1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.215 2004/05/12 18:59:38 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}\usepackage{calc}
166: \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}}
167: \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}}';
168: }
169: return $currentstring;
170: }
171:
172: sub end_html {
173: my ($target,$token) = @_;
174: my $currentstring = '';
175: if ($target eq 'web') {
176: $currentstring = &Apache::lonxml::xmlend();
177: }
178: return $currentstring;
179: }
180:
181: #-- <head> tag (end tag optional)
182: sub start_head {
183: my ($target,$token) = @_;
184: my $currentstring = '';
185: if ($target eq 'web') {
186: $currentstring = $token->[4];
187: }
188: return $currentstring;
189: }
190:
191: sub end_head {
192: my ($target,$token) = @_;
193: my $currentstring = '';
194: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
195: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
196: $token->[2];
197: }
198: return $currentstring;
199: }
200:
201: #-- <map> tag (end tag required)
202: sub start_map {
203: my ($target,$token) = @_;
204: my $currentstring = '';
205: if ($target eq 'web') {
206: $currentstring = $token->[4];
207: }
208: return $currentstring;
209: }
210:
211: sub end_map {
212: my ($target,$token) = @_;
213: my $currentstring = '';
214: if ($target eq 'web') {
215: $currentstring = $token->[2];
216: }
217: return $currentstring;
218: }
219:
220: #-- <select> tag (end tag required)
221: sub start_select {
222: my ($target,$token) = @_;
223: my $currentstring = '';
224: if ($target eq 'web') {
225: $currentstring = $token->[4];
226: } elsif ($target eq 'tex') {
227: $Apache::londefdef::select=0;
228: }
229: return $currentstring;
230: }
231:
232: sub end_select {
233: my ($target,$token) = @_;
234: my $currentstring = '';
235: if ($target eq 'web') {
236: $currentstring = $token->[2];
237: }
238: return $currentstring;
239: }
240:
241: #-- <option> tag (end tag optional)
242: sub start_option {
243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
244: my $currentstring = '';
245: if ($target eq 'web') {
246: $currentstring = $token->[4];
247: } elsif ($target eq 'tex') {
248: $Apache::londefdef::select++;
249: if ($Apache::londefdef::select == 1) {
250: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
251: } else {
252: $currentstring='\keephidden{';
253: }
254: }
255: return $currentstring;
256: }
257:
258: sub end_option {
259: my ($target,$token) = @_;
260: my $currentstring = '';
261: if ($target eq 'web') {
262: $currentstring = $token->[2];
263: } elsif ($target eq 'tex') {
264: $currentstring='}';
265: }
266: return $currentstring;
267: }
268:
269: #-- <input> tag (end tag forbidden)
270: sub start_input {
271: my ($target,$token) = @_;
272: my $currentstring = '';
273: if ($target eq 'web') {
274: $currentstring = $token->[4];
275: }
276: return $currentstring;
277: }
278:
279: sub end_input {
280: my ($target,$token) = @_;
281: my $currentstring = '';
282: if ($target eq 'web') {
283: $currentstring = $token->[2];
284: }
285: return $currentstring;
286: }
287:
288: #-- <textarea> tag (end tag required)
289: sub start_textarea {
290: my ($target,$token) = @_;
291: my $currentstring = '';
292: if ($target eq 'web') {
293: $currentstring = $token->[4];
294: }
295: return $currentstring;
296: }
297:
298: sub end_textarea {
299: my ($target,$token) = @_;
300: my $currentstring = '';
301: if ($target eq 'web') {
302: $currentstring = $token->[2];
303: }
304: return $currentstring;
305: }
306:
307: #-- <form> tag (end tag required)
308: sub start_form {
309: my ($target,$token) = @_;
310: my $currentstring = '';
311: if ($target eq 'web') {
312: $currentstring = $token->[4];
313: }
314: return $currentstring;
315: }
316:
317: sub end_form {
318: my ($target,$token) = @_;
319: my $currentstring = '';
320: if ($target eq 'web') {
321: $currentstring = $token->[2];
322: }
323: return $currentstring;
324: }
325:
326: #-- <title> tag (end tag required)
327: sub start_title {
328: my ($target,$token) = @_;
329: my $currentstring = '';
330: if ($target eq 'web') {
331: $currentstring = $token->[4];
332: } elsif ($target eq 'tex') {
333: $currentstring .= '\keephidden{Title of the document: '
334: }
335: if ($target eq 'meta') {
336: $currentstring='<title>';
337: &start_output($target);
338: }
339: return $currentstring;
340: }
341:
342: sub end_title {
343: my ($target,$token) = @_;
344: my $currentstring = '';
345: if ($target eq 'web') {
346: $currentstring = $token->[2];
347: } elsif ($target eq 'tex') {
348: $currentstring .= '}';
349: }
350: if ($target eq 'meta') {
351: &end_output($target);
352: $currentstring='</title>';
353: }
354: return $currentstring;
355: }
356:
357: #-- <meta> tag (end tag forbidden)
358: sub start_meta {
359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
360: my $currentstring = '';
361: if ($target eq 'web') {
362: my $args='';
363: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
364: if ($args eq '') {
365: &Apache::lonxml::get_all_text("/meta",$parser);
366: } else {
367: $currentstring = $token->[4];
368: }
369: } elsif ($target eq 'meta') {
370: unless (&Apache::lonxml::get_param
371: ('http-equiv',$parstack,$safeeval,undef,1)) {
372: my $name=$token->[2]->{'name'};
373: $name=~tr/A-Z/a-z/;
374: $name=~s/\s/\_/gs;
375: $name=~s/\W//gs;
376: if ($name) {
377: $currentstring='<'.$name;
378: my $display=&Apache::lonxml::get_param
379: ('display',$parstack,$safeeval,undef,1);
380: if ($display) {
381: $display=~s/\"/\'/g;
382: $currentstring.=' display="'.$display.'"';
383: }
384: $currentstring.='>'.
385: &Apache::lonxml::get_param
386: ('content',$parstack,$safeeval,undef,1).
387: '</'.$name.'>';
388: }
389: my $display=&Apache::lonxml::get_param
390: ('display',$parstack,$safeeval,undef,1);
391: if ($display) {
392: $display=&HTML::Entities::encode($display,'<>&"');
393: $currentstring.='<'.$name.'.display>'.$display.
394: '</'.$name.'.display>';
395: }
396: }
397: } elsif ($target eq 'tex') {
398: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
399: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
400: if ((not defined $content) && (not defined $name)) {
401: &Apache::lonxml::startredirection();
402: }
403: }
404: return $currentstring;
405: }
406:
407: sub end_meta {
408: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
409: my $currentstring = '';
410: if ($target eq 'web') {
411: my $args='';
412: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
413: if ($args ne '') {
414: $currentstring = $token->[4];
415: }
416: } elsif ($target eq 'tex') {
417: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
418: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
419: if ((not defined $content) && (not defined $name)) {
420: &Apache::lonxml::endredirection();
421: }
422: }
423: return $currentstring;
424: }
425:
426: # accessrule
427: sub start_accessrule {
428: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
429: my $currentstring = '';
430: my $eff=&Apache::lonxml::get_param
431: ('effect',$parstack,$safeeval,undef,1);
432: my $realm=&Apache::lonxml::get_param
433: ('realm',$parstack,$safeeval,undef,1);
434: my $role=&Apache::lonxml::get_param
435: ('role',$parstack,$safeeval,undef,1);
436: $realm=~s/\s+//g;
437: $realm=~s/\//\_/g;
438: $realm=~s/^\_//;
439: $realm=~s/\W/\;/g;
440: $role=~s/\s+//g;
441: $role=~s/\//\_/g;
442: $role=~s/\W/\;/g;
443: if ($target eq 'web') {
444: my $args='';
445: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
446: if ($args eq '') {
447: &Apache::lonxml::get_all_text("/accessrule",$parser);
448: } else {
449: $currentstring = $token->[4];
450: }
451: }
452: if ($target eq 'meta') {
453: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
454: }
455: return $currentstring;
456: }
457:
458: sub end_accessrule {
459: my ($target,$token,$tagstack,$parstack,$parser) = @_;
460: my $currentstring = '';
461: if ($target eq 'web') {
462: my $args='';
463: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
464: if ($args ne '') {
465: $currentstring = $token->[4];
466: }
467: }
468: return $currentstring;
469: }
470:
471: #-- <body> tag (end tag required)
472: sub start_body {
473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
474: my $currentstring = '';
475: if ($target eq 'web') {
476: if ($Apache::lonhomework::parsing_a_problem) {
477: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
478: return '';
479: }
480: if (!$Apache::lonxml::registered &&
481: $ENV{'request.state'} eq 'published') {
482: $currentstring.='<head>'.
