#!/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

