1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.219 2004/06/03 14:57:05 sakharuk Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $inside ='\\documentstyle{article}'.$inside;
90: &Apache::lonxml::debug("M is starting with:$inside:");
91: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
92: if ($eval eq 'on') {
93: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
94: #&Apache::lonxml::debug("M is evaulated to:$inside:");
95: }
96: $currentstring = &Apache::lontexconvert::converted(\$inside);
97: if ($Apache::lontexconvert::errorstring) {
98: &Apache::lonxml::warning("tth error: ".
99: $Apache::lontexconvert::errorstring);
100: $Apache::lontexconvert::errorstring='';
101: }
102: #&Apache::lonxml::debug("M is ends with:$currentstring:");
103: $Apache::lonxml::post_evaluate=0;
104: } elsif ($target eq 'tex') {
105: $currentstring = $inside;
106: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
107: if ($eval eq 'on') {
108: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
109: }
110: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
111: $Apache::lonxml::post_evaluate=0;
112: }
113: return $currentstring;
114: }
115:
116: sub end_m {
117: my ($target,$token) = @_;
118: my $currentstring = '';
119: if ($target eq 'tex') {
120: $currentstring = "";
121: }
122: return $currentstring;
123: }
124:
125: sub start_tthoption {
126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
127: my $result;
128: if ($target eq 'web') {
129: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
130: $inside=~s/^\s*//;
131: if ($ENV{'browser.mathml'}) {
132: &tth::ttmoptions($inside);
133: } else {
134: &tth::tthoptions($inside);
135: }
136: }
137: return $result;
138: }
139:
140: sub end_tthoption {
141: my ($target,$token) = @_;
142: my $result;
143: return $result;
144: }
145:
146: #-- <html> tag (end tag optional)
147: sub start_html {
148: my ($target,$token) = @_;
149: my $currentstring = '';
150: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
151: &Apache::lontexconvert::init_tth();
152: if ($target eq 'web' || $target eq 'edit') {
153: $currentstring = &Apache::lonxml::xmlbegin().
154: &Apache::lonxml::fontsettings();
155: } elsif ($target eq 'tex') {
156: @Apache::londefdef::table = ();
157: $currentstring .= '\documentclass[letterpaper]{article}';
158: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
159: $currentstring .= '\newcommand{\keephidden}[1]{}'.
160: '\renewcommand{\deg}{$^{\circ}$}'.
161: '\usepackage{longtable}'.
162: '\usepackage{textcomp}'.
163: '\usepackage{makeidx}'.
164: '\usepackage[dvips]{graphicx}'.
165: '\usepackage{epsfig}'.
166: '\usepackage{calc}'.
167: '\usepackage{amsmath}'.
168: '\usepackage{amssymb}'.
169: '\usepackage{amsfonts}'.
170: '\usepackage{amsthm}'.
171: '\usepackage{amscd}'.
172: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
173: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
174: }
175: return $currentstring;
176: }
177:
178: sub end_html {
179: my ($target,$token) = @_;
180: my $currentstring = '';
181: if ($target eq 'web') {
182: $currentstring = &Apache::lonxml::xmlend();
183: }
184: return $currentstring;
185: }
186:
187: #-- <head> tag (end tag optional)
188: sub start_head {
189: my ($target,$token) = @_;
190: my $currentstring = '';
191: if ($target eq 'web') {
192: $currentstring = $token->[4];
193: }
194: return $currentstring;
195: }
196:
197: sub end_head {
198: my ($target,$token) = @_;
199: my $currentstring = '';
200: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
201: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
202: $token->[2];
203: }
204: return $currentstring;
205: }
206:
207: #-- <map> tag (end tag required)
208: sub start_map {
209: my ($target,$token) = @_;
210: my $currentstring = '';
211: if ($target eq 'web') {
212: $currentstring = $token->[4];
213: }
214: return $currentstring;
215: }
216:
217: sub end_map {
218: my ($target,$token) = @_;
219: my $currentstring = '';
220: if ($target eq 'web') {
221: $currentstring = $token->[2];
222: }
223: return $currentstring;
224: }
225:
226: #-- <select> tag (end tag required)
227: sub start_select {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web') {
231: $currentstring = $token->[4];
232: } elsif ($target eq 'tex') {
233: $Apache::londefdef::select=0;
234: }
235: return $currentstring;
236: }
237:
238: sub end_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web') {
242: $currentstring = $token->[2];
243: }
244: return $currentstring;
245: }
246:
247: #-- <option> tag (end tag optional)
248: sub start_option {
249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
250: my $currentstring = '';
251: if ($target eq 'web') {
252: $currentstring = $token->[4];
253: } elsif ($target eq 'tex') {
254: $Apache::londefdef::select++;
255: if ($Apache::londefdef::select == 1) {
256: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
257: } else {
258: $currentstring='\keephidden{';
259: }
260: }
261: return $currentstring;
262: }
263:
264: sub end_option {
265: my ($target,$token) = @_;
266: my $currentstring = '';
267: if ($target eq 'web') {
268: $currentstring = $token->[2];
269: } elsif ($target eq 'tex') {
270: $currentstring='}';
271: }
272: return $currentstring;
273: }
274:
275: #-- <input> tag (end tag forbidden)
276: sub start_input {
277: my ($target,$token) = @_;
278: my $currentstring = '';
279: if ($target eq 'web') {
280: $currentstring = $token->[4];
281: }
282: return $currentstring;
283: }
284:
285: sub end_input {
286: my ($target,$token) = @_;
287: my $currentstring = '';
288: if ($target eq 'web') {
289: $currentstring = $token->[2];
290: }
291: return $currentstring;
292: }
293:
294: #-- <textarea> tag (end tag required)
295: sub start_textarea {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web') {
299: $currentstring = $token->[4];
300: }
301: return $currentstring;
302: }
303:
304: sub end_textarea {
305: my ($target,$token) = @_;
306: my $currentstring = '';
307: if ($target eq 'web') {
308: $currentstring = $token->[2];
309: }
310: return $currentstring;
311: }
312:
313: #-- <form> tag (end tag required)
314: sub start_form {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web') {
318: $currentstring = $token->[4];
319: }
320: return $currentstring;
321: }
322:
323: sub end_form {
324: my ($target,$token) = @_;
325: my $currentstring = '';
326: if ($target eq 'web') {
327: $currentstring = $token->[2];
328: }
329: return $currentstring;
330: }
331:
332: #-- <title> tag (end tag required)
333: sub start_title {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web') {
337: $currentstring = $token->[4];
338: } elsif ($target eq 'tex') {
339: $currentstring .= '\keephidden{Title of the document: '
340: }
341: if ($target eq 'meta') {
342: $currentstring='<title>';
343: &start_output($target);
344: }
345: return $currentstring;
346: }
347:
348: sub end_title {
349: my ($target,$token) = @_;
350: my $currentstring = '';
351: if ($target eq 'web') {
352: $currentstring = $token->[2];
353: } elsif ($target eq 'tex') {
354: $currentstring .= '}';
355: }
356: if ($target eq 'meta') {
357: &end_output($target);
358: $currentstring='</title>';
359: }
360: return $currentstring;
361: }
362:
363: #-- <meta> tag (end tag forbidden)
364: sub start_meta {
365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
366: my $currentstring = '';
367: if ($target eq 'web') {
368: my $args='';
369: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
370: if ($args eq '') {
371: &Apache::lonxml::get_all_text("/meta",$parser);
372: } else {
373: $currentstring = $token->[4];
374: }
375: } elsif ($target eq 'meta') {
376: unless (&Apache::lonxml::get_param
377: ('http-equiv',$parstack,$safeeval,undef,1)) {
378: my $name=$token->[2]->{'name'};
379: $name=~tr/A-Z/a-z/;
380: $name=~s/\s/\_/gs;
381: $name=~s/\W//gs;
382: if ($name) {
383: $currentstring='<'.$name;
384: my $display=&Apache::lonxml::get_param
385: ('display',$parstack,$safeeval,undef,1);
386: if ($display) {
387: $display=~s/\"/\'/g;
388: $currentstring.=' display="'.$display.'"';
389: }
390: $currentstring.='>'.
391: &Apache::lonxml::get_param
392: ('content',$parstack,$safeeval,undef,1).
393: '</'.$name.'>';
394: }
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=&HTML::Entities::encode($display,'<>&"');
399: $currentstring.='<'.$name.'.display>'.$display.
400: '</'.$name.'.display>';
401: }
402: }
403: } elsif ($target eq 'tex') {
404: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
405: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
406: if ((not defined $content) && (not defined $name)) {
407: &Apache::lonxml::startredirection();
408: }
409: }
410: return $currentstring;
411: }
412:
413: sub end_meta {
414: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
415: my $currentstring = '';
416: if ($target eq 'web') {
417: my $args='';
418: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
419: if ($args ne '') {
420: $currentstring = $token->[4];
421: }
422: } elsif ($target eq 'tex') {
423: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
424: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
425: if ((not defined $content) && (not defined $name)) {
426: &Apache::lonxml::endredirection();
427: }
428: }
429: return $currentstring;
430: }
431:
432: # accessrule
433: sub start_accessrule {
434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
435: my $currentstring = '';
436: my $eff=&Apache::lonxml::get_param
437: ('effect',$parstack,$safeeval,undef,1);
438: my $realm=&Apache::lonxml::get_param
439: ('realm',$parstack,$safeeval,undef,1);
440: my $role=&Apache::lonxml::get_param
441: ('role',$parstack,$safeeval,undef,1);
442: $realm=~s/\s+//g;
443: $realm=~s/\//\_/g;
444: $realm=~s/^\_//;
445: $realm=~s/\W/\;/g;
446: $role=~s/\s+//g;
447: $role=~s/\//\_/g;
448: $role=~s/\W/\;/g;
449: if ($target eq 'web') {
450: my $args='';
451: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
452: if ($args eq '') {
453: &Apache::lonxml::get_all_text("/accessrule",$parser);
454: } else {
455: $currentstring = $token->[4];
456: }
457: }
458: if ($target eq 'meta') {
459: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
460: }
461: return $currentstring;
462: }
463:
464: sub end_accessrule {
465: my ($target,$token,$tagstack,$parstack,$parser) = @_;
466: my $currentstring = '';
467: if ($target eq 'web') {
468: my $args='';
469: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
470: if ($args ne '') {
471: $currentstring = $token->[4];
472: }
473: }
474: return $currentstring;
475: }
476:
477: #-- <body> tag (end tag required)
478: sub start_body {
479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
480: my $currentstring = '';
481: if ($target eq 'web') {
482: if ($Apache::lonhomework::parsing_a_problem) {
483: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
484: return '';
485: }
486: if (!$Apache::lonxml::registered &&
487: $ENV{'request.state'} eq 'published') {
488: $currentstring.='<head>'.
