1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.191 2003/11/15 12:46:41 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 $inside = &Apache::lonxml::get_all_text("/m",$parser,$style);
88: $inside=~s-<LONCAPA_INTERNAL_TURN_STYLE_ON />--g;
89: if ($target eq 'web' || $target eq 'analyze') {
90: $Apache::lonxml::prevent_entity_encode++;
91: $inside ='\\documentstyle{article}'.$inside;
92: &Apache::lonxml::debug("M is starting with:$inside:");
93: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
94: if ($eval eq 'on') {
95: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
96: #&Apache::lonxml::debug("M is evaulated to:$inside:");
97: }
98: $currentstring = &Apache::lontexconvert::converted(\$inside);
99: if ($Apache::lontexconvert::errorstring) {
100: &Apache::lonxml::warning("tth error: ".
101: $Apache::lontexconvert::errorstring);
102: $Apache::lontexconvert::errorstring='';
103: }
104: #&Apache::lonxml::debug("M is ends with:$currentstring:");
105: $Apache::lonxml::post_evaluate=0;
106: } elsif ($target eq 'tex') {
107: $currentstring = $inside;
108: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
109: if ($eval eq 'on') {
110: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
111: }
112: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
113: $Apache::lonxml::post_evaluate=0;
114: }
115: return $currentstring;
116: }
117:
118: sub end_m {
119: my ($target,$token) = @_;
120: my $currentstring = '';
121: if ($target eq 'web') {
122: $Apache::lonxml::prevent_entity_encode--;
123: } elsif ($target eq 'tex') {
124: $currentstring = "";
125: } elsif ($target eq 'meta') {
126: }
127: return $currentstring;
128: }
129:
130: sub start_tthoption {
131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
132: my $result;
133: if ($target eq 'web') {
134: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
135: $inside=~s/^\s*//;
136: if ($ENV{'browser.mathml'}) {
137: &tth::ttmoptions($inside);
138: } else {
139: &tth::tthoptions($inside);
140: }
141: }
142: return $result;
143: }
144:
145: sub end_tthoption {
146: my ($target,$token) = @_;
147: my $result;
148: return $result;
149: }
150:
151: #-- <html> tag (end tag optional)
152: sub start_html {
153: my ($target,$token) = @_;
154: my $currentstring = '';
155: if ($ENV{'browser.mathml'}) {
156: &tth::ttminit();
157: if ($ENV{'browser.unicode'}) {
158: &tth::ttmoptions('-L -u1');
159: } else {
160: &tth::ttmoptions('-L -u0');
161: }
162: } else {
163: &tth::tthinit();
164: if ($ENV{'browser.unicode'}) {
165: &tth::tthoptions('-L -u1');
166: } else {
167: &tth::tthoptions('-L -u0');
168: }
169: }
170: if ($target eq 'web' || $target eq 'edit') {
171: $currentstring = &Apache::lonxml::xmlbegin().
172: &Apache::lonxml::fontsettings();
173: } elsif ($target eq 'tex') {
174: @Apache::londefdef::table = ();
175: $currentstring .= '\documentclass[letterpaper]{article}';
176: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
177: $currentstring .= '\newcommand{\keephidden}[1]{}
178: \renewcommand{\deg}{$^{\circ}$}
179: \usepackage{longtable}
180: \usepackage{textcomp}
181: \usepackage{makeidx}
182: \usepackage[dvips]{graphicx}
183: \usepackage{epsfig}\usepackage{calc}
184: \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}}
185: \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}}';
186: }
187: return $currentstring;
188: }
189:
190: sub end_html {
191: my ($target,$token) = @_;
192: my $currentstring = '';
193: if ($target eq 'web') {
194: $currentstring = &Apache::lonxml::xmlend();
195: }
196: return $currentstring;
197: }
198:
199: #-- <head> tag (end tag optional)
200: sub start_head {
201: my ($target,$token) = @_;
202: my $currentstring = '';
203: if ($target eq 'web') {
204: $currentstring = $token->[4];
205: }
206: return $currentstring;
207: }
208:
209: sub end_head {
210: my ($target,$token) = @_;
211: my $currentstring = '';
212: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
213: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
214: $token->[2];
215: }
216: return $currentstring;
217: }
218:
219: #-- <map> tag (end tag required)
220: sub start_map {
221: my ($target,$token) = @_;
222: my $currentstring = '';
223: if ($target eq 'web') {
224: $currentstring = $token->[4];
225: }
226: return $currentstring;
227: }
228:
229: sub end_map {
230: my ($target,$token) = @_;
231: my $currentstring = '';
232: if ($target eq 'web') {
233: $currentstring = $token->[2];
234: }
235: return $currentstring;
236: }
237:
238: #-- <select> tag (end tag required)
239: sub start_select {
240: my ($target,$token) = @_;
241: my $currentstring = '';
242: if ($target eq 'web') {
243: $currentstring = $token->[4];
244: } elsif ($target eq 'tex') {
245: $Apache::londefdef::select=0;
246: }
247: return $currentstring;
248: }
249:
250: sub end_select {
251: my ($target,$token) = @_;
252: my $currentstring = '';
253: if ($target eq 'web') {
254: $currentstring = $token->[2];
255: }
256: return $currentstring;
257: }
258:
259: #-- <option> tag (end tag optional)
260: sub start_option {
261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
262: my $currentstring = '';
263: if ($target eq 'web') {
264: $currentstring = $token->[4];
265: } elsif ($target eq 'tex') {
266: $Apache::londefdef::select++;
267: if ($Apache::londefdef::select == 1) {
268: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
269: } else {
270: $currentstring='\keephidden{';
271: }
272: }
273: return $currentstring;
274: }
275:
276: sub end_option {
277: my ($target,$token) = @_;
278: my $currentstring = '';
279: if ($target eq 'web') {
280: $currentstring = $token->[2];
281: } elsif ($target eq 'tex') {
282: $currentstring='}';
283: }
284: return $currentstring;
285: }
286:
287: #-- <input> tag (end tag forbidden)
288: sub start_input {
289: my ($target,$token) = @_;
290: my $currentstring = '';
291: if ($target eq 'web') {
292: $currentstring = $token->[4];
293: }
294: return $currentstring;
295: }
296:
297: sub end_input {
298: my ($target,$token) = @_;
299: my $currentstring = '';
300: if ($target eq 'web') {
301: $currentstring = $token->[2];
302: }
303: return $currentstring;
304: }
305:
306: #-- <textarea> tag (end tag required)
307: sub start_textarea {
308: my ($target,$token) = @_;
309: my $currentstring = '';
310: if ($target eq 'web') {
311: $currentstring = $token->[4];
312: }
313: return $currentstring;
314: }
315:
316: sub end_textarea {
317: my ($target,$token) = @_;
318: my $currentstring = '';
319: if ($target eq 'web') {
320: $currentstring = $token->[2];
321: }
322: return $currentstring;
323: }
324:
325: #-- <form> tag (end tag required)
326: sub start_form {
327: my ($target,$token) = @_;
328: my $currentstring = '';
329: if ($target eq 'web') {
330: $currentstring = $token->[4];
331: }
332: return $currentstring;
333: }
334:
335: sub end_form {
336: my ($target,$token) = @_;
337: my $currentstring = '';
338: if ($target eq 'web') {
339: $currentstring = $token->[2];
340: }
341: return $currentstring;
342: }
343:
344: #-- <title> tag (end tag required)
345: sub start_title {
346: my ($target,$token) = @_;
347: my $currentstring = '';
348: if ($target eq 'web') {
349: $currentstring = $token->[4];
350: } elsif ($target eq 'tex') {
351: $currentstring .= '\keephidden{Title of the document: '
352: }
353: if ($target eq 'meta') {
354: $currentstring='<title>';
355: &start_output($target);
356: }
357: return $currentstring;
358: }
359:
360: sub end_title {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web') {
364: $currentstring = $token->[2];
365: } elsif ($target eq 'tex') {
366: $currentstring .= '}';
367: }
368: if ($target eq 'meta') {
369: &end_output($target);
370: $currentstring='</title>';
371: }
372: return $currentstring;
373: }
374:
375: #-- <meta> tag (end tag forbidden)
376: sub start_meta {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
378: my $currentstring = '';
379: if ($target eq 'web') {
380: my $args='';
381: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
382: if ($args eq '') {
383: &Apache::lonxml::get_all_text("/meta",$parser);
384: } else {
385: $currentstring = $token->[4];
386: }
387: } elsif ($target eq 'meta') {
388: unless (&Apache::lonxml::get_param
389: ('http-equiv',$parstack,$safeeval,undef,1)) {
390: my $name=$token->[2]->{'name'};
391: $name=~tr/A-Z/a-z/;
392: $name=~s/\s/\_/gs;
393: $name=~s/\W//gs;
394: if ($name) {
395: $currentstring='<'.$name;
396: my $display=&Apache::lonxml::get_param
397: ('display',$parstack,$safeeval,undef,1);
398: if ($display) {
399: $display=~s/\"/\'/g;
400: $currentstring.=' display="'.$display.'"';
401: }
402: $currentstring.='>'.
403: &Apache::lonxml::get_param
404: ('content',$parstack,$safeeval,undef,1).
405: '</'.$name.'>';
406: }
407: my $display=&Apache::lonxml::get_param
408: ('display',$parstack,$safeeval,undef,1);
409: if ($display) {
410: $display=&HTML::Entities::encode($display);
411: $currentstring.='<'.$name.'.display>'.$display.
412: '</'.$name.'.display>';
413: }
414: }
415: } elsif ($target eq 'tex') {
416: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
417: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
418: if ((not defined $content) && (not defined $name)) {
419: &Apache::lonxml::startredirection();
420: }
421: }
422: return $currentstring;
423: }
424:
425: sub end_meta {
426: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
427: my $currentstring = '';
428: if ($target eq 'web') {
429: my $args='';
430: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
431: if ($args ne '') {
432: $currentstring = $token->[4];
433: }
434: } elsif ($target eq 'tex') {
435: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
436: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
437: if ((not defined $content) && (not defined $name)) {
438: &Apache::lonxml::endredirection();
439: }
440: }
441: return $currentstring;
442: }
443:
444: # accessrule
445: sub start_accessrule {
446: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
447: my $currentstring = '';
448: my $eff=&Apache::lonxml::get_param
449: ('effect',$parstack,$safeeval,undef,1);
450: my $realm=&Apache::lonxml::get_param
451: ('realm',$parstack,$safeeval,undef,1);
452: my $role=&Apache::lonxml::get_param
453: ('role',$parstack,$safeeval,undef,1);
454: $realm=~s/\s+//g;
455: $realm=~s/\//\_/g;
456: $realm=~s/^\_//;
457: $realm=~s/\W/\;/g;
458: $role=~s/\s+//g;
459: $role=~s/\//\_/g;
460: $role=~s/\W/\;/g;
461: if ($target eq 'web') {
462: my $args='';
463: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
464: if ($args eq '') {
465: &Apache::lonxml::get_all_text("/accessrule",$parser);
466: } else {
467: $currentstring = $token->[4];
468: }
469: }
470: if ($target eq 'meta') {
471: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
472: }
473: return $currentstring;
474: }
475:
476: sub end_accessrule {
477: my ($target,$token,$tagstack,$parstack,$parser) = @_;
478: my $currentstring = '';
479: if ($target eq 'web') {
480: my $args='';
481: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
482: if ($args ne '') {
483: $currentstring = $token->[4];
484: }
485: }
486: return $currentstring;
487: }
488:
489: #-- <body> tag (end tag required)
490: sub start_body {
491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
492: my $currentstring = '';
493: if ($target eq 'web') {
494: if ($Apache::lonhomework::parsing_a_problem) {
495: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
496: return '';
497: }
498: if (!$Apache::lonxml::registered &&
499: $ENV{'request.state'} eq 'published') {
500: $currentstring.='<head>'.
