File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.201:
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Tue Mar 9 20:37:58 2004 UTC (20 years, 2 months ago) by
albertel
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MAIN
CVS tags:
HEAD
- Added &Apache::lonxml::info, for display informational message (saved changes etc.), messages are suppressed when not in CSTR
- Tryin to address BUG#2305, we were emitting text before the <html> tag (error messages etc.)
- now exists &Apache::lonxml::message_location() which is used o mark where messages should go
- &Apache::lonxml::add_messages() which puts the info/warning/error message into the page (And should be called right before display the results of the parse)
- Homework Edit,EditXML, and display modes converted to use this mechanism
- HTML display and Edit converted to use this
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.201 2004/03/09 20:37:58 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
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: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $Apache::lonxml::prevent_entity_encode++;
90: $inside ='\\documentstyle{article}'.$inside;
91: &Apache::lonxml::debug("M is starting with:$inside:");
92: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
93: if ($eval eq 'on') {
94: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
95: #&Apache::lonxml::debug("M is evaulated to:$inside:");
96: }
97: $currentstring = &Apache::lontexconvert::converted(\$inside);
98: if ($Apache::lontexconvert::errorstring) {
99: &Apache::lonxml::warning("tth error: ".
100: $Apache::lontexconvert::errorstring);
101: $Apache::lontexconvert::errorstring='';
102: }
103: #&Apache::lonxml::debug("M is ends with:$currentstring:");
104: $Apache::lonxml::post_evaluate=0;
105: } elsif ($target eq 'tex') {
106: $currentstring = $inside;
107: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
108: if ($eval eq 'on') {
109: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
110: }
111: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
112: $Apache::lonxml::post_evaluate=0;
113: }
114: return $currentstring;
115: }
116:
117: sub end_m {
118: my ($target,$token) = @_;
119: my $currentstring = '';
120: if ($target eq 'web') {
121: $Apache::lonxml::prevent_entity_encode--;
122: } elsif ($target eq 'tex') {
123: $currentstring = "";
124: } elsif ($target eq 'meta') {
125: }
126: return $currentstring;
127: }
128:
129: sub start_tthoption {
130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
131: my $result;
132: if ($target eq 'web') {
133: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
134: $inside=~s/^\s*//;
135: if ($ENV{'browser.mathml'}) {
136: &tth::ttmoptions($inside);
137: } else {
138: &tth::tthoptions($inside);
139: }
140: }
141: return $result;
142: }
143:
144: sub end_tthoption {
145: my ($target,$token) = @_;
146: my $result;
147: return $result;
148: }
149:
150: #-- <html> tag (end tag optional)
151: sub start_html {
152: my ($target,$token) = @_;
153: my $currentstring = '';
154: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
155: &Apache::lontexconvert::init_tth();
156: if ($target eq 'web' || $target eq 'edit') {
157: $currentstring = &Apache::lonxml::xmlbegin().
158: &Apache::lonxml::fontsettings();
159: } elsif ($target eq 'tex') {
160: @Apache::londefdef::table = ();
161: $currentstring .= '\documentclass[letterpaper]{article}';
162: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
163: $currentstring .= '\newcommand{\keephidden}[1]{}
164: \renewcommand{\deg}{$^{\circ}$}
165: \usepackage{longtable}
166: \usepackage{textcomp}
167: \usepackage{makeidx}
168: \usepackage[dvips]{graphicx}
169: \usepackage{epsfig}\usepackage{calc}
170: \newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}
171: \renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
172: }
173: return $currentstring;
174: }
175:
176: sub end_html {
177: my ($target,$token) = @_;
178: my $currentstring = '';
179: if ($target eq 'web') {
180: $currentstring = &Apache::lonxml::xmlend();
181: }
182: return $currentstring;
183: }
184:
185: #-- <head> tag (end tag optional)
186: sub start_head {
187: my ($target,$token) = @_;
188: my $currentstring = '';
189: if ($target eq 'web') {
190: $currentstring = $token->[4];
191: }
192: return $currentstring;
193: }
194:
195: sub end_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
199: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
200: $token->[2];
201: }
202: return $currentstring;
203: }
204:
205: #-- <map> tag (end tag required)
206: sub start_map {
207: my ($target,$token) = @_;
208: my $currentstring = '';
209: if ($target eq 'web') {
210: $currentstring = $token->[4];
211: }
212: return $currentstring;
213: }
214:
215: sub end_map {
216: my ($target,$token) = @_;
217: my $currentstring = '';
218: if ($target eq 'web') {
219: $currentstring = $token->[2];
220: }
221: return $currentstring;
222: }
223:
224: #-- <select> tag (end tag required)
225: sub start_select {
226: my ($target,$token) = @_;
227: my $currentstring = '';
228: if ($target eq 'web') {
229: $currentstring = $token->[4];
230: } elsif ($target eq 'tex') {
231: $Apache::londefdef::select=0;
232: }
233: return $currentstring;
234: }
235:
236: sub end_select {
237: my ($target,$token) = @_;
238: my $currentstring = '';
239: if ($target eq 'web') {
240: $currentstring = $token->[2];
241: }
242: return $currentstring;
243: }
244:
245: #-- <option> tag (end tag optional)
246: sub start_option {
247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
248: my $currentstring = '';
249: if ($target eq 'web') {
250: $currentstring = $token->[4];
251: } elsif ($target eq 'tex') {
252: $Apache::londefdef::select++;
253: if ($Apache::londefdef::select == 1) {
254: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
255: } else {
256: $currentstring='\keephidden{';
257: }
258: }
259: return $currentstring;
260: }
261:
262: sub end_option {
263: my ($target,$token) = @_;
264: my $currentstring = '';
265: if ($target eq 'web') {
266: $currentstring = $token->[2];
267: } elsif ($target eq 'tex') {
268: $currentstring='}';
269: }
270: return $currentstring;
271: }
272:
273: #-- <input> tag (end tag forbidden)
274: sub start_input {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web') {
278: $currentstring = $token->[4];
279: }
280: return $currentstring;
281: }
282:
283: sub end_input {
284: my ($target,$token) = @_;
285: my $currentstring = '';
286: if ($target eq 'web') {
287: $currentstring = $token->[2];
288: }
289: return $currentstring;
290: }
291:
292: #-- <textarea> tag (end tag required)
293: sub start_textarea {
294: my ($target,$token) = @_;
295: my $currentstring = '';
296: if ($target eq 'web') {
297: $currentstring = $token->[4];
298: }
299: return $currentstring;
300: }
301:
302: sub end_textarea {
303: my ($target,$token) = @_;
304: my $currentstring = '';
305: if ($target eq 'web') {
306: $currentstring = $token->[2];
307: }
308: return $currentstring;
309: }
310:
311: #-- <form> tag (end tag required)
312: sub start_form {
313: my ($target,$token) = @_;
314: my $currentstring = '';
315: if ($target eq 'web') {
316: $currentstring = $token->[4];
317: }
318: return $currentstring;
319: }
320:
321: sub end_form {
322: my ($target,$token) = @_;
323: my $currentstring = '';
324: if ($target eq 'web') {
325: $currentstring = $token->[2];
326: }
327: return $currentstring;
328: }
329:
330: #-- <title> tag (end tag required)
331: sub start_title {
332: my ($target,$token) = @_;
333: my $currentstring = '';
334: if ($target eq 'web') {
335: $currentstring = $token->[4];
336: } elsif ($target eq 'tex') {
337: $currentstring .= '\keephidden{Title of the document: '
338: }
339: if ($target eq 'meta') {
340: $currentstring='<title>';
341: &start_output($target);
342: }
343: return $currentstring;
344: }
345:
346: sub end_title {
347: my ($target,$token) = @_;
348: my $currentstring = '';
349: if ($target eq 'web') {
350: $currentstring = $token->[2];
351: } elsif ($target eq 'tex') {
352: $currentstring .= '}';
353: }
354: if ($target eq 'meta') {
355: &end_output($target);
356: $currentstring='</title>';
357: }
358: return $currentstring;
359: }
360:
361: #-- <meta> tag (end tag forbidden)
362: sub start_meta {
363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
364: my $currentstring = '';
365: if ($target eq 'web') {
366: my $args='';
367: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
368: if ($args eq '') {
369: &Apache::lonxml::get_all_text("/meta",$parser);
370: } else {
371: $currentstring = $token->[4];
372: }
373: } elsif ($target eq 'meta') {
374: unless (&Apache::lonxml::get_param
375: ('http-equiv',$parstack,$safeeval,undef,1)) {
376: my $name=$token->[2]->{'name'};
377: $name=~tr/A-Z/a-z/;
378: $name=~s/\s/\_/gs;
379: $name=~s/\W//gs;
380: if ($name) {
381: $currentstring='<'.$name;
382: my $display=&Apache::lonxml::get_param
383: ('display',$parstack,$safeeval,undef,1);
384: if ($display) {
385: $display=~s/\"/\'/g;
386: $currentstring.=' display="'.$display.'"';
387: }
388: $currentstring.='>'.
389: &Apache::lonxml::get_param
390: ('content',$parstack,$safeeval,undef,1).
391: '</'.$name.'>';
392: }
393: my $display=&Apache::lonxml::get_param
394: ('display',$parstack,$safeeval,undef,1);
395: if ($display) {
396: $display=&HTML::Entities::encode($display);
397: $currentstring.='<'.$name.'.display>'.$display.
398: '</'.$name.'.display>';
399: }
400: }
401: } elsif ($target eq 'tex') {
402: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
403: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
404: if ((not defined $content) && (not defined $name)) {
405: &Apache::lonxml::startredirection();
406: }
407: }
408: return $currentstring;
409: }
410:
411: sub end_meta {
412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
413: my $currentstring = '';
414: if ($target eq 'web') {
415: my $args='';
416: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
417: if ($args ne '') {
418: $currentstring = $token->[4];
419: }
420: } elsif ($target eq 'tex') {
421: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
422: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
423: if ((not defined $content) && (not defined $name)) {
424: &Apache::lonxml::endredirection();
425: }
426: }
427: return $currentstring;
428: }
429:
430: # accessrule
431: sub start_accessrule {
432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
433: my $currentstring = '';
434: my $eff=&Apache::lonxml::get_param
435: ('effect',$parstack,$safeeval,undef,1);
436: my $realm=&Apache::lonxml::get_param
437: ('realm',$parstack,$safeeval,undef,1);
438: my $role=&Apache::lonxml::get_param
439: ('role',$parstack,$safeeval,undef,1);
440: $realm=~s/\s+//g;
441: $realm=~s/\//\_/g;
442: $realm=~s/^\_//;
443: $realm=~s/\W/\;/g;
444: $role=~s/\s+//g;
445: $role=~s/\//\_/g;
446: $role=~s/\W/\;/g;
447: if ($target eq 'web') {
448: my $args='';
449: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
450: if ($args eq '') {
451: &Apache::lonxml::get_all_text("/accessrule",$parser);
452: } else {
453: $currentstring = $token->[4];
454: }
455: }
456: if ($target eq 'meta') {
457: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
458: }
459: return $currentstring;
460: }
461:
462: sub end_accessrule {
463: my ($target,$token,$tagstack,$parstack,$parser) = @_;
464: my $currentstring = '';
465: if ($target eq 'web') {
466: my $args='';
467: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
468: if ($args ne '') {
469: $currentstring = $token->[4];
470: }
471: }
472: return $currentstring;
473: }
474:
475: #-- <body> tag (end tag required)
476: sub start_body {
477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
478: my $currentstring = '';
479: if ($target eq 'web') {
480: if ($Apache::lonhomework::parsing_a_problem) {
481: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
482: return '';
483: }
484: if (!$Apache::lonxml::registered &&
485: $ENV{'request.state'} eq 'published') {
486: $currentstring.='<head>'.