489: &Apache::lonmenu::registerurl(undef,$target).'</head>';
490: }
491: # Accessibility
492: if ($ENV{'browser.imagesuppress'} eq 'on') {
493: delete($token->[2]->{'background'});
494: }
495: if ($ENV{'browser.fontenhance'} eq 'on') {
496: my $style='';
497: foreach my $key (keys(%{$token->[2]})) {
498: if ($key =~ /^style$/i) {
499: $style.=$token->[2]->{$key}.';';
500: delete($token->[2]->{$key});
501: }
502: }
503: $token->[2]->{'style'}=$style.'; font-size: x-large;';
504: }
505: if ($ENV{'browser.blackwhite'} eq 'on') {
506: delete($token->[2]->{'font'});
507: delete($token->[2]->{'link'});
508: delete($token->[2]->{'alink'});
509: delete($token->[2]->{'vlink'});
510: delete($token->[2]->{'bgcolor'});
511: delete($token->[2]->{'background'});
512: }
513: # Overload loads
514: my $onLoad='';
515: foreach my $key (keys(%{$token->[2]})) {
516: if ($key =~ /^onload$/i) {
517: $onLoad.=$token->[2]->{$key}.';';
518: delete($token->[2]->{$key});
519: }
520: }
521: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
522: my $onUnload='';
523: foreach my $key (keys(%{$token->[2]})) {
524: if ($key =~ /^onunload$/i) {
525: $onUnload.=$token->[2]->{$key}.';';
526: delete($token->[2]->{$key});
527: }
528: }
529: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
530: ';'.$onUnload;
531:
532: $currentstring .= '<'.$token->[1];
533: foreach (keys %{$token->[2]}) {
534: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
535: }
536: $currentstring.='>';
537: if ($ENV{'request.state'} ne 'published') {
538: $currentstring.=(<<EDITBUTTON);
539: <form method="post">
540: <input type="submit" name="editmode" accesskey="e" value="Edit" />
541: </form>
542: EDITBUTTON
543: } else {
544: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
545: }
546: $currentstring.=&Apache::lonxml::message_location();
547: } elsif ($target eq 'tex') {
548: $currentstring = '\begin{document}';
549: }
550: return $currentstring;
551: }
552:
553: sub end_body {
554: my ($target,$token) = @_;
555: my $currentstring = '';
556: if ($target eq 'web') {
557: $currentstring = $token->[2];
558: } elsif ($target eq 'tex') {
559: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
560: }
561: return $currentstring;
562: }
563:
564: #-- <center> tag (end tag required)
565: sub start_center {
566: my ($target,$token) = @_;
567: my $currentstring = '';
568: if ($target eq 'web') {
569: $currentstring = $token->[4];
570: } elsif ($target eq 'tex') {
571: $currentstring = '\begin{center}';
572: }
573: return $currentstring;
574: }
575:
576: sub end_center {
577: my ($target,$token) = @_;
578: my $currentstring = '';
579: if ($target eq 'web') {
580: $currentstring = $token->[2];
581: } elsif ($target eq 'tex') {
582: $currentstring = '\end{center}';
583: }
584: return $currentstring;
585: }
586:
587: #-- <b> tag (end tag required)
588: sub start_b {
589: my ($target,$token) = @_;
590: my $currentstring = '';
591: if ($target eq 'web') {
592: $currentstring = $token->[4];
593: } elsif ($target eq 'tex') {
594: $currentstring = '\textbf{';
595: }
596: return $currentstring;
597: }
598:
599: sub end_b {
600: my ($target,$token) = @_;
601: my $currentstring = '';
602: if ($target eq 'web') {
603: $currentstring = $token->[2];
604: } elsif ($target eq 'tex') {
605: $currentstring = '}';
606: }
607: return $currentstring;
608: }
609:
610: #-- <strong> tag (end tag required)
611: sub start_strong {
612: my ($target,$token) = @_;
613: my $currentstring = '';
614: if ($target eq 'web') {
615: $currentstring = $token->[4];
616: } elsif ($target eq 'tex') {
617: $currentstring = '\textbf{';
618: }
619: return $currentstring;
620: }
621:
622: sub end_strong {
623: my ($target,$token) = @_;
624: my $currentstring = '';
625: if ($target eq 'web') {
626: $currentstring = $token->[2];
627: } elsif ($target eq 'tex') {
628: $currentstring = '}';
629: }
630: return $currentstring;
631: }
632:
633: #-- <h1> tag (end tag required)
634: sub start_h1 {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
636: my $currentstring = '';
637: if ($target eq 'web') {
638: $currentstring .= $token->[4];
639: } elsif ($target eq 'tex') {
640: my $pre;
641: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
642: if ($align eq 'center') {
643: $pre='\begin{center}';
644: } elsif ($align eq 'left') {
645: $pre='\rlap{';
646: } elsif ($align eq 'right') {
647: $pre=' \hfill \llap{';
648: }
649: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
650: if (not defined $TeXsize) {$TeXsize="large";}
651: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
652: } elsif ($target eq 'meta') {
653: $currentstring='<subject>';
654: &start_output($target);
655: }
656: return $currentstring;
657: }
658:
659: sub end_h1 {
660: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
661: my $currentstring = '';
662: if ($target eq 'web') {
663: $currentstring .= $token->[2];
664: } elsif ($target eq 'tex') {
665: my $post='\vskip 0 mm ';
666: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
667: if ($align eq 'center') {
668: $post='\end{center}';
669: } elsif ($align eq 'left') {
670: $post='} \hfill'.'\vskip 0 mm ';
671: } elsif ($align eq 'right') {
672: $post='}'.'\vskip 0 mm ';
673: }
674: $currentstring .= '}}'.$post;
675: } elsif ($target eq 'meta') {
676: &end_output($target);
677: $currentstring='</subject>';
678: }
679: return $currentstring;
680: }
681:
682: #-- <h2> tag
683: sub start_h2 {
684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
685: my $currentstring = '';
686: if ($target eq 'web') {
687: $currentstring .= $token->[4];
688: } elsif ($target eq 'tex') {
689: my $pre;
690: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
691: if ($align eq 'center') {
692: $pre='\begin{center}';
693: } elsif ($align eq 'left') {
694: $pre='\rlap{';
695: } elsif ($align eq 'right') {
696: $pre=' \hfill \llap{';
697: }
698: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
699: if (not defined $TeXsize) {$TeXsize="large";}
700: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_h2 {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
707: my $currentstring = '';
708: if ($target eq 'web') {
709: $currentstring .= $token->[2];
710: } elsif ($target eq 'tex') {
711: my $post='\vskip 0 mm ';
712: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
713: if ($align eq 'center') {
714: $post='\end{center}';
715: } elsif ($align eq 'left') {
716: $post='} \hfill'.'\vskip 0 mm ';
717: } elsif ($align eq 'right') {
718: $post='}'.'\vskip 0 mm ';
719: }
720: $currentstring .= '}}'.$post;
721: }
722: return $currentstring;
723: }
724:
725: #-- <h3> tag
726: sub start_h3 {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
728: my $currentstring = '';
729: if ($target eq 'web') {
730: $currentstring .= $token->[4];
731: } elsif ($target eq 'tex') {
732: my $pre;
733: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
734: if ($align eq 'center') {
735: $pre='\begin{center}';
736: } elsif ($align eq 'left') {
737: $pre='\rlap{';
738: } elsif ($align eq 'right') {
739: $pre=' \hfill \llap{';
740: }
741: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
742: if (not defined $TeXsize) {$TeXsize="large";}
743: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
744: }
745: return $currentstring;
746: }
747:
748: sub end_h3 {
749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
750: my $currentstring = '';
751: if ($target eq 'web') {
752: $currentstring .= $token->[2];
753: } elsif ($target eq 'tex') {
754: my $post='\vskip 0 mm ';
755: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
756: if ($align eq 'center') {
757: $post='\end{center}';
758: } elsif ($align eq 'left') {
759: $post='} \hfill'.'\vskip 0 mm ';
760: } elsif ($align eq 'right') {
761: $post='}'.'\vskip 0 mm ';
762: }
763: $currentstring .= '}}'.$post;
764: }
765: return $currentstring;
766: }
767:
768: #-- <h4> tag
769: sub start_h4 {
770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
771: my $currentstring = '';
772: if ($target eq 'web') {
773: $currentstring .= $token->[4];
774: } elsif ($target eq 'tex') {
775: my $pre;
776: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
777: if ($align eq 'center') {
778: $pre='\begin{center}';
779: } elsif ($align eq 'left') {
780: $pre='\rlap{';
781: } elsif ($align eq 'right') {
782: $pre=' \hfill \llap{';
783: }
784: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
785: if (not defined $TeXsize) {$TeXsize="large";}
786: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
787: }
788: return $currentstring;
789: }
790:
791: sub end_h4 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = '';
794: if ($target eq 'web') {
795: $currentstring .= $token->[2];
796: } elsif ($target eq 'tex') {
797: my $post='\vskip 0 mm ';
798: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
799: if ($align eq 'center') {
800: $post='\end{center}';
801: } elsif ($align eq 'left') {
802: $post='} \hfill'.'\vskip 0 mm ';
803: } elsif ($align eq 'right') {
804: $post='}'.'\vskip 0 mm ';
805: }
806: $currentstring .= '}}'.$post;
807: }
808: return $currentstring;
809: }
810:
811: #-- <h5> tag
812: sub start_h5 {
813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
814: my $currentstring = '';
815: if ($target eq 'web') {
816: $currentstring .= $token->[4];
817: } elsif ($target eq 'tex') {
818: my $pre;
819: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
820: if ($align eq 'center') {
821: $pre='\begin{center}';
822: } elsif ($align eq 'left') {
823: $pre='\rlap{';
824: } elsif ($align eq 'right') {
825: $pre=' \hfill \llap{';
826: }
827: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
828: if (not defined $TeXsize) {$TeXsize="large";}
829: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
830: }
831: return $currentstring;
832: }
833:
834: sub end_h5 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = '';
837: if ($target eq 'web') {
838: $currentstring .= $token->[2];
839: } elsif ($target eq 'tex') {
840: my $post='\vskip 0 mm ';
841: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
842: if ($align eq 'center') {
843: $post='\end{center}';
844: } elsif ($align eq 'left') {
845: $post='} \hfill'.'\vskip 0 mm ';
846: } elsif ($align eq 'right') {
847: $post='}'.'\vskip 0 mm ';
848: }
849: $currentstring .= '}}'.$post;
850: }
851: return $currentstring;
852: }
853:
854: #-- <h6> tag
855: sub start_h6 {
856: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
857: my $currentstring = '';
858: if ($target eq 'web') {
859: $currentstring .= $token->[4];
860: } elsif ($target eq 'tex') {
861: my $pre;
862: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
863: if ($align eq 'center') {
864: $pre='\begin{center}';
865: } elsif ($align eq 'left') {
866: $pre='\rlap{';
867: } elsif ($align eq 'right') {
868: $pre=' \hfill \llap{';
869: }
870: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
871: if (not defined $TeXsize) {$TeXsize="large";}
872: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
873: }
874: return $currentstring;
875: }
876:
877: sub end_h6 {
878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
879: my $currentstring = '';
880: if ($target eq 'web') {
881: $currentstring .= $token->[2];
882: } elsif ($target eq 'tex') {
883: my $post='\vskip 0 mm ';
884: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
885: if ($align eq 'center') {
886: $post='\end{center}';
887: } elsif ($align eq 'left') {
888: $post='} \hfill'.'\vskip 0 mm ';
889: } elsif ($align eq 'right') {
890: $post='}'.'\vskip 0 mm ';
891: }
892: $currentstring .= '}}'.$post;
893: }
894: return $currentstring;
895: }
896:
897: #--- <cite> tag (end tag required)
898: sub start_cite {
899: my ($target,$token) = @_;
900: my $currentstring = '';
901: if ($target eq 'web') {
902: $currentstring .= $token->[4];
903: } elsif ($target eq 'tex') {
904: $currentstring .= '\textit{';
905: }
906: return $currentstring;
907: }
908:
909: sub end_cite {
910: my ($target,$token) = @_;
911: my $currentstring = '';
912: if ($target eq 'web') {
913: $currentstring .= $token->[2];
914: } elsif ($target eq 'tex') {
915: $currentstring .= '}';
916: }
917: return $currentstring;
918: }
919:
920: #-- <i> tag (end tag required)
921: sub start_i {
922: my ($target,$token) = @_;
923: my $currentstring = '';
924: if ($target eq 'web') {
925: $currentstring .= $token->[4];
926: } elsif ($target eq 'tex') {
927: $currentstring .= '\textit{';
928: }
929: return $currentstring;
930: }
931:
932: sub end_i {
933: my ($target,$token) = @_;
934: my $currentstring = '';
935: if ($target eq 'web') {
936: $currentstring .= $token->[2];
937: } elsif ($target eq 'tex') {
938: $currentstring .= '}';
939: }
940: return $currentstring;
941: }
942:
943: #-- <address> tag (end tag required)
944: sub start_address {
945: my ($target,$token) = @_;
946: my $currentstring = '';
947: if ($target eq 'web') {
948: $currentstring .= $token->[4];
949: } elsif ($target eq 'tex') {
950: $currentstring .= '\textit{';
951: }
952: return $currentstring;
953: }
954:
955: sub end_address {
956: my ($target,$token) = @_;
957: my $currentstring = '';
958: if ($target eq 'web') {
959: $currentstring .= $token->[2];
960: } elsif ($target eq 'tex') {
961: $currentstring .= '}';
962: }
963: return $currentstring;
964: }
965:
966: #-- <dfn> tag (end tag required)
967: sub start_dfn {
968: my ($target,$token) = @_;
969: my $currentstring = '';
970: if ($target eq 'web') {
971: $currentstring .= $token->[4];
972: } elsif ($target eq 'tex') {
973: $currentstring .= '\textit{';
974: }
975: return $currentstring;
976: }
977:
978: sub end_dfn {
979: my ($target,$token) = @_;
980: my $currentstring = '';
981: if ($target eq 'web') {
