1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.204 2004/03/31 05:24:00 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: @Apache::londefdef::description=();
67: $Apache::londefdef::DD_redirection=0;
68: $Apache::londefdef::DT_redirection=0;
69: }
70:
71: #======================= TAG SUBROUTINES =====================
72: #-- <output>
73: sub start_output {
74: my ($target) = @_;
75: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
76: return '';
77: }
78: sub end_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
81: return '';
82: }
83: #-- <m> tag
84: sub start_m {
85: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
86: my $currentstring = '';
87: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
88: if ($target eq 'web' || $target eq 'analyze') {
89: $Apache::lonxml::prevent_entity_encode++;
90: $inside ='\\documentstyle{article}'.$inside;
91: &Apache::lonxml::debug("M is starting with:$inside:");
92: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
93: if ($eval eq 'on') {
94: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
95: #&Apache::lonxml::debug("M is evaulated to:$inside:");
96: }
97: $currentstring = &Apache::lontexconvert::converted(\$inside);
98: if ($Apache::lontexconvert::errorstring) {
99: &Apache::lonxml::warning("tth error: ".
100: $Apache::lontexconvert::errorstring);
101: $Apache::lontexconvert::errorstring='';
102: }
103: #&Apache::lonxml::debug("M is ends with:$currentstring:");
104: $Apache::lonxml::post_evaluate=0;
105: } elsif ($target eq 'tex') {
106: $currentstring = $inside;
107: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
108: if ($eval eq 'on') {
109: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
110: }
111: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
112: $Apache::lonxml::post_evaluate=0;
113: }
114: return $currentstring;
115: }
116:
117: sub end_m {
118: my ($target,$token) = @_;
119: my $currentstring = '';
120: if ($target eq 'tex') {
121: $currentstring = "";
122: }
123: return $currentstring;
124: }
125:
126: sub start_tthoption {
127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
128: my $result;
129: if ($target eq 'web') {
130: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
131: $inside=~s/^\s*//;
132: if ($ENV{'browser.mathml'}) {
133: &tth::ttmoptions($inside);
134: } else {
135: &tth::tthoptions($inside);
136: }
137: }
138: return $result;
139: }
140:
141: sub end_tthoption {
142: my ($target,$token) = @_;
143: my $result;
144: return $result;
145: }
146:
147: #-- <html> tag (end tag optional)
148: sub start_html {
149: my ($target,$token) = @_;
150: my $currentstring = '';
151: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
152: &Apache::lontexconvert::init_tth();
153: if ($target eq 'web' || $target eq 'edit') {
154: $currentstring = &Apache::lonxml::xmlbegin().
155: &Apache::lonxml::fontsettings();
156: } elsif ($target eq 'tex') {
157: @Apache::londefdef::table = ();
158: $currentstring .= '\documentclass[letterpaper]{article}';
159: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
160: $currentstring .= '\newcommand{\keephidden}[1]{}
161: \renewcommand{\deg}{$^{\circ}$}
162: \usepackage{longtable}
163: \usepackage{textcomp}
164: \usepackage{makeidx}
165: \usepackage[dvips]{graphicx}
166: \usepackage{epsfig}\usepackage{calc}
167: \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}}
168: \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}}';
169: }
170: return $currentstring;
171: }
172:
173: sub end_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web') {
177: $currentstring = &Apache::lonxml::xmlend();
178: }
179: return $currentstring;
180: }
181:
182: #-- <head> tag (end tag optional)
183: sub start_head {
184: my ($target,$token) = @_;
185: my $currentstring = '';
186: if ($target eq 'web') {
187: $currentstring = $token->[4];
188: }
189: return $currentstring;
190: }
191:
192: sub end_head {
193: my ($target,$token) = @_;
194: my $currentstring = '';
195: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
196: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
197: $token->[2];
198: }
199: return $currentstring;
200: }
201:
202: #-- <map> tag (end tag required)
203: sub start_map {
204: my ($target,$token) = @_;
205: my $currentstring = '';
206: if ($target eq 'web') {
207: $currentstring = $token->[4];
208: }
209: return $currentstring;
210: }
211:
212: sub end_map {
213: my ($target,$token) = @_;
214: my $currentstring = '';
215: if ($target eq 'web') {
216: $currentstring = $token->[2];
217: }
218: return $currentstring;
219: }
220:
221: #-- <select> tag (end tag required)
222: sub start_select {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web') {
226: $currentstring = $token->[4];
227: } elsif ($target eq 'tex') {
228: $Apache::londefdef::select=0;
229: }
230: return $currentstring;
231: }
232:
233: sub end_select {
234: my ($target,$token) = @_;
235: my $currentstring = '';
236: if ($target eq 'web') {
237: $currentstring = $token->[2];
238: }
239: return $currentstring;
240: }
241:
242: #-- <option> tag (end tag optional)
243: sub start_option {
244: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
245: my $currentstring = '';
246: if ($target eq 'web') {
247: $currentstring = $token->[4];
248: } elsif ($target eq 'tex') {
249: $Apache::londefdef::select++;
250: if ($Apache::londefdef::select == 1) {
251: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
252: } else {
253: $currentstring='\keephidden{';
254: }
255: }
256: return $currentstring;
257: }
258:
259: sub end_option {
260: my ($target,$token) = @_;
261: my $currentstring = '';
262: if ($target eq 'web') {
263: $currentstring = $token->[2];
264: } elsif ($target eq 'tex') {
265: $currentstring='}';
266: }
267: return $currentstring;
268: }
269:
270: #-- <input> tag (end tag forbidden)