501: &Apache::lonmenu::registerurl(undef,$target).'</head>';
502: }
503: # Accessibility
504: if ($ENV{'browser.imagesuppress'} eq 'on') {
505: delete($token->[2]->{'background'});
506: }
507: if ($ENV{'browser.fontenhance'} eq 'on') {
508: my $style='';
509: foreach my $key (keys(%{$token->[2]})) {
510: if ($key =~ /^style$/i) {
511: $style.=$token->[2]->{$key}.';';
512: delete($token->[2]->{$key});
513: }
514: }
515: $token->[2]->{'style'}=$style.'; font-size: x-large;';
516: }
517: if ($ENV{'browser.blackwhite'} eq 'on') {
518: delete($token->[2]->{'font'});
519: delete($token->[2]->{'link'});
520: delete($token->[2]->{'alink'});
521: delete($token->[2]->{'vlink'});
522: delete($token->[2]->{'bgcolor'});
523: delete($token->[2]->{'background'});
524: }
525: # Overload loads
526: my $onLoad='';
527: foreach my $key (keys(%{$token->[2]})) {
528: if ($key =~ /^onload$/i) {
529: $onLoad.=$token->[2]->{$key}.';';
530: delete($token->[2]->{$key});
531: }
532: }
533: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
534: my $onUnload='';
535: foreach my $key (keys(%{$token->[2]})) {
536: if ($key =~ /^onunload$/i) {
537: $onUnload.=$token->[2]->{$key}.';';
538: delete($token->[2]->{$key});
539: }
540: }
541: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
542: ';'.$onUnload;
543:
544: $currentstring .= '<'.$token->[1];
545: foreach (keys %{$token->[2]}) {
546: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
547: }
548: $currentstring.='>';
549: if ($ENV{'request.state'} ne 'published') {
550: $currentstring.=(<<EDITBUTTON);
551: <form method="post">
552: <input type="submit" name="editmode" value="Edit" />
553: </form>
554: EDITBUTTON
555: } else {
556: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
557: }
558: } elsif ($target eq 'tex') {
559: $currentstring = '\begin{document}';
560: }
561: return $currentstring;
562: }
563:
564: sub end_body {
565: my ($target,$token) = @_;
566: my $currentstring = '';
567: if ($target eq 'web') {
568: $currentstring = $token->[2];
569: } elsif ($target eq 'tex') {
570: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
571: }
572: return $currentstring;
573: }
574:
575: #-- <center> tag (end tag required)
576: sub start_center {
577: my ($target,$token) = @_;
578: my $currentstring = '';
579: if ($target eq 'web') {
580: $currentstring = $token->[4];
581: } elsif ($target eq 'tex') {
582: $currentstring = '\begin{center}';
583: }
584: return $currentstring;
585: }
586:
587: sub end_center {
588: my ($target,$token) = @_;
589: my $currentstring = '';
590: if ($target eq 'web') {
591: $currentstring = $token->[2];
592: } elsif ($target eq 'tex') {
593: $currentstring = '\end{center}';
594: }
595: return $currentstring;
596: }
597:
598: #-- <b> tag (end tag required)
599: sub start_b {
600: my ($target,$token) = @_;
601: my $currentstring = '';
602: if ($target eq 'web') {
603: $currentstring = $token->[4];
604: } elsif ($target eq 'tex') {
605: $currentstring = '\textbf{';
606: }
607: return $currentstring;
608: }
609:
610: sub end_b {
611: my ($target,$token) = @_;
612: my $currentstring = '';
613: if ($target eq 'web') {
614: $currentstring = $token->[2];
615: } elsif ($target eq 'tex') {
616: $currentstring = '}';
617: }
618: return $currentstring;
619: }
620:
621: #-- <strong> tag (end tag required)
622: sub start_strong {
623: my ($target,$token) = @_;
624: my $currentstring = '';
625: if ($target eq 'web') {
626: $currentstring = $token->[4];
627: } elsif ($target eq 'tex') {
628: $currentstring = '\textbf{';
629: }
630: return $currentstring;
631: }
632:
633: sub end_strong {
634: my ($target,$token) = @_;
635: my $currentstring = '';
636: if ($target eq 'web') {
637: $currentstring = $token->[2];
638: } elsif ($target eq 'tex') {
639: $currentstring = '}';
640: }
641: return $currentstring;
642: }
643:
644: #-- <h1> tag (end tag required)
645: sub start_h1 {
646: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
647: my $currentstring = '';
648: if ($target eq 'web') {
649: $currentstring .= $token->[4];
650: } elsif ($target eq 'tex') {
651: my $pre;
652: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
653: if (($align eq 'center') || (not defined $align)) {
654: $pre='\begin{center}';
655: } elsif ($align eq 'left') {
656: $pre='\rlap{';
657: } elsif ($align eq 'right') {
658: $pre=' \hfill \llap{';
659: }
660: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
661: if (not defined $TeXsize) {$TeXsize="large";}
662: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
663: } elsif ($target eq 'meta') {
664: $currentstring='<subject>';
665: &start_output($target);
666: }
667: return $currentstring;
668: }
669:
670: sub end_h1 {
671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
672: my $currentstring = '';
673: if ($target eq 'web') {
674: $currentstring .= $token->[2];
675: } elsif ($target eq 'tex') {
676: my $post;
677: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
678: if (($align eq 'center') || (not defined $align)) {
679: $post='\end{center}';
680: } elsif ($align eq 'left') {
681: $post='} \hfill'.'\vskip 0 mm ';
682: } elsif ($align eq 'right') {
683: $post='}'.'\vskip 0 mm ';
684: }
685: $currentstring .= '}}'.$post;
686: } elsif ($target eq 'meta') {
687: &end_output($target);
688: $currentstring='</subject>';
689: }
690: return $currentstring;
691: }
692:
693: #-- <h2> tag
694: sub start_h2 {
695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
696: my $currentstring = '';
697: if ($target eq 'web') {
698: $currentstring .= $token->[4];
699: } elsif ($target eq 'tex') {
700: my $pre;
701: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
702: if (($align eq 'center') || (not defined $align)) {
703: $pre='\begin{center}';
704: } elsif ($align eq 'left') {
705: $pre='\rlap{';
706: } elsif ($align eq 'right') {
707: $pre=' \hfill \llap{';
708: }
709: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
710: if (not defined $TeXsize) {$TeXsize="large";}
711: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
712: }
713: return $currentstring;
714: }
715:
716: sub end_h2 {
717: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
718: my $currentstring = '';
719: if ($target eq 'web') {
720: $currentstring .= $token->[2];
721: } elsif ($target eq 'tex') {
722: my $post;
723: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
724: if (($align eq 'center') || (not defined $align)) {
725: $post='\end{center}';
726: } elsif ($align eq 'left') {
727: $post='} \hfill'.'\vskip 0 mm ';
728: } elsif ($align eq 'right') {
729: $post='}'.'\vskip 0 mm ';
730: }
731: $currentstring .= '}}'.$post;
732: }
733: return $currentstring;
734: }
735:
736: #-- <h3> tag
737: sub start_h3 {
738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
739: my $currentstring = '';
740: if ($target eq 'web') {
741: $currentstring .= $token->[4];
742: } elsif ($target eq 'tex') {
743: my $pre;
744: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
745: if (($align eq 'center') || (not defined $align)) {
746: $pre='\begin{center}';
747: } elsif ($align eq 'left') {
748: $pre='\rlap{';
749: } elsif ($align eq 'right') {
750: $pre=' \hfill \llap{';
751: }
752: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
753: if (not defined $TeXsize) {$TeXsize="large";}
754: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
755: }
756: return $currentstring;
757: }
758:
759: sub end_h3 {
760: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
761: my $currentstring = '';
762: if ($target eq 'web') {
763: $currentstring .= $token->[2];
764: } elsif ($target eq 'tex') {
765: my $post;
766: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
767: if (($align eq 'center') || (not defined $align)) {
768: $post='\end{center}';
769: } elsif ($align eq 'left') {
770: $post='} \hfill'.'\vskip 0 mm ';
771: } elsif ($align eq 'right') {
772: $post='}'.'\vskip 0 mm ';
773: }
774: $currentstring .= '}}'.$post;
775: }
776: return $currentstring;
777: }
778:
779: #-- <h4> tag
780: sub start_h4 {
781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
782: my $currentstring = '';
783: if ($target eq 'web') {
784: $currentstring .= $token->[4];
785: } elsif ($target eq 'tex') {
786: my $pre;
787: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
788: if (($align eq 'center') || (not defined $align)) {
789: $pre='\begin{center}';
790: } elsif ($align eq 'left') {
791: $pre='\rlap{';
792: } elsif ($align eq 'right') {
793: $pre=' \hfill \llap{';
794: }
795: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
796: if (not defined $TeXsize) {$TeXsize="large";}
797: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
798: }
799: return $currentstring;
800: }
801:
802: sub end_h4 {
803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
804: my $currentstring = '';
805: if ($target eq 'web') {
806: $currentstring .= $token->[2];
807: } elsif ($target eq 'tex') {
808: my $post;
809: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
810: if (($align eq 'center') || (not defined $align)) {
811: $post='\end{center}';
812: } elsif ($align eq 'left') {
813: $post='} \hfill'.'\vskip 0 mm ';
814: } elsif ($align eq 'right') {
815: $post='}'.'\vskip 0 mm ';
816: }
817: $currentstring .= '}}'.$post;
818: }
819: return $currentstring;
820: }
821:
822: #-- <h5> tag
823: sub start_h5 {
824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
825: my $currentstring = '';
826: if ($target eq 'web') {
827: $currentstring .= $token->[4];
828: } elsif ($target eq 'tex') {
829: my $pre;
830: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
831: if (($align eq 'center') || (not defined $align)) {
832: $pre='\begin{center}';
833: } elsif ($align eq 'left') {
834: $pre='\rlap{';
835: } elsif ($align eq 'right') {
836: $pre=' \hfill \llap{';
837: }
838: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
839: if (not defined $TeXsize) {$TeXsize="large";}
840: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
841: }
842: return $currentstring;
843: }
844:
845: sub end_h5 {
846: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
847: my $currentstring = '';
848: if ($target eq 'web') {
849: $currentstring .= $token->[2];
850: } elsif ($target eq 'tex') {
851: my $post;
852: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
853: if (($align eq 'center') || (not defined $align)) {
854: $post='\end{center}';
855: } elsif ($align eq 'left') {
856: $post='} \hfill'.'\vskip 0 mm ';
857: } elsif ($align eq 'right') {
858: $post='}'.'\vskip 0 mm ';
859: }
860: $currentstring .= '}}'.$post;
861: }
862: return $currentstring;
863: }
864:
865: #-- <h6> tag
866: sub start_h6 {
867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
868: my $currentstring = '';
869: if ($target eq 'web') {
870: $currentstring .= $token->[4];
871: } elsif ($target eq 'tex') {
872: my $pre;
873: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
874: if (($align eq 'center') || (not defined $align)) {
875: $pre='\begin{center}';
876: } elsif ($align eq 'left') {
877: $pre='\rlap{';
878: } elsif ($align eq 'right') {
879: $pre=' \hfill \llap{';
880: }
881: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
882: if (not defined $TeXsize) {$TeXsize="large";}
883: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
884: }
885: return $currentstring;
886: }
887:
888: sub end_h6 {
889: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
890: my $currentstring = '';
891: if ($target eq 'web') {
892: $currentstring .= $token->[2];
893: } elsif ($target eq 'tex') {
894: my $post;
895: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
896: if (($align eq 'center') || (not defined $align)) {
897: $post='\end{center}';
898: } elsif ($align eq 'left') {
899: $post='} \hfill'.'\vskip 0 mm ';
900: } elsif ($align eq 'right') {
901: $post='}'.'\vskip 0 mm ';
902: }
903: $currentstring .= '}}'.$post;
904: }
905: return $currentstring;
906: }
907:
908: #--- <cite> tag (end tag required)
909: sub start_cite {
910: my ($target,$token) = @_;
911: my $currentstring = '';
912: if ($target eq 'web') {
913: $currentstring .= $token->[4];
914: } elsif ($target eq 'tex') {
915: $currentstring .= '\textit{';
916: }
917: return $currentstring;
918: }
919:
920: sub end_cite {
921: my ($target,$token) = @_;
922: my $currentstring = '';
