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tools/sctk-2.4.10/src/csrfilt/csrfilt.sh 19 KB
8dcb6dfcb   Yannick Estève   first commit
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  #!/bin/sh
  #
  #  File:  csrfilt.sh
  #  Date:  September 15, 2010
  #  Usage: csrfilt.sh global-map-file [ utterance-map-file ] < infile > outfile
  #         Filter the input for stdin, and write the output to stdout
  #
  #  Desc:  This filter is used to "pre-filter" .lsn hypothesis and
  #          reference transcriptions to apply a set of word-mapping rules
  #          prior to scoring.  The word-mapping rules permit the 
  #          elimination of ambiguous lexical representations.  The
  #          filter applies the rules located in two word map files to the
  #          transcriptions.  The first word map file, "glYYMMDD.map",
  #          applies a set of rules globally to all transcriptions.  The
  #          second, "utYYMMDD.map", applies particular rules to particular
  #          utterances.  The two .map files are named so as to indicated
  #          the last date they were updated.
  #
  #         There are 2 stages to the filter:
  #         1.  Applies the utterance-specific, "utYYMMDD.map", rules to input. 
  # 		To accomplish this, the perl filter,
  #		'ut_rfilt.pl', is called which in turn calls rfilter1
  # 		on the specified utterances.
  #	  2.  Applies the global, 'glYYMMDD.map', rules to all utterances.
  #		
  #  Version 1.0 Feb 1, 1993
  #  Version 1.1 Sep. 21, 1995
  #       JGF added the option to automatically split hyphenated words
  #       JGF added the option to interpret ctm files appropriately
  #  Version 1.2 Oct. 20, 1995
  #       JGF added the ability to pass through comments un-scathed
  #       JGF changed the uppercase conversion to not effect comment lines
  #  Version 1.3 Jan 17, 1996
  #       JGF forced the script to add spaces to the end and beginning of each non-comment
  #           line before processing.  After processing, the spaces are deleted
  #  Version 1.4 Nov 24, 1996
  #       WMF replaced rfilter1 with a new version which runs faster, and can handle
  #           context sensitive rules
  #       JGF added a new input format STM
  #       JGF Made the glm file sensitive to the input type by using the notation:
  #           ;;  INPUT_DEPENDENT_APPLICATION = "<REGEXP>"
  #           anywhere in the glm file.  The <REGEXP> tag is a perl regular
  #           expression which is matched against the input type via the
  #           '-i' option.
  #  Version 1.5 Aug 4, 1997
  #       JGF added the "-i trn" option
  #       JGF modified all exit codes to be 0 on successful, completion 1 otherwise
  #  Version 1.6
  #       JGF made the utterance-map-file optional. . . finally
  #       JGF add the -s option
  #  Version 1.7
  #       JGF added the -e option to tell set the code to extended ascii
  #  Version 1.8 Released around April 1998
  #       JGF add the -i txt option
  #  Version 1.9 Released Sept 8. 1998
  #       JGF added filtering step to rfilter1 to use optionally deletable parens
  #       JGF removed a missed usage of sed!!!
  #  Version 1.10 
  #       JGF Added rttm input type
  #  Version 1.11
  #       JGF Removed the use of EXE_DIR.  All utilities are expected in the path
  #  Version 1.12
  #       JGF Rewrote the delete hypen processor
  #  Version 1.13
  #       JGF Fixed hyphen processor, fragment markers were deleted!
  #  Version 1.14 Apr 21, 2006
  #       JA  Update the rttm filtering to accept the asclite specifications
  #       JGF Fix the -dh option for rttm
  #  Version 1.15 Feb 9, 2007
  #       JGF Added the data purpose field so that the filtering can be contolled 
  #           based on if the texts are references ot hyps
  #  Version 1.16 Apr 30, 2009
  #       JGF Redesigned the code to no upcase everything, instead just the transcript
  #       JGF Fixed bug with delete hypthens on opt del words
  #  Version 1.17 Sep 15, 2010
  #       JGF - Fixed the trn preprocessor to pass through comment lines without filtering
  
  version="1.17"
  
  trap "/bin/rm -f /tmp/hs_filt.*.$$ ; exit 1" 1 2 3 15
  
  # Change to the installation directory in order to execute from 
  # any where other than the installation directory.
  DeleteHyphens=false
  UpCase=true;
  ExtASCII=false;
  
  Usage="Usage: csrfilt.sh [ -dh -s -e ] -i [ stm | ctm | trn | txt | rttm ] global-map-file [ utterance-map-file ] < infile > outfile
  Version: $version
  Desc: csrfilt.sh applys a set of text transformation rules contained in 
        'global-map-file' and the optional 'utterance-map-file' to the input
        text.  The text input is read from stdin and the modified text goes to stdout.
  
