1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.253 2005/02/09 15:47:06 www 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: package Apache::londefdef;
41:
42: use Apache::lonnet();
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50:
51:
52: BEGIN {
53:
54: &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'));
55:
56: }
57:
58: sub initialize_londefdef {
59: $Apache::londefdef::TD_redirection=0;
60: @Apache::londefdef::table = ();
61: $Apache::londefdef::select=0;
62: undef(@Apache::londefdef::description);
63: @Apache::londefdef::DD=(0);
64: @Apache::londefdef::DT=(0);
65: @Apache::londefdef::seenDT=(0);
66: $Apache::londefdef::list_index=0;
67: }
68:
69: #======================= TAG SUBROUTINES =====================
70: #-- <output>
71: sub start_output {
72: my ($target) = @_;
73: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
74: return '';
75: }
76: sub end_output {
77: my ($target) = @_;
78: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
79: return '';
80: }
81: #-- <m> tag
82: sub start_m {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
84: my $currentstring = '';
85: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
86: if ($target eq 'web' || $target eq 'analyze') {
87: $inside ='\\documentstyle{article}'.$inside;
88: &Apache::lonxml::debug("M is starting with:$inside:");
89: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
90: if ($eval eq 'on') {
91: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
92: #&Apache::lonxml::debug("M is evaulated to:$inside:");
93: }
94: $currentstring = &Apache::lontexconvert::converted(\$inside);
95: if ($Apache::lontexconvert::errorstring) {
96: &Apache::lonxml::warning("tth error: ".
97: $Apache::lontexconvert::errorstring);
98: $Apache::lontexconvert::errorstring='';
99: }
100: #&Apache::lonxml::debug("M is ends with:$currentstring:");
101: $Apache::lonxml::post_evaluate=0;
102: } elsif ($target eq 'tex') {
103: $currentstring = $inside;
104: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
105: if ($eval eq 'on') {
106: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
107: }
108: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
109: $Apache::lonxml::post_evaluate=0;
110: }
111: return $currentstring;
112: }
113:
114: sub end_m {
115: my ($target,$token) = @_;
116: my $currentstring = '';
117: if ($target eq 'tex') {
118: $currentstring = "";
119: }
120: return $currentstring;
121: }
122:
123: sub start_tthoption {
124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
125: my $result;
126: if ($target eq 'web') {
127: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
128: $inside=~s/^\s*//;
129: if ($ENV{'browser.mathml'}) {
130: &tth::ttmoptions($inside);
131: } else {
132: &tth::tthoptions($inside);
133: }
134: }
135: return $result;
136: }
137:
138: sub end_tthoption {
139: my ($target,$token) = @_;
140: my $result;
141: return $result;
142: }
143:
144: #-- <html> tag (end tag optional)
145: sub start_html {
146: my ($target,$token) = @_;
147: my $currentstring = '';
148: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
149: &Apache::lontexconvert::init_tth();
150: if ($target eq 'web' || $target eq 'edit') {
151: $currentstring = &Apache::lonxml::xmlbegin();
152: } elsif ($target eq 'tex') {
153: @Apache::londefdef::table = ();
154: $currentstring .= '\documentclass[letterpaper]{article}';
155: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
156: $currentstring .= '\newcommand{\keephidden}[1]{}'.
157: '\renewcommand{\deg}{$^{\circ}$}'.
158: '\usepackage{longtable}'.
159: '\usepackage{textcomp}'.
160: '\usepackage{makeidx}'.
161: '\usepackage[dvips]{graphicx}'.
162: '\usepackage{picins}'.
163: '\usepackage{epsfig}'.
164: '\usepackage{calc}'.
165: '\usepackage{amsmath}'.
166: '\usepackage{amssymb}'.
167: '\usepackage{amsfonts}'.
168: '\usepackage{amsthm}'.
169: '\usepackage{amscd}'.
170: '\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}}'.
171: '\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}}';
172: }
173: return $currentstring;
174: }
175:
176: sub end_html {
177: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
178: my $currentstring = '';
179: if ($target eq 'web') {
180: $currentstring = &Apache::lonxml::xmlend($target,$parser);
181: }
182: return $currentstring;
183: }
184:
185: #-- <head> tag (end tag optional)
186: sub start_head {
187: my ($target,$token) = @_;
188: my $currentstring = '';
189: if ($target eq 'web') {
190: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
191: }
192: return $currentstring;
193: }
194:
195: sub end_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
199: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
200: $token->[2];
201: }
202: return $currentstring;
203: }
204:
205: #-- <map> tag (end tag required)
206: sub start_map {
207: my ($target,$token) = @_;
208: my $currentstring = '';
209: if ($target eq 'web') {
210: $currentstring = $token->[4];
211: }
212: return $currentstring;
213: }
214:
215: sub end_map {
216: my ($target,$token) = @_;
217: my $currentstring = '';
218: if ($target eq 'web') {
219: $currentstring = $token->[2];
220: }
221: return $currentstring;
222: }
223:
224: #-- <select> tag (end tag required)
225: sub start_select {
226: my ($target,$token) = @_;
227: my $currentstring = '';
228: if ($target eq 'web') {
229: $currentstring = $token->[4];
230: } elsif ($target eq 'tex') {
231: $Apache::londefdef::select=0;
232: }
233: return $currentstring;
234: }
235:
236: sub end_select {
237: my ($target,$token) = @_;
238: my $currentstring = '';
239: if ($target eq 'web') {
240: $currentstring = $token->[2];
241: }
242: return $currentstring;
243: }
244:
245: #-- <option> tag (end tag optional)
246: sub start_option {
247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
248: my $currentstring = '';
249: if ($target eq 'web') {
250: $currentstring = $token->[4];
251: } elsif ($target eq 'tex') {
252: $Apache::londefdef::select++;
253: if ($Apache::londefdef::select == 1) {
254: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
255: } else {
256: $currentstring='\keephidden{';
257: }
258: }
259: return $currentstring;
260: }
261:
262: sub end_option {
263: my ($target,$token) = @_;
264: my $currentstring = '';
265: if ($target eq 'web') {
266: $currentstring = $token->[2];
267: } elsif ($target eq 'tex') {
268: $currentstring='}';
269: }
270: return $currentstring;
271: }
272:
273: #-- <input> tag (end tag forbidden)
274: sub start_input {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web') {
278: $currentstring = $token->[4];
279: }
280: return $currentstring;
281: }
282:
283: sub end_input {
284: my ($target,$token) = @_;
285: my $currentstring = '';
286: if ($target eq 'web') {
287: $currentstring = $token->[2];
288: }
289: return $currentstring;
290: }
291:
292: #-- <textarea> tag (end tag required)
293: sub start_textarea {
294: my ($target,$token) = @_;
295: my $currentstring = '';
296: if ($target eq 'web') {
297: $currentstring = $token->[4];
298: }
299: return $currentstring;
300: }
301:
302: sub end_textarea {
303: my ($target,$token) = @_;
304: my $currentstring = '';
305: if ($target eq 'web') {
306: $currentstring = $token->[2];
307: }
308: return $currentstring;
309: }
310:
311: #-- <form> tag (end tag required)
312: sub start_form {
313: my ($target,$token) = @_;
314: my $currentstring = '';
315: if ($target eq 'web') {
316: $currentstring = $token->[4];
317: }
318: return $currentstring;
319: }
320:
321: sub end_form {
322: my ($target,$token) = @_;
323: my $currentstring = '';
324: if ($target eq 'web') {
325: $currentstring = $token->[2];
326: }
327: return $currentstring;
328: }
329:
330: #-- <title> tag (end tag required)
331: sub start_title {
332: my ($target,$token) = @_;
333: my $currentstring = '';
334: if ($target eq 'web') {
335: $currentstring = $token->[4];
336: } elsif ($target eq 'tex') {
337: $currentstring .= '\keephidden{Title of the document: '
338: }
339: if ($target eq 'meta') {
340: $currentstring='<title>';
341: &start_output($target);
342: }
343: return $currentstring;
344: }
345:
346: sub end_title {
347: my ($target,$token) = @_;
348: my $currentstring = '';
349: if ($target eq 'web') {
350: $currentstring = $token->[2];
351: } elsif ($target eq 'tex') {
352: $currentstring .= '}';
353: }
354: if ($target eq 'meta') {
355: &end_output($target);
356: $currentstring='</title>';
357: }
358: return $currentstring;
359: }
360:
361: #-- <meta> tag (end tag forbidden)
362: sub start_meta {
363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
364: my $currentstring = '';
365: if ($target eq 'web') {
366: my $args='';
367: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
368: if ($args eq '') {
369: &Apache::lonxml::get_all_text("/meta",$parser);
370: } else {
371: $currentstring = $token->[4];
372: }
373: } elsif ($target eq 'meta') {
374: unless (&Apache::lonxml::get_param
375: ('http-equiv',$parstack,$safeeval,undef,1)) {
376: my $name=$token->[2]->{'name'};
377: $name=~tr/A-Z/a-z/;
378: $name=~s/\s/\_/gs;
379: $name=~s/\W//gs;
380: if ($name) {
381: $currentstring='<'.$name;
382: my $display=&Apache::lonxml::get_param
383: ('display',$parstack,$safeeval,undef,1);
384: if ($display) {
385: $display=~s/\"/\'/g;
386: $currentstring.=' display="'.$display.'"';
387: }
388: $currentstring.='>'.
389: &Apache::lonxml::get_param
390: ('content',$parstack,$safeeval,undef,1).
391: '</'.$name.'>';
392: }
393: my $display=&Apache::lonxml::get_param
394: ('display',$parstack,$safeeval,undef,1);
395: if ($display) {
396: $display=&HTML::Entities::encode($display,'<>&"');
397: $currentstring.='<'.$name.'.display>'.$display.
398: '</'.$name.'.display>';
399: }
400: }
401: } elsif ($target eq 'tex') {
402: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
403: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
404: if ((not defined $content) && (not defined $name)) {
405: &Apache::lonxml::startredirection();
406: }
407: }
408: return $currentstring;
409: }
410:
411: sub end_meta {
412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
413: my $currentstring = '';
414: if ($target eq 'web') {
415: my $args='';
416: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
417: if ($args ne '') {
418: $currentstring = $token->[4];
419: }
420: } elsif ($target eq 'tex') {
421: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
422: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
423: if ((not defined $content) && (not defined $name)) {
424: &Apache::lonxml::endredirection();
425: }
426: }
427: return $currentstring;
428: }
429:
430: # accessrule
431: sub start_accessrule {
432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
433: my $currentstring = '';
434: my $eff=&Apache::lonxml::get_param
435: ('effect',$parstack,$safeeval,undef,1);
436: my $realm=&Apache::lonxml::get_param
437: ('realm',$parstack,$safeeval,undef,1);
438: my $role=&Apache::lonxml::get_param
439: ('role',$parstack,$safeeval,undef,1);
440: $realm=~s/\s+//g;
441: $realm=~s/\//\_/g;
442: $realm=~s/^\_//;
443: $realm=~s/\W/\;/g;
444: $role=~s/\s+//g;
445: $role=~s/\//\_/g;
446: $role=~s/\W/\;/g;
447: if ($target eq 'web') {
448: my $args='';
449: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
450: if ($args eq '') {
451: &Apache::lonxml::get_all_text("/accessrule",$parser);
452: } else {
453: $currentstring = $token->[4];
454: }
455: }
456: if ($target eq 'meta') {
457: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
458: }
459: return $currentstring;
460: }
461:
462: sub end_accessrule {
463: my ($target,$token,$tagstack,$parstack,$parser) = @_;
464: my $currentstring = '';
465: if ($target eq 'web') {
466: my $args='';
467: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
468: if ($args ne '') {
469: $currentstring = $token->[4];
470: }
471: }
472: return $currentstring;
473: }
474:
475: #-- <body> tag (end tag required)
476: sub start_body {
477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
478: my $currentstring = '';
479:
480: if ($target eq 'web') {
481: if ($Apache::lonhomework::parsing_a_problem) {
482: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
483: return '';
484: }
485: if (!$Apache::lonxml::registered &&
486: $ENV{'request.state'} eq 'published') {
487: $currentstring.='<head>'.
