Annotation of loncom/xml/lontexconvert.pm, revision 1.21
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
1.21 ! www 4: # $Id: lontexconvert.pm,v 1.20 2003/03/13 16:16:07 www Exp $
1.4 www 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: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.1 harris41 39: # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer
1.3 www 40: # 5/4 Gerd Kortemeyer
1.1 harris41 41:
42: package Apache::lontexconvert;
43:
44: use strict;
45: use tth;
46: use vars qw($errorstring);
1.19 albertel 47: use Apache();
1.1 harris41 48: use Apache::lonmsg;
1.3 www 49: use Apache::lonxml;
1.16 www 50: use Apache::lonmenu;
1.1 harris41 51:
52: # ====================================================================== Header
53:
54: sub header {
55: $errorstring='';
56: my $time=time;
57: if ($ENV{'browser.mathml'}) {
58: &tth::ttminit();
1.13 albertel 59: if ($ENV{'browser.unicode'}) {
60: &tth::ttmoptions('-L -u1');
61: } else {
62: &tth::ttmoptions('-L -u0');
63: }
1.1 harris41 64: } else {
65: &tth::tthinit();
1.13 albertel 66: if ($ENV{'browser.unicode'}) {
67: &tth::tthoptions('-L -u1');
68: } else {
69: &tth::tthoptions('-L -u0');
70: }
1.1 harris41 71: }
1.3 www 72: return &Apache::lonxml::xmlbegin().
73: &Apache::lonxml::fontsettings().
74: "\n<head>\n".
1.16 www 75: &Apache::lonmenu::registerurl(undef,'tex').
1.3 www 76: "\n</head>\n";
1.1 harris41 77: }
78:
79: # ================================================================== Conversion
80:
1.19 albertel 81: $Apache::lontexconvert::messedup=0;
1.1 harris41 82: sub converted {
1.12 www 83: my $texstring=shift;
84: my $xmlstring='[UNDISPLAYABLE]';
1.19 albertel 85: if ($Apache::lontexconvert::messedup) {
86: return '[Uncoverted Due To Previous Errors]';
87: }
1.12 www 88: eval(<<'ENDCONV');
1.19 albertel 89: {
90: local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
1.1 harris41 91: if ($ENV{'browser.mathml'}) {
92: $xmlstring=&tth::ttm($$texstring);
93: $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
94: $xmlstring=~s/\<br\>/\<br\/\>/g;
95: $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
96: $errorstring.=&tth::ttmerror();
1.12 www 97: } else {
1.1 harris41 98: $xmlstring=&tth::tth($$texstring);
99: $errorstring.=&tth::ttherror();
1.12 www 100: }
1.1 harris41 101: }
1.12 www 102: ENDCONV
1.19 albertel 103: if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {
104: &Apache::lonnet::logthis("Trying to kill myself");
105: $Apache::lontexconvert::messedup=1;
106: my $request=Apache->request();
107: $request->child_terminate();
108: }
1.1 harris41 109: return $xmlstring;
110: }
111:
112: # ====================================================================== Footer
113:
114: sub footer {
115: my $xmlstring='';
116: if ($ENV{'request.state'} eq 'construct') {
117: $xmlstring.='<address>'.$errorstring.'</address>';
118: } else {
119: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
120: }
121: # -------------------------------------------------------------------- End Body
1.3 www 122: $xmlstring.=&Apache::lonxml::xmlend();
1.1 harris41 123: return $xmlstring;
1.6 www 124: }
125:
126: # ------------------------------------------------------------ Message display
127:
1.9 albertel 128: sub to_convert {
129: my ($string) = @_;
1.11 www 130: $string=~s/\<br\s*\/?\>/ /g;
1.18 albertel 131: $string=&HTML::Entities::decode($string);
1.9 albertel 132: return &converted(\$string);
133: }
134:
1.20 www 135: sub smiley {
136: my $expression=shift;
137: if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
138: my %smileys=('\:\-*\)' => 'smiley',
139: '8\-*\)' => 'coolsmile',
140: '8\-*I' => 'coolindiff',
141: ':\-*\(' => 'frowny',
142: '\:\-*(o|O|\(\))' => 'shocked',
143: '\;\-*\)' => 'wink',
144: '\:\-*P' => 'baeh',
1.21 ! www 145: '\:\-(\\\|\\/)' => 'hrrm',
1.20 www 146: '\:\-*D' => 'bigsmile',
147: '\:\-*C' => 'angry',
148: '\:(\'|\`)\-*\(' => 'cry',
149: '\:\-*(X|\#)' => 'lipsrsealed',
150: '\:\-*S' => 'huh');
151: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
152: foreach (keys %smileys) {
153: $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs;
154: }
155: return $expression;
156: }
157:
1.6 www 158: sub msgtexconverted {
159: my $message=shift;
1.9 albertel 160:
1.17 albertel 161: $errorstring='';
1.6 www 162: if ($ENV{'browser.mathml'}) {
1.15 albertel 163: &tth::ttminit();
164: if ($ENV{'browser.unicode'}) {
165: &tth::ttmoptions('-L -u1');
166: } else {
167: &tth::ttmoptions('-L -u0');
168: }
1.6 www 169: } else {
1.15 albertel 170: &tth::tthinit();
171: if ($ENV{'browser.unicode'}) {
172: &tth::tthoptions('-L -u1');
173: } else {
174: &tth::tthoptions('-L -u0');
175: }
1.6 www 176: }
1.15 albertel 177: $message=~s/(\$\$.+?\$\$)/&to_convert($1)/ge;
178: $message=~s/(\$.+?\$)/&to_convert($1)/ge;
179: $message=~s/(\\\(.+?\\\))/&to_convert($1)/ge;
180: $message=~s/(\\\[.+?\\\])/&to_convert($1)/ge;
1.20 www 181: return &smiley($message).$errorstring;
1.1 harris41 182: }
183:
184: 1;
185: __END__
186:
187:
188:
189:
190:
191:
192:
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