        The file 'rules.doc' within the distribution directory describes the
        rule file format.
  
      -dh     ->  replaces hyphens with spaces in hyphenated words
      -i ctm  ->  set the input type to ctm.  If a word from a ctm file is
                  split, the script divides the original word's duration among
  		it's constituents.
      -i stm  ->  sets the input type to stm.  This forces the mapping rules to
  		apply to the text field only.
      -i trn  ->  sets the input type to trn.  This forces the mapping rules to
  		apply to the text portion of the trn record.  (Default)
      -i txt  ->  sets the input type to txt, no formatting, all words are fair game.
      -i rttm ->  sets the input type to rttm.
      -s      ->  do not up-case everything
      -e      ->  textual data is extended ASCII
      -t [ref|hyp] -> sets the input type either reference data or hyp data so that
                  the rule-sets within the GLM can be activated"
  
  
  inputtype="trn"
  dataPurpose=""
  while test ! "`echo $1| egrep '^-'`" = "" ; do
      if test "$1" = "-dh" ; then
  	DeleteHyphens=true
      elif test "$1" = "-s" ; then
  	UpCase=false
      elif test "$1" = "-e" ; then
  	ExtASCII=true
      elif test "$1" = "-i" ; then
  	if test "$2" = "ctm" -o "$2" = "stm" -o "$2" = "trn" -o "$2" = "txt" -o "$2" = "rttm" ; then
  	    inputtype=$2
  	    shift
  	else
  	    echo "$Usage"
  	    echo "$2"
  	    echo "Error: -i option requires either \"ctm\", \"stm\", \"txt\", \"trn\", or \"rttm\" not $2"
  	    exit 1
  	fi
      elif test "$1" = "-t" ; then
  	if test "$2" = "ref" -o "$2" = "hyp" ; then
  	    dataPurpose=$2
  	    shift
  	else
  	    echo "$Usage"
  	    echo "$2"
  	    echo "Error: -i option requires either \"ref\", or \"hyp\" not $2"
  	    exit 1
  	fi
      else
  	echo "$Usage"
  	echo ""
  	echo "Error: Unrecognized option $1"
  	 exit 1
      fi
      shift;
  done
  
  if test $# -lt 1 -o $# -gt 2 ; then
  	echo "$Usage"
  	echo ""
  	echo "Error: requires one or two command line arguements"
  	exit 1
  fi
  
  glob_map=$1
  if test ! -f "$glob_map" ; then
  	echo "$Usage"
  	echo ""
  	echo "Error: Global-map-file '$glob_map' does not exist"
  	exit 1
  fi
  
  if test $# -eq 2 ; then
  	utt_map=$2
  	if  test ! -f "$utt_map" ; then
  		echo "$Usage"
  		echo ""
  		echo "Error: Utterance-map-file '$utt_map' does not exist"
  		exit 1
  	fi
  else
  	utt_map=""
  fi
  
  
  ############################################################################################
  ###  Validation functions  #################################################################
  
  getInvalidOptDelTags(){
      perl -ne 's/\(/   \(/g; s/\)/\)  /; s/\s\([^\(\)]+\)//g; if ($_ =~ /[()]/) { print }'
  }
  
  ############## Validate that optionally deleteable tags are consistent ######
  validateOptDelTags(){
      res=`perl -ne 's/\(/   \(/g; s/\)/\)  /; s/\s\([^\(\)]+\)//g; if ($_ =~ /[()]/) { print }'`
      if [ "$res" = "" ] ; then
  	echo "valid"
      else
  	echo "error"
      fi
  }
  
  
  
  ############### The text to filter is now fully separated from the non-transcript material  ########
  ###############  Filtering is now MUCH EASIER ###############
  
