1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.243 2004/10/18 22:02:02 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: undef(@Apache::londefdef::description);
67: @Apache::londefdef::DD=(0);
68: @Apache::londefdef::DT=(0);
69: $Apache::londefdef::list_index=0;
70: }
71:
72: #======================= TAG SUBROUTINES =====================
73: #-- <output>
74: sub start_output {
75: my ($target) = @_;
76: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
77: return '';
78: }
79: sub end_output {
80: my ($target) = @_;
81: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
82: return '';
83: }
84: #-- <m> tag
85: sub start_m {
86: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
87: my $currentstring = '';
88: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
89: if ($target eq 'web' || $target eq 'analyze') {
90: $inside ='\\documentstyle{article}'.$inside;
91: &Apache::lonxml::debug("M is starting with:$inside:");
92: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
93: if ($eval eq 'on') {
94: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
95: #&Apache::lonxml::debug("M is evaulated to:$inside:");
96: }
97: $currentstring = &Apache::lontexconvert::converted(\$inside);
98: if ($Apache::lontexconvert::errorstring) {
99: &Apache::lonxml::warning("tth error: ".
100: $Apache::lontexconvert::errorstring);
101: $Apache::lontexconvert::errorstring='';
102: }
103: #&Apache::lonxml::debug("M is ends with:$currentstring:");
104: $Apache::lonxml::post_evaluate=0;
105: } elsif ($target eq 'tex') {
106: $currentstring = $inside;
107: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
108: if ($eval eq 'on') {
109: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
110: }
111: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
112: $Apache::lonxml::post_evaluate=0;
113: }
114: return $currentstring;
115: }
116:
117: sub end_m {
118: my ($target,$token) = @_;
119: my $currentstring = '';
120: if ($target eq 'tex') {
121: $currentstring = "";
122: }
123: return $currentstring;
124: }
125:
126: sub start_tthoption {
127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
128: my $result;
129: if ($target eq 'web') {
130: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
131: $inside=~s/^\s*//;
132: if ($ENV{'browser.mathml'}) {
133: &tth::ttmoptions($inside);
134: } else {
135: &tth::tthoptions($inside);
136: }
137: }
138: return $result;
139: }
140:
141: sub end_tthoption {
142: my ($target,$token) = @_;
143: my $result;
144: return $result;
145: }
146:
147: #-- <html> tag (end tag optional)
148: sub start_html {
149: my ($target,$token) = @_;
150: my $currentstring = '';
151: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
152: &Apache::lontexconvert::init_tth();
153: if ($target eq 'web' || $target eq 'edit') {
154: $currentstring = &Apache::lonxml::xmlbegin();
155: } elsif ($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].&Apache::lonxml::fontsettings();
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,0);
1489: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1490: #FIXME need to support types i and I
1491: if ($type=~/disc/) {
1492: $currentstring .= ' \item[$\bullet$] ';
1493: } elsif ($type=~/circle/) {
1494: $currentstring .= ' \item[$\circ$] ';
1495: } elsif ($type=~/square/) {
1496: $currentstring .= ' \item[$\diamond$] ';
1497: } elsif ($type eq '1') {
1498: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1499: } elsif ($type eq 'A') {
1500: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1501: } elsif ($type eq 'a') {
1502: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1503: } elsif ($value ne '') {
1504: $currentstring .= ' \item['.$value.'] ';
1505: } else {
1506: $currentstring .= ' \item ';
1507: }
1508: $Apache::londefdef::list_index++;
1509: }
1510: return $currentstring;
1511: }
1512:
1513: sub end_li {
1514: my ($target,$token) = @_;
1515: my $currentstring = '';
1516: if ($target eq 'web') {
1517: $currentstring = $token->[2];
1518: }
1519: return $currentstring;
1520: }
1521:
1522: #-- <u> tag (end tag required)
1523: sub start_u {
1524: my ($target,$token) = @_;
1525: my $currentstring = '';
1526: if ($target eq 'web') {
1527: $currentstring .= $token->[4];
1528: } elsif ($target eq 'tex') {
1529: &Apache::lonxml::startredirection();
1530: }
1531: return $currentstring;
1532: }
1533:
1534: sub end_u {
1535: my ($target,$token) = @_;
1536: my $currentstring = '';
1537: if ($target eq 'web') {
1538: $currentstring .= $token->[2];
1539: } elsif ($target eq 'tex') {
1540: $currentstring=&Apache::lonxml::endredirection();
1541: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1542: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1543: $currentstring=~s/(\S)\s*$/$1\}/;
1544: }
1545: return $currentstring;
1546: }
1547:
1548: #-- <ul> tag (end tag required)
1549: sub start_ul {
1550: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1551: my $currentstring = '';
1552: if ($target eq 'web') {
1553: $currentstring = $token->[4];
1554: } elsif ($target eq 'tex') {
1555: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1556: $Apache::londefdef::list_index=0;
1557: if ($TeXtype eq 'disc') {
1558: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1559: '\renewcommand{\labelitemii}{$\bullet$}'.
1560: '\renewcommand{\labelitemiii}{$\bullet$}'.
1561: '\renewcommand{\labelitemiv}{$\bullet$}';
1562: } elsif ($TeXtype eq 'circle') {
1563: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1564: '\renewcommand{\labelitemii}{$\circ$}'.
1565: '\renewcommand{\labelitemiii}{$\circ$}'.
1566: '\renewcommand{\labelitemiv}{$\circ$}';
1567: } elsif ($TeXtype eq 'square') {
1568: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1569: '\renewcommand{\labelitemii}{$\diamond$}'.
1570: '\renewcommand{\labelitemiii}{$\diamond$}'.
1571: '\renewcommand{\labelitemiv}{$\diamond$}';
1572: }
1573: $currentstring .= '\strut \begin{itemize}';
1574: }
1575: return $currentstring;
1576: }
1577:
1578: sub end_ul {
1579: my ($target,$token) = @_;
1580: my $currentstring = '';
1581: if ($target eq 'web') {
1582: $currentstring = $token->[2];
1583: } elsif ($target eq 'tex') {
1584: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1585: '\renewcommand{\labelitemii}{$\bullet$}'.
1586: '\renewcommand{\labelitemiii}{$\bullet$}'.