487: &Apache::lonmenu::registerurl(undef,$target).'</head>';
488: }
489: # Accessibility
490: if ($ENV{'browser.imagesuppress'} eq 'on') {
491: delete($token->[2]->{'background'});
492: }
493: if ($ENV{'browser.fontenhance'} eq 'on') {
494: my $style='';
495: foreach my $key (keys(%{$token->[2]})) {
496: if ($key =~ /^style$/i) {
497: $style.=$token->[2]->{$key}.';';
498: delete($token->[2]->{$key});
499: }
500: }
501: $token->[2]->{'style'}=$style.'; font-size: x-large;';
502: }
503: if ($ENV{'browser.blackwhite'} eq 'on') {
504: delete($token->[2]->{'font'});
505: delete($token->[2]->{'link'});
506: delete($token->[2]->{'alink'});
507: delete($token->[2]->{'vlink'});
508: delete($token->[2]->{'bgcolor'});
509: delete($token->[2]->{'background'});
510: }
511: # Overload loads
512: my $onLoad='';
513: foreach my $key (keys(%{$token->[2]})) {
514: if ($key =~ /^onload$/i) {
515: $onLoad.=$token->[2]->{$key}.';';
516: delete($token->[2]->{$key});
517: }
518: }
519: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
520: my $onUnload='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^onunload$/i) {
523: $onUnload.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
528: ';'.$onUnload;
529:
530: $currentstring .= '<'.$token->[1];
531: foreach (keys %{$token->[2]}) {
532: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
533: }
534: $currentstring.='>';
535: if ($ENV{'request.state'} ne 'published') {
536: $currentstring.=(<<EDITBUTTON);
537: <form method="post">
538: <input type="submit" name="editmode" accesskey="e" value="Edit" />
539: </form>
540: EDITBUTTON
541: } else {
542: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
543: }
544: $currentstring.=&Apache::lonxml::message_location();
545: } elsif ($target eq 'tex') {
546: $currentstring = '\begin{document}';
547: }
548: return $currentstring;
549: }
550:
551: sub end_body {
552: my ($target,$token) = @_;
553: my $currentstring = '';
554: if ($target eq 'web') {
555: $currentstring = $token->[2];
556: } elsif ($target eq 'tex') {
557: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
558: }
559: return $currentstring;
560: }
561:
562: #-- <center> tag (end tag required)
563: sub start_center {
564: my ($target,$token) = @_;
565: my $currentstring = '';
566: if ($target eq 'web') {
567: $currentstring = $token->[4];
568: } elsif ($target eq 'tex') {
569: $currentstring = '\begin{center}';
570: }
571: return $currentstring;
572: }
573:
574: sub end_center {
575: my ($target,$token) = @_;
576: my $currentstring = '';
577: if ($target eq 'web') {
578: $currentstring = $token->[2];
579: } elsif ($target eq 'tex') {
580: $currentstring = '\end{center}';
581: }
582: return $currentstring;
583: }
584:
585: #-- <b> tag (end tag required)
586: sub start_b {
587: my ($target,$token) = @_;
588: my $currentstring = '';
589: if ($target eq 'web') {
590: $currentstring = $token->[4];
591: } elsif ($target eq 'tex') {
592: $currentstring = '\textbf{';
593: }
594: return $currentstring;
595: }
596:
597: sub end_b {
598: my ($target,$token) = @_;
599: my $currentstring = '';
600: if ($target eq 'web') {
601: $currentstring = $token->[2];
602: } elsif ($target eq 'tex') {
603: $currentstring = '}';
604: }
605: return $currentstring;
606: }
607:
608: #-- <strong> tag (end tag required)
609: sub start_strong {
610: my ($target,$token) = @_;
611: my $currentstring = '';
612: if ($target eq 'web') {
613: $currentstring = $token->[4];
614: } elsif ($target eq 'tex') {
615: $currentstring = '\textbf{';
616: }
617: return $currentstring;
618: }
619:
620: sub end_strong {
621: my ($target,$token) = @_;
622: my $currentstring = '';
623: if ($target eq 'web') {
624: $currentstring = $token->[2];
625: } elsif ($target eq 'tex') {
626: $currentstring = '}';
627: }
628: return $currentstring;
629: }
630:
631: #-- <h1> tag (end tag required)
632: sub start_h1 {
633: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
634: my $currentstring = '';
635: if ($target eq 'web') {
636: $currentstring .= $token->[4];
637: } elsif ($target eq 'tex') {
638: my $pre;
639: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
640: if (($align eq 'center') || (not defined $align)) {
641: $pre='\begin{center}';
642: } elsif ($align eq 'left') {
643: $pre='\rlap{';
644: } elsif ($align eq 'right') {
645: $pre=' \hfill \llap{';
646: }
647: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
648: if (not defined $TeXsize) {$TeXsize="large";}
649: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
650: } elsif ($target eq 'meta') {
651: $currentstring='<subject>';
652: &start_output($target);
653: }
654: return $currentstring;
655: }
656:
657: sub end_h1 {
658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
659: my $currentstring = '';
660: if ($target eq 'web') {
661: $currentstring .= $token->[2];
662: } elsif ($target eq 'tex') {
663: my $post;
664: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
665: if (($align eq 'center') || (not defined $align)) {
666: $post='\end{center}';
667: } elsif ($align eq 'left') {
668: $post='} \hfill'.'\vskip 0 mm ';
669: } elsif ($align eq 'right') {
670: $post='}'.'\vskip 0 mm ';
671: }
672: $currentstring .= '}}'.$post;
673: } elsif ($target eq 'meta') {
674: &end_output($target);
675: $currentstring='</subject>';
676: }
677: return $currentstring;
678: }
679:
680: #-- <h2> tag
681: sub start_h2 {
682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
683: my $currentstring = '';
684: if ($target eq 'web') {
685: $currentstring .= $token->[4];
686: } elsif ($target eq 'tex') {
687: my $pre;
688: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
689: if (($align eq 'center') || (not defined $align)) {
690: $pre='\begin{center}';
691: } elsif ($align eq 'left') {
692: $pre='\rlap{';
693: } elsif ($align eq 'right') {
694: $pre=' \hfill \llap{';
695: }
696: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
697: if (not defined $TeXsize) {$TeXsize="large";}
698: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
699: }
700: return $currentstring;
701: }
702:
703: sub end_h2 {
704: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
705: my $currentstring = '';
706: if ($target eq 'web') {
707: $currentstring .= $token->[2];
708: } elsif ($target eq 'tex') {
709: my $post;
710: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
711: if (($align eq 'center') || (not defined $align)) {
712: $post='\end{center}';
713: } elsif ($align eq 'left') {
714: $post='} \hfill'.'\vskip 0 mm ';
715: } elsif ($align eq 'right') {
716: $post='}'.'\vskip 0 mm ';
717: }
718: $currentstring .= '}}'.$post;
719: }
720: return $currentstring;
721: }
722:
723: #-- <h3> tag
724: sub start_h3 {
725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
726: my $currentstring = '';
727: if ($target eq 'web') {
728: $currentstring .= $token->[4];
729: } elsif ($target eq 'tex') {
730: my $pre;
731: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
732: if (($align eq 'center') || (not defined $align)) {
733: $pre='\begin{center}';
734: } elsif ($align eq 'left') {
735: $pre='\rlap{';
736: } elsif ($align eq 'right') {
737: $pre=' \hfill \llap{';
738: }
739: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
740: if (not defined $TeXsize) {$TeXsize="large";}
741: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
742: }
743: return $currentstring;
744: }
745:
746: sub end_h3 {
747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
748: my $currentstring = '';
749: if ($target eq 'web') {
750: $currentstring .= $token->[2];
751: } elsif ($target eq 'tex') {
752: my $post;
753: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
754: if (($align eq 'center') || (not defined $align)) {
755: $post='\end{center}';
756: } elsif ($align eq 'left') {
757: $post='} \hfill'.'\vskip 0 mm ';
758: } elsif ($align eq 'right') {
759: $post='}'.'\vskip 0 mm ';
760: }
761: $currentstring .= '}}'.$post;
762: }
763: return $currentstring;
764: }
765:
766: #-- <h4> tag
767: sub start_h4 {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
769: my $currentstring = '';
770: if ($target eq 'web') {
771: $currentstring .= $token->[4];
772: } elsif ($target eq 'tex') {
773: my $pre;
774: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
775: if (($align eq 'center') || (not defined $align)) {
776: $pre='\begin{center}';
777: } elsif ($align eq 'left') {
778: $pre='\rlap{';
779: } elsif ($align eq 'right') {
780: $pre=' \hfill \llap{';
781: }
782: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
783: if (not defined $TeXsize) {$TeXsize="large";}
784: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
785: }
786: return $currentstring;
787: }
788:
789: sub end_h4 {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
791: my $currentstring = '';
792: if ($target eq 'web') {
793: $currentstring .= $token->[2];
794: } elsif ($target eq 'tex') {
795: my $post;
796: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
797: if (($align eq 'center') || (not defined $align)) {
798: $post='\end{center}';
799: } elsif ($align eq 'left') {
800: $post='} \hfill'.'\vskip 0 mm ';
801: } elsif ($align eq 'right') {
802: $post='}'.'\vskip 0 mm ';
803: }
804: $currentstring .= '}}'.$post;
805: }
806: return $currentstring;
807: }
808:
809: #-- <h5> tag
810: sub start_h5 {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
812: my $currentstring = '';
813: if ($target eq 'web') {
814: $currentstring .= $token->[4];
815: } elsif ($target eq 'tex') {
816: my $pre;
817: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
818: if (($align eq 'center') || (not defined $align)) {
819: $pre='\begin{center}';
820: } elsif ($align eq 'left') {
821: $pre='\rlap{';
822: } elsif ($align eq 'right') {
823: $pre=' \hfill \llap{';
824: }
825: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
826: if (not defined $TeXsize) {$TeXsize="large";}
827: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
828: }
829: return $currentstring;
830: }
831:
832: sub end_h5 {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
834: my $currentstring = '';
835: if ($target eq 'web') {
836: $currentstring .= $token->[2];
837: } elsif ($target eq 'tex') {
838: my $post;
839: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
840: if (($align eq 'center') || (not defined $align)) {
841: $post='\end{center}';
842: } elsif ($align eq 'left') {
843: $post='} \hfill'.'\vskip 0 mm ';
844: } elsif ($align eq 'right') {
845: $post='}'.'\vskip 0 mm ';
846: }
847: $currentstring .= '}}'.$post;
848: }
849: return $currentstring;
850: }
851:
852: #-- <h6> tag
853: sub start_h6 {
854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
855: my $currentstring = '';
856: if ($target eq 'web') {
857: $currentstring .= $token->[4];
858: } elsif ($target eq 'tex') {
859: my $pre;
860: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
861: if (($align eq 'center') || (not defined $align)) {
862: $pre='\begin{center}';
863: } elsif ($align eq 'left') {
864: $pre='\rlap{';
865: } elsif ($align eq 'right') {
866: $pre=' \hfill \llap{';
867: }
868: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
869: if (not defined $TeXsize) {$TeXsize="large";}
870: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
871: }
872: return $currentstring;
873: }
874:
875: sub end_h6 {
876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
877: my $currentstring = '';
878: if ($target eq 'web') {
879: $currentstring .= $token->[2];
880: } elsif ($target eq 'tex') {
881: my $post;
882: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
883: if (($align eq 'center') || (not defined $align)) {
884: $post='\end{center}';
885: } elsif ($align eq 'left') {
886: $post='} \hfill'.'\vskip 0 mm ';
887: } elsif ($align eq 'right') {
888: $post='}'.'\vskip 0 mm ';
889: }
890: $currentstring .= '}}'.$post;
891: }
892: return $currentstring;
893: }
894:
895: #--- <cite> tag (end tag required)
896: sub start_cite {
897: my ($target,$token) = @_;
898: my $currentstring = '';
899: if ($target eq 'web') {
900: $currentstring .= $token->[4];
901: } elsif ($target eq 'tex') {
902: $currentstring .= '\textit{';
903: }
904: return $currentstring;
905: }
906:
907: sub end_cite {
908: my ($target,$token) = @_;
909: my $currentstring = '';
910: if ($target eq 'web') {
911: $currentstring .= $token->[2];
