Annotation of loncom/xml/lontexconvert.pm, revision 1.29
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
1.29 ! albertel 4: # $Id: lontexconvert.pm,v 1.28 2003/11/06 15:27:07 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: &Apache::lonnet::logthis("caled and use $options");
! 72: &Apache::lonnet::logthis("caller ".join(':',caller(0)));
! 73:
! 74: }
! 75:
1.1 harris41 76: sub header {
77: $errorstring='';
78: my $time=time;
1.29 ! albertel 79: &init_tth();
1.3 www 80: return &Apache::lonxml::xmlbegin().
81: &Apache::lonxml::fontsettings().
82: "\n<head>\n".
1.16 www 83: &Apache::lonmenu::registerurl(undef,'tex').
1.3 www 84: "\n</head>\n";
1.1 harris41 85: }
86:
87: # ================================================================== Conversion
88:
1.19 albertel 89: $Apache::lontexconvert::messedup=0;
1.1 harris41 90: sub converted {
1.12 www 91: my $texstring=shift;
92: my $xmlstring='[UNDISPLAYABLE]';
1.19 albertel 93: if ($Apache::lontexconvert::messedup) {
1.26 www 94: return '[TeX Unconverted Due To Previous Errors]';
1.19 albertel 95: }
1.12 www 96: eval(<<'ENDCONV');
1.19 albertel 97: {
98: local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
1.1 harris41 99: if ($ENV{'browser.mathml'}) {
100: $xmlstring=&tth::ttm($$texstring);
101: $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
102: $xmlstring=~s/\<br\>/\<br\/\>/g;
103: $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
104: $errorstring.=&tth::ttmerror();
1.12 www 105: } else {
1.1 harris41 106: $xmlstring=&tth::tth($$texstring);
107: $errorstring.=&tth::ttherror();
1.28 albertel 108: $xmlstring=~s-</font(\s*)>-</font>-g;
1.12 www 109: }
1.23 albertel 110: $xmlstring=~s/^\s*//;
111: $xmlstring=~s/\s*$//;
1.1 harris41 112: }
1.12 www 113: ENDCONV
1.19 albertel 114: if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {
115: &Apache::lonnet::logthis("Trying to kill myself");
116: $Apache::lontexconvert::messedup=1;
117: my $request=Apache->request();
118: $request->child_terminate();
119: }
1.1 harris41 120: return $xmlstring;
121: }
122:
123: # ====================================================================== Footer
124:
125: sub footer {
126: my $xmlstring='';
127: if ($ENV{'request.state'} eq 'construct') {
128: $xmlstring.='<address>'.$errorstring.'</address>';
129: } else {
130: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
131: }
132: # -------------------------------------------------------------------- End Body
1.3 www 133: $xmlstring.=&Apache::lonxml::xmlend();
1.1 harris41 134: return $xmlstring;
1.6 www 135: }
136:
137: # ------------------------------------------------------------ Message display
138:
1.9 albertel 139: sub to_convert {
140: my ($string) = @_;
1.22 www 141: $string=~s/\<br\s*\/?\>/ /gs;
142: $string=~s/\s/ /gs;
1.18 albertel 143: $string=&HTML::Entities::decode($string);
1.9 albertel 144: return &converted(\$string);
145: }
146:
1.20 www 147: sub smiley {
148: my $expression=shift;
149: if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
1.27 www 150: my %smileys=('\:\-\)' => 'smiley',
151: '8\-\)' => 'coolsmile',
152: '8\-(I|\|)' => 'coolindiff',
153: ':\-(I|\|)' => 'neutral',
154: '\:\-(o|O|\(\))' => 'shocked',
155: ':\-\(' => 'frowny',
156: '\;\-\)' => 'wink',
157: '\:\-P' => 'baeh',
1.21 www 158: '\:\-(\\\|\\/)' => 'hrrm',
1.27 www 159: '\:\-D' => 'bigsmile',
160: '\:\-C' => 'angry',
161: '\:(\'|\`)\-\(' => 'cry',
162: '\:\-(X|\#)' => 'lipsrsealed',
163: '\:\-S' => 'huh');
1.20 www 164: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
165: foreach (keys %smileys) {
166: $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs;
167: }
168: return $expression;
169: }
170:
1.6 www 171: sub msgtexconverted {
172: my $message=shift;
1.9 albertel 173:
1.17 albertel 174: $errorstring='';
1.29 ! albertel 175: &init_tth();
1.25 www 176: my $outmessage='';
177: my $tex=0;
178: foreach (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) {
179: if ($tex) {
180: $outmessage.=&to_convert($_); $tex=0;
181: } else {
182: $outmessage.=&smiley($_); $tex=1;
183: }
184: }
1.24 albertel 185: if (wantarray) {
1.25 www 186: return ($outmessage,$errorstring);
1.24 albertel 187: } else {
1.25 www 188: return $outmessage.$errorstring;
1.24 albertel 189: }
1.1 harris41 190: }
191:
192: 1;
193: __END__
194:
195:
196:
197:
198:
199:
200:
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