File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
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1.237:
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Wed Aug 25 19:08:32 2004 UTC (19 years, 9 months ago) by
sakharuk
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Bug 3388 (Mix and Match printing wrong) is fixed. The source of bug is presence of type="A" attribute directly in <li> tags not in <ol> tag. This is why I was forced to define a new globals: array @Apache:londefdef::alphabit and scalar $Apache::londefdef::alphabit_infdex to trace the current value of index.
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.237 2004/08/25 19:08:32 sakharuk Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: @Apache::londefdef::alphabit=('A'..'Z');
70: $Apache::londefdef::alphabit_index=0;
71: }
72:
73: #======================= TAG SUBROUTINES =====================
74: #-- <output>
75: sub start_output {
76: my ($target) = @_;
77: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
78: return '';
79: }
80: sub end_output {
81: my ($target) = @_;
82: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
83: return '';
84: }
85: #-- <m> tag
86: sub start_m {
87: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
88: my $currentstring = '';
89: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
90: if ($target eq 'web' || $target eq 'analyze') {
91: $inside ='\\documentstyle{article}'.$inside;
92: &Apache::lonxml::debug("M is starting with:$inside:");
93: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
94: if ($eval eq 'on') {
95: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
96: #&Apache::lonxml::debug("M is evaulated to:$inside:");
97: }
98: $currentstring = &Apache::lontexconvert::converted(\$inside);
99: if ($Apache::lontexconvert::errorstring) {
100: &Apache::lonxml::warning("tth error: ".
101: $Apache::lontexconvert::errorstring);
102: $Apache::lontexconvert::errorstring='';
103: }
104: #&Apache::lonxml::debug("M is ends with:$currentstring:");
105: $Apache::lonxml::post_evaluate=0;
106: } elsif ($target eq 'tex') {
107: $currentstring = $inside;
108: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
109: if ($eval eq 'on') {
110: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
111: }
112: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
113: $Apache::lonxml::post_evaluate=0;
114: }
115: return $currentstring;
116: }
117:
118: sub end_m {
119: my ($target,$token) = @_;
120: my $currentstring = '';
121: if ($target eq 'tex') {
122: $currentstring = "";
123: }
124: return $currentstring;
125: }
126:
127: sub start_tthoption {
128: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
129: my $result;
130: if ($target eq 'web') {
131: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
132: $inside=~s/^\s*//;
133: if ($ENV{'browser.mathml'}) {
134: &tth::ttmoptions($inside);
135: } else {
136: &tth::tthoptions($inside);
137: }
138: }
139: return $result;
140: }
141:
142: sub end_tthoption {
143: my ($target,$token) = @_;
144: my $result;
145: return $result;
146: }
147:
148: #-- <html> tag (end tag optional)
149: sub start_html {
150: my ($target,$token) = @_;
151: my $currentstring = '';
152: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
153: &Apache::lontexconvert::init_tth();
154: if ($target eq 'web' || $target eq 'edit') {
155: $currentstring = &Apache::lonxml::xmlbegin().
156: &Apache::lonxml::fontsettings();
157: } elsif ($target eq 'tex') {
158: @Apache::londefdef::table = ();
159: $currentstring .= '\documentclass[letterpaper]{book}';
160: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
161: $currentstring .= '\newcommand{\keephidden}[1]{}'.
162: '\renewcommand{\deg}{$^{\circ}$}'.
163: '\usepackage{longtable}'.
164: '\usepackage{textcomp}'.
165: '\usepackage{makeidx}'.
166: '\usepackage[dvips]{graphicx}'.
167: '\usepackage{epsfig}'.
168: '\usepackage{calc}'.
169: '\usepackage{amsmath}'.
170: '\usepackage{amssymb}'.
171: '\usepackage{amsfonts}'.
172: '\usepackage{amsthm}'.
173: '\usepackage{amscd}'.
174: '\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}}'.
175: '\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}}';
176: }
177: return $currentstring;
178: }
179:
180: sub end_html {
181: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
182: my $currentstring = '';
183: if ($target eq 'web') {
184: $currentstring = &Apache::lonxml::xmlend($target,$parser);
185: }
186: return $currentstring;
187: }
188:
189: #-- <head> tag (end tag optional)
190: sub start_head {
191: my ($target,$token) = @_;
192: my $currentstring = '';
193: if ($target eq 'web') {
194: $currentstring = $token->[4];
195: }
196: return $currentstring;
197: }
198:
199: sub end_head {
200: my ($target,$token) = @_;
201: my $currentstring = '';
202: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
203: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
204: $token->[2];
205: }
206: return $currentstring;
207: }
208:
209: #-- <map> tag (end tag required)
210: sub start_map {
211: my ($target,$token) = @_;
212: my $currentstring = '';
213: if ($target eq 'web') {
214: $currentstring = $token->[4];
215: }
216: return $currentstring;
217: }
218:
219: sub end_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web') {
223: $currentstring = $token->[2];
224: }
225: return $currentstring;
226: }
227:
228: #-- <select> tag (end tag required)
229: sub start_select {
230: my ($target,$token) = @_;
231: my $currentstring = '';
232: if ($target eq 'web') {
233: $currentstring = $token->[4];
234: } elsif ($target eq 'tex') {
235: $Apache::londefdef::select=0;
236: }
237: return $currentstring;
238: }
239:
240: sub end_select {
241: my ($target,$token) = @_;
242: my $currentstring = '';
243: if ($target eq 'web') {
244: $currentstring = $token->[2];
245: }
246: return $currentstring;
247: }
248:
249: #-- <option> tag (end tag optional)
250: sub start_option {
251: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
252: my $currentstring = '';
253: if ($target eq 'web') {
254: $currentstring = $token->[4];
255: } elsif ($target eq 'tex') {
256: $Apache::londefdef::select++;
257: if ($Apache::londefdef::select == 1) {
258: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
259: } else {
260: $currentstring='\keephidden{';
261: }
262: }
263: return $currentstring;
264: }
265:
266: sub end_option {
267: my ($target,$token) = @_;
268: my $currentstring = '';
269: if ($target eq 'web') {
270: $currentstring = $token->[2];
271: } elsif ($target eq 'tex') {
272: $currentstring='}';
273: }
274: return $currentstring;
275: }
276:
277: #-- <input> tag (end tag forbidden)
278: sub start_input {
279: my ($target,$token) = @_;
280: my $currentstring = '';
281: if ($target eq 'web') {
282: $currentstring = $token->[4];
283: }
284: return $currentstring;
285: }
286:
287: sub end_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web') {
291: $currentstring = $token->[2];
292: }
293: return $currentstring;
294: }
295:
296: #-- <textarea> tag (end tag required)
297: sub start_textarea {
298: my ($target,$token) = @_;
299: my $currentstring = '';
300: if ($target eq 'web') {
301: $currentstring = $token->[4];
302: }
303: return $currentstring;
304: }
305:
306: sub end_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web') {
310: $currentstring = $token->[2];
311: }
312: return $currentstring;
313: }
314:
315: #-- <form> tag (end tag required)
316: sub start_form {
317: my ($target,$token) = @_;
318: my $currentstring = '';
319: if ($target eq 'web') {
320: $currentstring = $token->[4];
321: }
322: return $currentstring;
323: }
324:
325: sub end_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web') {
329: $currentstring = $token->[2];
330: }
331: return $currentstring;
332: }
333:
334: #-- <title> tag (end tag required)
335: sub start_title {
336: my ($target,$token) = @_;
337: my $currentstring = '';
338: if ($target eq 'web') {
339: $currentstring = $token->[4];
340: } elsif ($target eq 'tex') {
341: $currentstring .= '\keephidden{Title of the document: '
342: }
343: if ($target eq 'meta') {
344: $currentstring='<title>';
345: &start_output($target);
346: }
347: return $currentstring;
348: }
349:
350: sub end_title {
351: my ($target,$token) = @_;
352: my $currentstring = '';
353: if ($target eq 'web') {
354: $currentstring = $token->[2];
355: } elsif ($target eq 'tex') {
356: $currentstring .= '}';
357: }
358: if ($target eq 'meta') {
359: &end_output($target);
360: $currentstring='</title>';
361: }
362: return $currentstring;
363: }
364:
365: #-- <meta> tag (end tag forbidden)
366: sub start_meta {
367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
368: my $currentstring = '';
369: if ($target eq 'web') {
370: my $args='';
371: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
372: if ($args eq '') {
373: &Apache::lonxml::get_all_text("/meta",$parser);
374: } else {
375: $currentstring = $token->[4];
376: }
377: } elsif ($target eq 'meta') {
378: unless (&Apache::lonxml::get_param
379: ('http-equiv',$parstack,$safeeval,undef,1)) {
380: my $name=$token->[2]->{'name'};
381: $name=~tr/A-Z/a-z/;
382: $name=~s/\s/\_/gs;
383: $name=~s/\W//gs;
384: if ($name) {
385: $currentstring='<'.$name;
386: my $display=&Apache::lonxml::get_param
387: ('display',$parstack,$safeeval,undef,1);
388: if ($display) {
389: $display=~s/\"/\'/g;
390: $currentstring.=' display="'.$display.'"';
391: }
392: $currentstring.='>'.
393: &Apache::lonxml::get_param
394: ('content',$parstack,$safeeval,undef,1).
395: '</'.$name.'>';
396: }
397: my $display=&Apache::lonxml::get_param
398: ('display',$parstack,$safeeval,undef,1);
399: if ($display) {
400: $display=&HTML::Entities::encode($display,'<>&"');
401: $currentstring.='<'.$name.'.display>'.$display.
402: '</'.$name.'.display>';
403: }
404: }
405: } elsif ($target eq 'tex') {
406: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
407: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
408: if ((not defined $content) && (not defined $name)) {
409: &Apache::lonxml::startredirection();
410: }
411: }
412: return $currentstring;
413: }
414:
415: sub end_meta {
416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
417: my $currentstring = '';
418: if ($target eq 'web') {
419: my $args='';
420: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
421: if ($args ne '') {
422: $currentstring = $token->[4];
423: }
424: } elsif ($target eq 'tex') {
425: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
426: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
427: if ((not defined $content) && (not defined $name)) {
428: &Apache::lonxml::endredirection();
429: }
430: }
431: return $currentstring;
432: }
433:
434: # accessrule
435: sub start_accessrule {
436: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
437: my $currentstring = '';
438: my $eff=&Apache::lonxml::get_param
439: ('effect',$parstack,$safeeval,undef,1);
440: my $realm=&Apache::lonxml::get_param
441: ('realm',$parstack,$safeeval,undef,1);
442: my $role=&Apache::lonxml::get_param
443: ('role',$parstack,$safeeval,undef,1);
444: $realm=~s/\s+//g;
445: $realm=~s/\//\_/g;
446: $realm=~s/^\_//;
447: $realm=~s/\W/\;/g;
448: $role=~s/\s+//g;
449: $role=~s/\//\_/g;
450: $role=~s/\W/\;/g;
451: if ($target eq 'web') {
452: my $args='';
453: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
454: if ($args eq '') {
455: &Apache::lonxml::get_all_text("/accessrule",$parser);
456: } else {
457: $currentstring = $token->[4];
458: }
459: }
460: if ($target eq 'meta') {
461: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
462: }
463: return $currentstring;
464: }
465:
466: sub end_accessrule {
467: my ($target,$token,$tagstack,$parstack,$parser) = @_;
468: my $currentstring = '';
469: if ($target eq 'web') {
470: my $args='';
471: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
472: if ($args ne '') {
473: $currentstring = $token->[4];
474: }
475: }
476: return $currentstring;
477: }
478:
479: #-- <body> tag (end tag required)
480: sub start_body {
481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
482: my $currentstring = '';
483: if ($target eq 'web') {
484: if ($Apache::lonhomework::parsing_a_problem) {
485: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
486: return '';
487: }
488: if (!$Apache::lonxml::registered &&
489: $ENV{'request.state'} eq 'published') {
490: $currentstring.='<head>'.
