1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.230 2004/07/15 17:05:20 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}'.
166: '\usepackage{calc}'.
167: '\usepackage{amsmath}'.
168: '\usepackage{amssymb}'.
169: '\usepackage{amsfonts}'.
170: '\usepackage{amsthm}'.
171: '\usepackage{amscd}'.
172: '\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}}'.
173: '\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}}';
174: }
175: return $currentstring;
176: }
177:
178: sub end_html {
179: my ($target,$token) = @_;
180: my $currentstring = '';
181: if ($target eq 'web') {
182: $currentstring = &Apache::lonxml::xmlend();
183: }
184: return $currentstring;
185: }
186:
187: #-- <head> tag (end tag optional)
188: sub start_head {
189: my ($target,$token) = @_;
190: my $currentstring = '';
191: if ($target eq 'web') {
192: $currentstring = $token->[4];
193: }
194: return $currentstring;
195: }
196:
197: sub end_head {
198: my ($target,$token) = @_;
199: my $currentstring = '';
200: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
201: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
202: $token->[2];
203: }
204: return $currentstring;
205: }
206:
207: #-- <map> tag (end tag required)
208: sub start_map {
209: my ($target,$token) = @_;
210: my $currentstring = '';
211: if ($target eq 'web') {
212: $currentstring = $token->[4];
213: }
214: return $currentstring;
215: }
216:
217: sub end_map {
218: my ($target,$token) = @_;
219: my $currentstring = '';
220: if ($target eq 'web') {
221: $currentstring = $token->[2];
222: }
223: return $currentstring;
224: }
225:
226: #-- <select> tag (end tag required)
227: sub start_select {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web') {
231: $currentstring = $token->[4];
232: } elsif ($target eq 'tex') {
233: $Apache::londefdef::select=0;
234: }
235: return $currentstring;
236: }
237:
238: sub end_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web') {
242: $currentstring = $token->[2];
243: }
244: return $currentstring;
245: }
246:
247: #-- <option> tag (end tag optional)
248: sub start_option {
249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
250: my $currentstring = '';
251: if ($target eq 'web') {
252: $currentstring = $token->[4];
253: } elsif ($target eq 'tex') {
254: $Apache::londefdef::select++;
255: if ($Apache::londefdef::select == 1) {
256: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
257: } else {
258: $currentstring='\keephidden{';
259: }
260: }
261: return $currentstring;
262: }
263:
264: sub end_option {
265: my ($target,$token) = @_;
266: my $currentstring = '';
267: if ($target eq 'web') {
268: $currentstring = $token->[2];
269: } elsif ($target eq 'tex') {
270: $currentstring='}';
271: }
272: return $currentstring;
273: }
274:
275: #-- <input> tag (end tag forbidden)
276: sub start_input {
277: my ($target,$token) = @_;
278: my $currentstring = '';
279: if ($target eq 'web') {
280: $currentstring = $token->[4];
281: }
282: return $currentstring;
283: }
284:
285: sub end_input {
286: my ($target,$token) = @_;
287: my $currentstring = '';
288: if ($target eq 'web') {
289: $currentstring = $token->[2];
290: }
291: return $currentstring;
292: }
293:
294: #-- <textarea> tag (end tag required)
295: sub start_textarea {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web') {
299: $currentstring = $token->[4];
300: }
301: return $currentstring;
302: }
303:
304: sub end_textarea {
305: my ($target,$token) = @_;
306: my $currentstring = '';
307: if ($target eq 'web') {
308: $currentstring = $token->[2];
309: }
310: return $currentstring;
311: }
312:
313: #-- <form> tag (end tag required)
314: sub start_form {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web') {
318: $currentstring = $token->[4];
319: }
320: return $currentstring;
321: }
322:
323: sub end_form {
324: my ($target,$token) = @_;
325: my $currentstring = '';
326: if ($target eq 'web') {
327: $currentstring = $token->[2];
328: }
329: return $currentstring;
330: }
331:
332: #-- <title> tag (end tag required)
333: sub start_title {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web') {
337: $currentstring = $token->[4];
338: } elsif ($target eq 'tex') {
339: $currentstring .= '\keephidden{Title of the document: '
340: }
341: if ($target eq 'meta') {
342: $currentstring='<title>';
343: &start_output($target);
344: }
345: return $currentstring;
346: }
347:
348: sub end_title {
349: my ($target,$token) = @_;
350: my $currentstring = '';
351: if ($target eq 'web') {
352: $currentstring = $token->[2];
353: } elsif ($target eq 'tex') {
354: $currentstring .= '}';
355: }
356: if ($target eq 'meta') {
357: &end_output($target);
358: $currentstring='</title>';
359: }
360: return $currentstring;
361: }
362:
363: #-- <meta> tag (end tag forbidden)
364: sub start_meta {
365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
366: my $currentstring = '';
367: if ($target eq 'web') {
368: my $args='';
369: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
370: if ($args eq '') {
371: &Apache::lonxml::get_all_text("/meta",$parser);
372: } else {
373: $currentstring = $token->[4];
374: }
375: } elsif ($target eq 'meta') {
376: unless (&Apache::lonxml::get_param
377: ('http-equiv',$parstack,$safeeval,undef,1)) {
378: my $name=$token->[2]->{'name'};
379: $name=~tr/A-Z/a-z/;
380: $name=~s/\s/\_/gs;
381: $name=~s/\W//gs;
382: if ($name) {
383: $currentstring='<'.$name;
384: my $display=&Apache::lonxml::get_param
385: ('display',$parstack,$safeeval,undef,1);
386: if ($display) {
387: $display=~s/\"/\'/g;
388: $currentstring.=' display="'.$display.'"';
389: }
390: $currentstring.='>'.
391: &Apache::lonxml::get_param
392: ('content',$parstack,$safeeval,undef,1).
393: '</'.$name.'>';
394: }
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=&HTML::Entities::encode($display,'<>&"');
399: $currentstring.='<'.$name.'.display>'.$display.
400: '</'.$name.'.display>';
401: }
402: }
403: } elsif ($target eq 'tex') {
404: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
405: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
406: if ((not defined $content) && (not defined $name)) {
407: &Apache::lonxml::startredirection();
408: }
409: }
410: return $currentstring;
411: }
412:
413: sub end_meta {
414: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
415: my $currentstring = '';
416: if ($target eq 'web') {
417: my $args='';
418: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
419: if ($args ne '') {
420: $currentstring = $token->[4];
421: }
422: } elsif ($target eq 'tex') {
423: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
424: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
425: if ((not defined $content) && (not defined $name)) {
426: &Apache::lonxml::endredirection();
427: }
428: }
429: return $currentstring;
430: }
431:
432: # accessrule
433: sub start_accessrule {
434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
435: my $currentstring = '';
436: my $eff=&Apache::lonxml::get_param
437: ('effect',$parstack,$safeeval,undef,1);
438: my $realm=&Apache::lonxml::get_param
439: ('realm',$parstack,$safeeval,undef,1);
440: my $role=&Apache::lonxml::get_param
441: ('role',$parstack,$safeeval,undef,1);
442: $realm=~s/\s+//g;
443: $realm=~s/\//\_/g;
444: $realm=~s/^\_//;
445: $realm=~s/\W/\;/g;
446: $role=~s/\s+//g;
447: $role=~s/\//\_/g;
448: $role=~s/\W/\;/g;
449: if ($target eq 'web') {
450: my $args='';
451: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
452: if ($args eq '') {
453: &Apache::lonxml::get_all_text("/accessrule",$parser);
454: } else {
455: $currentstring = $token->[4];
456: }
457: }
458: if ($target eq 'meta') {
459: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
460: }
461: return $currentstring;
462: }
463:
464: sub end_accessrule {
465: my ($target,$token,$tagstack,$parstack,$parser) = @_;
466: my $currentstring = '';
467: if ($target eq 'web') {
468: my $args='';
469: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
470: if ($args ne '') {
471: $currentstring = $token->[4];
472: }
473: }
474: return $currentstring;
475: }
476:
477: #-- <body> tag (end tag required)
478: sub start_body {
479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
480: my $currentstring = '';
481: if ($target eq 'web') {
482: if ($Apache::lonhomework::parsing_a_problem) {
483: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
484: return '';
485: }
486: if (!$Apache::lonxml::registered &&
487: $ENV{'request.state'} eq 'published') {
488: $currentstring.='<head>'.
489: &Apache::lonmenu::registerurl(undef,$target).'</head>';
490: }
491: # Accessibility
492: if ($ENV{'browser.imagesuppress'} eq 'on') {
493: delete($token->[2]->{'background'});
494: }
495: if ($ENV{'browser.fontenhance'} eq 'on') {
496: my $style='';
497: foreach my $key (keys(%{$token->[2]})) {
498: if ($key =~ /^style$/i) {
499: $style.=$token->[2]->{$key}.';';
500: delete($token->[2]->{$key});
501: }
502: }
503: $token->[2]->{'style'}=$style.'; font-size: x-large;';
504: }
505: if ($ENV{'browser.blackwhite'} eq 'on') {
506: delete($token->[2]->{'font'});
507: delete($token->[2]->{'link'});
508: delete($token->[2]->{'alink'});
509: delete($token->[2]->{'vlink'});
510: delete($token->[2]->{'bgcolor'});
511: delete($token->[2]->{'background'});
512: }
513: # Overload loads
514: my $onLoad='';
515: foreach my $key (keys(%{$token->[2]})) {
516: if ($key =~ /^onload$/i) {
517: $onLoad.=$token->[2]->{$key}.';';
518: delete($token->[2]->{$key});
519: }
520: }
521: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
522: my $onUnload='';
523: foreach my $key (keys(%{$token->[2]})) {
524: if ($key =~ /^onunload$/i) {
525: $onUnload.=$token->[2]->{$key}.';';
526: delete($token->[2]->{$key});
527: }
528: }
529: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
530: ';'.$onUnload;
531:
532: $currentstring .= '<'.$token->[1];
533: foreach (keys %{$token->[2]}) {
534: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
535: }
536: $currentstring.='>';
537: if ($ENV{'request.state'} ne 'published') {
538: $currentstring.=(<<EDITBUTTON);
539: <form method="post">
540: <input type="submit" name="editmode" accesskey="e" value="Edit" />
541: </form>
542: EDITBUTTON
543: } else {
544: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
545: }
546: $currentstring.=&Apache::lonxml::message_location();
547: } elsif ($target eq 'tex') {
548: $currentstring = '\begin{document}';
549: }
550: return $currentstring;
551: }
552:
553: sub end_body {
554: my ($target,$token) = @_;
555: my $currentstring = '';
556: if ($target eq 'web') {
557: $currentstring = $token->[2];
558: } elsif ($target eq 'tex') {
559: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
560: }
561: return $currentstring;
562: }
563:
564: #-- <center> tag (end tag required)
565: sub start_center {
566: my ($target,$token) = @_;
567: my $currentstring = '';
568: if ($target eq 'web') {
569: $currentstring = $token->[4];
570: } elsif ($target eq 'tex') {
571: $currentstring = '\begin{center}';
572: }
573: return $currentstring;
574: }
575:
576: sub end_center {
577: my ($target,$token) = @_;
578: my $currentstring = '';
579: if ($target eq 'web') {
580: $currentstring = $token->[2];
581: } elsif ($target eq 'tex') {
582: $currentstring = '\end{center}';
583: }
584: return $currentstring;
585: }
586:
587: #-- <b> tag (end tag required)
588: sub start_b {
589: my ($target,$token) = @_;
590: my $currentstring = '';
591: if ($target eq 'web') {
592: $currentstring = $token->[4];
593: } elsif ($target eq 'tex') {
594: $currentstring = '\textbf{';
595: }
596: return $currentstring;
597: }
598:
599: sub end_b {
600: my ($target,$token) = @_;
601: my $currentstring = '';
602: if ($target eq 'web') {
603: $currentstring = $token->[2];
604: } elsif ($target eq 'tex') {
605: $currentstring = '}';
606: }
607: return $currentstring;
608: }
609:
610: #-- <strong> tag (end tag required)
611: sub start_strong {
612: my ($target,$token) = @_;
613: my $currentstring = '';
614: if ($target eq 'web') {
615: $currentstring = $token->[4];
616: } elsif ($target eq 'tex') {
617: $currentstring = '\textbf{';
618: }
619: return $currentstring;
620: }
621:
622: sub end_strong {
623: my ($target,$token) = @_;
624: my $currentstring = '';
625: if ($target eq 'web') {
626: $currentstring = $token->[2];
627: } elsif ($target eq 'tex') {
628: $currentstring = '}';
629: }
630: return $currentstring;
631: }
632:
633: #-- <h1> tag (end tag required)
634: sub start_h1 {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
