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glibc/timezone/yearistype
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#! /bin/sh | |
: 'This file is in the public domain, so clarified as of' | |
: '2006-07-17 by Arthur David Olson.' | |
: '@(#)yearistype.sh 8.2' | |
case $#-$1 in | |
2-|2-0*|2-*[!0-9]*) | |
echo "$0: wild year - $1" >&2 | |
exit 1 ;; | |
esac | |
case $#-$2 in | |
2-even) | |
case $1 in | |
*[24680]) exit 0 ;; | |
*) exit 1 ;; | |
esac ;; | |
2-nonpres|2-nonuspres) | |
case $1 in | |
*[02468][048]|*[13579][26]) exit 1 ;; | |
*) exit 0 ;; | |
esac ;; | |
2-odd) | |
case $1 in | |
*[13579]) exit 0 ;; | |
*) exit 1 ;; | |
esac ;; | |
2-uspres) | |
case $1 in | |
*[02468][048]|*[13579][26]) exit 0 ;; | |
*) exit 1 ;; | |
esac ;; | |
2-*) | |
echo "$0: wild type - $2" >&2 ;; | |
esac | |
echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2 | |
exit 1 |