1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.226 2004/07/12 17:19:13 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: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1137: if ($align eq 'center') {
1138: $currentstring .= '\end{center}';
1139: } elsif ($align eq 'right') {
1140: $currentstring .= '}}';
1141: } elsif ($align eq 'left') {
1142: $currentstring .= '}\hfill}';
1143: }
1144: }
1145: return $currentstring;
1146: }
1147:
1148: #-- <br> tag (end tag forbidden)
1149: sub start_br {
1150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1151: my $currentstring = '';
1152: if ($target eq 'web') {
1153: $currentstring .= $token->[4];
1154: } elsif ($target eq 'tex') {
1155: if (($$tagstack[-2] eq 'b') || ($$tagstack[-2] eq 'strong') ||
1156: ($$tagstack[-2] eq 'ol') || ($$tagstack[-2] eq 'ul')) {
1157: $currentstring .= ' \vskip 0 mm ';
1158: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1159: $currentstring .= '\strut \\\\ \strut ';
1160: }
1161: }
1162: return $currentstring;
1163: }
1164:
1165: sub end_br {
1166: my ($target,$token) = @_;
1167: my $currentstring = '';
1168: if ($target eq 'web') {
1169: $currentstring .= $token->[2];
1170: }
1171: return $currentstring;
1172: }
1173:
1174: #-- <big> tag (end tag required)
1175: sub start_big {
1176: my ($target,$token) = @_;
1177: my $currentstring = '';
1178: if ($target eq 'web') {
1179: $currentstring .= $token->[4];
1180: } elsif ($target eq 'tex') {
1181: $currentstring .= '{\large ';
1182: }
1183: return $currentstring;
1184: }
1185:
1186: sub end_big {
1187: my ($target,$token) = @_;
1188: my $currentstring = '';
1189: if ($target eq 'web') {
1190: $currentstring .= $token->[2];
1191: } elsif ($target eq 'tex') {
1192: $currentstring .= '}';
1193: }
1194: return $currentstring;
1195: }
1196:
1197: #-- <small> tag (end tag required)
1198: sub start_small {
1199: my ($target,$token) = @_;
1200: my $currentstring = '';
1201: if ($target eq 'web') {
1202: $currentstring .= $token->[4];
1203: } elsif ($target eq 'tex') {
1204: $currentstring .= '{\footnotesize ';
1205: }
1206: return $currentstring;
1207: }
1208:
1209: sub end_small {
1210: my ($target,$token) = @_;
1211: my $currentstring = '';
1212: if ($target eq 'web') {
1213: $currentstring .= $token->[2];
1214: } elsif ($target eq 'tex') {
1215: $currentstring .= '}';
1216: }
1217: return $currentstring;
1218: }
1219:
1220: #-- <basefont> tag (end tag forbidden)
1221: sub start_basefont {
1222: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1223: my $currentstring = '';
1224: if ($target eq 'web') {
1225: $currentstring = $token->[4];
1226: } elsif ($target eq 'tex') {
1227: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1228: if (defined $basesize) {
1229: $currentstring = '{\\'.$basesize.' ';
1230: }
1231: }
1232: return $currentstring;
1233: }
1234:
1235: sub end_basefont {
1236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1237: my $currentstring = '';
1238: if ($target eq 'web') {
1239: $currentstring = $token->[4];
1240: } elsif ($target eq 'tex') {
1241: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1242: if (defined $basesize) {
1243: $currentstring = '}';
1244: }
1245: }
1246: return $currentstring;
1247: }
1248:
1249: #-- <font> tag (end tag required)
1250: sub start_font {
1251: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1252: my $currentstring = '';
1253: if ($target eq 'web') {
1254: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1255: if ($face!~/symbol/i) {
1256: if (($ENV{'browser.fontenhance'} eq 'on') ||
1257: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1258: }
1259: $currentstring = $token->[4];
1260: } elsif ($target eq 'tex') {
1261: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1262: if (defined $fontsize) {
1263: $currentstring = '{\\'.$fontsize.' ';
1264: }
1265: }
1266: return $currentstring;
1267: }
1268:
1269: sub end_font {
1270: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1271: my $currentstring = '';
1272: if ($target eq 'web') {
1273: $currentstring = $token->[2];
1274: } elsif ($target eq 'tex') {
1275: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1276: if (defined $fontsize) {
1277: $currentstring = '}';
1278: }
1279: }
1280: return $currentstring;
1281: }
1282:
1283: #-- <strike> tag (end tag required)
1284: sub start_strike {
1285: my ($target,$token) = @_;
1286: my $currentstring = '';
1287: if ($target eq 'web') {
1288: $currentstring .= $token->[4];
1289: } elsif ($target eq 'tex') {
1290: &Apache::lonxml::startredirection();
1291: }
1292: return $currentstring;
1293: }
1294:
1295: sub end_strike {
1296: my ($target,$token) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web') {
1299: $currentstring .= $token->[2];
1300: } elsif ($target eq 'tex') {
1301: $currentstring=&Apache::lonxml::endredirection();
1302: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1303: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1304: $currentstring=~s/(\S)\s*$/$1\}/;
1305: }
1306: return $currentstring;
1307: }
1308:
1309: #-- <s> tag (end tag required)
1310: sub start_s {
1311: my ($target,$token) = @_;
1312: my $currentstring = '';
1313: if ($target eq 'web') {
1314: $currentstring .= $token->[4];
1315: } elsif ($target eq 'tex') {
1316: &Apache::lonxml::startredirection();
1317: }
1318: return $currentstring;
1319: }
1320:
1321: sub end_s {
1322: my ($target,$token) = @_;
1323: my $currentstring = '';
1324: if ($target eq 'web') {
1325: $currentstring .= $token->[2];
1326: } elsif ($target eq 'tex') {
1327: $currentstring=&Apache::lonxml::endredirection();
1328: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1329: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1330: $currentstring=~s/(\S)\s*$/$1\}/;
1331: }
1332: return $currentstring;
1333: }
1334:
1335: #-- <sub> tag (end tag required)
1336: sub start_sub {
1337: my ($target,$token) = @_;
1338: my $currentstring = '';
1339: if ($target eq 'web') {
1340: $currentstring .= $token->[4];
1341: } elsif ($target eq 'tex') {
1342: $currentstring .= '\ensuremath{_{';
1343: }
1344: return $currentstring;
1345: }
1346:
1347: sub end_sub {
1348: my ($target,$token) = @_;
1349: my $currentstring = '';
1350: if ($target eq 'web') {
1351: $currentstring .= $token->[2];
1352: } elsif ($target eq 'tex') {
1353: $currentstring .= '}}';
1354: }
1355: return $currentstring;
1356: }
1357:
1358: #-- <sup> tag (end tag required)
1359: sub start_sup {
1360: my ($target,$token) = @_;
1361: my $currentstring = '';
1362: if ($target eq 'web') {
1363: $currentstring .= $token->[4];
1364: } elsif ($target eq 'tex') {
1365: $currentstring .= '\ensuremath{^{';
1366: }
1367: return $currentstring;
1368: }
1369:
1370: sub end_sup {
1371: my ($target,$token) = @_;
1372: my $currentstring = '';
1373: if ($target eq 'web') {
1374: $currentstring .= $token->[2];
1375: } elsif ($target eq 'tex') {
1376: $currentstring .= '}}';
1377: }
1378: return $currentstring;
1379: }
1380:
1381: #-- <hr> tag (end tag forbidden)
1382: sub start_hr {
1383: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1384: my $currentstring = '';
1385: if ($target eq 'web') {
1386: $currentstring .= $token->[4];
1387: } elsif ($target eq 'tex') {
1388: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1389: if (defined $LaTeXwidth) {
1390: if ($LaTeXwidth=~/^%/) {
1391: substr($LaTeXwidth,0,1)='';
1392: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1393: }
1394: } else {
1395: $LaTeXwidth ='0.9\textwidth';
1396: }
1397: my ($pre,$post);
1398: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1399: if (($align eq 'center') || (not defined $align)) {
1400: $pre=''; $post='';
1401: } elsif ($align eq 'left') {
1402: $pre='\rlap{'; $post='} \hfill';
1403: } elsif ($align eq 'right') {
1404: $pre=' \hfill \llap{'; $post='}';
1405: }
1406: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1407: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1408: }
1409: return $currentstring;
1410: }
1411:
1412: sub end_hr {
1413: my ($target,$token) = @_;
1414: my $currentstring = '';
1415: if ($target eq 'web') {
1416: $currentstring .= $token->[2];
1417: }
1418: return $currentstring;
1419: }
1420:
1421: #-- <div> tag (end tag required)
1422: sub start_div {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web') {
1426: $currentstring .= $token->[4];
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_div {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web') {
1435: $currentstring .= $token->[2];
1436: }
1437: return $currentstring;
1438: }
1439:
1440: #-- <a> tag (end tag required)
1441: sub start_a {
1442: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1443: my $currentstring = '';
1444: if ($target eq 'web') {
1445: $currentstring .= $token->[4];
1446: } elsif ($target eq 'tex') {
1447: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1448: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1449: if ($a=~/\S/) {
1450: $a=~s/([^\\])%/$1\\\%/g;
1451: $currentstring .= '\ref{URI: '.$a.'}';
1452: } elsif ($b=~/\S/) {
1453: $currentstring .= '\ref{Anchor: '.$b.'}';
1454: } else {
1455: $currentstring.='';
1456: }
1457: }
1458: return $currentstring;
1459: }
1460:
1461: sub end_a {
1462: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1463: my $currentstring = '';
1464: if ($target eq 'web') {
1465: $currentstring .= $token->[2];
1466: }
1467: return $currentstring;
1468: }
1469:
1470: #-- <li> tag (end tag optional)
1471: sub start_li {
1472: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1473: my $currentstring = '';
1474: if ($target eq 'web') {
1475: $currentstring = $token->[4];
1476: } elsif ($target eq 'tex') {
1477: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1478: if ($type=~/circle/) {
1479: $currentstring .= ' \item[o] ';
1480: } elsif ($type=~/square/) {
1481: $currentstring .= ' \item[$\Box$] ';
