1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.212 2004/05/10 18:33:31 sakharuk 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: $inside ='\\documentstyle{article}'.$inside;
90: &Apache::lonxml::debug("M is starting with:$inside:");
91: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
92: if ($eval eq 'on') {
93: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
94: #&Apache::lonxml::debug("M is evaulated to:$inside:");
95: }
96: $currentstring = &Apache::lontexconvert::converted(\$inside);
97: if ($Apache::lontexconvert::errorstring) {
98: &Apache::lonxml::warning("tth error: ".
99: $Apache::lontexconvert::errorstring);
100: $Apache::lontexconvert::errorstring='';
101: }
102: #&Apache::lonxml::debug("M is ends with:$currentstring:");
103: $Apache::lonxml::post_evaluate=0;
104: } elsif ($target eq 'tex') {
105: $currentstring = $inside;
106: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
107: if ($eval eq 'on') {
108: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
109: }
110: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
111: $Apache::lonxml::post_evaluate=0;
112: }
113: return $currentstring;
114: }
115:
116: sub end_m {
117: my ($target,$token) = @_;
118: my $currentstring = '';
119: if ($target eq 'tex') {
120: $currentstring = "";
121: }
122: return $currentstring;
123: }
124:
125: sub start_tthoption {
126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
127: my $result;
128: if ($target eq 'web') {
129: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
130: $inside=~s/^\s*//;
131: if ($ENV{'browser.mathml'}) {
132: &tth::ttmoptions($inside);
133: } else {
134: &tth::tthoptions($inside);
135: }
136: }
137: return $result;
138: }
139:
140: sub end_tthoption {
141: my ($target,$token) = @_;
142: my $result;
143: return $result;
144: }
145:
146: #-- <html> tag (end tag optional)
147: sub start_html {
148: my ($target,$token) = @_;
149: my $currentstring = '';
150: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
151: &Apache::lontexconvert::init_tth();
152: if ($target eq 'web' || $target eq 'edit') {
153: $currentstring = &Apache::lonxml::xmlbegin().
154: &Apache::lonxml::fontsettings();
155: } elsif ($target eq 'tex') {
156: @Apache::londefdef::table = ();
157: $currentstring .= '\documentclass[letterpaper]{article}';
158: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
159: $currentstring .= '\newcommand{\keephidden}[1]{}
160: \renewcommand{\deg}{$^{\circ}$}
161: \usepackage{longtable}
162: \usepackage{textcomp}
163: \usepackage{makeidx}
164: \usepackage[dvips]{graphicx}
165: \usepackage{epsfig}\usepackage{calc}
166: \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}}
167: \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}}';
168: }
169: return $currentstring;
170: }
171:
172: sub end_html {
173: my ($target,$token) = @_;
174: my $currentstring = '';
175: if ($target eq 'web') {
176: $currentstring = &Apache::lonxml::xmlend();
177: }
178: return $currentstring;
179: }
180:
181: #-- <head> tag (end tag optional)
182: sub start_head {
183: my ($target,$token) = @_;
184: my $currentstring = '';
185: if ($target eq 'web') {
186: $currentstring = $token->[4];
187: }
188: return $currentstring;
189: }
190:
191: sub end_head {
192: my ($target,$token) = @_;
193: my $currentstring = '';
194: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
195: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
196: $token->[2];
197: }
198: return $currentstring;
199: }
200:
201: #-- <map> tag (end tag required)
202: sub start_map {
203: my ($target,$token) = @_;
204: my $currentstring = '';
205: if ($target eq 'web') {
206: $currentstring = $token->[4];
207: }
208: return $currentstring;
209: }
210:
211: sub end_map {
212: my ($target,$token) = @_;
213: my $currentstring = '';
214: if ($target eq 'web') {
215: $currentstring = $token->[2];
216: }
217: return $currentstring;
218: }
219:
220: #-- <select> tag (end tag required)
221: sub start_select {
222: my ($target,$token) = @_;
223: my $currentstring = '';
224: if ($target eq 'web') {
225: $currentstring = $token->[4];
226: } elsif ($target eq 'tex') {
227: $Apache::londefdef::select=0;
228: }
229: return $currentstring;
230: }
231:
232: sub end_select {
233: my ($target,$token) = @_;
234: my $currentstring = '';
235: if ($target eq 'web') {
236: $currentstring = $token->[2];
237: }
238: return $currentstring;
239: }
240:
241: #-- <option> tag (end tag optional)
242: sub start_option {
243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
244: my $currentstring = '';
245: if ($target eq 'web') {
246: $currentstring = $token->[4];
247: } elsif ($target eq 'tex') {
248: $Apache::londefdef::select++;
249: if ($Apache::londefdef::select == 1) {
250: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
251: } else {
252: $currentstring='\keephidden{';
253: }
254: }
255: return $currentstring;
256: }
257:
258: sub end_option {
259: my ($target,$token) = @_;
260: my $currentstring = '';
261: if ($target eq 'web') {
262: $currentstring = $token->[2];
263: } elsif ($target eq 'tex') {
264: $currentstring='}';
265: }
266: return $currentstring;
267: }
268:
269: #-- <input> tag (end tag forbidden)
270: sub start_input {
271: my ($target,$token) = @_;
272: my $currentstring = '';
273: if ($target eq 'web') {
274: $currentstring = $token->[4];
275: }
276: return $currentstring;
277: }
278:
279: sub end_input {
280: my ($target,$token) = @_;
281: my $currentstring = '';
282: if ($target eq 'web') {
283: $currentstring = $token->[2];
284: }
285: return $currentstring;
286: }
287:
288: #-- <textarea> tag (end tag required)
289: sub start_textarea {
290: my ($target,$token) = @_;
291: my $currentstring = '';
292: if ($target eq 'web') {
293: $currentstring = $token->[4];
294: }
295: return $currentstring;
296: }
297:
298: sub end_textarea {
299: my ($target,$token) = @_;
300: my $currentstring = '';
301: if ($target eq 'web') {
302: $currentstring = $token->[2];
303: }
304: return $currentstring;
305: }
306:
307: #-- <form> tag (end tag required)
308: sub start_form {
309: my ($target,$token) = @_;
310: my $currentstring = '';
311: if ($target eq 'web') {
312: $currentstring = $token->[4];
313: }
314: return $currentstring;
315: }
316:
317: sub end_form {
318: my ($target,$token) = @_;
319: my $currentstring = '';
320: if ($target eq 'web') {
321: $currentstring = $token->[2];
322: }
323: return $currentstring;
324: }
325:
326: #-- <title> tag (end tag required)
327: sub start_title {
328: my ($target,$token) = @_;
329: my $currentstring = '';
330: if ($target eq 'web') {
331: $currentstring = $token->[4];
332: } elsif ($target eq 'tex') {
333: $currentstring .= '\keephidden{Title of the document: '
334: }
335: if ($target eq 'meta') {
336: $currentstring='<title>';
337: &start_output($target);
338: }
339: return $currentstring;
340: }
341:
342: sub end_title {
343: my ($target,$token) = @_;
344: my $currentstring = '';
345: if ($target eq 'web') {
346: $currentstring = $token->[2];
347: } elsif ($target eq 'tex') {
348: $currentstring .= '}';
349: }
350: if ($target eq 'meta') {
351: &end_output($target);
352: $currentstring='</title>';
353: }
354: return $currentstring;
355: }
356:
357: #-- <meta> tag (end tag forbidden)
358: sub start_meta {
359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
360: my $currentstring = '';
361: if ($target eq 'web') {
362: my $args='';
363: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
364: if ($args eq '') {
365: &Apache::lonxml::get_all_text("/meta",$parser);
366: } else {
367: $currentstring = $token->[4];
368: }
369: } elsif ($target eq 'meta') {
370: unless (&Apache::lonxml::get_param
371: ('http-equiv',$parstack,$safeeval,undef,1)) {
372: my $name=$token->[2]->{'name'};
373: $name=~tr/A-Z/a-z/;
374: $name=~s/\s/\_/gs;
375: $name=~s/\W//gs;
376: if ($name) {
377: $currentstring='<'.$name;
378: my $display=&Apache::lonxml::get_param
379: ('display',$parstack,$safeeval,undef,1);
380: if ($display) {
381: $display=~s/\"/\'/g;
382: $currentstring.=' display="'.$display.'"';
383: }
384: $currentstring.='>'.
385: &Apache::lonxml::get_param
386: ('content',$parstack,$safeeval,undef,1).
387: '</'.$name.'>';
388: }
389: my $display=&Apache::lonxml::get_param
390: ('display',$parstack,$safeeval,undef,1);
391: if ($display) {
392: $display=&HTML::Entities::encode($display,'<>&"');
393: $currentstring.='<'.$name.'.display>'.$display.
394: '</'.$name.'.display>';
395: }
396: }
397: } elsif ($target eq 'tex') {
398: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
399: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
400: if ((not defined $content) && (not defined $name)) {
401: &Apache::lonxml::startredirection();
402: }
403: }
404: return $currentstring;
405: }
406:
407: sub end_meta {
408: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
409: my $currentstring = '';
410: if ($target eq 'web') {
411: my $args='';
412: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
413: if ($args ne '') {
414: $currentstring = $token->[4];
415: }
416: } elsif ($target eq 'tex') {
417: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
418: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
419: if ((not defined $content) && (not defined $name)) {
420: &Apache::lonxml::endredirection();
421: }
422: }
423: return $currentstring;
424: }
425:
426: # accessrule
427: sub start_accessrule {
428: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
429: my $currentstring = '';
430: my $eff=&Apache::lonxml::get_param
431: ('effect',$parstack,$safeeval,undef,1);
432: my $realm=&Apache::lonxml::get_param
433: ('realm',$parstack,$safeeval,undef,1);
434: my $role=&Apache::lonxml::get_param
435: ('role',$parstack,$safeeval,undef,1);
436: $realm=~s/\s+//g;
437: $realm=~s/\//\_/g;
438: $realm=~s/^\_//;
439: $realm=~s/\W/\;/g;
440: $role=~s/\s+//g;
441: $role=~s/\//\_/g;
442: $role=~s/\W/\;/g;
443: if ($target eq 'web') {
444: my $args='';
445: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
446: if ($args eq '') {
447: &Apache::lonxml::get_all_text("/accessrule",$parser);
448: } else {
449: $currentstring = $token->[4];
450: }
451: }
452: if ($target eq 'meta') {
453: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
454: }
455: return $currentstring;
456: }
457:
458: sub end_accessrule {
459: my ($target,$token,$tagstack,$parstack,$parser) = @_;
460: my $currentstring = '';
461: if ($target eq 'web') {
462: my $args='';
463: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
464: if ($args ne '') {
465: $currentstring = $token->[4];
466: }
467: }
468: return $currentstring;
469: }
470:
471: #-- <body> tag (end tag required)
472: sub start_body {
473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
474: my $currentstring = '';
475: if ($target eq 'web') {
476: if ($Apache::lonhomework::parsing_a_problem) {
477: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
478: return '';
479: }
480: if (!$Apache::lonxml::registered &&
481: $ENV{'request.state'} eq 'published') {
482: $currentstring.='<head>'.
