; i >= 0; i--)
8860fd42 JS	107	if (timestamp >= array->items[i].timestamp)
	108	return i;
	109	return -1;
	110	}
	111
8860fd42	112	struct commit_reflog {
a763126b JK	113	int recno;
	114	enum selector_type {
	115	SELECTOR_NONE,
	116	SELECTOR_INDEX,
	117	SELECTOR_DATE
	118	} selector;
8860fd42 JS	119	struct complete_reflogs *reflogs;
	120	};
	121
	122	struct reflog_walk_info {
d08565bf JK	123	struct commit_reflog **logs;
d08565bf JK	124	size_t nr, alloc;
c455c87c	125	struct string_list complete_reflogs;
8860fd42 JS	126	struct commit_reflog *last_commit_reflog;
	127	};
	128
24d36f14	129	void init_reflog_walk(struct reflog_walk_info **info)
8860fd42	130	{
ca56dadb	131	CALLOC_ARRAY(*info, 1);
75afe7ac	132	(*info)->complete_reflogs.strdup_strings = 1;
8860fd42 JS	133	}
8860fd42 JS	134
81ffbf83 ÆAB	135	void reflog_walk_info_release(struct reflog_walk_info *info)
	136	{
	137	size_t i;
	138
	139	if (!info)
	140	return;
	141
	142	for (i = 0; i < info->nr; i++)
	143	free(info->logs[i]);
	144	string_list_clear_func(&info->complete_reflogs,
	145	complete_reflogs_clear);
	146	free(info->logs);
	147	free(info);
	148	}
	149
7b69b873	150	int add_reflog_for_walk(struct reflog_walk_info *info,
8860fd42 JS	151	struct commit commit, const char name)
8860fd42 JS	152	{
dddbad72	153	timestamp_t timestamp = 0;
8860fd42	154	int recno = -1;
c455c87c	155	struct string_list_item *item;
8860fd42 JS	156	struct complete_reflogs *reflogs;
	157	char branch, at = strchr(name, '@');
	158	struct commit_reflog *commit_reflog;
a763126b	159	enum selector_type selector = SELECTOR_NONE;
8860fd42	160
db055e65	161	if (commit->object.flags & UNINTERESTING)
1a07e59c	162	die("cannot walk reflogs for %s", name);
db055e65	163
8860fd42 JS	164	branch = xstrdup(name);
	165	if (at && at[1] == '{') {
	166	char *ep;
	167	branch[at - name] = '\0';
	168	recno = strtoul(at + 2, &ep, 10);
	169	if (*ep != '}') {
	170	recno = -1;
	171	timestamp = approxidate(at + 2);
a763126b	172	selector = SELECTOR_DATE;
8860fd42	173	}
a763126b JK	174	else
a763126b JK	175	selector = SELECTOR_INDEX;
8860fd42 JS	176	} else
	177	recno = 0;
	178
e8c8b713	179	item = string_list_lookup(&info->complete_reflogs, branch);
8860fd42 JS	180	if (item)
	181	reflogs = item->util;
	182	else {
d271fd53	183	if (*branch == '\0') {
d271fd53	184	free(branch);
2e5c4758 PS	185	branch = refs_resolve_refdup(get_main_ref_store(the_repository),
2e5c4758 PS	186	"HEAD", 0, NULL, NULL);
96ec7b1e	187	if (!branch)
1a07e59c	188	die("no current branch");
96ec7b1e	189
d271fd53	190	}
8860fd42	191	reflogs = read_complete_reflog(branch);
eb3a4822	192	if (!reflogs \|\| reflogs->nr == 0) {
eb3a4822	193	char *b;
5026b471	194	int ret = dwim_log(branch, strlen(branch),
6f45ec88	195	NULL, &b);
5026b471 JS	196	if (ret > 1)
	197	free(b);
	198	else if (ret == 1) {
e30d463d	199	free_complete_reflog(reflogs);
eb3a4822 JS	200	free(branch);
	201	branch = b;
	202	reflogs = read_complete_reflog(branch);
	203	}
	204	}
5026b471	205	if (!reflogs \|\| reflogs->nr == 0) {
e30d463d	206	free_complete_reflog(reflogs);
5026b471	207	free(branch);
7b69b873	208	return -1;
5026b471	209	}
78a395d3	210	string_list_insert(&info->complete_reflogs, branch)->util
8860fd42 JS	211	= reflogs;
8860fd42 JS	212	}
5026b471	213	free(branch);
8860fd42	214
ca56dadb	215	CALLOC_ARRAY(commit_reflog, 1);
8860fd42	216	if (recno < 0) {
8860fd42 JS	217	commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp);
8860fd42 JS	218	if (commit_reflog->recno < 0) {
8860fd42	219	free(commit_reflog);
7b69b873	220	return -1;
8860fd42 JS	221	}
	222	} else
	223	commit_reflog->recno = reflogs->nr - recno - 1;
a763126b	224	commit_reflog->selector = selector;
8860fd42 JS	225	commit_reflog->reflogs = reflogs;
8860fd42 JS	226
d08565bf JK	227	ALLOC_GROW(info->logs, info->nr + 1, info->alloc);
d08565bf JK	228	info->logs[info->nr++] = commit_reflog;
8860fd42	229
d08565bf	230	return 0;
8860fd42 JS	231	}
8860fd42 JS	232
72b103fe TR	233	void get_reflog_selector(struct strbuf *sb,
72b103fe TR	234	struct reflog_walk_info *reflog_info,
9720d23e	235	struct date_mode dmode, int force_date,
8f8f5476	236	int shorten)
72b103fe TR	237	{
	238	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	239	struct reflog_info *info;
8f8f5476	240	const char *printed_ref;
