1: # The LearningOnline Network with CAPA
2: # Interface routines for Aspell
3: #
4: # $Id: lonspeller.pm,v 1.8 2004/12/02 16:40:00 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: $output.='<a href="javascript:spellwin=window.open('.
69: &Apache::lonhtmlcommon::javascript_nothing().
70: ',\'spellwin\',\'height=140,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no\');'.
71: 'spellwin.'.&Apache::lonhtmlcommon::javascript_docopen.';spellwin.document.writeln(\'<html><body><h3>'.$word.
72: '</h3>'.$suggestions.'</body></html>\');spellwin.document.close();spellwin.focus()">';
73: }
74: $output.='<font color="red">'.$word.'</font>';
75: if (($suggestions) && (!$insidelink)) { $output.='</a>'; }
76: }
77: }
78: return $output;
79: }
80:
81:
82: sub markeduptext {
83: my $input=shift;
84: my $output='';
85: my $parser=HTML::LCParser->new(\$input);
86: $insidelink=0;
87: my $token;
88: while ($token=$parser->get_token) {
89: if ($token->[0] eq 'T') {
90: $output.=&textsection($token->[1]);
91: } elsif ($token->[0] eq 'S') {
92: $output.=$token->[4];
93: foreach my $tag ('m','script') {
94: if ($token->[1] eq $tag) {
95: $output.=$parser->get_text('/'.$tag);
96: }
97: }
98: if ($token->[1] eq 'a') {
99: $insidelink=1;
100: }
101: } elsif ($token->[0] eq 'E') {
102: $output.=$token->[2];
103: if ($token->[1] eq 'a') {
104: $insidelink=0;
105: }
106: }
107: }
108: $insidelink=0;
109: return $output;
110: }
111:
112: sub initspeller {
113: unless (defined($speller)) {
114: $speller = Text::Aspell->new;
115: $speller->set_option('lang','en_US');
116: }
117: $insidelink=0;
118: }
119:
120: sub handler {
121: my $r = shift;
122: &Apache::loncommon::content_type($r,'text/html');
123: $r->send_http_header;
124: return OK if $r->header_only;
125:
126: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
127:
128: &initspeller();
129: $r->print('<html><head><title>'.
130: &mt('Spell Checker').
131: '</title></head><body bgcolor="#DDDDDD">'.
132: &Apache::lontexconvert::msgtexconverted(
133: &markeduptext($ENV{'form.text'})).
134: '</body></html>');
135: return OK;
136: }
137:
138: BEGIN {
139: &initspeller();
140: }
141:
142: 1;
143:
144: __END__
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