488: &Apache::lonmenu::registerurl(undef,$target).'</head>';
489: }
490: # Accessibility
491: if ($ENV{'browser.imagesuppress'} eq 'on') {
492: delete($token->[2]->{'background'});
493: }
494: if ($ENV{'browser.fontenhance'} eq 'on') {
495: my $style='';
496: foreach my $key (keys(%{$token->[2]})) {
497: if ($key =~ /^style$/i) {
498: $style.=$token->[2]->{$key}.';';
499: delete($token->[2]->{$key});
500: }
501: }
502: $token->[2]->{'style'}=$style.'; font-size: x-large;';
503: }
504: if ($ENV{'browser.blackwhite'} eq 'on') {
505: delete($token->[2]->{'font'});
506: delete($token->[2]->{'link'});
507: delete($token->[2]->{'alink'});
508: delete($token->[2]->{'vlink'});
509: delete($token->[2]->{'bgcolor'});
510: delete($token->[2]->{'background'});
511: }
512: # Overload loads
513: my $onLoad='';
514: foreach my $key (keys(%{$token->[2]})) {
515: if ($key =~ /^onload$/i) {
516: $onLoad.=$token->[2]->{$key}.';';
517: delete($token->[2]->{$key});
518: }
519: }
520: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
521: my $onUnload='';
522: foreach my $key (keys(%{$token->[2]})) {
523: if ($key =~ /^onunload$/i) {
524: $onUnload.=$token->[2]->{$key}.';';
525: delete($token->[2]->{$key});
526: }
527: }
528: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
529: ';'.$onUnload;
530:
531: if ($ENV{'request.state'} ne 'construct') {
532: $currentstring .= '<'.$token->[1];
533: }
534: foreach (keys %{$token->[2]}) {
535: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
536: }
537: if ($ENV{'request.state'} ne 'construct') {
538: $currentstring.='>';
539: }
540: if ($ENV{'request.state'} ne 'published') {
541: my $remote=($ENV{'environment.remote'} ne 'off');
542: $currentstring=&Apache::loncommon::bodytag(undef,undef,
543: $currentstring,$remote);
544: $currentstring.=(<<EDITBUTTON);
545: <form method="post">
546: <input type="submit" name="editmode" accesskey="e" value="Edit" />
547: </form>
548: EDITBUTTON
549: } else {
550: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
551: }
552: $currentstring.=&Apache::lonxml::message_location();
553: } elsif ($target eq 'tex') {
554: $currentstring = '\begin{document}';
555: }
556: return $currentstring;
557: }
558:
559: sub end_body {
560: my ($target,$token) = @_;
561: my $currentstring = '';
562: if ($target eq 'web') {
563: $currentstring = $token->[2];
564: } elsif ($target eq 'tex') {
565: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
566: }
567: return $currentstring;
568: }
569:
570: #-- <center> tag (end tag required)
571: sub start_center {
572: my ($target,$token) = @_;
573: my $currentstring = '';
574: if ($target eq 'web') {
575: $currentstring = $token->[4];
576: } elsif ($target eq 'tex') {
577: $currentstring = '\begin{center}';
578: }
579: return $currentstring;
580: }
581:
582: sub end_center {
583: my ($target,$token) = @_;
584: my $currentstring = '';
585: if ($target eq 'web') {
586: $currentstring = $token->[2];
587: } elsif ($target eq 'tex') {
588: $currentstring = '\end{center}';
589: }
590: return $currentstring;
591: }
592:
593: #-- <b> tag (end tag required)
594: sub start_b {
595: my ($target,$token) = @_;
596: my $currentstring = '';
597: if ($target eq 'web') {
598: $currentstring = $token->[4];
599: } elsif ($target eq 'tex') {
600: $currentstring = '\textbf{';
601: }
602: return $currentstring;
603: }
604:
605: sub end_b {
606: my ($target,$token) = @_;
607: my $currentstring = '';
608: if ($target eq 'web') {
609: $currentstring = $token->[2];
610: } elsif ($target eq 'tex') {
611: $currentstring = '}';
612: }
613: return $currentstring;
614: }
615:
616: #-- <strong> tag (end tag required)
617: sub start_strong {
618: my ($target,$token) = @_;
619: my $currentstring = '';
620: if ($target eq 'web') {
621: $currentstring = $token->[4];
622: } elsif ($target eq 'tex') {
623: $currentstring = '\textbf{';
624: }
625: return $currentstring;
626: }
627:
628: sub end_strong {
629: my ($target,$token) = @_;
630: my $currentstring = '';
631: if ($target eq 'web') {
632: $currentstring = $token->[2];
633: } elsif ($target eq 'tex') {
634: $currentstring = '}';
635: }
636: return $currentstring;
637: }
638:
639: #-- <h1> tag (end tag required)
640: sub start_h1 {
641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
642: my $currentstring = '';
643: if ($target eq 'web') {
644: $currentstring .= $token->[4];
645: } elsif ($target eq 'tex') {
646: my $pre;
647: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
648: if ($align eq 'center') {
649: $pre='\begin{center}';
650: } elsif ($align eq 'left') {
651: $pre='\rlap{';
652: } elsif ($align eq 'right') {
653: $pre=' \hfill \llap{';
654: }
655: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
656: if (not defined $TeXsize) {$TeXsize="large";}
657: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
658: } elsif ($target eq 'meta') {
659: $currentstring='<subject>';
660: &start_output($target);
661: }
662: return $currentstring;
663: }
664:
665: sub end_h1 {
666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
667: my $currentstring = '';
668: if ($target eq 'web') {
669: $currentstring .= $token->[2];
670: } elsif ($target eq 'tex') {
671: my $post='\vskip 0 mm ';
672: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
673: if ($align eq 'center') {
674: $post='\end{center}';
675: } elsif ($align eq 'left') {
676: $post='} \hfill'.'\vskip 0 mm ';
677: } elsif ($align eq 'right') {
678: $post='}'.'\vskip 0 mm ';
679: }
680: $currentstring .= '}}'.$post;
681: } elsif ($target eq 'meta') {
682: &end_output($target);
683: $currentstring='</subject>';
684: }
685: return $currentstring;
686: }
687:
688: #-- <h2> tag
689: sub start_h2 {
690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
691: my $currentstring = '';
692: if ($target eq 'web') {
693: $currentstring .= $token->[4];
694: } elsif ($target eq 'tex') {
695: my $pre;
696: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
697: if ($align eq 'center') {
698: $pre='\begin{center}';
699: } elsif ($align eq 'left') {
700: $pre='\rlap{';
701: } elsif ($align eq 'right') {
702: $pre=' \hfill \llap{';
703: }
704: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
705: if (not defined $TeXsize) {$TeXsize="large";}
706: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
707: }
708: return $currentstring;
709: }
710:
711: sub end_h2 {
712: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
713: my $currentstring = '';
714: if ($target eq 'web') {
715: $currentstring .= $token->[2];
716: } elsif ($target eq 'tex') {
717: my $post='\vskip 0 mm ';
718: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
719: if ($align eq 'center') {
720: $post='\end{center}';
721: } elsif ($align eq 'left') {
722: $post='} \hfill'.'\vskip 0 mm ';
723: } elsif ($align eq 'right') {
724: $post='}'.'\vskip 0 mm ';
725: }
726: $currentstring .= '}}'.$post;
727: }
728: return $currentstring;
729: }
730:
731: #-- <h3> tag
732: sub start_h3 {
733: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
734: my $currentstring = '';
735: if ($target eq 'web') {
736: $currentstring .= $token->[4];
737: } elsif ($target eq 'tex') {
738: my $pre;
739: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
740: if ($align eq 'center') {
741: $pre='\begin{center}';
742: } elsif ($align eq 'left') {
743: $pre='\rlap{';
744: } elsif ($align eq 'right') {
745: $pre=' \hfill \llap{';
746: }
747: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
748: if (not defined $TeXsize) {$TeXsize="large";}
749: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
750: }
751: return $currentstring;
752: }
753:
754: sub end_h3 {
755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
756: my $currentstring = '';
757: if ($target eq 'web') {
758: $currentstring .= $token->[2];
759: } elsif ($target eq 'tex') {
760: my $post='\vskip 0 mm ';
761: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
762: if ($align eq 'center') {
763: $post='\end{center}';
764: } elsif ($align eq 'left') {
765: $post='} \hfill'.'\vskip 0 mm ';
766: } elsif ($align eq 'right') {
767: $post='}'.'\vskip 0 mm ';
768: }
769: $currentstring .= '}}'.$post;
770: }
771: return $currentstring;
772: }
773:
774: #-- <h4> tag
775: sub start_h4 {
776: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
777: my $currentstring = '';
778: if ($target eq 'web') {
779: $currentstring .= $token->[4];
780: } elsif ($target eq 'tex') {
781: my $pre;
782: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
783: if ($align eq 'center') {
784: $pre='\begin{center}';
785: } elsif ($align eq 'left') {
786: $pre='\rlap{';
787: } elsif ($align eq 'right') {
788: $pre=' \hfill \llap{';
789: }
790: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
791: if (not defined $TeXsize) {$TeXsize="large";}
792: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
793: }
794: return $currentstring;
795: }
796:
797: sub end_h4 {
798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
799: my $currentstring = '';
800: if ($target eq 'web') {
801: $currentstring .= $token->[2];
802: } elsif ($target eq 'tex') {
803: my $post='\vskip 0 mm ';
804: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
805: if ($align eq 'center') {
806: $post='\end{center}';
807: } elsif ($align eq 'left') {
808: $post='} \hfill'.'\vskip 0 mm ';
809: } elsif ($align eq 'right') {
810: $post='}'.'\vskip 0 mm ';
811: }
812: $currentstring .= '}}'.$post;
813: }
814: return $currentstring;
815: }
816:
817: #-- <h5> tag
818: sub start_h5 {
819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
820: my $currentstring = '';
821: if ($target eq 'web') {
822: $currentstring .= $token->[4];
823: } elsif ($target eq 'tex') {
824: my $pre;
825: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
826: if ($align eq 'center') {
827: $pre='\begin{center}';
828: } elsif ($align eq 'left') {
829: $pre='\rlap{';
830: } elsif ($align eq 'right') {
831: $pre=' \hfill \llap{';
832: }
833: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
834: if (not defined $TeXsize) {$TeXsize="large";}
835: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
836: }
837: return $currentstring;
838: }
839:
840: sub end_h5 {
841: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
842: my $currentstring = '';
843: if ($target eq 'web') {
844: $currentstring .= $token->[2];
845: } elsif ($target eq 'tex') {
846: my $post='\vskip 0 mm ';
847: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
848: if ($align eq 'center') {
849: $post='\end{center}';
850: } elsif ($align eq 'left') {
851: $post='} \hfill'.'\vskip 0 mm ';
852: } elsif ($align eq 'right') {
853: $post='}'.'\vskip 0 mm ';
854: }
855: $currentstring .= '}}'.$post;
856: }
857: return $currentstring;
858: }
859:
860: #-- <h6> tag
861: sub start_h6 {
862: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
863: my $currentstring = '';
864: if ($target eq 'web') {
865: $currentstring .= $token->[4];
866: } elsif ($target eq 'tex') {
867: my $pre;
868: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
869: if ($align eq 'center') {
870: $pre='\begin{center}';
871: } elsif ($align eq 'left') {
872: $pre='\rlap{';
873: } elsif ($align eq 'right') {
874: $pre=' \hfill \llap{';
875: }
876: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
877: if (not defined $TeXsize) {$TeXsize="large";}
878: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
879: }
880: return $currentstring;
881: }
882:
883: sub end_h6 {
884: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
885: my $currentstring = '';
886: if ($target eq 'web') {
887: $currentstring .= $token->[2];
888: } elsif ($target eq 'tex') {
889: my $post='\vskip 0 mm ';
890: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
891: if ($align eq 'center') {
892: $post='\end{center}';
893: } elsif ($align eq 'left') {
894: $post='} \hfill'.'\vskip 0 mm ';
895: } elsif ($align eq 'right') {
896: $post='}'.'\vskip 0 mm ';
897: }
898: $currentstring .= '}}'.$post;
899: }
900: return $currentstring;
901: }
902:
903: #--- <cite> tag (end tag required)
904: sub start_cite {
905: my ($target,$token) = @_;
906: my $currentstring = '';
907: if ($target eq 'web') {
908: $currentstring .= $token->[4];
909: } elsif ($target eq 'tex') {
910: $currentstring .= '\textit{';
911: }
912: return $currentstring;
913: }
914:
915: sub end_cite {
916: my ($target,$token) = @_;
917: my $currentstring = '';
918: if ($target eq 'web') {
919: $currentstring .= $token->[2];
920: } elsif ($target eq 'tex') {
921: $currentstring .= '}';
922: }
923: return $currentstring;
924: }
925:
926: #-- <i> tag (end tag required)
927: sub start_i {
928: my ($target,$token) = @_;
929: my $currentstring = '';
930: if ($target eq 'web') {
931: $currentstring .= $token->[4];
932: } elsif ($target eq 'tex') {
933: $currentstring .= '\textit{';
934: }
935: return $currentstring;
936: }
937:
938: sub end_i {
939: my ($target,$token) = @_;
940: my $currentstring = '';
941: if ($target eq 'web') {
942: $currentstring .= $token->[2];
943: } elsif ($target eq 'tex') {
944: $currentstring .= '}';
945: }
946: return $currentstring;
947: }
948:
949: #-- <address> tag (end tag required)
950: sub start_address {
951: my ($target,$token) = @_;
952: my $currentstring = '';
953: if ($target eq 'web') {
954: $currentstring .= $token->[4];
