1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.234 2004/08/19 20:20:40 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $inside ='\\documentstyle{article}'.$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: $currentstring .= '\documentclass[letterpaper]{book}';
158: if ($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,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
180: my $currentstring = '';
181: if ($target eq 'web') {
182: $currentstring = &Apache::lonxml::xmlend($target,$parser);
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 (not defined $align) {
1138: $currentstring.='\strut\\\\\strut ';
1139: } elsif ($align eq 'center') {
1140: $currentstring .= '\end{center}';
1141: } elsif ($align eq 'right') {
1142: $currentstring .= '}}';
1143: } elsif ($align eq 'left') {
1144: $currentstring .= '}\hfill}';
1145: }
1146: }
1147: return $currentstring;
1148: }
1149:
1150: #-- <br> tag (end tag forbidden)
1151: sub start_br {
1152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1153: my $currentstring = '';
1154: if ($target eq 'web') {
1155: $currentstring .= $token->[4];
1156: } elsif ($target eq 'tex') {
1157: my @tempo=@$tagstack;
1158: my $signal=0;
1159: for (my $i=$#tempo;$i>=0;$i--) {
1160: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1161: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1162: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1163: $signal=1;
1164: last;
1165: }
1166: }
1167: if ($signal) {
1168: $currentstring .= ' \vskip 0 mm ';
1169: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1170: $currentstring .= '\strut \\\\ \strut ';
1171: }
1172: }
1173: return $currentstring;
1174: }
1175:
1176: sub end_br {
1177: my ($target,$token) = @_;
1178: my $currentstring = '';
1179: if ($target eq 'web') {
1180: $currentstring .= $token->[2];
1181: }
1182: return $currentstring;
1183: }
1184:
1185: #-- <big> tag (end tag required)
1186: sub start_big {
1187: my ($target,$token) = @_;
1188: my $currentstring = '';
1189: if ($target eq 'web') {
1190: $currentstring .= $token->[4];
1191: } elsif ($target eq 'tex') {
1192: $currentstring .= '{\large ';
1193: }
1194: return $currentstring;
1195: }
1196:
1197: sub end_big {
1198: my ($target,$token) = @_;
1199: my $currentstring = '';
1200: if ($target eq 'web') {
1201: $currentstring .= $token->[2];
1202: } elsif ($target eq 'tex') {
1203: $currentstring .= '}';
1204: }
1205: return $currentstring;
1206: }
1207:
1208: #-- <small> tag (end tag required)
1209: sub start_small {
1210: my ($target,$token) = @_;
1211: my $currentstring = '';
1212: if ($target eq 'web') {
1213: $currentstring .= $token->[4];
1214: } elsif ($target eq 'tex') {
1215: $currentstring .= '{\footnotesize ';
1216: }
1217: return $currentstring;
1218: }
1219:
1220: sub end_small {
1221: my ($target,$token) = @_;
1222: my $currentstring = '';
1223: if ($target eq 'web') {
1224: $currentstring .= $token->[2];
1225: } elsif ($target eq 'tex') {
1226: $currentstring .= '}';
1227: }
1228: return $currentstring;
1229: }
1230:
1231: #-- <basefont> tag (end tag forbidden)
1232: sub start_basefont {
1233: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1234: my $currentstring = '';
1235: if ($target eq 'web') {
1236: $currentstring = $token->[4];
1237: } elsif ($target eq 'tex') {
1238: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1239: if (defined $basesize) {
1240: $currentstring = '{\\'.$basesize.' ';
1241: }
1242: }
1243: return $currentstring;
1244: }
1245:
1246: sub end_basefont {
1247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1248: my $currentstring = '';
1249: if ($target eq 'web') {
1250: $currentstring = $token->[4];
1251: } elsif ($target eq 'tex') {
1252: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1253: if (defined $basesize) {
1254: $currentstring = '}';
1255: }
1256: }
1257: return $currentstring;
1258: }
1259:
1260: #-- <font> tag (end tag required)
1261: sub start_font {
1262: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1263: my $currentstring = '';
1264: if ($target eq 'web') {
1265: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1266: if ($face!~/symbol/i) {
1267: if (($ENV{'browser.fontenhance'} eq 'on') ||
1268: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1269: }
1270: $currentstring = $token->[4];
1271: } elsif ($target eq 'tex') {
1272: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1273: if (defined $fontsize) {
1274: $currentstring = '{\\'.$fontsize.' ';
1275: }
1276: }
1277: return $currentstring;
1278: }
1279:
1280: sub end_font {
1281: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1282: my $currentstring = '';
1283: if ($target eq 'web') {
1284: $currentstring = $token->[2];
1285: } elsif ($target eq 'tex') {
1286: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1287: if (defined $fontsize) {
1288: $currentstring = '}';
1289: }
1290: }
1291: return $currentstring;
1292: }
1293:
1294: #-- <strike> tag (end tag required)
1295: sub start_strike {
1296: my ($target,$token) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web') {
1299: $currentstring .= $token->[4];
1300: } elsif ($target eq 'tex') {
1301: &Apache::lonxml::startredirection();
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_strike {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web') {
1310: $currentstring .= $token->[2];
1311: } elsif ($target eq 'tex') {
1312: $currentstring=&Apache::lonxml::endredirection();
1313: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1314: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1315: $currentstring=~s/(\S)\s*$/$1\}/;
1316: }
1317: return $currentstring;
1318: }
1319:
1320: #-- <s> tag (end tag required)
1321: sub start_s {
1322: my ($target,$token) = @_;
1323: my $currentstring = '';
1324: if ($target eq 'web') {
1325: $currentstring .= $token->[4];
1326: } elsif ($target eq 'tex') {
1327: &Apache::lonxml::startredirection();
1328: }
1329: return $currentstring;
1330: }
1331:
1332: sub end_s {
1333: my ($target,$token) = @_;
1334: my $currentstring = '';
1335: if ($target eq 'web') {
1336: $currentstring .= $token->[2];
1337: } elsif ($target eq 'tex') {
1338: $currentstring=&Apache::lonxml::endredirection();
1339: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1340: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1341: $currentstring=~s/(\S)\s*$/$1\}/;
1342: }
1343: return $currentstring;
1344: }
1345:
1346: #-- <sub> tag (end tag required)
1347: sub start_sub {
1348: my ($target,$token) = @_;
1349: my $currentstring = '';
1350: if ($target eq 'web') {
1351: $currentstring .= $token->[4];
1352: } elsif ($target eq 'tex') {
1353: $currentstring .= '\ensuremath{_{';
1354: }
1355: return $currentstring;
1356: }
1357:
1358: sub end_sub {
1359: my ($target,$token) = @_;
1360: my $currentstring = '';
1361: if ($target eq 'web') {
1362: $currentstring .= $token->[2];
1363: } elsif ($target eq 'tex') {
1364: $currentstring .= '}}';
1365: }
1366: return $currentstring;
1367: }
1368:
1369: #-- <sup> tag (end tag required)
1370: sub start_sup {
1371: my ($target,$token) = @_;
1372: my $currentstring = '';
1373: if ($target eq 'web') {
1374: $currentstring .= $token->[4];
1375: } elsif ($target eq 'tex') {
1376: $currentstring .= '\ensuremath{^{';
1377: }
1378: return $currentstring;
1379: }
1380:
1381: sub end_sup {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web') {
1385: $currentstring .= $token->[2];
1386: } elsif ($target eq 'tex') {
1387: $currentstring .= '}}';
1388: }
1389: return $currentstring;
1390: }
1391:
1392: #-- <hr> tag (end tag forbidden)
1393: sub start_hr {
1394: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1395: my $currentstring = '';
1396: if ($target eq 'web') {
1397: $currentstring .= $token->[4];
1398: } elsif ($target eq 'tex') {
1399: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1400: if (defined $LaTeXwidth) {
1401: if ($LaTeXwidth=~/^%/) {
1402: substr($LaTeXwidth,0,1)='';
1403: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1404: }
1405: } else {
1406: $LaTeXwidth ='0.9\textwidth';
1407: }
1408: my ($pre,$post);
1409: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1410: if (($align eq 'center') || (not defined $align)) {
1411: $pre=''; $post='';
1412: } elsif ($align eq 'left') {
1413: $pre='\rlap{'; $post='} \hfill';
1414: } elsif ($align eq 'right') {
1415: $pre=' \hfill \llap{'; $post='}';
1416: }
1417: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1418: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1419: }
1420: return $currentstring;
1421: }
1422:
1423: sub end_hr {
1424: my ($target,$token) = @_;
1425: my $currentstring = '';
1426: if ($target eq 'web') {
1427: $currentstring .= $token->[2];
1428: }
1429: return $currentstring;
1430: }
1431:
1432: #-- <div> tag (end tag required)
1433: sub start_div {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web') {
1437: $currentstring .= $token->[4];
1438: }
1439: return $currentstring;
1440: }
1441:
1442: sub end_div {
1443: my ($target,$token) = @_;
1444: my $currentstring = '';
1445: if ($target eq 'web') {
1446: $currentstring .= $token->[2];
1447: }
1448: return $currentstring;
1449: }
1450:
1451: #-- <a> tag (end tag required)
1452: sub start_a {
1453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web') {
1456: $currentstring .= $token->[4];
1457: } elsif ($target eq 'tex') {
1458: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1459: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1460: if ($a=~/\S/) {
1461: $a=~s/([^\\])%/$1\\\%/g;
1462: $currentstring .= '\ref{URI: '.$a.'}';
1463: } elsif ($b=~/\S/) {
1464: $currentstring .= '\ref{Anchor: '.$b.'}';
1465: } else {
1466: $currentstring.='';
1467: }
1468: }
1469: return $currentstring;
1470: }
1471:
1472: sub end_a {
1473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1474: my $currentstring = '';
1475: if ($target eq 'web') {
1476: $currentstring .= $token->[2];
1477: }
1478: return $currentstring;
1479: }
1480:
1481: #-- <li> tag (end tag optional)
1482: sub start_li {
1483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web') {
1486: $currentstring = $token->[4];
1487: } elsif ($target eq 'tex') {
1488: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1489: if ($type=~/circle/) {
1490: $currentstring .= ' \item[o] ';
1491: } elsif ($type=~/square/) {
1492: $currentstring .= ' \item[$\Box$] ';
1493: } elsif ($type ne '') {
1494: $currentstring .= ' \item['.$type.'] ';
1495: } else {
1496: $currentstring .= ' \item ';
1497: }
1498: }
1499: return $currentstring;
1500: }
1501:
1502: sub end_li {
1503: my ($target,$token) = @_;
1504: my $currentstring = '';
1505: if ($target eq 'web') {
1506: $currentstring = $token->[2];
1507: }
1508: return $currentstring;
1509: }
1510:
1511: #-- <u> tag (end tag required)
1512: sub start_u {
1513: my ($target,$token) = @_;
1514: my $currentstring = '';
1515: if ($target eq 'web') {
1516: $currentstring .= $token->[4];
1517: } elsif ($target eq 'tex') {
1518: &Apache::lonxml::startredirection();
1519: }
1520: return $currentstring;
1521: }
1522:
1523: sub end_u {
1524: my ($target,$token) = @_;
1525: my $currentstring = '';
1526: if ($target eq 'web') {
1527: $currentstring .= $token->[2];
1528: } elsif ($target eq 'tex') {
1529: $currentstring=&Apache::lonxml::endredirection();
1530: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1531: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1532: $currentstring=~s/(\S)\s*$/$1\}/;
1533: }
1534: return $currentstring;
1535: }
1536:
1537: #-- <ul> tag (end tag required)
1538: sub start_ul {
1539: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1540: my $currentstring = '';
1541: if ($target eq 'web') {
1542: $currentstring = $token->[4];
1543: } elsif ($target eq 'tex') {
1544: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1545: if ($TeXtype eq 'disc') {
1546: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1547: '\renewcommand{\labelitemii}{$\bullet$}'.
