1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.194 2004/01/28 17:16:27 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $Apache::lonxml::prevent_entity_encode++;
90: $inside ='\\documentstyle{article}'.$inside;
91: &Apache::lonxml::debug("M is starting with:$inside:");
92: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
93: if ($eval eq 'on') {
94: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
95: #&Apache::lonxml::debug("M is evaulated to:$inside:");
96: }
97: $currentstring = &Apache::lontexconvert::converted(\$inside);
98: if ($Apache::lontexconvert::errorstring) {
99: &Apache::lonxml::warning("tth error: ".
100: $Apache::lontexconvert::errorstring);
101: $Apache::lontexconvert::errorstring='';
102: }
103: #&Apache::lonxml::debug("M is ends with:$currentstring:");
104: $Apache::lonxml::post_evaluate=0;
105: } elsif ($target eq 'tex') {
106: $currentstring = $inside;
107: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
108: if ($eval eq 'on') {
109: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
110: }
111: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
112: $Apache::lonxml::post_evaluate=0;
113: }
114: return $currentstring;
115: }
116:
117: sub end_m {
118: my ($target,$token) = @_;
119: my $currentstring = '';
120: if ($target eq 'web') {
121: $Apache::lonxml::prevent_entity_encode--;
122: } elsif ($target eq 'tex') {
123: $currentstring = "";
124: } elsif ($target eq 'meta') {
125: }
126: return $currentstring;
127: }
128:
129: sub start_tthoption {
130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
131: my $result;
132: if ($target eq 'web') {
133: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
134: $inside=~s/^\s*//;
135: if ($ENV{'browser.mathml'}) {
136: &tth::ttmoptions($inside);
137: } else {
138: &tth::tthoptions($inside);
139: }
140: }
141: return $result;
142: }
143:
144: sub end_tthoption {
145: my ($target,$token) = @_;
146: my $result;
147: return $result;
148: }
149:
150: #-- <html> tag (end tag optional)
151: sub start_html {
152: my ($target,$token) = @_;
153: my $currentstring = '';
154: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
155: &init_tth();
156: if ($target eq 'web' || $target eq 'edit') {
157: $currentstring = &Apache::lonxml::xmlbegin().
158: &Apache::lonxml::fontsettings();
159: } elsif ($target eq 'tex') {
160: @Apache::londefdef::table = ();
161: $currentstring .= '\documentclass[letterpaper]{article}';
162: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
163: $currentstring .= '\newcommand{\keephidden}[1]{}
164: \renewcommand{\deg}{$^{\circ}$}
165: \usepackage{longtable}
166: \usepackage{textcomp}
167: \usepackage{makeidx}
168: \usepackage[dvips]{graphicx}
169: \usepackage{epsfig}\usepackage{calc}
170: \newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}
171: \renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
172: }
173: return $currentstring;
174: }
175:
176: sub end_html {
177: my ($target,$token) = @_;
178: my $currentstring = '';
179: if ($target eq 'web') {
180: $currentstring = &Apache::lonxml::xmlend();
181: }
182: return $currentstring;
183: }
184:
185: #-- <head> tag (end tag optional)
186: sub start_head {
187: my ($target,$token) = @_;
188: my $currentstring = '';
189: if ($target eq 'web') {
190: $currentstring = $token->[4];
191: }
192: return $currentstring;
193: }
194:
195: sub end_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
199: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
200: $token->[2];
201: }
202: return $currentstring;
203: }
204:
205: #-- <map> tag (end tag required)
206: sub start_map {
207: my ($target,$token) = @_;
208: my $currentstring = '';
209: if ($target eq 'web') {
210: $currentstring = $token->[4];
211: }
212: return $currentstring;
213: }
214:
215: sub end_map {
216: my ($target,$token) = @_;
217: my $currentstring = '';
218: if ($target eq 'web') {
219: $currentstring = $token->[2];
220: }
221: return $currentstring;
222: }
223:
224: #-- <select> tag (end tag required)
225: sub start_select {
226: my ($target,$token) = @_;
227: my $currentstring = '';
228: if ($target eq 'web') {
229: $currentstring = $token->[4];
230: } elsif ($target eq 'tex') {
231: $Apache::londefdef::select=0;
232: }
233: return $currentstring;
234: }
235:
236: sub end_select {
237: my ($target,$token) = @_;
238: my $currentstring = '';
239: if ($target eq 'web') {
240: $currentstring = $token->[2];
241: }
242: return $currentstring;
243: }
244:
245: #-- <option> tag (end tag optional)
246: sub start_option {
247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
248: my $currentstring = '';
249: if ($target eq 'web') {
250: $currentstring = $token->[4];
251: } elsif ($target eq 'tex') {
252: $Apache::londefdef::select++;
253: if ($Apache::londefdef::select == 1) {
254: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
255: } else {
256: $currentstring='\keephidden{';
257: }
258: }
259: return $currentstring;
260: }
261:
262: sub end_option {
263: my ($target,$token) = @_;
264: my $currentstring = '';
265: if ($target eq 'web') {
266: $currentstring = $token->[2];
267: } elsif ($target eq 'tex') {
268: $currentstring='}';
269: }
270: return $currentstring;
271: }
272:
273: #-- <input> tag (end tag forbidden)
274: sub start_input {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web') {
278: $currentstring = $token->[4];
279: }
280: return $currentstring;
281: }
282:
283: sub end_input {
284: my ($target,$token) = @_;
285: my $currentstring = '';
286: if ($target eq 'web') {
287: $currentstring = $token->[2];
288: }
289: return $currentstring;
290: }
291:
292: #-- <textarea> tag (end tag required)
293: sub start_textarea {
294: my ($target,$token) = @_;
295: my $currentstring = '';
296: if ($target eq 'web') {
297: $currentstring = $token->[4];
298: }
299: return $currentstring;
300: }
301:
302: sub end_textarea {
303: my ($target,$token) = @_;
304: my $currentstring = '';
305: if ($target eq 'web') {
306: $currentstring = $token->[2];
307: }
308: return $currentstring;
309: }
310:
311: #-- <form> tag (end tag required)
312: sub start_form {
313: my ($target,$token) = @_;
314: my $currentstring = '';
315: if ($target eq 'web') {
316: $currentstring = $token->[4];
317: }
318: return $currentstring;
319: }
320:
321: sub end_form {
322: my ($target,$token) = @_;
323: my $currentstring = '';
324: if ($target eq 'web') {
325: $currentstring = $token->[2];
326: }
327: return $currentstring;
328: }
329:
330: #-- <title> tag (end tag required)
331: sub start_title {
332: my ($target,$token) = @_;
333: my $currentstring = '';
334: if ($target eq 'web') {
335: $currentstring = $token->[4];
336: } elsif ($target eq 'tex') {
337: $currentstring .= '\keephidden{Title of the document: '
338: }
339: if ($target eq 'meta') {
340: $currentstring='<title>';
341: &start_output($target);
342: }
343: return $currentstring;
344: }
345:
346: sub end_title {
347: my ($target,$token) = @_;
348: my $currentstring = '';
349: if ($target eq 'web') {
350: $currentstring = $token->[2];
351: } elsif ($target eq 'tex') {
352: $currentstring .= '}';
353: }
354: if ($target eq 'meta') {
355: &end_output($target);
356: $currentstring='</title>';
357: }
358: return $currentstring;
359: }
360:
361: #-- <meta> tag (end tag forbidden)
362: sub start_meta {
363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
364: my $currentstring = '';
365: if ($target eq 'web') {
366: my $args='';
367: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
368: if ($args eq '') {
369: &Apache::lonxml::get_all_text("/meta",$parser);
370: } else {
371: $currentstring = $token->[4];
372: }
373: } elsif ($target eq 'meta') {
374: unless (&Apache::lonxml::get_param
375: ('http-equiv',$parstack,$safeeval,undef,1)) {
376: my $name=$token->[2]->{'name'};
377: $name=~tr/A-Z/a-z/;
378: $name=~s/\s/\_/gs;
379: $name=~s/\W//gs;
380: if ($name) {
381: $currentstring='<'.$name;
382: my $display=&Apache::lonxml::get_param
383: ('display',$parstack,$safeeval,undef,1);
384: if ($display) {
385: $display=~s/\"/\'/g;
386: $currentstring.=' display="'.$display.'"';
387: }
388: $currentstring.='>'.
389: &Apache::lonxml::get_param
390: ('content',$parstack,$safeeval,undef,1).
391: '</'.$name.'>';
392: }
393: my $display=&Apache::lonxml::get_param
394: ('display',$parstack,$safeeval,undef,1);
395: if ($display) {
396: $display=&HTML::Entities::encode($display);
397: $currentstring.='<'.$name.'.display>'.$display.
398: '</'.$name.'.display>';
399: }
400: }
401: } elsif ($target eq 'tex') {
402: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
403: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
404: if ((not defined $content) && (not defined $name)) {
405: &Apache::lonxml::startredirection();
406: }
407: }
408: return $currentstring;
409: }
410:
411: sub end_meta {
412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
413: my $currentstring = '';
414: if ($target eq 'web') {
415: my $args='';
416: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
417: if ($args ne '') {
418: $currentstring = $token->[4];
419: }
420: } elsif ($target eq 'tex') {
421: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
422: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
423: if ((not defined $content) && (not defined $name)) {
424: &Apache::lonxml::endredirection();
425: }
426: }
427: return $currentstring;
428: }
429:
430: # accessrule
431: sub start_accessrule {
432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
433: my $currentstring = '';
434: my $eff=&Apache::lonxml::get_param
435: ('effect',$parstack,$safeeval,undef,1);
436: my $realm=&Apache::lonxml::get_param
437: ('realm',$parstack,$safeeval,undef,1);
438: my $role=&Apache::lonxml::get_param
439: ('role',$parstack,$safeeval,undef,1);
440: $realm=~s/\s+//g;
441: $realm=~s/\//\_/g;
442: $realm=~s/^\_//;
443: $realm=~s/\W/\;/g;
444: $role=~s/\s+//g;
445: $role=~s/\//\_/g;
446: $role=~s/\W/\;/g;
447: if ($target eq 'web') {
448: my $args='';
449: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
450: if ($args eq '') {
451: &Apache::lonxml::get_all_text("/accessrule",$parser);
452: } else {
453: $currentstring = $token->[4];
454: }
455: }
456: if ($target eq 'meta') {
457: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
458: }
459: return $currentstring;
460: }
461:
462: sub end_accessrule {
463: my ($target,$token,$tagstack,$parstack,$parser) = @_;
464: my $currentstring = '';
465: if ($target eq 'web') {
466: my $args='';
467: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
468: if ($args ne '') {
469: $currentstring = $token->[4];
470: }
471: }
472: return $currentstring;
473: }
474:
475: #-- <body> tag (end tag required)
476: sub start_body {
477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
478: my $currentstring = '';
479: if ($target eq 'web') {
480: if ($Apache::lonhomework::parsing_a_problem) {
481: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
482: return '';
483: }
484: if (!$Apache::lonxml::registered &&
485: $ENV{'request.state'} eq 'published') {
486: $currentstring.='<head>'.
