contrib/tzdata/yearistype.sh

   1 #! /bin/sh
   2 : 'Determine whether year is of appropriate type (this file is obsolete).'
   3
   4 : 'This file is in the public domain, so clarified as of'
   5 : '2006-07-17 by Arthur David Olson.'
   6
   7 case $#-$1 in
   8         2-|2-0*|2-*[!0-9]*)
   9                 echo "$0: wild year: $1" >&2
  10                 exit 1 ;;
  11 esac
  12
  13 case $#-$2 in
  14         2-even)
  15                 case $1 in
  16                         *[24680])                       exit 0 ;;
  17                         *)                              exit 1 ;;
  18                 esac ;;
  19         2-nonpres|2-nonuspres)
  20                 case $1 in
  21                         *[02468][048]|*[13579][26])     exit 1 ;;
  22                         *)                              exit 0 ;;
  23                 esac ;;
  24         2-odd)
  25                 case $1 in
  26                         *[13579])                       exit 0 ;;
  27                         *)                              exit 1 ;;
  28                 esac ;;
  29         2-uspres)
  30                 case $1 in
  31                         *[02468][048]|*[13579][26])     exit 0 ;;
  32                         *)                              exit 1 ;;
  33                 esac ;;
  34         2-*)
  35                 echo "$0: wild type: $2" >&2 ;;
  36 esac
  37
  38 echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2
  39 exit 1