Annotation of loncom/xml/lontexconvert.pm, revision 1.19
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
1.19 ! albertel 4: # $Id: lontexconvert.pm,v 1.18 2003/02/26 20:22:11 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:
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:
1.6 www 135: sub msgtexconverted {
136: my $message=shift;
1.9 albertel 137:
1.17 albertel 138: $errorstring='';
1.6 www 139: if ($ENV{'browser.mathml'}) {
1.15 albertel 140: &tth::ttminit();
141: if ($ENV{'browser.unicode'}) {
142: &tth::ttmoptions('-L -u1');
143: } else {
144: &tth::ttmoptions('-L -u0');
145: }
1.6 www 146: } else {
1.15 albertel 147: &tth::tthinit();
148: if ($ENV{'browser.unicode'}) {
149: &tth::tthoptions('-L -u1');
150: } else {
151: &tth::tthoptions('-L -u0');
152: }
1.6 www 153: }
1.15 albertel 154: $message=~s/(\$\$.+?\$\$)/&to_convert($1)/ge;
155: $message=~s/(\$.+?\$)/&to_convert($1)/ge;
156: $message=~s/(\\\(.+?\\\))/&to_convert($1)/ge;
157: $message=~s/(\\\[.+?\\\])/&to_convert($1)/ge;
1.8 albertel 158: return $message.$errorstring;
1.1 harris41 159: }
160:
161: 1;
162: __END__
163:
164:
165:
166:
167:
168:
169:
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