271: sub start_input {
272: my ($target,$token) = @_;
273: my $currentstring = '';
274: if ($target eq 'web') {
275: $currentstring = $token->[4];
276: }
277: return $currentstring;
278: }
279:
280: sub end_input {
281: my ($target,$token) = @_;
282: my $currentstring = '';
283: if ($target eq 'web') {
284: $currentstring = $token->[2];
285: }
286: return $currentstring;
287: }
288:
289: #-- <textarea> tag (end tag required)
290: sub start_textarea {
291: my ($target,$token) = @_;
292: my $currentstring = '';
293: if ($target eq 'web') {
294: $currentstring = $token->[4];
295: }
296: return $currentstring;
297: }
298:
299: sub end_textarea {
300: my ($target,$token) = @_;
301: my $currentstring = '';
302: if ($target eq 'web') {
303: $currentstring = $token->[2];
304: }
305: return $currentstring;
306: }
307:
308: #-- <form> tag (end tag required)
309: sub start_form {
310: my ($target,$token) = @_;
311: my $currentstring = '';
312: if ($target eq 'web') {
313: $currentstring = $token->[4];
314: }
315: return $currentstring;
316: }
317:
318: sub end_form {
319: my ($target,$token) = @_;
320: my $currentstring = '';
321: if ($target eq 'web') {
322: $currentstring = $token->[2];
323: }
324: return $currentstring;
325: }
326:
327: #-- <title> tag (end tag required)
328: sub start_title {
329: my ($target,$token) = @_;
330: my $currentstring = '';
331: if ($target eq 'web') {
332: $currentstring = $token->[4];
333: } elsif ($target eq 'tex') {
334: $currentstring .= '\keephidden{Title of the document: '
335: }
336: if ($target eq 'meta') {
337: $currentstring='<title>';
338: &start_output($target);
339: }
340: return $currentstring;
341: }
342:
343: sub end_title {
344: my ($target,$token) = @_;
345: my $currentstring = '';
346: if ($target eq 'web') {
347: $currentstring = $token->[2];
348: } elsif ($target eq 'tex') {
349: $currentstring .= '}';
350: }
351: if ($target eq 'meta') {
352: &end_output($target);
353: $currentstring='</title>';
354: }
355: return $currentstring;
356: }
357:
358: #-- <meta> tag (end tag forbidden)
359: sub start_meta {
360: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
361: my $currentstring = '';
362: if ($target eq 'web') {
363: my $args='';
364: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
365: if ($args eq '') {
366: &Apache::lonxml::get_all_text("/meta",$parser);
367: } else {
368: $currentstring = $token->[4];
369: }
370: } elsif ($target eq 'meta') {
371: unless (&Apache::lonxml::get_param
372: ('http-equiv',$parstack,$safeeval,undef,1)) {
373: my $name=$token->[2]->{'name'};
374: $name=~tr/A-Z/a-z/;
375: $name=~s/\s/\_/gs;
376: $name=~s/\W//gs;
377: if ($name) {
378: $currentstring='<'.$name;
379: my $display=&Apache::lonxml::get_param
380: ('display',$parstack,$safeeval,undef,1);
381: if ($display) {
382: $display=~s/\"/\'/g;
383: $currentstring.=' display="'.$display.'"';
384: }
385: $currentstring.='>'.
386: &Apache::lonxml::get_param
387: ('content',$parstack,$safeeval,undef,1).
388: '</'.$name.'>';
389: }
390: my $display=&Apache::lonxml::get_param
391: ('display',$parstack,$safeeval,undef,1);
392: if ($display) {
393: $display=&HTML::Entities::encode($display,'<>&"');
394: $currentstring.='<'.$name.'.display>'.$display.
395: '</'.$name.'.display>';
396: }
397: }
398: } elsif ($target eq 'tex') {
399: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
400: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
401: if ((not defined $content) && (not defined $name)) {
402: &Apache::lonxml::startredirection();
403: }
404: }
405: return $currentstring;
406: }
407:
408: sub end_meta {
409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
410: my $currentstring = '';
411: if ($target eq 'web') {
412: my $args='';
413: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
414: if ($args ne '') {
415: $currentstring = $token->[4];
416: }
417: } elsif ($target eq 'tex') {
418: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
419: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
420: if ((not defined $content) && (not defined $name)) {
421: &Apache::lonxml::endredirection();
422: }
423: }
424: return $currentstring;
425: }
426:
427: # accessrule
428: sub start_accessrule {
429: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
430: my $currentstring = '';
431: my $eff=&Apache::lonxml::get_param
432: ('effect',$parstack,$safeeval,undef,1);
433: my $realm=&Apache::lonxml::get_param
434: ('realm',$parstack,$safeeval,undef,1);
435: my $role=&Apache::lonxml::get_param
436: ('role',$parstack,$safeeval,undef,1);
437: $realm=~s/\s+//g;
438: $realm=~s/\//\_/g;
439: $realm=~s/^\_//;
440: $realm=~s/\W/\;/g;
441: $role=~s/\s+//g;
442: $role=~s/\//\_/g;
443: $role=~s/\W/\;/g;
444: if ($target eq 'web') {
445: my $args='';
446: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
447: if ($args eq '') {
448: &Apache::lonxml::get_all_text("/accessrule",$parser);
449: } else {
450: $currentstring = $token->[4];
451: }
452: }
453: if ($target eq 'meta') {
454: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
455: }
456: return $currentstring;
457: }
458:
459: sub end_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser) = @_;
461: my $currentstring = '';
462: if ($target eq 'web') {
463: my $args='';
464: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
465: if ($args ne '') {
466: $currentstring = $token->[4];
467: }
468: }
469: return $currentstring;
470: }
471:
472: #-- <body> tag (end tag required)
473: sub start_body {
474: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
475: my $currentstring = '';
476: if ($target eq 'web') {
477: if ($Apache::lonhomework::parsing_a_problem) {
478: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
479: return '';
480: }
481: if (!$Apache::lonxml::registered &&
482: $ENV{'request.state'} eq 'published') {
483: $currentstring.='<head>'.