923: if ($target eq 'web') {
924: $currentstring .= $token->[2];
925: } elsif ($target eq 'tex') {
926: $currentstring .= '}';
927: }
928: return $currentstring;
929: }
930:
931: #-- <i> tag (end tag required)
932: sub start_i {
933: my ($target,$token) = @_;
934: my $currentstring = '';
935: if ($target eq 'web') {
936: $currentstring .= $token->[4];
937: } elsif ($target eq 'tex') {
938: $currentstring .= '\textit{';
939: }
940: return $currentstring;
941: }
942:
943: sub end_i {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web') {
947: $currentstring .= $token->[2];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '}';
950: }
951: return $currentstring;
952: }
953:
954: #-- <address> tag (end tag required)
955: sub start_address {
956: my ($target,$token) = @_;
957: my $currentstring = '';
958: if ($target eq 'web') {
959: $currentstring .= $token->[4];
960: } elsif ($target eq 'tex') {
961: $currentstring .= '\textit{';
962: }
963: return $currentstring;
964: }
965:
966: sub end_address {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web') {
970: $currentstring .= $token->[2];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '}';
973: }
974: return $currentstring;
975: }
976:
977: #-- <dfn> tag (end tag required)
978: sub start_dfn {
979: my ($target,$token) = @_;
980: my $currentstring = '';
981: if ($target eq 'web') {
982: $currentstring .= $token->[4];
983: } elsif ($target eq 'tex') {
984: $currentstring .= '\textit{';
985: }
986: return $currentstring;
987: }
988:
989: sub end_dfn {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web') {
993: $currentstring .= $token->[2];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '}';
996: }
997: return $currentstring;
998: }
999:
1000: #-- <tt> tag (end tag required)
1001: sub start_tt {
1002: my ($target,$token) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web') {
1005: $currentstring .= $token->[4];
1006: } elsif ($target eq 'tex') {
1007: $currentstring .= '\texttt{';
1008: }
1009: return $currentstring;
1010: }
1011:
1012: sub end_tt {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web') {
1016: $currentstring .= $token->[2];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '}';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: #-- <kbd> tag (end tag required)
1024: sub start_kbd {
1025: my ($target,$token) = @_;
1026: my $currentstring = '';
1027: if ($target eq 'web') {
1028: $currentstring .= $token->[4];
1029: } elsif ($target eq 'tex') {
1030: $currentstring .= '\texttt{';
1031: }
1032: return $currentstring;
1033: }
1034:
1035: sub end_kbd {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web') {
1039: $currentstring .= $token->[2];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '}';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: #-- <code> tag (end tag required)
1047: sub start_code {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web') {
1051: $currentstring .= $token->[4];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '\texttt{';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: sub end_code {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web') {
1062: $currentstring .= $token->[2];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '}';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: #-- <em> tag (end tag required)
1070: sub start_em {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web') {
1074: $currentstring .= $token->[4];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '\emph{';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: sub end_em {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web') {
1085: $currentstring .= $token->[2];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '}';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: #-- <q> tag (end tag required)
1093: sub start_q {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web') {
1097: $currentstring .= $token->[4];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '\emph{';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: sub end_q {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web') {
1108: $currentstring .= $token->[2];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '}';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: #-- <p> tag (end tag optional)
1116: sub start_p {
1117: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1118: my $currentstring = '';
1119: if ($target eq 'web') {
1120: $currentstring .= $token->[4];
1121: } elsif ($target eq 'tex') {
1122: my $signal=1;
1123: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}
1124: if ($signal) {$currentstring .= '\par ';}
1125: }
1126: return $currentstring;
1127: }
1128:
1129: sub end_p {
1130: my ($target,$token) = @_;
1131: my $currentstring = '';
1132: if ($target eq 'web') {
1133: $currentstring .= $token->[2];
1134: }
1135: return $currentstring;
1136: }
1137:
1138: #-- <br> tag (end tag forbidden)
1139: sub start_br {
1140: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1141: my $currentstring = '';
1142: if ($target eq 'web') {
1143: $currentstring .= $token->[4];
1144: } elsif ($target eq 'tex') {
1145: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1146: $currentstring .= '\vskip 0.2 mm ';
1147: }
1148: }
1149: return $currentstring;
1150: }
1151:
1152: sub end_br {
1153: my ($target,$token) = @_;
1154: my $currentstring = '';
1155: if ($target eq 'web') {
1156: $currentstring .= $token->[2];
1157: }
1158: return $currentstring;
1159: }
1160:
1161: #-- <big> tag (end tag required)
1162: sub start_big {
1163: my ($target,$token) = @_;
1164: my $currentstring = '';
1165: if ($target eq 'web') {
1166: $currentstring .= $token->[4];
1167: } elsif ($target eq 'tex') {
1168: $currentstring .= '{\large ';
1169: }
1170: return $currentstring;
1171: }
1172:
1173: sub end_big {
1174: my ($target,$token) = @_;
1175: my $currentstring = '';
1176: if ($target eq 'web') {
1177: $currentstring .= $token->[2];
1178: } elsif ($target eq 'tex') {
1179: $currentstring .= '}';
1180: }
1181: return $currentstring;
1182: }
1183:
1184: #-- <small> tag (end tag required)
1185: sub start_small {
1186: my ($target,$token) = @_;
1187: my $currentstring = '';
1188: if ($target eq 'web') {
1189: $currentstring .= $token->[4];
1190: } elsif ($target eq 'tex') {
1191: $currentstring .= '{\footnotesize ';
1192: }
1193: return $currentstring;
1194: }
1195:
1196: sub end_small {
1197: my ($target,$token) = @_;
1198: my $currentstring = '';
1199: if ($target eq 'web') {
1200: $currentstring .= $token->[2];
1201: } elsif ($target eq 'tex') {
1202: $currentstring .= '}';
1203: }
1204: return $currentstring;
1205: }
1206:
1207: #-- <basefont> tag (end tag forbidden)
1208: sub start_basefont {
1209: my ($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: $currentstring = '{\\'.$basesize.' ';
1217: }
1218: }
1219: return $currentstring;
1220: }
1221:
1222: sub end_basefont {
1223: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web') {
1226: $currentstring = $token->[4];
1227: } elsif ($target eq 'tex') {
1228: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1229: if (defined $basesize) {
1230: $currentstring = '}';
1231: }
1232: }
1233: return $currentstring;
1234: }
1235:
1236: #-- <font> tag (end tag required)
1237: sub start_font {
1238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1239: my $currentstring = '';
1240: if ($target eq 'web') {
1241: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1242: if ($face=~/symbol/i) {
1243: $Apache::lonxml::prevent_entity_encode++;
1244: } else {
1245: if (($ENV{'browser.fontenhance'} eq 'on') ||
1246: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1247: }
1248: $currentstring = $token->[4];
1249: } elsif ($target eq 'tex') {
1250: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1251: if (defined $fontsize) {
1252: $currentstring = '{\\'.$fontsize.' ';
1253: }
1254: }
1255: return $currentstring;
1256: }
1257:
1258: sub end_font {
1259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1260: my $currentstring = '';
1261: if ($target eq 'web') {
1262: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1263: if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
1264: $currentstring = $token->[2];
1265: } elsif ($target eq 'tex') {
1266: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1267: if (defined $fontsize) {
1268: $currentstring = '}';
1269: }
1270: }
1271: return $currentstring;
1272: }
1273:
1274: #-- <strike> tag (end tag required)
1275: sub start_strike {
1276: my ($target,$token) = @_;
1277: my $currentstring = '';
1278: if ($target eq 'web') {
1279: $currentstring .= $token->[4];
1280: } elsif ($target eq 'tex') {
1281: &Apache::lonxml::startredirection();
1282: }
1283: return $currentstring;
1284: }
1285:
1286: sub end_strike {
1287: my ($target,$token) = @_;
1288: my $currentstring = '';
1289: if ($target eq 'web') {
1290: $currentstring .= $token->[2];
1291: } elsif ($target eq 'tex') {
1292: $currentstring=&Apache::lonxml::endredirection();
1293: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1294: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1295: $currentstring=~s/(\S)\s*$/$1\}/;
1296: }
1297: return $currentstring;
1298: }
1299:
1300: #-- <s> tag (end tag required)
1301: sub start_s {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web') {
1305: $currentstring .= $token->[4];
1306: } elsif ($target eq 'tex') {
1307: &Apache::lonxml::startredirection();
1308: }
1309: return $currentstring;
1310: }
1311:
1312: sub end_s {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web') {
1316: $currentstring .= $token->[2];
1317: } elsif ($target eq 'tex') {
1318: $currentstring=&Apache::lonxml::endredirection();
1319: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1320: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1321: $currentstring=~s/(\S)\s*$/$1\}/;
1322: }
1323: return $currentstring;
1324: }
1325:
1326: #-- <sub> tag (end tag required)
1327: sub start_sub {
1328: my ($target,$token) = @_;
1329: my $currentstring = '';
1330: if ($target eq 'web') {
1331: $currentstring .= $token->[4];
1332: } elsif ($target eq 'tex') {
1333: $currentstring .= "\$_{";
1334: }
1335: return $currentstring;
1336: }
1337:
1338: sub end_sub {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web') {
1342: $currentstring .= $token->[2];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= "}\$";
1345: }
1346: return $currentstring;
1347: }
1348:
1349: #-- <sup> tag (end tag required)
1350: sub start_sup {
1351: my ($target,$token) = @_;
1352: my $currentstring = '';
1353: if ($target eq 'web') {
1354: $currentstring .= $token->[4];
1355: } elsif ($target eq 'tex') {
1356: $currentstring .= "\$^{";
1357: }
1358: return $currentstring;
1359: }
1360:
1361: sub end_sup {
1362: my ($target,$token) = @_;
1363: my $currentstring = '';
1364: if ($target eq 'web') {
1365: $currentstring .= $token->[2];
1366: } elsif ($target eq 'tex') {
1367: $currentstring .= "}\$";
1368: }
1369: return $currentstring;
1370: }
1371:
1372: #-- <hr> tag (end tag forbidden)
1373: sub start_hr {
1374: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1375: my $currentstring = '';
1376: if ($target eq 'web') {
1377: $currentstring .= $token->[4];
1378: } elsif ($target eq 'tex') {
1379: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1380: if (defined $LaTeXwidth) {
1381: if ($LaTeXwidth=~/^%/) {
1382: substr($LaTeXwidth,0,1)='';
1383: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1384: }
1385: } else {
1386: $LaTeXwidth ='0.9\textwidth';
1387: }
1388: my ($pre,$post);
1389: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1390: if (($align eq 'center') || (not defined $align)) {
1391: $pre=''; $post='';
1392: } elsif ($align eq 'left') {
1393: $pre='\rlap{'; $post='} \hfill';
1394: } elsif ($align eq 'right') {
1395: $pre=' \hfill \llap{'; $post='}';
1396: }
1397: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1398: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1399: }
1400: return $currentstring;
1401: }
1402:
1403: sub end_hr {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web') {
1407: $currentstring .= $token->[2];
1408: }
1409: return $currentstring;
1410: }
1411:
1412: #-- <div> tag (end tag required)
