source: trunk/admin/inc/FCKeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.pl@ 2

#!/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";                # 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] );
                @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