484: &Apache::lonmenu::registerurl(undef,$target).'</head>';
485: }
486: # Accessibility
487: if ($ENV{'browser.imagesuppress'} eq 'on') {
488: delete($token->[2]->{'background'});
489: }
490: if ($ENV{'browser.fontenhance'} eq 'on') {
491: my $style='';
492: foreach my $key (keys(%{$token->[2]})) {
493: if ($key =~ /^style$/i) {
494: $style.=$token->[2]->{$key}.';';
495: delete($token->[2]->{$key});
496: }
497: }
498: $token->[2]->{'style'}=$style.'; font-size: x-large;';
499: }
500: if ($ENV{'browser.blackwhite'} eq 'on') {
501: delete($token->[2]->{'font'});
502: delete($token->[2]->{'link'});
503: delete($token->[2]->{'alink'});
504: delete($token->[2]->{'vlink'});
505: delete($token->[2]->{'bgcolor'});
506: delete($token->[2]->{'background'});
507: }
508: # Overload loads
509: my $onLoad='';
510: foreach my $key (keys(%{$token->[2]})) {
511: if ($key =~ /^onload$/i) {
512: $onLoad.=$token->[2]->{$key}.';';
513: delete($token->[2]->{$key});
514: }
515: }
516: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
517: my $onUnload='';
518: foreach my $key (keys(%{$token->[2]})) {
519: if ($key =~ /^onunload$/i) {
520: $onUnload.=$token->[2]->{$key}.';';
521: delete($token->[2]->{$key});
522: }
523: }
524: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
525: ';'.$onUnload;
526:
527: $currentstring .= '<'.$token->[1];
528: foreach (keys %{$token->[2]}) {
529: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
530: }
531: $currentstring.='>';
532: if ($ENV{'request.state'} ne 'published') {
533: $currentstring.=(<<EDITBUTTON);
534: <form method="post">
535: <input type="submit" name="editmode" accesskey="e" value="Edit" />
536: </form>
537: EDITBUTTON
538: } else {
539: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
540: }
541: $currentstring.=&Apache::lonxml::message_location();
542: } elsif ($target eq 'tex') {
543: $currentstring = '\begin{document}';
544: }
545: return $currentstring;
546: }
547:
548: sub end_body {
549: my ($target,$token) = @_;
550: my $currentstring = '';
551: if ($target eq 'web') {
552: $currentstring = $token->[2];
553: } elsif ($target eq 'tex') {
554: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
555: }
556: return $currentstring;
557: }
558:
559: #-- <center> tag (end tag required)
560: sub start_center {
561: my ($target,$token) = @_;
562: my $currentstring = '';
563: if ($target eq 'web') {
564: $currentstring = $token->[4];
565: } elsif ($target eq 'tex') {
566: $currentstring = '\begin{center}';
567: }
568: return $currentstring;
569: }
570:
571: sub end_center {
572: my ($target,$token) = @_;
573: my $currentstring = '';
574: if ($target eq 'web') {
575: $currentstring = $token->[2];
576: } elsif ($target eq 'tex') {
577: $currentstring = '\end{center}';
578: }
579: return $currentstring;
580: }
581:
582: #-- <b> tag (end tag required)
583: sub start_b {
584: my ($target,$token) = @_;
585: my $currentstring = '';
586: if ($target eq 'web') {
587: $currentstring = $token->[4];
588: } elsif ($target eq 'tex') {
589: $currentstring = '\textbf{';
590: }
591: return $currentstring;
592: }
593:
594: sub end_b {
595: my ($target,$token) = @_;
596: my $currentstring = '';
597: if ($target eq 'web') {
598: $currentstring = $token->[2];
599: } elsif ($target eq 'tex') {
600: $currentstring = '}';
601: }
602: return $currentstring;
603: }
604:
605: #-- <strong> tag (end tag required)
606: sub start_strong {
607: my ($target,$token) = @_;
608: my $currentstring = '';
609: if ($target eq 'web') {
610: $currentstring = $token->[4];
611: } elsif ($target eq 'tex') {
612: $currentstring = '\textbf{';
613: }
614: return $currentstring;
615: }
616:
617: sub end_strong {
618: my ($target,$token) = @_;
619: my $currentstring = '';
620: if ($target eq 'web') {
621: $currentstring = $token->[2];
622: } elsif ($target eq 'tex') {
623: $currentstring = '}';
624: }
625: return $currentstring;
626: }
627:
628: #-- <h1> tag (end tag required)
629: sub start_h1 {
630: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
631: my $currentstring = '';
632: if ($target eq 'web') {
633: $currentstring .= $token->[4];
634: } elsif ($target eq 'tex') {
635: my $pre;
636: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
637: if (($align eq 'center') || (not defined $align)) {
638: $pre='\begin{center}';
639: } elsif ($align eq 'left') {
640: $pre='\rlap{';
641: } elsif ($align eq 'right') {
642: $pre=' \hfill \llap{';
643: }
644: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
645: if (not defined $TeXsize) {$TeXsize="large";}
646: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
647: } elsif ($target eq 'meta') {
648: $currentstring='<subject>';
649: &start_output($target);
650: }
651: return $currentstring;
652: }
653:
654: sub end_h1 {
655: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
656: my $currentstring = '';
657: if ($target eq 'web') {
658: $currentstring .= $token->[2];
659: } elsif ($target eq 'tex') {
660: my $post;
661: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
662: if (($align eq 'center') || (not defined $align)) {
