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Full Discussion: calcuate the week number of a given date
Top Forums Shell Programming and Scripting calcuate the week number of a given date Post 83004 by ahmedwaseem2000 on Friday 9th of September 2005 07:04:14 AM
Old 09-09-2005
Guys got the solution - i have added this if statement before calculation. please let me know if you find this is not good.

Code:
# !/bin/ksh

calcweek() {
if [ $LEAP -eq 0 ] ; then
   set -A DIM 0 0 31 59 90 120 151 181 212 243 273 304 334
else
   set -A DIM 0 0 31 60 91 121 152 182 213 244 274 305 335
fi
if [ $DD -eq 08 ];then
DD=8
elif [ $DD -eq 09 ];then
DD=9
fi
((JDAY=DIM[$MM]+DD))
echo $DD day $MM mon
echo $JDAY
((WEEK=(JDAY+$1)/7))
echo $YEAR-$WEEK
}

MM=$1
DD=$2
YEAR=$3

MMDD=$MM$DD
typeset -Z2 WEEK

((YEAR%100)) && ((LEAP=!(YEAR%4))) || ((LEAP=!(YEAR%400)))

cal 01 $YEAR |
  awk '{getline;getline;print NF;exit}' |
  read W1K

case $W1K$LEAP in
  70)  echo '0101 52 9999 5' ;;
  10)  echo '0102 XX 9999 4' ;;
  20)  echo '0103 53 9999 3' ;;
  30)  echo '0000 00 9999 9' ;;
  40)  echo '0000 00 1229 8' ;;
  50)  echo '0000 00 1230 7' ;;
  60)  echo '0000 00 1231 6' ;;
  71)  echo '0101 52 1231 5' ;;
  11)  echo '0102 52 9999 4' ;;
  21)  echo '0103 53 9999 3' ;;
  31)  echo '0000 00 9999 9' ;;
  41)  echo '0000 00 9999 8' ;;
  51)  echo '0000 00 1229 7' ;;
  61)  echo '0000 00 1230 6' ;;
esac | read JCUT PWK DCUT ADJ

if [ $MMDD -le $JCUT ] ; then
   if [ $PWK = 'XX' ] ; then
      ((PYEAR=YEAR-1))
      ((PYEAR%100)) && ((PLEAP=!(PYEAR%4))) || ((PLEAP=!
(PYEAR%400)))
      ((PWK=52+PLEAP))
   fi
   echo $((YEAR=YEAR-1))-$PWK
else
   if [ $MMDD -ge $DCUT ] ; then
      echo $((YEAR=YEAR+1))-01
   else
      calcweek $ADJ
   fi
fi

exit 0

Last edited by Perderabo; 09-09-2005 at 02:06 PM.. Reason: Switch quote tags to code tags for readability
 

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LEARN ABOUT SUSE

dp

DP(8)                                                                [nmh-1.5]                                                               DP(8)

NAME

       dp - parse dates 822-style

SYNOPSIS

       /usr/lib/mh/dp [-form formatfile] [-format string] [-width columns] [-version] [-help] dates ...

DESCRIPTION

       Dp  is  a  program that parses dates according to the ARPA Internet standard.  It also understands many non-standard formats, such as those
       produced by TOPS-20 sites and some UNIX sites using ctime(3).  It is useful for seeing how nmh will interpret a date.

       The dp program treats each argument as a single date, and prints the date out in the official 822-format.  Hence, it  is  usually  best  to
       enclose each argument in quotes for the shell.

       To  override  the  output  format  used by dp, the -format string or -format file switches are used.  This permits individual fields of the
       address to be extracted with ease.  The string is simply a format string and the file is simply a format file.  See  mh-format(5)  for  the
       details.

       Here is the default format string used by dp:

            %<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>

       which  says  that  if an error was detected, print the error, a `:', and the date in error.  Otherwise, output the 822-proper format of the
       date.

FILES

       $HOME/.mh_profile          The user profile

PROFILE COMPONENTS

       None

SEE ALSO

       ap(8), Standard for the Format of ARPA Internet Text Messages (RFC-822)

DEFAULTS

       `-format' default as described above
       `-width' default to the width of the terminal

CONTEXT

       None

BUGS

       The argument to the -format switch must be interpreted as a single token by the shell that invokes dp.  Therefore, one must  usually  place
       the argument to this switch inside quotes.

MH.6.8                                                             11 June 2012                                                              DP(8)
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