483: &Apache::lonmenu::registerurl(undef,$target).'</head>';
484: }
485: # Accessibility
486: if ($ENV{'browser.imagesuppress'} eq 'on') {
487: delete($token->[2]->{'background'});
488: }
489: if ($ENV{'browser.fontenhance'} eq 'on') {
490: my $style='';
491: foreach my $key (keys(%{$token->[2]})) {
492: if ($key =~ /^style$/i) {
493: $style.=$token->[2]->{$key}.';';
494: delete($token->[2]->{$key});
495: }
496: }
497: $token->[2]->{'style'}=$style.'; font-size: x-large;';
498: }
499: if ($ENV{'browser.blackwhite'} eq 'on') {
500: delete($token->[2]->{'font'});
501: delete($token->[2]->{'link'});
502: delete($token->[2]->{'alink'});
503: delete($token->[2]->{'vlink'});
504: delete($token->[2]->{'bgcolor'});
505: delete($token->[2]->{'background'});
506: }
507: # Overload loads
508: my $onLoad='';
509: foreach my $key (keys(%{$token->[2]})) {
510: if ($key =~ /^onload$/i) {
511: $onLoad.=$token->[2]->{$key}.';';
512: delete($token->[2]->{$key});
513: }
514: }
515: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
516: my $onUnload='';
517: foreach my $key (keys(%{$token->[2]})) {
518: if ($key =~ /^onunload$/i) {
519: $onUnload.=$token->[2]->{$key}.';';
520: delete($token->[2]->{$key});
521: }
522: }
523: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
524: ';'.$onUnload;
525:
526: $currentstring .= '<'.$token->[1];
527: foreach (keys %{$token->[2]}) {
528: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
529: }
530: $currentstring.='>';
531: if ($ENV{'request.state'} ne 'published') {
532: $currentstring.=(<<EDITBUTTON);
533: <form method="post">
534: <input type="submit" name="editmode" accesskey="e" value="Edit" />
535: </form>
536: EDITBUTTON
537: } else {
538: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
539: }
540: $currentstring.=&Apache::lonxml::message_location();
541: } elsif ($target eq 'tex') {
542: $currentstring = '\begin{document}';
543: }
544: return $currentstring;
545: }
546:
547: sub end_body {
548: my ($target,$token) = @_;
549: my $currentstring = '';
550: if ($target eq 'web') {
551: $currentstring = $token->[2];
552: } elsif ($target eq 'tex') {
553: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
554: }
555: return $currentstring;
556: }
557:
558: #-- <center> tag (end tag required)
559: sub start_center {
560: my ($target,$token) = @_;
561: my $currentstring = '';
562: if ($target eq 'web') {
563: $currentstring = $token->[4];
564: } elsif ($target eq 'tex') {
565: $currentstring = '\begin{center}';
566: }
567: return $currentstring;
568: }
569:
570: sub end_center {
571: my ($target,$token) = @_;
572: my $currentstring = '';
573: if ($target eq 'web') {
574: $currentstring = $token->[2];
575: } elsif ($target eq 'tex') {
576: $currentstring = '\end{center}';
577: }
578: return $currentstring;
579: }
580:
581: #-- <b> tag (end tag required)
582: sub start_b {
583: my ($target,$token) = @_;
584: my $currentstring = '';
585: if ($target eq 'web') {
586: $currentstring = $token->[4];
587: } elsif ($target eq 'tex') {
588: $currentstring = '\textbf{';
589: }
590: return $currentstring;
591: }
592:
593: sub end_b {
594: my ($target,$token) = @_;
595: my $currentstring = '';
596: if ($target eq 'web') {
597: $currentstring = $token->[2];
598: } elsif ($target eq 'tex') {
599: $currentstring = '}';
600: }
601: return $currentstring;
602: }
603:
604: #-- <strong> tag (end tag required)
605: sub start_strong {
606: my ($target,$token) = @_;
607: my $currentstring = '';
608: if ($target eq 'web') {
609: $currentstring = $token->[4];
610: } elsif ($target eq 'tex') {
611: $currentstring = '\textbf{';
612: }
613: return $currentstring;
614: }
615:
616: sub end_strong {
617: my ($target,$token) = @_;
618: my $currentstring = '';
619: if ($target eq 'web') {
620: $currentstring = $token->[2];
621: } elsif ($target eq 'tex') {
622: $currentstring = '}';
623: }
624: return $currentstring;
625: }
626:
627: #-- <h1> tag (end tag required)
628: sub start_h1 {
629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
630: my $currentstring = '';
631: if ($target eq 'web') {
632: $currentstring .= $token->[4];
633: } elsif ($target eq 'tex') {
634: my $pre;
635: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
636: if ($align eq 'center') {
637: $pre='\begin{center}';
638: } elsif ($align eq 'left') {
639: $pre='\rlap{';
640: } elsif ($align eq 'right') {
641: $pre=' \hfill \llap{';
642: }
643: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
644: if (not defined $TeXsize) {$TeXsize="large";}
645: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
646: } elsif ($target eq 'meta') {
647: $currentstring='<subject>';
648: &start_output($target);
649: }
650: return $currentstring;
651: }
652:
653: sub end_h1 {
654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
655: my $currentstring = '';
656: if ($target eq 'web') {
657: $currentstring .= $token->[2];
658: } elsif ($target eq 'tex') {
659: my $post='\vskip 0 mm ';
660: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
661: if ($align eq 'center') {
662: $post='\end{center}';
663: } elsif ($align eq 'left') {
664: $post='} \hfill'.'\vskip 0 mm ';
665: } elsif ($align eq 'right') {
666: $post='}'.'\vskip 0 mm ';
667: }
668: $currentstring .= '}}'.$post;
669: } elsif ($target eq 'meta') {
670: &end_output($target);
671: $currentstring='</subject>';
672: }
673: return $currentstring;
674: }
675:
676: #-- <h2> tag
677: sub start_h2 {
678: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
679: my $currentstring = '';
680: if ($target eq 'web') {
681: $currentstring .= $token->[4];
682: } elsif ($target eq 'tex') {
683: my $pre;
684: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
685: if ($align eq 'center') {
686: $pre='\begin{center}';
687: } elsif ($align eq 'left') {
688: $pre='\rlap{';
689: } elsif ($align eq 'right') {
690: $pre=' \hfill \llap{';
691: }
692: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
693: if (not defined $TeXsize) {$TeXsize="large";}
694: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
695: }
696: return $currentstring;
697: }
698:
699: sub end_h2 {
700: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
701: my $currentstring = '';
702: if ($target eq 'web') {
703: $currentstring .= $token->[2];
704: } elsif ($target eq 'tex') {
705: my $post='\vskip 0 mm ';
706: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
707: if ($align eq 'center') {
708: $post='\end{center}';
709: } elsif ($align eq 'left') {
710: $post='} \hfill'.'\vskip 0 mm ';
711: } elsif ($align eq 'right') {
712: $post='}'.'\vskip 0 mm ';
713: }
714: $currentstring .= '}}'.$post;
715: }
716: return $currentstring;
717: }
718:
719: #-- <h3> tag
720: sub start_h3 {
721: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
722: my $currentstring = '';
723: if ($target eq 'web') {
724: $currentstring .= $token->[4];
725: } elsif ($target eq 'tex') {
726: my $pre;
727: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
728: if ($align eq 'center') {
729: $pre='\begin{center}';
730: } elsif ($align eq 'left') {
731: $pre='\rlap{';
732: } elsif ($align eq 'right') {
733: $pre=' \hfill \llap{';
734: }
735: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
736: if (not defined $TeXsize) {$TeXsize="large";}
737: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
738: }
739: return $currentstring;
740: }
741:
742: sub end_h3 {
743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
744: my $currentstring = '';
745: if ($target eq 'web') {
746: $currentstring .= $token->[2];
747: } elsif ($target eq 'tex') {
748: my $post='\vskip 0 mm ';
749: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
750: if ($align eq 'center') {
751: $post='\end{center}';
752: } elsif ($align eq 'left') {
753: $post='} \hfill'.'\vskip 0 mm ';
754: } elsif ($align eq 'right') {
755: $post='}'.'\vskip 0 mm ';
756: }
757: $currentstring .= '}}'.$post;
758: }
759: return $currentstring;
760: }
761:
762: #-- <h4> tag
763: sub start_h4 {
764: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
765: my $currentstring = '';
766: if ($target eq 'web') {
767: $currentstring .= $token->[4];
768: } elsif ($target eq 'tex') {
769: my $pre;
770: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
771: if ($align eq 'center') {
772: $pre='\begin{center}';
773: } elsif ($align eq 'left') {
774: $pre='\rlap{';
775: } elsif ($align eq 'right') {
776: $pre=' \hfill \llap{';
777: }
778: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
779: if (not defined $TeXsize) {$TeXsize="large";}
780: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
781: }
782: return $currentstring;
783: }
784:
785: sub end_h4 {
786: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
787: my $currentstring = '';
788: if ($target eq 'web') {
789: $currentstring .= $token->[2];
790: } elsif ($target eq 'tex') {
791: my $post='\vskip 0 mm ';
792: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
793: if ($align eq 'center') {
794: $post='\end{center}';
795: } elsif ($align eq 'left') {
796: $post='} \hfill'.'\vskip 0 mm ';
797: } elsif ($align eq 'right') {
798: $post='}'.'\vskip 0 mm ';
799: }
800: $currentstring .= '}}'.$post;
801: }
802: return $currentstring;
803: }
804:
805: #-- <h5> tag
806: sub start_h5 {
807: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
808: my $currentstring = '';
809: if ($target eq 'web') {
810: $currentstring .= $token->[4];
811: } elsif ($target eq 'tex') {
812: my $pre;
813: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
814: if ($align eq 'center') {
815: $pre='\begin{center}';
816: } elsif ($align eq 'left') {
817: $pre='\rlap{';
818: } elsif ($align eq 'right') {
819: $pre=' \hfill \llap{';
820: }
821: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
822: if (not defined $TeXsize) {$TeXsize="large";}
823: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
824: }
825: return $currentstring;
826: }
827:
828: sub end_h5 {
829: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
830: my $currentstring = '';
831: if ($target eq 'web') {
832: $currentstring .= $token->[2];
833: } elsif ($target eq 'tex') {
834: my $post='\vskip 0 mm ';
835: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
836: if ($align eq 'center') {
837: $post='\end{center}';
838: } elsif ($align eq 'left') {
839: $post='} \hfill'.'\vskip 0 mm ';
840: } elsif ($align eq 'right') {
841: $post='}'.'\vskip 0 mm ';
842: }
843: $currentstring .= '}}'.$post;
844: }
845: return $currentstring;
846: }
847:
848: #-- <h6> tag
849: sub start_h6 {
850: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
851: my $currentstring = '';
852: if ($target eq 'web') {
853: $currentstring .= $token->[4];
854: } elsif ($target eq 'tex') {
855: my $pre;
856: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
857: if ($align eq 'center') {
858: $pre='\begin{center}';
859: } elsif ($align eq 'left') {
860: $pre='\rlap{';
861: } elsif ($align eq 'right') {
862: $pre=' \hfill \llap{';
863: }
864: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
865: if (not defined $TeXsize) {$TeXsize="large";}
866: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
867: }
868: return $currentstring;
869: }
870:
871: sub end_h6 {
872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
873: my $currentstring = '';
874: if ($target eq 'web') {
875: $currentstring .= $token->[2];
876: } elsif ($target eq 'tex') {
877: my $post='\vskip 0 mm ';
878: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
879: if ($align eq 'center') {
880: $post='\end{center}';
881: } elsif ($align eq 'left') {
882: $post='} \hfill'.'\vskip 0 mm ';
883: } elsif ($align eq 'right') {
884: $post='}'.'\vskip 0 mm ';
885: }
886: $currentstring .= '}}'.$post;
887: }
888: return $currentstring;
889: }
890:
891: #--- <cite> tag (end tag required)
892: sub start_cite {
893: my ($target,$token) = @_;
894: my $currentstring = '';
895: if ($target eq 'web') {
896: $currentstring .= $token->[4];
897: } elsif ($target eq 'tex') {
898: $currentstring .= '\textit{';
899: }
900: return $currentstring;
901: }
902:
903: sub end_cite {
904: my ($target,$token) = @_;
905: my $currentstring = '';
906: if ($target eq 'web') {
907: $currentstring .= $token->[2];
908: } elsif ($target eq 'tex') {
909: $currentstring .= '}';
910: }
911: return $currentstring;
912: }
913:
914: #-- <i> tag (end tag required)
915: sub start_i {
916: my ($target,$token) = @_;
917: my $currentstring = '';
918: if ($target eq 'web') {
919: $currentstring .= $token->[4];
920: } elsif ($target eq 'tex') {
921: $currentstring .= '\textit{';
922: }
923: return $currentstring;
924: }
925:
926: sub end_i {
927: my ($target,$token) = @_;
928: my $currentstring = '';
929: if ($target eq 'web') {
930: $currentstring .= $token->[2];
931: } elsif ($target eq 'tex') {
932: $currentstring .= '}';
933: }
934: return $currentstring;
935: }
936:
937: #-- <address> tag (end tag required)
938: sub start_address {
939: my ($target,$token) = @_;
940: my $currentstring = '';
941: if ($target eq 'web') {
942: $currentstring .= $token->[4];
943: } elsif ($target eq 'tex') {
944: $currentstring .= '\textit{';
945: }
946: return $currentstring;
947: }
948:
949: sub end_address {
950: my ($target,$token) = @_;
951: my $currentstring = '';
952: if ($target eq 'web') {
953: $currentstring .= $token->[2];
954: } elsif ($target eq 'tex') {
955: $currentstring .= '}';
956: }
957: return $currentstring;
958: }
959:
960: #-- <dfn> tag (end tag required)
961: sub start_dfn {
962: my ($target,$token) = @_;
963: my $currentstring = '';
964: if ($target eq 'web') {
965: $currentstring .= $token->[4];
966: } elsif ($target eq 'tex') {
967: $currentstring .= '\textit{';
968: }
969: return $currentstring;
970: }