663: $post='\end{center}';
664: } elsif ($align eq 'left') {
665: $post='} \hfill'.'\vskip 0 mm ';
666: } elsif ($align eq 'right') {
667: $post='}'.'\vskip 0 mm ';
668: }
669: $currentstring .= '}}'.$post;
670: } elsif ($target eq 'meta') {
671: &end_output($target);
672: $currentstring='</subject>';
673: }
674: return $currentstring;
675: }
676:
677: #-- <h2> tag
678: sub start_h2 {
679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
680: my $currentstring = '';
681: if ($target eq 'web') {
682: $currentstring .= $token->[4];
683: } elsif ($target eq 'tex') {
684: my $pre;
685: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
686: if (($align eq 'center') || (not defined $align)) {
687: $pre='\begin{center}';
688: } elsif ($align eq 'left') {
689: $pre='\rlap{';
690: } elsif ($align eq 'right') {
691: $pre=' \hfill \llap{';
692: }
693: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
694: if (not defined $TeXsize) {$TeXsize="large";}
695: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
696: }
697: return $currentstring;
698: }
699:
700: sub end_h2 {
701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
702: my $currentstring = '';
703: if ($target eq 'web') {
704: $currentstring .= $token->[2];
705: } elsif ($target eq 'tex') {
706: my $post;
707: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
708: if (($align eq 'center') || (not defined $align)) {
709: $post='\end{center}';
710: } elsif ($align eq 'left') {
711: $post='} \hfill'.'\vskip 0 mm ';
712: } elsif ($align eq 'right') {
713: $post='}'.'\vskip 0 mm ';
714: }
715: $currentstring .= '}}'.$post;
716: }
717: return $currentstring;
718: }
719:
720: #-- <h3> tag
721: sub start_h3 {
722: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
723: my $currentstring = '';
724: if ($target eq 'web') {
725: $currentstring .= $token->[4];
726: } elsif ($target eq 'tex') {
727: my $pre;
728: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
729: if (($align eq 'center') || (not defined $align)) {
730: $pre='\begin{center}';
731: } elsif ($align eq 'left') {
732: $pre='\rlap{';
733: } elsif ($align eq 'right') {
734: $pre=' \hfill \llap{';
735: }
736: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
737: if (not defined $TeXsize) {$TeXsize="large";}
738: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
739: }
740: return $currentstring;
741: }
742:
743: sub end_h3 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = '';
746: if ($target eq 'web') {
747: $currentstring .= $token->[2];
748: } elsif ($target eq 'tex') {
749: my $post;
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if (($align eq 'center') || (not defined $align)) {
752: $post='\end{center}';
753: } elsif ($align eq 'left') {
754: $post='} \hfill'.'\vskip 0 mm ';
755: } elsif ($align eq 'right') {
756: $post='}'.'\vskip 0 mm ';
757: }
758: $currentstring .= '}}'.$post;
759: }
760: return $currentstring;
761: }
762:
763: #-- <h4> tag
764: sub start_h4 {
765: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
766: my $currentstring = '';
767: if ($target eq 'web') {
768: $currentstring .= $token->[4];
769: } elsif ($target eq 'tex') {
770: my $pre;
771: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
772: if (($align eq 'center') || (not defined $align)) {
773: $pre='\begin{center}';
774: } elsif ($align eq 'left') {
775: $pre='\rlap{';
776: } elsif ($align eq 'right') {
777: $pre=' \hfill \llap{';
778: }
779: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
780: if (not defined $TeXsize) {$TeXsize="large";}
781: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
782: }
783: return $currentstring;
784: }
785:
786: sub end_h4 {
787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
788: my $currentstring = '';
789: if ($target eq 'web') {
790: $currentstring .= $token->[2];
791: } elsif ($target eq 'tex') {
792: my $post;
793: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
794: if (($align eq 'center') || (not defined $align)) {
795: $post='\end{center}';
796: } elsif ($align eq 'left') {
797: $post='} \hfill'.'\vskip 0 mm ';
798: } elsif ($align eq 'right') {
799: $post='}'.'\vskip 0 mm ';
800: }
801: $currentstring .= '}}'.$post;
802: }
803: return $currentstring;
804: }
805:
806: #-- <h5> tag
807: sub start_h5 {
808: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
809: my $currentstring = '';
810: if ($target eq 'web') {
811: $currentstring .= $token->[4];
812: } elsif ($target eq 'tex') {
813: my $pre;
814: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
815: if (($align eq 'center') || (not defined $align)) {
816: $pre='\begin{center}';
817: } elsif ($align eq 'left') {
818: $pre='\rlap{';
819: } elsif ($align eq 'right') {
820: $pre=' \hfill \llap{';
821: }
822: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
823: if (not defined $TeXsize) {$TeXsize="large";}
824: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
825: }
826: return $currentstring;
827: }
828:
829: sub end_h5 {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
831: my $currentstring = '';