955: } elsif ($target eq 'tex') {
956: $currentstring .= '\textit{';
957: }
958: return $currentstring;
959: }
960:
961: sub end_address {
962: my ($target,$token) = @_;
963: my $currentstring = '';
964: if ($target eq 'web') {
965: $currentstring .= $token->[2];
966: } elsif ($target eq 'tex') {
967: $currentstring .= '}';
968: }
969: return $currentstring;
970: }
971:
972: #-- <dfn> tag (end tag required)
973: sub start_dfn {
974: my ($target,$token) = @_;
975: my $currentstring = '';
976: if ($target eq 'web') {
977: $currentstring .= $token->[4];
978: } elsif ($target eq 'tex') {
979: $currentstring .= '\textit{';
980: }
981: return $currentstring;
982: }
983:
984: sub end_dfn {
985: my ($target,$token) = @_;
986: my $currentstring = '';
987: if ($target eq 'web') {
988: $currentstring .= $token->[2];
989: } elsif ($target eq 'tex') {
990: $currentstring .= '}';
991: }
992: return $currentstring;
993: }
994:
995: #-- <tt> tag (end tag required)
996: sub start_tt {
997: my ($target,$token) = @_;
998: my $currentstring = '';
999: if ($target eq 'web') {
1000: $currentstring .= $token->[4];
1001: } elsif ($target eq 'tex') {
1002: $currentstring .= '\texttt{';
1003: }
1004: return $currentstring;
1005: }
1006:
1007: sub end_tt {
1008: my ($target,$token) = @_;
1009: my $currentstring = '';
1010: if ($target eq 'web') {
1011: $currentstring .= $token->[2];
1012: } elsif ($target eq 'tex') {
1013: $currentstring .= '}';
1014: }
1015: return $currentstring;
1016: }
1017:
1018: #-- <kbd> tag (end tag required)
1019: sub start_kbd {
1020: my ($target,$token) = @_;
1021: my $currentstring = '';
1022: if ($target eq 'web') {
1023: $currentstring .= $token->[4];
1024: } elsif ($target eq 'tex') {
1025: $currentstring .= '\texttt{';
1026: }
1027: return $currentstring;
1028: }
1029:
1030: sub end_kbd {
1031: my ($target,$token) = @_;
1032: my $currentstring = '';
1033: if ($target eq 'web') {
1034: $currentstring .= $token->[2];
1035: } elsif ($target eq 'tex') {
1036: $currentstring .= '}';
1037: }
1038: return $currentstring;
1039: }
1040:
1041: #-- <code> tag (end tag required)
1042: sub start_code {
1043: my ($target,$token) = @_;
1044: my $currentstring = '';
1045: if ($target eq 'web') {
1046: $currentstring .= $token->[4];
1047: } elsif ($target eq 'tex') {
1048: $currentstring .= '\texttt{';
1049: }
1050: return $currentstring;
1051: }
1052:
1053: sub end_code {
1054: my ($target,$token) = @_;
1055: my $currentstring = '';
1056: if ($target eq 'web') {
1057: $currentstring .= $token->[2];
1058: } elsif ($target eq 'tex') {
1059: $currentstring .= '}';
1060: }
1061: return $currentstring;
1062: }
1063:
1064: #-- <em> tag (end tag required)
1065: sub start_em {
1066: my ($target,$token) = @_;
1067: my $currentstring = '';
1068: if ($target eq 'web') {
1069: $currentstring .= $token->[4];
1070: } elsif ($target eq 'tex') {
1071: $currentstring .= '\emph{';
1072: }
1073: return $currentstring;
1074: }
1075:
1076: sub end_em {
1077: my ($target,$token) = @_;
1078: my $currentstring = '';
1079: if ($target eq 'web') {
1080: $currentstring .= $token->[2];
1081: } elsif ($target eq 'tex') {
1082: $currentstring .= '}';
1083: }
1084: return $currentstring;
1085: }
1086:
1087: #-- <q> tag (end tag required)
1088: sub start_q {
1089: my ($target,$token) = @_;
1090: my $currentstring = '';
1091: if ($target eq 'web') {
1092: $currentstring .= $token->[4];
1093: } elsif ($target eq 'tex') {
1094: $currentstring .= '\emph{';
1095: }
1096: return $currentstring;
1097: }
1098:
1099: sub end_q {
1100: my ($target,$token) = @_;
1101: my $currentstring = '';
1102: if ($target eq 'web') {
1103: $currentstring .= $token->[2];
1104: } elsif ($target eq 'tex') {
1105: $currentstring .= '}';
1106: }
1107: return $currentstring;
1108: }
1109:
1110: #-- <p> tag (end tag optional)
1111: #optional attribute - align="center|left|right"
1112: sub start_p {
1113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1114: my $currentstring = '';
1115: if ($target eq 'web') {
1116: $currentstring .= $token->[4];
1117: } elsif ($target eq 'tex') {
1118: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1119: if ($align eq 'center') {
1120: $currentstring='\begin{center}\par';
1121: } elsif ($align eq 'right') {
1122: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1123: } elsif ($align eq 'left') {
1124: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1125: } else {
1126: $currentstring='\par ';
1127: }
1128: my $signal=1;#<p> does not work inside <b>...</b>
1129: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1130: if (!$signal) {$currentstring = '';}
1131: }
1132: }
1133: return $currentstring;
1134: }
1135:
1136: sub end_p {
1137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1138: my $currentstring = '';
1139: if ($target eq 'web') {
1140: $currentstring .= $token->[2];
1141: } elsif ($target eq 'tex') {
1142: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1143: if (not defined $align) {
1144: $currentstring.='\strut\\\\\strut ';
1145: } elsif ($align eq 'center') {
1146: $currentstring .= '\end{center}';
1147: } elsif ($align eq 'right') {
1148: $currentstring .= '}}';
1149: } elsif ($align eq 'left') {
1150: $currentstring .= '}\hfill}';
1151: }
1152: }
1153: return $currentstring;
1154: }
1155:
1156: #-- <br> tag (end tag forbidden)
1157: sub start_br {
1158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1159: my $currentstring = '';
1160: if ($target eq 'web') {
1161: $currentstring .= $token->[4];
1162: } elsif ($target eq 'tex') {
1163: my @tempo=@$tagstack;
1164: my $signal=0;
1165: for (my $i=$#tempo;$i>=0;$i--) {
1166: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1167: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1168: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1169: $signal=1;
1170: last;
1171: }
1172: }
1173: if ($signal) {
1174: $currentstring .= ' \vskip 0 mm ';
1175: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1176: $currentstring .= '\strut \\\\ \strut ';
1177: }
1178: }
1179: return $currentstring;
1180: }
1181:
1182: sub end_br {
1183: my ($target,$token) = @_;
1184: my $currentstring = '';
1185: if ($target eq 'web') {
1186: $currentstring .= $token->[2];
1187: }
1188: return $currentstring;
1189: }
1190:
1191: #-- <big> tag (end tag required)
1192: sub start_big {
1193: my ($target,$token) = @_;
1194: my $currentstring = '';
1195: if ($target eq 'web') {
1196: $currentstring .= $token->[4];
1197: } elsif ($target eq 'tex') {
1198: $currentstring .= '{\large ';
1199: }
1200: return $currentstring;
1201: }
1202:
1203: sub end_big {
1204: my ($target,$token) = @_;
1205: my $currentstring = '';
1206: if ($target eq 'web') {
1207: $currentstring .= $token->[2];
1208: } elsif ($target eq 'tex') {
1209: $currentstring .= '}';
1210: }
1211: return $currentstring;
1212: }
1213:
1214: #-- <small> tag (end tag required)
1215: sub start_small {
1216: my ($target,$token) = @_;
1217: my $currentstring = '';
1218: if ($target eq 'web') {
1219: $currentstring .= $token->[4];
1220: } elsif ($target eq 'tex') {
1221: $currentstring .= '{\footnotesize ';
1222: }
1223: return $currentstring;
1224: }
1225:
1226: sub end_small {
1227: my ($target,$token) = @_;
1228: my $currentstring = '';
1229: if ($target eq 'web') {
1230: $currentstring .= $token->[2];
1231: } elsif ($target eq 'tex') {
1232: $currentstring .= '}';
1233: }
1234: return $currentstring;
1235: }
1236:
1237: #-- <basefont> tag (end tag forbidden)
1238: sub start_basefont {
1239: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1240: my $currentstring = '';
1241: if ($target eq 'web') {
1242: $currentstring = $token->[4];
1243: } elsif ($target eq 'tex') {
1244: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1245: if (defined $basesize) {
1246: $currentstring = '{\\'.$basesize.' ';
1247: }
1248: }
1249: return $currentstring;
1250: }
1251:
1252: sub end_basefont {
1253: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1254: my $currentstring = '';
1255: if ($target eq 'web') {
1256: $currentstring = $token->[4];
1257: } elsif ($target eq 'tex') {
1258: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1259: if (defined $basesize) {
1260: $currentstring = '}';
1261: }
1262: }
1263: return $currentstring;
1264: }
1265:
1266: #-- <font> tag (end tag required)
1267: sub start_font {
1268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1269: my $currentstring = '';
1270: if ($target eq 'web') {
1271: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1272: if ($face!~/symbol/i) {
1273: if (($ENV{'browser.fontenhance'} eq 'on') ||
1274: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1275: }
1276: $currentstring = $token->[4];
1277: } elsif ($target eq 'tex') {
1278: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1279: if (defined $fontsize) {
1280: $currentstring = '{\\'.$fontsize.' ';
1281: }
1282: }
1283: return $currentstring;
1284: }
1285:
1286: sub end_font {
1287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1288: my $currentstring = '';
1289: if ($target eq 'web') {
1290: $currentstring = $token->[2];
1291: } elsif ($target eq 'tex') {
1292: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1293: if (defined $fontsize) {
1294: $currentstring = '}';
1295: }
1296: }
1297: return $currentstring;
1298: }
1299:
1300: #-- <strike> tag (end tag required)
1301: sub start_strike {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web') {
1305: $currentstring .= $token->[4];
1306: } elsif ($target eq 'tex') {
1307: &Apache::lonxml::startredirection();
1308: }
1309: return $currentstring;
1310: }
1311:
1312: sub end_strike {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web') {
1316: $currentstring .= $token->[2];
1317: } elsif ($target eq 'tex') {
1318: $currentstring=&Apache::lonxml::endredirection();
1319: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1320: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1321: $currentstring=~s/(\S)\s*$/$1\}/;
1322: }
1323: return $currentstring;
1324: }
1325:
1326: #-- <s> tag (end tag required)
1327: sub start_s {
1328: my ($target,$token) = @_;
1329: my $currentstring = '';
1330: if ($target eq 'web') {
1331: $currentstring .= $token->[4];
1332: } elsif ($target eq 'tex') {
1333: &Apache::lonxml::startredirection();
1334: }
1335: return $currentstring;
1336: }
1337:
1338: sub end_s {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web') {
1342: $currentstring .= $token->[2];
1343: } elsif ($target eq 'tex') {
1344: $currentstring=&Apache::lonxml::endredirection();
1345: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1346: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1347: $currentstring=~s/(\S)\s*$/$1\}/;
1348: }
1349: return $currentstring;
1350: }
1351:
1352: #-- <sub> tag (end tag required)
1353: sub start_sub {
1354: my ($target,$token) = @_;
1355: my $currentstring = '';
1356: if ($target eq 'web') {
1357: $currentstring .= $token->[4];
1358: } elsif ($target eq 'tex') {
1359: $currentstring .= '\ensuremath{_{';
1360: }
1361: return $currentstring;
1362: }
1363:
1364: sub end_sub {
1365: my ($target,$token) = @_;
1366: my $currentstring = '';
1367: if ($target eq 'web') {
1368: $currentstring .= $token->[2];
1369: } elsif ($target eq 'tex') {
1370: $currentstring .= '}}';
1371: }
1372: return $currentstring;
1373: }
1374:
1375: #-- <sup> tag (end tag required)
1376: sub start_sup {
1377: my ($target,$token) = @_;
1378: my $currentstring = '';
1379: if ($target eq 'web') {
1380: $currentstring .= $token->[4];
1381: } elsif ($target eq 'tex') {
1382: $currentstring .= '\ensuremath{^{';
1383: }
1384: return $currentstring;
1385: }
1386:
1387: sub end_sup {
1388: my ($target,$token) = @_;
1389: my $currentstring = '';
1390: if ($target eq 'web') {
1391: $currentstring .= $token->[2];
1392: } elsif ($target eq 'tex') {
1393: $currentstring .= '}}';
1394: }
1395: return $currentstring;
1396: }
1397:
1398: #-- <hr> tag (end tag forbidden)
1399: sub start_hr {
1400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1401: my $currentstring = '';
1402: if ($target eq 'web') {
1403: $currentstring .= $token->[4];
1404: } elsif ($target eq 'tex') {
1405: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1406: if (defined $LaTeXwidth) {
1407: if ($LaTeXwidth=~/^%/) {
1408: substr($LaTeXwidth,0,1)='';
1409: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1410: }
1411: } else {
1412: $LaTeXwidth ='0.9\textwidth';
1413: }
1414: my ($pre,$post);
1415: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1416: if (($align eq 'center') || (not defined $align)) {
1417: $pre=''; $post='';
1418: } elsif ($align eq 'left') {
1419: $pre='\rlap{'; $post='} \hfill';
1420: } elsif ($align eq 'right') {
1421: $pre=' \hfill \llap{'; $post='}';
1422: }
1423: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1424: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1425: }
1426: return $currentstring;
1427: }
1428:
1429: sub end_hr {
1430: my ($target,$token) = @_;
1431: my $currentstring = '';
1432: if ($target eq 'web') {
1433: $currentstring .= $token->[2];
1434: }
1435: return $currentstring;
1436: }
1437:
1438: #-- <div> tag (end tag required)
1439: sub start_div {
1440: my ($target,$token) = @_;
1441: my $currentstring = '';
1442: if ($target eq 'web') {
1443: $currentstring .= $token->[4];
