1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.255 2005/02/09 19:51:43 albertel 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') ||
156: (!$ENV{'request.role.adv'})) {$currentstring .='\batchmode';}
157: $currentstring .= '\newcommand{\keephidden}[1]{}'.
158: '\renewcommand{\deg}{$^{\circ}$}'.
159: '\usepackage{longtable}'.
160: '\usepackage{textcomp}'.
161: '\usepackage{makeidx}'.
162: '\usepackage[dvips]{graphicx}'.
163: '\usepackage{picins}'.
164: '\usepackage{epsfig}'.
165: '\usepackage{calc}'.
166: '\usepackage{amsmath}'.
167: '\usepackage{amssymb}'.
168: '\usepackage{amsfonts}'.
169: '\usepackage{amsthm}'.
170: '\usepackage{amscd}'.
171: '\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}}'.
172: '\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}}';
173: }
174: return $currentstring;
175: }
176:
177: sub end_html {
178: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
179: my $currentstring = '';
180: if ($target eq 'web') {
181: $currentstring = &Apache::lonxml::xmlend($target,$parser);
182: }
183: return $currentstring;
184: }
185:
186: #-- <head> tag (end tag optional)
187: sub start_head {
188: my ($target,$token) = @_;
189: my $currentstring = '';
190: if ($target eq 'web') {
191: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
192: }
193: return $currentstring;
194: }
195:
196: sub end_head {
197: my ($target,$token) = @_;
198: my $currentstring = '';
199: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
200: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
201: $token->[2];
202: }
203: return $currentstring;
204: }
205:
206: #-- <map> tag (end tag required)
207: sub start_map {
208: my ($target,$token) = @_;
209: my $currentstring = '';
210: if ($target eq 'web') {
211: $currentstring = $token->[4];
212: }
213: return $currentstring;
214: }
215:
216: sub end_map {
217: my ($target,$token) = @_;
218: my $currentstring = '';
219: if ($target eq 'web') {
220: $currentstring = $token->[2];
221: }
222: return $currentstring;
223: }
224:
225: #-- <select> tag (end tag required)
226: sub start_select {
227: my ($target,$token) = @_;
228: my $currentstring = '';
229: if ($target eq 'web') {
230: $currentstring = $token->[4];
231: } elsif ($target eq 'tex') {
232: $Apache::londefdef::select=0;
233: }
234: return $currentstring;
235: }
236:
237: sub end_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web') {
241: $currentstring = $token->[2];
242: }
243: return $currentstring;
244: }
245:
246: #-- <option> tag (end tag optional)
247: sub start_option {
248: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
249: my $currentstring = '';
250: if ($target eq 'web') {
251: $currentstring = $token->[4];
252: } elsif ($target eq 'tex') {
253: $Apache::londefdef::select++;
254: if ($Apache::londefdef::select == 1) {
255: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
256: } else {
257: $currentstring='\keephidden{';
258: }
259: }
260: return $currentstring;
261: }
262:
263: sub end_option {
264: my ($target,$token) = @_;
265: my $currentstring = '';
266: if ($target eq 'web') {
267: $currentstring = $token->[2];
268: } elsif ($target eq 'tex') {
269: $currentstring='}';
270: }
271: return $currentstring;
272: }
273:
274: #-- <input> tag (end tag forbidden)
275: sub start_input {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web') {
279: $currentstring = $token->[4];
280: }
281: return $currentstring;
282: }
283:
284: sub end_input {
285: my ($target,$token) = @_;
286: my $currentstring = '';
287: if ($target eq 'web') {
288: $currentstring = $token->[2];
289: }
290: return $currentstring;
291: }
292:
293: #-- <textarea> tag (end tag required)
294: sub start_textarea {
295: my ($target,$token) = @_;
296: my $currentstring = '';
297: if ($target eq 'web') {
298: $currentstring = $token->[4];
299: }
300: return $currentstring;
301: }
302:
303: sub end_textarea {
304: my ($target,$token) = @_;
305: my $currentstring = '';
306: if ($target eq 'web') {
307: $currentstring = $token->[2];
308: }
309: return $currentstring;
310: }
311:
312: #-- <form> tag (end tag required)
313: sub start_form {
314: my ($target,$token) = @_;
315: my $currentstring = '';
316: if ($target eq 'web') {
317: $currentstring = $token->[4];
318: }
319: return $currentstring;
320: }
321:
322: sub end_form {
323: my ($target,$token) = @_;
324: my $currentstring = '';
325: if ($target eq 'web') {
326: $currentstring = $token->[2];
327: }
328: return $currentstring;
329: }
330:
331: #-- <title> tag (end tag required)
332: sub start_title {
333: my ($target,$token) = @_;
334: my $currentstring = '';
335: if ($target eq 'web') {
336: $currentstring = $token->[4];
337: } elsif ($target eq 'tex') {
338: $currentstring .= '\keephidden{Title of the document: '
339: }
340: if ($target eq 'meta') {
341: $currentstring='<title>';
342: &start_output($target);
343: }
344: return $currentstring;
345: }
346:
347: sub end_title {
348: my ($target,$token) = @_;
349: my $currentstring = '';
350: if ($target eq 'web') {
351: $currentstring = $token->[2];
352: } elsif ($target eq 'tex') {
353: $currentstring .= '}';
354: }
355: if ($target eq 'meta') {
356: &end_output($target);
357: $currentstring='</title>';
358: }
359: return $currentstring;
360: }
361:
362: #-- <meta> tag (end tag forbidden)
363: sub start_meta {
364: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
365: my $currentstring = '';
366: if ($target eq 'web') {
367: my $args='';
368: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
369: if ($args eq '') {
370: &Apache::lonxml::get_all_text("/meta",$parser);
371: } else {
372: $currentstring = $token->[4];
373: }
374: } elsif ($target eq 'meta') {
375: unless (&Apache::lonxml::get_param
376: ('http-equiv',$parstack,$safeeval,undef,1)) {
377: my $name=$token->[2]->{'name'};
378: $name=~tr/A-Z/a-z/;
379: $name=~s/\s/\_/gs;
380: $name=~s/\W//gs;
381: if ($name) {
382: $currentstring='<'.$name;
383: my $display=&Apache::lonxml::get_param
384: ('display',$parstack,$safeeval,undef,1);
385: if ($display) {
386: $display=~s/\"/\'/g;
387: $currentstring.=' display="'.$display.'"';
388: }
389: $currentstring.='>'.
390: &Apache::lonxml::get_param
391: ('content',$parstack,$safeeval,undef,1).
392: '</'.$name.'>';
393: }
394: my $display=&Apache::lonxml::get_param
395: ('display',$parstack,$safeeval,undef,1);
396: if ($display) {
397: $display=&HTML::Entities::encode($display,'<>&"');
398: $currentstring.='<'.$name.'.display>'.$display.
399: '</'.$name.'.display>';
400: }
401: }
402: } elsif ($target eq 'tex') {
403: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
404: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
405: if ((not defined $content) && (not defined $name)) {
406: &Apache::lonxml::startredirection();
407: }
408: }
409: return $currentstring;
410: }
411:
412: sub end_meta {
413: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
414: my $currentstring = '';
415: if ($target eq 'web') {
416: my $args='';
417: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
418: if ($args ne '') {
419: $currentstring = $token->[4];
420: }
421: } elsif ($target eq 'tex') {
422: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
423: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
424: if ((not defined $content) && (not defined $name)) {
425: &Apache::lonxml::endredirection();
426: }
427: }
428: return $currentstring;
429: }
430:
431: # accessrule
432: sub start_accessrule {
433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
434: my $currentstring = '';
435: my $eff=&Apache::lonxml::get_param
436: ('effect',$parstack,$safeeval,undef,1);
437: my $realm=&Apache::lonxml::get_param
438: ('realm',$parstack,$safeeval,undef,1);
439: my $role=&Apache::lonxml::get_param
440: ('role',$parstack,$safeeval,undef,1);
441: $realm=~s/\s+//g;
442: $realm=~s/\//\_/g;
443: $realm=~s/^\_//;
444: $realm=~s/\W/\;/g;
445: $role=~s/\s+//g;
446: $role=~s/\//\_/g;
447: $role=~s/\W/\;/g;
448: if ($target eq 'web') {
449: my $args='';
450: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
451: if ($args eq '') {
452: &Apache::lonxml::get_all_text("/accessrule",$parser);
453: } else {
454: $currentstring = $token->[4];
455: }
456: }
457: if ($target eq 'meta') {
458: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
459: }
460: return $currentstring;
461: }
462:
463: sub end_accessrule {
464: my ($target,$token,$tagstack,$parstack,$parser) = @_;
465: my $currentstring = '';
466: if ($target eq 'web') {
467: my $args='';
468: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
469: if ($args ne '') {
470: $currentstring = $token->[4];
471: }
472: }
473: return $currentstring;
474: }
475:
476: #-- <body> tag (end tag required)
477: sub start_body {
478: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
479: my $currentstring = '';
480:
481: if ($target eq 'web') {
482: if ($Apache::lonhomework::parsing_a_problem) {
483: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
484: return '';
485: }
486: if (!$Apache::lonxml::registered &&
487: $ENV{'request.state'} eq 'published') {
488: $currentstring.='<head>'.
489: &Apache::lonmenu::registerurl(undef,$target).'</head>';
490: }
491: # Accessibility
492: if ($ENV{'browser.imagesuppress'} eq 'on') {
493: delete($token->[2]->{'background'});
494: }
495: if ($ENV{'browser.fontenhance'} eq 'on') {
496: my $style='';
497: foreach my $key (keys(%{$token->[2]})) {
498: if ($key =~ /^style$/i) {
499: $style.=$token->[2]->{$key}.';';
500: delete($token->[2]->{$key});
501: }
502: }
503: $token->[2]->{'style'}=$style.'; font-size: x-large;';
504: }
505: if ($ENV{'browser.blackwhite'} eq 'on') {
506: delete($token->[2]->{'font'});
507: delete($token->[2]->{'link'});
508: delete($token->[2]->{'alink'});
509: delete($token->[2]->{'vlink'});
510: delete($token->[2]->{'bgcolor'});
511: delete($token->[2]->{'background'});
512: }
513: # Overload loads
514: my $onLoad='';
515: foreach my $key (keys(%{$token->[2]})) {
516: if ($key =~ /^onload$/i) {
517: $onLoad.=$token->[2]->{$key}.';';
518: delete($token->[2]->{$key});
519: }
520: }
521: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
522: my $onUnload='';
523: foreach my $key (keys(%{$token->[2]})) {
524: if ($key =~ /^onunload$/i) {
525: $onUnload.=$token->[2]->{$key}.';';
526: delete($token->[2]->{$key});
527: }
528: }
529: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
530: ';'.$onUnload;
531:
532: if ($ENV{'request.state'} ne 'construct') {
533: $currentstring .= '<'.$token->[1];
534: }
535: foreach (keys %{$token->[2]}) {
536: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
537: }
538: if ($ENV{'request.state'} ne 'construct') {
539: $currentstring.='>';
540: }
541: if ($ENV{'request.state'} ne 'published') {
542: my $remote=($ENV{'environment.remote'} ne 'off');
543: $currentstring=&Apache::loncommon::bodytag(undef,undef,
544: $currentstring,$remote);
545: $currentstring.=(<<EDITBUTTON);
546: <form method="post">
547: <input type="submit" name="editmode" accesskey="e" value="Edit" />
548: </form>
549: EDITBUTTON
550: } else {
551: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
552: }
553: $currentstring.=&Apache::lonxml::message_location();
554: } elsif ($target eq 'tex') {
555: $currentstring = '\begin{document}';
556: }
557: return $currentstring;
558: }
559:
560: sub end_body {
561: my ($target,$token) = @_;
562: my $currentstring = '';
563: if ($target eq 'web') {
564: $currentstring = $token->[2];
565: } elsif ($target eq 'tex') {
566: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
567: }
568: return $currentstring;
569: }
570:
571: #-- <center> tag (end tag required)
572: sub start_center {
573: my ($target,$token) = @_;
574: my $currentstring = '';
575: if ($target eq 'web') {
576: $currentstring = $token->[4];
577: } elsif ($target eq 'tex') {
578: $currentstring = '\begin{center}';
579: }
580: return $currentstring;
581: }
582:
583: sub end_center {
584: my ($target,$token) = @_;
585: my $currentstring = '';
586: if ($target eq 'web') {
587: $currentstring = $token->[2];
588: } elsif ($target eq 'tex') {
589: $currentstring = '\end{center}';
590: }
591: return $currentstring;
592: }
593:
594: #-- <b> tag (end tag required)
595: sub start_b {
596: my ($target,$token) = @_;
597: my $currentstring = '';
598: if ($target eq 'web') {
599: $currentstring = $token->[4];
600: } elsif ($target eq 'tex') {
601: $currentstring = '\textbf{';
602: }
603: return $currentstring;
604: }
605:
606: sub end_b {
607: my ($target,$token) = @_;
608: my $currentstring = '';
609: if ($target eq 'web') {
610: $currentstring = $token->[2];
611: } elsif ($target eq 'tex') {
612: $currentstring = '}';
613: }
614: return $currentstring;
615: }
616:
617: #-- <strong> tag (end tag required)
618: sub start_strong {
619: my ($target,$token) = @_;
620: my $currentstring = '';
621: if ($target eq 'web') {
622: $currentstring = $token->[4];
623: } elsif ($target eq 'tex') {
624: $currentstring = '\textbf{';
625: }
626: return $currentstring;
627: }
628:
629: sub end_strong {
630: my ($target,$token) = @_;
631: my $currentstring = '';
632: if ($target eq 'web') {
633: $currentstring = $token->[2];
634: } elsif ($target eq 'tex') {