1413: sub start_div {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web') {
1417: $currentstring .= $token->[4];
1418: }
1419: return $currentstring;
1420: }
1421:
1422: sub end_div {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web') {
1426: $currentstring .= $token->[2];
1427: }
1428: return $currentstring;
1429: }
1430:
1431: #-- <a> tag (end tag required)
1432: sub start_a {
1433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1434: my $currentstring = '';
1435: if ($target eq 'web') {
1436: $currentstring .= $token->[4];
1437: } elsif ($target eq 'tex') {
1438: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1439: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1440: if ($a=~/\S/) {
1441: $a=~s/([^\\])%/$1\\\%/g;
1442: $currentstring .= '\ref{URI: '.$a.'}';
1443: } elsif ($b=~/\S/) {
1444: $currentstring .= '\ref{Anchor: '.$b.'}';
1445: } else {
1446: $currentstring.='';
1447: }
1448: }
1449: return $currentstring;
1450: }
1451:
1452: sub end_a {
1453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web') {
1456: $currentstring .= $token->[2];
1457: }
1458: return $currentstring;
1459: }
1460:
1461: #-- <li> tag (end tag optional)
1462: sub start_li {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web') {
1466: $currentstring = $token->[4];
1467: } elsif ($target eq 'tex') {
1468: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1469: if ($type=~/circle/) {
1470: $currentstring .= ' \item[o] ';
1471: } elsif ($type=~/square/) {
1472: $currentstring .= ' \item[$\Box$] ';
1473: } elsif ($type ne '') {
1474: $currentstring .= ' \item['.$type.'] ';
1475: } else {
1476: $currentstring .= ' \item ';
1477: }
1478: }
1479: return $currentstring;
1480: }
1481:
1482: sub end_li {
1483: my ($target,$token) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web') {
1486: $currentstring = $token->[2];
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <u> tag (end tag required)
1492: sub start_u {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web') {
1496: $currentstring .= $token->[4];
1497: } elsif ($target eq 'tex') {
1498: &Apache::lonxml::startredirection();
1499: }
1500: return $currentstring;
1501: }
1502:
1503: sub end_u {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web') {
1507: $currentstring .= $token->[2];
1508: } elsif ($target eq 'tex') {
1509: $currentstring=&Apache::lonxml::endredirection();
1510: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1511: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1512: $currentstring=~s/(\S)\s*$/$1\}/;
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <ul> tag (end tag required)
1518: sub start_ul {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = '';
1521: if ($target eq 'web') {
1522: $currentstring = $token->[4];
1523: } elsif ($target eq 'tex') {
1524: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1525: if ($TeXtype eq 'disc') {
1526: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1527: \renewcommand{\labelitemii}{$\bullet$}
1528: \renewcommand{\labelitemiii}{$\bullet$}
1529: \renewcommand{\labelitemiv}{$\bullet$}';
1530: } elsif ($TeXtype eq 'circle') {
1531: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1532: \renewcommand{\labelitemii}{$\circ$}
1533: \renewcommand{\labelitemiii}{$\circ$}
1534: \renewcommand{\labelitemiv}{$\circ$}';
1535: } elsif ($TeXtype eq 'square') {
1536: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1537: \renewcommand{\labelitemii}{$\diamond$}
1538: \renewcommand{\labelitemiii}{$\diamond$}
1539: \renewcommand{\labelitemiv}{$\diamond$}';
1540: }
1541: $currentstring .= '\begin{itemize}';
1542: }
1543: return $currentstring;
1544: }
1545:
1546: sub end_ul {
1547: my ($target,$token) = @_;
1548: my $currentstring = '';
1549: if ($target eq 'web') {
1550: $currentstring = $token->[2];
1551: } elsif ($target eq 'tex') {
1552: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1553: \renewcommand{\labelitemii}{$\bullet$}
1554: \renewcommand{\labelitemiii}{$\bullet$}
1555: \renewcommand{\labelitemiv}{$\bullet$}';
1556: }
1557: return $currentstring;
1558: }
1559:
1560: #-- <menu> tag (end tag required)
1561: sub start_menu {
1562: my ($target,$token) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web') {
1565: $currentstring = $token->[4];
1566: } elsif ($target eq 'tex') {
1567: $currentstring = " \\begin{itemize} ";
1568: }
1569: return $currentstring;
1570: }
1571:
1572: sub end_menu {
1573: my ($target,$token) = @_;
1574: my $currentstring = '';
1575: if ($target eq 'web') {
1576: $currentstring = $token->[2];
1577: } elsif ($target eq 'tex') {
1578: $currentstring = " \\end{itemize}";
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <dir> tag (end tag required)
1584: sub start_dir {
1585: my ($target,$token) = @_;
1586: my $currentstring = '';
1587: if ($target eq 'web') {
1588: $currentstring = $token->[4];
1589: } elsif ($target eq 'tex') {
1590: $currentstring = " \\begin{itemize} ";
1591: }
1592: return $currentstring;
1593: }
1594:
1595: sub end_dir {
1596: my ($target,$token) = @_;
1597: my $currentstring = '';
1598: if ($target eq 'web') {
1599: $currentstring = $token->[2];
1600: } elsif ($target eq 'tex') {
1601: $currentstring = " \\end{itemize}";
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <ol> tag (end tag required)
1607: sub start_ol {
1608: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring = $token->[4];
1612: } elsif ($target eq 'tex') {
1613: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1614: if ($type eq '1') {
1615: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1616: \renewcommand{\labelenumii}{\arabic{enumii}.}
1617: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1618: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1619: } elsif ($type eq 'A') {
1620: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1621: \renewcommand{\labelenumii}{\Alph{enumii}.}
1622: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1623: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1624: } elsif ($type eq 'a') {
1625: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1626: \renewcommand{\labelenumii}{\alph{enumii}.}
1627: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1628: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1629: } elsif ($type eq 'i') {
1630: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1631: \renewcommand{\labelenumii}{\roman{enumii}.}
1632: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1633: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1634: } elsif ($type eq 'I') {
1635: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1636: \renewcommand{\labelenumii}{\Roman{enumii}.}
1637: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1638: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1639: }
1640: $currentstring .= '\begin{enumerate}';
1641: }
1642: return $currentstring;
1643: }
1644:
1645: sub end_ol {
1646: my ($target,$token) = @_;
1647: my $currentstring = '';
1648: if ($target eq 'web') {
1649: $currentstring = $token->[2];
1650: } elsif ($target eq 'tex') {
1651: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1652: \renewcommand{\labelenumii}{\arabic{enumii}.}
1653: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1654: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1655: }
1656: return $currentstring;
1657: }
1658:
1659: #-- <dl> tag (end tag required)
1660: sub start_dl {
1661: my ($target,$token) = @_;
1662: my $currentstring = '';
1663: if ($target eq 'web') {
1664: $currentstring = $token->[4];
1665: } elsif ($target eq 'tex') {
1666: $currentstring = '\begin{description}';
1667: @Apache::londefdef::description=();
1668: $Apache::londefdef::DD_redirection=0;
1669: $Apache::londefdef::DT_redirection=0;
1670: }
1671: return $currentstring;
1672: }
1673:
1674: sub end_dl {
1675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1676: my $currentstring = '';
1677: if ($target eq 'web') {
1678: $currentstring = $token->[2];
1679: } elsif ($target eq 'tex') {
1680: if ($Apache::londefdef::DT_redirection) {
1681: my $data=&item_cleanup;
1682: push @Apache::londefdef::description,'\item['.$data.']';
1683: $Apache::londefdef::DT_redirection=0;
1684: } elsif ($Apache::londefdef::DD_redirection) {
1685: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1686: }
1687: foreach my $element (@Apache::londefdef::description) {
1688: $currentstring.=' '.$element.' ';
1689: }
1690: @Apache::londefdef::description=();
1691: $currentstring.='\end{description}';
1692: }
1693: return $currentstring;
1694: }
1695:
1696: #-- <dt> tag (end tag optional)
1697: sub start_dt {
1698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1699: my $currentstring='';
1700: if ($target eq 'web') {
1701: $currentstring = $token->[4];
1702: } elsif ($target eq 'tex') {
1703: if ($Apache::londefdef::DT_redirection) {
1704: my $data=&item_cleanup;
1705: push @Apache::londefdef::description,'\item['.$data.']';
1706: $Apache::londefdef::DT_redirection=0;
1707: } elsif ($Apache::londefdef::DD_redirection) {
1708: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1709: $Apache::londefdef::DD_redirection=0;
1710: }
1711: &Apache::lonxml::startredirection();
1712: $Apache::londefdef::DT_redirection=1;
1713: }
1714: return $currentstring;
1715: }
1716:
1717: sub end_dt {
1718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web') {
1721: $currentstring = $token->[2];
1722: } elsif ($target eq 'tex') {
1723: my $data=&item_cleanup;
1724: push @Apache::londefdef::description,'\item['.$data.']';
1725: $Apache::londefdef::DT_redirection=0;
1726: }
1727: return $currentstring;
1728: }
1729:
1730: sub item_cleanup {
1731: my $item=&Apache::lonxml::endredirection();
1732: $item=~s/\\begin{center}//g;
1733: $item=~s/\\end{center}//g;
1734: return $item;
1735: }
1736:
1737: #-- <dd> tag (end tag optional)
1738: sub start_dd {
1739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1740: my $currentstring = '';
1741: if ($target eq 'web') {
1742: $currentstring = $token->[4];
1743: } elsif ($target eq 'tex') {
1744: if ($Apache::londefdef::DT_redirection) {
1745: my $data=&item_cleanup;
1746: push @Apache::londefdef::description,'\item['.$data.']';
1747: $Apache::londefdef::DT_redirection=0;
1748: }
1749: $Apache::londefdef::DD_redirection=1;
1750: &Apache::lonxml::startredirection();
1751: }
1752: return $currentstring;
1753: }
1754:
1755: sub end_dd {
1756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1757: my $currentstring = '';
1758: if ($target eq 'web') {
1759: $currentstring = $token->[2];
1760: } elsif ($target eq 'tex') {
1761: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1762: $Apache::londefdef::DD_redirection=0;
1763: }
1764: return $currentstring;
1765: }
1766:
1767: #-- <table> tag (end tag required)
1768: sub start_table {
1769: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1770: my $textwidth='';
1771: if (not defined @Apache::londefdef::table) {
1772: $textwidth=&recalc($ENV{'form.textwidth'});
1773: $textwidth=~/(\d+\.?\d*)/;
1774: $textwidth=0.95*$1;
1775: } else {
1776: $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1777: }
1778: my $currentstring = '';
1779: if ($target eq 'web') {
1780: $currentstring = $token->[4];
1781: } elsif ($target eq 'tex') {
1782: my $aa = {};
1783: push @Apache::londefdef::table, $aa;
1784: $Apache::londefdef::table[-1]{'row_number'} = -1;
1785: #table's width
1786: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1787: if (not defined $TeXwidth) {
1788: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1789: if ($htmlwidth=~/%/) {
1790: $htmlwidth=~/(\d+)/;
1791: my $value=$1*$textwidth/100;
1792: $Apache::londefdef::table[-1]{'width'}=$value;
1793: } else {
1794: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1795: }
1796: } elsif ($TeXwidth=~/%/) {
1797: $TeXwidth=~/(\d+)/;
1798: my $value=$1*$textwidth/100;
1799: $Apache::londefdef::table[-1]{'width'}=$value;
1800: } else {
1801: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1802: }
1803: #table's border
1804: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);
1805: unless (defined $border) { $border = 0; }
1806: if ($border) {
1807: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1808: $Apache::londefdef::table[-1]{'vinc'} = '&';