491: &Apache::lonmenu::registerurl(undef,$target).'</head>';
492: }
493: # Accessibility
494: if ($ENV{'browser.imagesuppress'} eq 'on') {
495: delete($token->[2]->{'background'});
496: }
497: if ($ENV{'browser.fontenhance'} eq 'on') {
498: my $style='';
499: foreach my $key (keys(%{$token->[2]})) {
500: if ($key =~ /^style$/i) {
501: $style.=$token->[2]->{$key}.';';
502: delete($token->[2]->{$key});
503: }
504: }
505: $token->[2]->{'style'}=$style.'; font-size: x-large;';
506: }
507: if ($ENV{'browser.blackwhite'} eq 'on') {
508: delete($token->[2]->{'font'});
509: delete($token->[2]->{'link'});
510: delete($token->[2]->{'alink'});
511: delete($token->[2]->{'vlink'});
512: delete($token->[2]->{'bgcolor'});
513: delete($token->[2]->{'background'});
514: }
515: # Overload loads
516: my $onLoad='';
517: foreach my $key (keys(%{$token->[2]})) {
518: if ($key =~ /^onload$/i) {
519: $onLoad.=$token->[2]->{$key}.';';
520: delete($token->[2]->{$key});
521: }
522: }
523: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
524: my $onUnload='';
525: foreach my $key (keys(%{$token->[2]})) {
526: if ($key =~ /^onunload$/i) {
527: $onUnload.=$token->[2]->{$key}.';';
528: delete($token->[2]->{$key});
529: }
530: }
531: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
532: ';'.$onUnload;
533:
534: $currentstring .= '<'.$token->[1];
535: foreach (keys %{$token->[2]}) {
536: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
537: }
538: $currentstring.='>';
539: if ($ENV{'request.state'} ne 'published') {
540: $currentstring.=(<<EDITBUTTON);
541: <form method="post">
542: <input type="submit" name="editmode" accesskey="e" value="Edit" />
543: </form>
544: EDITBUTTON
545: } else {
546: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
547: }
548: $currentstring.=&Apache::lonxml::message_location();
549: } elsif ($target eq 'tex') {
550: $currentstring = '\begin{document}';
551: }
552: return $currentstring;
553: }
554:
555: sub end_body {
556: my ($target,$token) = @_;
557: my $currentstring = '';
558: if ($target eq 'web') {
559: $currentstring = $token->[2];
560: } elsif ($target eq 'tex') {
561: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
562: }
563: return $currentstring;
564: }
565:
566: #-- <center> tag (end tag required)
567: sub start_center {
568: my ($target,$token) = @_;
569: my $currentstring = '';
570: if ($target eq 'web') {
571: $currentstring = $token->[4];
572: } elsif ($target eq 'tex') {
573: $currentstring = '\begin{center}';
574: }
575: return $currentstring;
576: }
577:
578: sub end_center {
579: my ($target,$token) = @_;
580: my $currentstring = '';
581: if ($target eq 'web') {
582: $currentstring = $token->[2];
583: } elsif ($target eq 'tex') {
584: $currentstring = '\end{center}';
585: }
586: return $currentstring;
587: }
588:
589: #-- <b> tag (end tag required)
590: sub start_b {
591: my ($target,$token) = @_;
592: my $currentstring = '';
593: if ($target eq 'web') {
594: $currentstring = $token->[4];
595: } elsif ($target eq 'tex') {
596: $currentstring = '\textbf{';
597: }
598: return $currentstring;
599: }
600:
601: sub end_b {
602: my ($target,$token) = @_;
603: my $currentstring = '';
604: if ($target eq 'web') {
605: $currentstring = $token->[2];
606: } elsif ($target eq 'tex') {
607: $currentstring = '}';
608: }
609: return $currentstring;
610: }
611:
612: #-- <strong> tag (end tag required)
613: sub start_strong {
614: my ($target,$token) = @_;
615: my $currentstring = '';
616: if ($target eq 'web') {
617: $currentstring = $token->[4];
618: } elsif ($target eq 'tex') {
619: $currentstring = '\textbf{';
620: }
621: return $currentstring;
622: }
623:
624: sub end_strong {
625: my ($target,$token) = @_;
626: my $currentstring = '';
627: if ($target eq 'web') {
628: $currentstring = $token->[2];
629: } elsif ($target eq 'tex') {
630: $currentstring = '}';
631: }
632: return $currentstring;
633: }
634:
635: #-- <h1> tag (end tag required)
636: sub start_h1 {
637: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
638: my $currentstring = '';
639: if ($target eq 'web') {
640: $currentstring .= $token->[4];
641: } elsif ($target eq 'tex') {
642: my $pre;
643: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
644: if ($align eq 'center') {
645: $pre='\begin{center}';
646: } elsif ($align eq 'left') {
647: $pre='\rlap{';
648: } elsif ($align eq 'right') {
649: $pre=' \hfill \llap{';
650: }
651: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
652: if (not defined $TeXsize) {$TeXsize="large";}
653: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
654: } elsif ($target eq 'meta') {
655: $currentstring='<subject>';
656: &start_output($target);
657: }
658: return $currentstring;
659: }
660:
661: sub end_h1 {
662: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
663: my $currentstring = '';
664: if ($target eq 'web') {
665: $currentstring .= $token->[2];
666: } elsif ($target eq 'tex') {
667: my $post='\vskip 0 mm ';
668: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
669: if ($align eq 'center') {
670: $post='\end{center}';
671: } elsif ($align eq 'left') {
672: $post='} \hfill'.'\vskip 0 mm ';
673: } elsif ($align eq 'right') {
674: $post='}'.'\vskip 0 mm ';
675: }
676: $currentstring .= '}}'.$post;
677: } elsif ($target eq 'meta') {
678: &end_output($target);
679: $currentstring='</subject>';
680: }
681: return $currentstring;
682: }
683:
684: #-- <h2> tag
685: sub start_h2 {
686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
687: my $currentstring = '';
688: if ($target eq 'web') {
689: $currentstring .= $token->[4];
690: } elsif ($target eq 'tex') {
691: my $pre;
692: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
693: if ($align eq 'center') {
694: $pre='\begin{center}';
695: } elsif ($align eq 'left') {
696: $pre='\rlap{';
697: } elsif ($align eq 'right') {
698: $pre=' \hfill \llap{';
699: }
700: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
701: if (not defined $TeXsize) {$TeXsize="large";}
702: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
703: }
704: return $currentstring;
705: }
706:
707: sub end_h2 {
708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
709: my $currentstring = '';
710: if ($target eq 'web') {
711: $currentstring .= $token->[2];
712: } elsif ($target eq 'tex') {
713: my $post='\vskip 0 mm ';
714: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
715: if ($align eq 'center') {
716: $post='\end{center}';
717: } elsif ($align eq 'left') {
718: $post='} \hfill'.'\vskip 0 mm ';
719: } elsif ($align eq 'right') {
720: $post='}'.'\vskip 0 mm ';
721: }
722: $currentstring .= '}}'.$post;
723: }
724: return $currentstring;
725: }
726:
727: #-- <h3> tag
728: sub start_h3 {
729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
730: my $currentstring = '';
731: if ($target eq 'web') {
732: $currentstring .= $token->[4];
733: } elsif ($target eq 'tex') {
734: my $pre;
735: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
736: if ($align eq 'center') {
737: $pre='\begin{center}';
738: } elsif ($align eq 'left') {
739: $pre='\rlap{';
740: } elsif ($align eq 'right') {
741: $pre=' \hfill \llap{';
742: }
743: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
744: if (not defined $TeXsize) {$TeXsize="large";}
745: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
746: }
747: return $currentstring;
748: }
749:
750: sub end_h3 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = '';
753: if ($target eq 'web') {
754: $currentstring .= $token->[2];
755: } elsif ($target eq 'tex') {
756: my $post='\vskip 0 mm ';
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $post='\end{center}';
760: } elsif ($align eq 'left') {
761: $post='} \hfill'.'\vskip 0 mm ';
762: } elsif ($align eq 'right') {
763: $post='}'.'\vskip 0 mm ';
764: }
765: $currentstring .= '}}'.$post;
766: }
767: return $currentstring;
768: }
769:
770: #-- <h4> tag
771: sub start_h4 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = '';
774: if ($target eq 'web') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h4 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h5> tag
814: sub start_h5 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = '';
817: if ($target eq 'web') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h5 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h6> tag
857: sub start_h6 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = '';
860: if ($target eq 'web') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h6 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #--- <cite> tag (end tag required)
900: sub start_cite {
901: my ($target,$token) = @_;
902: my $currentstring = '';
903: if ($target eq 'web') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: $currentstring .= '\textit{';
907: }
908: return $currentstring;
909: }
910:
911: sub end_cite {
912: my ($target,$token) = @_;
913: my $currentstring = '';
914: if ($target eq 'web') {
915: $currentstring .= $token->[2];
916: } elsif ($target eq 'tex') {
917: $currentstring .= '}';
918: }
919: return $currentstring;
920: }
921:
922: #-- <i> tag (end tag required)
923: sub start_i {
924: my ($target,$token) = @_;
925: my $currentstring = '';
926: if ($target eq 'web') {
927: $currentstring .= $token->[4];
928: } elsif ($target eq 'tex') {
929: $currentstring .= '\textit{';
930: }
931: return $currentstring;
932: }
933:
934: sub end_i {
935: my ($target,$token) = @_;
936: my $currentstring = '';
937: if ($target eq 'web') {
938: $currentstring .= $token->[2];
939: } elsif ($target eq 'tex') {
940: $currentstring .= '}';
941: }
942: return $currentstring;
943: }
944:
945: #-- <address> tag (end tag required)
946: sub start_address {
947: my ($target,$token) = @_;
948: my $currentstring = '';
949: if ($target eq 'web') {
950: $currentstring .= $token->[4];
951: } elsif ($target eq 'tex') {
952: $currentstring .= '\textit{';
953: }
954: return $currentstring;
955: }
956:
957: sub end_address {
958: my ($target,$token) = @_;
959: my $currentstring = '';
960: if ($target eq 'web') {
961: $currentstring .= $token->[2];
962: } elsif ($target eq 'tex') {
963: $currentstring .= '}';
964: }
965: return $currentstring;
966: }
967:
968: #-- <dfn> tag (end tag required)
969: sub start_dfn {
970: my ($target,$token) = @_;
971: my $currentstring = '';
972: if ($target eq 'web') {
973: $currentstring .= $token->[4];
974: } elsif ($target eq 'tex') {
975: $currentstring .= '\textit{';
976: }
977: return $currentstring;
978: }
979:
980: sub end_dfn {
981: my ($target,$token) = @_;
982: my $currentstring = '';
983: if ($target eq 'web') {
984: $currentstring .= $token->[2];
985: } elsif ($target eq 'tex') {
986: $currentstring .= '}';
987: }
988: return $currentstring;
989: }
990:
991: #-- <tt> tag (end tag required)
992: sub start_tt {
993: my ($target,$token) = @_;
994: my $currentstring = '';
995: if ($target eq 'web') {
996: $currentstring .= $token->[4];
997: } elsif ($target eq 'tex') {
998: $currentstring .= '\texttt{';
999: }
1000: return $currentstring;
1001: }
1002:
1003: sub end_tt {
1004: my ($target,$token) = @_;
1005: my $currentstring = '';
1006: if ($target eq 'web') {
1007: $currentstring .= $token->[2];
1008: } elsif ($target eq 'tex') {
1009: $currentstring .= '}';
1010: }
1011: return $currentstring;
1012: }
1013:
1014: #-- <kbd> tag (end tag required)
1015: sub start_kbd {
1016: my ($target,$token) = @_;
1017: my $currentstring = '';
1018: if ($target eq 'web') {
1019: $currentstring .= $token->[4];
1020: } elsif ($target eq 'tex') {
1021: $currentstring .= '\texttt{';
1022: }
1023: return $currentstring;
1024: }
1025:
1026: sub end_kbd {
1027: my ($target,$token) = @_;
1028: my $currentstring = '';
1029: if ($target eq 'web') {
1030: $currentstring .= $token->[2];
1031: } elsif ($target eq 'tex') {
1032: $currentstring .= '}';
1033: }
1034: return $currentstring;
1035: }
1036:
1037: #-- <code> tag (end tag required)
1038: sub start_code {
1039: my ($target,$token) = @_;
1040: my $currentstring = '';
1041: if ($target eq 'web') {
1042: $currentstring .= $token->[4];
1043: } elsif ($target eq 'tex') {
1044: $currentstring .= '\texttt{';
1045: }
1046: return $currentstring;
1047: }
1048:
1049: sub end_code {
1050: my ($target,$token) = @_;
1051: my $currentstring = '';
1052: if ($target eq 'web') {
1053: $currentstring .= $token->[2];
1054: } elsif ($target eq 'tex') {
1055: $currentstring .= '}';
1056: }
1057: return $currentstring;
1058: }
1059:
1060: #-- <em> tag (end tag required)
1061: sub start_em {
1062: my ($target,$token) = @_;
1063: my $currentstring = '';
1064: if ($target eq 'web') {
1065: $currentstring .= $token->[4];
1066: } elsif ($target eq 'tex') {
1067: $currentstring .= '\emph{';
1068: }
1069: return $currentstring;
1070: }
1071:
1072: sub end_em {
1073: my ($target,$token) = @_;
1074: my $currentstring = '';
1075: if ($target eq 'web') {
1076: $currentstring .= $token->[2];
1077: } elsif ($target eq 'tex') {
1078: $currentstring .= '}';
1079: }
1080: return $currentstring;
1081: }
1082:
1083: #-- <q> tag (end tag required)
1084: sub start_q {
1085: my ($target,$token) = @_;
1086: my $currentstring = '';
1087: if ($target eq 'web') {
1088: $currentstring .= $token->[4];
1089: } elsif ($target eq 'tex') {
1090: $currentstring .= '\emph{';
1091: }