635: $currentstring = '}';
636: }
637: return $currentstring;
638: }
639:
640: #-- <h1> tag (end tag required)
641: sub start_h1 {
642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
643: my $currentstring = '';
644: if ($target eq 'web') {
645: $currentstring .= $token->[4];
646: } elsif ($target eq 'tex') {
647: my $pre;
648: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
649: if ($align eq 'center') {
650: $pre='\begin{center}';
651: } elsif ($align eq 'left') {
652: $pre='\rlap{';
653: } elsif ($align eq 'right') {
654: $pre=' \hfill \llap{';
655: }
656: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
657: if (not defined $TeXsize) {$TeXsize="large";}
658: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
659: } elsif ($target eq 'meta') {
660: $currentstring='<subject>';
661: &start_output($target);
662: }
663: return $currentstring;
664: }
665:
666: sub end_h1 {
667: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
668: my $currentstring = '';
669: if ($target eq 'web') {
670: $currentstring .= $token->[2];
671: } elsif ($target eq 'tex') {
672: my $post='\vskip 0 mm ';
673: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
674: if ($align eq 'center') {
675: $post='\end{center}';
676: } elsif ($align eq 'left') {
677: $post='} \hfill'.'\vskip 0 mm ';
678: } elsif ($align eq 'right') {
679: $post='}'.'\vskip 0 mm ';
680: }
681: $currentstring .= '}}'.$post;
682: } elsif ($target eq 'meta') {
683: &end_output($target);
684: $currentstring='</subject>';
685: }
686: return $currentstring;
687: }
688:
689: #-- <h2> tag
690: sub start_h2 {
691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
692: my $currentstring = '';
693: if ($target eq 'web') {
694: $currentstring .= $token->[4];
695: } elsif ($target eq 'tex') {
696: my $pre;
697: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
698: if ($align eq 'center') {
699: $pre='\begin{center}';
700: } elsif ($align eq 'left') {
701: $pre='\rlap{';
702: } elsif ($align eq 'right') {
703: $pre=' \hfill \llap{';
704: }
705: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
706: if (not defined $TeXsize) {$TeXsize="large";}
707: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
708: }
709: return $currentstring;
710: }
711:
712: sub end_h2 {
713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
714: my $currentstring = '';
715: if ($target eq 'web') {
716: $currentstring .= $token->[2];
717: } elsif ($target eq 'tex') {
718: my $post='\vskip 0 mm ';
719: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
720: if ($align eq 'center') {
721: $post='\end{center}';
722: } elsif ($align eq 'left') {
723: $post='} \hfill'.'\vskip 0 mm ';
724: } elsif ($align eq 'right') {
725: $post='}'.'\vskip 0 mm ';
726: }
727: $currentstring .= '}}'.$post;
728: }
729: return $currentstring;
730: }
731:
732: #-- <h3> tag
733: sub start_h3 {
734: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
735: my $currentstring = '';
736: if ($target eq 'web') {
737: $currentstring .= $token->[4];
738: } elsif ($target eq 'tex') {
739: my $pre;
740: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
741: if ($align eq 'center') {
742: $pre='\begin{center}';
743: } elsif ($align eq 'left') {
744: $pre='\rlap{';
745: } elsif ($align eq 'right') {
746: $pre=' \hfill \llap{';
747: }
748: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
749: if (not defined $TeXsize) {$TeXsize="large";}
750: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
751: }
752: return $currentstring;
753: }
754:
755: sub end_h3 {
756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
757: my $currentstring = '';
758: if ($target eq 'web') {
759: $currentstring .= $token->[2];
760: } elsif ($target eq 'tex') {
761: my $post='\vskip 0 mm ';
762: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
763: if ($align eq 'center') {
764: $post='\end{center}';
765: } elsif ($align eq 'left') {
766: $post='} \hfill'.'\vskip 0 mm ';
767: } elsif ($align eq 'right') {
768: $post='}'.'\vskip 0 mm ';
769: }
770: $currentstring .= '}}'.$post;
771: }
772: return $currentstring;
773: }
774:
775: #-- <h4> tag
776: sub start_h4 {
777: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
778: my $currentstring = '';
779: if ($target eq 'web') {
780: $currentstring .= $token->[4];
781: } elsif ($target eq 'tex') {
782: my $pre;
783: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
784: if ($align eq 'center') {
785: $pre='\begin{center}';
786: } elsif ($align eq 'left') {
787: $pre='\rlap{';
788: } elsif ($align eq 'right') {
789: $pre=' \hfill \llap{';
790: }
791: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
792: if (not defined $TeXsize) {$TeXsize="large";}
793: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
794: }
795: return $currentstring;
796: }
797:
798: sub end_h4 {
799: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
800: my $currentstring = '';
801: if ($target eq 'web') {
802: $currentstring .= $token->[2];
803: } elsif ($target eq 'tex') {
804: my $post='\vskip 0 mm ';
805: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
806: if ($align eq 'center') {
807: $post='\end{center}';
808: } elsif ($align eq 'left') {
809: $post='} \hfill'.'\vskip 0 mm ';
810: } elsif ($align eq 'right') {
811: $post='}'.'\vskip 0 mm ';
812: }
813: $currentstring .= '}}'.$post;
814: }
815: return $currentstring;
816: }
817:
818: #-- <h5> tag
819: sub start_h5 {
820: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
821: my $currentstring = '';
822: if ($target eq 'web') {
823: $currentstring .= $token->[4];
824: } elsif ($target eq 'tex') {
825: my $pre;
826: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
827: if ($align eq 'center') {
828: $pre='\begin{center}';
829: } elsif ($align eq 'left') {
830: $pre='\rlap{';
831: } elsif ($align eq 'right') {
832: $pre=' \hfill \llap{';
833: }
834: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
835: if (not defined $TeXsize) {$TeXsize="large";}
836: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
837: }
838: return $currentstring;
839: }
840:
841: sub end_h5 {
842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
843: my $currentstring = '';
844: if ($target eq 'web') {
845: $currentstring .= $token->[2];
846: } elsif ($target eq 'tex') {
847: my $post='\vskip 0 mm ';
848: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
849: if ($align eq 'center') {
850: $post='\end{center}';
851: } elsif ($align eq 'left') {
852: $post='} \hfill'.'\vskip 0 mm ';
853: } elsif ($align eq 'right') {
854: $post='}'.'\vskip 0 mm ';
855: }
856: $currentstring .= '}}'.$post;
857: }
858: return $currentstring;
859: }
860:
861: #-- <h6> tag
862: sub start_h6 {
863: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
864: my $currentstring = '';
865: if ($target eq 'web') {
866: $currentstring .= $token->[4];
867: } elsif ($target eq 'tex') {
868: my $pre;
869: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
870: if ($align eq 'center') {
871: $pre='\begin{center}';
872: } elsif ($align eq 'left') {
873: $pre='\rlap{';
874: } elsif ($align eq 'right') {
875: $pre=' \hfill \llap{';
876: }
877: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
878: if (not defined $TeXsize) {$TeXsize="large";}
879: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
880: }
881: return $currentstring;
882: }
883:
884: sub end_h6 {
885: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
886: my $currentstring = '';
887: if ($target eq 'web') {
888: $currentstring .= $token->[2];
889: } elsif ($target eq 'tex') {
890: my $post='\vskip 0 mm ';
891: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
892: if ($align eq 'center') {
893: $post='\end{center}';
894: } elsif ($align eq 'left') {
895: $post='} \hfill'.'\vskip 0 mm ';
896: } elsif ($align eq 'right') {
897: $post='}'.'\vskip 0 mm ';
898: }
899: $currentstring .= '}}'.$post;
900: }
901: return $currentstring;
902: }
903:
904: #--- <cite> tag (end tag required)
905: sub start_cite {
906: my ($target,$token) = @_;
907: my $currentstring = '';
908: if ($target eq 'web') {
909: $currentstring .= $token->[4];
910: } elsif ($target eq 'tex') {
911: $currentstring .= '\textit{';
912: }
913: return $currentstring;
914: }
915:
916: sub end_cite {
917: my ($target,$token) = @_;
918: my $currentstring = '';
919: if ($target eq 'web') {
920: $currentstring .= $token->[2];
921: } elsif ($target eq 'tex') {
922: $currentstring .= '}';
923: }
924: return $currentstring;
925: }
926:
927: #-- <i> tag (end tag required)
928: sub start_i {
929: my ($target,$token) = @_;
930: my $currentstring = '';
931: if ($target eq 'web') {
932: $currentstring .= $token->[4];
933: } elsif ($target eq 'tex') {
934: $currentstring .= '\textit{';
935: }
936: return $currentstring;
937: }
938:
939: sub end_i {
940: my ($target,$token) = @_;
941: my $currentstring = '';
942: if ($target eq 'web') {
943: $currentstring .= $token->[2];
944: } elsif ($target eq 'tex') {
945: $currentstring .= '}';
946: }
947: return $currentstring;
948: }
949:
950: #-- <address> tag (end tag required)
951: sub start_address {
952: my ($target,$token) = @_;
953: my $currentstring = '';
954: if ($target eq 'web') {
955: $currentstring .= $token->[4];
956: } elsif ($target eq 'tex') {
957: $currentstring .= '\textit{';
958: }
959: return $currentstring;
960: }
961:
962: sub end_address {
963: my ($target,$token) = @_;
964: my $currentstring = '';
965: if ($target eq 'web') {
966: $currentstring .= $token->[2];
967: } elsif ($target eq 'tex') {
968: $currentstring .= '}';
969: }
970: return $currentstring;
971: }
972:
973: #-- <dfn> tag (end tag required)
974: sub start_dfn {
975: my ($target,$token) = @_;
976: my $currentstring = '';
977: if ($target eq 'web') {
978: $currentstring .= $token->[4];
979: } elsif ($target eq 'tex') {
980: $currentstring .= '\textit{';
981: }
982: return $currentstring;
983: }
984:
985: sub end_dfn {
986: my ($target,$token) = @_;
987: my $currentstring = '';
988: if ($target eq 'web') {
989: $currentstring .= $token->[2];
990: } elsif ($target eq 'tex') {
991: $currentstring .= '}';
992: }
993: return $currentstring;
994: }
995:
996: #-- <tt> tag (end tag required)
997: sub start_tt {
998: my ($target,$token) = @_;
999: my $currentstring = '';
1000: if ($target eq 'web') {
1001: $currentstring .= $token->[4];
1002: } elsif ($target eq 'tex') {
1003: $currentstring .= '\texttt{';
1004: }
1005: return $currentstring;
1006: }
1007:
1008: sub end_tt {
1009: my ($target,$token) = @_;
1010: my $currentstring = '';
1011: if ($target eq 'web') {
1012: $currentstring .= $token->[2];
1013: } elsif ($target eq 'tex') {
1014: $currentstring .= '}';
1015: }
1016: return $currentstring;
1017: }
1018:
1019: #-- <kbd> tag (end tag required)
1020: sub start_kbd {
1021: my ($target,$token) = @_;
1022: my $currentstring = '';
1023: if ($target eq 'web') {
1024: $currentstring .= $token->[4];
1025: } elsif ($target eq 'tex') {
1026: $currentstring .= '\texttt{';
1027: }
1028: return $currentstring;
1029: }
1030:
1031: sub end_kbd {
1032: my ($target,$token) = @_;
1033: my $currentstring = '';
1034: if ($target eq 'web') {
1035: $currentstring .= $token->[2];
1036: } elsif ($target eq 'tex') {
1037: $currentstring .= '}';
1038: }
1039: return $currentstring;
1040: }
1041:
1042: #-- <code> tag (end tag required)
1043: sub start_code {
1044: my ($target,$token) = @_;
1045: my $currentstring = '';
1046: if ($target eq 'web') {
1047: $currentstring .= $token->[4];
1048: } elsif ($target eq 'tex') {
1049: $currentstring .= '\texttt{';
1050: }
1051: return $currentstring;
1052: }
1053:
1054: sub end_code {
1055: my ($target,$token) = @_;
1056: my $currentstring = '';
1057: if ($target eq 'web') {
1058: $currentstring .= $token->[2];
1059: } elsif ($target eq 'tex') {
1060: $currentstring .= '}';
1061: }
1062: return $currentstring;
1063: }
1064:
1065: #-- <em> tag (end tag required)
1066: sub start_em {
1067: my ($target,$token) = @_;
1068: my $currentstring = '';
1069: if ($target eq 'web') {
1070: $currentstring .= $token->[4];
1071: } elsif ($target eq 'tex') {
1072: $currentstring .= '\emph{';
1073: }
1074: return $currentstring;
1075: }
1076:
1077: sub end_em {
1078: my ($target,$token) = @_;
1079: my $currentstring = '';
1080: if ($target eq 'web') {
1081: $currentstring .= $token->[2];
1082: } elsif ($target eq 'tex') {
1083: $currentstring .= '}';
1084: }
1085: return $currentstring;
1086: }
1087:
1088: #-- <q> tag (end tag required)
1089: sub start_q {
1090: my ($target,$token) = @_;
1091: my $currentstring = '';
1092: if ($target eq 'web') {
1093: $currentstring .= $token->[4];
1094: } elsif ($target eq 'tex') {
1095: $currentstring .= '\emph{';
1096: }
1097: return $currentstring;
1098: }
1099:
1100: sub end_q {
1101: my ($target,$token) = @_;
1102: my $currentstring = '';
1103: if ($target eq 'web') {
1104: $currentstring .= $token->[2];
1105: } elsif ($target eq 'tex') {
1106: $currentstring .= '}';
1107: }
1108: return $currentstring;
1109: }
1110:
1111: #-- <p> tag (end tag optional)
1112: #optional attribute - align="center|left|right"
1113: sub start_p {
1114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1115: my $currentstring = '';
1116: if ($target eq 'web') {