982: $currentstring .= $token->[2];
983: } elsif ($target eq 'tex') {
984: $currentstring .= '}';
985: }
986: return $currentstring;
987: }
988:
989: #-- <tt> tag (end tag required)
990: sub start_tt {
991: my ($target,$token) = @_;
992: my $currentstring = '';
993: if ($target eq 'web') {
994: $currentstring .= $token->[4];
995: } elsif ($target eq 'tex') {
996: $currentstring .= '\texttt{';
997: }
998: return $currentstring;
999: }
1000:
1001: sub end_tt {
1002: my ($target,$token) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web') {
1005: $currentstring .= $token->[2];
1006: } elsif ($target eq 'tex') {
1007: $currentstring .= '}';
1008: }
1009: return $currentstring;
1010: }
1011:
1012: #-- <kbd> tag (end tag required)
1013: sub start_kbd {
1014: my ($target,$token) = @_;
1015: my $currentstring = '';
1016: if ($target eq 'web') {
1017: $currentstring .= $token->[4];
1018: } elsif ($target eq 'tex') {
1019: $currentstring .= '\texttt{';
1020: }
1021: return $currentstring;
1022: }
1023:
1024: sub end_kbd {
1025: my ($target,$token) = @_;
1026: my $currentstring = '';
1027: if ($target eq 'web') {
1028: $currentstring .= $token->[2];
1029: } elsif ($target eq 'tex') {
1030: $currentstring .= '}';
1031: }
1032: return $currentstring;
1033: }
1034:
1035: #-- <code> tag (end tag required)
1036: sub start_code {
1037: my ($target,$token) = @_;
1038: my $currentstring = '';
1039: if ($target eq 'web') {
1040: $currentstring .= $token->[4];
1041: } elsif ($target eq 'tex') {
1042: $currentstring .= '\texttt{';
1043: }
1044: return $currentstring;
1045: }
1046:
1047: sub end_code {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web') {
1051: $currentstring .= $token->[2];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '}';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: #-- <em> tag (end tag required)
1059: sub start_em {
1060: my ($target,$token) = @_;
1061: my $currentstring = '';
1062: if ($target eq 'web') {
1063: $currentstring .= $token->[4];
1064: } elsif ($target eq 'tex') {
1065: $currentstring .= '\emph{';
1066: }
1067: return $currentstring;
1068: }
1069:
1070: sub end_em {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web') {
1074: $currentstring .= $token->[2];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '}';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: #-- <q> tag (end tag required)
1082: sub start_q {
1083: my ($target,$token) = @_;
1084: my $currentstring = '';
1085: if ($target eq 'web') {
1086: $currentstring .= $token->[4];
1087: } elsif ($target eq 'tex') {
1088: $currentstring .= '\emph{';
1089: }
1090: return $currentstring;
1091: }
1092:
1093: sub end_q {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web') {
1097: $currentstring .= $token->[2];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '}';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: #-- <p> tag (end tag optional)
1105: #optional attribute - align="center|left|right"
1106: sub start_p {
1107: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web') {
1110: $currentstring .= $token->[4];
1111: } elsif ($target eq 'tex') {
1112: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1113: if ($align eq 'center') {
1114: $currentstring='\begin{center}\par';
1115: } elsif ($align eq 'right') {
1116: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1117: } elsif ($align eq 'left') {
1118: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1119: } else {
1120: $currentstring='\par ';
1121: }
1122: my $signal=1;#<p> does not work inside <b>...</b>
1123: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1124: if (!$signal) {$currentstring = '';}
1125: }
1126: }
1127: return $currentstring;
1128: }
1129:
1130: sub end_p {
1131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web') {
1134: $currentstring .= $token->[2];
1135: } elsif ($target eq 'tex') {
1136: if ($$tagstack[-1] eq 'p') {
1137: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1138: if ($align eq 'center') {
1139: $currentstring .= '\end{center}';
1140: } elsif ($align eq 'right') {
1141: $currentstring .= '}}';
1142: } elsif ($align eq 'left') {
1143: $currentstring .= '}\hfill}';
1144: }
1145: }
1146: }
1147: return $currentstring;
1148: }
1149:
1150: #-- <br> tag (end tag forbidden)
1151: sub start_br {
1152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1153: my $currentstring = '';
1154: if ($target eq 'web') {
1155: $currentstring .= $token->[4];
1156: } elsif ($target eq 'tex') {
1157: if (($$tagstack[-2] eq 'b') || ($$tagstack[-2] eq 'strong')) {
1158: $currentstring .= ' \vskip 0 mm ';
1159: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1160: $currentstring .= '\strut \\\\ \strut ';
1161: }
1162: }
1163: return $currentstring;
1164: }
1165:
1166: sub end_br {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web') {
1170: $currentstring .= $token->[2];
1171: }
1172: return $currentstring;
1173: }
1174:
1175: #-- <big> tag (end tag required)
1176: sub start_big {
1177: my ($target,$token) = @_;
1178: my $currentstring = '';
1179: if ($target eq 'web') {
1180: $currentstring .= $token->[4];
1181: } elsif ($target eq 'tex') {
1182: $currentstring .= '{\large ';
1183: }
1184: return $currentstring;
1185: }
1186:
1187: sub end_big {
1188: my ($target,$token) = @_;
1189: my $currentstring = '';
1190: if ($target eq 'web') {
1191: $currentstring .= $token->[2];
1192: } elsif ($target eq 'tex') {
1193: $currentstring .= '}';
1194: }
1195: return $currentstring;
1196: }
1197:
1198: #-- <small> tag (end tag required)
1199: sub start_small {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web') {
1203: $currentstring .= $token->[4];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '{\footnotesize ';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: sub end_small {
1211: my ($target,$token) = @_;
1212: my $currentstring = '';
1213: if ($target eq 'web') {
1214: $currentstring .= $token->[2];
1215: } elsif ($target eq 'tex') {
1216: $currentstring .= '}';
1217: }
1218: return $currentstring;
1219: }
1220:
1221: #-- <basefont> tag (end tag forbidden)
1222: sub start_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 = '{\\'.$basesize.' ';
1231: }
1232: }
1233: return $currentstring;
1234: }
1235:
1236: sub end_basefont {
1237: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1238: my $currentstring = '';
1239: if ($target eq 'web') {
1240: $currentstring = $token->[4];
1241: } elsif ($target eq 'tex') {
1242: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1243: if (defined $basesize) {
1244: $currentstring = '}';
1245: }
1246: }
1247: return $currentstring;
1248: }
1249:
1250: #-- <font> tag (end tag required)
1251: sub start_font {
1252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1253: my $currentstring = '';
1254: if ($target eq 'web') {
1255: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1256: if ($face!~/symbol/i) {
1257: if (($ENV{'browser.fontenhance'} eq 'on') ||
1258: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1259: }
1260: $currentstring = $token->[4];
1261: } elsif ($target eq 'tex') {
1262: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1263: if (defined $fontsize) {
1264: $currentstring = '{\\'.$fontsize.' ';
1265: }
1266: }
1267: return $currentstring;
1268: }
1269:
1270: sub end_font {
1271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1272: my $currentstring = '';
1273: if ($target eq 'web') {
1274: $currentstring = $token->[2];
1275: } elsif ($target eq 'tex') {
1276: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1277: if (defined $fontsize) {
1278: $currentstring = '}';
1279: }
1280: }
1281: return $currentstring;
1282: }
1283:
1284: #-- <strike> tag (end tag required)
1285: sub start_strike {
1286: my ($target,$token) = @_;
1287: my $currentstring = '';
1288: if ($target eq 'web') {
1289: $currentstring .= $token->[4];
1290: } elsif ($target eq 'tex') {
1291: &Apache::lonxml::startredirection();
1292: }
1293: return $currentstring;
1294: }
1295:
1296: sub end_strike {
1297: my ($target,$token) = @_;
1298: my $currentstring = '';
1299: if ($target eq 'web') {
1300: $currentstring .= $token->[2];
1301: } elsif ($target eq 'tex') {
1302: $currentstring=&Apache::lonxml::endredirection();
1303: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1304: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1305: $currentstring=~s/(\S)\s*$/$1\}/;
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <s> tag (end tag required)
1311: sub start_s {
1312: my ($target,$token) = @_;
1313: my $currentstring = '';
1314: if ($target eq 'web') {
1315: $currentstring .= $token->[4];
1316: } elsif ($target eq 'tex') {
1317: &Apache::lonxml::startredirection();
1318: }
1319: return $currentstring;
1320: }
1321:
1322: sub end_s {
1323: my ($target,$token) = @_;
1324: my $currentstring = '';
1325: if ($target eq 'web') {
1326: $currentstring .= $token->[2];
1327: } elsif ($target eq 'tex') {
1328: $currentstring=&Apache::lonxml::endredirection();
1329: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1330: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1331: $currentstring=~s/(\S)\s*$/$1\}/;
1332: }
1333: return $currentstring;
1334: }
1335:
1336: #-- <sub> tag (end tag required)
1337: sub start_sub {
1338: my ($target,$token) = @_;
1339: my $currentstring = '';
1340: if ($target eq 'web') {
1341: $currentstring .= $token->[4];
1342: } elsif ($target eq 'tex') {
1343: $currentstring .= '\ensuremath{_{';
1344: }
1345: return $currentstring;
1346: }
1347:
1348: sub end_sub {
1349: my ($target,$token) = @_;
1350: my $currentstring = '';
1351: if ($target eq 'web') {
1352: $currentstring .= $token->[2];
1353: } elsif ($target eq 'tex') {
1354: $currentstring .= '}}';
1355: }
1356: return $currentstring;
1357: }
1358:
1359: #-- <sup> tag (end tag required)
1360: sub start_sup {
1361: my ($target,$token) = @_;
1362: my $currentstring = '';
1363: if ($target eq 'web') {
1364: $currentstring .= $token->[4];
1365: } elsif ($target eq 'tex') {
1366: $currentstring .= '\ensuremath{^{';
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_sup {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web') {
1375: $currentstring .= $token->[2];
1376: } elsif ($target eq 'tex') {
1377: $currentstring .= '}}';
1378: }
1379: return $currentstring;
1380: }
1381:
1382: #-- <hr> tag (end tag forbidden)
1383: sub start_hr {
1384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1385: my $currentstring = '';
1386: if ($target eq 'web') {
1387: $currentstring .= $token->[4];
1388: } elsif ($target eq 'tex') {
1389: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1390: if (defined $LaTeXwidth) {
1391: if ($LaTeXwidth=~/^%/) {
1392: substr($LaTeXwidth,0,1)='';
1393: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1394: }
1395: } else {
1396: $LaTeXwidth ='0.9\textwidth';
1397: }
1398: my ($pre,$post);
1399: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1400: if (($align eq 'center') || (not defined $align)) {
1401: $pre=''; $post='';
1402: } elsif ($align eq 'left') {
1403: $pre='\rlap{'; $post='} \hfill';
1404: } elsif ($align eq 'right') {
1405: $pre=' \hfill \llap{'; $post='}';
1406: }
1407: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1408: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1409: }
1410: return $currentstring;
1411: }
1412:
1413: sub end_hr {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web') {
1417: $currentstring .= $token->[2];
1418: }
1419: return $currentstring;
1420: }
1421:
1422: #-- <div> tag (end tag required)
1423: sub start_div {
1424: my ($target,$token) = @_;
1425: my $currentstring = '';
1426: if ($target eq 'web') {
1427: $currentstring .= $token->[4];
1428: }
1429: return $currentstring;
1430: }
1431:
1432: sub end_div {
1433: my ($target,$token) = @_;
1434: my $currentstring = '';
1435: if ($target eq 'web') {
1436: $currentstring .= $token->[2];
1437: }
1438: return $currentstring;
1439: }
1440:
1441: #-- <a> tag (end tag required)
1442: sub start_a {
1443: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1444: my $currentstring = '';
1445: if ($target eq 'web') {
1446: $currentstring .= $token->[4];
1447: } elsif ($target eq 'tex') {
1448: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1449: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1450: if ($a=~/\S/) {
1451: $a=~s/([^\\])%/$1\\\%/g;
1452: $currentstring .= '\ref{URI: '.$a.'}';
1453: } elsif ($b=~/\S/) {
1454: $currentstring .= '\ref{Anchor: '.$b.'}';
1455: } else {
1456: $currentstring.='';
1457: }
1458: }
1459: return $currentstring;
1460: }
1461:
1462: sub end_a {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web') {
1466: $currentstring .= $token->[2];
1467: }
1468: return $currentstring;
1469: }
1470:
1471: #-- <li> tag (end tag optional)
1472: sub start_li {
1473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1474: my $currentstring = '';
1475: if ($target eq 'web') {
1476: $currentstring = $token->[4];
1477: } elsif ($target eq 'tex') {
1478: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1479: if ($type=~/circle/) {
1480: $currentstring .= ' \item[o] ';
1481: } elsif ($type=~/square/) {
1482: $currentstring .= ' \item[$\Box$] ';
1483: } elsif ($type ne '') {
1484: $currentstring .= ' \item['.$type.'] ';
1485: } else {
1486: $currentstring .= ' \item ';
1487: }
1488: }
1489: return $currentstring;
1490: }
1491:
1492: sub end_li {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web') {
1496: $currentstring = $token->[2];
1497: }
1498: return $currentstring;
1499: }
1500:
1501: #-- <u> tag (end tag required)
1502: sub start_u {
1503: my ($target,$token) = @_;
1504: my $currentstring = '';
1505: if ($target eq 'web') {