1587: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1588: }
1589: return $currentstring;
1590: }
1591:
1592: #-- <menu> tag (end tag required)
1593: sub start_menu {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web') {
1597: $currentstring = $token->[4];
1598: } elsif ($target eq 'tex') {
1599: $currentstring = " \\begin{itemize} ";
1600: }
1601: return $currentstring;
1602: }
1603:
1604: sub end_menu {
1605: my ($target,$token) = @_;
1606: my $currentstring = '';
1607: if ($target eq 'web') {
1608: $currentstring = $token->[2];
1609: } elsif ($target eq 'tex') {
1610: $currentstring = " \\end{itemize}";
1611: }
1612: return $currentstring;
1613: }
1614:
1615: #-- <dir> tag (end tag required)
1616: sub start_dir {
1617: my ($target,$token) = @_;
1618: my $currentstring = '';
1619: if ($target eq 'web') {
1620: $currentstring = $token->[4];
1621: } elsif ($target eq 'tex') {
1622: $currentstring = " \\begin{itemize} ";
1623: }
1624: return $currentstring;
1625: }
1626:
1627: sub end_dir {
1628: my ($target,$token) = @_;
1629: my $currentstring = '';
1630: if ($target eq 'web') {
1631: $currentstring = $token->[2];
1632: } elsif ($target eq 'tex') {
1633: $currentstring = " \\end{itemize}";
1634: }
1635: return $currentstring;
1636: }
1637:
1638: #-- <ol> tag (end tag required)
1639: sub start_ol {
1640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1641: my $currentstring = '';
1642: if ($target eq 'web') {
1643: $currentstring = $token->[4];
1644: } elsif ($target eq 'tex') {
1645: $Apache::londefdef::list_index=0;
1646: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1647: if ($type eq '1') {
1648: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1649: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1650: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1651: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1652: } elsif ($type eq 'A') {
1653: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1654: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1655: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1656: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1657: } elsif ($type eq 'a') {
1658: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1659: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1660: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1661: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1662: } elsif ($type eq 'i') {
1663: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1664: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1665: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1666: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1667: } elsif ($type eq 'I') {
1668: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1669: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1670: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1671: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1672: }
1673: $currentstring .= '\strut \begin{enumerate}';
1674: }
1675: return $currentstring;
1676: }
1677:
1678: sub end_ol {
1679: my ($target,$token) = @_;
1680: my $currentstring = '';
1681: if ($target eq 'web') {
1682: $currentstring = $token->[2];
1683: } elsif ($target eq 'tex') {
1684: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1685: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1686: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1687: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1688: }
1689: return $currentstring;
1690: }
1691:
1692: #-- <dl> tag (end tag required)
1693: sub start_dl {
1694: my ($target,$token) = @_;
1695: my $currentstring = '';
1696: if ($target eq 'web') {
1697: $currentstring = $token->[4];
1698: } elsif ($target eq 'tex') {
1699: $currentstring = '\begin{description}';
1700: $Apache::londefdef::DL++;
1701: push(@Apache::londefdef::description,[]);
1702: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1703: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1704: }
1705: return $currentstring;
1706: }
1707:
1708: sub end_dl {
1709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1710: my $currentstring = '';
1711: if ($target eq 'web') {
1712: $currentstring = $token->[2];
1713: } elsif ($target eq 'tex') {
1714: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1715: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1716: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1717: $currentstring.=' '.$element.' ';
1718: }
1719: pop(@Apache::londefdef::description);
1720: $currentstring.='\end{description}';
1721: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1722: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1723: $Apache::londefdef::DL--;
1724: }
1725: return $currentstring;
1726: }
1727:
1728: #-- <dt> tag (end tag optional)
1729: sub start_dt {
1730: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1731: my $currentstring='';
1732: if ($target eq 'web') {
1733: $currentstring = $token->[4];
1734: } elsif ($target eq 'tex') {
1735: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1736: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1737: &Apache::lonxml::startredirection();
1738: $Apache::londefdef::DT[-1]++;
1739: }
1740: return $currentstring;
1741: }
1742:
1743: sub end_dt {
1744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1745: my $currentstring = '';
1746: if ($target eq 'web') {
1747: $currentstring = $token->[2];
1748: } elsif ($target eq 'tex') {
1749: if ($Apache::londefdef::DT[-1]) {
1750: my $data=&item_cleanup();
1751: push(@{$Apache::londefdef::description[-1]},'\item['.$data.']');
1752: $Apache::londefdef::DT[-1]--;
1753: }
1754: }
1755: return $currentstring;
1756: }
1757:
1758: sub item_cleanup {
1759: my $item=&Apache::lonxml::endredirection();
1760: $item=~s/\\begin{center}//g;
1761: $item=~s/\\end{center}//g;
1762: return $item;
1763: }
1764:
1765: #-- <dd> tag (end tag optional)
1766: sub start_dd {
1767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1768: my $currentstring = '';
1769: if ($target eq 'web') {
1770: $currentstring = $token->[4];
1771: } elsif ($target eq 'tex') {
1772: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1773: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1774: push(@{$Apache::londefdef::description[-1]},'');
1775: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1776: $Apache::londefdef::DD[-1]++;
1777: &Apache::lonxml::startredirection();
1778: }
1779: return $currentstring;
1780: }
1781:
1782: sub end_dd {
1783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1784: my $currentstring = '';
1785: if ($target eq 'web') {
1786: $currentstring = $token->[2];
1787: } elsif ($target eq 'tex') {
1788: $Apache::londefdef::description[-1]->[-1].=
1789: &Apache::lonxml::endredirection().' \vskip 0mm ';
1790: $Apache::londefdef::DD[-1]--;
1791: }
1792: return $currentstring;
1793: }
1794:
1795: #-- <table> tag (end tag required)
1796: #list of supported attributes: border,width,TeXwidth
1797: sub start_table {
1798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1799: my ($textwidth,$currentstring)=('','');
1800: if ($target eq 'web') {
1801: $currentstring = $token->[4];
1802: } elsif ($target eq 'tex') {
1803: my $aa = {};
1804: push @Apache::londefdef::table, $aa;
1805: $Apache::londefdef::table[-1]{'row_number'} = -1;
1806: #maximum table's width (default coincides with text line length)
1807: if ($#Apache::londefdef::table==0) {
1808: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1809: $textwidth=~/(\d+\.?\d*)/;
1810: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1811: } else {
1812: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1813: #the maximum width of nested table is determined by LATeX width of parent cell
1814: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1815: } else {
1816: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1817: $textwidth=$Apache::londefdef::table[-2]{'width'};
1818: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1819: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1820: }
1821: }
1822: }
1823: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1824: if (not defined $TeXwidth) {
1825: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1826: if ($htmlwidth=~/%/) {
1827: $Apache::londefdef::table[-1]{'percent'}=1;
1828: $htmlwidth=~/(\d+)/;
1829: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1830: } else {
1831: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1832: }
1833: } elsif ($TeXwidth=~/%/) {
1834: $Apache::londefdef::table[-1]{'percent'}=1;
1835: $TeXwidth=~/(\d+)/;
1836: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1837: } else {
1838: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1839: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1840: }
1841: #table's border
1842: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1843: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1844: unless (defined $border) { $border = 0; }
1845: if ($border) {
1846: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1847: $Apache::londefdef::table[-1]{'vinc'} = '&';
1848: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1849: } else {
1850: $Apache::londefdef::table[-1]{'hinc'} = '';
1851: $Apache::londefdef::table[-1]{'vinc'} = '&';
1852: $Apache::londefdef::table[-1]{'vvinc'} = '';
1853: }
1854: if ($#Apache::londefdef::table==0) {
1855: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1856: }
1857: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1858: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1859: $Apache::londefdef::table[-1]{'objectlen'}=[];
1860: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1861: $Apache::londefdef::table[-1]{'maxlen'}=[];
1862: $Apache::londefdef::table[-1]{'minlen'}=[];
1863: $Apache::londefdef::table[-1]{'content'}=[];
1864: $Apache::londefdef::table[-1]{'align'}=[];
1865: $currentstring='\keephidden{NEW TABLE ENTRY}';
1866: }
1867: return $currentstring;
1868: }
1869:
1870: sub end_table {