1548: '\renewcommand{\labelitemiii}{$\bullet$}'.
1549: '\renewcommand{\labelitemiv}{$\bullet$}';
1550: } elsif ($TeXtype eq 'circle') {
1551: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1552: '\renewcommand{\labelitemii}{$\circ$}'.
1553: '\renewcommand{\labelitemiii}{$\circ$}'.
1554: '\renewcommand{\labelitemiv}{$\circ$}';
1555: } elsif ($TeXtype eq 'square') {
1556: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1557: '\renewcommand{\labelitemii}{$\diamond$}'.
1558: '\renewcommand{\labelitemiii}{$\diamond$}'.
1559: '\renewcommand{\labelitemiv}{$\diamond$}';
1560: }
1561: $currentstring .= '\strut \begin{itemize}';
1562: }
1563: return $currentstring;
1564: }
1565:
1566: sub end_ul {
1567: my ($target,$token) = @_;
1568: my $currentstring = '';
1569: if ($target eq 'web') {
1570: $currentstring = $token->[2];
1571: } elsif ($target eq 'tex') {
1572: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1573: '\renewcommand{\labelitemii}{$\bullet$}'.
1574: '\renewcommand{\labelitemiii}{$\bullet$}'.
1575: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1576: }
1577: return $currentstring;
1578: }
1579:
1580: #-- <menu> tag (end tag required)
1581: sub start_menu {
1582: my ($target,$token) = @_;
1583: my $currentstring = '';
1584: if ($target eq 'web') {
1585: $currentstring = $token->[4];
1586: } elsif ($target eq 'tex') {
1587: $currentstring = " \\begin{itemize} ";
1588: }
1589: return $currentstring;
1590: }
1591:
1592: sub end_menu {
1593: my ($target,$token) = @_;
1594: my $currentstring = '';
1595: if ($target eq 'web') {
1596: $currentstring = $token->[2];
1597: } elsif ($target eq 'tex') {
1598: $currentstring = " \\end{itemize}";
1599: }
1600: return $currentstring;
1601: }
1602:
1603: #-- <dir> tag (end tag required)
1604: sub start_dir {
1605: my ($target,$token) = @_;
1606: my $currentstring = '';
1607: if ($target eq 'web') {
1608: $currentstring = $token->[4];
1609: } elsif ($target eq 'tex') {
1610: $currentstring = " \\begin{itemize} ";
1611: }
1612: return $currentstring;
1613: }
1614:
1615: sub end_dir {
1616: my ($target,$token) = @_;
1617: my $currentstring = '';
1618: if ($target eq 'web') {
1619: $currentstring = $token->[2];
1620: } elsif ($target eq 'tex') {
1621: $currentstring = " \\end{itemize}";
1622: }
1623: return $currentstring;
1624: }
1625:
1626: #-- <ol> tag (end tag required)
1627: sub start_ol {
1628: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1629: my $currentstring = '';
1630: if ($target eq 'web') {
1631: $currentstring = $token->[4];
1632: } elsif ($target eq 'tex') {
1633: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1634: if ($type eq '1') {
1635: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1636: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1637: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1638: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1639: } elsif ($type eq 'A') {
1640: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1641: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1642: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1643: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1644: } elsif ($type eq 'a') {
1645: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1646: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1647: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1648: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1649: } elsif ($type eq 'i') {
1650: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1651: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1652: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1653: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1654: } elsif ($type eq 'I') {
1655: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1656: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1657: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1658: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1659: }
1660: $currentstring .= '\strut \begin{enumerate}';
1661: }
1662: return $currentstring;
1663: }
1664:
1665: sub end_ol {
1666: my ($target,$token) = @_;
1667: my $currentstring = '';
1668: if ($target eq 'web') {
1669: $currentstring = $token->[2];
1670: } elsif ($target eq 'tex') {
1671: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1672: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1673: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1674: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1675: }
1676: return $currentstring;
1677: }
1678:
1679: #-- <dl> tag (end tag required)
1680: sub start_dl {
1681: my ($target,$token) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web') {
1684: $currentstring = $token->[4];
1685: } elsif ($target eq 'tex') {
1686: $currentstring = '\begin{description}';
1687: @Apache::londefdef::description=();
1688: $Apache::londefdef::DD_redirection=0;
1689: $Apache::londefdef::DT_redirection=0;
1690: }
1691: return $currentstring;
1692: }
1693:
1694: sub end_dl {
1695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1696: my $currentstring = '';
1697: if ($target eq 'web') {
1698: $currentstring = $token->[2];
1699: } elsif ($target eq 'tex') {
1700: if ($Apache::londefdef::DT_redirection) {
1701: my $data=&item_cleanup;
1702: push @Apache::londefdef::description,'\item['.$data.']';
1703: $Apache::londefdef::DT_redirection=0;
1704: } elsif ($Apache::londefdef::DD_redirection) {
1705: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1706: }
1707: foreach my $element (@Apache::londefdef::description) {
1708: $currentstring.=' '.$element.' ';
1709: }
1710: @Apache::londefdef::description=();
1711: $currentstring.='\end{description}';
1712: }
1713: return $currentstring;
1714: }
1715:
1716: #-- <dt> tag (end tag optional)
1717: sub start_dt {
1718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1719: my $currentstring='';
1720: if ($target eq 'web') {
1721: $currentstring = $token->[4];
1722: } elsif ($target eq 'tex') {
1723: if ($Apache::londefdef::DT_redirection) {
1724: my $data=&item_cleanup;
1725: push @Apache::londefdef::description,'\item['.$data.']';
1726: $Apache::londefdef::DT_redirection=0;
1727: } elsif ($Apache::londefdef::DD_redirection) {
1728: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1729: $Apache::londefdef::DD_redirection=0;
1730: }
1731: &Apache::lonxml::startredirection();
1732: $Apache::londefdef::DT_redirection=1;
1733: }
1734: return $currentstring;
1735: }
1736:
1737: sub end_dt {
1738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1739: my $currentstring = '';
1740: if ($target eq 'web') {
1741: $currentstring = $token->[2];
1742: } elsif ($target eq 'tex') {
1743: my $data=&item_cleanup;
1744: push @Apache::londefdef::description,'\item['.$data.']';
1745: $Apache::londefdef::DT_redirection=0;
1746: }
1747: return $currentstring;
1748: }
1749:
1750: sub item_cleanup {
1751: my $item=&Apache::lonxml::endredirection();
1752: $item=~s/\\begin{center}//g;
1753: $item=~s/\\end{center}//g;
1754: return $item;
1755: }
1756:
1757: #-- <dd> tag (end tag optional)
1758: sub start_dd {
1759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1760: my $currentstring = '';
1761: if ($target eq 'web') {
1762: $currentstring = $token->[4];
1763: } elsif ($target eq 'tex') {
1764: if ($Apache::londefdef::DT_redirection) {
1765: my $data=&item_cleanup;
1766: push @Apache::londefdef::description,'\item['.$data.']';
1767: $Apache::londefdef::DT_redirection=0;
1768: }
1769: $Apache::londefdef::DD_redirection=1;
1770: &Apache::lonxml::startredirection();
1771: }
1772: return $currentstring;
1773: }
1774:
1775: sub end_dd {
1776: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1777: my $currentstring = '';
1778: if ($target eq 'web') {
1779: $currentstring = $token->[2];
1780: } elsif ($target eq 'tex') {
1781: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1782: $Apache::londefdef::DD_redirection=0;
1783: }
1784: return $currentstring;
1785: }
1786:
1787: #-- <table> tag (end tag required)
1788: #list of supported attributes: border,width,TeXwidth
1789: sub start_table {
1790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1791: my ($textwidth,$currentstring)=('','');
1792: if ($target eq 'web') {
1793: $currentstring = $token->[4];
1794: } elsif ($target eq 'tex') {
1795: my $aa = {};
1796: push @Apache::londefdef::table, $aa;
1797: $Apache::londefdef::table[-1]{'row_number'} = -1;
1798: #maximum table's width (default coincides with text line length)
1799: if ($#Apache::londefdef::table==0) {
1800: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1801: $textwidth=~/(\d+\.?\d*)/;
1802: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1803: } else {
1804: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1805: #the maximum width of nested table is determined by LATeX width of parent cell
1806: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1807: } else {
1808: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1809: $textwidth=$Apache::londefdef::table[-2]{'width'};
1810: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1811: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1812: }
1813: }
1814: }
1815: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1816: if (not defined $TeXwidth) {
1817: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1818: if ($htmlwidth=~/%/) {
1819: $Apache::londefdef::table[-1]{'percent'}=1;
1820: $htmlwidth=~/(\d+)/;
1821: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1822: } else {
1823: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1824: }
1825: } elsif ($TeXwidth=~/%/) {
1826: $Apache::londefdef::table[-1]{'percent'}=1;
1827: $TeXwidth=~/(\d+)/;
1828: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1829: } else {
1830: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1831: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1832: }
1833: #table's border
1834: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1835: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1836: unless (defined $border) { $border = 0; }
1837: if ($border) {
1838: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1839: $Apache::londefdef::table[-1]{'vinc'} = '&';
1840: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1841: } else {
1842: $Apache::londefdef::table[-1]{'hinc'} = '';
1843: $Apache::londefdef::table[-1]{'vinc'} = '&';
1844: $Apache::londefdef::table[-1]{'vvinc'} = '';
1845: }