832: if ($target eq 'web') {
833: $currentstring .= $token->[2];
834: } elsif ($target eq 'tex') {
835: my $post;
836: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
837: if (($align eq 'center') || (not defined $align)) {
838: $post='\end{center}';
839: } elsif ($align eq 'left') {
840: $post='} \hfill'.'\vskip 0 mm ';
841: } elsif ($align eq 'right') {
842: $post='}'.'\vskip 0 mm ';
843: }
844: $currentstring .= '}}'.$post;
845: }
846: return $currentstring;
847: }
848:
849: #-- <h6> tag
850: sub start_h6 {
851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
852: my $currentstring = '';
853: if ($target eq 'web') {
854: $currentstring .= $token->[4];
855: } elsif ($target eq 'tex') {
856: my $pre;
857: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
858: if (($align eq 'center') || (not defined $align)) {
859: $pre='\begin{center}';
860: } elsif ($align eq 'left') {
861: $pre='\rlap{';
862: } elsif ($align eq 'right') {
863: $pre=' \hfill \llap{';
864: }
865: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
866: if (not defined $TeXsize) {$TeXsize="large";}
867: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
868: }
869: return $currentstring;
870: }
871:
872: sub end_h6 {
873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
874: my $currentstring = '';
875: if ($target eq 'web') {
876: $currentstring .= $token->[2];
877: } elsif ($target eq 'tex') {
878: my $post;
879: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
880: if (($align eq 'center') || (not defined $align)) {
881: $post='\end{center}';
882: } elsif ($align eq 'left') {
883: $post='} \hfill'.'\vskip 0 mm ';
884: } elsif ($align eq 'right') {
885: $post='}'.'\vskip 0 mm ';
886: }
887: $currentstring .= '}}'.$post;
888: }
889: return $currentstring;
890: }
891:
892: #--- <cite> tag (end tag required)
893: sub start_cite {
894: my ($target,$token) = @_;
895: my $currentstring = '';
896: if ($target eq 'web') {
897: $currentstring .= $token->[4];
898: } elsif ($target eq 'tex') {
899: $currentstring .= '\textit{';
900: }
901: return $currentstring;
902: }
903:
904: sub end_cite {
905: my ($target,$token) = @_;
906: my $currentstring = '';
907: if ($target eq 'web') {
908: $currentstring .= $token->[2];
909: } elsif ($target eq 'tex') {
910: $currentstring .= '}';
911: }
912: return $currentstring;
913: }
914:
915: #-- <i> tag (end tag required)
916: sub start_i {
917: my ($target,$token) = @_;
918: my $currentstring = '';
919: if ($target eq 'web') {
920: $currentstring .= $token->[4];
921: } elsif ($target eq 'tex') {
922: $currentstring .= '\textit{';
923: }
924: return $currentstring;
925: }
926:
927: sub end_i {
928: my ($target,$token) = @_;
929: my $currentstring = '';
930: if ($target eq 'web') {
931: $currentstring .= $token->[2];
932: } elsif ($target eq 'tex') {
933: $currentstring .= '}';
934: }
935: return $currentstring;
936: }
937:
938: #-- <address> tag (end tag required)
939: sub start_address {
940: my ($target,$token) = @_;
941: my $currentstring = '';
942: if ($target eq 'web') {
943: $currentstring .= $token->[4];
944: } elsif ($target eq 'tex') {
945: $currentstring .= '\textit{';
946: }
947: return $currentstring;
948: }
949:
950: sub end_address {
951: my ($target,$token) = @_;
952: my $currentstring = '';
953: if ($target eq 'web') {
954: $currentstring .= $token->[2];
955: } elsif ($target eq 'tex') {
956: $currentstring .= '}';
957: }
958: return $currentstring;
959: }
960:
961: #-- <dfn> tag (end tag required)
962: sub start_dfn {
963: my ($target,$token) = @_;
964: my $currentstring = '';
965: if ($target eq 'web') {
966: $currentstring .= $token->[4];
967: } elsif ($target eq 'tex') {
968: $currentstring .= '\textit{';
969: }
970: return $currentstring;
971: }
972:
973: sub end_dfn {
974: my ($target,$token) = @_;
975: my $currentstring = '';
976: if ($target eq 'web') {
977: $currentstring .= $token->[2];
978: } elsif ($target eq 'tex') {
979: $currentstring .= '}';
980: }
981: return $currentstring;
982: }
983:
984: #-- <tt> tag (end tag required)
985: sub start_tt {
986: my ($target,$token) = @_;
987: my $currentstring = '';
988: if ($target eq 'web') {
989: $currentstring .= $token->[4];
990: } elsif ($target eq 'tex') {
991: $currentstring .= '\texttt{';
992: }
993: return $currentstring;
994: }
995:
996: sub end_tt {
997: my ($target,$token) = @_;
998: my $currentstring = '';
999: if ($target eq 'web') {
1000: $currentstring .= $token->[2];
1001: } elsif ($target eq 'tex') {
1002: $currentstring .= '}';
1003: }
1004: return $currentstring;
1005: }
1006:
1007: #-- <kbd> tag (end tag required)
1008: sub start_kbd {
1009: my ($target,$token) = @_;
1010: my $currentstring = '';
1011: if ($target eq 'web') {
1012: $currentstring .= $token->[4];
1013: } elsif ($target eq 'tex') {
1014: $currentstring .= '\texttt{';
1015: }
1016: return $currentstring;
1017: }
1018:
1019: sub end_kbd {
1020: my ($target,$token) = @_;
1021: my $currentstring = '';
1022: if ($target eq 'web') {
1023: $currentstring .= $token->[2];