1871: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1872: my $currentstring = '';
1873: if ($target eq 'web') {
1874: $currentstring = $token->[2];
1875: } elsif ($target eq 'tex') {
1876: my $inmemory = '';
1877: my $output = '';
1878: my $WARNING='';
1879: #width of columns from TeXwidth attributes
1880: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1881: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1882: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1883: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1884: }
1885: }
1886: }
1887: #free space and number of empty columns
1888: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1889: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1890: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1891: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1892: $empty_columns++;
1893: } else {
1894: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1895: }
1896: }
1897: #boundaries for contents columns
1898: my @min_len=();#columns can not be narrower
1899: my @max_len=();#maximum length of column
1900: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1901: my ($localmin,$localmax)=(0,0);
1902: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1903: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1904: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1905: }
1906: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1907: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1908: }
1909: }
1910: push @min_len, $localmin;
1911: push @max_len, $localmax;
1912: }
1913: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1914: my $localmin=0,;
1915: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1916: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1917: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1918: }
1919: }
1920: if ($max_len[$jn]<$localmin) {
1921: $max_len[$jn]=$localmin;
1922: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1923: }#object size is bigger
1924: if ($min_len[$jn]<$localmin) {
1925: $min_len[$jn]=$localmin;
1926: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1927: }#object size is bigger
1928: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1929: $min_len[$jn]=0;
1930: $max_len[$jn]=0;
1931: }
1932: }
1933: #final adjustment of column width
1934: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1935: my @adjust=();
1936: #step 1. adjustment by maximum value
1937: my $space_neeeded=0;
1938: for (my $jn=0;$jn<=$#max_len;$jn++) {
1939: $space_neeeded=$space_neeeded+$max_len[$jn];
1940: }
1941: if ($space_neeeded<=$available_space) {
1942: for (my $jn=0;$jn<=$#max_len;$jn++) {
1943: if ($fwidth[$jn]==0) {
1944: $fwidth[$jn]=$max_len[$jn];
1945: }
1946: }
1947: } else {
1948: #step 2. adjustment by minimum value (estimation)
1949: $space_neeeded=0;
1950: for (my $jn=0;$jn<=$#min_len;$jn++) {
1951: $space_neeeded+=$min_len[$jn];
1952: }
1953: if ($space_neeeded>$available_space) {
1954: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1955: for (my $jn=0;$jn<=$#max_len;$jn++) {
1956: if ($fwidth[$jn]==0) {
1957: $fwidth[$jn]=$min_len[$jn];
1958: }
1959: }
1960: #check if we have objects which can be scaled
1961: my $how_many_to_scale=0;
1962: my @to_scale=();
1963: for (my $jn=0;$jn<=$#max_len;$jn++) {
1964: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1965: $how_many_to_scale++;
1966: push @to_scale, $jn;
1967: }
1968: }
1969: if ($how_many_to_scale>0) {
1970: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1971: foreach my $jn (@to_scale) {
1972: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1973: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1974: if ($1 ne '') {
1975: my $current_length=&recalc($1);
1976: $current_length=~/(\d+\.?\d*)/;
1977: $current_length=$current_length-$space_to_adjust;
1978: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1979: }
1980: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1981: if ($1 ne '') {
1982: my $current_length=$1;
1983: $current_length=$current_length-$space_to_adjust;
1984: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
1985: }
1986: }
1987: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
1988: }
1989: }
1990: } else {
1991: #step 3. adjustment over minimal + corrections
1992: my $enlarge_coef=$available_space/$space_neeeded;
1993: my $acsessive=0;
1994: for (my $jn=0;$jn<=$#min_len;$jn++) {
1995: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1996: if ($adjust[$jn]>$max_len[$jn]) {
1997: $fwidth[$jn]=$max_len[$jn];
1998: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1999: $adjust[$jn]=0;
2000: }
2001: }
2002: if ($acsessive>0) {
2003: #we have an excess of space and can redistribute it
2004: my $notempty_columns=0;
2005: for (my $jn=0;$jn<=$#min_len;$jn++) {
2006: if ($adjust[$jn]!=0) {
2007: $notempty_columns++;
2008: }
2009: }
2010: my $per_column=$acsessive/$notempty_columns;
2011: for (my $jn=0;$jn<=$#min_len;$jn++) {
2012: if ($adjust[$jn]!=0) {
2013: $adjust[$jn]+=$per_column;
2014: $fwidth[$jn]=$adjust[$jn];
2015: }
2016: }
2017: } else {
2018: for (my $jn=0;$jn<=$#min_len;$jn++) {
2019: $fwidth[$jn]=$adjust[$jn];
2020: }
2021: }
2022: }
2023: }
2024: #use all available width if it is defined in % or as TeXwidth
2025: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2026: my $current=0;
2027: for (my $i=0;$i<=$#fwidth;$i++) {
2028: $current+=$fwidth[$i];
2029: }
2030: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2031: for (my $i=0;$i<=$#fwidth;$i++) {
2032: $fwidth[$i]*=$coef;
2033: }
2034: }
2035: #removing of empty columns if allowed
2036: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2037: if ($permission eq 'yes') {
2038: my @cleaned_table=();
2039: my @cleaned_header=();
2040: my $colind=0;
2041: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2042: if ($fwidth[$jn]!=0) {
2043: #we need to copy column
2044: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2045: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2046: $cleaned_header[$colind]=$fwidth[$jn];
2047: }
2048: $colind++;
2049: }
2050: }
2051: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2052: @fwidth=@cleaned_header;
2053: }
2054: #construct header of the table
2055: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2056: for (my $in=0;$in<=$#fwidth;$in++) {
2057: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2058: }
2059: $header_of_table .= '}';
2060: #fill the table
2061: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2062: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2063: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2064: $output.='\vspace*{-6 mm}\begin{center}';
2065: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2066: $output.=' \hfill \llap{'
2067: }
2068: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2069: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2070: $output.='\end{center}\vspace*{-6 mm}';
2071: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2072: $output.='} ';
2073: }
2074: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2075: }
2076: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2077: }
2078: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2079: if ($#Apache::londefdef::table > 0) {
2080: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2081: pop @Apache::londefdef::table;
2082: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2083: } else {
2084: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2085: pop @Apache::londefdef::table;
2086: undef @Apache::londefdef::table;
2087: }
2088: }
2089: return $currentstring;
2090: }
2091:
2092: #-- <tr> tag (end tag optional)
2093: sub start_tr {
2094: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2095: my $currentstring = '';
2096: if ($target eq 'web') {
2097: $currentstring = $token->[4];
2098: } elsif ($target eq 'tex') {
2099: $Apache::londefdef::table[-1]{'row_number'}++;
2100: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2101: if ($alignchar ne '') {
2102: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2103: } else {
2104: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2105: }
2106: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2107: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2108: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2109: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2110: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2111: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2112: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2113: }
2114: return $currentstring;
2115: }
2116:
2117: sub end_tr {
2118: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2119: my $currentstring = '';
2120: if ($target eq 'web') {
2121: $currentstring = $token->[2];
2122: } elsif ($target eq 'tex') {
2123: if ($Apache::londefdef::TD_redirection) {
2124: &end_td_tex($parstack,$parser,$safeeval);
2125: }
2126: }
2127: return $currentstring;
2128: }
2129:
2130: #-- <td> tag (end tag optional)
2131: sub start_td {
2132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2133: my $currentstring = '';
2134: if ($target eq 'web') {
2135: $currentstring = $token->[4];
2136: } elsif ($target eq 'tex') {
2137: $Apache::londefdef::TD_redirection = 1;
2138: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2139: }
2140: return $currentstring;
2141: }
2142:
2143: sub tag_check {
2144: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2145: my @ar=@$parstack;
2146: for (my $i=$#ar-1;$i>=0;$i--) {
2147: if (lc($$tagstack[$i]) eq $good_tag) {
2148: &start_td_tex($parstack,$parser,$safeeval);
2149: last;
2150: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2151: splice @ar, $i+1;
2152: &end_td_tex(\@ar,$parser,$safeeval);
2153: &start_td_tex($parstack,$parser,$safeeval);
2154: last;
2155: }
2156: }
2157: return '';
2158: }
2159:
2160: sub start_td_tex {
2161: my ($parstack,$parser,$safeeval) = @_;
2162: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2163: if ($alignchar eq '') {