1846: if ($#Apache::londefdef::table==0) {
1847: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1848: }
1849: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1850: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1851: $Apache::londefdef::table[-1]{'objectlen'}=[];
1852: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1853: $Apache::londefdef::table[-1]{'maxlen'}=[];
1854: $Apache::londefdef::table[-1]{'minlen'}=[];
1855: $Apache::londefdef::table[-1]{'content'}=[];
1856: $Apache::londefdef::table[-1]{'align'}=[];
1857: $currentstring='\keephidden{NEW TABLE ENTRY}';
1858: }
1859: return $currentstring;
1860: }
1861:
1862: sub end_table {
1863: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1864: my $currentstring = '';
1865: if ($target eq 'web') {
1866: $currentstring = $token->[2];
1867: } elsif ($target eq 'tex') {
1868: my $inmemory = '';
1869: my $output = '';
1870: my $WARNING='';
1871: #width of columns from TeXwidth attributes
1872: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1873: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1874: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1875: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1876: }
1877: }
1878: }
1879: #free space and number of empty columns
1880: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1881: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1882: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1883: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1884: $empty_columns++;
1885: } else {
1886: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1887: }
1888: }
1889: #boundaries for contents columns
1890: my @min_len=();#columns can not be narrower
1891: my @max_len=();#maximum length of column
1892: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1893: my ($localmin,$localmax)=(0,0);
1894: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1895: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1896: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1897: }
1898: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1899: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1900: }
1901: }
1902: push @min_len, $localmin;
1903: push @max_len, $localmax;
1904: }
1905: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1906: my $localmin=0,;
1907: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1908: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1909: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1910: }
1911: }
1912: if ($max_len[$jn]<$localmin) {
1913: $max_len[$jn]=$localmin;
1914: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1915: }#object size is bigger
1916: if ($min_len[$jn]<$localmin) {
1917: $min_len[$jn]=$localmin;
1918: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1919: }#object size is bigger
1920: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1921: $min_len[$jn]=0;
1922: $max_len[$jn]=0;
1923: }
1924: }
1925: #final adjustment of column width
1926: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1927: my @adjust=();
1928: #step 1. adjustment by maximum value
1929: my $space_neeeded=0;
1930: for (my $jn=0;$jn<=$#max_len;$jn++) {
1931: $space_neeeded=$space_neeeded+$max_len[$jn];
1932: }
1933: if ($space_neeeded<=$available_space) {
1934: for (my $jn=0;$jn<=$#max_len;$jn++) {
1935: if ($fwidth[$jn]==0) {
1936: $fwidth[$jn]=$max_len[$jn];
1937: }
1938: }
1939: } else {
1940: #step 2. adjustment by minimum value (estimation)
1941: $space_neeeded=0;
1942: for (my $jn=0;$jn<=$#min_len;$jn++) {
1943: $space_neeeded+=$min_len[$jn];
1944: }
1945: if ($space_neeeded>$available_space) {
1946: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1947: for (my $jn=0;$jn<=$#max_len;$jn++) {
1948: if ($fwidth[$jn]==0) {
1949: $fwidth[$jn]=$min_len[$jn];
1950: }
1951: }
1952: #check if we have objects which can be scaled
1953: my $how_many_to_scale=0;
1954: my @to_scale=();
1955: for (my $jn=0;$jn<=$#max_len;$jn++) {
1956: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1957: $how_many_to_scale++;
1958: push @to_scale, $jn;
1959: }
1960: }
1961: if ($how_many_to_scale>0) {
1962: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1963: foreach my $jn (@to_scale) {
1964: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1965: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1966: if ($1 ne '') {
1967: my $current_length=&recalc($1);
1968: $current_length=~/(\d+\.?\d*)/;
1969: $current_length=$current_length-$space_to_adjust;
1970: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1971: }
1972: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1973: if ($1 ne '') {
1974: my $current_length=$1;
1975: $current_length=$current_length-$space_to_adjust;
1976: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
1977: }
1978: }
1979: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
1980: }
1981: }
1982: } else {
1983: #step 3. adjustment over minimal + corrections
1984: my $enlarge_coef=$available_space/$space_neeeded;
1985: my $acsessive=0;
1986: for (my $jn=0;$jn<=$#min_len;$jn++) {
1987: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1988: if ($adjust[$jn]>$max_len[$jn]) {
1989: $fwidth[$jn]=$max_len[$jn];
1990: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1991: $adjust[$jn]=0;
1992: }
1993: }
1994: if ($acsessive>0) {
1995: #we have an excess of space and can redistribute it
1996: my $notempty_columns=0;
1997: for (my $jn=0;$jn<=$#min_len;$jn++) {
1998: if ($adjust[$jn]!=0) {
1999: $notempty_columns++;
2000: }
2001: }
2002: my $per_column=$acsessive/$notempty_columns;
2003: for (my $jn=0;$jn<=$#min_len;$jn++) {
2004: if ($adjust[$jn]!=0) {
2005: $adjust[$jn]+=$per_column;
2006: $fwidth[$jn]=$adjust[$jn];
2007: }
2008: }
2009: } else {
2010: for (my $jn=0;$jn<=$#min_len;$jn++) {
2011: $fwidth[$jn]=$adjust[$jn];
2012: }
2013: }
2014: }
2015: }
2016: #use all available width if it is defined in % or as TeXwidth
2017: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2018: my $current=0;
2019: for (my $i=0;$i<=$#fwidth;$i++) {
2020: $current+=$fwidth[$i];
2021: }
2022: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2023: for (my $i=0;$i<=$#fwidth;$i++) {
2024: $fwidth[$i]*=$coef;
2025: }
2026: }
2027: #removing of empty columns if allowed
2028: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2029: if ($permission eq 'yes') {
2030: my @cleaned_table=();
2031: my @cleaned_header=();
2032: my $colind=0;
2033: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2034: if ($fwidth[$jn]!=0) {
2035: #we need to copy column
2036: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2037: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2038: $cleaned_header[$colind]=$fwidth[$jn];
2039: }
2040: $colind++;
2041: }
2042: }
2043: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2044: @fwidth=@cleaned_header;
2045: }
2046: #construct header of the table
2047: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2048: for (my $in=0;$in<=$#fwidth;$in++) {
2049: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2050: }
2051: $header_of_table .= '}';
2052: #fill the table
2053: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2054: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2055: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2056: $output.='\vspace*{-6 mm}\begin{center}';
2057: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2058: $output.=' \hfill \llap{'
2059: }
2060: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2061: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2062: $output.='\end{center}\vspace*{-6 mm}';
2063: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2064: $output.='} ';
2065: }
2066: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2067: }
2068: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2069: }
2070: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2071: if ($#Apache::londefdef::table > 0) {
2072: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2073: pop @Apache::londefdef::table;
2074: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2075: } else {
2076: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2077: pop @Apache::londefdef::table;
2078: undef @Apache::londefdef::table;
2079: }
2080: }
2081: return $currentstring;
2082: }
2083:
2084: #-- <tr> tag (end tag optional)
2085: sub start_tr {
2086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2087: my $currentstring = '';
2088: if ($target eq 'web') {
2089: $currentstring = $token->[4];
2090: } elsif ($target eq 'tex') {
2091: $Apache::londefdef::table[-1]{'row_number'}++;
2092: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2093: if ($alignchar ne '') {
2094: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2095: } else {
2096: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2097: }
2098: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2099: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2100: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2101: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2102: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2103: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2104: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2105: }
2106: return $currentstring;
2107: }
2108:
2109: sub end_tr {
2110: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2111: my $currentstring = '';
2112: if ($target eq 'web') {
2113: $currentstring = $token->[2];
2114: } elsif ($target eq 'tex') {
2115: if ($Apache::londefdef::TD_redirection) {
2116: &end_td_tex($parstack,$parser,$safeeval);
2117: }
2118: }
2119: return $currentstring;
2120: }
2121:
2122: #-- <td> tag (end tag optional)
2123: sub start_td {
2124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2125: my $currentstring = '';
2126: if ($target eq 'web') {
2127: $currentstring = $token->[4];
2128: } elsif ($target eq 'tex') {
2129: $Apache::londefdef::TD_redirection = 1;
2130: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2131: }
2132: return $currentstring;
2133: }
2134:
2135: sub tag_check {
2136: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2137: my @ar=@$parstack;
2138: for (my $i=$#ar-1;$i>=0;$i--) {
2139: if (lc($$tagstack[$i]) eq $good_tag) {
2140: &start_td_tex($parstack,$parser,$safeeval);
2141: last;
2142: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2143: splice @ar, $i+1;
2144: &end_td_tex(\@ar,$parser,$safeeval);