483: &Apache::lonmenu::registerurl(undef,$target).'</head>';
484: }
485: # Accessibility
486: if ($ENV{'browser.imagesuppress'} eq 'on') {
487: delete($token->[2]->{'background'});
488: }
489: if ($ENV{'browser.fontenhance'} eq 'on') {
490: my $style='';
491: foreach my $key (keys(%{$token->[2]})) {
492: if ($key =~ /^style$/i) {
493: $style.=$token->[2]->{$key}.';';
494: delete($token->[2]->{$key});
495: }
496: }
497: $token->[2]->{'style'}=$style.'; font-size: x-large;';
498: }
499: if ($ENV{'browser.blackwhite'} eq 'on') {
500: delete($token->[2]->{'font'});
501: delete($token->[2]->{'link'});
502: delete($token->[2]->{'alink'});
503: delete($token->[2]->{'vlink'});
504: delete($token->[2]->{'bgcolor'});
505: delete($token->[2]->{'background'});
506: }
507: # Overload loads
508: my $onLoad='';
509: foreach my $key (keys(%{$token->[2]})) {
510: if ($key =~ /^onload$/i) {
511: $onLoad.=$token->[2]->{$key}.';';
512: delete($token->[2]->{$key});
513: }
514: }
515: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
516: my $onUnload='';
517: foreach my $key (keys(%{$token->[2]})) {
518: if ($key =~ /^onunload$/i) {
519: $onUnload.=$token->[2]->{$key}.';';
520: delete($token->[2]->{$key});
521: }
522: }
523: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
524: ';'.$onUnload;
525:
526: $currentstring .= '<'.$token->[1];
527: foreach (keys %{$token->[2]}) {
528: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
529: }
530: $currentstring.='>';
531: if ($ENV{'request.state'} ne 'published') {
532: $currentstring.=(<<EDITBUTTON);
533: <form method="post">
534: <input type="submit" name="editmode" accesskey="e" value="Edit" />
535: </form>
536: EDITBUTTON
537: } else {
538: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
539: }
540: $currentstring.=&Apache::lonxml::message_location();
541: } elsif ($target eq 'tex') {
542: $currentstring = '\begin{document}';
543: }
544: return $currentstring;
545: }
546:
547: sub end_body {
548: my ($target,$token) = @_;
549: my $currentstring = '';
550: if ($target eq 'web') {
551: $currentstring = $token->[2];
552: } elsif ($target eq 'tex') {
553: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
554: }
555: return $currentstring;
556: }
557:
558: #-- <center> tag (end tag required)
559: sub start_center {
560: my ($target,$token) = @_;
561: my $currentstring = '';
562: if ($target eq 'web') {
563: $currentstring = $token->[4];
564: } elsif ($target eq 'tex') {
565: $currentstring = '\begin{center}';
566: }
567: return $currentstring;
568: }
569:
570: sub end_center {
571: my ($target,$token) = @_;
572: my $currentstring = '';
573: if ($target eq 'web') {
574: $currentstring = $token->[2];
575: } elsif ($target eq 'tex') {
576: $currentstring = '\end{center}';
577: }
578: return $currentstring;
579: }
580:
581: #-- <b> tag (end tag required)
582: sub start_b {
583: my ($target,$token) = @_;
584: my $currentstring = '';
585: if ($target eq 'web') {
586: $currentstring = $token->[4];
587: } elsif ($target eq 'tex') {
588: $currentstring = '\textbf{';
589: }
590: return $currentstring;
591: }
592:
593: sub end_b {
594: my ($target,$token) = @_;
595: my $currentstring = '';
596: if ($target eq 'web') {
597: $currentstring = $token->[2];
598: } elsif ($target eq 'tex') {
599: $currentstring = '}';
600: }
601: return $currentstring;
602: }
603:
604: #-- <strong> tag (end tag required)
605: sub start_strong {
606: my ($target,$token) = @_;
607: my $currentstring = '';
608: if ($target eq 'web') {
609: $currentstring = $token->[4];
610: } elsif ($target eq 'tex') {
611: $currentstring = '\textbf{';
612: }
613: return $currentstring;
614: }
615:
616: sub end_strong {
617: my ($target,$token) = @_;
618: my $currentstring = '';
619: if ($target eq 'web') {
620: $currentstring = $token->[2];
621: } elsif ($target eq 'tex') {
622: $currentstring = '}';
623: }
624: return $currentstring;
625: }
626:
627: #-- <h1> tag (end tag required)
628: sub start_h1 {
629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
630: my $currentstring = '';
631: if ($target eq 'web') {
632: $currentstring .= $token->[4];
633: } elsif ($target eq 'tex') {
634: my $pre;
635: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
636: if ($align eq 'center') {
637: $pre='\begin{center}';
638: } elsif ($align eq 'left') {
639: $pre='\rlap{';
640: } elsif ($align eq 'right') {
641: $pre=' \hfill \llap{';
642: }
643: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
644: if (not defined $TeXsize) {$TeXsize="large";}
645: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
646: } elsif ($target eq 'meta') {
647: $currentstring='<subject>';
648: &start_output($target);
649: }
650: return $currentstring;
651: }
652:
653: sub end_h1 {
654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
655: my $currentstring = '';
656: if ($target eq 'web') {
657: $currentstring .= $token->[2];
658: } elsif ($target eq 'tex') {
659: my $post='\vskip 0 mm ';
660: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
661: if ($align eq 'center') {
662: $post='\end{center}';
663: } elsif ($align eq 'left') {
664: $post='} \hfill'.'\vskip 0 mm ';
665: } elsif ($align eq 'right') {
666: $post='}'.'\vskip 0 mm ';
667: }
668: $currentstring .= '}}'.$post;
669: } elsif ($target eq 'meta') {
670: &end_output($target);
671: $currentstring='</subject>';
672: }
673: return $currentstring;
674: }
675:
676: #-- <h2> tag
677: sub start_h2 {
678: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
679: my $currentstring = '';
680: if ($target eq 'web') {
681: $currentstring .= $token->[4];
682: } elsif ($target eq 'tex') {
683: my $pre;
684: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
685: if ($align eq 'center') {
686: $pre='\begin{center}';
687: } elsif ($align eq 'left') {
688: $pre='\rlap{';
689: } elsif ($align eq 'right') {
690: $pre=' \hfill \llap{';
691: }
692: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
693: if (not defined $TeXsize) {$TeXsize="large";}
694: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
695: }
696: return $currentstring;
697: }
698:
699: sub end_h2 {
700: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
701: my $currentstring = '';
702: if ($target eq 'web') {
703: $currentstring .= $token->[2];
704: } elsif ($target eq 'tex') {
705: my $post='\vskip 0 mm ';
706: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
707: if ($align eq 'center') {
708: $post='\end{center}';
709: } elsif ($align eq 'left') {
710: $post='} \hfill'.'\vskip 0 mm ';
711: } elsif ($align eq 'right') {
712: $post='}'.'\vskip 0 mm ';
713: }
714: $currentstring .= '}}'.$post;
715: }
716: return $currentstring;
717: }
718:
719: #-- <h3> tag
720: sub start_h3 {
721: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
722: my $currentstring = '';
723: if ($target eq 'web') {
724: $currentstring .= $token->[4];
725: } elsif ($target eq 'tex') {
726: my $pre;
727: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
728: if ($align eq 'center') {
729: $pre='\begin{center}';
730: } elsif ($align eq 'left') {
731: $pre='\rlap{';
732: } elsif ($align eq 'right') {
733: $pre=' \hfill \llap{';
734: }
735: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
736: if (not defined $TeXsize) {$TeXsize="large";}
737: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
738: }
739: return $currentstring;
740: }
741:
742: sub end_h3 {
743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
744: my $currentstring = '';
745: if ($target eq 'web') {
746: $currentstring .= $token->[2];
747: } elsif ($target eq 'tex') {
748: my $post='\vskip 0 mm ';
749: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
750: if ($align eq 'center') {
751: $post='\end{center}';
752: } elsif ($align eq 'left') {
753: $post='} \hfill'.'\vskip 0 mm ';
754: } elsif ($align eq 'right') {
755: $post='}'.'\vskip 0 mm ';
756: }
757: $currentstring .= '}}'.$post;
758: }
759: return $currentstring;
760: }
761:
762: #-- <h4> tag
763: sub start_h4 {
764: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
765: my $currentstring = '';
766: if ($target eq 'web') {
767: $currentstring .= $token->[4];
768: } elsif ($target eq 'tex') {
769: my $pre;
770: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
771: if ($align eq 'center') {
772: $pre='\begin{center}';
773: } elsif ($align eq 'left') {
774: $pre='\rlap{';
775: } elsif ($align eq 'right') {
776: $pre=' \hfill \llap{';
777: }
778: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
779: if (not defined $TeXsize) {$TeXsize="large";}
780: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
781: }
782: return $currentstring;
783: }
784:
785: sub end_h4 {
786: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
787: my $currentstring = '';
788: if ($target eq 'web') {
789: $currentstring .= $token->[2];
790: } elsif ($target eq 'tex') {
791: my $post='\vskip 0 mm ';
792: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
793: if ($align eq 'center') {
794: $post='\end{center}';
795: } elsif ($align eq 'left') {
796: $post='} \hfill'.'\vskip 0 mm ';
797: } elsif ($align eq 'right') {
798: $post='}'.'\vskip 0 mm ';
799: }
800: $currentstring .= '}}'.$post;
801: }
802: return $currentstring;
803: }
804:
805: #-- <h5> tag
806: sub start_h5 {
807: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
808: my $currentstring = '';
809: if ($target eq 'web') {
810: $currentstring .= $token->[4];
811: } elsif ($target eq 'tex') {
812: my $pre;
813: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
814: if ($align eq 'center') {
815: $pre='\begin{center}';
816: } elsif ($align eq 'left') {
817: $pre='\rlap{';
818: } elsif ($align eq 'right') {
819: $pre=' \hfill \llap{';
820: }
821: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
822: if (not defined $TeXsize) {$TeXsize="large";}
823: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
824: }
825: return $currentstring;
826: }
827:
828: sub end_h5 {
829: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
830: my $currentstring = '';
831: if ($target eq 'web') {
832: $currentstring .= $token->[2];
833: } elsif ($target eq 'tex') {
834: my $post='\vskip 0 mm ';
835: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
836: if ($align eq 'center') {
837: $post='\end{center}';
838: } elsif ($align eq 'left') {
839: $post='} \hfill'.'\vskip 0 mm ';
840: } elsif ($align eq 'right') {
841: $post='}'.'\vskip 0 mm ';
842: }
843: $currentstring .= '}}'.$post;
844: }
845: return $currentstring;
846: }
847:
848: #-- <h6> tag
849: sub start_h6 {
850: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
851: my $currentstring = '';
852: if ($target eq 'web') {
853: $currentstring .= $token->[4];
854: } elsif ($target eq 'tex') {
855: my $pre;
856: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
857: if ($align eq 'center') {
858: $pre='\begin{center}';
859: } elsif ($align eq 'left') {
860: $pre='\rlap{';
861: } elsif ($align eq 'right') {
862: $pre=' \hfill \llap{';
863: }
864: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
865: if (not defined $TeXsize) {$TeXsize="large";}
866: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
867: }
868: return $currentstring;
869: }
870:
871: sub end_h6 {
872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
873: my $currentstring = '';
874: if ($target eq 'web') {
875: $currentstring .= $token->[2];
876: } elsif ($target eq 'tex') {
877: my $post='\vskip 0 mm ';
878: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
879: if ($align eq 'center') {
880: $post='\end{center}';
881: } elsif ($align eq 'left') {
882: $post='} \hfill'.'\vskip 0 mm ';
883: } elsif ($align eq 'right') {
884: $post='}'.'\vskip 0 mm ';
885: }
886: $currentstring .= '}}'.$post;
887: }
888: return $currentstring;
889: }
890:
891: #--- <cite> tag (end tag required)
892: sub start_cite {
893: my ($target,$token) = @_;
894: my $currentstring = '';
895: if ($target eq 'web') {
896: $currentstring .= $token->[4];
897: } elsif ($target eq 'tex') {
898: $currentstring .= '\textit{';
899: }
900: return $currentstring;
901: }
902:
903: sub end_cite {
904: my ($target,$token) = @_;
905: my $currentstring = '';
906: if ($target eq 'web') {
907: $currentstring .= $token->[2];
908: } elsif ($target eq 'tex') {
909: $currentstring .= '}';
910: }
911: return $currentstring;
912: }
913:
914: #-- <i> tag (end tag required)
915: sub start_i {
916: my ($target,$token) = @_;
917: my $currentstring = '';
918: if ($target eq 'web') {
919: $currentstring .= $token->[4];
920: } elsif ($target eq 'tex') {
921: $currentstring .= '\textit{';
922: }
923: return $currentstring;
924: }
925:
926: sub end_i {
927: my ($target,$token) = @_;
928: my $currentstring = '';
929: if ($target eq 'web') {
930: $currentstring .= $token->[2];
931: } elsif ($target eq 'tex') {
932: $currentstring .= '}';
933: }
934: return $currentstring;
935: }
936:
937: #-- <address> tag (end tag required)
938: sub start_address {
939: my ($target,$token) = @_;
940: my $currentstring = '';
941: if ($target eq 'web') {
942: $currentstring .= $token->[4];
943: } elsif ($target eq 'tex') {
944: $currentstring .= '\textit{';
945: }
946: return $currentstring;
947: }
948:
949: sub end_address {
950: my ($target,$token) = @_;
951: my $currentstring = '';
952: if ($target eq 'web') {
953: $currentstring .= $token->[2];
954: } elsif ($target eq 'tex') {
955: $currentstring .= '}';
956: }
957: return $currentstring;
958: }
959:
960: #-- <dfn> tag (end tag required)
961: sub start_dfn {
962: my ($target,$token) = @_;
963: my $currentstring = '';
964: if ($target eq 'web') {
965: $currentstring .= $token->[4];
966: } elsif ($target eq 'tex') {
967: $currentstring .= '\textit{';
968: }
969: return $currentstring;
970: }
971:
972: sub end_dfn {