636: my $currentstring = '';
637: if ($target eq 'web') {
638: $currentstring .= $token->[4];
639: } elsif ($target eq 'tex') {
640: my $pre;
641: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
642: if ($align eq 'center') {
643: $pre='\begin{center}';
644: } elsif ($align eq 'left') {
645: $pre='\rlap{';
646: } elsif ($align eq 'right') {
647: $pre=' \hfill \llap{';
648: }
649: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
650: if (not defined $TeXsize) {$TeXsize="large";}
651: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
652: } elsif ($target eq 'meta') {
653: $currentstring='<subject>';
654: &start_output($target);
655: }
656: return $currentstring;
657: }
658:
659: sub end_h1 {
660: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
661: my $currentstring = '';
662: if ($target eq 'web') {
663: $currentstring .= $token->[2];
664: } elsif ($target eq 'tex') {
665: my $post='\vskip 0 mm ';
666: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
667: if ($align eq 'center') {
668: $post='\end{center}';
669: } elsif ($align eq 'left') {
670: $post='} \hfill'.'\vskip 0 mm ';
671: } elsif ($align eq 'right') {
672: $post='}'.'\vskip 0 mm ';
673: }
674: $currentstring .= '}}'.$post;
675: } elsif ($target eq 'meta') {
676: &end_output($target);
677: $currentstring='</subject>';
678: }
679: return $currentstring;
680: }
681:
682: #-- <h2> tag
683: sub start_h2 {
684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
685: my $currentstring = '';
686: if ($target eq 'web') {
687: $currentstring .= $token->[4];
688: } elsif ($target eq 'tex') {
689: my $pre;
690: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
691: if ($align eq 'center') {
692: $pre='\begin{center}';
693: } elsif ($align eq 'left') {
694: $pre='\rlap{';
695: } elsif ($align eq 'right') {
696: $pre=' \hfill \llap{';
697: }
698: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
699: if (not defined $TeXsize) {$TeXsize="large";}
700: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_h2 {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
707: my $currentstring = '';
708: if ($target eq 'web') {
709: $currentstring .= $token->[2];
710: } elsif ($target eq 'tex') {
711: my $post='\vskip 0 mm ';
712: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
713: if ($align eq 'center') {
714: $post='\end{center}';
715: } elsif ($align eq 'left') {
716: $post='} \hfill'.'\vskip 0 mm ';
717: } elsif ($align eq 'right') {
718: $post='}'.'\vskip 0 mm ';
719: }
720: $currentstring .= '}}'.$post;
721: }
722: return $currentstring;
723: }
724:
725: #-- <h3> tag
726: sub start_h3 {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
728: my $currentstring = '';
729: if ($target eq 'web') {
730: $currentstring .= $token->[4];
731: } elsif ($target eq 'tex') {
732: my $pre;
733: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
734: if ($align eq 'center') {
735: $pre='\begin{center}';
736: } elsif ($align eq 'left') {
737: $pre='\rlap{';
738: } elsif ($align eq 'right') {
739: $pre=' \hfill \llap{';
740: }
741: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
742: if (not defined $TeXsize) {$TeXsize="large";}
743: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
744: }
745: return $currentstring;
746: }
747:
748: sub end_h3 {
749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
750: my $currentstring = '';
751: if ($target eq 'web') {
752: $currentstring .= $token->[2];
753: } elsif ($target eq 'tex') {
754: my $post='\vskip 0 mm ';
755: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
756: if ($align eq 'center') {
757: $post='\end{center}';
758: } elsif ($align eq 'left') {
759: $post='} \hfill'.'\vskip 0 mm ';
760: } elsif ($align eq 'right') {
761: $post='}'.'\vskip 0 mm ';
762: }
763: $currentstring .= '}}'.$post;
764: }
765: return $currentstring;
766: }
767:
768: #-- <h4> tag
769: sub start_h4 {
770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
771: my $currentstring = '';
772: if ($target eq 'web') {
773: $currentstring .= $token->[4];
774: } elsif ($target eq 'tex') {
775: my $pre;
776: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
777: if ($align eq 'center') {
778: $pre='\begin{center}';
779: } elsif ($align eq 'left') {
780: $pre='\rlap{';
781: } elsif ($align eq 'right') {
782: $pre=' \hfill \llap{';
783: }
784: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
785: if (not defined $TeXsize) {$TeXsize="large";}
786: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
787: }
788: return $currentstring;
789: }
790:
791: sub end_h4 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = '';
794: if ($target eq 'web') {
795: $currentstring .= $token->[2];
796: } elsif ($target eq 'tex') {
797: my $post='\vskip 0 mm ';
798: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
799: if ($align eq 'center') {
800: $post='\end{center}';
801: } elsif ($align eq 'left') {
802: $post='} \hfill'.'\vskip 0 mm ';
803: } elsif ($align eq 'right') {
804: $post='}'.'\vskip 0 mm ';
805: }
806: $currentstring .= '}}'.$post;
807: }
808: return $currentstring;
809: }
810:
811: #-- <h5> tag
812: sub start_h5 {
813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
814: my $currentstring = '';
815: if ($target eq 'web') {
816: $currentstring .= $token->[4];
817: } elsif ($target eq 'tex') {
818: my $pre;
819: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
820: if ($align eq 'center') {
821: $pre='\begin{center}';
822: } elsif ($align eq 'left') {
823: $pre='\rlap{';
824: } elsif ($align eq 'right') {
825: $pre=' \hfill \llap{';
826: }
827: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
828: if (not defined $TeXsize) {$TeXsize="large";}
829: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
830: }
831: return $currentstring;
832: }
833:
834: sub end_h5 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = '';
837: if ($target eq 'web') {
838: $currentstring .= $token->[2];
839: } elsif ($target eq 'tex') {
840: my $post='\vskip 0 mm ';
841: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
842: if ($align eq 'center') {
843: $post='\end{center}';
844: } elsif ($align eq 'left') {
845: $post='} \hfill'.'\vskip 0 mm ';
846: } elsif ($align eq 'right') {
847: $post='}'.'\vskip 0 mm ';
848: }
849: $currentstring .= '}}'.$post;
850: }
851: return $currentstring;
852: }
853:
854: #-- <h6> tag
855: sub start_h6 {
856: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
857: my $currentstring = '';
858: if ($target eq 'web') {
859: $currentstring .= $token->[4];
860: } elsif ($target eq 'tex') {
861: my $pre;
862: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
863: if ($align eq 'center') {
864: $pre='\begin{center}';
865: } elsif ($align eq 'left') {
866: $pre='\rlap{';
867: } elsif ($align eq 'right') {
868: $pre=' \hfill \llap{';
869: }
870: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
871: if (not defined $TeXsize) {$TeXsize="large";}
872: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
873: }
874: return $currentstring;
875: }
876:
877: sub end_h6 {
878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
879: my $currentstring = '';
880: if ($target eq 'web') {
881: $currentstring .= $token->[2];
882: } elsif ($target eq 'tex') {
883: my $post='\vskip 0 mm ';
884: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
885: if ($align eq 'center') {
886: $post='\end{center}';
887: } elsif ($align eq 'left') {
888: $post='} \hfill'.'\vskip 0 mm ';
889: } elsif ($align eq 'right') {
890: $post='}'.'\vskip 0 mm ';
891: }
892: $currentstring .= '}}'.$post;
893: }
894: return $currentstring;
895: }
896:
897: #--- <cite> tag (end tag required)
898: sub start_cite {
899: my ($target,$token) = @_;
900: my $currentstring = '';
901: if ($target eq 'web') {
902: $currentstring .= $token->[4];
903: } elsif ($target eq 'tex') {
904: $currentstring .= '\textit{';
905: }
906: return $currentstring;
907: }
908:
909: sub end_cite {
910: my ($target,$token) = @_;
911: my $currentstring = '';
912: if ($target eq 'web') {
913: $currentstring .= $token->[2];
914: } elsif ($target eq 'tex') {
915: $currentstring .= '}';
916: }
917: return $currentstring;
918: }
919:
920: #-- <i> tag (end tag required)
921: sub start_i {
922: my ($target,$token) = @_;
923: my $currentstring = '';
924: if ($target eq 'web') {
925: $currentstring .= $token->[4];
926: } elsif ($target eq 'tex') {
927: $currentstring .= '\textit{';
928: }
929: return $currentstring;
930: }
931:
932: sub end_i {
933: my ($target,$token) = @_;
934: my $currentstring = '';
935: if ($target eq 'web') {
936: $currentstring .= $token->[2];
937: } elsif ($target eq 'tex') {
938: $currentstring .= '}';
939: }
940: return $currentstring;
941: }
942:
943: #-- <address> tag (end tag required)
944: sub start_address {
945: my ($target,$token) = @_;
946: my $currentstring = '';
947: if ($target eq 'web') {
948: $currentstring .= $token->[4];
949: } elsif ($target eq 'tex') {
950: $currentstring .= '\textit{';
951: }
952: return $currentstring;
953: }
954:
955: sub end_address {
956: my ($target,$token) = @_;
957: my $currentstring = '';
958: if ($target eq 'web') {
959: $currentstring .= $token->[2];
960: } elsif ($target eq 'tex') {
961: $currentstring .= '}';
962: }
963: return $currentstring;
964: }
965:
966: #-- <dfn> tag (end tag required)
967: sub start_dfn {
968: my ($target,$token) = @_;
969: my $currentstring = '';
970: if ($target eq 'web') {
971: $currentstring .= $token->[4];
972: } elsif ($target eq 'tex') {
973: $currentstring .= '\textit{';
974: }
975: return $currentstring;
976: }
977:
978: sub end_dfn {
979: my ($target,$token) = @_;
980: my $currentstring = '';
981: if ($target eq 'web') {
982: $currentstring .= $token->[2];
983: } elsif ($target eq 'tex') {
984: $currentstring .= '}';
985: }
986: return $currentstring;
987: }
988:
989: #-- <tt> tag (end tag required)
990: sub start_tt {
991: my ($target,$token) = @_;
992: my $currentstring = '';
993: if ($target eq 'web') {
994: $currentstring .= $token->[4];
995: } elsif ($target eq 'tex') {
996: $currentstring .= '\texttt{';
997: }
998: return $currentstring;
999: }
1000:
1001: sub end_tt {
1002: my ($target,$token) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web') {
1005: $currentstring .= $token->[2];
1006: } elsif ($target eq 'tex') {
1007: $currentstring .= '}';
1008: }
1009: return $currentstring;
1010: }
1011:
1012: #-- <kbd> tag (end tag required)
1013: sub start_kbd {
1014: my ($target,$token) = @_;
1015: my $currentstring = '';
1016: if ($target eq 'web') {
1017: $currentstring .= $token->[4];
1018: } elsif ($target eq 'tex') {
1019: $currentstring .= '\texttt{';
1020: }
1021: return $currentstring;
1022: }
1023:
1024: sub end_kbd {
1025: my ($target,$token) = @_;
1026: my $currentstring = '';
1027: if ($target eq 'web') {
1028: $currentstring .= $token->[2];
1029: } elsif ($target eq 'tex') {
1030: $currentstring .= '}';
1031: }
1032: return $currentstring;
1033: }
1034:
1035: #-- <code> tag (end tag required)
1036: sub start_code {
1037: my ($target,$token) = @_;
1038: my $currentstring = '';
1039: if ($target eq 'web') {
1040: $currentstring .= $token->[4];
1041: } elsif ($target eq 'tex') {
1042: $currentstring .= '\texttt{';
1043: }
1044: return $currentstring;
1045: }
1046:
1047: sub end_code {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web') {
1051: $currentstring .= $token->[2];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '}';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: #-- <em> tag (end tag required)
1059: sub start_em {
1060: my ($target,$token) = @_;
1061: my $currentstring = '';
1062: if ($target eq 'web') {
1063: $currentstring .= $token->[4];
1064: } elsif ($target eq 'tex') {
1065: $currentstring .= '\emph{';
1066: }
1067: return $currentstring;
1068: }
1069:
1070: sub end_em {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web') {
1074: $currentstring .= $token->[2];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '}';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: #-- <q> tag (end tag required)
1082: sub start_q {
1083: my ($target,$token) = @_;
1084: my $currentstring = '';
1085: if ($target eq 'web') {
1086: $currentstring .= $token->[4];
1087: } elsif ($target eq 'tex') {
1088: $currentstring .= '\emph{';
1089: }
1090: return $currentstring;
1091: }
1092:
1093: sub end_q {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web') {
1097: $currentstring .= $token->[2];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '}';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: #-- <p> tag (end tag optional)