2145: &start_td_tex($parstack,$parser,$safeeval);
2146: last;
2147: }
2148: }
2149: return '';
2150: }
2151:
2152: sub start_td_tex {
2153: my ($parstack,$parser,$safeeval) = @_;
2154: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2155: if ($alignchar eq '') {
2156: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2157: }
2158: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2159: $Apache::londefdef::table[-1]{'counter_columns'}++;
2160: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2161: if (defined $TeXwidth) {
2162: my $current_length=&recalc($TeXwidth);
2163: $current_length=~/(\d+\.?\d*)/;
2164: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2165: }
2166: &Apache::lonxml::startredirection();
2167: return '';
2168: }
2169:
2170: sub end_td_tex {
2171: my ($parstack,$parser,$safeeval) = @_;
2172: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2173: my $data=&Apache::lonxml::endredirection();
2174: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2175: if (defined $TeXwidth) {
2176: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2177: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2178: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2179: } else {
2180: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2181: my $garbage_data=$data;
2182: my $fwidth=0;
2183: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2184: my $current_length=&recalc($1);
2185: $current_length=~/(\d+\.?\d*)/;
2186: if ($fwidth<$1) {$fwidth=$1;}
2187: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2188: }
2189: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2190: my $current_length=$1;
2191: if ($fwidth<$current_length) {$fwidth=$current_length;}
2192: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2193: }
2194: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2195: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2196: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2197: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2198: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2199: my $garbage_data=$data;
2200: my $fwidth=0;
2201: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2202: my $current_length=&recalc($1);
2203: $current_length=~/(\d+\.?\d*)/;
2204: if ($fwidth<$1) {$fwidth=$1;}
2205: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2206: }
2207: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2208: my $current_length=&recalc($1);
2209: $current_length=~/(\d+\.?\d*)/;
2210: if ($fwidth<$1) {$fwidth=$1;}
2211: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2212: }
2213: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2214: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2215: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2216: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2217: $data=~s/\\\\\s*$//;
2218: } else {
2219: $data=~s/^\s+(\S.*)/$1/;
2220: $data=~s/(.*\S)\s+$/$1/;
2221: $data=~s/(\s)+/$1/;
2222: my ($current_length,$min_length)=(0,0);
2223: if ($data=~/\\vskip/) {
2224: my $newdata=$data;
2225: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2226: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2227: foreach my $elementdata (@newdata) {
2228: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2229: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2230: my @words=split(/ /,$elementdata);
2231: foreach my $word (@words) {
2232: my $lengthword=2.5*&LATEX_length($word);
2233: if ($min_length<$lengthword) {$min_length=$lengthword;}
2234: }
2235: }
2236: } else {
2237: $current_length=2.5*&LATEX_length($data);
2238: my @words=split(/ /,$data);
2239: foreach my $word (@words) {
2240: my $lengthword=2*&LATEX_length($word);
2241: if ($min_length<$lengthword) {$min_length=$lengthword;}
2242: }
2243: }
2244: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2245: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2246: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2247: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2248: }
2249: }
2250: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2251: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2252: }
2253: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2254: return'';
2255: }
2256:
2257: sub end_td {
2258: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2259: my $currentstring = '';
2260: if ($target eq 'web') {
2261: $currentstring = $token->[2];
2262: } elsif ($target eq 'tex') {
2263: $Apache::londefdef::TD_redirection =0;
2264: &end_td_tex($parstack,$parser,$safeeval);
2265: }
2266: return $currentstring;
2267: }
2268:
2269: #-- <th> tag (end tag optional)
2270: sub start_th {
2271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2272: my $currentstring = '';
2273: if ($target eq 'web') {
2274: $currentstring = $token->[4];
2275: } elsif ($target eq 'tex') {
2276: $Apache::londefdef::TD_redirection = 1;
2277: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2278: }
2279: return $currentstring;
2280: }
2281:
2282: sub tagg_check {
2283: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2284: my @ar=@$parstack;
2285: for (my $i=$#ar-1;$i>=0;$i--) {
2286: if (lc($$tagstack[$i]) eq $good_tag) {
2287: &start_th_tex($parstack,$parser,$safeeval);
2288: last;
2289: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2290: splice @ar, $i+1;
2291: &end_th_tex(\@ar,$parser,$safeeval);
2292: &start_th_tex($parstack,$parser,$safeeval);
2293: last;
2294: }
2295: }
2296: return '';
2297: }
2298:
2299: sub start_th_tex {
2300: my ($parstack,$parser,$safeeval) = @_;
2301: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2302: if ($alignchar eq '') {
2303: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2304: }
2305: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2306: $Apache::londefdef::table[-1]{'counter_columns'}++;
2307: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2308: if (defined $TeXwidth) {
2309: my $current_length=&recalc($TeXwidth);
2310: $current_length=~/(\d+\.?\d*)/;
2311: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2312: }
2313: &Apache::lonxml::startredirection();
2314: return '';
2315: }
2316:
2317: sub end_th_tex {
2318: my ($parstack,$parser,$safeeval) = @_;
2319: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2320: my $data=&Apache::lonxml::endredirection();
2321: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2322: if (defined $TeXwidth) {
2323: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2324: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2325: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2326: } else {
2327: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2328: my $garbage_data=$data;
2329: my $fwidth=0;
2330: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2331: my $current_length=&recalc($1);
2332: $current_length=~/(\d+\.?\d*)/;
2333: if ($fwidth<$1) {$fwidth=$1;}
2334: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2335: }
2336: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2337: my $current_length=$1;
2338: if ($fwidth<$current_length) {$fwidth=$current_length;}
2339: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2340: }
2341: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2342: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2343: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2344: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2345: } else {
2346: $data=~s/^\s+(\S.*)/$1/;
2347: $data=~s/(.*\S)\s+$/$1/;
2348: $data=~s/(\s)+/$1/;
2349: my ($current_length,$min_length)=(0,0);
2350: if ($data=~/\\vskip/) {
2351: my $newdata=$data;
2352: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2353: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2354: foreach my $elementdata (@newdata) {
2355: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2356: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2357: my @words=split(/ /,$elementdata);
2358: foreach my $word (@words) {
2359: my $lengthword=2.5*&LATEX_length($word);
2360: if ($min_length<$lengthword) {$min_length=$lengthword;}
2361: }
2362: }
2363: } else {
2364: $current_length=2.5*&LATEX_length($data);
2365: my @words=split(/ /,$data);
2366: foreach my $word (@words) {
2367: my $lengthword=2*&LATEX_length($word);
2368: if ($min_length<$lengthword) {$min_length=$lengthword;}
2369: }
2370: }
2371: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2372: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2374: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2375: }
2376: }
2377: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2378: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2379: }
2380: #make data bold
2381: $data='\textbf{'.$data.'}';
2382: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2383: return'';
2384: }
2385:
2386: sub end_th {
2387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2388: my $currentstring = '';
2389: if ($target eq 'web') {
2390: $currentstring = $token->[2];
2391: } elsif ($target eq 'tex') {
2392: $Apache::londefdef::TD_redirection =0;
2393: &end_th_tex($parstack,$parser,$safeeval);
2394: }
2395: return $currentstring;
2396: }
2397:
2398: #-- <img> tag (end tag forbidden)
2399: sub start_img {
2400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2401: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2402: undef,1);
2403: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2404: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2405: return '';
2406: }
2407: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2408: my $currentstring = '';
2409: my $scaling = .3;
2410: if ($target eq 'web') {
2411: if ($ENV{'browser.imagesuppress'} ne 'on') {
2412: $currentstring.= $token->[4];
2413: } else {
2414: my $alttag= &Apache::lonxml::get_param
2415: ('alt',$parstack,$safeeval,undef,1);
2416: unless ($alttag) {
2417: $alttag=&Apache::lonmeta::alttag
2418: ($Apache::lonxml::pwd[-1],$src);
2419: }
2420: $currentstring.='[IMAGE: '.$alttag.']';
2421: }
2422: } elsif ($target eq 'tex') {
2423: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2424: #if uploaded restore the path
2425: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2426: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2427: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2428: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2429: }
2430: #if original gif/jpg/png file exist do following:
2431: if (-e $src) {
2432: #what is the image size?