1482: } elsif ($type ne '') {
1483: $currentstring .= ' \item['.$type.'] ';
1484: } else {
1485: $currentstring .= ' \item ';
1486: }
1487: }
1488: return $currentstring;
1489: }
1490:
1491: sub end_li {
1492: my ($target,$token) = @_;
1493: my $currentstring = '';
1494: if ($target eq 'web') {
1495: $currentstring = $token->[2];
1496: }
1497: return $currentstring;
1498: }
1499:
1500: #-- <u> tag (end tag required)
1501: sub start_u {
1502: my ($target,$token) = @_;
1503: my $currentstring = '';
1504: if ($target eq 'web') {
1505: $currentstring .= $token->[4];
1506: } elsif ($target eq 'tex') {
1507: &Apache::lonxml::startredirection();
1508: }
1509: return $currentstring;
1510: }
1511:
1512: sub end_u {
1513: my ($target,$token) = @_;
1514: my $currentstring = '';
1515: if ($target eq 'web') {
1516: $currentstring .= $token->[2];
1517: } elsif ($target eq 'tex') {
1518: $currentstring=&Apache::lonxml::endredirection();
1519: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1520: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1521: $currentstring=~s/(\S)\s*$/$1\}/;
1522: }
1523: return $currentstring;
1524: }
1525:
1526: #-- <ul> tag (end tag required)
1527: sub start_ul {
1528: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1529: my $currentstring = '';
1530: if ($target eq 'web') {
1531: $currentstring = $token->[4];
1532: } elsif ($target eq 'tex') {
1533: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1534: if ($TeXtype eq 'disc') {
1535: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1536: '\renewcommand{\labelitemii}{$\bullet$}'.
1537: '\renewcommand{\labelitemiii}{$\bullet$}'.
1538: '\renewcommand{\labelitemiv}{$\bullet$}';
1539: } elsif ($TeXtype eq 'circle') {
1540: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1541: '\renewcommand{\labelitemii}{$\circ$}'.
1542: '\renewcommand{\labelitemiii}{$\circ$}'.
1543: '\renewcommand{\labelitemiv}{$\circ$}';
1544: } elsif ($TeXtype eq 'square') {
1545: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1546: '\renewcommand{\labelitemii}{$\diamond$}'.
1547: '\renewcommand{\labelitemiii}{$\diamond$}'.
1548: '\renewcommand{\labelitemiv}{$\diamond$}';
1549: }
1550: $currentstring .= '\strut \begin{itemize}';
1551: }
1552: return $currentstring;
1553: }
1554:
1555: sub end_ul {
1556: my ($target,$token) = @_;
1557: my $currentstring = '';
1558: if ($target eq 'web') {
1559: $currentstring = $token->[2];
1560: } elsif ($target eq 'tex') {
1561: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1562: '\renewcommand{\labelitemii}{$\bullet$}'.
1563: '\renewcommand{\labelitemiii}{$\bullet$}'.
1564: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1565: }
1566: return $currentstring;
1567: }
1568:
1569: #-- <menu> tag (end tag required)
1570: sub start_menu {
1571: my ($target,$token) = @_;
1572: my $currentstring = '';
1573: if ($target eq 'web') {
1574: $currentstring = $token->[4];
1575: } elsif ($target eq 'tex') {
1576: $currentstring = " \\begin{itemize} ";
1577: }
1578: return $currentstring;
1579: }
1580:
1581: sub end_menu {
1582: my ($target,$token) = @_;
1583: my $currentstring = '';
1584: if ($target eq 'web') {
1585: $currentstring = $token->[2];
1586: } elsif ($target eq 'tex') {
1587: $currentstring = " \\end{itemize}";
1588: }
1589: return $currentstring;
1590: }
1591:
1592: #-- <dir> tag (end tag required)
1593: sub start_dir {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web') {
1597: $currentstring = $token->[4];
1598: } elsif ($target eq 'tex') {
1599: $currentstring = " \\begin{itemize} ";
1600: }
1601: return $currentstring;
1602: }
1603:
1604: sub end_dir {
1605: my ($target,$token) = @_;
1606: my $currentstring = '';
1607: if ($target eq 'web') {
1608: $currentstring = $token->[2];
1609: } elsif ($target eq 'tex') {
1610: $currentstring = " \\end{itemize}";
1611: }
1612: return $currentstring;
1613: }
1614:
1615: #-- <ol> tag (end tag required)
1616: sub start_ol {
1617: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1618: my $currentstring = '';
1619: if ($target eq 'web') {
1620: $currentstring = $token->[4];
1621: } elsif ($target eq 'tex') {
1622: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1623: if ($type eq '1') {
1624: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1625: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1626: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1627: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1628: } elsif ($type eq 'A') {
1629: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1630: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1631: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1632: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1633: } elsif ($type eq 'a') {
1634: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1635: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1636: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1637: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1638: } elsif ($type eq 'i') {
1639: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1640: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1641: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1642: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1643: } elsif ($type eq 'I') {
1644: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1645: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1646: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1647: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1648: }
1649: $currentstring .= '\strut \begin{enumerate}';
1650: }
1651: return $currentstring;
1652: }
1653:
1654: sub end_ol {
1655: my ($target,$token) = @_;
1656: my $currentstring = '';
1657: if ($target eq 'web') {
1658: $currentstring = $token->[2];
1659: } elsif ($target eq 'tex') {
1660: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1661: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1662: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1663: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1664: }
1665: return $currentstring;
1666: }
1667:
1668: #-- <dl> tag (end tag required)
1669: sub start_dl {
1670: my ($target,$token) = @_;
1671: my $currentstring = '';
1672: if ($target eq 'web') {
1673: $currentstring = $token->[4];
1674: } elsif ($target eq 'tex') {
1675: $currentstring = '\begin{description}';
1676: @Apache::londefdef::description=();
1677: $Apache::londefdef::DD_redirection=0;
1678: $Apache::londefdef::DT_redirection=0;
1679: }
1680: return $currentstring;
1681: }
1682:
1683: sub end_dl {
1684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1685: my $currentstring = '';
1686: if ($target eq 'web') {
1687: $currentstring = $token->[2];
1688: } elsif ($target eq 'tex') {
1689: if ($Apache::londefdef::DT_redirection) {
1690: my $data=&item_cleanup;
1691: push @Apache::londefdef::description,'\item['.$data.']';
1692: $Apache::londefdef::DT_redirection=0;
1693: } elsif ($Apache::londefdef::DD_redirection) {
1694: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1695: }
1696: foreach my $element (@Apache::londefdef::description) {
1697: $currentstring.=' '.$element.' ';
1698: }
1699: @Apache::londefdef::description=();
1700: $currentstring.='\end{description}';
1701: }
1702: return $currentstring;
1703: }
1704:
1705: #-- <dt> tag (end tag optional)
1706: sub start_dt {
1707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1708: my $currentstring='';
1709: if ($target eq 'web') {
1710: $currentstring = $token->[4];
1711: } elsif ($target eq 'tex') {
1712: if ($Apache::londefdef::DT_redirection) {
1713: my $data=&item_cleanup;
1714: push @Apache::londefdef::description,'\item['.$data.']';
1715: $Apache::londefdef::DT_redirection=0;
1716: } elsif ($Apache::londefdef::DD_redirection) {
1717: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1718: $Apache::londefdef::DD_redirection=0;
1719: }
1720: &Apache::lonxml::startredirection();
1721: $Apache::londefdef::DT_redirection=1;
1722: }
1723: return $currentstring;
1724: }
1725:
1726: sub end_dt {
1727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1728: my $currentstring = '';
1729: if ($target eq 'web') {
1730: $currentstring = $token->[2];
1731: } elsif ($target eq 'tex') {
1732: my $data=&item_cleanup;
1733: push @Apache::londefdef::description,'\item['.$data.']';
1734: $Apache::londefdef::DT_redirection=0;
1735: }
1736: return $currentstring;
1737: }
1738:
1739: sub item_cleanup {
1740: my $item=&Apache::lonxml::endredirection();
1741: $item=~s/\\begin{center}//g;
1742: $item=~s/\\end{center}//g;
1743: return $item;
1744: }
1745:
1746: #-- <dd> tag (end tag optional)
1747: sub start_dd {
1748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1749: my $currentstring = '';
1750: if ($target eq 'web') {
1751: $currentstring = $token->[4];
1752: } elsif ($target eq 'tex') {
1753: if ($Apache::londefdef::DT_redirection) {
1754: my $data=&item_cleanup;
1755: push @Apache::londefdef::description,'\item['.$data.']';
1756: $Apache::londefdef::DT_redirection=0;
1757: }
1758: $Apache::londefdef::DD_redirection=1;
1759: &Apache::lonxml::startredirection();
1760: }
1761: return $currentstring;
1762: }
1763:
1764: sub end_dd {
1765: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1766: my $currentstring = '';
1767: if ($target eq 'web') {
1768: $currentstring = $token->[2];
1769: } elsif ($target eq 'tex') {
1770: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1771: $Apache::londefdef::DD_redirection=0;
1772: }
1773: return $currentstring;
1774: }
1775:
1776: #-- <table> tag (end tag required)
1777: #list of supported attributes: border,width,TeXwidth
1778: sub start_table {
1779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1780: my ($textwidth,$currentstring)=('','');
1781: if ($target eq 'web') {
1782: $currentstring = $token->[4];
