Annotation of loncom/xml/lontexconvert.pm, revision 1.30
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
1.30 ! albertel 4: # $Id: lontexconvert.pm,v 1.29 2004/01/28 17:16:27 albertel 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:
1.29 albertel 54: sub init_tth {
55: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
56: if ($ENV{'browser.mathml'}) {
57: &tth::ttminit();
58: if ($ENV{'browser.unicode'}) {
59: &tth::ttmoptions('-L -u1 '.$options);
60: } else {
61: &tth::ttmoptions('-L -u0 '.$options);
62: }
63: } else {
64: &tth::tthinit();
65: if ($ENV{'browser.unicode'}) {
66: &tth::tthoptions('-L -u1 '.$options);
67: } else {
68: &tth::tthoptions('-L -u0 '.$options);
69: }
70: }
71: }
72:
1.1 harris41 73: sub header {
74: $errorstring='';
75: my $time=time;
1.29 albertel 76: &init_tth();
1.3 www 77: return &Apache::lonxml::xmlbegin().
78: &Apache::lonxml::fontsettings().
79: "\n<head>\n".
1.16 www 80: &Apache::lonmenu::registerurl(undef,'tex').
1.3 www 81: "\n</head>\n";
1.1 harris41 82: }
83:
84: # ================================================================== Conversion
85:
1.19 albertel 86: $Apache::lontexconvert::messedup=0;
1.1 harris41 87: sub converted {
1.12 www 88: my $texstring=shift;
89: my $xmlstring='[UNDISPLAYABLE]';
1.19 albertel 90: if ($Apache::lontexconvert::messedup) {
1.26 www 91: return '[TeX Unconverted Due To Previous Errors]';
1.19 albertel 92: }
1.12 www 93: eval(<<'ENDCONV');
1.19 albertel 94: {
95: local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
1.1 harris41 96: if ($ENV{'browser.mathml'}) {
97: $xmlstring=&tth::ttm($$texstring);
98: $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
99: $xmlstring=~s/\<br\>/\<br\/\>/g;
100: $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
101: $errorstring.=&tth::ttmerror();
1.12 www 102: } else {
1.1 harris41 103: $xmlstring=&tth::tth($$texstring);
104: $errorstring.=&tth::ttherror();
1.28 albertel 105: $xmlstring=~s-</font(\s*)>-</font>-g;
1.12 www 106: }
1.23 albertel 107: $xmlstring=~s/^\s*//;
108: $xmlstring=~s/\s*$//;
1.1 harris41 109: }
1.12 www 110: ENDCONV
1.19 albertel 111: if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {
112: &Apache::lonnet::logthis("Trying to kill myself");
113: $Apache::lontexconvert::messedup=1;
114: my $request=Apache->request();
115: $request->child_terminate();
116: }
1.1 harris41 117: return $xmlstring;
118: }
119:
120: # ====================================================================== Footer
121:
122: sub footer {
123: my $xmlstring='';
124: if ($ENV{'request.state'} eq 'construct') {
125: $xmlstring.='<address>'.$errorstring.'</address>';
126: } else {
127: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
128: }
129: # -------------------------------------------------------------------- End Body
1.3 www 130: $xmlstring.=&Apache::lonxml::xmlend();
1.1 harris41 131: return $xmlstring;
1.6 www 132: }
133:
134: # ------------------------------------------------------------ Message display
135:
1.9 albertel 136: sub to_convert {
137: my ($string) = @_;
1.22 www 138: $string=~s/\<br\s*\/?\>/ /gs;
1.30 ! albertel 139: # $string=~s/\s/ /gs;
1.18 albertel 140: $string=&HTML::Entities::decode($string);
1.9 albertel 141: return &converted(\$string);
142: }
143:
1.20 www 144: sub smiley {
145: my $expression=shift;
146: if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
1.27 www 147: my %smileys=('\:\-\)' => 'smiley',
148: '8\-\)' => 'coolsmile',
149: '8\-(I|\|)' => 'coolindiff',
150: ':\-(I|\|)' => 'neutral',
151: '\:\-(o|O|\(\))' => 'shocked',
152: ':\-\(' => 'frowny',
153: '\;\-\)' => 'wink',
154: '\:\-P' => 'baeh',
1.21 www 155: '\:\-(\\\|\\/)' => 'hrrm',
1.27 www 156: '\:\-D' => 'bigsmile',
157: '\:\-C' => 'angry',
158: '\:(\'|\`)\-\(' => 'cry',
159: '\:\-(X|\#)' => 'lipsrsealed',
160: '\:\-S' => 'huh');
1.20 www 161: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
162: foreach (keys %smileys) {
163: $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs;
164: }
165: return $expression;
166: }
167:
1.6 www 168: sub msgtexconverted {
169: my $message=shift;
1.30 ! albertel 170: my $email=shift;
1.17 albertel 171: $errorstring='';
1.29 albertel 172: &init_tth();
1.25 www 173: my $outmessage='';
174: my $tex=0;
175: foreach (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) {
176: if ($tex) {
1.30 ! albertel 177: if ($email) {
! 178: $outmessage.='</pre><tt>'.&to_convert($_).'</tt><pre>'; $tex=0;
! 179: } else {
! 180: $outmessage.=&to_convert($_); $tex=0;
! 181: }
1.25 www 182: } else {
183: $outmessage.=&smiley($_); $tex=1;
184: }
185: }
1.24 albertel 186: if (wantarray) {
1.25 www 187: return ($outmessage,$errorstring);
1.24 albertel 188: } else {
1.25 www 189: return $outmessage.$errorstring;
1.24 albertel 190: }
1.1 harris41 191: }
192:
193: 1;
194: __END__
195:
196:
197:
198:
199:
200:
201:
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