#!/usr/bin/env perl
  # Copyright 2010-2011 Microsoft Corporation
  
  # 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.
  
  
  # creates integer lists of silence and non-silence phones in files,
  # e.g. silphones.csl="1:2:3 
  "
  # and nonsilphones.csl="4:5:6:7:...:24
  ";
  
  if(@ARGV != 4) {
      die "Usage: silphones.pl phones.txt \"sil1 sil2 sil3\" silphones.csl nonsilphones.csl";
  }
  
  ($symtab, $sillist, $silphones, $nonsilphones) = @ARGV;
  open(S,"<$symtab") || die "Opening symbol table $symtab";
  
  
  foreach $s (split(" ", $sillist)) {
      $issil{$s} = 1;
  }
  
  @sil = ();
  @nonsil = ();
  while(<S>){
      @A = split(" ", $_);
      @A == 2 || die "Bad line $_ in phone-symbol-table file $symtab";
      ($sym, $int) = @A;
      if($int != 0) {
          if($issil{$sym}) { push @sil, $int; $seensil{$sym}=1; }
          else { push @nonsil, $int; }
      }
  }
  
  foreach $k(keys %issil) {
      if(!$seensil{$k}) { die "No such silence phone $k"; }
  }
  open(F, ">$silphones") || die "opening silphones file $silphones";
  open(G, ">$nonsilphones") || die "opening nonsilphones file $nonsilphones";
  print F join(":", @sil) . "
  ";
  print G join(":", @nonsil) . "
  ";
  close(F);
  close(G);
  if(@sil == 0) { print STDERR "Warning: silphones.pl no silence phones.
  " }
  if(@nonsil == 0) { print STDERR "Warning: silphones.pl no non-silence phones.
  " }