487: &Apache::lonmenu::registerurl(undef,$target).'</head>';
488: }
489: # Accessibility
490: if ($ENV{'browser.imagesuppress'} eq 'on') {
491: delete($token->[2]->{'background'});
492: }
493: if ($ENV{'browser.fontenhance'} eq 'on') {
494: my $style='';
495: foreach my $key (keys(%{$token->[2]})) {
496: if ($key =~ /^style$/i) {
497: $style.=$token->[2]->{$key}.';';
498: delete($token->[2]->{$key});
499: }
500: }
501: $token->[2]->{'style'}=$style.'; font-size: x-large;';
502: }
503: if ($ENV{'browser.blackwhite'} eq 'on') {
504: delete($token->[2]->{'font'});
505: delete($token->[2]->{'link'});
506: delete($token->[2]->{'alink'});
507: delete($token->[2]->{'vlink'});
508: delete($token->[2]->{'bgcolor'});
509: delete($token->[2]->{'background'});
510: }
511: # Overload loads
512: my $onLoad='';
513: foreach my $key (keys(%{$token->[2]})) {
514: if ($key =~ /^onload$/i) {
515: $onLoad.=$token->[2]->{$key}.';';
516: delete($token->[2]->{$key});
517: }
518: }
519: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
520: my $onUnload='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^onunload$/i) {
523: $onUnload.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
528: ';'.$onUnload;
529:
530: $currentstring .= '<'.$token->[1];
531: foreach (keys %{$token->[2]}) {
532: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
533: }
534: $currentstring.='>';
535: if ($ENV{'request.state'} ne 'published') {
536: $currentstring.=(<<EDITBUTTON);
537: <form method="post">
538: <input type="submit" name="editmode" value="Edit" />
539: </form>
540: EDITBUTTON
541: } else {
542: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
543: }
544: } elsif ($target eq 'tex') {
545: $currentstring = '\begin{document}';
546: }
547: return $currentstring;
548: }
549:
550: sub end_body {
551: my ($target,$token) = @_;
552: my $currentstring = '';
553: if ($target eq 'web') {
554: $currentstring = $token->[2];
555: } elsif ($target eq 'tex') {
556: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
557: }
558: return $currentstring;
559: }
560:
561: #-- <center> tag (end tag required)
562: sub start_center {
563: my ($target,$token) = @_;
564: my $currentstring = '';
565: if ($target eq 'web') {
566: $currentstring = $token->[4];
567: } elsif ($target eq 'tex') {
568: $currentstring = '\begin{center}';
569: }
570: return $currentstring;
571: }
572:
573: sub end_center {
574: my ($target,$token) = @_;
575: my $currentstring = '';
576: if ($target eq 'web') {
577: $currentstring = $token->[2];
578: } elsif ($target eq 'tex') {
579: $currentstring = '\end{center}';
580: }
581: return $currentstring;
582: }
583:
584: #-- <b> tag (end tag required)
585: sub start_b {
586: my ($target,$token) = @_;
587: my $currentstring = '';
588: if ($target eq 'web') {
589: $currentstring = $token->[4];
590: } elsif ($target eq 'tex') {
591: $currentstring = '\textbf{';
592: }
593: return $currentstring;
594: }
595:
596: sub end_b {
597: my ($target,$token) = @_;
598: my $currentstring = '';
599: if ($target eq 'web') {
600: $currentstring = $token->[2];
601: } elsif ($target eq 'tex') {
602: $currentstring = '}';
603: }
604: return $currentstring;
605: }
606:
607: #-- <strong> tag (end tag required)
608: sub start_strong {
609: my ($target,$token) = @_;
610: my $currentstring = '';
611: if ($target eq 'web') {
612: $currentstring = $token->[4];
613: } elsif ($target eq 'tex') {
614: $currentstring = '\textbf{';
615: }
616: return $currentstring;
617: }
618:
619: sub end_strong {
620: my ($target,$token) = @_;
621: my $currentstring = '';
622: if ($target eq 'web') {
623: $currentstring = $token->[2];
624: } elsif ($target eq 'tex') {
625: $currentstring = '}';
626: }
627: return $currentstring;
628: }
629:
630: #-- <h1> tag (end tag required)
631: sub start_h1 {
632: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
633: my $currentstring = '';
634: if ($target eq 'web') {
635: $currentstring .= $token->[4];
636: } elsif ($target eq 'tex') {
637: my $pre;
638: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
639: if (($align eq 'center') || (not defined $align)) {
640: $pre='\begin{center}';
641: } elsif ($align eq 'left') {
642: $pre='\rlap{';
643: } elsif ($align eq 'right') {
644: $pre=' \hfill \llap{';
645: }
646: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
647: if (not defined $TeXsize) {$TeXsize="large";}
648: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
649: } elsif ($target eq 'meta') {
650: $currentstring='<subject>';
651: &start_output($target);
652: }
653: return $currentstring;
654: }
655:
656: sub end_h1 {
657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
658: my $currentstring = '';
659: if ($target eq 'web') {
660: $currentstring .= $token->[2];
661: } elsif ($target eq 'tex') {
662: my $post;
663: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
664: if (($align eq 'center') || (not defined $align)) {
665: $post='\end{center}';
666: } elsif ($align eq 'left') {
667: $post='} \hfill'.'\vskip 0 mm ';
668: } elsif ($align eq 'right') {
669: $post='}'.'\vskip 0 mm ';
670: }
671: $currentstring .= '}}'.$post;
672: } elsif ($target eq 'meta') {
673: &end_output($target);
674: $currentstring='</subject>';
675: }
676: return $currentstring;
677: }
678:
679: #-- <h2> tag
680: sub start_h2 {
681: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
682: my $currentstring = '';
683: if ($target eq 'web') {
684: $currentstring .= $token->[4];
685: } elsif ($target eq 'tex') {
686: my $pre;
687: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
688: if (($align eq 'center') || (not defined $align)) {
689: $pre='\begin{center}';
690: } elsif ($align eq 'left') {
691: $pre='\rlap{';
692: } elsif ($align eq 'right') {
693: $pre=' \hfill \llap{';
694: }
695: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
696: if (not defined $TeXsize) {$TeXsize="large";}
697: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
698: }
699: return $currentstring;
700: }
701:
702: sub end_h2 {
703: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
704: my $currentstring = '';
705: if ($target eq 'web') {
706: $currentstring .= $token->[2];
707: } elsif ($target eq 'tex') {
708: my $post;
709: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
710: if (($align eq 'center') || (not defined $align)) {
711: $post='\end{center}';
712: } elsif ($align eq 'left') {
713: $post='} \hfill'.'\vskip 0 mm ';
714: } elsif ($align eq 'right') {
715: $post='}'.'\vskip 0 mm ';
716: }
717: $currentstring .= '}}'.$post;
718: }
719: return $currentstring;
720: }
721:
722: #-- <h3> tag
723: sub start_h3 {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
725: my $currentstring = '';
726: if ($target eq 'web') {
727: $currentstring .= $token->[4];
728: } elsif ($target eq 'tex') {
729: my $pre;
730: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
731: if (($align eq 'center') || (not defined $align)) {
732: $pre='\begin{center}';
733: } elsif ($align eq 'left') {
734: $pre='\rlap{';
735: } elsif ($align eq 'right') {
736: $pre=' \hfill \llap{';
737: }
738: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
739: if (not defined $TeXsize) {$TeXsize="large";}
740: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
741: }
742: return $currentstring;
743: }
744:
745: sub end_h3 {
746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
747: my $currentstring = '';
748: if ($target eq 'web') {
749: $currentstring .= $token->[2];
750: } elsif ($target eq 'tex') {
751: my $post;
752: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
753: if (($align eq 'center') || (not defined $align)) {
754: $post='\end{center}';
755: } elsif ($align eq 'left') {
756: $post='} \hfill'.'\vskip 0 mm ';
757: } elsif ($align eq 'right') {
758: $post='}'.'\vskip 0 mm ';
759: }
760: $currentstring .= '}}'.$post;
761: }
762: return $currentstring;
763: }
764:
765: #-- <h4> tag
766: sub start_h4 {
767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
768: my $currentstring = '';
769: if ($target eq 'web') {
770: $currentstring .= $token->[4];
771: } elsif ($target eq 'tex') {
772: my $pre;
773: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
774: if (($align eq 'center') || (not defined $align)) {
775: $pre='\begin{center}';
776: } elsif ($align eq 'left') {
777: $pre='\rlap{';
778: } elsif ($align eq 'right') {
779: $pre=' \hfill \llap{';
780: }
781: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
782: if (not defined $TeXsize) {$TeXsize="large";}
783: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
784: }
785: return $currentstring;
786: }
787:
788: sub end_h4 {
789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
790: my $currentstring = '';
791: if ($target eq 'web') {
792: $currentstring .= $token->[2];
793: } elsif ($target eq 'tex') {
794: my $post;
795: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
796: if (($align eq 'center') || (not defined $align)) {
797: $post='\end{center}';
798: } elsif ($align eq 'left') {
799: $post='} \hfill'.'\vskip 0 mm ';
800: } elsif ($align eq 'right') {
801: $post='}'.'\vskip 0 mm ';
802: }
803: $currentstring .= '}}'.$post;
804: }
805: return $currentstring;
806: }
807:
808: #-- <h5> tag
809: sub start_h5 {
810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
811: my $currentstring = '';
812: if ($target eq 'web') {
813: $currentstring .= $token->[4];
814: } elsif ($target eq 'tex') {
815: my $pre;
816: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
817: if (($align eq 'center') || (not defined $align)) {
818: $pre='\begin{center}';
819: } elsif ($align eq 'left') {
820: $pre='\rlap{';
821: } elsif ($align eq 'right') {
822: $pre=' \hfill \llap{';
823: }
824: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
825: if (not defined $TeXsize) {$TeXsize="large";}
826: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
827: }
828: return $currentstring;
829: }
830:
831: sub end_h5 {
832: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
833: my $currentstring = '';
834: if ($target eq 'web') {
835: $currentstring .= $token->[2];
836: } elsif ($target eq 'tex') {
837: my $post;
838: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
839: if (($align eq 'center') || (not defined $align)) {
840: $post='\end{center}';
841: } elsif ($align eq 'left') {
842: $post='} \hfill'.'\vskip 0 mm ';
843: } elsif ($align eq 'right') {
844: $post='}'.'\vskip 0 mm ';
845: }
846: $currentstring .= '}}'.$post;
847: }
848: return $currentstring;
849: }
850:
851: #-- <h6> tag
852: sub start_h6 {
853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
854: my $currentstring = '';
855: if ($target eq 'web') {
856: $currentstring .= $token->[4];
857: } elsif ($target eq 'tex') {
858: my $pre;
859: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
860: if (($align eq 'center') || (not defined $align)) {
861: $pre='\begin{center}';
862: } elsif ($align eq 'left') {
863: $pre='\rlap{';
864: } elsif ($align eq 'right') {
865: $pre=' \hfill \llap{';
866: }
867: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
868: if (not defined $TeXsize) {$TeXsize="large";}
869: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
870: }
871: return $currentstring;
872: }
873:
874: sub end_h6 {
875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
876: my $currentstring = '';
877: if ($target eq 'web') {
878: $currentstring .= $token->[2];
879: } elsif ($target eq 'tex') {
880: my $post;
881: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
882: if (($align eq 'center') || (not defined $align)) {
883: $post='\end{center}';
884: } elsif ($align eq 'left') {
885: $post='} \hfill'.'\vskip 0 mm ';
886: } elsif ($align eq 'right') {
887: $post='}'.'\vskip 0 mm ';
888: }
889: $currentstring .= '}}'.$post;
890: }
891: return $currentstring;
892: }
893:
894: #--- <cite> tag (end tag required)
895: sub start_cite {
896: my ($target,$token) = @_;
897: my $currentstring = '';
898: if ($target eq 'web') {
899: $currentstring .= $token->[4];
900: } elsif ($target eq 'tex') {
901: $currentstring .= '\textit{';
902: }
903: return $currentstring;
904: }
905:
906: sub end_cite {
907: my ($target,$token) = @_;
908: my $currentstring = '';
909: if ($target eq 'web') {
910: $currentstring .= $token->[2];
911: } elsif ($target eq 'tex') {
912: $currentstring .= '}';
913: }