971:
972: sub end_dfn {
973: my ($target,$token) = @_;
974: my $currentstring = '';
975: if ($target eq 'web') {
976: $currentstring .= $token->[2];
977: } elsif ($target eq 'tex') {
978: $currentstring .= '}';
979: }
980: return $currentstring;
981: }
982:
983: #-- <tt> tag (end tag required)
984: sub start_tt {
985: my ($target,$token) = @_;
986: my $currentstring = '';
987: if ($target eq 'web') {
988: $currentstring .= $token->[4];
989: } elsif ($target eq 'tex') {
990: $currentstring .= '\texttt{';
991: }
992: return $currentstring;
993: }
994:
995: sub end_tt {
996: my ($target,$token) = @_;
997: my $currentstring = '';
998: if ($target eq 'web') {
999: $currentstring .= $token->[2];
1000: } elsif ($target eq 'tex') {
1001: $currentstring .= '}';
1002: }
1003: return $currentstring;
1004: }
1005:
1006: #-- <kbd> tag (end tag required)
1007: sub start_kbd {
1008: my ($target,$token) = @_;
1009: my $currentstring = '';
1010: if ($target eq 'web') {
1011: $currentstring .= $token->[4];
1012: } elsif ($target eq 'tex') {
1013: $currentstring .= '\texttt{';
1014: }
1015: return $currentstring;
1016: }
1017:
1018: sub end_kbd {
1019: my ($target,$token) = @_;
1020: my $currentstring = '';
1021: if ($target eq 'web') {
1022: $currentstring .= $token->[2];
1023: } elsif ($target eq 'tex') {
1024: $currentstring .= '}';
1025: }
1026: return $currentstring;
1027: }
1028:
1029: #-- <code> tag (end tag required)
1030: sub start_code {
1031: my ($target,$token) = @_;
1032: my $currentstring = '';
1033: if ($target eq 'web') {
1034: $currentstring .= $token->[4];
1035: } elsif ($target eq 'tex') {
1036: $currentstring .= '\texttt{';
1037: }
1038: return $currentstring;
1039: }
1040:
1041: sub end_code {
1042: my ($target,$token) = @_;
1043: my $currentstring = '';
1044: if ($target eq 'web') {
1045: $currentstring .= $token->[2];
1046: } elsif ($target eq 'tex') {
1047: $currentstring .= '}';
1048: }
1049: return $currentstring;
1050: }
1051:
1052: #-- <em> tag (end tag required)
1053: sub start_em {
1054: my ($target,$token) = @_;
1055: my $currentstring = '';
1056: if ($target eq 'web') {
1057: $currentstring .= $token->[4];
1058: } elsif ($target eq 'tex') {
1059: $currentstring .= '\emph{';
1060: }
1061: return $currentstring;
1062: }
1063:
1064: sub end_em {
1065: my ($target,$token) = @_;
1066: my $currentstring = '';
1067: if ($target eq 'web') {
1068: $currentstring .= $token->[2];
1069: } elsif ($target eq 'tex') {
1070: $currentstring .= '}';
1071: }
1072: return $currentstring;
1073: }
1074:
1075: #-- <q> tag (end tag required)
1076: sub start_q {
1077: my ($target,$token) = @_;
1078: my $currentstring = '';
1079: if ($target eq 'web') {
1080: $currentstring .= $token->[4];
1081: } elsif ($target eq 'tex') {
1082: $currentstring .= '\emph{';
1083: }
1084: return $currentstring;
1085: }
1086:
1087: sub end_q {
1088: my ($target,$token) = @_;
1089: my $currentstring = '';
1090: if ($target eq 'web') {
1091: $currentstring .= $token->[2];
1092: } elsif ($target eq 'tex') {
1093: $currentstring .= '}';
1094: }
1095: return $currentstring;
1096: }
1097:
1098: #-- <p> tag (end tag optional)
1099: #optional attribute - align="center|left|right"
1100: sub start_p {
1101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1102: my $currentstring = '';
1103: if ($target eq 'web') {
1104: $currentstring .= $token->[4];
1105: } elsif ($target eq 'tex') {
1106: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1107: if ($align eq 'center') {
1108: $currentstring='\begin{center}\par';
1109: } elsif ($align eq 'right') {
1110: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1111: } elsif ($align eq 'left') {
1112: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1113: }
1114: my $signal=1;#<p> does not work inside <b>...</b>
1115: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1116: if (!$signal) {$currentstring = '';}
1117: }
1118: }
1119: return $currentstring;
1120: }
1121:
1122: sub end_p {
1123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1124: my $currentstring = '';
1125: if ($target eq 'web') {
1126: $currentstring .= $token->[2];
1127: } elsif ($target eq 'tex') {
1128: if ($$tagstack[-1] eq 'p') {
1129: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1130: if ($align eq 'center') {
1131: $currentstring .= '\end{center}';
1132: } elsif ($align eq 'right') {
1133: $currentstring .= '}}';
1134: } elsif ($align eq 'left') {
1135: $currentstring .= '}\hfill}';
1136: }
1137: }
1138: }
1139: return $currentstring;
1140: }
1141:
1142: #-- <br> tag (end tag forbidden)
1143: sub start_br {
1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1145: my $currentstring = '';
1146: if ($target eq 'web') {
1147: $currentstring .= $token->[4];
1148: } elsif ($target eq 'tex') {
1149: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1150: $currentstring .= '\vskip 0.2 mm ';
1151: }
1152: }
1153: return $currentstring;
1154: }
1155:
1156: sub end_br {
1157: my ($target,$token) = @_;
1158: my $currentstring = '';
1159: if ($target eq 'web') {
1160: $currentstring .= $token->[2];
1161: }
1162: return $currentstring;
1163: }
1164:
1165: #-- <big> tag (end tag required)
1166: sub start_big {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web') {
1170: $currentstring .= $token->[4];
1171: } elsif ($target eq 'tex') {
1172: $currentstring .= '{\large ';
1173: }
1174: return $currentstring;
1175: }
1176:
1177: sub end_big {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web') {
1181: $currentstring .= $token->[2];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '}';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: #-- <small> tag (end tag required)
1189: sub start_small {
1190: my ($target,$token) = @_;
1191: my $currentstring = '';
1192: if ($target eq 'web') {
1193: $currentstring .= $token->[4];
1194: } elsif ($target eq 'tex') {
1195: $currentstring .= '{\footnotesize ';
1196: }
1197: return $currentstring;
1198: }
1199:
1200: sub end_small {
1201: my ($target,$token) = @_;
1202: my $currentstring = '';
1203: if ($target eq 'web') {
1204: $currentstring .= $token->[2];
1205: } elsif ($target eq 'tex') {
1206: $currentstring .= '}';
1207: }
1208: return $currentstring;
1209: }
1210:
1211: #-- <basefont> tag (end tag forbidden)
1212: sub start_basefont {
1213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1214: my $currentstring = '';
1215: if ($target eq 'web') {
1216: $currentstring = $token->[4];
1217: } elsif ($target eq 'tex') {
1218: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1219: if (defined $basesize) {
1220: $currentstring = '{\\'.$basesize.' ';
1221: }
1222: }
1223: return $currentstring;
1224: }
1225:
1226: sub end_basefont {
1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1228: my $currentstring = '';
1229: if ($target eq 'web') {
1230: $currentstring = $token->[4];
1231: } elsif ($target eq 'tex') {
1232: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1233: if (defined $basesize) {
1234: $currentstring = '}';
1235: }
1236: }
1237: return $currentstring;
1238: }
1239:
1240: #-- <font> tag (end tag required)
1241: sub start_font {
1242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1243: my $currentstring = '';
1244: if ($target eq 'web') {
1245: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1246: if ($face!~/symbol/i) {
1247: if (($ENV{'browser.fontenhance'} eq 'on') ||
1248: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1249: }
1250: $currentstring = $token->[4];
1251: } elsif ($target eq 'tex') {
1252: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1253: if (defined $fontsize) {
1254: $currentstring = '{\\'.$fontsize.' ';
1255: }
1256: }
1257: return $currentstring;
1258: }
1259:
1260: sub end_font {
1261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1262: my $currentstring = '';
1263: if ($target eq 'web') {
1264: $currentstring = $token->[2];
1265: } elsif ($target eq 'tex') {
1266: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1267: if (defined $fontsize) {
1268: $currentstring = '}';
1269: }
1270: }
1271: return $currentstring;
1272: }
1273:
1274: #-- <strike> tag (end tag required)
1275: sub start_strike {
1276: my ($target,$token) = @_;
1277: my $currentstring = '';
1278: if ($target eq 'web') {
1279: $currentstring .= $token->[4];
1280: } elsif ($target eq 'tex') {
1281: &Apache::lonxml::startredirection();
1282: }
1283: return $currentstring;
1284: }
1285:
1286: sub end_strike {
1287: my ($target,$token) = @_;
1288: my $currentstring = '';
1289: if ($target eq 'web') {
1290: $currentstring .= $token->[2];
1291: } elsif ($target eq 'tex') {
1292: $currentstring=&Apache::lonxml::endredirection();
1293: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1294: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1295: $currentstring=~s/(\S)\s*$/$1\}/;
1296: }
1297: return $currentstring;
1298: }
1299:
1300: #-- <s> tag (end tag required)
1301: sub start_s {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web') {
1305: $currentstring .= $token->[4];
1306: } elsif ($target eq 'tex') {
1307: &Apache::lonxml::startredirection();
1308: }
1309: return $currentstring;
1310: }
1311:
1312: sub end_s {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web') {
1316: $currentstring .= $token->[2];
1317: } elsif ($target eq 'tex') {
1318: $currentstring=&Apache::lonxml::endredirection();
1319: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1320: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1321: $currentstring=~s/(\S)\s*$/$1\}/;
1322: }
1323: return $currentstring;
1324: }
1325:
1326: #-- <sub> tag (end tag required)
1327: sub start_sub {
1328: my ($target,$token) = @_;
1329: my $currentstring = '';
1330: if ($target eq 'web') {
1331: $currentstring .= $token->[4];
1332: } elsif ($target eq 'tex') {
1333: $currentstring .= '\ensuremath{_{';
1334: }
1335: return $currentstring;
1336: }
1337:
1338: sub end_sub {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web') {
1342: $currentstring .= $token->[2];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= '}}';
1345: }
1346: return $currentstring;
1347: }
1348:
1349: #-- <sup> tag (end tag required)
1350: sub start_sup {
1351: my ($target,$token) = @_;
1352: my $currentstring = '';
1353: if ($target eq 'web') {
1354: $currentstring .= $token->[4];
1355: } elsif ($target eq 'tex') {
1356: $currentstring .= '\ensuremath{^{';
1357: }
1358: return $currentstring;
1359: }
1360:
1361: sub end_sup {
1362: my ($target,$token) = @_;
1363: my $currentstring = '';
1364: if ($target eq 'web') {
1365: $currentstring .= $token->[2];
1366: } elsif ($target eq 'tex') {
1367: $currentstring .= '}}';
1368: }
1369: return $currentstring;
1370: }
1371:
1372: #-- <hr> tag (end tag forbidden)
1373: sub start_hr {
1374: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1375: my $currentstring = '';
1376: if ($target eq 'web') {
1377: $currentstring .= $token->[4];
1378: } elsif ($target eq 'tex') {
1379: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1380: if (defined $LaTeXwidth) {
1381: if ($LaTeXwidth=~/^%/) {
1382: substr($LaTeXwidth,0,1)='';
1383: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1384: }
1385: } else {
1386: $LaTeXwidth ='0.9\textwidth';
1387: }
1388: my ($pre,$post);
1389: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1390: if (($align eq 'center') || (not defined $align)) {
1391: $pre=''; $post='';
1392: } elsif ($align eq 'left') {
1393: $pre='\rlap{'; $post='} \hfill';
1394: } elsif ($align eq 'right') {
1395: $pre=' \hfill \llap{'; $post='}';
1396: }
1397: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1398: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1399: }
1400: return $currentstring;
1401: }
1402:
1403: sub end_hr {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web') {
1407: $currentstring .= $token->[2];
1408: }
1409: return $currentstring;
1410: }
1411:
1412: #-- <div> tag (end tag required)
1413: sub start_div {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web') {
1417: $currentstring .= $token->[4];
1418: }
1419: return $currentstring;
1420: }
1421:
1422: sub end_div {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web') {
1426: $currentstring .= $token->[2];
1427: }
1428: return $currentstring;
1429: }
1430:
1431: #-- <a> tag (end tag required)
1432: sub start_a {
1433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1434: my $currentstring = '';
1435: if ($target eq 'web') {
1436: $currentstring .= $token->[4];
1437: } elsif ($target eq 'tex') {
1438: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1439: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1440: if ($a=~/\S/) {
1441: $a=~s/([^\\])%/$1\\\%/g;
1442: $currentstring .= '\ref{URI: '.$a.'}';
1443: } elsif ($b=~/\S/) {
1444: $currentstring .= '\ref{Anchor: '.$b.'}';
1445: } else {
1446: $currentstring.='';
1447: }
1448: }
1449: return $currentstring;
1450: }
1451:
1452: sub end_a {
1453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web') {
1456: $currentstring .= $token->[2];
1457: }
1458: return $currentstring;
1459: }
1460:
1461: #-- <li> tag (end tag optional)
1462: sub start_li {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web') {
1466: $currentstring = $token->[4];
1467: } elsif ($target eq 'tex') {
1468: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1469: if ($type=~/circle/) {
1470: $currentstring .= ' \item[o] ';
1471: } elsif ($type=~/square/) {
1472: $currentstring .= ' \item[$\Box$] ';
1473: } elsif ($type ne '') {
1474: $currentstring .= ' \item['.$type.'] ';
1475: } else {
1476: $currentstring .= ' \item ';
1477: }
1478: }
1479: return $currentstring;
1480: }
1481:
1482: sub end_li {