1105: #optional attribute - align="center|left|right"
1106: sub start_p {
1107: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web') {
1110: $currentstring .= $token->[4];
1111: } elsif ($target eq 'tex') {
1112: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1113: if ($align eq 'center') {
1114: $currentstring='\begin{center}\par';
1115: } elsif ($align eq 'right') {
1116: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1117: } elsif ($align eq 'left') {
1118: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1119: } else {
1120: $currentstring='\par ';
1121: }
1122: my $signal=1;#<p> does not work inside <b>...</b>
1123: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1124: if (!$signal) {$currentstring = '';}
1125: }
1126: }
1127: return $currentstring;
1128: }
1129:
1130: sub end_p {
1131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web') {
1134: $currentstring .= $token->[2];
1135: } elsif ($target eq 'tex') {
1136: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1137: if ($align eq 'center') {
1138: $currentstring .= '\end{center}';
1139: } elsif ($align eq 'right') {
1140: $currentstring .= '}}';
1141: } elsif ($align eq 'left') {
1142: $currentstring .= '}\hfill}';
1143: }
1144: }
1145: return $currentstring;
1146: }
1147:
1148: #-- <br> tag (end tag forbidden)
1149: sub start_br {
1150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1151: my $currentstring = '';
1152: if ($target eq 'web') {
1153: $currentstring .= $token->[4];
1154: } elsif ($target eq 'tex') {
1155: my @tempo=@$tagstack;
1156: my $signal=0;
1157: for (my $i=$#tempo;$i>=0;$i--) {
1158: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1159: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1160: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1161: $signal=1;
1162: last;
1163: }
1164: }
1165: if ($signal) {
1166: $currentstring .= ' \vskip 0 mm ';
1167: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1168: $currentstring .= '\strut \\\\ \strut ';
1169: }
1170: }
1171: return $currentstring;
1172: }
1173:
1174: sub end_br {
1175: my ($target,$token) = @_;
1176: my $currentstring = '';
1177: if ($target eq 'web') {
1178: $currentstring .= $token->[2];
1179: }
1180: return $currentstring;
1181: }
1182:
1183: #-- <big> tag (end tag required)
1184: sub start_big {
1185: my ($target,$token) = @_;
1186: my $currentstring = '';
1187: if ($target eq 'web') {
1188: $currentstring .= $token->[4];
1189: } elsif ($target eq 'tex') {
1190: $currentstring .= '{\large ';
1191: }
1192: return $currentstring;
1193: }
1194:
1195: sub end_big {
1196: my ($target,$token) = @_;
1197: my $currentstring = '';
1198: if ($target eq 'web') {
1199: $currentstring .= $token->[2];
1200: } elsif ($target eq 'tex') {
1201: $currentstring .= '}';
1202: }
1203: return $currentstring;
1204: }
1205:
1206: #-- <small> tag (end tag required)
1207: sub start_small {
1208: my ($target,$token) = @_;
1209: my $currentstring = '';
1210: if ($target eq 'web') {
1211: $currentstring .= $token->[4];
1212: } elsif ($target eq 'tex') {
1213: $currentstring .= '{\footnotesize ';
1214: }
1215: return $currentstring;
1216: }
1217:
1218: sub end_small {
1219: my ($target,$token) = @_;
1220: my $currentstring = '';
1221: if ($target eq 'web') {
1222: $currentstring .= $token->[2];
1223: } elsif ($target eq 'tex') {
1224: $currentstring .= '}';
1225: }
1226: return $currentstring;
1227: }
1228:
1229: #-- <basefont> tag (end tag forbidden)
1230: sub start_basefont {
1231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1232: my $currentstring = '';
1233: if ($target eq 'web') {
1234: $currentstring = $token->[4];
1235: } elsif ($target eq 'tex') {
1236: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1237: if (defined $basesize) {
1238: $currentstring = '{\\'.$basesize.' ';
1239: }
1240: }
1241: return $currentstring;
1242: }
1243:
1244: sub end_basefont {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1246: my $currentstring = '';
1247: if ($target eq 'web') {
1248: $currentstring = $token->[4];
1249: } elsif ($target eq 'tex') {
1250: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1251: if (defined $basesize) {
1252: $currentstring = '}';
1253: }
1254: }
1255: return $currentstring;
1256: }
1257:
1258: #-- <font> tag (end tag required)
1259: sub start_font {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1261: my $currentstring = '';
1262: if ($target eq 'web') {
1263: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1264: if ($face!~/symbol/i) {
1265: if (($ENV{'browser.fontenhance'} eq 'on') ||
1266: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1267: }
1268: $currentstring = $token->[4];
1269: } elsif ($target eq 'tex') {
1270: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1271: if (defined $fontsize) {
1272: $currentstring = '{\\'.$fontsize.' ';
1273: }
1274: }
1275: return $currentstring;
1276: }
1277:
1278: sub end_font {
1279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1280: my $currentstring = '';
1281: if ($target eq 'web') {
1282: $currentstring = $token->[2];
1283: } elsif ($target eq 'tex') {
1284: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1285: if (defined $fontsize) {
1286: $currentstring = '}';
1287: }
1288: }
1289: return $currentstring;
1290: }
1291:
1292: #-- <strike> tag (end tag required)
1293: sub start_strike {
1294: my ($target,$token) = @_;
1295: my $currentstring = '';
1296: if ($target eq 'web') {
1297: $currentstring .= $token->[4];
1298: } elsif ($target eq 'tex') {
1299: &Apache::lonxml::startredirection();
1300: }
1301: return $currentstring;
1302: }
1303:
1304: sub end_strike {
1305: my ($target,$token) = @_;
1306: my $currentstring = '';
1307: if ($target eq 'web') {
1308: $currentstring .= $token->[2];
1309: } elsif ($target eq 'tex') {
1310: $currentstring=&Apache::lonxml::endredirection();
1311: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1312: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1313: $currentstring=~s/(\S)\s*$/$1\}/;
1314: }
1315: return $currentstring;
1316: }
1317:
1318: #-- <s> tag (end tag required)
1319: sub start_s {
1320: my ($target,$token) = @_;
1321: my $currentstring = '';
1322: if ($target eq 'web') {
1323: $currentstring .= $token->[4];
1324: } elsif ($target eq 'tex') {
1325: &Apache::lonxml::startredirection();
1326: }
1327: return $currentstring;
1328: }
1329:
1330: sub end_s {
1331: my ($target,$token) = @_;
1332: my $currentstring = '';
1333: if ($target eq 'web') {
1334: $currentstring .= $token->[2];
1335: } elsif ($target eq 'tex') {
1336: $currentstring=&Apache::lonxml::endredirection();
1337: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1338: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1339: $currentstring=~s/(\S)\s*$/$1\}/;
1340: }
1341: return $currentstring;
1342: }
1343:
1344: #-- <sub> tag (end tag required)
1345: sub start_sub {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web') {
1349: $currentstring .= $token->[4];
1350: } elsif ($target eq 'tex') {
1351: $currentstring .= '\ensuremath{_{';
1352: }
1353: return $currentstring;
1354: }
1355:
1356: sub end_sub {
1357: my ($target,$token) = @_;
1358: my $currentstring = '';
1359: if ($target eq 'web') {
1360: $currentstring .= $token->[2];
1361: } elsif ($target eq 'tex') {
1362: $currentstring .= '}}';
1363: }
1364: return $currentstring;
1365: }
1366:
1367: #-- <sup> tag (end tag required)
1368: sub start_sup {
1369: my ($target,$token) = @_;
1370: my $currentstring = '';
1371: if ($target eq 'web') {
1372: $currentstring .= $token->[4];
1373: } elsif ($target eq 'tex') {
1374: $currentstring .= '\ensuremath{^{';
1375: }
1376: return $currentstring;
1377: }
1378:
1379: sub end_sup {
1380: my ($target,$token) = @_;
1381: my $currentstring = '';
1382: if ($target eq 'web') {
1383: $currentstring .= $token->[2];
1384: } elsif ($target eq 'tex') {
1385: $currentstring .= '}}';
1386: }
1387: return $currentstring;
1388: }
1389:
1390: #-- <hr> tag (end tag forbidden)
1391: sub start_hr {
1392: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1393: my $currentstring = '';
1394: if ($target eq 'web') {
1395: $currentstring .= $token->[4];
1396: } elsif ($target eq 'tex') {
1397: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1398: if (defined $LaTeXwidth) {
1399: if ($LaTeXwidth=~/^%/) {
1400: substr($LaTeXwidth,0,1)='';
1401: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1402: }
1403: } else {
1404: $LaTeXwidth ='0.9\textwidth';
1405: }
1406: my ($pre,$post);
1407: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1408: if (($align eq 'center') || (not defined $align)) {
1409: $pre=''; $post='';
1410: } elsif ($align eq 'left') {
1411: $pre='\rlap{'; $post='} \hfill';
1412: } elsif ($align eq 'right') {
1413: $pre=' \hfill \llap{'; $post='}';
1414: }
1415: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1416: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1417: }
1418: return $currentstring;
1419: }
1420:
1421: sub end_hr {
1422: my ($target,$token) = @_;
1423: my $currentstring = '';
1424: if ($target eq 'web') {
1425: $currentstring .= $token->[2];
1426: }
1427: return $currentstring;
1428: }
1429:
1430: #-- <div> tag (end tag required)
1431: sub start_div {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web') {
1435: $currentstring .= $token->[4];
1436: }
1437: return $currentstring;
1438: }
1439:
1440: sub end_div {
1441: my ($target,$token) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web') {
1444: $currentstring .= $token->[2];
1445: }
1446: return $currentstring;
1447: }
1448:
1449: #-- <a> tag (end tag required)
1450: sub start_a {
1451: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1452: my $currentstring = '';
1453: if ($target eq 'web') {
1454: $currentstring .= $token->[4];
1455: } elsif ($target eq 'tex') {
1456: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1457: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1458: if ($a=~/\S/) {
1459: $a=~s/([^\\])%/$1\\\%/g;
1460: $currentstring .= '\ref{URI: '.$a.'}';
1461: } elsif ($b=~/\S/) {
1462: $currentstring .= '\ref{Anchor: '.$b.'}';
1463: } else {
1464: $currentstring.='';
1465: }
1466: }
1467: return $currentstring;
1468: }
1469:
1470: sub end_a {
1471: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1472: my $currentstring = '';
1473: if ($target eq 'web') {
1474: $currentstring .= $token->[2];
1475: }
1476: return $currentstring;
1477: }
1478:
1479: #-- <li> tag (end tag optional)
1480: sub start_li {
1481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1482: my $currentstring = '';
1483: if ($target eq 'web') {
1484: $currentstring = $token->[4];
1485: } elsif ($target eq 'tex') {
1486: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1487: if ($type=~/circle/) {
1488: $currentstring .= ' \item[o] ';
1489: } elsif ($type=~/square/) {
1490: $currentstring .= ' \item[$\Box$] ';
1491: } elsif ($type ne '') {
1492: $currentstring .= ' \item['.$type.'] ';
1493: } else {
1494: $currentstring .= ' \item ';
1495: }
1496: }
1497: return $currentstring;
1498: }
1499:
1500: sub end_li {
1501: my ($target,$token) = @_;
1502: my $currentstring = '';
1503: if ($target eq 'web') {
1504: $currentstring = $token->[2];
1505: }
1506: return $currentstring;
1507: }
1508:
1509: #-- <u> tag (end tag required)
1510: sub start_u {
1511: my ($target,$token) = @_;
1512: my $currentstring = '';
1513: if ($target eq 'web') {
1514: $currentstring .= $token->[4];
1515: } elsif ($target eq 'tex') {
1516: &Apache::lonxml::startredirection();
1517: }
1518: return $currentstring;
1519: }
1520:
1521: sub end_u {
1522: my ($target,$token) = @_;
1523: my $currentstring = '';
1524: if ($target eq 'web') {
1525: $currentstring .= $token->[2];
1526: } elsif ($target eq 'tex') {
1527: $currentstring=&Apache::lonxml::endredirection();
1528: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1529: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1530: $currentstring=~s/(\S)\s*$/$1\}/;
1531: }
1532: return $currentstring;
1533: }
1534:
1535: #-- <ul> tag (end tag required)
1536: sub start_ul {
1537: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1538: my $currentstring = '';
1539: if ($target eq 'web') {
1540: $currentstring = $token->[4];
1541: } elsif ($target eq 'tex') {
1542: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1543: if ($TeXtype eq 'disc') {
1544: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1545: '\renewcommand{\labelitemii}{$\bullet$}'.
