/usr/share/doc/gawk/examples/lib/assert.awk is in gawk 1:4.1.4+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | # assert --- assert that a condition is true. Otherwise, exit.
#
# Arnold Robbins, arnold@skeeve.com, Public Domain
# May, 1993
function assert(condition, string)
{
if (! condition) {
printf("%s:%d: assertion failed: %s\n",
FILENAME, FNR, string) > "/dev/stderr"
_assert_exit = 1
exit 1
}
}
END {
if (_assert_exit)
exit 1
}
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