2164: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2165: }
2166: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2167: $Apache::londefdef::table[-1]{'counter_columns'}++;
2168: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2169: if (defined $TeXwidth) {
2170: my $current_length=&recalc($TeXwidth);
2171: $current_length=~/(\d+\.?\d*)/;
2172: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2173: }
2174: &Apache::lonxml::startredirection();
2175: return '';
2176: }
2177:
2178: sub end_td_tex {
2179: my ($parstack,$parser,$safeeval) = @_;
2180: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2181: my $data=&Apache::lonxml::endredirection();
2182: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2183: if (defined $TeXwidth) {
2184: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2185: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2186: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2187: } else {
2188: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2189: my $garbage_data=$data;
2190: my $fwidth=0;
2191: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2192: my $current_length=&recalc($1);
2193: $current_length=~/(\d+\.?\d*)/;
2194: if ($fwidth<$1) {$fwidth=$1;}
2195: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2196: }
2197: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2198: my $current_length=$1;
2199: if ($fwidth<$current_length) {$fwidth=$current_length;}
2200: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2201: }
2202: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2203: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2204: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2205: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: } elsif ($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)*/) {
2207: my $garbage_data=$data;
2208: my $fwidth=0;
2209: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2210: my $current_length=&recalc($1);
2211: $current_length=~/(\d+\.?\d*)/;
2212: if ($fwidth<$1) {$fwidth=$1;}
2213: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2214: }
2215: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2216: my $current_length=&recalc($1);
2217: $current_length=~/(\d+\.?\d*)/;
2218: if ($fwidth<$1) {$fwidth=$1;}
2219: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2220: }
2221: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2222: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2223: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2224: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2225: $data=~s/\\\\\s*$//;
2226: } else {
2227: $data=~s/^\s+(\S.*)/$1/;
2228: $data=~s/(.*\S)\s+$/$1/;
2229: $data=~s/(\s)+/$1/;
2230: my ($current_length,$min_length)=(0,0);
2231: if ($data=~/\\vskip/) {
2232: my $newdata=$data;
2233: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2234: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2235: foreach my $elementdata (@newdata) {
2236: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2237: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2238: my @words=split(/ /,$elementdata);
2239: foreach my $word (@words) {
2240: my $lengthword=2.5*&LATEX_length($word);
2241: if ($min_length<$lengthword) {$min_length=$lengthword;}
2242: }
2243: }
2244: } else {
2245: $current_length=2.5*&LATEX_length($data);
2246: my @words=split(/ /,$data);
2247: foreach my $word (@words) {
2248: my $lengthword=2*&LATEX_length($word);
2249: if ($min_length<$lengthword) {$min_length=$lengthword;}
2250: }
2251: }
2252: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2253: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2254: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2255: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2256: }
2257: }
2258: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2259: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2260: }
2261: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2262: return'';
2263: }
2264:
2265: sub end_td {
2266: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2267: my $currentstring = '';
2268: if ($target eq 'web') {
2269: $currentstring = $token->[2];
2270: } elsif ($target eq 'tex') {
2271: $Apache::londefdef::TD_redirection =0;
2272: &end_td_tex($parstack,$parser,$safeeval);
2273: }
2274: return $currentstring;
2275: }
2276:
2277: #-- <th> tag (end tag optional)
2278: sub start_th {
2279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2280: my $currentstring = '';
2281: if ($target eq 'web') {
2282: $currentstring = $token->[4];
2283: } elsif ($target eq 'tex') {
2284: $Apache::londefdef::TD_redirection = 1;
2285: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2286: }
2287: return $currentstring;
2288: }
2289:
2290: sub tagg_check {
2291: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2292: my @ar=@$parstack;
2293: for (my $i=$#ar-1;$i>=0;$i--) {
2294: if (lc($$tagstack[$i]) eq $good_tag) {
2295: &start_th_tex($parstack,$parser,$safeeval);
2296: last;
2297: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2298: splice @ar, $i+1;
2299: &end_th_tex(\@ar,$parser,$safeeval);
2300: &start_th_tex($parstack,$parser,$safeeval);
2301: last;
2302: }
2303: }
2304: return '';
2305: }
2306:
2307: sub start_th_tex {
2308: my ($parstack,$parser,$safeeval) = @_;
2309: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2310: if ($alignchar eq '') {
2311: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2312: }
2313: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2314: $Apache::londefdef::table[-1]{'counter_columns'}++;
2315: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2316: if (defined $TeXwidth) {
2317: my $current_length=&recalc($TeXwidth);
2318: $current_length=~/(\d+\.?\d*)/;
2319: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2320: }
2321: &Apache::lonxml::startredirection();
2322: return '';
2323: }
2324:
2325: sub end_th_tex {
2326: my ($parstack,$parser,$safeeval) = @_;
2327: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2328: my $data=&Apache::lonxml::endredirection();
2329: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2330: if (defined $TeXwidth) {
2331: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2332: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2333: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2334: } else {
2335: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2336: my $garbage_data=$data;
2337: my $fwidth=0;
2338: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2339: my $current_length=&recalc($1);
2340: $current_length=~/(\d+\.?\d*)/;
2341: if ($fwidth<$1) {$fwidth=$1;}
2342: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2343: }
2344: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2345: my $current_length=$1;
2346: if ($fwidth<$current_length) {$fwidth=$current_length;}
2347: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2348: }
2349: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2350: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2351: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2352: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: } else {
2354: $data=~s/^\s+(\S.*)/$1/;
2355: $data=~s/(.*\S)\s+$/$1/;
2356: $data=~s/(\s)+/$1/;
2357: my ($current_length,$min_length)=(0,0);
2358: if ($data=~/\\vskip/) {
2359: my $newdata=$data;
2360: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2361: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2362: foreach my $elementdata (@newdata) {
2363: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2364: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2365: my @words=split(/ /,$elementdata);
2366: foreach my $word (@words) {
2367: my $lengthword=2.5*&LATEX_length($word);
2368: if ($min_length<$lengthword) {$min_length=$lengthword;}
2369: }
2370: }
2371: } else {
2372: $current_length=2.5*&LATEX_length($data);
2373: my @words=split(/ /,$data);
2374: foreach my $word (@words) {
2375: my $lengthword=2*&LATEX_length($word);
2376: if ($min_length<$lengthword) {$min_length=$lengthword;}
2377: }
2378: }
2379: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2380: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2381: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2382: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2383: }
2384: }
2385: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2386: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2387: }
2388: #make data bold
2389: $data='\textbf{'.$data.'}';
2390: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2391: return'';
2392: }
2393:
2394: sub end_th {
2395: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2396: my $currentstring = '';
2397: if ($target eq 'web') {
2398: $currentstring = $token->[2];
2399: } elsif ($target eq 'tex') {
2400: $Apache::londefdef::TD_redirection =0;
2401: &end_th_tex($parstack,$parser,$safeeval);
2402: }
2403: return $currentstring;
2404: }
2405:
2406: #-- <img> tag (end tag forbidden)
2407: sub start_img {
2408: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2409: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2410: undef,1);
2411: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2412: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2413: return '';
2414: }
2415: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2416: my $currentstring = '';
2417: my $scaling = .3;
2418: if ($target eq 'web') {
2419: if ($ENV{'browser.imagesuppress'} ne 'on') {
2420: $currentstring.= $token->[4];
2421: } else {
2422: my $alttag= &Apache::lonxml::get_param
2423: ('alt',$parstack,$safeeval,undef,1);
2424: unless ($alttag) {
2425: $alttag=&Apache::lonmeta::alttag
2426: ($Apache::lonxml::pwd[-1],$src);
2427: }
2428: $currentstring.='[IMAGE: '.$alttag.']';
2429: }
2430: } elsif ($target eq 'tex') {
2431: my $oldSRC=$src;
2432: $oldSRC=~s/\.(gif|jpg|png)$/\.eps/;
2433: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2434: #if original gif/jpg/png file exist do following:
2435: if (-e $src) {
2436: #what is the image size?