973: my ($target,$token) = @_;
974: my $currentstring = '';
975: if ($target eq 'web') {
976: $currentstring .= $token->[2];
977: } elsif ($target eq 'tex') {
978: $currentstring .= '}';
979: }
980: return $currentstring;
981: }
982:
983: #-- <tt> tag (end tag required)
984: sub start_tt {
985: my ($target,$token) = @_;
986: my $currentstring = '';
987: if ($target eq 'web') {
988: $currentstring .= $token->[4];
989: } elsif ($target eq 'tex') {
990: $currentstring .= '\texttt{';
991: }
992: return $currentstring;
993: }
994:
995: sub end_tt {
996: my ($target,$token) = @_;
997: my $currentstring = '';
998: if ($target eq 'web') {
999: $currentstring .= $token->[2];
1000: } elsif ($target eq 'tex') {
1001: $currentstring .= '}';
1002: }
1003: return $currentstring;
1004: }
1005:
1006: #-- <kbd> tag (end tag required)
1007: sub start_kbd {
1008: my ($target,$token) = @_;
1009: my $currentstring = '';
1010: if ($target eq 'web') {
1011: $currentstring .= $token->[4];
1012: } elsif ($target eq 'tex') {
1013: $currentstring .= '\texttt{';
1014: }
1015: return $currentstring;
1016: }
1017:
1018: sub end_kbd {
1019: my ($target,$token) = @_;
1020: my $currentstring = '';
1021: if ($target eq 'web') {
1022: $currentstring .= $token->[2];
1023: } elsif ($target eq 'tex') {
1024: $currentstring .= '}';
1025: }
1026: return $currentstring;
1027: }
1028:
1029: #-- <code> tag (end tag required)
1030: sub start_code {
1031: my ($target,$token) = @_;
1032: my $currentstring = '';
1033: if ($target eq 'web') {
1034: $currentstring .= $token->[4];
1035: } elsif ($target eq 'tex') {
1036: $currentstring .= '\texttt{';
1037: }
1038: return $currentstring;
1039: }
1040:
1041: sub end_code {
1042: my ($target,$token) = @_;
1043: my $currentstring = '';
1044: if ($target eq 'web') {
1045: $currentstring .= $token->[2];
1046: } elsif ($target eq 'tex') {
1047: $currentstring .= '}';
1048: }
1049: return $currentstring;
1050: }
1051:
1052: #-- <em> tag (end tag required)
1053: sub start_em {
1054: my ($target,$token) = @_;
1055: my $currentstring = '';
1056: if ($target eq 'web') {
1057: $currentstring .= $token->[4];
1058: } elsif ($target eq 'tex') {
1059: $currentstring .= '\emph{';
1060: }
1061: return $currentstring;
1062: }
1063:
1064: sub end_em {
1065: my ($target,$token) = @_;
1066: my $currentstring = '';
1067: if ($target eq 'web') {
1068: $currentstring .= $token->[2];
1069: } elsif ($target eq 'tex') {
1070: $currentstring .= '}';
1071: }
1072: return $currentstring;
1073: }
1074:
1075: #-- <q> tag (end tag required)
1076: sub start_q {
1077: my ($target,$token) = @_;
1078: my $currentstring = '';
1079: if ($target eq 'web') {
1080: $currentstring .= $token->[4];
1081: } elsif ($target eq 'tex') {
1082: $currentstring .= '\emph{';
1083: }
1084: return $currentstring;
1085: }
1086:
1087: sub end_q {
1088: my ($target,$token) = @_;
1089: my $currentstring = '';
1090: if ($target eq 'web') {
1091: $currentstring .= $token->[2];
1092: } elsif ($target eq 'tex') {
1093: $currentstring .= '}';
1094: }
1095: return $currentstring;
1096: }
1097:
1098: #-- <p> tag (end tag optional)
1099: #optional attribute - align="center|left|right"
1100: sub start_p {
1101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1102: my $currentstring = '';
1103: if ($target eq 'web') {
1104: $currentstring .= $token->[4];
1105: } elsif ($target eq 'tex') {
1106: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1107: if ($align eq 'center') {
1108: $currentstring='\begin{center}\par';
1109: } elsif ($align eq 'right') {
1110: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1111: } elsif ($align eq 'left') {
1112: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1113: }
1114: my $signal=1;#<p> does not work inside <b>...</b>
1115: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1116: if (!$signal) {$currentstring = '';}
1117: }
1118: }
1119: return $currentstring;
1120: }
1121:
1122: sub end_p {
1123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1124: my $currentstring = '';
1125: if ($target eq 'web') {
1126: $currentstring .= $token->[2];
1127: } elsif ($target eq 'tex') {
1128: if ($$tagstack[-1] eq 'p') {
1129: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1130: if ($align eq 'center') {
1131: $currentstring .= '\end{center}';
1132: } elsif ($align eq 'right') {
1133: $currentstring .= '}}';
1134: } elsif ($align eq 'left') {
1135: $currentstring .= '}\hfill}';
1136: }
1137: }
1138: }
1139: return $currentstring;
1140: }
1141:
1142: #-- <br> tag (end tag forbidden)
1143: sub start_br {
1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1145: my $currentstring = '';
1146: if ($target eq 'web') {
1147: $currentstring .= $token->[4];
1148: } elsif ($target eq 'tex') {
1149: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1150: $currentstring .= '\vskip 0.2 mm ';
1151: }
1152: }
1153: return $currentstring;
1154: }
1155:
1156: sub end_br {
1157: my ($target,$token) = @_;
1158: my $currentstring = '';
1159: if ($target eq 'web') {
1160: $currentstring .= $token->[2];
1161: }
1162: return $currentstring;
1163: }
1164:
1165: #-- <big> tag (end tag required)
1166: sub start_big {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web') {
1170: $currentstring .= $token->[4];
1171: } elsif ($target eq 'tex') {
1172: $currentstring .= '{\large ';
1173: }
1174: return $currentstring;
1175: }
1176:
1177: sub end_big {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web') {
1181: $currentstring .= $token->[2];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '}';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: #-- <small> tag (end tag required)
1189: sub start_small {
1190: my ($target,$token) = @_;
1191: my $currentstring = '';
1192: if ($target eq 'web') {
1193: $currentstring .= $token->[4];
1194: } elsif ($target eq 'tex') {
1195: $currentstring .= '{\footnotesize ';
1196: }
1197: return $currentstring;
1198: }
1199:
1200: sub end_small {
1201: my ($target,$token) = @_;
1202: my $currentstring = '';
1203: if ($target eq 'web') {
1204: $currentstring .= $token->[2];
1205: } elsif ($target eq 'tex') {
1206: $currentstring .= '}';
1207: }
1208: return $currentstring;
1209: }
1210:
1211: #-- <basefont> tag (end tag forbidden)
1212: sub start_basefont {
1213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1214: my $currentstring = '';
1215: if ($target eq 'web') {
1216: $currentstring = $token->[4];
1217: } elsif ($target eq 'tex') {
1218: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1219: if (defined $basesize) {
1220: $currentstring = '{\\'.$basesize.' ';
1221: }
1222: }
1223: return $currentstring;
1224: }
1225:
1226: sub end_basefont {
1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1228: my $currentstring = '';
1229: if ($target eq 'web') {
1230: $currentstring = $token->[4];
1231: } elsif ($target eq 'tex') {
1232: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1233: if (defined $basesize) {
1234: $currentstring = '}';
1235: }
1236: }
1237: return $currentstring;
1238: }
1239:
1240: #-- <font> tag (end tag required)
1241: sub start_font {
1242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1243: my $currentstring = '';
1244: if ($target eq 'web') {
1245: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1246: if ($face!~/symbol/i) {
1247: if (($ENV{'browser.fontenhance'} eq 'on') ||
1248: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1249: }
1250: $currentstring = $token->[4];
1251: } elsif ($target eq 'tex') {
1252: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1253: if (defined $fontsize) {
1254: $currentstring = '{\\'.$fontsize.' ';
1255: }
1256: }
1257: return $currentstring;
1258: }
1259:
1260: sub end_font {
1261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1262: my $currentstring = '';
1263: if ($target eq 'web') {
1264: $currentstring = $token->[2];
1265: } elsif ($target eq 'tex') {
1266: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1267: if (defined $fontsize) {
1268: $currentstring = '}';
1269: }
1270: }
1271: return $currentstring;
1272: }
1273:
1274: #-- <strike> tag (end tag required)
1275: sub start_strike {
1276: my ($target,$token) = @_;
1277: my $currentstring = '';
1278: if ($target eq 'web') {
1279: $currentstring .= $token->[4];
1280: } elsif ($target eq 'tex') {
1281: &Apache::lonxml::startredirection();
1282: }
1283: return $currentstring;
1284: }
1285:
1286: sub end_strike {
1287: my ($target,$token) = @_;
1288: my $currentstring = '';
1289: if ($target eq 'web') {
1290: $currentstring .= $token->[2];
1291: } elsif ($target eq 'tex') {
1292: $currentstring=&Apache::lonxml::endredirection();
1293: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1294: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1295: $currentstring=~s/(\S)\s*$/$1\}/;
1296: }
1297: return $currentstring;
1298: }
1299:
1300: #-- <s> tag (end tag required)
1301: sub start_s {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web') {
1305: $currentstring .= $token->[4];
1306: } elsif ($target eq 'tex') {
1307: &Apache::lonxml::startredirection();
1308: }
1309: return $currentstring;
1310: }
1311:
1312: sub end_s {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web') {
1316: $currentstring .= $token->[2];
1317: } elsif ($target eq 'tex') {
1318: $currentstring=&Apache::lonxml::endredirection();
1319: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1320: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1321: $currentstring=~s/(\S)\s*$/$1\}/;
1322: }
1323: return $currentstring;
1324: }
1325:
1326: #-- <sub> tag (end tag required)
1327: sub start_sub {
1328: my ($target,$token) = @_;
1329: my $currentstring = '';
1330: if ($target eq 'web') {
1331: $currentstring .= $token->[4];
1332: } elsif ($target eq 'tex') {
1333: $currentstring .= '\ensuremath{_{';
1334: }
1335: return $currentstring;
1336: }
1337:
1338: sub end_sub {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web') {
1342: $currentstring .= $token->[2];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= '}}';
1345: }
1346: return $currentstring;
1347: }
1348:
1349: #-- <sup> tag (end tag required)
1350: sub start_sup {
1351: my ($target,$token) = @_;
1352: my $currentstring = '';
1353: if ($target eq 'web') {
1354: $currentstring .= $token->[4];
1355: } elsif ($target eq 'tex') {
1356: $currentstring .= '\ensuremath{^{';
1357: }
1358: return $currentstring;
1359: }
1360:
1361: sub end_sup {
1362: my ($target,$token) = @_;
1363: my $currentstring = '';
1364: if ($target eq 'web') {
1365: $currentstring .= $token->[2];
1366: } elsif ($target eq 'tex') {
1367: $currentstring .= '}}';
1368: }
1369: return $currentstring;
1370: }
1371:
1372: #-- <hr> tag (end tag forbidden)
1373: sub start_hr {
1374: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1375: my $currentstring = '';
1376: if ($target eq 'web') {
1377: $currentstring .= $token->[4];
1378: } elsif ($target eq 'tex') {
1379: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1380: if (defined $LaTeXwidth) {
1381: if ($LaTeXwidth=~/^%/) {
1382: substr($LaTeXwidth,0,1)='';
1383: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1384: }
1385: } else {
1386: $LaTeXwidth ='0.9\textwidth';
1387: }
1388: my ($pre,$post);
1389: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1390: if (($align eq 'center') || (not defined $align)) {
1391: $pre=''; $post='';
1392: } elsif ($align eq 'left') {
1393: $pre='\rlap{'; $post='} \hfill';
1394: } elsif ($align eq 'right') {
1395: $pre=' \hfill \llap{'; $post='}';
1396: }
1397: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1398: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1399: }
1400: return $currentstring;
1401: }
1402:
1403: sub end_hr {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web') {
1407: $currentstring .= $token->[2];
1408: }
1409: return $currentstring;
1410: }
1411:
1412: #-- <div> tag (end tag required)
1413: sub start_div {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web') {
1417: $currentstring .= $token->[4];
1418: }
1419: return $currentstring;
1420: }
1421:
1422: sub end_div {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web') {
1426: $currentstring .= $token->[2];
1427: }
1428: return $currentstring;
1429: }
1430:
1431: #-- <a> tag (end tag required)
1432: sub start_a {
1433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1434: my $currentstring = '';
1435: if ($target eq 'web') {
1436: $currentstring .= $token->[4];
1437: } elsif ($target eq 'tex') {
1438: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1439: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1440: if ($a=~/\S/) {
1441: $a=~s/([^\\])%/$1\\\%/g;
1442: $currentstring .= '\ref{URI: '.$a.'}';
1443: } elsif ($b=~/\S/) {
1444: $currentstring .= '\ref{Anchor: '.$b.'}';
1445: } else {
1446: $currentstring.='';
1447: }
1448: }
1449: return $currentstring;
1450: }
1451:
1452: sub end_a {
1453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web') {
1456: $currentstring .= $token->[2];
1457: }
1458: return $currentstring;
1459: }
1460:
1461: #-- <li> tag (end tag optional)
1462: sub start_li {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web') {
1466: $currentstring = $token->[4];
1467: } elsif ($target eq 'tex') {
1468: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1469: if ($type=~/circle/) {
1470: $currentstring .= ' \item[o] ';
1471: } elsif ($type=~/square/) {
1472: $currentstring .= ' \item[$\Box$] ';
1473: } elsif ($type ne '') {
1474: $currentstring .= ' \item['.$type.'] ';
1475: } else {
1476: $currentstring .= ' \item ';
1477: }
1478: }
1479: return $currentstring;
1480: }
1481:
1482: sub end_li {
1483: my ($target,$token) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web') {