1506: $currentstring .= $token->[4];
1507: } elsif ($target eq 'tex') {
1508: &Apache::lonxml::startredirection();
1509: }
1510: return $currentstring;
1511: }
1512:
1513: sub end_u {
1514: my ($target,$token) = @_;
1515: my $currentstring = '';
1516: if ($target eq 'web') {
1517: $currentstring .= $token->[2];
1518: } elsif ($target eq 'tex') {
1519: $currentstring=&Apache::lonxml::endredirection();
1520: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1521: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1522: $currentstring=~s/(\S)\s*$/$1\}/;
1523: }
1524: return $currentstring;
1525: }
1526:
1527: #-- <ul> tag (end tag required)
1528: sub start_ul {
1529: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1530: my $currentstring = '';
1531: if ($target eq 'web') {
1532: $currentstring = $token->[4];
1533: } elsif ($target eq 'tex') {
1534: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1535: if ($TeXtype eq 'disc') {
1536: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1537: \renewcommand{\labelitemii}{$\bullet$}
1538: \renewcommand{\labelitemiii}{$\bullet$}
1539: \renewcommand{\labelitemiv}{$\bullet$}';
1540: } elsif ($TeXtype eq 'circle') {
1541: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1542: \renewcommand{\labelitemii}{$\circ$}
1543: \renewcommand{\labelitemiii}{$\circ$}
1544: \renewcommand{\labelitemiv}{$\circ$}';
1545: } elsif ($TeXtype eq 'square') {
1546: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1547: \renewcommand{\labelitemii}{$\diamond$}
1548: \renewcommand{\labelitemiii}{$\diamond$}
1549: \renewcommand{\labelitemiv}{$\diamond$}';
1550: }
1551: $currentstring .= '\begin{itemize}';
1552: }
1553: return $currentstring;
1554: }
1555:
1556: sub end_ul {
1557: my ($target,$token) = @_;
1558: my $currentstring = '';
1559: if ($target eq 'web') {
1560: $currentstring = $token->[2];
1561: } elsif ($target eq 'tex') {
1562: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1563: \renewcommand{\labelitemii}{$\bullet$}
1564: \renewcommand{\labelitemiii}{$\bullet$}
1565: \renewcommand{\labelitemiv}{$\bullet$}';
1566: }
1567: return $currentstring;
1568: }
1569:
1570: #-- <menu> tag (end tag required)
1571: sub start_menu {
1572: my ($target,$token) = @_;
1573: my $currentstring = '';
1574: if ($target eq 'web') {
1575: $currentstring = $token->[4];
1576: } elsif ($target eq 'tex') {
1577: $currentstring = " \\begin{itemize} ";
1578: }
1579: return $currentstring;
1580: }
1581:
1582: sub end_menu {
1583: my ($target,$token) = @_;
1584: my $currentstring = '';
1585: if ($target eq 'web') {
1586: $currentstring = $token->[2];
1587: } elsif ($target eq 'tex') {
1588: $currentstring = " \\end{itemize}";
1589: }
1590: return $currentstring;
1591: }
1592:
1593: #-- <dir> tag (end tag required)
1594: sub start_dir {
1595: my ($target,$token) = @_;
1596: my $currentstring = '';
1597: if ($target eq 'web') {
1598: $currentstring = $token->[4];
1599: } elsif ($target eq 'tex') {
1600: $currentstring = " \\begin{itemize} ";
1601: }
1602: return $currentstring;
1603: }
1604:
1605: sub end_dir {
1606: my ($target,$token) = @_;
1607: my $currentstring = '';
1608: if ($target eq 'web') {
1609: $currentstring = $token->[2];
1610: } elsif ($target eq 'tex') {
1611: $currentstring = " \\end{itemize}";
1612: }
1613: return $currentstring;
1614: }
1615:
1616: #-- <ol> tag (end tag required)
1617: sub start_ol {
1618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1619: my $currentstring = '';
1620: if ($target eq 'web') {
1621: $currentstring = $token->[4];
1622: } elsif ($target eq 'tex') {
1623: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1624: if ($type eq '1') {
1625: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1626: \renewcommand{\labelenumii}{\arabic{enumii}.}
1627: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1628: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1629: } elsif ($type eq 'A') {
1630: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1631: \renewcommand{\labelenumii}{\Alph{enumii}.}
1632: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1633: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1634: } elsif ($type eq 'a') {
1635: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1636: \renewcommand{\labelenumii}{\alph{enumii}.}
1637: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1638: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1639: } elsif ($type eq 'i') {
1640: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1641: \renewcommand{\labelenumii}{\roman{enumii}.}
1642: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1643: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1644: } elsif ($type eq 'I') {
1645: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1646: \renewcommand{\labelenumii}{\Roman{enumii}.}
1647: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1648: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1649: }
1650: $currentstring .= '\begin{enumerate}';
1651: }
1652: return $currentstring;
1653: }
1654:
1655: sub end_ol {
1656: my ($target,$token) = @_;
1657: my $currentstring = '';
1658: if ($target eq 'web') {
1659: $currentstring = $token->[2];
1660: } elsif ($target eq 'tex') {
1661: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1662: \renewcommand{\labelenumii}{\arabic{enumii}.}
1663: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1664: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1665: }
1666: return $currentstring;
1667: }
1668:
1669: #-- <dl> tag (end tag required)
1670: sub start_dl {
1671: my ($target,$token) = @_;
1672: my $currentstring = '';
1673: if ($target eq 'web') {
1674: $currentstring = $token->[4];
1675: } elsif ($target eq 'tex') {
1676: $currentstring = '\begin{description}';
1677: @Apache::londefdef::description=();
1678: $Apache::londefdef::DD_redirection=0;
1679: $Apache::londefdef::DT_redirection=0;
1680: }
1681: return $currentstring;
1682: }
1683:
1684: sub end_dl {
1685: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1686: my $currentstring = '';
1687: if ($target eq 'web') {
1688: $currentstring = $token->[2];
1689: } elsif ($target eq 'tex') {
1690: if ($Apache::londefdef::DT_redirection) {
1691: my $data=&item_cleanup;
1692: push @Apache::londefdef::description,'\item['.$data.']';
1693: $Apache::londefdef::DT_redirection=0;
1694: } elsif ($Apache::londefdef::DD_redirection) {
1695: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1696: }
1697: foreach my $element (@Apache::londefdef::description) {
1698: $currentstring.=' '.$element.' ';
1699: }
1700: @Apache::londefdef::description=();
1701: $currentstring.='\end{description}';
1702: }
1703: return $currentstring;
1704: }
1705:
1706: #-- <dt> tag (end tag optional)
1707: sub start_dt {
1708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1709: my $currentstring='';
1710: if ($target eq 'web') {
1711: $currentstring = $token->[4];
1712: } elsif ($target eq 'tex') {
1713: if ($Apache::londefdef::DT_redirection) {
1714: my $data=&item_cleanup;
1715: push @Apache::londefdef::description,'\item['.$data.']';
1716: $Apache::londefdef::DT_redirection=0;
1717: } elsif ($Apache::londefdef::DD_redirection) {
1718: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1719: $Apache::londefdef::DD_redirection=0;
1720: }
1721: &Apache::lonxml::startredirection();
1722: $Apache::londefdef::DT_redirection=1;
1723: }
1724: return $currentstring;
1725: }
1726:
1727: sub end_dt {
1728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1729: my $currentstring = '';
1730: if ($target eq 'web') {
1731: $currentstring = $token->[2];
1732: } elsif ($target eq 'tex') {
1733: my $data=&item_cleanup;
1734: push @Apache::londefdef::description,'\item['.$data.']';
1735: $Apache::londefdef::DT_redirection=0;
1736: }
1737: return $currentstring;
1738: }
1739:
1740: sub item_cleanup {
1741: my $item=&Apache::lonxml::endredirection();
1742: $item=~s/\\begin{center}//g;
1743: $item=~s/\\end{center}//g;
1744: return $item;
1745: }
1746:
1747: #-- <dd> tag (end tag optional)
1748: sub start_dd {
1749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1750: my $currentstring = '';
1751: if ($target eq 'web') {
1752: $currentstring = $token->[4];
1753: } elsif ($target eq 'tex') {
1754: if ($Apache::londefdef::DT_redirection) {
1755: my $data=&item_cleanup;
1756: push @Apache::londefdef::description,'\item['.$data.']';
1757: $Apache::londefdef::DT_redirection=0;
1758: }
1759: $Apache::londefdef::DD_redirection=1;
1760: &Apache::lonxml::startredirection();
1761: }
1762: return $currentstring;
1763: }
1764:
1765: sub end_dd {
1766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1767: my $currentstring = '';
1768: if ($target eq 'web') {
1769: $currentstring = $token->[2];
1770: } elsif ($target eq 'tex') {
1771: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1772: $Apache::londefdef::DD_redirection=0;
1773: }
1774: return $currentstring;
1775: }
1776:
1777: #-- <table> tag (end tag required)
1778: #list of supported attributes: border,width,TeXwidth
1779: sub start_table {
1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1781: my ($textwidth,$currentstring)=('','');
1782: if ($target eq 'web') {
1783: $currentstring = $token->[4];
1784: } elsif ($target eq 'tex') {
1785: my $aa = {};
1786: push @Apache::londefdef::table, $aa;
1787: $Apache::londefdef::table[-1]{'row_number'} = -1;
1788: #table's width
1789: #default coincides with text line length
1790: if ($#Apache::londefdef::table==0) {
1791: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1792: $textwidth=~/(\d+\.?\d*)/;
1793: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1794: } else {
1795: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1796: #the maximum width of nested table is determined by LATeX width of parent cell
1797: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1798: } else {
1799: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1800: my $textwidth=$Apache::londefdef::table[-2]{'width'};
1801: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1802: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1803: }
1804: }
1805: }
1806: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1807: if (not defined $TeXwidth) {
1808: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1809: if ($htmlwidth=~/%/) {
1810: $Apache::londefdef::table[-1]{'percent'}=1;
1811: $htmlwidth=~/(\d+)/;
1812: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1813: } else {
1814: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1815: }
1816: } elsif ($TeXwidth=~/%/) {
1817: $Apache::londefdef::table[-1]{'percent'}=1;
1818: $TeXwidth=~/(\d+)/;
1819: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1820: } else {
1821: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1822: }
1823: #table's border
1824: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1825: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1826: unless (defined $border) { $border = 0; }
1827: if ($border) {
1828: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1829: $Apache::londefdef::table[-1]{'vinc'} = '&';
1830: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1831: } else {
1832: $Apache::londefdef::table[-1]{'hinc'} = '';
1833: $Apache::londefdef::table[-1]{'vinc'} = '&';
1834: $Apache::londefdef::table[-1]{'vvinc'} = '';
1835: }
1836: if ($#Apache::londefdef::table==0) {
1837: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1838: }
1839: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1840: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1841: $Apache::londefdef::table[-1]{'objectlen'}=[];
1842: $Apache::londefdef::table[-1]{'maxlen'}=[];
1843: $Apache::londefdef::table[-1]{'minlen'}=[];
1844: $Apache::londefdef::table[-1]{'content'}=[];
1845: $Apache::londefdef::table[-1]{'align'}=[];
1846: $currentstring='\keephidden{NEW TABLE ENTRY}';
1847: }
1848: return $currentstring;
1849: }
1850:
1851: sub end_table {
1852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1853: my $currentstring = '';
1854: if ($target eq 'web') {
1855: $currentstring = $token->[2];
1856: } elsif ($target eq 'tex') {
1857: my $inmemory = '';
1858: my $output = '';
1859: my $WARNING='';
1860: #width of columns from TeXwidth attributes
1861: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1862: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1863: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1864: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1865: }
1866: }
1867: }
1868: #free space and number of empty columns
1869: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1870: ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
1871: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1872: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1873: $empty_columns++;
1874: } else {
1875: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1876: }
1877: }
1878: #boundaries for contents columns
1879: my @min_len=();#columns can not be narrower
1880: my @max_len=();#maximum length of column
1881: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1882: my ($localmin,$localmax)=(0,0);
1883: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1884: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1885: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1886: }
1887: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1888: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1889: }
1890: }
1891: push @min_len, $localmin;
1892: push @max_len, $localmax;
1893: }
1894: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1895: my $localmin=0,;
1896: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1897: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1898: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1899: }
