1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.225 2004/07/12 16:11:30 sakharuk Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $inside ='\\documentstyle{article}'.$inside;
90: &Apache::lonxml::debug("M is starting with:$inside:");
91: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
92: if ($eval eq 'on') {
93: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
94: #&Apache::lonxml::debug("M is evaulated to:$inside:");
95: }
96: $currentstring = &Apache::lontexconvert::converted(\$inside);
97: if ($Apache::lontexconvert::errorstring) {
98: &Apache::lonxml::warning("tth error: ".
99: $Apache::lontexconvert::errorstring);
100: $Apache::lontexconvert::errorstring='';
101: }
102: #&Apache::lonxml::debug("M is ends with:$currentstring:");
103: $Apache::lonxml::post_evaluate=0;
104: } elsif ($target eq 'tex') {
105: $currentstring = $inside;
106: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
107: if ($eval eq 'on') {
108: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
109: }
110: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
111: $Apache::lonxml::post_evaluate=0;
112: }
113: return $currentstring;
114: }
115:
116: sub end_m {
117: my ($target,$token) = @_;
118: my $currentstring = '';
119: if ($target eq 'tex') {
120: $currentstring = "";
121: }
122: return $currentstring;
123: }
124:
125: sub start_tthoption {
126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
127: my $result;
128: if ($target eq 'web') {
129: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
130: $inside=~s/^\s*//;
131: if ($ENV{'browser.mathml'}) {
132: &tth::ttmoptions($inside);
133: } else {
134: &tth::tthoptions($inside);
135: }
136: }
137: return $result;
138: }
139:
140: sub end_tthoption {
141: my ($target,$token) = @_;
142: my $result;
143: return $result;
144: }
145:
146: #-- <html> tag (end tag optional)
147: sub start_html {
148: my ($target,$token) = @_;
149: my $currentstring = '';
150: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
151: &Apache::lontexconvert::init_tth();
152: if ($target eq 'web' || $target eq 'edit') {
153: $currentstring = &Apache::lonxml::xmlbegin().
154: &Apache::lonxml::fontsettings();
155: } elsif ($target eq 'tex') {
156: @Apache::londefdef::table = ();
157: $currentstring .= '\documentclass[letterpaper]{article}';
158: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
159: $currentstring .= '\newcommand{\keephidden}[1]{}'.
160: '\renewcommand{\deg}{$^{\circ}$}'.
161: '\usepackage{longtable}'.
162: '\usepackage{textcomp}'.
163: '\usepackage{makeidx}'.
164: '\usepackage[dvips]{graphicx}'.
165: '\usepackage{epsfig}'.
166: '\usepackage{calc}'.
167: '\usepackage{amsmath}'.
168: '\usepackage{amssymb}'.
169: '\usepackage{amsfonts}'.
170: '\usepackage{amsthm}'.
171: '\usepackage{amscd}'.
172: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
173: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
174: }
175: return $currentstring;
176: }
177:
178: sub end_html {
179: my ($target,$token) = @_;
180: my $currentstring = '';
181: if ($target eq 'web') {
182: $currentstring = &Apache::lonxml::xmlend();
183: }
184: return $currentstring;
185: }
186:
187: #-- <head> tag (end tag optional)
188: sub start_head {
189: my ($target,$token) = @_;
190: my $currentstring = '';
191: if ($target eq 'web') {
192: $currentstring = $token->[4];
193: }
194: return $currentstring;
195: }
196:
197: sub end_head {
198: my ($target,$token) = @_;
199: my $currentstring = '';
200: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
201: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
202: $token->[2];
203: }
204: return $currentstring;
205: }
206:
207: #-- <map> tag (end tag required)
208: sub start_map {
209: my ($target,$token) = @_;
210: my $currentstring = '';
211: if ($target eq 'web') {
212: $currentstring = $token->[4];
213: }
214: return $currentstring;
215: }
216:
217: sub end_map {
218: my ($target,$token) = @_;
219: my $currentstring = '';
220: if ($target eq 'web') {
221: $currentstring = $token->[2];
222: }
223: return $currentstring;
224: }
225:
226: #-- <select> tag (end tag required)
227: sub start_select {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web') {
231: $currentstring = $token->[4];
232: } elsif ($target eq 'tex') {
233: $Apache::londefdef::select=0;
234: }
235: return $currentstring;
236: }
237:
238: sub end_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web') {
242: $currentstring = $token->[2];
243: }
244: return $currentstring;
245: }
246:
247: #-- <option> tag (end tag optional)
248: sub start_option {
249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
250: my $currentstring = '';
251: if ($target eq 'web') {
252: $currentstring = $token->[4];
253: } elsif ($target eq 'tex') {
254: $Apache::londefdef::select++;
255: if ($Apache::londefdef::select == 1) {
256: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
257: } else {
258: $currentstring='\keephidden{';
259: }
260: }
261: return $currentstring;
262: }
263:
264: sub end_option {
265: my ($target,$token) = @_;
266: my $currentstring = '';
267: if ($target eq 'web') {
268: $currentstring = $token->[2];
269: } elsif ($target eq 'tex') {
270: $currentstring='}';
271: }
272: return $currentstring;
273: }
274:
275: #-- <input> tag (end tag forbidden)
276: sub start_input {
277: my ($target,$token) = @_;
278: my $currentstring = '';
279: if ($target eq 'web') {
280: $currentstring = $token->[4];
281: }
282: return $currentstring;
283: }
284:
285: sub end_input {
286: my ($target,$token) = @_;
287: my $currentstring = '';
288: if ($target eq 'web') {
289: $currentstring = $token->[2];
290: }
291: return $currentstring;
292: }
293:
294: #-- <textarea> tag (end tag required)
295: sub start_textarea {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web') {
299: $currentstring = $token->[4];
300: }
301: return $currentstring;
302: }
303:
304: sub end_textarea {
305: my ($target,$token) = @_;
306: my $currentstring = '';
307: if ($target eq 'web') {
308: $currentstring = $token->[2];
309: }
310: return $currentstring;
311: }
312:
313: #-- <form> tag (end tag required)
314: sub start_form {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web') {
318: $currentstring = $token->[4];
319: }
320: return $currentstring;
321: }
322:
323: sub end_form {
324: my ($target,$token) = @_;
325: my $currentstring = '';
326: if ($target eq 'web') {
327: $currentstring = $token->[2];
328: }
329: return $currentstring;
330: }
331:
332: #-- <title> tag (end tag required)
333: sub start_title {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web') {
337: $currentstring = $token->[4];
338: } elsif ($target eq 'tex') {
339: $currentstring .= '\keephidden{Title of the document: '
340: }
341: if ($target eq 'meta') {
342: $currentstring='<title>';
343: &start_output($target);
344: }
345: return $currentstring;
346: }
347:
348: sub end_title {
349: my ($target,$token) = @_;
350: my $currentstring = '';
351: if ($target eq 'web') {
352: $currentstring = $token->[2];
353: } elsif ($target eq 'tex') {
354: $currentstring .= '}';
355: }
356: if ($target eq 'meta') {
357: &end_output($target);
358: $currentstring='</title>';
359: }
360: return $currentstring;
361: }
362:
363: #-- <meta> tag (end tag forbidden)
364: sub start_meta {
365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
366: my $currentstring = '';
367: if ($target eq 'web') {
368: my $args='';
369: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
370: if ($args eq '') {
371: &Apache::lonxml::get_all_text("/meta",$parser);
372: } else {
373: $currentstring = $token->[4];
374: }
375: } elsif ($target eq 'meta') {
376: unless (&Apache::lonxml::get_param
377: ('http-equiv',$parstack,$safeeval,undef,1)) {
378: my $name=$token->[2]->{'name'};
379: $name=~tr/A-Z/a-z/;
380: $name=~s/\s/\_/gs;
381: $name=~s/\W//gs;
382: if ($name) {
383: $currentstring='<'.$name;
384: my $display=&Apache::lonxml::get_param
385: ('display',$parstack,$safeeval,undef,1);
386: if ($display) {
387: $display=~s/\"/\'/g;
388: $currentstring.=' display="'.$display.'"';
389: }
390: $currentstring.='>'.
391: &Apache::lonxml::get_param
392: ('content',$parstack,$safeeval,undef,1).
393: '</'.$name.'>';
394: }
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=&HTML::Entities::encode($display,'<>&"');
399: $currentstring.='<'.$name.'.display>'.$display.
400: '</'.$name.'.display>';
401: }
402: }
403: } elsif ($target eq 'tex') {
404: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
405: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
406: if ((not defined $content) && (not defined $name)) {
407: &Apache::lonxml::startredirection();
408: }
409: }
410: return $currentstring;
411: }
412:
413: sub end_meta {
414: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
415: my $currentstring = '';
416: if ($target eq 'web') {
417: my $args='';
418: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
419: if ($args ne '') {
420: $currentstring = $token->[4];
421: }
422: } elsif ($target eq 'tex') {
423: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
424: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
425: if ((not defined $content) && (not defined $name)) {
426: &Apache::lonxml::endredirection();
427: }
428: }
429: return $currentstring;
430: }
431:
432: # accessrule
433: sub start_accessrule {
434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
435: my $currentstring = '';
436: my $eff=&Apache::lonxml::get_param
437: ('effect',$parstack,$safeeval,undef,1);
438: my $realm=&Apache::lonxml::get_param
439: ('realm',$parstack,$safeeval,undef,1);
440: my $role=&Apache::lonxml::get_param
441: ('role',$parstack,$safeeval,undef,1);
442: $realm=~s/\s+//g;
443: $realm=~s/\//\_/g;
444: $realm=~s/^\_//;
445: $realm=~s/\W/\;/g;
446: $role=~s/\s+//g;
447: $role=~s/\//\_/g;
448: $role=~s/\W/\;/g;
449: if ($target eq 'web') {
450: my $args='';
451: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
452: if ($args eq '') {
453: &Apache::lonxml::get_all_text("/accessrule",$parser);
454: } else {
455: $currentstring = $token->[4];
456: }
457: }
458: if ($target eq 'meta') {
459: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
460: }
461: return $currentstring;
462: }
463:
464: sub end_accessrule {
465: my ($target,$token,$tagstack,$parstack,$parser) = @_;
466: my $currentstring = '';
467: if ($target eq 'web') {
468: my $args='';
469: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
470: if ($args ne '') {
471: $currentstring = $token->[4];
472: }
473: }
474: return $currentstring;
475: }
476:
477: #-- <body> tag (end tag required)
478: sub start_body {
479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
480: my $currentstring = '';
481: if ($target eq 'web') {
482: if ($Apache::lonhomework::parsing_a_problem) {
483: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
484: return '';
485: }
486: if (!$Apache::lonxml::registered &&
487: $ENV{'request.state'} eq 'published') {
488: $currentstring.='<head>'.