1486: $currentstring = $token->[2];
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <u> tag (end tag required)
1492: sub start_u {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web') {
1496: $currentstring .= $token->[4];
1497: } elsif ($target eq 'tex') {
1498: &Apache::lonxml::startredirection();
1499: }
1500: return $currentstring;
1501: }
1502:
1503: sub end_u {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web') {
1507: $currentstring .= $token->[2];
1508: } elsif ($target eq 'tex') {
1509: $currentstring=&Apache::lonxml::endredirection();
1510: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1511: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1512: $currentstring=~s/(\S)\s*$/$1\}/;
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <ul> tag (end tag required)
1518: sub start_ul {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = '';
1521: if ($target eq 'web') {
1522: $currentstring = $token->[4];
1523: } elsif ($target eq 'tex') {
1524: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1525: if ($TeXtype eq 'disc') {
1526: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1527: \renewcommand{\labelitemii}{$\bullet$}
1528: \renewcommand{\labelitemiii}{$\bullet$}
1529: \renewcommand{\labelitemiv}{$\bullet$}';
1530: } elsif ($TeXtype eq 'circle') {
1531: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1532: \renewcommand{\labelitemii}{$\circ$}
1533: \renewcommand{\labelitemiii}{$\circ$}
1534: \renewcommand{\labelitemiv}{$\circ$}';
1535: } elsif ($TeXtype eq 'square') {
1536: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1537: \renewcommand{\labelitemii}{$\diamond$}
1538: \renewcommand{\labelitemiii}{$\diamond$}
1539: \renewcommand{\labelitemiv}{$\diamond$}';
1540: }
1541: $currentstring .= '\begin{itemize}';
1542: }
1543: return $currentstring;
1544: }
1545:
1546: sub end_ul {
1547: my ($target,$token) = @_;
1548: my $currentstring = '';
1549: if ($target eq 'web') {
1550: $currentstring = $token->[2];
1551: } elsif ($target eq 'tex') {
1552: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1553: \renewcommand{\labelitemii}{$\bullet$}
1554: \renewcommand{\labelitemiii}{$\bullet$}
1555: \renewcommand{\labelitemiv}{$\bullet$}';
1556: }
1557: return $currentstring;
1558: }
1559:
1560: #-- <menu> tag (end tag required)
1561: sub start_menu {
1562: my ($target,$token) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web') {
1565: $currentstring = $token->[4];
1566: } elsif ($target eq 'tex') {
1567: $currentstring = " \\begin{itemize} ";
1568: }
1569: return $currentstring;
1570: }
1571:
1572: sub end_menu {
1573: my ($target,$token) = @_;
1574: my $currentstring = '';
1575: if ($target eq 'web') {
1576: $currentstring = $token->[2];
1577: } elsif ($target eq 'tex') {
1578: $currentstring = " \\end{itemize}";
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <dir> tag (end tag required)
1584: sub start_dir {
1585: my ($target,$token) = @_;
1586: my $currentstring = '';
1587: if ($target eq 'web') {
1588: $currentstring = $token->[4];
1589: } elsif ($target eq 'tex') {
1590: $currentstring = " \\begin{itemize} ";
1591: }
1592: return $currentstring;
1593: }
1594:
1595: sub end_dir {
1596: my ($target,$token) = @_;
1597: my $currentstring = '';
1598: if ($target eq 'web') {
1599: $currentstring = $token->[2];
1600: } elsif ($target eq 'tex') {
1601: $currentstring = " \\end{itemize}";
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <ol> tag (end tag required)
1607: sub start_ol {
1608: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring = $token->[4];
1612: } elsif ($target eq 'tex') {
1613: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1614: if ($type eq '1') {
1615: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1616: \renewcommand{\labelenumii}{\arabic{enumii}.}
1617: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1618: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1619: } elsif ($type eq 'A') {
1620: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1621: \renewcommand{\labelenumii}{\Alph{enumii}.}
1622: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1623: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1624: } elsif ($type eq 'a') {
1625: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1626: \renewcommand{\labelenumii}{\alph{enumii}.}
1627: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1628: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1629: } elsif ($type eq 'i') {
1630: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1631: \renewcommand{\labelenumii}{\roman{enumii}.}
1632: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1633: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1634: } elsif ($type eq 'I') {
1635: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1636: \renewcommand{\labelenumii}{\Roman{enumii}.}
1637: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1638: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1639: }
1640: $currentstring .= '\begin{enumerate}';
1641: }
1642: return $currentstring;
1643: }
1644:
1645: sub end_ol {
1646: my ($target,$token) = @_;
1647: my $currentstring = '';
1648: if ($target eq 'web') {
1649: $currentstring = $token->[2];
1650: } elsif ($target eq 'tex') {
1651: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1652: \renewcommand{\labelenumii}{\arabic{enumii}.}
1653: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1654: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1655: }
1656: return $currentstring;
1657: }
1658:
1659: #-- <dl> tag (end tag required)
1660: sub start_dl {
1661: my ($target,$token) = @_;
1662: my $currentstring = '';
1663: if ($target eq 'web') {
1664: $currentstring = $token->[4];
1665: } elsif ($target eq 'tex') {
1666: $currentstring = '\begin{description}';
1667: @Apache::londefdef::description=();
1668: $Apache::londefdef::DD_redirection=0;
1669: $Apache::londefdef::DT_redirection=0;
1670: }
1671: return $currentstring;
1672: }
1673:
1674: sub end_dl {
1675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1676: my $currentstring = '';
1677: if ($target eq 'web') {
1678: $currentstring = $token->[2];
1679: } elsif ($target eq 'tex') {
1680: if ($Apache::londefdef::DT_redirection) {
1681: my $data=&item_cleanup;
1682: push @Apache::londefdef::description,'\item['.$data.']';
1683: $Apache::londefdef::DT_redirection=0;
1684: } elsif ($Apache::londefdef::DD_redirection) {
1685: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1686: }
1687: foreach my $element (@Apache::londefdef::description) {
1688: $currentstring.=' '.$element.' ';
1689: }
1690: @Apache::londefdef::description=();
1691: $currentstring.='\end{description}';
1692: }
1693: return $currentstring;
1694: }
1695:
1696: #-- <dt> tag (end tag optional)
1697: sub start_dt {
1698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1699: my $currentstring='';
1700: if ($target eq 'web') {
1701: $currentstring = $token->[4];
1702: } elsif ($target eq 'tex') {
1703: if ($Apache::londefdef::DT_redirection) {
1704: my $data=&item_cleanup;
1705: push @Apache::londefdef::description,'\item['.$data.']';
1706: $Apache::londefdef::DT_redirection=0;
1707: } elsif ($Apache::londefdef::DD_redirection) {
1708: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1709: $Apache::londefdef::DD_redirection=0;
1710: }
1711: &Apache::lonxml::startredirection();
1712: $Apache::londefdef::DT_redirection=1;
1713: }
1714: return $currentstring;
1715: }
1716:
1717: sub end_dt {
1718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web') {
1721: $currentstring = $token->[2];
1722: } elsif ($target eq 'tex') {
1723: my $data=&item_cleanup;
1724: push @Apache::londefdef::description,'\item['.$data.']';
1725: $Apache::londefdef::DT_redirection=0;
1726: }
1727: return $currentstring;
1728: }
1729:
1730: sub item_cleanup {
1731: my $item=&Apache::lonxml::endredirection();
1732: $item=~s/\\begin{center}//g;
1733: $item=~s/\\end{center}//g;
1734: return $item;
1735: }
1736:
1737: #-- <dd> tag (end tag optional)
1738: sub start_dd {
1739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1740: my $currentstring = '';
1741: if ($target eq 'web') {
1742: $currentstring = $token->[4];
1743: } elsif ($target eq 'tex') {
1744: if ($Apache::londefdef::DT_redirection) {
1745: my $data=&item_cleanup;
1746: push @Apache::londefdef::description,'\item['.$data.']';
1747: $Apache::londefdef::DT_redirection=0;
1748: }
1749: $Apache::londefdef::DD_redirection=1;
1750: &Apache::lonxml::startredirection();
1751: }
1752: return $currentstring;
1753: }
1754:
1755: sub end_dd {
1756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1757: my $currentstring = '';
1758: if ($target eq 'web') {
1759: $currentstring = $token->[2];
1760: } elsif ($target eq 'tex') {
1761: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1762: $Apache::londefdef::DD_redirection=0;
1763: }
1764: return $currentstring;
1765: }
1766:
1767: #-- <table> tag (end tag required)
1768: #list of supported attributes: border,width,TeXwidth
1769: sub start_table {
1770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1771: my ($textwidth,$currentstring)=('','');
1772: if ($target eq 'web') {
1773: $currentstring = $token->[4];
1774: } elsif ($target eq 'tex') {
1775: my $aa = {};
1776: push @Apache::londefdef::table, $aa;
1777: $Apache::londefdef::table[-1]{'row_number'} = -1;
1778: #table's width
1779: #default coincides with text line length
1780: if ($#Apache::londefdef::table==0) {
1781: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1782: $textwidth=~/(\d+\.?\d*)/;
1783: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1784: } else {
1785: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1786: #the maximum width of nested table is determined by LATeX width of parent cell
1787: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1788: } else {
1789: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1790: my $textwidth=$Apache::londefdef::table[-2]{'width'};
1791: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1792: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1793: }
1794: }
1795: }
1796: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1797: if (not defined $TeXwidth) {
1798: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1799: if ($htmlwidth=~/%/) {
1800: $Apache::londefdef::table[-1]{'percent'}=1;
1801: $htmlwidth=~/(\d+)/;
1802: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1803: } else {
1804: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1805: }
1806: } elsif ($TeXwidth=~/%/) {
1807: $Apache::londefdef::table[-1]{'percent'}=1;
1808: $TeXwidth=~/(\d+)/;
1809: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1810: } else {
1811: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1812: }
1813: #table's border
1814: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1815: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1816: unless (defined $border) { $border = 0; }
1817: if ($border) {
1818: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1819: $Apache::londefdef::table[-1]{'vinc'} = '&';
1820: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1821: } else {
1822: $Apache::londefdef::table[-1]{'hinc'} = '';
1823: $Apache::londefdef::table[-1]{'vinc'} = '&';
1824: $Apache::londefdef::table[-1]{'vvinc'} = '';
1825: }
1826: if ($#Apache::londefdef::table==0) {
1827: $Apache::londefdef::table[-1]{'output'}='\newline\setlength{\tabcolsep}{1 mm}';
1828: }
1829: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1830: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1831: $Apache::londefdef::table[-1]{'objectlen'}=[];
1832: $Apache::londefdef::table[-1]{'maxlen'}=[];
1833: $Apache::londefdef::table[-1]{'minlen'}=[];
1834: $Apache::londefdef::table[-1]{'content'}=[];
1835: $Apache::londefdef::table[-1]{'align'}=[];
1836: $currentstring='\keephidden{NEW TABLE ENTRY}';
1837: }
1838: return $currentstring;
1839: }
1840:
1841: sub end_table {
1842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1843: my $currentstring = '';
1844: if ($target eq 'web') {
1845: $currentstring = $token->[2];
1846: } elsif ($target eq 'tex') {
1847: my $inmemory = '';
1848: my $output = '';
1849: my $WARNING='';
1850: #width of columns from TeXwidth attributes
1851: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1852: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1853: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1854: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1855: }
1856: }
1857: }
1858: #free space and number of empty columns
1859: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1860: ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
1861: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1862: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1863: $empty_columns++;
1864: } else {
1865: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1866: }
1867: }
1868: #boundaries for contents columns
1869: my @min_len=();#columns can not be narrower
1870: my @max_len=();#maximum length of column
1871: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1872: my ($localmin,$localmax)=(0,0);
1873: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1874: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1875: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1876: }
1877: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1878: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1879: }
1880: }
1881: push @min_len, $localmin;
1882: push @max_len, $localmax;
1883: }
1884: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1885: my $localmin=0,;
1886: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1887: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1888: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1889: }