914: return $currentstring;
915: }
916:
917: #-- <i> tag (end tag required)
918: sub start_i {
919: my ($target,$token) = @_;
920: my $currentstring = '';
921: if ($target eq 'web') {
922: $currentstring .= $token->[4];
923: } elsif ($target eq 'tex') {
924: $currentstring .= '\textit{';
925: }
926: return $currentstring;
927: }
928:
929: sub end_i {
930: my ($target,$token) = @_;
931: my $currentstring = '';
932: if ($target eq 'web') {
933: $currentstring .= $token->[2];
934: } elsif ($target eq 'tex') {
935: $currentstring .= '}';
936: }
937: return $currentstring;
938: }
939:
940: #-- <address> tag (end tag required)
941: sub start_address {
942: my ($target,$token) = @_;
943: my $currentstring = '';
944: if ($target eq 'web') {
945: $currentstring .= $token->[4];
946: } elsif ($target eq 'tex') {
947: $currentstring .= '\textit{';
948: }
949: return $currentstring;
950: }
951:
952: sub end_address {
953: my ($target,$token) = @_;
954: my $currentstring = '';
955: if ($target eq 'web') {
956: $currentstring .= $token->[2];
957: } elsif ($target eq 'tex') {
958: $currentstring .= '}';
959: }
960: return $currentstring;
961: }
962:
963: #-- <dfn> tag (end tag required)
964: sub start_dfn {
965: my ($target,$token) = @_;
966: my $currentstring = '';
967: if ($target eq 'web') {
968: $currentstring .= $token->[4];
969: } elsif ($target eq 'tex') {
970: $currentstring .= '\textit{';
971: }
972: return $currentstring;
973: }
974:
975: sub end_dfn {
976: my ($target,$token) = @_;
977: my $currentstring = '';
978: if ($target eq 'web') {
979: $currentstring .= $token->[2];
980: } elsif ($target eq 'tex') {
981: $currentstring .= '}';
982: }
983: return $currentstring;
984: }
985:
986: #-- <tt> tag (end tag required)
987: sub start_tt {
988: my ($target,$token) = @_;
989: my $currentstring = '';
990: if ($target eq 'web') {
991: $currentstring .= $token->[4];
992: } elsif ($target eq 'tex') {
993: $currentstring .= '\texttt{';
994: }
995: return $currentstring;
996: }
997:
998: sub end_tt {
999: my ($target,$token) = @_;
1000: my $currentstring = '';
1001: if ($target eq 'web') {
1002: $currentstring .= $token->[2];
1003: } elsif ($target eq 'tex') {
1004: $currentstring .= '}';
1005: }
1006: return $currentstring;
1007: }
1008:
1009: #-- <kbd> tag (end tag required)
1010: sub start_kbd {
1011: my ($target,$token) = @_;
1012: my $currentstring = '';
1013: if ($target eq 'web') {
1014: $currentstring .= $token->[4];
1015: } elsif ($target eq 'tex') {
1016: $currentstring .= '\texttt{';
1017: }
1018: return $currentstring;
1019: }
1020:
1021: sub end_kbd {
1022: my ($target,$token) = @_;
1023: my $currentstring = '';
1024: if ($target eq 'web') {
1025: $currentstring .= $token->[2];
1026: } elsif ($target eq 'tex') {
1027: $currentstring .= '}';
1028: }
1029: return $currentstring;
1030: }
1031:
1032: #-- <code> tag (end tag required)
1033: sub start_code {
1034: my ($target,$token) = @_;
1035: my $currentstring = '';
1036: if ($target eq 'web') {
1037: $currentstring .= $token->[4];
1038: } elsif ($target eq 'tex') {
1039: $currentstring .= '\texttt{';
1040: }
1041: return $currentstring;
1042: }
1043:
1044: sub end_code {
1045: my ($target,$token) = @_;
1046: my $currentstring = '';
1047: if ($target eq 'web') {
1048: $currentstring .= $token->[2];
1049: } elsif ($target eq 'tex') {
1050: $currentstring .= '}';
1051: }
1052: return $currentstring;
1053: }
1054:
1055: #-- <em> tag (end tag required)
1056: sub start_em {
1057: my ($target,$token) = @_;
1058: my $currentstring = '';
1059: if ($target eq 'web') {
1060: $currentstring .= $token->[4];
1061: } elsif ($target eq 'tex') {
1062: $currentstring .= '\emph{';
1063: }
1064: return $currentstring;
1065: }
1066:
1067: sub end_em {
1068: my ($target,$token) = @_;
1069: my $currentstring = '';
1070: if ($target eq 'web') {
1071: $currentstring .= $token->[2];
1072: } elsif ($target eq 'tex') {
1073: $currentstring .= '}';
1074: }
1075: return $currentstring;
1076: }
1077:
1078: #-- <q> tag (end tag required)
1079: sub start_q {
1080: my ($target,$token) = @_;
1081: my $currentstring = '';
1082: if ($target eq 'web') {
1083: $currentstring .= $token->[4];
1084: } elsif ($target eq 'tex') {
1085: $currentstring .= '\emph{';
1086: }
1087: return $currentstring;
1088: }
1089:
1090: sub end_q {
1091: my ($target,$token) = @_;
1092: my $currentstring = '';
1093: if ($target eq 'web') {
1094: $currentstring .= $token->[2];
1095: } elsif ($target eq 'tex') {
1096: $currentstring .= '}';
1097: }
1098: return $currentstring;
1099: }
1100:
1101: #-- <p> tag (end tag optional)
1102: sub start_p {
1103: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1104: my $currentstring = '';
1105: if ($target eq 'web') {
1106: $currentstring .= $token->[4];
1107: } elsif ($target eq 'tex') {
1108: my $signal=1;
1109: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}
1110: if ($signal) {$currentstring .= '\par ';}
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_p {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web') {
1119: $currentstring .= $token->[2];
1120: }
1121: return $currentstring;
1122: }
1123:
1124: #-- <br> tag (end tag forbidden)
1125: sub start_br {
1126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1127: my $currentstring = '';
1128: if ($target eq 'web') {
1129: $currentstring .= $token->[4];
1130: } elsif ($target eq 'tex') {
1131: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1132: $currentstring .= '\vskip 0.2 mm ';
1133: }
1134: }
1135: return $currentstring;
1136: }
1137:
1138: sub end_br {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web') {
1142: $currentstring .= $token->[2];
1143: }
1144: return $currentstring;
1145: }
1146:
1147: #-- <big> tag (end tag required)
1148: sub start_big {
1149: my ($target,$token) = @_;
1150: my $currentstring = '';
1151: if ($target eq 'web') {
1152: $currentstring .= $token->[4];
1153: } elsif ($target eq 'tex') {
1154: $currentstring .= '{\large ';
1155: }
1156: return $currentstring;
1157: }
1158:
1159: sub end_big {
1160: my ($target,$token) = @_;
1161: my $currentstring = '';
1162: if ($target eq 'web') {
1163: $currentstring .= $token->[2];
1164: } elsif ($target eq 'tex') {
1165: $currentstring .= '}';
1166: }
1167: return $currentstring;
1168: }
1169:
1170: #-- <small> tag (end tag required)
1171: sub start_small {
1172: my ($target,$token) = @_;
1173: my $currentstring = '';
1174: if ($target eq 'web') {
1175: $currentstring .= $token->[4];
1176: } elsif ($target eq 'tex') {
1177: $currentstring .= '{\footnotesize ';
1178: }
1179: return $currentstring;
1180: }
1181:
1182: sub end_small {
1183: my ($target,$token) = @_;
1184: my $currentstring = '';
1185: if ($target eq 'web') {
1186: $currentstring .= $token->[2];
1187: } elsif ($target eq 'tex') {
1188: $currentstring .= '}';
1189: }
1190: return $currentstring;
1191: }
1192:
1193: #-- <basefont> tag (end tag forbidden)
1194: sub start_basefont {
1195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1196: my $currentstring = '';
1197: if ($target eq 'web') {
1198: $currentstring = $token->[4];
1199: } elsif ($target eq 'tex') {
1200: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1201: if (defined $basesize) {
1202: $currentstring = '{\\'.$basesize.' ';
1203: }
1204: }
1205: return $currentstring;
1206: }
1207:
1208: sub end_basefont {
1209: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1210: my $currentstring = '';
1211: if ($target eq 'web') {
1212: $currentstring = $token->[4];
1213: } elsif ($target eq 'tex') {
1214: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1215: if (defined $basesize) {
1216: $currentstring = '}';
1217: }
1218: }
1219: return $currentstring;
1220: }
1221:
1222: #-- <font> tag (end tag required)
1223: sub start_font {
1224: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1225: my $currentstring = '';
1226: if ($target eq 'web') {
1227: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1228: if ($face=~/symbol/i) {
1229: $Apache::lonxml::prevent_entity_encode++;
1230: } else {
1231: if (($ENV{'browser.fontenhance'} eq 'on') ||
1232: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1233: }
1234: $currentstring = $token->[4];
1235: } elsif ($target eq 'tex') {
1236: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1237: if (defined $fontsize) {
1238: $currentstring = '{\\'.$fontsize.' ';
1239: }
1240: }
1241: return $currentstring;
1242: }
1243:
1244: sub end_font {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1246: my $currentstring = '';
1247: if ($target eq 'web') {
1248: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1249: if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
1250: $currentstring = $token->[2];
1251: } elsif ($target eq 'tex') {
1252: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1253: if (defined $fontsize) {
1254: $currentstring = '}';
1255: }
1256: }
1257: return $currentstring;
1258: }
1259:
1260: #-- <strike> tag (end tag required)
1261: sub start_strike {
1262: my ($target,$token) = @_;
1263: my $currentstring = '';
1264: if ($target eq 'web') {
1265: $currentstring .= $token->[4];
1266: } elsif ($target eq 'tex') {
1267: &Apache::lonxml::startredirection();
1268: }
1269: return $currentstring;
1270: }
1271:
1272: sub end_strike {
1273: my ($target,$token) = @_;
1274: my $currentstring = '';
1275: if ($target eq 'web') {
1276: $currentstring .= $token->[2];
1277: } elsif ($target eq 'tex') {
1278: $currentstring=&Apache::lonxml::endredirection();
1279: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1280: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1281: $currentstring=~s/(\S)\s*$/$1\}/;
1282: }
1283: return $currentstring;
1284: }
1285:
1286: #-- <s> tag (end tag required)
1287: sub start_s {
1288: my ($target,$token) = @_;
1289: my $currentstring = '';
1290: if ($target eq 'web') {
1291: $currentstring .= $token->[4];
1292: } elsif ($target eq 'tex') {
1293: &Apache::lonxml::startredirection();
1294: }
1295: return $currentstring;
1296: }
1297:
1298: sub end_s {
1299: my ($target,$token) = @_;
1300: my $currentstring = '';
1301: if ($target eq 'web') {
1302: $currentstring .= $token->[2];
1303: } elsif ($target eq 'tex') {
1304: $currentstring=&Apache::lonxml::endredirection();
1305: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1306: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1307: $currentstring=~s/(\S)\s*$/$1\}/;
1308: }
1309: return $currentstring;
1310: }
1311:
1312: #-- <sub> tag (end tag required)
1313: sub start_sub {
1314: my ($target,$token) = @_;
1315: my $currentstring = '';
1316: if ($target eq 'web') {
1317: $currentstring .= $token->[4];
1318: } elsif ($target eq 'tex') {
1319: $currentstring .= "\$_{";
1320: }
1321: return $currentstring;
1322: }
1323:
1324: sub end_sub {
1325: my ($target,$token) = @_;
1326: my $currentstring = '';
1327: if ($target eq 'web') {
1328: $currentstring .= $token->[2];
1329: } elsif ($target eq 'tex') {
1330: $currentstring .= "}\$";
1331: }
1332: return $currentstring;
1333: }
1334:
1335: #-- <sup> tag (end tag required)
1336: sub start_sup {
1337: my ($target,$token) = @_;
1338: my $currentstring = '';
1339: if ($target eq 'web') {
1340: $currentstring .= $token->[4];
1341: } elsif ($target eq 'tex') {
1342: $currentstring .= "\$^{";
1343: }
1344: return $currentstring;
1345: }
1346:
1347: sub end_sup {
1348: my ($target,$token) = @_;
1349: my $currentstring = '';
1350: if ($target eq 'web') {
1351: $currentstring .= $token->[2];
1352: } elsif ($target eq 'tex') {
1353: $currentstring .= "}\$";
1354: }
1355: return $currentstring;
1356: }
1357:
1358: #-- <hr> tag (end tag forbidden)
1359: sub start_hr {
1360: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1361: my $currentstring = '';
1362: if ($target eq 'web') {
1363: $currentstring .= $token->[4];
1364: } elsif ($target eq 'tex') {
1365: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1366: if (defined $LaTeXwidth) {
1367: if ($LaTeXwidth=~/^%/) {
1368: substr($LaTeXwidth,0,1)='';
1369: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1370: }
1371: } else {
1372: $LaTeXwidth ='0.9\textwidth';
1373: }
1374: my ($pre,$post);
1375: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1376: if (($align eq 'center') || (not defined $align)) {