1546: '\renewcommand{\labelitemiii}{$\bullet$}'.
1547: '\renewcommand{\labelitemiv}{$\bullet$}';
1548: } elsif ($TeXtype eq 'circle') {
1549: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1550: '\renewcommand{\labelitemii}{$\circ$}'.
1551: '\renewcommand{\labelitemiii}{$\circ$}'.
1552: '\renewcommand{\labelitemiv}{$\circ$}';
1553: } elsif ($TeXtype eq 'square') {
1554: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1555: '\renewcommand{\labelitemii}{$\diamond$}'.
1556: '\renewcommand{\labelitemiii}{$\diamond$}'.
1557: '\renewcommand{\labelitemiv}{$\diamond$}';
1558: }
1559: $currentstring .= '\strut \begin{itemize}';
1560: }
1561: return $currentstring;
1562: }
1563:
1564: sub end_ul {
1565: my ($target,$token) = @_;
1566: my $currentstring = '';
1567: if ($target eq 'web') {
1568: $currentstring = $token->[2];
1569: } elsif ($target eq 'tex') {
1570: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1571: '\renewcommand{\labelitemii}{$\bullet$}'.
1572: '\renewcommand{\labelitemiii}{$\bullet$}'.
1573: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1574: }
1575: return $currentstring;
1576: }
1577:
1578: #-- <menu> tag (end tag required)
1579: sub start_menu {
1580: my ($target,$token) = @_;
1581: my $currentstring = '';
1582: if ($target eq 'web') {
1583: $currentstring = $token->[4];
1584: } elsif ($target eq 'tex') {
1585: $currentstring = " \\begin{itemize} ";
1586: }
1587: return $currentstring;
1588: }
1589:
1590: sub end_menu {
1591: my ($target,$token) = @_;
1592: my $currentstring = '';
1593: if ($target eq 'web') {
1594: $currentstring = $token->[2];
1595: } elsif ($target eq 'tex') {
1596: $currentstring = " \\end{itemize}";
1597: }
1598: return $currentstring;
1599: }
1600:
1601: #-- <dir> tag (end tag required)
1602: sub start_dir {
1603: my ($target,$token) = @_;
1604: my $currentstring = '';
1605: if ($target eq 'web') {
1606: $currentstring = $token->[4];
1607: } elsif ($target eq 'tex') {
1608: $currentstring = " \\begin{itemize} ";
1609: }
1610: return $currentstring;
1611: }
1612:
1613: sub end_dir {
1614: my ($target,$token) = @_;
1615: my $currentstring = '';
1616: if ($target eq 'web') {
1617: $currentstring = $token->[2];
1618: } elsif ($target eq 'tex') {
1619: $currentstring = " \\end{itemize}";
1620: }
1621: return $currentstring;
1622: }
1623:
1624: #-- <ol> tag (end tag required)
1625: sub start_ol {
1626: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1627: my $currentstring = '';
1628: if ($target eq 'web') {
1629: $currentstring = $token->[4];
1630: } elsif ($target eq 'tex') {
1631: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1632: if ($type eq '1') {
1633: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1634: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1635: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1636: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1637: } elsif ($type eq 'A') {
1638: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1639: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1640: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1641: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1642: } elsif ($type eq 'a') {
1643: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1644: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1645: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1646: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1647: } elsif ($type eq 'i') {
1648: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1649: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1650: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1651: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1652: } elsif ($type eq 'I') {
1653: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1654: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1655: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1656: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1657: }
1658: $currentstring .= '\strut \begin{enumerate}';
1659: }
1660: return $currentstring;
1661: }
1662:
1663: sub end_ol {
1664: my ($target,$token) = @_;
1665: my $currentstring = '';
1666: if ($target eq 'web') {
1667: $currentstring = $token->[2];
1668: } elsif ($target eq 'tex') {
1669: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1670: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1671: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1672: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1673: }
1674: return $currentstring;
1675: }
1676:
1677: #-- <dl> tag (end tag required)
1678: sub start_dl {
1679: my ($target,$token) = @_;
1680: my $currentstring = '';
1681: if ($target eq 'web') {
1682: $currentstring = $token->[4];
1683: } elsif ($target eq 'tex') {
1684: $currentstring = '\begin{description}';
1685: @Apache::londefdef::description=();
1686: $Apache::londefdef::DD_redirection=0;
1687: $Apache::londefdef::DT_redirection=0;
1688: }
1689: return $currentstring;
1690: }
1691:
1692: sub end_dl {
1693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1694: my $currentstring = '';
1695: if ($target eq 'web') {
1696: $currentstring = $token->[2];
1697: } elsif ($target eq 'tex') {
1698: if ($Apache::londefdef::DT_redirection) {
1699: my $data=&item_cleanup;
1700: push @Apache::londefdef::description,'\item['.$data.']';
1701: $Apache::londefdef::DT_redirection=0;
1702: } elsif ($Apache::londefdef::DD_redirection) {
1703: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1704: }
1705: foreach my $element (@Apache::londefdef::description) {
1706: $currentstring.=' '.$element.' ';
1707: }
1708: @Apache::londefdef::description=();
1709: $currentstring.='\end{description}';
1710: }
1711: return $currentstring;
1712: }
1713:
1714: #-- <dt> tag (end tag optional)
1715: sub start_dt {
1716: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1717: my $currentstring='';
1718: if ($target eq 'web') {
1719: $currentstring = $token->[4];
1720: } elsif ($target eq 'tex') {
1721: if ($Apache::londefdef::DT_redirection) {
1722: my $data=&item_cleanup;
1723: push @Apache::londefdef::description,'\item['.$data.']';
1724: $Apache::londefdef::DT_redirection=0;
1725: } elsif ($Apache::londefdef::DD_redirection) {
1726: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1727: $Apache::londefdef::DD_redirection=0;
1728: }
1729: &Apache::lonxml::startredirection();
1730: $Apache::londefdef::DT_redirection=1;
1731: }
1732: return $currentstring;
1733: }
1734:
1735: sub end_dt {
1736: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1737: my $currentstring = '';
1738: if ($target eq 'web') {
1739: $currentstring = $token->[2];
1740: } elsif ($target eq 'tex') {
1741: my $data=&item_cleanup;
1742: push @Apache::londefdef::description,'\item['.$data.']';
1743: $Apache::londefdef::DT_redirection=0;
1744: }
1745: return $currentstring;
1746: }
1747:
1748: sub item_cleanup {
1749: my $item=&Apache::lonxml::endredirection();
1750: $item=~s/\\begin{center}//g;
1751: $item=~s/\\end{center}//g;
1752: return $item;
1753: }
1754:
1755: #-- <dd> tag (end tag optional)
1756: sub start_dd {
1757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1758: my $currentstring = '';
1759: if ($target eq 'web') {
1760: $currentstring = $token->[4];
1761: } elsif ($target eq 'tex') {
1762: if ($Apache::londefdef::DT_redirection) {
1763: my $data=&item_cleanup;
1764: push @Apache::londefdef::description,'\item['.$data.']';
1765: $Apache::londefdef::DT_redirection=0;
1766: }
1767: $Apache::londefdef::DD_redirection=1;
1768: &Apache::lonxml::startredirection();
1769: }
1770: return $currentstring;
1771: }
1772:
1773: sub end_dd {
1774: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1775: my $currentstring = '';
1776: if ($target eq 'web') {
1777: $currentstring = $token->[2];
1778: } elsif ($target eq 'tex') {
1779: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1780: $Apache::londefdef::DD_redirection=0;
1781: }
1782: return $currentstring;
1783: }
1784:
1785: #-- <table> tag (end tag required)
1786: #list of supported attributes: border,width,TeXwidth
1787: sub start_table {
1788: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1789: my ($textwidth,$currentstring)=('','');
1790: if ($target eq 'web') {
1791: $currentstring = $token->[4];
1792: } elsif ($target eq 'tex') {
1793: my $aa = {};
1794: push @Apache::londefdef::table, $aa;
1795: $Apache::londefdef::table[-1]{'row_number'} = -1;
1796: #maximum table's width (default coincides with text line length)
1797: if ($#Apache::londefdef::table==0) {
1798: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1799: $textwidth=~/(\d+\.?\d*)/;
1800: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1801: } else {
1802: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1803: #the maximum width of nested table is determined by LATeX width of parent cell
1804: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1805: } else {
1806: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1807: $textwidth=$Apache::londefdef::table[-2]{'width'};
1808: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1809: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1810: }
1811: }
1812: }
1813: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1814: if (not defined $TeXwidth) {
1815: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1816: if ($htmlwidth=~/%/) {
1817: $Apache::londefdef::table[-1]{'percent'}=1;
1818: $htmlwidth=~/(\d+)/;
1819: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1820: } else {
1821: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1822: }
1823: } elsif ($TeXwidth=~/%/) {
1824: $Apache::londefdef::table[-1]{'percent'}=1;
1825: $TeXwidth=~/(\d+)/;
1826: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1827: } else {
1828: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1829: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1830: }
1831: #table's border
1832: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1833: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1834: unless (defined $border) { $border = 0; }
1835: if ($border) {
1836: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1837: $Apache::londefdef::table[-1]{'vinc'} = '&';
1838: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1839: } else {
1840: $Apache::londefdef::table[-1]{'hinc'} = '';
1841: $Apache::londefdef::table[-1]{'vinc'} = '&';
1842: $Apache::londefdef::table[-1]{'vvinc'} = '';
1843: }
1844: if ($#Apache::londefdef::table==0) {
1845: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1846: }
1847: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1848: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1849: $Apache::londefdef::table[-1]{'objectlen'}=[];
1850: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1851: $Apache::londefdef::table[-1]{'maxlen'}=[];
1852: $Apache::londefdef::table[-1]{'minlen'}=[];
1853: $Apache::londefdef::table[-1]{'content'}=[];
1854: $Apache::londefdef::table[-1]{'align'}=[];
1855: $currentstring='\keephidden{NEW TABLE ENTRY}';
1856: }
1857: return $currentstring;
1858: }
1859:
1860: sub end_table {
1861: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1862: my $currentstring = '';
1863: if ($target eq 'web') {
1864: $currentstring = $token->[2];
1865: } elsif ($target eq 'tex') {
1866: my $inmemory = '';
1867: my $output = '';
1868: my $WARNING='';
1869: #width of columns from TeXwidth attributes
1870: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1871: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1872: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1873: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1874: }
1875: }
1876: }
1877: #free space and number of empty columns
1878: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1879: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1880: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1881: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1882: $empty_columns++;
1883: } else {
1884: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1885: }
1886: }
1887: #boundaries for contents columns
1888: my @min_len=();#columns can not be narrower
1889: my @max_len=();#maximum length of column
1890: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1891: my ($localmin,$localmax)=(0,0);
1892: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1893: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1894: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1895: }
1896: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1897: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1898: }
1899: }
1900: push @min_len, $localmin;
1901: push @max_len, $localmax;
1902: }
1903: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1904: my $localmin=0,;
1905: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1906: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1907: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1908: }
1909: }
1910: if ($max_len[$jn]<$localmin) {
1911: $max_len[$jn]=$localmin;
1912: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1913: }#object size is bigger