1900: }
1901: if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
1902: if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
1903: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1904: $min_len[$jn]=0;
1905: $max_len[$jn]=0;
1906: }
1907: }
1908: #final adjustment of column width
1909: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1910: my @adjust=();
1911: #step 1. adjustment by maximum value
1912: my $space_neeeded=0;
1913: for (my $jn=0;$jn<=$#max_len;$jn++) {
1914: $space_neeeded=$space_neeeded+$max_len[$jn];
1915: }
1916: if ($space_neeeded<=$available_space) {
1917: for (my $jn=0;$jn<=$#max_len;$jn++) {
1918: if ($fwidth[$jn]==0) {
1919: $fwidth[$jn]=$max_len[$jn];
1920: }
1921: }
1922: } else {
1923: #step 2. adjustment by minimum value (estimation)
1924: $space_neeeded=0;
1925: for (my $jn=0;$jn<=$#min_len;$jn++) {
1926: $space_neeeded+=$min_len[$jn];
1927: }
1928: if ($space_neeeded>$available_space) {
1929: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1930: for (my $jn=0;$jn<=$#max_len;$jn++) {
1931: if ($fwidth[$jn]==0) {
1932: $fwidth[$jn]=$min_len[$jn];
1933: }
1934: }
1935: } else {
1936: #step 3. adjustment over minimal + corrections
1937: my $enlarge_coef=$available_space/$space_neeeded;
1938: my $acsessive=0;
1939: for (my $jn=0;$jn<=$#min_len;$jn++) {
1940: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1941: if ($adjust[$jn]>$max_len[$jn]) {
1942: $fwidth[$jn]=$max_len[$jn];
1943: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1944: $adjust[$jn]=0;
1945: }
1946: }
1947: if ($acsessive>0) {
1948: #we have an excess of space and can redistribute it
1949: my $notempty_columns=0;
1950: for (my $jn=0;$jn<=$#min_len;$jn++) {
1951: if ($adjust[$jn]!=0) {
1952: $notempty_columns++;
1953: }
1954: }
1955: my $per_column=$acsessive/$notempty_columns;
1956: for (my $jn=0;$jn<=$#min_len;$jn++) {
1957: if ($adjust[$jn]!=0) {
1958: $adjust[$jn]+=$per_column;
1959: $fwidth[$jn]=$adjust[$jn];
1960: }
1961: }
1962: }
1963: }
1964: }
1965: #recalculation for the use of all available width if width is defined in %
1966: if ($Apache::londefdef::table[-1]{'percent'}==1) {
1967: my $current=0;
1968: for (my $i=0;$i<=$#fwidth;$i++) {
1969: $current+=$fwidth[$i];
1970: }
1971: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1972: for (my $i=0;$i<=$#fwidth;$i++) {
1973: $fwidth[$i]*=$coef;
1974: }
1975: }
1976: #removing of empty columns if allowed
1977: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1978: if ($permission eq 'yes') {
1979: my @cleaned_table=();
1980: my @cleaned_header=();
1981: my $colind=0;
1982: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1983: if ($fwidth[$jn]!=0) {
1984: #we need to copy column
1985: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1986: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
1987: $cleaned_header[$colind]=$fwidth[$jn];
1988: }
1989: $colind++;
1990: }
1991: }
1992: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
1993: @fwidth=@cleaned_header;
1994: }
1995: #construct header of the table
1996: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1997: for (my $in=0;$in<=$#fwidth;$in++) {
1998: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
1999: }
2000: $header_of_table .= '}';
2001: #fill the table
2002: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2003: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2004: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2005: $output.='\begin{center}';
2006: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2007: $output.=' \hfill \llap{'
2008: }
2009: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2010: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2011: $output.='\end{center}';
2012: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2013: $output.='} ';
2014: }
2015: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2016: }
2017: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2018: }
2019: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2020: if ($#Apache::londefdef::table > 0) {
2021: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2022: pop @Apache::londefdef::table;
2023: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2024: } else {
2025: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2026: pop @Apache::londefdef::table;
2027: undef @Apache::londefdef::table;
2028: }
2029: }
2030: return $currentstring;
2031: }
2032:
2033: #-- <tr> tag (end tag optional)
2034: sub start_tr {
2035: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2036: my $currentstring = '';
2037: if ($target eq 'web') {
2038: $currentstring = $token->[4];
2039: } elsif ($target eq 'tex') {
2040: $Apache::londefdef::table[-1]{'row_number'}++;
2041: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2042: if ($alignchar ne '') {
2043: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2044: } else {
2045: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2046: }
2047: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2048: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2049: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2050: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2051: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2052: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2053: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2054: }
2055: return $currentstring;
2056: }
2057:
2058: sub end_tr {
2059: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2060: my $currentstring = '';
2061: if ($target eq 'web') {
2062: $currentstring = $token->[2];
2063: } elsif ($target eq 'tex') {
2064: if ($Apache::londefdef::TD_redirection) {
2065: &end_td_tex($parstack,$parser,$safeeval);
2066: }
2067: }
2068: return $currentstring;
2069: }
2070:
2071: #-- <td> tag (end tag optional)
2072: sub start_td {
2073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2074: my $currentstring = '';
2075: if ($target eq 'web') {
2076: $currentstring = $token->[4];
2077: } elsif ($target eq 'tex') {
2078: $Apache::londefdef::TD_redirection = 1;
2079: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2080: }
2081: return $currentstring;
2082: }
2083:
2084: sub tag_check {
2085: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2086: my @ar=@$parstack;
2087: for (my $i=$#ar-1;$i>=0;$i--) {
2088: if (lc($$tagstack[$i]) eq $good_tag) {
2089: &start_td_tex($parstack,$parser,$safeeval);
2090: last;
2091: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2092: splice @ar, $i+1;
2093: &end_td_tex(\@ar,$parser,$safeeval);
2094: &start_td_tex($parstack,$parser,$safeeval);
2095: last;
2096: }
2097: }
2098: return '';
2099: }
2100:
2101: sub start_td_tex {
2102: my ($parstack,$parser,$safeeval) = @_;
2103: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2104: if ($alignchar eq '') {
2105: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2106: }
2107: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2108: $Apache::londefdef::table[-1]{'counter_columns'}++;
2109: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2110: if (defined $TeXwidth) {
2111: my $current_length=&recalc($TeXwidth);
2112: $current_length=~/(\d+\.?\d*)/;
2113: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2114: }
2115: &Apache::lonxml::startredirection();
2116: return '';
2117: }
2118:
2119: sub end_td_tex {
2120: my ($parstack,$parser,$safeeval) = @_;
2121: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2122: my $data=&Apache::lonxml::endredirection();
2123: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2124: if (defined $TeXwidth) {
2125: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2126: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2127: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2128: } else {
2129: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2130: my $garbage_data=$data;
2131: my $fwidth=0;
2132: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2133: my $current_length=&recalc($1);
2134: $current_length=~/(\d+\.?\d*)/;
2135: if ($fwidth<$1) {$fwidth=$1;}
2136: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2137: }
2138: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2139: my $current_length=$1;
2140: if ($fwidth<$current_length) {$fwidth=$current_length;}
2141: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2142: }
2143: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2144: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2145: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2146: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2147: } else {
2148: $data=~s/^\s+(\S.*)/$1/;
2149: $data=~s/(.*\S)\s+$/$1/;
2150: $data=~s/(\s)+/$1/;
2151: my ($current_length,$min_length)=(0,0);
2152: if ($data=~/\\vskip/) {
2153: my $newdata=$data;
2154: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2155: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2156: foreach my $elementdata (@newdata) {
2157: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2158: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2159: my @words=split(/ /,$elementdata);
2160: foreach my $word (@words) {
2161: my $lengthword=2.5*&LATEX_length($word);
2162: if ($min_length<$lengthword) {$min_length=$lengthword;}
2163: }
2164: }
2165: } else {
2166: $current_length=2.5*&LATEX_length($data);
2167: my @words=split(/ /,$data);
2168: foreach my $word (@words) {
2169: my $lengthword=2.5*&LATEX_length($word);
2170: if ($min_length<$lengthword) {$min_length=$lengthword;}
2171: }
2172: }
2173: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2174: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2175: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2176: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2177: }
2178: }
2179: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2180: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2181: }
2182: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2183: return'';
2184: }
2185:
2186: sub end_td {
2187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2188: my $currentstring = '';
2189: if ($target eq 'web') {
2190: $currentstring = $token->[2];
2191: } elsif ($target eq 'tex') {
2192: $Apache::londefdef::TD_redirection =0;
2193: &end_td_tex($parstack,$parser,$safeeval);
2194: }
2195: return $currentstring;
2196: }
2197:
2198: #-- <th> tag (end tag optional)
2199: sub start_th {
2200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2201: my $currentstring = '';
2202: if ($target eq 'web') {
2203: $currentstring = $token->[4];
2204: } elsif ($target eq 'tex') {
2205: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2206: if ($what_to_push eq '') {
2207: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2208: }
2209: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2210: $Apache::londefdef::table[-1]{'counter_columns'}++;
2211: &Apache::lonxml::startredirection();
2212: }
2213: return $currentstring;
2214: }
2215:
2216: sub end_th {
2217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2218: my $currentstring = '';
2219: if ($target eq 'web') {
2220: $currentstring = $token->[2];
2221: } elsif ($target eq 'tex') {
2222: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2223: my $data=&Apache::lonxml::endredirection();
2224: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2225: if (defined $TeXwidth) {
2226: my $current_length=&recalc($TeXwidth);
2227: $current_length=~/(\d+)/;
2228: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2229: $Apache::londefdef::table[-1]{'length'} .= '0,';
2230: } else {
2231: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2232: my $current_length=&recalc($1);
2233: $current_length=~/(\d+)/;
2234: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2235: $Apache::londefdef::table[-1]{'length'} .= '0,';
2236: } else {
2237: $data=~/^\s*(\S.*)/;
2238: $data=$1;
2239: $data=~/(.*\S)\s*$/;
2240: $data=$1;
2241: my $current_length=2*length($data);
2242: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2243: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2244: }
2245: }
2246: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2247: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2248: }
2249: $data='\textbf{'.$data.'}';
2250: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2251: }
2252: return $currentstring;
2253: }
2254: #-- <img> tag (end tag forbidden)
2255: sub start_img {
2256: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2257: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2258: undef,1);
2259: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2260: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2261: &Apache::lonnet::logthis("inside was $inside");
2262: return '';
2263: }
2264: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2265: my $currentstring = '';
2266: my $scaling = .3;
2267: if ($target eq 'web') {
2268: if ($ENV{'browser.imagesuppress'} ne 'on') {
2269: $currentstring.= $token->[4];
2270: } else {
2271: my $alttag= &Apache::lonxml::get_param
2272: ('alt',$parstack,$safeeval,undef,1);
2273: unless ($alttag) {
2274: $alttag=&Apache::lonmeta::alttag
2275: ($Apache::lonxml::pwd[-1],$src);
2276: }
2277: $currentstring.='[IMAGE: '.$alttag.']';
2278: }
2279: } elsif ($target eq 'tex') {
2280: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2281: #if uploaded restore the path
2282: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2283: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2284: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2285: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2286: }
2287: #if original gif/jpg/png file exist do following:
2288: if (-e $src) {
2289: #what is the image size?