2433: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2434: my ($file,$path)=&file_path($src);
2435: my $newsrc = $src;
2436: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2437: $file=~s/\.(gif|jpg|png)$/.eps/i;
2438: #where can we find the picture?
2439: if (-e $newsrc) {
2440: #eps counterpart for image exist
2441: if ($path) {
2442: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2443: }
2444: } else {
2445: #there is no eps counterpart for image - check for ps one
2446: $newsrc =~ s/\.eps$/\.ps/;
2447: if (-e $newsrc) {
2448: #ps counterpart for image exist
2449: $file =~ s/\.eps$/\.ps/;
2450: if ($path) {
2451: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2452: }
2453: } else {
2454: #care about eps dynamical generation
2455: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2456: }
2457: }
2458: } else {
2459: #original image file doesn't exist so check the alt attribute
2460: my $alt =
2461: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2462: unless ($alt) {
2463: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2464: }
2465:
2466: if ($alt) {
2467: $currentstring .= ' '.$alt.' ';
2468: } else {
2469: #<allow> tag will care about replication
2470: }
2471: }
2472: } elsif ($target eq 'edit') {
2473: $currentstring .=&Apache::edit::tag_start($target,$token);
2474: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2475: &Apache::edit::browse('src',undef,'alt').' '.
2476: &Apache::edit::search('src',undef,'alt').'<br />';
2477: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2478: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2479: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2480: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2481: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2482: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2483: ['','bottom','middle','top','left','right'],$token,5);
2484: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2485: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2486: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2487: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2488: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2489: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2490: if ($width) { $currentstring.=' width="'.$width.'" '; }
2491: if ($height) { $currentstring.=' height="'.$height.'" '; }
2492: $currentstring .= ' />';
2493: } elsif ($target eq 'modified') {
2494: my ($osrc,$owidth,$oheight)=
2495: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2496: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2497: $safeeval,'src','alt','align',
2498: 'TeXwidth','TeXheight',
2499: 'width','height');
2500: my ($nsrc,$nwidth,$nheight)=
2501: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2502: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2503: &image_replication($loc);
2504: my ($iwidth,$iheight);
2505: if (-e $loc) {
2506: my $image = Image::Magick->new;
2507: $image->Read($loc);
2508: ($iwidth, $iheight) = ($image->Get('width'),
2509: $image->Get('height'));
2510: }
2511: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2512: # changed image or no size specified,
2513: # if they didn't explicitly change the
2514: # width or height use the ones from the image
2515: if ($iwidth && $iheight) {
2516: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2517: $token->[2]{'width'} = $iwidth;$ctag=1;
2518: }
2519: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2520: $token->[2]{'height'}=$iheight;$ctag=1;
2521: }
2522: }
2523: }
2524: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2525: # if we don't have a width or height
2526: if ($iwidth && $cwidth && !$cheight) {
2527: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2528: }
2529: if ($iheight && $cheight && !$cwidth) {
2530: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2531: }
2532: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2533: }
2534: return $currentstring;
2535: }
2536:
2537: sub end_img {
2538: my ($target,$token) = @_;
2539: my $currentstring = '';
2540: if ($target eq 'web') {
2541: $currentstring = $token->[2];
2542: } elsif ($target eq 'tex') {
2543: $currentstring = '';
2544: }
2545: return $currentstring;
2546: }
2547:
2548: #-- <applet> tag (end tag required)
2549: sub start_applet {
2550: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2551:
2552: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2553: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2554:
2555: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2556: undef,1);
2557: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2558:
2559: my $currentstring = '';
2560: if ($target eq 'web') {
2561: if ($ENV{'browser.appletsuppress'} ne 'on') {
2562: $currentstring = $token->[4];
2563: } else {
2564: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2565: $safeeval,undef,1);
2566: unless ($alttag) {
2567: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2568: $code);
2569: }
2570: $currentstring='[APPLET: '.$alttag.']';
2571: }
2572: } elsif ($target eq 'tex') {
2573: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2574: $safeeval,undef,1);
2575: unless ($alttag) {
2576: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2577: undef,1);
2578: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2579: $code);
2580: }
2581: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2582: '.}\end{center}';
2583: }
2584: return $currentstring;
2585: }
2586:
2587: sub end_applet {
2588: my ($target,$token) = @_;
2589: my $currentstring = '';
2590: if ($target eq 'web') {
2591: $currentstring = $token->[2];
2592: } elsif ($target eq 'tex') {
2593: }
2594: return $currentstring;
2595: }
2596:
2597: #-- <embed> tag (end tag optional/required)
2598: sub start_embed {
2599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2600: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2601: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2602: my $currentstring = '';
2603: if ($target eq 'web') {
2604: if ($ENV{'browser.embedsuppress'} ne 'on') {
2605: $currentstring = $token->[4];
2606: } else {
2607: my $alttag=&Apache::lonxml::get_param
2608: ('alt',$parstack,$safeeval,undef,1);
2609: unless ($alttag) {
2610: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2611: }
2612: $currentstring='[EMBED: '.$alttag.']';
2613: }
2614: } elsif ($target eq 'tex') {
2615: }
2616: return $currentstring;
2617: }
2618:
2619: sub end_embed {
2620: my ($target,$token) = @_;
2621: my $currentstring = '';
2622: if ($target eq 'web') {
2623: $currentstring = $token->[2];
2624: } elsif ($target eq 'tex') {
2625: }
2626: return $currentstring;
2627: }
2628:
2629: #-- <param> tag (end tag forbidden)
2630: sub start_param {
2631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2632: if (&Apache::lonxml::get_param
2633: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2634: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2635: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2636: }
2637: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2638: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2639: my $currentstring = '';
2640: if ($target eq 'web') {
2641: $currentstring = $token->[4];
2642: } elsif ($target eq 'tex') {
2643: }
2644: return $currentstring;
2645: }
2646:
2647: sub end_param {
2648: my ($target,$token) = @_;
2649: my $currentstring = '';
2650: if ($target eq 'web') {
2651: $currentstring = $token->[2];
2652: } elsif ($target eq 'tex') {
2653: }
2654: return $currentstring;
2655: }
2656:
2657: #-- <allow> tag
2658: sub start_allow {
2659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2660: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2661: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2662: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2663: &Apache::lonnet::clutter($src);
2664: &image_replication($src);
2665: my $result;
2666: if ($target eq 'edit') {
2667: $result .=&Apache::edit::tag_start($target,$token);
2668: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2669: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2670: } elsif ($target eq 'modified') {
2671: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2672: $safeeval,'src');
2673: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2674: }
2675: return $result;
2676: }
2677:
2678: sub end_allow {
2679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2680: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2681: return '';
2682: }
2683:
2684: #-- Frames (end tag required)
2685: #-- <frameset>
2686: sub start_frameset {
2687: my ($target,$token) = @_;
2688: my $currentstring = '';
2689: if ($target eq 'web') {
2690: if (!$Apache::lonxml::registered &&
2691: $ENV{'request.state'} eq 'published') {
2692: $currentstring.='<head>'.