1092: return $currentstring;
1093: }
1094:
1095: sub end_q {
1096: my ($target,$token) = @_;
1097: my $currentstring = '';
1098: if ($target eq 'web') {
1099: $currentstring .= $token->[2];
1100: } elsif ($target eq 'tex') {
1101: $currentstring .= '}';
1102: }
1103: return $currentstring;
1104: }
1105:
1106: #-- <p> tag (end tag optional)
1107: #optional attribute - align="center|left|right"
1108: sub start_p {
1109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1110: my $currentstring = '';
1111: if ($target eq 'web') {
1112: $currentstring .= $token->[4];
1113: } elsif ($target eq 'tex') {
1114: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1115: if ($align eq 'center') {
1116: $currentstring='\begin{center}\par';
1117: } elsif ($align eq 'right') {
1118: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1119: } elsif ($align eq 'left') {
1120: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1121: } else {
1122: $currentstring='\par ';
1123: }
1124: my $signal=1;#<p> does not work inside <b>...</b>
1125: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1126: if (!$signal) {$currentstring = '';}
1127: }
1128: }
1129: return $currentstring;
1130: }
1131:
1132: sub end_p {
1133: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1134: my $currentstring = '';
1135: if ($target eq 'web') {
1136: $currentstring .= $token->[2];
1137: } elsif ($target eq 'tex') {
1138: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1139: if (not defined $align) {
1140: $currentstring.='\strut\\\\\strut ';
1141: } elsif ($align eq 'center') {
1142: $currentstring .= '\end{center}';
1143: } elsif ($align eq 'right') {
1144: $currentstring .= '}}';
1145: } elsif ($align eq 'left') {
1146: $currentstring .= '}\hfill}';
1147: }
1148: }
1149: return $currentstring;
1150: }
1151:
1152: #-- <br> tag (end tag forbidden)
1153: sub start_br {
1154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1155: my $currentstring = '';
1156: if ($target eq 'web') {
1157: $currentstring .= $token->[4];
1158: } elsif ($target eq 'tex') {
1159: my @tempo=@$tagstack;
1160: my $signal=0;
1161: for (my $i=$#tempo;$i>=0;$i--) {
1162: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1163: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1164: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1165: $signal=1;
1166: last;
1167: }
1168: }
1169: if ($signal) {
1170: $currentstring .= ' \vskip 0 mm ';
1171: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1172: $currentstring .= '\strut \\\\ \strut ';
1173: }
1174: }
1175: return $currentstring;
1176: }
1177:
1178: sub end_br {
1179: my ($target,$token) = @_;
1180: my $currentstring = '';
1181: if ($target eq 'web') {
1182: $currentstring .= $token->[2];
1183: }
1184: return $currentstring;
1185: }
1186:
1187: #-- <big> tag (end tag required)
1188: sub start_big {
1189: my ($target,$token) = @_;
1190: my $currentstring = '';
1191: if ($target eq 'web') {
1192: $currentstring .= $token->[4];
1193: } elsif ($target eq 'tex') {
1194: $currentstring .= '{\large ';
1195: }
1196: return $currentstring;
1197: }
1198:
1199: sub end_big {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web') {
1203: $currentstring .= $token->[2];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '}';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: #-- <small> tag (end tag required)
1211: sub start_small {
1212: my ($target,$token) = @_;
1213: my $currentstring = '';
1214: if ($target eq 'web') {
1215: $currentstring .= $token->[4];
1216: } elsif ($target eq 'tex') {
1217: $currentstring .= '{\footnotesize ';
1218: }
1219: return $currentstring;
1220: }
1221:
1222: sub end_small {
1223: my ($target,$token) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web') {
1226: $currentstring .= $token->[2];
1227: } elsif ($target eq 'tex') {
1228: $currentstring .= '}';
1229: }
1230: return $currentstring;
1231: }
1232:
1233: #-- <basefont> tag (end tag forbidden)
1234: sub start_basefont {
1235: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1236: my $currentstring = '';
1237: if ($target eq 'web') {
1238: $currentstring = $token->[4];
1239: } elsif ($target eq 'tex') {
1240: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1241: if (defined $basesize) {
1242: $currentstring = '{\\'.$basesize.' ';
1243: }
1244: }
1245: return $currentstring;
1246: }
1247:
1248: sub end_basefont {
1249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1250: my $currentstring = '';
1251: if ($target eq 'web') {
1252: $currentstring = $token->[4];
1253: } elsif ($target eq 'tex') {
1254: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1255: if (defined $basesize) {
1256: $currentstring = '}';
1257: }
1258: }
1259: return $currentstring;
1260: }
1261:
1262: #-- <font> tag (end tag required)
1263: sub start_font {
1264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1265: my $currentstring = '';
1266: if ($target eq 'web') {
1267: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1268: if ($face!~/symbol/i) {
1269: if (($ENV{'browser.fontenhance'} eq 'on') ||
1270: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1271: }
1272: $currentstring = $token->[4];
1273: } elsif ($target eq 'tex') {
1274: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1275: if (defined $fontsize) {
1276: $currentstring = '{\\'.$fontsize.' ';
1277: }
1278: }
1279: return $currentstring;
1280: }
1281:
1282: sub end_font {
1283: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1284: my $currentstring = '';
1285: if ($target eq 'web') {
1286: $currentstring = $token->[2];
1287: } elsif ($target eq 'tex') {
1288: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1289: if (defined $fontsize) {
1290: $currentstring = '}';
1291: }
1292: }
1293: return $currentstring;
1294: }
1295:
1296: #-- <strike> tag (end tag required)
1297: sub start_strike {
1298: my ($target,$token) = @_;
1299: my $currentstring = '';
1300: if ($target eq 'web') {
1301: $currentstring .= $token->[4];
1302: } elsif ($target eq 'tex') {
1303: &Apache::lonxml::startredirection();
1304: }
1305: return $currentstring;
1306: }
1307:
1308: sub end_strike {
1309: my ($target,$token) = @_;
1310: my $currentstring = '';
1311: if ($target eq 'web') {
1312: $currentstring .= $token->[2];
1313: } elsif ($target eq 'tex') {
1314: $currentstring=&Apache::lonxml::endredirection();
1315: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1316: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1317: $currentstring=~s/(\S)\s*$/$1\}/;
1318: }
1319: return $currentstring;
1320: }
1321:
1322: #-- <s> tag (end tag required)
1323: sub start_s {
1324: my ($target,$token) = @_;
1325: my $currentstring = '';
1326: if ($target eq 'web') {
1327: $currentstring .= $token->[4];
1328: } elsif ($target eq 'tex') {
1329: &Apache::lonxml::startredirection();
1330: }
1331: return $currentstring;
1332: }
1333:
1334: sub end_s {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web') {
1338: $currentstring .= $token->[2];
1339: } elsif ($target eq 'tex') {
1340: $currentstring=&Apache::lonxml::endredirection();
1341: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1342: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1343: $currentstring=~s/(\S)\s*$/$1\}/;
1344: }
1345: return $currentstring;
1346: }
1347:
1348: #-- <sub> tag (end tag required)
1349: sub start_sub {
1350: my ($target,$token) = @_;
1351: my $currentstring = '';
1352: if ($target eq 'web') {
1353: $currentstring .= $token->[4];
1354: } elsif ($target eq 'tex') {
1355: $currentstring .= '\ensuremath{_{';
1356: }
1357: return $currentstring;
1358: }
1359:
1360: sub end_sub {
1361: my ($target,$token) = @_;
1362: my $currentstring = '';
1363: if ($target eq 'web') {
1364: $currentstring .= $token->[2];
1365: } elsif ($target eq 'tex') {
1366: $currentstring .= '}}';
1367: }
1368: return $currentstring;
1369: }
1370:
1371: #-- <sup> tag (end tag required)
1372: sub start_sup {
1373: my ($target,$token) = @_;
1374: my $currentstring = '';
1375: if ($target eq 'web') {
1376: $currentstring .= $token->[4];
1377: } elsif ($target eq 'tex') {
1378: $currentstring .= '\ensuremath{^{';
1379: }
1380: return $currentstring;
1381: }
1382:
1383: sub end_sup {
1384: my ($target,$token) = @_;
1385: my $currentstring = '';
1386: if ($target eq 'web') {
1387: $currentstring .= $token->[2];
1388: } elsif ($target eq 'tex') {
1389: $currentstring .= '}}';
1390: }
1391: return $currentstring;
1392: }
1393:
1394: #-- <hr> tag (end tag forbidden)
1395: sub start_hr {
1396: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1397: my $currentstring = '';
1398: if ($target eq 'web') {
1399: $currentstring .= $token->[4];
1400: } elsif ($target eq 'tex') {
1401: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1402: if (defined $LaTeXwidth) {
1403: if ($LaTeXwidth=~/^%/) {
1404: substr($LaTeXwidth,0,1)='';
1405: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1406: }
1407: } else {
1408: $LaTeXwidth ='0.9\textwidth';
1409: }
1410: my ($pre,$post);
1411: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1412: if (($align eq 'center') || (not defined $align)) {
1413: $pre=''; $post='';
1414: } elsif ($align eq 'left') {
1415: $pre='\rlap{'; $post='} \hfill';
1416: } elsif ($align eq 'right') {
1417: $pre=' \hfill \llap{'; $post='}';
1418: }
1419: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1420: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1421: }
1422: return $currentstring;
1423: }
1424:
1425: sub end_hr {
1426: my ($target,$token) = @_;
1427: my $currentstring = '';
1428: if ($target eq 'web') {
1429: $currentstring .= $token->[2];
1430: }
1431: return $currentstring;
1432: }
1433:
1434: #-- <div> tag (end tag required)
1435: sub start_div {
1436: my ($target,$token) = @_;
1437: my $currentstring = '';
1438: if ($target eq 'web') {
1439: $currentstring .= $token->[4];
1440: }
1441: return $currentstring;
1442: }
1443:
1444: sub end_div {
1445: my ($target,$token) = @_;
1446: my $currentstring = '';
1447: if ($target eq 'web') {
1448: $currentstring .= $token->[2];
1449: }
1450: return $currentstring;
1451: }
1452:
1453: #-- <a> tag (end tag required)
1454: sub start_a {
1455: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web') {
1458: $currentstring .= $token->[4];
1459: } elsif ($target eq 'tex') {
1460: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1461: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1462: if ($a=~/\S/) {
1463: $a=~s/([^\\])%/$1\\\%/g;
1464: $currentstring .= '\ref{URI: '.$a.'}';
1465: } elsif ($b=~/\S/) {
1466: $currentstring .= '\ref{Anchor: '.$b.'}';
1467: } else {
1468: $currentstring.='';
1469: }
1470: }
1471: return $currentstring;
1472: }
1473:
1474: sub end_a {
1475: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1476: my $currentstring = '';
1477: if ($target eq 'web') {
1478: $currentstring .= $token->[2];
1479: }
1480: return $currentstring;
1481: }
1482:
1483: #-- <li> tag (end tag optional)
1484: sub start_li {
1485: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1486: my $currentstring = '';
1487: if ($target eq 'web') {
1488: $currentstring = $token->[4];
1489: } elsif ($target eq 'tex') {
1490: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1491: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1492: if ($type=~/circle/) {
1493: $currentstring .= ' \item[o] ';
1494: } elsif ($type=~/square/) {
1495: $currentstring .= ' \item[$\Box$] ';
1496: } elsif ($type eq 'A') {
1497: $currentstring .= ' \item['.$Apache::londefdef::alphabit[$Apache::londefdef::alphabit_index].']';
1498: $Apache::londefdef::alphabit_index++;
1499: } elsif ($type eq 'a') {
1500: my $lower_case=lc $Apache::londefdef::alphabit[$Apache::londefdef::alphabit_index];
1501: $currentstring .= ' \item['.$lower_case.']';
1502: $Apache::londefdef::alphabit_index++;
1503: } elsif ($value ne '') {
1504: $currentstring .= ' \item['.$value.'] ';
1505: } else {
1506: $currentstring .= ' \item ';
1507: }
1508: }
1509: return $currentstring;
1510: }
1511:
1512: sub end_li {
1513: my ($target,$token) = @_;
1514: my $currentstring = '';
1515: if ($target eq 'web') {
1516: $currentstring = $token->[2];
1517: }
1518: return $currentstring;
1519: }
1520:
1521: #-- <u> tag (end tag required)
1522: sub start_u {
1523: my ($target,$token) = @_;
1524: my $currentstring = '';
1525: if ($target eq 'web') {
1526: $currentstring .= $token->[4];
1527: } elsif ($target eq 'tex') {
1528: &Apache::lonxml::startredirection();
1529: }
1530: return $currentstring;
1531: }
1532:
1533: sub end_u {
1534: my ($target,$token) = @_;
1535: my $currentstring = '';
1536: if ($target eq 'web') {
1537: $currentstring .= $token->[2];
1538: } elsif ($target eq 'tex') {
1539: $currentstring=&Apache::lonxml::endredirection();
1540: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1541: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1542: $currentstring=~s/(\S)\s*$/$1\}/;
1543: }
1544: return $currentstring;
1545: }
1546:
1547: #-- <ul> tag (end tag required)
1548: sub start_ul {
1549: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1550: my $currentstring = '';
1551: if ($target eq 'web') {
1552: $currentstring = $token->[4];
1553: } elsif ($target eq 'tex') {
1554: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1555: if ($TeXtype eq 'disc') {