1890: }
1891: if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
1892: if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
1893: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1894: $min_len[$jn]=0;
1895: $max_len[$jn]=0;
1896: }
1897: }
1898: #final adjustment of column width
1899: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1900: my @adjust=();
1901: #step 1. adjustment by maximum value
1902: my $space_neeeded=0;
1903: for (my $jn=0;$jn<=$#max_len;$jn++) {
1904: $space_neeeded=$space_neeeded+$max_len[$jn];
1905: }
1906: if ($space_neeeded<=$available_space) {
1907: for (my $jn=0;$jn<=$#max_len;$jn++) {
1908: if ($fwidth[$jn]==0) {
1909: $fwidth[$jn]=$max_len[$jn];
1910: }
1911: }
1912: } else {
1913: #step 2. adjustment by minimum value (estimation)
1914: $space_neeeded=0;
1915: for (my $jn=0;$jn<=$#min_len;$jn++) {
1916: $space_neeeded+=$min_len[$jn];
1917: }
1918: if ($space_neeeded>$available_space) {
1919: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1920: for (my $jn=0;$jn<=$#max_len;$jn++) {
1921: if ($fwidth[$jn]==0) {
1922: $fwidth[$jn]=$min_len[$jn];
1923: }
1924: }
1925: } else {
1926: #step 3. adjustment over minimal + corrections
1927: my $enlarge_coef=$available_space/$space_neeeded;
1928: my $acsessive=0;
1929: for (my $jn=0;$jn<=$#min_len;$jn++) {
1930: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1931: if ($adjust[$jn]>$max_len[$jn]) {
1932: $fwidth[$jn]=$max_len[$jn];
1933: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1934: $adjust[$jn]=0;
1935: }
1936: }
1937: if ($acsessive>0) {
1938: #we have an excess of space and can redistribute it
1939: my $notempty_columns=0;
1940: for (my $jn=0;$jn<=$#min_len;$jn++) {
1941: if ($adjust[$jn]!=0) {
1942: $notempty_columns++;
1943: }
1944: }
1945: my $per_column=$acsessive/$notempty_columns;
1946: for (my $jn=0;$jn<=$#min_len;$jn++) {
1947: if ($adjust[$jn]!=0) {
1948: $adjust[$jn]+=$per_column;
1949: $fwidth[$jn]=$adjust[$jn];
1950: }
1951: }
1952: }
1953: }
1954: }
1955: #recalculation for the use of all available width if width is defined in %
1956: if ($Apache::londefdef::table[-1]{'percent'}==1) {
1957: my $current=0;
1958: for (my $i=0;$i<=$#fwidth;$i++) {
1959: $current+=$fwidth[$i];
1960: }
1961: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1962: for (my $i=0;$i<=$#fwidth;$i++) {
1963: $fwidth[$i]*=$coef;
1964: }
1965: }
1966: #removing of empty columns if allowed
1967: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1968: if ($permission eq 'yes') {
1969: my @cleaned_table=();
1970: my @cleaned_header=();
1971: my $colind=0;
1972: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1973: if ($fwidth[$jn]!=0) {
1974: #we need to copy column
1975: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1976: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
1977: $cleaned_header[$colind]=$fwidth[$jn];
1978: }
1979: $colind++;
1980: }
1981: }
1982: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
1983: @fwidth=@cleaned_header;
1984: }
1985: #construct header of the table
1986: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1987: for (my $in=0;$in<=$#fwidth;$in++) {
1988: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
1989: }
1990: $header_of_table .= '}';
1991: #fill the table
1992: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1993: for (my $jn=0;$jn<=$#fwidth;$jn++) {
1994: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
1995: $output.='\begin{center}';
1996: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
1997: $output.=' \hfill \llap{'
1998: }
1999: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2000: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2001: $output.='\end{center}';
2002: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2003: $output.='} ';
2004: }
2005: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2006: }
2007: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2008: }
2009: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\vskip 0 mm ';
2010: if ($#Apache::londefdef::table > 0) {
2011: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2012: pop @Apache::londefdef::table;
2013: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2014: } else {
2015: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2016: pop @Apache::londefdef::table;
2017: undef @Apache::londefdef::table;
2018: }
2019: }
2020: return $currentstring;
2021: }
2022:
2023: #-- <tr> tag (end tag optional)
2024: sub start_tr {
2025: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2026: my $currentstring = '';
2027: if ($target eq 'web') {
2028: $currentstring = $token->[4];
2029: } elsif ($target eq 'tex') {
2030: $Apache::londefdef::table[-1]{'row_number'}++;
2031: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2032: if ($alignchar ne '') {
2033: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2034: } else {
2035: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2036: }
2037: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2038: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2039: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2040: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2041: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2042: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2043: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2044: }
2045: return $currentstring;
2046: }
2047:
2048: sub end_tr {
2049: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2050: my $currentstring = '';
2051: if ($target eq 'web') {
2052: $currentstring = $token->[2];
2053: } elsif ($target eq 'tex') {
2054: if ($Apache::londefdef::TD_redirection) {
2055: &end_td_tex($parstack,$parser,$safeeval);
2056: }
2057: }
2058: return $currentstring;
2059: }
2060:
2061: #-- <td> tag (end tag optional)
2062: sub start_td {
2063: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2064: my $currentstring = '';
2065: if ($target eq 'web') {
2066: $currentstring = $token->[4];
2067: } elsif ($target eq 'tex') {
2068: $Apache::londefdef::TD_redirection = 1;
2069: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2070: }
2071: return $currentstring;
2072: }
2073:
2074: sub tag_check {
2075: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2076: my @ar=@$parstack;
2077: for (my $i=$#ar-1;$i>=0;$i--) {
2078: if (lc($$tagstack[$i]) eq $good_tag) {
2079: &start_td_tex($parstack,$parser,$safeeval);
2080: last;
2081: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2082: splice @ar, $i+1;
2083: &end_td_tex(\@ar,$parser,$safeeval);
2084: &start_td_tex($parstack,$parser,$safeeval);
2085: last;
2086: }
2087: }
2088: return '';
2089: }
2090:
2091: sub start_td_tex {
2092: my ($parstack,$parser,$safeeval) = @_;
2093: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2094: if ($alignchar eq '') {
2095: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2096: }
2097: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2098: $Apache::londefdef::table[-1]{'counter_columns'}++;
2099: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2100: if (defined $TeXwidth) {
2101: my $current_length=&recalc($TeXwidth);
2102: $current_length=~/(\d+\.?\d*)/;
2103: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2104: }
2105: &Apache::lonxml::startredirection();
2106: return '';
2107: }
2108:
2109: sub end_td_tex {
2110: my ($parstack,$parser,$safeeval) = @_;
2111: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2112: my $data=&Apache::lonxml::endredirection();
2113: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2114: if (defined $TeXwidth) {
2115: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2116: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2117: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2118: } else {
2119: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2120: my $garbage_data=$data;
2121: my $fwidth=0;
2122: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2123: my $current_length=&recalc($1);
2124: $current_length=~/(\d+\.?\d*)/;
2125: if ($fwidth<$1) {$fwidth=$1;}
2126: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2127: }
2128: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2129: my $current_length=$1;
2130: if ($fwidth<$current_length) {$fwidth=$current_length;}
2131: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2132: }
2133: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2134: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2135: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2136: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2137: } else {
2138: $data=~s/^\s+(\S.*)/$1/;
2139: $data=~s/(.*\S)\s+$/$1/;
2140: $data=~s/(\s)+/$1/;
2141: my ($current_length,$min_length)=(0,0);
2142: if ($data=~/\\vskip/) {
2143: my $newdata=$data;
2144: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2145: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2146: foreach my $elementdata (@newdata) {
2147: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2148: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2149: my @words=split(/ /,$elementdata);
2150: foreach my $word (@words) {
2151: my $lengthword=2.5*&LATEX_length($word);
2152: if ($min_length<$lengthword) {$min_length=$lengthword;}
2153: }
2154: }
2155: } else {
2156: $current_length=2.5*&LATEX_length($data);
2157: my @words=split(/ /,$data);
2158: foreach my $word (@words) {
2159: my $lengthword=2.5*&LATEX_length($word);
2160: if ($min_length<$lengthword) {$min_length=$lengthword;}
2161: }
2162: }
2163: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2164: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2165: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2166: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2167: }
2168: }
2169: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2170: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2171: }
2172: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2173: return'';
2174: }
2175:
2176: sub end_td {
2177: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2178: my $currentstring = '';
2179: if ($target eq 'web') {
2180: $currentstring = $token->[2];
2181: } elsif ($target eq 'tex') {
2182: $Apache::londefdef::TD_redirection =0;
2183: &end_td_tex($parstack,$parser,$safeeval);
2184: }
2185: return $currentstring;
2186: }
2187:
2188: #-- <th> tag (end tag optional)
2189: sub start_th {
2190: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2191: my $currentstring = '';
2192: if ($target eq 'web') {
2193: $currentstring = $token->[4];
2194: } elsif ($target eq 'tex') {
2195: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2196: if ($what_to_push eq '') {
2197: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2198: }
2199: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2200: $Apache::londefdef::table[-1]{'counter_columns'}++;
2201: &Apache::lonxml::startredirection();
2202: }
2203: return $currentstring;
2204: }
2205:
2206: sub end_th {
2207: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2208: my $currentstring = '';
2209: if ($target eq 'web') {
2210: $currentstring = $token->[2];
2211: } elsif ($target eq 'tex') {
2212: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2213: my $data=&Apache::lonxml::endredirection();
2214: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2215: if (defined $TeXwidth) {
2216: my $current_length=&recalc($TeXwidth);
2217: $current_length=~/(\d+)/;
2218: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2219: $Apache::londefdef::table[-1]{'length'} .= '0,';
2220: } else {
2221: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2222: my $current_length=&recalc($1);
2223: $current_length=~/(\d+)/;
2224: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2225: $Apache::londefdef::table[-1]{'length'} .= '0,';
2226: } else {
2227: $data=~/^\s*(\S.*)/;
2228: $data=$1;
2229: $data=~/(.*\S)\s*$/;
2230: $data=$1;
2231: my $current_length=2*length($data);
2232: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2233: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2234: }
2235: }
2236: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2237: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2238: }
2239: $data='\textbf{'.$data.'}';
2240: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2241: }
2242: return $currentstring;
2243: }
2244: #-- <img> tag (end tag forbidden)
2245: sub start_img {
2246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2247: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2248: undef,1);
2249: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2250: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2251: &Apache::lonnet::logthis("inside was $inside");
2252: return '';
2253: }
2254: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2255: my $currentstring = '';
2256: my $scaling = .3;
2257: if ($target eq 'web') {
2258: if ($ENV{'browser.imagesuppress'} ne 'on') {
2259: $currentstring.= $token->[4];
2260: } else {
2261: my $alttag= &Apache::lonxml::get_param
2262: ('alt',$parstack,$safeeval,undef,1);
2263: unless ($alttag) {
2264: $alttag=&Apache::lonmeta::alttag
2265: ($Apache::lonxml::pwd[-1],$src);
2266: }
2267: $currentstring.='[IMAGE: '.$alttag.']';
2268: }
2269: } elsif ($target eq 'tex') {
2270: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2271: #if uploaded restore the path
2272: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2273: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2274: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2275: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2276: }
2277: #if original gif/jpg/png file exist do following:
2278: if (-e $src) {
2279: #what is the image size?
