File:
[LON-CAPA] /
loncom /
xml /
lontexconvert.pm
Revision
1.28:
download - view:
text,
annotated -
select for diffs
Thu Nov 6 15:27:07 2003 UTC (20 years, 8 months ago) by
albertel
Branches:
MAIN
CVS tags:
version_1_1_X,
version_1_1_3,
version_1_1_2,
version_1_1_1,
version_1_1_0,
version_1_0_99_3,
version_1_0_99_2,
version_1_0_99_1,
version_1_0_99,
HEAD
- tth generates
</font
>
this seems to annoy some sub version of IE.
Thus we remove the whitespace in the end font tag
(BUG#2189)
1: # The LearningOnline Network with CAPA
2: # TeX Conversion Module
3: #
4: # $Id: lontexconvert.pm,v 1.28 2003/11/06 15:27:07 albertel Exp $
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: #
39: # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer
40: # 5/4 Gerd Kortemeyer
41:
42: package Apache::lontexconvert;
43:
44: use strict;
45: use tth;
46: use vars qw($errorstring);
47: use Apache();
48: use Apache::lonmsg;
49: use Apache::lonxml;
50: use Apache::lonmenu;
51:
52: # ====================================================================== Header
53:
54: sub header {
55: $errorstring='';
56: my $time=time;
57: if ($ENV{'browser.mathml'}) {
58: &tth::ttminit();
59: if ($ENV{'browser.unicode'}) {
60: &tth::ttmoptions('-L -u1');
61: } else {
62: &tth::ttmoptions('-L -u0');
63: }
64: } else {
65: &tth::tthinit();
66: if ($ENV{'browser.unicode'}) {
67: &tth::tthoptions('-L -u1');
68: } else {
69: &tth::tthoptions('-L -u0');
70: }
71: }
72: return &Apache::lonxml::xmlbegin().
73: &Apache::lonxml::fontsettings().
74: "\n<head>\n".
75: &Apache::lonmenu::registerurl(undef,'tex').
76: "\n</head>\n";
77: }
78:
79: # ================================================================== Conversion
80:
81: $Apache::lontexconvert::messedup=0;
82: sub converted {
83: my $texstring=shift;
84: my $xmlstring='[UNDISPLAYABLE]';
85: if ($Apache::lontexconvert::messedup) {
86: return '[TeX Unconverted Due To Previous Errors]';
87: }
88: eval(<<'ENDCONV');
89: {
90: local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
91: if ($ENV{'browser.mathml'}) {
92: $xmlstring=&tth::ttm($$texstring);
93: $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
94: $xmlstring=~s/\<br\>/\<br\/\>/g;
95: $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
96: $errorstring.=&tth::ttmerror();
97: } else {
98: $xmlstring=&tth::tth($$texstring);
99: $errorstring.=&tth::ttherror();
100: $xmlstring=~s-</font(\s*)>-</font>-g;
101: }
102: $xmlstring=~s/^\s*//;
103: $xmlstring=~s/\s*$//;
104: }
105: ENDCONV
106: if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {
107: &Apache::lonnet::logthis("Trying to kill myself");
108: $Apache::lontexconvert::messedup=1;
109: my $request=Apache->request();
110: $request->child_terminate();
111: }
112: return $xmlstring;
113: }
114:
115: # ====================================================================== Footer
116:
117: sub footer {
118: my $xmlstring='';
119: if ($ENV{'request.state'} eq 'construct') {
120: $xmlstring.='<address>'.$errorstring.'</address>';
121: } else {
122: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
123: }
124: # -------------------------------------------------------------------- End Body
125: $xmlstring.=&Apache::lonxml::xmlend();
126: return $xmlstring;
127: }
128:
129: # ------------------------------------------------------------ Message display
130:
131: sub to_convert {
132: my ($string) = @_;
133: $string=~s/\<br\s*\/?\>/ /gs;
134: $string=~s/\s/ /gs;
135: $string=&HTML::Entities::decode($string);
136: return &converted(\$string);
137: }
138:
139: sub smiley {
140: my $expression=shift;
141: if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
142: my %smileys=('\:\-\)' => 'smiley',
143: '8\-\)' => 'coolsmile',
144: '8\-(I|\|)' => 'coolindiff',
145: ':\-(I|\|)' => 'neutral',
146: '\:\-(o|O|\(\))' => 'shocked',
147: ':\-\(' => 'frowny',
148: '\;\-\)' => 'wink',
149: '\:\-P' => 'baeh',
150: '\:\-(\\\|\\/)' => 'hrrm',
151: '\:\-D' => 'bigsmile',
152: '\:\-C' => 'angry',
153: '\:(\'|\`)\-\(' => 'cry',
154: '\:\-(X|\#)' => 'lipsrsealed',
155: '\:\-S' => 'huh');
156: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
157: foreach (keys %smileys) {
158: $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs;
159: }
160: return $expression;
161: }
162:
163: sub msgtexconverted {
164: my $message=shift;
165:
166: $errorstring='';
167: if ($ENV{'browser.mathml'}) {
168: &tth::ttminit();
169: if ($ENV{'browser.unicode'}) {
170: &tth::ttmoptions('-L -u1');
171: } else {
172: &tth::ttmoptions('-L -u0');
173: }
174: } else {
175: &tth::tthinit();
176: if ($ENV{'browser.unicode'}) {
177: &tth::tthoptions('-L -u1');
178: } else {
179: &tth::tthoptions('-L -u0');
180: }
181: }
182: my $outmessage='';
183: my $tex=0;
184: foreach (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) {
185: if ($tex) {
186: $outmessage.=&to_convert($_); $tex=0;
187: } else {
188: $outmessage.=&smiley($_); $tex=1;
189: }
190: }
191: if (wantarray) {
192: return ($outmessage,$errorstring);
193: } else {
194: return $outmessage.$errorstring;
195: }
196: }
197:
198: 1;
199: __END__
200:
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206:
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