1914: if ($min_len[$jn]<$localmin) {
1915: $min_len[$jn]=$localmin;
1916: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1917: }#object size is bigger
1918: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1919: $min_len[$jn]=0;
1920: $max_len[$jn]=0;
1921: }
1922: }
1923: #final adjustment of column width
1924: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1925: my @adjust=();
1926: #step 1. adjustment by maximum value
1927: my $space_neeeded=0;
1928: for (my $jn=0;$jn<=$#max_len;$jn++) {
1929: $space_neeeded=$space_neeeded+$max_len[$jn];
1930: }
1931: if ($space_neeeded<=$available_space) {
1932: for (my $jn=0;$jn<=$#max_len;$jn++) {
1933: if ($fwidth[$jn]==0) {
1934: $fwidth[$jn]=$max_len[$jn];
1935: }
1936: }
1937: } else {
1938: #step 2. adjustment by minimum value (estimation)
1939: $space_neeeded=0;
1940: for (my $jn=0;$jn<=$#min_len;$jn++) {
1941: $space_neeeded+=$min_len[$jn];
1942: }
1943: if ($space_neeeded>$available_space) {
1944: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1945: for (my $jn=0;$jn<=$#max_len;$jn++) {
1946: if ($fwidth[$jn]==0) {
1947: $fwidth[$jn]=$min_len[$jn];
1948: }
1949: }
1950: #check if we have objects which can be scaled
1951: my $how_many_to_scale=0;
1952: my @to_scale=();
1953: for (my $jn=0;$jn<=$#max_len;$jn++) {
1954: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1955: $how_many_to_scale++;
1956: push @to_scale, $jn;
1957: }
1958: }
1959: if ($how_many_to_scale>0) {
1960: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1961: foreach my $jn (@to_scale) {
1962: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1963: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1964: if ($1 ne '') {
1965: my $current_length=&recalc($1);
1966: $current_length=~/(\d+\.?\d*)/;
1967: $current_length=$current_length-$space_to_adjust;
1968: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1969: }
1970: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1971: if ($1 ne '') {
1972: my $current_length=$1;
1973: $current_length=$current_length-$space_to_adjust;
1974: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
1975: }
1976: }
1977: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
1978: }
1979: }
1980: } else {
1981: #step 3. adjustment over minimal + corrections
1982: my $enlarge_coef=$available_space/$space_neeeded;
1983: my $acsessive=0;
1984: for (my $jn=0;$jn<=$#min_len;$jn++) {
1985: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1986: if ($adjust[$jn]>$max_len[$jn]) {
1987: $fwidth[$jn]=$max_len[$jn];
1988: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1989: $adjust[$jn]=0;
1990: }
1991: }
1992: if ($acsessive>0) {
1993: #we have an excess of space and can redistribute it
1994: my $notempty_columns=0;
1995: for (my $jn=0;$jn<=$#min_len;$jn++) {
1996: if ($adjust[$jn]!=0) {
1997: $notempty_columns++;
1998: }
1999: }
2000: my $per_column=$acsessive/$notempty_columns;
2001: for (my $jn=0;$jn<=$#min_len;$jn++) {
2002: if ($adjust[$jn]!=0) {
2003: $adjust[$jn]+=$per_column;
2004: $fwidth[$jn]=$adjust[$jn];
2005: }
2006: }
2007: } else {
2008: for (my $jn=0;$jn<=$#min_len;$jn++) {
2009: $fwidth[$jn]=$adjust[$jn];
2010: }
2011: }
2012: }
2013: }
2014: #use all available width if it is defined in % or as TeXwidth
2015: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2016: my $current=0;
2017: for (my $i=0;$i<=$#fwidth;$i++) {
2018: $current+=$fwidth[$i];
2019: }
2020: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2021: for (my $i=0;$i<=$#fwidth;$i++) {
2022: $fwidth[$i]*=$coef;
2023: }
2024: }
2025: #removing of empty columns if allowed
2026: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2027: if ($permission eq 'yes') {
2028: my @cleaned_table=();
2029: my @cleaned_header=();
2030: my $colind=0;
2031: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2032: if ($fwidth[$jn]!=0) {
2033: #we need to copy column
2034: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2035: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2036: $cleaned_header[$colind]=$fwidth[$jn];
2037: }
2038: $colind++;
2039: }
2040: }
2041: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2042: @fwidth=@cleaned_header;
2043: }
2044: #construct header of the table
2045: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2046: for (my $in=0;$in<=$#fwidth;$in++) {
2047: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2048: }
2049: $header_of_table .= '}';
2050: #fill the table
2051: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2052: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2053: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2054: $output.='\vspace*{-6 mm}\begin{center}';
2055: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2056: $output.=' \hfill \llap{'
2057: }
2058: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2059: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2060: $output.='\end{center}\vspace*{-6 mm}';
2061: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2062: $output.='} ';
2063: }
2064: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2065: }
2066: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2067: }
2068: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2069: if ($#Apache::londefdef::table > 0) {
2070: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2071: pop @Apache::londefdef::table;
2072: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2073: } else {
2074: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2075: pop @Apache::londefdef::table;
2076: undef @Apache::londefdef::table;
2077: }
2078: }
2079: return $currentstring;
2080: }
2081:
2082: #-- <tr> tag (end tag optional)
2083: sub start_tr {
2084: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2085: my $currentstring = '';
2086: if ($target eq 'web') {
2087: $currentstring = $token->[4];
2088: } elsif ($target eq 'tex') {
2089: $Apache::londefdef::table[-1]{'row_number'}++;
2090: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2091: if ($alignchar ne '') {
2092: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2093: } else {
2094: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2095: }
2096: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2097: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2098: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2099: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2100: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2101: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2102: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2103: }
2104: return $currentstring;
2105: }
2106:
2107: sub end_tr {
2108: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2109: my $currentstring = '';
2110: if ($target eq 'web') {
2111: $currentstring = $token->[2];
2112: } elsif ($target eq 'tex') {
2113: if ($Apache::londefdef::TD_redirection) {
2114: &end_td_tex($parstack,$parser,$safeeval);
2115: }
2116: }
2117: return $currentstring;
2118: }
2119:
2120: #-- <td> tag (end tag optional)
2121: sub start_td {
2122: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2123: my $currentstring = '';
2124: if ($target eq 'web') {
2125: $currentstring = $token->[4];
2126: } elsif ($target eq 'tex') {
2127: $Apache::londefdef::TD_redirection = 1;
2128: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2129: }
2130: return $currentstring;
2131: }
2132:
2133: sub tag_check {
2134: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2135: my @ar=@$parstack;
2136: for (my $i=$#ar-1;$i>=0;$i--) {
2137: if (lc($$tagstack[$i]) eq $good_tag) {
2138: &start_td_tex($parstack,$parser,$safeeval);
2139: last;
2140: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2141: splice @ar, $i+1;
2142: &end_td_tex(\@ar,$parser,$safeeval);
2143: &start_td_tex($parstack,$parser,$safeeval);
2144: last;
2145: }
2146: }
2147: return '';
2148: }
2149:
2150: sub start_td_tex {
2151: my ($parstack,$parser,$safeeval) = @_;
2152: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2153: if ($alignchar eq '') {
2154: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2155: }
2156: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2157: $Apache::londefdef::table[-1]{'counter_columns'}++;
2158: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2159: if (defined $TeXwidth) {
2160: my $current_length=&recalc($TeXwidth);
2161: $current_length=~/(\d+\.?\d*)/;
2162: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2163: }
2164: &Apache::lonxml::startredirection();
2165: return '';
2166: }
2167:
2168: sub end_td_tex {
2169: my ($parstack,$parser,$safeeval) = @_;
2170: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2171: my $data=&Apache::lonxml::endredirection();
2172: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2173: if (defined $TeXwidth) {
2174: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2175: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2176: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2177: } else {
2178: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2179: my $garbage_data=$data;
2180: my $fwidth=0;
2181: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2182: my $current_length=&recalc($1);
2183: $current_length=~/(\d+\.?\d*)/;
2184: if ($fwidth<$1) {$fwidth=$1;}
2185: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2186: }
2187: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2188: my $current_length=$1;
2189: if ($fwidth<$current_length) {$fwidth=$current_length;}
2190: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2191: }
2192: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2193: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2194: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2195: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2196: } else {
2197: $data=~s/^\s+(\S.*)/$1/;
2198: $data=~s/(.*\S)\s+$/$1/;
2199: $data=~s/(\s)+/$1/;
2200: my ($current_length,$min_length)=(0,0);
2201: if ($data=~/\\vskip/) {
2202: my $newdata=$data;
2203: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2204: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2205: foreach my $elementdata (@newdata) {
2206: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2207: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2208: my @words=split(/ /,$elementdata);
2209: foreach my $word (@words) {
2210: my $lengthword=2.5*&LATEX_length($word);
2211: if ($min_length<$lengthword) {$min_length=$lengthword;}
2212: }
2213: }
2214: } else {
2215: $current_length=2.5*&LATEX_length($data);
2216: my @words=split(/ /,$data);
2217: foreach my $word (@words) {
2218: my $lengthword=2*&LATEX_length($word);
2219: if ($min_length<$lengthword) {$min_length=$lengthword;}
2220: }
2221: }
2222: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2223: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2224: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2225: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2226: }
2227: }
2228: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2229: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2230: }
2231: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2232: return'';
2233: }
2234:
2235: sub end_td {
2236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2237: my $currentstring = '';
2238: if ($target eq 'web') {
2239: $currentstring = $token->[2];
2240: } elsif ($target eq 'tex') {
2241: $Apache::londefdef::TD_redirection =0;
2242: &end_td_tex($parstack,$parser,$safeeval);
2243: }
2244: return $currentstring;
2245: }
2246:
2247: #-- <th> tag (end tag optional)
2248: sub start_th {
2249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2250: my $currentstring = '';
2251: if ($target eq 'web') {
2252: $currentstring = $token->[4];
2253: } elsif ($target eq 'tex') {
2254: $Apache::londefdef::TD_redirection = 1;
2255: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2256: }
2257: return $currentstring;
2258: }
2259:
2260: sub tagg_check {
2261: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2262: my @ar=@$parstack;
2263: for (my $i=$#ar-1;$i>=0;$i--) {
2264: if (lc($$tagstack[$i]) eq $good_tag) {
2265: &start_th_tex($parstack,$parser,$safeeval);
2266: last;
2267: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2268: splice @ar, $i+1;
2269: &end_th_tex(\@ar,$parser,$safeeval);
2270: &start_th_tex($parstack,$parser,$safeeval);
2271: last;
2272: }
2273: }
2274: return '';
2275: }
2276:
2277: sub start_th_tex {
2278: my ($parstack,$parser,$safeeval) = @_;
2279: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2280: if ($alignchar eq '') {
2281: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2282: }
2283: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2284: $Apache::londefdef::table[-1]{'counter_columns'}++;
2285: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2286: if (defined $TeXwidth) {
2287: my $current_length=&recalc($TeXwidth);
2288: $current_length=~/(\d+\.?\d*)/;
2289: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2290: }
2291: &Apache::lonxml::startredirection();
2292: return '';