1483: my ($target,$token) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web') {
1486: $currentstring = $token->[2];
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <u> tag (end tag required)
1492: sub start_u {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web') {
1496: $currentstring .= $token->[4];
1497: } elsif ($target eq 'tex') {
1498: &Apache::lonxml::startredirection();
1499: }
1500: return $currentstring;
1501: }
1502:
1503: sub end_u {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web') {
1507: $currentstring .= $token->[2];
1508: } elsif ($target eq 'tex') {
1509: $currentstring=&Apache::lonxml::endredirection();
1510: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1511: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1512: $currentstring=~s/(\S)\s*$/$1\}/;
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <ul> tag (end tag required)
1518: sub start_ul {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = '';
1521: if ($target eq 'web') {
1522: $currentstring = $token->[4];
1523: } elsif ($target eq 'tex') {
1524: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1525: if ($TeXtype eq 'disc') {
1526: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1527: \renewcommand{\labelitemii}{$\bullet$}
1528: \renewcommand{\labelitemiii}{$\bullet$}
1529: \renewcommand{\labelitemiv}{$\bullet$}';
1530: } elsif ($TeXtype eq 'circle') {
1531: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1532: \renewcommand{\labelitemii}{$\circ$}
1533: \renewcommand{\labelitemiii}{$\circ$}
1534: \renewcommand{\labelitemiv}{$\circ$}';
1535: } elsif ($TeXtype eq 'square') {
1536: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1537: \renewcommand{\labelitemii}{$\diamond$}
1538: \renewcommand{\labelitemiii}{$\diamond$}
1539: \renewcommand{\labelitemiv}{$\diamond$}';
1540: }
1541: $currentstring .= '\begin{itemize}';
1542: }
1543: return $currentstring;
1544: }
1545:
1546: sub end_ul {
1547: my ($target,$token) = @_;
1548: my $currentstring = '';
1549: if ($target eq 'web') {
1550: $currentstring = $token->[2];
1551: } elsif ($target eq 'tex') {
1552: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1553: \renewcommand{\labelitemii}{$\bullet$}
1554: \renewcommand{\labelitemiii}{$\bullet$}
1555: \renewcommand{\labelitemiv}{$\bullet$}';
1556: }
1557: return $currentstring;
1558: }
1559:
1560: #-- <menu> tag (end tag required)
1561: sub start_menu {
1562: my ($target,$token) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web') {
1565: $currentstring = $token->[4];
1566: } elsif ($target eq 'tex') {
1567: $currentstring = " \\begin{itemize} ";
1568: }
1569: return $currentstring;
1570: }
1571:
1572: sub end_menu {
1573: my ($target,$token) = @_;
1574: my $currentstring = '';
1575: if ($target eq 'web') {
1576: $currentstring = $token->[2];
1577: } elsif ($target eq 'tex') {
1578: $currentstring = " \\end{itemize}";
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <dir> tag (end tag required)
1584: sub start_dir {
1585: my ($target,$token) = @_;
1586: my $currentstring = '';
1587: if ($target eq 'web') {
1588: $currentstring = $token->[4];
1589: } elsif ($target eq 'tex') {
1590: $currentstring = " \\begin{itemize} ";
1591: }
1592: return $currentstring;
1593: }
1594:
1595: sub end_dir {
1596: my ($target,$token) = @_;
1597: my $currentstring = '';
1598: if ($target eq 'web') {
1599: $currentstring = $token->[2];
1600: } elsif ($target eq 'tex') {
1601: $currentstring = " \\end{itemize}";
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <ol> tag (end tag required)
1607: sub start_ol {
1608: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring = $token->[4];
1612: } elsif ($target eq 'tex') {
1613: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1614: if ($type eq '1') {
1615: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1616: \renewcommand{\labelenumii}{\arabic{enumii}.}
1617: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1618: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1619: } elsif ($type eq 'A') {
1620: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1621: \renewcommand{\labelenumii}{\Alph{enumii}.}
1622: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1623: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1624: } elsif ($type eq 'a') {
1625: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1626: \renewcommand{\labelenumii}{\alph{enumii}.}
1627: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1628: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1629: } elsif ($type eq 'i') {
1630: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1631: \renewcommand{\labelenumii}{\roman{enumii}.}
1632: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1633: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1634: } elsif ($type eq 'I') {
1635: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1636: \renewcommand{\labelenumii}{\Roman{enumii}.}
1637: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1638: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1639: }
1640: $currentstring .= '\begin{enumerate}';
1641: }
1642: return $currentstring;
1643: }
1644:
1645: sub end_ol {
1646: my ($target,$token) = @_;
1647: my $currentstring = '';
1648: if ($target eq 'web') {
1649: $currentstring = $token->[2];
1650: } elsif ($target eq 'tex') {
1651: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1652: \renewcommand{\labelenumii}{\arabic{enumii}.}
1653: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1654: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1655: }
1656: return $currentstring;
1657: }
1658:
1659: #-- <dl> tag (end tag required)
1660: sub start_dl {
1661: my ($target,$token) = @_;
1662: my $currentstring = '';
1663: if ($target eq 'web') {
1664: $currentstring = $token->[4];
1665: } elsif ($target eq 'tex') {
1666: $currentstring = '\begin{description}';
1667: @Apache::londefdef::description=();
1668: $Apache::londefdef::DD_redirection=0;
1669: $Apache::londefdef::DT_redirection=0;
1670: }
1671: return $currentstring;
1672: }
1673:
1674: sub end_dl {
1675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1676: my $currentstring = '';
1677: if ($target eq 'web') {
1678: $currentstring = $token->[2];
1679: } elsif ($target eq 'tex') {
1680: if ($Apache::londefdef::DT_redirection) {
1681: my $data=&item_cleanup;
1682: push @Apache::londefdef::description,'\item['.$data.']';
1683: $Apache::londefdef::DT_redirection=0;
1684: } elsif ($Apache::londefdef::DD_redirection) {
1685: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1686: }
1687: foreach my $element (@Apache::londefdef::description) {
1688: $currentstring.=' '.$element.' ';
1689: }
1690: @Apache::londefdef::description=();
1691: $currentstring.='\end{description}';
1692: }
1693: return $currentstring;
1694: }
1695:
1696: #-- <dt> tag (end tag optional)
1697: sub start_dt {
1698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1699: my $currentstring='';
1700: if ($target eq 'web') {
1701: $currentstring = $token->[4];
1702: } elsif ($target eq 'tex') {
1703: if ($Apache::londefdef::DT_redirection) {
1704: my $data=&item_cleanup;
1705: push @Apache::londefdef::description,'\item['.$data.']';
1706: $Apache::londefdef::DT_redirection=0;
1707: } elsif ($Apache::londefdef::DD_redirection) {
1708: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1709: $Apache::londefdef::DD_redirection=0;
1710: }
1711: &Apache::lonxml::startredirection();
1712: $Apache::londefdef::DT_redirection=1;
1713: }
1714: return $currentstring;
1715: }
1716:
1717: sub end_dt {
1718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web') {
1721: $currentstring = $token->[2];
1722: } elsif ($target eq 'tex') {
1723: my $data=&item_cleanup;
1724: push @Apache::londefdef::description,'\item['.$data.']';
1725: $Apache::londefdef::DT_redirection=0;
1726: }
1727: return $currentstring;
1728: }
1729:
1730: sub item_cleanup {
1731: my $item=&Apache::lonxml::endredirection();
1732: $item=~s/\\begin{center}//g;
1733: $item=~s/\\end{center}//g;
1734: return $item;
1735: }
1736:
1737: #-- <dd> tag (end tag optional)
1738: sub start_dd {
1739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1740: my $currentstring = '';
1741: if ($target eq 'web') {
1742: $currentstring = $token->[4];
1743: } elsif ($target eq 'tex') {
1744: if ($Apache::londefdef::DT_redirection) {
1745: my $data=&item_cleanup;
1746: push @Apache::londefdef::description,'\item['.$data.']';
1747: $Apache::londefdef::DT_redirection=0;
1748: }
1749: $Apache::londefdef::DD_redirection=1;
1750: &Apache::lonxml::startredirection();
1751: }
1752: return $currentstring;
1753: }
1754:
1755: sub end_dd {
1756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1757: my $currentstring = '';
1758: if ($target eq 'web') {
1759: $currentstring = $token->[2];
1760: } elsif ($target eq 'tex') {
1761: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1762: $Apache::londefdef::DD_redirection=0;
1763: }
1764: return $currentstring;
1765: }
1766:
1767: #-- <table> tag (end tag required)
1768: #list of supported attributes: border,width,TeXwidth
1769: sub start_table {
1770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1771: my ($textwidth,$currentstring)=('','');
1772: if ($target eq 'web') {
1773: $currentstring = $token->[4];
1774: } elsif ($target eq 'tex') {
1775: my $aa = {};
1776: push @Apache::londefdef::table, $aa;
1777: $Apache::londefdef::table[-1]{'row_number'} = -1;
1778: #table's width
1779: #default coincides with text line length
1780: if ($#Apache::londefdef::table==0) {
1781: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1782: $textwidth=~/(\d+\.?\d*)/;
1783: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1784: } else {
1785: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1786: #the maximum width of nested table is determined by LATeX width of parent cell
1787: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1788: } else {
1789: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1790: my $textwidth=$Apache::londefdef::table[-2]{'width'};
1791: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1792: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1793: }
1794: }
1795: }
1796: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1797: if (not defined $TeXwidth) {
1798: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1799: if ($htmlwidth=~/%/) {
1800: $Apache::londefdef::table[-1]{'percent'}=1;
1801: $htmlwidth=~/(\d+)/;
1802: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1803: } else {
1804: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1805: }
1806: } elsif ($TeXwidth=~/%/) {
1807: $Apache::londefdef::table[-1]{'percent'}=1;
1808: $TeXwidth=~/(\d+)/;
1809: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1810: } else {
1811: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1812: }
1813: #table's border
1814: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1815: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1816: unless (defined $border) { $border = 0; }
1817: if ($border) {
1818: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1819: $Apache::londefdef::table[-1]{'vinc'} = '&';
1820: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1821: } else {
1822: $Apache::londefdef::table[-1]{'hinc'} = '';
1823: $Apache::londefdef::table[-1]{'vinc'} = '&';
1824: $Apache::londefdef::table[-1]{'vvinc'} = '';
1825: }
1826: if ($#Apache::londefdef::table==0) {
1827: $Apache::londefdef::table[-1]{'output'}='\newline\setlength{\tabcolsep}{1 mm}';
1828: }
1829: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1830: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1831: $Apache::londefdef::table[-1]{'objectlen'}=[];
1832: $Apache::londefdef::table[-1]{'maxlen'}=[];
1833: $Apache::londefdef::table[-1]{'minlen'}=[];
1834: $Apache::londefdef::table[-1]{'content'}=[];
1835: $Apache::londefdef::table[-1]{'align'}=[];
1836: $currentstring='\keephidden{NEW TABLE ENTRY}';
1837: }
1838: return $currentstring;
1839: }
1840:
1841: sub end_table {
1842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1843: my $currentstring = '';
1844: if ($target eq 'web') {
1845: $currentstring = $token->[2];
1846: } elsif ($target eq 'tex') {
1847: my $inmemory = '';
1848: my $output = '';
1849: my $WARNING='';
1850: #width of columns from TeXwidth attributes
1851: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1852: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1853: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1854: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1855: }
1856: }
1857: }
1858: #free space and number of empty columns
1859: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1860: ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
1861: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1862: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1863: $empty_columns++;
1864: } else {
1865: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1866: }
1867: }
1868: #boundaries for contents columns
1869: my @min_len=();#columns can not be narrower
1870: my @max_len=();#maximum length of column
1871: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1872: my ($localmin,$localmax)=(0,0);
1873: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1874: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1875: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1876: }
1877: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1878: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1879: }
1880: }
1881: push @min_len, $localmin;
1882: push @max_len, $localmax;
1883: }
1884: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1885: my $localmin=0,;
