#!/bin/bash
  
  # Copyright 2010-2012 Microsoft Corporation  Johns Hopkins University (Author: Daniel Povey)
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #  http://www.apache.org/licenses/LICENSE-2.0
  #
  # THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  # WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  # MERCHANTABLITY OR NON-INFRINGEMENT.
  # See the Apache 2 License for the specific language governing permissions and
  # limitations under the License.
  
  # Call this script from one level above, e.g. from the s3/ directory.  It puts
  # its output in data/local/.
  
  # The parts of the output of this that will be needed are
  # [in data/local/dict/ ]
  # lexicon.txt
  # extra_questions.txt
  # nonsilence_phones.txt
  # optional_silence.txt
  # silence_phones.txt
  
  # run this from ../
  dir=data/local/dict
  mkdir -p $dir
  
  
  # (1) Get the CMU dictionary
  svn co  https://svn.code.sf.net/p/cmusphinx/code/trunk/cmudict \
    $dir/cmudict || exit 1;
  
  # can add -r 10966 for strict compatibility.
  
  
  #(2) Dictionary preparation:
  
  
  # Make phones symbol-table (adding in silence and verbal and non-verbal noises at this point).
  # We are adding suffixes _B, _E, _S for beginning, ending, and singleton phones.
  
  # silence phones, one per line.
  (echo SIL; echo SPN; echo NSN) > $dir/silence_phones.txt
  echo SIL > $dir/optional_silence.txt
  
  # nonsilence phones; on each line is a list of phones that correspond
  # really to the same base phone.
  cat $dir/cmudict/cmudict.0.7a.symbols | perl -ane 's:\r::; print;' | \
   perl -e 'while(<>){
    chop; m:^([^\d]+)(\d*)$: || die "Bad phone $_"; 
    $phones_of{$1} .= "$_ "; }
    foreach $list (values %phones_of) {print $list . "
  "; } ' \
    > $dir/nonsilence_phones.txt || exit 1;
  
  # A few extra questions that will be added to those obtained by automatically clustering
  # the "real" phones.  These ask about stress; there's also one for silence.
  cat $dir/silence_phones.txt| awk '{printf("%s ", $1);} END{printf "
  ";}' > $dir/extra_questions.txt || exit 1;
  cat $dir/nonsilence_phones.txt | perl -e 'while(<>){ foreach $p (split(" ", $_)) {
    $p =~ m:^([^\d]+)(\d*)$: || die "Bad phone $_"; $q{$2} .= "$p "; } } foreach $l (values %q) {print "$l
  ";}' \
   >> $dir/extra_questions.txt || exit 1;
  
  grep -v ';;;' $dir/cmudict/cmudict.0.7a | \
   perl -ane 'if(!m:^;;;:){ s:(\S+)\(\d+\) :$1 :; print; }' \
    > $dir/lexicon1_raw_nosil.txt || exit 1;
  
  # Add to cmudict the silences, noises etc.
  
  (echo '!SIL SIL'; echo '<SPOKEN_NOISE> SPN'; echo '<UNK> SPN'; echo '<NOISE> NSN'; ) | \
   cat - $dir/lexicon1_raw_nosil.txt  | uniq > $dir/lexicon2_raw.txt || exit 1;
  
  
  # lexicon.txt is without the _B, _E, _S, _I markers.
  # This is the input to wsj_format_data.sh
  cp $dir/lexicon2_raw.txt $dir/lexicon.txt
  
  
  echo "Dictionary preparation succeeded"