1117: $currentstring .= $token->[4];
1118: } elsif ($target eq 'tex') {
1119: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1120: if ($align eq 'center') {
1121: $currentstring='\begin{center}\par';
1122: } elsif ($align eq 'right') {
1123: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1124: } elsif ($align eq 'left') {
1125: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1126: } else {
1127: $currentstring='\par ';
1128: }
1129: my $signal=1;#<p> does not work inside <b>...</b>
1130: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1131: if (!$signal) {$currentstring = '';}
1132: }
1133: }
1134: return $currentstring;
1135: }
1136:
1137: sub end_p {
1138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1139: my $currentstring = '';
1140: if ($target eq 'web') {
1141: $currentstring .= $token->[2];
1142: } elsif ($target eq 'tex') {
1143: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1144: if (not defined $align) {
1145: $currentstring.='\strut\\\\\strut ';
1146: } elsif ($align eq 'center') {
1147: $currentstring .= '\end{center}';
1148: } elsif ($align eq 'right') {
1149: $currentstring .= '}}';
1150: } elsif ($align eq 'left') {
1151: $currentstring .= '}\hfill}';
1152: }
1153: }
1154: return $currentstring;
1155: }
1156:
1157: #-- <br> tag (end tag forbidden)
1158: sub start_br {
1159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1160: my $currentstring = '';
1161: if ($target eq 'web') {
1162: $currentstring .= $token->[4];
1163: } elsif ($target eq 'tex') {
1164: my @tempo=@$tagstack;
1165: my $signal=0;
1166: for (my $i=$#tempo;$i>=0;$i--) {
1167: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1168: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1169: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1170: $signal=1;
1171: last;
1172: }
1173: }
1174: if ($signal) {
1175: $currentstring .= ' \vskip 0 mm ';
1176: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1177: $currentstring .= '\strut \\\\ \strut ';
1178: }
1179: }
1180: return $currentstring;
1181: }
1182:
1183: sub end_br {
1184: my ($target,$token) = @_;
1185: my $currentstring = '';
1186: if ($target eq 'web') {
1187: $currentstring .= $token->[2];
1188: }
1189: return $currentstring;
1190: }
1191:
1192: #-- <big> tag (end tag required)
1193: sub start_big {
1194: my ($target,$token) = @_;
1195: my $currentstring = '';
1196: if ($target eq 'web') {
1197: $currentstring .= $token->[4];
1198: } elsif ($target eq 'tex') {
1199: $currentstring .= '{\large ';
1200: }
1201: return $currentstring;
1202: }
1203:
1204: sub end_big {
1205: my ($target,$token) = @_;
1206: my $currentstring = '';
1207: if ($target eq 'web') {
1208: $currentstring .= $token->[2];
1209: } elsif ($target eq 'tex') {
1210: $currentstring .= '}';
1211: }
1212: return $currentstring;
1213: }
1214:
1215: #-- <small> tag (end tag required)
1216: sub start_small {
1217: my ($target,$token) = @_;
1218: my $currentstring = '';
1219: if ($target eq 'web') {
1220: $currentstring .= $token->[4];
1221: } elsif ($target eq 'tex') {
1222: $currentstring .= '{\footnotesize ';
1223: }
1224: return $currentstring;
1225: }
1226:
1227: sub end_small {
1228: my ($target,$token) = @_;
1229: my $currentstring = '';
1230: if ($target eq 'web') {
1231: $currentstring .= $token->[2];
1232: } elsif ($target eq 'tex') {
1233: $currentstring .= '}';
1234: }
1235: return $currentstring;
1236: }
1237:
1238: #-- <basefont> tag (end tag forbidden)
1239: sub start_basefont {
1240: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1241: my $currentstring = '';
1242: if ($target eq 'web') {
1243: $currentstring = $token->[4];
1244: } elsif ($target eq 'tex') {
1245: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1246: if (defined $basesize) {
1247: $currentstring = '{\\'.$basesize.' ';
1248: }
1249: }
1250: return $currentstring;
1251: }
1252:
1253: sub end_basefont {
1254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1255: my $currentstring = '';
1256: if ($target eq 'web') {
1257: $currentstring = $token->[4];
1258: } elsif ($target eq 'tex') {
1259: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1260: if (defined $basesize) {
1261: $currentstring = '}';
1262: }
1263: }
1264: return $currentstring;
1265: }
1266:
1267: #-- <font> tag (end tag required)
1268: sub start_font {
1269: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1270: my $currentstring = '';
1271: if ($target eq 'web') {
1272: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1273: if ($face!~/symbol/i) {
1274: if (($ENV{'browser.fontenhance'} eq 'on') ||
1275: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1276: }
1277: $currentstring = $token->[4];
1278: } elsif ($target eq 'tex') {
1279: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1280: if (defined $fontsize) {
1281: $currentstring = '{\\'.$fontsize.' ';
1282: }
1283: }
1284: return $currentstring;
1285: }
1286:
1287: sub end_font {
1288: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1289: my $currentstring = '';
1290: if ($target eq 'web') {
1291: $currentstring = $token->[2];
1292: } elsif ($target eq 'tex') {
1293: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1294: if (defined $fontsize) {
1295: $currentstring = '}';
1296: }
1297: }
1298: return $currentstring;
1299: }
1300:
1301: #-- <strike> tag (end tag required)
1302: sub start_strike {
1303: my ($target,$token) = @_;
1304: my $currentstring = '';
1305: if ($target eq 'web') {
1306: $currentstring .= $token->[4];
1307: } elsif ($target eq 'tex') {
1308: &Apache::lonxml::startredirection();
1309: }
1310: return $currentstring;
1311: }
1312:
1313: sub end_strike {
1314: my ($target,$token) = @_;
1315: my $currentstring = '';
1316: if ($target eq 'web') {
1317: $currentstring .= $token->[2];
1318: } elsif ($target eq 'tex') {
1319: $currentstring=&Apache::lonxml::endredirection();
1320: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1321: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1322: $currentstring=~s/(\S)\s*$/$1\}/;
1323: }
1324: return $currentstring;
1325: }
1326:
1327: #-- <s> tag (end tag required)
1328: sub start_s {
1329: my ($target,$token) = @_;
1330: my $currentstring = '';
1331: if ($target eq 'web') {
1332: $currentstring .= $token->[4];
1333: } elsif ($target eq 'tex') {
1334: &Apache::lonxml::startredirection();
1335: }
1336: return $currentstring;
1337: }
1338:
1339: sub end_s {
1340: my ($target,$token) = @_;
1341: my $currentstring = '';
1342: if ($target eq 'web') {
1343: $currentstring .= $token->[2];
1344: } elsif ($target eq 'tex') {
1345: $currentstring=&Apache::lonxml::endredirection();
1346: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1347: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1348: $currentstring=~s/(\S)\s*$/$1\}/;
1349: }
1350: return $currentstring;
1351: }
1352:
1353: #-- <sub> tag (end tag required)
1354: sub start_sub {
1355: my ($target,$token) = @_;
1356: my $currentstring = '';
1357: if ($target eq 'web') {
1358: $currentstring .= $token->[4];
1359: } elsif ($target eq 'tex') {
1360: $currentstring .= '\ensuremath{_{';
1361: }
1362: return $currentstring;
1363: }
1364:
1365: sub end_sub {
1366: my ($target,$token) = @_;
1367: my $currentstring = '';
1368: if ($target eq 'web') {
1369: $currentstring .= $token->[2];
1370: } elsif ($target eq 'tex') {
1371: $currentstring .= '}}';
1372: }
1373: return $currentstring;
1374: }
1375:
1376: #-- <sup> tag (end tag required)
1377: sub start_sup {
1378: my ($target,$token) = @_;
1379: my $currentstring = '';
1380: if ($target eq 'web') {
1381: $currentstring .= $token->[4];
1382: } elsif ($target eq 'tex') {
1383: $currentstring .= '\ensuremath{^{';
1384: }
1385: return $currentstring;
1386: }
1387:
1388: sub end_sup {
1389: my ($target,$token) = @_;
1390: my $currentstring = '';
1391: if ($target eq 'web') {
1392: $currentstring .= $token->[2];
1393: } elsif ($target eq 'tex') {
1394: $currentstring .= '}}';
1395: }
1396: return $currentstring;
1397: }
1398:
1399: #-- <hr> tag (end tag forbidden)
1400: sub start_hr {
1401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1402: my $currentstring = '';
1403: if ($target eq 'web') {
1404: $currentstring .= $token->[4];
1405: } elsif ($target eq 'tex') {
1406: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1407: if (defined $LaTeXwidth) {
1408: if ($LaTeXwidth=~/^%/) {
1409: substr($LaTeXwidth,0,1)='';
1410: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1411: }
1412: } else {
1413: $LaTeXwidth ='0.9\textwidth';
1414: }
1415: my ($pre,$post);
1416: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1417: if (($align eq 'center') || (not defined $align)) {
1418: $pre=''; $post='';
1419: } elsif ($align eq 'left') {
1420: $pre='\rlap{'; $post='} \hfill';
1421: } elsif ($align eq 'right') {
1422: $pre=' \hfill \llap{'; $post='}';
1423: }
1424: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1425: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1426: }
1427: return $currentstring;
1428: }
1429:
1430: sub end_hr {
1431: my ($target,$token) = @_;
1432: my $currentstring = '';
1433: if ($target eq 'web') {
1434: $currentstring .= $token->[2];
1435: }
1436: return $currentstring;
1437: }
1438:
1439: #-- <div> tag (end tag required)
1440: sub start_div {
1441: my ($target,$token) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web') {
1444: $currentstring .= $token->[4];
1445: }
1446: return $currentstring;
1447: }
1448:
1449: sub end_div {
1450: my ($target,$token) = @_;
1451: my $currentstring = '';
1452: if ($target eq 'web') {
1453: $currentstring .= $token->[2];
1454: }
1455: return $currentstring;
1456: }
1457:
1458: #-- <a> tag (end tag required)
1459: sub start_a {
1460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1461: my $currentstring = '';
1462: if ($target eq 'web') {
1463: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1464: undef,1);
1465: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1466: } elsif ($target eq 'tex') {
1467: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1468: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1469: if ($a=~/\S/) {
1470: $a=~s/([^\\])%/$1\\\%/g;
1471: $currentstring .= '\ref{URI: '.$a.'}';
1472: } elsif ($b=~/\S/) {
1473: $currentstring .= '\ref{Anchor: '.$b.'}';
1474: } else {
1475: $currentstring.='';
1476: }
1477: }
1478: return $currentstring;
1479: }
1480:
1481: sub end_a {
1482: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1483: my $currentstring = '';
1484: if ($target eq 'web') {
1485: $currentstring .= $token->[2];
1486: }
1487: return $currentstring;
1488: }
1489:
1490: #-- <li> tag (end tag optional)
1491: sub start_li {
1492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1493: my $currentstring = '';
1494: if ($target eq 'web') {
1495: $currentstring = $token->[4];
1496: } elsif ($target eq 'tex') {
1497: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1498: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1499: #FIXME need to support types i and I
1500: if ($type=~/disc/) {
1501: $currentstring .= ' \item[$\bullet$] ';
1502: } elsif ($type=~/circle/) {
1503: $currentstring .= ' \item[$\circ$] ';
1504: } elsif ($type=~/square/) {
1505: $currentstring .= ' \item[$\diamond$] ';
1506: } elsif ($type eq '1') {
1507: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1508: } elsif ($type eq 'A') {
1509: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1510: } elsif ($type eq 'a') {
1511: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1512: } elsif ($value ne '') {
1513: $currentstring .= ' \item['.$value.'] ';
1514: } else {
1515: $currentstring .= ' \item ';
1516: }
1517: $Apache::londefdef::list_index++;
1518: }
1519: return $currentstring;
1520: }
1521:
1522: sub end_li {
1523: my ($target,$token) = @_;
1524: my $currentstring = '';
1525: if ($target eq 'web') {
1526: $currentstring = $token->[2];
1527: }
1528: return $currentstring;
1529: }
1530:
1531: #-- <u> tag (end tag required)
1532: sub start_u {
1533: my ($target,$token) = @_;
1534: my $currentstring = '';
1535: if ($target eq 'web') {
1536: $currentstring .= $token->[4];
1537: } elsif ($target eq 'tex') {
1538: &Apache::lonxml::startredirection();
1539: }
1540: return $currentstring;
1541: }
1542:
1543: sub end_u {
1544: my ($target,$token) = @_;
1545: my $currentstring = '';
1546: if ($target eq 'web') {
1547: $currentstring .= $token->[2];
1548: } elsif ($target eq 'tex') {
1549: $currentstring=&Apache::lonxml::endredirection();
1550: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1551: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1552: $currentstring=~s/(\S)\s*$/$1\}/;
1553: }
1554: return $currentstring;
1555: }
1556:
1557: #-- <ul> tag (end tag required)
1558: sub start_ul {
1559: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1560: my $currentstring = '';
1561: if ($target eq 'web') {
1562: $currentstring = $token->[4];
1563: } elsif ($target eq 'tex') {
1564: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1565: $Apache::londefdef::list_index=0;
1566: if ($TeXtype eq 'disc') {
1567: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1568: '\renewcommand{\labelitemii}{$\bullet$}'.