912: } elsif ($target eq 'tex') {
913: $currentstring .= '}';
914: }
915: return $currentstring;
916: }
917:
918: #-- <i> tag (end tag required)
919: sub start_i {
920: my ($target,$token) = @_;
921: my $currentstring = '';
922: if ($target eq 'web') {
923: $currentstring .= $token->[4];
924: } elsif ($target eq 'tex') {
925: $currentstring .= '\textit{';
926: }
927: return $currentstring;
928: }
929:
930: sub end_i {
931: my ($target,$token) = @_;
932: my $currentstring = '';
933: if ($target eq 'web') {
934: $currentstring .= $token->[2];
935: } elsif ($target eq 'tex') {
936: $currentstring .= '}';
937: }
938: return $currentstring;
939: }
940:
941: #-- <address> tag (end tag required)
942: sub start_address {
943: my ($target,$token) = @_;
944: my $currentstring = '';
945: if ($target eq 'web') {
946: $currentstring .= $token->[4];
947: } elsif ($target eq 'tex') {
948: $currentstring .= '\textit{';
949: }
950: return $currentstring;
951: }
952:
953: sub end_address {
954: my ($target,$token) = @_;
955: my $currentstring = '';
956: if ($target eq 'web') {
957: $currentstring .= $token->[2];
958: } elsif ($target eq 'tex') {
959: $currentstring .= '}';
960: }
961: return $currentstring;
962: }
963:
964: #-- <dfn> tag (end tag required)
965: sub start_dfn {
966: my ($target,$token) = @_;
967: my $currentstring = '';
968: if ($target eq 'web') {
969: $currentstring .= $token->[4];
970: } elsif ($target eq 'tex') {
971: $currentstring .= '\textit{';
972: }
973: return $currentstring;
974: }
975:
976: sub end_dfn {
977: my ($target,$token) = @_;
978: my $currentstring = '';
979: if ($target eq 'web') {
980: $currentstring .= $token->[2];
981: } elsif ($target eq 'tex') {
982: $currentstring .= '}';
983: }
984: return $currentstring;
985: }
986:
987: #-- <tt> tag (end tag required)
988: sub start_tt {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web') {
992: $currentstring .= $token->[4];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '\texttt{';
995: }
996: return $currentstring;
997: }
998:
999: sub end_tt {
1000: my ($target,$token) = @_;
1001: my $currentstring = '';
1002: if ($target eq 'web') {
1003: $currentstring .= $token->[2];
1004: } elsif ($target eq 'tex') {
1005: $currentstring .= '}';
1006: }
1007: return $currentstring;
1008: }
1009:
1010: #-- <kbd> tag (end tag required)
1011: sub start_kbd {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web') {
1015: $currentstring .= $token->[4];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '\texttt{';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: sub end_kbd {
1023: my ($target,$token) = @_;
1024: my $currentstring = '';
1025: if ($target eq 'web') {
1026: $currentstring .= $token->[2];
1027: } elsif ($target eq 'tex') {
1028: $currentstring .= '}';
1029: }
1030: return $currentstring;
1031: }
1032:
1033: #-- <code> tag (end tag required)
1034: sub start_code {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web') {
1038: $currentstring .= $token->[4];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '\texttt{';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: sub end_code {
1046: my ($target,$token) = @_;
1047: my $currentstring = '';
1048: if ($target eq 'web') {
1049: $currentstring .= $token->[2];
1050: } elsif ($target eq 'tex') {
1051: $currentstring .= '}';
1052: }
1053: return $currentstring;
1054: }
1055:
1056: #-- <em> tag (end tag required)
1057: sub start_em {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web') {
1061: $currentstring .= $token->[4];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '\emph{';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: sub end_em {
1069: my ($target,$token) = @_;
1070: my $currentstring = '';
1071: if ($target eq 'web') {
1072: $currentstring .= $token->[2];
1073: } elsif ($target eq 'tex') {
1074: $currentstring .= '}';
1075: }
1076: return $currentstring;
1077: }
1078:
1079: #-- <q> tag (end tag required)
1080: sub start_q {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web') {
1084: $currentstring .= $token->[4];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '\emph{';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: sub end_q {
1092: my ($target,$token) = @_;
1093: my $currentstring = '';
1094: if ($target eq 'web') {
1095: $currentstring .= $token->[2];
1096: } elsif ($target eq 'tex') {
1097: $currentstring .= '}';
1098: }
1099: return $currentstring;
1100: }
1101:
1102: #-- <p> tag (end tag optional)
1103: #optional attribute - align="center|left|right"
1104: sub start_p {
1105: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1111: if ($align eq 'center') {
1112: $currentstring='\begin{center}\par';
1113: } elsif ($align eq 'right') {
1114: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1115: } elsif ($align eq 'left') {
1116: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1117: }
1118: my $signal=1;#<p> does not work inside <b>...</b>
1119: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1120: if (!$signal) {$currentstring = '';}
1121: }
1122: }
1123: return $currentstring;
1124: }
1125:
1126: sub end_p {
1127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1128: my $currentstring = '';
1129: if ($target eq 'web') {
1130: $currentstring .= $token->[2];
1131: } elsif ($target eq 'tex') {
1132: if ($$tagstack[-1] eq 'p') {
1133: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1134: if ($align eq 'center') {
1135: $currentstring .= '\end{center}';
1136: } elsif ($align eq 'right') {
1137: $currentstring .= '}}';
1138: } elsif ($align eq 'left') {
1139: $currentstring .= '}\hfill}';
1140: }
1141: }
1142: }
1143: return $currentstring;
1144: }
1145:
1146: #-- <br> tag (end tag forbidden)
1147: sub start_br {
1148: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1149: my $currentstring = '';
1150: if ($target eq 'web') {
1151: $currentstring .= $token->[4];
1152: } elsif ($target eq 'tex') {
1153: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1154: $currentstring .= '\vskip 0.2 mm ';
1155: }
1156: }
1157: return $currentstring;
1158: }
1159:
1160: sub end_br {
1161: my ($target,$token) = @_;
1162: my $currentstring = '';
1163: if ($target eq 'web') {
1164: $currentstring .= $token->[2];
1165: }
1166: return $currentstring;
1167: }
1168:
1169: #-- <big> tag (end tag required)
1170: sub start_big {
1171: my ($target,$token) = @_;
1172: my $currentstring = '';
1173: if ($target eq 'web') {
1174: $currentstring .= $token->[4];
1175: } elsif ($target eq 'tex') {
1176: $currentstring .= '{\large ';
1177: }
1178: return $currentstring;
1179: }
1180:
1181: sub end_big {
1182: my ($target,$token) = @_;
1183: my $currentstring = '';
1184: if ($target eq 'web') {
1185: $currentstring .= $token->[2];
1186: } elsif ($target eq 'tex') {
1187: $currentstring .= '}';
1188: }
1189: return $currentstring;
1190: }
1191:
1192: #-- <small> tag (end tag required)
1193: sub start_small {
1194: my ($target,$token) = @_;
1195: my $currentstring = '';
1196: if ($target eq 'web') {
1197: $currentstring .= $token->[4];
1198: } elsif ($target eq 'tex') {
1199: $currentstring .= '{\footnotesize ';
1200: }
1201: return $currentstring;
1202: }
1203:
1204: sub end_small {
1205: my ($target,$token) = @_;
1206: my $currentstring = '';
1207: if ($target eq 'web') {
1208: $currentstring .= $token->[2];
1209: } elsif ($target eq 'tex') {
1210: $currentstring .= '}';
1211: }
1212: return $currentstring;
1213: }
1214:
1215: #-- <basefont> tag (end tag forbidden)
1216: sub start_basefont {
1217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1218: my $currentstring = '';
1219: if ($target eq 'web') {
1220: $currentstring = $token->[4];
1221: } elsif ($target eq 'tex') {
1222: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1223: if (defined $basesize) {
1224: $currentstring = '{\\'.$basesize.' ';
1225: }
1226: }
1227: return $currentstring;
1228: }
1229:
1230: sub end_basefont {
1231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1232: my $currentstring = '';
1233: if ($target eq 'web') {
1234: $currentstring = $token->[4];
1235: } elsif ($target eq 'tex') {
1236: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1237: if (defined $basesize) {
1238: $currentstring = '}';
1239: }
1240: }
1241: return $currentstring;
1242: }
1243:
1244: #-- <font> tag (end tag required)
1245: sub start_font {
1246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1247: my $currentstring = '';
1248: if ($target eq 'web') {
1249: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1250: if ($face=~/symbol/i) {
1251: $Apache::lonxml::prevent_entity_encode++;
1252: } else {
1253: if (($ENV{'browser.fontenhance'} eq 'on') ||
1254: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1255: }
1256: $currentstring = $token->[4];
1257: } elsif ($target eq 'tex') {
1258: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1259: if (defined $fontsize) {
1260: $currentstring = '{\\'.$fontsize.' ';
1261: }
1262: }
1263: return $currentstring;
1264: }
1265:
1266: sub end_font {
1267: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1268: my $currentstring = '';
1269: if ($target eq 'web') {
1270: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1271: if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
1272: $currentstring = $token->[2];
1273: } elsif ($target eq 'tex') {
1274: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1275: if (defined $fontsize) {
1276: $currentstring = '}';
1277: }
1278: }
1279: return $currentstring;
1280: }
1281:
1282: #-- <strike> tag (end tag required)
1283: sub start_strike {
1284: my ($target,$token) = @_;
1285: my $currentstring = '';
1286: if ($target eq 'web') {
1287: $currentstring .= $token->[4];
1288: } elsif ($target eq 'tex') {
1289: &Apache::lonxml::startredirection();
1290: }
1291: return $currentstring;
1292: }
1293:
1294: sub end_strike {
1295: my ($target,$token) = @_;
1296: my $currentstring = '';
1297: if ($target eq 'web') {
1298: $currentstring .= $token->[2];
1299: } elsif ($target eq 'tex') {
1300: $currentstring=&Apache::lonxml::endredirection();
1301: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1302: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1303: $currentstring=~s/(\S)\s*$/$1\}/;
1304: }
1305: return $currentstring;
1306: }
1307:
1308: #-- <s> tag (end tag required)
1309: sub start_s {
1310: my ($target,$token) = @_;
1311: my $currentstring = '';
1312: if ($target eq 'web') {
1313: $currentstring .= $token->[4];
1314: } elsif ($target eq 'tex') {
1315: &Apache::lonxml::startredirection();
1316: }
1317: return $currentstring;
1318: }
1319:
1320: sub end_s {
1321: my ($target,$token) = @_;
1322: my $currentstring = '';
1323: if ($target eq 'web') {
1324: $currentstring .= $token->[2];
1325: } elsif ($target eq 'tex') {
1326: $currentstring=&Apache::lonxml::endredirection();
1327: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1328: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1329: $currentstring=~s/(\S)\s*$/$1\}/;
1330: }
1331: return $currentstring;
1332: }
1333:
1334: #-- <sub> tag (end tag required)
1335: sub start_sub {
1336: my ($target,$token) = @_;
1337: my $currentstring = '';
1338: if ($target eq 'web') {
1339: $currentstring .= $token->[4];
1340: } elsif ($target eq 'tex') {
1341: $currentstring .= "\$_{";
1342: }
1343: return $currentstring;
1344: }
1345:
1346: sub end_sub {
1347: my ($target,$token) = @_;
1348: my $currentstring = '';
1349: if ($target eq 'web') {
1350: $currentstring .= $token->[2];
1351: } elsif ($target eq 'tex') {
1352: $currentstring .= "}\$";
1353: }
1354: return $currentstring;
1355: }
1356:
1357: #-- <sup> tag (end tag required)
1358: sub start_sup {
1359: my ($target,$token) = @_;
1360: my $currentstring = '';
1361: if ($target eq 'web') {
1362: $currentstring .= $token->[4];
1363: } elsif ($target eq 'tex') {
1364: $currentstring .= "\$^{";
1365: }
1366: return $currentstring;
1367: }
1368:
1369: sub end_sup {
1370: my ($target,$token) = @_;
1371: my $currentstring = '';
1372: if ($target eq 'web') {
1373: $currentstring .= $token->[2];
1374: } elsif ($target eq 'tex') {
1375: $currentstring .= "}\$";
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <hr> tag (end tag forbidden)
1381: sub start_hr {
1382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1388: if (defined $LaTeXwidth) {