1377: $pre=''; $post='';
1378: } elsif ($align eq 'left') {
1379: $pre='\rlap{'; $post='} \hfill';
1380: } elsif ($align eq 'right') {
1381: $pre=' \hfill \llap{'; $post='}';
1382: }
1383: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1384: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1385: }
1386: return $currentstring;
1387: }
1388:
1389: sub end_hr {
1390: my ($target,$token) = @_;
1391: my $currentstring = '';
1392: if ($target eq 'web') {
1393: $currentstring .= $token->[2];
1394: }
1395: return $currentstring;
1396: }
1397:
1398: #-- <div> tag (end tag required)
1399: sub start_div {
1400: my ($target,$token) = @_;
1401: my $currentstring = '';
1402: if ($target eq 'web') {
1403: $currentstring .= $token->[4];
1404: }
1405: return $currentstring;
1406: }
1407:
1408: sub end_div {
1409: my ($target,$token) = @_;
1410: my $currentstring = '';
1411: if ($target eq 'web') {
1412: $currentstring .= $token->[2];
1413: }
1414: return $currentstring;
1415: }
1416:
1417: #-- <a> tag (end tag required)
1418: sub start_a {
1419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web') {
1422: $currentstring .= $token->[4];
1423: } elsif ($target eq 'tex') {
1424: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1425: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1426: if ($a=~/\S/) {
1427: $a=~s/([^\\])%/$1\\\%/g;
1428: $currentstring .= '\ref{URI: '.$a.'}';
1429: } elsif ($b=~/\S/) {
1430: $currentstring .= '\ref{Anchor: '.$b.'}';
1431: } else {
1432: $currentstring.='';
1433: }
1434: }
1435: return $currentstring;
1436: }
1437:
1438: sub end_a {
1439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1440: my $currentstring = '';
1441: if ($target eq 'web') {
1442: $currentstring .= $token->[2];
1443: }
1444: return $currentstring;
1445: }
1446:
1447: #-- <li> tag (end tag optional)
1448: sub start_li {
1449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1450: my $currentstring = '';
1451: if ($target eq 'web') {
1452: $currentstring = $token->[4];
1453: } elsif ($target eq 'tex') {
1454: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1455: if ($type=~/circle/) {
1456: $currentstring .= ' \item[o] ';
1457: } elsif ($type=~/square/) {
1458: $currentstring .= ' \item[$\Box$] ';
1459: } elsif ($type ne '') {
1460: $currentstring .= ' \item['.$type.'] ';
1461: } else {
1462: $currentstring .= ' \item ';
1463: }
1464: }
1465: return $currentstring;
1466: }
1467:
1468: sub end_li {
1469: my ($target,$token) = @_;
1470: my $currentstring = '';
1471: if ($target eq 'web') {
1472: $currentstring = $token->[2];
1473: }
1474: return $currentstring;
1475: }
1476:
1477: #-- <u> tag (end tag required)
1478: sub start_u {
1479: my ($target,$token) = @_;
1480: my $currentstring = '';
1481: if ($target eq 'web') {
1482: $currentstring .= $token->[4];
1483: } elsif ($target eq 'tex') {
1484: &Apache::lonxml::startredirection();
1485: }
1486: return $currentstring;
1487: }
1488:
1489: sub end_u {
1490: my ($target,$token) = @_;
1491: my $currentstring = '';
1492: if ($target eq 'web') {
1493: $currentstring .= $token->[2];
1494: } elsif ($target eq 'tex') {
1495: $currentstring=&Apache::lonxml::endredirection();
1496: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1497: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1498: $currentstring=~s/(\S)\s*$/$1\}/;
1499: }
1500: return $currentstring;
1501: }
1502:
1503: #-- <ul> tag (end tag required)
1504: sub start_ul {
1505: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1506: my $currentstring = '';
1507: if ($target eq 'web') {
1508: $currentstring = $token->[4];
1509: } elsif ($target eq 'tex') {
1510: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1511: if ($TeXtype eq 'disc') {
1512: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1513: \renewcommand{\labelitemii}{$\bullet$}
1514: \renewcommand{\labelitemiii}{$\bullet$}
1515: \renewcommand{\labelitemiv}{$\bullet$}';
1516: } elsif ($TeXtype eq 'circle') {
1517: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1518: \renewcommand{\labelitemii}{$\circ$}
1519: \renewcommand{\labelitemiii}{$\circ$}
1520: \renewcommand{\labelitemiv}{$\circ$}';
1521: } elsif ($TeXtype eq 'square') {
1522: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1523: \renewcommand{\labelitemii}{$\diamond$}
1524: \renewcommand{\labelitemiii}{$\diamond$}
1525: \renewcommand{\labelitemiv}{$\diamond$}';
1526: }
1527: $currentstring .= '\begin{itemize}';
1528: }
1529: return $currentstring;
1530: }
1531:
1532: sub end_ul {
1533: my ($target,$token) = @_;
1534: my $currentstring = '';
1535: if ($target eq 'web') {
1536: $currentstring = $token->[2];
1537: } elsif ($target eq 'tex') {
1538: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1539: \renewcommand{\labelitemii}{$\bullet$}
1540: \renewcommand{\labelitemiii}{$\bullet$}
1541: \renewcommand{\labelitemiv}{$\bullet$}';
1542: }
1543: return $currentstring;
1544: }
1545:
1546: #-- <menu> tag (end tag required)
1547: sub start_menu {
1548: my ($target,$token) = @_;
1549: my $currentstring = '';
1550: if ($target eq 'web') {
1551: $currentstring = $token->[4];
1552: } elsif ($target eq 'tex') {
1553: $currentstring = " \\begin{itemize} ";
1554: }
1555: return $currentstring;
1556: }
1557:
1558: sub end_menu {
1559: my ($target,$token) = @_;
1560: my $currentstring = '';
1561: if ($target eq 'web') {
1562: $currentstring = $token->[2];
1563: } elsif ($target eq 'tex') {
1564: $currentstring = " \\end{itemize}";
1565: }
1566: return $currentstring;
1567: }
1568:
1569: #-- <dir> tag (end tag required)
1570: sub start_dir {
1571: my ($target,$token) = @_;
1572: my $currentstring = '';
1573: if ($target eq 'web') {
1574: $currentstring = $token->[4];
1575: } elsif ($target eq 'tex') {
1576: $currentstring = " \\begin{itemize} ";
1577: }
1578: return $currentstring;
1579: }
1580:
1581: sub end_dir {
1582: my ($target,$token) = @_;
1583: my $currentstring = '';
1584: if ($target eq 'web') {
1585: $currentstring = $token->[2];
1586: } elsif ($target eq 'tex') {
1587: $currentstring = " \\end{itemize}";
1588: }
1589: return $currentstring;
1590: }
1591:
1592: #-- <ol> tag (end tag required)
1593: sub start_ol {
1594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web') {
1597: $currentstring = $token->[4];
1598: } elsif ($target eq 'tex') {
1599: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1600: if ($type eq '1') {
1601: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1602: \renewcommand{\labelenumii}{\arabic{enumii}.}
1603: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1604: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1605: } elsif ($type eq 'A') {
1606: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1607: \renewcommand{\labelenumii}{\Alph{enumii}.}
1608: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1609: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1610: } elsif ($type eq 'a') {
1611: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1612: \renewcommand{\labelenumii}{\alph{enumii}.}
1613: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1614: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1615: } elsif ($type eq 'i') {
1616: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1617: \renewcommand{\labelenumii}{\roman{enumii}.}
1618: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1619: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1620: } elsif ($type eq 'I') {
1621: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1622: \renewcommand{\labelenumii}{\Roman{enumii}.}
1623: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1624: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1625: }
1626: $currentstring .= '\begin{enumerate}';
1627: }
1628: return $currentstring;
1629: }
1630:
1631: sub end_ol {
1632: my ($target,$token) = @_;
1633: my $currentstring = '';
1634: if ($target eq 'web') {
1635: $currentstring = $token->[2];
1636: } elsif ($target eq 'tex') {
1637: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1638: \renewcommand{\labelenumii}{\arabic{enumii}.}
1639: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1640: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1641: }
1642: return $currentstring;
1643: }
1644:
1645: #-- <dl> tag (end tag required)
1646: sub start_dl {
1647: my ($target,$token) = @_;
1648: my $currentstring = '';
1649: if ($target eq 'web') {
1650: $currentstring = $token->[4];
1651: } elsif ($target eq 'tex') {
1652: $currentstring = '\begin{description}';
1653: @Apache::londefdef::description=();
1654: $Apache::londefdef::DD_redirection=0;
1655: $Apache::londefdef::DT_redirection=0;
1656: }
1657: return $currentstring;
1658: }
1659:
1660: sub end_dl {
1661: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1662: my $currentstring = '';
1663: if ($target eq 'web') {
1664: $currentstring = $token->[2];
1665: } elsif ($target eq 'tex') {
1666: if ($Apache::londefdef::DT_redirection) {
1667: my $data=&item_cleanup;
1668: push @Apache::londefdef::description,'\item['.$data.']';
1669: $Apache::londefdef::DT_redirection=0;
1670: } elsif ($Apache::londefdef::DD_redirection) {
1671: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1672: }
1673: foreach my $element (@Apache::londefdef::description) {
1674: $currentstring.=' '.$element.' ';
1675: }
1676: @Apache::londefdef::description=();
1677: $currentstring.='\end{description}';
1678: }
1679: return $currentstring;
1680: }
1681:
1682: #-- <dt> tag (end tag optional)
1683: sub start_dt {
1684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1685: my $currentstring='';
1686: if ($target eq 'web') {
1687: $currentstring = $token->[4];
1688: } elsif ($target eq 'tex') {
1689: if ($Apache::londefdef::DT_redirection) {
1690: my $data=&item_cleanup;
1691: push @Apache::londefdef::description,'\item['.$data.']';
1692: $Apache::londefdef::DT_redirection=0;
1693: } elsif ($Apache::londefdef::DD_redirection) {
1694: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1695: $Apache::londefdef::DD_redirection=0;
1696: }
1697: &Apache::lonxml::startredirection();
1698: $Apache::londefdef::DT_redirection=1;
1699: }
1700: return $currentstring;
1701: }
1702:
1703: sub end_dt {
1704: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1705: my $currentstring = '';
1706: if ($target eq 'web') {
1707: $currentstring = $token->[2];
1708: } elsif ($target eq 'tex') {
1709: my $data=&item_cleanup;
1710: push @Apache::londefdef::description,'\item['.$data.']';
1711: $Apache::londefdef::DT_redirection=0;
1712: }
1713: return $currentstring;
1714: }
1715:
1716: sub item_cleanup {
1717: my $item=&Apache::lonxml::endredirection();
1718: $item=~s/\\begin{center}//g;
1719: $item=~s/\\end{center}//g;
1720: return $item;
1721: }
1722:
1723: #-- <dd> tag (end tag optional)
1724: sub start_dd {
1725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1726: my $currentstring = '';
1727: if ($target eq 'web') {
1728: $currentstring = $token->[4];
1729: } elsif ($target eq 'tex') {
1730: if ($Apache::londefdef::DT_redirection) {
1731: my $data=&item_cleanup;
1732: push @Apache::londefdef::description,'\item['.$data.']';
1733: $Apache::londefdef::DT_redirection=0;
1734: }
1735: $Apache::londefdef::DD_redirection=1;
1736: &Apache::lonxml::startredirection();
1737: }
1738: return $currentstring;
1739: }
1740:
1741: sub end_dd {
1742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1743: my $currentstring = '';
1744: if ($target eq 'web') {
1745: $currentstring = $token->[2];
1746: } elsif ($target eq 'tex') {
1747: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1748: $Apache::londefdef::DD_redirection=0;
1749: }
1750: return $currentstring;
1751: }
1752:
1753: #-- <table> tag (end tag required)
1754: sub start_table {
1755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1756: my $textwidth='';
1757: if (not defined @Apache::londefdef::table) {
1758: $textwidth=&recalc($ENV{'form.textwidth'});
1759: $textwidth=~/(\d+\.?\d*)/;
1760: $textwidth=0.95*$1;
1761: } else {
1762: $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1763: }
1764: my $currentstring = '';
1765: if ($target eq 'web') {
1766: $currentstring = $token->[4];
1767: } elsif ($target eq 'tex') {
1768: my $aa = {};
1769: push @Apache::londefdef::table, $aa;
1770: $Apache::londefdef::table[-1]{'row_number'} = -1;
1771: #table's width