1444: }
1445: return $currentstring;
1446: }
1447:
1448: sub end_div {
1449: my ($target,$token) = @_;
1450: my $currentstring = '';
1451: if ($target eq 'web') {
1452: $currentstring .= $token->[2];
1453: }
1454: return $currentstring;
1455: }
1456:
1457: #-- <a> tag (end tag required)
1458: sub start_a {
1459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1460: my $currentstring = '';
1461: if ($target eq 'web') {
1462: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1463: undef,1);
1464: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1465: } elsif ($target eq 'tex') {
1466: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1467: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1468: if ($a=~/\S/) {
1469: $a=~s/([^\\])%/$1\\\%/g;
1470: $currentstring .= '\ref{URI: '.$a.'}';
1471: } elsif ($b=~/\S/) {
1472: $currentstring .= '\ref{Anchor: '.$b.'}';
1473: } else {
1474: $currentstring.='';
1475: }
1476: }
1477: return $currentstring;
1478: }
1479:
1480: sub end_a {
1481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1482: my $currentstring = '';
1483: if ($target eq 'web') {
1484: $currentstring .= $token->[2];
1485: }
1486: return $currentstring;
1487: }
1488:
1489: #-- <li> tag (end tag optional)
1490: sub start_li {
1491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1492: my $currentstring = '';
1493: if ($target eq 'web') {
1494: $currentstring = $token->[4];
1495: } elsif ($target eq 'tex') {
1496: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1497: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1498: #FIXME need to support types i and I
1499: if ($type=~/disc/) {
1500: $currentstring .= ' \item[$\bullet$] ';
1501: } elsif ($type=~/circle/) {
1502: $currentstring .= ' \item[$\circ$] ';
1503: } elsif ($type=~/square/) {
1504: $currentstring .= ' \item[$\diamond$] ';
1505: } elsif ($type eq '1') {
1506: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1507: } elsif ($type eq 'A') {
1508: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1509: } elsif ($type eq 'a') {
1510: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1511: } elsif ($value ne '') {
1512: $currentstring .= ' \item['.$value.'] ';
1513: } else {
1514: $currentstring .= ' \item ';
1515: }
1516: $Apache::londefdef::list_index++;
1517: }
1518: return $currentstring;
1519: }
1520:
1521: sub end_li {
1522: my ($target,$token) = @_;
1523: my $currentstring = '';
1524: if ($target eq 'web') {
1525: $currentstring = $token->[2];
1526: }
1527: return $currentstring;
1528: }
1529:
1530: #-- <u> tag (end tag required)
1531: sub start_u {
1532: my ($target,$token) = @_;
1533: my $currentstring = '';
1534: if ($target eq 'web') {
1535: $currentstring .= $token->[4];
1536: } elsif ($target eq 'tex') {
1537: &Apache::lonxml::startredirection();
1538: }
1539: return $currentstring;
1540: }
1541:
1542: sub end_u {
1543: my ($target,$token) = @_;
1544: my $currentstring = '';
1545: if ($target eq 'web') {
1546: $currentstring .= $token->[2];
1547: } elsif ($target eq 'tex') {
1548: $currentstring=&Apache::lonxml::endredirection();
1549: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1550: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1551: $currentstring=~s/(\S)\s*$/$1\}/;
1552: }
1553: return $currentstring;
1554: }
1555:
1556: #-- <ul> tag (end tag required)
1557: sub start_ul {
1558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1559: my $currentstring = '';
1560: if ($target eq 'web') {
1561: $currentstring = $token->[4];
1562: } elsif ($target eq 'tex') {
1563: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1564: $Apache::londefdef::list_index=0;
1565: if ($TeXtype eq 'disc') {
1566: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1567: '\renewcommand{\labelitemii}{$\bullet$}'.
1568: '\renewcommand{\labelitemiii}{$\bullet$}'.
1569: '\renewcommand{\labelitemiv}{$\bullet$}';
1570: } elsif ($TeXtype eq 'circle') {
1571: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1572: '\renewcommand{\labelitemii}{$\circ$}'.
1573: '\renewcommand{\labelitemiii}{$\circ$}'.
1574: '\renewcommand{\labelitemiv}{$\circ$}';
1575: } elsif ($TeXtype eq 'square') {
1576: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1577: '\renewcommand{\labelitemii}{$\diamond$}'.
1578: '\renewcommand{\labelitemiii}{$\diamond$}'.
1579: '\renewcommand{\labelitemiv}{$\diamond$}';
1580: }
1581: $currentstring .= '\strut \begin{itemize}';
1582: }
1583: return $currentstring;
1584: }
1585:
1586: sub end_ul {
1587: my ($target,$token) = @_;
1588: my $currentstring = '';
1589: if ($target eq 'web') {
1590: $currentstring = $token->[2];
1591: } elsif ($target eq 'tex') {
1592: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1593: '\renewcommand{\labelitemii}{$\bullet$}'.
1594: '\renewcommand{\labelitemiii}{$\bullet$}'.
1595: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1596: }
1597: return $currentstring;
1598: }
1599:
1600: #-- <menu> tag (end tag required)
1601: sub start_menu {
1602: my ($target,$token) = @_;
1603: my $currentstring = '';
1604: if ($target eq 'web') {
1605: $currentstring = $token->[4];
1606: } elsif ($target eq 'tex') {
1607: $currentstring = " \\begin{itemize} ";
1608: }
1609: return $currentstring;
1610: }
1611:
1612: sub end_menu {
1613: my ($target,$token) = @_;
1614: my $currentstring = '';
1615: if ($target eq 'web') {
1616: $currentstring = $token->[2];
1617: } elsif ($target eq 'tex') {
1618: $currentstring = " \\end{itemize}";
1619: }
1620: return $currentstring;
1621: }
1622:
1623: #-- <dir> tag (end tag required)
1624: sub start_dir {
1625: my ($target,$token) = @_;
1626: my $currentstring = '';
1627: if ($target eq 'web') {
1628: $currentstring = $token->[4];
1629: } elsif ($target eq 'tex') {
1630: $currentstring = " \\begin{itemize} ";
1631: }
1632: return $currentstring;
1633: }
1634:
1635: sub end_dir {
1636: my ($target,$token) = @_;
1637: my $currentstring = '';
1638: if ($target eq 'web') {
1639: $currentstring = $token->[2];
1640: } elsif ($target eq 'tex') {
1641: $currentstring = " \\end{itemize}";
1642: }
1643: return $currentstring;
1644: }
1645:
1646: #-- <ol> tag (end tag required)
1647: sub start_ol {
1648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1649: my $currentstring = '';
1650: if ($target eq 'web') {
1651: $currentstring = $token->[4];
1652: } elsif ($target eq 'tex') {
1653: $Apache::londefdef::list_index=0;
1654: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1655: if ($type eq '1') {
1656: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1657: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1658: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1659: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1660: } elsif ($type eq 'A') {
1661: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1662: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1663: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1664: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1665: } elsif ($type eq 'a') {
1666: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1667: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1668: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1669: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1670: } elsif ($type eq 'i') {
1671: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1672: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1673: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1674: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1675: } elsif ($type eq 'I') {
1676: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1677: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1678: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1679: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1680: }
1681: $currentstring .= '\strut \begin{enumerate}';
1682: }
1683: return $currentstring;
1684: }
1685:
1686: sub end_ol {
1687: my ($target,$token) = @_;
1688: my $currentstring = '';
1689: if ($target eq 'web') {
1690: $currentstring = $token->[2];
1691: } elsif ($target eq 'tex') {
1692: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1693: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1694: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1695: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1696: }
1697: return $currentstring;
1698: }
1699:
1700: #-- <dl> tag (end tag required)
1701: sub start_dl {
1702: my ($target,$token) = @_;
1703: my $currentstring = '';
1704: if ($target eq 'web') {
1705: $currentstring = $token->[4];
1706: } elsif ($target eq 'tex') {
1707: $currentstring = '\begin{description}';
1708: $Apache::londefdef::DL++;
1709: push(@Apache::londefdef::description,[]);
1710: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1711: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1712: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1713: }
1714: return $currentstring;
1715: }
1716:
1717: sub end_dl {
1718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web') {
1721: $currentstring = $token->[2];
1722: } elsif ($target eq 'tex') {
1723: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1724: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1725: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1726: $currentstring.=' '.$element.' ';
1727: }
1728: pop(@Apache::londefdef::description);
1729: $currentstring.='\end{description}';
1730: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1731: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1732: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1733: $Apache::londefdef::DL--;
1734: }
1735: return $currentstring;
1736: }
1737:
1738: #-- <dt> tag (end tag optional)
1739: sub start_dt {
1740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1741: my $currentstring='';
1742: if ($target eq 'web') {
1743: $currentstring = $token->[4];
1744: } elsif ($target eq 'tex') {
1745: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1746: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1747: &Apache::lonxml::startredirection();
1748: $Apache::londefdef::DT[-1]++;
1749: $Apache::londefdef::seenDT[-1]=1;
1750: }
1751: return $currentstring;
1752: }
1753:
1754: sub end_dt {
1755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1756: my $currentstring = '';
1757: if ($target eq 'web') {
1758: $currentstring = $token->[2];
1759: } elsif ($target eq 'tex') {
1760: if ($Apache::londefdef::DT[-1]) {
1761: my $data=&item_cleanup();
1762: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1763: $Apache::londefdef::DT[-1]--;
1764: }
1765: }
1766: return $currentstring;
1767: }
1768:
1769: sub item_cleanup {
1770: my $item=&Apache::lonxml::endredirection();
1771: $item=~s/\\begin{center}//g;
1772: $item=~s/\\end{center}//g;
1773: return $item;
1774: }
1775:
1776: #-- <dd> tag (end tag optional)
1777: sub start_dd {
1778: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1779: my $currentstring = '';
1780: if ($target eq 'web') {
1781: $currentstring = $token->[4];
1782: } elsif ($target eq 'tex') {
1783: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1784: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1785: if (!$Apache::londefdef::seenDT[-1]) {
1786: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1787: }
1788: push(@{$Apache::londefdef::description[-1]},'');
1789: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1790: $Apache::londefdef::DD[-1]++;
1791: &Apache::lonxml::startredirection();
1792: }
1793: return $currentstring;
1794: }
1795:
1796: sub end_dd {
1797: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1798: my $currentstring = '';
1799: if ($target eq 'web') {
1800: $currentstring = $token->[2];
1801: } elsif ($target eq 'tex') {
1802: $Apache::londefdef::description[-1]->[-1].=
1803: &Apache::lonxml::endredirection().' \vskip 0mm ';
1804: $Apache::londefdef::DD[-1]--;
1805: }
1806: return $currentstring;
1807: }
1808:
1809: #-- <table> tag (end tag required)
1810: #list of supported attributes: border,width,TeXwidth
1811: sub start_table {
1812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1813: my ($textwidth,$currentstring)=('','');
1814: if ($target eq 'web') {
1815: $currentstring = $token->[4];
1816: } elsif ($target eq 'tex') {
1817: my $aa = {};
1818: push @Apache::londefdef::table, $aa;
1819: $Apache::londefdef::table[-1]{'row_number'} = -1;
1820: #maximum table's width (default coincides with text line length)
1821: if ($#Apache::londefdef::table==0) {
1822: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1823: $textwidth=~/(\d+\.?\d*)/;
1824: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1825: } else {
1826: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1827: #the maximum width of nested table is determined by LATeX width of parent cell
1828: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1829: } else {
1830: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1831: $textwidth=$Apache::londefdef::table[-2]{'width'};
1832: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1833: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1834: }
1835: }
1836: }
1837: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1838: if (not defined $TeXwidth) {
1839: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1840: if ($htmlwidth=~/%/) {