1886: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1887: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1888: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1889: }
1890: }
1891: if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
1892: if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
1893: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1894: $min_len[$jn]=0;
1895: $max_len[$jn]=0;
1896: }
1897: }
1898: #final adjustment of column width
1899: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1900: my @adjust=();
1901: #step 1. adjustment by maximum value
1902: my $space_neeeded=0;
1903: for (my $jn=0;$jn<=$#max_len;$jn++) {
1904: $space_neeeded=$space_neeeded+$max_len[$jn];
1905: }
1906: if ($space_neeeded<=$available_space) {
1907: ## &Apache::lonnet::logthis("I am in position 1: $space_neeeded <= $available_space");
1908: for (my $jn=0;$jn<=$#max_len;$jn++) {
1909: if ($fwidth[$jn]==0) {
1910: $fwidth[$jn]=$max_len[$jn];
1911: }
1912: }
1913: } else {
1914: #step 2. adjustment by minimum value (estimation)
1915: $space_neeeded=0;
1916: for (my $jn=0;$jn<=$#min_len;$jn++) {
1917: $space_neeeded+=$min_len[$jn];
1918: }
1919: if ($space_neeeded>$available_space) {
1920: ## &Apache::lonnet::logthis("I am in position 2");
1921: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1922: for (my $jn=0;$jn<=$#max_len;$jn++) {
1923: if ($fwidth[$jn]==0) {
1924: $fwidth[$jn]=$min_len[$jn];
1925: }
1926: }
1927: } else {
1928: #step 3. adjustment over minimal + corrections
1929: ## &Apache::lonnet::logthis("I am in position 3");
1930: my $enlarge_coef=$available_space/$space_neeeded;
1931: my $acsessive=0;
1932: for (my $jn=0;$jn<=$#min_len;$jn++) {
1933: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1934: if ($adjust[$jn]>$max_len[$jn]) {
1935: $fwidth[$jn]=$max_len[$jn];
1936: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1937: $adjust[$jn]=0;
1938: }
1939: }
1940: if ($acsessive>0) {
1941: #we have an excess of space and can redistribute it
1942: my $notempty_columns=0;
1943: for (my $jn=0;$jn<=$#min_len;$jn++) {
1944: if ($adjust[$jn]!=0) {
1945: $notempty_columns++;
1946: }
1947: }
1948: my $per_column=$acsessive/$notempty_columns;
1949: for (my $jn=0;$jn<=$#min_len;$jn++) {
1950: if ($adjust[$jn]!=0) {
1951: $adjust[$jn]+=$per_column;
1952: $fwidth[$jn]=$adjust[$jn];
1953: }
1954: }
1955: }
1956: }
1957: }
1958: #recalculation for the use of all available width if width is defined in %
1959: if ($Apache::londefdef::table[-1]{'percent'}==1) {
1960: my $current=0;
1961: for (my $i=0;$i<=$#fwidth;$i++) {
1962: $current+=$fwidth[$i];
1963: }
1964: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1965: for (my $i=0;$i<=$#fwidth;$i++) {
1966: $fwidth[$i]*=$coef;
1967: }
1968: }
1969: #removing of empty columns if allowed
1970: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1971: if ($permission eq 'yes') {
1972: my @cleaned_table=();
1973: my @cleaned_header=();
1974: my $colind=0;
1975: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1976: if ($fwidth[$jn]!=0) {
1977: #we need to copy column
1978: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1979: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
1980: $cleaned_header[$colind]=$fwidth[$jn];
1981: }
1982: $colind++;
1983: }
1984: }
1985: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
1986: @fwidth=@cleaned_header;
1987: }
1988: #construct header of the table
1989: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1990: for (my $in=0;$in<=$#fwidth;$in++) {
1991: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
1992: }
1993: $header_of_table .= '}';
1994: #fill the table
1995: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1996: for (my $jn=0;$jn<=$#fwidth;$jn++) {
1997: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
1998: $output.='\begin{center}';
1999: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2000: $output.=' \hfill \llap{'
2001: }
2002: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2003: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2004: $output.='\end{center}';
2005: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2006: $output.='} ';
2007: }
2008: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2009: }
2010: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2011: }
2012: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\vskip 0 mm ';
2013: if ($#Apache::londefdef::table > 0) {
2014: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2015: pop @Apache::londefdef::table;
2016: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2017: } else {
2018: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2019: pop @Apache::londefdef::table;
2020: undef @Apache::londefdef::table;
2021: }
2022: }
2023: return $currentstring;
2024: }
2025:
2026: #-- <tr> tag (end tag optional)
2027: sub start_tr {
2028: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2029: my $currentstring = '';
2030: if ($target eq 'web') {
2031: $currentstring = $token->[4];
2032: } elsif ($target eq 'tex') {
2033: $Apache::londefdef::table[-1]{'row_number'}++;
2034: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2035: if ($alignchar ne '') {
2036: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2037: } else {
2038: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2039: }
2040: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2041: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2042: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2043: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2044: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2045: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2046: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2047: }
2048: return $currentstring;
2049: }
2050:
2051: sub end_tr {
2052: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2053: my $currentstring = '';
2054: if ($target eq 'web') {
2055: $currentstring = $token->[2];
2056: } elsif ($target eq 'tex') {
2057: if ($Apache::londefdef::TD_redirection) {
2058: &end_td_tex($parstack,$parser,$safeeval);
2059: }
2060: }
2061: return $currentstring;
2062: }
2063:
2064: #-- <td> tag (end tag optional)
2065: sub start_td {
2066: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2067: my $currentstring = '';
2068: if ($target eq 'web') {
2069: $currentstring = $token->[4];
2070: } elsif ($target eq 'tex') {
2071: $Apache::londefdef::TD_redirection = 1;
2072: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2073: }
2074: return $currentstring;
2075: }
2076:
2077: sub tag_check {
2078: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2079: my @ar=@$parstack;
2080: for (my $i=$#ar-1;$i>=0;$i--) {
2081: if (lc($$tagstack[$i]) eq $good_tag) {
2082: &start_td_tex($parstack,$parser,$safeeval);
2083: last;
2084: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2085: splice @ar, $i+1;
2086: &end_td_tex(\@ar,$parser,$safeeval);
2087: &start_td_tex($parstack,$parser,$safeeval);
2088: last;
2089: }
2090: }
2091: return '';
2092: }
2093:
2094: sub start_td_tex {
2095: my ($parstack,$parser,$safeeval) = @_;
2096: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2097: if ($alignchar eq '') {
2098: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2099: }
2100: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2101: $Apache::londefdef::table[-1]{'counter_columns'}++;
2102: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2103: if (defined $TeXwidth) {
2104: my $current_length=&recalc($TeXwidth);
2105: $current_length=~/(\d+\.?\d*)/;
2106: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2107: }
2108: &Apache::lonxml::startredirection();
2109: return '';
2110: }
2111:
2112: sub end_td_tex {
2113: my ($parstack,$parser,$safeeval) = @_;
2114: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2115: my $data=&Apache::lonxml::endredirection();
2116: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2117: if (defined $TeXwidth) {
2118: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2119: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2120: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2121: } else {
2122: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2123: my $garbage_data=$data;
2124: my $fwidth=0;
2125: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2126: my $current_length=&recalc($1);
2127: $current_length=~/(\d+\.?\d*)/;
2128: if ($fwidth<$1) {$fwidth=$1;}
2129: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2130: }
2131: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2132: my $current_length=$1;
2133: if ($fwidth<$current_length) {$fwidth=$current_length;}
2134: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2135: }
2136: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2137: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2138: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2139: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2140: } else {
2141: $data=~s/^\s+(\S.*)/$1/;
2142: $data=~s/(.*\S)\s+$/$1/;
2143: $data=~s/(\s)+/$1/;
2144: my ($current_length,$min_length)=(0,0);
2145: if ($data=~/\\vskip/) {
2146: my $newdata=$data;
2147: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2148: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2149: foreach my $elementdata (@newdata) {
2150: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2151: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2152: my @words=split(/ /,$elementdata);
2153: foreach my $word (@words) {
2154: my $lengthword=2.5*&LATEX_length($word);
2155: if ($min_length<$lengthword) {$min_length=$lengthword;}
2156: }
2157: }
2158: } else {
2159: $current_length=2.5*&LATEX_length($data);
2160: my @words=split(/ /,$data);
2161: foreach my $word (@words) {
2162: my $lengthword=2.5*&LATEX_length($word);
2163: if ($min_length<$lengthword) {$min_length=$lengthword;}
2164: }
2165: }
2166: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2167: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2168: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2169: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2170: }
2171: }
2172: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2173: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2174: }
2175: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2176: return'';
2177: }
2178:
2179: sub end_td {
2180: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2181: my $currentstring = '';
2182: if ($target eq 'web') {
2183: $currentstring = $token->[2];
2184: } elsif ($target eq 'tex') {
2185: $Apache::londefdef::TD_redirection =0;
2186: &end_td_tex($parstack,$parser,$safeeval);
2187: }
2188: return $currentstring;
2189: }
2190:
2191: #-- <th> tag (end tag optional)
2192: sub start_th {
2193: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2194: my $currentstring = '';
2195: if ($target eq 'web') {
2196: $currentstring = $token->[4];
2197: } elsif ($target eq 'tex') {
2198: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2199: if ($what_to_push eq '') {
2200: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2201: }
2202: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2203: $Apache::londefdef::table[-1]{'counter_columns'}++;
2204: &Apache::lonxml::startredirection();
2205: }
2206: return $currentstring;
2207: }
2208:
2209: sub end_th {
2210: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2211: my $currentstring = '';
2212: if ($target eq 'web') {
2213: $currentstring = $token->[2];
2214: } elsif ($target eq 'tex') {
2215: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2216: my $data=&Apache::lonxml::endredirection();
2217: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2218: if (defined $TeXwidth) {
2219: my $current_length=&recalc($TeXwidth);
2220: $current_length=~/(\d+)/;
2221: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2222: $Apache::londefdef::table[-1]{'length'} .= '0,';
2223: } else {
2224: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2225: my $current_length=&recalc($1);
2226: $current_length=~/(\d+)/;
2227: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2228: $Apache::londefdef::table[-1]{'length'} .= '0,';
2229: } else {
2230: $data=~/^\s*(\S.*)/;
2231: $data=$1;
2232: $data=~/(.*\S)\s*$/;
2233: $data=$1;
2234: my $current_length=2*length($data);
2235: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2236: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2237: }
2238: }
2239: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2240: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2241: }
2242: $data='\textbf{'.$data.'}';
2243: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2244: }
2245: return $currentstring;
2246: }
2247: #-- <img> tag (end tag forbidden)
2248: sub start_img {
2249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2250: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2251: undef,1);
2252: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2253: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2254: &Apache::lonnet::logthis("inside was $inside");
2255: return '';
2256: }
2257: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2258: my $currentstring = '';
2259: my $scaling = .3;
2260: if ($target eq 'web') {
2261: if ($ENV{'browser.imagesuppress'} ne 'on') {
2262: $currentstring.= $token->[4];
2263: } else {
2264: my $alttag= &Apache::lonxml::get_param
2265: ('alt',$parstack,$safeeval,undef,1);
2266: unless ($alttag) {
2267: $alttag=&Apache::lonmeta::alttag
2268: ($Apache::lonxml::pwd[-1],$src);
2269: }
2270: $currentstring.='[IMAGE: '.$alttag.']';
2271: }
2272: } elsif ($target eq 'tex') {
2273: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2274: #if original gif/jpg/png file exist do following:
2275: if (-e $src) {
2276: #what is the image size?