1389: if ($LaTeXwidth=~/^%/) {
1390: substr($LaTeXwidth,0,1)='';
1391: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1392: }
1393: } else {
1394: $LaTeXwidth ='0.9\textwidth';
1395: }
1396: my ($pre,$post);
1397: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1398: if (($align eq 'center') || (not defined $align)) {
1399: $pre=''; $post='';
1400: } elsif ($align eq 'left') {
1401: $pre='\rlap{'; $post='} \hfill';
1402: } elsif ($align eq 'right') {
1403: $pre=' \hfill \llap{'; $post='}';
1404: }
1405: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1406: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1407: }
1408: return $currentstring;
1409: }
1410:
1411: sub end_hr {
1412: my ($target,$token) = @_;
1413: my $currentstring = '';
1414: if ($target eq 'web') {
1415: $currentstring .= $token->[2];
1416: }
1417: return $currentstring;
1418: }
1419:
1420: #-- <div> tag (end tag required)
1421: sub start_div {
1422: my ($target,$token) = @_;
1423: my $currentstring = '';
1424: if ($target eq 'web') {
1425: $currentstring .= $token->[4];
1426: }
1427: return $currentstring;
1428: }
1429:
1430: sub end_div {
1431: my ($target,$token) = @_;
1432: my $currentstring = '';
1433: if ($target eq 'web') {
1434: $currentstring .= $token->[2];
1435: }
1436: return $currentstring;
1437: }
1438:
1439: #-- <a> tag (end tag required)
1440: sub start_a {
1441: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web') {
1444: $currentstring .= $token->[4];
1445: } elsif ($target eq 'tex') {
1446: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1447: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1448: if ($a=~/\S/) {
1449: $a=~s/([^\\])%/$1\\\%/g;
1450: $currentstring .= '\ref{URI: '.$a.'}';
1451: } elsif ($b=~/\S/) {
1452: $currentstring .= '\ref{Anchor: '.$b.'}';
1453: } else {
1454: $currentstring.='';
1455: }
1456: }
1457: return $currentstring;
1458: }
1459:
1460: sub end_a {
1461: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1462: my $currentstring = '';
1463: if ($target eq 'web') {
1464: $currentstring .= $token->[2];
1465: }
1466: return $currentstring;
1467: }
1468:
1469: #-- <li> tag (end tag optional)
1470: sub start_li {
1471: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1472: my $currentstring = '';
1473: if ($target eq 'web') {
1474: $currentstring = $token->[4];
1475: } elsif ($target eq 'tex') {
1476: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1477: if ($type=~/circle/) {
1478: $currentstring .= ' \item[o] ';
1479: } elsif ($type=~/square/) {
1480: $currentstring .= ' \item[$\Box$] ';
1481: } elsif ($type ne '') {
1482: $currentstring .= ' \item['.$type.'] ';
1483: } else {
1484: $currentstring .= ' \item ';
1485: }
1486: }
1487: return $currentstring;
1488: }
1489:
1490: sub end_li {
1491: my ($target,$token) = @_;
1492: my $currentstring = '';
1493: if ($target eq 'web') {
1494: $currentstring = $token->[2];
1495: }
1496: return $currentstring;
1497: }
1498:
1499: #-- <u> tag (end tag required)
1500: sub start_u {
1501: my ($target,$token) = @_;
1502: my $currentstring = '';
1503: if ($target eq 'web') {
1504: $currentstring .= $token->[4];
1505: } elsif ($target eq 'tex') {
1506: &Apache::lonxml::startredirection();
1507: }
1508: return $currentstring;
1509: }
1510:
1511: sub end_u {
1512: my ($target,$token) = @_;
1513: my $currentstring = '';
1514: if ($target eq 'web') {
1515: $currentstring .= $token->[2];
1516: } elsif ($target eq 'tex') {
1517: $currentstring=&Apache::lonxml::endredirection();
1518: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1519: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1520: $currentstring=~s/(\S)\s*$/$1\}/;
1521: }
1522: return $currentstring;
1523: }
1524:
1525: #-- <ul> tag (end tag required)
1526: sub start_ul {
1527: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1528: my $currentstring = '';
1529: if ($target eq 'web') {
1530: $currentstring = $token->[4];
1531: } elsif ($target eq 'tex') {
1532: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1533: if ($TeXtype eq 'disc') {
1534: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1535: \renewcommand{\labelitemii}{$\bullet$}
1536: \renewcommand{\labelitemiii}{$\bullet$}
1537: \renewcommand{\labelitemiv}{$\bullet$}';
1538: } elsif ($TeXtype eq 'circle') {
1539: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1540: \renewcommand{\labelitemii}{$\circ$}
1541: \renewcommand{\labelitemiii}{$\circ$}
1542: \renewcommand{\labelitemiv}{$\circ$}';
1543: } elsif ($TeXtype eq 'square') {
1544: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1545: \renewcommand{\labelitemii}{$\diamond$}
1546: \renewcommand{\labelitemiii}{$\diamond$}
1547: \renewcommand{\labelitemiv}{$\diamond$}';
1548: }
1549: $currentstring .= '\begin{itemize}';
1550: }
1551: return $currentstring;
1552: }
1553:
1554: sub end_ul {
1555: my ($target,$token) = @_;
1556: my $currentstring = '';
1557: if ($target eq 'web') {
1558: $currentstring = $token->[2];
1559: } elsif ($target eq 'tex') {
1560: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1561: \renewcommand{\labelitemii}{$\bullet$}
1562: \renewcommand{\labelitemiii}{$\bullet$}
1563: \renewcommand{\labelitemiv}{$\bullet$}';
1564: }
1565: return $currentstring;
1566: }
1567:
1568: #-- <menu> tag (end tag required)
1569: sub start_menu {
1570: my ($target,$token) = @_;
1571: my $currentstring = '';
1572: if ($target eq 'web') {
1573: $currentstring = $token->[4];
1574: } elsif ($target eq 'tex') {
1575: $currentstring = " \\begin{itemize} ";
1576: }
1577: return $currentstring;
1578: }
1579:
1580: sub end_menu {
1581: my ($target,$token) = @_;
1582: my $currentstring = '';
1583: if ($target eq 'web') {
1584: $currentstring = $token->[2];
1585: } elsif ($target eq 'tex') {
1586: $currentstring = " \\end{itemize}";
1587: }
1588: return $currentstring;
1589: }
1590:
1591: #-- <dir> tag (end tag required)
1592: sub start_dir {
1593: my ($target,$token) = @_;
1594: my $currentstring = '';
1595: if ($target eq 'web') {
1596: $currentstring = $token->[4];
1597: } elsif ($target eq 'tex') {
1598: $currentstring = " \\begin{itemize} ";
1599: }
1600: return $currentstring;
1601: }
1602:
1603: sub end_dir {
1604: my ($target,$token) = @_;
1605: my $currentstring = '';
1606: if ($target eq 'web') {
1607: $currentstring = $token->[2];
1608: } elsif ($target eq 'tex') {
1609: $currentstring = " \\end{itemize}";
1610: }
1611: return $currentstring;
1612: }
1613:
1614: #-- <ol> tag (end tag required)
1615: sub start_ol {
1616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1617: my $currentstring = '';
1618: if ($target eq 'web') {
1619: $currentstring = $token->[4];
1620: } elsif ($target eq 'tex') {
1621: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1622: if ($type eq '1') {
1623: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1624: \renewcommand{\labelenumii}{\arabic{enumii}.}
1625: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1626: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1627: } elsif ($type eq 'A') {
1628: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1629: \renewcommand{\labelenumii}{\Alph{enumii}.}
1630: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1631: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1632: } elsif ($type eq 'a') {
1633: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1634: \renewcommand{\labelenumii}{\alph{enumii}.}
1635: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1636: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1637: } elsif ($type eq 'i') {
1638: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1639: \renewcommand{\labelenumii}{\roman{enumii}.}
1640: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1641: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1642: } elsif ($type eq 'I') {
1643: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1644: \renewcommand{\labelenumii}{\Roman{enumii}.}
1645: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1646: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1647: }
1648: $currentstring .= '\begin{enumerate}';
1649: }
1650: return $currentstring;
1651: }
1652:
1653: sub end_ol {
1654: my ($target,$token) = @_;
1655: my $currentstring = '';
1656: if ($target eq 'web') {
1657: $currentstring = $token->[2];
1658: } elsif ($target eq 'tex') {
1659: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1660: \renewcommand{\labelenumii}{\arabic{enumii}.}
1661: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1662: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1663: }
1664: return $currentstring;
1665: }
1666:
1667: #-- <dl> tag (end tag required)
1668: sub start_dl {
1669: my ($target,$token) = @_;
1670: my $currentstring = '';
1671: if ($target eq 'web') {
1672: $currentstring = $token->[4];
1673: } elsif ($target eq 'tex') {
1674: $currentstring = '\begin{description}';
1675: @Apache::londefdef::description=();
1676: $Apache::londefdef::DD_redirection=0;
1677: $Apache::londefdef::DT_redirection=0;
1678: }
1679: return $currentstring;
1680: }
1681:
1682: sub end_dl {
1683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1684: my $currentstring = '';
1685: if ($target eq 'web') {
1686: $currentstring = $token->[2];
1687: } elsif ($target eq 'tex') {
1688: if ($Apache::londefdef::DT_redirection) {
1689: my $data=&item_cleanup;
1690: push @Apache::londefdef::description,'\item['.$data.']';
1691: $Apache::londefdef::DT_redirection=0;
1692: } elsif ($Apache::londefdef::DD_redirection) {
1693: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1694: }
1695: foreach my $element (@Apache::londefdef::description) {
1696: $currentstring.=' '.$element.' ';
1697: }
1698: @Apache::londefdef::description=();
1699: $currentstring.='\end{description}';
1700: }
1701: return $currentstring;
1702: }
1703:
1704: #-- <dt> tag (end tag optional)
1705: sub start_dt {
1706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1707: my $currentstring='';
1708: if ($target eq 'web') {
1709: $currentstring = $token->[4];
1710: } elsif ($target eq 'tex') {
1711: if ($Apache::londefdef::DT_redirection) {
1712: my $data=&item_cleanup;
1713: push @Apache::londefdef::description,'\item['.$data.']';
1714: $Apache::londefdef::DT_redirection=0;
1715: } elsif ($Apache::londefdef::DD_redirection) {
1716: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1717: $Apache::londefdef::DD_redirection=0;
1718: }
1719: &Apache::lonxml::startredirection();
1720: $Apache::londefdef::DT_redirection=1;
1721: }
1722: return $currentstring;
1723: }
1724:
1725: sub end_dt {
1726: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1727: my $currentstring = '';
1728: if ($target eq 'web') {
1729: $currentstring = $token->[2];
1730: } elsif ($target eq 'tex') {
1731: my $data=&item_cleanup;
1732: push @Apache::londefdef::description,'\item['.$data.']';
1733: $Apache::londefdef::DT_redirection=0;
1734: }
1735: return $currentstring;
1736: }
1737:
1738: sub item_cleanup {
1739: my $item=&Apache::lonxml::endredirection();
1740: $item=~s/\\begin{center}//g;
1741: $item=~s/\\end{center}//g;
1742: return $item;
1743: }
1744:
1745: #-- <dd> tag (end tag optional)
1746: sub start_dd {
1747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1748: my $currentstring = '';
1749: if ($target eq 'web') {
1750: $currentstring = $token->[4];
1751: } elsif ($target eq 'tex') {
1752: if ($Apache::londefdef::DT_redirection) {
1753: my $data=&item_cleanup;
1754: push @Apache::londefdef::description,'\item['.$data.']';
1755: $Apache::londefdef::DT_redirection=0;
1756: }
1757: $Apache::londefdef::DD_redirection=1;
1758: &Apache::lonxml::startredirection();
1759: }
1760: return $currentstring;
1761: }
1762:
1763: sub end_dd {
1764: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1765: my $currentstring = '';
1766: if ($target eq 'web') {
1767: $currentstring = $token->[2];
1768: } elsif ($target eq 'tex') {
1769: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1770: $Apache::londefdef::DD_redirection=0;
1771: }
1772: return $currentstring;
1773: }
1774:
1775: #-- <table> tag (end tag required)
1776: sub start_table {
1777: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1778: my $textwidth='';
1779: if (not defined @Apache::londefdef::table) {
1780: $textwidth=&recalc($ENV{'form.textwidth'});
1781: $textwidth=~/(\d+\.?\d*)/;