2290: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2291: my ($file,$path)=&file_path($src);
2292: my $newsrc = $src;
2293: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2294: $file=~s/\.(gif|jpg|png)$/.eps/i;
2295: #where can we find the picture?
2296: if (-e $newsrc) {
2297: #eps counterpart for image exist
2298: if ($path) {
2299: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2300: }
2301: } else {
2302: #there is no eps counterpart for image - check for ps one
2303: $newsrc =~ s/\.eps$/\.ps/;
2304: if (-e $newsrc) {
2305: #ps counterpart for image exist
2306: $file =~ s/\.eps$/\.ps/;
2307: if ($path) {
2308: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2309: }
2310: } else {
2311: #care about eps dynamical generation
2312: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2313: }
2314: }
2315: } else {
2316: #original image file doesn't exist so check the alt attribute
2317: my $alt =
2318: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2319: unless ($alt) {
2320: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2321: }
2322:
2323: if ($alt) {
2324: $currentstring .= ' '.$alt.' ';
2325: } else {
2326: #<allow> tag will care about replication
2327: }
2328: }
2329: } elsif ($target eq 'edit') {
2330: $currentstring .=&Apache::edit::tag_start($target,$token);
2331: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2332: &Apache::edit::browse('src',undef,'alt').' '.
2333: &Apache::edit::search('src',undef,'alt').'<br />';
2334: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2335: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2336: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2337: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2338: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2339: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2340: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2341: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2342: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2343: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2344: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2345: if ($width) { $currentstring.=' width="'.$width.'" '; }
2346: if ($height) { $currentstring.=' height="'.$height.'" '; }
2347: $currentstring .= ' />';
2348: } elsif ($target eq 'modified') {
2349: my ($osrc,$owidth,$oheight)=
2350: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2351: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2352: $safeeval,'src','alt',
2353: 'TeXwidth','TeXheight',
2354: 'width','height');
2355: my ($nsrc,$nwidth,$nheight)=
2356: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2357: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2358: &image_replication($loc);
2359: my ($iwidth,$iheight);
2360: if (-e $loc) {
2361: my $image = Image::Magick->new;
2362: $image->Read($loc);
2363: ($iwidth, $iheight) = ($image->Get('width'),
2364: $image->Get('height'));
2365: }
2366: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2367: # changed image or no size specified,
2368: # if they didn't explicitly change the
2369: # width or height use the ones from the image
2370: if ($iwidth && $iheight) {
2371: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2372: $token->[2]{'width'} = $iwidth;$ctag=1;
2373: }
2374: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2375: $token->[2]{'height'}=$iheight;$ctag=1;
2376: }
2377: }
2378: }
2379: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2380: # if we don't have a width or height
2381: if ($iwidth && $cwidth && !$cheight) {
2382: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2383: }
2384: if ($iheight && $cheight && !$cwidth) {
2385: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2386: }
2387: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2388: }
2389: return $currentstring;
2390: }
2391:
2392: sub end_img {
2393: my ($target,$token) = @_;
2394: my $currentstring = '';
2395: if ($target eq 'web') {
2396: $currentstring = $token->[2];
2397: } elsif ($target eq 'tex') {
2398: $currentstring = '';
2399: }
2400: return $currentstring;
2401: }
2402:
2403: #-- <applet> tag (end tag required)
2404: sub start_applet {
2405: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2406:
2407: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2408: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2409:
2410: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2411: undef,1);
2412: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2413:
2414: my $currentstring = '';
2415: if ($target eq 'web') {
2416: if ($ENV{'browser.appletsuppress'} ne 'on') {
2417: $currentstring = $token->[4];
2418: } else {
2419: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2420: $safeeval,undef,1);
2421: unless ($alttag) {
2422: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2423: $code);
2424: }
2425: $currentstring='[APPLET: '.$alttag.']';
2426: }
2427: } elsif ($target eq 'tex') {
2428: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2429: $safeeval,undef,1);
2430: unless ($alttag) {
2431: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2432: undef,1);
2433: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2434: $code);
2435: }
2436: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2437: '.}\end{center}';
2438: }
2439: return $currentstring;
2440: }
2441:
2442: sub end_applet {
2443: my ($target,$token) = @_;
2444: my $currentstring = '';
2445: if ($target eq 'web') {
2446: $currentstring = $token->[2];
2447: } elsif ($target eq 'tex') {
2448: }
2449: return $currentstring;
2450: }
2451:
2452: #-- <embed> tag (end tag optional/required)
2453: sub start_embed {
2454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2455: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2456: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2457: my $currentstring = '';
2458: if ($target eq 'web') {
2459: if ($ENV{'browser.embedsuppress'} ne 'on') {
2460: $currentstring = $token->[4];
2461: } else {
2462: my $alttag=&Apache::lonxml::get_param
2463: ('alt',$parstack,$safeeval,undef,1);
2464: unless ($alttag) {
2465: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2466: }
2467: $currentstring='[EMBED: '.$alttag.']';
2468: }
2469: } elsif ($target eq 'tex') {
2470: }
2471: return $currentstring;
2472: }
2473:
2474: sub end_embed {
2475: my ($target,$token) = @_;
2476: my $currentstring = '';
2477: if ($target eq 'web') {
2478: $currentstring = $token->[2];
2479: } elsif ($target eq 'tex') {
2480: }
2481: return $currentstring;
2482: }
2483:
2484: #-- <param> tag (end tag forbidden)
2485: sub start_param {
2486: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2487: if (&Apache::lonxml::get_param
2488: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2489: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2490: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2491: }
2492: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2493: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2494: my $currentstring = '';
2495: if ($target eq 'web') {
2496: $currentstring = $token->[4];
2497: } elsif ($target eq 'tex') {
2498: }
2499: return $currentstring;
2500: }
2501:
2502: sub end_param {
2503: my ($target,$token) = @_;
2504: my $currentstring = '';
2505: if ($target eq 'web') {
2506: $currentstring = $token->[2];
2507: } elsif ($target eq 'tex') {
2508: }
2509: return $currentstring;
2510: }
2511:
2512: #-- <allow> tag
2513: sub start_allow {
2514: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2515: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2516: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2517: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2518: &Apache::lonnet::clutter($src);
2519: &image_replication($src);
2520: my $result;
2521: if ($target eq 'edit') {
2522: $result .=&Apache::edit::tag_start($target,$token);
2523: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2524: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2525: } elsif ($target eq 'modified') {
2526: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2527: $safeeval,'src');
2528: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2529: }
2530: return $result;
2531: }
2532:
2533: sub end_allow {
2534: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2535: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2536: return '';
2537: }
2538:
2539: #-- Frames (end tag required)
2540: #-- <frameset>
2541: sub start_frameset {
2542: my ($target,$token) = @_;
2543: my $currentstring = '';
2544: if ($target eq 'web') {
2545: if (!$Apache::lonxml::registered &&
2546: $ENV{'request.state'} eq 'published') {
2547: $currentstring.='<head>'.
2548: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2549: }
2550: my $onLoad='';
2551: foreach my $key (keys(%{$token->[2]})) {
2552: if ($key =~ /^onload$/i) {
2553: $onLoad.=$token->[2]->{$key}.';';
2554: delete($token->[2]->{$key});
2555: }
2556: }
2557: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2558: my $onUnload='';
2559: foreach my $key (keys(%{$token->[2]})) {
2560: if ($key =~ /^onunload$/i) {
2561: $onUnload.=$token->[2]->{$key}.';';
2562: delete($token->[2]->{$key});
2563: }
2564: }
2565: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2566: ';'.$onUnload;
2567:
2568: $currentstring .= '<'.$token->[1];
2569: foreach (keys %{$token->[2]}) {
2570: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2571: }
2572: $currentstring.='>';
2573: }
2574: return $currentstring;
2575: }
2576:
2577: sub end_frameset {
2578: my ($target,$token) = @_;
2579: my $currentstring = '';
2580: if ($target eq 'web') {
2581: $currentstring = $token->[2];
2582: }
2583: return $currentstring;
2584: }
2585:
2586: #-- <xmp> (end tag required)
2587: sub start_xmp {
2588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2589: my $currentstring = '';
2590: if ($target eq 'web') {
2591: $currentstring .= $token->[4];
2592: } elsif ($target eq 'tex') {
2593: $currentstring .= '\begin{verbatim}';
2594: }
2595: return $currentstring;
2596: }
2597:
2598: sub end_xmp {
2599: my ($target,$token) = @_;
2600: my $currentstring = '';
2601: if ($target eq 'web') {
2602: $currentstring .= $token->[2];
2603: } elsif ($target eq 'tex') {
2604: $currentstring .= '\end{verbatim}';
2605: }
2606: return $currentstring;
2607: }
2608:
2609: #-- <pre> (end tag required)
2610: sub start_pre {
2611: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2612: my $currentstring = '';
2613: if ($target eq 'web') {
2614: $currentstring .= $token->[4];
2615: } elsif ($target eq 'tex') {
2616: $currentstring .= '\begin{verbatim}';
2617: }
2618: return $currentstring;
2619: }
2620:
2621: sub end_pre {
2622: my ($target,$token) = @_;
2623: my $currentstring = '';
2624: if ($target eq 'web') {
2625: $currentstring .= $token->[2];
2626: } elsif ($target eq 'tex') {
2627: $currentstring .= '\end{verbatim}';
2628: }
2629: return $currentstring;
2630: }
2631:
2632: #-- <insert>
2633: sub start_insert {
2634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2635: my $currentstring = '';
2636: if ($target eq 'web') {
2637: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2638: $currentstring .= '<b>'.$display.'</b>';;
2639: }
2640: return $currentstring;
2641: }
2642:
2643: sub end_insert {
2644: my ($target,$token) = @_;
2645: my $currentstring = '';
2646: if ($target eq 'web') {
2647: $currentstring .= '';
2648: }
2649: return $currentstring;
2650: }
2651:
2652: #-- <externallink>
2653: sub start_externallink {
2654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2655: my $currentstring = '';
2656: if ($target eq 'web') {
2657: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2658: $currentstring .= '<b>'.$display.'</b>';;
2659: }
2660: return $currentstring;
2661: }
2662:
2663: sub end_externallink {
2664: my ($target,$token) = @_;