1024: } elsif ($target eq 'tex') {
1025: $currentstring .= '}';
1026: }
1027: return $currentstring;
1028: }
1029:
1030: #-- <code> tag (end tag required)
1031: sub start_code {
1032: my ($target,$token) = @_;
1033: my $currentstring = '';
1034: if ($target eq 'web') {
1035: $currentstring .= $token->[4];
1036: } elsif ($target eq 'tex') {
1037: $currentstring .= '\texttt{';
1038: }
1039: return $currentstring;
1040: }
1041:
1042: sub end_code {
1043: my ($target,$token) = @_;
1044: my $currentstring = '';
1045: if ($target eq 'web') {
1046: $currentstring .= $token->[2];
1047: } elsif ($target eq 'tex') {
1048: $currentstring .= '}';
1049: }
1050: return $currentstring;
1051: }
1052:
1053: #-- <em> tag (end tag required)
1054: sub start_em {
1055: my ($target,$token) = @_;
1056: my $currentstring = '';
1057: if ($target eq 'web') {
1058: $currentstring .= $token->[4];
1059: } elsif ($target eq 'tex') {
1060: $currentstring .= '\emph{';
1061: }
1062: return $currentstring;
1063: }
1064:
1065: sub end_em {
1066: my ($target,$token) = @_;
1067: my $currentstring = '';
1068: if ($target eq 'web') {
1069: $currentstring .= $token->[2];
1070: } elsif ($target eq 'tex') {
1071: $currentstring .= '}';
1072: }
1073: return $currentstring;
1074: }
1075:
1076: #-- <q> tag (end tag required)
1077: sub start_q {
1078: my ($target,$token) = @_;
1079: my $currentstring = '';
1080: if ($target eq 'web') {
1081: $currentstring .= $token->[4];
1082: } elsif ($target eq 'tex') {
1083: $currentstring .= '\emph{';
1084: }
1085: return $currentstring;
1086: }
1087:
1088: sub end_q {
1089: my ($target,$token) = @_;
1090: my $currentstring = '';
1091: if ($target eq 'web') {
1092: $currentstring .= $token->[2];
1093: } elsif ($target eq 'tex') {
1094: $currentstring .= '}';
1095: }
1096: return $currentstring;
1097: }
1098:
1099: #-- <p> tag (end tag optional)
1100: #optional attribute - align="center|left|right"
1101: sub start_p {
1102: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1103: my $currentstring = '';
1104: if ($target eq 'web') {
1105: $currentstring .= $token->[4];
1106: } elsif ($target eq 'tex') {
1107: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1108: if ($align eq 'center') {
1109: $currentstring='\begin{center}\par';
1110: } elsif ($align eq 'right') {
1111: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1112: } elsif ($align eq 'left') {
1113: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1114: }
1115: my $signal=1;#<p> does not work inside <b>...</b>
1116: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1117: if (!$signal) {$currentstring = '';}
1118: }
1119: }
1120: return $currentstring;
1121: }
1122:
1123: sub end_p {
1124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1125: my $currentstring = '';
1126: if ($target eq 'web') {
1127: $currentstring .= $token->[2];
1128: } elsif ($target eq 'tex') {
1129: if ($$tagstack[-1] eq 'p') {
1130: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1131: if ($align eq 'center') {
1132: $currentstring .= '\end{center}';
1133: } elsif ($align eq 'right') {
1134: $currentstring .= '}}';
1135: } elsif ($align eq 'left') {
1136: $currentstring .= '}\hfill}';
1137: }
1138: }
1139: }
1140: return $currentstring;
1141: }
1142:
1143: #-- <br> tag (end tag forbidden)
1144: sub start_br {
1145: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1146: my $currentstring = '';
1147: if ($target eq 'web') {
1148: $currentstring .= $token->[4];
1149: } elsif ($target eq 'tex') {
1150: if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1151: $currentstring .= '\vskip 0.2 mm ';
1152: }
1153: }
1154: return $currentstring;
1155: }
1156:
1157: sub end_br {
1158: my ($target,$token) = @_;
1159: my $currentstring = '';
1160: if ($target eq 'web') {
1161: $currentstring .= $token->[2];
1162: }
1163: return $currentstring;
1164: }
1165:
1166: #-- <big> tag (end tag required)
1167: sub start_big {
1168: my ($target,$token) = @_;
1169: my $currentstring = '';
1170: if ($target eq 'web') {
1171: $currentstring .= $token->[4];
1172: } elsif ($target eq 'tex') {
1173: $currentstring .= '{\large ';
1174: }
1175: return $currentstring;
1176: }
1177:
1178: sub end_big {
1179: my ($target,$token) = @_;
1180: my $currentstring = '';
1181: if ($target eq 'web') {
1182: $currentstring .= $token->[2];
1183: } elsif ($target eq 'tex') {
1184: $currentstring .= '}';
1185: }
1186: return $currentstring;
1187: }
1188:
1189: #-- <small> tag (end tag required)
1190: sub start_small {
1191: my ($target,$token) = @_;
1192: my $currentstring = '';
1193: if ($target eq 'web') {
1194: $currentstring .= $token->[4];
1195: } elsif ($target eq 'tex') {
1196: $currentstring .= '{\footnotesize ';
1197: }
1198: return $currentstring;
1199: }
1200:
1201: sub end_small {
1202: my ($target,$token) = @_;
1203: my $currentstring = '';
1204: if ($target eq 'web') {
1205: $currentstring .= $token->[2];
1206: } elsif ($target eq 'tex') {
1207: $currentstring .= '}';
1208: }
1209: return $currentstring;
1210: }
1211:
1212: #-- <basefont> tag (end tag forbidden)