1783: } elsif ($target eq 'tex') {
1784: my $aa = {};
1785: push @Apache::londefdef::table, $aa;
1786: $Apache::londefdef::table[-1]{'row_number'} = -1;
1787: #maximum table's width (default coincides with text line length)
1788: if ($#Apache::londefdef::table==0) {
1789: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1790: $textwidth=~/(\d+\.?\d*)/;
1791: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1792: } else {
1793: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1794: #the maximum width of nested table is determined by LATeX width of parent cell
1795: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1796: } else {
1797: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1798: my $textwidth=$Apache::londefdef::table[-2]{'width'};
1799: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1800: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1801: }
1802: }
1803: }
1804: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1805: if (not defined $TeXwidth) {
1806: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1807: if ($htmlwidth=~/%/) {
1808: $Apache::londefdef::table[-1]{'percent'}=1;
1809: $htmlwidth=~/(\d+)/;
1810: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1811: } else {
1812: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1813: }
1814: } elsif ($TeXwidth=~/%/) {
1815: $Apache::londefdef::table[-1]{'percent'}=1;
1816: $TeXwidth=~/(\d+)/;
1817: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1818: } else {
1819: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1820: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1821: }
1822: #table's border
1823: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1824: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1825: unless (defined $border) { $border = 0; }
1826: if ($border) {
1827: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1828: $Apache::londefdef::table[-1]{'vinc'} = '&';
1829: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1830: } else {
1831: $Apache::londefdef::table[-1]{'hinc'} = '';
1832: $Apache::londefdef::table[-1]{'vinc'} = '&';
1833: $Apache::londefdef::table[-1]{'vvinc'} = '';
1834: }
1835: if ($#Apache::londefdef::table==0) {
1836: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1837: }
1838: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1839: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1840: $Apache::londefdef::table[-1]{'objectlen'}=[];
1841: $Apache::londefdef::table[-1]{'maxlen'}=[];
1842: $Apache::londefdef::table[-1]{'minlen'}=[];
1843: $Apache::londefdef::table[-1]{'content'}=[];
1844: $Apache::londefdef::table[-1]{'align'}=[];
1845: $currentstring='\keephidden{NEW TABLE ENTRY}';
1846: }
1847: return $currentstring;
1848: }
1849:
1850: sub end_table {
1851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1852: my $currentstring = '';
1853: if ($target eq 'web') {
1854: $currentstring = $token->[2];
1855: } elsif ($target eq 'tex') {
1856: my $inmemory = '';
1857: my $output = '';
1858: my $WARNING='';
1859: #width of columns from TeXwidth attributes
1860: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1861: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1862: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1863: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1864: }
1865: }
1866: }
1867: #free space and number of empty columns
1868: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1869: ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
1870: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1871: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1872: $empty_columns++;
1873: } else {
1874: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1875: }
1876: }
1877: #boundaries for contents columns
1878: my @min_len=();#columns can not be narrower
1879: my @max_len=();#maximum length of column
1880: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1881: my ($localmin,$localmax)=(0,0);
1882: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1883: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1884: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1885: }
1886: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1887: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1888: }
1889: }
1890: push @min_len, $localmin;
1891: push @max_len, $localmax;
1892: }
1893: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1894: my $localmin=0,;
1895: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1896: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1897: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1898: }
1899: }
1900: if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
1901: if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
1902: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1903: $min_len[$jn]=0;
1904: $max_len[$jn]=0;
1905: }
1906: }
1907: #final adjustment of column width
1908: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1909: my @adjust=();
1910: #step 1. adjustment by maximum value
1911: my $space_neeeded=0;
1912: for (my $jn=0;$jn<=$#max_len;$jn++) {
1913: $space_neeeded=$space_neeeded+$max_len[$jn];
1914: }
1915: if ($space_neeeded<=$available_space) {
1916: for (my $jn=0;$jn<=$#max_len;$jn++) {
1917: if ($fwidth[$jn]==0) {
1918: $fwidth[$jn]=$max_len[$jn];
1919: }
1920: }
1921: } else {
1922: #step 2. adjustment by minimum value (estimation)
1923: $space_neeeded=0;
1924: for (my $jn=0;$jn<=$#min_len;$jn++) {
1925: $space_neeeded+=$min_len[$jn];
1926: }
1927: if ($space_neeeded>$available_space) {
1928: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1929: for (my $jn=0;$jn<=$#max_len;$jn++) {
1930: if ($fwidth[$jn]==0) {
1931: $fwidth[$jn]=$min_len[$jn];
1932: }
1933: }
1934: } else {
1935: #step 3. adjustment over minimal + corrections
1936: my $enlarge_coef=$available_space/$space_neeeded;
1937: my $acsessive=0;
1938: for (my $jn=0;$jn<=$#min_len;$jn++) {
1939: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1940: if ($adjust[$jn]>$max_len[$jn]) {
1941: $fwidth[$jn]=$max_len[$jn];
1942: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
1943: $adjust[$jn]=0;
1944: }
1945: }
1946: if ($acsessive>0) {
1947: #we have an excess of space and can redistribute it
1948: my $notempty_columns=0;
1949: for (my $jn=0;$jn<=$#min_len;$jn++) {
1950: if ($adjust[$jn]!=0) {
1951: $notempty_columns++;
1952: }
1953: }
1954: my $per_column=$acsessive/$notempty_columns;
1955: for (my $jn=0;$jn<=$#min_len;$jn++) {
1956: if ($adjust[$jn]!=0) {
1957: $adjust[$jn]+=$per_column;
1958: $fwidth[$jn]=$adjust[$jn];
1959: }
1960: }
1961: } else {
1962: for (my $jn=0;$jn<=$#min_len;$jn++) {
1963: $fwidth[$jn]=$adjust[$jn];
1964: }
1965: }
1966: }
1967: }
1968: #use all available width if it is defined in % or as TeXwidth
1969: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
1970: my $current=0;
1971: for (my $i=0;$i<=$#fwidth;$i++) {
1972: $current+=$fwidth[$i];
1973: }
1974: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1975: for (my $i=0;$i<=$#fwidth;$i++) {
1976: $fwidth[$i]*=$coef;
1977: }
1978: }
1979: #removing of empty columns if allowed
1980: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1981: if ($permission eq 'yes') {
1982: my @cleaned_table=();
1983: my @cleaned_header=();
1984: my $colind=0;
1985: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1986: if ($fwidth[$jn]!=0) {
1987: #we need to copy column
1988: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1989: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
1990: $cleaned_header[$colind]=$fwidth[$jn];
1991: }
1992: $colind++;
1993: }
1994: }
1995: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
1996: @fwidth=@cleaned_header;
1997: }
1998: #construct header of the table
1999: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2000: for (my $in=0;$in<=$#fwidth;$in++) {
2001: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2002: }
2003: $header_of_table .= '}';
2004: #fill the table
2005: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2006: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2007: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2008: $output.='\begin{center}';
2009: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2010: $output.=' \hfill \llap{'
2011: }
2012: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2013: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2014: $output.='\end{center}';
2015: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2016: $output.='} ';
2017: }
2018: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2019: }
2020: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2021: }
2022: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2023: if ($#Apache::londefdef::table > 0) {
2024: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2025: pop @Apache::londefdef::table;
2026: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2027: } else {
2028: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2029: pop @Apache::londefdef::table;
2030: undef @Apache::londefdef::table;
2031: }
2032: }
2033: return $currentstring;
2034: }
2035:
2036: #-- <tr> tag (end tag optional)
2037: sub start_tr {
2038: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2039: my $currentstring = '';
2040: if ($target eq 'web') {
2041: $currentstring = $token->[4];
2042: } elsif ($target eq 'tex') {
2043: $Apache::londefdef::table[-1]{'row_number'}++;
2044: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2045: if ($alignchar ne '') {
2046: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2047: } else {
2048: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2049: }
2050: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2051: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2052: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2053: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2054: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2055: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2056: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2057: }
