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Might as well also "spellcheck" the LaTeX

    1: # The LearningOnline Network with CAPA
    2: # Interface routines for Aspell
    3: #
    4: # $Id: lonspeller.pm,v 1.7 2004/07/29 13:38:31 www Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: ######################################################################
   29: ######################################################################
   30: 
   31: package Apache::lonspeller;
   32: 
   33: use Apache::Constants qw(:common);
   34: use Text::Aspell;
   35: use Apache::lonlocal;
   36: use Apache::lontexconvert();
   37: use HTML::LCParser;
   38: use strict;
   39: 
   40: my $speller;
   41: my $insidelink;
   42: 
   43: sub spellcheck_language {
   44:     if ($ENV{'form.lang'}) { return $ENV{'form.lang'}; }
   45:     if (&mt('spellcheck_lang') ne 'spellcheck_lang') {
   46: 	return &mt('spellcheck_lang');
   47:     }
   48:     return 'en_US';
   49: }
   50: 
   51: sub set_language {
   52:     my $lang=&spellcheck_language();
   53:     $speller->set_option('lang',$lang);
   54: }
   55: 
   56: sub textsection {
   57:     my $input=shift;
   58:     my $output='';
   59:     &set_language();
   60:     foreach my $word (split(/\b/,$input)) {
   61: 	if (($word=~/\W/) || ($word=~/^(lt|gt|nbsp|amp)$/i)
   62: 	    || ($speller->check($word))) {
   63: 	    $output.=$word;
   64: 	} else {
   65: 	    my $suggestions=join(' ',$speller->suggest($word));
   66: 	    $suggestions=~s/\'/\\\'/gs;
   67: 	    if (($suggestions) && (!$insidelink)) {
   68: 		$output.='<a href="javascript:alert('."'".
   69: 		    $suggestions."');".
   70: 		    '">';
   71: 	    }
   72: 	    $output.='<font color="red">'.$word.'</font>';
   73: 	    if (($suggestions) && (!$insidelink)) { $output.='</a>'; }
   74: 	}
   75:     }
   76:     return $output;
   77: }
   78: 
   79: 
   80: sub markeduptext {
   81:     my $input=shift;
   82:     my $output='';
   83:     my $parser=HTML::LCParser->new(\$input);
   84:     $insidelink=0;
   85:     my $token;
   86:     while ($token=$parser->get_token) {
   87: 	if ($token->[0] eq 'T') {
   88: 	    $output.=&textsection($token->[1]);
   89: 	} elsif ($token->[0] eq 'S') {
   90: 	    $output.=$token->[4];
   91: 	    foreach my $tag ('m','script') {
   92: 		if ($token->[1] eq $tag) {
   93: 		    $output.=$parser->get_text('/'.$tag);
   94: 		}
   95: 	    }
   96: 	    if ($token->[1] eq 'a') {
   97: 		$insidelink=1;
   98: 	    }
   99: 	} elsif ($token->[0] eq 'E') {
  100: 	    $output.=$token->[2];
  101: 	    if ($token->[1] eq 'a') {
  102: 		$insidelink=0;
  103: 	    }
  104: 	}
  105:     }
  106:     $insidelink=0;
  107:     return $output;
  108: }
  109: 
  110: sub initspeller {
  111:     unless (defined($speller)) {
  112: 	$speller = Text::Aspell->new;
  113: 	$speller->set_option('lang','en_US');
  114:     }
  115:     $insidelink=0;
  116: }
  117: 
  118: sub handler {
  119:     my $r = shift;
  120:     &Apache::loncommon::content_type($r,'text/html');
  121:     $r->send_http_header;
  122:     return OK if $r->header_only;
  123: 
  124:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
  125: 
  126:     &initspeller();
  127:     $r->print('<html><head><title>'.
  128: 	      &mt('Spell Checker').
  129: 	      '</title></head><body bgcolor="#DDDDDD">'.
  130: 	      &Apache::lontexconvert::msgtexconverted(
  131: 				     &markeduptext($ENV{'form.text'})).
  132: 	      '</body></html>');
  133:     return OK;
  134: }
  135: 
  136: BEGIN {
  137:     &initspeller();
  138: }
  139: 
  140: 1;
  141: 
  142: __END__