1782: $textwidth=0.95*$1;
1783: } else {
1784: $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1785: }
1786: my $currentstring = '';
1787: if ($target eq 'web') {
1788: $currentstring = $token->[4];
1789: } elsif ($target eq 'tex') {
1790: my $aa = {};
1791: push @Apache::londefdef::table, $aa;
1792: $Apache::londefdef::table[-1]{'row_number'} = -1;
1793: #table's width
1794: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1795: if (not defined $TeXwidth) {
1796: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1797: if ($htmlwidth=~/%/) {
1798: $htmlwidth=~/(\d+)/;
1799: my $value=$1*$textwidth/100;
1800: $Apache::londefdef::table[-1]{'width'}=$value;
1801: } else {
1802: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1803: }
1804: } elsif ($TeXwidth=~/%/) {
1805: $TeXwidth=~/(\d+)/;
1806: my $value=$1*$textwidth/100;
1807: $Apache::londefdef::table[-1]{'width'}=$value;
1808: } else {
1809: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1810: }
1811: #table's border
1812: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);
1813: unless (defined $border) { $border = 0; }
1814: if ($border) {
1815: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1816: $Apache::londefdef::table[-1]{'vinc'} = '&';
1817: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1818: } else {
1819: $Apache::londefdef::table[-1]{'hinc'} = '';
1820: $Apache::londefdef::table[-1]{'vinc'} = '&';
1821: $Apache::londefdef::table[-1]{'vvinc'} = '';
1822: }
1823: $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
1824: $currentstring = '\keephidden{NEW TABLE ENTRY}';
1825: }
1826: return $currentstring;
1827: }
1828:
1829: sub end_table {
1830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1831: my $currentstring = '';
1832: if ($target eq 'web') {
1833: $currentstring = $token->[2];
1834: } elsif ($target eq 'tex') {
1835: my $inmemory = '';
1836: my $output = '';
1837: #construct header of the table
1838: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1839: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
1840: $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
1841: }
1842: $header_of_table .= '}';
1843: #define the length of the table cells
1844: #always starts with TeXwidth (if defined everything else is ignored)
1845: my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
1846: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1847: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
1848: for (my $jn=0;$jn<=$#length_row;$jn++) {
1849: if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
1850: }
1851: }
1852: #continues trying estimate the width of raw data
1853: my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
1854: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1855: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
1856: for (my $jn=0;$jn<=$#length_row;$jn++) {
1857: if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
1858: }
1859: }
1860: #comparing of TeXwidth and raw data width
1861: my $available_length=$Apache::londefdef::table[-1]{'width'};
1862: my $needed=0;
1863: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1864: if ($length_row_final[$jn]!=0) {
1865: $available_length=$available_length-$length_row_final[$jn];
1866: $needed++;
1867: }
1868: }
1869: $needed=$#length_row_final-$needed+1;
1870: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1871: if ($length_row_final[$jn]==0) {
1872: if ($length_raw_row[$jn]<$available_length) {
1873: $length_row_final[$jn]=$length_raw_row[$jn];
1874: $available_length=$available_length-$length_raw_row[$jn];
1875: $needed--;
1876: }
1877: }
1878: }
1879: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1880: if ($length_row_final[$jn]==0) {
1881: $length_row_final[$jn]=0.9*$available_length/$needed;
1882: }
1883: }
1884: #fill the table
1885: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1886: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1887: my $substituted=$length_row_final[$jn];
1888: $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
1889: }
1890: $output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
1891: chop $output;
1892: $output .= ' \\\\ ';
1893: }
1894: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
1895: if ($#Apache::londefdef::table > 0) {
1896: my $inmemory = $Apache::londefdef::table[-1]{'output'};
1897: pop @Apache::londefdef::table;
1898: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
1899: } else {
1900: $currentstring .= $Apache::londefdef::table[-1]{'output'};
1901: pop @Apache::londefdef::table;
1902: undef @Apache::londefdef::table;
1903: }
1904: }
1905: return $currentstring;
1906: }
1907:
1908: #-- <tr> tag (end tag optional)
1909: sub start_tr {
1910: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1911: my $currentstring = '';
1912: if ($target eq 'web') {
1913: $currentstring = $token->[4];
1914: } elsif ($target eq 'tex') {
1915: $Apache::londefdef::table[-1]{'row_number'}++;
1916: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1917: if ($alignchar ne '') {
1918: push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
1919: } else {
1920: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
1921: }
1922: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
1923: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
1924: $Apache::londefdef::table[-1]{'TeXlength'} = '';
1925: $Apache::londefdef::table[-1]{'length'} = '';
1926: }
1927: return $currentstring;
1928: }
1929:
1930: sub end_tr {
1931: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1932: my $currentstring = '';
1933: if ($target eq 'web') {
1934: $currentstring = $token->[2];
1935: } elsif ($target eq 'tex') {
1936: if ($Apache::londefdef::TD_redirection) {
1937: &end_td_tex($parstack,$parser,$safeeval);
1938: }
1939: push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
1940: push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
1941: }
1942: return $currentstring;
1943: }
1944:
1945: #-- <td> tag (end tag optional)
1946: sub start_td {
1947: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1948: my $currentstring = '';
1949: if ($target eq 'web') {
1950: $currentstring = $token->[4];
1951: } elsif ($target eq 'tex') {
1952: $Apache::londefdef::TD_redirection = 1;
1953: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
1954: }
1955: return $currentstring;
1956: }
1957:
1958: sub tag_check {
1959: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
1960: my @ar=@$parstack;
1961: for (my $i=$#ar-1;$i>=0;$i--) {
1962: if (lc($$tagstack[$i]) eq $good_tag) {
1963: &start_td_tex($parstack,$parser,$safeeval);
1964: last;
1965: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
1966: splice @ar, $i+1;
1967: &end_td_tex(\@ar,$parser,$safeeval);
1968: &start_td_tex($parstack,$parser,$safeeval);
1969: last;
1970: }
1971: }
1972: return '';
1973: }
1974:
1975: sub start_td_tex {
1976: my ($parstack,$parser,$safeeval) = @_;
1977: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1978: if ($what_to_push eq '') {
1979: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
1980: }
1981: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
1982: $Apache::londefdef::table[-1]{'counter_columns'}++;
1983: &Apache::lonxml::startredirection();
1984: return '';
1985: }
1986:
1987: sub end_td_tex {
1988: my ($parstack,$parser,$safeeval) = @_;
1989: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
1990: my $data=&Apache::lonxml::endredirection();
1991: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1992: if (defined $TeXwidth) {
1993: my $current_length=&recalc($TeXwidth);
1994: $current_length=~/(\d+)/;
1995: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
1996: $Apache::londefdef::table[-1]{'length'} .= '0,';
1997: } else {
1998: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
1999: my $current_length=&recalc($1);
2000: $current_length=~/(\d+\.?\d*)/;
2001: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2002: $Apache::londefdef::table[-1]{'length'} .= '0,';
2003: } else {
2004: $data=~s/^\s+(\S.*)/$1/;
2005: $data=~s/(.*\S)\s+$/$1/;
2006: $data=~s/(\s)+/$1/;
2007: my $current_length=0;
2008: if ($data=~/\\vskip/) {
2009: my $newdata=$data;
2010: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2011: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2012: foreach my $elementdata (@newdata) {
2013: my $lengthnewdata=1.8*LATEX_length($elementdata);
2014: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2015: }
2016: } else {
2017: $current_length=1.8*LATEX_length($data);
2018: }
2019: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2020: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2021: }
2022: }
2023: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2024: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2025: }
2026: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2027: return'';
2028: }
2029:
2030: sub end_td {
2031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2032: my $currentstring = '';
2033: if ($target eq 'web') {
2034: $currentstring = $token->[2];
2035: } elsif ($target eq 'tex') {
2036: $Apache::londefdef::TD_redirection =0;
2037: &end_td_tex($parstack,$parser,$safeeval);
2038: }
2039: return $currentstring;
2040: }
2041:
2042: #-- <th> tag (end tag optional)
2043: sub start_th {
2044: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2045: my $currentstring = '';
2046: if ($target eq 'web') {
2047: $currentstring = $token->[4];
2048: } elsif ($target eq 'tex') {
2049: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2050: if ($what_to_push eq '') {
2051: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2052: }
2053: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2054: $Apache::londefdef::table[-1]{'counter_columns'}++;
2055: &Apache::lonxml::startredirection();
2056: }
2057: return $currentstring;
2058: }
2059:
2060: sub end_th {
2061: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2062: my $currentstring = '';
2063: if ($target eq 'web') {
2064: $currentstring = $token->[2];
2065: } elsif ($target eq 'tex') {
2066: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2067: my $data=&Apache::lonxml::endredirection();
2068: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2069: if (defined $TeXwidth) {
2070: my $current_length=&recalc($TeXwidth);
2071: $current_length=~/(\d+)/;
2072: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2073: $Apache::londefdef::table[-1]{'length'} .= '0,';
2074: } else {
2075: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2076: my $current_length=&recalc($1);
2077: $current_length=~/(\d+)/;
2078: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2079: $Apache::londefdef::table[-1]{'length'} .= '0,';
2080: } else {
2081: $data=~/^\s*(\S.*)/;
2082: $data=$1;
2083: $data=~/(.*\S)\s*$/;
2084: $data=$1;
2085: my $current_length=2*length($data);
2086: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2087: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2088: }
2089: }
2090: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2091: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2092: }
2093: $data='\textbf{'.$data.'}';
2094: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2095: }
2096: return $currentstring;
2097: }
2098: #-- <img> tag (end tag forbidden)
2099: sub start_img {
2100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2101: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2102: undef,1);
2103: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2104: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2105: &Apache::lonnet::logthis("inside was $inside");
2106: return '';
2107: }
2108: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2109: my $currentstring = '';
2110: my $scaling = .3;
2111: if ($target eq 'web') {
2112: if ($ENV{'browser.imagesuppress'} ne 'on') {
2113: $currentstring.= $token->[4];
2114: } else {
2115: my $alttag= &Apache::lonxml::get_param
2116: ('alt',$parstack,$safeeval,undef,1);
2117: unless ($alttag) {
2118: $alttag=&Apache::lonmeta::alttag
2119: ($Apache::lonxml::pwd[-1],$src);
2120: }
2121: $currentstring.='[IMAGE: '.$alttag.']';
2122: }
2123: } elsif ($target eq 'tex') {
2124: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2125: #if original gif/jpg/png file exist do following:
2126: if (-e $src) {
2127: #what is the image size?