1556: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1557: '\renewcommand{\labelitemii}{$\bullet$}'.
1558: '\renewcommand{\labelitemiii}{$\bullet$}'.
1559: '\renewcommand{\labelitemiv}{$\bullet$}';
1560: } elsif ($TeXtype eq 'circle') {
1561: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1562: '\renewcommand{\labelitemii}{$\circ$}'.
1563: '\renewcommand{\labelitemiii}{$\circ$}'.
1564: '\renewcommand{\labelitemiv}{$\circ$}';
1565: } elsif ($TeXtype eq 'square') {
1566: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1567: '\renewcommand{\labelitemii}{$\diamond$}'.
1568: '\renewcommand{\labelitemiii}{$\diamond$}'.
1569: '\renewcommand{\labelitemiv}{$\diamond$}';
1570: }
1571: $currentstring .= '\strut \begin{itemize}';
1572: }
1573: return $currentstring;
1574: }
1575:
1576: sub end_ul {
1577: my ($target,$token) = @_;
1578: my $currentstring = '';
1579: if ($target eq 'web') {
1580: $currentstring = $token->[2];
1581: } elsif ($target eq 'tex') {
1582: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1583: '\renewcommand{\labelitemii}{$\bullet$}'.
1584: '\renewcommand{\labelitemiii}{$\bullet$}'.
1585: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1586: }
1587: return $currentstring;
1588: }
1589:
1590: #-- <menu> tag (end tag required)
1591: sub start_menu {
1592: my ($target,$token) = @_;
1593: my $currentstring = '';
1594: if ($target eq 'web') {
1595: $currentstring = $token->[4];
1596: } elsif ($target eq 'tex') {
1597: $currentstring = " \\begin{itemize} ";
1598: }
1599: return $currentstring;
1600: }
1601:
1602: sub end_menu {
1603: my ($target,$token) = @_;
1604: my $currentstring = '';
1605: if ($target eq 'web') {
1606: $currentstring = $token->[2];
1607: } elsif ($target eq 'tex') {
1608: $currentstring = " \\end{itemize}";
1609: }
1610: return $currentstring;
1611: }
1612:
1613: #-- <dir> tag (end tag required)
1614: sub start_dir {
1615: my ($target,$token) = @_;
1616: my $currentstring = '';
1617: if ($target eq 'web') {
1618: $currentstring = $token->[4];
1619: } elsif ($target eq 'tex') {
1620: $currentstring = " \\begin{itemize} ";
1621: }
1622: return $currentstring;
1623: }
1624:
1625: sub end_dir {
1626: my ($target,$token) = @_;
1627: my $currentstring = '';
1628: if ($target eq 'web') {
1629: $currentstring = $token->[2];
1630: } elsif ($target eq 'tex') {
1631: $currentstring = " \\end{itemize}";
1632: }
1633: return $currentstring;
1634: }
1635:
1636: #-- <ol> tag (end tag required)
1637: sub start_ol {
1638: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1639: my $currentstring = '';
1640: if ($target eq 'web') {
1641: $currentstring = $token->[4];
1642: } elsif ($target eq 'tex') {
1643: $Apache::londefdef::alpabit_index=0;
1644: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1645: if ($type eq '1') {
1646: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1647: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1648: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1649: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1650: } elsif ($type eq 'A') {
1651: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1652: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1653: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1654: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1655: } elsif ($type eq 'a') {
1656: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1657: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1658: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1659: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1660: } elsif ($type eq 'i') {
1661: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1662: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1663: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1664: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1665: } elsif ($type eq 'I') {
1666: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1667: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1668: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1669: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1670: }
1671: $currentstring .= '\strut \begin{enumerate}';
1672: }
1673: return $currentstring;
1674: }
1675:
1676: sub end_ol {
1677: my ($target,$token) = @_;
1678: my $currentstring = '';
1679: if ($target eq 'web') {
1680: $currentstring = $token->[2];
1681: } elsif ($target eq 'tex') {
1682: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1683: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1684: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1685: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1686: }
1687: return $currentstring;
1688: }
1689:
1690: #-- <dl> tag (end tag required)
1691: sub start_dl {
1692: my ($target,$token) = @_;
1693: my $currentstring = '';
1694: if ($target eq 'web') {
1695: $currentstring = $token->[4];
1696: } elsif ($target eq 'tex') {
1697: $currentstring = '\begin{description}';
1698: @Apache::londefdef::description=();
1699: $Apache::londefdef::DD_redirection=0;
1700: $Apache::londefdef::DT_redirection=0;
1701: }
1702: return $currentstring;
1703: }
1704:
1705: sub end_dl {
1706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1707: my $currentstring = '';
1708: if ($target eq 'web') {
1709: $currentstring = $token->[2];
1710: } elsif ($target eq 'tex') {
1711: if ($Apache::londefdef::DT_redirection) {
1712: my $data=&item_cleanup;
1713: push @Apache::londefdef::description,'\item['.$data.']';
1714: $Apache::londefdef::DT_redirection=0;
1715: } elsif ($Apache::londefdef::DD_redirection) {
1716: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1717: }
1718: foreach my $element (@Apache::londefdef::description) {
1719: $currentstring.=' '.$element.' ';
1720: }
1721: @Apache::londefdef::description=();
1722: $currentstring.='\end{description}';
1723: }
1724: return $currentstring;
1725: }
1726:
1727: #-- <dt> tag (end tag optional)
1728: sub start_dt {
1729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1730: my $currentstring='';
1731: if ($target eq 'web') {
1732: $currentstring = $token->[4];
1733: } elsif ($target eq 'tex') {
1734: if ($Apache::londefdef::DT_redirection) {
1735: my $data=&item_cleanup;
1736: push @Apache::londefdef::description,'\item['.$data.']';
1737: $Apache::londefdef::DT_redirection=0;
1738: } elsif ($Apache::londefdef::DD_redirection) {
1739: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1740: $Apache::londefdef::DD_redirection=0;
1741: }
1742: &Apache::lonxml::startredirection();
1743: $Apache::londefdef::DT_redirection=1;
1744: }
1745: return $currentstring;
1746: }
1747:
1748: sub end_dt {
1749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1750: my $currentstring = '';
1751: if ($target eq 'web') {
1752: $currentstring = $token->[2];
1753: } elsif ($target eq 'tex') {
1754: my $data=&item_cleanup;
1755: push @Apache::londefdef::description,'\item['.$data.']';
1756: $Apache::londefdef::DT_redirection=0;
1757: }
1758: return $currentstring;
1759: }
1760:
1761: sub item_cleanup {
1762: my $item=&Apache::lonxml::endredirection();
1763: $item=~s/\\begin{center}//g;
1764: $item=~s/\\end{center}//g;
1765: return $item;
1766: }
1767:
1768: #-- <dd> tag (end tag optional)
1769: sub start_dd {
1770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1771: my $currentstring = '';
1772: if ($target eq 'web') {
1773: $currentstring = $token->[4];
1774: } elsif ($target eq 'tex') {
1775: if ($Apache::londefdef::DT_redirection) {
1776: my $data=&item_cleanup;
1777: push @Apache::londefdef::description,'\item['.$data.']';
1778: $Apache::londefdef::DT_redirection=0;
1779: }
1780: $Apache::londefdef::DD_redirection=1;
1781: &Apache::lonxml::startredirection();
1782: }
1783: return $currentstring;
1784: }
1785:
1786: sub end_dd {
1787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1788: my $currentstring = '';
1789: if ($target eq 'web') {
1790: $currentstring = $token->[2];
1791: } elsif ($target eq 'tex') {
1792: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1793: $Apache::londefdef::DD_redirection=0;
1794: }
1795: return $currentstring;
1796: }
1797:
1798: #-- <table> tag (end tag required)
1799: #list of supported attributes: border,width,TeXwidth
1800: sub start_table {
1801: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1802: my ($textwidth,$currentstring)=('','');
1803: if ($target eq 'web') {
1804: $currentstring = $token->[4];
1805: } elsif ($target eq 'tex') {
1806: my $aa = {};
1807: push @Apache::londefdef::table, $aa;
1808: $Apache::londefdef::table[-1]{'row_number'} = -1;
1809: #maximum table's width (default coincides with text line length)
1810: if ($#Apache::londefdef::table==0) {
1811: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1812: $textwidth=~/(\d+\.?\d*)/;
1813: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1814: } else {
1815: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1816: #the maximum width of nested table is determined by LATeX width of parent cell
1817: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1818: } else {
1819: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1820: $textwidth=$Apache::londefdef::table[-2]{'width'};
1821: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1822: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1823: }
1824: }
1825: }
1826: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1827: if (not defined $TeXwidth) {
1828: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1829: if ($htmlwidth=~/%/) {
1830: $Apache::londefdef::table[-1]{'percent'}=1;
1831: $htmlwidth=~/(\d+)/;
1832: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1833: } else {
1834: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1835: }
1836: } elsif ($TeXwidth=~/%/) {
1837: $Apache::londefdef::table[-1]{'percent'}=1;
1838: $TeXwidth=~/(\d+)/;
1839: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1840: } else {
1841: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1842: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1843: }
1844: #table's border
1845: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1846: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1847: unless (defined $border) { $border = 0; }
1848: if ($border) {
1849: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1850: $Apache::londefdef::table[-1]{'vinc'} = '&';
1851: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1852: } else {
1853: $Apache::londefdef::table[-1]{'hinc'} = '';
1854: $Apache::londefdef::table[-1]{'vinc'} = '&';
1855: $Apache::londefdef::table[-1]{'vvinc'} = '';
1856: }
1857: if ($#Apache::londefdef::table==0) {
1858: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1859: }
1860: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1861: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1862: $Apache::londefdef::table[-1]{'objectlen'}=[];
1863: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1864: $Apache::londefdef::table[-1]{'maxlen'}=[];
1865: $Apache::londefdef::table[-1]{'minlen'}=[];
1866: $Apache::londefdef::table[-1]{'content'}=[];
1867: $Apache::londefdef::table[-1]{'align'}=[];
1868: $currentstring='\keephidden{NEW TABLE ENTRY}';
1869: }
1870: return $currentstring;
1871: }
1872:
1873: sub end_table {
1874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1875: my $currentstring = '';
1876: if ($target eq 'web') {
1877: $currentstring = $token->[2];
1878: } elsif ($target eq 'tex') {
1879: my $inmemory = '';
1880: my $output = '';
1881: my $WARNING='';
1882: #width of columns from TeXwidth attributes
1883: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1884: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1885: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1886: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1887: }
1888: }
1889: }
1890: #free space and number of empty columns
1891: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1892: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1893: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1894: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1895: $empty_columns++;
1896: } else {
1897: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1898: }
1899: }
1900: #boundaries for contents columns
1901: my @min_len=();#columns can not be narrower
1902: my @max_len=();#maximum length of column
1903: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1904: my ($localmin,$localmax)=(0,0);
1905: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1906: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1907: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1908: }
1909: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1910: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1911: }
1912: }
1913: push @min_len, $localmin;
1914: push @max_len, $localmax;
1915: }
1916: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1917: my $localmin=0,;
1918: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1919: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1920: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1921: }
1922: }
1923: if ($max_len[$jn]<$localmin) {
1924: $max_len[$jn]=$localmin;
1925: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1926: }#object size is bigger
1927: if ($min_len[$jn]<$localmin) {
1928: $min_len[$jn]=$localmin;