2280: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2281: my ($file,$path)=&file_path($src);
2282: my $newsrc = $src;
2283: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2284: $file=~s/\.(gif|jpg|png)$/.eps/i;
2285: #where can we find the picture?
2286: if (-e $newsrc) {
2287: #eps counterpart for image exist
2288: if ($path) {
2289: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2290: }
2291: } else {
2292: #there is no eps counterpart for image - check for ps one
2293: $newsrc =~ s/\.eps$/\.ps/;
2294: if (-e $newsrc) {
2295: #ps counterpart for image exist
2296: $file =~ s/\.eps$/\.ps/;
2297: if ($path) {
2298: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2299: }
2300: } else {
2301: #care about eps dynamical generation
2302: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2303: }
2304: }
2305: } else {
2306: #original image file doesn't exist so check the alt attribute
2307: my $alt =
2308: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2309: unless ($alt) {
2310: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2311: }
2312:
2313: if ($alt) {
2314: $currentstring .= ' '.$alt.' ';
2315: } else {
2316: #<allow> tag will care about replication
2317: }
2318: }
2319: } elsif ($target eq 'edit') {
2320: $currentstring .=&Apache::edit::tag_start($target,$token);
2321: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2322: &Apache::edit::browse('src',undef,'alt').' '.
2323: &Apache::edit::search('src',undef,'alt').'<br />';
2324: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2325: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2326: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2327: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2328: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2329: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2330: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2331: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2332: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2333: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2334: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2335: if ($width) { $currentstring.=' width="'.$width.'" '; }
2336: if ($height) { $currentstring.=' height="'.$height.'" '; }
2337: $currentstring .= ' />';
2338: } elsif ($target eq 'modified') {
2339: my ($osrc,$owidth,$oheight)=
2340: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2341: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2342: $safeeval,'src','alt',
2343: 'TeXwidth','TeXheight',
2344: 'width','height');
2345: my ($nsrc,$nwidth,$nheight)=
2346: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2347: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2348: &image_replication($loc);
2349: my ($iwidth,$iheight);
2350: if (-e $loc) {
2351: my $image = Image::Magick->new;
2352: $image->Read($loc);
2353: ($iwidth, $iheight) = ($image->Get('width'),
2354: $image->Get('height'));
2355: }
2356: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2357: # changed image or no size specified,
2358: # if they didn't explicitly change the
2359: # width or height use the ones from the image
2360: if ($iwidth && $iheight) {
2361: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2362: $token->[2]{'width'} = $iwidth;$ctag=1;
2363: }
2364: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2365: $token->[2]{'height'}=$iheight;$ctag=1;
2366: }
2367: }
2368: }
2369: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2370: # if we don't have a width or height
2371: if ($iwidth && $cwidth && !$cheight) {
2372: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2373: }
2374: if ($iheight && $cheight && !$cwidth) {
2375: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2376: }
2377: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2378: }
2379: return $currentstring;
2380: }
2381:
2382: sub end_img {
2383: my ($target,$token) = @_;
2384: my $currentstring = '';
2385: if ($target eq 'web') {
2386: $currentstring = $token->[2];
2387: } elsif ($target eq 'tex') {
2388: $currentstring = '';
2389: }
2390: return $currentstring;
2391: }
2392:
2393: #-- <applet> tag (end tag required)
2394: sub start_applet {
2395: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2396:
2397: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2398: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2399:
2400: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2401: undef,1);
2402: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2403:
2404: my $currentstring = '';
2405: if ($target eq 'web') {
2406: if ($ENV{'browser.appletsuppress'} ne 'on') {
2407: $currentstring = $token->[4];
2408: } else {
2409: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2410: $safeeval,undef,1);
2411: unless ($alttag) {
2412: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2413: $code);
2414: }
2415: $currentstring='[APPLET: '.$alttag.']';
2416: }
2417: } elsif ($target eq 'tex') {
2418: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2419: $safeeval,undef,1);
2420: unless ($alttag) {
2421: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2422: undef,1);
2423: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2424: $code);
2425: }
2426: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2427: '.}\end{center}';
2428: }
2429: return $currentstring;
2430: }
2431:
2432: sub end_applet {
2433: my ($target,$token) = @_;
2434: my $currentstring = '';
2435: if ($target eq 'web') {
2436: $currentstring = $token->[2];
2437: } elsif ($target eq 'tex') {
2438: }
2439: return $currentstring;
2440: }
2441:
2442: #-- <embed> tag (end tag optional/required)
2443: sub start_embed {
2444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2445: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2446: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2447: my $currentstring = '';
2448: if ($target eq 'web') {
2449: if ($ENV{'browser.embedsuppress'} ne 'on') {
2450: $currentstring = $token->[4];
2451: } else {
2452: my $alttag=&Apache::lonxml::get_param
2453: ('alt',$parstack,$safeeval,undef,1);
2454: unless ($alttag) {
2455: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2456: }
2457: $currentstring='[EMBED: '.$alttag.']';
2458: }
2459: } elsif ($target eq 'tex') {
2460: }
2461: return $currentstring;
2462: }
2463:
2464: sub end_embed {
2465: my ($target,$token) = @_;
2466: my $currentstring = '';
2467: if ($target eq 'web') {
2468: $currentstring = $token->[2];
2469: } elsif ($target eq 'tex') {
2470: }
2471: return $currentstring;
2472: }
2473:
2474: #-- <param> tag (end tag forbidden)
2475: sub start_param {
2476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2477: if (&Apache::lonxml::get_param
2478: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2479: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2480: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2481: }
2482: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2483: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2484: my $currentstring = '';
2485: if ($target eq 'web') {
2486: $currentstring = $token->[4];
2487: } elsif ($target eq 'tex') {
2488: }
2489: return $currentstring;
2490: }
2491:
2492: sub end_param {
2493: my ($target,$token) = @_;
2494: my $currentstring = '';
2495: if ($target eq 'web') {
2496: $currentstring = $token->[2];
2497: } elsif ($target eq 'tex') {
2498: }
2499: return $currentstring;
2500: }
2501:
2502: #-- <allow> tag
2503: sub start_allow {
2504: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2505: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2506: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2507: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2508: &Apache::lonnet::clutter($src);
2509: &image_replication($src);
2510: my $result;
2511: if ($target eq 'edit') {
2512: $result .=&Apache::edit::tag_start($target,$token);
2513: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2514: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2515: } elsif ($target eq 'modified') {
2516: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2517: $safeeval,'src');
2518: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2519: }
2520: return $result;
2521: }
2522:
2523: sub end_allow {
2524: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2525: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2526: return '';
2527: }
2528:
2529: #-- Frames (end tag required)
2530: #-- <frameset>
2531: sub start_frameset {
2532: my ($target,$token) = @_;
2533: my $currentstring = '';
2534: if ($target eq 'web') {
2535: if (!$Apache::lonxml::registered &&
2536: $ENV{'request.state'} eq 'published') {
2537: $currentstring.='<head>'.
2538: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2539: }
2540: my $onLoad='';
2541: foreach my $key (keys(%{$token->[2]})) {
2542: if ($key =~ /^onload$/i) {
2543: $onLoad.=$token->[2]->{$key}.';';
2544: delete($token->[2]->{$key});
2545: }
2546: }
2547: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2548: my $onUnload='';
2549: foreach my $key (keys(%{$token->[2]})) {
2550: if ($key =~ /^onunload$/i) {
2551: $onUnload.=$token->[2]->{$key}.';';
2552: delete($token->[2]->{$key});
2553: }
2554: }
2555: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2556: ';'.$onUnload;
2557:
2558: $currentstring .= '<'.$token->[1];
2559: foreach (keys %{$token->[2]}) {
2560: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2561: }
2562: $currentstring.='>';
2563: }
2564: return $currentstring;
2565: }
2566:
2567: sub end_frameset {
2568: my ($target,$token) = @_;
2569: my $currentstring = '';
2570: if ($target eq 'web') {
2571: $currentstring = $token->[2];
2572: }
2573: return $currentstring;
2574: }
2575:
2576: #-- <xmp> (end tag required)
2577: sub start_xmp {
2578: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2579: my $currentstring = '';
2580: if ($target eq 'web') {
2581: $currentstring .= $token->[4];
2582: } elsif ($target eq 'tex') {
2583: $currentstring .= '\begin{verbatim}';
2584: }
2585: return $currentstring;
2586: }
2587:
2588: sub end_xmp {
2589: my ($target,$token) = @_;
2590: my $currentstring = '';
2591: if ($target eq 'web') {
2592: $currentstring .= $token->[2];
2593: } elsif ($target eq 'tex') {
2594: $currentstring .= '\end{verbatim}';
2595: }
2596: return $currentstring;
2597: }
2598:
2599: #-- <pre> (end tag required)
2600: sub start_pre {
2601: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2602: my $currentstring = '';
2603: if ($target eq 'web') {
2604: $currentstring .= $token->[4];
2605: } elsif ($target eq 'tex') {
2606: $currentstring .= '\begin{verbatim}';
2607: }
2608: return $currentstring;
2609: }
2610:
2611: sub end_pre {
2612: my ($target,$token) = @_;
2613: my $currentstring = '';
2614: if ($target eq 'web') {
2615: $currentstring .= $token->[2];
2616: } elsif ($target eq 'tex') {
2617: $currentstring .= '\end{verbatim}';
2618: }
2619: return $currentstring;
2620: }
2621:
2622: #-- <insert>
2623: sub start_insert {
2624: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2625: my $currentstring = '';
2626: if ($target eq 'web') {
2627: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2628: $currentstring .= '<b>'.$display.'</b>';;
2629: }
2630: return $currentstring;
2631: }
2632:
2633: sub end_insert {
2634: my ($target,$token) = @_;
2635: my $currentstring = '';
2636: if ($target eq 'web') {
2637: $currentstring .= '';
2638: }
2639: return $currentstring;
2640: }
2641:
2642: #-- <externallink>
2643: sub start_externallink {
2644: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2645: my $currentstring = '';
2646: if ($target eq 'web') {