2437: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2438: my ($file,$path)=&file_path($src);
2439: my $newsrc = $src;
2440: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2441: &Apache::lonnet::repcopy($oldSRC);
2442: $file=~s/\.(gif|jpg|png)$/.eps/i;
2443: #where can we find the picture?
2444: if (-e $newsrc) {
2445: #eps counterpart for image exist
2446: if ($path) {
2447: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2448: }
2449: } else {
2450: #there is no eps counterpart for image - check for ps one
2451: $newsrc =~ s/\.eps$/\.ps/;
2452: if (-e $newsrc) {
2453: #ps counterpart for image exist
2454: $file =~ s/\.eps$/\.ps/;
2455: if ($path) {
2456: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2457: }
2458: } else {
2459: #care about eps dynamical generation
2460: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2461: }
2462: }
2463: } else {
2464: #original image file doesn't exist so check the alt attribute
2465: my $alt =
2466: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2467: unless ($alt) {
2468: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2469: }
2470:
2471: if ($alt) {
2472: $currentstring .= ' '.$alt.' ';
2473: } else {
2474: #<allow> tag will care about replication
2475: }
2476: }
2477: } elsif ($target eq 'edit') {
2478: $currentstring .=&Apache::edit::tag_start($target,$token);
2479: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2480: &Apache::edit::browse('src',undef,'alt').' '.
2481: &Apache::edit::search('src',undef,'alt').'<br />';
2482: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2483: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2484: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2485: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2486: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2487: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2488: ['','bottom','middle','top','left','right'],$token,5);
2489: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2490: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2491: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2492: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2493: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2494: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2495: if ($width) { $currentstring.=' width="'.$width.'" '; }
2496: if ($height) { $currentstring.=' height="'.$height.'" '; }
2497: $currentstring .= ' />';
2498: } elsif ($target eq 'modified') {
2499: my ($osrc,$owidth,$oheight)=
2500: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2501: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2502: $safeeval,'src','alt','align',
2503: 'TeXwidth','TeXheight',
2504: 'width','height');
2505: my ($nsrc,$nwidth,$nheight)=
2506: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2507: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2508: &image_replication($loc);
2509: my ($iwidth,$iheight);
2510: if (-e $loc) {
2511: my $image = Image::Magick->new;
2512: $image->Read($loc);
2513: ($iwidth, $iheight) = ($image->Get('width'),
2514: $image->Get('height'));
2515: }
2516: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2517: # changed image or no size specified,
2518: # if they didn't explicitly change the
2519: # width or height use the ones from the image
2520: if ($iwidth && $iheight) {
2521: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2522: $token->[2]{'width'} = $iwidth;$ctag=1;
2523: }
2524: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2525: $token->[2]{'height'}=$iheight;$ctag=1;
2526: }
2527: }
2528: }
2529: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2530: # if we don't have a width or height
2531: if ($iwidth && $cwidth && !$cheight) {
2532: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2533: }
2534: if ($iheight && $cheight && !$cwidth) {
2535: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2536: }
2537: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2538: }
2539: return $currentstring;
2540: }
2541:
2542: sub end_img {
2543: my ($target,$token) = @_;
2544: my $currentstring = '';
2545: if ($target eq 'web') {
2546: $currentstring = $token->[2];
2547: } elsif ($target eq 'tex') {
2548: $currentstring = '';
2549: }
2550: return $currentstring;
2551: }
2552:
2553: #-- <applet> tag (end tag required)
2554: sub start_applet {
2555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2556:
2557: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2558: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2559:
2560: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2561: undef,1);
2562: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2563:
2564: my $currentstring = '';
2565: if ($target eq 'web') {
2566: if ($ENV{'browser.appletsuppress'} ne 'on') {
2567: $currentstring = $token->[4];
2568: } else {
2569: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2570: $safeeval,undef,1);
2571: unless ($alttag) {
2572: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2573: $code);
2574: }
2575: $currentstring='[APPLET: '.$alttag.']';
2576: }
2577: } elsif ($target eq 'tex') {
2578: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2579: $safeeval,undef,1);
2580: unless ($alttag) {
2581: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2582: undef,1);
2583: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2584: $code);
2585: }
2586: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2587: '.}\end{center}';
2588: }
2589: return $currentstring;
2590: }
2591:
2592: sub end_applet {
2593: my ($target,$token) = @_;
2594: my $currentstring = '';
2595: if ($target eq 'web') {
2596: $currentstring = $token->[2];
2597: } elsif ($target eq 'tex') {
2598: }
2599: return $currentstring;
2600: }
2601:
2602: #-- <embed> tag (end tag optional/required)
2603: sub start_embed {
2604: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2605: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2606: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2607: my $currentstring = '';
2608: if ($target eq 'web') {
2609: if ($ENV{'browser.embedsuppress'} ne 'on') {
2610: $currentstring = $token->[4];
2611: } else {
2612: my $alttag=&Apache::lonxml::get_param
2613: ('alt',$parstack,$safeeval,undef,1);
2614: unless ($alttag) {
2615: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2616: }
2617: $currentstring='[EMBED: '.$alttag.']';
2618: }
2619: } elsif ($target eq 'tex') {
2620: }
2621: return $currentstring;
2622: }
2623:
2624: sub end_embed {
2625: my ($target,$token) = @_;
2626: my $currentstring = '';
2627: if ($target eq 'web') {
2628: $currentstring = $token->[2];
2629: } elsif ($target eq 'tex') {
2630: }
2631: return $currentstring;
2632: }
2633:
2634: #-- <param> tag (end tag forbidden)
2635: sub start_param {
2636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2637: if (&Apache::lonxml::get_param
2638: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2639: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2640: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2641: }
2642: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2643: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2644: my $currentstring = '';
2645: if ($target eq 'web') {
2646: $currentstring = $token->[4];
2647: } elsif ($target eq 'tex') {
2648: }
2649: return $currentstring;
2650: }
2651:
2652: sub end_param {
2653: my ($target,$token) = @_;
2654: my $currentstring = '';
2655: if ($target eq 'web') {
2656: $currentstring = $token->[2];
2657: } elsif ($target eq 'tex') {
2658: }
2659: return $currentstring;
2660: }
2661:
2662: #-- <allow> tag
2663: sub start_allow {
2664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2665: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2666: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2667: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2668: &Apache::lonnet::clutter($src);
2669: if ($target eq 'tex') { &image_replication($src); }
2670: my $result;
2671: if ($target eq 'edit') {
2672: $result .=&Apache::edit::tag_start($target,$token);
2673: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2674: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2675: } elsif ($target eq 'modified') {
2676: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2677: $safeeval,'src');
2678: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2679: }
2680: return $result;
2681: }
2682:
2683: sub end_allow {
2684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2685: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2686: return '';
2687: }
2688:
2689: #-- Frames (end tag required)
2690: #-- <frameset>
2691: sub start_frameset {
2692: my ($target,$token) = @_;
2693: my $currentstring = '';
2694: if ($target eq 'web') {
2695: if (!$Apache::lonxml::registered &&
2696: $ENV{'request.state'} eq 'published') {
2697: $currentstring.='<head>'.