2277: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2278: my ($file,$path)=&file_path($src);
2279: my $newsrc = $src;
2280: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2281: $file=~s/\.(gif|jpg|png)$/.eps/i;
2282: #where can we find the picture?
2283: if (-e $newsrc) {
2284: #eps counterpart for image exist
2285: if ($path) {
2286: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2287: }
2288: } else {
2289: #there is no eps counterpart for image - check for ps one
2290: $newsrc =~ s/\.eps$/\.ps/;
2291: if (-e $newsrc) {
2292: #ps counterpart for image exist
2293: $file =~ s/\.eps$/\.ps/;
2294: if ($path) {
2295: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2296: }
2297: } else {
2298: #care about eps dynamical generation
2299: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2300: }
2301: }
2302: } else {
2303: #original image file doesn't exist so check the alt attribute
2304: my $alt =
2305: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2306: unless ($alt) {
2307: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2308: }
2309:
2310: if ($alt) {
2311: $currentstring .= ' '.$alt.' ';
2312: } else {
2313: #<allow> tag will care about replication
2314: }
2315: }
2316: } elsif ($target eq 'edit') {
2317: $currentstring .=&Apache::edit::tag_start($target,$token);
2318: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2319: &Apache::edit::browse('src',undef,'alt').' '.
2320: &Apache::edit::search('src',undef,'alt').'<br />';
2321: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2322: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2323: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2324: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2325: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2326: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2327: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2328: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2329: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2330: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2331: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2332: if ($width) { $currentstring.=' width="'.$width.'" '; }
2333: if ($height) { $currentstring.=' height="'.$height.'" '; }
2334: $currentstring .= ' />';
2335: } elsif ($target eq 'modified') {
2336: my ($osrc,$owidth,$oheight)=
2337: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2338: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2339: $safeeval,'src','alt',
2340: 'TeXwidth','TeXheight',
2341: 'width','height');
2342: my ($nsrc,$nwidth,$nheight)=
2343: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2344: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2345: &image_replication($loc);
2346: my ($iwidth,$iheight);
2347: if (-e $loc) {
2348: my $image = Image::Magick->new;
2349: $image->Read($loc);
2350: ($iwidth, $iheight) = ($image->Get('width'),
2351: $image->Get('height'));
2352: }
2353: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2354: # changed image or no size specified,
2355: # if they didn't explicitly change the
2356: # width or height use the ones from the image
2357: if ($iwidth && $iheight) {
2358: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2359: $token->[2]{'width'} = $iwidth;$ctag=1;
2360: }
2361: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2362: $token->[2]{'height'}=$iheight;$ctag=1;
2363: }
2364: }
2365: }
2366: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2367: # if we don't have a width or height
2368: if ($iwidth && $cwidth && !$cheight) {
2369: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2370: }
2371: if ($iheight && $cheight && !$cwidth) {
2372: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2373: }
2374: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2375: }
2376: return $currentstring;
2377: }
2378:
2379: sub end_img {
2380: my ($target,$token) = @_;
2381: my $currentstring = '';
2382: if ($target eq 'web') {
2383: $currentstring = $token->[2];
2384: } elsif ($target eq 'tex') {
2385: $currentstring = '';
2386: }
2387: return $currentstring;
2388: }
2389:
2390: #-- <applet> tag (end tag required)
2391: sub start_applet {
2392: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2393:
2394: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2395: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2396:
2397: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2398: undef,1);
2399: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2400:
2401: my $currentstring = '';
2402: if ($target eq 'web') {
2403: if ($ENV{'browser.appletsuppress'} ne 'on') {
2404: $currentstring = $token->[4];
2405: } else {
2406: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2407: $safeeval,undef,1);
2408: unless ($alttag) {
2409: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2410: $code);
2411: }
2412: $currentstring='[APPLET: '.$alttag.']';
2413: }
2414: } elsif ($target eq 'tex') {
2415: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2416: $safeeval,undef,1);
2417: unless ($alttag) {
2418: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2419: undef,1);
2420: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2421: $code);
2422: }
2423: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2424: '.}\end{center}';
2425: }
2426: return $currentstring;
2427: }
2428:
2429: sub end_applet {
2430: my ($target,$token) = @_;
2431: my $currentstring = '';
2432: if ($target eq 'web') {
2433: $currentstring = $token->[2];
2434: } elsif ($target eq 'tex') {
2435: }
2436: return $currentstring;
2437: }
2438:
2439: #-- <embed> tag (end tag optional/required)
2440: sub start_embed {
2441: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2442: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2443: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2444: my $currentstring = '';
2445: if ($target eq 'web') {
2446: if ($ENV{'browser.embedsuppress'} ne 'on') {
2447: $currentstring = $token->[4];
2448: } else {
2449: my $alttag=&Apache::lonxml::get_param
2450: ('alt',$parstack,$safeeval,undef,1);
2451: unless ($alttag) {
2452: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2453: }
2454: $currentstring='[EMBED: '.$alttag.']';
2455: }
2456: } elsif ($target eq 'tex') {
2457: }
2458: return $currentstring;
2459: }
2460:
2461: sub end_embed {
2462: my ($target,$token) = @_;
2463: my $currentstring = '';
2464: if ($target eq 'web') {
2465: $currentstring = $token->[2];
2466: } elsif ($target eq 'tex') {
2467: }
2468: return $currentstring;
2469: }
2470:
2471: #-- <param> tag (end tag forbidden)
2472: sub start_param {
2473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2474: if (&Apache::lonxml::get_param
2475: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2476: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2477: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2478: }
2479: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2480: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2481: my $currentstring = '';
2482: if ($target eq 'web') {
2483: $currentstring = $token->[4];
2484: } elsif ($target eq 'tex') {
2485: }
2486: return $currentstring;
2487: }
2488:
2489: sub end_param {
2490: my ($target,$token) = @_;
2491: my $currentstring = '';
2492: if ($target eq 'web') {
2493: $currentstring = $token->[2];
2494: } elsif ($target eq 'tex') {
2495: }
2496: return $currentstring;
2497: }
2498:
2499: #-- <allow> tag
2500: sub start_allow {
2501: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2502: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2503: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2504: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2505: &Apache::lonnet::clutter($src);
2506: &image_replication($src);
2507: my $result;
2508: if ($target eq 'edit') {
2509: $result .=&Apache::edit::tag_start($target,$token);
2510: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2511: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2512: } elsif ($target eq 'modified') {
2513: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2514: $safeeval,'src');
2515: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2516: }
2517: return $result;
2518: }
2519:
2520: sub end_allow {
2521: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2522: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2523: return '';
2524: }
2525:
2526: #-- Frames (end tag required)
2527: #-- <frameset>
2528: sub start_frameset {
2529: my ($target,$token) = @_;
2530: my $currentstring = '';
2531: if ($target eq 'web') {
2532: if (!$Apache::lonxml::registered &&
2533: $ENV{'request.state'} eq 'published') {
2534: $currentstring.='<head>'.
2535: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2536: }
2537: my $onLoad='';
2538: foreach my $key (keys(%{$token->[2]})) {
2539: if ($key =~ /^onload$/i) {
2540: $onLoad.=$token->[2]->{$key}.';';
2541: delete($token->[2]->{$key});
2542: }
2543: }
2544: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2545: my $onUnload='';
2546: foreach my $key (keys(%{$token->[2]})) {
2547: if ($key =~ /^onunload$/i) {
2548: $onUnload.=$token->[2]->{$key}.';';
2549: delete($token->[2]->{$key});
2550: }
2551: }
2552: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2553: ';'.$onUnload;
2554:
2555: $currentstring .= '<'.$token->[1];
2556: foreach (keys %{$token->[2]}) {
2557: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2558: }
2559: $currentstring.='>';
2560: }
2561: return $currentstring;
2562: }
2563:
2564: sub end_frameset {
2565: my ($target,$token) = @_;
2566: my $currentstring = '';
2567: if ($target eq 'web') {
2568: $currentstring = $token->[2];
2569: }
2570: return $currentstring;
2571: }
2572:
2573: #-- <xmp> (end tag required)
2574: sub start_xmp {
2575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2576: my $currentstring = '';
2577: if ($target eq 'web') {
2578: $currentstring .= $token->[4];
2579: } elsif ($target eq 'tex') {
2580: $currentstring .= '\begin{verbatim}';
2581: }
2582: return $currentstring;
2583: }
2584:
2585: sub end_xmp {
2586: my ($target,$token) = @_;
2587: my $currentstring = '';
2588: if ($target eq 'web') {
2589: $currentstring .= $token->[2];
2590: } elsif ($target eq 'tex') {
2591: $currentstring .= '\end{verbatim}';
2592: }
2593: return $currentstring;
2594: }
2595:
2596: #-- <pre> (end tag required)
2597: sub start_pre {
2598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2599: my $currentstring = '';
2600: if ($target eq 'web') {
2601: $currentstring .= $token->[4];
2602: } elsif ($target eq 'tex') {
2603: $currentstring .= '\begin{verbatim}';
2604: }
2605: return $currentstring;
2606: }
2607:
2608: sub end_pre {
2609: my ($target,$token) = @_;
2610: my $currentstring = '';
2611: if ($target eq 'web') {
2612: $currentstring .= $token->[2];
2613: } elsif ($target eq 'tex') {
2614: $currentstring .= '\end{verbatim}';
2615: }
2616: return $currentstring;
2617: }
2618:
2619: #-- <insert>
2620: sub start_insert {
2621: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2622: my $currentstring = '';
2623: if ($target eq 'web') {
2624: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2625: $currentstring .= '<b>'.$display.'</b>';;
2626: }
2627: return $currentstring;
2628: }
2629:
2630: sub end_insert {
2631: my ($target,$token) = @_;
2632: my $currentstring = '';
2633: if ($target eq 'web') {
2634: $currentstring .= '';
2635: }
2636: return $currentstring;
2637: }
2638:
2639: #-- <externallink>
2640: sub start_externallink {
2641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2642: my $currentstring = '';
2643: if ($target eq 'web') {
2644: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2645: $currentstring .= '<b>'.$display.'</b>';;
2646: }
2647: return $currentstring;
2648: }
2649:
2650: sub end_externallink {
