Hi!
On 2017-11-28 10:10, Henner Zeller wrote:
>>>> IIRC the timestamp is just an unique ID of the item in Kicad, right?
>>>> It's never propagated to the system time, so 64-bits IMHO 64-bits should
>>>> be safe everywhere.
Fine, as long as there is an agreement that Kicad's uint64_t timestamp is
holding the number of seconds (not counting leap seconds) since 00:00, Jan 1
1970 UTC, corresponding to POSIX time - on all platforms?
As of the time of writing this on my 64bit Arch Linux, this:
----- 8< -----
#include <stdio.h>
#include <time.h>
#include <inttypes.h>
int main(void) {
time_t timestamp;
time(×tamp);
printf("time_t [PRIu64]: %" PRIu64 "\n", timestamp);
printf("time_t [PRIx64]: %" PRIx64 "\n", timestamp);
printf("sizeof(time_t): %d\n", sizeof(time_t));
return 0;
}
----- 8< -----
delivers:
----- 8< -----
time_t [PRIu64]: 1511871892
time_t [PRIx64]: 5a1d5594
sizeof(time_t): 8
----- 8< -----
Correct?
Regards,
Clemens
On 2017-11-28 10:10, Henner Zeller wrote:
>>>> IIRC the timestamp is just an unique ID of the item in Kicad, right?
>>>> It's never propagated to the system time, so 64-bits IMHO 64-bits should
>>>> be safe everywhere.
>>>>
>>>> Tom
>>>
>>> Yes it is a unique ID only.
>>> It is converted to a date in footprint editor (legacy mode) to show the
>>> last edition date to the user.
>>> This is easy to convert a uint64_t to show this message.
>>
>> I suppose the most elegant solution would be to change time_t in KiCad
>> source code to uint64_t. This leaves no ambiguity and should be easy to
>> handle with swig.
>
> This sounds good to me, in particular as it reflects more the use of
> what this is (a unique ID instead of a timestamp).
>
> -h
>
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