1213: sub start_basefont {
1214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1215: my $currentstring = '';
1216: if ($target eq 'web') {
1217: $currentstring = $token->[4];
1218: } elsif ($target eq 'tex') {
1219: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1220: if (defined $basesize) {
1221: $currentstring = '{\\'.$basesize.' ';
1222: }
1223: }
1224: return $currentstring;
1225: }
1226:
1227: sub end_basefont {
1228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1229: my $currentstring = '';
1230: if ($target eq 'web') {
1231: $currentstring = $token->[4];
1232: } elsif ($target eq 'tex') {
1233: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1234: if (defined $basesize) {
1235: $currentstring = '}';
1236: }
1237: }
1238: return $currentstring;
1239: }
1240:
1241: #-- <font> tag (end tag required)
1242: sub start_font {
1243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1244: my $currentstring = '';
1245: if ($target eq 'web') {
1246: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1247: if ($face!~/symbol/i) {
1248: if (($ENV{'browser.fontenhance'} eq 'on') ||
1249: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1250: }
1251: $currentstring = $token->[4];
1252: } elsif ($target eq 'tex') {
1253: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1254: if (defined $fontsize) {
1255: $currentstring = '{\\'.$fontsize.' ';
1256: }
1257: }
1258: return $currentstring;
1259: }
1260:
1261: sub end_font {
1262: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1263: my $currentstring = '';
1264: if ($target eq 'web') {
1265: $currentstring = $token->[2];
1266: } elsif ($target eq 'tex') {
1267: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1268: if (defined $fontsize) {
1269: $currentstring = '}';
1270: }
1271: }
1272: return $currentstring;
1273: }
1274:
1275: #-- <strike> tag (end tag required)
1276: sub start_strike {
1277: my ($target,$token) = @_;
1278: my $currentstring = '';
1279: if ($target eq 'web') {
1280: $currentstring .= $token->[4];
1281: } elsif ($target eq 'tex') {
1282: &Apache::lonxml::startredirection();
1283: }
1284: return $currentstring;
1285: }
1286:
1287: sub end_strike {
1288: my ($target,$token) = @_;
1289: my $currentstring = '';
1290: if ($target eq 'web') {
1291: $currentstring .= $token->[2];
1292: } elsif ($target eq 'tex') {
1293: $currentstring=&Apache::lonxml::endredirection();
1294: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1295: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1296: $currentstring=~s/(\S)\s*$/$1\}/;
1297: }
1298: return $currentstring;
1299: }
1300:
1301: #-- <s> tag (end tag required)
1302: sub start_s {
1303: my ($target,$token) = @_;
1304: my $currentstring = '';
1305: if ($target eq 'web') {
1306: $currentstring .= $token->[4];
1307: } elsif ($target eq 'tex') {
1308: &Apache::lonxml::startredirection();
1309: }
1310: return $currentstring;
1311: }
1312:
1313: sub end_s {
1314: my ($target,$token) = @_;
1315: my $currentstring = '';
1316: if ($target eq 'web') {
1317: $currentstring .= $token->[2];
1318: } elsif ($target eq 'tex') {
1319: $currentstring=&Apache::lonxml::endredirection();
1320: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1321: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1322: $currentstring=~s/(\S)\s*$/$1\}/;
1323: }
1324: return $currentstring;
1325: }
1326:
1327: #-- <sub> tag (end tag required)
1328: sub start_sub {
1329: my ($target,$token) = @_;
1330: my $currentstring = '';
1331: if ($target eq 'web') {
1332: $currentstring .= $token->[4];
1333: } elsif ($target eq 'tex') {
1334: $currentstring .= '\ensuremath{_{';
1335: }
1336: return $currentstring;
1337: }
1338:
1339: sub end_sub {
1340: my ($target,$token) = @_;
1341: my $currentstring = '';
1342: if ($target eq 'web') {
1343: $currentstring .= $token->[2];
1344: } elsif ($target eq 'tex') {
1345: $currentstring .= '}}';
1346: }
1347: return $currentstring;
1348: }
1349:
1350: #-- <sup> tag (end tag required)
1351: sub start_sup {
1352: my ($target,$token) = @_;
1353: my $currentstring = '';
1354: if ($target eq 'web') {
1355: $currentstring .= $token->[4];
1356: } elsif ($target eq 'tex') {
1357: $currentstring .= '\ensuremath{^{';
1358: }
1359: return $currentstring;
1360: }
1361:
1362: sub end_sup {
1363: my ($target,$token) = @_;
1364: my $currentstring = '';
1365: if ($target eq 'web') {
1366: $currentstring .= $token->[2];
1367: } elsif ($target eq 'tex') {
1368: $currentstring .= '}}';
1369: }
1370: return $currentstring;
1371: }
1372:
1373: #-- <hr> tag (end tag forbidden)
1374: sub start_hr {
1375: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1376: my $currentstring = '';
1377: if ($target eq 'web') {
1378: $currentstring .= $token->[4];
1379: } elsif ($target eq 'tex') {
1380: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1381: if (defined $LaTeXwidth) {
1382: if ($LaTeXwidth=~/^%/) {
1383: substr($LaTeXwidth,0,1)='';
1384: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1385: }
1386: } else {
1387: $LaTeXwidth ='0.9\textwidth';