2128: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2129: my ($file,$path)=&file_path($src);
2130: my $newsrc = $src;
2131: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2132: $file=~s/\.(gif|jpg|png)$/.eps/i;
2133: #where can we find the picture?
2134: if (-e $newsrc) {
2135: #eps counterpart for image exist
2136: if ($path) {
2137: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2138: }
2139: } else {
2140: #there is no eps counterpart for image - check for ps one
2141: $newsrc =~ s/\.eps$/\.ps/;
2142: if (-e $newsrc) {
2143: #ps counterpart for image exist
2144: $file =~ s/\.eps$/\.ps/;
2145: if ($path) {
2146: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2147: }
2148: } else {
2149: #care about eps dynamical generation
2150: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2151: }
2152: }
2153: } else {
2154: #original image file doesn't exist so check the alt attribute
2155: my $alt =
2156: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2157: unless ($alt) {
2158: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2159: }
2160:
2161: if ($alt) {
2162: $currentstring .= ' '.$alt.' ';
2163: } else {
2164: #<allow> tag will care about replication
2165: }
2166: }
2167: } elsif ($target eq 'edit') {
2168: $currentstring .=&Apache::edit::tag_start($target,$token);
2169: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2170: &Apache::edit::browse('src',undef,'alt').' '.
2171: &Apache::edit::search('src',undef,'alt').'<br />';
2172: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2173: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2174: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2175: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2176: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2177: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2178: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2179: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2180: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2181: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2182: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2183: if ($width) { $currentstring.=' width="'.$width.'" '; }
2184: if ($height) { $currentstring.=' height="'.$height.'" '; }
2185: $currentstring .= ' />';
2186: } elsif ($target eq 'modified') {
2187: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2188: $safeeval,'src','alt',
2189: 'TeXwidth','TeXheight',
2190: 'width','height');
2191: $src=$token->[2]{'src'};
2192: if (!$token->[2]{'width'} && !$token->[2]{'height'}) {
2193: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2194: &image_replication($src);
2195: if (-e $src) {
2196: my $image = Image::Magick->new;
2197: my ($width, $height, $size, $format) = $image->Ping($src);
2198: if ($width && $height) {
2199: $token->[2]{'width'} =$width;
2200: $token->[2]{'height'}=$height;
2201: $constructtag=1;
2202: }
2203: }
2204: }
2205: if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2206: }
2207: return $currentstring;
2208: }
2209:
2210: sub end_img {
2211: my ($target,$token) = @_;
2212: my $currentstring = '';
2213: if ($target eq 'web') {
2214: $currentstring = $token->[2];
2215: } elsif ($target eq 'tex') {
2216: $currentstring = '';
2217: }
2218: return $currentstring;
2219: }
2220:
2221: #-- <applet> tag (end tag required)
2222: sub start_applet {
2223: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2224:
2225: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2226: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2227:
2228: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2229: undef,1);
2230: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2231:
2232: my $currentstring = '';
2233: if ($target eq 'web') {
2234: if ($ENV{'browser.appletsuppress'} ne 'on') {
2235: $currentstring = $token->[4];
2236: } else {
2237: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2238: $safeeval,undef,1);
2239: unless ($alttag) {
2240: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2241: $code);
2242: }
2243: $currentstring='[APPLET: '.$alttag.']';
2244: }
2245: } elsif ($target eq 'tex') {
2246: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2247: $safeeval,undef,1);
2248: unless ($alttag) {
2249: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2250: undef,1);
2251: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2252: $code);
2253: }
2254: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2255: '.}\end{center}';
2256: }
2257: return $currentstring;
2258: }
2259:
2260: sub end_applet {
2261: my ($target,$token) = @_;
2262: my $currentstring = '';
2263: if ($target eq 'web') {
2264: $currentstring = $token->[2];
2265: } elsif ($target eq 'tex') {
2266: }
2267: return $currentstring;
2268: }
2269:
2270: #-- <embed> tag (end tag optional/required)
2271: sub start_embed {
2272: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2273: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2274: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2275: my $currentstring = '';
2276: if ($target eq 'web') {
2277: if ($ENV{'browser.embedsuppress'} ne 'on') {
2278: $currentstring = $token->[4];
2279: } else {
2280: my $alttag=&Apache::lonxml::get_param
2281: ('alt',$parstack,$safeeval,undef,1);
2282: unless ($alttag) {
2283: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2284: }
2285: $currentstring='[EMBED: '.$alttag.']';
2286: }
2287: } elsif ($target eq 'tex') {
2288: }
2289: return $currentstring;
2290: }
2291:
2292: sub end_embed {
2293: my ($target,$token) = @_;
2294: my $currentstring = '';
2295: if ($target eq 'web') {
2296: $currentstring = $token->[2];
2297: } elsif ($target eq 'tex') {
2298: }
2299: return $currentstring;
2300: }
2301:
2302: #-- <param> tag (end tag forbidden)
2303: sub start_param {
2304: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2305: if (&Apache::lonxml::get_param
2306: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2307: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2308: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2309: }
2310: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2311: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2312: my $currentstring = '';
2313: if ($target eq 'web') {
2314: $currentstring = $token->[4];
2315: } elsif ($target eq 'tex') {
2316: }
2317: return $currentstring;
2318: }
2319:
2320: sub end_param {
2321: my ($target,$token) = @_;
2322: my $currentstring = '';
2323: if ($target eq 'web') {
2324: $currentstring = $token->[2];
2325: } elsif ($target eq 'tex') {
2326: }
2327: return $currentstring;
2328: }
2329:
2330: #-- <allow> tag
2331: sub start_allow {
2332: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2333: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2334: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2335: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2336: &Apache::lonnet::clutter($src);
2337: &image_replication($src);
2338: my $result;
2339: if ($target eq 'edit') {
2340: $result .=&Apache::edit::tag_start($target,$token);
2341: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2342: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2343: } elsif ($target eq 'modified') {
2344: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2345: $safeeval,'src');
2346: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2347: }
2348: return $result;
2349: }
2350:
2351: sub end_allow {
2352: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2353: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2354: return '';
2355: }
2356:
2357: #-- Frames (end tag required)
2358: #-- <frameset>
2359: sub start_frameset {
2360: my ($target,$token) = @_;
2361: my $currentstring = '';
2362: if ($target eq 'web') {
2363: if (!$Apache::lonxml::registered &&
2364: $ENV{'request.state'} eq 'published') {
2365: $currentstring.='<head>'.
2366: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2367: }
2368: my $onLoad='';
2369: foreach my $key (keys(%{$token->[2]})) {
2370: if ($key =~ /^onload$/i) {
2371: $onLoad.=$token->[2]->{$key}.';';
2372: delete($token->[2]->{$key});
2373: }
2374: }
2375: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2376: my $onUnload='';
2377: foreach my $key (keys(%{$token->[2]})) {
2378: if ($key =~ /^onunload$/i) {
2379: $onUnload.=$token->[2]->{$key}.';';
2380: delete($token->[2]->{$key});
2381: }
2382: }
2383: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2384: ';'.$onUnload;
2385:
2386: $currentstring .= '<'.$token->[1];
2387: foreach (keys %{$token->[2]}) {
2388: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2389: }
2390: $currentstring.='>';
2391: }
2392: return $currentstring;
2393: }
2394:
2395: sub end_frameset {
2396: my ($target,$token) = @_;
2397: my $currentstring = '';
2398: if ($target eq 'web') {
2399: $currentstring = $token->[2];
2400: }
2401: return $currentstring;
2402: }
2403:
2404: #-- <xmp> (end tag required)
2405: sub start_xmp {
2406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2407: my $currentstring = '';
2408: if ($target eq 'web') {
2409: $currentstring .= $token->[4];
2410: } elsif ($target eq 'tex') {
2411: $currentstring .= '\begin{verbatim}';
2412: }
2413: return $currentstring;
2414: }
2415:
2416: sub end_xmp {
2417: my ($target,$token) = @_;
2418: my $currentstring = '';
2419: if ($target eq 'web') {
2420: $currentstring .= $token->[2];
2421: } elsif ($target eq 'tex') {
2422: $currentstring .= '\end{verbatim}';
2423: }
2424: return $currentstring;
2425: }
2426:
2427: #-- <pre> (end tag required)
2428: sub start_pre {
2429: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2430: my $currentstring = '';
2431: if ($target eq 'web') {
2432: $currentstring .= $token->[4];
2433: } elsif ($target eq 'tex') {
2434: $currentstring .= '\begin{verbatim}';
2435: }
2436: return $currentstring;
2437: }
2438:
2439: sub end_pre {
2440: my ($target,$token) = @_;
2441: my $currentstring = '';
2442: if ($target eq 'web') {
2443: $currentstring .= $token->[2];
2444: } elsif ($target eq 'tex') {
2445: $currentstring .= '\end{verbatim}';
2446: }
2447: return $currentstring;
2448: }
2449:
2450: #-- <insert>
2451: sub start_insert {
2452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2453: my $currentstring = '';
2454: if ($target eq 'web') {
2455: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2456: $currentstring .= '<b>'.$display.'</b>';;
2457: }
2458: return $currentstring;
2459: }
2460:
2461: sub end_insert {
2462: my ($target,$token) = @_;
2463: my $currentstring = '';
2464: if ($target eq 'web') {
2465: $currentstring .= '';
2466: }
2467: return $currentstring;
2468: }
2469:
2470: #-- <externallink>
2471: sub start_externallink {
2472: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2473: my $currentstring = '';
2474: if ($target eq 'web') {
2475: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2476: $currentstring .= '<b>'.$display.'</b>';;
2477: }
2478: return $currentstring;
2479: }
2480:
2481: sub end_externallink {
2482: my ($target,$token) = @_;
2483: my $currentstring = '';
2484: if ($target eq 'web') {
2485: $currentstring .= '';
2486: }
2487: return $currentstring;
2488: }
2489:
2490: #-- <blankspace heigth="">
2491: sub start_blankspace {
2492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2493: my $currentstring = '';
2494: if ($target eq 'tex') {
2495: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2496: $currentstring .= '\vskip '.$howmuch.' ';