1569: '\renewcommand{\labelitemiii}{$\bullet$}'.
1570: '\renewcommand{\labelitemiv}{$\bullet$}';
1571: } elsif ($TeXtype eq 'circle') {
1572: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1573: '\renewcommand{\labelitemii}{$\circ$}'.
1574: '\renewcommand{\labelitemiii}{$\circ$}'.
1575: '\renewcommand{\labelitemiv}{$\circ$}';
1576: } elsif ($TeXtype eq 'square') {
1577: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1578: '\renewcommand{\labelitemii}{$\diamond$}'.
1579: '\renewcommand{\labelitemiii}{$\diamond$}'.
1580: '\renewcommand{\labelitemiv}{$\diamond$}';
1581: }
1582: $currentstring .= '\strut \begin{itemize}';
1583: }
1584: return $currentstring;
1585: }
1586:
1587: sub end_ul {
1588: my ($target,$token) = @_;
1589: my $currentstring = '';
1590: if ($target eq 'web') {
1591: $currentstring = $token->[2];
1592: } elsif ($target eq 'tex') {
1593: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1594: '\renewcommand{\labelitemii}{$\bullet$}'.
1595: '\renewcommand{\labelitemiii}{$\bullet$}'.
1596: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1597: }
1598: return $currentstring;
1599: }
1600:
1601: #-- <menu> tag (end tag required)
1602: sub start_menu {
1603: my ($target,$token) = @_;
1604: my $currentstring = '';
1605: if ($target eq 'web') {
1606: $currentstring = $token->[4];
1607: } elsif ($target eq 'tex') {
1608: $currentstring = " \\begin{itemize} ";
1609: }
1610: return $currentstring;
1611: }
1612:
1613: sub end_menu {
1614: my ($target,$token) = @_;
1615: my $currentstring = '';
1616: if ($target eq 'web') {
1617: $currentstring = $token->[2];
1618: } elsif ($target eq 'tex') {
1619: $currentstring = " \\end{itemize}";
1620: }
1621: return $currentstring;
1622: }
1623:
1624: #-- <dir> tag (end tag required)
1625: sub start_dir {
1626: my ($target,$token) = @_;
1627: my $currentstring = '';
1628: if ($target eq 'web') {
1629: $currentstring = $token->[4];
1630: } elsif ($target eq 'tex') {
1631: $currentstring = " \\begin{itemize} ";
1632: }
1633: return $currentstring;
1634: }
1635:
1636: sub end_dir {
1637: my ($target,$token) = @_;
1638: my $currentstring = '';
1639: if ($target eq 'web') {
1640: $currentstring = $token->[2];
1641: } elsif ($target eq 'tex') {
1642: $currentstring = " \\end{itemize}";
1643: }
1644: return $currentstring;
1645: }
1646:
1647: #-- <ol> tag (end tag required)
1648: sub start_ol {
1649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1650: my $currentstring = '';
1651: if ($target eq 'web') {
1652: $currentstring = $token->[4];
1653: } elsif ($target eq 'tex') {
1654: $Apache::londefdef::list_index=0;
1655: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1656: if ($type eq '1') {
1657: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1658: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1659: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1660: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1661: } elsif ($type eq 'A') {
1662: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1663: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1664: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1665: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1666: } elsif ($type eq 'a') {
1667: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1668: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1669: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1670: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1671: } elsif ($type eq 'i') {
1672: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1673: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1674: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1675: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1676: } elsif ($type eq 'I') {
1677: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1678: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1679: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1680: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1681: }
1682: $currentstring .= '\strut \begin{enumerate}';
1683: }
1684: return $currentstring;
1685: }
1686:
1687: sub end_ol {
1688: my ($target,$token) = @_;
1689: my $currentstring = '';
1690: if ($target eq 'web') {
1691: $currentstring = $token->[2];
1692: } elsif ($target eq 'tex') {
1693: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1694: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1695: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1696: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1697: }
1698: return $currentstring;
1699: }
1700:
1701: #-- <dl> tag (end tag required)
1702: sub start_dl {
1703: my ($target,$token) = @_;
1704: my $currentstring = '';
1705: if ($target eq 'web') {
1706: $currentstring = $token->[4];
1707: } elsif ($target eq 'tex') {
1708: $currentstring = '\begin{description}';
1709: $Apache::londefdef::DL++;
1710: push(@Apache::londefdef::description,[]);
1711: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1712: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1713: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1714: }
1715: return $currentstring;
1716: }
1717:
1718: sub end_dl {
1719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1720: my $currentstring = '';
1721: if ($target eq 'web') {
1722: $currentstring = $token->[2];
1723: } elsif ($target eq 'tex') {
1724: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1725: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1726: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1727: $currentstring.=' '.$element.' ';
1728: }
1729: pop(@Apache::londefdef::description);
1730: $currentstring.='\end{description}';
1731: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1732: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1733: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1734: $Apache::londefdef::DL--;
1735: }
1736: return $currentstring;
1737: }
1738:
1739: #-- <dt> tag (end tag optional)
1740: sub start_dt {
1741: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1742: my $currentstring='';
1743: if ($target eq 'web') {
1744: $currentstring = $token->[4];
1745: } elsif ($target eq 'tex') {
1746: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1747: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1748: &Apache::lonxml::startredirection();
1749: $Apache::londefdef::DT[-1]++;
1750: $Apache::londefdef::seenDT[-1]=1;
1751: }
1752: return $currentstring;
1753: }
1754:
1755: sub end_dt {
1756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1757: my $currentstring = '';
1758: if ($target eq 'web') {
1759: $currentstring = $token->[2];
1760: } elsif ($target eq 'tex') {
1761: if ($Apache::londefdef::DT[-1]) {
1762: my $data=&item_cleanup();
1763: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1764: $Apache::londefdef::DT[-1]--;
1765: }
1766: }
1767: return $currentstring;
1768: }
1769:
1770: sub item_cleanup {
1771: my $item=&Apache::lonxml::endredirection();
1772: $item=~s/\\begin{center}//g;
1773: $item=~s/\\end{center}//g;
1774: return $item;
1775: }
1776:
1777: #-- <dd> tag (end tag optional)
1778: sub start_dd {
1779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1780: my $currentstring = '';
1781: if ($target eq 'web') {
1782: $currentstring = $token->[4];
1783: } elsif ($target eq 'tex') {
1784: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1785: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1786: if (!$Apache::londefdef::seenDT[-1]) {
1787: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1788: }
1789: push(@{$Apache::londefdef::description[-1]},'');
1790: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1791: $Apache::londefdef::DD[-1]++;
1792: &Apache::lonxml::startredirection();
1793: }
1794: return $currentstring;
1795: }
1796:
1797: sub end_dd {
1798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1799: my $currentstring = '';
1800: if ($target eq 'web') {
1801: $currentstring = $token->[2];
1802: } elsif ($target eq 'tex') {
1803: $Apache::londefdef::description[-1]->[-1].=
1804: &Apache::lonxml::endredirection().' \vskip 0mm ';
1805: $Apache::londefdef::DD[-1]--;
1806: }
1807: return $currentstring;
1808: }
1809:
1810: #-- <table> tag (end tag required)
1811: #list of supported attributes: border,width,TeXwidth
1812: sub start_table {
1813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1814: my ($textwidth,$currentstring)=('','');
1815: if ($target eq 'web') {
1816: $currentstring = $token->[4];
1817: } elsif ($target eq 'tex') {
1818: my $aa = {};
1819: push @Apache::londefdef::table, $aa;
1820: $Apache::londefdef::table[-1]{'row_number'} = -1;
1821: #maximum table's width (default coincides with text line length)
1822: if ($#Apache::londefdef::table==0) {
1823: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1824: $textwidth=~/(\d+\.?\d*)/;
1825: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1826: } else {
1827: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1828: #the maximum width of nested table is determined by LATeX width of parent cell
1829: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1830: } else {
1831: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1832: $textwidth=$Apache::londefdef::table[-2]{'width'};
1833: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1834: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1835: }
1836: }
1837: }
1838: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1839: if (not defined $TeXwidth) {
1840: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1841: if ($htmlwidth=~/%/) {
1842: $Apache::londefdef::table[-1]{'percent'}=1;
1843: $htmlwidth=~/(\d+)/;
1844: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1845: } else {
1846: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1847: }
1848: } elsif ($TeXwidth=~/%/) {
1849: $Apache::londefdef::table[-1]{'percent'}=1;
1850: $TeXwidth=~/(\d+)/;
1851: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1852: } else {
1853: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1854: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1855: }
1856: #table's border
1857: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1858: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1859: unless (defined $border) { $border = 0; }
1860: if ($border) {
1861: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1862: $Apache::londefdef::table[-1]{'vinc'} = '&';
1863: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1864: } else {
1865: $Apache::londefdef::table[-1]{'hinc'} = '';
1866: $Apache::londefdef::table[-1]{'vinc'} = '&';
1867: $Apache::londefdef::table[-1]{'vvinc'} = '';
1868: }
1869: if ($#Apache::londefdef::table==0) {
1870: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1871: }
1872: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1873: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1874: $Apache::londefdef::table[-1]{'objectlen'}=[];
1875: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1876: $Apache::londefdef::table[-1]{'maxlen'}=[];
1877: $Apache::londefdef::table[-1]{'minlen'}=[];
1878: $Apache::londefdef::table[-1]{'content'}=[];
1879: $Apache::londefdef::table[-1]{'align'}=[];
1880: $currentstring='\keephidden{NEW TABLE ENTRY}';
1881: }
1882: return $currentstring;
1883: }
1884:
1885: sub end_table {
1886: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1887: my $currentstring = '';
1888: if ($target eq 'web') {
1889: $currentstring = $token->[2];
1890: } elsif ($target eq 'tex') {
1891: my $inmemory = '';
1892: my $output = '';
1893: my $WARNING='';
1894: #width of columns from TeXwidth attributes
1895: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1896: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1897: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1898: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1899: }
1900: }
1901: }
1902: #free space and number of empty columns
1903: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1904: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1905: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1906: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1907: $empty_columns++;
1908: } else {
1909: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1910: }
1911: }
1912: #boundaries for contents columns
1913: my @min_len=();#columns can not be narrower
1914: my @max_len=();#maximum length of column
1915: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1916: my ($localmin,$localmax)=(0,0);
1917: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1918: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1919: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1920: }
1921: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1922: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1923: }
1924: }
1925: push @min_len, $localmin;
1926: push @max_len, $localmax;
1927: }
1928: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1929: my $localmin=0,;
1930: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1931: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1932: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1933: }
1934: }
1935: if ($max_len[$jn]<$localmin) {
1936: $max_len[$jn]=$localmin;
1937: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1938: }#object size is bigger
1939: if ($min_len[$jn]<$localmin) {
1940: $min_len[$jn]=$localmin;
1941: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1942: }#object size is bigger
1943: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1944: $min_len[$jn]=0;
1945: $max_len[$jn]=0;
1946: }
1947: }
1948: #final adjustment of column width
1949: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1950: my @adjust=();
1951: #step 1. adjustment by maximum value
1952: my $space_neeeded=0;
1953: for (my $jn=0;$jn<=$#max_len;$jn++) {
1954: $space_neeeded=$space_neeeded+$max_len[$jn];
1955: }
1956: if ($space_neeeded<=$available_space) {
1957: for (my $jn=0;$jn<=$#max_len;$jn++) {
1958: if ($fwidth[$jn]==0) {
1959: $fwidth[$jn]=$max_len[$jn];
1960: }
1961: }
1962: } else {
1963: #step 2. adjustment by minimum value (estimation)
1964: $space_neeeded=0;
1965: for (my $jn=0;$jn<=$#min_len;$jn++) {
1966: $space_neeeded+=$min_len[$jn];
1967: }
1968: if ($space_neeeded>$available_space) {
1969: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1970: for (my $jn=0;$jn<=$#max_len;$jn++) {
1971: if ($fwidth[$jn]==0) {
1972: $fwidth[$jn]=$min_len[$jn];
1973: }
1974: }
1975: #check if we have objects which can be scaled
1976: my $how_many_to_scale=0;
1977: my @to_scale=();
1978: for (my $jn=0;$jn<=$#max_len;$jn++) {
1979: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1980: $how_many_to_scale++;
1981: push @to_scale, $jn;
1982: }
1983: }
1984: if ($how_many_to_scale>0) {
1985: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1986: foreach my $jn (@to_scale) {
1987: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1988: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1989: if ($1 ne '') {
1990: my $current_length=&recalc($1);
1991: $current_length=~/(\d+\.?\d*)/;
1992: $current_length=$current_length-$space_to_adjust;
1993: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1994: }
1995: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1996: if ($1 ne '') {
1997: my $current_length=$1;
1998: $current_length=$current_length-$space_to_adjust;
1999: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2000: }
2001: }
2002: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2003: }
2004: }
2005: } else {
2006: #step 3. adjustment over minimal + corrections
2007: my $enlarge_coef=$available_space/$space_neeeded;
2008: my $acsessive=0;
2009: for (my $jn=0;$jn<=$#min_len;$jn++) {
2010: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2011: if ($adjust[$jn]>$max_len[$jn]) {
2012: $fwidth[$jn]=$max_len[$jn];
2013: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2014: $adjust[$jn]=0;
2015: }
2016: }
2017: if ($acsessive>0) {
2018: #we have an excess of space and can redistribute it
2019: my $notempty_columns=0;
2020: for (my $jn=0;$jn<=$#min_len;$jn++) {
