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# strftime.awk ; test the strftime code
#
# input is the output of `date', see Makefile.in
#
# The mucking about with $0 and $NF is to avoid problems
# on cygwin, where the timezone field is empty and there
# are two consecutive blanks.
BEGIN {
maxtries = 10
datecmd = "date"
fmt = "%a %b %d %H:%M:%S %Z %Y"
# loop until before equals after, thereby protecting
# against a race condition where the seconds field might have
# incremented between running date and strftime
i = 0
while (1) {
if (++i > maxtries) {
printf "Warning: this system is so slow that after %d attempts, we could never get two sequential invocations of strftime to give the same result!\n", maxtries > "/dev/stderr"
break
}
before = strftime(fmt)
datecmd | getline sd
after = strftime(fmt)
close(datecmd)
if (before == after) {
if (i > 1)
printf "Notice: it took %d loops to get the before and after strftime values to match\n", i > "/dev/stderr"
break
}
}
print sd > "strftime.ok"
$0 = after
$NF = $NF
print > OUTPUT
}
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