1841: $Apache::londefdef::table[-1]{'percent'}=1;
1842: $htmlwidth=~/(\d+)/;
1843: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1844: } else {
1845: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1846: }
1847: } elsif ($TeXwidth=~/%/) {
1848: $Apache::londefdef::table[-1]{'percent'}=1;
1849: $TeXwidth=~/(\d+)/;
1850: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1851: } else {
1852: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1853: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1854: }
1855: #table's border
1856: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1857: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1858: unless (defined $border) { $border = 0; }
1859: if ($border) {
1860: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1861: $Apache::londefdef::table[-1]{'vinc'} = '&';
1862: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1863: } else {
1864: $Apache::londefdef::table[-1]{'hinc'} = '';
1865: $Apache::londefdef::table[-1]{'vinc'} = '&';
1866: $Apache::londefdef::table[-1]{'vvinc'} = '';
1867: }
1868: if ($#Apache::londefdef::table==0) {
1869: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1870: }
1871: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1872: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1873: $Apache::londefdef::table[-1]{'objectlen'}=[];
1874: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1875: $Apache::londefdef::table[-1]{'maxlen'}=[];
1876: $Apache::londefdef::table[-1]{'minlen'}=[];
1877: $Apache::londefdef::table[-1]{'content'}=[];
1878: $Apache::londefdef::table[-1]{'align'}=[];
1879: $currentstring='\keephidden{NEW TABLE ENTRY}';
1880: }
1881: return $currentstring;
1882: }
1883:
1884: sub end_table {
1885: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1886: my $currentstring = '';
1887: if ($target eq 'web') {
1888: $currentstring = $token->[2];
1889: } elsif ($target eq 'tex') {
1890: my $inmemory = '';
1891: my $output = '';
1892: my $WARNING='';
1893: #width of columns from TeXwidth attributes
1894: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1895: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1896: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1897: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1898: }
1899: }
1900: }
1901: #free space and number of empty columns
1902: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1903: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1904: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1905: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1906: $empty_columns++;
1907: } else {
1908: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1909: }
1910: }
1911: #boundaries for contents columns
1912: my @min_len=();#columns can not be narrower
1913: my @max_len=();#maximum length of column
1914: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1915: my ($localmin,$localmax)=(0,0);
1916: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1917: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1918: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1919: }
1920: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1921: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1922: }
1923: }
1924: push @min_len, $localmin;
1925: push @max_len, $localmax;
1926: }
1927: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1928: my $localmin=0,;
1929: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1930: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1931: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1932: }
1933: }
1934: if ($max_len[$jn]<$localmin) {
1935: $max_len[$jn]=$localmin;
1936: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1937: }#object size is bigger
1938: if ($min_len[$jn]<$localmin) {
1939: $min_len[$jn]=$localmin;
1940: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1941: }#object size is bigger
1942: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1943: $min_len[$jn]=0;
1944: $max_len[$jn]=0;
1945: }
1946: }
1947: #final adjustment of column width
1948: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1949: my @adjust=();
1950: #step 1. adjustment by maximum value
1951: my $space_neeeded=0;
1952: for (my $jn=0;$jn<=$#max_len;$jn++) {
1953: $space_neeeded=$space_neeeded+$max_len[$jn];
1954: }
1955: if ($space_neeeded<=$available_space) {
1956: for (my $jn=0;$jn<=$#max_len;$jn++) {
1957: if ($fwidth[$jn]==0) {
1958: $fwidth[$jn]=$max_len[$jn];
1959: }
1960: }
1961: } else {
1962: #step 2. adjustment by minimum value (estimation)
1963: $space_neeeded=0;
1964: for (my $jn=0;$jn<=$#min_len;$jn++) {
1965: $space_neeeded+=$min_len[$jn];
1966: }
1967: if ($space_neeeded>$available_space) {
1968: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1969: for (my $jn=0;$jn<=$#max_len;$jn++) {
1970: if ($fwidth[$jn]==0) {
1971: $fwidth[$jn]=$min_len[$jn];
1972: }
1973: }
1974: #check if we have objects which can be scaled
1975: my $how_many_to_scale=0;
1976: my @to_scale=();
1977: for (my $jn=0;$jn<=$#max_len;$jn++) {
1978: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1979: $how_many_to_scale++;
1980: push @to_scale, $jn;
1981: }
1982: }
1983: if ($how_many_to_scale>0) {
1984: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1985: foreach my $jn (@to_scale) {
1986: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1987: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1988: if ($1 ne '') {
1989: my $current_length=&recalc($1);
1990: $current_length=~/(\d+\.?\d*)/;
1991: $current_length=$current_length-$space_to_adjust;
1992: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1993: }
1994: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1995: if ($1 ne '') {
1996: my $current_length=$1;
1997: $current_length=$current_length-$space_to_adjust;
1998: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
1999: }
2000: }
2001: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2002: }
2003: }
2004: } else {
2005: #step 3. adjustment over minimal + corrections
2006: my $enlarge_coef=$available_space/$space_neeeded;
2007: my $acsessive=0;
2008: for (my $jn=0;$jn<=$#min_len;$jn++) {
2009: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2010: if ($adjust[$jn]>$max_len[$jn]) {
2011: $fwidth[$jn]=$max_len[$jn];
2012: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2013: $adjust[$jn]=0;
2014: }
2015: }
2016: if ($acsessive>0) {
2017: #we have an excess of space and can redistribute it
2018: my $notempty_columns=0;
2019: for (my $jn=0;$jn<=$#min_len;$jn++) {
2020: if ($adjust[$jn]!=0) {
2021: $notempty_columns++;
2022: }
2023: }
2024: my $per_column=$acsessive/$notempty_columns;
2025: for (my $jn=0;$jn<=$#min_len;$jn++) {
2026: if ($adjust[$jn]!=0) {
2027: $adjust[$jn]+=$per_column;
2028: $fwidth[$jn]=$adjust[$jn];
2029: }
2030: }
2031: } else {
2032: for (my $jn=0;$jn<=$#min_len;$jn++) {
2033: $fwidth[$jn]=$adjust[$jn];
2034: }
2035: }
2036: }
2037: }
2038: #use all available width if it is defined in % or as TeXwidth
2039: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2040: my $current=0;
2041: for (my $i=0;$i<=$#fwidth;$i++) {
2042: $current+=$fwidth[$i];
2043: }
2044: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2045: for (my $i=0;$i<=$#fwidth;$i++) {
2046: $fwidth[$i]*=$coef;
2047: }
2048: }
2049: #removing of empty columns if allowed
2050: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2051: if ($permission eq 'yes') {
2052: my @cleaned_table=();
2053: my @cleaned_header=();
2054: my $colind=0;
2055: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2056: if ($fwidth[$jn]!=0) {
2057: #we need to copy column
2058: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2059: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2060: $cleaned_header[$colind]=$fwidth[$jn];
2061: }
2062: $colind++;
2063: }
2064: }
2065: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2066: @fwidth=@cleaned_header;
2067: }
2068: #construct header of the table
2069: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2070: for (my $in=0;$in<=$#fwidth;$in++) {
2071: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2072: }
2073: $header_of_table .= '}';
2074: #fill the table
2075: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2076: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2077: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2078: $output.='\vspace*{-6 mm}\begin{center}';
2079: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2080: $output.=' \hfill \llap{'
2081: }
2082: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2083: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2084: $output.='\end{center}\vspace*{-6 mm}';
2085: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2086: $output.='} ';
2087: }
2088: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2089: }
2090: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2091: }
2092: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2093: if ($#Apache::londefdef::table > 0) {
2094: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2095: pop @Apache::londefdef::table;
2096: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2097: } else {
2098: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2099: pop @Apache::londefdef::table;
2100: undef @Apache::londefdef::table;
2101: }
2102: }
2103: return $currentstring;
2104: }
2105:
2106: #-- <tr> tag (end tag optional)
2107: sub start_tr {
2108: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2109: my $currentstring = '';
2110: if ($target eq 'web') {
2111: $currentstring = $token->[4];
2112: } elsif ($target eq 'tex') {
2113: $Apache::londefdef::table[-1]{'row_number'}++;
2114: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2115: if ($alignchar ne '') {
2116: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2117: } else {
2118: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2119: }
2120: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2121: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2122: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2123: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2124: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2125: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2126: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2127: }
2128: return $currentstring;
2129: }
2130:
2131: sub end_tr {
2132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2133: my $currentstring = '';
2134: if ($target eq 'web') {
2135: $currentstring = $token->[2];
2136: } elsif ($target eq 'tex') {
2137: if ($Apache::londefdef::TD_redirection) {
2138: &end_td_tex($parstack,$parser,$safeeval);
2139: }
2140: }
2141: return $currentstring;
2142: }
2143:
2144: #-- <td> tag (end tag optional)
2145: sub start_td {
2146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2147: my $currentstring = '';
2148: if ($target eq 'web') {
2149: $currentstring = $token->[4];
2150: } elsif ($target eq 'tex') {
2151: $Apache::londefdef::TD_redirection = 1;
2152: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2153: }
2154: return $currentstring;
2155: }
2156:
2157: sub tag_check {
2158: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2159: my @ar=@$parstack;
2160: for (my $i=$#ar-1;$i>=0;$i--) {
2161: if (lc($$tagstack[$i]) eq $good_tag) {
2162: &start_td_tex($parstack,$parser,$safeeval);
2163: last;
2164: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2165: splice @ar, $i+1;
2166: &end_td_tex(\@ar,$parser,$safeeval);
2167: &start_td_tex($parstack,$parser,$safeeval);
2168: last;
2169: }
2170: }
2171: return '';
2172: }
2173:
2174: sub start_td_tex {
2175: my ($parstack,$parser,$safeeval) = @_;
2176: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2177: if ($alignchar eq '') {
2178: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2179: }
2180: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2181: $Apache::londefdef::table[-1]{'counter_columns'}++;
2182: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2183: if (defined $TeXwidth) {
2184: my $current_length=&recalc($TeXwidth);
2185: $current_length=~/(\d+\.?\d*)/;
2186: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2187: }
2188: &Apache::lonxml::startredirection();
2189: return '';
2190: }
2191:
2192: sub end_td_tex {
2193: my ($parstack,$parser,$safeeval) = @_;
2194: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2195: my $data=&Apache::lonxml::endredirection();
2196: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2197: if (defined $TeXwidth) {
2198: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2199: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2200: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2201: } else {
2202: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2203: my $garbage_data=$data;
2204: my $fwidth=0;
2205: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2206: my $current_length=&recalc($1);
2207: $current_length=~/(\d+\.?\d*)/;
2208: if ($fwidth<$1) {$fwidth=$1;}
2209: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2210: }
2211: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2212: my $current_length=$1;
2213: if ($fwidth<$current_length) {$fwidth=$current_length;}
2214: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2215: }