2293: }
2294:
2295: sub end_th_tex {
2296: my ($parstack,$parser,$safeeval) = @_;
2297: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2298: my $data=&Apache::lonxml::endredirection();
2299: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2300: if (defined $TeXwidth) {
2301: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2302: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2303: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2304: } else {
2305: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2306: my $garbage_data=$data;
2307: my $fwidth=0;
2308: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2309: my $current_length=&recalc($1);
2310: $current_length=~/(\d+\.?\d*)/;
2311: if ($fwidth<$1) {$fwidth=$1;}
2312: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2313: }
2314: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2315: my $current_length=$1;
2316: if ($fwidth<$current_length) {$fwidth=$current_length;}
2317: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2318: }
2319: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2320: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2321: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2322: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2323: } else {
2324: $data=~s/^\s+(\S.*)/$1/;
2325: $data=~s/(.*\S)\s+$/$1/;
2326: $data=~s/(\s)+/$1/;
2327: my ($current_length,$min_length)=(0,0);
2328: if ($data=~/\\vskip/) {
2329: my $newdata=$data;
2330: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2331: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2332: foreach my $elementdata (@newdata) {
2333: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2334: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2335: my @words=split(/ /,$elementdata);
2336: foreach my $word (@words) {
2337: my $lengthword=2.5*&LATEX_length($word);
2338: if ($min_length<$lengthword) {$min_length=$lengthword;}
2339: }
2340: }
2341: } else {
2342: $current_length=2.5*&LATEX_length($data);
2343: my @words=split(/ /,$data);
2344: foreach my $word (@words) {
2345: my $lengthword=2*&LATEX_length($word);
2346: if ($min_length<$lengthword) {$min_length=$lengthword;}
2347: }
2348: }
2349: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2350: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2351: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2352: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2353: }
2354: }
2355: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2356: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2357: }
2358: #make data bold
2359: $data='\textbf{'.$data.'}';
2360: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2361: return'';
2362: }
2363:
2364: sub end_th {
2365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2366: my $currentstring = '';
2367: if ($target eq 'web') {
2368: $currentstring = $token->[2];
2369: } elsif ($target eq 'tex') {
2370: $Apache::londefdef::TD_redirection =0;
2371: &end_th_tex($parstack,$parser,$safeeval);
2372: }
2373: return $currentstring;
2374: }
2375:
2376: #-- <img> tag (end tag forbidden)
2377: sub start_img {
2378: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2379: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2380: undef,1);
2381: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2382: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2383: return '';
2384: }
2385: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2386: my $currentstring = '';
2387: my $scaling = .3;
2388: if ($target eq 'web') {
2389: if ($ENV{'browser.imagesuppress'} ne 'on') {
2390: $currentstring.= $token->[4];
2391: } else {
2392: my $alttag= &Apache::lonxml::get_param
2393: ('alt',$parstack,$safeeval,undef,1);
2394: unless ($alttag) {
2395: $alttag=&Apache::lonmeta::alttag
2396: ($Apache::lonxml::pwd[-1],$src);
2397: }
2398: $currentstring.='[IMAGE: '.$alttag.']';
2399: }
2400: } elsif ($target eq 'tex') {
2401: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2402: #if uploaded restore the path
2403: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2404: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2405: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2406: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2407: }
2408: #if original gif/jpg/png file exist do following:
2409: if (-e $src) {
2410: #what is the image size?
2411: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2412: my ($file,$path)=&file_path($src);
2413: my $newsrc = $src;
2414: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2415: $file=~s/\.(gif|jpg|png)$/.eps/i;
2416: #where can we find the picture?
2417: if (-e $newsrc) {
2418: #eps counterpart for image exist
2419: if ($path) {
2420: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2421: }
2422: } else {
2423: #there is no eps counterpart for image - check for ps one
2424: $newsrc =~ s/\.eps$/\.ps/;
2425: if (-e $newsrc) {
2426: #ps counterpart for image exist
2427: $file =~ s/\.eps$/\.ps/;
2428: if ($path) {
2429: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2430: }
2431: } else {
2432: #care about eps dynamical generation
2433: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2434: }
2435: }
2436: } else {
2437: #original image file doesn't exist so check the alt attribute
2438: my $alt =
2439: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2440: unless ($alt) {
2441: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2442: }
2443:
2444: if ($alt) {
2445: $currentstring .= ' '.$alt.' ';
2446: } else {
2447: #<allow> tag will care about replication
2448: }
2449: }
2450: } elsif ($target eq 'edit') {
2451: $currentstring .=&Apache::edit::tag_start($target,$token);
2452: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2453: &Apache::edit::browse('src',undef,'alt').' '.
2454: &Apache::edit::search('src',undef,'alt').'<br />';
2455: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2456: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2457: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2458: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2459: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2460: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2461: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2462: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2463: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2464: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2465: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2466: if ($width) { $currentstring.=' width="'.$width.'" '; }
2467: if ($height) { $currentstring.=' height="'.$height.'" '; }
2468: $currentstring .= ' />';
2469: } elsif ($target eq 'modified') {
2470: my ($osrc,$owidth,$oheight)=
2471: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2472: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2473: $safeeval,'src','alt',
2474: 'TeXwidth','TeXheight',
2475: 'width','height');
2476: my ($nsrc,$nwidth,$nheight)=
2477: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2478: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2479: &image_replication($loc);
2480: my ($iwidth,$iheight);
2481: if (-e $loc) {
2482: my $image = Image::Magick->new;
2483: $image->Read($loc);
2484: ($iwidth, $iheight) = ($image->Get('width'),
2485: $image->Get('height'));
2486: }
2487: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2488: # changed image or no size specified,
2489: # if they didn't explicitly change the
2490: # width or height use the ones from the image
2491: if ($iwidth && $iheight) {
2492: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2493: $token->[2]{'width'} = $iwidth;$ctag=1;
2494: }
2495: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2496: $token->[2]{'height'}=$iheight;$ctag=1;
2497: }
2498: }
2499: }
2500: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2501: # if we don't have a width or height
2502: if ($iwidth && $cwidth && !$cheight) {
2503: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2504: }
2505: if ($iheight && $cheight && !$cwidth) {
2506: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2507: }
2508: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2509: }
2510: return $currentstring;
2511: }
2512:
2513: sub end_img {
2514: my ($target,$token) = @_;
2515: my $currentstring = '';
2516: if ($target eq 'web') {
2517: $currentstring = $token->[2];
2518: } elsif ($target eq 'tex') {
2519: $currentstring = '';
2520: }
2521: return $currentstring;
2522: }
2523:
2524: #-- <applet> tag (end tag required)
2525: sub start_applet {
2526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2527:
2528: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2529: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2530:
2531: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2532: undef,1);
2533: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2534:
2535: my $currentstring = '';
2536: if ($target eq 'web') {
2537: if ($ENV{'browser.appletsuppress'} ne 'on') {
2538: $currentstring = $token->[4];
2539: } else {
2540: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2541: $safeeval,undef,1);
2542: unless ($alttag) {
2543: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2544: $code);
2545: }
2546: $currentstring='[APPLET: '.$alttag.']';
2547: }
2548: } elsif ($target eq 'tex') {
2549: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2550: $safeeval,undef,1);
2551: unless ($alttag) {
2552: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2553: undef,1);
2554: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2555: $code);
2556: }
2557: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2558: '.}\end{center}';
2559: }
2560: return $currentstring;
2561: }
2562:
2563: sub end_applet {
2564: my ($target,$token) = @_;
2565: my $currentstring = '';
2566: if ($target eq 'web') {
2567: $currentstring = $token->[2];
2568: } elsif ($target eq 'tex') {
2569: }
2570: return $currentstring;
2571: }
2572:
2573: #-- <embed> tag (end tag optional/required)
2574: sub start_embed {
2575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2576: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2577: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2578: my $currentstring = '';
2579: if ($target eq 'web') {
2580: if ($ENV{'browser.embedsuppress'} ne 'on') {
2581: $currentstring = $token->[4];
2582: } else {
2583: my $alttag=&Apache::lonxml::get_param
2584: ('alt',$parstack,$safeeval,undef,1);
2585: unless ($alttag) {
2586: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2587: }
2588: $currentstring='[EMBED: '.$alttag.']';
2589: }
2590: } elsif ($target eq 'tex') {
2591: }
2592: return $currentstring;
2593: }
2594:
2595: sub end_embed {
2596: my ($target,$token) = @_;
2597: my $currentstring = '';
2598: if ($target eq 'web') {
2599: $currentstring = $token->[2];
2600: } elsif ($target eq 'tex') {
2601: }
2602: return $currentstring;
2603: }
2604:
2605: #-- <param> tag (end tag forbidden)
2606: sub start_param {
2607: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2608: if (&Apache::lonxml::get_param
2609: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2610: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2611: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2612: }
2613: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2614: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2615: my $currentstring = '';
2616: if ($target eq 'web') {
2617: $currentstring = $token->[4];
2618: } elsif ($target eq 'tex') {
2619: }
2620: return $currentstring;
2621: }
2622:
2623: sub end_param {
2624: my ($target,$token) = @_;
2625: my $currentstring = '';
2626: if ($target eq 'web') {
2627: $currentstring = $token->[2];
2628: } elsif ($target eq 'tex') {
2629: }
2630: return $currentstring;
2631: }
2632:
2633: #-- <allow> tag
2634: sub start_allow {
2635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2636: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2637: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2638: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2639: &Apache::lonnet::clutter($src);
2640: &image_replication($src);
2641: my $result;
2642: if ($target eq 'edit') {
2643: $result .=&Apache::edit::tag_start($target,$token);
2644: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2645: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2646: } elsif ($target eq 'modified') {
2647: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2648: $safeeval,'src');
2649: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2650: }
2651: return $result;
2652: }
2653:
2654: sub end_allow {
2655: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2656: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2657: return '';
2658: }
2659:
2660: #-- Frames (end tag required)
2661: #-- <frameset>
2662: sub start_frameset {
2663: my ($target,$token) = @_;
2664: my $currentstring = '';
2665: if ($target eq 'web') {
2666: if (!$Apache::lonxml::registered &&
2667: $ENV{'request.state'} eq 'published') {
2668: $currentstring.='<head>'.