1772: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1773: if (not defined $TeXwidth) {
1774: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1775: if ($htmlwidth=~/%/) {
1776: $htmlwidth=~/(\d+)/;
1777: my $value=$1*$textwidth/100;
1778: $Apache::londefdef::table[-1]{'width'}=$value;
1779: } else {
1780: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1781: }
1782: } elsif ($TeXwidth=~/%/) {
1783: $TeXwidth=~/(\d+)/;
1784: my $value=$1*$textwidth/100;
1785: $Apache::londefdef::table[-1]{'width'}=$value;
1786: } else {
1787: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1788: }
1789: #table's border
1790: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);
1791: unless (defined $border) { $border = 0; }
1792: if ($border) {
1793: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1794: $Apache::londefdef::table[-1]{'vinc'} = '&';
1795: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1796: } else {
1797: $Apache::londefdef::table[-1]{'hinc'} = '';
1798: $Apache::londefdef::table[-1]{'vinc'} = '&';
1799: $Apache::londefdef::table[-1]{'vvinc'} = '';
1800: }
1801: $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
1802: $currentstring = '\keephidden{NEW TABLE ENTRY}';
1803: }
1804: return $currentstring;
1805: }
1806:
1807: sub end_table {
1808: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1809: my $currentstring = '';
1810: if ($target eq 'web') {
1811: $currentstring = $token->[2];
1812: } elsif ($target eq 'tex') {
1813: my $inmemory = '';
1814: my $output = '';
1815: #construct header of the table
1816: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1817: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
1818: $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
1819: }
1820: $header_of_table .= '}';
1821: #define the length of the table cells
1822: #always starts with TeXwidth (if defined everything else is ignored)
1823: my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
1824: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1825: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
1826: for (my $jn=0;$jn<=$#length_row;$jn++) {
1827: if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
1828: }
1829: }
1830: #continues trying estimate the width of raw data
1831: my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
1832: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1833: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
1834: for (my $jn=0;$jn<=$#length_row;$jn++) {
1835: if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
1836: }
1837: }
1838: #comparing of TeXwidth and raw data width
1839: my $available_length=$Apache::londefdef::table[-1]{'width'};
1840: my $needed=0;
1841: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1842: if ($length_row_final[$jn]!=0) {
1843: $available_length=$available_length-$length_row_final[$jn];
1844: $needed++;
1845: }
1846: }
1847: $needed=$#length_row_final-$needed+1;
1848: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1849: if ($length_row_final[$jn]==0) {
1850: if ($length_raw_row[$jn]<$available_length) {
1851: $length_row_final[$jn]=$length_raw_row[$jn];
1852: $available_length=$available_length-$length_raw_row[$jn];
1853: $needed--;
1854: }
1855: }
1856: }
1857: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1858: if ($length_row_final[$jn]==0) {
1859: $length_row_final[$jn]=0.9*$available_length/$needed;
1860: }
1861: }
1862: #fill the table
1863: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1864: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1865: my $substituted=$length_row_final[$jn];
1866: $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
1867: }
1868: $output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
1869: chop $output;
1870: $output .= ' \\\\ ';
1871: }
1872: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
1873: if ($#Apache::londefdef::table > 0) {
1874: my $inmemory = $Apache::londefdef::table[-1]{'output'};
1875: pop @Apache::londefdef::table;
1876: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
1877: } else {
1878: $currentstring .= $Apache::londefdef::table[-1]{'output'};
1879: pop @Apache::londefdef::table;
1880: undef @Apache::londefdef::table;
1881: }
1882: }
1883: return $currentstring;
1884: }
1885:
1886: #-- <tr> tag (end tag optional)
1887: sub start_tr {
1888: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1889: my $currentstring = '';
1890: if ($target eq 'web') {
1891: $currentstring = $token->[4];
1892: } elsif ($target eq 'tex') {
1893: $Apache::londefdef::table[-1]{'row_number'}++;
1894: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1895: if ($alignchar ne '') {
1896: push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
1897: } else {
1898: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
1899: }
1900: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
1901: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
1902: $Apache::londefdef::table[-1]{'TeXlength'} = '';
1903: $Apache::londefdef::table[-1]{'length'} = '';
1904: }
1905: return $currentstring;
1906: }
1907:
1908: sub end_tr {
1909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1910: my $currentstring = '';
1911: if ($target eq 'web') {
1912: $currentstring = $token->[2];
1913: } elsif ($target eq 'tex') {
1914: if ($Apache::londefdef::TD_redirection) {
1915: &end_td_tex($parstack,$parser,$safeeval);
1916: }
1917: push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
1918: push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
1919: }
1920: return $currentstring;
1921: }
1922:
1923: #-- <td> tag (end tag optional)
1924: sub start_td {
1925: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1926: my $currentstring = '';
1927: if ($target eq 'web') {
1928: $currentstring = $token->[4];
1929: } elsif ($target eq 'tex') {
1930: $Apache::londefdef::TD_redirection = 1;
1931: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
1932: }
1933: return $currentstring;
1934: }
1935:
1936: sub tag_check {
1937: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
1938: my @ar=@$parstack;
1939: for (my $i=$#ar-1;$i>=0;$i--) {
1940: if (lc($$tagstack[$i]) eq $good_tag) {
1941: &start_td_tex($parstack,$parser,$safeeval);
1942: last;
1943: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
1944: splice @ar, $i+1;
1945: &end_td_tex(\@ar,$parser,$safeeval);
1946: &start_td_tex($parstack,$parser,$safeeval);
1947: last;
1948: }
1949: }
1950: return '';
1951: }
1952:
1953: sub start_td_tex {
1954: my ($parstack,$parser,$safeeval) = @_;
1955: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1956: if ($what_to_push eq '') {
1957: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
1958: }
1959: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
1960: $Apache::londefdef::table[-1]{'counter_columns'}++;
1961: &Apache::lonxml::startredirection();
1962: return '';
1963: }
1964:
1965: sub end_td_tex {
1966: my ($parstack,$parser,$safeeval) = @_;
1967: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
1968: my $data=&Apache::lonxml::endredirection();
1969: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1970: if (defined $TeXwidth) {
1971: my $current_length=&recalc($TeXwidth);
1972: $current_length=~/(\d+)/;
1973: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
1974: $Apache::londefdef::table[-1]{'length'} .= '0,';
1975: } else {
1976: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
1977: my $current_length=&recalc($1);
1978: $current_length=~/(\d+\.?\d*)/;
1979: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
1980: $Apache::londefdef::table[-1]{'length'} .= '0,';
1981: } else {
1982: $data=~s/^\s+(\S.*)/$1/;
1983: $data=~s/(.*\S)\s+$/$1/;
1984: $data=~s/(\s)+/$1/;
1985: my $current_length=0;
1986: if ($data=~/\\vskip/) {
1987: my $newdata=$data;
1988: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
1989: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
1990: foreach my $elementdata (@newdata) {
1991: my $lengthnewdata=1.8*LATEX_length($elementdata);
1992: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
1993: }
1994: } else {
1995: $current_length=1.8*LATEX_length($data);
1996: }
1997: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
1998: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
1999: }
2000: }
2001: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2002: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2003: }
2004: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2005: return'';
2006: }
2007:
2008: sub end_td {
2009: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2010: my $currentstring = '';
2011: if ($target eq 'web') {
2012: $currentstring = $token->[2];
2013: } elsif ($target eq 'tex') {
2014: $Apache::londefdef::TD_redirection =0;
2015: &end_td_tex($parstack,$parser,$safeeval);
2016: }
2017: return $currentstring;
2018: }
2019:
2020: #-- <th> tag (end tag optional)
2021: sub start_th {
2022: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2023: my $currentstring = '';
2024: if ($target eq 'web') {
2025: $currentstring = $token->[4];
2026: } elsif ($target eq 'tex') {
2027: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2028: if ($what_to_push eq '') {
2029: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2030: }
2031: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2032: $Apache::londefdef::table[-1]{'counter_columns'}++;
2033: &Apache::lonxml::startredirection();
2034: }
2035: return $currentstring;
2036: }
2037:
2038: sub end_th {
2039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2040: my $currentstring = '';
2041: if ($target eq 'web') {
2042: $currentstring = $token->[2];
2043: } elsif ($target eq 'tex') {
2044: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2045: my $data=&Apache::lonxml::endredirection();
2046: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2047: if (defined $TeXwidth) {
2048: my $current_length=&recalc($TeXwidth);
2049: $current_length=~/(\d+)/;
2050: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2051: $Apache::londefdef::table[-1]{'length'} .= '0,';
2052: } else {
2053: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2054: my $current_length=&recalc($1);
2055: $current_length=~/(\d+)/;
2056: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2057: $Apache::londefdef::table[-1]{'length'} .= '0,';
2058: } else {
2059: $data=~/^\s*(\S.*)/;
2060: $data=$1;
2061: $data=~/(.*\S)\s*$/;
2062: $data=$1;
2063: my $current_length=2*length($data);
2064: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2065: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2066: }
2067: }
2068: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2069: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2070: }
2071: $data='\textbf{'.$data.'}';
2072: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2073: }
2074: return $currentstring;
2075: }
2076: #-- <img> tag (end tag forbidden)
2077: sub start_img {
2078: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2079: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2080: undef,1);
2081: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2082: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2083: &Apache::lonnet::logthis("inside was $inside");
2084: return '';
2085: }
2086: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2087: my $currentstring = '';
2088: my $width_param = '';
2089: my $height_param = '';
2090: my $scaling = .3;
2091: if ($target eq 'web') {
2092: if ($ENV{'browser.imagesuppress'} ne 'on') {
2093: $currentstring.= $token->[4];
2094: } else {
2095: my $alttag= &Apache::lonxml::get_param
2096: ('alt',$parstack,$safeeval,undef,1);
2097: unless ($alttag) {
2098: $alttag=&Apache::lonmeta::alttag
2099: ($Apache::lonxml::pwd[-1],$src);
2100: }
2101: $currentstring.='[IMAGE: '.$alttag.']';
2102: }
2103: } elsif ($target eq 'tex') {
2104: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2105: &image_replication($src);
2106: #if original gif/jpg/png file exist do following:
2107: if (-e $src) {
2108: #defines the default size of image
2109: my $image = Image::Magick->new;
2110: my $current_figure = $image->Read($src);
2111: $width_param = $image->Get('width') * $scaling;;
2112: $height_param = $image->Get('height') * $scaling;;
2113: undef $image;
2114: #do we have any specified size of the picture?
