mirror of
https://github.com/git/git
synced 2024-10-06 00:29:28 +00:00
Merge branch 'rs/read-ref-at'
* rs/read-ref-at: refs.c: change read_ref_at to use the reflog iterators
This commit is contained in:
Junio C Hamano
commit
bb0ced7581
202
refs.c
202
refs.c
|
|
@ -2943,119 +2943,117 @@ int create_symref(const char *ref_target, const char *refs_heads_master,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static char *ref_msg(const char *line, const char *endp)
|
||||
struct read_ref_at_cb {
|
||||
const char *refname;
|
||||
unsigned long at_time;
|
||||
int cnt;
|
||||
int reccnt;
|
||||
unsigned char *sha1;
|
||||
int found_it;
|
||||
|
||||
unsigned char osha1[20];
|
||||
unsigned char nsha1[20];
|
||||
int tz;
|
||||
unsigned long date;
|
||||
char **msg;
|
||||
unsigned long *cutoff_time;
|
||||
int *cutoff_tz;
|
||||
int *cutoff_cnt;
|
||||
};
|
||||
|
||||
static int read_ref_at_ent(unsigned char *osha1, unsigned char *nsha1,
|
||||
const char *email, unsigned long timestamp, int tz,
|
||||
const char *message, void *cb_data)
|
||||
{
|
||||
const char *ep;
|
||||
line += 82;
|
||||
ep = memchr(line, '\n', endp - line);
|
||||
if (!ep)
|
||||
ep = endp;
|
||||
return xmemdupz(line, ep - line);
|
||||
struct read_ref_at_cb *cb = cb_data;
|
||||
|
||||
cb->reccnt++;
|
||||
cb->tz = tz;
|
||||
cb->date = timestamp;
|
||||
|
||||
if (timestamp <= cb->at_time || cb->cnt == 0) {
|
||||
if (cb->msg)
|
||||
*cb->msg = xstrdup(message);
|
||||
if (cb->cutoff_time)
|
||||
*cb->cutoff_time = timestamp;
|
||||
if (cb->cutoff_tz)
|
||||
*cb->cutoff_tz = tz;
|
||||
if (cb->cutoff_cnt)
|
||||
*cb->cutoff_cnt = cb->reccnt - 1;
|
||||
/*
|
||||
* we have not yet updated cb->[n|o]sha1 so they still
|
||||
* hold the values for the previous record.
|
||||
*/
|
||||
if (!is_null_sha1(cb->osha1)) {
|
||||
hashcpy(cb->sha1, nsha1);
|
||||
if (hashcmp(cb->osha1, nsha1))
|
||||
warning("Log for ref %s has gap after %s.",
|
||||
cb->refname, show_date(cb->date, cb->tz, DATE_RFC2822));
|
||||
}
|
||||
else if (cb->date == cb->at_time)
|
||||
hashcpy(cb->sha1, nsha1);
|
||||
else if (hashcmp(nsha1, cb->sha1))
|
||||
warning("Log for ref %s unexpectedly ended on %s.",
|
||||
cb->refname, show_date(cb->date, cb->tz,
|
||||
DATE_RFC2822));
|
||||
hashcpy(cb->osha1, osha1);
|
||||
hashcpy(cb->nsha1, nsha1);
|
||||
cb->found_it = 1;
|
||||
return 1;
|
||||
}
|
||||
hashcpy(cb->osha1, osha1);
|
||||
hashcpy(cb->nsha1, nsha1);
|
||||
if (cb->cnt > 0)
|
||||
cb->cnt--;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int read_ref_at_ent_oldest(unsigned char *osha1, unsigned char *nsha1,
|
||||
const char *email, unsigned long timestamp,
|
||||
int tz, const char *message, void *cb_data)
|
||||
{
|
||||
struct read_ref_at_cb *cb = cb_data;
|
||||
|
||||
if (cb->msg)
|
||||
*cb->msg = xstrdup(message);
|
||||
if (cb->cutoff_time)
|
||||
*cb->cutoff_time = timestamp;
|
||||
if (cb->cutoff_tz)
|
||||
*cb->cutoff_tz = tz;
|
||||
if (cb->cutoff_cnt)
|
||||
*cb->cutoff_cnt = cb->reccnt;
|
||||
hashcpy(cb->sha1, osha1);
|
||||
if (is_null_sha1(cb->sha1))
|
||||
hashcpy(cb->sha1, nsha1);
|
||||
/* We just want the first entry */
|
||||
return 1;
|
||||
}
|
||||
|
||||
int read_ref_at(const char *refname, unsigned long at_time, int cnt,
|
||||
unsigned char *sha1, char **msg,
|
||||
unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
|
||||
{
|
||||
const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec;
|
||||
char *tz_c;
|
||||
int logfd, tz, reccnt = 0;
|
||||
struct stat st;
|
||||
unsigned long date;
|
||||
unsigned char logged_sha1[20];
|
||||
void *log_mapped;
|
||||
size_t mapsz;
|
||||
struct read_ref_at_cb cb;
|
||||
|
||||
logfile = git_path("logs/%s", refname);
|
||||
logfd = open(logfile, O_RDONLY, 0);
|
||||
if (logfd < 0)
|
||||
die_errno("Unable to read log '%s'", logfile);
|
||||
fstat(logfd, &st);
|
||||
if (!st.st_size)
|
||||
die("Log %s is empty.", logfile);