489: &Apache::lonmenu::registerurl(undef,$target).'</head>';
490: }
491: # Accessibility
492: if ($ENV{'browser.imagesuppress'} eq 'on') {
493: delete($token->[2]->{'background'});
494: }
495: if ($ENV{'browser.fontenhance'} eq 'on') {
496: my $style='';
497: foreach my $key (keys(%{$token->[2]})) {
498: if ($key =~ /^style$/i) {
499: $style.=$token->[2]->{$key}.';';
500: delete($token->[2]->{$key});
501: }
502: }
503: $token->[2]->{'style'}=$style.'; font-size: x-large;';
504: }
505: if ($ENV{'browser.blackwhite'} eq 'on') {
506: delete($token->[2]->{'font'});
507: delete($token->[2]->{'link'});
508: delete($token->[2]->{'alink'});
509: delete($token->[2]->{'vlink'});
510: delete($token->[2]->{'bgcolor'});
511: delete($token->[2]->{'background'});
512: }
513: # Overload loads
514: my $onLoad='';
515: foreach my $key (keys(%{$token->[2]})) {
516: if ($key =~ /^onload$/i) {
517: $onLoad.=$token->[2]->{$key}.';';
518: delete($token->[2]->{$key});
519: }
520: }
521: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
522: my $onUnload='';
523: foreach my $key (keys(%{$token->[2]})) {
524: if ($key =~ /^onunload$/i) {
525: $onUnload.=$token->[2]->{$key}.';';
526: delete($token->[2]->{$key});
527: }
528: }
529: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
530: ';'.$onUnload;
531:
532: $currentstring .= '<'.$token->[1];
533: foreach (keys %{$token->[2]}) {
534: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
535: }
536: $currentstring.='>';
537: if ($ENV{'request.state'} ne 'published') {
538: $currentstring.=(<<EDITBUTTON);
539: <form method="post">
540: <input type="submit" name="editmode" accesskey="e" value="Edit" />
541: </form>
542: EDITBUTTON
543: } else {
544: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
545: }
546: $currentstring.=&Apache::lonxml::message_location();
547: } elsif ($target eq 'tex') {
548: $currentstring = '\begin{document}';
549: }
550: return $currentstring;
551: }
552:
553: sub end_body {
554: my ($target,$token) = @_;
555: my $currentstring = '';
556: if ($target eq 'web') {
557: $currentstring = $token->[2];
558: } elsif ($target eq 'tex') {
559: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
560: }
561: return $currentstring;
562: }
563:
564: #-- <center> tag (end tag required)
565: sub start_center {
566: my ($target,$token) = @_;
567: my $currentstring = '';
568: if ($target eq 'web') {
569: $currentstring = $token->[4];
570: } elsif ($target eq 'tex') {
571: $currentstring = '\begin{center}';
572: }
573: return $currentstring;
574: }
575:
576: sub end_center {
577: my ($target,$token) = @_;
578: my $currentstring = '';
579: if ($target eq 'web') {
580: $currentstring = $token->[2];
581: } elsif ($target eq 'tex') {
582: $currentstring = '\end{center}';
583: }
584: return $currentstring;
585: }
586:
587: #-- <b> tag (end tag required)
588: sub start_b {
589: my ($target,$token) = @_;
590: my $currentstring = '';
591: if ($target eq 'web') {
592: $currentstring = $token->[4];
593: } elsif ($target eq 'tex') {
594: $currentstring = '\textbf{';
595: }
596: return $currentstring;
597: }
598:
599: sub end_b {
600: my ($target,$token) = @_;
601: my $currentstring = '';
602: if ($target eq 'web') {
603: $currentstring = $token->[2];
604: } elsif ($target eq 'tex') {
605: $currentstring = '}';
606: }
607: return $currentstring;
608: }
609:
610: #-- <strong> tag (end tag required)
611: sub start_strong {
612: my ($target,$token) = @_;
613: my $currentstring = '';
614: if ($target eq 'web') {
615: $currentstring = $token->[4];
616: } elsif ($target eq 'tex') {
617: $currentstring = '\textbf{';
618: }
619: return $currentstring;
620: }
621:
622: sub end_strong {
623: my ($target,$token) = @_;
624: my $currentstring = '';
625: if ($target eq 'web') {
626: $currentstring = $token->[2];
627: } elsif ($target eq 'tex') {
628: $currentstring = '}';
629: }
630: return $currentstring;
631: }
632:
633: #-- <h1> tag (end tag required)
634: sub start_h1 {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
636: my $currentstring = '';
637: if ($target eq 'web') {
638: $currentstring .= $token->[4];
639: } elsif ($target eq 'tex') {
640: my $pre;
641: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
642: if ($align eq 'center') {
643: $pre='\begin{center}';
644: } elsif ($align eq 'left') {
645: $pre='\rlap{';
646: } elsif ($align eq 'right') {
647: $pre=' \hfill \llap{';
648: }
649: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
650: if (not defined $TeXsize) {$TeXsize="large";}
651: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
652: } elsif ($target eq 'meta') {
653: $currentstring='<subject>';
654: &start_output($target);
655: }
656: return $currentstring;
657: }
658:
659: sub end_h1 {
660: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
661: my $currentstring = '';
662: if ($target eq 'web') {
663: $currentstring .= $token->[2];
664: } elsif ($target eq 'tex') {
665: my $post='\vskip 0 mm ';
666: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
667: if ($align eq 'center') {
668: $post='\end{center}';
669: } elsif ($align eq 'left') {
670: $post='} \hfill'.'\vskip 0 mm ';
671: } elsif ($align eq 'right') {
672: $post='}'.'\vskip 0 mm ';
673: }
674: $currentstring .= '}}'.$post;
675: } elsif ($target eq 'meta') {
676: &end_output($target);
677: $currentstring='</subject>';
678: }
679: return $currentstring;
680: }
681:
682: #-- <h2> tag
683: sub start_h2 {
684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
685: my $currentstring = '';
686: if ($target eq 'web') {
687: $currentstring .= $token->[4];
688: } elsif ($target eq 'tex') {
689: my $pre;
690: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
691: if ($align eq 'center') {
692: $pre='\begin{center}';
693: } elsif ($align eq 'left') {
694: $pre='\rlap{';
695: } elsif ($align eq 'right') {
696: $pre=' \hfill \llap{';
697: }
698: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
699: if (not defined $TeXsize) {$TeXsize="large";}
700: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_h2 {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
707: my $currentstring = '';
708: if ($target eq 'web') {
709: $currentstring .= $token->[2];
710: } elsif ($target eq 'tex') {
711: my $post='\vskip 0 mm ';
712: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
713: if ($align eq 'center') {
714: $post='\end{center}';
715: } elsif ($align eq 'left') {
716: $post='} \hfill'.'\vskip 0 mm ';
717: } elsif ($align eq 'right') {
718: $post='}'.'\vskip 0 mm ';
719: }
720: $currentstring .= '}}'.$post;
721: }
722: return $currentstring;
723: }
724:
725: #-- <h3> tag
726: sub start_h3 {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
728: my $currentstring = '';
729: if ($target eq 'web') {
730: $currentstring .= $token->[4];
731: } elsif ($target eq 'tex') {
732: my $pre;
733: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
734: if ($align eq 'center') {
735: $pre='\begin{center}';
736: } elsif ($align eq 'left') {
737: $pre='\rlap{';
738: } elsif ($align eq 'right') {
739: $pre=' \hfill \llap{';
740: }
741: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
742: if (not defined $TeXsize) {$TeXsize="large";}
743: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
744: }
745: return $currentstring;
746: }
747:
748: sub end_h3 {
749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
750: my $currentstring = '';
751: if ($target eq 'web') {
752: $currentstring .= $token->[2];
753: } elsif ($target eq 'tex') {
754: my $post='\vskip 0 mm ';
755: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
756: if ($align eq 'center') {
757: $post='\end{center}';
758: } elsif ($align eq 'left') {
759: $post='} \hfill'.'\vskip 0 mm ';
760: } elsif ($align eq 'right') {
761: $post='}'.'\vskip 0 mm ';
762: }
763: $currentstring .= '}}'.$post;
764: }
765: return $currentstring;
766: }
767:
768: #-- <h4> tag
769: sub start_h4 {
770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
771: my $currentstring = '';
772: if ($target eq 'web') {
773: $currentstring .= $token->[4];
774: } elsif ($target eq 'tex') {
775: my $pre;
776: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
777: if ($align eq 'center') {
778: $pre='\begin{center}';
779: } elsif ($align eq 'left') {
780: $pre='\rlap{';
781: } elsif ($align eq 'right') {
782: $pre=' \hfill \llap{';
783: }
784: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
785: if (not defined $TeXsize) {$TeXsize="large";}
786: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
787: }
788: return $currentstring;
789: }
790:
791: sub end_h4 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = '';
794: if ($target eq 'web') {
795: $currentstring .= $token->[2];
796: } elsif ($target eq 'tex') {
797: my $post='\vskip 0 mm ';
798: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
799: if ($align eq 'center') {
800: $post='\end{center}';
801: } elsif ($align eq 'left') {
802: $post='} \hfill'.'\vskip 0 mm ';
803: } elsif ($align eq 'right') {
804: $post='}'.'\vskip 0 mm ';
805: }
806: $currentstring .= '}}'.$post;
807: }
808: return $currentstring;
809: }
810:
811: #-- <h5> tag
812: sub start_h5 {
813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
814: my $currentstring = '';
815: if ($target eq 'web') {
816: $currentstring .= $token->[4];
817: } elsif ($target eq 'tex') {
818: my $pre;
819: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
820: if ($align eq 'center') {
821: $pre='\begin{center}';
822: } elsif ($align eq 'left') {
823: $pre='\rlap{';
824: } elsif ($align eq 'right') {
825: $pre=' \hfill \llap{';
826: }
827: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
828: if (not defined $TeXsize) {$TeXsize="large";}
829: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
830: }
831: return $currentstring;
832: }
833:
834: sub end_h5 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = '';
837: if ($target eq 'web') {
838: $currentstring .= $token->[2];
839: } elsif ($target eq 'tex') {
840: my $post='\vskip 0 mm ';
841: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
842: if ($align eq 'center') {
843: $post='\end{center}';
844: } elsif ($align eq 'left') {
845: $post='} \hfill'.'\vskip 0 mm ';
846: } elsif ($align eq 'right') {
847: $post='}'.'\vskip 0 mm ';
848: }
849: $currentstring .= '}}'.$post;
850: }
851: return $currentstring;
852: }
853:
854: #-- <h6> tag
855: sub start_h6 {
856: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
857: my $currentstring = '';
858: if ($target eq 'web') {
859: $currentstring .= $token->[4];
860: } elsif ($target eq 'tex') {
861: my $pre;
862: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
863: if ($align eq 'center') {
864: $pre='\begin{center}';
865: } elsif ($align eq 'left') {
866: $pre='\rlap{';
867: } elsif ($align eq 'right') {
868: $pre=' \hfill \llap{';
869: }
870: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
871: if (not defined $TeXsize) {$TeXsize="large";}
872: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
873: }
874: return $currentstring;
875: }
876:
877: sub end_h6 {
878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
879: my $currentstring = '';
880: if ($target eq 'web') {
881: $currentstring .= $token->[2];
882: } elsif ($target eq 'tex') {
883: my $post='\vskip 0 mm ';
884: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
885: if ($align eq 'center') {
886: $post='\end{center}';
887: } elsif ($align eq 'left') {
888: $post='} \hfill'.'\vskip 0 mm ';
889: } elsif ($align eq 'right') {
890: $post='}'.'\vskip 0 mm ';
891: }
892: $currentstring .= '}}'.$post;
893: }
894: return $currentstring;
895: }
896:
897: #--- <cite> tag (end tag required)
898: sub start_cite {
899: my ($target,$token) = @_;
900: my $currentstring = '';
901: if ($target eq 'web') {
902: $currentstring .= $token->[4];
903: } elsif ($target eq 'tex') {
904: $currentstring .= '\textit{';
905: }
906: return $currentstring;
907: }
908:
909: sub end_cite {
910: my ($target,$token) = @_;
911: my $currentstring = '';
912: if ($target eq 'web') {
913: $currentstring .= $token->[2];
914: } elsif ($target eq 'tex') {
915: $currentstring .= '}';
916: }
917: return $currentstring;
918: }
919:
920: #-- <i> tag (end tag required)
921: sub start_i {
922: my ($target,$token) = @_;
923: my $currentstring = '';
924: if ($target eq 'web') {
925: $currentstring .= $token->[4];
926: } elsif ($target eq 'tex') {
927: $currentstring .= '\textit{';
928: }
929: return $currentstring;
930: }
931:
932: sub end_i {
933: my ($target,$token) = @_;
934: my $currentstring = '';
935: if ($target eq 'web') {
936: $currentstring .= $token->[2];
937: } elsif ($target eq 'tex') {
938: $currentstring .= '}';
939: }
940: return $currentstring;
941: }
942:
943: #-- <address> tag (end tag required)
944: sub start_address {
945: my ($target,$token) = @_;
946: my $currentstring = '';
947: if ($target eq 'web') {
948: $currentstring .= $token->[4];
949: } elsif ($target eq 'tex') {
950: $currentstring .= '\textit{';
951: }
952: return $currentstring;
953: }
954:
955: sub end_address {
956: my ($target,$token) = @_;
957: my $currentstring = '';
958: if ($target eq 'web') {
959: $currentstring .= $token->[2];
960: } elsif ($target eq 'tex') {
961: $currentstring .= '}';
962: }
963: return $currentstring;
964: }
965:
966: #-- <dfn> tag (end tag required)
967: sub start_dfn {
968: my ($target,$token) = @_;
969: my $currentstring = '';
970: if ($target eq 'web') {
971: $currentstring .= $token->[4];
972: } elsif ($target eq 'tex') {
973: $currentstring .= '\textit{';
974: }
975: return $currentstring;
976: }
977:
978: sub end_dfn {
979: my ($target,$token) = @_;
980: my $currentstring = '';
981: if ($target eq 'web') {
982: $currentstring .= $token->[2];
983: } elsif ($target eq 'tex') {
984: $currentstring .= '}';
985: }
986: return $currentstring;
987: }
988:
989: #-- <tt> tag (end tag required)
990: sub start_tt {
991: my ($target,$token) = @_;
992: my $currentstring = '';
993: if ($target eq 'web') {
994: $currentstring .= $token->[4];
995: } elsif ($target eq 'tex') {
996: $currentstring .= '\texttt{';
997: }
998: return $currentstring;
999: }
1000:
1001: sub end_tt {
1002: my ($target,$token) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web') {
1005: $currentstring .= $token->[2];
1006: } elsif ($target eq 'tex') {
1007: $currentstring .= '}';
1008: }
1009: return $currentstring;
1010: }
1011:
1012: #-- <kbd> tag (end tag required)