1929: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1930: }#object size is bigger
1931: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1932: $min_len[$jn]=0;
1933: $max_len[$jn]=0;
1934: }
1935: }
1936: #final adjustment of column width
1937: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1938: my @adjust=();
1939: #step 1. adjustment by maximum value
1940: my $space_neeeded=0;
1941: for (my $jn=0;$jn<=$#max_len;$jn++) {
1942: $space_neeeded=$space_neeeded+$max_len[$jn];
1943: }
1944: if ($space_neeeded<=$available_space) {
1945: for (my $jn=0;$jn<=$#max_len;$jn++) {
1946: if ($fwidth[$jn]==0) {
1947: $fwidth[$jn]=$max_len[$jn];
1948: }
1949: }
1950: } else {
1951: #step 2. adjustment by minimum value (estimation)
1952: $space_neeeded=0;
1953: for (my $jn=0;$jn<=$#min_len;$jn++) {
1954: $space_neeeded+=$min_len[$jn];
1955: }
1956: if ($space_neeeded>$available_space) {
1957: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1958: for (my $jn=0;$jn<=$#max_len;$jn++) {
1959: if ($fwidth[$jn]==0) {
1960: $fwidth[$jn]=$min_len[$jn];
1961: }
1962: }
1963: #check if we have objects which can be scaled
1964: my $how_many_to_scale=0;
1965: my @to_scale=();
1966: for (my $jn=0;$jn<=$#max_len;$jn++) {
1967: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1968: $how_many_to_scale++;
1969: push @to_scale, $jn;
1970: }
1971: }
1972: if ($how_many_to_scale>0) {
1973: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1974: foreach my $jn (@to_scale) {
1975: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1976: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1977: if ($1 ne '') {
1978: my $current_length=&recalc($1);
1979: $current_length=~/(\d+\.?\d*)/;
1980: $current_length=$current_length-$space_to_adjust;
1981: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1982: }
1983: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1984: if ($1 ne '') {
1985: my $current_length=$1;
1986: $current_length=$current_length-$space_to_adjust;
1987: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
1988: }
1989: }
1990: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
1991: }
1992: }
1993: } else {
1994: #step 3. adjustment over minimal + corrections
1995: my $enlarge_coef=$available_space/$space_neeeded;
1996: my $acsessive=0;
1997: for (my $jn=0;$jn<=$#min_len;$jn++) {
1998: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
1999: if ($adjust[$jn]>$max_len[$jn]) {
2000: $fwidth[$jn]=$max_len[$jn];
2001: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2002: $adjust[$jn]=0;
2003: }
2004: }
2005: if ($acsessive>0) {
2006: #we have an excess of space and can redistribute it
2007: my $notempty_columns=0;
2008: for (my $jn=0;$jn<=$#min_len;$jn++) {
2009: if ($adjust[$jn]!=0) {
2010: $notempty_columns++;
2011: }
2012: }
2013: my $per_column=$acsessive/$notempty_columns;
2014: for (my $jn=0;$jn<=$#min_len;$jn++) {
2015: if ($adjust[$jn]!=0) {
2016: $adjust[$jn]+=$per_column;
2017: $fwidth[$jn]=$adjust[$jn];
2018: }
2019: }
2020: } else {
2021: for (my $jn=0;$jn<=$#min_len;$jn++) {
2022: $fwidth[$jn]=$adjust[$jn];
2023: }
2024: }
2025: }
2026: }
2027: #use all available width if it is defined in % or as TeXwidth
2028: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2029: my $current=0;
2030: for (my $i=0;$i<=$#fwidth;$i++) {
2031: $current+=$fwidth[$i];
2032: }
2033: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2034: for (my $i=0;$i<=$#fwidth;$i++) {
2035: $fwidth[$i]*=$coef;
2036: }
2037: }
2038: #removing of empty columns if allowed
2039: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2040: if ($permission eq 'yes') {
2041: my @cleaned_table=();
2042: my @cleaned_header=();
2043: my $colind=0;
2044: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2045: if ($fwidth[$jn]!=0) {
2046: #we need to copy column
2047: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2048: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2049: $cleaned_header[$colind]=$fwidth[$jn];
2050: }
2051: $colind++;
2052: }
2053: }
2054: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2055: @fwidth=@cleaned_header;
2056: }
2057: #construct header of the table
2058: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2059: for (my $in=0;$in<=$#fwidth;$in++) {
2060: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2061: }
2062: $header_of_table .= '}';
2063: #fill the table
2064: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2065: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2066: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2067: $output.='\vspace*{-6 mm}\begin{center}';
2068: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2069: $output.=' \hfill \llap{'
2070: }
2071: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2072: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2073: $output.='\end{center}\vspace*{-6 mm}';
2074: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2075: $output.='} ';
2076: }
2077: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2078: }
2079: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2080: }
2081: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2082: if ($#Apache::londefdef::table > 0) {
2083: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2084: pop @Apache::londefdef::table;
2085: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2086: } else {
2087: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2088: pop @Apache::londefdef::table;
2089: undef @Apache::londefdef::table;
2090: }
2091: }
2092: return $currentstring;
2093: }
2094:
2095: #-- <tr> tag (end tag optional)
2096: sub start_tr {
2097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2098: my $currentstring = '';
2099: if ($target eq 'web') {
2100: $currentstring = $token->[4];
2101: } elsif ($target eq 'tex') {
2102: $Apache::londefdef::table[-1]{'row_number'}++;
2103: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2104: if ($alignchar ne '') {
2105: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2106: } else {
2107: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2108: }
2109: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2110: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2111: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2112: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2113: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2114: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2115: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2116: }
2117: return $currentstring;
2118: }
2119:
2120: sub end_tr {
2121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2122: my $currentstring = '';
2123: if ($target eq 'web') {
2124: $currentstring = $token->[2];
2125: } elsif ($target eq 'tex') {
2126: if ($Apache::londefdef::TD_redirection) {
2127: &end_td_tex($parstack,$parser,$safeeval);
2128: }
2129: }
2130: return $currentstring;
2131: }
2132:
2133: #-- <td> tag (end tag optional)
2134: sub start_td {
2135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2136: my $currentstring = '';
2137: if ($target eq 'web') {
2138: $currentstring = $token->[4];
2139: } elsif ($target eq 'tex') {
2140: $Apache::londefdef::TD_redirection = 1;
2141: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2142: }
2143: return $currentstring;
2144: }
2145:
2146: sub tag_check {
2147: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2148: my @ar=@$parstack;
2149: for (my $i=$#ar-1;$i>=0;$i--) {
2150: if (lc($$tagstack[$i]) eq $good_tag) {
2151: &start_td_tex($parstack,$parser,$safeeval);
2152: last;
2153: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2154: splice @ar, $i+1;
2155: &end_td_tex(\@ar,$parser,$safeeval);
2156: &start_td_tex($parstack,$parser,$safeeval);
2157: last;
2158: }
2159: }
2160: return '';
2161: }
2162:
2163: sub start_td_tex {
2164: my ($parstack,$parser,$safeeval) = @_;
2165: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2166: if ($alignchar eq '') {
2167: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2168: }
2169: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2170: $Apache::londefdef::table[-1]{'counter_columns'}++;
2171: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2172: if (defined $TeXwidth) {
2173: my $current_length=&recalc($TeXwidth);
2174: $current_length=~/(\d+\.?\d*)/;
2175: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2176: }
2177: &Apache::lonxml::startredirection();
2178: return '';
2179: }
2180:
2181: sub end_td_tex {
2182: my ($parstack,$parser,$safeeval) = @_;
2183: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2184: my $data=&Apache::lonxml::endredirection();
2185: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2186: if (defined $TeXwidth) {
2187: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2188: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2189: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2190: } else {
2191: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2192: my $garbage_data=$data;
2193: my $fwidth=0;
2194: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2195: my $current_length=&recalc($1);
2196: $current_length=~/(\d+\.?\d*)/;
2197: if ($fwidth<$1) {$fwidth=$1;}
2198: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2199: }
2200: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2201: my $current_length=$1;
2202: if ($fwidth<$current_length) {$fwidth=$current_length;}
2203: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2204: }
2205: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2207: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2208: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2209: } elsif ($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)*/) {
2210: my $garbage_data=$data;
2211: my $fwidth=0;
2212: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2213: my $current_length=&recalc($1);
2214: $current_length=~/(\d+\.?\d*)/;
2215: if ($fwidth<$1) {$fwidth=$1;}
2216: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2217: }
2218: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2219: my $current_length=&recalc($1);
2220: $current_length=~/(\d+\.?\d*)/;
2221: if ($fwidth<$1) {$fwidth=$1;}
2222: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2223: }
2224: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2225: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2226: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2227: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2228: $data=~s/\\\\\s*$//;
2229: } else {
2230: $data=~s/^\s+(\S.*)/$1/;
2231: $data=~s/(.*\S)\s+$/$1/;
2232: $data=~s/(\s)+/$1/;
2233: my ($current_length,$min_length)=(0,0);
2234: if ($data=~/\\vskip/) {
2235: my $newdata=$data;
2236: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2237: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2238: foreach my $elementdata (@newdata) {
2239: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2240: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2241: my @words=split(/ /,$elementdata);
2242: foreach my $word (@words) {
2243: my $lengthword=2.5*&LATEX_length($word);
2244: if ($min_length<$lengthword) {$min_length=$lengthword;}
2245: }
2246: }
2247: } else {
2248: $current_length=2.5*&LATEX_length($data);
2249: my @words=split(/ /,$data);
2250: foreach my $word (@words) {
2251: my $lengthword=2*&LATEX_length($word);
2252: if ($min_length<$lengthword) {$min_length=$lengthword;}
2253: }
2254: }
2255: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2256: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2257: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2258: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2259: }
2260: }
2261: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2262: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2263: }
2264: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2265: return'';
2266: }
2267:
2268: sub end_td {
2269: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2270: my $currentstring = '';
2271: if ($target eq 'web') {
2272: $currentstring = $token->[2];
2273: } elsif ($target eq 'tex') {
2274: $Apache::londefdef::TD_redirection =0;
2275: &end_td_tex($parstack,$parser,$safeeval);
2276: }
2277: return $currentstring;
2278: }
2279:
2280: #-- <th> tag (end tag optional)
2281: sub start_th {
2282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2283: my $currentstring = '';
2284: if ($target eq 'web') {
2285: $currentstring = $token->[4];
2286: } elsif ($target eq 'tex') {
2287: $Apache::londefdef::TD_redirection = 1;
2288: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2289: }
2290: return $currentstring;
2291: }
2292:
2293: sub tagg_check {
2294: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2295: my @ar=@$parstack;
2296: for (my $i=$#ar-1;$i>=0;$i--) {
2297: if (lc($$tagstack[$i]) eq $good_tag) {
2298: &start_th_tex($parstack,$parser,$safeeval);
2299: last;
2300: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2301: splice @ar, $i+1;
2302: &end_th_tex(\@ar,$parser,$safeeval);
2303: &start_th_tex($parstack,$parser,$safeeval);
2304: last;
2305: }
2306: }
2307: return '';
2308: }
2309:
2310: sub start_th_tex {
2311: my ($parstack,$parser,$safeeval) = @_;
2312: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2313: if ($alignchar eq '') {
