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Merge pull request #905 from carlosmn/signature-now

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signature: make the OS give us the offset for git_signature_now
This commit is contained in:
Vicent Martí 2012-08-28 13:55:55 -07:00
commit 319ad0ba20
1 changed files with 12 additions and 10 deletions
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22
src/signature.c
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@ -125,24 +125,26 @@ int git_signature_now(git_signature **sig_out, const char *name, const char *ema
{
time_t now;
time_t offset;
struct tm *utc_tm, *local_tm;
struct tm *utc_tm;
git_signature *sig;
struct tm _utc, _local;
struct tm _utc;
*sig_out = NULL;
/*
* Get the current time as seconds since the epoch and
* transform that into a tm struct containing the time at
* UTC. Give that to mktime which considers it a local time
* (tm_isdst = -1 asks it to take DST into account) and gives
* us that time as seconds since the epoch. The difference
* between its return value and 'now' is our offset to UTC.
*/
time(&now);
utc_tm = p_gmtime_r(&now, &_utc);
local_tm = p_localtime_r(&now, &_local);
offset = mktime(local_tm) - mktime(utc_tm);
utc_tm->tm_isdst = -1;
offset = difftime(now, mktime(utc_tm));
offset /= 60;
/* mktime takes care of setting tm_isdst correctly */
if (local_tm->tm_isdst)
offset += 60;
if (git_signature_new(&sig, name, email, now, (int)offset) < 0)
return -1;