2665: my $currentstring = '';
2666: if ($target eq 'web') {
2667: $currentstring .= '';
2668: }
2669: return $currentstring;
2670: }
2671:
2672: #-- <blankspace heigth="">
2673: sub start_blankspace {
2674: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2675: my $currentstring = '';
2676: if ($target eq 'tex') {
2677: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2678: $currentstring .= '\vskip '.$howmuch.' ';
2679: }
2680: return $currentstring;
2681: }
2682:
2683: sub end_blankspace {
2684: my ($target,$token) = @_;
2685: my $currentstring = '';
2686: if ($target eq 'tex') {
2687: $currentstring .= '';
2688: }
2689: return $currentstring;
2690: }
2691:
2692: #-- <abbr> tag (end tag required)
2693: sub start_abbr {
2694: my ($target,$token) = @_;
2695: my $currentstring = '';
2696: if ($target eq 'web') {
2697: $currentstring = $token->[4];
2698: }
2699: return $currentstring;
2700: }
2701:
2702: sub end_abbr {
2703: my ($target,$token) = @_;
2704: my $currentstring = '';
2705: if ($target eq 'web') {
2706: $currentstring = $token->[2];
2707: }
2708: return $currentstring;
2709: }
2710:
2711: #-- <acronym> tag (end tag required)
2712: sub start_acronym {
2713: my ($target,$token) = @_;
2714: my $currentstring = '';
2715: if ($target eq 'web') {
2716: $currentstring = $token->[4];
2717: }
2718: return $currentstring;
2719: }
2720:
2721: sub end_acronym {
2722: my ($target,$token) = @_;
2723: my $currentstring = '';
2724: if ($target eq 'web') {
2725: $currentstring = $token->[2];
2726: }
2727: return $currentstring;
2728: }
2729:
2730: #-- <area> tag (end tag forbidden)
2731: sub start_area {
2732: my ($target,$token) = @_;
2733: my $currentstring = '';
2734: if ($target eq 'web') {
2735: $currentstring = $token->[4];
2736: }
2737: return $currentstring;
2738: }
2739:
2740: sub end_area {
2741: my ($target,$token) = @_;
2742: my $currentstring = '';
2743: if ($target eq 'web') {
2744: $currentstring = $token->[2];
2745: }
2746: return $currentstring;
2747: }
2748:
2749: #-- <base> tag (end tag forbidden)
2750: sub start_base {
2751: my ($target,$token) = @_;
2752: my $currentstring = '';
2753: if ($target eq 'web') {
2754: $currentstring = $token->[4];
2755: }
2756: return $currentstring;
2757: }
2758:
2759: sub end_base {
2760: my ($target,$token) = @_;
2761: my $currentstring = '';
2762: if ($target eq 'web') {
2763: $currentstring = $token->[2];
2764: }
2765: return $currentstring;
2766: }
2767:
2768: #-- <bdo> tag (end tag required)
2769: sub start_bdo {
2770: my ($target,$token) = @_;
2771: my $currentstring = '';
2772: if ($target eq 'web') {
2773: $currentstring = $token->[4];
2774: }
2775: return $currentstring;
2776: }
2777:
2778: sub end_bdo {
2779: my ($target,$token) = @_;
2780: my $currentstring = '';
2781: if ($target eq 'web') {
2782: $currentstring = $token->[2];
2783: }
2784: return $currentstring;
2785: }
2786:
2787: #-- <bgsound> tag (end tag optional)
2788: sub start_bgsound {
2789: my ($target,$token) = @_;
2790: my $currentstring = '';
2791: if ($target eq 'web') {
2792: $currentstring = $token->[4];
2793: }
2794: return $currentstring;
2795: }
2796:
2797: sub end_bgsound {
2798: my ($target,$token) = @_;
2799: my $currentstring = '';
2800: if ($target eq 'web') {
2801: $currentstring = $token->[2];
2802: }
2803: return $currentstring;
2804: }
2805:
2806: #-- <blink> tag (end tag required)
2807: sub start_blink {
2808: my ($target,$token) = @_;
2809: my $currentstring = '';
2810: if ($target eq 'web') {
2811: $currentstring = $token->[4];
2812: }
2813: return $currentstring;
2814: }
2815:
2816: sub end_blink {
2817: my ($target,$token) = @_;
2818: my $currentstring = '';
2819: if ($target eq 'web') {
2820: $currentstring = $token->[2];
2821: }
2822: return $currentstring;
2823: }
2824:
2825: #-- <blockquote> tag (end tag required)
2826: sub start_blockquote {
2827: my ($target,$token) = @_;
2828: my $currentstring = '';
2829: if ($target eq 'web') {
2830: $currentstring = $token->[4];
2831: }
2832: return $currentstring;
2833: }
2834:
2835: sub end_blockquote {
2836: my ($target,$token) = @_;
2837: my $currentstring = '';
2838: if ($target eq 'web') {
2839: $currentstring = $token->[2];
2840: }
2841: return $currentstring;
2842: }
2843:
2844: #-- <button> tag (end tag required)
2845: sub start_button {
2846: my ($target,$token) = @_;
2847: my $currentstring = '';
2848: if ($target eq 'web') {
2849: $currentstring = $token->[4];
2850: }
2851: return $currentstring;
2852: }
2853:
2854: sub end_button {
2855: my ($target,$token) = @_;
2856: my $currentstring = '';
2857: if ($target eq 'web') {
2858: $currentstring = $token->[2];
2859: }
2860: return $currentstring;
2861: }
2862:
2863: #-- <caption> tag (end tag required)
2864: sub start_caption {
2865: my ($target,$token) = @_;
2866: my $currentstring = '';
2867: if ($target eq 'web') {
2868: $currentstring = $token->[4];
2869: }
2870: return $currentstring;
2871: }
2872:
2873: sub end_caption {
2874: my ($target,$token) = @_;
2875: my $currentstring = '';
2876: if ($target eq 'web') {
2877: $currentstring = $token->[2];
2878: }
2879: return $currentstring;
2880: }
2881:
2882: #-- <col> tag (end tag forbdden)
2883: sub start_col {
2884: my ($target,$token) = @_;
2885: my $currentstring = '';
2886: if ($target eq 'web') {
2887: $currentstring = $token->[4];
2888: }
2889: return $currentstring;
2890: }
2891:
2892: sub end_col {
2893: my ($target,$token) = @_;
2894: my $currentstring = '';
2895: if ($target eq 'web') {
2896: $currentstring = $token->[2];
2897: }
2898: return $currentstring;
2899: }
2900:
2901: #-- <colgroup> tag (end tag optional)
2902: sub start_colgroup {
2903: my ($target,$token) = @_;
2904: my $currentstring = '';
2905: if ($target eq 'web') {
2906: $currentstring = $token->[4];
2907: }
2908: return $currentstring;
2909: }
2910:
2911: sub end_colgroup {
2912: my ($target,$token) = @_;
2913: my $currentstring = '';
2914: if ($target eq 'web') {
2915: $currentstring = $token->[2];
2916: }
2917: return $currentstring;
2918: }
2919:
2920: #-- <del> tag (end tag required)
2921: sub start_del {
2922: my ($target,$token) = @_;
2923: my $currentstring = '';
2924: if ($target eq 'web') {
2925: $currentstring = $token->[4];
2926: }
2927: return $currentstring;
2928: }
2929:
2930: sub end_del {
2931: my ($target,$token) = @_;
2932: my $currentstring = '';
2933: if ($target eq 'web') {
2934: $currentstring = $token->[2];
2935: }
2936: return $currentstring;
2937: }
2938:
2939: #-- <fieldset> tag (end tag required)
2940: sub start_fieldset {
2941: my ($target,$token) = @_;
2942: my $currentstring = '';
2943: if ($target eq 'web') {
2944: $currentstring = $token->[4];
2945: }
2946: return $currentstring;
2947: }
2948:
2949: sub end_fieldset {
2950: my ($target,$token) = @_;
2951: my $currentstring = '';
2952: if ($target eq 'web') {
2953: $currentstring = $token->[2];
2954: }
2955: return $currentstring;
2956: }
2957:
2958: #-- <frame> tag (end tag forbidden)
2959: sub start_frame {
2960: my ($target,$token) = @_;
2961: my $currentstring = '';
2962: if ($target eq 'web') {
2963: $currentstring = $token->[4];
2964: }
2965: return $currentstring;
2966: }
2967:
2968: sub end_frame {
2969: my ($target,$token) = @_;
2970: my $currentstring = '';
2971: if ($target eq 'web') {
2972: $currentstring = $token->[2];
2973: }
2974: return $currentstring;
2975: }
2976:
2977: #-- <iframe> tag (end tag required)
2978: sub start_iframe {
2979: my ($target,$token) = @_;
2980: my $currentstring = '';
2981: if ($target eq 'web') {
2982: $currentstring = $token->[4];
2983: }
2984: return $currentstring;
2985: }
2986:
2987: sub end_iframe {
2988: my ($target,$token) = @_;
2989: my $currentstring = '';
2990: if ($target eq 'web') {
2991: $currentstring = $token->[2];
2992: }
2993: return $currentstring;
2994: }
2995:
2996: #-- <ins> tag (end tag required)
2997: sub start_ins {
2998: my ($target,$token) = @_;
2999: my $currentstring = '';
3000: if ($target eq 'web') {
3001: $currentstring = $token->[4];
3002: }
3003: return $currentstring;
3004: }
3005:
3006: sub end_ins {
3007: my ($target,$token) = @_;
3008: my $currentstring = '';
3009: if ($target eq 'web') {
3010: $currentstring = $token->[2];
3011: }
3012: return $currentstring;
3013: }
3014:
3015: #-- <isindex> tag (end tag forbidden)
3016: sub start_isindex {
3017: my ($target,$token) = @_;
3018: my $currentstring = '';
3019: if ($target eq 'web') {
3020: $currentstring = $token->[4];
3021: }
3022: return $currentstring;
3023: }
3024:
3025: sub end_isindex {
3026: my ($target,$token) = @_;
3027: my $currentstring = '';
3028: if ($target eq 'web') {
3029: $currentstring = $token->[2];
3030: }
3031: return $currentstring;
3032: }
3033:
3034: #-- <keygen> tag (end tag forbidden)
3035: sub start_keygen {
3036: my ($target,$token) = @_;
3037: my $currentstring = '';
3038: if ($target eq 'web') {
3039: $currentstring = $token->[4];
3040: }
3041: return $currentstring;
3042: }
3043:
3044: sub end_keygen {
3045: my ($target,$token) = @_;
3046: my $currentstring = '';
3047: if ($target eq 'web') {
3048: $currentstring = $token->[2];
3049: }
3050: return $currentstring;
3051: }
3052:
3053: #-- <label> tag
3054: sub start_label {
3055: my ($target,$token) = @_;
3056: my $currentstring = '';
3057: if ($target eq 'web') {
3058: $currentstring = $token->[4];
3059: }
3060: return $currentstring;
3061: }
3062:
3063: sub end_label {
3064: my ($target,$token) = @_;
3065: my $currentstring = '';
3066: if ($target eq 'web') {
3067: $currentstring = $token->[2];
3068: }
3069: return $currentstring;
3070: }
3071:
3072: #-- <layer> tag (end tag required)
3073: sub start_layer {
3074: my ($target,$token) = @_;
3075: my $currentstring = '';
3076: if ($target eq 'web') {
3077: $currentstring = $token->[4];
3078: }
3079: return $currentstring;
3080: }
3081:
3082: sub end_layer {
3083: my ($target,$token) = @_;
3084: my $currentstring = '';
3085: if ($target eq 'web') {
3086: $currentstring = $token->[2];
3087: }
3088: return $currentstring;
3089: }
3090:
3091: #-- <legend> tag (end tag required)
3092: sub start_legend {
3093: my ($target,$token) = @_;
3094: my $currentstring = '';
3095: if ($target eq 'web') {
3096: $currentstring = $token->[4];
3097: }
3098: return $currentstring;
3099: }
3100:
3101: sub end_legend {
3102: my ($target,$token) = @_;
3103: my $currentstring = '';
3104: if ($target eq 'web') {
3105: $currentstring = $token->[2];
3106: }
3107: return $currentstring;
3108: }
3109:
3110: #-- <link> tag (end tag forbidden)
3111: sub start_link {
3112: my ($target,$token) = @_;
3113: my $currentstring = '';
3114: if ($target eq 'web') {
3115: $currentstring = $token->[4];
3116: }
3117: return $currentstring;
3118: }
3119:
3120: sub end_link {
3121: my ($target,$token) = @_;
3122: my $currentstring = '';
3123: if ($target eq 'web') {
3124: $currentstring = $token->[2];
3125: }
3126: return $currentstring;
3127: }
3128:
3129: #-- <marquee> tag (end tag optional)
3130: sub start_marquee {
3131: my ($target,$token) = @_;
3132: my $currentstring = '';
3133: if ($target eq 'web') {
3134: $currentstring = $token->[4];
3135: }
3136: return $currentstring;
3137: }
3138:
3139: sub end_marquee {
3140: my ($target,$token) = @_;
3141: my $currentstring = '';
3142: if ($target eq 'web') {
3143: $currentstring = $token->[2];
3144: }
3145: return $currentstring;
3146: }
3147:
3148: #-- <multicol> tag (end tag required)
3149: sub start_multicol {
3150: my ($target,$token) = @_;
3151: my $currentstring = '';
3152: if ($target eq 'web') {
3153: $currentstring = $token->[4];
3154: }
3155: return $currentstring;
3156: }
3157:
3158: sub end_multicol {
3159: my ($target,$token) = @_;
3160: my $currentstring = '';
3161: if ($target eq 'web') {
3162: $currentstring = $token->[2];
3163: }
3164: return $currentstring;
3165: }