2497: }
2498: return $currentstring;
2499: }
2500:
2501: sub end_blankspace {
2502: my ($target,$token) = @_;
2503: my $currentstring = '';
2504: if ($target eq 'tex') {
2505: $currentstring .= '';
2506: }
2507: return $currentstring;
2508: }
2509:
2510: #-- <abbr> tag (end tag required)
2511: sub start_abbr {
2512: my ($target,$token) = @_;
2513: my $currentstring = '';
2514: if ($target eq 'web') {
2515: $currentstring = $token->[4];
2516: }
2517: return $currentstring;
2518: }
2519:
2520: sub end_abbr {
2521: my ($target,$token) = @_;
2522: my $currentstring = '';
2523: if ($target eq 'web') {
2524: $currentstring = $token->[2];
2525: }
2526: return $currentstring;
2527: }
2528:
2529: #-- <acronym> tag (end tag required)
2530: sub start_acronym {
2531: my ($target,$token) = @_;
2532: my $currentstring = '';
2533: if ($target eq 'web') {
2534: $currentstring = $token->[4];
2535: }
2536: return $currentstring;
2537: }
2538:
2539: sub end_acronym {
2540: my ($target,$token) = @_;
2541: my $currentstring = '';
2542: if ($target eq 'web') {
2543: $currentstring = $token->[2];
2544: }
2545: return $currentstring;
2546: }
2547:
2548: #-- <area> tag (end tag forbidden)
2549: sub start_area {
2550: my ($target,$token) = @_;
2551: my $currentstring = '';
2552: if ($target eq 'web') {
2553: $currentstring = $token->[4];
2554: }
2555: return $currentstring;
2556: }
2557:
2558: sub end_area {
2559: my ($target,$token) = @_;
2560: my $currentstring = '';
2561: if ($target eq 'web') {
2562: $currentstring = $token->[2];
2563: }
2564: return $currentstring;
2565: }
2566:
2567: #-- <base> tag (end tag forbidden)
2568: sub start_base {
2569: my ($target,$token) = @_;
2570: my $currentstring = '';
2571: if ($target eq 'web') {
2572: $currentstring = $token->[4];
2573: }
2574: return $currentstring;
2575: }
2576:
2577: sub end_base {
2578: my ($target,$token) = @_;
2579: my $currentstring = '';
2580: if ($target eq 'web') {
2581: $currentstring = $token->[2];
2582: }
2583: return $currentstring;
2584: }
2585:
2586: #-- <bdo> tag (end tag required)
2587: sub start_bdo {
2588: my ($target,$token) = @_;
2589: my $currentstring = '';
2590: if ($target eq 'web') {
2591: $currentstring = $token->[4];
2592: }
2593: return $currentstring;
2594: }
2595:
2596: sub end_bdo {
2597: my ($target,$token) = @_;
2598: my $currentstring = '';
2599: if ($target eq 'web') {
2600: $currentstring = $token->[2];
2601: }
2602: return $currentstring;
2603: }
2604:
2605: #-- <bgsound> tag (end tag optional)
2606: sub start_bgsound {
2607: my ($target,$token) = @_;
2608: my $currentstring = '';
2609: if ($target eq 'web') {
2610: $currentstring = $token->[4];
2611: }
2612: return $currentstring;
2613: }
2614:
2615: sub end_bgsound {
2616: my ($target,$token) = @_;
2617: my $currentstring = '';
2618: if ($target eq 'web') {
2619: $currentstring = $token->[2];
2620: }
2621: return $currentstring;
2622: }
2623:
2624: #-- <blink> tag (end tag required)
2625: sub start_blink {
2626: my ($target,$token) = @_;
2627: my $currentstring = '';
2628: if ($target eq 'web') {
2629: $currentstring = $token->[4];
2630: }
2631: return $currentstring;
2632: }
2633:
2634: sub end_blink {
2635: my ($target,$token) = @_;
2636: my $currentstring = '';
2637: if ($target eq 'web') {
2638: $currentstring = $token->[2];
2639: }
2640: return $currentstring;
2641: }
2642:
2643: #-- <blockquote> tag (end tag required)
2644: sub start_blockquote {
2645: my ($target,$token) = @_;
2646: my $currentstring = '';
2647: if ($target eq 'web') {
2648: $currentstring = $token->[4];
2649: }
2650: return $currentstring;
2651: }
2652:
2653: sub end_blockquote {
2654: my ($target,$token) = @_;
2655: my $currentstring = '';
2656: if ($target eq 'web') {
2657: $currentstring = $token->[2];
2658: }
2659: return $currentstring;
2660: }
2661:
2662: #-- <button> tag (end tag required)
2663: sub start_button {
2664: my ($target,$token) = @_;
2665: my $currentstring = '';
2666: if ($target eq 'web') {
2667: $currentstring = $token->[4];
2668: }
2669: return $currentstring;
2670: }
2671:
2672: sub end_button {
2673: my ($target,$token) = @_;
2674: my $currentstring = '';
2675: if ($target eq 'web') {
2676: $currentstring = $token->[2];
2677: }
2678: return $currentstring;
2679: }
2680:
2681: #-- <caption> tag (end tag required)
2682: sub start_caption {
2683: my ($target,$token) = @_;
2684: my $currentstring = '';
2685: if ($target eq 'web') {
2686: $currentstring = $token->[4];
2687: }
2688: return $currentstring;
2689: }
2690:
2691: sub end_caption {
2692: my ($target,$token) = @_;
2693: my $currentstring = '';
2694: if ($target eq 'web') {
2695: $currentstring = $token->[2];
2696: }
2697: return $currentstring;
2698: }
2699:
2700: #-- <col> tag (end tag forbdden)
2701: sub start_col {
2702: my ($target,$token) = @_;
2703: my $currentstring = '';
2704: if ($target eq 'web') {
2705: $currentstring = $token->[4];
2706: }
2707: return $currentstring;
2708: }
2709:
2710: sub end_col {
2711: my ($target,$token) = @_;
2712: my $currentstring = '';
2713: if ($target eq 'web') {
2714: $currentstring = $token->[2];
2715: }
2716: return $currentstring;
2717: }
2718:
2719: #-- <colgroup> tag (end tag optional)
2720: sub start_colgroup {
2721: my ($target,$token) = @_;
2722: my $currentstring = '';
2723: if ($target eq 'web') {
2724: $currentstring = $token->[4];
2725: }
2726: return $currentstring;
2727: }
2728:
2729: sub end_colgroup {
2730: my ($target,$token) = @_;
2731: my $currentstring = '';
2732: if ($target eq 'web') {
2733: $currentstring = $token->[2];
2734: }
2735: return $currentstring;
2736: }
2737:
2738: #-- <del> tag (end tag required)
2739: sub start_del {
2740: my ($target,$token) = @_;
2741: my $currentstring = '';
2742: if ($target eq 'web') {
2743: $currentstring = $token->[4];
2744: }
2745: return $currentstring;
2746: }
2747:
2748: sub end_del {
2749: my ($target,$token) = @_;
2750: my $currentstring = '';
2751: if ($target eq 'web') {
2752: $currentstring = $token->[2];
2753: }
2754: return $currentstring;
2755: }
2756:
2757: #-- <fieldset> tag (end tag required)
2758: sub start_fieldset {
2759: my ($target,$token) = @_;
2760: my $currentstring = '';
2761: if ($target eq 'web') {
2762: $currentstring = $token->[4];
2763: }
2764: return $currentstring;
2765: }
2766:
2767: sub end_fieldset {
2768: my ($target,$token) = @_;
2769: my $currentstring = '';
2770: if ($target eq 'web') {
2771: $currentstring = $token->[2];
2772: }
2773: return $currentstring;
2774: }
2775:
2776: #-- <frame> tag (end tag forbidden)
2777: sub start_frame {
2778: my ($target,$token) = @_;
2779: my $currentstring = '';
2780: if ($target eq 'web') {
2781: $currentstring = $token->[4];
2782: }
2783: return $currentstring;
2784: }
2785:
2786: sub end_frame {
2787: my ($target,$token) = @_;
2788: my $currentstring = '';
2789: if ($target eq 'web') {
2790: $currentstring = $token->[2];
2791: }
2792: return $currentstring;
2793: }
2794:
2795: #-- <iframe> tag (end tag required)
2796: sub start_iframe {
2797: my ($target,$token) = @_;
2798: my $currentstring = '';
2799: if ($target eq 'web') {
2800: $currentstring = $token->[4];
2801: }
2802: return $currentstring;
2803: }
2804:
2805: sub end_iframe {
2806: my ($target,$token) = @_;
2807: my $currentstring = '';
2808: if ($target eq 'web') {
2809: $currentstring = $token->[2];
2810: }
2811: return $currentstring;
2812: }
2813:
2814: #-- <ins> tag (end tag required)
2815: sub start_ins {
2816: my ($target,$token) = @_;
2817: my $currentstring = '';
2818: if ($target eq 'web') {
2819: $currentstring = $token->[4];
2820: }
2821: return $currentstring;
2822: }
2823:
2824: sub end_ins {
2825: my ($target,$token) = @_;
2826: my $currentstring = '';
2827: if ($target eq 'web') {
2828: $currentstring = $token->[2];
2829: }
2830: return $currentstring;
2831: }
2832:
2833: #-- <isindex> tag (end tag forbidden)
2834: sub start_isindex {
2835: my ($target,$token) = @_;
2836: my $currentstring = '';
2837: if ($target eq 'web') {
2838: $currentstring = $token->[4];
2839: }
2840: return $currentstring;
2841: }
2842:
2843: sub end_isindex {
2844: my ($target,$token) = @_;
2845: my $currentstring = '';
2846: if ($target eq 'web') {
2847: $currentstring = $token->[2];
2848: }
2849: return $currentstring;
2850: }
2851:
2852: #-- <keygen> tag (end tag forbidden)
2853: sub start_keygen {
2854: my ($target,$token) = @_;
2855: my $currentstring = '';
2856: if ($target eq 'web') {
2857: $currentstring = $token->[4];
2858: }
2859: return $currentstring;
2860: }
2861:
2862: sub end_keygen {
2863: my ($target,$token) = @_;
2864: my $currentstring = '';
2865: if ($target eq 'web') {
2866: $currentstring = $token->[2];
2867: }
2868: return $currentstring;
2869: }
2870:
2871: #-- <label> tag
2872: sub start_label {
2873: my ($target,$token) = @_;
2874: my $currentstring = '';
2875: if ($target eq 'web') {
2876: $currentstring = $token->[4];
2877: }
2878: return $currentstring;
2879: }
2880:
2881: sub end_label {
2882: my ($target,$token) = @_;
2883: my $currentstring = '';
2884: if ($target eq 'web') {
2885: $currentstring = $token->[2];
2886: }
2887: return $currentstring;
2888: }
2889:
2890: #-- <layer> tag (end tag required)
2891: sub start_layer {
2892: my ($target,$token) = @_;
2893: my $currentstring = '';
2894: if ($target eq 'web') {
2895: $currentstring = $token->[4];
2896: }
2897: return $currentstring;
2898: }
2899:
2900: sub end_layer {
2901: my ($target,$token) = @_;
2902: my $currentstring = '';
2903: if ($target eq 'web') {
2904: $currentstring = $token->[2];
2905: }
2906: return $currentstring;
2907: }
2908:
2909: #-- <legend> tag (end tag required)
2910: sub start_legend {
2911: my ($target,$token) = @_;
2912: my $currentstring = '';
2913: if ($target eq 'web') {
2914: $currentstring = $token->[4];
2915: }
2916: return $currentstring;
2917: }
2918:
2919: sub end_legend {
2920: my ($target,$token) = @_;
2921: my $currentstring = '';
2922: if ($target eq 'web') {
2923: $currentstring = $token->[2];
2924: }
2925: return $currentstring;
2926: }
2927:
2928: #-- <link> tag (end tag forbidden)
2929: sub start_link {
2930: my ($target,$token) = @_;
2931: my $currentstring = '';
2932: if ($target eq 'web') {
2933: $currentstring = $token->[4];
2934: }
2935: return $currentstring;
2936: }
2937:
2938: sub end_link {
2939: my ($target,$token) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web') {
2942: $currentstring = $token->[2];
2943: }
2944: return $currentstring;
2945: }
2946:
2947: #-- <marquee> tag (end tag optional)
2948: sub start_marquee {
2949: my ($target,$token) = @_;
2950: my $currentstring = '';
2951: if ($target eq 'web') {
2952: $currentstring = $token->[4];
2953: }
2954: return $currentstring;
2955: }
2956:
2957: sub end_marquee {
2958: my ($target,$token) = @_;
2959: my $currentstring = '';
2960: if ($target eq 'web') {
2961: $currentstring = $token->[2];
2962: }
2963: return $currentstring;
2964: }
2965:
2966: #-- <multicol> tag (end tag required)
2967: sub start_multicol {
2968: my ($target,$token) = @_;
2969: my $currentstring = '';
2970: if ($target eq 'web') {
2971: $currentstring = $token->[4];
2972: }
2973: return $currentstring;
2974: }
2975:
2976: sub end_multicol {
2977: my ($target,$token) = @_;
2978: my $currentstring = '';
2979: if ($target eq 'web') {
2980: $currentstring = $token->[2];
2981: }
2982: return $currentstring;
2983: }
2984:
2985: #-- <nobr> tag (end tag required)