1013: sub start_kbd {
1014: my ($target,$token) = @_;
1015: my $currentstring = '';
1016: if ($target eq 'web') {
1017: $currentstring .= $token->[4];
1018: } elsif ($target eq 'tex') {
1019: $currentstring .= '\texttt{';
1020: }
1021: return $currentstring;
1022: }
1023:
1024: sub end_kbd {
1025: my ($target,$token) = @_;
1026: my $currentstring = '';
1027: if ($target eq 'web') {
1028: $currentstring .= $token->[2];
1029: } elsif ($target eq 'tex') {
1030: $currentstring .= '}';
1031: }
1032: return $currentstring;
1033: }
1034:
1035: #-- <code> tag (end tag required)
1036: sub start_code {
1037: my ($target,$token) = @_;
1038: my $currentstring = '';
1039: if ($target eq 'web') {
1040: $currentstring .= $token->[4];
1041: } elsif ($target eq 'tex') {
1042: $currentstring .= '\texttt{';
1043: }
1044: return $currentstring;
1045: }
1046:
1047: sub end_code {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web') {
1051: $currentstring .= $token->[2];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '}';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: #-- <em> tag (end tag required)
1059: sub start_em {
1060: my ($target,$token) = @_;
1061: my $currentstring = '';
1062: if ($target eq 'web') {
1063: $currentstring .= $token->[4];
1064: } elsif ($target eq 'tex') {
1065: $currentstring .= '\emph{';
1066: }
1067: return $currentstring;
1068: }
1069:
1070: sub end_em {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web') {
1074: $currentstring .= $token->[2];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '}';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: #-- <q> tag (end tag required)
1082: sub start_q {
1083: my ($target,$token) = @_;
1084: my $currentstring = '';
1085: if ($target eq 'web') {
1086: $currentstring .= $token->[4];
1087: } elsif ($target eq 'tex') {
1088: $currentstring .= '\emph{';
1089: }
1090: return $currentstring;
1091: }
1092:
1093: sub end_q {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web') {
1097: $currentstring .= $token->[2];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '}';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: #-- <p> tag (end tag optional)
1105: #optional attribute - align="center|left|right"
1106: sub start_p {
1107: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web') {
1110: $currentstring .= $token->[4];
1111: } elsif ($target eq 'tex') {
1112: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1113: if ($align eq 'center') {
1114: $currentstring='\begin{center}\par';
1115: } elsif ($align eq 'right') {
1116: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1117: } elsif ($align eq 'left') {
1118: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1119: } else {
1120: $currentstring='\par ';
1121: }
1122: my $signal=1;#<p> does not work inside <b>...</b>
1123: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1124: if (!$signal) {$currentstring = '';}
1125: }
1126: }
1127: return $currentstring;
1128: }
1129:
1130: sub end_p {
1131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web') {
1134: $currentstring .= $token->[2];
1135: } elsif ($target eq 'tex') {
1136: if ($$tagstack[-1] eq 'p') {
1137: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1138: if ($align eq 'center') {
1139: $currentstring .= '\end{center}';
1140: } elsif ($align eq 'right') {
1141: $currentstring .= '}}';
1142: } elsif ($align eq 'left') {
1143: $currentstring .= '}\hfill}';
1144: }
1145: }
1146: }
1147: return $currentstring;
1148: }
1149:
1150: #-- <br> tag (end tag forbidden)
1151: sub start_br {
1152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1153: my $currentstring = '';
1154: if ($target eq 'web') {
1155: $currentstring .= $token->[4];
1156: } elsif ($target eq 'tex') {
1157: if (($$tagstack[-2] eq 'b') || ($$tagstack[-2] eq 'strong') ||
1158: ($$tagstack[-2] eq 'ol') || ($$tagstack[-2] eq 'ul')) {
1159: $currentstring .= ' \vskip 0 mm ';
1160: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1161: $currentstring .= '\strut \\\\ \strut ';
1162: }
1163: }
1164: return $currentstring;
1165: }
1166:
1167: sub end_br {
1168: my ($target,$token) = @_;
1169: my $currentstring = '';
1170: if ($target eq 'web') {
1171: $currentstring .= $token->[2];
1172: }
1173: return $currentstring;
1174: }
1175:
1176: #-- <big> tag (end tag required)
1177: sub start_big {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web') {
1181: $currentstring .= $token->[4];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '{\large ';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: sub end_big {
1189: my ($target,$token) = @_;
1190: my $currentstring = '';
1191: if ($target eq 'web') {
1192: $currentstring .= $token->[2];
1193: } elsif ($target eq 'tex') {
1194: $currentstring .= '}';
1195: }
1196: return $currentstring;
1197: }
1198:
1199: #-- <small> tag (end tag required)
1200: sub start_small {
1201: my ($target,$token) = @_;
1202: my $currentstring = '';
1203: if ($target eq 'web') {
1204: $currentstring .= $token->[4];
1205: } elsif ($target eq 'tex') {
1206: $currentstring .= '{\footnotesize ';
1207: }
1208: return $currentstring;
1209: }
1210:
1211: sub end_small {
1212: my ($target,$token) = @_;
1213: my $currentstring = '';
1214: if ($target eq 'web') {
1215: $currentstring .= $token->[2];
1216: } elsif ($target eq 'tex') {
1217: $currentstring .= '}';
1218: }
1219: return $currentstring;
1220: }
1221:
1222: #-- <basefont> tag (end tag forbidden)
1223: sub start_basefont {
1224: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1225: my $currentstring = '';
1226: if ($target eq 'web') {
1227: $currentstring = $token->[4];
1228: } elsif ($target eq 'tex') {
1229: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1230: if (defined $basesize) {
1231: $currentstring = '{\\'.$basesize.' ';
1232: }
1233: }
1234: return $currentstring;
1235: }
1236:
1237: sub end_basefont {
1238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1239: my $currentstring = '';
1240: if ($target eq 'web') {
1241: $currentstring = $token->[4];
1242: } elsif ($target eq 'tex') {
1243: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1244: if (defined $basesize) {
1245: $currentstring = '}';
1246: }
1247: }
1248: return $currentstring;
1249: }
1250:
1251: #-- <font> tag (end tag required)
1252: sub start_font {
1253: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1254: my $currentstring = '';
1255: if ($target eq 'web') {
1256: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1257: if ($face!~/symbol/i) {
1258: if (($ENV{'browser.fontenhance'} eq 'on') ||
1259: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1260: }
1261: $currentstring = $token->[4];
1262: } elsif ($target eq 'tex') {
1263: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1264: if (defined $fontsize) {
1265: $currentstring = '{\\'.$fontsize.' ';
1266: }
1267: }
1268: return $currentstring;
1269: }
1270:
1271: sub end_font {
1272: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1273: my $currentstring = '';
1274: if ($target eq 'web') {
1275: $currentstring = $token->[2];
1276: } elsif ($target eq 'tex') {
1277: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1278: if (defined $fontsize) {
1279: $currentstring = '}';
1280: }
1281: }
1282: return $currentstring;
1283: }
1284:
1285: #-- <strike> tag (end tag required)
1286: sub start_strike {
1287: my ($target,$token) = @_;
1288: my $currentstring = '';
1289: if ($target eq 'web') {
1290: $currentstring .= $token->[4];
1291: } elsif ($target eq 'tex') {
1292: &Apache::lonxml::startredirection();
1293: }
1294: return $currentstring;
1295: }
1296:
1297: sub end_strike {
1298: my ($target,$token) = @_;
1299: my $currentstring = '';
1300: if ($target eq 'web') {
1301: $currentstring .= $token->[2];
1302: } elsif ($target eq 'tex') {
1303: $currentstring=&Apache::lonxml::endredirection();
1304: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1305: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1306: $currentstring=~s/(\S)\s*$/$1\}/;
1307: }
1308: return $currentstring;
1309: }
1310:
1311: #-- <s> tag (end tag required)
1312: sub start_s {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web') {
1316: $currentstring .= $token->[4];
1317: } elsif ($target eq 'tex') {
1318: &Apache::lonxml::startredirection();
1319: }
1320: return $currentstring;
1321: }
1322:
1323: sub end_s {
1324: my ($target,$token) = @_;
1325: my $currentstring = '';
1326: if ($target eq 'web') {
1327: $currentstring .= $token->[2];
1328: } elsif ($target eq 'tex') {
1329: $currentstring=&Apache::lonxml::endredirection();
1330: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1331: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1332: $currentstring=~s/(\S)\s*$/$1\}/;
1333: }
1334: return $currentstring;
1335: }
1336:
1337: #-- <sub> tag (end tag required)
1338: sub start_sub {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web') {
1342: $currentstring .= $token->[4];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= '\ensuremath{_{';
1345: }
1346: return $currentstring;
1347: }
1348:
1349: sub end_sub {
1350: my ($target,$token) = @_;
1351: my $currentstring = '';
1352: if ($target eq 'web') {
1353: $currentstring .= $token->[2];
1354: } elsif ($target eq 'tex') {
1355: $currentstring .= '}}';
1356: }
1357: return $currentstring;
1358: }
1359:
1360: #-- <sup> tag (end tag required)
1361: sub start_sup {
1362: my ($target,$token) = @_;
1363: my $currentstring = '';
1364: if ($target eq 'web') {
1365: $currentstring .= $token->[4];
1366: } elsif ($target eq 'tex') {
1367: $currentstring .= '\ensuremath{^{';
1368: }
1369: return $currentstring;
1370: }
1371:
1372: sub end_sup {
1373: my ($target,$token) = @_;
1374: my $currentstring = '';
1375: if ($target eq 'web') {
1376: $currentstring .= $token->[2];
1377: } elsif ($target eq 'tex') {
1378: $currentstring .= '}}';
1379: }
1380: return $currentstring;
1381: }
1382:
1383: #-- <hr> tag (end tag forbidden)
1384: sub start_hr {
1385: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1386: my $currentstring = '';
1387: if ($target eq 'web') {
1388: $currentstring .= $token->[4];
1389: } elsif ($target eq 'tex') {
1390: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1391: if (defined $LaTeXwidth) {
1392: if ($LaTeXwidth=~/^%/) {
1393: substr($LaTeXwidth,0,1)='';
1394: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1395: }
1396: } else {
1397: $LaTeXwidth ='0.9\textwidth';
1398: }
1399: my ($pre,$post);
1400: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1401: if (($align eq 'center') || (not defined $align)) {
1402: $pre=''; $post='';
1403: } elsif ($align eq 'left') {
1404: $pre='\rlap{'; $post='} \hfill';
1405: } elsif ($align eq 'right') {
1406: $pre=' \hfill \llap{'; $post='}';
1407: }
1408: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1409: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1410: }
1411: return $currentstring;
1412: }
1413:
1414: sub end_hr {
1415: my ($target,$token) = @_;
1416: my $currentstring = '';
1417: if ($target eq 'web') {
1418: $currentstring .= $token->[2];
1419: }
1420: return $currentstring;
1421: }
1422:
1423: #-- <div> tag (end tag required)
1424: sub start_div {
1425: my ($target,$token) = @_;
1426: my $currentstring = '';
1427: if ($target eq 'web') {
1428: $currentstring .= $token->[4];
1429: }
1430: return $currentstring;
1431: }
1432:
1433: sub end_div {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web') {
1437: $currentstring .= $token->[2];
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <a> tag (end tag required)
1443: sub start_a {
1444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1445: my $currentstring = '';
1446: if ($target eq 'web') {
1447: $currentstring .= $token->[4];
1448: } elsif ($target eq 'tex') {
1449: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1450: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1451: if ($a=~/\S/) {
1452: $a=~s/([^\\])%/$1\\\%/g;
1453: $currentstring .= '\ref{URI: '.$a.'}';
1454: } elsif ($b=~/\S/) {
1455: $currentstring .= '\ref{Anchor: '.$b.'}';
1456: } else {
1457: $currentstring.='';
1458: }
1459: }
1460: return $currentstring;
1461: }
1462:
1463: sub end_a {
1464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1465: my $currentstring = '';
1466: if ($target eq 'web') {
1467: $currentstring .= $token->[2];
1468: }
1469: return $currentstring;
1470: }
1471:
1472: #-- <li> tag (end tag optional)
1473: sub start_li {
1474: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1475: my $currentstring = '';
1476: if ($target eq 'web') {
1477: $currentstring = $token->[4];
1478: } elsif ($target eq 'tex') {
1479: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1480: if ($type=~/circle/) {
1481: $currentstring .= ' \item[o] ';
1482: } elsif ($type=~/square/) {
1483: $currentstring .= ' \item[$\Box$] ';
1484: } elsif ($type ne '') {
1485: $currentstring .= ' \item['.$type.'] ';
1486: } else {
1487: $currentstring .= ' \item ';
1488: }
1489: }
1490: return $currentstring;
1491: }
1492:
1493: sub end_li {
1494: my ($target,$token) = @_;
1495: my $currentstring = '';
1496: if ($target eq 'web') {
1497: $currentstring = $token->[2];
1498: }
1499: return $currentstring;
1500: }
1501:
1502: #-- <u> tag (end tag required)
1503: sub start_u {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web') {
1507: $currentstring .= $token->[4];
1508: } elsif ($target eq 'tex') {
1509: &Apache::lonxml::startredirection();
1510: }
1511: return $currentstring;
1512: }
1513:
1514: sub end_u {
1515: my ($target,$token) = @_;
1516: my $currentstring = '';
1517: if ($target eq 'web') {
1518: $currentstring .= $token->[2];
1519: } elsif ($target eq 'tex') {
1520: $currentstring=&Apache::lonxml::endredirection();
1521: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1522: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1523: $currentstring=~s/(\S)\s*$/$1\}/;
1524: }
1525: return $currentstring;
1526: }
1527:
1528: #-- <ul> tag (end tag required)
1529: sub start_ul {
1530: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1531: my $currentstring = '';
1532: if ($target eq 'web') {
1533: $currentstring = $token->[4];
1534: } elsif ($target eq 'tex') {
1535: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1536: if ($TeXtype eq 'disc') {
1537: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1538: '\renewcommand{\labelitemii}{$\bullet$}'.