2314: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2315: }
2316: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2317: $Apache::londefdef::table[-1]{'counter_columns'}++;
2318: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2319: if (defined $TeXwidth) {
2320: my $current_length=&recalc($TeXwidth);
2321: $current_length=~/(\d+\.?\d*)/;
2322: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2323: }
2324: &Apache::lonxml::startredirection();
2325: return '';
2326: }
2327:
2328: sub end_th_tex {
2329: my ($parstack,$parser,$safeeval) = @_;
2330: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2331: my $data=&Apache::lonxml::endredirection();
2332: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2333: if (defined $TeXwidth) {
2334: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2335: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2336: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2337: } else {
2338: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2339: my $garbage_data=$data;
2340: my $fwidth=0;
2341: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2342: my $current_length=&recalc($1);
2343: $current_length=~/(\d+\.?\d*)/;
2344: if ($fwidth<$1) {$fwidth=$1;}
2345: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2346: }
2347: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2348: my $current_length=$1;
2349: if ($fwidth<$current_length) {$fwidth=$current_length;}
2350: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2351: }
2352: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2354: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2355: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2356: } else {
2357: $data=~s/^\s+(\S.*)/$1/;
2358: $data=~s/(.*\S)\s+$/$1/;
2359: $data=~s/(\s)+/$1/;
2360: my ($current_length,$min_length)=(0,0);
2361: if ($data=~/\\vskip/) {
2362: my $newdata=$data;
2363: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2364: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2365: foreach my $elementdata (@newdata) {
2366: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2367: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2368: my @words=split(/ /,$elementdata);
2369: foreach my $word (@words) {
2370: my $lengthword=2.5*&LATEX_length($word);
2371: if ($min_length<$lengthword) {$min_length=$lengthword;}
2372: }
2373: }
2374: } else {
2375: $current_length=2.5*&LATEX_length($data);
2376: my @words=split(/ /,$data);
2377: foreach my $word (@words) {
2378: my $lengthword=2*&LATEX_length($word);
2379: if ($min_length<$lengthword) {$min_length=$lengthword;}
2380: }
2381: }
2382: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2383: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2384: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2385: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2386: }
2387: }
2388: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2389: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2390: }
2391: #make data bold
2392: $data='\textbf{'.$data.'}';
2393: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2394: return'';
2395: }
2396:
2397: sub end_th {
2398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2399: my $currentstring = '';
2400: if ($target eq 'web') {
2401: $currentstring = $token->[2];
2402: } elsif ($target eq 'tex') {
2403: $Apache::londefdef::TD_redirection =0;
2404: &end_th_tex($parstack,$parser,$safeeval);
2405: }
2406: return $currentstring;
2407: }
2408:
2409: #-- <img> tag (end tag forbidden)
2410: sub start_img {
2411: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2412: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2413: undef,1);
2414: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2415: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2416: return '';
2417: }
2418: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2419: my $currentstring = '';
2420: my $scaling = .3;
2421: if ($target eq 'web') {
2422: if ($ENV{'browser.imagesuppress'} ne 'on') {
2423: $currentstring.= $token->[4];
2424: } else {
2425: my $alttag= &Apache::lonxml::get_param
2426: ('alt',$parstack,$safeeval,undef,1);
2427: unless ($alttag) {
2428: $alttag=&Apache::lonmeta::alttag
2429: ($Apache::lonxml::pwd[-1],$src);
2430: }
2431: $currentstring.='[IMAGE: '.$alttag.']';
2432: }
2433: } elsif ($target eq 'tex') {
2434: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2435: #if original gif/jpg/png file exist do following:
2436: if (-e $src) {
2437: #what is the image size?
2438: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2439: my ($file,$path)=&file_path($src);
2440: my $newsrc = $src;
2441: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2442: $file=~s/\.(gif|jpg|png)$/.eps/i;
2443: #where can we find the picture?
2444: if (-e $newsrc) {
2445: #eps counterpart for image exist
2446: if ($path) {
2447: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2448: }
2449: } else {
2450: #there is no eps counterpart for image - check for ps one
2451: $newsrc =~ s/\.eps$/\.ps/;
2452: if (-e $newsrc) {
2453: #ps counterpart for image exist
2454: $file =~ s/\.eps$/\.ps/;
2455: if ($path) {
2456: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2457: }
2458: } else {
2459: #care about eps dynamical generation
2460: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2461: }
2462: }
2463: } else {
2464: #original image file doesn't exist so check the alt attribute
2465: my $alt =
2466: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2467: unless ($alt) {
2468: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2469: }
2470:
2471: if ($alt) {
2472: $currentstring .= ' '.$alt.' ';
2473: } else {
2474: #<allow> tag will care about replication
2475: }
2476: }
2477: } elsif ($target eq 'edit') {
2478: $currentstring .=&Apache::edit::tag_start($target,$token);
2479: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2480: &Apache::edit::browse('src',undef,'alt').' '.
2481: &Apache::edit::search('src',undef,'alt').'<br />';
2482: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2483: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2484: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2485: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2486: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2487: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2488: ['','bottom','middle','top','left','right'],$token,5);
2489: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2490: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2491: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2492: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2493: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2494: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2495: if ($width) { $currentstring.=' width="'.$width.'" '; }
2496: if ($height) { $currentstring.=' height="'.$height.'" '; }
2497: $currentstring .= ' />';
2498: } elsif ($target eq 'modified') {
2499: my ($osrc,$owidth,$oheight)=
2500: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2501: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2502: $safeeval,'src','alt','align',
2503: 'TeXwidth','TeXheight',
2504: 'width','height');
2505: my ($nsrc,$nwidth,$nheight)=
2506: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2507: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2508: &image_replication($loc);
2509: my ($iwidth,$iheight);
2510: if (-e $loc) {
2511: my $image = Image::Magick->new;
2512: $image->Read($loc);
2513: ($iwidth, $iheight) = ($image->Get('width'),
2514: $image->Get('height'));
2515: }
2516: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2517: # changed image or no size specified,
2518: # if they didn't explicitly change the
2519: # width or height use the ones from the image
2520: if ($iwidth && $iheight) {
2521: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2522: $token->[2]{'width'} = $iwidth;$ctag=1;
2523: }
2524: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2525: $token->[2]{'height'}=$iheight;$ctag=1;
2526: }
2527: }
2528: }
2529: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2530: # if we don't have a width or height
2531: if ($iwidth && $cwidth && !$cheight) {
2532: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2533: }
2534: if ($iheight && $cheight && !$cwidth) {
2535: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2536: }
2537: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2538: }
2539: return $currentstring;
2540: }
2541:
2542: sub end_img {
2543: my ($target,$token) = @_;
2544: my $currentstring = '';
2545: if ($target eq 'web') {
2546: $currentstring = $token->[2];
2547: } elsif ($target eq 'tex') {
2548: $currentstring = '';
2549: }
2550: return $currentstring;
2551: }
2552:
2553: #-- <applet> tag (end tag required)
2554: sub start_applet {
2555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2556:
2557: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2558: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2559:
2560: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2561: undef,1);
2562: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2563:
2564: my $currentstring = '';
2565: if ($target eq 'web') {
2566: if ($ENV{'browser.appletsuppress'} ne 'on') {
2567: $currentstring = $token->[4];
2568: } else {
2569: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2570: $safeeval,undef,1);
2571: unless ($alttag) {
2572: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2573: $code);
2574: }
2575: $currentstring='[APPLET: '.$alttag.']';
2576: }
2577: } elsif ($target eq 'tex') {
2578: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2579: $safeeval,undef,1);
2580: unless ($alttag) {
2581: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2582: undef,1);
2583: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2584: $code);
2585: }
2586: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2587: '.}\end{center}';
2588: }
2589: return $currentstring;
2590: }
2591:
2592: sub end_applet {
2593: my ($target,$token) = @_;
2594: my $currentstring = '';
2595: if ($target eq 'web') {
2596: $currentstring = $token->[2];
2597: } elsif ($target eq 'tex') {
2598: }
2599: return $currentstring;
2600: }
2601:
2602: #-- <embed> tag (end tag optional/required)
2603: sub start_embed {
2604: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2605: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2606: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2607: my $currentstring = '';
2608: if ($target eq 'web') {
2609: if ($ENV{'browser.embedsuppress'} ne 'on') {
2610: $currentstring = $token->[4];
2611: } else {
2612: my $alttag=&Apache::lonxml::get_param
2613: ('alt',$parstack,$safeeval,undef,1);
2614: unless ($alttag) {
2615: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2616: }
2617: $currentstring='[EMBED: '.$alttag.']';
2618: }
2619: } elsif ($target eq 'tex') {
2620: }
2621: return $currentstring;
2622: }
2623:
2624: sub end_embed {
2625: my ($target,$token) = @_;
2626: my $currentstring = '';
2627: if ($target eq 'web') {
2628: $currentstring = $token->[2];
2629: } elsif ($target eq 'tex') {
2630: }
2631: return $currentstring;
2632: }
2633:
2634: #-- <param> tag (end tag forbidden)
2635: sub start_param {
2636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2637: if (&Apache::lonxml::get_param
2638: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2639: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2640: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2641: }
2642: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2643: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2644: my $currentstring = '';
2645: if ($target eq 'web') {
2646: $currentstring = $token->[4];
2647: } elsif ($target eq 'tex') {
2648: }
2649: return $currentstring;
2650: }
2651:
2652: sub end_param {
2653: my ($target,$token) = @_;
2654: my $currentstring = '';
2655: if ($target eq 'web') {
2656: $currentstring = $token->[2];
2657: } elsif ($target eq 'tex') {
2658: }
2659: return $currentstring;
2660: }
2661:
2662: #-- <allow> tag
2663: sub start_allow {
2664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2665: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2666: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2667: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2668: &Apache::lonnet::clutter($src);
2669: &image_replication($src);
2670: my $result;
2671: if ($target eq 'edit') {
2672: $result .=&Apache::edit::tag_start($target,$token);
2673: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2674: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2675: } elsif ($target eq 'modified') {
2676: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2677: $safeeval,'src');
2678: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2679: }
2680: return $result;
2681: }
2682:
2683: sub end_allow {
2684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2685: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2686: return '';
2687: }
2688:
2689: #-- Frames (end tag required)
2690: #-- <frameset>
2691: sub start_frameset {
2692: my ($target,$token) = @_;
2693: my $currentstring = '';
2694: if ($target eq 'web') {
2695: if (!$Apache::lonxml::registered &&
2696: $ENV{'request.state'} eq 'published') {
2697: $currentstring.='<head>'.
