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Created: Mon, Mar 10, 12:52 AM

spellchecker.pl
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	#!/usr/bin/perl

	use CGI qw/ :standard /;
	use File::Temp qw/ tempfile tempdir /;

	# my $spellercss = '/speller/spellerStyle.css'; # by FredCK
	my $spellercss = '../spellerStyle.css'; # by FredCK
	# my $wordWindowSrc = '/speller/wordWindow.js'; # by FredCK
	my $wordWindowSrc = '../wordWindow.js'; # by FredCK
	my @textinputs = param( 'textinputs[]' ); # array
	# my $aspell_cmd = 'aspell'; # by FredCK (for Linux)
	my $aspell_cmd = '"C:\Program Files\Aspell\bin\aspell.exe"'; # by FredCK (for Windows)
	my $lang = 'en_US';
	# my $aspell_opts = "-a --lang=$lang --encoding=utf-8"; # by FredCK
	my $aspell_opts = "-a --lang=$lang --encoding=utf-8 -H --rem-sgml-check=alt"; # by FredCK
	my $input_separator = "A";

	# set the 'wordtext' JavaScript variable to the submitted text.
	sub printTextVar {
	for( my $i = 0; $i <= $#textinputs; $i++ ) {
	print "textinputs[$i] = decodeURIComponent('" . escapeQuote( $textinputs[$i] ) . "')\n";
	}
	}

	sub printTextIdxDecl {
	my $idx = shift;
	print "words[$idx] = [];\n";
	print "suggs[$idx] = [];\n";
	}

	sub printWordsElem {
	my( $textIdx, $wordIdx, $word ) = @_;
	print "words[$textIdx][$wordIdx] = '" . escapeQuote( $word ) . "';\n";
	}

	sub printSuggsElem {
	my( $textIdx, $wordIdx, @suggs ) = @_;
	print "suggs[$textIdx][$wordIdx] = [";
	for my $i ( 0..$#suggs ) {
	print "'" . escapeQuote( $suggs[$i] ) . "'";
	if( $i < $#suggs ) {
	print ", ";
	}
	}
	print "];\n";
	}

	sub printCheckerResults {
	my $textInputIdx = -1;
	my $wordIdx = 0;
	my $unhandledText;
	# create temp file
	my $dir = tempdir( CLEANUP => 1 );
	my( $fh, $tmpfilename ) = tempfile( DIR => $dir );

	# temp file was created properly?

	# open temp file, add the submitted text.
	for( my $i = 0; $i <= $#textinputs; $i++ ) {
	$text = url_decode( $textinputs[$i] );
	# Strip all tags for the text. (by FredCK - #339 / #681)
	$text =~ s/<[^>]+>/ /g;
	@lines = split( /\n/, $text );
	print $fh "\%\n"; # exit terse mode
	print $fh "^$input_separator\n";
	print $fh "!\n"; # enter terse mode
	for my $line ( @lines ) {
	# use carat on each line to escape possible aspell commands
	print $fh "^$line\n";
	}

	}
	# exec aspell command
	my $cmd = "$aspell_cmd $aspell_opts < $tmpfilename 2>&1";
	open ASPELL, "$cmd \|" or handleError( "Could not execute `$cmd`\\n$!" ) and return;
	# parse each line of aspell return
	for my $ret ( <ASPELL> ) {
	chomp( $ret );
	# if '&', then not in dictionary but has suggestions
	# if '#', then not in dictionary and no suggestions
	# if '*', then it is a delimiter between text inputs
	if( $ret =~ /^\*/ ) {
	$textInputIdx++;
	printTextIdxDecl( $textInputIdx );
	$wordIdx = 0;

	} elsif( $ret =~ /^(&\|#)/ ) {
	my @tokens = split( " ", $ret, 5 );
	printWordsElem( $textInputIdx, $wordIdx, $tokens[1] );
	my @suggs = ();
	if( $tokens[4] ) {
	@suggs = split( ", ", $tokens[4] );
	}
	printSuggsElem( $textInputIdx, $wordIdx, @suggs );
	$wordIdx++;
	} else {
	$unhandledText .= $ret;
	}
	}
	close ASPELL or handleError( "Error executing `$cmd`\\n$unhandledText" ) and return;
	}

	sub escapeQuote {
	my $str = shift;
	$str =~ s/'/\\'/g;
	return $str;
	}

	sub handleError {
	my $err = shift;
	print "error = '" . escapeQuote( $err ) . "';\n";
	}

	sub url_decode {
	local $_ = @_ ? shift : $_;
	defined or return;
	# change + signs to spaces
	tr/+/ /;
	# change hex escapes to the proper characters
	s/%([a-fA-F0-9]{2})/pack "H2", $1/eg;
	return $_;
	}

	# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
	# Display HTML
	# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

	print <<EOF;
	Content-type: text/html; charset=utf-8

	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<link rel="stylesheet" type="text/css" href="$spellercss"/>
	<script src="$wordWindowSrc"></script>
	<script type="text/javascript">
	var suggs = new Array();
	var words = new Array();
	var textinputs = new Array();
	var error;
	EOF

	printTextVar();

	printCheckerResults();

	print <<EOF;
	var wordWindowObj = new wordWindow();
	wordWindowObj.originalSpellings = words;
	wordWindowObj.suggestions = suggs;
	wordWindowObj.textInputs = textinputs;


	function init_spell() {
	// check if any error occured during server-side processing
	if( error ) {
	alert( error );
	} else {
	// call the init_spell() function in the parent frameset
	if (parent.frames.length) {
	parent.init_spell( wordWindowObj );
	} else {
	error = "This page was loaded outside of a frameset. ";
	error += "It might not display properly";
	alert( error );
	}
	}
	}

	</script>

	</head>
	<body onLoad="init_spell();">

	<script type="text/javascript">
	wordWindowObj.writeBody();
	</script>

	</body>
	</html>
	EOF

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