|
||||
mapsz = xsize_t(st.st_size);
|
||||
log_mapped = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, logfd, 0);
|
||||
logdata = log_mapped;
|
||||
close(logfd);
|
||||
memset(&cb, 0, sizeof(cb));
|
||||
cb.refname = refname;
|
||||
cb.at_time = at_time;
|
||||
cb.cnt = cnt;
|
||||
cb.msg = msg;
|
||||
cb.cutoff_time = cutoff_time;
|
||||
cb.cutoff_tz = cutoff_tz;
|
||||
cb.cutoff_cnt = cutoff_cnt;
|
||||
cb.sha1 = sha1;
|
||||
|
||||
lastrec = NULL;
|
||||
rec = logend = logdata + st.st_size;
|
||||
while (logdata < rec) {
|
||||
reccnt++;
|
||||
if (logdata < rec && *(rec-1) == '\n')
|
||||
rec--;
|
||||
lastgt = NULL;
|
||||
while (logdata < rec && *(rec-1) != '\n') {
|
||||
rec--;
|
||||
if (*rec == '>')
|
||||
lastgt = rec;
|
||||
}
|
||||
if (!lastgt)
|
||||
die("Log %s is corrupt.", logfile);
|
||||
date = strtoul(lastgt + 1, &tz_c, 10);
|
||||
if (date <= at_time || cnt == 0) {
|
||||
tz = strtoul(tz_c, NULL, 10);
|
||||
if (msg)
|
||||
*msg = ref_msg(rec, logend);
|
||||
if (cutoff_time)
|
||||
*cutoff_time = date;
|
||||
if (cutoff_tz)
|
||||
*cutoff_tz = tz;
|
||||
if (cutoff_cnt)
|
||||
*cutoff_cnt = reccnt - 1;
|
||||
if (lastrec) {
|
||||
if (get_sha1_hex(lastrec, logged_sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
if (get_sha1_hex(rec + 41, sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
if (hashcmp(logged_sha1, sha1)) {
|
||||
warning("Log %s has gap after %s.",
|
||||
logfile, show_date(date, tz, DATE_RFC2822));
|
||||
}
|
||||
}
|
||||
else if (date == at_time) {
|
||||
if (get_sha1_hex(rec + 41, sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
}
|
||||
else {
|
||||
if (get_sha1_hex(rec + 41, logged_sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
if (hashcmp(logged_sha1, sha1)) {
|
||||
warning("Log %s unexpectedly ended on %s.",
|
||||
logfile, show_date(date, tz, DATE_RFC2822));
|
||||
}
|
||||
}
|
||||
munmap(log_mapped, mapsz);
|
||||
return 0;
|
||||
}
|
||||
lastrec = rec;
|
||||
if (cnt > 0)
|
||||
cnt--;
|
||||
}
|
||||
for_each_reflog_ent_reverse(refname, read_ref_at_ent, &cb);
|
||||
|
||||
rec = logdata;
|
||||
while (rec < logend && *rec != '>' && *rec != '\n')
|
||||
rec++;
|
||||
if (rec == logend || *rec == '\n')
|
||||
die("Log %s is corrupt.", logfile);
|
||||
date = strtoul(rec + 1, &tz_c, 10);
|
||||
tz = strtoul(tz_c, NULL, 10);
|
||||
if (get_sha1_hex(logdata, sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
if (is_null_sha1(sha1)) {
|
||||
if (get_sha1_hex(logdata + 41, sha1))
|
||||
die("Log %s is corrupt.", logfile);
|
||||
}
|
||||
if (msg)
|
||||
*msg = ref_msg(logdata, logend);
|
||||
munmap(log_mapped, mapsz);
|
||||
if (!cb.reccnt)
|
||||
die("Log for %s is empty.", refname);
|
||||
if (cb.found_it)
|
||||
return 0;
|
||||
|
||||
for_each_reflog_ent(refname, read_ref_at_ent_oldest, &cb);
|
||||
|
||||
if (cutoff_time)
|
||||
*cutoff_time = date;
|
||||
if (cutoff_tz)
|
||||
*cutoff_tz = tz;
|
||||
if (cutoff_cnt)
|
||||
*cutoff_cnt = reccnt;
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -235,7 +235,7 @@ test_expect_success \
|
|||
'rm -f o e &&
|
||||
git rev-parse --verify "master@{2005-05-26 23:33:01}" >o 2>e &&
|
||||
test '"$B"' = $(cat o) &&
|
||||
test "warning: Log .git/logs/'"$m has gap after $gd"'." = "$(cat e)"'
|
||||
test "warning: Log for ref '"$m has gap after $gd"'." = "$(cat e)"'
|
||||
test_expect_success \
|
||||
'Query "master@{2005-05-26 23:38:00}" (middle of history)' \
|
||||
'rm -f o e &&
|
||||
|
|
@ -253,7 +253,7 @@ test_expect_success \
|
|||
'rm -f o e &&
|
||||
git rev-parse --verify "master@{2005-05-28}" >o 2>e &&
|
||||
test '"$D"' = $(cat o) &&
|
||||
test "warning: Log .git/logs/'"$m unexpectedly ended on $ld"'." = "$(cat e)"'
|
||||
test "warning: Log for ref '"$m unexpectedly ended on $ld"'." = "$(cat e)"'
|
||||
|
||||
|
||||
rm -f .git/$m .git/logs/$m expect
|
||||
|
|
|
|||
Loading…
Reference in a new issue