2216: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2217: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2218: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2219: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2220: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2221: my $garbage_data=$data;
2222: my $fwidth=0;
2223: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2224: my $current_length=&recalc($1);
2225: $current_length=~/(\d+\.?\d*)/;
2226: if ($fwidth<$1) {$fwidth=$1;}
2227: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2228: }
2229: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2230: my $current_length=&recalc($1);
2231: $current_length=~/(\d+\.?\d*)/;
2232: if ($fwidth<$1) {$fwidth=$1;}
2233: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2234: }
2235: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2236: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2237: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2238: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2239: $data=~s/\\\\\s*$//;
2240: } else {
2241: $data=~s/^\s+(\S.*)/$1/;
2242: $data=~s/(.*\S)\s+$/$1/;
2243: $data=~s/(\s)+/$1/;
2244: my ($current_length,$min_length)=(0,0);
2245: if ($data=~/\\vskip/) {
2246: my $newdata=$data;
2247: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2248: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2249: foreach my $elementdata (@newdata) {
2250: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2251: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2252: my @words=split(/ /,$elementdata);
2253: foreach my $word (@words) {
2254: my $lengthword=2.5*&LATEX_length($word);
2255: if ($min_length<$lengthword) {$min_length=$lengthword;}
2256: }
2257: }
2258: } else {
2259: $current_length=2.5*&LATEX_length($data);
2260: my @words=split(/ /,$data);
2261: foreach my $word (@words) {
2262: my $lengthword=2*&LATEX_length($word);
2263: if ($min_length<$lengthword) {$min_length=$lengthword;}
2264: }
2265: }
2266: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2267: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2268: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2269: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2270: }
2271: }
2272: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2273: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2274: }
2275: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2276: return'';
2277: }
2278:
2279: sub end_td {
2280: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2281: my $currentstring = '';
2282: if ($target eq 'web') {
2283: $currentstring = $token->[2];
2284: } elsif ($target eq 'tex') {
2285: $Apache::londefdef::TD_redirection =0;
2286: &end_td_tex($parstack,$parser,$safeeval);
2287: }
2288: return $currentstring;
2289: }
2290:
2291: #-- <th> tag (end tag optional)
2292: sub start_th {
2293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2294: my $currentstring = '';
2295: if ($target eq 'web') {
2296: $currentstring = $token->[4];
2297: } elsif ($target eq 'tex') {
2298: $Apache::londefdef::TD_redirection = 1;
2299: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2300: }
2301: return $currentstring;
2302: }
2303:
2304: sub tagg_check {
2305: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2306: my @ar=@$parstack;
2307: for (my $i=$#ar-1;$i>=0;$i--) {
2308: if (lc($$tagstack[$i]) eq $good_tag) {
2309: &start_th_tex($parstack,$parser,$safeeval);
2310: last;
2311: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2312: splice @ar, $i+1;
2313: &end_th_tex(\@ar,$parser,$safeeval);
2314: &start_th_tex($parstack,$parser,$safeeval);
2315: last;
2316: }
2317: }
2318: return '';
2319: }
2320:
2321: sub start_th_tex {
2322: my ($parstack,$parser,$safeeval) = @_;
2323: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2324: if ($alignchar eq '') {
2325: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2326: }
2327: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2328: $Apache::londefdef::table[-1]{'counter_columns'}++;
2329: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2330: if (defined $TeXwidth) {
2331: my $current_length=&recalc($TeXwidth);
2332: $current_length=~/(\d+\.?\d*)/;
2333: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2334: }
2335: &Apache::lonxml::startredirection();
2336: return '';
2337: }
2338:
2339: sub end_th_tex {
2340: my ($parstack,$parser,$safeeval) = @_;
2341: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2342: my $data=&Apache::lonxml::endredirection();
2343: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2344: if (defined $TeXwidth) {
2345: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2346: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2347: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2348: } else {
2349: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2350: my $garbage_data=$data;
2351: my $fwidth=0;
2352: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2353: my $current_length=&recalc($1);
2354: $current_length=~/(\d+\.?\d*)/;
2355: if ($fwidth<$1) {$fwidth=$1;}
2356: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2357: }
2358: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2359: my $current_length=$1;
2360: if ($fwidth<$current_length) {$fwidth=$current_length;}
2361: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2362: }
2363: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2364: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2365: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2366: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2367: } else {
2368: $data=~s/^\s+(\S.*)/$1/;
2369: $data=~s/(.*\S)\s+$/$1/;
2370: $data=~s/(\s)+/$1/;
2371: my ($current_length,$min_length)=(0,0);
2372: if ($data=~/\\vskip/) {
2373: my $newdata=$data;
2374: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2375: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2376: foreach my $elementdata (@newdata) {
2377: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2378: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2379: my @words=split(/ /,$elementdata);
2380: foreach my $word (@words) {
2381: my $lengthword=2.5*&LATEX_length($word);
2382: if ($min_length<$lengthword) {$min_length=$lengthword;}
2383: }
2384: }
2385: } else {
2386: $current_length=2.5*&LATEX_length($data);
2387: my @words=split(/ /,$data);
2388: foreach my $word (@words) {
2389: my $lengthword=2*&LATEX_length($word);
2390: if ($min_length<$lengthword) {$min_length=$lengthword;}
2391: }
2392: }
2393: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2394: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2395: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2396: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2397: }
2398: }
2399: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2400: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2401: }
2402: #make data bold
2403: $data='\textbf{'.$data.'}';
2404: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2405: return'';
2406: }
2407:
2408: sub end_th {
2409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2410: my $currentstring = '';
2411: if ($target eq 'web') {
2412: $currentstring = $token->[2];
2413: } elsif ($target eq 'tex') {
2414: $Apache::londefdef::TD_redirection =0;
2415: &end_th_tex($parstack,$parser,$safeeval);
2416: }
2417: return $currentstring;
2418: }
2419:
2420: #-- <img> tag (end tag forbidden)
2421: #
2422: # Render the <IMG> tag.
2423: # <IMG> has the following attributes (in addition to the
2424: # standard HTML ones:
2425: # TeXwrap - Governs how the tex target will try to wrap text around
2426: # horizontally aligned images.
2427: # TeXwidth - The width of the image when rendered for print (mm).
2428: # TeXheight - The height of the image when rendered for print (mm)
2429: # (Note there seems to also be support for this as a % of page size)
2430: #
2431: sub start_img {
2432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2433: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2434: undef,1);
2435: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2436: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2437: return '';
2438: }
2439: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2440: my $currentstring = '';
2441: my $scaling = .3;
2442:
2443: # Render unto browsers that which are the browser's...
2444:
2445: if ($target eq 'web') {
2446: if ($ENV{'browser.imagesuppress'} ne 'on') {
2447: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2448: } else {
2449: my $alttag= &Apache::lonxml::get_param
2450: ('alt',$parstack,$safeeval,undef,1);
2451: unless ($alttag) {
2452: $alttag=&Apache::lonmeta::alttag
2453: ($Apache::lonxml::pwd[-1],$src);
2454: }
2455: $currentstring.='[IMAGE: '.$alttag.']';
2456: }
2457:
2458: # and render unto TeX that which is LaTeX
2459:
2460: } elsif ($target eq 'tex') {
2461: #
2462: # The alignment will require some superstructure to be put around
2463: # the \includegraphics stuff. At present we can only partially
2464: # simulate the alignments offered by html.
2465: #
2466: #
2467: my $align = lc(&Apache::lonxml::get_param('align',
2468: $parstack,
2469: $safeeval,
2470: undef,1));
2471: if(!$align) {
2472: $align = "bottom"; # This is html's default so it's ours too.
2473: }
2474: #
2475: &Apache::lonxml::debug("Alignemnt = $align");
2476: # LaTeX's image/text wrapping is really bad since it wants to
2477: # make figures float.
2478: # The user has the optional parameter (applicable only to l/r
2479: # alignment to use the picins/parpic directive to get wrapped text
2480: # this is also imperfect.. that's why we give them a choice...
2481: # so they can't yell at us for our choice.
2482: #
2483: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2484: $parstack,
2485: $safeeval,
2486: undef,0);
2487: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2488: if(!$latex_rendering) {
2489: $latex_rendering = "parbox";
2490: }
2491: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2492:
2493: my $oldSRC=$src;
2494: $oldSRC=~s/\.(gif|jpg|png)$/\.eps/;
2495: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2496: #if original gif/jpg/png file exist do following:
2497: if (-e $src) {
2498: #what is the image size?
2499: my $width_param=&image_width($src,$scaling,$parstack,$safeeval);
2500: my $height_param=&image_height($src,$scaling,$parstack,$safeeval);
2501: my ($file,$path)=&file_path($src);
2502: my $newsrc = $src;
2503: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2504: &Apache::lonnet::repcopy($oldSRC);
2505: $file=~s/\.(gif|jpg|png)$/.eps/i;
2506: #where can we find the picture?
2507: if (-e $newsrc) {
2508: #eps counterpart for image exist
2509: if ($path) {
2510: $currentstring .= '\graphicspath{{'.$path.'}}'
2511: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$file.'} ';
2512: }
2513: } else {
2514: #there is no eps counterpart for image - check for ps one
2515: $newsrc =~ s/\.eps$/\.ps/;
2516: if (-e $newsrc) {
2517: #ps counterpart for image exist
2518: $file =~ s/\.eps$/\.ps/;
2519: if ($path) {
2520: $currentstring .= '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2521: }
2522: } else {
2523: #care about eps dynamical generation
2524: $currentstring.=&eps_generation($src,$file,$width_param);
2525: }
2526: }
2527: # If there's an alignment specification we need to honor it here.
2528: # For the horizontal alignments, we will also honor the
2529: # value of the latex specfication. The default is parbox,
2530: # and that's used for illegal values too.
2531: #
2532: # Even though we set a default alignment value, the user
2533: # could have given us an illegal value. In that case we
2534: # just use the default alignment of bottom..
2535: if ($align eq "top") {
2536: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2537: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2538: my $offset = $height_param/2;
2539: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2540: } elsif ($align eq "left") {
2541: if ($latex_rendering eq "parpic") {
2542: $currentstring = '\parpic[l]{'.$currentstring.'}';
2543: } else { # parbox rendering
2544: $currentstring = "\n".'\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2545: }
2546: } elsif ($align eq "right") {
2547: if ($latex_rendering eq "parpic") {
2548: $currentstring = '\parpic[r]{'.$currentstring.'}';
2549: } else { # parbox rendering.
2550: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2551: .$currentstring.'\end{flushright}} \newline'."\n";
2552: }
2553: } else { # Bottom is also default.
2554: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2555: }
2556: } else {
2557: #original image file doesn't exist so check the alt attribute
2558: my $alt =
2559: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2560: unless ($alt) {
2561: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2562: }
2563:
2564: if ($alt) {
2565: $currentstring .= ' '.$alt.' ';
2566: } else {
2567: #<allow> tag will care about replication
2568: }
2569: }
2570:
2571: # And here's where the semi-quote breaks down: allow the user
2572: # to edit the beast as well by rendering the problem for edit:
2573:
2574:
2575: } elsif ($target eq 'edit') {
2576: $currentstring .=&Apache::edit::tag_start($target,$token);
2577: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2578: &Apache::edit::browse('src',undef,'alt').' '.