2021: if ($adjust[$jn]!=0) {
2022: $notempty_columns++;
2023: }
2024: }
2025: my $per_column=$acsessive/$notempty_columns;
2026: for (my $jn=0;$jn<=$#min_len;$jn++) {
2027: if ($adjust[$jn]!=0) {
2028: $adjust[$jn]+=$per_column;
2029: $fwidth[$jn]=$adjust[$jn];
2030: }
2031: }
2032: } else {
2033: for (my $jn=0;$jn<=$#min_len;$jn++) {
2034: $fwidth[$jn]=$adjust[$jn];
2035: }
2036: }
2037: }
2038: }
2039: #use all available width if it is defined in % or as TeXwidth
2040: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2041: my $current=0;
2042: for (my $i=0;$i<=$#fwidth;$i++) {
2043: $current+=$fwidth[$i];
2044: }
2045: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2046: for (my $i=0;$i<=$#fwidth;$i++) {
2047: $fwidth[$i]*=$coef;
2048: }
2049: }
2050: #removing of empty columns if allowed
2051: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2052: if ($permission eq 'yes') {
2053: my @cleaned_table=();
2054: my @cleaned_header=();
2055: my $colind=0;
2056: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2057: if ($fwidth[$jn]!=0) {
2058: #we need to copy column
2059: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2060: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2061: $cleaned_header[$colind]=$fwidth[$jn];
2062: }
2063: $colind++;
2064: }
2065: }
2066: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2067: @fwidth=@cleaned_header;
2068: }
2069: #construct header of the table
2070: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2071: for (my $in=0;$in<=$#fwidth;$in++) {
2072: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2073: }
2074: $header_of_table .= '}';
2075: #fill the table
2076: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2077: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2078: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2079: $output.='\vspace*{-6 mm}\begin{center}';
2080: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2081: $output.=' \hfill \llap{'
2082: }
2083: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2084: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2085: $output.='\end{center}\vspace*{-6 mm}';
2086: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2087: $output.='} ';
2088: }
2089: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2090: }
2091: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2092: }
2093: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2094: if ($#Apache::londefdef::table > 0) {
2095: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2096: pop @Apache::londefdef::table;
2097: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2098: } else {
2099: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2100: pop @Apache::londefdef::table;
2101: undef @Apache::londefdef::table;
2102: }
2103: }
2104: return $currentstring;
2105: }
2106:
2107: #-- <tr> tag (end tag optional)
2108: sub start_tr {
2109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2110: my $currentstring = '';
2111: if ($target eq 'web') {
2112: $currentstring = $token->[4];
2113: } elsif ($target eq 'tex') {
2114: $Apache::londefdef::table[-1]{'row_number'}++;
2115: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2116: if ($alignchar ne '') {
2117: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2118: } else {
2119: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2120: }
2121: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2122: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2123: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2124: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2125: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2126: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2127: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2128: }
2129: return $currentstring;
2130: }
2131:
2132: sub end_tr {
2133: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2134: my $currentstring = '';
2135: if ($target eq 'web') {
2136: $currentstring = $token->[2];
2137: } elsif ($target eq 'tex') {
2138: if ($Apache::londefdef::TD_redirection) {
2139: &end_td_tex($parstack,$parser,$safeeval);
2140: }
2141: }
2142: return $currentstring;
2143: }
2144:
2145: #-- <td> tag (end tag optional)
2146: sub start_td {
2147: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2148: my $currentstring = '';
2149: if ($target eq 'web') {
2150: $currentstring = $token->[4];
2151: } elsif ($target eq 'tex') {
2152: $Apache::londefdef::TD_redirection = 1;
2153: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2154: }
2155: return $currentstring;
2156: }
2157:
2158: sub tag_check {
2159: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2160: my @ar=@$parstack;
2161: for (my $i=$#ar-1;$i>=0;$i--) {
2162: if (lc($$tagstack[$i]) eq $good_tag) {
2163: &start_td_tex($parstack,$parser,$safeeval);
2164: last;
2165: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2166: splice @ar, $i+1;
2167: &end_td_tex(\@ar,$parser,$safeeval);
2168: &start_td_tex($parstack,$parser,$safeeval);
2169: last;
2170: }
2171: }
2172: return '';
2173: }
2174:
2175: sub start_td_tex {
2176: my ($parstack,$parser,$safeeval) = @_;
2177: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2178: if ($alignchar eq '') {
2179: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2180: }
2181: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2182: $Apache::londefdef::table[-1]{'counter_columns'}++;
2183: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2184: if (defined $TeXwidth) {
2185: my $current_length=&recalc($TeXwidth);
2186: $current_length=~/(\d+\.?\d*)/;
2187: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2188: }
2189: &Apache::lonxml::startredirection();
2190: return '';
2191: }
2192:
2193: sub end_td_tex {
2194: my ($parstack,$parser,$safeeval) = @_;
2195: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2196: my $data=&Apache::lonxml::endredirection();
2197: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2198: if (defined $TeXwidth) {
2199: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2200: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2201: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2202: } else {
2203: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2204: my $garbage_data=$data;
2205: my $fwidth=0;
2206: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2207: my $current_length=&recalc($1);
2208: $current_length=~/(\d+\.?\d*)/;
2209: if ($fwidth<$1) {$fwidth=$1;}
2210: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2211: }
2212: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2213: my $current_length=$1;
2214: if ($fwidth<$current_length) {$fwidth=$current_length;}
2215: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2216: }
2217: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2218: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2219: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2220: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2221: } elsif ($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)*/) {
2222: my $garbage_data=$data;
2223: my $fwidth=0;
2224: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2225: my $current_length=&recalc($1);
2226: $current_length=~/(\d+\.?\d*)/;
2227: if ($fwidth<$1) {$fwidth=$1;}
2228: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2229: }
2230: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2231: my $current_length=&recalc($1);
2232: $current_length=~/(\d+\.?\d*)/;
2233: if ($fwidth<$1) {$fwidth=$1;}
2234: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2235: }
2236: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2237: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2238: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2239: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2240: $data=~s/\\\\\s*$//;
2241: } else {
2242: $data=~s/^\s+(\S.*)/$1/;
2243: $data=~s/(.*\S)\s+$/$1/;
2244: $data=~s/(\s)+/$1/;
2245: my ($current_length,$min_length)=(0,0);
2246: if ($data=~/\\vskip/) {
2247: my $newdata=$data;
2248: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2249: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2250: foreach my $elementdata (@newdata) {
2251: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2252: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2253: my @words=split(/ /,$elementdata);
2254: foreach my $word (@words) {
2255: my $lengthword=2.5*&LATEX_length($word);
2256: if ($min_length<$lengthword) {$min_length=$lengthword;}
2257: }
2258: }
2259: } else {
2260: $current_length=2.5*&LATEX_length($data);
2261: my @words=split(/ /,$data);
2262: foreach my $word (@words) {
2263: my $lengthword=2*&LATEX_length($word);
2264: if ($min_length<$lengthword) {$min_length=$lengthword;}
2265: }
2266: }
2267: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2268: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2269: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2270: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2271: }
2272: }
2273: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2274: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2275: }
2276: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2277: return'';
2278: }
2279:
2280: sub end_td {
2281: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2282: my $currentstring = '';
2283: if ($target eq 'web') {
2284: $currentstring = $token->[2];
2285: } elsif ($target eq 'tex') {
2286: $Apache::londefdef::TD_redirection =0;
2287: &end_td_tex($parstack,$parser,$safeeval);
2288: }
2289: return $currentstring;
2290: }
2291:
2292: #-- <th> tag (end tag optional)
2293: sub start_th {
2294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2295: my $currentstring = '';
2296: if ($target eq 'web') {
2297: $currentstring = $token->[4];
2298: } elsif ($target eq 'tex') {
2299: $Apache::londefdef::TD_redirection = 1;
2300: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2301: }
2302: return $currentstring;
2303: }
2304:
2305: sub tagg_check {
2306: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2307: my @ar=@$parstack;
2308: for (my $i=$#ar-1;$i>=0;$i--) {
2309: if (lc($$tagstack[$i]) eq $good_tag) {
2310: &start_th_tex($parstack,$parser,$safeeval);
2311: last;
2312: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2313: splice @ar, $i+1;
2314: &end_th_tex(\@ar,$parser,$safeeval);
2315: &start_th_tex($parstack,$parser,$safeeval);
2316: last;
2317: }
2318: }
2319: return '';
2320: }
2321:
2322: sub start_th_tex {
2323: my ($parstack,$parser,$safeeval) = @_;
2324: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2325: if ($alignchar eq '') {
2326: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2327: }
2328: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2329: $Apache::londefdef::table[-1]{'counter_columns'}++;
2330: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2331: if (defined $TeXwidth) {
2332: my $current_length=&recalc($TeXwidth);
2333: $current_length=~/(\d+\.?\d*)/;
2334: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2335: }
2336: &Apache::lonxml::startredirection();
2337: return '';
2338: }
2339:
2340: sub end_th_tex {
2341: my ($parstack,$parser,$safeeval) = @_;
2342: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2343: my $data=&Apache::lonxml::endredirection();
2344: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2345: if (defined $TeXwidth) {
2346: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2347: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2348: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2349: } else {
2350: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2351: my $garbage_data=$data;
2352: my $fwidth=0;
2353: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2354: my $current_length=&recalc($1);
2355: $current_length=~/(\d+\.?\d*)/;
2356: if ($fwidth<$1) {$fwidth=$1;}
2357: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2358: }
2359: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2360: my $current_length=$1;
2361: if ($fwidth<$current_length) {$fwidth=$current_length;}
2362: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2363: }
2364: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2365: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2366: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2367: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2368: } else {
2369: $data=~s/^\s+(\S.*)/$1/;
2370: $data=~s/(.*\S)\s+$/$1/;
2371: $data=~s/(\s)+/$1/;
2372: my ($current_length,$min_length)=(0,0);
2373: if ($data=~/\\vskip/) {
2374: my $newdata=$data;
2375: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2376: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2377: foreach my $elementdata (@newdata) {
2378: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2379: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2380: my @words=split(/ /,$elementdata);
2381: foreach my $word (@words) {
2382: my $lengthword=2.5*&LATEX_length($word);
2383: if ($min_length<$lengthword) {$min_length=$lengthword;}
2384: }
2385: }
2386: } else {
2387: $current_length=2.5*&LATEX_length($data);
2388: my @words=split(/ /,$data);
2389: foreach my $word (@words) {
2390: my $lengthword=2*&LATEX_length($word);
2391: if ($min_length<$lengthword) {$min_length=$lengthword;}
2392: }
2393: }
2394: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2395: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2396: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2397: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2398: }
2399: }
2400: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2401: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2402: }
2403: #make data bold
2404: $data='\textbf{'.$data.'}';
2405: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2406: return'';
2407: }
2408:
2409: sub end_th {
2410: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2411: my $currentstring = '';
2412: if ($target eq 'web') {
2413: $currentstring = $token->[2];
2414: } elsif ($target eq 'tex') {
2415: $Apache::londefdef::TD_redirection =0;
2416: &end_th_tex($parstack,$parser,$safeeval);
2417: }
2418: return $currentstring;
2419: }
2420:
2421: #-- <img> tag (end tag forbidden)
2422: #
2423: # Render the <IMG> tag.
2424: # <IMG> has the following attributes (in addition to the
2425: # standard HTML ones:
2426: # TeXwrap - Governs how the tex target will try to wrap text around
2427: # horizontally aligned images.
2428: # TeXwidth - The width of the image when rendered for print (mm).
2429: # TeXheight - The height of the image when rendered for print (mm)
2430: # (Note there seems to also be support for this as a % of page size)
2431: #
2432: sub start_img {
2433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2434: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2435: undef,1);
2436: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2437: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2438: return '';
2439: }
2440: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2441: my $currentstring = '';
2442: my $scaling = .3;
2443:
2444: # Render unto browsers that which are the browser's...
2445:
2446: if ($target eq 'web') {
2447: if ($ENV{'browser.imagesuppress'} ne 'on') {
2448: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2449: } else {
2450: my $alttag= &Apache::lonxml::get_param
2451: ('alt',$parstack,$safeeval,undef,1);
2452: unless ($alttag) {
2453: $alttag=&Apache::lonmeta::alttag
2454: ($Apache::lonxml::pwd[-1],$src);
2455: }
2456: $currentstring.='[IMAGE: '.$alttag.']';
2457: }
2458:
2459: # and render unto TeX that which is LaTeX
2460:
2461: } elsif ($target eq 'tex') {
2462: #
2463: # The alignment will require some superstructure to be put around
2464: # the \includegraphics stuff. At present we can only partially
2465: # simulate the alignments offered by html.
2466: #
2467: #
2468: my $align = lc(&Apache::lonxml::get_param('align',
2469: $parstack,
2470: $safeeval,
2471: undef,1));
2472: if(!$align) {
2473: $align = "bottom"; # This is html's default so it's ours too.