1809: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1810: } else {
1811: $Apache::londefdef::table[-1]{'hinc'} = '';
1812: $Apache::londefdef::table[-1]{'vinc'} = '&';
1813: $Apache::londefdef::table[-1]{'vvinc'} = '';
1814: }
1815: $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
1816: $currentstring = '\keephidden{NEW TABLE ENTRY}';
1817: }
1818: return $currentstring;
1819: }
1820:
1821: sub end_table {
1822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1823: my $currentstring = '';
1824: if ($target eq 'web') {
1825: $currentstring = $token->[2];
1826: } elsif ($target eq 'tex') {
1827: my $inmemory = '';
1828: my $output = '';
1829: #construct header of the table
1830: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1831: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
1832: $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
1833: }
1834: $header_of_table .= '}';
1835: #define the length of the table cells
1836: #always starts with TeXwidth (if defined everything else is ignored)
1837: my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
1838: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1839: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
1840: for (my $jn=0;$jn<=$#length_row;$jn++) {
1841: if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
1842: }
1843: }
1844: #continues trying estimate the width of raw data
1845: my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
1846: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1847: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
1848: for (my $jn=0;$jn<=$#length_row;$jn++) {
1849: if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
1850: }
1851: }
1852: #comparing of TeXwidth and raw data width
1853: my $available_length=$Apache::londefdef::table[-1]{'width'};
1854: my $needed=0;
1855: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1856: if ($length_row_final[$jn]!=0) {
1857: $available_length=$available_length-$length_row_final[$jn];
1858: $needed++;
1859: }
1860: }
1861: $needed=$#length_row_final-$needed+1;
1862: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1863: if ($length_row_final[$jn]==0) {
1864: if ($length_raw_row[$jn]<$available_length) {
1865: $length_row_final[$jn]=$length_raw_row[$jn];
1866: $available_length=$available_length-$length_raw_row[$jn];
1867: $needed--;
1868: }
1869: }
1870: }
1871: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1872: if ($length_row_final[$jn]==0) {
1873: $length_row_final[$jn]=0.9*$available_length/$needed;
1874: }
1875: }
1876: #fill the table
1877: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1878: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1879: my $substituted=$length_row_final[$jn];
1880: $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
1881: }
1882: $output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
1883: chop $output;
1884: $output .= ' \\\\ ';
1885: }
1886: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
1887: if ($#Apache::londefdef::table > 0) {
1888: my $inmemory = $Apache::londefdef::table[-1]{'output'};
1889: pop @Apache::londefdef::table;
1890: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
1891: } else {
1892: $currentstring .= $Apache::londefdef::table[-1]{'output'};
1893: pop @Apache::londefdef::table;
1894: undef @Apache::londefdef::table;
1895: }
1896: }
1897: return $currentstring;
1898: }
1899:
1900: #-- <tr> tag (end tag optional)
1901: sub start_tr {
1902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1903: my $currentstring = '';
1904: if ($target eq 'web') {
1905: $currentstring = $token->[4];
1906: } elsif ($target eq 'tex') {
1907: $Apache::londefdef::table[-1]{'row_number'}++;
1908: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1909: if ($alignchar ne '') {
1910: push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
1911: } else {
1912: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
1913: }
1914: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
1915: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
1916: $Apache::londefdef::table[-1]{'TeXlength'} = '';
1917: $Apache::londefdef::table[-1]{'length'} = '';
1918: }
1919: return $currentstring;
1920: }
1921:
1922: sub end_tr {
1923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1924: my $currentstring = '';
1925: if ($target eq 'web') {
1926: $currentstring = $token->[2];
1927: } elsif ($target eq 'tex') {
1928: if ($Apache::londefdef::TD_redirection) {
1929: &end_td_tex($parstack,$parser,$safeeval);
1930: }
1931: push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
1932: push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
1933: }
1934: return $currentstring;
1935: }
1936:
1937: #-- <td> tag (end tag optional)
1938: sub start_td {
1939: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1940: my $currentstring = '';
1941: if ($target eq 'web') {
1942: $currentstring = $token->[4];
1943: } elsif ($target eq 'tex') {
1944: $Apache::londefdef::TD_redirection = 1;
1945: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
1946: }
1947: return $currentstring;
1948: }
1949:
1950: sub tag_check {
1951: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
1952: my @ar=@$parstack;
1953: for (my $i=$#ar-1;$i>=0;$i--) {
1954: if (lc($$tagstack[$i]) eq $good_tag) {
1955: &start_td_tex($parstack,$parser,$safeeval);
1956: last;
1957: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
1958: splice @ar, $i+1;
1959: &end_td_tex(\@ar,$parser,$safeeval);
1960: &start_td_tex($parstack,$parser,$safeeval);
1961: last;
1962: }
1963: }
1964: return '';
1965: }
1966:
1967: sub start_td_tex {
1968: my ($parstack,$parser,$safeeval) = @_;
1969: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1970: if ($what_to_push eq '') {
1971: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
1972: }
1973: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
1974: $Apache::londefdef::table[-1]{'counter_columns'}++;
1975: &Apache::lonxml::startredirection();
1976: return '';
1977: }
1978:
1979: sub end_td_tex {
1980: my ($parstack,$parser,$safeeval) = @_;
1981: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
1982: my $data=&Apache::lonxml::endredirection();
1983: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1984: if (defined $TeXwidth) {
1985: my $current_length=&recalc($TeXwidth);
1986: $current_length=~/(\d+)/;
1987: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
1988: $Apache::londefdef::table[-1]{'length'} .= '0,';
1989: } else {
1990: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
1991: my $current_length=&recalc($1);
1992: $current_length=~/(\d+\.?\d*)/;
1993: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
1994: $Apache::londefdef::table[-1]{'length'} .= '0,';
1995: } else {
1996: $data=~s/^\s+(\S.*)/$1/;
1997: $data=~s/(.*\S)\s+$/$1/;
1998: $data=~s/(\s)+/$1/;
1999: my $current_length=0;
2000: if ($data=~/\\vskip/) {
2001: my $newdata=$data;
2002: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2003: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2004: foreach my $elementdata (@newdata) {
2005: my $lengthnewdata=1.8*LATEX_length($elementdata);
2006: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2007: }
2008: } else {
2009: $current_length=1.8*LATEX_length($data);
2010: }
2011: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2012: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2013: }
2014: }
2015: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2016: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2017: }
2018: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2019: return'';
2020: }
2021:
2022: sub end_td {
2023: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2024: my $currentstring = '';
2025: if ($target eq 'web') {
2026: $currentstring = $token->[2];
2027: } elsif ($target eq 'tex') {
2028: $Apache::londefdef::TD_redirection =0;
2029: &end_td_tex($parstack,$parser,$safeeval);
2030: }
2031: return $currentstring;
2032: }
2033:
2034: #-- <th> tag (end tag optional)
2035: sub start_th {
2036: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2037: my $currentstring = '';
2038: if ($target eq 'web') {
2039: $currentstring = $token->[4];
2040: } elsif ($target eq 'tex') {
2041: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2042: if ($what_to_push eq '') {
2043: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2044: }
2045: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2046: $Apache::londefdef::table[-1]{'counter_columns'}++;
2047: &Apache::lonxml::startredirection();
2048: }
2049: return $currentstring;
2050: }
2051:
2052: sub end_th {
2053: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2054: my $currentstring = '';
2055: if ($target eq 'web') {
2056: $currentstring = $token->[2];
2057: } elsif ($target eq 'tex') {
2058: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2059: my $data=&Apache::lonxml::endredirection();
2060: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2061: if (defined $TeXwidth) {
2062: my $current_length=&recalc($TeXwidth);
2063: $current_length=~/(\d+)/;
2064: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2065: $Apache::londefdef::table[-1]{'length'} .= '0,';
2066: } else {
2067: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2068: my $current_length=&recalc($1);
2069: $current_length=~/(\d+)/;
2070: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2071: $Apache::londefdef::table[-1]{'length'} .= '0,';
2072: } else {
2073: $data=~/^\s*(\S.*)/;
2074: $data=$1;
2075: $data=~/(.*\S)\s*$/;
2076: $data=$1;
2077: my $current_length=2*length($data);
2078: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2079: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2080: }
2081: }
2082: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2083: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2084: }
2085: $data='\textbf{'.$data.'}';
2086: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2087: }
2088: return $currentstring;
2089: }
2090: #-- <img> tag (end tag forbidden)
2091: sub start_img {
2092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2093: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2094: undef,1);
2095: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2096: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2097: &Apache::lonnet::logthis("inside was $inside");
2098: return '';
2099: }
2100: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2101: my $currentstring = '';
2102: my $width_param = '';
2103: my $height_param = '';
2104: my $scaling = .3;
2105: if ($target eq 'web') {
2106: if ($ENV{'browser.imagesuppress'} ne 'on') {
2107: $currentstring.= $token->[4];
2108: } else {
2109: my $alttag= &Apache::lonxml::get_param
2110: ('alt',$parstack,$safeeval,undef,1);
2111: unless ($alttag) {
2112: $alttag=&Apache::lonmeta::alttag
2113: ($Apache::lonxml::pwd[-1],$src);
2114: }
2115: $currentstring.='[IMAGE: '.$alttag.']';
2116: }
2117: } elsif ($target eq 'tex') {
2118: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2119: &image_replication($src);
2120: #if original gif/jpg/png file exist do following:
2121: if (-e $src) {
2122: #defines the default size of image
2123: my $image = Image::Magick->new;
2124: my $current_figure = $image->Read($src);
2125: $width_param = $image->Get('width') * $scaling;;
2126: $height_param = $image->Get('height') * $scaling;;
2127: undef $image;
2128: #do we have any specified size of the picture?
2129: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
2130: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
2131: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
2132: undef,1);
2133: if ($TeXwidth ne '') {
2134: if ($TeXwidth=~/(\d+)\s*\%/) {
2135: $width_param = $1*$ENV{'form.textwidth'}/100;
2136: } else {
2137: $width_param = $TeXwidth;
2138: }
2139: } elsif ($TeXheight ne '') {
2140: $width_param = $TeXheight/$height_param*$width_param;
2141: } elsif ($width ne '') {
2142: $width_param = $width*$scaling;
2143: }
2144: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
2145: my $file;
2146: my $path;
2147: if ($src =~ m!(.*)/([^/]*)$!) {
2148: $file = $2;
2149: $path = $1.'/';
2150: }
2151: my $newsrc = $src;
2152: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2153: $file=~s/\.(gif|jpg|png)$/.eps/i;
2154: #where can we find the picture?
