#!/bin/bash
# localtime - localtime plugin for postplug
# Copyright (c) 2004-2005 by Silvan Calarco <silvan.calarco@qilinux.it>
# Copyright (c) 2004-2007 by Davide Madrisan <davide.madrisan@qilinux.it>

[ -e /etc/localtime ] && exit 0

[ -r /etc/postplug/postplug.defs ] ||
 { echo "${0##*/}: error: cannot read postplug.defs" >> $logfile
   exit 1; }

. /etc/postplug/postplug.defs

tmpflt=`mktemp -q -t ${0##*/}.XXXXXXXX` ||
 { echo "${0##*/}: error: cannot create temporary files." >&2 >> $logfile
    { (exit 1); exit 1; }; }
tmpflt2=`mktemp -q -t ${0##*/}.XXXXXXXX` ||
 { echo "${0##*/}: error: cannot create temporary files." >&2 >> $logfile
    { (exit 1); exit 1; }; }

trap "rm -f $tmpflt $tmpflt2" 1 2 3 15

LOCALTIMEFILE=/etc/localtime
rootdir="/usr/share/zoneinfo"

# fixme: the following rootdirs are excluded:
#        Brazil Canada Chile Mexico Mieast US"
rootdirs='
   Africa
   America
   Antarctica
   Arctic
   Asia
   Atlantic
   Australia
   Europe
   Indian
   Pacific'

currdir=$rootdir
while :; do
   [ "$currdir" = "$rootdir" ] && unset extrabutton ||
      extrabutton="--extra-button --extra-label "$"Back"

   cat > $tmpflt2 << _EOF
      $DIALOG --colors \
         --cr-wrap --clear \
         --output-fd 4 \
         --exit-label _exit $extrabutton --clear \
         --begin 3 11 \
         --backtitle "$dialog_backtitle -- "$"Time zone selection" \
         --title $" TIME ZONE SELECTION " \
         --menu "
"$"Please select the local time zone for this system.""

"$"Use the \Z1UP\Zn/\Z1DOWN\
\Zn arrow keys to scroll through the whole \
list of choices." 20 60 9 \\
_EOF

   if [ "$currdir" = "$rootdir" ]; then
      for currzone in $rootdirs; do
         echo "${currzone##*/} \"\" \\" >> $tmpflt2
      done
   else
      #currlist=`find $currdir/* -maxdepth 0 -type d`
      for currzone in `find $currdir/* -maxdepth 0 -type f`; do
         [ -n "`grep "^TZif" $currzone`" ] &&
            #echo "${currzone##*/} \"$currzone\" \\" >> $tmpflt2
            echo "${currzone##*/} \"\" \\" >> $tmpflt2
      done
   fi
   echo " 4>$tmpflt" >> $tmpflt2

   [ -w /proc/splash ] && echo "verbose" > /proc/splash

   . $tmpflt2
   retval=$?

   rm -f $tmpflt2

   case $retval in
   0) choice="`cat $tmpflt`"
      [ $choice = "_exit" ] && clear && exit 1
      currdir="$currdir/$choice"

      if [ ! -d $currdir ]; then
         cp $currdir $LOCALTIMEFILE
         echo "$currdir" > /etc/timezone
         sed -i "s|$rootdir/||" /etc/timezone
         clear
         exit 0
      fi ;;
   3) currdir=${currdir%\/*} ;;
   *) clear; exit 1 ;;
   esac
done