2474: }
2475: #
2476: &Apache::lonxml::debug("Alignemnt = $align");
2477: # LaTeX's image/text wrapping is really bad since it wants to
2478: # make figures float.
2479: # The user has the optional parameter (applicable only to l/r
2480: # alignment to use the picins/parpic directive to get wrapped text
2481: # this is also imperfect.. that's why we give them a choice...
2482: # so they can't yell at us for our choice.
2483: #
2484: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2485: $parstack,
2486: $safeeval,
2487: undef,0);
2488: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2489: if(!$latex_rendering) {
2490: $latex_rendering = "parbox";
2491: }
2492: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2493:
2494: my $oldSRC=$src;
2495: $oldSRC=~s/\.(gif|jpg|png)$/\.eps/;
2496: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2497: #if original gif/jpg/png file exist do following:
2498: if (-e $src) {
2499: #what is the image size?
2500: my $width_param=&image_width($src,$scaling,$parstack,$safeeval);
2501: my $height_param=&image_height($src,$scaling,$parstack,$safeeval);
2502: my ($file,$path)=&file_path($src);
2503: my $newsrc = $src;
2504: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2505: &Apache::lonnet::repcopy($oldSRC);
2506: $file=~s/\.(gif|jpg|png)$/.eps/i;
2507: #where can we find the picture?
2508: if (-e $newsrc) {
2509: #eps counterpart for image exist
2510: if ($path) {
2511: $currentstring .= '\graphicspath{{'.$path.'}}'
2512: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$file.'} ';
2513: }
2514: } else {
2515: #there is no eps counterpart for image - check for ps one
2516: $newsrc =~ s/\.eps$/\.ps/;
2517: if (-e $newsrc) {
2518: #ps counterpart for image exist
2519: $file =~ s/\.eps$/\.ps/;
2520: if ($path) {
2521: $currentstring .= '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2522: }
2523: } else {
2524: #care about eps dynamical generation
2525: $currentstring.=&eps_generation($src,$file,$width_param);
2526: }
2527: }
2528: # If there's an alignment specification we need to honor it here.
2529: # For the horizontal alignments, we will also honor the
2530: # value of the latex specfication. The default is parbox,
2531: # and that's used for illegal values too.
2532: #
2533: # Even though we set a default alignment value, the user
2534: # could have given us an illegal value. In that case we
2535: # just use the default alignment of bottom..
2536: if ($align eq "top") {
2537: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2538: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2539: my $offset = $height_param/2;
2540: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2541: } elsif ($align eq "left") {
2542: if ($latex_rendering eq "parpic") {
2543: $currentstring = '\parpic[l]{'.$currentstring.'}';
2544: } else { # parbox rendering
2545: $currentstring = "\\strut\\newline\n".
2546: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2547: }
2548: } elsif ($align eq "right") {
2549: if ($latex_rendering eq "parpic") {
2550: $currentstring = '\parpic[r]{'.$currentstring.'}';
2551: } else { # parbox rendering.
2552: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2553: .$currentstring.'\end{flushright}} \newline'."\n";
2554: }
2555: } else { # Bottom is also default.
2556: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2557: }
2558: } else {
2559: #original image file doesn't exist so check the alt attribute
2560: my $alt =
2561: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2562: unless ($alt) {
2563: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2564: }
2565:
2566: if ($alt) {
2567: $currentstring .= ' '.$alt.' ';
2568: } else {
2569: #<allow> tag will care about replication
2570: }
2571: }
2572:
2573: # And here's where the semi-quote breaks down: allow the user
2574: # to edit the beast as well by rendering the problem for edit:
2575:
2576:
2577: } elsif ($target eq 'edit') {
2578: $currentstring .=&Apache::edit::tag_start($target,$token);
2579: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2580: &Apache::edit::browse('src',undef,'alt').' '.
2581: &Apache::edit::search('src',undef,'alt').'<br />';
2582: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2583: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2584: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2585: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2586: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2587: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2588: ['','bottom','middle','top','left','right'],$token,5);
2589: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2590: ['', 'parbox', 'parpic'], $token, 2);
2591: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2592: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2593: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2594: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2595: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2596:
2597:
2598: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2599: if ($width) { $currentstring.=' width="'.$width.'" '; }
2600: if ($height) { $currentstring.=' height="'.$height.'" '; }
2601: $currentstring .= ' />';
2602: } elsif ($target eq 'modified') {
2603: my ($osrc,$owidth,$oheight)=
2604: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2605: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2606: $safeeval,'src','alt','align',
2607: 'TeXwidth','TeXheight', 'TeXwrap',
2608: 'width','height');
2609: my ($nsrc,$nwidth,$nheight)=
2610: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2611: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2612: &image_replication($loc);
2613: my ($iwidth,$iheight);
2614: if (-e $loc) {
2615: my $image = Image::Magick->new;
2616: $image->Read($loc);
2617: ($iwidth, $iheight) = ($image->Get('width'),
2618: $image->Get('height'));
2619: }
2620: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2621: # changed image or no size specified,
2622: # if they didn't explicitly change the
2623: # width or height use the ones from the image
2624: if ($iwidth && $iheight) {
2625: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2626: $token->[2]{'width'} = $iwidth;$ctag=1;
2627: }
2628: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2629: $token->[2]{'height'}=$iheight;$ctag=1;
2630: }
2631: }
2632: }
2633: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2634: # if we don't have a width or height
2635: if ($iwidth && $cwidth && !$cheight) {
2636: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2637: }
2638: if ($iheight && $cheight && !$cwidth) {
2639: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2640: }
2641: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2642: }
2643: return $currentstring;
2644: }
2645:
2646: sub end_img {
2647: my ($target,$token) = @_;
2648: my $currentstring = '';
2649: if ($target eq 'web') {
2650: $currentstring = $token->[2];
2651: } elsif ($target eq 'tex') {
2652: $currentstring = '';
2653: }
2654: return $currentstring;
2655: }
2656:
2657: #-- <applet> tag (end tag required)
2658: sub start_applet {
2659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2660:
2661: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2662: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2663:
2664: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2665: undef,1);
2666: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2667:
2668: my $currentstring = '';
2669: if ($target eq 'web') {
2670: if ($ENV{'browser.appletsuppress'} ne 'on') {
2671: $currentstring = &Apache::lonenc::encrypt_ref($token,
2672: {'code'=>$code,
2673: 'archive'=>$archive}
2674: );
2675: } else {
2676: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2677: $safeeval,undef,1);
2678: unless ($alttag) {
2679: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2680: $code);
2681: }
2682: $currentstring='[APPLET: '.$alttag.']';
2683: }
2684: } elsif ($target eq 'tex') {
2685: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2686: $safeeval,undef,1);
2687: unless ($alttag) {
2688: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2689: undef,1);
2690: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2691: $code);
2692: }
2693: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2694: '.}\end{center}';
2695: }
2696: return $currentstring;
2697: }
2698:
2699: sub end_applet {
2700: my ($target,$token) = @_;
2701: my $currentstring = '';
2702: if ($target eq 'web') {
2703: $currentstring = $token->[2];
2704: } elsif ($target eq 'tex') {
2705: }
2706: return $currentstring;
2707: }
2708:
2709: #-- <embed> tag (end tag optional/required)
2710: sub start_embed {
2711: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2712: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2713: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2714: my $currentstring = '';
2715: if ($target eq 'web') {
2716: if ($ENV{'browser.embedsuppress'} ne 'on') {
2717: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2718: } else {
2719: my $alttag=&Apache::lonxml::get_param
2720: ('alt',$parstack,$safeeval,undef,1);
2721: unless ($alttag) {
2722: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2723: }
2724: $currentstring='[EMBED: '.$alttag.']';
2725: }
2726: } elsif ($target eq 'tex') {
2727: }
2728: return $currentstring;
2729: }
2730:
2731: sub end_embed {
2732: my ($target,$token) = @_;
2733: my $currentstring = '';
2734: if ($target eq 'web') {
2735: $currentstring = $token->[2];
2736: } elsif ($target eq 'tex') {
2737: }
2738: return $currentstring;
2739: }
2740:
2741: #-- <param> tag (end tag forbidden)
2742: sub start_param {
2743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2744: if (&Apache::lonxml::get_param
2745: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2746: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2747: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2748: }
2749: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2750: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2751: my $currentstring = '';
2752: if ($target eq 'web') {
2753: my %toconvert;
2754: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2755: if ($src) { $toconvert{'src'}= $src; }
2756: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2757: undef,1);
2758: if ($name=~/^cabbase$/i) {
2759: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2760: $safeeval,undef,1);
2761: }
2762: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2763: } elsif ($target eq 'tex') {
2764: }
2765: return $currentstring;
2766: }
2767:
2768: sub end_param {
2769: my ($target,$token) = @_;
2770: my $currentstring = '';
2771: if ($target eq 'web') {
2772: $currentstring = $token->[2];
2773: } elsif ($target eq 'tex') {
2774: }
2775: return $currentstring;
2776: }
2777:
2778: #-- <allow> tag
2779: sub start_allow {
2780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2781: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2782: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2783: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2784: &Apache::lonnet::clutter($src);
2785: if ($target eq 'tex') { &image_replication($src); }
2786: my $result;
2787: if ($target eq 'edit') {
2788: $result .=&Apache::edit::tag_start($target,$token);
2789: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2790: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2791: } elsif ($target eq 'modified') {
2792: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2793: $safeeval,'src');
2794: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2795: }
2796: return $result;
2797: }
2798:
2799: sub end_allow {
2800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2801: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2802: return '';
2803: }
2804:
2805: #-- Frames (end tag required)
2806: #-- <frameset>
2807: sub start_frameset {
2808: my ($target,$token) = @_;
2809: my $currentstring = '';
2810: if ($target eq 'web') {
2811: if (!$Apache::lonxml::registered &&
2812: $ENV{'request.state'} eq 'published') {
2813: $currentstring.='<head>'.