2651: my ($target,$token) = @_;
2652: my $currentstring = '';
2653: if ($target eq 'web') {
2654: $currentstring .= '';
2655: }
2656: return $currentstring;
2657: }
2658:
2659: #-- <blankspace heigth="">
2660: sub start_blankspace {
2661: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2662: my $currentstring = '';
2663: if ($target eq 'tex') {
2664: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2665: $currentstring .= '\vskip '.$howmuch.' ';
2666: }
2667: return $currentstring;
2668: }
2669:
2670: sub end_blankspace {
2671: my ($target,$token) = @_;
2672: my $currentstring = '';
2673: if ($target eq 'tex') {
2674: $currentstring .= '';
2675: }
2676: return $currentstring;
2677: }
2678:
2679: #-- <abbr> tag (end tag required)
2680: sub start_abbr {
2681: my ($target,$token) = @_;
2682: my $currentstring = '';
2683: if ($target eq 'web') {
2684: $currentstring = $token->[4];
2685: }
2686: return $currentstring;
2687: }
2688:
2689: sub end_abbr {
2690: my ($target,$token) = @_;
2691: my $currentstring = '';
2692: if ($target eq 'web') {
2693: $currentstring = $token->[2];
2694: }
2695: return $currentstring;
2696: }
2697:
2698: #-- <acronym> tag (end tag required)
2699: sub start_acronym {
2700: my ($target,$token) = @_;
2701: my $currentstring = '';
2702: if ($target eq 'web') {
2703: $currentstring = $token->[4];
2704: }
2705: return $currentstring;
2706: }
2707:
2708: sub end_acronym {
2709: my ($target,$token) = @_;
2710: my $currentstring = '';
2711: if ($target eq 'web') {
2712: $currentstring = $token->[2];
2713: }
2714: return $currentstring;
2715: }
2716:
2717: #-- <area> tag (end tag forbidden)
2718: sub start_area {
2719: my ($target,$token) = @_;
2720: my $currentstring = '';
2721: if ($target eq 'web') {
2722: $currentstring = $token->[4];
2723: }
2724: return $currentstring;
2725: }
2726:
2727: sub end_area {
2728: my ($target,$token) = @_;
2729: my $currentstring = '';
2730: if ($target eq 'web') {
2731: $currentstring = $token->[2];
2732: }
2733: return $currentstring;
2734: }
2735:
2736: #-- <base> tag (end tag forbidden)
2737: sub start_base {
2738: my ($target,$token) = @_;
2739: my $currentstring = '';
2740: if ($target eq 'web') {
2741: $currentstring = $token->[4];
2742: }
2743: return $currentstring;
2744: }
2745:
2746: sub end_base {
2747: my ($target,$token) = @_;
2748: my $currentstring = '';
2749: if ($target eq 'web') {
2750: $currentstring = $token->[2];
2751: }
2752: return $currentstring;
2753: }
2754:
2755: #-- <bdo> tag (end tag required)
2756: sub start_bdo {
2757: my ($target,$token) = @_;
2758: my $currentstring = '';
2759: if ($target eq 'web') {
2760: $currentstring = $token->[4];
2761: }
2762: return $currentstring;
2763: }
2764:
2765: sub end_bdo {
2766: my ($target,$token) = @_;
2767: my $currentstring = '';
2768: if ($target eq 'web') {
2769: $currentstring = $token->[2];
2770: }
2771: return $currentstring;
2772: }
2773:
2774: #-- <bgsound> tag (end tag optional)
2775: sub start_bgsound {
2776: my ($target,$token) = @_;
2777: my $currentstring = '';
2778: if ($target eq 'web') {
2779: $currentstring = $token->[4];
2780: }
2781: return $currentstring;
2782: }
2783:
2784: sub end_bgsound {
2785: my ($target,$token) = @_;
2786: my $currentstring = '';
2787: if ($target eq 'web') {
2788: $currentstring = $token->[2];
2789: }
2790: return $currentstring;
2791: }
2792:
2793: #-- <blink> tag (end tag required)
2794: sub start_blink {
2795: my ($target,$token) = @_;
2796: my $currentstring = '';
2797: if ($target eq 'web') {
2798: $currentstring = $token->[4];
2799: }
2800: return $currentstring;
2801: }
2802:
2803: sub end_blink {
2804: my ($target,$token) = @_;
2805: my $currentstring = '';
2806: if ($target eq 'web') {
2807: $currentstring = $token->[2];
2808: }
2809: return $currentstring;
2810: }
2811:
2812: #-- <blockquote> tag (end tag required)
2813: sub start_blockquote {
2814: my ($target,$token) = @_;
2815: my $currentstring = '';
2816: if ($target eq 'web') {
2817: $currentstring = $token->[4];
2818: }
2819: return $currentstring;
2820: }
2821:
2822: sub end_blockquote {
2823: my ($target,$token) = @_;
2824: my $currentstring = '';
2825: if ($target eq 'web') {
2826: $currentstring = $token->[2];
2827: }
2828: return $currentstring;
2829: }
2830:
2831: #-- <button> tag (end tag required)
2832: sub start_button {
2833: my ($target,$token) = @_;
2834: my $currentstring = '';
2835: if ($target eq 'web') {
2836: $currentstring = $token->[4];
2837: }
2838: return $currentstring;
2839: }
2840:
2841: sub end_button {
2842: my ($target,$token) = @_;
2843: my $currentstring = '';
2844: if ($target eq 'web') {
2845: $currentstring = $token->[2];
2846: }
2847: return $currentstring;
2848: }
2849:
2850: #-- <caption> tag (end tag required)
2851: sub start_caption {
2852: my ($target,$token) = @_;
2853: my $currentstring = '';
2854: if ($target eq 'web') {
2855: $currentstring = $token->[4];
2856: }
2857: return $currentstring;
2858: }
2859:
2860: sub end_caption {
2861: my ($target,$token) = @_;
2862: my $currentstring = '';
2863: if ($target eq 'web') {
2864: $currentstring = $token->[2];
2865: }
2866: return $currentstring;
2867: }
2868:
2869: #-- <col> tag (end tag forbdden)
2870: sub start_col {
2871: my ($target,$token) = @_;
2872: my $currentstring = '';
2873: if ($target eq 'web') {
2874: $currentstring = $token->[4];
2875: }
2876: return $currentstring;
2877: }
2878:
2879: sub end_col {
2880: my ($target,$token) = @_;
2881: my $currentstring = '';
2882: if ($target eq 'web') {
2883: $currentstring = $token->[2];
2884: }
2885: return $currentstring;
2886: }
2887:
2888: #-- <colgroup> tag (end tag optional)
2889: sub start_colgroup {
2890: my ($target,$token) = @_;
2891: my $currentstring = '';
2892: if ($target eq 'web') {
2893: $currentstring = $token->[4];
2894: }
2895: return $currentstring;
2896: }
2897:
2898: sub end_colgroup {
2899: my ($target,$token) = @_;
2900: my $currentstring = '';
2901: if ($target eq 'web') {
2902: $currentstring = $token->[2];
2903: }
2904: return $currentstring;
2905: }
2906:
2907: #-- <del> tag (end tag required)
2908: sub start_del {
2909: my ($target,$token) = @_;
2910: my $currentstring = '';
2911: if ($target eq 'web') {
2912: $currentstring = $token->[4];
2913: }
2914: return $currentstring;
2915: }
2916:
2917: sub end_del {
2918: my ($target,$token) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: $currentstring = $token->[2];
2922: }
2923: return $currentstring;
2924: }
2925:
2926: #-- <fieldset> tag (end tag required)
2927: sub start_fieldset {
2928: my ($target,$token) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'web') {
2931: $currentstring = $token->[4];
2932: }
2933: return $currentstring;
2934: }
2935:
2936: sub end_fieldset {
2937: my ($target,$token) = @_;
2938: my $currentstring = '';
2939: if ($target eq 'web') {
2940: $currentstring = $token->[2];
2941: }
2942: return $currentstring;
2943: }
2944:
2945: #-- <frame> tag (end tag forbidden)
2946: sub start_frame {
2947: my ($target,$token) = @_;
2948: my $currentstring = '';
2949: if ($target eq 'web') {
2950: $currentstring = $token->[4];
2951: }
2952: return $currentstring;
2953: }
2954:
2955: sub end_frame {
2956: my ($target,$token) = @_;
2957: my $currentstring = '';
2958: if ($target eq 'web') {
2959: $currentstring = $token->[2];
2960: }
2961: return $currentstring;
2962: }
2963:
2964: #-- <iframe> tag (end tag required)
2965: sub start_iframe {
2966: my ($target,$token) = @_;
2967: my $currentstring = '';
2968: if ($target eq 'web') {
2969: $currentstring = $token->[4];
2970: }
2971: return $currentstring;
2972: }
2973:
2974: sub end_iframe {
2975: my ($target,$token) = @_;
2976: my $currentstring = '';
2977: if ($target eq 'web') {
2978: $currentstring = $token->[2];
2979: }
2980: return $currentstring;
2981: }
2982:
2983: #-- <ins> tag (end tag required)
2984: sub start_ins {
2985: my ($target,$token) = @_;
2986: my $currentstring = '';
2987: if ($target eq 'web') {
2988: $currentstring = $token->[4];
2989: }
2990: return $currentstring;
2991: }
2992:
2993: sub end_ins {
2994: my ($target,$token) = @_;
2995: my $currentstring = '';
2996: if ($target eq 'web') {
2997: $currentstring = $token->[2];
2998: }
2999: return $currentstring;
3000: }
3001:
3002: #-- <isindex> tag (end tag forbidden)
3003: sub start_isindex {
3004: my ($target,$token) = @_;
3005: my $currentstring = '';
3006: if ($target eq 'web') {
3007: $currentstring = $token->[4];
3008: }
3009: return $currentstring;
3010: }
3011:
3012: sub end_isindex {
3013: my ($target,$token) = @_;
3014: my $currentstring = '';
3015: if ($target eq 'web') {
3016: $currentstring = $token->[2];
3017: }
3018: return $currentstring;
3019: }
3020:
3021: #-- <keygen> tag (end tag forbidden)
3022: sub start_keygen {
3023: my ($target,$token) = @_;
3024: my $currentstring = '';
3025: if ($target eq 'web') {
3026: $currentstring = $token->[4];
3027: }
3028: return $currentstring;
3029: }
3030:
3031: sub end_keygen {
3032: my ($target,$token) = @_;
3033: my $currentstring = '';
3034: if ($target eq 'web') {
3035: $currentstring = $token->[2];
3036: }
3037: return $currentstring;
3038: }
3039:
3040: #-- <label> tag
3041: sub start_label {
3042: my ($target,$token) = @_;
3043: my $currentstring = '';
3044: if ($target eq 'web') {
3045: $currentstring = $token->[4];
3046: }
3047: return $currentstring;
3048: }
3049:
3050: sub end_label {
3051: my ($target,$token) = @_;
3052: my $currentstring = '';
3053: if ($target eq 'web') {
3054: $currentstring = $token->[2];
3055: }
3056: return $currentstring;
3057: }
3058:
3059: #-- <layer> tag (end tag required)
3060: sub start_layer {
3061: my ($target,$token) = @_;
3062: my $currentstring = '';
3063: if ($target eq 'web') {
3064: $currentstring = $token->[4];
3065: }
3066: return $currentstring;
3067: }
3068:
3069: sub end_layer {
3070: my ($target,$token) = @_;
3071: my $currentstring = '';
3072: if ($target eq 'web') {
3073: $currentstring = $token->[2];
3074: }
3075: return $currentstring;
3076: }
3077:
3078: #-- <legend> tag (end tag required)
3079: sub start_legend {
3080: my ($target,$token) = @_;
3081: my $currentstring = '';
3082: if ($target eq 'web') {
3083: $currentstring = $token->[4];
3084: }
3085: return $currentstring;
3086: }
3087:
3088: sub end_legend {
3089: my ($target,$token) = @_;
3090: my $currentstring = '';
3091: if ($target eq 'web') {
3092: $currentstring = $token->[2];
3093: }
3094: return $currentstring;
3095: }
3096:
3097: #-- <link> tag (end tag forbidden)
3098: sub start_link {
3099: my ($target,$token) = @_;
3100: my $currentstring = '';
3101: if ($target eq 'web') {
3102: $currentstring = $token->[4];
3103: }
3104: return $currentstring;
3105: }
3106:
3107: sub end_link {
3108: my ($target,$token) = @_;
3109: my $currentstring = '';
3110: if ($target eq 'web') {
3111: $currentstring = $token->[2];
3112: }
3113: return $currentstring;
3114: }
3115:
3116: #-- <marquee> tag (end tag optional)
3117: sub start_marquee {
3118: my ($target,$token) = @_;
3119: my $currentstring = '';
3120: if ($target eq 'web') {
3121: $currentstring = $token->[4];
3122: }
3123: return $currentstring;
3124: }
3125:
3126: sub end_marquee {
3127: my ($target,$token) = @_;
3128: my $currentstring = '';
3129: if ($target eq 'web') {
3130: $currentstring = $token->[2];
3131: }
3132: return $currentstring;
3133: }
3134:
3135: #-- <multicol> tag (end tag required)
3136: sub start_multicol {
3137: my ($target,$token) = @_;
3138: my $currentstring = '';
3139: if ($target eq 'web') {
3140: $currentstring = $token->[4];
3141: }
3142: return $currentstring;
3143: }
3144:
3145: sub end_multicol {
3146: my ($target,$token) = @_;
3147: my $currentstring = '';
3148: if ($target eq 'web') {
3149: $currentstring = $token->[2];
3150: }
3151: return $currentstring;