1539: '\renewcommand{\labelitemiii}{$\bullet$}'.
1540: '\renewcommand{\labelitemiv}{$\bullet$}';
1541: } elsif ($TeXtype eq 'circle') {
1542: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1543: '\renewcommand{\labelitemii}{$\circ$}'.
1544: '\renewcommand{\labelitemiii}{$\circ$}'.
1545: '\renewcommand{\labelitemiv}{$\circ$}';
1546: } elsif ($TeXtype eq 'square') {
1547: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1548: '\renewcommand{\labelitemii}{$\diamond$}'.
1549: '\renewcommand{\labelitemiii}{$\diamond$}'.
1550: '\renewcommand{\labelitemiv}{$\diamond$}';
1551: }
1552: $currentstring .= '\strut \begin{itemize}';
1553: }
1554: return $currentstring;
1555: }
1556:
1557: sub end_ul {
1558: my ($target,$token) = @_;
1559: my $currentstring = '';
1560: if ($target eq 'web') {
1561: $currentstring = $token->[2];
1562: } elsif ($target eq 'tex') {
1563: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1564: '\renewcommand{\labelitemii}{$\bullet$}'.
1565: '\renewcommand{\labelitemiii}{$\bullet$}'.
1566: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1567: }
1568: return $currentstring;
1569: }
1570:
1571: #-- <menu> tag (end tag required)
1572: sub start_menu {
1573: my ($target,$token) = @_;
1574: my $currentstring = '';
1575: if ($target eq 'web') {
1576: $currentstring = $token->[4];
1577: } elsif ($target eq 'tex') {
1578: $currentstring = " \\begin{itemize} ";
1579: }
1580: return $currentstring;
1581: }
1582:
1583: sub end_menu {
1584: my ($target,$token) = @_;
1585: my $currentstring = '';
1586: if ($target eq 'web') {
1587: $currentstring = $token->[2];
1588: } elsif ($target eq 'tex') {
1589: $currentstring = " \\end{itemize}";
1590: }
1591: return $currentstring;
1592: }
1593:
1594: #-- <dir> tag (end tag required)
1595: sub start_dir {
1596: my ($target,$token) = @_;
1597: my $currentstring = '';
1598: if ($target eq 'web') {
1599: $currentstring = $token->[4];
1600: } elsif ($target eq 'tex') {
1601: $currentstring = " \\begin{itemize} ";
1602: }
1603: return $currentstring;
1604: }
1605:
1606: sub end_dir {
1607: my ($target,$token) = @_;
1608: my $currentstring = '';
1609: if ($target eq 'web') {
1610: $currentstring = $token->[2];
1611: } elsif ($target eq 'tex') {
1612: $currentstring = " \\end{itemize}";
1613: }
1614: return $currentstring;
1615: }
1616:
1617: #-- <ol> tag (end tag required)
1618: sub start_ol {
1619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1620: my $currentstring = '';
1621: if ($target eq 'web') {
1622: $currentstring = $token->[4];
1623: } elsif ($target eq 'tex') {
1624: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1625: if ($type eq '1') {
1626: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1627: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1628: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1629: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1630: } elsif ($type eq 'A') {
1631: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1632: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1633: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1634: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1635: } elsif ($type eq 'a') {
1636: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1637: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1638: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1639: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1640: } elsif ($type eq 'i') {
1641: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1642: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1643: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1644: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1645: } elsif ($type eq 'I') {
1646: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1647: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1648: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1649: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1650: }
1651: $currentstring .= '\strut \begin{enumerate}';
1652: }
1653: return $currentstring;
1654: }
1655:
1656: sub end_ol {
1657: my ($target,$token) = @_;
1658: my $currentstring = '';
1659: if ($target eq 'web') {
1660: $currentstring = $token->[2];
1661: } elsif ($target eq 'tex') {
1662: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1663: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1664: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1665: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1666: }
1667: return $currentstring;
1668: }
1669:
1670: #-- <dl> tag (end tag required)
1671: sub start_dl {
1672: my ($target,$token) = @_;
1673: my $currentstring = '';
1674: if ($target eq 'web') {
1675: $currentstring = $token->[4];
1676: } elsif ($target eq 'tex') {
1677: $currentstring = '\begin{description}';
1678: @Apache::londefdef::description=();
1679: $Apache::londefdef::DD_redirection=0;
1680: $Apache::londefdef::DT_redirection=0;
1681: }
1682: return $currentstring;
1683: }
1684:
1685: sub end_dl {
1686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1687: my $currentstring = '';
1688: if ($target eq 'web') {
1689: $currentstring = $token->[2];
1690: } elsif ($target eq 'tex') {
1691: if ($Apache::londefdef::DT_redirection) {
1692: my $data=&item_cleanup;
1693: push @Apache::londefdef::description,'\item['.$data.']';
1694: $Apache::londefdef::DT_redirection=0;
1695: } elsif ($Apache::londefdef::DD_redirection) {
1696: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1697: }
1698: foreach my $element (@Apache::londefdef::description) {
1699: $currentstring.=' '.$element.' ';
1700: }
1701: @Apache::londefdef::description=();
1702: $currentstring.='\end{description}';
1703: }
1704: return $currentstring;
1705: }
1706:
1707: #-- <dt> tag (end tag optional)
1708: sub start_dt {
1709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1710: my $currentstring='';
1711: if ($target eq 'web') {
1712: $currentstring = $token->[4];
1713: } elsif ($target eq 'tex') {
1714: if ($Apache::londefdef::DT_redirection) {
1715: my $data=&item_cleanup;
1716: push @Apache::londefdef::description,'\item['.$data.']';
1717: $Apache::londefdef::DT_redirection=0;
1718: } elsif ($Apache::londefdef::DD_redirection) {
1719: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1720: $Apache::londefdef::DD_redirection=0;
1721: }
1722: &Apache::lonxml::startredirection();
1723: $Apache::londefdef::DT_redirection=1;
1724: }
1725: return $currentstring;
1726: }
1727:
1728: sub end_dt {
1729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1730: my $currentstring = '';
1731: if ($target eq 'web') {
1732: $currentstring = $token->[2];
1733: } elsif ($target eq 'tex') {
1734: my $data=&item_cleanup;
1735: push @Apache::londefdef::description,'\item['.$data.']';
1736: $Apache::londefdef::DT_redirection=0;
1737: }
1738: return $currentstring;
1739: }
1740:
1741: sub item_cleanup {
1742: my $item=&Apache::lonxml::endredirection();
1743: $item=~s/\\begin{center}//g;
1744: $item=~s/\\end{center}//g;
1745: return $item;
1746: }
1747:
1748: #-- <dd> tag (end tag optional)
1749: sub start_dd {
1750: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1751: my $currentstring = '';
1752: if ($target eq 'web') {
1753: $currentstring = $token->[4];
1754: } elsif ($target eq 'tex') {
1755: if ($Apache::londefdef::DT_redirection) {
1756: my $data=&item_cleanup;
1757: push @Apache::londefdef::description,'\item['.$data.']';
1758: $Apache::londefdef::DT_redirection=0;
1759: }
1760: $Apache::londefdef::DD_redirection=1;
1761: &Apache::lonxml::startredirection();
1762: }
1763: return $currentstring;
1764: }
1765:
1766: sub end_dd {
1767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1768: my $currentstring = '';
1769: if ($target eq 'web') {
1770: $currentstring = $token->[2];
1771: } elsif ($target eq 'tex') {
1772: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1773: $Apache::londefdef::DD_redirection=0;
1774: }
1775: return $currentstring;
1776: }
1777:
1778: #-- <table> tag (end tag required)
1779: #list of supported attributes: border,width,TeXwidth
1780: sub start_table {
1781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1782: my ($textwidth,$currentstring)=('','');
1783: if ($target eq 'web') {
1784: $currentstring = $token->[4];
1785: } elsif ($target eq 'tex') {
1786: my $aa = {};
1787: push @Apache::londefdef::table, $aa;
1788: $Apache::londefdef::table[-1]{'row_number'} = -1;
1789: #maximum table's width (default coincides with text line length)
1790: if ($#Apache::londefdef::table==0) {
1791: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1792: $textwidth=~/(\d+\.?\d*)/;
1793: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1794: } else {
1795: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1796: #the maximum width of nested table is determined by LATeX width of parent cell
1797: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1798: } else {
1799: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1800: my $textwidth=$Apache::londefdef::table[-2]{'width'};
1801: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1802: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1803: }
1804: }
1805: }
1806: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1807: if (not defined $TeXwidth) {
1808: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1809: if ($htmlwidth=~/%/) {
1810: $Apache::londefdef::table[-1]{'percent'}=1;
1811: $htmlwidth=~/(\d+)/;
1812: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1813: } else {
1814: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1815: }
1816: } elsif ($TeXwidth=~/%/) {
1817: $Apache::londefdef::table[-1]{'percent'}=1;
1818: $TeXwidth=~/(\d+)/;
1819: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1820: } else {
1821: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1822: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1823: }
1824: #table's border
1825: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1826: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1827: unless (defined $border) { $border = 0; }
1828: if ($border) {
1829: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1830: $Apache::londefdef::table[-1]{'vinc'} = '&';
1831: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1832: } else {
1833: $Apache::londefdef::table[-1]{'hinc'} = '';
1834: $Apache::londefdef::table[-1]{'vinc'} = '&';
1835: $Apache::londefdef::table[-1]{'vvinc'} = '';
1836: }
1837: if ($#Apache::londefdef::table==0) {
1838: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1839: }
1840: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1841: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1842: $Apache::londefdef::table[-1]{'objectlen'}=[];
1843: $Apache::londefdef::table[-1]{'maxlen'}=[];
1844: $Apache::londefdef::table[-1]{'minlen'}=[];
1845: $Apache::londefdef::table[-1]{'content'}=[];
1846: $Apache::londefdef::table[-1]{'align'}=[];
1847: $currentstring='\keephidden{NEW TABLE ENTRY}';
1848: }
1849: return $currentstring;
1850: }
1851:
1852: sub end_table {
1853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1854: my $currentstring = '';
1855: if ($target eq 'web') {
1856: $currentstring = $token->[2];
1857: } elsif ($target eq 'tex') {
1858: my $inmemory = '';
1859: my $output = '';
1860: my $WARNING='';
1861: #width of columns from TeXwidth attributes
1862: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1863: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1864: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1865: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1866: }
1867: }
1868: }
1869: #free space and number of empty columns
1870: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1871: ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
1872: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1873: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1874: $empty_columns++;
1875: } else {
1876: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1877: }
1878: }
1879: #boundaries for contents columns
1880: my @min_len=();#columns can not be narrower
1881: my @max_len=();#maximum length of column
1882: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1883: my ($localmin,$localmax)=(0,0);
1884: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1885: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1886: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1887: }
1888: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1889: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1890: }
1891: }
1892: push @min_len, $localmin;
1893: push @max_len, $localmax;
1894: }
1895: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1896: my $localmin=0,;
1897: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1898: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1899: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1900: }
1901: }
1902: if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
1903: if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
1904: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1905: $min_len[$jn]=0;
1906: $max_len[$jn]=0;
1907: }
1908: }
1909: #final adjustment of column width
1910: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1911: my @adjust=();
1912: #step 1. adjustment by maximum value
