Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

316 lines (282 sloc) 7.875 kb
#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 {
unsigned char osha1[20], nsha1[20];
char *email;
unsigned long timestamp;
int tz;
char *message;
} *items;
int nr, alloc;
};
static int read_one_reflog(unsigned char *osha1, unsigned char *nsha1,
const char *email, unsigned long timestamp, int tz,
const char *message, void *cb_data)
{
struct complete_reflogs *array = cb_data;
struct reflog_info *item;
if (array->nr >= array->alloc) {
array->alloc = alloc_nr(array->nr + 1);
array->items = xrealloc(array->items, array->alloc *
sizeof(struct reflog_info));
}
item = array->items + array->nr;
memcpy(item->osha1, osha1, 20);
memcpy(item->nsha1, nsha1, 20);
item->email = xstrdup(email);
item->timestamp = timestamp;
item->tz = tz;
item->message = xstrdup(message);
array->nr++;
return 0;
}
static struct complete_reflogs *read_complete_reflog(const char *ref)
{
struct complete_reflogs *reflogs =
xcalloc(sizeof(struct complete_reflogs), 1);
reflogs->ref = xstrdup(ref);
for_each_reflog_ent(ref, read_one_reflog, reflogs);
if (reflogs->nr == 0) {
unsigned char sha1[20];
const char *name = resolve_ref(ref, sha1, 1, NULL);
if (name)
for_each_reflog_ent(name, read_one_reflog, reflogs);
}
if (reflogs->nr == 0) {
int len = strlen(ref);
char *refname = xmalloc(len + 12);
sprintf(refname, "refs/%s", ref);
for_each_reflog_ent(refname, read_one_reflog, reflogs);
if (reflogs->nr == 0) {
sprintf(refname, "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,
unsigned long timestamp)
{
int i;
for (i = array->nr - 1; i >= 0; i--)
if (timestamp >= array->items[i].timestamp)
return i;
return -1;
}
struct commit_info_lifo {
struct commit_info {
struct commit *commit;
void *util;
} *items;
int nr, alloc;
};
static struct commit_info *get_commit_info(struct commit *commit,
struct commit_info_lifo *lifo, int pop)
{
int i;
for (i = 0; i < lifo->nr; i++)
if (lifo->items[i].commit == commit) {
struct commit_info *result = &lifo->items[i];
if (pop) {
if (i + 1 < lifo->nr)
memmove(lifo->items + i,
lifo->items + i + 1,
(lifo->nr - i) *
sizeof(struct commit_info));
lifo->nr--;
}
return result;
}
return NULL;
}
static void add_commit_info(struct commit *commit, void *util,
struct commit_info_lifo *lifo)
{
struct commit_info *info;
if (lifo->nr >= lifo->alloc) {
lifo->alloc = alloc_nr(lifo->nr + 1);
lifo->items = xrealloc(lifo->items,
lifo->alloc * sizeof(struct commit_info));
}
info = lifo->items + lifo->nr;
info->commit = commit;
info->util = util;
lifo->nr++;
}
struct commit_reflog {
int flag, recno;
struct complete_reflogs *reflogs;
};
struct reflog_walk_info {
struct commit_info_lifo reflogs;
struct string_list complete_reflogs;
struct commit_reflog *last_commit_reflog;
};
void init_reflog_walk(struct reflog_walk_info** info)
{
*info = xcalloc(sizeof(struct reflog_walk_info), 1);
}
int add_reflog_for_walk(struct reflog_walk_info *info,
struct commit *commit, const char *name)
{
unsigned long timestamp = 0;
int recno = -1;
struct string_list_item *item;
struct complete_reflogs *reflogs;
char *branch, *at = strchr(name, '@');
struct commit_reflog *commit_reflog;
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);
}
} else
recno = 0;
item = string_list_lookup(&info->complete_reflogs, branch);
if (item)
reflogs = item->util;
else {
if (*branch == '\0') {
unsigned char sha1[20];
const char *head = resolve_ref("HEAD", sha1, 0, NULL);
if (!head)
die ("No current branch");
free(branch);
branch = xstrdup(head);
}
reflogs = read_complete_reflog(branch);
if (!reflogs || reflogs->nr == 0) {
unsigned char sha1[20];
char *b;
if (dwim_log(branch, strlen(branch), sha1, &b) == 1) {
if (reflogs) {
free(reflogs->ref);
free(reflogs);
}
free(branch);
branch = b;
reflogs = read_complete_reflog(branch);
}
}
if (!reflogs || reflogs->nr == 0)
return -1;
string_list_insert(&info->complete_reflogs, branch)->util
= reflogs;
}
commit_reflog = xcalloc(sizeof(struct commit_reflog), 1);
if (recno < 0) {
commit_reflog->flag = 1;
commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp);
if (commit_reflog->recno < 0) {
free(branch);
free(commit_reflog);
return -1;
}
} else
commit_reflog->recno = reflogs->nr - recno - 1;
commit_reflog->reflogs = reflogs;
add_commit_info(commit, commit_reflog, &info->reflogs);
return 0;
}
void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
{
struct commit_info *commit_info =
get_commit_info(commit, &info->reflogs, 0);
struct commit_reflog *commit_reflog;
struct reflog_info *reflog;
info->last_commit_reflog = NULL;
if (!commit_info)
return;
commit_reflog = commit_info->util;
if (commit_reflog->recno < 0) {
commit->parents = NULL;
return;
}
reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
info->last_commit_reflog = commit_reflog;
commit_reflog->recno--;
commit_info->commit = (struct commit *)parse_object(reflog->osha1);
if (!commit_info->commit) {
commit->parents = NULL;
return;
}
commit->parents = xcalloc(sizeof(struct commit_list), 1);
commit->parents->item = commit_info->commit;
commit->object.flags &= ~(ADDED | SEEN | SHOWN);
}
void get_reflog_selector(struct strbuf *sb,
struct reflog_walk_info *reflog_info,
enum date_mode dmode,
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->flag || dmode) {
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);
}
void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
enum date_mode dmode)
{
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, 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);
}
}
Jump to Line
Something went wrong with that request. Please try again.