2693: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2694: }
2695: my $onLoad='';
2696: foreach my $key (keys(%{$token->[2]})) {
2697: if ($key =~ /^onload$/i) {
2698: $onLoad.=$token->[2]->{$key}.';';
2699: delete($token->[2]->{$key});
2700: }
2701: }
2702: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2703: my $onUnload='';
2704: foreach my $key (keys(%{$token->[2]})) {
2705: if ($key =~ /^onunload$/i) {
2706: $onUnload.=$token->[2]->{$key}.';';
2707: delete($token->[2]->{$key});
2708: }
2709: }
2710: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2711: ';'.$onUnload;
2712:
2713: $currentstring .= '<'.$token->[1];
2714: foreach (keys %{$token->[2]}) {
2715: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2716: }
2717: $currentstring.='>';
2718: }
2719: return $currentstring;
2720: }
2721:
2722: sub end_frameset {
2723: my ($target,$token) = @_;
2724: my $currentstring = '';
2725: if ($target eq 'web') {
2726: $currentstring = $token->[2];
2727: }
2728: return $currentstring;
2729: }
2730:
2731: #-- <xmp> (end tag required)
2732: sub start_xmp {
2733: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2734: my $currentstring = '';
2735: if ($target eq 'web') {
2736: $currentstring .= $token->[4];
2737: } elsif ($target eq 'tex') {
2738: $currentstring .= '\begin{verbatim}';
2739: }
2740: return $currentstring;
2741: }
2742:
2743: sub end_xmp {
2744: my ($target,$token) = @_;
2745: my $currentstring = '';
2746: if ($target eq 'web') {
2747: $currentstring .= $token->[2];
2748: } elsif ($target eq 'tex') {
2749: $currentstring .= '\end{verbatim}';
2750: }
2751: return $currentstring;
2752: }
2753:
2754: #-- <pre> (end tag required)
2755: sub start_pre {
2756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2757: my $currentstring = '';
2758: if ($target eq 'web') {
2759: $currentstring .= $token->[4];
2760: } elsif ($target eq 'tex') {
2761: $currentstring .= '\begin{verbatim}';
2762: }
2763: return $currentstring;
2764: }
2765:
2766: sub end_pre {
2767: my ($target,$token) = @_;
2768: my $currentstring = '';
2769: if ($target eq 'web') {
2770: $currentstring .= $token->[2];
2771: } elsif ($target eq 'tex') {
2772: $currentstring .= '\end{verbatim}';
2773: }
2774: return $currentstring;
2775: }
2776:
2777: #-- <insert>
2778: sub start_insert {
2779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2780: my $currentstring = '';
2781: if ($target eq 'web') {
2782: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2783: $currentstring .= '<b>'.$display.'</b>';;
2784: }
2785: return $currentstring;
2786: }
2787:
2788: sub end_insert {
2789: my ($target,$token) = @_;
2790: my $currentstring = '';
2791: if ($target eq 'web') {
2792: $currentstring .= '';
2793: }
2794: return $currentstring;
2795: }
2796:
2797: #-- <externallink>
2798: sub start_externallink {
2799: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2800: my $currentstring = '';
2801: if ($target eq 'web') {
2802: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2803: $currentstring .= '<b>'.$display.'</b>';;
2804: }
2805: return $currentstring;
2806: }
2807:
2808: sub end_externallink {
2809: my ($target,$token) = @_;
2810: my $currentstring = '';
2811: if ($target eq 'web') {
2812: $currentstring .= '';
2813: }
2814: return $currentstring;
2815: }
2816:
2817: #-- <blankspace heigth="">
2818: sub start_blankspace {
2819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2820: my $currentstring = '';
2821: if ($target eq 'tex') {
2822: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2823: $currentstring .= '\vskip '.$howmuch.' ';
2824: }
2825: return $currentstring;
2826: }
2827:
2828: sub end_blankspace {
2829: my ($target,$token) = @_;
2830: my $currentstring = '';
2831: if ($target eq 'tex') {
2832: $currentstring .= '';
2833: }
2834: return $currentstring;
2835: }
2836:
2837: #-- <abbr> tag (end tag required)
2838: sub start_abbr {
2839: my ($target,$token) = @_;
2840: my $currentstring = '';
2841: if ($target eq 'web') {
2842: $currentstring = $token->[4];
2843: }
2844: return $currentstring;
2845: }
2846:
2847: sub end_abbr {
2848: my ($target,$token) = @_;
2849: my $currentstring = '';
2850: if ($target eq 'web') {
2851: $currentstring = $token->[2];
2852: }
2853: return $currentstring;
2854: }
2855:
2856: #-- <acronym> tag (end tag required)
2857: sub start_acronym {
2858: my ($target,$token) = @_;
2859: my $currentstring = '';
2860: if ($target eq 'web') {
2861: $currentstring = $token->[4];
2862: }
2863: return $currentstring;
2864: }
2865:
2866: sub end_acronym {
2867: my ($target,$token) = @_;
2868: my $currentstring = '';
2869: if ($target eq 'web') {
2870: $currentstring = $token->[2];
2871: }
2872: return $currentstring;
2873: }
2874:
2875: #-- <area> tag (end tag forbidden)
2876: sub start_area {
2877: my ($target,$token) = @_;
2878: my $currentstring = '';
2879: if ($target eq 'web') {
2880: $currentstring = $token->[4];
2881: }
2882: return $currentstring;
2883: }
2884:
2885: sub end_area {
2886: my ($target,$token) = @_;
2887: my $currentstring = '';
2888: if ($target eq 'web') {
2889: $currentstring = $token->[2];
2890: }
2891: return $currentstring;
2892: }
2893:
2894: #-- <base> tag (end tag forbidden)
2895: sub start_base {
2896: my ($target,$token) = @_;
2897: my $currentstring = '';
2898: if ($target eq 'web') {
2899: $currentstring = $token->[4];
2900: }
2901: return $currentstring;
2902: }
2903:
2904: sub end_base {
2905: my ($target,$token) = @_;
2906: my $currentstring = '';
2907: if ($target eq 'web') {
2908: $currentstring = $token->[2];
2909: }
2910: return $currentstring;
2911: }
2912:
2913: #-- <bdo> tag (end tag required)
2914: sub start_bdo {
2915: my ($target,$token) = @_;
2916: my $currentstring = '';
2917: if ($target eq 'web') {
2918: $currentstring = $token->[4];
2919: }
2920: return $currentstring;
2921: }
2922:
2923: sub end_bdo {
2924: my ($target,$token) = @_;
2925: my $currentstring = '';
2926: if ($target eq 'web') {
2927: $currentstring = $token->[2];
2928: }
2929: return $currentstring;
2930: }
2931:
2932: #-- <bgsound> tag (end tag optional)
2933: sub start_bgsound {
2934: my ($target,$token) = @_;
2935: my $currentstring = '';
2936: if ($target eq 'web') {
2937: $currentstring = $token->[4];
2938: }
2939: return $currentstring;
2940: }
2941:
2942: sub end_bgsound {
2943: my ($target,$token) = @_;
2944: my $currentstring = '';
2945: if ($target eq 'web') {
2946: $currentstring = $token->[2];
2947: }
2948: return $currentstring;
2949: }
2950:
2951: #-- <blink> tag (end tag required)
2952: sub start_blink {
2953: my ($target,$token) = @_;
2954: my $currentstring = '';
2955: if ($target eq 'web') {
2956: $currentstring = $token->[4];
2957: }
2958: return $currentstring;
2959: }
2960:
2961: sub end_blink {
2962: my ($target,$token) = @_;
2963: my $currentstring = '';
2964: if ($target eq 'web') {
2965: $currentstring = $token->[2];
2966: }
2967: return $currentstring;
2968: }
2969:
2970: #-- <blockquote> tag (end tag required)
2971: sub start_blockquote {
2972: my ($target,$token) = @_;
2973: my $currentstring = '';
2974: if ($target eq 'web') {
2975: $currentstring = $token->[4];
2976: }
2977: return $currentstring;
2978: }
2979:
2980: sub end_blockquote {
2981: my ($target,$token) = @_;
2982: my $currentstring = '';
2983: if ($target eq 'web') {
2984: $currentstring = $token->[2];
2985: }
2986: return $currentstring;
2987: }
2988:
2989: #-- <button> tag (end tag required)
2990: sub start_button {
2991: my ($target,$token) = @_;
2992: my $currentstring = '';
2993: if ($target eq 'web') {
2994: $currentstring = $token->[4];
2995: }
2996: return $currentstring;
2997: }
2998:
2999: sub end_button {
3000: my ($target,$token) = @_;
3001: my $currentstring = '';
3002: if ($target eq 'web') {
3003: $currentstring = $token->[2];
3004: }
3005: return $currentstring;
3006: }
3007:
3008: #-- <caption> tag (end tag required)
3009: sub start_caption {
3010: my ($target,$token) = @_;
3011: my $currentstring = '';
3012: if ($target eq 'web') {
3013: $currentstring = $token->[4];
3014: }
3015: return $currentstring;
3016: }
3017:
3018: sub end_caption {
3019: my ($target,$token) = @_;
3020: my $currentstring = '';
3021: if ($target eq 'web') {
3022: $currentstring = $token->[2];
3023: }
3024: return $currentstring;
3025: }
3026:
3027: #-- <col> tag (end tag forbdden)
3028: sub start_col {
3029: my ($target,$token) = @_;
3030: my $currentstring = '';
3031: if ($target eq 'web') {
3032: $currentstring = $token->[4];
3033: }
3034: return $currentstring;
3035: }
3036:
3037: sub end_col {
3038: my ($target,$token) = @_;
3039: my $currentstring = '';
3040: if ($target eq 'web') {
3041: $currentstring = $token->[2];
3042: }
3043: return $currentstring;
3044: }
3045:
3046: #-- <colgroup> tag (end tag optional)
3047: sub start_colgroup {
3048: my ($target,$token) = @_;
3049: my $currentstring = '';