1913: my $space_neeeded=0;
1914: for (my $jn=0;$jn<=$#max_len;$jn++) {
1915: $space_neeeded=$space_neeeded+$max_len[$jn];
1916: }
1917: if ($space_neeeded<=$available_space) {
1918: for (my $jn=0;$jn<=$#max_len;$jn++) {
1919: if ($fwidth[$jn]==0) {
1920: $fwidth[$jn]=$max_len[$jn];
1921: }
1922: }
1923: } else {
1924: #step 2. adjustment by minimum value (estimation)
1925: $space_neeeded=0;
1926: for (my $jn=0;$jn<=$#min_len;$jn++) {
1927: $space_neeeded+=$min_len[$jn];
1928: }
1929: if ($space_neeeded>$available_space) {
1930: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1931: for (my $jn=0;$jn<=$#max_len;$jn++) {
1932: if ($fwidth[$jn]==0) {
1933: $fwidth[$jn]=$min_len[$jn];
1934: }
1935: }
1936: } else {
1937: #step 3. adjustment over minimal + corrections
1938: my $enlarge_coef=$available_space/$space_neeeded;
1939: my $acsessive=0;
1940: for (my $jn=0;$jn<=$#min_len;$jn++) {
1941: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1942: if ($adjust[$jn]>$max_len[$jn]) {
1943: $fwidth[$jn]=$max_len[$jn];
1944: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1945: $adjust[$jn]=0;
1946: }
1947: }
1948: if ($acsessive>0) {
1949: #we have an excess of space and can redistribute it
1950: my $notempty_columns=0;
1951: for (my $jn=0;$jn<=$#min_len;$jn++) {
1952: if ($adjust[$jn]!=0) {
1953: $notempty_columns++;
1954: }
1955: }
1956: my $per_column=$acsessive/$notempty_columns;
1957: for (my $jn=0;$jn<=$#min_len;$jn++) {
1958: if ($adjust[$jn]!=0) {
1959: $adjust[$jn]+=$per_column;
1960: $fwidth[$jn]=$adjust[$jn];
1961: }
1962: }
1963: } else {
1964: for (my $jn=0;$jn<=$#min_len;$jn++) {
1965: $fwidth[$jn]=$adjust[$jn];
1966: }
1967: }
1968: }
1969: }
1970: #use all available width if it is defined in % or as TeXwidth
1971: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
1972: my $current=0;
1973: for (my $i=0;$i<=$#fwidth;$i++) {
1974: $current+=$fwidth[$i];
1975: }
1976: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1977: for (my $i=0;$i<=$#fwidth;$i++) {
1978: $fwidth[$i]*=$coef;
1979: }
1980: }
1981: #removing of empty columns if allowed
1982: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1983: if ($permission eq 'yes') {
1984: my @cleaned_table=();
1985: my @cleaned_header=();
1986: my $colind=0;
1987: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1988: if ($fwidth[$jn]!=0) {
1989: #we need to copy column
1990: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1991: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
1992: $cleaned_header[$colind]=$fwidth[$jn];
1993: }
1994: $colind++;
1995: }
1996: }
1997: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
1998: @fwidth=@cleaned_header;
1999: }
2000: #construct header of the table
2001: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2002: for (my $in=0;$in<=$#fwidth;$in++) {
2003: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2004: }
2005: $header_of_table .= '}';
2006: #fill the table
2007: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2008: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2009: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2010: $output.='\begin{center}';
2011: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2012: $output.=' \hfill \llap{'
2013: }
2014: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2015: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2016: $output.='\end{center}';
2017: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2018: $output.='} ';
2019: }
2020: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2021: }
2022: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2023: }
2024: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2025: if ($#Apache::londefdef::table > 0) {
2026: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2027: pop @Apache::londefdef::table;
2028: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2029: } else {
2030: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2031: pop @Apache::londefdef::table;
2032: undef @Apache::londefdef::table;
2033: }
2034: }
2035: return $currentstring;
2036: }
2037:
2038: #-- <tr> tag (end tag optional)
2039: sub start_tr {
2040: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2041: my $currentstring = '';
2042: if ($target eq 'web') {
2043: $currentstring = $token->[4];
2044: } elsif ($target eq 'tex') {
2045: $Apache::londefdef::table[-1]{'row_number'}++;
2046: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2047: if ($alignchar ne '') {
2048: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2049: } else {
2050: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2051: }
2052: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2053: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2054: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2055: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2056: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2057: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2058: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2059: }
2060: return $currentstring;
2061: }
2062:
2063: sub end_tr {
2064: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2065: my $currentstring = '';
2066: if ($target eq 'web') {
2067: $currentstring = $token->[2];
2068: } elsif ($target eq 'tex') {
2069: if ($Apache::londefdef::TD_redirection) {
2070: &end_td_tex($parstack,$parser,$safeeval);
2071: }
2072: }
2073: return $currentstring;
2074: }
2075:
2076: #-- <td> tag (end tag optional)
2077: sub start_td {
2078: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2079: my $currentstring = '';
2080: if ($target eq 'web') {
2081: $currentstring = $token->[4];
2082: } elsif ($target eq 'tex') {
2083: $Apache::londefdef::TD_redirection = 1;
2084: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2085: }
2086: return $currentstring;
2087: }
2088:
2089: sub tag_check {
2090: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2091: my @ar=@$parstack;
2092: for (my $i=$#ar-1;$i>=0;$i--) {
2093: if (lc($$tagstack[$i]) eq $good_tag) {
2094: &start_td_tex($parstack,$parser,$safeeval);
2095: last;
2096: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2097: splice @ar, $i+1;
2098: &end_td_tex(\@ar,$parser,$safeeval);
2099: &start_td_tex($parstack,$parser,$safeeval);
2100: last;
2101: }
2102: }
2103: return '';
2104: }
2105:
2106: sub start_td_tex {
2107: my ($parstack,$parser,$safeeval) = @_;
2108: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2109: if ($alignchar eq '') {
2110: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2111: }
2112: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2113: $Apache::londefdef::table[-1]{'counter_columns'}++;
2114: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2115: if (defined $TeXwidth) {
2116: my $current_length=&recalc($TeXwidth);
2117: $current_length=~/(\d+\.?\d*)/;
2118: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2119: }
2120: &Apache::lonxml::startredirection();
2121: return '';
2122: }
2123:
2124: sub end_td_tex {
2125: my ($parstack,$parser,$safeeval) = @_;
2126: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2127: my $data=&Apache::lonxml::endredirection();
2128: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2129: if (defined $TeXwidth) {
2130: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2131: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2132: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2133: } else {
2134: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2135: my $garbage_data=$data;
2136: my $fwidth=0;
2137: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2138: my $current_length=&recalc($1);
2139: $current_length=~/(\d+\.?\d*)/;
2140: if ($fwidth<$1) {$fwidth=$1;}
2141: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2142: }
2143: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2144: my $current_length=$1;
2145: if ($fwidth<$current_length) {$fwidth=$current_length;}
2146: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2147: }
2148: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2149: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2150: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2151: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2152: } else {
2153: $data=~s/^\s+(\S.*)/$1/;
2154: $data=~s/(.*\S)\s+$/$1/;
2155: $data=~s/(\s)+/$1/;
2156: my ($current_length,$min_length)=(0,0);
2157: if ($data=~/\\vskip/) {
2158: my $newdata=$data;
2159: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2160: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2161: foreach my $elementdata (@newdata) {
2162: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2163: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2164: my @words=split(/ /,$elementdata);
2165: foreach my $word (@words) {
2166: my $lengthword=2.5*&LATEX_length($word);
2167: if ($min_length<$lengthword) {$min_length=$lengthword;}
2168: }
2169: }
2170: } else {
2171: $current_length=2.5*&LATEX_length($data);
2172: my @words=split(/ /,$data);
2173: foreach my $word (@words) {
2174: my $lengthword=2.5*&LATEX_length($word);
2175: if ($min_length<$lengthword) {$min_length=$lengthword;}
2176: }
2177: }
2178: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2179: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2180: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2181: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2182: }
2183: }
2184: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2185: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2186: }
2187: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2188: return'';
2189: }
2190:
2191: sub end_td {
2192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2193: my $currentstring = '';
2194: if ($target eq 'web') {
2195: $currentstring = $token->[2];
2196: } elsif ($target eq 'tex') {
2197: $Apache::londefdef::TD_redirection =0;
2198: &end_td_tex($parstack,$parser,$safeeval);
2199: }
2200: return $currentstring;
2201: }
2202:
2203: #-- <th> tag (end tag optional)
2204: sub start_th {
2205: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2206: my $currentstring = '';
2207: if ($target eq 'web') {
2208: $currentstring = $token->[4];
2209: } elsif ($target eq 'tex') {
2210: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2211: if ($what_to_push eq '') {
2212: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2213: }
2214: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2215: $Apache::londefdef::table[-1]{'counter_columns'}++;
2216: &Apache::lonxml::startredirection();
2217: }
2218: return $currentstring;
2219: }
2220:
2221: sub end_th {
2222: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2223: my $currentstring = '';
2224: if ($target eq 'web') {
2225: $currentstring = $token->[2];
2226: } elsif ($target eq 'tex') {
2227: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2228: my $data=&Apache::lonxml::endredirection();
2229: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2230: if (defined $TeXwidth) {
2231: my $current_length=&recalc($TeXwidth);
2232: $current_length=~/(\d+)/;
2233: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2234: $Apache::londefdef::table[-1]{'length'} .= '0,';
2235: } else {
2236: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2237: my $current_length=&recalc($1);
2238: $current_length=~/(\d+)/;
2239: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2240: $Apache::londefdef::table[-1]{'length'} .= '0,';
2241: } else {
2242: $data=~/^\s*(\S.*)/;
2243: $data=$1;
2244: $data=~/(.*\S)\s*$/;
2245: $data=$1;
2246: my $current_length=2*length($data);
2247: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2248: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2249: }
2250: }
2251: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2252: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2253: }
2254: $data='\textbf{'.$data.'}';
2255: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2256: }
2257: return $currentstring;
2258: }
2259: #-- <img> tag (end tag forbidden)
2260: sub start_img {
2261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2262: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2263: undef,1);
2264: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2265: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2266: return '';
2267: }
2268: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2269: my $currentstring = '';
2270: my $scaling = .3;
2271: if ($target eq 'web') {
2272: if ($ENV{'browser.imagesuppress'} ne 'on') {
2273: $currentstring.= $token->[4];
2274: } else {
2275: my $alttag= &Apache::lonxml::get_param
2276: ('alt',$parstack,$safeeval,undef,1);
2277: unless ($alttag) {
2278: $alttag=&Apache::lonmeta::alttag
2279: ($Apache::lonxml::pwd[-1],$src);
2280: }
2281: $currentstring.='[IMAGE: '.$alttag.']';
2282: }
2283: } elsif ($target eq 'tex') {
2284: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2285: #if uploaded restore the path
2286: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2287: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2288: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2289: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2290: }
2291: #if original gif/jpg/png file exist do following:
2292: if (-e $src) {
2293: #what is the image size?