2058: return $currentstring;
2059: }
2060:
2061: sub end_tr {
2062: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2063: my $currentstring = '';
2064: if ($target eq 'web') {
2065: $currentstring = $token->[2];
2066: } elsif ($target eq 'tex') {
2067: if ($Apache::londefdef::TD_redirection) {
2068: &end_td_tex($parstack,$parser,$safeeval);
2069: }
2070: }
2071: return $currentstring;
2072: }
2073:
2074: #-- <td> tag (end tag optional)
2075: sub start_td {
2076: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2077: my $currentstring = '';
2078: if ($target eq 'web') {
2079: $currentstring = $token->[4];
2080: } elsif ($target eq 'tex') {
2081: $Apache::londefdef::TD_redirection = 1;
2082: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2083: }
2084: return $currentstring;
2085: }
2086:
2087: sub tag_check {
2088: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2089: my @ar=@$parstack;
2090: for (my $i=$#ar-1;$i>=0;$i--) {
2091: if (lc($$tagstack[$i]) eq $good_tag) {
2092: &start_td_tex($parstack,$parser,$safeeval);
2093: last;
2094: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2095: splice @ar, $i+1;
2096: &end_td_tex(\@ar,$parser,$safeeval);
2097: &start_td_tex($parstack,$parser,$safeeval);
2098: last;
2099: }
2100: }
2101: return '';
2102: }
2103:
2104: sub start_td_tex {
2105: my ($parstack,$parser,$safeeval) = @_;
2106: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2107: if ($alignchar eq '') {
2108: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2109: }
2110: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2111: $Apache::londefdef::table[-1]{'counter_columns'}++;
2112: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2113: if (defined $TeXwidth) {
2114: my $current_length=&recalc($TeXwidth);
2115: $current_length=~/(\d+\.?\d*)/;
2116: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2117: }
2118: &Apache::lonxml::startredirection();
2119: return '';
2120: }
2121:
2122: sub end_td_tex {
2123: my ($parstack,$parser,$safeeval) = @_;
2124: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2125: my $data=&Apache::lonxml::endredirection();
2126: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2127: if (defined $TeXwidth) {
2128: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2129: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2130: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2131: } else {
2132: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2133: my $garbage_data=$data;
2134: my $fwidth=0;
2135: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2136: my $current_length=&recalc($1);
2137: $current_length=~/(\d+\.?\d*)/;
2138: if ($fwidth<$1) {$fwidth=$1;}
2139: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2140: }
2141: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2142: my $current_length=$1;
2143: if ($fwidth<$current_length) {$fwidth=$current_length;}
2144: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2145: }
2146: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2147: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2148: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2149: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2150: } else {
2151: $data=~s/^\s+(\S.*)/$1/;
2152: $data=~s/(.*\S)\s+$/$1/;
2153: $data=~s/(\s)+/$1/;
2154: my ($current_length,$min_length)=(0,0);
2155: if ($data=~/\\vskip/) {
2156: my $newdata=$data;
2157: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2158: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2159: foreach my $elementdata (@newdata) {
2160: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2161: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2162: my @words=split(/ /,$elementdata);
2163: foreach my $word (@words) {
2164: my $lengthword=2.5*&LATEX_length($word);
2165: if ($min_length<$lengthword) {$min_length=$lengthword;}
2166: }
2167: }
2168: } else {
2169: $current_length=2.5*&LATEX_length($data);
2170: my @words=split(/ /,$data);
2171: foreach my $word (@words) {
2172: my $lengthword=2.5*&LATEX_length($word);
2173: if ($min_length<$lengthword) {$min_length=$lengthword;}
2174: }
2175: }
2176: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2177: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2178: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2179: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2180: }
2181: }
2182: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2183: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2184: }
2185: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2186: return'';
2187: }
2188:
2189: sub end_td {
2190: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2191: my $currentstring = '';
2192: if ($target eq 'web') {
2193: $currentstring = $token->[2];
2194: } elsif ($target eq 'tex') {
2195: $Apache::londefdef::TD_redirection =0;
2196: &end_td_tex($parstack,$parser,$safeeval);
2197: }
2198: return $currentstring;
2199: }
2200:
2201: #-- <th> tag (end tag optional)
2202: sub start_th {
2203: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2204: my $currentstring = '';
2205: if ($target eq 'web') {
2206: $currentstring = $token->[4];
2207: } elsif ($target eq 'tex') {
2208: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2209: if ($what_to_push eq '') {
2210: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2211: }
2212: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2213: $Apache::londefdef::table[-1]{'counter_columns'}++;
2214: &Apache::lonxml::startredirection();
2215: }
2216: return $currentstring;
2217: }
2218:
2219: sub end_th {
2220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2221: my $currentstring = '';
2222: if ($target eq 'web') {
2223: $currentstring = $token->[2];
2224: } elsif ($target eq 'tex') {
2225: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2226: my $data=&Apache::lonxml::endredirection();
2227: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2228: if (defined $TeXwidth) {
2229: my $current_length=&recalc($TeXwidth);
2230: $current_length=~/(\d+)/;
2231: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2232: $Apache::londefdef::table[-1]{'length'} .= '0,';
2233: } else {
2234: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2235: my $current_length=&recalc($1);
2236: $current_length=~/(\d+)/;
2237: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2238: $Apache::londefdef::table[-1]{'length'} .= '0,';
2239: } else {
2240: $data=~/^\s*(\S.*)/;
2241: $data=$1;
2242: $data=~/(.*\S)\s*$/;
2243: $data=$1;
2244: my $current_length=2*length($data);
2245: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2246: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2247: }
2248: }
2249: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2250: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2251: }
2252: $data='\textbf{'.$data.'}';
2253: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2254: }
2255: return $currentstring;
2256: }
2257: #-- <img> tag (end tag forbidden)
2258: sub start_img {
2259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2260: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2261: undef,1);
2262: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2263: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2264: return '';
2265: }
2266: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2267: my $currentstring = '';
2268: my $scaling = .3;
2269: if ($target eq 'web') {
2270: if ($ENV{'browser.imagesuppress'} ne 'on') {
2271: $currentstring.= $token->[4];
2272: } else {
2273: my $alttag= &Apache::lonxml::get_param
2274: ('alt',$parstack,$safeeval,undef,1);
2275: unless ($alttag) {
2276: $alttag=&Apache::lonmeta::alttag
2277: ($Apache::lonxml::pwd[-1],$src);
2278: }
2279: $currentstring.='[IMAGE: '.$alttag.']';
2280: }
2281: } elsif ($target eq 'tex') {
2282: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2283: #if uploaded restore the path
2284: if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
2285: $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
2286: } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
2287: $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
2288: }
2289: #if original gif/jpg/png file exist do following:
2290: if (-e $src) {
2291: #what is the image size?
2292: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2293: my ($file,$path)=&file_path($src);
2294: my $newsrc = $src;
2295: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2296: $file=~s/\.(gif|jpg|png)$/.eps/i;
2297: #where can we find the picture?
2298: if (-e $newsrc) {
2299: #eps counterpart for image exist
2300: if ($path) {
2301: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2302: }
2303: } else {
2304: #there is no eps counterpart for image - check for ps one
2305: $newsrc =~ s/\.eps$/\.ps/;
2306: if (-e $newsrc) {
2307: #ps counterpart for image exist
2308: $file =~ s/\.eps$/\.ps/;
2309: if ($path) {
2310: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2311: }
2312: } else {
2313: #care about eps dynamical generation
2314: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2315: }
2316: }
2317: } else {
2318: #original image file doesn't exist so check the alt attribute
2319: my $alt =
2320: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2321: unless ($alt) {
2322: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2323: }
2324:
2325: if ($alt) {
2326: $currentstring .= ' '.$alt.' ';
2327: } else {
2328: #<allow> tag will care about replication
2329: }
2330: }
2331: } elsif ($target eq 'edit') {
2332: $currentstring .=&Apache::edit::tag_start($target,$token);
2333: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2334: &Apache::edit::browse('src',undef,'alt').' '.