3152: }
3153:
3154: #-- <nobr> tag (end tag required)
3155: sub start_nobr {
3156: my ($target,$token) = @_;
3157: my $currentstring = '';
3158: if ($target eq 'web') {
3159: $currentstring = $token->[4];
3160: } elsif ($target eq 'tex') {
3161: $currentstring='\mbox{';
3162: }
3163: return $currentstring;
3164: }
3165:
3166: sub end_nobr {
3167: my ($target,$token) = @_;
3168: my $currentstring = '';
3169: if ($target eq 'web') {
3170: $currentstring = $token->[2];
3171: } elsif ($target eq 'tex') {
3172: $currentstring='}';
3173: }
3174: return $currentstring;
3175: }
3176:
3177: #-- <noembed> tag (end tag required)
3178: sub start_noembed {
3179: my ($target,$token) = @_;
3180: my $currentstring = '';
3181: if ($target eq 'web') {
3182: $currentstring = $token->[4];
3183: }
3184: return $currentstring;
3185: }
3186:
3187: sub end_noembed {
3188: my ($target,$token) = @_;
3189: my $currentstring = '';
3190: if ($target eq 'web') {
3191: $currentstring = $token->[2];
3192: }
3193: return $currentstring;
3194: }
3195:
3196: #-- <noframes> tag (end tag required)
3197: sub start_noframes {
3198: my ($target,$token) = @_;
3199: my $currentstring = '';
3200: if ($target eq 'web') {
3201: $currentstring = $token->[4];
3202: }
3203: return $currentstring;
3204: }
3205:
3206: sub end_noframes {
3207: my ($target,$token) = @_;
3208: my $currentstring = '';
3209: if ($target eq 'web') {
3210: $currentstring = $token->[2];
3211: }
3212: return $currentstring;
3213: }
3214:
3215: #-- <nolayer> tag (end tag required)
3216: sub start_nolayer {
3217: my ($target,$token) = @_;
3218: my $currentstring = '';
3219: if ($target eq 'web') {
3220: $currentstring = $token->[4];
3221: }
3222: return $currentstring;
3223: }
3224:
3225: sub end_nolayer {
3226: my ($target,$token) = @_;
3227: my $currentstring = '';
3228: if ($target eq 'web') {
3229: $currentstring = $token->[2];
3230: }
3231: return $currentstring;
3232: }
3233:
3234: #-- <noscript> tag (end tag required)
3235: sub start_noscript {
3236: my ($target,$token) = @_;
3237: my $currentstring = '';
3238: if ($target eq 'web') {
3239: $currentstring = $token->[4];
3240: }
3241: return $currentstring;
3242: }
3243:
3244: sub end_noscript {
3245: my ($target,$token) = @_;
3246: my $currentstring = '';
3247: if ($target eq 'web') {
3248: $currentstring = $token->[2];
3249: }
3250: return $currentstring;
3251: }
3252:
3253: #-- <object> tag (end tag required)
3254: sub start_object {
3255: my ($target,$token) = @_;
3256: my $currentstring = '';
3257: if ($target eq 'web') {
3258: $currentstring = $token->[4];
3259: }
3260: return $currentstring;
3261: }
3262:
3263: sub end_object {
3264: my ($target,$token) = @_;
3265: my $currentstring = '';
3266: if ($target eq 'web') {
3267: $currentstring = $token->[2];
3268: }
3269: return $currentstring;
3270: }
3271:
3272: #-- <optgroup> tag (end tag required)
3273: sub start_optgroup {
3274: my ($target,$token) = @_;
3275: my $currentstring = '';
3276: if ($target eq 'web') {
3277: $currentstring = $token->[4];
3278: }
3279: return $currentstring;
3280: }
3281:
3282: sub end_optgroup {
3283: my ($target,$token) = @_;
3284: my $currentstring = '';
3285: if ($target eq 'web') {
3286: $currentstring = $token->[2];
3287: }
3288: return $currentstring;
3289: }
3290:
3291: #-- <samp> tag (end tag required)
3292: sub start_samp {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web') {
3296: $currentstring = $token->[4];
3297: } elsif ($target eq 'tex') {
3298: $currentstring='\texttt{';
3299: }
3300: return $currentstring;
3301: }
3302:
3303: sub end_samp {
3304: my ($target,$token) = @_;
3305: my $currentstring = '';
3306: if ($target eq 'web') {
3307: $currentstring = $token->[2];
3308: } elsif ($target eq 'tex') {
3309: $currentstring='}';
3310: }
3311: return $currentstring;
3312: }
3313:
3314: #-- <server> tag
3315: sub start_server {
3316: my ($target,$token) = @_;
3317: my $currentstring = '';
3318: if ($target eq 'web') {
3319: $currentstring = $token->[4];
3320: }
3321: return $currentstring;
3322: }
3323:
3324: sub end_server {
3325: my ($target,$token) = @_;
3326: my $currentstring = '';
3327: if ($target eq 'web') {
3328: $currentstring = $token->[2];
3329: }
3330: return $currentstring;
3331: }
3332:
3333: #-- <spacer> tag (end tag forbidden)
3334: sub start_spacer {
3335: my ($target,$token) = @_;
3336: my $currentstring = '';
3337: if ($target eq 'web') {
3338: $currentstring = $token->[4];
3339: }
3340: return $currentstring;
3341: }
3342:
3343: sub end_spacer {
3344: my ($target,$token) = @_;
3345: my $currentstring = '';
3346: if ($target eq 'web') {
3347: $currentstring = $token->[2];
3348: }
3349: return $currentstring;
3350: }
3351:
3352: #-- <span> tag (end tag required)
3353: sub start_span {
3354: my ($target,$token) = @_;
3355: my $currentstring = '';
3356: if ($target eq 'web') {
3357: $currentstring = $token->[4];
3358: }
3359: return $currentstring;
3360: }
3361:
3362: sub end_span {
3363: my ($target,$token) = @_;
3364: my $currentstring = '';
3365: if ($target eq 'web') {
3366: $currentstring = $token->[2];
3367: }
3368: return $currentstring;
3369: }
3370:
3371: #-- <tbody> tag (end tag optional)
3372: sub start_tbody {
3373: my ($target,$token) = @_;
3374: my $currentstring = '';
3375: if ($target eq 'web') {
3376: $currentstring = $token->[4];
3377: }
3378: return $currentstring;
3379: }
3380:
3381: sub end_tbody {
3382: my ($target,$token) = @_;
3383: my $currentstring = '';
3384: if ($target eq 'web') {
3385: $currentstring = $token->[2];
3386: }
3387: return $currentstring;
3388: }
3389:
3390: #-- <tfoot> tag (end tag optional)
3391: sub start_tfoot {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web') {
3395: $currentstring = $token->[4];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: sub end_tfoot {
3401: my ($target,$token) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web') {
3404: $currentstring = $token->[2];
3405: }
3406: return $currentstring;
3407: }
3408:
3409: #-- <thead> tag (end tag optional)
3410: sub start_thead {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web') {
3414: $currentstring = $token->[4];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: sub end_thead {
3420: my ($target,$token) = @_;
3421: my $currentstring = '';
3422: if ($target eq 'web') {
3423: $currentstring = $token->[2];
3424: }
3425: return $currentstring;
3426: }
3427:
3428: #-- <var> tag
3429: sub start_var {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web') {
3433: $currentstring = $token->[4];
3434: } elsif ($target eq 'tex') {
3435: $currentstring = '\textit{';
3436: }
3437: return $currentstring;
3438: }
3439:
3440: sub end_var {
3441: my ($target,$token) = @_;
3442: my $currentstring = '';
3443: if ($target eq 'web') {
3444: $currentstring = $token->[2];
3445: } elsif ($target eq 'tex') {
3446: $currentstring = '}';
3447: }
3448: return $currentstring;
3449: }
3450:
3451: #-- <wbr> tag (end tag forbidden)
3452: sub start_wbr {
3453: my ($target,$token) = @_;
3454: my $currentstring = '';
3455: if ($target eq 'web') {
3456: $currentstring = $token->[4];
3457: }
3458: return $currentstring;
3459: }
3460:
3461: sub end_wbr {
3462: my ($target,$token) = @_;
3463: my $currentstring = '';
3464: if ($target eq 'web') {
3465: $currentstring = $token->[2];
3466: }
3467: return $currentstring;
3468: }
3469:
3470: #-- <hideweboutput> tag
3471: sub start_hideweboutput {
3472: my ($target,$token) = @_;
3473: if ($target eq 'web') {
3474: &Apache::lonxml::startredirection();
3475: }
3476: return '';
3477: }
3478:
3479: sub end_hideweboutput {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web') {
3483: $currentstring = &Apache::lonxml::endredirection();
3484: }
3485: return '';
3486: }
3487:
3488:
3489: sub image_replication {
3490: my $src = shift;
3491: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3492: #replicates eps or ps
3493: my $epssrc = my $pssrc = $src;
3494: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3495: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3496: if (not -e $epssrc && not -e $pssrc) {
3497: my $result=&Apache::lonnet::repcopy($epssrc);
3498: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3499: }
3500: return '';
3501: }
3502:
3503: sub image_size {
3504: my ($src,$scaling,$parstack,$safeeval)=@_;
3505: #size of image from gif/jpg/jpeg/png
3506: my $image = Image::Magick->new;
3507: my $current_figure = $image->Read($src);
3508: my $width_param = $image->Get('width') * $scaling;;
3509: my $height_param = $image->Get('height') * $scaling;;
3510: undef $image;
3511: #do we have any specified LaTeX size of the picture?
3512: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3513: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3514: #do we have any specified web size of the picture?
3515: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3516: undef,1);
3517: if ($TeXwidth ne '') {
3518: if ($TeXwidth=~/(\d+)\s*\%/) {
3519: $width_param = $1*$ENV{'form.textwidth'}/100;
3520: } else {
3521: $width_param = $TeXwidth;
3522: }
3523: } elsif ($TeXheight ne '') {
3524: $width_param = $TeXheight/$height_param*$width_param;
3525: } elsif ($width ne '') {
3526: $width_param = $width*$scaling;
3527: }
3528: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3529: return $width_param;
3530: }
3531:
3532: sub eps_generation {
3533: my ($src,$file,$width_param) = @_;
3534: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3535: my $temp_file = Apache::File->new('>>'.$filename);
3536: print $temp_file "$src\n";
3537: my $newsrc = $src;
3538: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3539: $newsrc=~s/\/home\/httpd\/html\/res//;
3540: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3541: $newsrc=~s/\/\.\//\//;
3542: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3543: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3544: }
3545:
3546: sub file_path {
3547: my $src=shift;
3548: my ($file,$path);
3549: if ($src =~ m!(.*)/([^/]*)$!) {
3550: $file = $2;
3551: $path = $1.'/';
3552: }
3553: return $file,$path;
3554: }
3555:
3556: sub recalc {
3557: my $argument = shift;
3558: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3559: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3560: my $value=$1;
3561: my $units=$2;
3562: if ($units eq 'cm') {
3563: $value*=10;
3564: } elsif ($units eq 'in') {
3565: $value*=25.4;
3566: } elsif ($units eq 'pc') {
3567: $value*=(25.4*12/72.27);
3568: } elsif ($units eq 'pt') {
3569: $value*=(25.4/72.27);
3570: }
3571: return $value.' mm';
3572: }
3573:
3574: sub LATEX_length {
3575: my $garbage=shift;
3576: $garbage=~s/^\s+$//;
3577: $garbage=~s/^\s+(\S.*)/$1/;#space before
3578: $garbage=~s/(.*\S)\s+$/$1/;#space after
3579: $garbage=~s/(\s)+/$1/;#only one space
3580: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3581: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3582: $garbage=~s/([^\\])\$/$1/g;#$
3583: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3584: $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;
3585: $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;
3586: $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;
3587: $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;
3588: $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)/11/g;
3589: $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)/11/g;
3590: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3591: #remove some other LaTeX command
3592: $garbage=~s|\\(\w+)\\|\\|g;
3593: $garbage=~s|\\(\w+)(\s*)|$2|g;
3594: $garbage=~s|\+|11|g;
3595:
3596: &Apache::lonnet::logthis("garbage was just $garbage");
3597: my $value=length($garbage);
3598: return $value;
3599: }
3600:
3601:
3602:
3603:
3604: 1;
3605: __END__
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