2294: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2295: my ($file,$path)=&file_path($src);
2296: my $newsrc = $src;
2297: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2298: $file=~s/\.(gif|jpg|png)$/.eps/i;
2299: #where can we find the picture?
2300: if (-e $newsrc) {
2301: #eps counterpart for image exist
2302: if ($path) {
2303: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2304: }
2305: } else {
2306: #there is no eps counterpart for image - check for ps one
2307: $newsrc =~ s/\.eps$/\.ps/;
2308: if (-e $newsrc) {
2309: #ps counterpart for image exist
2310: $file =~ s/\.eps$/\.ps/;
2311: if ($path) {
2312: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2313: }
2314: } else {
2315: #care about eps dynamical generation
2316: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2317: }
2318: }
2319: } else {
2320: #original image file doesn't exist so check the alt attribute
2321: my $alt =
2322: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2323: unless ($alt) {
2324: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2325: }
2326:
2327: if ($alt) {
2328: $currentstring .= ' '.$alt.' ';
2329: } else {
2330: #<allow> tag will care about replication
2331: }
2332: }
2333: } elsif ($target eq 'edit') {
2334: $currentstring .=&Apache::edit::tag_start($target,$token);
2335: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2336: &Apache::edit::browse('src',undef,'alt').' '.
2337: &Apache::edit::search('src',undef,'alt').'<br />';
2338: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2339: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2340: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2341: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2342: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2343: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2344: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2345: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2346: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2347: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2348: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2349: if ($width) { $currentstring.=' width="'.$width.'" '; }
2350: if ($height) { $currentstring.=' height="'.$height.'" '; }
2351: $currentstring .= ' />';
2352: } elsif ($target eq 'modified') {
2353: my ($osrc,$owidth,$oheight)=
2354: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2355: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2356: $safeeval,'src','alt',
2357: 'TeXwidth','TeXheight',
2358: 'width','height');
2359: my ($nsrc,$nwidth,$nheight)=
2360: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2361: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2362: &image_replication($loc);
2363: my ($iwidth,$iheight);
2364: if (-e $loc) {
2365: my $image = Image::Magick->new;
2366: $image->Read($loc);
2367: ($iwidth, $iheight) = ($image->Get('width'),
2368: $image->Get('height'));
2369: }
2370: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2371: # changed image or no size specified,
2372: # if they didn't explicitly change the
2373: # width or height use the ones from the image
2374: if ($iwidth && $iheight) {
2375: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2376: $token->[2]{'width'} = $iwidth;$ctag=1;
2377: }
2378: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2379: $token->[2]{'height'}=$iheight;$ctag=1;
2380: }
2381: }
2382: }
2383: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2384: # if we don't have a width or height
2385: if ($iwidth && $cwidth && !$cheight) {
2386: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2387: }
2388: if ($iheight && $cheight && !$cwidth) {
2389: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2390: }
2391: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2392: }
2393: return $currentstring;
2394: }
2395:
2396: sub end_img {
2397: my ($target,$token) = @_;
2398: my $currentstring = '';
2399: if ($target eq 'web') {
2400: $currentstring = $token->[2];
2401: } elsif ($target eq 'tex') {
2402: $currentstring = '';
2403: }
2404: return $currentstring;
2405: }
2406:
2407: #-- <applet> tag (end tag required)
2408: sub start_applet {
2409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2410:
2411: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2412: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2413:
2414: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2415: undef,1);
2416: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2417:
2418: my $currentstring = '';
2419: if ($target eq 'web') {
2420: if ($ENV{'browser.appletsuppress'} ne 'on') {
2421: $currentstring = $token->[4];
2422: } else {
2423: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2424: $safeeval,undef,1);
2425: unless ($alttag) {
2426: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2427: $code);
2428: }
2429: $currentstring='[APPLET: '.$alttag.']';
2430: }
2431: } elsif ($target eq 'tex') {
2432: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2433: $safeeval,undef,1);
2434: unless ($alttag) {
2435: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2436: undef,1);
2437: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2438: $code);
2439: }
2440: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2441: '.}\end{center}';
2442: }
2443: return $currentstring;
2444: }
2445:
2446: sub end_applet {
2447: my ($target,$token) = @_;
2448: my $currentstring = '';
2449: if ($target eq 'web') {
2450: $currentstring = $token->[2];
2451: } elsif ($target eq 'tex') {
2452: }
2453: return $currentstring;
2454: }
2455:
2456: #-- <embed> tag (end tag optional/required)
2457: sub start_embed {
2458: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2459: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2460: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2461: my $currentstring = '';
2462: if ($target eq 'web') {
2463: if ($ENV{'browser.embedsuppress'} ne 'on') {
2464: $currentstring = $token->[4];
2465: } else {
2466: my $alttag=&Apache::lonxml::get_param
2467: ('alt',$parstack,$safeeval,undef,1);
2468: unless ($alttag) {
2469: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2470: }
2471: $currentstring='[EMBED: '.$alttag.']';
2472: }
2473: } elsif ($target eq 'tex') {
2474: }
2475: return $currentstring;
2476: }
2477:
2478: sub end_embed {
2479: my ($target,$token) = @_;
2480: my $currentstring = '';
2481: if ($target eq 'web') {
2482: $currentstring = $token->[2];
2483: } elsif ($target eq 'tex') {
2484: }
2485: return $currentstring;
2486: }
2487:
2488: #-- <param> tag (end tag forbidden)
2489: sub start_param {
2490: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2491: if (&Apache::lonxml::get_param
2492: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2493: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2494: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2495: }
2496: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2497: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2498: my $currentstring = '';
2499: if ($target eq 'web') {
2500: $currentstring = $token->[4];
2501: } elsif ($target eq 'tex') {
2502: }
2503: return $currentstring;
2504: }
2505:
2506: sub end_param {
2507: my ($target,$token) = @_;
2508: my $currentstring = '';
2509: if ($target eq 'web') {
2510: $currentstring = $token->[2];
2511: } elsif ($target eq 'tex') {
2512: }
2513: return $currentstring;
2514: }
2515:
2516: #-- <allow> tag
2517: sub start_allow {
2518: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2519: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2520: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2521: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2522: &Apache::lonnet::clutter($src);
2523: &image_replication($src);
2524: my $result;
2525: if ($target eq 'edit') {
2526: $result .=&Apache::edit::tag_start($target,$token);
2527: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2528: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2529: } elsif ($target eq 'modified') {
2530: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2531: $safeeval,'src');
2532: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2533: }
2534: return $result;
2535: }
2536:
2537: sub end_allow {
2538: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2539: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2540: return '';
2541: }
2542:
2543: #-- Frames (end tag required)
2544: #-- <frameset>
2545: sub start_frameset {
2546: my ($target,$token) = @_;
2547: my $currentstring = '';
2548: if ($target eq 'web') {
2549: if (!$Apache::lonxml::registered &&
2550: $ENV{'request.state'} eq 'published') {
2551: $currentstring.='<head>'.
2552: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2553: }
2554: my $onLoad='';
2555: foreach my $key (keys(%{$token->[2]})) {
2556: if ($key =~ /^onload$/i) {
2557: $onLoad.=$token->[2]->{$key}.';';
2558: delete($token->[2]->{$key});
2559: }
2560: }
2561: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2562: my $onUnload='';
2563: foreach my $key (keys(%{$token->[2]})) {
2564: if ($key =~ /^onunload$/i) {
2565: $onUnload.=$token->[2]->{$key}.';';
2566: delete($token->[2]->{$key});
2567: }
2568: }
2569: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2570: ';'.$onUnload;
2571:
2572: $currentstring .= '<'.$token->[1];
2573: foreach (keys %{$token->[2]}) {
2574: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2575: }
2576: $currentstring.='>';
2577: }
2578: return $currentstring;
2579: }
2580:
2581: sub end_frameset {
2582: my ($target,$token) = @_;
2583: my $currentstring = '';
2584: if ($target eq 'web') {
2585: $currentstring = $token->[2];
2586: }
2587: return $currentstring;
2588: }
2589:
2590: #-- <xmp> (end tag required)
2591: sub start_xmp {
2592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2593: my $currentstring = '';
2594: if ($target eq 'web') {
2595: $currentstring .= $token->[4];
2596: } elsif ($target eq 'tex') {
2597: $currentstring .= '\begin{verbatim}';
2598: }
2599: return $currentstring;
2600: }
2601:
2602: sub end_xmp {
2603: my ($target,$token) = @_;
2604: my $currentstring = '';
2605: if ($target eq 'web') {
2606: $currentstring .= $token->[2];
2607: } elsif ($target eq 'tex') {
2608: $currentstring .= '\end{verbatim}';
2609: }
2610: return $currentstring;
2611: }
2612:
2613: #-- <pre> (end tag required)
2614: sub start_pre {
2615: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2616: my $currentstring = '';
2617: if ($target eq 'web') {
2618: $currentstring .= $token->[4];
2619: } elsif ($target eq 'tex') {
2620: $currentstring .= '\begin{verbatim}';
2621: }
2622: return $currentstring;
2623: }
2624:
2625: sub end_pre {
2626: my ($target,$token) = @_;
2627: my $currentstring = '';
2628: if ($target eq 'web') {
2629: $currentstring .= $token->[2];
2630: } elsif ($target eq 'tex') {
2631: $currentstring .= '\end{verbatim}';
2632: }
2633: return $currentstring;
2634: }
2635:
2636: #-- <insert>
2637: sub start_insert {
2638: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2639: my $currentstring = '';
2640: if ($target eq 'web') {
2641: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2642: $currentstring .= '<b>'.$display.'</b>';;
2643: }
2644: return $currentstring;
2645: }
2646:
2647: sub end_insert {
2648: my ($target,$token) = @_;
2649: my $currentstring = '';
2650: if ($target eq 'web') {
2651: $currentstring .= '';
2652: }
2653: return $currentstring;
2654: }
2655:
2656: #-- <externallink>
2657: sub start_externallink {
2658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2659: my $currentstring = '';
2660: if ($target eq 'web') {
2661: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2662: $currentstring .= '<b>'.$display.'</b>';;
2663: }
2664: return $currentstring;
2665: }
2666:
2667: sub end_externallink {
2668: my ($target,$token) = @_;