  ### Uppercase just the text if requested
  toUpper(){
      perl -pe 'if ($_ !~ /^;;/){
  		    if ("'$UpCase'" eq "true") { 
  			    tr/a-z/A-Z/; 
  			    if ("'$ExtASCII'" eq "true") { tr/\340-\377/\300-\337/; }
  		    }
  	      }'
  }
  
  deleteHyphens(){
      perl -pe 'if ("'$DeleteHyphens'" eq "true"){ 
  		  s/([^\( ])-(?=[^\) ])/$1 /g; 
  	      }'
  }
  
  propogateOptDel(){
      perl -e 'my $count = 0;
  	      while (<>){
  		  while ($_ =~ s/(\(\s+[^()\s]+\s+)([^()\s]+)/$1\) \( $2/){
  		      ;
  		  }
  		  print;
                }'    
  }
  
  propUnitTestSub(){
      isValid=$1
      txt="$2"
      exp="$3"
      resValid=`echo "$txt" | perl -pe 's/\(\s+/(/g; s/\s+\)/)/g' | validateOptDelTags`
  
      if [ "$isValid" = 1 -a "$resValid" = "error" ] ; then
  	echo "Error: Valid optDel failed validation /$txt/ with /$resValid/ return" 
      fi
      if [ "$isValid" = 0 -a "$resValid" = "valid" ] ; then
  	echo "Error: INValid optDel passed validation /$txt/ with /$resValid/ return" 
      fi
  
      res=`echo "$txt" | propogateOptDel`
      if [ ! "$exp" = "$res" ] ; then
  	echo "Failed: /$res/ != expected /$exp/" 
      else
  	echo "Passed: /$txt/ -> /$res/" 
      fi
  }
  
  propUnitTest(){
      propUnitTestSub 1 " she is "    " she is "
  
      propUnitTestSub 0 " ( she is "  " ( she ) ( is "
      propUnitTestSub 0 " she ( is "  " she ( is "
      propUnitTestSub 0 " she is ( "  " she is ( "
  
      propUnitTestSub 0 " ) she is "  " ) she is "
      propUnitTestSub 0 " she ) is "  " she ) is "
      propUnitTestSub 0 " she is ) "  " she is ) "
  
      propUnitTestSub 0 " (( she is "  " (( she ) ( is "
      propUnitTestSub 0 " she (( is "  " she (( is "
      propUnitTestSub 0 " she is (( "  " she is (( "
  
      propUnitTestSub 0 " ) she is "  " ) she is "
      propUnitTestSub 0 " she ) is "  " she ) is "
      propUnitTestSub 0 " she is ) "  " she is ) "
  
      propUnitTestSub 0 " she ( is ok yes no she ( is ok yes ) no "  " she ( is ) ( ok ) ( yes ) ( no ) ( she ( is ) ( ok ) ( yes ) no " 
  
      propUnitTestSub 1 " ( she ) is ok "  " ( she ) is ok " 
      propUnitTestSub 1 " she ( is ) ok "  " she ( is ) ok " 
      propUnitTestSub 1 " she is ( ok ) "  " she is ( ok ) " 
  
      propUnitTestSub 1 " ( she is ) ok yes " " ( she ) ( is ) ok yes " 
      propUnitTestSub 1 " she ( is ok ) yes "  " she ( is ) ( ok ) yes " 
      propUnitTestSub 1 " she is ( ok yes ) "  " she is ( ok ) ( yes ) " 
  
      propUnitTestSub 1 " she is ( ok yes no ) she is ( ok yes no ) "  " she is ( ok ) ( yes ) ( no ) she is ( ok ) ( yes ) ( no ) " 
      propUnitTestSub 1 " ( she is ok ) yes no ( she is ok ) yes no "  " ( she ) ( is ) ( ok ) yes no ( she ) ( is ) ( ok ) yes no " 
      propUnitTestSub 1 " she ( is ok yes ) no she ( is ok yes ) no "  " she ( is ) ( ok ) ( yes ) no she ( is ) ( ok ) ( yes ) no " 
  
  }
  
  
   ###################################################################################################
  #propUnitTest; exit
  
  #########################  HERE document to convert expanded CTMs to alternations  #################
  cat > /tmp/hs_filt.ctm.$$ << EOF
    while (<>){
      if (\$_ =~ /^;;/) {print} 
      else {
  	s/^\s+//;
  	s/([{}])/ \1 /g;
  	@l = split;
  	if (\$#l == 4) {print}
  	else {
  	    if (\$l[\$#l] =~ /^[0-9\.-]*\$/) {\$limit=\$#l-1;\$conf=\$l[\$#l]} 
  	    else {                         \$limit=\$#l;\$conf=""} ; 
  