2579: &Apache::edit::search('src',undef,'alt').'<br />';
2580: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2581: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2582: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2583: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2584: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2585: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2586: ['','bottom','middle','top','left','right'],$token,5);
2587: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2588: ['', 'parbox', 'parpic'], $token, 2);
2589: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2590: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2591: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2592: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2593: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2594:
2595:
2596: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2597: if ($width) { $currentstring.=' width="'.$width.'" '; }
2598: if ($height) { $currentstring.=' height="'.$height.'" '; }
2599: $currentstring .= ' />';
2600: } elsif ($target eq 'modified') {
2601: my ($osrc,$owidth,$oheight)=
2602: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2603: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2604: $safeeval,'src','alt','align',
2605: 'TeXwidth','TeXheight', 'TeXwrap',
2606: 'width','height');
2607: my ($nsrc,$nwidth,$nheight)=
2608: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2609: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2610: &image_replication($loc);
2611: my ($iwidth,$iheight);
2612: if (-e $loc) {
2613: my $image = Image::Magick->new;
2614: $image->Read($loc);
2615: ($iwidth, $iheight) = ($image->Get('width'),
2616: $image->Get('height'));
2617: }
2618: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2619: # changed image or no size specified,
2620: # if they didn't explicitly change the
2621: # width or height use the ones from the image
2622: if ($iwidth && $iheight) {
2623: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2624: $token->[2]{'width'} = $iwidth;$ctag=1;
2625: }
2626: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2627: $token->[2]{'height'}=$iheight;$ctag=1;
2628: }
2629: }
2630: }
2631: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2632: # if we don't have a width or height
2633: if ($iwidth && $cwidth && !$cheight) {
2634: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2635: }
2636: if ($iheight && $cheight && !$cwidth) {
2637: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2638: }
2639: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2640: }
2641: return $currentstring;
2642: }
2643:
2644: sub end_img {
2645: my ($target,$token) = @_;
2646: my $currentstring = '';
2647: if ($target eq 'web') {
2648: $currentstring = $token->[2];
2649: } elsif ($target eq 'tex') {
2650: $currentstring = '';
2651: }
2652: return $currentstring;
2653: }
2654:
2655: #-- <applet> tag (end tag required)
2656: sub start_applet {
2657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2658:
2659: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2660: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2661:
2662: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2663: undef,1);
2664: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2665:
2666: my $currentstring = '';
2667: if ($target eq 'web') {
2668: if ($ENV{'browser.appletsuppress'} ne 'on') {
2669: $currentstring = &Apache::lonenc::encrypt_ref($token,
2670: {'code'=>$code,
2671: 'archive'=>$archive}
2672: );
2673: } else {
2674: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2675: $safeeval,undef,1);
2676: unless ($alttag) {
2677: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2678: $code);
2679: }
2680: $currentstring='[APPLET: '.$alttag.']';
2681: }
2682: } elsif ($target eq 'tex') {
2683: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2684: $safeeval,undef,1);
2685: unless ($alttag) {
2686: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2687: undef,1);
2688: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2689: $code);
2690: }
2691: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2692: '.}\end{center}';
2693: }
2694: return $currentstring;
2695: }
2696:
2697: sub end_applet {
2698: my ($target,$token) = @_;
2699: my $currentstring = '';
2700: if ($target eq 'web') {
2701: $currentstring = $token->[2];
2702: } elsif ($target eq 'tex') {
2703: }
2704: return $currentstring;
2705: }
2706:
2707: #-- <embed> tag (end tag optional/required)
2708: sub start_embed {
2709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2710: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2711: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2712: my $currentstring = '';
2713: if ($target eq 'web') {
2714: if ($ENV{'browser.embedsuppress'} ne 'on') {
2715: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2716: } else {
2717: my $alttag=&Apache::lonxml::get_param
2718: ('alt',$parstack,$safeeval,undef,1);
2719: unless ($alttag) {
2720: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2721: }
2722: $currentstring='[EMBED: '.$alttag.']';
2723: }
2724: } elsif ($target eq 'tex') {
2725: }
2726: return $currentstring;
2727: }
2728:
2729: sub end_embed {
2730: my ($target,$token) = @_;
2731: my $currentstring = '';
2732: if ($target eq 'web') {
2733: $currentstring = $token->[2];
2734: } elsif ($target eq 'tex') {
2735: }
2736: return $currentstring;
2737: }
2738:
2739: #-- <param> tag (end tag forbidden)
2740: sub start_param {
2741: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2742: if (&Apache::lonxml::get_param
2743: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2744: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2745: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2746: }
2747: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2748: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2749: my $currentstring = '';
2750: if ($target eq 'web') {
2751: my %toconvert;
2752: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2753: if ($src) { $toconvert{'src'}= $src; }
2754: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2755: undef,1);
2756: if ($name=~/^cabbase$/i) {
2757: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2758: $safeeval,undef,1);
2759: }
2760: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2761: } elsif ($target eq 'tex') {
2762: }
2763: return $currentstring;
2764: }
2765:
2766: sub end_param {
2767: my ($target,$token) = @_;
2768: my $currentstring = '';
2769: if ($target eq 'web') {
2770: $currentstring = $token->[2];
2771: } elsif ($target eq 'tex') {
2772: }
2773: return $currentstring;
2774: }
2775:
2776: #-- <allow> tag
2777: sub start_allow {
2778: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2779: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2780: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2781: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2782: &Apache::lonnet::clutter($src);
2783: if ($target eq 'tex') { &image_replication($src); }
2784: my $result;
2785: if ($target eq 'edit') {
2786: $result .=&Apache::edit::tag_start($target,$token);
2787: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2788: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2789: } elsif ($target eq 'modified') {
2790: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2791: $safeeval,'src');
2792: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2793: }
2794: return $result;
2795: }
2796:
2797: sub end_allow {
2798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2799: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2800: return '';
2801: }
2802:
2803: #-- Frames (end tag required)
2804: #-- <frameset>
2805: sub start_frameset {
2806: my ($target,$token) = @_;
2807: my $currentstring = '';
2808: if ($target eq 'web') {
2809: if (!$Apache::lonxml::registered &&
2810: $ENV{'request.state'} eq 'published') {
2811: $currentstring.='<head>'.
2812: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2813: }
2814: my $onLoad='';
2815: foreach my $key (keys(%{$token->[2]})) {
2816: if ($key =~ /^onload$/i) {
2817: $onLoad.=$token->[2]->{$key}.';';
2818: delete($token->[2]->{$key});
2819: }
2820: }
2821: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2822: my $onUnload='';
2823: foreach my $key (keys(%{$token->[2]})) {
2824: if ($key =~ /^onunload$/i) {
2825: $onUnload.=$token->[2]->{$key}.';';
2826: delete($token->[2]->{$key});
2827: }
2828: }
2829: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2830: ';'.$onUnload;
2831:
2832: $currentstring .= '<'.$token->[1];
2833: foreach (keys %{$token->[2]}) {
2834: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2835: }
2836: $currentstring.='>';
2837: }
2838: return $currentstring;
2839: }
2840:
2841: sub end_frameset {
2842: my ($target,$token) = @_;
2843: my $currentstring = '';
2844: if ($target eq 'web') {
2845: $currentstring = $token->[2];
2846: }
2847: return $currentstring;
2848: }
2849:
2850: #-- <xmp> (end tag required)
2851: sub start_xmp {
2852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2853: my $currentstring = '';
2854: if ($target eq 'web') {
2855: $currentstring .= $token->[4];
2856: } elsif ($target eq 'tex') {
2857: $currentstring .= '\begin{verbatim}';
2858: }
2859: return $currentstring;
2860: }
2861:
2862: sub end_xmp {
2863: my ($target,$token) = @_;
2864: my $currentstring = '';
2865: if ($target eq 'web') {
2866: $currentstring .= $token->[2];
2867: } elsif ($target eq 'tex') {
2868: $currentstring .= '\end{verbatim}';
2869: }
2870: return $currentstring;
2871: }
2872:
2873: #-- <pre> (end tag required)
2874: sub start_pre {
2875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2876: my $currentstring = '';
2877: if ($target eq 'web') {
2878: $currentstring .= $token->[4];
2879: } elsif ($target eq 'tex') {
2880: $currentstring .= '\begin{verbatim}';
2881: }
2882: return $currentstring;
2883: }
2884:
2885: sub end_pre {
2886: my ($target,$token) = @_;
2887: my $currentstring = '';
2888: if ($target eq 'web') {
2889: $currentstring .= $token->[2];
2890: } elsif ($target eq 'tex') {
2891: $currentstring .= '\end{verbatim}';
2892: }
2893: return $currentstring;
2894: }
2895:
2896: #-- <insert>
2897: sub start_insert {
2898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2899: my $currentstring = '';
2900: if ($target eq 'web') {
2901: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2902: $currentstring .= '<b>'.$display.'</b>';;
2903: }
2904: return $currentstring;
2905: }
2906:
2907: sub end_insert {
2908: my ($target,$token) = @_;
2909: my $currentstring = '';
2910: if ($target eq 'web') {
2911: $currentstring .= '';
2912: }
2913: return $currentstring;
2914: }
2915:
2916: #-- <externallink>
2917: sub start_externallink {
2918: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2922: $currentstring .= '<b>'.$display.'</b>';;
2923: }
2924: return $currentstring;
2925: }
2926:
2927: sub end_externallink {
2928: my ($target,$token) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'web') {
2931: $currentstring .= '';
2932: }
2933: return $currentstring;
2934: }
2935:
2936: #-- <blankspace heigth="">
2937: sub start_blankspace {
2938: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'tex') {
2941: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2942: $currentstring .= '\vskip '.$howmuch.' ';
2943: }
2944: return $currentstring;
2945: }
2946:
2947: sub end_blankspace {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'tex') {
2951: $currentstring .= '';
2952: }
2953: return $currentstring;
2954: }
2955:
2956: #-- <abbr> tag (end tag required)
2957: sub start_abbr {
2958: my ($target,$token) = @_;
2959: my $currentstring = '';
2960: if ($target eq 'web') {
2961: $currentstring = $token->[4];
2962: }
2963: return $currentstring;
2964: }
2965:
2966: sub end_abbr {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[2];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: #-- <acronym> tag (end tag required)
2976: sub start_acronym {
2977: my ($target,$token) = @_;
2978: my $currentstring = '';
2979: if ($target eq 'web') {
2980: $currentstring = $token->[4];
2981: }
2982: return $currentstring;
2983: }
2984:
2985: sub end_acronym {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[2];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: #-- <area> tag (end tag forbidden)
2995: sub start_area {
2996: my ($target,$token) = @_;
2997: my $currentstring = '';
2998: if ($target eq 'web') {
2999: $currentstring = $token->[4];
3000: }
3001: return $currentstring;
3002: }
3003:
3004: sub end_area {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[2];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: #-- <base> tag (end tag forbidden)
3014: sub start_base {
3015: my ($target,$token) = @_;
3016: my $currentstring = '';
3017: if ($target eq 'web') {
3018: $currentstring = $token->[4];
3019: }
3020: return $currentstring;
3021: }
3022:
3023: sub end_base {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[2];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: #-- <bdo> tag (end tag required)
3033: sub start_bdo {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[4];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_bdo {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[2];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: #-- <bgsound> tag (end tag optional)
3052: sub start_bgsound {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[4];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_bgsound {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <blink> tag (end tag required)
3071: sub start_blink {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[4];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: sub end_blink {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[2];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: #-- <blockquote> tag (end tag required)
3090: sub start_blockquote {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[4];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_blockquote {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[2];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: #-- <button> tag (end tag required)
3109: sub start_button {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[4];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: sub end_button {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[2];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: #-- <caption> tag (end tag required)
3128: sub start_caption {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[4];
3133: }
3134: return $currentstring;
3135: }
3136:
3137: sub end_caption {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[2];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: #-- <col> tag (end tag forbdden)
3147: sub start_col {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web') {
3151: $currentstring = $token->[4];
3152: }
3153: return $currentstring;
3154: }
3155:
3156: sub end_col {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[2];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: #-- <colgroup> tag (end tag optional)
3166: sub start_colgroup {
3167: my ($target,$token) = @_;
3168: my $currentstring = '';
3169: if ($target eq 'web') {
3170: $currentstring = $token->[4];
3171: }
3172: return $currentstring;
3173: }
3174:
3175: sub end_colgroup {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[2];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: #-- <del> tag (end tag required)
3185: sub start_del {
3186: my ($target,$token) = @_;
3187: my $currentstring = '';
3188: if ($target eq 'web') {
3189: $currentstring = $token->[4];
3190: }
3191: return $currentstring;
3192: }
3193:
3194: sub end_del {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[2];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: #-- <fieldset> tag (end tag required)
3204: sub start_fieldset {
3205: my ($target,$token) = @_;
3206: my $currentstring = '';
3207: if ($target eq 'web') {
3208: $currentstring = $token->[4];
3209: }
3210: return $currentstring;
3211: }
3212:
3213: sub end_fieldset {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[2];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: #-- <frame> tag (end tag forbidden)