2669: my $currentstring = '';
2670: if ($target eq 'web') {
2671: $currentstring .= '';
2672: }
2673: return $currentstring;
2674: }
2675:
2676: #-- <blankspace heigth="">
2677: sub start_blankspace {
2678: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2679: my $currentstring = '';
2680: if ($target eq 'tex') {
2681: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2682: $currentstring .= '\vskip '.$howmuch.' ';
2683: }
2684: return $currentstring;
2685: }
2686:
2687: sub end_blankspace {
2688: my ($target,$token) = @_;
2689: my $currentstring = '';
2690: if ($target eq 'tex') {
2691: $currentstring .= '';
2692: }
2693: return $currentstring;
2694: }
2695:
2696: #-- <abbr> tag (end tag required)
2697: sub start_abbr {
2698: my ($target,$token) = @_;
2699: my $currentstring = '';
2700: if ($target eq 'web') {
2701: $currentstring = $token->[4];
2702: }
2703: return $currentstring;
2704: }
2705:
2706: sub end_abbr {
2707: my ($target,$token) = @_;
2708: my $currentstring = '';
2709: if ($target eq 'web') {
2710: $currentstring = $token->[2];
2711: }
2712: return $currentstring;
2713: }
2714:
2715: #-- <acronym> tag (end tag required)
2716: sub start_acronym {
2717: my ($target,$token) = @_;
2718: my $currentstring = '';
2719: if ($target eq 'web') {
2720: $currentstring = $token->[4];
2721: }
2722: return $currentstring;
2723: }
2724:
2725: sub end_acronym {
2726: my ($target,$token) = @_;
2727: my $currentstring = '';
2728: if ($target eq 'web') {
2729: $currentstring = $token->[2];
2730: }
2731: return $currentstring;
2732: }
2733:
2734: #-- <area> tag (end tag forbidden)
2735: sub start_area {
2736: my ($target,$token) = @_;
2737: my $currentstring = '';
2738: if ($target eq 'web') {
2739: $currentstring = $token->[4];
2740: }
2741: return $currentstring;
2742: }
2743:
2744: sub end_area {
2745: my ($target,$token) = @_;
2746: my $currentstring = '';
2747: if ($target eq 'web') {
2748: $currentstring = $token->[2];
2749: }
2750: return $currentstring;
2751: }
2752:
2753: #-- <base> tag (end tag forbidden)
2754: sub start_base {
2755: my ($target,$token) = @_;
2756: my $currentstring = '';
2757: if ($target eq 'web') {
2758: $currentstring = $token->[4];
2759: }
2760: return $currentstring;
2761: }
2762:
2763: sub end_base {
2764: my ($target,$token) = @_;
2765: my $currentstring = '';
2766: if ($target eq 'web') {
2767: $currentstring = $token->[2];
2768: }
2769: return $currentstring;
2770: }
2771:
2772: #-- <bdo> tag (end tag required)
2773: sub start_bdo {
2774: my ($target,$token) = @_;
2775: my $currentstring = '';
2776: if ($target eq 'web') {
2777: $currentstring = $token->[4];
2778: }
2779: return $currentstring;
2780: }
2781:
2782: sub end_bdo {
2783: my ($target,$token) = @_;
2784: my $currentstring = '';
2785: if ($target eq 'web') {
2786: $currentstring = $token->[2];
2787: }
2788: return $currentstring;
2789: }
2790:
2791: #-- <bgsound> tag (end tag optional)
2792: sub start_bgsound {
2793: my ($target,$token) = @_;
2794: my $currentstring = '';
2795: if ($target eq 'web') {
2796: $currentstring = $token->[4];
2797: }
2798: return $currentstring;
2799: }
2800:
2801: sub end_bgsound {
2802: my ($target,$token) = @_;
2803: my $currentstring = '';
2804: if ($target eq 'web') {
2805: $currentstring = $token->[2];
2806: }
2807: return $currentstring;
2808: }
2809:
2810: #-- <blink> tag (end tag required)
2811: sub start_blink {
2812: my ($target,$token) = @_;
2813: my $currentstring = '';
2814: if ($target eq 'web') {
2815: $currentstring = $token->[4];
2816: }
2817: return $currentstring;
2818: }
2819:
2820: sub end_blink {
2821: my ($target,$token) = @_;
2822: my $currentstring = '';
2823: if ($target eq 'web') {
2824: $currentstring = $token->[2];
2825: }
2826: return $currentstring;
2827: }
2828:
2829: #-- <blockquote> tag (end tag required)
2830: sub start_blockquote {
2831: my ($target,$token) = @_;
2832: my $currentstring = '';
2833: if ($target eq 'web') {
2834: $currentstring = $token->[4];
2835: }
2836: return $currentstring;
2837: }
2838:
2839: sub end_blockquote {
2840: my ($target,$token) = @_;
2841: my $currentstring = '';
2842: if ($target eq 'web') {
2843: $currentstring = $token->[2];
2844: }
2845: return $currentstring;
2846: }
2847:
2848: #-- <button> tag (end tag required)
2849: sub start_button {
2850: my ($target,$token) = @_;
2851: my $currentstring = '';
2852: if ($target eq 'web') {
2853: $currentstring = $token->[4];
2854: }
2855: return $currentstring;
2856: }
2857:
2858: sub end_button {
2859: my ($target,$token) = @_;
2860: my $currentstring = '';
2861: if ($target eq 'web') {
2862: $currentstring = $token->[2];
2863: }
2864: return $currentstring;
2865: }
2866:
2867: #-- <caption> tag (end tag required)
2868: sub start_caption {
2869: my ($target,$token) = @_;
2870: my $currentstring = '';
2871: if ($target eq 'web') {
2872: $currentstring = $token->[4];
2873: }
2874: return $currentstring;
2875: }
2876:
2877: sub end_caption {
2878: my ($target,$token) = @_;
2879: my $currentstring = '';
2880: if ($target eq 'web') {
2881: $currentstring = $token->[2];
2882: }
2883: return $currentstring;
2884: }
2885:
2886: #-- <col> tag (end tag forbdden)
2887: sub start_col {
2888: my ($target,$token) = @_;
2889: my $currentstring = '';
2890: if ($target eq 'web') {
2891: $currentstring = $token->[4];
2892: }
2893: return $currentstring;
2894: }
2895:
2896: sub end_col {
2897: my ($target,$token) = @_;
2898: my $currentstring = '';
2899: if ($target eq 'web') {
2900: $currentstring = $token->[2];
2901: }
2902: return $currentstring;
2903: }
2904:
2905: #-- <colgroup> tag (end tag optional)
2906: sub start_colgroup {
2907: my ($target,$token) = @_;
2908: my $currentstring = '';
2909: if ($target eq 'web') {
2910: $currentstring = $token->[4];
2911: }
2912: return $currentstring;
2913: }
2914:
2915: sub end_colgroup {
2916: my ($target,$token) = @_;
2917: my $currentstring = '';
2918: if ($target eq 'web') {
2919: $currentstring = $token->[2];
2920: }
2921: return $currentstring;
2922: }
2923:
2924: #-- <del> tag (end tag required)
2925: sub start_del {
2926: my ($target,$token) = @_;
2927: my $currentstring = '';
2928: if ($target eq 'web') {
2929: $currentstring = $token->[4];
2930: }
2931: return $currentstring;
2932: }
2933:
2934: sub end_del {
2935: my ($target,$token) = @_;
2936: my $currentstring = '';
2937: if ($target eq 'web') {
2938: $currentstring = $token->[2];
2939: }
2940: return $currentstring;
2941: }
2942:
2943: #-- <fieldset> tag (end tag required)
2944: sub start_fieldset {
2945: my ($target,$token) = @_;
2946: my $currentstring = '';
2947: if ($target eq 'web') {
2948: $currentstring = $token->[4];
2949: }
2950: return $currentstring;
2951: }
2952:
2953: sub end_fieldset {
2954: my ($target,$token) = @_;
2955: my $currentstring = '';
2956: if ($target eq 'web') {
2957: $currentstring = $token->[2];
2958: }
2959: return $currentstring;
2960: }
2961:
2962: #-- <frame> tag (end tag forbidden)
2963: sub start_frame {
2964: my ($target,$token) = @_;
2965: my $currentstring = '';
2966: if ($target eq 'web') {
2967: $currentstring = $token->[4];
2968: }
2969: return $currentstring;
2970: }
2971:
2972: sub end_frame {
2973: my ($target,$token) = @_;
2974: my $currentstring = '';
2975: if ($target eq 'web') {
2976: $currentstring = $token->[2];
2977: }
2978: return $currentstring;
2979: }
2980:
2981: #-- <iframe> tag (end tag required)
2982: sub start_iframe {
2983: my ($target,$token) = @_;
2984: my $currentstring = '';
2985: if ($target eq 'web') {
2986: $currentstring = $token->[4];
2987: }
2988: return $currentstring;
2989: }
2990:
2991: sub end_iframe {
2992: my ($target,$token) = @_;
2993: my $currentstring = '';
2994: if ($target eq 'web') {
2995: $currentstring = $token->[2];
2996: }
2997: return $currentstring;
2998: }
2999:
3000: #-- <ins> tag (end tag required)
3001: sub start_ins {
3002: my ($target,$token) = @_;
3003: my $currentstring = '';
3004: if ($target eq 'web') {
3005: $currentstring = $token->[4];
3006: }
3007: return $currentstring;
3008: }
3009:
3010: sub end_ins {
3011: my ($target,$token) = @_;
3012: my $currentstring = '';
3013: if ($target eq 'web') {
3014: $currentstring = $token->[2];
3015: }
3016: return $currentstring;
3017: }
3018:
3019: #-- <isindex> tag (end tag forbidden)
3020: sub start_isindex {
3021: my ($target,$token) = @_;
3022: my $currentstring = '';
3023: if ($target eq 'web') {
3024: $currentstring = $token->[4];
3025: }
3026: return $currentstring;
3027: }
3028:
3029: sub end_isindex {
3030: my ($target,$token) = @_;
3031: my $currentstring = '';
3032: if ($target eq 'web') {
3033: $currentstring = $token->[2];
3034: }
3035: return $currentstring;
3036: }
3037:
3038: #-- <keygen> tag (end tag forbidden)
3039: sub start_keygen {
3040: my ($target,$token) = @_;
3041: my $currentstring = '';
3042: if ($target eq 'web') {
3043: $currentstring = $token->[4];
3044: }
3045: return $currentstring;
3046: }
3047:
3048: sub end_keygen {
3049: my ($target,$token) = @_;
3050: my $currentstring = '';
3051: if ($target eq 'web') {
3052: $currentstring = $token->[2];
3053: }
3054: return $currentstring;
3055: }
3056:
3057: #-- <label> tag
3058: sub start_label {
3059: my ($target,$token) = @_;
3060: my $currentstring = '';
3061: if ($target eq 'web') {
3062: $currentstring = $token->[4];
3063: }
3064: return $currentstring;
3065: }
3066:
3067: sub end_label {
3068: my ($target,$token) = @_;
3069: my $currentstring = '';
3070: if ($target eq 'web') {
3071: $currentstring = $token->[2];
3072: }
3073: return $currentstring;
3074: }
3075:
3076: #-- <layer> tag (end tag required)
3077: sub start_layer {
3078: my ($target,$token) = @_;
3079: my $currentstring = '';
3080: if ($target eq 'web') {
3081: $currentstring = $token->[4];
3082: }
3083: return $currentstring;
3084: }
3085:
3086: sub end_layer {
3087: my ($target,$token) = @_;
3088: my $currentstring = '';
3089: if ($target eq 'web') {
3090: $currentstring = $token->[2];
3091: }
3092: return $currentstring;
3093: }
3094:
3095: #-- <legend> tag (end tag required)
3096: sub start_legend {
3097: my ($target,$token) = @_;
3098: my $currentstring = '';
3099: if ($target eq 'web') {
3100: $currentstring = $token->[4];
3101: }
3102: return $currentstring;
3103: }
3104:
3105: sub end_legend {
3106: my ($target,$token) = @_;
3107: my $currentstring = '';
3108: if ($target eq 'web') {
3109: $currentstring = $token->[2];
3110: }
3111: return $currentstring;
3112: }
3113:
3114: #-- <link> tag (end tag forbidden)
3115: sub start_link {
3116: my ($target,$token) = @_;
3117: my $currentstring = '';
3118: if ($target eq 'web') {
3119: $currentstring = $token->[4];
3120: }
3121: return $currentstring;
3122: }
3123:
3124: sub end_link {
3125: my ($target,$token) = @_;
3126: my $currentstring = '';
3127: if ($target eq 'web') {
3128: $currentstring = $token->[2];
3129: }
3130: return $currentstring;
3131: }
3132:
3133: #-- <marquee> tag (end tag optional)
3134: sub start_marquee {
3135: my ($target,$token) = @_;
3136: my $currentstring = '';
3137: if ($target eq 'web') {
3138: $currentstring = $token->[4];
3139: }
3140: return $currentstring;
3141: }
3142:
3143: sub end_marquee {
3144: my ($target,$token) = @_;
3145: my $currentstring = '';
3146: if ($target eq 'web') {
3147: $currentstring = $token->[2];
3148: }
3149: return $currentstring;
3150: }
3151:
3152: #-- <multicol> tag (end tag required)
3153: sub start_multicol {
3154: my ($target,$token) = @_;
3155: my $currentstring = '';
3156: if ($target eq 'web') {
3157: $currentstring = $token->[4];
3158: }
3159: return $currentstring;
3160: }
3161:
3162: sub end_multicol {
3163: my ($target,$token) = @_;
3164: my $currentstring = '';
3165: if ($target eq 'web') {
3166: $currentstring = $token->[2];
3167: }
3168: return $currentstring;