2669: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2670: }
2671: my $onLoad='';
2672: foreach my $key (keys(%{$token->[2]})) {
2673: if ($key =~ /^onload$/i) {
2674: $onLoad.=$token->[2]->{$key}.';';
2675: delete($token->[2]->{$key});
2676: }
2677: }
2678: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2679: my $onUnload='';
2680: foreach my $key (keys(%{$token->[2]})) {
2681: if ($key =~ /^onunload$/i) {
2682: $onUnload.=$token->[2]->{$key}.';';
2683: delete($token->[2]->{$key});
2684: }
2685: }
2686: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2687: ';'.$onUnload;
2688:
2689: $currentstring .= '<'.$token->[1];
2690: foreach (keys %{$token->[2]}) {
2691: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2692: }
2693: $currentstring.='>';
2694: }
2695: return $currentstring;
2696: }
2697:
2698: sub end_frameset {
2699: my ($target,$token) = @_;
2700: my $currentstring = '';
2701: if ($target eq 'web') {
2702: $currentstring = $token->[2];
2703: }
2704: return $currentstring;
2705: }
2706:
2707: #-- <xmp> (end tag required)
2708: sub start_xmp {
2709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2710: my $currentstring = '';
2711: if ($target eq 'web') {
2712: $currentstring .= $token->[4];
2713: } elsif ($target eq 'tex') {
2714: $currentstring .= '\begin{verbatim}';
2715: }
2716: return $currentstring;
2717: }
2718:
2719: sub end_xmp {
2720: my ($target,$token) = @_;
2721: my $currentstring = '';
2722: if ($target eq 'web') {
2723: $currentstring .= $token->[2];
2724: } elsif ($target eq 'tex') {
2725: $currentstring .= '\end{verbatim}';
2726: }
2727: return $currentstring;
2728: }
2729:
2730: #-- <pre> (end tag required)
2731: sub start_pre {
2732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2733: my $currentstring = '';
2734: if ($target eq 'web') {
2735: $currentstring .= $token->[4];
2736: } elsif ($target eq 'tex') {
2737: $currentstring .= '\begin{verbatim}';
2738: }
2739: return $currentstring;
2740: }
2741:
2742: sub end_pre {
2743: my ($target,$token) = @_;
2744: my $currentstring = '';
2745: if ($target eq 'web') {
2746: $currentstring .= $token->[2];
2747: } elsif ($target eq 'tex') {
2748: $currentstring .= '\end{verbatim}';
2749: }
2750: return $currentstring;
2751: }
2752:
2753: #-- <insert>
2754: sub start_insert {
2755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2756: my $currentstring = '';
2757: if ($target eq 'web') {
2758: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2759: $currentstring .= '<b>'.$display.'</b>';;
2760: }
2761: return $currentstring;
2762: }
2763:
2764: sub end_insert {
2765: my ($target,$token) = @_;
2766: my $currentstring = '';
2767: if ($target eq 'web') {
2768: $currentstring .= '';
2769: }
2770: return $currentstring;
2771: }
2772:
2773: #-- <externallink>
2774: sub start_externallink {
2775: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2776: my $currentstring = '';
2777: if ($target eq 'web') {
2778: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2779: $currentstring .= '<b>'.$display.'</b>';;
2780: }
2781: return $currentstring;
2782: }
2783:
2784: sub end_externallink {
2785: my ($target,$token) = @_;
2786: my $currentstring = '';
2787: if ($target eq 'web') {
2788: $currentstring .= '';
2789: }
2790: return $currentstring;
2791: }
2792:
2793: #-- <blankspace heigth="">
2794: sub start_blankspace {
2795: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2796: my $currentstring = '';
2797: if ($target eq 'tex') {
2798: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2799: $currentstring .= '\vskip '.$howmuch.' ';
2800: }
2801: return $currentstring;
2802: }
2803:
2804: sub end_blankspace {
2805: my ($target,$token) = @_;
2806: my $currentstring = '';
2807: if ($target eq 'tex') {
2808: $currentstring .= '';
2809: }
2810: return $currentstring;
2811: }
2812:
2813: #-- <abbr> tag (end tag required)
2814: sub start_abbr {
2815: my ($target,$token) = @_;
2816: my $currentstring = '';
2817: if ($target eq 'web') {
2818: $currentstring = $token->[4];
2819: }
2820: return $currentstring;
2821: }
2822:
2823: sub end_abbr {
2824: my ($target,$token) = @_;
2825: my $currentstring = '';
2826: if ($target eq 'web') {
2827: $currentstring = $token->[2];
2828: }
2829: return $currentstring;
2830: }
2831:
2832: #-- <acronym> tag (end tag required)
2833: sub start_acronym {
2834: my ($target,$token) = @_;
2835: my $currentstring = '';
2836: if ($target eq 'web') {
2837: $currentstring = $token->[4];
2838: }
2839: return $currentstring;
2840: }
2841:
2842: sub end_acronym {
2843: my ($target,$token) = @_;
2844: my $currentstring = '';
2845: if ($target eq 'web') {
2846: $currentstring = $token->[2];
2847: }
2848: return $currentstring;
2849: }
2850:
2851: #-- <area> tag (end tag forbidden)
2852: sub start_area {
2853: my ($target,$token) = @_;
2854: my $currentstring = '';
2855: if ($target eq 'web') {
2856: $currentstring = $token->[4];
2857: }
2858: return $currentstring;
2859: }
2860:
2861: sub end_area {
2862: my ($target,$token) = @_;
2863: my $currentstring = '';
2864: if ($target eq 'web') {
2865: $currentstring = $token->[2];
2866: }
2867: return $currentstring;
2868: }
2869:
2870: #-- <base> tag (end tag forbidden)
2871: sub start_base {
2872: my ($target,$token) = @_;
2873: my $currentstring = '';
2874: if ($target eq 'web') {
2875: $currentstring = $token->[4];
2876: }
2877: return $currentstring;
2878: }
2879:
2880: sub end_base {
2881: my ($target,$token) = @_;
2882: my $currentstring = '';
2883: if ($target eq 'web') {
2884: $currentstring = $token->[2];
2885: }
2886: return $currentstring;
2887: }
2888:
2889: #-- <bdo> tag (end tag required)
2890: sub start_bdo {
2891: my ($target,$token) = @_;
2892: my $currentstring = '';
2893: if ($target eq 'web') {
2894: $currentstring = $token->[4];
2895: }
2896: return $currentstring;
2897: }
2898:
2899: sub end_bdo {
2900: my ($target,$token) = @_;
2901: my $currentstring = '';
2902: if ($target eq 'web') {
2903: $currentstring = $token->[2];
2904: }
2905: return $currentstring;
2906: }
2907:
2908: #-- <bgsound> tag (end tag optional)
2909: sub start_bgsound {
2910: my ($target,$token) = @_;
2911: my $currentstring = '';
2912: if ($target eq 'web') {
2913: $currentstring = $token->[4];
2914: }
2915: return $currentstring;
2916: }
2917:
2918: sub end_bgsound {
2919: my ($target,$token) = @_;
2920: my $currentstring = '';
2921: if ($target eq 'web') {
2922: $currentstring = $token->[2];
2923: }
2924: return $currentstring;
2925: }
2926:
2927: #-- <blink> tag (end tag required)
2928: sub start_blink {
2929: my ($target,$token) = @_;
2930: my $currentstring = '';
2931: if ($target eq 'web') {
2932: $currentstring = $token->[4];
2933: }
2934: return $currentstring;
2935: }
2936:
2937: sub end_blink {
2938: my ($target,$token) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'web') {
2941: $currentstring = $token->[2];
2942: }
2943: return $currentstring;
2944: }
2945:
2946: #-- <blockquote> tag (end tag required)
2947: sub start_blockquote {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'web') {
2951: $currentstring = $token->[4];
2952: }
2953: return $currentstring;
2954: }
2955:
2956: sub end_blockquote {
2957: my ($target,$token) = @_;
2958: my $currentstring = '';
2959: if ($target eq 'web') {
2960: $currentstring = $token->[2];
2961: }
2962: return $currentstring;
2963: }
2964:
2965: #-- <button> tag (end tag required)
2966: sub start_button {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[4];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: sub end_button {
2976: my ($target,$token) = @_;
2977: my $currentstring = '';
2978: if ($target eq 'web') {
2979: $currentstring = $token->[2];
2980: }
2981: return $currentstring;
2982: }
2983:
2984: #-- <caption> tag (end tag required)
2985: sub start_caption {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[4];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: sub end_caption {
2995: my ($target,$token) = @_;
2996: my $currentstring = '';
2997: if ($target eq 'web') {
2998: $currentstring = $token->[2];
2999: }
3000: return $currentstring;
3001: }
3002:
3003: #-- <col> tag (end tag forbdden)
3004: sub start_col {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[4];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: sub end_col {
3014: my ($target,$token) = @_;
3015: my $currentstring = '';
3016: if ($target eq 'web') {
3017: $currentstring = $token->[2];
3018: }
3019: return $currentstring;
3020: }
3021:
3022: #-- <colgroup> tag (end tag optional)
3023: sub start_colgroup {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[4];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: sub end_colgroup {
3033: my ($target,$token) = @_;
3034: my $currentstring = '';
3035: if ($target eq 'web') {
3036: $currentstring = $token->[2];
3037: }
3038: return $currentstring;
3039: }
3040:
3041: #-- <del> tag (end tag required)
3042: sub start_del {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[4];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: sub end_del {
3052: my ($target,$token) = @_;
3053: my $currentstring = '';
3054: if ($target eq 'web') {
3055: $currentstring = $token->[2];
3056: }
3057: return $currentstring;
3058: }
3059:
3060: #-- <fieldset> tag (end tag required)
3061: sub start_fieldset {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[4];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: sub end_fieldset {
3071: my ($target,$token) = @_;
3072: my $currentstring = '';
3073: if ($target eq 'web') {
3074: $currentstring = $token->[2];
3075: }
3076: return $currentstring;
3077: }
3078:
3079: #-- <frame> tag (end tag forbidden)
3080: sub start_frame {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[4];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: sub end_frame {
3090: my ($target,$token) = @_;
3091: my $currentstring = '';
3092: if ($target eq 'web') {
3093: $currentstring = $token->[2];
3094: }
3095: return $currentstring;
3096: }
3097:
3098: #-- <iframe> tag (end tag required)
3099: sub start_iframe {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[4];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: sub end_iframe {
3109: my ($target,$token) = @_;
3110: my $currentstring = '';
3111: if ($target eq 'web') {
3112: $currentstring = $token->[2];
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <ins> tag (end tag required)
3118: sub start_ins {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[4];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: sub end_ins {
3128: my ($target,$token) = @_;
3129: my $currentstring = '';
3130: if ($target eq 'web') {
3131: $currentstring = $token->[2];
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <isindex> tag (end tag forbidden)
3137: sub start_isindex {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[4];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: sub end_isindex {
3147: my ($target,$token) = @_;
3148: my $currentstring = '';
3149: if ($target eq 'web') {
3150: $currentstring = $token->[2];
3151: }
3152: return $currentstring;
3153: }
3154:
3155: #-- <keygen> tag (end tag forbidden)
3156: sub start_keygen {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[4];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: sub end_keygen {
3166: my ($target,$token) = @_;
3167: my $currentstring = '';
3168: if ($target eq 'web') {
3169: $currentstring = $token->[2];
3170: }
3171: return $currentstring;
3172: }
3173:
3174: #-- <label> tag
3175: sub start_label {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[4];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: sub end_label {
3185: my ($target,$token) = @_;
3186: my $currentstring = '';
3187: if ($target eq 'web') {
3188: $currentstring = $token->[2];
3189: }
3190: return $currentstring;
3191: }
3192:
3193: #-- <layer> tag (end tag required)
3194: sub start_layer {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[4];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_layer {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: $currentstring = $token->[2];
3208: }
3209: return $currentstring;
3210: }
3211:
3212: #-- <legend> tag (end tag required)
3213: sub start_legend {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[4];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: sub end_legend {
3223: my ($target,$token) = @_;
3224: my $currentstring = '';
3225: if ($target eq 'web') {
3226: $currentstring = $token->[2];
3227: }
3228: return $currentstring;
3229: }
3230:
3231: #-- <link> tag (end tag forbidden)
3232: sub start_link {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[4];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: sub end_link {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web') {
