#!/bin/bash
  
  # The script downloads and installs kaldi_lm
  
  set -e
  
  # Make sure we are in the tools/ directory.
  if [ `basename $PWD` == extras ]; then
    cd ..
  fi
  
  ! [ `basename $PWD` == tools ] && \
     echo "You must call this script from the tools/ directory" && exit 1;
  
  echo "Installing kaldi_lm"
  
  if [ ! -d "kaldi_lm" ]; then
    wget http://www.danielpovey.com/files/kaldi/kaldi_lm.tar.gz || exit 1;
    tar -xvzf kaldi_lm.tar.gz || exit 1;
  fi
  
  cd kaldi_lm
  make || exit 1;
  cd ..
  
  (
    set +u
  
    wd=`pwd`
    echo "export PATH=\$PATH:$wd/kaldi_lm"
  ) >> env.sh
  
  echo >&2 "Installation of kaldi_lm finished successfully"
  echo >&2 "Please source tools/env.sh in your path.sh to enable it"