#! /bin/bash

TMPDIR="/tmp"

# change into g-octave-db directory
cd $(grep "^db" /etc/g-octave.cfg | cut -f 2 -d "=") 

# parse packages page
wget -qO - http://octave.sourceforge.net/packages.php | grep tar.gz | cut -f 4 -d '"' | \
while read 
do
 name=${REPLY##*/} 
 name=${name%.tar.gz*} 
 fname=${TMPDIR}/${name}.tar.gz 

 wget -qO "$fname" "$REPLY" 
 desc=$(tar tzf "$fname" | grep "DESCRIPTION$") 

 # extract description
 tar xzf "$fname" "$desc" 

 dir="$(find octave-forge -name "${name%-*}" -type d)" 
 dir="${dir:=octave-forge/main/${name%-*}}" 
 mkdir -p "$dir" 

 # update g-octave-db with extracted description
 mv -v "$desc" "${dir}/${name%.tar.gz}.DESCRIPTION" 

 rm -rf "${desc%/*}" 
 rm "$fname" 
done