2698: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2699: }
2700: my $onLoad='';
2701: foreach my $key (keys(%{$token->[2]})) {
2702: if ($key =~ /^onload$/i) {
2703: $onLoad.=$token->[2]->{$key}.';';
2704: delete($token->[2]->{$key});
2705: }
2706: }
2707: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2708: my $onUnload='';
2709: foreach my $key (keys(%{$token->[2]})) {
2710: if ($key =~ /^onunload$/i) {
2711: $onUnload.=$token->[2]->{$key}.';';
2712: delete($token->[2]->{$key});
2713: }
2714: }
2715: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2716: ';'.$onUnload;
2717:
2718: $currentstring .= '<'.$token->[1];
2719: foreach (keys %{$token->[2]}) {
2720: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2721: }
2722: $currentstring.='>';
2723: }
2724: return $currentstring;
2725: }
2726:
2727: sub end_frameset {
2728: my ($target,$token) = @_;
2729: my $currentstring = '';
2730: if ($target eq 'web') {
2731: $currentstring = $token->[2];
2732: }
2733: return $currentstring;
2734: }
2735:
2736: #-- <xmp> (end tag required)
2737: sub start_xmp {
2738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2739: my $currentstring = '';
2740: if ($target eq 'web') {
2741: $currentstring .= $token->[4];
2742: } elsif ($target eq 'tex') {
2743: $currentstring .= '\begin{verbatim}';
2744: }
2745: return $currentstring;
2746: }
2747:
2748: sub end_xmp {
2749: my ($target,$token) = @_;
2750: my $currentstring = '';
2751: if ($target eq 'web') {
2752: $currentstring .= $token->[2];
2753: } elsif ($target eq 'tex') {
2754: $currentstring .= '\end{verbatim}';
2755: }
2756: return $currentstring;
2757: }
2758:
2759: #-- <pre> (end tag required)
2760: sub start_pre {
2761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2762: my $currentstring = '';
2763: if ($target eq 'web') {
2764: $currentstring .= $token->[4];
2765: } elsif ($target eq 'tex') {
2766: $currentstring .= '\begin{verbatim}';
2767: }
2768: return $currentstring;
2769: }
2770:
2771: sub end_pre {
2772: my ($target,$token) = @_;
2773: my $currentstring = '';
2774: if ($target eq 'web') {
2775: $currentstring .= $token->[2];
2776: } elsif ($target eq 'tex') {
2777: $currentstring .= '\end{verbatim}';
2778: }
2779: return $currentstring;
2780: }
2781:
2782: #-- <insert>
2783: sub start_insert {
2784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2785: my $currentstring = '';
2786: if ($target eq 'web') {
2787: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2788: $currentstring .= '<b>'.$display.'</b>';;
2789: }
2790: return $currentstring;
2791: }
2792:
2793: sub end_insert {
2794: my ($target,$token) = @_;
2795: my $currentstring = '';
2796: if ($target eq 'web') {
2797: $currentstring .= '';
2798: }
2799: return $currentstring;
2800: }
2801:
2802: #-- <externallink>
2803: sub start_externallink {
2804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2805: my $currentstring = '';
2806: if ($target eq 'web') {
2807: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2808: $currentstring .= '<b>'.$display.'</b>';;
2809: }
2810: return $currentstring;
2811: }
2812:
2813: sub end_externallink {
2814: my ($target,$token) = @_;
2815: my $currentstring = '';
2816: if ($target eq 'web') {
2817: $currentstring .= '';
2818: }
2819: return $currentstring;
2820: }
2821:
2822: #-- <blankspace heigth="">
2823: sub start_blankspace {
2824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2825: my $currentstring = '';
2826: if ($target eq 'tex') {
2827: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2828: $currentstring .= '\vskip '.$howmuch.' ';
2829: }
2830: return $currentstring;
2831: }
2832:
2833: sub end_blankspace {
2834: my ($target,$token) = @_;
2835: my $currentstring = '';
2836: if ($target eq 'tex') {
2837: $currentstring .= '';
2838: }
2839: return $currentstring;
2840: }
2841:
2842: #-- <abbr> tag (end tag required)
2843: sub start_abbr {
2844: my ($target,$token) = @_;
2845: my $currentstring = '';
2846: if ($target eq 'web') {
2847: $currentstring = $token->[4];
2848: }
2849: return $currentstring;
2850: }
2851:
2852: sub end_abbr {
2853: my ($target,$token) = @_;
2854: my $currentstring = '';
2855: if ($target eq 'web') {
2856: $currentstring = $token->[2];
2857: }
2858: return $currentstring;
2859: }
2860:
2861: #-- <acronym> tag (end tag required)
2862: sub start_acronym {
2863: my ($target,$token) = @_;
2864: my $currentstring = '';
2865: if ($target eq 'web') {
2866: $currentstring = $token->[4];
2867: }
2868: return $currentstring;
2869: }
2870:
2871: sub end_acronym {
2872: my ($target,$token) = @_;
2873: my $currentstring = '';
2874: if ($target eq 'web') {
2875: $currentstring = $token->[2];
2876: }
2877: return $currentstring;
2878: }
2879:
2880: #-- <area> tag (end tag forbidden)
2881: sub start_area {
2882: my ($target,$token) = @_;
2883: my $currentstring = '';
2884: if ($target eq 'web') {
2885: $currentstring = $token->[4];
2886: }
2887: return $currentstring;
2888: }
2889:
2890: sub end_area {
2891: my ($target,$token) = @_;
2892: my $currentstring = '';
2893: if ($target eq 'web') {
2894: $currentstring = $token->[2];
2895: }
2896: return $currentstring;
2897: }
2898:
2899: #-- <base> tag (end tag forbidden)
2900: sub start_base {
2901: my ($target,$token) = @_;
2902: my $currentstring = '';
2903: if ($target eq 'web') {
2904: $currentstring = $token->[4];
2905: }
2906: return $currentstring;
2907: }
2908:
2909: sub end_base {
2910: my ($target,$token) = @_;
2911: my $currentstring = '';
2912: if ($target eq 'web') {
2913: $currentstring = $token->[2];
2914: }
2915: return $currentstring;
2916: }
2917:
2918: #-- <bdo> tag (end tag required)
2919: sub start_bdo {
2920: my ($target,$token) = @_;
2921: my $currentstring = '';
2922: if ($target eq 'web') {
2923: $currentstring = $token->[4];
2924: }
2925: return $currentstring;
2926: }
2927:
2928: sub end_bdo {
2929: my ($target,$token) = @_;
2930: my $currentstring = '';
2931: if ($target eq 'web') {
2932: $currentstring = $token->[2];
2933: }
2934: return $currentstring;
2935: }
2936:
2937: #-- <bgsound> tag (end tag optional)
2938: sub start_bgsound {
2939: my ($target,$token) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web') {
2942: $currentstring = $token->[4];
2943: }
2944: return $currentstring;
2945: }
2946:
2947: sub end_bgsound {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'web') {
2951: $currentstring = $token->[2];
2952: }
2953: return $currentstring;
2954: }
2955:
2956: #-- <blink> tag (end tag required)
2957: sub start_blink {
2958: my ($target,$token) = @_;
2959: my $currentstring = '';
2960: if ($target eq 'web') {
2961: $currentstring = $token->[4];
2962: }
2963: return $currentstring;
2964: }
2965:
2966: sub end_blink {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[2];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: #-- <blockquote> tag (end tag required)
2976: sub start_blockquote {
2977: my ($target,$token) = @_;
2978: my $currentstring = '';
2979: if ($target eq 'web') {
2980: $currentstring = $token->[4];
2981: }
2982: return $currentstring;
2983: }
2984:
2985: sub end_blockquote {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[2];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: #-- <button> tag (end tag required)
2995: sub start_button {
2996: my ($target,$token) = @_;
2997: my $currentstring = '';
2998: if ($target eq 'web') {
2999: $currentstring = $token->[4];
3000: }
3001: return $currentstring;
3002: }
3003:
3004: sub end_button {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[2];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: #-- <caption> tag (end tag required)
3014: sub start_caption {
3015: my ($target,$token) = @_;
3016: my $currentstring = '';
3017: if ($target eq 'web') {
3018: $currentstring = $token->[4];
3019: }
3020: return $currentstring;
3021: }
3022:
