#!/bin/sh
# Generate updated software list
# BSD License. Copyright (C) by Rashid N. "CityCat" Achilov
# $Id: genupdlist,v 1.1.1.1 2008/01/20 21:10:58 shelton Exp $

# Output file name
outfile="/tmp/portlist"

# Test output file on existance and ability to write
if [ -e $outfile ]; then
  if [ ! -O $outfile ]; then
    echo "Output file exist and owned by another user"
    exit
   else
     rm -f $outfile
  fi
fi

# Print header (hostname and date)
echo "Obsoleted packages on `hostname` at `date`"
echo "----------------------------------------------------------------------"
echo ""

# Take updating caididates list
file=`pkg_version -v | grep updating`

saveifs=$IFS
newline="
"

IFS=$newline

for one in $file
 do

# $1 is old package name and version, $7 is new package version
   IFS=$saveifs
   set $one

# Strip out package name
   oldverx=${1##*-}

# Strip out '_' in version, if any
   oldverz=${oldverx%%_*}

# Strip out '.' in version, if any. Result: version 1.22.33_4,5 strips to 1.22.33
   oldvery=${oldverz%%,*}

# Strip out ')' in version
   newverx=${7%%)}

# Similar old version, strip out '_' and ',' in version, if any
   newverz=${newverx%%_*}
   newvery=${newverz%%,*}

# Compare versions
   if [ ! $oldvery = $newvery ]; then

# Calculate package name string length and output it
     xx=${1%-*}
     len=${#xx}
     echo -n $xx
     echo $xx >> $outfile

# Output package old version with appropriate quantity of separators
     if [ $len -lt 8 ]; then
       printf "\t\t\t\t%s" $oldvery
      elif [ $len -ge 8 ] && [ $len -lt 16 ]; then
          printf "\t\t\t%s" $oldvery
        elif [ $len -ge 16 ] && [ $len -lt 24 ]; then
            printf "\t\t%s" $oldvery
           else
             printf "\t%s" $oldvery
     fi

# Calculate old version string length
     len=${#oldvery}

# Output old version string with appropriate quantity of separators
     if [ $len -le 7 ]; then
       printf "\t\t%s\n" $newvery
      else
        printf "\t%s\n" $newvery
     fi
   fi

   IFS=$newline
 done