3166:
3167: #-- <nobr> tag (end tag required)
3168: sub start_nobr {
3169: my ($target,$token) = @_;
3170: my $currentstring = '';
3171: if ($target eq 'web') {
3172: $currentstring = $token->[4];
3173: } elsif ($target eq 'tex') {
3174: $currentstring='\mbox{';
3175: }
3176: return $currentstring;
3177: }
3178:
3179: sub end_nobr {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web') {
3183: $currentstring = $token->[2];
3184: } elsif ($target eq 'tex') {
3185: $currentstring='}';
3186: }
3187: return $currentstring;
3188: }
3189:
3190: #-- <noembed> tag (end tag required)
3191: sub start_noembed {
3192: my ($target,$token) = @_;
3193: my $currentstring = '';
3194: if ($target eq 'web') {
3195: $currentstring = $token->[4];
3196: }
3197: return $currentstring;
3198: }
3199:
3200: sub end_noembed {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web') {
3204: $currentstring = $token->[2];
3205: }
3206: return $currentstring;
3207: }
3208:
3209: #-- <noframes> tag (end tag required)
3210: sub start_noframes {
3211: my ($target,$token) = @_;
3212: my $currentstring = '';
3213: if ($target eq 'web') {
3214: $currentstring = $token->[4];
3215: }
3216: return $currentstring;
3217: }
3218:
3219: sub end_noframes {
3220: my ($target,$token) = @_;
3221: my $currentstring = '';
3222: if ($target eq 'web') {
3223: $currentstring = $token->[2];
3224: }
3225: return $currentstring;
3226: }
3227:
3228: #-- <nolayer> tag (end tag required)
3229: sub start_nolayer {
3230: my ($target,$token) = @_;
3231: my $currentstring = '';
3232: if ($target eq 'web') {
3233: $currentstring = $token->[4];
3234: }
3235: return $currentstring;
3236: }
3237:
3238: sub end_nolayer {
3239: my ($target,$token) = @_;
3240: my $currentstring = '';
3241: if ($target eq 'web') {
3242: $currentstring = $token->[2];
3243: }
3244: return $currentstring;
3245: }
3246:
3247: #-- <noscript> tag (end tag required)
3248: sub start_noscript {
3249: my ($target,$token) = @_;
3250: my $currentstring = '';
3251: if ($target eq 'web') {
3252: $currentstring = $token->[4];
3253: }
3254: return $currentstring;
3255: }
3256:
3257: sub end_noscript {
3258: my ($target,$token) = @_;
3259: my $currentstring = '';
3260: if ($target eq 'web') {
3261: $currentstring = $token->[2];
3262: }
3263: return $currentstring;
3264: }
3265:
3266: #-- <object> tag (end tag required)
3267: sub start_object {
3268: my ($target,$token) = @_;
3269: my $currentstring = '';
3270: if ($target eq 'web') {
3271: $currentstring = $token->[4];
3272: }
3273: return $currentstring;
3274: }
3275:
3276: sub end_object {
3277: my ($target,$token) = @_;
3278: my $currentstring = '';
3279: if ($target eq 'web') {
3280: $currentstring = $token->[2];
3281: }
3282: return $currentstring;
3283: }
3284:
3285: #-- <optgroup> tag (end tag required)
3286: sub start_optgroup {
3287: my ($target,$token) = @_;
3288: my $currentstring = '';
3289: if ($target eq 'web') {
3290: $currentstring = $token->[4];
3291: }
3292: return $currentstring;
3293: }
3294:
3295: sub end_optgroup {
3296: my ($target,$token) = @_;
3297: my $currentstring = '';
3298: if ($target eq 'web') {
3299: $currentstring = $token->[2];
3300: }
3301: return $currentstring;
3302: }
3303:
3304: #-- <samp> tag (end tag required)
3305: sub start_samp {
3306: my ($target,$token) = @_;
3307: my $currentstring = '';
3308: if ($target eq 'web') {
3309: $currentstring = $token->[4];
3310: } elsif ($target eq 'tex') {
3311: $currentstring='\texttt{';
3312: }
3313: return $currentstring;
3314: }
3315:
3316: sub end_samp {
3317: my ($target,$token) = @_;
3318: my $currentstring = '';
3319: if ($target eq 'web') {
3320: $currentstring = $token->[2];
3321: } elsif ($target eq 'tex') {
3322: $currentstring='}';
3323: }
3324: return $currentstring;
3325: }
3326:
3327: #-- <server> tag
3328: sub start_server {
3329: my ($target,$token) = @_;
3330: my $currentstring = '';
3331: if ($target eq 'web') {
3332: $currentstring = $token->[4];
3333: }
3334: return $currentstring;
3335: }
3336:
3337: sub end_server {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web') {
3341: $currentstring = $token->[2];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: #-- <spacer> tag (end tag forbidden)
3347: sub start_spacer {
3348: my ($target,$token) = @_;
3349: my $currentstring = '';
3350: if ($target eq 'web') {
3351: $currentstring = $token->[4];
3352: }
3353: return $currentstring;
3354: }
3355:
3356: sub end_spacer {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web') {
3360: $currentstring = $token->[2];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: #-- <span> tag (end tag required)
3366: sub start_span {
3367: my ($target,$token) = @_;
3368: my $currentstring = '';
3369: if ($target eq 'web') {
3370: $currentstring = $token->[4];
3371: }
3372: return $currentstring;
3373: }
3374:
3375: sub end_span {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web') {
3379: $currentstring = $token->[2];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: #-- <tbody> tag (end tag optional)
3385: sub start_tbody {
3386: my ($target,$token) = @_;
3387: my $currentstring = '';
3388: if ($target eq 'web') {
3389: $currentstring = $token->[4];
3390: }
3391: return $currentstring;
3392: }
3393:
3394: sub end_tbody {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web') {
3398: $currentstring = $token->[2];
3399: }
3400: return $currentstring;
3401: }
3402:
3403: #-- <tfoot> tag (end tag optional)
3404: sub start_tfoot {
3405: my ($target,$token) = @_;
3406: my $currentstring = '';
3407: if ($target eq 'web') {
3408: $currentstring = $token->[4];
3409: }
3410: return $currentstring;
3411: }
3412:
3413: sub end_tfoot {
3414: my ($target,$token) = @_;
3415: my $currentstring = '';
3416: if ($target eq 'web') {
3417: $currentstring = $token->[2];
3418: }
3419: return $currentstring;
3420: }
3421:
3422: #-- <thead> tag (end tag optional)
3423: sub start_thead {
3424: my ($target,$token) = @_;
3425: my $currentstring = '';
3426: if ($target eq 'web') {
3427: $currentstring = $token->[4];
3428: }
3429: return $currentstring;
3430: }
3431:
3432: sub end_thead {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web') {
3436: $currentstring = $token->[2];
3437: }
3438: return $currentstring;
3439: }
3440:
3441: #-- <var> tag
3442: sub start_var {
3443: my ($target,$token) = @_;
3444: my $currentstring = '';
3445: if ($target eq 'web') {
3446: $currentstring = $token->[4];
3447: } elsif ($target eq 'tex') {
3448: $currentstring = '\textit{';
3449: }
3450: return $currentstring;
3451: }
3452:
3453: sub end_var {
3454: my ($target,$token) = @_;
3455: my $currentstring = '';
3456: if ($target eq 'web') {
3457: $currentstring = $token->[2];
3458: } elsif ($target eq 'tex') {
3459: $currentstring = '}';
3460: }
3461: return $currentstring;
3462: }
3463:
3464: #-- <wbr> tag (end tag forbidden)
3465: sub start_wbr {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web') {
3469: $currentstring = $token->[4];
3470: }
3471: return $currentstring;
3472: }
3473:
3474: sub end_wbr {
3475: my ($target,$token) = @_;
3476: my $currentstring = '';
3477: if ($target eq 'web') {
3478: $currentstring = $token->[2];
3479: }
3480: return $currentstring;
3481: }
3482:
3483: #-- <hideweboutput> tag
3484: sub start_hideweboutput {
3485: my ($target,$token) = @_;
3486: if ($target eq 'web') {
3487: &Apache::lonxml::startredirection();
3488: }
3489: return '';
3490: }
3491:
3492: sub end_hideweboutput {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web') {
3496: $currentstring = &Apache::lonxml::endredirection();
3497: }
3498: return '';
3499: }
3500:
3501:
3502: sub image_replication {
3503: my $src = shift;
3504: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3505: #replicates eps or ps
3506: my $epssrc = my $pssrc = $src;
3507: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3508: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3509: if (not -e $epssrc && not -e $pssrc) {
3510: my $result=&Apache::lonnet::repcopy($epssrc);
3511: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3512: }
3513: return '';
3514: }
3515:
3516: sub image_size {
3517: my ($src,$scaling,$parstack,$safeeval)=@_;
3518: #size of image from gif/jpg/jpeg/png
3519: my $image = Image::Magick->new;
3520: my $current_figure = $image->Read($src);
3521: my $width_param = $image->Get('width') * $scaling;;
3522: my $height_param = $image->Get('height') * $scaling;;
3523: undef $image;
3524: #do we have any specified LaTeX size of the picture?
3525: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3526: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3527: #do we have any specified web size of the picture?
3528: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3529: undef,1);
3530: if ($TeXwidth ne '') {
3531: if ($TeXwidth=~/(\d+)\s*\%/) {
3532: $width_param = $1*$ENV{'form.textwidth'}/100;
3533: } else {
3534: $width_param = $TeXwidth;
3535: }
3536: } elsif ($TeXheight ne '') {
3537: $width_param = $TeXheight/$height_param*$width_param;
3538: } elsif ($width ne '') {
3539: $width_param = $width*$scaling;
3540: }
3541: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3542: return $width_param;
3543: }
3544:
3545: sub eps_generation {
3546: my ($src,$file,$width_param) = @_;
3547: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3548: my $temp_file = Apache::File->new('>>'.$filename);
3549: print $temp_file "$src\n";
3550: my $newsrc = $src;
3551: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3552: $newsrc=~s/\/home\/httpd\/html\/res//;
3553: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3554: $newsrc=~s/\/\.\//\//;
3555: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3556: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3557: $newsrc=~s/\/home\/httpd\/lonUsers//;
3558: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3559: }
3560: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3561: }
3562:
3563: sub file_path {
3564: my $src=shift;
3565: my ($file,$path);
3566: if ($src =~ m!(.*)/([^/]*)$!) {
3567: $file = $2;
3568: $path = $1.'/';
3569: }
3570: return $file,$path;
3571: }
3572:
3573: sub recalc {
3574: my $argument = shift;
3575: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3576: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3577: my $value=$1;
3578: my $units=$2;
3579: if ($units eq 'cm') {
3580: $value*=10;
3581: } elsif ($units eq 'in') {
3582: $value*=25.4;
3583: } elsif ($units eq 'pc') {
3584: $value*=(25.4*12/72.27);
3585: } elsif ($units eq 'pt') {
3586: $value*=(25.4/72.27);
3587: }
3588: return $value.' mm';
3589: }
3590:
3591: sub LATEX_length {
3592: my $garbage=shift;
3593: $garbage=~s/^\s+$//;
3594: $garbage=~s/^\s+(\S.*)/$1/;#space before
3595: $garbage=~s/(.*\S)\s+$/$1/;#space after
3596: $garbage=~s/(\s)+/$1/;#only one space
3597: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3598: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3599: $garbage=~s/([^\\])\$/$1/g;#$
3600: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3601: $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;
3602: $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;
3603: $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;
3604: $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;
3605: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
3606: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
3607: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3608: #remove some other LaTeX command
3609: $garbage=~s|\\(\w+)\\|\\|g;
3610: $garbage=~s|\\(\w+)(\s*)|$2|g;
3611: $garbage=~s|\+|11|g;
3612:
3613: &Apache::lonnet::logthis("garbage was just $garbage");
3614: my $value=length($garbage);
3615: return $value;
3616: }
3617:
3618:
3619:
3620:
3621: 1;
3622: __END__
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