72b103fe TR	241
	242	if (!commit_reflog)
	243	return;
	244
8f8f5476 TR	245	if (shorten) {
	246	if (!commit_reflog->reflogs->short_ref)
	247	commit_reflog->reflogs->short_ref
2e5c4758 PS	248	= refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
	249	commit_reflog->reflogs->ref,
	250	0);
8f8f5476 TR	251	printed_ref = commit_reflog->reflogs->short_ref;
	252	} else {
	253	printed_ref = commit_reflog->reflogs->ref;
	254	}
	255
	256	strbuf_addf(sb, "%s@{", printed_ref);
794151e9	257	if (commit_reflog->selector == SELECTOR_DATE \|\|
55ccf85a	258	(commit_reflog->selector == SELECTOR_NONE && force_date)) {
72b103fe TR	259	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	260	strbuf_addstr(sb, show_date(info->timestamp, info->tz, dmode));
	261	} else {
	262	strbuf_addf(sb, "%d", commit_reflog->reflogs->nr
	263	- 2 - commit_reflog->recno);
	264	}
	265
	266	strbuf_addch(sb, '}');
	267	}
	268
8f8f5476 TR	269	void get_reflog_message(struct strbuf *sb,
	270	struct reflog_walk_info *reflog_info)
	271	{
	272	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	273	struct reflog_info *info;
	274	size_t len;
	275
	276	if (!commit_reflog)
	277	return;
	278
	279	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	280	len = strlen(info->message);
	281	if (len > 0)
	282	len--; /* strip away trailing newline */
	283	strbuf_add(sb, info->message, len);
	284	}
	285
cd1957f5 JK	286	const char get_reflog_ident(struct reflog_walk_info reflog_info)
	287	{
	288	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	289	struct reflog_info *info;
	290
	291	if (!commit_reflog)
	292	return NULL;
	293
	294	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	295	return info->email;
	296	}
	297
de239446 JK	298	timestamp_t get_reflog_timestamp(struct reflog_walk_info *reflog_info)
	299	{
	300	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
	301	struct reflog_info *info;
	302
	303	if (!commit_reflog)
	304	return 0;
	305
	306	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
	307	return info->timestamp;
	308	}
	309
72b103fe	310	void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
9720d23e	311	struct date_mode dmode, int force_date)
8860fd42	312	{
72b103fe TR	313	if (reflog_info && reflog_info->last_commit_reflog) {
72b103fe TR	314	struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
8860fd42	315	struct reflog_info *info;
72b103fe	316	struct strbuf selector = STRBUF_INIT;
8860fd42	317
4d12a471	318	info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
55ccf85a	319	get_reflog_selector(&selector, reflog_info, dmode, force_date, 0);
4d12a471	320	if (oneline) {
72b103fe	321	printf("%s: %s", selector.buf, info->message);
4d12a471 JH	322	}
4d12a471 JH	323	else {
72b103fe TR	324	printf("Reflog: %s (%s)\nReflog message: %s",
72b103fe TR	325	selector.buf, info->email, info->message);
4d12a471	326	}
72b103fe TR	327
72b103fe TR	328	strbuf_release(&selector);
8860fd42 JS	329	}
8860fd42 JS	330	}
7f97de5e JK	331
	332	int reflog_walk_empty(struct reflog_walk_info *info)
	333	{
d08565bf JK	334	return !info \|\| !info->nr;
	335	}
	336
	337	static struct commit next_reflog_commit(struct commit_reflog log)
	338	{
	339	for (; log->recno >= 0; log->recno--) {
	340	struct reflog_info *entry = &log->reflogs->items[log->recno];
109cd76d SB	341	struct object *obj = parse_object(the_repository,
109cd76d SB	342	&entry->noid);
d08565bf JK	343
	344	if (obj && obj->type == OBJ_COMMIT)
	345	return (struct commit *)obj;
	346	}
	347	return NULL;
	348	}
	349
	350	static timestamp_t log_timestamp(struct commit_reflog *log)
	351	{
	352	return log->reflogs->items[log->recno].timestamp;
	353	}
	354
	355	struct commit next_reflog_entry(struct reflog_walk_info walk)
	356	{
	357	struct commit_reflog *best = NULL;
	358	struct commit *best_commit = NULL;
	359	size_t i;
	360
	361	for (i = 0; i < walk->nr; i++) {
	362	struct commit_reflog *log = walk->logs[i];
	363	struct commit *commit = next_reflog_commit(log);
	364
	365	if (!commit)
	366	continue;
	367
	368	if (!best \|\| log_timestamp(log) > log_timestamp(best)) {
	369	best = log;
	370	best_commit = commit;
	371	}
	372	}
	373
	374	if (best) {
	375	best->recno--;
	376	walk->last_commit_reflog = best;
	377	return best_commit;
	378	}
	379
	380	return NULL;
7f97de5e	381	}