2986: sub start_nobr {
2987: my ($target,$token) = @_;
2988: my $currentstring = '';
2989: if ($target eq 'web') {
2990: $currentstring = $token->[4];
2991: } elsif ($target eq 'tex') {
2992: $currentstring='\mbox{';
2993: }
2994: return $currentstring;
2995: }
2996:
2997: sub end_nobr {
2998: my ($target,$token) = @_;
2999: my $currentstring = '';
3000: if ($target eq 'web') {
3001: $currentstring = $token->[2];
3002: } elsif ($target eq 'tex') {
3003: $currentstring='}';
3004: }
3005: return $currentstring;
3006: }
3007:
3008: #-- <noembed> tag (end tag required)
3009: sub start_noembed {
3010: my ($target,$token) = @_;
3011: my $currentstring = '';
3012: if ($target eq 'web') {
3013: $currentstring = $token->[4];
3014: }
3015: return $currentstring;
3016: }
3017:
3018: sub end_noembed {
3019: my ($target,$token) = @_;
3020: my $currentstring = '';
3021: if ($target eq 'web') {
3022: $currentstring = $token->[2];
3023: }
3024: return $currentstring;
3025: }
3026:
3027: #-- <noframes> tag (end tag required)
3028: sub start_noframes {
3029: my ($target,$token) = @_;
3030: my $currentstring = '';
3031: if ($target eq 'web') {
3032: $currentstring = $token->[4];
3033: }
3034: return $currentstring;
3035: }
3036:
3037: sub end_noframes {
3038: my ($target,$token) = @_;
3039: my $currentstring = '';
3040: if ($target eq 'web') {
3041: $currentstring = $token->[2];
3042: }
3043: return $currentstring;
3044: }
3045:
3046: #-- <nolayer> tag (end tag required)
3047: sub start_nolayer {
3048: my ($target,$token) = @_;
3049: my $currentstring = '';
3050: if ($target eq 'web') {
3051: $currentstring = $token->[4];
3052: }
3053: return $currentstring;
3054: }
3055:
3056: sub end_nolayer {
3057: my ($target,$token) = @_;
3058: my $currentstring = '';
3059: if ($target eq 'web') {
3060: $currentstring = $token->[2];
3061: }
3062: return $currentstring;
3063: }
3064:
3065: #-- <noscript> tag (end tag required)
3066: sub start_noscript {
3067: my ($target,$token) = @_;
3068: my $currentstring = '';
3069: if ($target eq 'web') {
3070: $currentstring = $token->[4];
3071: }
3072: return $currentstring;
3073: }
3074:
3075: sub end_noscript {
3076: my ($target,$token) = @_;
3077: my $currentstring = '';
3078: if ($target eq 'web') {
3079: $currentstring = $token->[2];
3080: }
3081: return $currentstring;
3082: }
3083:
3084: #-- <object> tag (end tag required)
3085: sub start_object {
3086: my ($target,$token) = @_;
3087: my $currentstring = '';
3088: if ($target eq 'web') {
3089: $currentstring = $token->[4];
3090: }
3091: return $currentstring;
3092: }
3093:
3094: sub end_object {
3095: my ($target,$token) = @_;
3096: my $currentstring = '';
3097: if ($target eq 'web') {
3098: $currentstring = $token->[2];
3099: }
3100: return $currentstring;
3101: }
3102:
3103: #-- <optgroup> tag (end tag required)
3104: sub start_optgroup {
3105: my ($target,$token) = @_;
3106: my $currentstring = '';
3107: if ($target eq 'web') {
3108: $currentstring = $token->[4];
3109: }
3110: return $currentstring;
3111: }
3112:
3113: sub end_optgroup {
3114: my ($target,$token) = @_;
3115: my $currentstring = '';
3116: if ($target eq 'web') {
3117: $currentstring = $token->[2];
3118: }
3119: return $currentstring;
3120: }
3121:
3122: #-- <samp> tag (end tag required)
3123: sub start_samp {
3124: my ($target,$token) = @_;
3125: my $currentstring = '';
3126: if ($target eq 'web') {
3127: $currentstring = $token->[4];
3128: } elsif ($target eq 'tex') {
3129: $currentstring='\texttt{';
3130: }
3131: return $currentstring;
3132: }
3133:
3134: sub end_samp {
3135: my ($target,$token) = @_;
3136: my $currentstring = '';
3137: if ($target eq 'web') {
3138: $currentstring = $token->[2];
3139: } elsif ($target eq 'tex') {
3140: $currentstring='}';
3141: }
3142: return $currentstring;
3143: }
3144:
3145: #-- <server> tag
3146: sub start_server {
3147: my ($target,$token) = @_;
3148: my $currentstring = '';
3149: if ($target eq 'web') {
3150: $currentstring = $token->[4];
3151: }
3152: return $currentstring;
3153: }
3154:
3155: sub end_server {
3156: my ($target,$token) = @_;
3157: my $currentstring = '';
3158: if ($target eq 'web') {
3159: $currentstring = $token->[2];
3160: }
3161: return $currentstring;
3162: }
3163:
3164: #-- <spacer> tag (end tag forbidden)
3165: sub start_spacer {
3166: my ($target,$token) = @_;
3167: my $currentstring = '';
3168: if ($target eq 'web') {
3169: $currentstring = $token->[4];
3170: }
3171: return $currentstring;
3172: }
3173:
3174: sub end_spacer {
3175: my ($target,$token) = @_;
3176: my $currentstring = '';
3177: if ($target eq 'web') {
3178: $currentstring = $token->[2];
3179: }
3180: return $currentstring;
3181: }
3182:
3183: #-- <span> tag (end tag required)
3184: sub start_span {
3185: my ($target,$token) = @_;
3186: my $currentstring = '';
3187: if ($target eq 'web') {
3188: $currentstring = $token->[4];
3189: }
3190: return $currentstring;
3191: }
3192:
3193: sub end_span {
3194: my ($target,$token) = @_;
3195: my $currentstring = '';
3196: if ($target eq 'web') {
3197: $currentstring = $token->[2];
3198: }
3199: return $currentstring;
3200: }
3201:
3202: #-- <tbody> tag (end tag optional)
3203: sub start_tbody {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: $currentstring = $token->[4];
3208: }
3209: return $currentstring;
3210: }
3211:
3212: sub end_tbody {
3213: my ($target,$token) = @_;
3214: my $currentstring = '';
3215: if ($target eq 'web') {
3216: $currentstring = $token->[2];
3217: }
3218: return $currentstring;
3219: }
3220:
3221: #-- <tfoot> tag (end tag optional)
3222: sub start_tfoot {
3223: my ($target,$token) = @_;
3224: my $currentstring = '';
3225: if ($target eq 'web') {
3226: $currentstring = $token->[4];
3227: }
3228: return $currentstring;
3229: }
3230:
3231: sub end_tfoot {
3232: my ($target,$token) = @_;
3233: my $currentstring = '';
3234: if ($target eq 'web') {
3235: $currentstring = $token->[2];
3236: }
3237: return $currentstring;
3238: }
3239:
3240: #-- <thead> tag (end tag optional)
3241: sub start_thead {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web') {
3245: $currentstring = $token->[4];
3246: }
3247: return $currentstring;
3248: }
3249:
3250: sub end_thead {
3251: my ($target,$token) = @_;
3252: my $currentstring = '';
3253: if ($target eq 'web') {
3254: $currentstring = $token->[2];
3255: }
3256: return $currentstring;
3257: }
3258:
3259: #-- <var> tag
3260: sub start_var {
3261: my ($target,$token) = @_;
3262: my $currentstring = '';
3263: if ($target eq 'web') {
3264: $currentstring = $token->[4];
3265: } elsif ($target eq 'tex') {
3266: $currentstring = '\textit{';
3267: }
3268: return $currentstring;
3269: }
3270:
3271: sub end_var {
3272: my ($target,$token) = @_;
3273: my $currentstring = '';
3274: if ($target eq 'web') {
3275: $currentstring = $token->[2];
3276: } elsif ($target eq 'tex') {
3277: $currentstring = '}';
3278: }
3279: return $currentstring;
3280: }
3281:
3282: #-- <wbr> tag (end tag forbidden)
3283: sub start_wbr {
3284: my ($target,$token) = @_;
3285: my $currentstring = '';
3286: if ($target eq 'web') {
3287: $currentstring = $token->[4];
3288: }
3289: return $currentstring;
3290: }
3291:
3292: sub end_wbr {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web') {
3296: $currentstring = $token->[2];
3297: }
3298: return $currentstring;
3299: }
3300:
3301: #-- <hideweboutput> tag
3302: sub start_hideweboutput {
3303: my ($target,$token) = @_;
3304: if ($target eq 'web') {
3305: &Apache::lonxml::startredirection();
3306: }
3307: return '';
3308: }
3309:
3310: sub end_hideweboutput {
3311: my ($target,$token) = @_;
3312: my $currentstring = '';
3313: if ($target eq 'web') {
3314: $currentstring = &Apache::lonxml::endredirection();
3315: }
3316: return '';
3317: }
3318:
3319:
3320: sub image_replication {
3321: my $src = shift;
3322: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3323: #replicates eps or ps
3324: my $epssrc = my $pssrc = $src;
3325: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3326: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3327: if (not -e $epssrc && not -e $pssrc) {
3328: my $result=&Apache::lonnet::repcopy($epssrc);
3329: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3330: }
3331: return '';
3332: }
3333:
3334: sub image_size {
3335: my ($src,$scaling,$parstack,$safeeval)=@_;
3336: #size of image from gif/jpg/jpeg/png
3337: my $image = Image::Magick->new;
3338: my $current_figure = $image->Read($src);
3339: my $width_param = $image->Get('width') * $scaling;;
3340: my $height_param = $image->Get('height') * $scaling;;
3341: undef $image;
3342: #do we have any specified LaTeX size of the picture?
3343: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3344: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3345: #do we have any specified web size of the picture?
3346: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3347: undef,1);
3348: if ($TeXwidth ne '') {
3349: if ($TeXwidth=~/(\d+)\s*\%/) {
3350: $width_param = $1*$ENV{'form.textwidth'}/100;
3351: } else {
3352: $width_param = $TeXwidth;
3353: }
3354: } elsif ($TeXheight ne '') {
3355: $width_param = $TeXheight/$height_param*$width_param;
3356: } elsif ($width ne '') {
3357: $width_param = $width*$scaling;
3358: }
3359: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3360: return $width_param;
3361: }
3362:
3363: sub eps_generation {
3364: my ($src,$file,$width_param) = @_;
3365: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3366: my $temp_file = Apache::File->new('>>'.$filename);
3367: print $temp_file "$src\n";
3368: my $newsrc = $src;
3369: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3370: $newsrc=~s/\/home\/httpd\/html\/res//;
3371: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3372: $newsrc=~s/\/\.\//\//;
3373: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3374: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3375: }
3376:
3377: sub file_path {
3378: my $src=shift;
3379: my ($file,$path);
3380: if ($src =~ m!(.*)/([^/]*)$!) {
3381: $file = $2;
3382: $path = $1.'/';
3383: }
3384: return $file,$path;
3385: }
3386:
3387: sub recalc {
3388: my $argument = shift;
3389: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3390: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3391: my $value=$1;
3392: my $units=$2;
3393: if ($units eq 'cm') {
3394: $value*=10;
3395: } elsif ($units eq 'in') {
3396: $value*=25.4;
3397: } elsif ($units eq 'pc') {
3398: $value*=(25.4*12/72.27);
3399: } elsif ($units eq 'pt') {
3400: $value*=(25.4/72.27);
3401: }
3402: return $value.' mm';
3403: }
3404:
3405: sub LATEX_length {
3406: my $garbage=shift;
3407: $garbage=~s/^\s+(\S.*)/$1/;
3408: $garbage=~s/(.*\S)\s+$/$1/;
3409: $garbage=~s/(\s)+/$1/;
3410: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;
3411: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;
3412: $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
3413: $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;
3414: $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;
3415: $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;
3416: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/1/g;
3417: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/ /g;
3418: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3419: my $value=length($garbage);
3420: return $value;
3421: }
3422:
3423:
3424:
3425:
3426: 1;
3427: __END__
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