2115: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
2116: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
2117: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
2118: undef,1);
2119: if ($TeXwidth ne '') {
2120: if ($TeXwidth=~/(\d+)\s*\%/) {
2121: $width_param = $1*$ENV{'form.textwidth'}/100;
2122: } else {
2123: $width_param = $TeXwidth;
2124: }
2125: } elsif ($TeXheight ne '') {
2126: $width_param = $TeXheight/$height_param*$width_param;
2127: } elsif ($width ne '') {
2128: $width_param = $width*$scaling;
2129: }
2130: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
2131: my $file;
2132: my $path;
2133: if ($src =~ m!(.*)/([^/]*)$!) {
2134: $file = $2;
2135: $path = $1.'/';
2136: }
2137: my $newsrc = $src;
2138: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2139: $file=~s/\.(gif|jpg|png)$/.eps/i;
2140: #where can we find the picture?
2141: if (-e $newsrc) {
2142: #eps counterpart for image exist
2143: if ($path) {
2144: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2145: }
2146: } else {
2147: #there is no eps counterpart for image - check for ps one
2148: $newsrc =~ s/\.eps$/\.ps/;
2149: if (-e $newsrc) {
2150: #ps counterpart for image exist
2151: $file =~ s/\.eps$/\.ps/;
2152: if ($path) {
2153: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2154: }
2155: } else {
2156: #there aren't eps or ps - so create eps
2157: my $temp_file;
2158: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
2159: $temp_file = Apache::File->new('>>'.$filename);
2160: print $temp_file "$src\n";
2161: $newsrc=~s/\/home\/httpd\/html\/res//;
2162: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
2163: $newsrc=~s/\/\.\//\//;
2164: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
2165: $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2166: }
2167: }
2168: } else {
2169: #original image file doesn't exist so check the alt attribute
2170: my $alt =
2171: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2172: unless ($alt) {
2173: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2174: }
2175:
2176: if ($alt) {
2177: $currentstring .= ' '.$alt.' ';
2178: } else {
2179: #<allow> tag will care about replication
2180: }
2181: }
2182: } elsif ($target eq 'edit') {
2183: $currentstring .=&Apache::edit::tag_start($target,$token);
2184: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2185: &Apache::edit::browse('src',undef,'alt').' '.
2186: &Apache::edit::search('src',undef,'alt').'<br />';
2187: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2188: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2189: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2190: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2191: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2192: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2193: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2194: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2195: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2196: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2197: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2198: if ($width) { $currentstring.=' width="'.$width.'" '; }
2199: if ($height) { $currentstring.=' height="'.$height.'" '; }
2200: $currentstring .= ' />';
2201: } elsif ($target eq 'modified') {
2202: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2203: $safeeval,'src','alt',
2204: 'TeXwidth','TeXheight',
2205: 'width','height');
2206: $src=$token->[2]{'src'};
2207: if (!$token->[2]{'width'} && !$token->[2]{'height'}) {
2208: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2209: &image_replication($src);
2210: if (-e $src) {
2211: my $image = Image::Magick->new;
2212: my ($width, $height, $size, $format) = $image->Ping($src);
2213: if ($width && $height) {
2214: $token->[2]{'width'} =$width;
2215: $token->[2]{'height'}=$height;
2216: $constructtag=1;
2217: }
2218: }
2219: }
2220: if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2221: }
2222: return $currentstring;
2223: }
2224:
2225: sub end_img {
2226: my ($target,$token) = @_;
2227: my $currentstring = '';
2228: if ($target eq 'web') {
2229: $currentstring = $token->[2];
2230: } elsif ($target eq 'tex') {
2231: $currentstring = '';
2232: }
2233: return $currentstring;
2234: }
2235:
2236: #-- <applet> tag (end tag required)
2237: sub start_applet {
2238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2239:
2240: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2241: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2242:
2243: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2244: undef,1);
2245: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2246:
2247: my $currentstring = '';
2248: if ($target eq 'web') {
2249: if ($ENV{'browser.appletsuppress'} ne 'on') {
2250: $currentstring = $token->[4];
2251: } else {
2252: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2253: $safeeval,undef,1);
2254: unless ($alttag) {
2255: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2256: $code);
2257: }
2258: $currentstring='[APPLET: '.$alttag.']';
2259: }
2260: } elsif ($target eq 'tex') {
2261: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2262: $safeeval,undef,1);
2263: unless ($alttag) {
2264: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2265: undef,1);
2266: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2267: $code);
2268: }
2269: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2270: '.}\end{center}';
2271: }
2272: return $currentstring;
2273: }
2274:
2275: sub end_applet {
2276: my ($target,$token) = @_;
2277: my $currentstring = '';
2278: if ($target eq 'web') {
2279: $currentstring = $token->[2];
2280: } elsif ($target eq 'tex') {
2281: }
2282: return $currentstring;
2283: }
2284:
2285: #-- <embed> tag (end tag optional/required)
2286: sub start_embed {
2287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2288: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2289: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2290: my $currentstring = '';
2291: if ($target eq 'web') {
2292: if ($ENV{'browser.embedsuppress'} ne 'on') {
2293: $currentstring = $token->[4];
2294: } else {
2295: my $alttag=&Apache::lonxml::get_param
2296: ('alt',$parstack,$safeeval,undef,1);
2297: unless ($alttag) {
2298: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2299: }
2300: $currentstring='[EMBED: '.$alttag.']';
2301: }
2302: } elsif ($target eq 'tex') {
2303: }
2304: return $currentstring;
2305: }
2306:
2307: sub end_embed {
2308: my ($target,$token) = @_;
2309: my $currentstring = '';
2310: if ($target eq 'web') {
2311: $currentstring = $token->[2];
2312: } elsif ($target eq 'tex') {
2313: }
2314: return $currentstring;
2315: }
2316:
2317: #-- <param> tag (end tag forbidden)
2318: sub start_param {
2319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2320: if (&Apache::lonxml::get_param
2321: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2322: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2323: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2324: }
2325: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2326: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2327: my $currentstring = '';
2328: if ($target eq 'web') {
2329: $currentstring = $token->[4];
2330: } elsif ($target eq 'tex') {
2331: }
2332: return $currentstring;
2333: }
2334:
2335: sub end_param {
2336: my ($target,$token) = @_;
2337: my $currentstring = '';
2338: if ($target eq 'web') {
2339: $currentstring = $token->[2];
2340: } elsif ($target eq 'tex') {
2341: }
2342: return $currentstring;
2343: }
2344:
2345: #-- <allow> tag
2346: sub start_allow {
2347: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2348: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2349: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2350: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2351: &Apache::lonnet::clutter($src);
2352: &image_replication($src);
2353: my $result;
2354: if ($target eq 'edit') {
2355: $result .=&Apache::edit::tag_start($target,$token);
2356: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2357: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2358: } elsif ($target eq 'modified') {
2359: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2360: $safeeval,'src');
2361: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2362: }
2363: return $result;
2364: }
2365:
2366: sub end_allow {
2367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2368: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2369: return '';
2370: }
2371:
2372: #-- Frames (end tag required)
2373: #-- <frameset>
2374: sub start_frameset {
2375: my ($target,$token) = @_;
2376: my $currentstring = '';
2377: if ($target eq 'web') {
2378: if (!$Apache::lonxml::registered &&
2379: $ENV{'request.state'} eq 'published') {
2380: $currentstring.='<head>'.