2335: &Apache::edit::search('src',undef,'alt').'<br />';
2336: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2337: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2338: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2339: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2340: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2341: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2342: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2343: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2344: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2345: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2346: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2347: if ($width) { $currentstring.=' width="'.$width.'" '; }
2348: if ($height) { $currentstring.=' height="'.$height.'" '; }
2349: $currentstring .= ' />';
2350: } elsif ($target eq 'modified') {
2351: my ($osrc,$owidth,$oheight)=
2352: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2353: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2354: $safeeval,'src','alt',
2355: 'TeXwidth','TeXheight',
2356: 'width','height');
2357: my ($nsrc,$nwidth,$nheight)=
2358: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2359: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2360: &image_replication($loc);
2361: my ($iwidth,$iheight);
2362: if (-e $loc) {
2363: my $image = Image::Magick->new;
2364: $image->Read($loc);
2365: ($iwidth, $iheight) = ($image->Get('width'),
2366: $image->Get('height'));
2367: }
2368: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2369: # changed image or no size specified,
2370: # if they didn't explicitly change the
2371: # width or height use the ones from the image
2372: if ($iwidth && $iheight) {
2373: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2374: $token->[2]{'width'} = $iwidth;$ctag=1;
2375: }
2376: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2377: $token->[2]{'height'}=$iheight;$ctag=1;
2378: }
2379: }
2380: }
2381: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2382: # if we don't have a width or height
2383: if ($iwidth && $cwidth && !$cheight) {
2384: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2385: }
2386: if ($iheight && $cheight && !$cwidth) {
2387: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2388: }
2389: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2390: }
2391: return $currentstring;
2392: }
2393:
2394: sub end_img {
2395: my ($target,$token) = @_;
2396: my $currentstring = '';
2397: if ($target eq 'web') {
2398: $currentstring = $token->[2];
2399: } elsif ($target eq 'tex') {
2400: $currentstring = '';
2401: }
2402: return $currentstring;
2403: }
2404:
2405: #-- <applet> tag (end tag required)
2406: sub start_applet {
2407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2408:
2409: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2410: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2411:
2412: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2413: undef,1);
2414: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2415:
2416: my $currentstring = '';
2417: if ($target eq 'web') {
2418: if ($ENV{'browser.appletsuppress'} ne 'on') {
2419: $currentstring = $token->[4];
2420: } else {
2421: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2422: $safeeval,undef,1);
2423: unless ($alttag) {
2424: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2425: $code);
2426: }
2427: $currentstring='[APPLET: '.$alttag.']';
2428: }
2429: } elsif ($target eq 'tex') {
2430: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2431: $safeeval,undef,1);
2432: unless ($alttag) {
2433: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2434: undef,1);
2435: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2436: $code);
2437: }
2438: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2439: '.}\end{center}';
2440: }
2441: return $currentstring;
2442: }
2443:
2444: sub end_applet {
2445: my ($target,$token) = @_;
2446: my $currentstring = '';
2447: if ($target eq 'web') {
2448: $currentstring = $token->[2];
2449: } elsif ($target eq 'tex') {
2450: }
2451: return $currentstring;
2452: }
2453:
2454: #-- <embed> tag (end tag optional/required)
2455: sub start_embed {
2456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2457: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2458: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2459: my $currentstring = '';
2460: if ($target eq 'web') {
2461: if ($ENV{'browser.embedsuppress'} ne 'on') {
2462: $currentstring = $token->[4];
2463: } else {
2464: my $alttag=&Apache::lonxml::get_param
2465: ('alt',$parstack,$safeeval,undef,1);
2466: unless ($alttag) {
2467: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2468: }
2469: $currentstring='[EMBED: '.$alttag.']';
2470: }
2471: } elsif ($target eq 'tex') {
2472: }
2473: return $currentstring;
2474: }
2475:
2476: sub end_embed {
2477: my ($target,$token) = @_;
2478: my $currentstring = '';
2479: if ($target eq 'web') {
2480: $currentstring = $token->[2];
2481: } elsif ($target eq 'tex') {
2482: }
2483: return $currentstring;
2484: }
2485:
2486: #-- <param> tag (end tag forbidden)
2487: sub start_param {
2488: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2489: if (&Apache::lonxml::get_param
2490: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2491: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2492: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2493: }
2494: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2495: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2496: my $currentstring = '';
2497: if ($target eq 'web') {
2498: $currentstring = $token->[4];
2499: } elsif ($target eq 'tex') {
2500: }
2501: return $currentstring;
2502: }
2503:
2504: sub end_param {
2505: my ($target,$token) = @_;
2506: my $currentstring = '';
2507: if ($target eq 'web') {
2508: $currentstring = $token->[2];
2509: } elsif ($target eq 'tex') {
2510: }
2511: return $currentstring;
2512: }
2513:
2514: #-- <allow> tag
2515: sub start_allow {
2516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2517: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2518: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2519: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2520: &Apache::lonnet::clutter($src);
2521: &image_replication($src);
2522: my $result;
2523: if ($target eq 'edit') {
2524: $result .=&Apache::edit::tag_start($target,$token);
2525: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2526: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2527: } elsif ($target eq 'modified') {
2528: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2529: $safeeval,'src');
2530: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2531: }
2532: return $result;
2533: }
2534:
2535: sub end_allow {
2536: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2537: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2538: return '';
2539: }
2540:
2541: #-- Frames (end tag required)
2542: #-- <frameset>
2543: sub start_frameset {
2544: my ($target,$token) = @_;
2545: my $currentstring = '';
2546: if ($target eq 'web') {
2547: if (!$Apache::lonxml::registered &&
2548: $ENV{'request.state'} eq 'published') {
2549: $currentstring.='<head>'.
2550: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2551: }
2552: my $onLoad='';
2553: foreach my $key (keys(%{$token->[2]})) {
2554: if ($key =~ /^onload$/i) {
2555: $onLoad.=$token->[2]->{$key}.';';
2556: delete($token->[2]->{$key});
2557: }
2558: }
2559: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2560: my $onUnload='';
2561: foreach my $key (keys(%{$token->[2]})) {
2562: if ($key =~ /^onunload$/i) {
2563: $onUnload.=$token->[2]->{$key}.';';
2564: delete($token->[2]->{$key});
2565: }
2566: }
2567: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2568: ';'.$onUnload;
2569:
2570: $currentstring .= '<'.$token->[1];
2571: foreach (keys %{$token->[2]}) {
2572: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2573: }
2574: $currentstring.='>';
2575: }
2576: return $currentstring;
2577: }
2578:
2579: sub end_frameset {
2580: my ($target,$token) = @_;
2581: my $currentstring = '';
2582: if ($target eq 'web') {
2583: $currentstring = $token->[2];
2584: }
2585: return $currentstring;
2586: }
2587:
2588: #-- <xmp> (end tag required)
2589: sub start_xmp {
2590: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2591: my $currentstring = '';
2592: if ($target eq 'web') {
2593: $currentstring .= $token->[4];
2594: } elsif ($target eq 'tex') {
