#!/bin/bash
  #
  # 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.
  
  # To be run from one directory above this script.
  
  perl -e 'while(<>){ 
      s/\|(\d)/\| $1/g; s/(\d)\|/$1 \|/g;
      if (m/[WS]ER (\S+)/ && (!defined $bestwer || $bestwer > $1)){ $bestwer = $1; $bestline=$_; } # kaldi "compute-wer" tool.
      elsif (m: (Mean|Sum/Avg|)\s+\|\s*\S+\s+\S+\s+\|\s+\S+\s+\S+\s+\S+\s+\S+\s+(\S+)\s+\S+\s+\|:
          && (!defined $bestwer || $bestwer > $2)){ $bestwer = $2; $bestline=$_; } }  # sclite.
     if (defined $bestline){ print $bestline; } ' | \
    awk 'BEGIN{ FS="%WER"; } { if(NF == 2) { print FS$2" "$1; } else { print $0; }}' | \
    awk 'BEGIN{ FS="Sum/Avg"; } { if(NF == 2) { print $2" "$1; } else { print $0; }}' | \
    awk '{ if($1!~/%WER/) { print "%WER "$9" "$0; } else { print $0; }}' | \
    sed -e 's|\s\s*| |g' -e 's|\:$||' -e 's|\:\s*\|\s*$||'