2381: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2382: }
2383: my $onLoad='';
2384: foreach my $key (keys(%{$token->[2]})) {
2385: if ($key =~ /^onload$/i) {
2386: $onLoad.=$token->[2]->{$key}.';';
2387: delete($token->[2]->{$key});
2388: }
2389: }
2390: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2391: my $onUnload='';
2392: foreach my $key (keys(%{$token->[2]})) {
2393: if ($key =~ /^onunload$/i) {
2394: $onUnload.=$token->[2]->{$key}.';';
2395: delete($token->[2]->{$key});
2396: }
2397: }
2398: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2399: ';'.$onUnload;
2400:
2401: $currentstring .= '<'.$token->[1];
2402: foreach (keys %{$token->[2]}) {
2403: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2404: }
2405: $currentstring.='>';
2406: }
2407: return $currentstring;
2408: }
2409:
2410: sub end_frameset {
2411: my ($target,$token) = @_;
2412: my $currentstring = '';
2413: if ($target eq 'web') {
2414: $currentstring = $token->[2];
2415: }
2416: return $currentstring;
2417: }
2418:
2419: #-- <xmp> (end tag required)
2420: sub start_xmp {
2421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2422: my $currentstring = '';
2423: if ($target eq 'web') {
2424: $currentstring .= $token->[4];
2425: } elsif ($target eq 'tex') {
2426: $currentstring .= '\begin{verbatim}';
2427: }
2428: return $currentstring;
2429: }
2430:
2431: sub end_xmp {
2432: my ($target,$token) = @_;
2433: my $currentstring = '';
2434: if ($target eq 'web') {
2435: $currentstring .= $token->[2];
2436: } elsif ($target eq 'tex') {
2437: $currentstring .= '\end{verbatim}';
2438: }
2439: return $currentstring;
2440: }
2441:
2442: #-- <pre> (end tag required)
2443: sub start_pre {
2444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2445: my $currentstring = '';
2446: if ($target eq 'web') {
2447: $currentstring .= $token->[4];
2448: } elsif ($target eq 'tex') {
2449: $currentstring .= '\begin{verbatim}';
2450: }
2451: return $currentstring;
2452: }
2453:
2454: sub end_pre {
2455: my ($target,$token) = @_;
2456: my $currentstring = '';
2457: if ($target eq 'web') {
2458: $currentstring .= $token->[2];
2459: } elsif ($target eq 'tex') {
2460: $currentstring .= '\end{verbatim}';
2461: }
2462: return $currentstring;
2463: }
2464:
2465: #-- <insert>
2466: sub start_insert {
2467: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2468: my $currentstring = '';
2469: if ($target eq 'web') {
2470: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2471: $currentstring .= '<b>'.$display.'</b>';;
2472: }
2473: return $currentstring;
2474: }
2475:
2476: sub end_insert {
2477: my ($target,$token) = @_;
2478: my $currentstring = '';
2479: if ($target eq 'web') {
2480: $currentstring .= '';
2481: }
2482: return $currentstring;
2483: }
2484:
2485: #-- <externallink>
2486: sub start_externallink {
2487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2488: my $currentstring = '';
2489: if ($target eq 'web') {
2490: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2491: $currentstring .= '<b>'.$display.'</b>';;
2492: }
2493: return $currentstring;
2494: }
2495:
2496: sub end_externallink {
2497: my ($target,$token) = @_;
2498: my $currentstring = '';
2499: if ($target eq 'web') {
2500: $currentstring .= '';
2501: }
2502: return $currentstring;
2503: }
2504:
2505: #-- <blankspace heigth="">
2506: sub start_blankspace {
2507: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2508: my $currentstring = '';
2509: if ($target eq 'tex') {
2510: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2511: $currentstring .= '\vskip '.$howmuch.' ';
2512: }
2513: return $currentstring;
2514: }
2515:
2516: sub end_blankspace {
2517: my ($target,$token) = @_;
2518: my $currentstring = '';
2519: if ($target eq 'tex') {
2520: $currentstring .= '';
2521: }
2522: return $currentstring;
2523: }
2524:
2525: #-- <abbr> tag (end tag required)
2526: sub start_abbr {
2527: my ($target,$token) = @_;
2528: my $currentstring = '';
2529: if ($target eq 'web') {
2530: $currentstring = $token->[4];
2531: }
2532: return $currentstring;
2533: }
2534:
2535: sub end_abbr {
2536: my ($target,$token) = @_;
2537: my $currentstring = '';
2538: if ($target eq 'web') {
2539: $currentstring = $token->[2];
2540: }
2541: return $currentstring;
2542: }
2543:
2544: #-- <acronym> tag (end tag required)
2545: sub start_acronym {
2546: my ($target,$token) = @_;
2547: my $currentstring = '';
2548: if ($target eq 'web') {
2549: $currentstring = $token->[4];
2550: }
2551: return $currentstring;
2552: }
2553:
2554: sub end_acronym {
2555: my ($target,$token) = @_;
2556: my $currentstring = '';
2557: if ($target eq 'web') {
2558: $currentstring = $token->[2];
2559: }
2560: return $currentstring;
2561: }
2562:
2563: #-- <area> tag (end tag forbidden)
2564: sub start_area {
2565: my ($target,$token) = @_;
2566: my $currentstring = '';
2567: if ($target eq 'web') {
2568: $currentstring = $token->[4];
2569: }
2570: return $currentstring;
2571: }
2572:
2573: sub end_area {
2574: my ($target,$token) = @_;
2575: my $currentstring = '';
2576: if ($target eq 'web') {
2577: $currentstring = $token->[2];
2578: }
2579: return $currentstring;
2580: }
2581:
2582: #-- <base> tag (end tag forbidden)
2583: sub start_base {
2584: my ($target,$token) = @_;
2585: my $currentstring = '';
2586: if ($target eq 'web') {
2587: $currentstring = $token->[4];
2588: }
2589: return $currentstring;
2590: }
2591:
2592: sub end_base {
2593: my ($target,$token) = @_;
2594: my $currentstring = '';
2595: if ($target eq 'web') {
2596: $currentstring = $token->[2];
2597: }
2598: return $currentstring;
2599: }
2600:
2601: #-- <bdo> tag (end tag required)
2602: sub start_bdo {
2603: my ($target,$token) = @_;
2604: my $currentstring = '';
2605: if ($target eq 'web') {
2606: $currentstring = $token->[4];
2607: }
2608: return $currentstring;
2609: }
2610:
2611: sub end_bdo {
2612: my ($target,$token) = @_;
2613: my $currentstring = '';
2614: if ($target eq 'web') {
2615: $currentstring = $token->[2];
2616: }
2617: return $currentstring;
2618: }
2619:
2620: #-- <bgsound> tag (end tag optional)
2621: sub start_bgsound {
2622: my ($target,$token) = @_;
2623: my $currentstring = '';
2624: if ($target eq 'web') {
2625: $currentstring = $token->[4];
2626: }
2627: return $currentstring;
2628: }
2629:
2630: sub end_bgsound {
2631: my ($target,$token) = @_;
2632: my $currentstring = '';
2633: if ($target eq 'web') {
2634: $currentstring = $token->[2];
2635: }
2636: return $currentstring;
2637: }
2638:
2639: #-- <blink> tag (end tag required)
2640: sub start_blink {
2641: my ($target,$token) = @_;
2642: my $currentstring = '';
2643: if ($target eq 'web') {
2644: $currentstring = $token->[4];
2645: }
2646: return $currentstring;
2647: }
2648:
2649: sub end_blink {
2650: my ($target,$token) = @_;
2651: my $currentstring = '';
2652: if ($target eq 'web') {
2653: $currentstring = $token->[2];
2654: }
2655: return $currentstring;
2656: }
2657:
2658: #-- <blockquote> tag (end tag required)
2659: sub start_blockquote {
2660: my ($target,$token) = @_;
2661: my $currentstring = '';
2662: if ($target eq 'web') {
2663: $currentstring = $token->[4];
2664: }
2665: return $currentstring;
2666: }
2667:
2668: sub end_blockquote {
2669: my ($target,$token) = @_;
2670: my $currentstring = '';
2671: if ($target eq 'web') {
2672: $currentstring = $token->[2];
2673: }
2674: return $currentstring;
2675: }
2676:
2677: #-- <button> tag (end tag required)
2678: sub start_button {
2679: my ($target,$token) = @_;
2680: my $currentstring = '';
2681: if ($target eq 'web') {
2682: $currentstring = $token->[4];
2683: }
2684: return $currentstring;
2685: }
2686:
2687: sub end_button {
2688: my ($target,$token) = @_;
2689: my $currentstring = '';
2690: if ($target eq 'web') {
2691: $currentstring = $token->[2];
2692: }
2693: return $currentstring;
2694: }
2695:
2696: #-- <caption> tag (end tag required)
2697: sub start_caption {
2698: my ($target,$token) = @_;
2699: my $currentstring = '';
2700: if ($target eq 'web') {
2701: $currentstring = $token->[4];
2702: }
2703: return $currentstring;
2704: }
2705:
2706: sub end_caption {
2707: my ($target,$token) = @_;
2708: my $currentstring = '';
2709: if ($target eq 'web') {
2710: $currentstring = $token->[2];
2711: }
2712: return $currentstring;
2713: }
2714:
2715: #-- <col> tag (end tag forbdden)
2716: sub start_col {
2717: my ($target,$token) = @_;
2718: my $currentstring = '';
2719: if ($target eq 'web') {
2720: $currentstring = $token->[4];
2721: }
2722: return $currentstring;
2723: }
2724:
2725: sub end_col {
2726: my ($target,$token) = @_;
2727: my $currentstring = '';
2728: if ($target eq 'web') {
2729: $currentstring = $token->[2];
2730: }
2731: return $currentstring;
2732: }
2733:
2734: #-- <colgroup> tag (end tag optional)
2735: sub start_colgroup {
2736: my ($target,$token) = @_;
2737: my $currentstring = '';
2738: if ($target eq 'web') {
2739: $currentstring = $token->[4];
2740: }
2741: return $currentstring;
2742: }
2743:
2744: sub end_colgroup {
2745: my ($target,$token) = @_;
2746: my $currentstring = '';
2747: if ($target eq 'web') {
2748: $currentstring = $token->[2];
2749: }
2750: return $currentstring;
2751: }
2752:
2753: #-- <del> tag (end tag required)
2754: sub start_del {
2755: my ($target,$token) = @_;
2756: my $currentstring = '';
2757: if ($target eq 'web') {
2758: $currentstring = $token->[4];
2759: }
2760: return $currentstring;
2761: }
2762:
2763: sub end_del {
2764: my ($target,$token) = @_;
2765: my $currentstring = '';
2766: if ($target eq 'web') {
2767: $currentstring = $token->[2];
2768: }
2769: return $currentstring;
2770: }
2771:
2772: #-- <fieldset> tag (end tag required)
2773: sub start_fieldset {
2774: my ($target,$token) = @_;
2775: my $currentstring = '';
2776: if ($target eq 'web') {
2777: $currentstring = $token->[4];
2778: }
2779: return $currentstring;
2780: }
2781:
2782: sub end_fieldset {
2783: my ($target,$token) = @_;
2784: my $currentstring = '';
2785: if ($target eq 'web') {
2786: $currentstring = $token->[2];
2787: }
2788: return $currentstring;
2789: }
2790:
2791: #-- <frame> tag (end tag forbidden)
2792: sub start_frame {
2793: my ($target,$token) = @_;
2794: my $currentstring = '';
2795: if ($target eq 'web') {
2796: $currentstring = $token->[4];
2797: }
2798: return $currentstring;
2799: }
2800:
2801: sub end_frame {
2802: my ($target,$token) = @_;
2803: my $currentstring = '';
2804: if ($target eq 'web') {
2805: $currentstring = $token->[2];
2806: }
2807: return $currentstring;
2808: }
2809:
2810: #-- <iframe> tag (end tag required)
2811: sub start_iframe {
2812: my ($target,$token) = @_;
2813: my $currentstring = '';
2814: if ($target eq 'web') {
2815: $currentstring = $token->[4];
2816: }
2817: return $currentstring;
2818: }
2819:
2820: sub end_iframe {
2821: my ($target,$token) = @_;
2822: my $currentstring = '';
2823: if ($target eq 'web') {
2824: $currentstring = $token->[2];
2825: }
2826: return $currentstring;
2827: }
2828:
2829: #-- <ins> tag (end tag required)
2830: sub start_ins {
2831: my ($target,$token) = @_;
2832: my $currentstring = '';
2833: if ($target eq 'web') {
2834: $currentstring = $token->[4];
2835: }
2836: return $currentstring;
2837: }
2838:
2839: sub end_ins {
2840: my ($target,$token) = @_;
2841: my $currentstring = '';
2842: if ($target eq 'web') {
2843: $currentstring = $token->[2];
2844: }
2845: return $currentstring;
2846: }
2847:
2848: #-- <isindex> tag (end tag forbidden)
2849: sub start_isindex {
2850: my ($target,$token) = @_;
2851: my $currentstring = '';
2852: if ($target eq 'web') {
2853: $currentstring = $token->[4];
2854: }
2855: return $currentstring;
2856: }
2857:
2858: sub end_isindex {
2859: my ($target,$token) = @_;
2860: my $currentstring = '';
2861: if ($target eq 'web') {
2862: $currentstring = $token->[2];
2863: }
2864: return $currentstring;
2865: }
2866:
2867: #-- <keygen> tag (end tag forbidden)
2868: sub start_keygen {
2869: my ($target,$token) = @_;
2870: my $currentstring = '';
2871: if ($target eq 'web') {
2872: $currentstring = $token->[4];
2873: }
2874: return $currentstring;
2875: }