2595: $currentstring .= '\begin{verbatim}';
2596: }
2597: return $currentstring;
2598: }
2599:
2600: sub end_xmp {
2601: my ($target,$token) = @_;
2602: my $currentstring = '';
2603: if ($target eq 'web') {
2604: $currentstring .= $token->[2];
2605: } elsif ($target eq 'tex') {
2606: $currentstring .= '\end{verbatim}';
2607: }
2608: return $currentstring;
2609: }
2610:
2611: #-- <pre> (end tag required)
2612: sub start_pre {
2613: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2614: my $currentstring = '';
2615: if ($target eq 'web') {
2616: $currentstring .= $token->[4];
2617: } elsif ($target eq 'tex') {
2618: $currentstring .= '\begin{verbatim}';
2619: }
2620: return $currentstring;
2621: }
2622:
2623: sub end_pre {
2624: my ($target,$token) = @_;
2625: my $currentstring = '';
2626: if ($target eq 'web') {
2627: $currentstring .= $token->[2];
2628: } elsif ($target eq 'tex') {
2629: $currentstring .= '\end{verbatim}';
2630: }
2631: return $currentstring;
2632: }
2633:
2634: #-- <insert>
2635: sub start_insert {
2636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2637: my $currentstring = '';
2638: if ($target eq 'web') {
2639: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2640: $currentstring .= '<b>'.$display.'</b>';;
2641: }
2642: return $currentstring;
2643: }
2644:
2645: sub end_insert {
2646: my ($target,$token) = @_;
2647: my $currentstring = '';
2648: if ($target eq 'web') {
2649: $currentstring .= '';
2650: }
2651: return $currentstring;
2652: }
2653:
2654: #-- <externallink>
2655: sub start_externallink {
2656: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2657: my $currentstring = '';
2658: if ($target eq 'web') {
2659: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2660: $currentstring .= '<b>'.$display.'</b>';;
2661: }
2662: return $currentstring;
2663: }
2664:
2665: sub end_externallink {
2666: my ($target,$token) = @_;
2667: my $currentstring = '';
2668: if ($target eq 'web') {
2669: $currentstring .= '';
2670: }
2671: return $currentstring;
2672: }
2673:
2674: #-- <blankspace heigth="">
2675: sub start_blankspace {
2676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2677: my $currentstring = '';
2678: if ($target eq 'tex') {
2679: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2680: $currentstring .= '\vskip '.$howmuch.' ';
2681: }
2682: return $currentstring;
2683: }
2684:
2685: sub end_blankspace {
2686: my ($target,$token) = @_;
2687: my $currentstring = '';
2688: if ($target eq 'tex') {
2689: $currentstring .= '';
2690: }
2691: return $currentstring;
2692: }
2693:
2694: #-- <abbr> tag (end tag required)
2695: sub start_abbr {
2696: my ($target,$token) = @_;
2697: my $currentstring = '';
2698: if ($target eq 'web') {
2699: $currentstring = $token->[4];
2700: }
2701: return $currentstring;
2702: }
2703:
2704: sub end_abbr {
2705: my ($target,$token) = @_;
2706: my $currentstring = '';
2707: if ($target eq 'web') {
2708: $currentstring = $token->[2];
2709: }
2710: return $currentstring;
2711: }
2712:
2713: #-- <acronym> tag (end tag required)
2714: sub start_acronym {
2715: my ($target,$token) = @_;
2716: my $currentstring = '';
2717: if ($target eq 'web') {
2718: $currentstring = $token->[4];
2719: }
2720: return $currentstring;
2721: }
2722:
2723: sub end_acronym {
2724: my ($target,$token) = @_;
2725: my $currentstring = '';
2726: if ($target eq 'web') {
2727: $currentstring = $token->[2];
2728: }
2729: return $currentstring;
2730: }
2731:
2732: #-- <area> tag (end tag forbidden)
2733: sub start_area {
2734: my ($target,$token) = @_;
2735: my $currentstring = '';
2736: if ($target eq 'web') {
2737: $currentstring = $token->[4];
2738: }
2739: return $currentstring;
2740: }
2741:
2742: sub end_area {
2743: my ($target,$token) = @_;
2744: my $currentstring = '';
2745: if ($target eq 'web') {
2746: $currentstring = $token->[2];
2747: }
2748: return $currentstring;
2749: }
2750:
2751: #-- <base> tag (end tag forbidden)
2752: sub start_base {
2753: my ($target,$token) = @_;
2754: my $currentstring = '';
2755: if ($target eq 'web') {
2756: $currentstring = $token->[4];
2757: }
2758: return $currentstring;
2759: }
2760:
2761: sub end_base {
2762: my ($target,$token) = @_;
2763: my $currentstring = '';
2764: if ($target eq 'web') {
2765: $currentstring = $token->[2];
2766: }
2767: return $currentstring;
2768: }
2769:
2770: #-- <bdo> tag (end tag required)
2771: sub start_bdo {
2772: my ($target,$token) = @_;
2773: my $currentstring = '';
2774: if ($target eq 'web') {
2775: $currentstring = $token->[4];
2776: }
2777: return $currentstring;
2778: }
2779:
2780: sub end_bdo {
2781: my ($target,$token) = @_;
2782: my $currentstring = '';
2783: if ($target eq 'web') {
2784: $currentstring = $token->[2];
2785: }
2786: return $currentstring;
2787: }
2788:
2789: #-- <bgsound> tag (end tag optional)
2790: sub start_bgsound {
2791: my ($target,$token) = @_;
2792: my $currentstring = '';
2793: if ($target eq 'web') {
2794: $currentstring = $token->[4];
2795: }
2796: return $currentstring;
2797: }
2798:
2799: sub end_bgsound {
2800: my ($target,$token) = @_;
2801: my $currentstring = '';
2802: if ($target eq 'web') {
2803: $currentstring = $token->[2];
2804: }
2805: return $currentstring;
2806: }
2807:
2808: #-- <blink> tag (end tag required)
2809: sub start_blink {
2810: my ($target,$token) = @_;
2811: my $currentstring = '';
2812: if ($target eq 'web') {
2813: $currentstring = $token->[4];
2814: }
2815: return $currentstring;
2816: }
2817:
2818: sub end_blink {
2819: my ($target,$token) = @_;
2820: my $currentstring = '';
2821: if ($target eq 'web') {
2822: $currentstring = $token->[2];
2823: }
2824: return $currentstring;
2825: }
2826:
2827: #-- <blockquote> tag (end tag required)
2828: sub start_blockquote {
2829: my ($target,$token) = @_;
2830: my $currentstring = '';
2831: if ($target eq 'web') {
2832: $currentstring = $token->[4];
2833: }
2834: return $currentstring;
2835: }
2836:
2837: sub end_blockquote {
2838: my ($target,$token) = @_;
2839: my $currentstring = '';
2840: if ($target eq 'web') {
2841: $currentstring = $token->[2];
2842: }
2843: return $currentstring;
2844: }
2845:
2846: #-- <button> tag (end tag required)
2847: sub start_button {
2848: my ($target,$token) = @_;
2849: my $currentstring = '';
2850: if ($target eq 'web') {
2851: $currentstring = $token->[4];
2852: }
2853: return $currentstring;
2854: }
2855:
2856: sub end_button {
2857: my ($target,$token) = @_;
2858: my $currentstring = '';
2859: if ($target eq 'web') {
2860: $currentstring = $token->[2];
2861: }
2862: return $currentstring;
2863: }
2864:
2865: #-- <caption> tag (end tag required)
2866: sub start_caption {
2867: my ($target,$token) = @_;
2868: my $currentstring = '';
2869: if ($target eq 'web') {
2870: $currentstring = $token->[4];
2871: }
2872: return $currentstring;
2873: }
2874:
2875: sub end_caption {
2876: my ($target,$token) = @_;
2877: my $currentstring = '';
2878: if ($target eq 'web') {
2879: $currentstring = $token->[2];
2880: }
2881: return $currentstring;
2882: }
2883:
2884: #-- <col> tag (end tag forbdden)
2885: sub start_col {
2886: my ($target,$token) = @_;
2887: my $currentstring = '';
2888: if ($target eq 'web') {
2889: $currentstring = $token->[4];
2890: }
2891: return $currentstring;
2892: }
2893:
2894: sub end_col {
2895: my ($target,$token) = @_;
2896: my $currentstring = '';
2897: if ($target eq 'web') {
2898: $currentstring = $token->[2];
2899: }
2900: return $currentstring;
2901: }
2902:
2903: #-- <colgroup> tag (end tag optional)
2904: sub start_colgroup {
2905: my ($target,$token) = @_;
2906: my $currentstring = '';
2907: if ($target eq 'web') {
2908: $currentstring = $token->[4];
2909: }
2910: return $currentstring;
2911: }
2912:
2913: sub end_colgroup {
2914: my ($target,$token) = @_;
2915: my $currentstring = '';
2916: if ($target eq 'web') {
2917: $currentstring = $token->[2];
2918: }
2919: return $currentstring;
2920: }
2921:
2922: #-- <del> tag (end tag required)
2923: sub start_del {
2924: my ($target,$token) = @_;
2925: my $currentstring = '';
2926: if ($target eq 'web') {
2927: $currentstring = $token->[4];
2928: }
2929: return $currentstring;
2930: }
2931:
2932: sub end_del {
2933: my ($target,$token) = @_;
2934: my $currentstring = '';
2935: if ($target eq 'web') {
2936: $currentstring = $token->[2];
2937: }
2938: return $currentstring;
2939: }
2940:
2941: #-- <fieldset> tag (end tag required)
2942: sub start_fieldset {
2943: my ($target,$token) = @_;
2944: my $currentstring = '';
2945: if ($target eq 'web') {