3023: sub end_caption {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[2];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: #-- <col> tag (end tag forbdden)
3033: sub start_col {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[4];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_col {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[2];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: #-- <colgroup> tag (end tag optional)
3052: sub start_colgroup {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[4];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_colgroup {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <del> tag (end tag required)
3071: sub start_del {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[4];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: sub end_del {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[2];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: #-- <fieldset> tag (end tag required)
3090: sub start_fieldset {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[4];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_fieldset {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[2];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: #-- <frame> tag (end tag forbidden)
3109: sub start_frame {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[4];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: sub end_frame {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[2];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: #-- <iframe> tag (end tag required)
3128: sub start_iframe {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[4];
3133: }
3134: return $currentstring;
3135: }
3136:
3137: sub end_iframe {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[2];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: #-- <ins> tag (end tag required)
3147: sub start_ins {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web') {
3151: $currentstring = $token->[4];
3152: }
3153: return $currentstring;
3154: }
3155:
3156: sub end_ins {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[2];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: #-- <isindex> tag (end tag forbidden)
3166: sub start_isindex {
3167: my ($target,$token) = @_;
3168: my $currentstring = '';
3169: if ($target eq 'web') {
3170: $currentstring = $token->[4];
3171: }
3172: return $currentstring;
3173: }
3174:
3175: sub end_isindex {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[2];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: #-- <keygen> tag (end tag forbidden)
3185: sub start_keygen {
3186: my ($target,$token) = @_;
3187: my $currentstring = '';
3188: if ($target eq 'web') {
3189: $currentstring = $token->[4];
3190: }
3191: return $currentstring;
3192: }
3193:
3194: sub end_keygen {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[2];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: #-- <label> tag
3204: sub start_label {
3205: my ($target,$token) = @_;
3206: my $currentstring = '';
3207: if ($target eq 'web') {
3208: $currentstring = $token->[4];
3209: }
3210: return $currentstring;
3211: }
3212:
3213: sub end_label {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[2];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: #-- <layer> tag (end tag required)
3223: sub start_layer {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'web') {
3227: $currentstring = $token->[4];
3228: }
3229: return $currentstring;
3230: }
3231:
3232: sub end_layer {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[2];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: #-- <legend> tag (end tag required)
3242: sub start_legend {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web') {
3246: $currentstring = $token->[4];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: sub end_legend {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[2];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: #-- <link> tag (end tag forbidden)
3261: sub start_link {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web') {
3265: $currentstring = $token->[4];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: sub end_link {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[2];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: #-- <marquee> tag (end tag optional)
3280: sub start_marquee {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web') {
3284: $currentstring = $token->[4];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: sub end_marquee {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[2];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: #-- <multicol> tag (end tag required)
3299: sub start_multicol {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web') {
3303: $currentstring = $token->[4];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: sub end_multicol {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[2];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: #-- <nobr> tag (end tag required)
3318: sub start_nobr {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[4];
3323: } elsif ($target eq 'tex') {
3324: $currentstring='\mbox{';
3325: }
3326: return $currentstring;
3327: }
3328:
3329: sub end_nobr {
3330: my ($target,$token) = @_;
3331: my $currentstring = '';
3332: if ($target eq 'web') {
3333: $currentstring = $token->[2];
3334: } elsif ($target eq 'tex') {
3335: $currentstring='}';
3336: }
3337: return $currentstring;
3338: }
3339:
3340: #-- <noembed> tag (end tag required)
3341: sub start_noembed {
3342: my ($target,$token) = @_;
3343: my $currentstring = '';
3344: if ($target eq 'web') {
3345: $currentstring = $token->[4];
3346: }
3347: return $currentstring;
3348: }
3349:
3350: sub end_noembed {
3351: my ($target,$token) = @_;
3352: my $currentstring = '';
3353: if ($target eq 'web') {
3354: $currentstring = $token->[2];
3355: }
3356: return $currentstring;
3357: }
3358:
3359: #-- <noframes> tag (end tag required)
3360: sub start_noframes {
3361: my ($target,$token) = @_;
3362: my $currentstring = '';
3363: if ($target eq 'web') {
3364: $currentstring = $token->[4];
3365: }
3366: return $currentstring;
3367: }
3368:
3369: sub end_noframes {
3370: my ($target,$token) = @_;
3371: my $currentstring = '';
3372: if ($target eq 'web') {
3373: $currentstring = $token->[2];
3374: }
3375: return $currentstring;
3376: }
3377:
3378: #-- <nolayer> tag (end tag required)
3379: sub start_nolayer {
3380: my ($target,$token) = @_;
3381: my $currentstring = '';
3382: if ($target eq 'web') {
3383: $currentstring = $token->[4];
3384: }
3385: return $currentstring;
3386: }
3387:
3388: sub end_nolayer {
3389: my ($target,$token) = @_;
3390: my $currentstring = '';
3391: if ($target eq 'web') {
3392: $currentstring = $token->[2];
3393: }
3394: return $currentstring;
3395: }
3396:
3397: #-- <noscript> tag (end tag required)
3398: sub start_noscript {
3399: my ($target,$token) = @_;
3400: my $currentstring = '';
3401: if ($target eq 'web') {
3402: $currentstring = $token->[4];
3403: }
3404: return $currentstring;
3405: }
3406:
3407: sub end_noscript {
3408: my ($target,$token) = @_;
3409: my $currentstring = '';
3410: if ($target eq 'web') {
3411: $currentstring = $token->[2];
3412: }
3413: return $currentstring;
3414: }
3415:
3416: #-- <object> tag (end tag required)
3417: sub start_object {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web') {
3421: $currentstring = $token->[4];
3422: }
3423: return $currentstring;
3424: }
3425:
3426: sub end_object {
3427: my ($target,$token) = @_;
3428: my $currentstring = '';
3429: if ($target eq 'web') {
3430: $currentstring = $token->[2];
3431: }
3432: return $currentstring;
3433: }
3434:
3435: #-- <optgroup> tag (end tag required)
3436: sub start_optgroup {
3437: my ($target,$token) = @_;
3438: my $currentstring = '';
3439: if ($target eq 'web') {