3050: if ($target eq 'web') {
3051: $currentstring = $token->[4];
3052: }
3053: return $currentstring;
3054: }
3055:
3056: sub end_colgroup {
3057: my ($target,$token) = @_;
3058: my $currentstring = '';
3059: if ($target eq 'web') {
3060: $currentstring = $token->[2];
3061: }
3062: return $currentstring;
3063: }
3064:
3065: #-- <del> tag (end tag required)
3066: sub start_del {
3067: my ($target,$token) = @_;
3068: my $currentstring = '';
3069: if ($target eq 'web') {
3070: $currentstring = $token->[4];
3071: }
3072: return $currentstring;
3073: }
3074:
3075: sub end_del {
3076: my ($target,$token) = @_;
3077: my $currentstring = '';
3078: if ($target eq 'web') {
3079: $currentstring = $token->[2];
3080: }
3081: return $currentstring;
3082: }
3083:
3084: #-- <fieldset> tag (end tag required)
3085: sub start_fieldset {
3086: my ($target,$token) = @_;
3087: my $currentstring = '';
3088: if ($target eq 'web') {
3089: $currentstring = $token->[4];
3090: }
3091: return $currentstring;
3092: }
3093:
3094: sub end_fieldset {
3095: my ($target,$token) = @_;
3096: my $currentstring = '';
3097: if ($target eq 'web') {
3098: $currentstring = $token->[2];
3099: }
3100: return $currentstring;
3101: }
3102:
3103: #-- <frame> tag (end tag forbidden)
3104: sub start_frame {
3105: my ($target,$token) = @_;
3106: my $currentstring = '';
3107: if ($target eq 'web') {
3108: $currentstring = $token->[4];
3109: }
3110: return $currentstring;
3111: }
3112:
3113: sub end_frame {
3114: my ($target,$token) = @_;
3115: my $currentstring = '';
3116: if ($target eq 'web') {
3117: $currentstring = $token->[2];
3118: }
3119: return $currentstring;
3120: }
3121:
3122: #-- <iframe> tag (end tag required)
3123: sub start_iframe {
3124: my ($target,$token) = @_;
3125: my $currentstring = '';
3126: if ($target eq 'web') {
3127: $currentstring = $token->[4];
3128: }
3129: return $currentstring;
3130: }
3131:
3132: sub end_iframe {
3133: my ($target,$token) = @_;
3134: my $currentstring = '';
3135: if ($target eq 'web') {
3136: $currentstring = $token->[2];
3137: }
3138: return $currentstring;
3139: }
3140:
3141: #-- <ins> tag (end tag required)
3142: sub start_ins {
3143: my ($target,$token) = @_;
3144: my $currentstring = '';
3145: if ($target eq 'web') {
3146: $currentstring = $token->[4];
3147: }
3148: return $currentstring;
3149: }
3150:
3151: sub end_ins {
3152: my ($target,$token) = @_;
3153: my $currentstring = '';
3154: if ($target eq 'web') {
3155: $currentstring = $token->[2];
3156: }
3157: return $currentstring;
3158: }
3159:
3160: #-- <isindex> tag (end tag forbidden)
3161: sub start_isindex {
3162: my ($target,$token) = @_;
3163: my $currentstring = '';
3164: if ($target eq 'web') {
3165: $currentstring = $token->[4];
3166: }
3167: return $currentstring;
3168: }
3169:
3170: sub end_isindex {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web') {
3174: $currentstring = $token->[2];
3175: }
3176: return $currentstring;
3177: }
3178:
3179: #-- <keygen> tag (end tag forbidden)
3180: sub start_keygen {
3181: my ($target,$token) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web') {
3184: $currentstring = $token->[4];
3185: }
3186: return $currentstring;
3187: }
3188:
3189: sub end_keygen {
3190: my ($target,$token) = @_;
3191: my $currentstring = '';
3192: if ($target eq 'web') {
3193: $currentstring = $token->[2];
3194: }
3195: return $currentstring;
3196: }
3197:
3198: #-- <label> tag
3199: sub start_label {
3200: my ($target,$token) = @_;
3201: my $currentstring = '';
3202: if ($target eq 'web') {
3203: $currentstring = $token->[4];
3204: }
3205: return $currentstring;
3206: }
3207:
3208: sub end_label {
3209: my ($target,$token) = @_;
3210: my $currentstring = '';
3211: if ($target eq 'web') {
3212: $currentstring = $token->[2];
3213: }
3214: return $currentstring;
3215: }
3216:
3217: #-- <layer> tag (end tag required)
3218: sub start_layer {
3219: my ($target,$token) = @_;
3220: my $currentstring = '';
3221: if ($target eq 'web') {
3222: $currentstring = $token->[4];
3223: }
3224: return $currentstring;
3225: }
3226:
3227: sub end_layer {
3228: my ($target,$token) = @_;
3229: my $currentstring = '';
3230: if ($target eq 'web') {
3231: $currentstring = $token->[2];
3232: }
3233: return $currentstring;
3234: }
3235:
3236: #-- <legend> tag (end tag required)
3237: sub start_legend {
3238: my ($target,$token) = @_;
3239: my $currentstring = '';
3240: if ($target eq 'web') {
3241: $currentstring = $token->[4];
3242: }
3243: return $currentstring;
3244: }
3245:
3246: sub end_legend {
3247: my ($target,$token) = @_;
3248: my $currentstring = '';
3249: if ($target eq 'web') {
3250: $currentstring = $token->[2];
3251: }
3252: return $currentstring;
3253: }
3254:
3255: #-- <link> tag (end tag forbidden)
3256: sub start_link {
3257: my ($target,$token) = @_;
3258: my $currentstring = '';
3259: if ($target eq 'web') {
3260: $currentstring = $token->[4];
3261: }
3262: return $currentstring;
3263: }
3264:
3265: sub end_link {
3266: my ($target,$token) = @_;
3267: my $currentstring = '';
3268: if ($target eq 'web') {
3269: $currentstring = $token->[2];
3270: }
3271: return $currentstring;
3272: }
3273:
3274: #-- <marquee> tag (end tag optional)
3275: sub start_marquee {
3276: my ($target,$token) = @_;
3277: my $currentstring = '';
3278: if ($target eq 'web') {
3279: $currentstring = $token->[4];
3280: }
3281: return $currentstring;
3282: }
3283:
3284: sub end_marquee {
3285: my ($target,$token) = @_;
3286: my $currentstring = '';
3287: if ($target eq 'web') {
3288: $currentstring = $token->[2];
3289: }
3290: return $currentstring;
3291: }
3292:
3293: #-- <multicol> tag (end tag required)
3294: sub start_multicol {
3295: my ($target,$token) = @_;
3296: my $currentstring = '';
3297: if ($target eq 'web') {
3298: $currentstring = $token->[4];
3299: }
3300: return $currentstring;
3301: }
3302:
3303: sub end_multicol {
3304: my ($target,$token) = @_;
3305: my $currentstring = '';
3306: if ($target eq 'web') {
3307: $currentstring = $token->[2];
3308: }
3309: return $currentstring;
3310: }
3311:
3312: #-- <nobr> tag (end tag required)
3313: sub start_nobr {
3314: my ($target,$token) = @_;
3315: my $currentstring = '';
3316: if ($target eq 'web') {
3317: $currentstring = $token->[4];
3318: } elsif ($target eq 'tex') {
3319: $currentstring='\mbox{';
3320: }
3321: return $currentstring;
3322: }
3323:
3324: sub end_nobr {
3325: my ($target,$token) = @_;
3326: my $currentstring = '';
3327: if ($target eq 'web') {
3328: $currentstring = $token->[2];
3329: } elsif ($target eq 'tex') {
3330: $currentstring='}';
3331: }
3332: return $currentstring;
3333: }
3334:
3335: #-- <noembed> tag (end tag required)
3336: sub start_noembed {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web') {
3340: $currentstring = $token->[4];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: sub end_noembed {
3346: my ($target,$token) = @_;
3347: my $currentstring = '';
3348: if ($target eq 'web') {
3349: $currentstring = $token->[2];
3350: }
3351: return $currentstring;
3352: }
3353:
3354: #-- <noframes> tag (end tag required)
3355: sub start_noframes {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web') {
3359: $currentstring = $token->[4];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: sub end_noframes {
3365: my ($target,$token) = @_;
3366: my $currentstring = '';
3367: if ($target eq 'web') {
3368: $currentstring = $token->[2];
3369: }
3370: return $currentstring;
3371: }
3372:
3373: #-- <nolayer> tag (end tag required)
3374: sub start_nolayer {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web') {
3378: $currentstring = $token->[4];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: sub end_nolayer {
3384: my ($target,$token) = @_;
3385: my $currentstring = '';
3386: if ($target eq 'web') {
3387: $currentstring = $token->[2];
3388: }
3389: return $currentstring;
3390: }
3391:
3392: #-- <noscript> tag (end tag required)
3393: sub start_noscript {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web') {
3397: $currentstring = $token->[4];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: sub end_noscript {
3403: my ($target,$token) = @_;
3404: my $currentstring = '';
3405: if ($target eq 'web') {
3406: $currentstring = $token->[2];
3407: }
3408: return $currentstring;
3409: }
3410:
3411: #-- <object> tag (end tag required)
3412: sub start_object {
3413: my ($target,$token) = @_;
3414: my $currentstring = '';
3415: if ($target eq 'web') {
3416: $currentstring = $token->[4];
3417: }
3418: return $currentstring;
3419: }
3420:
3421: sub end_object {
3422: my ($target,$token) = @_;
3423: my $currentstring = '';
3424: if ($target eq 'web') {
3425: $currentstring = $token->[2];
3426: }
3427: return $currentstring;
3428: }
3429:
3430: #-- <optgroup> tag (end tag required)
3431: sub start_optgroup {
3432: my ($target,$token) = @_;
3433: my $currentstring = '';