3223: sub start_frame {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'web') {
3227: $currentstring = $token->[4];
3228: }
3229: return $currentstring;
3230: }
3231:
3232: sub end_frame {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[2];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: #-- <iframe> tag (end tag required)
3242: sub start_iframe {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web') {
3246: $currentstring = $token->[4];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: sub end_iframe {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[2];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: #-- <ins> tag (end tag required)
3261: sub start_ins {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web') {
3265: $currentstring = $token->[4];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: sub end_ins {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[2];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: #-- <isindex> tag (end tag forbidden)
3280: sub start_isindex {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web') {
3284: $currentstring = $token->[4];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: sub end_isindex {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[2];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: #-- <keygen> tag (end tag forbidden)
3299: sub start_keygen {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web') {
3303: $currentstring = $token->[4];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: sub end_keygen {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[2];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: #-- <label> tag
3318: sub start_label {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[4];
3323: }
3324: return $currentstring;
3325: }
3326:
3327: sub end_label {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[2];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: #-- <layer> tag (end tag required)
3337: sub start_layer {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web') {
3341: $currentstring = $token->[4];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: sub end_layer {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[2];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: #-- <legend> tag (end tag required)
3356: sub start_legend {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web') {
3360: $currentstring = $token->[4];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: sub end_legend {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[2];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: #-- <link> tag (end tag forbidden)
3375: sub start_link {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web') {
3379: $currentstring = $token->[4];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: sub end_link {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[2];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: #-- <marquee> tag (end tag optional)
3394: sub start_marquee {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web') {
3398: $currentstring = $token->[4];
3399: }
3400: return $currentstring;
3401: }
3402:
3403: sub end_marquee {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[2];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: #-- <multicol> tag (end tag required)
3413: sub start_multicol {
3414: my ($target,$token) = @_;
3415: my $currentstring = '';
3416: if ($target eq 'web') {
3417: $currentstring = $token->[4];
3418: }
3419: return $currentstring;
3420: }
3421:
3422: sub end_multicol {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[2];
3427: }
3428: return $currentstring;
3429: }
3430:
3431: #-- <nobr> tag (end tag required)
3432: sub start_nobr {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web') {
3436: $currentstring = $token->[4];
3437: } elsif ($target eq 'tex') {
3438: $currentstring='\mbox{';
3439: }
3440: return $currentstring;
3441: }
3442:
3443: sub end_nobr {
3444: my ($target,$token) = @_;
3445: my $currentstring = '';
3446: if ($target eq 'web') {
3447: $currentstring = $token->[2];
3448: } elsif ($target eq 'tex') {
3449: $currentstring='}';
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <noembed> tag (end tag required)
3455: sub start_noembed {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web') {
3459: $currentstring = $token->[4];
3460: }
3461: return $currentstring;
3462: }
3463:
3464: sub end_noembed {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web') {
3468: $currentstring = $token->[2];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: #-- <noframes> tag (end tag required)
3474: sub start_noframes {
3475: my ($target,$token) = @_;
3476: my $currentstring = '';
3477: if ($target eq 'web') {
3478: $currentstring = $token->[4];
3479: }
3480: return $currentstring;
3481: }
3482:
3483: sub end_noframes {
3484: my ($target,$token) = @_;
3485: my $currentstring = '';
3486: if ($target eq 'web') {
3487: $currentstring = $token->[2];
3488: }
3489: return $currentstring;
3490: }
3491:
3492: #-- <nolayer> tag (end tag required)
3493: sub start_nolayer {
3494: my ($target,$token) = @_;
3495: my $currentstring = '';
3496: if ($target eq 'web') {
3497: $currentstring = $token->[4];
3498: }
3499: return $currentstring;
3500: }
3501:
3502: sub end_nolayer {
3503: my ($target,$token) = @_;
3504: my $currentstring = '';
3505: if ($target eq 'web') {
3506: $currentstring = $token->[2];
3507: }
3508: return $currentstring;
3509: }
3510:
3511: #-- <noscript> tag (end tag required)
3512: sub start_noscript {
3513: my ($target,$token) = @_;
3514: my $currentstring = '';
3515: if ($target eq 'web') {
3516: $currentstring = $token->[4];
3517: }
3518: return $currentstring;
3519: }
3520:
3521: sub end_noscript {
3522: my ($target,$token) = @_;
3523: my $currentstring = '';
3524: if ($target eq 'web') {
3525: $currentstring = $token->[2];
3526: }
3527: return $currentstring;
3528: }
3529:
3530: #-- <object> tag (end tag required)
3531: sub start_object {
3532: my ($target,$token) = @_;
3533: my $currentstring = '';
3534: if ($target eq 'web') {
3535: $currentstring = $token->[4];
3536: }
3537: return $currentstring;
3538: }
3539:
3540: sub end_object {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web') {
3544: $currentstring = $token->[2];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: #-- <optgroup> tag (end tag required)
3550: sub start_optgroup {
3551: my ($target,$token) = @_;
3552: my $currentstring = '';
3553: if ($target eq 'web') {
3554: $currentstring = $token->[4];
3555: }
3556: return $currentstring;
3557: }
3558:
3559: sub end_optgroup {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web') {
3563: $currentstring = $token->[2];
3564: }
3565: return $currentstring;
3566: }
3567:
3568: #-- <samp> tag (end tag required)
3569: sub start_samp {
3570: my ($target,$token) = @_;
3571: my $currentstring = '';
3572: if ($target eq 'web') {
3573: $currentstring = $token->[4];
3574: } elsif ($target eq 'tex') {
3575: $currentstring='\texttt{';
3576: }
3577: return $currentstring;
3578: }
3579:
3580: sub end_samp {
3581: my ($target,$token) = @_;
3582: my $currentstring = '';
3583: if ($target eq 'web') {
3584: $currentstring = $token->[2];
3585: } elsif ($target eq 'tex') {
3586: $currentstring='}';
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <server> tag
3592: sub start_server {
3593: my ($target,$token) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web') {
3596: $currentstring = $token->[4];
3597: }
3598: return $currentstring;
3599: }
3600:
3601: sub end_server {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web') {
3605: $currentstring = $token->[2];
3606: }
3607: return $currentstring;
3608: }
3609:
3610: #-- <spacer> tag (end tag forbidden)
3611: sub start_spacer {
3612: my ($target,$token) = @_;
3613: my $currentstring = '';
3614: if ($target eq 'web') {
3615: $currentstring = $token->[4];
3616: }
3617: return $currentstring;
3618: }
3619:
3620: sub end_spacer {
3621: my ($target,$token) = @_;
3622: my $currentstring = '';
3623: if ($target eq 'web') {
3624: $currentstring = $token->[2];
3625: }
3626: return $currentstring;
3627: }
3628:
3629: #-- <span> tag (end tag required)
3630: sub start_span {
3631: my ($target,$token) = @_;
3632: my $currentstring = '';
3633: if ($target eq 'web') {
3634: $currentstring = $token->[4];
3635: }
3636: return $currentstring;
3637: }
3638:
3639: sub end_span {
3640: my ($target,$token) = @_;
3641: my $currentstring = '';
3642: if ($target eq 'web') {
3643: $currentstring = $token->[2];
3644: }
3645: return $currentstring;
3646: }
3647:
3648: #-- <tbody> tag (end tag optional)
3649: sub start_tbody {
3650: my ($target,$token) = @_;
3651: my $currentstring = '';
3652: if ($target eq 'web') {
3653: $currentstring = $token->[4];
3654: }
3655: return $currentstring;
3656: }
3657:
3658: sub end_tbody {
3659: my ($target,$token) = @_;
3660: my $currentstring = '';
3661: if ($target eq 'web') {
3662: $currentstring = $token->[2];
3663: }
3664: return $currentstring;
3665: }
3666:
3667: #-- <tfoot> tag (end tag optional)
3668: sub start_tfoot {
3669: my ($target,$token) = @_;
3670: my $currentstring = '';
3671: if ($target eq 'web') {
3672: $currentstring = $token->[4];
3673: }
3674: return $currentstring;
3675: }
3676:
3677: sub end_tfoot {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web') {
3681: $currentstring = $token->[2];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: #-- <thead> tag (end tag optional)
3687: sub start_thead {
3688: my ($target,$token) = @_;
3689: my $currentstring = '';
3690: if ($target eq 'web') {
3691: $currentstring = $token->[4];
3692: }
3693: return $currentstring;
3694: }
3695:
3696: sub end_thead {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web') {
3700: $currentstring = $token->[2];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: #-- <var> tag
3706: sub start_var {
3707: my ($target,$token) = @_;
3708: my $currentstring = '';
3709: if ($target eq 'web') {
3710: $currentstring = $token->[4];
3711: } elsif ($target eq 'tex') {
3712: $currentstring = '\textit{';
3713: }
3714: return $currentstring;
3715: }
3716:
3717: sub end_var {
3718: my ($target,$token) = @_;
3719: my $currentstring = '';
3720: if ($target eq 'web') {
3721: $currentstring = $token->[2];
3722: } elsif ($target eq 'tex') {
3723: $currentstring = '}';
3724: }
3725: return $currentstring;
3726: }
3727:
3728: #-- <wbr> tag (end tag forbidden)
3729: sub start_wbr {
3730: my ($target,$token) = @_;
3731: my $currentstring = '';
3732: if ($target eq 'web') {
3733: $currentstring = $token->[4];
3734: }
3735: return $currentstring;
3736: }
3737:
3738: sub end_wbr {
3739: my ($target,$token) = @_;
3740: my $currentstring = '';
3741: if ($target eq 'web') {
3742: $currentstring = $token->[2];
3743: }
3744: return $currentstring;
3745: }
3746:
3747: #-- <hideweboutput> tag
3748: sub start_hideweboutput {
3749: my ($target,$token) = @_;
3750: if ($target eq 'web') {
3751: &Apache::lonxml::startredirection();
3752: }
3753: return '';
3754: }
3755:
3756: sub end_hideweboutput {
3757: my ($target,$token) = @_;
3758: my $currentstring = '';
3759: if ($target eq 'web') {
3760: $currentstring = &Apache::lonxml::endredirection();
3761: }
3762: return '';
3763: }
3764:
3765:
3766: sub image_replication {
3767: my $src = shift;
3768: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3769: #replicates eps or ps
3770: my $epssrc = my $pssrc = $src;
3771: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3772: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3773: if (not -e $epssrc && not -e $pssrc) {
3774: my $result=&Apache::lonnet::repcopy($epssrc);
3775: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3776: }
3777: return '';
3778: }
3779:
3780: sub image_size {
3781: my ($src,$scaling,$parstack,$safeeval)=@_;
3782: #size of image from gif/jpg/jpeg/png
3783: my $image = Image::Magick->new;
3784: my $current_figure = $image->Read($src);
3785: my $width_param = $image->Get('width') * $scaling;;
3786: my $height_param = $image->Get('height') * $scaling;;
3787: undef $image;
3788: #do we have any specified LaTeX size of the picture?
3789: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3790: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3791: #do we have any specified web size of the picture?
3792: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3793: undef,1);
3794: if ($TeXwidth ne '') {
3795: my $old_width_param=$width_param;
3796: if ($TeXwidth=~/(\d+)\s*\%/) {
3797: $width_param = $1*$ENV{'form.textwidth'}/100;
3798: } else {
3799: $width_param = $TeXwidth;
3800: }
3801: $height_param=$TeXwidth/$old_width_param*$height_param;
3802: } elsif ($TeXheight ne '') {
3803: $height_param = $TeXheight;
3804: $width_param = $TeXheight/$height_param*$width_param;
3805: } elsif ($width ne '') {
3806: my $old_width_param=$width_param;
3807: $width_param = $width*$scaling;
3808: $height_param=$width_param/$old_width_param*$height_param;
3809: }
3810: if ($width_param > $ENV{'form.textwidth'}) {
3811: my $old_width_param=$width_param;
3812: $width_param =0.95*$ENV{'form.textwidth'};
3813: $height_param=$width_param/$old_width_param*$height_param;
3814: }
3815: return ($height_param, $width_param);
3816: }
3817:
3818: sub image_width {
3819: my ($height, $width) = &image_size(@_);
3820: return $width;
3821: }
3822: # Not yet 100% sure this is correct in all circumstances..
3823: # due to my uncertainty about mods to image_size.
3824: #
3825: sub image_height {
3826: my ($height, $width) = &image_size(@_);
3827: return $height;
3828: }
3829:
3830: sub eps_generation {
3831: my ($src,$file,$width_param) = @_;
3832: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3833: my $temp_file = Apache::File->new('>>'.$filename);
3834: print $temp_file "$src\n";
3835: my $newsrc = $src;
3836: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3837: $newsrc=~s/\/home\/httpd\/html\/res//;
3838: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3839: $newsrc=~s/\/\.\//\//;
3840: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3841: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3842: $newsrc=~s/\/home\/httpd\/lonUsers//;
3843: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3844: }
3845: if ($newsrc=~/\/userfiles\//) {
3846: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3847: } else {
3848: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3849: }
3850: }
3851:
3852: sub file_path {
3853: my $src=shift;
3854: my ($file,$path);
3855: if ($src =~ m!(.*)/([^/]*)$!) {
3856: $file = $2;
3857: $path = $1.'/';
3858: }
3859: return $file,$path;
3860: }
3861:
3862: sub recalc {
3863: my $argument = shift;
3864: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3865: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3866: my $value=$1;
3867: my $units=$2;
3868: if ($units eq 'cm') {
3869: $value*=10;
3870: } elsif ($units eq 'in') {
3871: $value*=25.4;
3872: } elsif ($units eq 'pc') {
3873: $value*=(25.4*12/72.27);
3874: } elsif ($units eq 'pt') {
3875: $value*=(25.4/72.27);
3876: }
3877: return $value.' mm';
3878: }
3879:
3880: sub LATEX_length {
3881: my $garbage=shift;
3882: $garbage=~s/^\s+$//;
3883: $garbage=~s/^\s+(\S.*)/$1/;#space before
3884: $garbage=~s/(.*\S)\s+$/$1/;#space after
3885: $garbage=~s/(\s)+/$1/;#only one space
3886: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3887: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3888: $garbage=~s/([^\\])\$/$1/g;#$
3889: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3890: $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;
3891: $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;
3892: $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;
3893: $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;
3894: $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;
3895: $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;
3896: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3897: #remove some other LaTeX command
3898: $garbage=~s|\\(\w+)\\|\\|g;
3899: $garbage=~s|\\(\w+)(\s*)|$2|g;
3900: $garbage=~s|\+|11|g;
3901: my $value=length($garbage);
3902: return $value;
3903: }
3904:
3905:
3906:
3907:
3908: 1;
3909: __END__
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