2155: if (-e $newsrc) {
2156: #eps counterpart for image exist
2157: if ($path) {
2158: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2159: }
2160: } else {
2161: #there is no eps counterpart for image - check for ps one
2162: $newsrc =~ s/\.eps$/\.ps/;
2163: if (-e $newsrc) {
2164: #ps counterpart for image exist
2165: $file =~ s/\.eps$/\.ps/;
2166: if ($path) {
2167: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2168: }
2169: } else {
2170: #there aren't eps or ps - so create eps
2171: my $temp_file;
2172: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
2173: $temp_file = Apache::File->new('>>'.$filename);
2174: print $temp_file "$src\n";
2175: $newsrc=~s/\/home\/httpd\/html\/res//;
2176: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
2177: $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2178: }
2179: }
2180: } else {
2181: #original image file doesn't exist so check the alt attribute
2182: my $alt =
2183: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2184: unless ($alt) {
2185: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2186: }
2187:
2188: if ($alt) {
2189: $currentstring .= ' '.$alt.' ';
2190: } else {
2191: #<allow> tag will care about replication
2192: }
2193: }
2194: } elsif ($target eq 'edit') {
2195: $currentstring .=&Apache::edit::tag_start($target,$token);
2196: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2197: &Apache::edit::browse('src',undef,'alt').' '.
2198: &Apache::edit::search('src',undef,'alt').'<br />';
2199: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2200: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2201: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2202: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2203: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2204: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2205: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2206: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2207: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2208: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2209: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2210: if ($width) { $currentstring.=' width="'.$width.'" '; }
2211: if ($height) { $currentstring.=' height="'.$height.'" '; }
2212: $currentstring .= ' />';
2213: } elsif ($target eq 'modified') {
2214: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2215: $safeeval,'src','alt',
2216: 'TeXwidth','TeXheight',
2217: 'width','height');
2218: $src=$token->[2]{'src'};
2219: if (!$token->[2]{'width'} && !$token->[2]{'height'}) {
2220: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2221: &image_replication($src);
2222: if (-e $src) {
2223: my $image = Image::Magick->new;
2224: my ($width, $height, $size, $format) = $image->Ping($src);
2225: if ($width && $height) {
2226: $token->[2]{'width'} =$width;
2227: $token->[2]{'height'}=$height;
2228: $constructtag=1;
2229: }
2230: }
2231: }
2232: if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2233: }
2234: return $currentstring;
2235: }
2236:
2237: sub end_img {
2238: my ($target,$token) = @_;
2239: my $currentstring = '';
2240: if ($target eq 'web') {
2241: $currentstring = $token->[2];
2242: } elsif ($target eq 'tex') {
2243: $currentstring = '';
2244: }
2245: return $currentstring;
2246: }
2247:
2248: #-- <applet> tag (end tag required)
2249: sub start_applet {
2250: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2251:
2252: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2253: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2254:
2255: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2256: undef,1);
2257: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2258:
2259: my $currentstring = '';
2260: if ($target eq 'web') {
2261: if ($ENV{'browser.appletsuppress'} ne 'on') {
2262: $currentstring = $token->[4];
2263: } else {
2264: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2265: $safeeval,undef,1);
2266: unless ($alttag) {
2267: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2268: $code);
2269: }
2270: $currentstring='[APPLET: '.$alttag.']';
2271: }
2272: } elsif ($target eq 'tex') {
2273: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2274: $safeeval,undef,1);
2275: unless ($alttag) {
2276: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2277: undef,1);
2278: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2279: $code);
2280: }
2281: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2282: '.}\end{center}';
2283: }
2284: return $currentstring;
2285: }
2286:
2287: sub end_applet {
2288: my ($target,$token) = @_;
2289: my $currentstring = '';
2290: if ($target eq 'web') {
2291: $currentstring = $token->[2];
2292: } elsif ($target eq 'tex') {
2293: }
2294: return $currentstring;
2295: }
2296:
2297: #-- <embed> tag (end tag optional/required)
2298: sub start_embed {
2299: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2300: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2301: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2302: my $currentstring = '';
2303: if ($target eq 'web') {
2304: if ($ENV{'browser.embedsuppress'} ne 'on') {
2305: $currentstring = $token->[4];
2306: } else {
2307: my $alttag=&Apache::lonxml::get_param
2308: ('alt',$parstack,$safeeval,undef,1);
2309: unless ($alttag) {
2310: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2311: }
2312: $currentstring='[EMBED: '.$alttag.']';
2313: }
2314: } elsif ($target eq 'tex') {
2315: }
2316: return $currentstring;
2317: }
2318:
2319: sub end_embed {
2320: my ($target,$token) = @_;
2321: my $currentstring = '';
2322: if ($target eq 'web') {
2323: $currentstring = $token->[2];
2324: } elsif ($target eq 'tex') {
2325: }
2326: return $currentstring;
2327: }
2328:
2329: #-- <param> tag (end tag forbidden)
2330: sub start_param {
2331: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2332: if (&Apache::lonxml::get_param
2333: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2334: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2335: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2336: }
2337: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2338: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2339: my $currentstring = '';
2340: if ($target eq 'web') {
2341: $currentstring = $token->[4];
2342: } elsif ($target eq 'tex') {
2343: }
2344: return $currentstring;
2345: }
2346:
2347: sub end_param {
2348: my ($target,$token) = @_;
2349: my $currentstring = '';
2350: if ($target eq 'web') {
2351: $currentstring = $token->[2];
2352: } elsif ($target eq 'tex') {
2353: }
2354: return $currentstring;
2355: }
2356:
2357: #-- <allow> tag
2358: sub start_allow {
2359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2360: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2361: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2362: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2363: &Apache::lonnet::clutter($src);
2364: &image_replication($src);
2365: my $result;
2366: if ($target eq 'edit') {
2367: $result .=&Apache::edit::tag_start($target,$token);
2368: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2369: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2370: } elsif ($target eq 'modified') {
2371: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2372: $safeeval,'src');
2373: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2374: }
2375: return $result;
2376: }
2377:
2378: sub end_allow {
2379: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2380: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2381: return '';
2382: }
2383:
2384: #-- Frames (end tag required)
2385: #-- <frameset>
2386: sub start_frameset {
2387: my ($target,$token) = @_;
2388: my $currentstring = '';
2389: if ($target eq 'web') {
2390: if (!$Apache::lonxml::registered &&
2391: $ENV{'request.state'} eq 'published') {
2392: $currentstring.='<head>'.
2393: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2394: }
2395: my $onLoad='';
2396: foreach my $key (keys(%{$token->[2]})) {
2397: if ($key =~ /^onload$/i) {
2398: $onLoad.=$token->[2]->{$key}.';';
2399: delete($token->[2]->{$key});
2400: }
2401: }
2402: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2403: my $onUnload='';
2404: foreach my $key (keys(%{$token->[2]})) {
2405: if ($key =~ /^onunload$/i) {
2406: $onUnload.=$token->[2]->{$key}.';';
2407: delete($token->[2]->{$key});
2408: }
2409: }
2410: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2411: ';'.$onUnload;
2412:
2413: $currentstring .= '<'.$token->[1];
2414: foreach (keys %{$token->[2]}) {
2415: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2416: }
2417: $currentstring.='>';
2418: }
2419: return $currentstring;
2420: }
2421:
2422: sub end_frameset {
2423: my ($target,$token) = @_;
2424: my $currentstring = '';
2425: if ($target eq 'web') {
2426: $currentstring = $token->[2];
2427: }
2428: return $currentstring;
2429: }
2430:
2431: #-- <xmp> (end tag required)
2432: sub start_xmp {
2433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2434: my $currentstring = '';
2435: if ($target eq 'web') {
2436: $currentstring .= $token->[4];
2437: } elsif ($target eq 'tex') {
2438: $currentstring .= '\begin{verbatim}';
2439: }
2440: return $currentstring;
2441: }
2442:
2443: sub end_xmp {
2444: my ($target,$token) = @_;
2445: my $currentstring = '';
2446: if ($target eq 'web') {
2447: $currentstring .= $token->[2];
2448: } elsif ($target eq 'tex') {
2449: $currentstring .= '\end{verbatim}';
2450: }
2451: return $currentstring;
2452: }
2453:
2454: #-- <pre> (end tag required)
2455: sub start_pre {
2456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2457: my $currentstring = '';
2458: if ($target eq 'web') {
2459: $currentstring .= $token->[4];
2460: } elsif ($target eq 'tex') {
2461: $currentstring .= '\begin{verbatim}';
2462: }
2463: return $currentstring;
2464: }
2465:
2466: sub end_pre {
2467: my ($target,$token) = @_;
2468: my $currentstring = '';
2469: if ($target eq 'web') {
2470: $currentstring .= $token->[2];
2471: } elsif ($target eq 'tex') {
2472: $currentstring .= '\end{verbatim}';
2473: }
2474: return $currentstring;
2475: }
2476:
2477: #-- <insert>
2478: sub start_insert {
2479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2480: my $currentstring = '';
2481: if ($target eq 'web') {
2482: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2483: $currentstring .= '<b>'.$display.'</b>';;
2484: }
2485: return $currentstring;
2486: }
2487:
2488: sub end_insert {
2489: my ($target,$token) = @_;
2490: my $currentstring = '';
2491: if ($target eq 'web') {
2492: $currentstring .= '';
2493: }
2494: return $currentstring;
2495: }
2496:
2497: #-- <externallink>
2498: sub start_externallink {
2499: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2500: my $currentstring = '';
2501: if ($target eq 'web') {