2814: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2815: }
2816: my $onLoad='';
2817: foreach my $key (keys(%{$token->[2]})) {
2818: if ($key =~ /^onload$/i) {
2819: $onLoad.=$token->[2]->{$key}.';';
2820: delete($token->[2]->{$key});
2821: }
2822: }
2823: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2824: my $onUnload='';
2825: foreach my $key (keys(%{$token->[2]})) {
2826: if ($key =~ /^onunload$/i) {
2827: $onUnload.=$token->[2]->{$key}.';';
2828: delete($token->[2]->{$key});
2829: }
2830: }
2831: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2832: ';'.$onUnload;
2833:
2834: $currentstring .= '<'.$token->[1];
2835: foreach (keys %{$token->[2]}) {
2836: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2837: }
2838: $currentstring.='>';
2839: }
2840: return $currentstring;
2841: }
2842:
2843: sub end_frameset {
2844: my ($target,$token) = @_;
2845: my $currentstring = '';
2846: if ($target eq 'web') {
2847: $currentstring = $token->[2];
2848: }
2849: return $currentstring;
2850: }
2851:
2852: #-- <xmp> (end tag required)
2853: sub start_xmp {
2854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2855: my $currentstring = '';
2856: if ($target eq 'web') {
2857: $currentstring .= $token->[4];
2858: } elsif ($target eq 'tex') {
2859: $currentstring .= '\begin{verbatim}';
2860: }
2861: return $currentstring;
2862: }
2863:
2864: sub end_xmp {
2865: my ($target,$token) = @_;
2866: my $currentstring = '';
2867: if ($target eq 'web') {
2868: $currentstring .= $token->[2];
2869: } elsif ($target eq 'tex') {
2870: $currentstring .= '\end{verbatim}';
2871: }
2872: return $currentstring;
2873: }
2874:
2875: #-- <pre> (end tag required)
2876: sub start_pre {
2877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2878: my $currentstring = '';
2879: if ($target eq 'web') {
2880: $currentstring .= $token->[4];
2881: } elsif ($target eq 'tex') {
2882: $currentstring .= '\begin{verbatim}';
2883: }
2884: return $currentstring;
2885: }
2886:
2887: sub end_pre {
2888: my ($target,$token) = @_;
2889: my $currentstring = '';
2890: if ($target eq 'web') {
2891: $currentstring .= $token->[2];
2892: } elsif ($target eq 'tex') {
2893: $currentstring .= '\end{verbatim}';
2894: }
2895: return $currentstring;
2896: }
2897:
2898: #-- <insert>
2899: sub start_insert {
2900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2901: my $currentstring = '';
2902: if ($target eq 'web') {
2903: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2904: $currentstring .= '<b>'.$display.'</b>';;
2905: }
2906: return $currentstring;
2907: }
2908:
2909: sub end_insert {
2910: my ($target,$token) = @_;
2911: my $currentstring = '';
2912: if ($target eq 'web') {
2913: $currentstring .= '';
2914: }
2915: return $currentstring;
2916: }
2917:
2918: #-- <externallink>
2919: sub start_externallink {
2920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2921: my $currentstring = '';
2922: if ($target eq 'web') {
2923: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2924: $currentstring .= '<b>'.$display.'</b>';;
2925: }
2926: return $currentstring;
2927: }
2928:
2929: sub end_externallink {
2930: my ($target,$token) = @_;
2931: my $currentstring = '';
2932: if ($target eq 'web') {
2933: $currentstring .= '';
2934: }
2935: return $currentstring;
2936: }
2937:
2938: #-- <blankspace heigth="">
2939: sub start_blankspace {
2940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2941: my $currentstring = '';
2942: if ($target eq 'tex') {
2943: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2944: $currentstring .= '\vskip '.$howmuch.' ';
2945: }
2946: return $currentstring;
2947: }
2948:
2949: sub end_blankspace {
2950: my ($target,$token) = @_;
2951: my $currentstring = '';
2952: if ($target eq 'tex') {
2953: $currentstring .= '';
2954: }
2955: return $currentstring;
2956: }
2957:
2958: #-- <abbr> tag (end tag required)
2959: sub start_abbr {
2960: my ($target,$token) = @_;
2961: my $currentstring = '';
2962: if ($target eq 'web') {
2963: $currentstring = $token->[4];
2964: }
2965: return $currentstring;
2966: }
2967:
2968: sub end_abbr {
2969: my ($target,$token) = @_;
2970: my $currentstring = '';
2971: if ($target eq 'web') {
2972: $currentstring = $token->[2];
2973: }
2974: return $currentstring;
2975: }
2976:
2977: #-- <acronym> tag (end tag required)
2978: sub start_acronym {
2979: my ($target,$token) = @_;
2980: my $currentstring = '';
2981: if ($target eq 'web') {
2982: $currentstring = $token->[4];
2983: }
2984: return $currentstring;
2985: }
2986:
2987: sub end_acronym {
2988: my ($target,$token) = @_;
2989: my $currentstring = '';
2990: if ($target eq 'web') {
2991: $currentstring = $token->[2];
2992: }
2993: return $currentstring;
2994: }
2995:
2996: #-- <area> tag (end tag forbidden)
2997: sub start_area {
2998: my ($target,$token) = @_;
2999: my $currentstring = '';
3000: if ($target eq 'web') {
3001: $currentstring = $token->[4];
3002: }
3003: return $currentstring;
3004: }
3005:
3006: sub end_area {
3007: my ($target,$token) = @_;
3008: my $currentstring = '';
3009: if ($target eq 'web') {
3010: $currentstring = $token->[2];
3011: }
3012: return $currentstring;
3013: }
3014:
3015: #-- <base> tag (end tag forbidden)
3016: sub start_base {
3017: my ($target,$token) = @_;
3018: my $currentstring = '';
3019: if ($target eq 'web') {
3020: $currentstring = $token->[4];
3021: }
3022: return $currentstring;
3023: }
3024:
3025: sub end_base {
3026: my ($target,$token) = @_;
3027: my $currentstring = '';
3028: if ($target eq 'web') {
3029: $currentstring = $token->[2];
3030: }
3031: return $currentstring;
3032: }
3033:
3034: #-- <bdo> tag (end tag required)
3035: sub start_bdo {
3036: my ($target,$token) = @_;
3037: my $currentstring = '';
3038: if ($target eq 'web') {
3039: $currentstring = $token->[4];
3040: }
3041: return $currentstring;
3042: }
3043:
3044: sub end_bdo {
3045: my ($target,$token) = @_;
3046: my $currentstring = '';
3047: if ($target eq 'web') {
3048: $currentstring = $token->[2];
3049: }
3050: return $currentstring;
3051: }
3052:
3053: #-- <bgsound> tag (end tag optional)
3054: sub start_bgsound {
3055: my ($target,$token) = @_;
3056: my $currentstring = '';
3057: if ($target eq 'web') {
3058: $currentstring = $token->[4];
3059: }
3060: return $currentstring;
3061: }
3062:
3063: sub end_bgsound {
3064: my ($target,$token) = @_;
3065: my $currentstring = '';
3066: if ($target eq 'web') {
3067: $currentstring = $token->[2];
3068: }
3069: return $currentstring;
3070: }
3071:
3072: #-- <blink> tag (end tag required)
3073: sub start_blink {
3074: my ($target,$token) = @_;
3075: my $currentstring = '';
3076: if ($target eq 'web') {
3077: $currentstring = $token->[4];
3078: }
3079: return $currentstring;
3080: }
3081:
3082: sub end_blink {
3083: my ($target,$token) = @_;
3084: my $currentstring = '';
3085: if ($target eq 'web') {
3086: $currentstring = $token->[2];
3087: }
3088: return $currentstring;
3089: }
3090:
3091: #-- <blockquote> tag (end tag required)
3092: sub start_blockquote {
3093: my ($target,$token) = @_;
3094: my $currentstring = '';
3095: if ($target eq 'web') {
3096: $currentstring = $token->[4];
3097: }
3098: return $currentstring;
3099: }
3100:
3101: sub end_blockquote {
3102: my ($target,$token) = @_;
3103: my $currentstring = '';
3104: if ($target eq 'web') {
3105: $currentstring = $token->[2];
3106: }
3107: return $currentstring;
3108: }
3109:
3110: #-- <button> tag (end tag required)
3111: sub start_button {
3112: my ($target,$token) = @_;
3113: my $currentstring = '';
3114: if ($target eq 'web') {
3115: $currentstring = $token->[4];
3116: }
3117: return $currentstring;
3118: }
3119:
3120: sub end_button {
3121: my ($target,$token) = @_;
3122: my $currentstring = '';
3123: if ($target eq 'web') {
3124: $currentstring = $token->[2];
3125: }
3126: return $currentstring;
3127: }
3128:
3129: #-- <caption> tag (end tag required)
3130: sub start_caption {
3131: my ($target,$token) = @_;
3132: my $currentstring = '';
3133: if ($target eq 'web') {
3134: $currentstring = $token->[4];
3135: }
3136: return $currentstring;
3137: }
3138:
3139: sub end_caption {
3140: my ($target,$token) = @_;
3141: my $currentstring = '';
3142: if ($target eq 'web') {
3143: $currentstring = $token->[2];
3144: }
3145: return $currentstring;
3146: }
3147:
3148: #-- <col> tag (end tag forbdden)
3149: sub start_col {
3150: my ($target,$token) = @_;
3151: my $currentstring = '';
3152: if ($target eq 'web') {
3153: $currentstring = $token->[4];
3154: }
3155: return $currentstring;
3156: }
3157:
3158: sub end_col {
3159: my ($target,$token) = @_;
3160: my $currentstring = '';
3161: if ($target eq 'web') {
3162: $currentstring = $token->[2];
3163: }
3164: return $currentstring;
3165: }
3166:
3167: #-- <colgroup> tag (end tag optional)
3168: sub start_colgroup {
3169: my ($target,$token) = @_;
3170: my $currentstring = '';
3171: if ($target eq 'web') {
3172: $currentstring = $token->[4];
3173: }
3174: return $currentstring;
3175: }
3176:
3177: sub end_colgroup {
3178: my ($target,$token) = @_;
3179: my $currentstring = '';
3180: if ($target eq 'web') {
3181: $currentstring = $token->[2];
3182: }
3183: return $currentstring;
3184: }
3185:
3186: #-- <del> tag (end tag required)
3187: sub start_del {
3188: my ($target,$token) = @_;
3189: my $currentstring = '';
3190: if ($target eq 'web') {
3191: $currentstring = $token->[4];
3192: }
3193: return $currentstring;
3194: }
3195:
3196: sub end_del {
3197: my ($target,$token) = @_;
3198: my $currentstring = '';
3199: if ($target eq 'web') {
3200: $currentstring = $token->[2];
3201: }
3202: return $currentstring;
3203: }
3204:
3205: #-- <fieldset> tag (end tag required)
3206: sub start_fieldset {
3207: my ($target,$token) = @_;
3208: my $currentstring = '';
3209: if ($target eq 'web') {
3210: $currentstring = $token->[4];
3211: }
3212: return $currentstring;
3213: }
3214:
3215: sub end_fieldset {
3216: my ($target,$token) = @_;
3217: my $currentstring = '';
3218: if ($target eq 'web') {
3219: $currentstring = $token->[2];
3220: }
3221: return $currentstring;
3222: }
3223:
3224: #-- <frame> tag (end tag forbidden)
3225: sub start_frame {
3226: my ($target,$token) = @_;
3227: my $currentstring = '';
3228: if ($target eq 'web') {
3229: $currentstring = $token->[4];
3230: }
3231: return $currentstring;
3232: }
3233:
3234: sub end_frame {
3235: my ($target,$token) = @_;
3236: my $currentstring = '';
3237: if ($target eq 'web') {
3238: $currentstring = $token->[2];
3239: }
3240: return $currentstring;
3241: }
3242:
3243: #-- <iframe> tag (end tag required)
3244: sub start_iframe {
3245: my ($target,$token) = @_;
3246: my $currentstring = '';
3247: if ($target eq 'web') {
3248: $currentstring = $token->[4];
3249: }
3250: return $currentstring;
3251: }
3252:
3253: sub end_iframe {
3254: my ($target,$token) = @_;
3255: my $currentstring = '';
3256: if ($target eq 'web') {
3257: $currentstring = $token->[2];
3258: }
3259: return $currentstring;
3260: }
3261:
3262: #-- <ins> tag (end tag required)
3263: sub start_ins {
3264: my ($target,$token) = @_;
3265: my $currentstring = '';
3266: if ($target eq 'web') {
3267: $currentstring = $token->[4];
3268: }
3269: return $currentstring;
3270: }
3271:
3272: sub end_ins {
3273: my ($target,$token) = @_;
3274: my $currentstring = '';
3275: if ($target eq 'web') {
3276: $currentstring = $token->[2];
3277: }
3278: return $currentstring;
3279: }
3280:
3281: #-- <isindex> tag (end tag forbidden)
3282: sub start_isindex {
3283: my ($target,$token) = @_;
3284: my $currentstring = '';
3285: if ($target eq 'web') {
3286: $currentstring = $token->[4];
3287: }
3288: return $currentstring;
3289: }
3290:
3291: sub end_isindex {
3292: my ($target,$token) = @_;
3293: my $currentstring = '';
3294: if ($target eq 'web') {
3295: $currentstring = $token->[2];
3296: }
3297: return $currentstring;
3298: }
3299:
3300: #-- <keygen> tag (end tag forbidden)
3301: sub start_keygen {
3302: my ($target,$token) = @_;
3303: my $currentstring = '';
3304: if ($target eq 'web') {
3305: $currentstring = $token->[4];
3306: }
3307: return $currentstring;
3308: }
3309:
3310: sub end_keygen {
3311: my ($target,$token) = @_;
3312: my $currentstring = '';
3313: if ($target eq 'web') {
3314: $currentstring = $token->[2];
3315: }
3316: return $currentstring;
3317: }
3318:
3319: #-- <label> tag
3320: sub start_label {
3321: my ($target,$token) = @_;
3322: my $currentstring = '';
3323: if ($target eq 'web') {
3324: $currentstring = $token->[4];
3325: }
3326: return $currentstring;
3327: }
3328:
3329: sub end_label {
3330: my ($target,$token) = @_;
3331: my $currentstring = '';
3332: if ($target eq 'web') {
3333: $currentstring = $token->[2];
3334: }
3335: return $currentstring;
3336: }
3337:
3338: #-- <layer> tag (end tag required)
3339: sub start_layer {
3340: my ($target,$token) = @_;
3341: my $currentstring = '';
3342: if ($target eq 'web') {
3343: $currentstring = $token->[4];
3344: }
3345: return $currentstring;
3346: }
3347:
3348: sub end_layer {
3349: my ($target,$token) = @_;
3350: my $currentstring = '';
3351: if ($target eq 'web') {
3352: $currentstring = $token->[2];
3353: }
3354: return $currentstring;
3355: }
3356:
3357: #-- <legend> tag (end tag required)
3358: sub start_legend {
3359: my ($target,$token) = @_;
3360: my $currentstring = '';
3361: if ($target eq 'web') {
3362: $currentstring = $token->[4];
3363: }
3364: return $currentstring;
3365: }
3366:
3367: sub end_legend {
3368: my ($target,$token) = @_;
3369: my $currentstring = '';
3370: if ($target eq 'web') {
3371: $currentstring = $token->[2];
3372: }
3373: return $currentstring;
3374: }
3375:
3376: #-- <link> tag (end tag forbidden)
3377: sub start_link {
3378: my ($target,$token) = @_;
3379: my $currentstring = '';
3380: if ($target eq 'web') {
3381: $currentstring = $token->[4];
3382: }
3383: return $currentstring;
3384: }
3385:
