#! /bin/sh

v=20200406

s=texlive-$v-source.tar.xz

p=${s%.tar.xz}

# get the texlive original source

if [ ! -f $s ] ; then

  echo download $s, please wait...

  wget https://ftp.tu-chemnitz.de/pub/tug/historic/systems/texlive/2020/$s

  if [ ! -f $s ] ; then

    echo download $s failed!

    exit 1

  fi

fi

# remove old source

if [ -d $p ] ; then

  rm -fr $p

fi

echo extracting the $s...

if ( ! tar Jxf $s ) ; then

  echo $s failed, cannot be extracted

  exit 1

fi

# remove files with bad licenses, don't embeded zziplib but build with system lib

rm -rf $p/libs/zziplib

rm -rf $p/texk/ps2pk

# create clean texlive source

echo create the clean texlive source, please wait...

if ( tar Jcf $p-clean.tar.xz $p) ; then

  echo clean texlive source $p-clean.tar.xz is created.

else

  echo failed, clean texlive source $p-clean.tar.xz cannot be created.

fi