2502: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2503: $currentstring .= '<b>'.$display.'</b>';;
2504: }
2505: return $currentstring;
2506: }
2507:
2508: sub end_externallink {
2509: my ($target,$token) = @_;
2510: my $currentstring = '';
2511: if ($target eq 'web') {
2512: $currentstring .= '';
2513: }
2514: return $currentstring;
2515: }
2516:
2517: #-- <blankspace heigth="">
2518: sub start_blankspace {
2519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2520: my $currentstring = '';
2521: if ($target eq 'tex') {
2522: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2523: $currentstring .= '\vskip '.$howmuch.' ';
2524: }
2525: return $currentstring;
2526: }
2527:
2528: sub end_blankspace {
2529: my ($target,$token) = @_;
2530: my $currentstring = '';
2531: if ($target eq 'tex') {
2532: $currentstring .= '';
2533: }
2534: return $currentstring;
2535: }
2536:
2537: #-- <abbr> tag (end tag required)
2538: sub start_abbr {
2539: my ($target,$token) = @_;
2540: my $currentstring = '';
2541: if ($target eq 'web') {
2542: $currentstring = $token->[4];
2543: }
2544: return $currentstring;
2545: }
2546:
2547: sub end_abbr {
2548: my ($target,$token) = @_;
2549: my $currentstring = '';
2550: if ($target eq 'web') {
2551: $currentstring = $token->[2];
2552: }
2553: return $currentstring;
2554: }
2555:
2556: #-- <acronym> tag (end tag required)
2557: sub start_acronym {
2558: my ($target,$token) = @_;
2559: my $currentstring = '';
2560: if ($target eq 'web') {
2561: $currentstring = $token->[4];
2562: }
2563: return $currentstring;
2564: }
2565:
2566: sub end_acronym {
2567: my ($target,$token) = @_;
2568: my $currentstring = '';
2569: if ($target eq 'web') {
2570: $currentstring = $token->[2];
2571: }
2572: return $currentstring;
2573: }
2574:
2575: #-- <area> tag (end tag forbidden)
2576: sub start_area {
2577: my ($target,$token) = @_;
2578: my $currentstring = '';
2579: if ($target eq 'web') {
2580: $currentstring = $token->[4];
2581: }
2582: return $currentstring;
2583: }
2584:
2585: sub end_area {
2586: my ($target,$token) = @_;
2587: my $currentstring = '';
2588: if ($target eq 'web') {
2589: $currentstring = $token->[2];
2590: }
2591: return $currentstring;
2592: }
2593:
2594: #-- <base> tag (end tag forbidden)
2595: sub start_base {
2596: my ($target,$token) = @_;
2597: my $currentstring = '';
2598: if ($target eq 'web') {
2599: $currentstring = $token->[4];
2600: }
2601: return $currentstring;
2602: }
2603:
2604: sub end_base {
2605: my ($target,$token) = @_;
2606: my $currentstring = '';
2607: if ($target eq 'web') {
2608: $currentstring = $token->[2];
2609: }
2610: return $currentstring;
2611: }
2612:
2613: #-- <bdo> tag (end tag required)
2614: sub start_bdo {
2615: my ($target,$token) = @_;
2616: my $currentstring = '';
2617: if ($target eq 'web') {
2618: $currentstring = $token->[4];
2619: }
2620: return $currentstring;
2621: }
2622:
2623: sub end_bdo {
2624: my ($target,$token) = @_;
2625: my $currentstring = '';
2626: if ($target eq 'web') {
2627: $currentstring = $token->[2];
2628: }
2629: return $currentstring;
2630: }
2631:
2632: #-- <bgsound> tag (end tag optional)
2633: sub start_bgsound {
2634: my ($target,$token) = @_;
2635: my $currentstring = '';
2636: if ($target eq 'web') {
2637: $currentstring = $token->[4];
2638: }
2639: return $currentstring;
2640: }
2641:
2642: sub end_bgsound {
2643: my ($target,$token) = @_;
2644: my $currentstring = '';
2645: if ($target eq 'web') {
2646: $currentstring = $token->[2];
2647: }
2648: return $currentstring;
2649: }
2650:
2651: #-- <blink> tag (end tag required)
2652: sub start_blink {
2653: my ($target,$token) = @_;
2654: my $currentstring = '';
2655: if ($target eq 'web') {
2656: $currentstring = $token->[4];
2657: }
2658: return $currentstring;
2659: }
2660:
2661: sub end_blink {
2662: my ($target,$token) = @_;
2663: my $currentstring = '';
2664: if ($target eq 'web') {
2665: $currentstring = $token->[2];
2666: }
2667: return $currentstring;
2668: }
2669:
2670: #-- <blockquote> tag (end tag required)
2671: sub start_blockquote {
2672: my ($target,$token) = @_;
2673: my $currentstring = '';
2674: if ($target eq 'web') {
2675: $currentstring = $token->[4];
2676: }
2677: return $currentstring;
2678: }
2679:
2680: sub end_blockquote {
2681: my ($target,$token) = @_;
2682: my $currentstring = '';
2683: if ($target eq 'web') {
2684: $currentstring = $token->[2];
2685: }
2686: return $currentstring;
2687: }
2688:
2689: #-- <button> tag (end tag required)
2690: sub start_button {
2691: my ($target,$token) = @_;
2692: my $currentstring = '';
2693: if ($target eq 'web') {
2694: $currentstring = $token->[4];
2695: }
2696: return $currentstring;
2697: }
2698:
2699: sub end_button {
2700: my ($target,$token) = @_;
2701: my $currentstring = '';
2702: if ($target eq 'web') {
2703: $currentstring = $token->[2];
2704: }
2705: return $currentstring;
2706: }
2707:
2708: #-- <caption> tag (end tag required)
2709: sub start_caption {
2710: my ($target,$token) = @_;
2711: my $currentstring = '';
2712: if ($target eq 'web') {
2713: $currentstring = $token->[4];
2714: }
2715: return $currentstring;
2716: }
2717:
2718: sub end_caption {
2719: my ($target,$token) = @_;
2720: my $currentstring = '';
2721: if ($target eq 'web') {
2722: $currentstring = $token->[2];
2723: }
2724: return $currentstring;
2725: }
2726:
2727: #-- <col> tag (end tag forbdden)
2728: sub start_col {
2729: my ($target,$token) = @_;
2730: my $currentstring = '';
2731: if ($target eq 'web') {
2732: $currentstring = $token->[4];
2733: }
2734: return $currentstring;
2735: }
2736:
2737: sub end_col {
2738: my ($target,$token) = @_;
2739: my $currentstring = '';
2740: if ($target eq 'web') {
2741: $currentstring = $token->[2];
2742: }
2743: return $currentstring;
2744: }
2745:
2746: #-- <colgroup> tag (end tag optional)
2747: sub start_colgroup {
2748: my ($target,$token) = @_;
2749: my $currentstring = '';
2750: if ($target eq 'web') {
2751: $currentstring = $token->[4];
2752: }
2753: return $currentstring;
2754: }
2755:
2756: sub end_colgroup {
2757: my ($target,$token) = @_;
2758: my $currentstring = '';
2759: if ($target eq 'web') {
2760: $currentstring = $token->[2];
2761: }
2762: return $currentstring;
2763: }
2764:
2765: #-- <del> tag (end tag required)
2766: sub start_del {
2767: my ($target,$token) = @_;
2768: my $currentstring = '';
2769: if ($target eq 'web') {
2770: $currentstring = $token->[4];
2771: }
2772: return $currentstring;
2773: }
2774:
2775: sub end_del {
2776: my ($target,$token) = @_;
2777: my $currentstring = '';
2778: if ($target eq 'web') {
2779: $currentstring = $token->[2];
2780: }
2781: return $currentstring;
2782: }
2783:
2784: #-- <fieldset> tag (end tag required)
2785: sub start_fieldset {
2786: my ($target,$token) = @_;
2787: my $currentstring = '';
2788: if ($target eq 'web') {
2789: $currentstring = $token->[4];
2790: }
2791: return $currentstring;
2792: }
2793:
2794: sub end_fieldset {
2795: my ($target,$token) = @_;
2796: my $currentstring = '';
2797: if ($target eq 'web') {
2798: $currentstring = $token->[2];
2799: }
2800: return $currentstring;
2801: }
2802:
2803: #-- <frame> tag (end tag forbidden)
2804: sub start_frame {
2805: my ($target,$token) = @_;
2806: my $currentstring = '';
2807: if ($target eq 'web') {
2808: $currentstring = $token->[4];
2809: }
2810: return $currentstring;
2811: }
2812:
2813: sub end_frame {
2814: my ($target,$token) = @_;
2815: my $currentstring = '';
2816: if ($target eq 'web') {
2817: $currentstring = $token->[2];
2818: }
2819: return $currentstring;
2820: }
2821:
2822: #-- <iframe> tag (end tag required)
2823: sub start_iframe {
2824: my ($target,$token) = @_;
2825: my $currentstring = '';
2826: if ($target eq 'web') {
2827: $currentstring = $token->[4];
2828: }
2829: return $currentstring;
2830: }
2831:
2832: sub end_iframe {
2833: my ($target,$token) = @_;
2834: my $currentstring = '';
2835: if ($target eq 'web') {
2836: $currentstring = $token->[2];
2837: }
2838: return $currentstring;
2839: }
2840:
2841: #-- <ins> tag (end tag required)
2842: sub start_ins {
2843: my ($target,$token) = @_;
2844: my $currentstring = '';
2845: if ($target eq 'web') {
2846: $currentstring = $token->[4];
2847: }
2848: return $currentstring;
2849: }
2850:
2851: sub end_ins {
2852: my ($target,$token) = @_;
2853: my $currentstring = '';
2854: if ($target eq 'web') {
2855: $currentstring = $token->[2];
2856: }
2857: return $currentstring;
2858: }
2859:
2860: #-- <isindex> tag (end tag forbidden)
2861: sub start_isindex {
2862: my ($target,$token) = @_;
2863: my $currentstring = '';
2864: if ($target eq 'web') {
2865: $currentstring = $token->[4];
2866: }
2867: return $currentstring;
2868: }
2869:
2870: sub end_isindex {
2871: my ($target,$token) = @_;
2872: my $currentstring = '';
2873: if ($target eq 'web') {
2874: $currentstring = $token->[2];
2875: }
2876: return $currentstring;
2877: }
2878:
2879: #-- <keygen> tag (end tag forbidden)
2880: sub start_keygen {
2881: my ($target,$token) = @_;
2882: my $currentstring = '';
2883: if ($target eq 'web') {
2884: $currentstring = $token->[4];
2885: }
2886: return $currentstring;
2887: }
2888:
2889: sub end_keygen {
2890: my ($target,$token) = @_;
2891: my $currentstring = '';
2892: if ($target eq 'web') {
2893: $currentstring = $token->[2];
2894: }
2895: return $currentstring;
2896: }
2897:
2898: #-- <label> tag
2899: sub start_label {
2900: my ($target,$token) = @_;
2901: my $currentstring = '';
2902: if ($target eq 'web') {
2903: $currentstring = $token->[4];
2904: }
2905: return $currentstring;
2906: }
2907:
2908: sub end_label {
2909: my ($target,$token) = @_;
2910: my $currentstring = '';
2911: if ($target eq 'web') {
2912: $currentstring = $token->[2];
2913: }
2914: return $currentstring;
2915: }
2916:
2917: #-- <layer> tag (end tag required)
2918: sub start_layer {
2919: my ($target,$token) = @_;
2920: my $currentstring = '';
2921: if ($target eq 'web') {
2922: $currentstring = $token->[4];
2923: }
2924: return $currentstring;
2925: }
2926:
2927: sub end_layer {
2928: my ($target,$token) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'web') {
2931: $currentstring = $token->[2];
2932: }
2933: return $currentstring;
2934: }
2935:
2936: #-- <legend> tag (end tag required)
2937: sub start_legend {
2938: my ($target,$token) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'web') {
2941: $currentstring = $token->[4];
2942: }
2943: return $currentstring;
2944: }
2945:
2946: sub end_legend {
2947: my ($target,$token) = @_;
2948: my $currentstring = '';
2949: if ($target eq 'web') {
2950: $currentstring = $token->[2];
2951: }
2952: return $currentstring;
2953: }
2954:
2955: #-- <link> tag (end tag forbidden)
2956: sub start_link {
2957: my ($target,$token) = @_;
2958: my $currentstring = '';
2959: if ($target eq 'web') {
