On 5/3/19 7:46 am, Florian Wehner wrote: > The time logged is currently given as localtime without any time-zone > information. This is confusing in various scenarios. > > Examples: > * If one is travelling across time-zones and the timestamps in the log > appear out of order.
Stop updating multiple times per hour! :D > * Comparing dates with `datediff` gives an offset by the time-zone > > This patch would reformat the time-stamp to a full ISO-8601 version. > It includes the 'T' separating date and time. This could be removed. > > Old: [2019-03-04 16:15] > New: [2019-03-04T16:15-05:00] > Can we switch from localtime() to gmtime() and just use UTC? > Signed-off-by: Florian Wehner <flor...@whnr.de> > --- > lib/libalpm/log.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/lib/libalpm/log.c b/lib/libalpm/log.c > index e46ad3c3..cf869a08 100644 > --- a/lib/libalpm/log.c > +++ b/lib/libalpm/log.c > @@ -20,6 +20,7 @@ > > #include <stdio.h> > #include <stdarg.h> > +#include <stdlib.h> > #include <errno.h> > #include <syslog.h> > > @@ -37,12 +38,17 @@ > static int _alpm_log_leader(FILE *f, const char *prefix) > { > time_t t = time(NULL); > + int tz_h, tz_m; > struct tm *tm = localtime(&t); > > + /* Calculate the timezone offset ±hh:mm */ > + tz_h = tm->tm_gmtoff/3600; > + tz_m = abs(tm->tm_gmtoff - (tz_h*3600))/60; > + > /* Use ISO-8601 date format */ > - return fprintf(f, "[%04d-%02d-%02d %02d:%02d] [%s] ", > + return fprintf(f, "[%04d-%02d-%02dT%02d:%02d%+03d:%02d] [%s] ", > tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, > - tm->tm_hour, tm->tm_min, prefix); > + tm->tm_hour, tm->tm_min, tz_h, tz_m, prefix); > } > > /** A printf-like function for logging. >