  	    \$data = join(" ",splice(@l,4,\$limit - 4 + 1));
  	    @sets = split(/\//,\$data);
  	    if (\$#sets > 0) {
  		printf "%s %s * * %s <ALT_BEGIN>
  ",\$l[0],\$l[1],\$word,\$conf;
  	    }
  	    for (\$sn = 0; \$sn <= \$#sets; \$sn++){
  		\$set = \$sets[\$sn];
  		\$set =~ s/[{}]//g;
  		\$set =~ s/^\s+//;
  		@words = split(/\s+/,\$set);
  		\$dur = \$l[3] / (\$#words + 1);
  		\$i=0;
  		foreach \$word(@words){
  		    printf "%s %s %.3f %.3f %s %s
  ",\$l[0],\$l[1],\$l[2]+(\$dur * \$i),\$dur,\$word,\$conf;
  		    \$i ++;
  		}
  		if (\$#sets > 0 && \$sn != \$#sets){
  		    printf "%s %s * * %s <ALT>
  ",\$l[0],\$l[1],\$word,\$conf;
  		}
  	    }
  	    if (\$#sets > 0) {
  		printf "%s %s * * %s <ALT_END>
  ",\$l[0],\$l[1],\$word,\$conf;
  	    }
  	}
      }
    }
  EOF
  
  
  ################################################################################
  #############   Beginnning of Main Program       ###############################
  
  # capture and clean up the input
  perl -pe 'if ($_ !~ /^;;/) {
    	     s/^/ /; s/$/ /; s/[ \t]+/ /g; 
             }' > /tmp/hs_filt.orig.$$
  
  #########################################################################
  ####   Step 1: separate out the text from the other data in the file ####
  
  # automatically modify the global mapping file to only include regions
  # which apply to the input type.
  
  cat $glob_map | perl -e '
  	($type="'$inputtype'") =~ tr/A-Z/a-z/;
  	($dataPurpose="'$dataPurpose'") =~ tr/A-Z/a-z/;
  	$applies = 1;
  	while (<>){
  		if ($_ =~ /^;;\s+INPUT_DEPENDENT_APPLICATION\s*=\s*\"([^\"]*)\"/){
  			($exp = $1) =~ tr/A-Z/a-z/;
  			$applies = 0;
  			if ($type =~ /$exp/){ $applies = 1; }
  			if ($dataPurpose =~ /$exp/){ $applies = 1; }
  		}
  		if ($applies == 1){	print;		}
  	} ' >  /tmp/hs_filt.glm.$$
  
