date,touch: allow timezone offsets in dates
Allow ISO 8601 style dates to include a timezone offset. Like
the '@' format these dates aren't relative to the user's current
timezone and shouldn't be subject to DST adjustment.
- The implementation uses the strptime() '%z' format specifier.
This an extension which may not be available so the use of
timezones is a configuration option.
- The 'touch' applet has been updated to respect whether DST
adjustment is required, matching 'date'.
function old new delta
parse_datestr 624 730 +106
static.fmt_str 106 136 +30
touch_main 388 392 +4
date_main 818 819 +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 141/0) Total: 141 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/touch.c b/coreutils/touch.c
index 78100ba..7e13a27 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -140,15 +140,17 @@
if (opts & (OPT_d|OPT_t)) {
struct tm tm_time;
time_t t;
+ int check_dst;
//memset(&tm_time, 0, sizeof(tm_time));
/* Better than memset: makes "HH:MM" dates meaningful */
time(&t);
localtime_r(&t, &tm_time);
- parse_datestr(date_str, &tm_time);
+ check_dst = parse_datestr(date_str, &tm_time);
/* Correct any day of week and day of year etc. fields */
- tm_time.tm_isdst = -1; /* Be sure to recheck dst */
+ if (check_dst)
+ tm_time.tm_isdst = -1; /* recheck dst unless date is UTC */
t = validate_tm_time(date_str, &tm_time);
timebuf[1].tv_sec = timebuf[0].tv_sec = t;