3440: $currentstring = $token->[4];
3441: }
3442: return $currentstring;
3443: }
3444:
3445: sub end_optgroup {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web') {
3449: $currentstring = $token->[2];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <samp> tag (end tag required)
3455: sub start_samp {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web') {
3459: $currentstring = $token->[4];
3460: } elsif ($target eq 'tex') {
3461: $currentstring='\texttt{';
3462: }
3463: return $currentstring;
3464: }
3465:
3466: sub end_samp {
3467: my ($target,$token) = @_;
3468: my $currentstring = '';
3469: if ($target eq 'web') {
3470: $currentstring = $token->[2];
3471: } elsif ($target eq 'tex') {
3472: $currentstring='}';
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <server> tag
3478: sub start_server {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_server {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <spacer> tag (end tag forbidden)
3497: sub start_spacer {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_spacer {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <span> tag (end tag required)
3516: sub start_span {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_span {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <tbody> tag (end tag optional)
3535: sub start_tbody {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_tbody {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <tfoot> tag (end tag optional)
3554: sub start_tfoot {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web') {
3558: $currentstring = $token->[4];
3559: }
3560: return $currentstring;
3561: }
3562:
3563: sub end_tfoot {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web') {
3567: $currentstring = $token->[2];
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <thead> tag (end tag optional)
3573: sub start_thead {
3574: my ($target,$token) = @_;
3575: my $currentstring = '';
3576: if ($target eq 'web') {
3577: $currentstring = $token->[4];
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_thead {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web') {
3586: $currentstring = $token->[2];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <var> tag
3592: sub start_var {
3593: my ($target,$token) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web') {
3596: $currentstring = $token->[4];
3597: } elsif ($target eq 'tex') {
3598: $currentstring = '\textit{';
3599: }
3600: return $currentstring;
3601: }
3602:
3603: sub end_var {
3604: my ($target,$token) = @_;
3605: my $currentstring = '';
3606: if ($target eq 'web') {
3607: $currentstring = $token->[2];
3608: } elsif ($target eq 'tex') {
3609: $currentstring = '}';
3610: }
3611: return $currentstring;
3612: }
3613:
3614: #-- <wbr> tag (end tag forbidden)
3615: sub start_wbr {
3616: my ($target,$token) = @_;
3617: my $currentstring = '';
3618: if ($target eq 'web') {
3619: $currentstring = $token->[4];
3620: }
3621: return $currentstring;
3622: }
3623:
3624: sub end_wbr {
3625: my ($target,$token) = @_;
3626: my $currentstring = '';
3627: if ($target eq 'web') {
3628: $currentstring = $token->[2];
3629: }
3630: return $currentstring;
3631: }
3632:
3633: #-- <hideweboutput> tag
3634: sub start_hideweboutput {
3635: my ($target,$token) = @_;
3636: if ($target eq 'web') {
3637: &Apache::lonxml::startredirection();
3638: }
3639: return '';
3640: }
3641:
3642: sub end_hideweboutput {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web') {
3646: $currentstring = &Apache::lonxml::endredirection();
3647: }
3648: return '';
3649: }
3650:
3651:
3652: sub image_replication {
3653: my $src = shift;
3654: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3655: #replicates eps or ps
3656: my $epssrc = my $pssrc = $src;
3657: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3658: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3659: if (not -e $epssrc && not -e $pssrc) {
3660: my $result=&Apache::lonnet::repcopy($epssrc);
3661: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3662: }
3663: return '';
3664: }
3665:
3666: sub image_size {
3667: my ($src,$scaling,$parstack,$safeeval)=@_;
3668: #size of image from gif/jpg/jpeg/png
3669: my $image = Image::Magick->new;
3670: my $current_figure = $image->Read($src);
3671: my $width_param = $image->Get('width') * $scaling;;
3672: my $height_param = $image->Get('height') * $scaling;;
3673: undef $image;
3674: #do we have any specified LaTeX size of the picture?
3675: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3676: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3677: #do we have any specified web size of the picture?
3678: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3679: undef,1);
3680: if ($TeXwidth ne '') {
3681: if ($TeXwidth=~/(\d+)\s*\%/) {
3682: $width_param = $1*$ENV{'form.textwidth'}/100;
3683: } else {
3684: $width_param = $TeXwidth;
3685: }
3686: } elsif ($TeXheight ne '') {
3687: $width_param = $TeXheight/$height_param*$width_param;
3688: } elsif ($width ne '') {
3689: $width_param = $width*$scaling;
3690: }
3691: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3692: return $width_param;
3693: }
3694:
3695: sub eps_generation {
3696: my ($src,$file,$width_param) = @_;
3697: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3698: my $temp_file = Apache::File->new('>>'.$filename);
3699: print $temp_file "$src\n";
3700: my $newsrc = $src;
3701: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3702: $newsrc=~s/\/home\/httpd\/html\/res//;
3703: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3704: $newsrc=~s/\/\.\//\//;
3705: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3706: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3707: $newsrc=~s/\/home\/httpd\/lonUsers//;
3708: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3709: }
3710: if ($newsrc=~/\/userfiles\//) {
3711: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3712: } else {
3713: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3714: }
3715: }
3716:
3717: sub file_path {
3718: my $src=shift;
3719: my ($file,$path);
3720: if ($src =~ m!(.*)/([^/]*)$!) {
3721: $file = $2;
3722: $path = $1.'/';
3723: }
3724: return $file,$path;
3725: }
3726:
3727: sub recalc {
3728: my $argument = shift;
3729: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3730: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3731: my $value=$1;
3732: my $units=$2;
3733: if ($units eq 'cm') {
3734: $value*=10;
3735: } elsif ($units eq 'in') {
3736: $value*=25.4;
3737: } elsif ($units eq 'pc') {
3738: $value*=(25.4*12/72.27);
3739: } elsif ($units eq 'pt') {
3740: $value*=(25.4/72.27);
3741: }
3742: return $value.' mm';
3743: }
3744:
3745: sub LATEX_length {
3746: my $garbage=shift;
3747: $garbage=~s/^\s+$//;
3748: $garbage=~s/^\s+(\S.*)/$1/;#space before
3749: $garbage=~s/(.*\S)\s+$/$1/;#space after
3750: $garbage=~s/(\s)+/$1/;#only one space
3751: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3752: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3753: $garbage=~s/([^\\])\$/$1/g;#$
3754: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3755: $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;
3756: $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;
3757: $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;
3758: $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;
3759: $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;
3760: $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;
3761: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3762: #remove some other LaTeX command
3763: $garbage=~s|\\(\w+)\\|\\|g;
3764: $garbage=~s|\\(\w+)(\s*)|$2|g;
3765: $garbage=~s|\+|11|g;
3766: my $value=length($garbage);
3767: return $value;
3768: }
3769:
3770:
3771:
3772:
3773: 1;
3774: __END__
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