2647: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2648: $currentstring .= '<b>'.$display.'</b>';;
2649: }
2650: return $currentstring;
2651: }
2652:
2653: sub end_externallink {
2654: my ($target,$token) = @_;
2655: my $currentstring = '';
2656: if ($target eq 'web') {
2657: $currentstring .= '';
2658: }
2659: return $currentstring;
2660: }
2661:
2662: #-- <blankspace heigth="">
2663: sub start_blankspace {
2664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2665: my $currentstring = '';
2666: if ($target eq 'tex') {
2667: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2668: $currentstring .= '\vskip '.$howmuch.' ';
2669: }
2670: return $currentstring;
2671: }
2672:
2673: sub end_blankspace {
2674: my ($target,$token) = @_;
2675: my $currentstring = '';
2676: if ($target eq 'tex') {
2677: $currentstring .= '';
2678: }
2679: return $currentstring;
2680: }
2681:
2682: #-- <abbr> tag (end tag required)
2683: sub start_abbr {
2684: my ($target,$token) = @_;
2685: my $currentstring = '';
2686: if ($target eq 'web') {
2687: $currentstring = $token->[4];
2688: }
2689: return $currentstring;
2690: }
2691:
2692: sub end_abbr {
2693: my ($target,$token) = @_;
2694: my $currentstring = '';
2695: if ($target eq 'web') {
2696: $currentstring = $token->[2];
2697: }
2698: return $currentstring;
2699: }
2700:
2701: #-- <acronym> tag (end tag required)
2702: sub start_acronym {
2703: my ($target,$token) = @_;
2704: my $currentstring = '';
2705: if ($target eq 'web') {
2706: $currentstring = $token->[4];
2707: }
2708: return $currentstring;
2709: }
2710:
2711: sub end_acronym {
2712: my ($target,$token) = @_;
2713: my $currentstring = '';
2714: if ($target eq 'web') {
2715: $currentstring = $token->[2];
2716: }
2717: return $currentstring;
2718: }
2719:
2720: #-- <area> tag (end tag forbidden)
2721: sub start_area {
2722: my ($target,$token) = @_;
2723: my $currentstring = '';
2724: if ($target eq 'web') {
2725: $currentstring = $token->[4];
2726: }
2727: return $currentstring;
2728: }
2729:
2730: sub end_area {
2731: my ($target,$token) = @_;
2732: my $currentstring = '';
2733: if ($target eq 'web') {
2734: $currentstring = $token->[2];
2735: }
2736: return $currentstring;
2737: }
2738:
2739: #-- <base> tag (end tag forbidden)
2740: sub start_base {
2741: my ($target,$token) = @_;
2742: my $currentstring = '';
2743: if ($target eq 'web') {
2744: $currentstring = $token->[4];
2745: }
2746: return $currentstring;
2747: }
2748:
2749: sub end_base {
2750: my ($target,$token) = @_;
2751: my $currentstring = '';
2752: if ($target eq 'web') {
2753: $currentstring = $token->[2];
2754: }
2755: return $currentstring;
2756: }
2757:
2758: #-- <bdo> tag (end tag required)
2759: sub start_bdo {
2760: my ($target,$token) = @_;
2761: my $currentstring = '';
2762: if ($target eq 'web') {
2763: $currentstring = $token->[4];
2764: }
2765: return $currentstring;
2766: }
2767:
2768: sub end_bdo {
2769: my ($target,$token) = @_;
2770: my $currentstring = '';
2771: if ($target eq 'web') {
2772: $currentstring = $token->[2];
2773: }
2774: return $currentstring;
2775: }
2776:
2777: #-- <bgsound> tag (end tag optional)
2778: sub start_bgsound {
2779: my ($target,$token) = @_;
2780: my $currentstring = '';
2781: if ($target eq 'web') {
2782: $currentstring = $token->[4];
2783: }
2784: return $currentstring;
2785: }
2786:
2787: sub end_bgsound {
2788: my ($target,$token) = @_;
2789: my $currentstring = '';
2790: if ($target eq 'web') {
2791: $currentstring = $token->[2];
2792: }
2793: return $currentstring;
2794: }
2795:
2796: #-- <blink> tag (end tag required)
2797: sub start_blink {
2798: my ($target,$token) = @_;
2799: my $currentstring = '';
2800: if ($target eq 'web') {
2801: $currentstring = $token->[4];
2802: }
2803: return $currentstring;
2804: }
2805:
2806: sub end_blink {
2807: my ($target,$token) = @_;
2808: my $currentstring = '';
2809: if ($target eq 'web') {
2810: $currentstring = $token->[2];
2811: }
2812: return $currentstring;
2813: }
2814:
2815: #-- <blockquote> tag (end tag required)
2816: sub start_blockquote {
2817: my ($target,$token) = @_;
2818: my $currentstring = '';
2819: if ($target eq 'web') {
2820: $currentstring = $token->[4];
2821: }
2822: return $currentstring;
2823: }
2824:
2825: sub end_blockquote {
2826: my ($target,$token) = @_;
2827: my $currentstring = '';
2828: if ($target eq 'web') {
2829: $currentstring = $token->[2];
2830: }
2831: return $currentstring;
2832: }
2833:
2834: #-- <button> tag (end tag required)
2835: sub start_button {
2836: my ($target,$token) = @_;
2837: my $currentstring = '';
2838: if ($target eq 'web') {
2839: $currentstring = $token->[4];
2840: }
2841: return $currentstring;
2842: }
2843:
2844: sub end_button {
2845: my ($target,$token) = @_;
2846: my $currentstring = '';
2847: if ($target eq 'web') {
2848: $currentstring = $token->[2];
2849: }
2850: return $currentstring;
2851: }
2852:
2853: #-- <caption> tag (end tag required)
2854: sub start_caption {
2855: my ($target,$token) = @_;
2856: my $currentstring = '';
2857: if ($target eq 'web') {
2858: $currentstring = $token->[4];
2859: }
2860: return $currentstring;
2861: }
2862:
2863: sub end_caption {
2864: my ($target,$token) = @_;
2865: my $currentstring = '';
2866: if ($target eq 'web') {
2867: $currentstring = $token->[2];
2868: }
2869: return $currentstring;
2870: }
2871:
2872: #-- <col> tag (end tag forbdden)
2873: sub start_col {
2874: my ($target,$token) = @_;
2875: my $currentstring = '';
2876: if ($target eq 'web') {
2877: $currentstring = $token->[4];
2878: }
2879: return $currentstring;
2880: }
2881:
2882: sub end_col {
2883: my ($target,$token) = @_;
2884: my $currentstring = '';
2885: if ($target eq 'web') {
2886: $currentstring = $token->[2];
2887: }
2888: return $currentstring;
2889: }
2890:
2891: #-- <colgroup> tag (end tag optional)
2892: sub start_colgroup {
2893: my ($target,$token) = @_;
2894: my $currentstring = '';
2895: if ($target eq 'web') {
2896: $currentstring = $token->[4];
2897: }
2898: return $currentstring;
2899: }
2900:
2901: sub end_colgroup {
2902: my ($target,$token) = @_;
2903: my $currentstring = '';
2904: if ($target eq 'web') {
2905: $currentstring = $token->[2];
2906: }
2907: return $currentstring;
2908: }
2909:
2910: #-- <del> tag (end tag required)
2911: sub start_del {
2912: my ($target,$token) = @_;
2913: my $currentstring = '';
2914: if ($target eq 'web') {
2915: $currentstring = $token->[4];
2916: }
2917: return $currentstring;
2918: }
2919:
2920: sub end_del {
2921: my ($target,$token) = @_;
2922: my $currentstring = '';
2923: if ($target eq 'web') {
2924: $currentstring = $token->[2];
2925: }
2926: return $currentstring;
2927: }
2928:
2929: #-- <fieldset> tag (end tag required)
2930: sub start_fieldset {
2931: my ($target,$token) = @_;
2932: my $currentstring = '';
2933: if ($target eq 'web') {
2934: $currentstring = $token->[4];
2935: }
2936: return $currentstring;
2937: }
2938:
2939: sub end_fieldset {
2940: my ($target,$token) = @_;
2941: my $currentstring = '';
2942: if ($target eq 'web') {
2943: $currentstring = $token->[2];
2944: }
2945: return $currentstring;
2946: }
2947:
2948: #-- <frame> tag (end tag forbidden)
2949: sub start_frame {
2950: my ($target,$token) = @_;
2951: my $currentstring = '';
2952: if ($target eq 'web') {
2953: $currentstring = $token->[4];
2954: }
2955: return $currentstring;
2956: }
2957:
2958: sub end_frame {
2959: my ($target,$token) = @_;
2960: my $currentstring = '';
2961: if ($target eq 'web') {
2962: $currentstring = $token->[2];
2963: }
2964: return $currentstring;
2965: }
2966:
2967: #-- <iframe> tag (end tag required)
2968: sub start_iframe {
2969: my ($target,$token) = @_;
2970: my $currentstring = '';
2971: if ($target eq 'web') {
2972: $currentstring = $token->[4];
2973: }
2974: return $currentstring;
2975: }
2976:
2977: sub end_iframe {
2978: my ($target,$token) = @_;
2979: my $currentstring = '';
2980: if ($target eq 'web') {
2981: $currentstring = $token->[2];
2982: }
2983: return $currentstring;
2984: }
2985:
2986: #-- <ins> tag (end tag required)
2987: sub start_ins {
2988: my ($target,$token) = @_;
2989: my $currentstring = '';
2990: if ($target eq 'web') {
2991: $currentstring = $token->[4];
2992: }
2993: return $currentstring;
2994: }
2995:
2996: sub end_ins {
2997: my ($target,$token) = @_;
2998: my $currentstring = '';
2999: if ($target eq 'web') {
3000: $currentstring = $token->[2];
3001: }
3002: return $currentstring;
3003: }
3004:
3005: #-- <isindex> tag (end tag forbidden)
3006: sub start_isindex {
3007: my ($target,$token) = @_;
3008: my $currentstring = '';
3009: if ($target eq 'web') {
3010: $currentstring = $token->[4];
3011: }
3012: return $currentstring;
3013: }
3014:
3015: sub end_isindex {
3016: my ($target,$token) = @_;
3017: my $currentstring = '';
3018: if ($target eq 'web') {
3019: $currentstring = $token->[2];
3020: }
3021: return $currentstring;
3022: }
3023:
3024: #-- <keygen> tag (end tag forbidden)
3025: sub start_keygen {
3026: my ($target,$token) = @_;
3027: my $currentstring = '';
3028: if ($target eq 'web') {
3029: $currentstring = $token->[4];
3030: }
3031: return $currentstring;
3032: }
3033:
3034: sub end_keygen {
3035: my ($target,$token) = @_;
3036: my $currentstring = '';
3037: if ($target eq 'web') {
3038: $currentstring = $token->[2];
3039: }
3040: return $currentstring;
3041: }
3042:
3043: #-- <label> tag
3044: sub start_label {
3045: my ($target,$token) = @_;
3046: my $currentstring = '';
3047: if ($target eq 'web') {
3048: $currentstring = $token->[4];
3049: }
3050: return $currentstring;
3051: }
3052:
3053: sub end_label {
3054: my ($target,$token) = @_;
3055: my $currentstring = '';
3056: if ($target eq 'web') {
3057: $currentstring = $token->[2];
3058: }
3059: return $currentstring;
3060: }
3061:
3062: #-- <layer> tag (end tag required)
3063: sub start_layer {
3064: my ($target,$token) = @_;
3065: my $currentstring = '';
3066: if ($target eq 'web') {
3067: $currentstring = $token->[4];
3068: }
3069: return $currentstring;
3070: }
3071:
3072: sub end_layer {
3073: my ($target,$token) = @_;
3074: my $currentstring = '';
3075: if ($target eq 'web') {
3076: $currentstring = $token->[2];
3077: }
3078: return $currentstring;
3079: }
3080:
3081: #-- <legend> tag (end tag required)
3082: sub start_legend {
3083: my ($target,$token) = @_;
3084: my $currentstring = '';
3085: if ($target eq 'web') {
3086: $currentstring = $token->[4];
3087: }
3088: return $currentstring;
3089: }
3090:
3091: sub end_legend {
3092: my ($target,$token) = @_;
3093: my $currentstring = '';
3094: if ($target eq 'web') {
3095: $currentstring = $token->[2];
3096: }
3097: return $currentstring;
3098: }
3099:
3100: #-- <link> tag (end tag forbidden)
3101: sub start_link {
3102: my ($target,$token) = @_;
3103: my $currentstring = '';
3104: if ($target eq 'web') {
3105: $currentstring = $token->[4];
3106: }
3107: return $currentstring;
3108: }
3109:
3110: sub end_link {
3111: my ($target,$token) = @_;
3112: my $currentstring = '';
3113: if ($target eq 'web') {
3114: $currentstring = $token->[2];
3115: }
3116: return $currentstring;
3117: }
3118:
3119: #-- <marquee> tag (end tag optional)
3120: sub start_marquee {
3121: my ($target,$token) = @_;
3122: my $currentstring = '';
3123: if ($target eq 'web') {
3124: $currentstring = $token->[4];
3125: }
3126: return $currentstring;
3127: }
3128:
3129: sub end_marquee {
3130: my ($target,$token) = @_;
3131: my $currentstring = '';
3132: if ($target eq 'web') {
3133: $currentstring = $token->[2];
3134: }
3135: return $currentstring;
3136: }
3137:
3138: #-- <multicol> tag (end tag required)
3139: sub start_multicol {
3140: my ($target,$token) = @_;