3386: sub end_link {
3387: my ($target,$token) = @_;
3388: my $currentstring = '';
3389: if ($target eq 'web') {
3390: $currentstring = $token->[2];
3391: }
3392: return $currentstring;
3393: }
3394:
3395: #-- <marquee> tag (end tag optional)
3396: sub start_marquee {
3397: my ($target,$token) = @_;
3398: my $currentstring = '';
3399: if ($target eq 'web') {
3400: $currentstring = $token->[4];
3401: }
3402: return $currentstring;
3403: }
3404:
3405: sub end_marquee {
3406: my ($target,$token) = @_;
3407: my $currentstring = '';
3408: if ($target eq 'web') {
3409: $currentstring = $token->[2];
3410: }
3411: return $currentstring;
3412: }
3413:
3414: #-- <multicol> tag (end tag required)
3415: sub start_multicol {
3416: my ($target,$token) = @_;
3417: my $currentstring = '';
3418: if ($target eq 'web') {
3419: $currentstring = $token->[4];
3420: }
3421: return $currentstring;
3422: }
3423:
3424: sub end_multicol {
3425: my ($target,$token) = @_;
3426: my $currentstring = '';
3427: if ($target eq 'web') {
3428: $currentstring = $token->[2];
3429: }
3430: return $currentstring;
3431: }
3432:
3433: #-- <nobr> tag (end tag required)
3434: sub start_nobr {
3435: my ($target,$token) = @_;
3436: my $currentstring = '';
3437: if ($target eq 'web') {
3438: $currentstring = $token->[4];
3439: } elsif ($target eq 'tex') {
3440: $currentstring='\mbox{';
3441: }
3442: return $currentstring;
3443: }
3444:
3445: sub end_nobr {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web') {
3449: $currentstring = $token->[2];
3450: } elsif ($target eq 'tex') {
3451: $currentstring='}';
3452: }
3453: return $currentstring;
3454: }
3455:
3456: #-- <noembed> tag (end tag required)
3457: sub start_noembed {
3458: my ($target,$token) = @_;
3459: my $currentstring = '';
3460: if ($target eq 'web') {
3461: $currentstring = $token->[4];
3462: }
3463: return $currentstring;
3464: }
3465:
3466: sub end_noembed {
3467: my ($target,$token) = @_;
3468: my $currentstring = '';
3469: if ($target eq 'web') {
3470: $currentstring = $token->[2];
3471: }
3472: return $currentstring;
3473: }
3474:
3475: #-- <noframes> tag (end tag required)
3476: sub start_noframes {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web') {
3480: $currentstring = $token->[4];
3481: }
3482: return $currentstring;
3483: }
3484:
3485: sub end_noframes {
3486: my ($target,$token) = @_;
3487: my $currentstring = '';
3488: if ($target eq 'web') {
3489: $currentstring = $token->[2];
3490: }
3491: return $currentstring;
3492: }
3493:
3494: #-- <nolayer> tag (end tag required)
3495: sub start_nolayer {
3496: my ($target,$token) = @_;
3497: my $currentstring = '';
3498: if ($target eq 'web') {
3499: $currentstring = $token->[4];
3500: }
3501: return $currentstring;
3502: }
3503:
3504: sub end_nolayer {
3505: my ($target,$token) = @_;
3506: my $currentstring = '';
3507: if ($target eq 'web') {
3508: $currentstring = $token->[2];
3509: }
3510: return $currentstring;
3511: }
3512:
3513: #-- <noscript> tag (end tag required)
3514: sub start_noscript {
3515: my ($target,$token) = @_;
3516: my $currentstring = '';
3517: if ($target eq 'web') {
3518: $currentstring = $token->[4];
3519: }
3520: return $currentstring;
3521: }
3522:
3523: sub end_noscript {
3524: my ($target,$token) = @_;
3525: my $currentstring = '';
3526: if ($target eq 'web') {
3527: $currentstring = $token->[2];
3528: }
3529: return $currentstring;
3530: }
3531:
3532: #-- <object> tag (end tag required)
3533: sub start_object {
3534: my ($target,$token) = @_;
3535: my $currentstring = '';
3536: if ($target eq 'web') {
3537: $currentstring = $token->[4];
3538: }
3539: return $currentstring;
3540: }
3541:
3542: sub end_object {
3543: my ($target,$token) = @_;
3544: my $currentstring = '';
3545: if ($target eq 'web') {
3546: $currentstring = $token->[2];
3547: }
3548: return $currentstring;
3549: }
3550:
3551: #-- <optgroup> tag (end tag required)
3552: sub start_optgroup {
3553: my ($target,$token) = @_;
3554: my $currentstring = '';
3555: if ($target eq 'web') {
3556: $currentstring = $token->[4];
3557: }
3558: return $currentstring;
3559: }
3560:
3561: sub end_optgroup {
3562: my ($target,$token) = @_;
3563: my $currentstring = '';
3564: if ($target eq 'web') {
3565: $currentstring = $token->[2];
3566: }
3567: return $currentstring;
3568: }
3569:
3570: #-- <samp> tag (end tag required)
3571: sub start_samp {
3572: my ($target,$token) = @_;
3573: my $currentstring = '';
3574: if ($target eq 'web') {
3575: $currentstring = $token->[4];
3576: } elsif ($target eq 'tex') {
3577: $currentstring='\texttt{';
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_samp {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web') {
3586: $currentstring = $token->[2];
3587: } elsif ($target eq 'tex') {
3588: $currentstring='}';
3589: }
3590: return $currentstring;
3591: }
3592:
3593: #-- <server> tag
3594: sub start_server {
3595: my ($target,$token) = @_;
3596: my $currentstring = '';
3597: if ($target eq 'web') {
3598: $currentstring = $token->[4];
3599: }
3600: return $currentstring;
3601: }
3602:
3603: sub end_server {
3604: my ($target,$token) = @_;
3605: my $currentstring = '';
3606: if ($target eq 'web') {
3607: $currentstring = $token->[2];
3608: }
3609: return $currentstring;
3610: }
3611:
3612: #-- <spacer> tag (end tag forbidden)
3613: sub start_spacer {
3614: my ($target,$token) = @_;
3615: my $currentstring = '';
3616: if ($target eq 'web') {
3617: $currentstring = $token->[4];
3618: }
3619: return $currentstring;
3620: }
3621:
3622: sub end_spacer {
3623: my ($target,$token) = @_;
3624: my $currentstring = '';
3625: if ($target eq 'web') {
3626: $currentstring = $token->[2];
3627: }
3628: return $currentstring;
3629: }
3630:
3631: #-- <span> tag (end tag required)
3632: sub start_span {
3633: my ($target,$token) = @_;
3634: my $currentstring = '';
3635: if ($target eq 'web') {
3636: $currentstring = $token->[4];
3637: }
3638: return $currentstring;
3639: }
3640:
3641: sub end_span {
3642: my ($target,$token) = @_;
3643: my $currentstring = '';
3644: if ($target eq 'web') {
3645: $currentstring = $token->[2];
3646: }
3647: return $currentstring;
3648: }
3649:
3650: #-- <tbody> tag (end tag optional)
3651: sub start_tbody {
3652: my ($target,$token) = @_;
3653: my $currentstring = '';
3654: if ($target eq 'web') {
3655: $currentstring = $token->[4];
3656: }
3657: return $currentstring;
3658: }
3659:
3660: sub end_tbody {
3661: my ($target,$token) = @_;
3662: my $currentstring = '';
3663: if ($target eq 'web') {
3664: $currentstring = $token->[2];
3665: }
3666: return $currentstring;
3667: }
3668:
3669: #-- <tfoot> tag (end tag optional)
3670: sub start_tfoot {
3671: my ($target,$token) = @_;
3672: my $currentstring = '';
3673: if ($target eq 'web') {
3674: $currentstring = $token->[4];
3675: }
3676: return $currentstring;
3677: }
3678:
3679: sub end_tfoot {
3680: my ($target,$token) = @_;
3681: my $currentstring = '';
3682: if ($target eq 'web') {
3683: $currentstring = $token->[2];
3684: }
3685: return $currentstring;
3686: }
3687:
3688: #-- <thead> tag (end tag optional)
3689: sub start_thead {
3690: my ($target,$token) = @_;
3691: my $currentstring = '';
3692: if ($target eq 'web') {
3693: $currentstring = $token->[4];
3694: }
3695: return $currentstring;
3696: }
3697:
3698: sub end_thead {
3699: my ($target,$token) = @_;
3700: my $currentstring = '';
3701: if ($target eq 'web') {
3702: $currentstring = $token->[2];
3703: }
3704: return $currentstring;
3705: }
3706:
3707: #-- <var> tag
3708: sub start_var {
3709: my ($target,$token) = @_;
3710: my $currentstring = '';
3711: if ($target eq 'web') {
3712: $currentstring = $token->[4];
3713: } elsif ($target eq 'tex') {
3714: $currentstring = '\textit{';
3715: }
3716: return $currentstring;
3717: }
3718:
3719: sub end_var {
3720: my ($target,$token) = @_;
3721: my $currentstring = '';
3722: if ($target eq 'web') {
3723: $currentstring = $token->[2];
3724: } elsif ($target eq 'tex') {
3725: $currentstring = '}';
3726: }
3727: return $currentstring;
3728: }
3729:
3730: #-- <wbr> tag (end tag forbidden)
3731: sub start_wbr {
3732: my ($target,$token) = @_;
3733: my $currentstring = '';
3734: if ($target eq 'web') {
3735: $currentstring = $token->[4];
3736: }
3737: return $currentstring;
3738: }
3739:
3740: sub end_wbr {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web') {
3744: $currentstring = $token->[2];
3745: }
3746: return $currentstring;
3747: }
3748:
3749: #-- <hideweboutput> tag
3750: sub start_hideweboutput {
3751: my ($target,$token) = @_;
3752: if ($target eq 'web') {
3753: &Apache::lonxml::startredirection();
3754: }
3755: return '';
3756: }
3757:
3758: sub end_hideweboutput {
3759: my ($target,$token) = @_;
3760: my $currentstring = '';
3761: if ($target eq 'web') {
3762: $currentstring = &Apache::lonxml::endredirection();
3763: }
3764: return '';
3765: }
3766:
3767:
3768: sub image_replication {
3769: my $src = shift;
3770: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3771: #replicates eps or ps
3772: my $epssrc = my $pssrc = $src;
3773: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3774: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3775: if (not -e $epssrc && not -e $pssrc) {
3776: my $result=&Apache::lonnet::repcopy($epssrc);
3777: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3778: }
3779: return '';
3780: }
3781:
3782: sub image_size {
3783: my ($src,$scaling,$parstack,$safeeval)=@_;
3784: #size of image from gif/jpg/jpeg/png
3785: my $image = Image::Magick->new;
3786: my $current_figure = $image->Read($src);
3787: my $width_param = $image->Get('width') * $scaling;;
3788: my $height_param = $image->Get('height') * $scaling;;
3789: undef $image;
3790: #do we have any specified LaTeX size of the picture?
3791: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3792: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3793: #do we have any specified web size of the picture?
3794: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3795: undef,1);
3796: if ($TeXwidth ne '') {
3797: my $old_width_param=$width_param;
3798: if ($TeXwidth=~/(\d+)\s*\%/) {
3799: $width_param = $1*$ENV{'form.textwidth'}/100;
3800: } else {
3801: $width_param = $TeXwidth;
3802: }
3803: $height_param=$TeXwidth/$old_width_param*$height_param;
3804: } elsif ($TeXheight ne '') {
3805: $height_param = $TeXheight;
3806: $width_param = $TeXheight/$height_param*$width_param;
3807: } elsif ($width ne '') {
3808: my $old_width_param=$width_param;
3809: $width_param = $width*$scaling;
3810: $height_param=$width_param/$old_width_param*$height_param;
3811: }
3812: if ($width_param > $ENV{'form.textwidth'}) {
3813: my $old_width_param=$width_param;
3814: $width_param =0.95*$ENV{'form.textwidth'};
3815: $height_param=$width_param/$old_width_param*$height_param;
3816: }
3817: return ($height_param, $width_param);
3818: }
3819:
3820: sub image_width {
3821: my ($height, $width) = &image_size(@_);
3822: return $width;
3823: }
3824: # Not yet 100% sure this is correct in all circumstances..
3825: # due to my uncertainty about mods to image_size.
3826: #
3827: sub image_height {
3828: my ($height, $width) = &image_size(@_);
3829: return $height;
3830: }
3831:
3832: sub eps_generation {
3833: my ($src,$file,$width_param) = @_;
3834: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3835: my $temp_file = Apache::File->new('>>'.$filename);
3836: print $temp_file "$src\n";
3837: my $newsrc = $src;
3838: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3839: $newsrc=~s/\/home\/httpd\/html\/res//;
3840: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3841: $newsrc=~s/\/\.\//\//;
3842: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3843: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3844: $newsrc=~s/\/home\/httpd\/lonUsers//;
3845: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3846: }
3847: if ($newsrc=~/\/userfiles\//) {
3848: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3849: } else {
3850: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3851: }
3852: }
3853:
3854: sub file_path {
3855: my $src=shift;
3856: my ($file,$path);
3857: if ($src =~ m!(.*)/([^/]*)$!) {
3858: $file = $2;
3859: $path = $1.'/';
3860: }
3861: return $file,$path;
3862: }
3863:
3864: sub recalc {
3865: my $argument = shift;
3866: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3867: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3868: my $value=$1;
3869: my $units=$2;
3870: if ($units eq 'cm') {
3871: $value*=10;
3872: } elsif ($units eq 'in') {
3873: $value*=25.4;
3874: } elsif ($units eq 'pc') {
3875: $value*=(25.4*12/72.27);
3876: } elsif ($units eq 'pt') {
3877: $value*=(25.4/72.27);
3878: }
3879: return $value.' mm';
3880: }
3881:
3882: sub LATEX_length {
3883: my $garbage=shift;
3884: $garbage=~s/^\s+$//;
3885: $garbage=~s/^\s+(\S.*)/$1/;#space before
3886: $garbage=~s/(.*\S)\s+$/$1/;#space after
3887: $garbage=~s/(\s)+/$1/;#only one space
3888: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3889: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3890: $garbage=~s/([^\\])\$/$1/g;#$
3891: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3892: $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;
3893: $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;
3894: $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;
3895: $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;
3896: $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;
3897: $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;
3898: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3899: #remove some other LaTeX command
3900: $garbage=~s|\\(\w+)\\|\\|g;
3901: $garbage=~s|\\(\w+)(\s*)|$2|g;
3902: $garbage=~s|\+|11|g;
3903: my $value=length($garbage);
3904: return $value;
3905: }
3906:
3907:
3908:
3909:
3910: 1;
3911: __END__
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