2876:
2877: sub end_keygen {
2878: my ($target,$token) = @_;
2879: my $currentstring = '';
2880: if ($target eq 'web') {
2881: $currentstring = $token->[2];
2882: }
2883: return $currentstring;
2884: }
2885:
2886: #-- <label> tag
2887: sub start_label {
2888: my ($target,$token) = @_;
2889: my $currentstring = '';
2890: if ($target eq 'web') {
2891: $currentstring = $token->[4];
2892: }
2893: return $currentstring;
2894: }
2895:
2896: sub end_label {
2897: my ($target,$token) = @_;
2898: my $currentstring = '';
2899: if ($target eq 'web') {
2900: $currentstring = $token->[2];
2901: }
2902: return $currentstring;
2903: }
2904:
2905: #-- <layer> tag (end tag required)
2906: sub start_layer {
2907: my ($target,$token) = @_;
2908: my $currentstring = '';
2909: if ($target eq 'web') {
2910: $currentstring = $token->[4];
2911: }
2912: return $currentstring;
2913: }
2914:
2915: sub end_layer {
2916: my ($target,$token) = @_;
2917: my $currentstring = '';
2918: if ($target eq 'web') {
2919: $currentstring = $token->[2];
2920: }
2921: return $currentstring;
2922: }
2923:
2924: #-- <legend> tag (end tag required)
2925: sub start_legend {
2926: my ($target,$token) = @_;
2927: my $currentstring = '';
2928: if ($target eq 'web') {
2929: $currentstring = $token->[4];
2930: }
2931: return $currentstring;
2932: }
2933:
2934: sub end_legend {
2935: my ($target,$token) = @_;
2936: my $currentstring = '';
2937: if ($target eq 'web') {
2938: $currentstring = $token->[2];
2939: }
2940: return $currentstring;
2941: }
2942:
2943: #-- <link> tag (end tag forbidden)
2944: sub start_link {
2945: my ($target,$token) = @_;
2946: my $currentstring = '';
2947: if ($target eq 'web') {
2948: $currentstring = $token->[4];
2949: }
2950: return $currentstring;
2951: }
2952:
2953: sub end_link {
2954: my ($target,$token) = @_;
2955: my $currentstring = '';
2956: if ($target eq 'web') {
2957: $currentstring = $token->[2];
2958: }
2959: return $currentstring;
2960: }
2961:
2962: #-- <marquee> tag (end tag optional)
2963: sub start_marquee {
2964: my ($target,$token) = @_;
2965: my $currentstring = '';
2966: if ($target eq 'web') {
2967: $currentstring = $token->[4];
2968: }
2969: return $currentstring;
2970: }
2971:
2972: sub end_marquee {
2973: my ($target,$token) = @_;
2974: my $currentstring = '';
2975: if ($target eq 'web') {
2976: $currentstring = $token->[2];
2977: }
2978: return $currentstring;
2979: }
2980:
2981: #-- <multicol> tag (end tag required)
2982: sub start_multicol {
2983: my ($target,$token) = @_;
2984: my $currentstring = '';
2985: if ($target eq 'web') {
2986: $currentstring = $token->[4];
2987: }
2988: return $currentstring;
2989: }
2990:
2991: sub end_multicol {
2992: my ($target,$token) = @_;
2993: my $currentstring = '';
2994: if ($target eq 'web') {
2995: $currentstring = $token->[2];
2996: }
2997: return $currentstring;
2998: }
2999:
3000: #-- <nobr> tag (end tag required)
3001: sub start_nobr {
3002: my ($target,$token) = @_;
3003: my $currentstring = '';
3004: if ($target eq 'web') {
3005: $currentstring = $token->[4];
3006: } elsif ($target eq 'tex') {
3007: $currentstring='\mbox{';
3008: }
3009: return $currentstring;
3010: }
3011:
3012: sub end_nobr {
3013: my ($target,$token) = @_;
3014: my $currentstring = '';
3015: if ($target eq 'web') {
3016: $currentstring = $token->[2];
3017: } elsif ($target eq 'tex') {
3018: $currentstring='}';
3019: }
3020: return $currentstring;
3021: }
3022:
3023: #-- <noembed> tag (end tag required)
3024: sub start_noembed {
3025: my ($target,$token) = @_;
3026: my $currentstring = '';
3027: if ($target eq 'web') {
3028: $currentstring = $token->[4];
3029: }
3030: return $currentstring;
3031: }
3032:
3033: sub end_noembed {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[2];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: #-- <noframes> tag (end tag required)
3043: sub start_noframes {
3044: my ($target,$token) = @_;
3045: my $currentstring = '';
3046: if ($target eq 'web') {
3047: $currentstring = $token->[4];
3048: }
3049: return $currentstring;
3050: }
3051:
3052: sub end_noframes {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[2];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: #-- <nolayer> tag (end tag required)
3062: sub start_nolayer {
3063: my ($target,$token) = @_;
3064: my $currentstring = '';
3065: if ($target eq 'web') {
3066: $currentstring = $token->[4];
3067: }
3068: return $currentstring;
3069: }
3070:
3071: sub end_nolayer {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[2];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: #-- <noscript> tag (end tag required)
3081: sub start_noscript {
3082: my ($target,$token) = @_;
3083: my $currentstring = '';
3084: if ($target eq 'web') {
3085: $currentstring = $token->[4];
3086: }
3087: return $currentstring;
3088: }
3089:
3090: sub end_noscript {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[2];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: #-- <object> tag (end tag required)
3100: sub start_object {
3101: my ($target,$token) = @_;
3102: my $currentstring = '';
3103: if ($target eq 'web') {
3104: $currentstring = $token->[4];
3105: }
3106: return $currentstring;
3107: }
3108:
3109: sub end_object {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[2];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: #-- <optgroup> tag (end tag required)
3119: sub start_optgroup {
3120: my ($target,$token) = @_;
3121: my $currentstring = '';
3122: if ($target eq 'web') {
3123: $currentstring = $token->[4];
3124: }
3125: return $currentstring;
3126: }
3127:
3128: sub end_optgroup {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[2];
3133: }
3134: return $currentstring;
3135: }
3136:
3137: #-- <samp> tag (end tag required)
3138: sub start_samp {
3139: my ($target,$token) = @_;
3140: my $currentstring = '';
3141: if ($target eq 'web') {
3142: $currentstring = $token->[4];
3143: } elsif ($target eq 'tex') {
3144: $currentstring='\texttt{';
3145: }
3146: return $currentstring;
3147: }
3148:
3149: sub end_samp {
3150: my ($target,$token) = @_;
3151: my $currentstring = '';
3152: if ($target eq 'web') {
3153: $currentstring = $token->[2];
3154: } elsif ($target eq 'tex') {
3155: $currentstring='}';
3156: }
3157: return $currentstring;
3158: }
3159:
3160: #-- <server> tag
3161: sub start_server {
3162: my ($target,$token) = @_;
3163: my $currentstring = '';
3164: if ($target eq 'web') {
3165: $currentstring = $token->[4];
3166: }
3167: return $currentstring;
3168: }
3169:
3170: sub end_server {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web') {
3174: $currentstring = $token->[2];
3175: }
3176: return $currentstring;
3177: }
3178:
3179: #-- <spacer> tag (end tag forbidden)
3180: sub start_spacer {
3181: my ($target,$token) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web') {
3184: $currentstring = $token->[4];
3185: }
3186: return $currentstring;
3187: }
3188:
3189: sub end_spacer {
3190: my ($target,$token) = @_;
3191: my $currentstring = '';
3192: if ($target eq 'web') {
3193: $currentstring = $token->[2];
3194: }
3195: return $currentstring;
3196: }
3197:
3198: #-- <span> tag (end tag required)
3199: sub start_span {
3200: my ($target,$token) = @_;
3201: my $currentstring = '';
3202: if ($target eq 'web') {
3203: $currentstring = $token->[4];
3204: }
3205: return $currentstring;
3206: }
3207:
3208: sub end_span {
3209: my ($target,$token) = @_;
3210: my $currentstring = '';
3211: if ($target eq 'web') {
3212: $currentstring = $token->[2];
3213: }
3214: return $currentstring;
3215: }
3216:
3217: #-- <tbody> tag (end tag optional)
3218: sub start_tbody {
3219: my ($target,$token) = @_;
3220: my $currentstring = '';
3221: if ($target eq 'web') {
3222: $currentstring = $token->[4];
3223: }
3224: return $currentstring;
3225: }
3226:
3227: sub end_tbody {
3228: my ($target,$token) = @_;
3229: my $currentstring = '';
3230: if ($target eq 'web') {
3231: $currentstring = $token->[2];
3232: }
3233: return $currentstring;
3234: }
3235:
3236: #-- <tfoot> tag (end tag optional)
3237: sub start_tfoot {
3238: my ($target,$token) = @_;
3239: my $currentstring = '';
3240: if ($target eq 'web') {
3241: $currentstring = $token->[4];
3242: }
3243: return $currentstring;
3244: }
3245:
3246: sub end_tfoot {
3247: my ($target,$token) = @_;
3248: my $currentstring = '';
3249: if ($target eq 'web') {
3250: $currentstring = $token->[2];
3251: }
3252: return $currentstring;
3253: }
3254:
3255: #-- <thead> tag (end tag optional)
3256: sub start_thead {
3257: my ($target,$token) = @_;
3258: my $currentstring = '';
3259: if ($target eq 'web') {
3260: $currentstring = $token->[4];
3261: }
3262: return $currentstring;
3263: }
3264:
3265: sub end_thead {
3266: my ($target,$token) = @_;
3267: my $currentstring = '';
3268: if ($target eq 'web') {
3269: $currentstring = $token->[2];
3270: }
3271: return $currentstring;
3272: }
3273:
3274: #-- <var> tag
3275: sub start_var {
3276: my ($target,$token) = @_;
3277: my $currentstring = '';
3278: if ($target eq 'web') {
3279: $currentstring = $token->[4];
3280: } elsif ($target eq 'tex') {
3281: $currentstring = '\textit{';
3282: }
3283: return $currentstring;
3284: }
3285:
3286: sub end_var {
3287: my ($target,$token) = @_;
3288: my $currentstring = '';
3289: if ($target eq 'web') {
3290: $currentstring = $token->[2];
3291: } elsif ($target eq 'tex') {
3292: $currentstring = '}';
3293: }
3294: return $currentstring;
3295: }
3296:
3297: #-- <wbr> tag (end tag forbidden)
3298: sub start_wbr {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web') {
3302: $currentstring = $token->[4];
3303: }
3304: return $currentstring;
3305: }
3306:
3307: sub end_wbr {
3308: my ($target,$token) = @_;
3309: my $currentstring = '';
3310: if ($target eq 'web') {
3311: $currentstring = $token->[2];
3312: }
3313: return $currentstring;
3314: }
3315:
3316: #-- <hideweboutput> tag
3317: sub start_hideweboutput {
3318: my ($target,$token) = @_;
3319: if ($target eq 'web') {
3320: &Apache::lonxml::startredirection();
3321: }
3322: return '';
3323: }
3324:
3325: sub end_hideweboutput {
3326: my ($target,$token) = @_;
3327: my $currentstring = '';
3328: if ($target eq 'web') {
3329: $currentstring = &Apache::lonxml::endredirection();
3330: }
3331: return '';
3332: }
3333:
3334:
3335: sub image_replication {
3336: my $src = shift;
3337: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3338: #replicates eps or ps
3339: my $epssrc = my $pssrc = $src;
3340: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3341: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3342: if (not -e $epssrc && not -e $pssrc) {
3343: my $result=&Apache::lonnet::repcopy($epssrc);
3344: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3345: }
3346: return '';
3347: }
3348:
3349: sub recalc {
3350: my $argument = shift;
3351: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3352: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3353: my $value=$1;
3354: my $units=$2;
3355: if ($units eq 'cm') {
3356: $value*=10;
3357: } elsif ($units eq 'in') {
3358: $value*=25.4;
3359: } elsif ($units eq 'pc') {
3360: $value*=(25.4*12/72.27);
3361: } elsif ($units eq 'pt') {
3362: $value*=(25.4/72.27);
3363: }
3364: return $value.' mm';
3365: }
3366:
3367: sub LATEX_length {
3368: my $garbage=shift;
3369: $garbage=~s/^\s+(\S.*)/$1/;
3370: $garbage=~s/(.*\S)\s+$/$1/;
3371: $garbage=~s/(\s)+/$1/;
3372: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;
3373: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;
3374: $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;
3375: $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;
3376: $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;
3377: $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;
3378: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/1/g;
3379: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/ /g;
3380: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3381: my $value=length($garbage);
3382: return $value;
3383: }
3384:
3385:
3386:
3387:
3388: 1;
3389: __END__
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