3141: my $currentstring = '';
3142: if ($target eq 'web') {
3143: $currentstring = $token->[4];
3144: }
3145: return $currentstring;
3146: }
3147:
3148: sub end_multicol {
3149: my ($target,$token) = @_;
3150: my $currentstring = '';
3151: if ($target eq 'web') {
3152: $currentstring = $token->[2];
3153: }
3154: return $currentstring;
3155: }
3156:
3157: #-- <nobr> tag (end tag required)
3158: sub start_nobr {
3159: my ($target,$token) = @_;
3160: my $currentstring = '';
3161: if ($target eq 'web') {
3162: $currentstring = $token->[4];
3163: } elsif ($target eq 'tex') {
3164: $currentstring='\mbox{';
3165: }
3166: return $currentstring;
3167: }
3168:
3169: sub end_nobr {
3170: my ($target,$token) = @_;
3171: my $currentstring = '';
3172: if ($target eq 'web') {
3173: $currentstring = $token->[2];
3174: } elsif ($target eq 'tex') {
3175: $currentstring='}';
3176: }
3177: return $currentstring;
3178: }
3179:
3180: #-- <noembed> tag (end tag required)
3181: sub start_noembed {
3182: my ($target,$token) = @_;
3183: my $currentstring = '';
3184: if ($target eq 'web') {
3185: $currentstring = $token->[4];
3186: }
3187: return $currentstring;
3188: }
3189:
3190: sub end_noembed {
3191: my ($target,$token) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web') {
3194: $currentstring = $token->[2];
3195: }
3196: return $currentstring;
3197: }
3198:
3199: #-- <noframes> tag (end tag required)
3200: sub start_noframes {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web') {
3204: $currentstring = $token->[4];
3205: }
3206: return $currentstring;
3207: }
3208:
3209: sub end_noframes {
3210: my ($target,$token) = @_;
3211: my $currentstring = '';
3212: if ($target eq 'web') {
3213: $currentstring = $token->[2];
3214: }
3215: return $currentstring;
3216: }
3217:
3218: #-- <nolayer> tag (end tag required)
3219: sub start_nolayer {
3220: my ($target,$token) = @_;
3221: my $currentstring = '';
3222: if ($target eq 'web') {
3223: $currentstring = $token->[4];
3224: }
3225: return $currentstring;
3226: }
3227:
3228: sub end_nolayer {
3229: my ($target,$token) = @_;
3230: my $currentstring = '';
3231: if ($target eq 'web') {
3232: $currentstring = $token->[2];
3233: }
3234: return $currentstring;
3235: }
3236:
3237: #-- <noscript> tag (end tag required)
3238: sub start_noscript {
3239: my ($target,$token) = @_;
3240: my $currentstring = '';
3241: if ($target eq 'web') {
3242: $currentstring = $token->[4];
3243: }
3244: return $currentstring;
3245: }
3246:
3247: sub end_noscript {
3248: my ($target,$token) = @_;
3249: my $currentstring = '';
3250: if ($target eq 'web') {
3251: $currentstring = $token->[2];
3252: }
3253: return $currentstring;
3254: }
3255:
3256: #-- <object> tag (end tag required)
3257: sub start_object {
3258: my ($target,$token) = @_;
3259: my $currentstring = '';
3260: if ($target eq 'web') {
3261: $currentstring = $token->[4];
3262: }
3263: return $currentstring;
3264: }
3265:
3266: sub end_object {
3267: my ($target,$token) = @_;
3268: my $currentstring = '';
3269: if ($target eq 'web') {
3270: $currentstring = $token->[2];
3271: }
3272: return $currentstring;
3273: }
3274:
3275: #-- <optgroup> tag (end tag required)
3276: sub start_optgroup {
3277: my ($target,$token) = @_;
3278: my $currentstring = '';
3279: if ($target eq 'web') {
3280: $currentstring = $token->[4];
3281: }
3282: return $currentstring;
3283: }
3284:
3285: sub end_optgroup {
3286: my ($target,$token) = @_;
3287: my $currentstring = '';
3288: if ($target eq 'web') {
3289: $currentstring = $token->[2];
3290: }
3291: return $currentstring;
3292: }
3293:
3294: #-- <samp> tag (end tag required)
3295: sub start_samp {
3296: my ($target,$token) = @_;
3297: my $currentstring = '';
3298: if ($target eq 'web') {
3299: $currentstring = $token->[4];
3300: } elsif ($target eq 'tex') {
3301: $currentstring='\texttt{';
3302: }
3303: return $currentstring;
3304: }
3305:
3306: sub end_samp {
3307: my ($target,$token) = @_;
3308: my $currentstring = '';
3309: if ($target eq 'web') {
3310: $currentstring = $token->[2];
3311: } elsif ($target eq 'tex') {
3312: $currentstring='}';
3313: }
3314: return $currentstring;
3315: }
3316:
3317: #-- <server> tag
3318: sub start_server {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[4];
3323: }
3324: return $currentstring;
3325: }
3326:
3327: sub end_server {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[2];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: #-- <spacer> tag (end tag forbidden)
3337: sub start_spacer {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web') {
3341: $currentstring = $token->[4];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: sub end_spacer {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[2];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: #-- <span> tag (end tag required)
3356: sub start_span {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web') {
3360: $currentstring = $token->[4];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: sub end_span {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[2];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: #-- <tbody> tag (end tag optional)
3375: sub start_tbody {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web') {
3379: $currentstring = $token->[4];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: sub end_tbody {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[2];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: #-- <tfoot> tag (end tag optional)
3394: sub start_tfoot {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web') {
3398: $currentstring = $token->[4];
3399: }
3400: return $currentstring;
3401: }
3402:
3403: sub end_tfoot {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[2];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: #-- <thead> tag (end tag optional)
3413: sub start_thead {
3414: my ($target,$token) = @_;
3415: my $currentstring = '';
3416: if ($target eq 'web') {
3417: $currentstring = $token->[4];
3418: }
3419: return $currentstring;
3420: }
3421:
3422: sub end_thead {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[2];
3427: }
3428: return $currentstring;
3429: }
3430:
3431: #-- <var> tag
3432: sub start_var {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web') {
3436: $currentstring = $token->[4];
3437: } elsif ($target eq 'tex') {
3438: $currentstring = '\textit{';
3439: }
3440: return $currentstring;
3441: }
3442:
3443: sub end_var {
3444: my ($target,$token) = @_;
3445: my $currentstring = '';
3446: if ($target eq 'web') {
3447: $currentstring = $token->[2];
3448: } elsif ($target eq 'tex') {
3449: $currentstring = '}';
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <wbr> tag (end tag forbidden)
3455: sub start_wbr {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web') {
3459: $currentstring = $token->[4];
3460: }
3461: return $currentstring;
3462: }
3463:
3464: sub end_wbr {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web') {
3468: $currentstring = $token->[2];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: #-- <hideweboutput> tag
3474: sub start_hideweboutput {
3475: my ($target,$token) = @_;
3476: if ($target eq 'web') {
3477: &Apache::lonxml::startredirection();
3478: }
3479: return '';
3480: }
3481:
3482: sub end_hideweboutput {
3483: my ($target,$token) = @_;
3484: my $currentstring = '';
3485: if ($target eq 'web') {
3486: $currentstring = &Apache::lonxml::endredirection();
3487: }
3488: return '';
3489: }
3490:
3491:
3492: sub image_replication {
3493: my $src = shift;
3494: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3495: #replicates eps or ps
3496: my $epssrc = my $pssrc = $src;
3497: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3498: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3499: if (not -e $epssrc && not -e $pssrc) {
3500: my $result=&Apache::lonnet::repcopy($epssrc);
3501: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3502: }
3503: return '';
3504: }
3505:
3506: sub image_size {
3507: my ($src,$scaling,$parstack,$safeeval)=@_;
3508: #size of image from gif/jpg/jpeg/png
3509: my $image = Image::Magick->new;
3510: my $current_figure = $image->Read($src);
3511: my $width_param = $image->Get('width') * $scaling;;
3512: my $height_param = $image->Get('height') * $scaling;;
3513: undef $image;
3514: #do we have any specified LaTeX size of the picture?
3515: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3516: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3517: #do we have any specified web size of the picture?
3518: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3519: undef,1);
3520: if ($TeXwidth ne '') {
3521: if ($TeXwidth=~/(\d+)\s*\%/) {
3522: $width_param = $1*$ENV{'form.textwidth'}/100;
3523: } else {
3524: $width_param = $TeXwidth;
3525: }
3526: } elsif ($TeXheight ne '') {
3527: $width_param = $TeXheight/$height_param*$width_param;
3528: } elsif ($width ne '') {
3529: $width_param = $width*$scaling;
3530: }
3531: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3532: return $width_param;
3533: }
3534:
3535: sub eps_generation {
3536: my ($src,$file,$width_param) = @_;
3537: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3538: my $temp_file = Apache::File->new('>>'.$filename);
3539: print $temp_file "$src\n";
3540: my $newsrc = $src;
3541: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3542: $newsrc=~s/\/home\/httpd\/html\/res//;
3543: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3544: $newsrc=~s/\/\.\//\//;
3545: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3546: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3547: $newsrc=~s/\/home\/httpd\/lonUsers//;
3548: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3549: }
3550: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3551: }
3552:
3553: sub file_path {
3554: my $src=shift;
3555: my ($file,$path);
3556: if ($src =~ m!(.*)/([^/]*)$!) {
3557: $file = $2;
3558: $path = $1.'/';
3559: }
3560: return $file,$path;
3561: }
3562:
3563: sub recalc {
3564: my $argument = shift;
3565: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3566: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3567: my $value=$1;
3568: my $units=$2;
3569: if ($units eq 'cm') {
3570: $value*=10;
3571: } elsif ($units eq 'in') {
3572: $value*=25.4;
3573: } elsif ($units eq 'pc') {
3574: $value*=(25.4*12/72.27);
3575: } elsif ($units eq 'pt') {
3576: $value*=(25.4/72.27);
3577: }
3578: return $value.' mm';
3579: }
3580:
3581: sub LATEX_length {
3582: my $garbage=shift;
3583: $garbage=~s/^\s+$//;
3584: $garbage=~s/^\s+(\S.*)/$1/;#space before
3585: $garbage=~s/(.*\S)\s+$/$1/;#space after
3586: $garbage=~s/(\s)+/$1/;#only one space
3587: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3588: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3589: $garbage=~s/([^\\])\$/$1/g;#$
3590: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3591: $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;
3592: $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;
3593: $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;
3594: $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;
3595: $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;
3596: $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;
3597: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3598: #remove some other LaTeX command
3599: $garbage=~s|\\(\w+)\\|\\|g;
3600: $garbage=~s|\\(\w+)(\s*)|$2|g;
3601: $garbage=~s|\+|11|g;
3602:
3603: &Apache::lonnet::logthis("garbage was just $garbage");
3604: my $value=length($garbage);
3605: return $value;
3606: }
3607:
3608:
3609:
3610:
3611: 1;
3612: __END__
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