2946: $currentstring = $token->[4];
2947: }
2948: return $currentstring;
2949: }
2950:
2951: sub end_fieldset {
2952: my ($target,$token) = @_;
2953: my $currentstring = '';
2954: if ($target eq 'web') {
2955: $currentstring = $token->[2];
2956: }
2957: return $currentstring;
2958: }
2959:
2960: #-- <frame> tag (end tag forbidden)
2961: sub start_frame {
2962: my ($target,$token) = @_;
2963: my $currentstring = '';
2964: if ($target eq 'web') {
2965: $currentstring = $token->[4];
2966: }
2967: return $currentstring;
2968: }
2969:
2970: sub end_frame {
2971: my ($target,$token) = @_;
2972: my $currentstring = '';
2973: if ($target eq 'web') {
2974: $currentstring = $token->[2];
2975: }
2976: return $currentstring;
2977: }
2978:
2979: #-- <iframe> tag (end tag required)
2980: sub start_iframe {
2981: my ($target,$token) = @_;
2982: my $currentstring = '';
2983: if ($target eq 'web') {
2984: $currentstring = $token->[4];
2985: }
2986: return $currentstring;
2987: }
2988:
2989: sub end_iframe {
2990: my ($target,$token) = @_;
2991: my $currentstring = '';
2992: if ($target eq 'web') {
2993: $currentstring = $token->[2];
2994: }
2995: return $currentstring;
2996: }
2997:
2998: #-- <ins> tag (end tag required)
2999: sub start_ins {
3000: my ($target,$token) = @_;
3001: my $currentstring = '';
3002: if ($target eq 'web') {
3003: $currentstring = $token->[4];
3004: }
3005: return $currentstring;
3006: }
3007:
3008: sub end_ins {
3009: my ($target,$token) = @_;
3010: my $currentstring = '';
3011: if ($target eq 'web') {
3012: $currentstring = $token->[2];
3013: }
3014: return $currentstring;
3015: }
3016:
3017: #-- <isindex> tag (end tag forbidden)
3018: sub start_isindex {
3019: my ($target,$token) = @_;
3020: my $currentstring = '';
3021: if ($target eq 'web') {
3022: $currentstring = $token->[4];
3023: }
3024: return $currentstring;
3025: }
3026:
3027: sub end_isindex {
3028: my ($target,$token) = @_;
3029: my $currentstring = '';
3030: if ($target eq 'web') {
3031: $currentstring = $token->[2];
3032: }
3033: return $currentstring;
3034: }
3035:
3036: #-- <keygen> tag (end tag forbidden)
3037: sub start_keygen {
3038: my ($target,$token) = @_;
3039: my $currentstring = '';
3040: if ($target eq 'web') {
3041: $currentstring = $token->[4];
3042: }
3043: return $currentstring;
3044: }
3045:
3046: sub end_keygen {
3047: my ($target,$token) = @_;
3048: my $currentstring = '';
3049: if ($target eq 'web') {
3050: $currentstring = $token->[2];
3051: }
3052: return $currentstring;
3053: }
3054:
3055: #-- <label> tag
3056: sub start_label {
3057: my ($target,$token) = @_;
3058: my $currentstring = '';
3059: if ($target eq 'web') {
3060: $currentstring = $token->[4];
3061: }
3062: return $currentstring;
3063: }
3064:
3065: sub end_label {
3066: my ($target,$token) = @_;
3067: my $currentstring = '';
3068: if ($target eq 'web') {
3069: $currentstring = $token->[2];
3070: }
3071: return $currentstring;
3072: }
3073:
3074: #-- <layer> tag (end tag required)
3075: sub start_layer {
3076: my ($target,$token) = @_;
3077: my $currentstring = '';
3078: if ($target eq 'web') {
3079: $currentstring = $token->[4];
3080: }
3081: return $currentstring;
3082: }
3083:
3084: sub end_layer {
3085: my ($target,$token) = @_;
3086: my $currentstring = '';
3087: if ($target eq 'web') {
3088: $currentstring = $token->[2];
3089: }
3090: return $currentstring;
3091: }
3092:
3093: #-- <legend> tag (end tag required)
3094: sub start_legend {
3095: my ($target,$token) = @_;
3096: my $currentstring = '';
3097: if ($target eq 'web') {
3098: $currentstring = $token->[4];
3099: }
3100: return $currentstring;
3101: }
3102:
3103: sub end_legend {
3104: my ($target,$token) = @_;
3105: my $currentstring = '';
3106: if ($target eq 'web') {
3107: $currentstring = $token->[2];
3108: }
3109: return $currentstring;
3110: }
3111:
3112: #-- <link> tag (end tag forbidden)
3113: sub start_link {
3114: my ($target,$token) = @_;
3115: my $currentstring = '';
3116: if ($target eq 'web') {
3117: $currentstring = $token->[4];
3118: }
3119: return $currentstring;
3120: }
3121:
3122: sub end_link {
3123: my ($target,$token) = @_;
3124: my $currentstring = '';
3125: if ($target eq 'web') {
3126: $currentstring = $token->[2];
3127: }
3128: return $currentstring;
3129: }
3130:
3131: #-- <marquee> tag (end tag optional)
3132: sub start_marquee {
3133: my ($target,$token) = @_;
3134: my $currentstring = '';
3135: if ($target eq 'web') {
3136: $currentstring = $token->[4];
3137: }
3138: return $currentstring;
3139: }
3140:
3141: sub end_marquee {
3142: my ($target,$token) = @_;
3143: my $currentstring = '';
3144: if ($target eq 'web') {
3145: $currentstring = $token->[2];
3146: }
3147: return $currentstring;
3148: }
3149:
3150: #-- <multicol> tag (end tag required)
3151: sub start_multicol {
3152: my ($target,$token) = @_;
3153: my $currentstring = '';
3154: if ($target eq 'web') {
3155: $currentstring = $token->[4];
3156: }
3157: return $currentstring;
3158: }
3159:
3160: sub end_multicol {
3161: my ($target,$token) = @_;
3162: my $currentstring = '';
3163: if ($target eq 'web') {
3164: $currentstring = $token->[2];
3165: }
3166: return $currentstring;
3167: }
3168:
3169: #-- <nobr> tag (end tag required)
3170: sub start_nobr {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web') {
3174: $currentstring = $token->[4];
3175: } elsif ($target eq 'tex') {
3176: $currentstring='\mbox{';
3177: }
3178: return $currentstring;
3179: }
3180:
3181: sub end_nobr {
3182: my ($target,$token) = @_;
3183: my $currentstring = '';
3184: if ($target eq 'web') {
3185: $currentstring = $token->[2];
3186: } elsif ($target eq 'tex') {
3187: $currentstring='}';
3188: }
3189: return $currentstring;
3190: }
3191:
3192: #-- <noembed> tag (end tag required)
3193: sub start_noembed {
3194: my ($target,$token) = @_;
3195: my $currentstring = '';
3196: if ($target eq 'web') {
3197: $currentstring = $token->[4];
3198: }
3199: return $currentstring;
3200: }
3201:
3202: sub end_noembed {
3203: my ($target,$token) = @_;
3204: my $currentstring = '';
3205: if ($target eq 'web') {
3206: $currentstring = $token->[2];
3207: }
3208: return $currentstring;
3209: }
3210:
3211: #-- <noframes> tag (end tag required)
3212: sub start_noframes {
3213: my ($target,$token) = @_;
3214: my $currentstring = '';
3215: if ($target eq 'web') {
3216: $currentstring = $token->[4];
3217: }
3218: return $currentstring;
3219: }
3220:
3221: sub end_noframes {
3222: my ($target,$token) = @_;
3223: my $currentstring = '';
3224: if ($target eq 'web') {
3225: $currentstring = $token->[2];
3226: }
3227: return $currentstring;
3228: }
3229:
3230: #-- <nolayer> tag (end tag required)
3231: sub start_nolayer {
3232: my ($target,$token) = @_;
3233: my $currentstring = '';
3234: if ($target eq 'web') {
3235: $currentstring = $token->[4];
3236: }
3237: return $currentstring;
3238: }
3239:
3240: sub end_nolayer {
3241: my ($target,$token) = @_;
3242: my $currentstring = '';
3243: if ($target eq 'web') {
3244: $currentstring = $token->[2];
3245: }
3246: return $currentstring;
3247: }
3248:
3249: #-- <noscript> tag (end tag required)
3250: sub start_noscript {
3251: my ($target,$token) = @_;
3252: my $currentstring = '';
3253: if ($target eq 'web') {
3254: $currentstring = $token->[4];
3255: }
3256: return $currentstring;
3257: }
3258:
3259: sub end_noscript {
3260: my ($target,$token) = @_;
3261: my $currentstring = '';
3262: if ($target eq 'web') {
3263: $currentstring = $token->[2];
3264: }
3265: return $currentstring;
3266: }
3267:
3268: #-- <object> tag (end tag required)
3269: sub start_object {
3270: my ($target,$token) = @_;
3271: my $currentstring = '';
3272: if ($target eq 'web') {
3273: $currentstring = $token->[4];
3274: }
3275: return $currentstring;
3276: }
3277:
3278: sub end_object {
3279: my ($target,$token) = @_;
3280: my $currentstring = '';
3281: if ($target eq 'web') {
3282: $currentstring = $token->[2];
3283: }
3284: return $currentstring;
3285: }
3286:
3287: #-- <optgroup> tag (end tag required)
3288: sub start_optgroup {
3289: my ($target,$token) = @_;
3290: my $currentstring = '';
3291: if ($target eq 'web') {
3292: $currentstring = $token->[4];
3293: }
3294: return $currentstring;
3295: }
3296:
3297: sub end_optgroup {
3298: my ($target,$token) = @_;
3299: my $currentstring = '';
3300: if ($target eq 'web') {
3301: $currentstring = $token->[2];
3302: }
3303: return $currentstring;
3304: }
3305:
3306: #-- <samp> tag (end tag required)
3307: sub start_samp {
3308: my ($target,$token) = @_;
