Merge branch 'da/mergetools-meld-output-opt-on-macos'

diff --git a/date.c b/date.c
index 92ab31aa4411ffa0c406ba5a21daf4fc86c0c73f..1fd6d663758de5a4b9d7f395b16716864317ed84 100644 (file)
--- a/date.c
+++ b/date.c
@@ -46,7 +46,17 @@ static time_t gm_time_t(timestamp_t time, int tz)
        minutes = tz < 0 ? -tz : tz;
        minutes = (minutes / 100)*60 + (minutes % 100);
        minutes = tz < 0 ? -minutes : minutes;
-       return time + minutes * 60;
+
+       if (minutes > 0) {
+               if (unsigned_add_overflows(time, minutes * 60))
+                       die("Timestamp+tz too large: %"PRItime" +%04d",
+                           time, tz);
+       } else if (time < -minutes * 60)
+               die("Timestamp before Unix epoch: %"PRItime" %04d", time, tz);
+       time += minutes * 60;
+       if (date_overflows(time))
+               die("Timestamp too large for this system: %"PRItime, time);
+       return (time_t)time;
 }
 
 /*
@@ -60,6 +70,12 @@ static struct tm *time_to_tm(timestamp_t time, int tz)
        return gmtime(&t);
 }
 
+static struct tm *time_to_tm_local(timestamp_t time)
+{
+       time_t t = time;
+       return localtime(&t);
+}
+
 /*
  * What value of "tz" was in effect back then at "time" in the
  * local timezone?
@@ -70,7 +86,10 @@ static int local_tzoffset(timestamp_t time)
        struct tm tm;
        int offset, eastwest;
 
-       t = time;
+       if (date_overflows(time))
+               die("Timestamp too large for this system: %"PRItime, time);
+
+       t = (time_t)time;
        localtime_r(&t, &tm);
        t_local = tm_to_time_t(&tm);
 
@@ -201,7 +220,10 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
                return timebuf.buf;
        }
 
-       tm = time_to_tm(time, tz);
+       if (mode->local)
+               tm = time_to_tm_local(time);
+       else
+               tm = time_to_tm(time, tz);
        if (!tm) {
                tm = time_to_tm(0, 0);
                tz = 0;
@@ -233,7 +255,8 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
                        month_names[tm->tm_mon], tm->tm_year + 1900,
                        tm->tm_hour, tm->tm_min, tm->tm_sec, tz);
        else if (mode->type == DATE_STRFTIME)
-               strbuf_addftime(&timebuf, mode->strftime_fmt, tm);
+               strbuf_addftime(&timebuf, mode->strftime_fmt, tm, tz,
+                               mode->local ? NULL : "");
        else
                strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d",
                                weekday_names[tm->tm_wday],