mirror of
https://github.com/git/git
synced 2024-08-24 18:26:02 +00:00
![Ævar Arnfjörð Bjarmason](/assets/img/avatar_default.png)
Change the repo_dwim_log() function initially added as dwim_log() ineb3a48221f
(log --reflog: use dwim_log, 2007-02-09) to accept a NULL oid parameter. The refs_resolve_ref_unsafe() function it invokes already deals with it, but it didn't. This allows for a bit more clarity in a reflog-walk.c codepath added inf2eba66d4d
(Enable HEAD@{...} and make it independent from the current branch, 2007-02-03). We'll shortly use this in builtin/reflog.c as well. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
348 lines
8.1 KiB
C
348 lines
8.1 KiB
C
#include "cache.h"
|
|
#include "commit.h"
|
|
#include "refs.h"
|
|
#include "diff.h"
|
|
#include "revision.h"
|
|
#include "string-list.h"
|
|
#include "reflog-walk.h"
|
|
|
|
struct complete_reflogs {
|
|
char *ref;
|
|
const 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);
|
|
}
|
|
|
|
static struct complete_reflogs *read_complete_reflog(const char *ref)
|
|
{
|
|
struct complete_reflogs *reflogs =
|
|
xcalloc(1, sizeof(struct complete_reflogs));
|
|
reflogs->ref = xstrdup(ref);
|
|
for_each_reflog_ent(ref, read_one_reflog, reflogs);
|
|
if (reflogs->nr == 0) {
|
|
const char *name;
|
|
void *name_to_free;
|
|
name = name_to_free = resolve_refdup(ref, RESOLVE_REF_READING,
|
|
NULL, NULL);
|
|
if (name) {
|
|
for_each_reflog_ent(name, read_one_reflog, reflogs);
|
|
free(name_to_free);
|
|
}
|
|
}
|
|
if (reflogs->nr == 0) {
|
|
char *refname = xstrfmt("refs/%s", ref);
|
|
for_each_reflog_ent(refname, read_one_reflog, reflogs);
|
|
if (reflogs->nr == 0) {
|
|
free(refname);
|
|
refname = xstrfmt("refs/heads/%s", ref);
|
|
for_each_reflog_ent(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;
|
|
}
|
|
|
|
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 = resolve_refdup("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,
|
|
const 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
|
|
= shorten_unambiguous_ref(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,
|
|
const 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;
|
|
}
|