3309: my $currentstring = '';
3310: if ($target eq 'web') {
3311: $currentstring = $token->[4];
3312: } elsif ($target eq 'tex') {
3313: $currentstring='\texttt{';
3314: }
3315: return $currentstring;
3316: }
3317:
3318: sub end_samp {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[2];
3323: } elsif ($target eq 'tex') {
3324: $currentstring='}';
3325: }
3326: return $currentstring;
3327: }
3328:
3329: #-- <server> tag
3330: sub start_server {
3331: my ($target,$token) = @_;
3332: my $currentstring = '';
3333: if ($target eq 'web') {
3334: $currentstring = $token->[4];
3335: }
3336: return $currentstring;
3337: }
3338:
3339: sub end_server {
3340: my ($target,$token) = @_;
3341: my $currentstring = '';
3342: if ($target eq 'web') {
3343: $currentstring = $token->[2];
3344: }
3345: return $currentstring;
3346: }
3347:
3348: #-- <spacer> tag (end tag forbidden)
3349: sub start_spacer {
3350: my ($target,$token) = @_;
3351: my $currentstring = '';
3352: if ($target eq 'web') {
3353: $currentstring = $token->[4];
3354: }
3355: return $currentstring;
3356: }
3357:
3358: sub end_spacer {
3359: my ($target,$token) = @_;
3360: my $currentstring = '';
3361: if ($target eq 'web') {
3362: $currentstring = $token->[2];
3363: }
3364: return $currentstring;
3365: }
3366:
3367: #-- <span> tag (end tag required)
3368: sub start_span {
3369: my ($target,$token) = @_;
3370: my $currentstring = '';
3371: if ($target eq 'web') {
3372: $currentstring = $token->[4];
3373: }
3374: return $currentstring;
3375: }
3376:
3377: sub end_span {
3378: my ($target,$token) = @_;
3379: my $currentstring = '';
3380: if ($target eq 'web') {
3381: $currentstring = $token->[2];
3382: }
3383: return $currentstring;
3384: }
3385:
3386: #-- <tbody> tag (end tag optional)
3387: sub start_tbody {
3388: my ($target,$token) = @_;
3389: my $currentstring = '';
3390: if ($target eq 'web') {
3391: $currentstring = $token->[4];
3392: }
3393: return $currentstring;
3394: }
3395:
3396: sub end_tbody {
3397: my ($target,$token) = @_;
3398: my $currentstring = '';
3399: if ($target eq 'web') {
3400: $currentstring = $token->[2];
3401: }
3402: return $currentstring;
3403: }
3404:
3405: #-- <tfoot> tag (end tag optional)
3406: sub start_tfoot {
3407: my ($target,$token) = @_;
3408: my $currentstring = '';
3409: if ($target eq 'web') {
3410: $currentstring = $token->[4];
3411: }
3412: return $currentstring;
3413: }
3414:
3415: sub end_tfoot {
3416: my ($target,$token) = @_;
3417: my $currentstring = '';
3418: if ($target eq 'web') {
3419: $currentstring = $token->[2];
3420: }
3421: return $currentstring;
3422: }
3423:
3424: #-- <thead> tag (end tag optional)
3425: sub start_thead {
3426: my ($target,$token) = @_;
3427: my $currentstring = '';
3428: if ($target eq 'web') {
3429: $currentstring = $token->[4];
3430: }
3431: return $currentstring;
3432: }
3433:
3434: sub end_thead {
3435: my ($target,$token) = @_;
3436: my $currentstring = '';
3437: if ($target eq 'web') {
3438: $currentstring = $token->[2];
3439: }
3440: return $currentstring;
3441: }
3442:
3443: #-- <var> tag
3444: sub start_var {
3445: my ($target,$token) = @_;
3446: my $currentstring = '';
3447: if ($target eq 'web') {
3448: $currentstring = $token->[4];
3449: } elsif ($target eq 'tex') {
3450: $currentstring = '\textit{';
3451: }
3452: return $currentstring;
3453: }
3454:
3455: sub end_var {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web') {
3459: $currentstring = $token->[2];
3460: } elsif ($target eq 'tex') {
3461: $currentstring = '}';
3462: }
3463: return $currentstring;
3464: }
3465:
3466: #-- <wbr> tag (end tag forbidden)
3467: sub start_wbr {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web') {
3471: $currentstring = $token->[4];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: sub end_wbr {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web') {
3480: $currentstring = $token->[2];
3481: }
3482: return $currentstring;
3483: }
3484:
3485: #-- <hideweboutput> tag
3486: sub start_hideweboutput {
3487: my ($target,$token) = @_;
3488: if ($target eq 'web') {
3489: &Apache::lonxml::startredirection();
3490: }
3491: return '';
3492: }
3493:
3494: sub end_hideweboutput {
3495: my ($target,$token) = @_;
3496: my $currentstring = '';
3497: if ($target eq 'web') {
3498: $currentstring = &Apache::lonxml::endredirection();
3499: }
3500: return '';
3501: }
3502:
3503:
3504: sub image_replication {
3505: my $src = shift;
3506: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3507: #replicates eps or ps
3508: my $epssrc = my $pssrc = $src;
3509: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3510: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3511: if (not -e $epssrc && not -e $pssrc) {
3512: my $result=&Apache::lonnet::repcopy($epssrc);
3513: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3514: }
3515: return '';
3516: }
3517:
3518: sub image_size {
3519: my ($src,$scaling,$parstack,$safeeval)=@_;
3520: #size of image from gif/jpg/jpeg/png
3521: my $image = Image::Magick->new;
3522: my $current_figure = $image->Read($src);
3523: my $width_param = $image->Get('width') * $scaling;;
3524: my $height_param = $image->Get('height') * $scaling;;
3525: undef $image;
3526: #do we have any specified LaTeX size of the picture?
3527: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3528: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3529: #do we have any specified web size of the picture?
3530: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3531: undef,1);
3532: if ($TeXwidth ne '') {
3533: if ($TeXwidth=~/(\d+)\s*\%/) {
3534: $width_param = $1*$ENV{'form.textwidth'}/100;
3535: } else {
3536: $width_param = $TeXwidth;
3537: }
3538: } elsif ($TeXheight ne '') {
3539: $width_param = $TeXheight/$height_param*$width_param;
3540: } elsif ($width ne '') {
3541: $width_param = $width*$scaling;
3542: }
3543: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3544: return $width_param;
3545: }
3546:
3547: sub eps_generation {
3548: my ($src,$file,$width_param) = @_;
3549: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3550: my $temp_file = Apache::File->new('>>'.$filename);
3551: print $temp_file "$src\n";
3552: my $newsrc = $src;
3553: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3554: $newsrc=~s/\/home\/httpd\/html\/res//;
3555: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3556: $newsrc=~s/\/\.\//\//;
3557: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3558: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3559: $newsrc=~s/\/home\/httpd\/lonUsers//;
3560: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3561: }
3562: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3563: }
3564:
3565: sub file_path {
3566: my $src=shift;
3567: my ($file,$path);
3568: if ($src =~ m!(.*)/([^/]*)$!) {
3569: $file = $2;
3570: $path = $1.'/';
3571: }
3572: return $file,$path;
3573: }
3574:
3575: sub recalc {
3576: my $argument = shift;
3577: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3578: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3579: my $value=$1;
3580: my $units=$2;
3581: if ($units eq 'cm') {
3582: $value*=10;
3583: } elsif ($units eq 'in') {
3584: $value*=25.4;
3585: } elsif ($units eq 'pc') {
3586: $value*=(25.4*12/72.27);
3587: } elsif ($units eq 'pt') {
3588: $value*=(25.4/72.27);
3589: }
3590: return $value.' mm';
3591: }
3592:
3593: sub LATEX_length {
3594: my $garbage=shift;
3595: $garbage=~s/^\s+$//;
3596: $garbage=~s/^\s+(\S.*)/$1/;#space before
3597: $garbage=~s/(.*\S)\s+$/$1/;#space after
3598: $garbage=~s/(\s)+/$1/;#only one space
3599: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3600: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3601: $garbage=~s/([^\\])\$/$1/g;#$
3602: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3603: $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;
3604: $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;
3605: $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;
3606: $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;
3607: $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;
3608: $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;
3609: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3610: #remove some other LaTeX command
3611: $garbage=~s|\\(\w+)\\|\\|g;
3612: $garbage=~s|\\(\w+)(\s*)|$2|g;
3613: $garbage=~s|\+|11|g;
3614: my $value=length($garbage);
3615: return $value;
3616: }
3617:
3618:
3619:
3620:
3621: 1;
3622: __END__
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