Annotation of loncom/xml/lontexconvert.pm, revision 1.12
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
1.12 ! www 4: # $Id: lontexconvert.pm,v 1.11 2002/10/25 15:08:09 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
40: # 05/03/2001 Scott Harrison
1.3 www 41: # 5/4 Gerd Kortemeyer
1.1 harris41 42:
43: package Apache::lontexconvert;
44:
45: use strict;
46: use tth;
47: use vars qw($errorstring);
48: use Apache::lonmsg;
1.3 www 49: use Apache::lonxml;
1.1 harris41 50:
51: # ====================================================================== Header
52:
53: sub header {
54: $errorstring='';
55: my $time=time;
56: if ($ENV{'browser.mathml'}) {
57: &tth::ttminit();
58: } else {
59: &tth::tthinit();
60: }
1.3 www 61: return &Apache::lonxml::xmlbegin().
62: &Apache::lonxml::fontsettings().
63: "\n<head>\n".
1.5 matthew 64: &Apache::lonxml::registerurl(undef,'tex').
1.3 www 65: "\n</head>\n";
1.1 harris41 66: }
67:
68: # ================================================================== Conversion
69:
70: sub converted {
1.12 ! www 71: my $texstring=shift;
! 72: my $xmlstring='[UNDISPLAYABLE]';
! 73: eval(<<'ENDCONV');
! 74: {
! 75: local $SIG{SEGV}=sub { die; };
1.1 harris41 76: if ($ENV{'browser.mathml'}) {
77: $xmlstring=&tth::ttm($$texstring);
78: $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
79: $xmlstring=~s/\<br\>/\<br\/\>/g;
80: $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
81: $errorstring.=&tth::ttmerror();
1.12 ! www 82: } else {
1.1 harris41 83: $xmlstring=&tth::tth($$texstring);
84: $errorstring.=&tth::ttherror();
1.12 ! www 85: }
1.1 harris41 86: }
1.12 ! www 87: ENDCONV
1.1 harris41 88: return $xmlstring;
89: }
90:
91: # ====================================================================== Footer
92:
93: sub footer {
94: my $xmlstring='';
95: if ($ENV{'request.state'} eq 'construct') {
96: $xmlstring.='<address>'.$errorstring.'</address>';
97: } else {
98: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
99: }
100: # -------------------------------------------------------------------- End Body
1.3 www 101: $xmlstring.=&Apache::lonxml::xmlend();
1.1 harris41 102: return $xmlstring;
1.6 www 103: }
104:
105: # ------------------------------------------------------------ Message display
106:
1.9 albertel 107: sub to_convert {
108: my ($string) = @_;
1.11 www 109: $string=~s/\<br\s*\/?\>/ /g;
1.9 albertel 110: return &converted(\$string);
111: }
112:
1.6 www 113: sub msgtexconverted {
114: my $message=shift;
1.9 albertel 115:
116: #FIXME this crap needs to go but right now the -L option might be
117: #ignored if this isn;t the first time the tth engine is used
118: #thus the \\document class crap, it makes sure we init the LaTeX stuff
1.6 www 119: if ($ENV{'browser.mathml'}) {
120: &tth::ttminit();
1.7 www 121: &tth::ttmoptions("-L");
1.6 www 122: } else {
123: &tth::tthinit();
1.7 www 124: &tth::tthoptions("-L");
1.6 www 125: }
1.9 albertel 126: $message=~s/(\$\$.+?\$\$)/&to_convert("\\documentclass{article}".$1)/ge;
127: $message=~s/(\$.+?\$)/&to_convert("\\documentclass{article}".$1)/ge;
128: $message=~s/(\\\(.+?\\\))/&to_convert("\\documentclass{article}".$1)/ge;
129: $message=~s/(\\\[.+?\\\])/&to_convert("\\documentclass{article}".$1)/ge;
1.8 albertel 130: return $message.$errorstring;
1.1 harris41 131: }
132:
133: 1;
134: __END__
135:
136:
137:
138:
139:
140:
141:
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