  # perform the filter on the utterance specific rules
  if test "$inputtype" = "ctm" ; then
      cat /tmp/hs_filt.orig.$$ | \
  	perl -e '$out1 = "'/tmp/hs_filt.outext.$$'";  $out2 = "'/tmp/hs_filt.out.$$'"; 
  		 open(IN,"<-") || die("Error: failed to open input stm file");
  		 open(OUT1,">$out1") || die("Error: failed to open output \"$out1\" of the stm file");
  		 open(OUT2,">$out2") || die("Error: failed to open output \"$out2\" of the stm file");
  		 while(<IN>){
  			 if ($_ =~ /^;;/) { 
  				 print OUT1 $_; 
  				 print OUT2 "
  ";
  			 } else {
  				 @a = split(/\s+/, $_);
  				 print OUT2 splice(@a,5,1)."
  ";
  				 print OUT1 join(" ",@a)."
  ";
  			 }
  		 }
  		 close IN; close OUT1; close OUT2;'
  elif test "$inputtype" = "rttm" ; then
      cat /tmp/hs_filt.orig.$$ | \
  	perl -e '$out1 = "'/tmp/hs_filt.outext.$$'";  $out2 = "'/tmp/hs_filt.out.$$'"; 
  		 open(IN,"<-") || die("Error: failed to open input stm file");
  		 open(OUT1,">$out1") || die("Error: failed to open output \"$out1\" of the stm file");
  		 open(OUT2,">$out2") || die("Error: failed to open output \"$out2\" of the stm file");
  		 while(<IN>){
  			 if ($_ !~ /^ LEXEME.* (lex|fp|un-lex|for-lex|alpha|acronym|interjection|propernoun|other) /) { 
  				 print OUT1 $_; 
  				 print OUT2 "
  ";
  			 } else {
  				 @a = split(/\s+/, $_);
  				 print OUT2 splice(@a,6,1)."
  ";
  				 print OUT1 join(" ",@a)."
  ";
  			 }
  		 }
  		 close IN; close OUT1; close OUT2;'
  elif test "$inputtype" = "stm" ; then
  	cat /tmp/hs_filt.orig.$$ | \
  	perl -e '$out1 = "'/tmp/hs_filt.outext.$$'";  $out2 = "'/tmp/hs_filt.out.$$'"; 
  		 open(IN,"<-") || die("Error: failed to open input stm file");
  		 open(OUT1,">$out1") || die("Error: failed to open output \"$out1\" of the stm file");
  		 open(OUT2,">$out2") || die("Error: failed to open output \"$out2\" of the stm file");
  		 while(<IN>){
  			 if ($_ =~ /^;;/) { 
  				 print OUT1 $_; 
  				 print OUT2 "
  ";
  			 } elsif ($_ =~ /^(\s*\S+\s*\S+\s*\S+\s*\S+\s*\S+\s*<\S+>)(.*)$/){
  				 print OUT1 $1."
  ";
  				 print OUT2 $2."
  ";
  			 } elsif ($_ =~ /^(\s*\S+\s*\S+\s*\S+\s*\S+\s*\S+)(.*)$/){
  				 print OUT1 $1."
  ";
  				 print OUT2 $2."
  ";		
  			 } else {
  				 die("Error: Parse of stm line failed");
  			 }
  		 }
  		 close IN; close OUT1; close OUT2;'
  elif test "$inputtype" = "trn" ; then
           cat /tmp/hs_filt.orig.$$ | \
  	 perl -e '$out1 = "'/tmp/hs_filt.outext.$$'";  $out2 = "'/tmp/hs_filt.out.$$'"; 
  		 open(IN,"<-") || die("Error: failed to open input stm file");
  		 open(OUT1,">$out1") || die("Error: failed to open output \"$out1\" of the stm file");
  		 open(OUT2,">$out2") || die("Error: failed to open output \"$out2\" of the stm file");
  		 while(<IN>){
  			 if ($_ =~ /^;;/) { 
  				 print OUT1 $_; 
  				 print OUT2 "
  ";
  			 } elsif ($_ =~ /^(.*)(\(.*\))\s*$/){
  				 print OUT2 $1."
  ";
  				 print OUT1 $2."
  ";
  			} else {
  				die("Error: Parse of trn line failed");
  			}
  		}
  		close IN; close OUT1; close OUT2; '
  		# echo "outext "; cat /tmp/hs_filt.outext.$$
  		# echo "out"; 	cat /tmp/hs_filt.out.$$
  elif test "$inputtype" = "txt" ; then
  	 cat /tmp/hs_filt.orig.$$ | \
  	 perl -e '$out1 = "'/tmp/hs_filt.outext.$$'";  $out2 = "'/tmp/hs_filt.out.$$'"; 
  		 open(IN,"<-") || die("Error: failed to open input stm file");
  		 open(OUT1,">$out1") || die("Error: failed to open output \"$out1\" of the stm file");
  		 open(OUT2,">$out2") || die("Error: failed to open output \"$out2\" of the stm file");
  		 while(<IN>){
  			 if ($_ =~ /^;;/) { 
  				 print OUT1 $_; 
  				 print OUT2 "
  ";
  			 } else {
  				 print OUT1 "
  ";
  				 print OUT2 $_;
   			 }
  		}
  		close IN; close OUT1; close OUT2; '
  		# echo "outext "; cat /tmp/hs_filt.outext.$$
  		# echo "out"; 	cat /tmp/hs_filt.out.$$
  else 
  	if test ! "$utt_map" = "" ; then
  	        ut_rfilt.pl $utt_map /tmp/hs_filt.orig.$$ \
  			/tmp/hs_filt.out.$$
  	else 
  		cp /tmp/hs_filt.orig.$$ /tmp/hs_filt.out.$$
  	fi
  fi
  
