Ns time

<manpage>ns_time</manpage>

NAME

ns_time - Perform various time-related functions

SYNOPSIS

ns_time ?option? ?arg arg ...?

DESCRIPTION

This command provides various time-related functions. The legal options (which may be abbreviated) are:

• ns_time adjust time

Adjusts time so that it is within the valid range of values for a time. (TODO: Figure out how this is actually useful.)

• ns_time diff time1 time2

Computes the time difference between time1 and time2. It does this by subtracting time2 from time1 and returns a string in "sec:usec" format. Put the later time first to get the proper result.

• ns_time get

Returns the current time in "sec:usec" format.

• ns_time incr time sec ?usec?

Increments time by sec seconds and optionally usec microseconds. Returns a string in "sec:usec" format.

• ns_time make sec ?usec?

Returns a string in the form "sec:usec". usec defaults to zero. If usec is zero, the colon and usec are not returned. If sec is zero, however, it is returned as part of the time string.

• ns_time seconds time

Parses a time in "sec:usec" format and returns the seconds portion.

• ns_time microseconds time

Parses a time in "sec:usec" format and returns the microseconds portion. It assumes zero microseconds if time only contains seconds.

NOTES

All times are relative to 00:00:00 UTC, January 1, 1970 aka the Unix epoch. ns_time called with no option returns the current time in seconds.

EXAMPLES

   % ns_time
   1087006685

   % set time [ns_time get]
   1087013247:598897

   % ns_time seconds $time
   1087013247

   % ns_time microseconds $time
   598897

   % set time2 [ns_time incr $time 5 30]
   1087013252:598927

   % ns_set diff $time2 $time
   5:30

   % set time3 [ns_time make 1087013240 598890]
   1087013240:598890

   % ns_time diff $time $time3
   7:7

   % ns_time diff $time3 $time
   -8:999993

   % set time3 [ns_time incr $time3 7 7]
   1087013247:598897

   % ns_time diff $time $time3
   0

SEE ALSO

ns_fmttime, ns_gmtime, ns_httptime, ns_localtime, ns_parsehttptime, ns_parsetime