2698: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2699: }
2700: my $onLoad='';
2701: foreach my $key (keys(%{$token->[2]})) {
2702: if ($key =~ /^onload$/i) {
2703: $onLoad.=$token->[2]->{$key}.';';
2704: delete($token->[2]->{$key});
2705: }
2706: }
2707: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2708: my $onUnload='';
2709: foreach my $key (keys(%{$token->[2]})) {
2710: if ($key =~ /^onunload$/i) {
2711: $onUnload.=$token->[2]->{$key}.';';
2712: delete($token->[2]->{$key});
2713: }
2714: }
2715: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2716: ';'.$onUnload;
2717:
2718: $currentstring .= '<'.$token->[1];
2719: foreach (keys %{$token->[2]}) {
2720: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2721: }
2722: $currentstring.='>';
2723: }
2724: return $currentstring;
2725: }
2726:
2727: sub end_frameset {
2728: my ($target,$token) = @_;
2729: my $currentstring = '';
2730: if ($target eq 'web') {
2731: $currentstring = $token->[2];
2732: }
2733: return $currentstring;
2734: }
2735:
2736: #-- <xmp> (end tag required)
2737: sub start_xmp {
2738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2739: my $currentstring = '';
2740: if ($target eq 'web') {
2741: $currentstring .= $token->[4];
2742: } elsif ($target eq 'tex') {
2743: $currentstring .= '\begin{verbatim}';
2744: }
2745: return $currentstring;
2746: }
2747:
2748: sub end_xmp {
2749: my ($target,$token) = @_;
2750: my $currentstring = '';
2751: if ($target eq 'web') {
2752: $currentstring .= $token->[2];
2753: } elsif ($target eq 'tex') {
2754: $currentstring .= '\end{verbatim}';
2755: }
2756: return $currentstring;
2757: }
2758:
2759: #-- <pre> (end tag required)
2760: sub start_pre {
2761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2762: my $currentstring = '';
2763: if ($target eq 'web') {
2764: $currentstring .= $token->[4];
2765: } elsif ($target eq 'tex') {
2766: $currentstring .= '\begin{verbatim}';
2767: }
2768: return $currentstring;
2769: }
2770:
2771: sub end_pre {
2772: my ($target,$token) = @_;
2773: my $currentstring = '';
2774: if ($target eq 'web') {
2775: $currentstring .= $token->[2];
2776: } elsif ($target eq 'tex') {
2777: $currentstring .= '\end{verbatim}';
2778: }
2779: return $currentstring;
2780: }
2781:
2782: #-- <insert>
2783: sub start_insert {
2784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2785: my $currentstring = '';
2786: if ($target eq 'web') {
2787: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2788: $currentstring .= '<b>'.$display.'</b>';;
2789: }
2790: return $currentstring;
2791: }
2792:
2793: sub end_insert {
2794: my ($target,$token) = @_;
2795: my $currentstring = '';
2796: if ($target eq 'web') {
2797: $currentstring .= '';
2798: }
2799: return $currentstring;
2800: }
2801:
2802: #-- <externallink>
2803: sub start_externallink {
2804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2805: my $currentstring = '';
2806: if ($target eq 'web') {
2807: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2808: $currentstring .= '<b>'.$display.'</b>';;
2809: }
2810: return $currentstring;
2811: }
2812:
2813: sub end_externallink {
2814: my ($target,$token) = @_;
2815: my $currentstring = '';
2816: if ($target eq 'web') {
2817: $currentstring .= '';
2818: }
2819: return $currentstring;
2820: }
2821:
2822: #-- <blankspace heigth="">
2823: sub start_blankspace {
2824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2825: my $currentstring = '';
2826: if ($target eq 'tex') {
2827: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2828: $currentstring .= '\vskip '.$howmuch.' ';
2829: }
2830: return $currentstring;
2831: }
2832:
2833: sub end_blankspace {
2834: my ($target,$token) = @_;
2835: my $currentstring = '';
2836: if ($target eq 'tex') {
2837: $currentstring .= '';
2838: }
2839: return $currentstring;
2840: }
2841:
2842: #-- <abbr> tag (end tag required)
2843: sub start_abbr {
2844: my ($target,$token) = @_;
2845: my $currentstring = '';
2846: if ($target eq 'web') {
2847: $currentstring = $token->[4];
2848: }
2849: return $currentstring;
2850: }
2851:
2852: sub end_abbr {
2853: my ($target,$token) = @_;
2854: my $currentstring = '';
2855: if ($target eq 'web') {
2856: $currentstring = $token->[2];
2857: }
2858: return $currentstring;
2859: }
2860:
2861: #-- <acronym> tag (end tag required)
2862: sub start_acronym {
2863: my ($target,$token) = @_;
2864: my $currentstring = '';
2865: if ($target eq 'web') {
2866: $currentstring = $token->[4];
2867: }
2868: return $currentstring;
2869: }
2870:
2871: sub end_acronym {
2872: my ($target,$token) = @_;
2873: my $currentstring = '';
2874: if ($target eq 'web') {
2875: $currentstring = $token->[2];
2876: }
2877: return $currentstring;
2878: }
2879:
2880: #-- <area> tag (end tag forbidden)
2881: sub start_area {
2882: my ($target,$token) = @_;
2883: my $currentstring = '';
2884: if ($target eq 'web') {
2885: $currentstring = $token->[4];
2886: }
2887: return $currentstring;
2888: }
2889:
2890: sub end_area {
2891: my ($target,$token) = @_;
2892: my $currentstring = '';
2893: if ($target eq 'web') {
2894: $currentstring = $token->[2];
2895: }
2896: return $currentstring;
2897: }
2898:
2899: #-- <base> tag (end tag forbidden)
2900: sub start_base {
2901: my ($target,$token) = @_;
2902: my $currentstring = '';
2903: if ($target eq 'web') {
2904: $currentstring = $token->[4];
2905: }
2906: return $currentstring;
2907: }
2908:
2909: sub end_base {
2910: my ($target,$token) = @_;
2911: my $currentstring = '';
2912: if ($target eq 'web') {
2913: $currentstring = $token->[2];
2914: }
2915: return $currentstring;
2916: }
2917:
2918: #-- <bdo> tag (end tag required)
2919: sub start_bdo {
2920: my ($target,$token) = @_;
2921: my $currentstring = '';
2922: if ($target eq 'web') {
2923: $currentstring = $token->[4];
2924: }
2925: return $currentstring;
2926: }
2927:
2928: sub end_bdo {
2929: my ($target,$token) = @_;
2930: my $currentstring = '';
2931: if ($target eq 'web') {
2932: $currentstring = $token->[2];
2933: }
2934: return $currentstring;
2935: }
2936:
2937: #-- <bgsound> tag (end tag optional)
2938: sub start_bgsound {
2939: my ($target,$token) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web') {
2942: $currentstring = $token->[4];
2943: }
2944: return $currentstring;
2945: }
2946:
2947: sub end_bgsound {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'web') {
2951: $currentstring = $token->[2];
2952: }
2953: return $currentstring;
2954: }
2955:
2956: #-- <blink> tag (end tag required)
2957: sub start_blink {
2958: my ($target,$token) = @_;
2959: my $currentstring = '';
2960: if ($target eq 'web') {
2961: $currentstring = $token->[4];
2962: }
2963: return $currentstring;
2964: }
2965:
2966: sub end_blink {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[2];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: #-- <blockquote> tag (end tag required)
2976: sub start_blockquote {
2977: my ($target,$token) = @_;
2978: my $currentstring = '';
2979: if ($target eq 'web') {
2980: $currentstring = $token->[4];
2981: }
2982: return $currentstring;
2983: }
2984:
2985: sub end_blockquote {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[2];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: #-- <button> tag (end tag required)
2995: sub start_button {
2996: my ($target,$token) = @_;
2997: my $currentstring = '';
2998: if ($target eq 'web') {
2999: $currentstring = $token->[4];
3000: }
3001: return $currentstring;
3002: }
3003:
3004: sub end_button {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[2];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: #-- <caption> tag (end tag required)
3014: sub start_caption {
3015: my ($target,$token) = @_;
3016: my $currentstring = '';
3017: if ($target eq 'web') {
3018: $currentstring = $token->[4];
3019: }
3020: return $currentstring;
3021: }
3022:
3023: sub end_caption {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[2];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: #-- <col> tag (end tag forbdden)
3033: sub start_col {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[4];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_col {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[2];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: #-- <colgroup> tag (end tag optional)
3052: sub start_colgroup {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[4];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_colgroup {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <del> tag (end tag required)
3071: sub start_del {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[4];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: sub end_del {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[2];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: #-- <fieldset> tag (end tag required)
3090: sub start_fieldset {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[4];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_fieldset {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[2];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: #-- <frame> tag (end tag forbidden)
3109: sub start_frame {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[4];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: sub end_frame {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[2];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: #-- <iframe> tag (end tag required)
3128: sub start_iframe {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[4];
3133: }
3134: return $currentstring;
3135: }
3136:
3137: sub end_iframe {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[2];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: #-- <ins> tag (end tag required)
3147: sub start_ins {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web') {
3151: $currentstring = $token->[4];
3152: }
3153: return $currentstring;
3154: }
3155:
3156: sub end_ins {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[2];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: #-- <isindex> tag (end tag forbidden)
3166: sub start_isindex {
3167: my ($target,$token) = @_;
3168: my $currentstring = '';
3169: if ($target eq 'web') {
3170: $currentstring = $token->[4];
3171: }
3172: return $currentstring;
3173: }
3174:
3175: sub end_isindex {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[2];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: #-- <keygen> tag (end tag forbidden)
3185: sub start_keygen {
3186: my ($target,$token) = @_;
3187: my $currentstring = '';
3188: if ($target eq 'web') {
3189: $currentstring = $token->[4];
3190: }
3191: return $currentstring;
3192: }
3193:
3194: sub end_keygen {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[2];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: #-- <label> tag
3204: sub start_label {
3205: my ($target,$token) = @_;
3206: my $currentstring = '';
3207: if ($target eq 'web') {
3208: $currentstring = $token->[4];
3209: }
3210: return $currentstring;
3211: }
3212:
3213: sub end_label {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[2];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: #-- <layer> tag (end tag required)
3223: sub start_layer {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'web') {
3227: $currentstring = $token->[4];
3228: }
3229: return $currentstring;
3230: }
3231:
3232: sub end_layer {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[2];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: #-- <legend> tag (end tag required)
3242: sub start_legend {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web') {