  ############################################################################################
  ####   Step 2: Check the optionally deletable tags.  The code relies on them being valid
  
  ret="`cat /tmp/hs_filt.out.$$ | perl -pe 's/\(/( /g; s/\)/ )/g; s/^/ /; s/$/ /;' | validateOptDelTags`"
  if [ $ret = "error" ] ; then
      echo "Error: Can not filter text with illegally formatted optional deletion tags.  Look for:"
      cat /tmp/hs_filt.out.$$ | perl -pe 's/\(/( /g; s/\)/ )/g; s/^/ /; s/$/ /;' | getInvalidOptDelTags
      exit 1
  fi
  
  
  
  #########################################################################
  ####   Step 3: Build the filter command
  
  filt_com="cat /tmp/hs_filt.out.$$ | toUpper | perl -pe 's/\(/( /g; s/\)/ )/g; s/^/ /; s/$/ /;' | rfilter1 /tmp/hs_filt.glm.$$ | deleteHyphens | propogateOptDel | perl -pe 's/^ //; s/ $//' | perl -pe 's/\(\s+/(/g; s/\s+\)/)/g;' | tee /tmp/hs_filt.filtout."$$" "
  
  #########################################################################################
  ####   Step 4: execute the filter command putting back together the text and other data
  
  if test "$inputtype" = "ctm" ; then
  	eval $filt_com | \
  	    perl -e '$inext = "'/tmp/hs_filt.outext.$$'";
  		open(IN,"<$inext") || die("Error: failed to open input \"$out1\" of the stm file");
  		while (! eof(STDIN)){
  			$text = <STDIN>;
  			chomp($text);
  			$ext = <IN>;
  			if ($text ne ""){
  				@a = split(/\s+/,$ext);
  				splice(@a, 5, 0, $text);
  				$ext = join(" ",@a)."
  ";
  			}
  			print $ext;
  		}
  		close IN' | \
  	    perl /tmp/hs_filt.ctm.$$ | \
  	    perl -pe 'if ($_ !~ /^;/) {s/^[ \t]+//; s/[ \t]+$//; s/[ \t]+/ /g}'
  elif test "$inputtype" = "rttm" ; then
      # the first perl command handles converting alternations and duel words to underscore notation
  	eval $filt_com | \
  	    perl -pe 'chomp; if ($_ =~ /\s/){s/([\{\}\/\@])/ $1 /g; s/\s+/ /g; s/^\s//; s/\s$//; s/\s/_/g; } $_ .= "
  "' | \
  	    perl -e '$inext = "'/tmp/hs_filt.outext.$$'";
  		open(IN,"<$inext") || die("Error: failed to open input \"$out1\" of the stm file");
  		while (! eof(STDIN)){
  			$text = <STDIN>;
  			chomp($text);
  			$ext = <IN>;
  			if ($text ne ""){
  				@a = split(/\s+/,$ext);
  				splice(@a, 6, 0, $text);
  				$ext = join(" ",@a)."
  ";
  			}
  			print $ext;
  		}
  		close IN' | \
  	    perl -pe 'if ($_ !~ /^;/) {s/^[ \t]+//; s/[ \t]+$//; s/[ \t]+/ /g}'
  elif test "$inputtype" = "stm" ; then
  	eval $filt_com | \
  	perl -e '$inext = "'/tmp/hs_filt.outext.$$'";
  		open(IN,"<$inext") || die("Error: failed to open input \"$out1\" of the stm file");
  		while (! eof(STDIN)){
  			$text = <STDIN>;
  			$ext = <IN>;
  			chop($ext);
  			print "$ext$text";
  		}
  		close IN' | \
  	perl -pe 'if ($_ !~ /^;/) {s/^[ \t]+//; s/[ \t]+$//; s/[ \t]+/ /g}'
  elif test "$inputtype" = "trn" ; then
  	eval $filt_com | \
  	perl -e '$inext = "'/tmp/hs_filt.outext.$$'";
  		open(IN,"<$inext") || die("Error: failed to open input \"$out1\" of the trn file");
  		while (! eof(STDIN)){
  			$text = <STDIN>;
  			$ext = <IN>;
  			chomp($text);
  			print "$text$ext";
  		}
  		close IN' | \
  	perl -pe 'if ($_ !~ /^;/) {s/^[ \t]+//; s/[ \t]+$//; s/[ \t]+/ /g}'
  else
  	eval $filt_com | \
  	perl -pe 'if ($_ !~ /^;/) {s/^[ \t]+//; s/[ \t]+$//; s/[ \t]+/ /g}'
  fi
  
  
  # clean up
  /bin/rm -f /tmp/hs_filt.*.$$
  
  exit 0