3245: $currentstring = $token->[2];
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <marquee> tag (end tag optional)
3251: sub start_marquee {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[4];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: sub end_marquee {
3261: my ($target,$token) = @_;
3262: my $currentstring = '';
3263: if ($target eq 'web') {
3264: $currentstring = $token->[2];
3265: }
3266: return $currentstring;
3267: }
3268:
3269: #-- <multicol> tag (end tag required)
3270: sub start_multicol {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[4];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: sub end_multicol {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web') {
3283: $currentstring = $token->[2];
3284: }
3285: return $currentstring;
3286: }
3287:
3288: #-- <nobr> tag (end tag required)
3289: sub start_nobr {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[4];
3294: } elsif ($target eq 'tex') {
3295: $currentstring='\mbox{';
3296: }
3297: return $currentstring;
3298: }
3299:
3300: sub end_nobr {
3301: my ($target,$token) = @_;
3302: my $currentstring = '';
3303: if ($target eq 'web') {
3304: $currentstring = $token->[2];
3305: } elsif ($target eq 'tex') {
3306: $currentstring='}';
3307: }
3308: return $currentstring;
3309: }
3310:
3311: #-- <noembed> tag (end tag required)
3312: sub start_noembed {
3313: my ($target,$token) = @_;
3314: my $currentstring = '';
3315: if ($target eq 'web') {
3316: $currentstring = $token->[4];
3317: }
3318: return $currentstring;
3319: }
3320:
3321: sub end_noembed {
3322: my ($target,$token) = @_;
3323: my $currentstring = '';
3324: if ($target eq 'web') {
3325: $currentstring = $token->[2];
3326: }
3327: return $currentstring;
3328: }
3329:
3330: #-- <noframes> tag (end tag required)
3331: sub start_noframes {
3332: my ($target,$token) = @_;
3333: my $currentstring = '';
3334: if ($target eq 'web') {
3335: $currentstring = $token->[4];
3336: }
3337: return $currentstring;
3338: }
3339:
3340: sub end_noframes {
3341: my ($target,$token) = @_;
3342: my $currentstring = '';
3343: if ($target eq 'web') {
3344: $currentstring = $token->[2];
3345: }
3346: return $currentstring;
3347: }
3348:
3349: #-- <nolayer> tag (end tag required)
3350: sub start_nolayer {
3351: my ($target,$token) = @_;
3352: my $currentstring = '';
3353: if ($target eq 'web') {
3354: $currentstring = $token->[4];
3355: }
3356: return $currentstring;
3357: }
3358:
3359: sub end_nolayer {
3360: my ($target,$token) = @_;
3361: my $currentstring = '';
3362: if ($target eq 'web') {
3363: $currentstring = $token->[2];
3364: }
3365: return $currentstring;
3366: }
3367:
3368: #-- <noscript> tag (end tag required)
3369: sub start_noscript {
3370: my ($target,$token) = @_;
3371: my $currentstring = '';
3372: if ($target eq 'web') {
3373: $currentstring = $token->[4];
3374: }
3375: return $currentstring;
3376: }
3377:
3378: sub end_noscript {
3379: my ($target,$token) = @_;
3380: my $currentstring = '';
3381: if ($target eq 'web') {
3382: $currentstring = $token->[2];
3383: }
3384: return $currentstring;
3385: }
3386:
3387: #-- <object> tag (end tag required)
3388: sub start_object {
3389: my ($target,$token) = @_;
3390: my $currentstring = '';
3391: if ($target eq 'web') {
3392: $currentstring = $token->[4];
3393: }
3394: return $currentstring;
3395: }
3396:
3397: sub end_object {
3398: my ($target,$token) = @_;
3399: my $currentstring = '';
3400: if ($target eq 'web') {
3401: $currentstring = $token->[2];
3402: }
3403: return $currentstring;
3404: }
3405:
3406: #-- <optgroup> tag (end tag required)
3407: sub start_optgroup {
3408: my ($target,$token) = @_;
3409: my $currentstring = '';
3410: if ($target eq 'web') {
3411: $currentstring = $token->[4];
3412: }
3413: return $currentstring;
3414: }
3415:
3416: sub end_optgroup {
3417: my ($target,$token) = @_;
3418: my $currentstring = '';
3419: if ($target eq 'web') {
3420: $currentstring = $token->[2];
3421: }
3422: return $currentstring;
3423: }
3424:
3425: #-- <samp> tag (end tag required)
3426: sub start_samp {
3427: my ($target,$token) = @_;
3428: my $currentstring = '';
3429: if ($target eq 'web') {
3430: $currentstring = $token->[4];
3431: } elsif ($target eq 'tex') {
3432: $currentstring='\texttt{';
3433: }
3434: return $currentstring;
3435: }
3436:
3437: sub end_samp {
3438: my ($target,$token) = @_;
3439: my $currentstring = '';
3440: if ($target eq 'web') {
3441: $currentstring = $token->[2];
3442: } elsif ($target eq 'tex') {
3443: $currentstring='}';
3444: }
3445: return $currentstring;
3446: }
3447:
3448: #-- <server> tag
3449: sub start_server {
3450: my ($target,$token) = @_;
3451: my $currentstring = '';
3452: if ($target eq 'web') {
3453: $currentstring = $token->[4];
3454: }
3455: return $currentstring;
3456: }
3457:
3458: sub end_server {
3459: my ($target,$token) = @_;
3460: my $currentstring = '';
3461: if ($target eq 'web') {
3462: $currentstring = $token->[2];
3463: }
3464: return $currentstring;
3465: }
3466:
3467: #-- <spacer> tag (end tag forbidden)
3468: sub start_spacer {
3469: my ($target,$token) = @_;
3470: my $currentstring = '';
3471: if ($target eq 'web') {
3472: $currentstring = $token->[4];
3473: }
3474: return $currentstring;
3475: }
3476:
3477: sub end_spacer {
3478: my ($target,$token) = @_;
3479: my $currentstring = '';
3480: if ($target eq 'web') {
3481: $currentstring = $token->[2];
3482: }
3483: return $currentstring;
3484: }
3485:
3486: #-- <span> tag (end tag required)
3487: sub start_span {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web') {
3491: $currentstring = $token->[4];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: sub end_span {
3497: my ($target,$token) = @_;
3498: my $currentstring = '';
3499: if ($target eq 'web') {
3500: $currentstring = $token->[2];
3501: }
3502: return $currentstring;
3503: }
3504:
3505: #-- <tbody> tag (end tag optional)
3506: sub start_tbody {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web') {
3510: $currentstring = $token->[4];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: sub end_tbody {
3516: my ($target,$token) = @_;
3517: my $currentstring = '';
3518: if ($target eq 'web') {
3519: $currentstring = $token->[2];
3520: }
3521: return $currentstring;
3522: }
3523:
3524: #-- <tfoot> tag (end tag optional)
3525: sub start_tfoot {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web') {
3529: $currentstring = $token->[4];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: sub end_tfoot {
3535: my ($target,$token) = @_;
3536: my $currentstring = '';
3537: if ($target eq 'web') {
3538: $currentstring = $token->[2];
3539: }
3540: return $currentstring;
3541: }
3542:
3543: #-- <thead> tag (end tag optional)
3544: sub start_thead {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web') {
3548: $currentstring = $token->[4];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: sub end_thead {
3554: my ($target,$token) = @_;
3555: my $currentstring = '';
3556: if ($target eq 'web') {
3557: $currentstring = $token->[2];
3558: }
3559: return $currentstring;
3560: }
3561:
3562: #-- <var> tag
3563: sub start_var {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web') {
3567: $currentstring = $token->[4];
3568: } elsif ($target eq 'tex') {
3569: $currentstring = '\textit{';
3570: }
3571: return $currentstring;
3572: }
3573:
3574: sub end_var {
3575: my ($target,$token) = @_;
3576: my $currentstring = '';
3577: if ($target eq 'web') {
3578: $currentstring = $token->[2];
3579: } elsif ($target eq 'tex') {
3580: $currentstring = '}';
3581: }
3582: return $currentstring;
3583: }
3584:
3585: #-- <wbr> tag (end tag forbidden)
3586: sub start_wbr {
3587: my ($target,$token) = @_;
3588: my $currentstring = '';
3589: if ($target eq 'web') {
3590: $currentstring = $token->[4];
3591: }
3592: return $currentstring;
3593: }
3594:
3595: sub end_wbr {
3596: my ($target,$token) = @_;
3597: my $currentstring = '';
3598: if ($target eq 'web') {
3599: $currentstring = $token->[2];
3600: }
3601: return $currentstring;
3602: }
3603:
3604: #-- <hideweboutput> tag
3605: sub start_hideweboutput {
3606: my ($target,$token) = @_;
3607: if ($target eq 'web') {
3608: &Apache::lonxml::startredirection();
3609: }
3610: return '';
3611: }
3612:
3613: sub end_hideweboutput {
3614: my ($target,$token) = @_;
3615: my $currentstring = '';
3616: if ($target eq 'web') {
3617: $currentstring = &Apache::lonxml::endredirection();
3618: }
3619: return '';
3620: }
3621:
3622:
3623: sub image_replication {
3624: my $src = shift;
3625: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3626: #replicates eps or ps
3627: my $epssrc = my $pssrc = $src;
3628: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3629: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3630: if (not -e $epssrc && not -e $pssrc) {
3631: my $result=&Apache::lonnet::repcopy($epssrc);
3632: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3633: }
3634: return '';
3635: }
3636:
3637: sub image_size {
3638: my ($src,$scaling,$parstack,$safeeval)=@_;
3639: #size of image from gif/jpg/jpeg/png
3640: my $image = Image::Magick->new;
3641: my $current_figure = $image->Read($src);
3642: my $width_param = $image->Get('width') * $scaling;;
3643: my $height_param = $image->Get('height') * $scaling;;
3644: undef $image;
3645: #do we have any specified LaTeX size of the picture?
3646: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3647: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3648: #do we have any specified web size of the picture?
3649: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3650: undef,1);
3651: if ($TeXwidth ne '') {
3652: if ($TeXwidth=~/(\d+)\s*\%/) {
3653: $width_param = $1*$ENV{'form.textwidth'}/100;
3654: } else {
3655: $width_param = $TeXwidth;
3656: }
3657: } elsif ($TeXheight ne '') {
3658: $width_param = $TeXheight/$height_param*$width_param;
3659: } elsif ($width ne '') {
3660: $width_param = $width*$scaling;
3661: }
3662: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3663: return $width_param;
3664: }
3665:
3666: sub eps_generation {
3667: my ($src,$file,$width_param) = @_;
3668: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3669: my $temp_file = Apache::File->new('>>'.$filename);
3670: print $temp_file "$src\n";
3671: my $newsrc = $src;
3672: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3673: $newsrc=~s/\/home\/httpd\/html\/res//;
3674: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3675: $newsrc=~s/\/\.\//\//;
3676: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3677: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3678: $newsrc=~s/\/home\/httpd\/lonUsers//;
3679: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3680: }
3681: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3682: }
3683:
3684: sub file_path {
3685: my $src=shift;
3686: my ($file,$path);
3687: if ($src =~ m!(.*)/([^/]*)$!) {
3688: $file = $2;
3689: $path = $1.'/';
3690: }
3691: return $file,$path;
3692: }
3693:
3694: sub recalc {
3695: my $argument = shift;
3696: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3697: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3698: my $value=$1;
3699: my $units=$2;
3700: if ($units eq 'cm') {
3701: $value*=10;
3702: } elsif ($units eq 'in') {
3703: $value*=25.4;
3704: } elsif ($units eq 'pc') {
3705: $value*=(25.4*12/72.27);
3706: } elsif ($units eq 'pt') {
3707: $value*=(25.4/72.27);
3708: }
3709: return $value.' mm';
3710: }
3711:
3712: sub LATEX_length {
3713: my $garbage=shift;
3714: $garbage=~s/^\s+$//;
3715: $garbage=~s/^\s+(\S.*)/$1/;#space before
3716: $garbage=~s/(.*\S)\s+$/$1/;#space after
3717: $garbage=~s/(\s)+/$1/;#only one space
3718: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3719: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3720: $garbage=~s/([^\\])\$/$1/g;#$
3721: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3722: $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;
3723: $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;
3724: $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;
3725: $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;
3726: $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;
3727: $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;
3728: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3729: #remove some other LaTeX command
3730: $garbage=~s|\\(\w+)\\|\\|g;
3731: $garbage=~s|\\(\w+)(\s*)|$2|g;
3732: $garbage=~s|\+|11|g;
3733: my $value=length($garbage);
3734: return $value;
3735: }
3736:
3737:
3738:
3739:
3740: 1;
3741: __END__
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