3246: $currentstring = $token->[4];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: sub end_legend {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[2];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: #-- <link> tag (end tag forbidden)
3261: sub start_link {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web') {
3265: $currentstring = $token->[4];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: sub end_link {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[2];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: #-- <marquee> tag (end tag optional)
3280: sub start_marquee {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web') {
3284: $currentstring = $token->[4];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: sub end_marquee {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[2];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: #-- <multicol> tag (end tag required)
3299: sub start_multicol {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web') {
3303: $currentstring = $token->[4];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: sub end_multicol {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[2];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: #-- <nobr> tag (end tag required)
3318: sub start_nobr {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[4];
3323: } elsif ($target eq 'tex') {
3324: $currentstring='\mbox{';
3325: }
3326: return $currentstring;
3327: }
3328:
3329: sub end_nobr {
3330: my ($target,$token) = @_;
3331: my $currentstring = '';
3332: if ($target eq 'web') {
3333: $currentstring = $token->[2];
3334: } elsif ($target eq 'tex') {
3335: $currentstring='}';
3336: }
3337: return $currentstring;
3338: }
3339:
3340: #-- <noembed> tag (end tag required)
3341: sub start_noembed {
3342: my ($target,$token) = @_;
3343: my $currentstring = '';
3344: if ($target eq 'web') {
3345: $currentstring = $token->[4];
3346: }
3347: return $currentstring;
3348: }
3349:
3350: sub end_noembed {
3351: my ($target,$token) = @_;
3352: my $currentstring = '';
3353: if ($target eq 'web') {
3354: $currentstring = $token->[2];
3355: }
3356: return $currentstring;
3357: }
3358:
3359: #-- <noframes> tag (end tag required)
3360: sub start_noframes {
3361: my ($target,$token) = @_;
3362: my $currentstring = '';
3363: if ($target eq 'web') {
3364: $currentstring = $token->[4];
3365: }
3366: return $currentstring;
3367: }
3368:
3369: sub end_noframes {
3370: my ($target,$token) = @_;
3371: my $currentstring = '';
3372: if ($target eq 'web') {
3373: $currentstring = $token->[2];
3374: }
3375: return $currentstring;
3376: }
3377:
3378: #-- <nolayer> tag (end tag required)
3379: sub start_nolayer {
3380: my ($target,$token) = @_;
3381: my $currentstring = '';
3382: if ($target eq 'web') {
3383: $currentstring = $token->[4];
3384: }
3385: return $currentstring;
3386: }
3387:
3388: sub end_nolayer {
3389: my ($target,$token) = @_;
3390: my $currentstring = '';
3391: if ($target eq 'web') {
3392: $currentstring = $token->[2];
3393: }
3394: return $currentstring;
3395: }
3396:
3397: #-- <noscript> tag (end tag required)
3398: sub start_noscript {
3399: my ($target,$token) = @_;
3400: my $currentstring = '';
3401: if ($target eq 'web') {
3402: $currentstring = $token->[4];
3403: }
3404: return $currentstring;
3405: }
3406:
3407: sub end_noscript {
3408: my ($target,$token) = @_;
3409: my $currentstring = '';
3410: if ($target eq 'web') {
3411: $currentstring = $token->[2];
3412: }
3413: return $currentstring;
3414: }
3415:
3416: #-- <object> tag (end tag required)
3417: sub start_object {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web') {
3421: $currentstring = $token->[4];
3422: }
3423: return $currentstring;
3424: }
3425:
3426: sub end_object {
3427: my ($target,$token) = @_;
3428: my $currentstring = '';
3429: if ($target eq 'web') {
3430: $currentstring = $token->[2];
3431: }
3432: return $currentstring;
3433: }
3434:
3435: #-- <optgroup> tag (end tag required)
3436: sub start_optgroup {
3437: my ($target,$token) = @_;
3438: my $currentstring = '';
3439: if ($target eq 'web') {
3440: $currentstring = $token->[4];
3441: }
3442: return $currentstring;
3443: }
3444:
3445: sub end_optgroup {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web') {
3449: $currentstring = $token->[2];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <samp> tag (end tag required)
3455: sub start_samp {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web') {
3459: $currentstring = $token->[4];
3460: } elsif ($target eq 'tex') {
3461: $currentstring='\texttt{';
3462: }
3463: return $currentstring;
3464: }
3465:
3466: sub end_samp {
3467: my ($target,$token) = @_;
3468: my $currentstring = '';
3469: if ($target eq 'web') {
3470: $currentstring = $token->[2];
3471: } elsif ($target eq 'tex') {
3472: $currentstring='}';
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <server> tag
3478: sub start_server {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_server {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <spacer> tag (end tag forbidden)
3497: sub start_spacer {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_spacer {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <span> tag (end tag required)
3516: sub start_span {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_span {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <tbody> tag (end tag optional)
3535: sub start_tbody {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_tbody {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <tfoot> tag (end tag optional)
3554: sub start_tfoot {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web') {
3558: $currentstring = $token->[4];
3559: }
3560: return $currentstring;
3561: }
3562:
3563: sub end_tfoot {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web') {
3567: $currentstring = $token->[2];
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <thead> tag (end tag optional)
3573: sub start_thead {
3574: my ($target,$token) = @_;
3575: my $currentstring = '';
3576: if ($target eq 'web') {
3577: $currentstring = $token->[4];
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_thead {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web') {
3586: $currentstring = $token->[2];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <var> tag
3592: sub start_var {
3593: my ($target,$token) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web') {
3596: $currentstring = $token->[4];
3597: } elsif ($target eq 'tex') {
3598: $currentstring = '\textit{';
3599: }
3600: return $currentstring;
3601: }
3602:
3603: sub end_var {
3604: my ($target,$token) = @_;
3605: my $currentstring = '';
3606: if ($target eq 'web') {
3607: $currentstring = $token->[2];
3608: } elsif ($target eq 'tex') {
3609: $currentstring = '}';
3610: }
3611: return $currentstring;
3612: }
3613:
3614: #-- <wbr> tag (end tag forbidden)
3615: sub start_wbr {
3616: my ($target,$token) = @_;
3617: my $currentstring = '';
3618: if ($target eq 'web') {
3619: $currentstring = $token->[4];
3620: }
3621: return $currentstring;
3622: }
3623:
3624: sub end_wbr {
3625: my ($target,$token) = @_;
3626: my $currentstring = '';
3627: if ($target eq 'web') {
3628: $currentstring = $token->[2];
3629: }
3630: return $currentstring;
3631: }
3632:
3633: #-- <hideweboutput> tag
3634: sub start_hideweboutput {
3635: my ($target,$token) = @_;
3636: if ($target eq 'web') {
3637: &Apache::lonxml::startredirection();
3638: }
3639: return '';
3640: }
3641:
3642: sub end_hideweboutput {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web') {
3646: $currentstring = &Apache::lonxml::endredirection();
3647: }
3648: return '';
3649: }
3650:
3651:
3652: sub image_replication {
3653: my $src = shift;
3654: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3655: #replicates eps or ps
3656: my $epssrc = my $pssrc = $src;
3657: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3658: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3659: if (not -e $epssrc && not -e $pssrc) {
3660: my $result=&Apache::lonnet::repcopy($epssrc);
3661: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3662: }
3663: return '';
3664: }
3665:
3666: sub image_size {
3667: my ($src,$scaling,$parstack,$safeeval)=@_;
3668: #size of image from gif/jpg/jpeg/png
3669: my $image = Image::Magick->new;
3670: my $current_figure = $image->Read($src);
3671: my $width_param = $image->Get('width') * $scaling;;
3672: my $height_param = $image->Get('height') * $scaling;;
3673: undef $image;
3674: #do we have any specified LaTeX size of the picture?
3675: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3676: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3677: #do we have any specified web size of the picture?
3678: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3679: undef,1);
3680: if ($TeXwidth ne '') {
3681: if ($TeXwidth=~/(\d+)\s*\%/) {
3682: $width_param = $1*$ENV{'form.textwidth'}/100;
3683: } else {
3684: $width_param = $TeXwidth;
3685: }
3686: } elsif ($TeXheight ne '') {
3687: $width_param = $TeXheight/$height_param*$width_param;
3688: } elsif ($width ne '') {
3689: $width_param = $width*$scaling;
3690: }
3691: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3692: return $width_param;
3693: }
3694:
3695: sub eps_generation {
3696: my ($src,$file,$width_param) = @_;
3697: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3698: my $temp_file = Apache::File->new('>>'.$filename);
3699: print $temp_file "$src\n";
3700: my $newsrc = $src;
3701: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3702: $newsrc=~s/\/home\/httpd\/html\/res//;
3703: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3704: $newsrc=~s/\/\.\//\//;
3705: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3706: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3707: $newsrc=~s/\/home\/httpd\/lonUsers//;
3708: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3709: }
3710: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3711: }
3712:
3713: sub file_path {
3714: my $src=shift;
3715: my ($file,$path);
3716: if ($src =~ m!(.*)/([^/]*)$!) {
3717: $file = $2;
3718: $path = $1.'/';
3719: }
3720: return $file,$path;
3721: }
3722:
3723: sub recalc {
3724: my $argument = shift;
3725: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3726: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3727: my $value=$1;
3728: my $units=$2;
3729: if ($units eq 'cm') {
3730: $value*=10;
3731: } elsif ($units eq 'in') {
3732: $value*=25.4;
3733: } elsif ($units eq 'pc') {
3734: $value*=(25.4*12/72.27);
3735: } elsif ($units eq 'pt') {
3736: $value*=(25.4/72.27);
3737: }
3738: return $value.' mm';
3739: }
3740:
3741: sub LATEX_length {
3742: my $garbage=shift;
3743: $garbage=~s/^\s+$//;
3744: $garbage=~s/^\s+(\S.*)/$1/;#space before
3745: $garbage=~s/(.*\S)\s+$/$1/;#space after
3746: $garbage=~s/(\s)+/$1/;#only one space
3747: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3748: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3749: $garbage=~s/([^\\])\$/$1/g;#$
3750: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3751: $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;
3752: $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;
3753: $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;
3754: $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;
3755: $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;
3756: $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;
3757: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3758: #remove some other LaTeX command
3759: $garbage=~s|\\(\w+)\\|\\|g;
3760: $garbage=~s|\\(\w+)(\s*)|$2|g;
3761: $garbage=~s|\+|11|g;
3762: my $value=length($garbage);
3763: return $value;
3764: }
3765:
3766:
3767:
3768:
3769: 1;
3770: __END__
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