3169: }
3170:
3171: #-- <nobr> tag (end tag required)
3172: sub start_nobr {
3173: my ($target,$token) = @_;
3174: my $currentstring = '';
3175: if ($target eq 'web') {
3176: $currentstring = $token->[4];
3177: } elsif ($target eq 'tex') {
3178: $currentstring='\mbox{';
3179: }
3180: return $currentstring;
3181: }
3182:
3183: sub end_nobr {
3184: my ($target,$token) = @_;
3185: my $currentstring = '';
3186: if ($target eq 'web') {
3187: $currentstring = $token->[2];
3188: } elsif ($target eq 'tex') {
3189: $currentstring='}';
3190: }
3191: return $currentstring;
3192: }
3193:
3194: #-- <noembed> tag (end tag required)
3195: sub start_noembed {
3196: my ($target,$token) = @_;
3197: my $currentstring = '';
3198: if ($target eq 'web') {
3199: $currentstring = $token->[4];
3200: }
3201: return $currentstring;
3202: }
3203:
3204: sub end_noembed {
3205: my ($target,$token) = @_;
3206: my $currentstring = '';
3207: if ($target eq 'web') {
3208: $currentstring = $token->[2];
3209: }
3210: return $currentstring;
3211: }
3212:
3213: #-- <noframes> tag (end tag required)
3214: sub start_noframes {
3215: my ($target,$token) = @_;
3216: my $currentstring = '';
3217: if ($target eq 'web') {
3218: $currentstring = $token->[4];
3219: }
3220: return $currentstring;
3221: }
3222:
3223: sub end_noframes {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'web') {
3227: $currentstring = $token->[2];
3228: }
3229: return $currentstring;
3230: }
3231:
3232: #-- <nolayer> tag (end tag required)
3233: sub start_nolayer {
3234: my ($target,$token) = @_;
3235: my $currentstring = '';
3236: if ($target eq 'web') {
3237: $currentstring = $token->[4];
3238: }
3239: return $currentstring;
3240: }
3241:
3242: sub end_nolayer {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web') {
3246: $currentstring = $token->[2];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: #-- <noscript> tag (end tag required)
3252: sub start_noscript {
3253: my ($target,$token) = @_;
3254: my $currentstring = '';
3255: if ($target eq 'web') {
3256: $currentstring = $token->[4];
3257: }
3258: return $currentstring;
3259: }
3260:
3261: sub end_noscript {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web') {
3265: $currentstring = $token->[2];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: #-- <object> tag (end tag required)
3271: sub start_object {
3272: my ($target,$token) = @_;
3273: my $currentstring = '';
3274: if ($target eq 'web') {
3275: $currentstring = $token->[4];
3276: }
3277: return $currentstring;
3278: }
3279:
3280: sub end_object {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web') {
3284: $currentstring = $token->[2];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: #-- <optgroup> tag (end tag required)
3290: sub start_optgroup {
3291: my ($target,$token) = @_;
3292: my $currentstring = '';
3293: if ($target eq 'web') {
3294: $currentstring = $token->[4];
3295: }
3296: return $currentstring;
3297: }
3298:
3299: sub end_optgroup {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web') {
3303: $currentstring = $token->[2];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: #-- <samp> tag (end tag required)
3309: sub start_samp {
3310: my ($target,$token) = @_;
3311: my $currentstring = '';
3312: if ($target eq 'web') {
3313: $currentstring = $token->[4];
3314: } elsif ($target eq 'tex') {
3315: $currentstring='\texttt{';
3316: }
3317: return $currentstring;
3318: }
3319:
3320: sub end_samp {
3321: my ($target,$token) = @_;
3322: my $currentstring = '';
3323: if ($target eq 'web') {
3324: $currentstring = $token->[2];
3325: } elsif ($target eq 'tex') {
3326: $currentstring='}';
3327: }
3328: return $currentstring;
3329: }
3330:
3331: #-- <server> tag
3332: sub start_server {
3333: my ($target,$token) = @_;
3334: my $currentstring = '';
3335: if ($target eq 'web') {
3336: $currentstring = $token->[4];
3337: }
3338: return $currentstring;
3339: }
3340:
3341: sub end_server {
3342: my ($target,$token) = @_;
3343: my $currentstring = '';
3344: if ($target eq 'web') {
3345: $currentstring = $token->[2];
3346: }
3347: return $currentstring;
3348: }
3349:
3350: #-- <spacer> tag (end tag forbidden)
3351: sub start_spacer {
3352: my ($target,$token) = @_;
3353: my $currentstring = '';
3354: if ($target eq 'web') {
3355: $currentstring = $token->[4];
3356: }
3357: return $currentstring;
3358: }
3359:
3360: sub end_spacer {
3361: my ($target,$token) = @_;
3362: my $currentstring = '';
3363: if ($target eq 'web') {
3364: $currentstring = $token->[2];
3365: }
3366: return $currentstring;
3367: }
3368:
3369: #-- <span> tag (end tag required)
3370: sub start_span {
3371: my ($target,$token) = @_;
3372: my $currentstring = '';
3373: if ($target eq 'web') {
3374: $currentstring = $token->[4];
3375: }
3376: return $currentstring;
3377: }
3378:
3379: sub end_span {
3380: my ($target,$token) = @_;
3381: my $currentstring = '';
3382: if ($target eq 'web') {
3383: $currentstring = $token->[2];
3384: }
3385: return $currentstring;
3386: }
3387:
3388: #-- <tbody> tag (end tag optional)
3389: sub start_tbody {
3390: my ($target,$token) = @_;
3391: my $currentstring = '';
3392: if ($target eq 'web') {
3393: $currentstring = $token->[4];
3394: }
3395: return $currentstring;
3396: }
3397:
3398: sub end_tbody {
3399: my ($target,$token) = @_;
3400: my $currentstring = '';
3401: if ($target eq 'web') {
3402: $currentstring = $token->[2];
3403: }
3404: return $currentstring;
3405: }
3406:
3407: #-- <tfoot> tag (end tag optional)
3408: sub start_tfoot {
3409: my ($target,$token) = @_;
3410: my $currentstring = '';
3411: if ($target eq 'web') {
3412: $currentstring = $token->[4];
3413: }
3414: return $currentstring;
3415: }
3416:
3417: sub end_tfoot {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web') {
3421: $currentstring = $token->[2];
3422: }
3423: return $currentstring;
3424: }
3425:
3426: #-- <thead> tag (end tag optional)
3427: sub start_thead {
3428: my ($target,$token) = @_;
3429: my $currentstring = '';
3430: if ($target eq 'web') {
3431: $currentstring = $token->[4];
3432: }
3433: return $currentstring;
3434: }
3435:
3436: sub end_thead {
3437: my ($target,$token) = @_;
3438: my $currentstring = '';
3439: if ($target eq 'web') {
3440: $currentstring = $token->[2];
3441: }
3442: return $currentstring;
3443: }
3444:
3445: #-- <var> tag
3446: sub start_var {
3447: my ($target,$token) = @_;
3448: my $currentstring = '';
3449: if ($target eq 'web') {
3450: $currentstring = $token->[4];
3451: } elsif ($target eq 'tex') {
3452: $currentstring = '\textit{';
3453: }
3454: return $currentstring;
3455: }
3456:
3457: sub end_var {
3458: my ($target,$token) = @_;
3459: my $currentstring = '';
3460: if ($target eq 'web') {
3461: $currentstring = $token->[2];
3462: } elsif ($target eq 'tex') {
3463: $currentstring = '}';
3464: }
3465: return $currentstring;
3466: }
3467:
3468: #-- <wbr> tag (end tag forbidden)
3469: sub start_wbr {
3470: my ($target,$token) = @_;
3471: my $currentstring = '';
3472: if ($target eq 'web') {
3473: $currentstring = $token->[4];
3474: }
3475: return $currentstring;
3476: }
3477:
3478: sub end_wbr {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web') {
3482: $currentstring = $token->[2];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: #-- <hideweboutput> tag
3488: sub start_hideweboutput {
3489: my ($target,$token) = @_;
3490: if ($target eq 'web') {
3491: &Apache::lonxml::startredirection();
3492: }
3493: return '';
3494: }
3495:
3496: sub end_hideweboutput {
3497: my ($target,$token) = @_;
3498: my $currentstring = '';
3499: if ($target eq 'web') {
3500: $currentstring = &Apache::lonxml::endredirection();
3501: }
3502: return '';
3503: }
3504:
3505:
3506: sub image_replication {
3507: my $src = shift;
3508: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3509: #replicates eps or ps
3510: my $epssrc = my $pssrc = $src;
3511: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3512: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3513: if (not -e $epssrc && not -e $pssrc) {
3514: my $result=&Apache::lonnet::repcopy($epssrc);
3515: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3516: }
3517: return '';
3518: }
3519:
3520: sub image_size {
3521: my ($src,$scaling,$parstack,$safeeval)=@_;
3522: #size of image from gif/jpg/jpeg/png
3523: my $image = Image::Magick->new;
3524: my $current_figure = $image->Read($src);
3525: my $width_param = $image->Get('width') * $scaling;;
3526: my $height_param = $image->Get('height') * $scaling;;
3527: undef $image;
3528: #do we have any specified LaTeX size of the picture?
3529: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3530: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3531: #do we have any specified web size of the picture?
3532: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3533: undef,1);
3534: if ($TeXwidth ne '') {
3535: if ($TeXwidth=~/(\d+)\s*\%/) {
3536: $width_param = $1*$ENV{'form.textwidth'}/100;
3537: } else {
3538: $width_param = $TeXwidth;
3539: }
3540: } elsif ($TeXheight ne '') {
3541: $width_param = $TeXheight/$height_param*$width_param;
3542: } elsif ($width ne '') {
3543: $width_param = $width*$scaling;
3544: }
3545: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3546: return $width_param;
3547: }
3548:
3549: sub eps_generation {
3550: my ($src,$file,$width_param) = @_;
3551: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3552: my $temp_file = Apache::File->new('>>'.$filename);
3553: print $temp_file "$src\n";
3554: my $newsrc = $src;
3555: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3556: $newsrc=~s/\/home\/httpd\/html\/res//;
3557: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3558: $newsrc=~s/\/\.\//\//;
3559: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3560: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3561: $newsrc=~s/\/home\/httpd\/lonUsers//;
3562: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3563: }
3564: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3565: }
3566:
3567: sub file_path {
3568: my $src=shift;
3569: my ($file,$path);
3570: if ($src =~ m!(.*)/([^/]*)$!) {
3571: $file = $2;
3572: $path = $1.'/';
3573: }
3574: return $file,$path;
3575: }
3576:
3577: sub recalc {
3578: my $argument = shift;
3579: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3580: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3581: my $value=$1;
3582: my $units=$2;
3583: if ($units eq 'cm') {
3584: $value*=10;
3585: } elsif ($units eq 'in') {
3586: $value*=25.4;
3587: } elsif ($units eq 'pc') {
3588: $value*=(25.4*12/72.27);
3589: } elsif ($units eq 'pt') {
3590: $value*=(25.4/72.27);
3591: }
3592: return $value.' mm';
3593: }
3594:
3595: sub LATEX_length {
3596: my $garbage=shift;
3597: $garbage=~s/^\s+$//;
3598: $garbage=~s/^\s+(\S.*)/$1/;#space before
3599: $garbage=~s/(.*\S)\s+$/$1/;#space after
3600: $garbage=~s/(\s)+/$1/;#only one space
3601: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3602: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3603: $garbage=~s/([^\\])\$/$1/g;#$
3604: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3605: $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;
3606: $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;
3607: $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;
3608: $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;
3609: $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;
3610: $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;
3611: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3612: #remove some other LaTeX command
3613: $garbage=~s|\\(\w+)\\|\\|g;
3614: $garbage=~s|\\(\w+)(\s*)|$2|g;
3615: $garbage=~s|\+|11|g;
3616: my $value=length($garbage);
3617: return $value;
3618: }
3619:
3620:
3621:
3622:
3623: 1;
3624: __END__
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