2960: $currentstring = $token->[4];
2961: }
2962: return $currentstring;
2963: }
2964:
2965: sub end_link {
2966: my ($target,$token) = @_;
2967: my $currentstring = '';
2968: if ($target eq 'web') {
2969: $currentstring = $token->[2];
2970: }
2971: return $currentstring;
2972: }
2973:
2974: #-- <marquee> tag (end tag optional)
2975: sub start_marquee {
2976: my ($target,$token) = @_;
2977: my $currentstring = '';
2978: if ($target eq 'web') {
2979: $currentstring = $token->[4];
2980: }
2981: return $currentstring;
2982: }
2983:
2984: sub end_marquee {
2985: my ($target,$token) = @_;
2986: my $currentstring = '';
2987: if ($target eq 'web') {
2988: $currentstring = $token->[2];
2989: }
2990: return $currentstring;
2991: }
2992:
2993: #-- <multicol> tag (end tag required)
2994: sub start_multicol {
2995: my ($target,$token) = @_;
2996: my $currentstring = '';
2997: if ($target eq 'web') {
2998: $currentstring = $token->[4];
2999: }
3000: return $currentstring;
3001: }
3002:
3003: sub end_multicol {
3004: my ($target,$token) = @_;
3005: my $currentstring = '';
3006: if ($target eq 'web') {
3007: $currentstring = $token->[2];
3008: }
3009: return $currentstring;
3010: }
3011:
3012: #-- <nobr> tag (end tag required)
3013: sub start_nobr {
3014: my ($target,$token) = @_;
3015: my $currentstring = '';
3016: if ($target eq 'web') {
3017: $currentstring = $token->[4];
3018: } elsif ($target eq 'tex') {
3019: $currentstring='\mbox{';
3020: }
3021: return $currentstring;
3022: }
3023:
3024: sub end_nobr {
3025: my ($target,$token) = @_;
3026: my $currentstring = '';
3027: if ($target eq 'web') {
3028: $currentstring = $token->[2];
3029: } elsif ($target eq 'tex') {
3030: $currentstring='}';
3031: }
3032: return $currentstring;
3033: }
3034:
3035: #-- <noembed> tag (end tag required)
3036: sub start_noembed {
3037: my ($target,$token) = @_;
3038: my $currentstring = '';
3039: if ($target eq 'web') {
3040: $currentstring = $token->[4];
3041: }
3042: return $currentstring;
3043: }
3044:
3045: sub end_noembed {
3046: my ($target,$token) = @_;
3047: my $currentstring = '';
3048: if ($target eq 'web') {
3049: $currentstring = $token->[2];
3050: }
3051: return $currentstring;
3052: }
3053:
3054: #-- <noframes> tag (end tag required)
3055: sub start_noframes {
3056: my ($target,$token) = @_;
3057: my $currentstring = '';
3058: if ($target eq 'web') {
3059: $currentstring = $token->[4];
3060: }
3061: return $currentstring;
3062: }
3063:
3064: sub end_noframes {
3065: my ($target,$token) = @_;
3066: my $currentstring = '';
3067: if ($target eq 'web') {
3068: $currentstring = $token->[2];
3069: }
3070: return $currentstring;
3071: }
3072:
3073: #-- <nolayer> tag (end tag required)
3074: sub start_nolayer {
3075: my ($target,$token) = @_;
3076: my $currentstring = '';
3077: if ($target eq 'web') {
3078: $currentstring = $token->[4];
3079: }
3080: return $currentstring;
3081: }
3082:
3083: sub end_nolayer {
3084: my ($target,$token) = @_;
3085: my $currentstring = '';
3086: if ($target eq 'web') {
3087: $currentstring = $token->[2];
3088: }
3089: return $currentstring;
3090: }
3091:
3092: #-- <noscript> tag (end tag required)
3093: sub start_noscript {
3094: my ($target,$token) = @_;
3095: my $currentstring = '';
3096: if ($target eq 'web') {
3097: $currentstring = $token->[4];
3098: }
3099: return $currentstring;
3100: }
3101:
3102: sub end_noscript {
3103: my ($target,$token) = @_;
3104: my $currentstring = '';
3105: if ($target eq 'web') {
3106: $currentstring = $token->[2];
3107: }
3108: return $currentstring;
3109: }
3110:
3111: #-- <object> tag (end tag required)
3112: sub start_object {
3113: my ($target,$token) = @_;
3114: my $currentstring = '';
3115: if ($target eq 'web') {
3116: $currentstring = $token->[4];
3117: }
3118: return $currentstring;
3119: }
3120:
3121: sub end_object {
3122: my ($target,$token) = @_;
3123: my $currentstring = '';
3124: if ($target eq 'web') {
3125: $currentstring = $token->[2];
3126: }
3127: return $currentstring;
3128: }
3129:
3130: #-- <optgroup> tag (end tag required)
3131: sub start_optgroup {
3132: my ($target,$token) = @_;
3133: my $currentstring = '';
3134: if ($target eq 'web') {
3135: $currentstring = $token->[4];
3136: }
3137: return $currentstring;
3138: }
3139:
3140: sub end_optgroup {
3141: my ($target,$token) = @_;
3142: my $currentstring = '';
3143: if ($target eq 'web') {
3144: $currentstring = $token->[2];
3145: }
3146: return $currentstring;
3147: }
3148:
3149: #-- <samp> tag (end tag required)
3150: sub start_samp {
3151: my ($target,$token) = @_;
3152: my $currentstring = '';
3153: if ($target eq 'web') {
3154: $currentstring = $token->[4];
3155: } elsif ($target eq 'tex') {
3156: $currentstring='\texttt{';
3157: }
3158: return $currentstring;
3159: }
3160:
3161: sub end_samp {
3162: my ($target,$token) = @_;
3163: my $currentstring = '';
3164: if ($target eq 'web') {
3165: $currentstring = $token->[2];
3166: } elsif ($target eq 'tex') {
3167: $currentstring='}';
3168: }
3169: return $currentstring;
3170: }
3171:
3172: #-- <server> tag
3173: sub start_server {
3174: my ($target,$token) = @_;
3175: my $currentstring = '';
3176: if ($target eq 'web') {
3177: $currentstring = $token->[4];
3178: }
3179: return $currentstring;
3180: }
3181:
3182: sub end_server {
3183: my ($target,$token) = @_;
3184: my $currentstring = '';
3185: if ($target eq 'web') {
3186: $currentstring = $token->[2];
3187: }
3188: return $currentstring;
3189: }
3190:
3191: #-- <spacer> tag (end tag forbidden)
3192: sub start_spacer {
3193: my ($target,$token) = @_;
3194: my $currentstring = '';
3195: if ($target eq 'web') {
3196: $currentstring = $token->[4];
3197: }
3198: return $currentstring;
3199: }
3200:
3201: sub end_spacer {
3202: my ($target,$token) = @_;
3203: my $currentstring = '';
3204: if ($target eq 'web') {
3205: $currentstring = $token->[2];
3206: }
3207: return $currentstring;
3208: }
3209:
3210: #-- <span> tag (end tag required)
3211: sub start_span {
3212: my ($target,$token) = @_;
3213: my $currentstring = '';
3214: if ($target eq 'web') {
3215: $currentstring = $token->[4];
3216: }
3217: return $currentstring;
3218: }
3219:
3220: sub end_span {
3221: my ($target,$token) = @_;
3222: my $currentstring = '';
3223: if ($target eq 'web') {
3224: $currentstring = $token->[2];
3225: }
3226: return $currentstring;
3227: }
3228:
3229: #-- <tbody> tag (end tag optional)
3230: sub start_tbody {
3231: my ($target,$token) = @_;
3232: my $currentstring = '';
3233: if ($target eq 'web') {
3234: $currentstring = $token->[4];
3235: }
3236: return $currentstring;
3237: }
3238:
3239: sub end_tbody {
3240: my ($target,$token) = @_;
3241: my $currentstring = '';
3242: if ($target eq 'web') {
3243: $currentstring = $token->[2];
3244: }
3245: return $currentstring;
3246: }
3247:
3248: #-- <tfoot> tag (end tag optional)
3249: sub start_tfoot {
3250: my ($target,$token) = @_;
3251: my $currentstring = '';
3252: if ($target eq 'web') {
3253: $currentstring = $token->[4];
3254: }
3255: return $currentstring;
3256: }
3257:
3258: sub end_tfoot {
3259: my ($target,$token) = @_;
3260: my $currentstring = '';
3261: if ($target eq 'web') {
3262: $currentstring = $token->[2];
3263: }
3264: return $currentstring;
3265: }
3266:
3267: #-- <thead> tag (end tag optional)
3268: sub start_thead {
3269: my ($target,$token) = @_;
3270: my $currentstring = '';
3271: if ($target eq 'web') {
3272: $currentstring = $token->[4];
3273: }
3274: return $currentstring;
3275: }
3276:
3277: sub end_thead {
3278: my ($target,$token) = @_;
3279: my $currentstring = '';
3280: if ($target eq 'web') {
3281: $currentstring = $token->[2];
3282: }
3283: return $currentstring;
3284: }
3285:
3286: #-- <var> tag
3287: sub start_var {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'web') {
3291: $currentstring = $token->[4];
3292: } elsif ($target eq 'tex') {
3293: $currentstring = '\textit{';
3294: }
3295: return $currentstring;
3296: }
3297:
3298: sub end_var {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web') {
3302: $currentstring = $token->[2];
3303: } elsif ($target eq 'tex') {
3304: $currentstring = '}';
3305: }
3306: return $currentstring;
3307: }
3308:
3309: #-- <wbr> tag (end tag forbidden)
3310: sub start_wbr {
3311: my ($target,$token) = @_;
3312: my $currentstring = '';
3313: if ($target eq 'web') {
3314: $currentstring = $token->[4];
3315: }
3316: return $currentstring;
3317: }
3318:
3319: sub end_wbr {
3320: my ($target,$token) = @_;
3321: my $currentstring = '';
3322: if ($target eq 'web') {
3323: $currentstring = $token->[2];
3324: }
3325: return $currentstring;
3326: }
3327:
3328: #-- <hideweboutput> tag
3329: sub start_hideweboutput {
3330: my ($target,$token) = @_;
3331: if ($target eq 'web') {
3332: &Apache::lonxml::startredirection();
3333: }
3334: return '';
3335: }
3336:
3337: sub end_hideweboutput {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web') {
3341: $currentstring = &Apache::lonxml::endredirection();
3342: }
3343: return '';
3344: }
3345:
3346:
3347: sub image_replication {
3348: my $src = shift;
3349: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3350: #replicates eps or ps
3351: my $epssrc = my $pssrc = $src;
3352: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3353: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3354: if (not -e $epssrc && not -e $pssrc) {
3355: my $result=&Apache::lonnet::repcopy($epssrc);
3356: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3357: }
3358: return '';
3359: }
3360:
3361: sub recalc {
3362: my $argument = shift;
3363: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3364: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3365: my $value=$1;
3366: my $units=$2;
3367: if ($units eq 'cm') {
3368: $value*=10;
3369: } elsif ($units eq 'in') {
3370: $value*=25.4;
3371: } elsif ($units eq 'pc') {
3372: $value*=(25.4*12/72.27);
3373: } elsif ($units eq 'pt') {
3374: $value*=(25.4/72.27);
3375: }
3376: return $value.' mm';
3377: }
3378:
3379: sub LATEX_length {
3380: my $garbage=shift;
3381: $garbage=~s/^\s+(\S.*)/$1/;
3382: $garbage=~s/(.*\S)\s+$/$1/;
3383: $garbage=~s/(\s)+/$1/;
3384: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;
3385: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;
3386: $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;
3387: $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;
3388: $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;
3389: $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;
3390: $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;
3391: $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;
3392: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3393: my $value=length($garbage);
3394: return $value;
3395: }
3396:
3397:
3398:
3399:
3400: 1;
3401: __END__
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