3434: if ($target eq 'web') {
3435: $currentstring = $token->[4];
3436: }
3437: return $currentstring;
3438: }
3439:
3440: sub end_optgroup {
3441: my ($target,$token) = @_;
3442: my $currentstring = '';
3443: if ($target eq 'web') {
3444: $currentstring = $token->[2];
3445: }
3446: return $currentstring;
3447: }
3448:
3449: #-- <samp> tag (end tag required)
3450: sub start_samp {
3451: my ($target,$token) = @_;
3452: my $currentstring = '';
3453: if ($target eq 'web') {
3454: $currentstring = $token->[4];
3455: } elsif ($target eq 'tex') {
3456: $currentstring='\texttt{';
3457: }
3458: return $currentstring;
3459: }
3460:
3461: sub end_samp {
3462: my ($target,$token) = @_;
3463: my $currentstring = '';
3464: if ($target eq 'web') {
3465: $currentstring = $token->[2];
3466: } elsif ($target eq 'tex') {
3467: $currentstring='}';
3468: }
3469: return $currentstring;
3470: }
3471:
3472: #-- <server> tag
3473: sub start_server {
3474: my ($target,$token) = @_;
3475: my $currentstring = '';
3476: if ($target eq 'web') {
3477: $currentstring = $token->[4];
3478: }
3479: return $currentstring;
3480: }
3481:
3482: sub end_server {
3483: my ($target,$token) = @_;
3484: my $currentstring = '';
3485: if ($target eq 'web') {
3486: $currentstring = $token->[2];
3487: }
3488: return $currentstring;
3489: }
3490:
3491: #-- <spacer> tag (end tag forbidden)
3492: sub start_spacer {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web') {
3496: $currentstring = $token->[4];
3497: }
3498: return $currentstring;
3499: }
3500:
3501: sub end_spacer {
3502: my ($target,$token) = @_;
3503: my $currentstring = '';
3504: if ($target eq 'web') {
3505: $currentstring = $token->[2];
3506: }
3507: return $currentstring;
3508: }
3509:
3510: #-- <span> tag (end tag required)
3511: sub start_span {
3512: my ($target,$token) = @_;
3513: my $currentstring = '';
3514: if ($target eq 'web') {
3515: $currentstring = $token->[4];
3516: }
3517: return $currentstring;
3518: }
3519:
3520: sub end_span {
3521: my ($target,$token) = @_;
3522: my $currentstring = '';
3523: if ($target eq 'web') {
3524: $currentstring = $token->[2];
3525: }
3526: return $currentstring;
3527: }
3528:
3529: #-- <tbody> tag (end tag optional)
3530: sub start_tbody {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web') {
3534: $currentstring = $token->[4];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: sub end_tbody {
3540: my ($target,$token) = @_;
3541: my $currentstring = '';
3542: if ($target eq 'web') {
3543: $currentstring = $token->[2];
3544: }
3545: return $currentstring;
3546: }
3547:
3548: #-- <tfoot> tag (end tag optional)
3549: sub start_tfoot {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web') {
3553: $currentstring = $token->[4];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: sub end_tfoot {
3559: my ($target,$token) = @_;
3560: my $currentstring = '';
3561: if ($target eq 'web') {
3562: $currentstring = $token->[2];
3563: }
3564: return $currentstring;
3565: }
3566:
3567: #-- <thead> tag (end tag optional)
3568: sub start_thead {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web') {
3572: $currentstring = $token->[4];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: sub end_thead {
3578: my ($target,$token) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web') {
3581: $currentstring = $token->[2];
3582: }
3583: return $currentstring;
3584: }
3585:
3586: #-- <var> tag
3587: sub start_var {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web') {
3591: $currentstring = $token->[4];
3592: } elsif ($target eq 'tex') {
3593: $currentstring = '\textit{';
3594: }
3595: return $currentstring;
3596: }
3597:
3598: sub end_var {
3599: my ($target,$token) = @_;
3600: my $currentstring = '';
3601: if ($target eq 'web') {
3602: $currentstring = $token->[2];
3603: } elsif ($target eq 'tex') {
3604: $currentstring = '}';
3605: }
3606: return $currentstring;
3607: }
3608:
3609: #-- <wbr> tag (end tag forbidden)
3610: sub start_wbr {
3611: my ($target,$token) = @_;
3612: my $currentstring = '';
3613: if ($target eq 'web') {
3614: $currentstring = $token->[4];
3615: }
3616: return $currentstring;
3617: }
3618:
3619: sub end_wbr {
3620: my ($target,$token) = @_;
3621: my $currentstring = '';
3622: if ($target eq 'web') {
3623: $currentstring = $token->[2];
3624: }
3625: return $currentstring;
3626: }
3627:
3628: #-- <hideweboutput> tag
3629: sub start_hideweboutput {
3630: my ($target,$token) = @_;
3631: if ($target eq 'web') {
3632: &Apache::lonxml::startredirection();
3633: }
3634: return '';
3635: }
3636:
3637: sub end_hideweboutput {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web') {
3641: $currentstring = &Apache::lonxml::endredirection();
3642: }
3643: return '';
3644: }
3645:
3646:
3647: sub image_replication {
3648: my $src = shift;
3649: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3650: #replicates eps or ps
3651: my $epssrc = my $pssrc = $src;
3652: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3653: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3654: if (not -e $epssrc && not -e $pssrc) {
3655: my $result=&Apache::lonnet::repcopy($epssrc);
3656: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3657: }
3658: return '';
3659: }
3660:
3661: sub image_size {
3662: my ($src,$scaling,$parstack,$safeeval)=@_;
3663: #size of image from gif/jpg/jpeg/png
3664: my $image = Image::Magick->new;
3665: my $current_figure = $image->Read($src);
3666: my $width_param = $image->Get('width') * $scaling;;
3667: my $height_param = $image->Get('height') * $scaling;;
3668: undef $image;
3669: #do we have any specified LaTeX size of the picture?
3670: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3671: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3672: #do we have any specified web size of the picture?
3673: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3674: undef,1);
3675: if ($TeXwidth ne '') {
3676: if ($TeXwidth=~/(\d+)\s*\%/) {
3677: $width_param = $1*$ENV{'form.textwidth'}/100;
3678: } else {
3679: $width_param = $TeXwidth;
3680: }
3681: } elsif ($TeXheight ne '') {
3682: $width_param = $TeXheight/$height_param*$width_param;
3683: } elsif ($width ne '') {
3684: $width_param = $width*$scaling;
3685: }
3686: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3687: return $width_param;
3688: }
3689:
3690: sub eps_generation {
3691: my ($src,$file,$width_param) = @_;
3692: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3693: my $temp_file = Apache::File->new('>>'.$filename);
3694: print $temp_file "$src\n";
3695: my $newsrc = $src;
3696: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3697: $newsrc=~s/\/home\/httpd\/html\/res//;
3698: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3699: $newsrc=~s/\/\.\//\//;
3700: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3701: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3702: $newsrc=~s/\/home\/httpd\/lonUsers//;
3703: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3704: }
3705: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3706: }
3707:
3708: sub file_path {
3709: my $src=shift;
3710: my ($file,$path);
3711: if ($src =~ m!(.*)/([^/]*)$!) {
3712: $file = $2;
3713: $path = $1.'/';
3714: }
3715: return $file,$path;
3716: }
3717:
3718: sub recalc {
3719: my $argument = shift;
3720: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3721: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3722: my $value=$1;
3723: my $units=$2;
3724: if ($units eq 'cm') {
3725: $value*=10;
3726: } elsif ($units eq 'in') {
3727: $value*=25.4;
3728: } elsif ($units eq 'pc') {
3729: $value*=(25.4*12/72.27);
3730: } elsif ($units eq 'pt') {
3731: $value*=(25.4/72.27);
3732: }
3733: return $value.' mm';
3734: }
3735:
3736: sub LATEX_length {
3737: my $garbage=shift;
3738: $garbage=~s/^\s+$//;
3739: $garbage=~s/^\s+(\S.*)/$1/;#space before
3740: $garbage=~s/(.*\S)\s+$/$1/;#space after
3741: $garbage=~s/(\s)+/$1/;#only one space
3742: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3743: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3744: $garbage=~s/([^\\])\$/$1/g;#$
3745: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3746: $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;
3747: $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;
3748: $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;
3749: $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;
3750: $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;
3751: $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;
3752: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3753: #remove some other LaTeX command
3754: $garbage=~s|\\(\w+)\\|\\|g;
3755: $garbage=~s|\\(\w+)(\s*)|$2|g;
3756: $garbage=~s|\+|11|g;
3757: my $value=length($garbage);
3758: return $value;
3759: }
3760:
3761:
3762:
3763:
3764: 1;
3765: __END__
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