1388: }
1389: my ($pre,$post);
1390: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1391: if (($align eq 'center') || (not defined $align)) {
1392: $pre=''; $post='';
1393: } elsif ($align eq 'left') {
1394: $pre='\rlap{'; $post='} \hfill';
1395: } elsif ($align eq 'right') {
1396: $pre=' \hfill \llap{'; $post='}';
1397: }
1398: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1399: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1400: }
1401: return $currentstring;
1402: }
1403:
1404: sub end_hr {
1405: my ($target,$token) = @_;
1406: my $currentstring = '';
1407: if ($target eq 'web') {
1408: $currentstring .= $token->[2];
1409: }
1410: return $currentstring;
1411: }
1412:
1413: #-- <div> tag (end tag required)
1414: sub start_div {
1415: my ($target,$token) = @_;
1416: my $currentstring = '';
1417: if ($target eq 'web') {
1418: $currentstring .= $token->[4];
1419: }
1420: return $currentstring;
1421: }
1422:
1423: sub end_div {
1424: my ($target,$token) = @_;
1425: my $currentstring = '';
1426: if ($target eq 'web') {
1427: $currentstring .= $token->[2];
1428: }
1429: return $currentstring;
1430: }
1431:
1432: #-- <a> tag (end tag required)
1433: sub start_a {
1434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web') {
1437: $currentstring .= $token->[4];
1438: } elsif ($target eq 'tex') {
1439: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1440: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1441: if ($a=~/\S/) {
1442: $a=~s/([^\\])%/$1\\\%/g;
1443: $currentstring .= '\ref{URI: '.$a.'}';
1444: } elsif ($b=~/\S/) {
1445: $currentstring .= '\ref{Anchor: '.$b.'}';
1446: } else {
1447: $currentstring.='';
1448: }
1449: }
1450: return $currentstring;
1451: }
1452:
1453: sub end_a {
1454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1455: my $currentstring = '';
1456: if ($target eq 'web') {
1457: $currentstring .= $token->[2];
1458: }
1459: return $currentstring;
1460: }
1461:
1462: #-- <li> tag (end tag optional)
1463: sub start_li {
1464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1465: my $currentstring = '';
1466: if ($target eq 'web') {
1467: $currentstring = $token->[4];
1468: } elsif ($target eq 'tex') {
1469: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
1470: if ($type=~/circle/) {
1471: $currentstring .= ' \item[o] ';
1472: } elsif ($type=~/square/) {
1473: $currentstring .= ' \item[$\Box$] ';
1474: } elsif ($type ne '') {
1475: $currentstring .= ' \item['.$type.'] ';
1476: } else {
1477: $currentstring .= ' \item ';
1478: }
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_li {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web') {
1487: $currentstring = $token->[2];
1488: }
1489: return $currentstring;
1490: }
1491:
1492: #-- <u> tag (end tag required)
1493: sub start_u {
1494: my ($target,$token) = @_;
1495: my $currentstring = '';
1496: if ($target eq 'web') {
1497: $currentstring .= $token->[4];
1498: } elsif ($target eq 'tex') {
1499: &Apache::lonxml::startredirection();
1500: }
1501: return $currentstring;
1502: }
1503:
1504: sub end_u {
1505: my ($target,$token) = @_;
1506: my $currentstring = '';
1507: if ($target eq 'web') {
1508: $currentstring .= $token->[2];
1509: } elsif ($target eq 'tex') {
1510: $currentstring=&Apache::lonxml::endredirection();
1511: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1512: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1513: $currentstring=~s/(\S)\s*$/$1\}/;
1514: }
1515: return $currentstring;
1516: }
1517:
1518: #-- <ul> tag (end tag required)
1519: sub start_ul {
1520: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1521: my $currentstring = '';
1522: if ($target eq 'web') {
1523: $currentstring = $token->[4];
1524: } elsif ($target eq 'tex') {
1525: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1526: if ($TeXtype eq 'disc') {
1527: $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
1528: \renewcommand{\labelitemii}{$\bullet$}
1529: \renewcommand{\labelitemiii}{$\bullet$}
1530: \renewcommand{\labelitemiv}{$\bullet$}';
1531: } elsif ($TeXtype eq 'circle') {
1532: $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
1533: \renewcommand{\labelitemii}{$\circ$}
1534: \renewcommand{\labelitemiii}{$\circ$}
1535: \renewcommand{\labelitemiv}{$\circ$}';
1536: } elsif ($TeXtype eq 'square') {
1537: $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
1538: \renewcommand{\labelitemii}{$\diamond$}
1539: \renewcommand{\labelitemiii}{$\diamond$}
1540: \renewcommand{\labelitemiv}{$\diamond$}';
1541: }
1542: $currentstring .= '\begin{itemize}';
1543: }
1544: return $currentstring;
1545: }
1546:
1547: sub end_ul {
1548: my ($target,$token) = @_;
1549: my $currentstring = '';
1550: if ($target eq 'web') {
1551: $currentstring = $token->[2];
1552: } elsif ($target eq 'tex') {
1553: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
1554: \renewcommand{\labelitemii}{$\bullet$}
1555: \renewcommand{\labelitemiii}{$\bullet$}
1556: \renewcommand{\labelitemiv}{$\bullet$}';
1557: }
1558: return $currentstring;
1559: }
1560:
1561: #-- <menu> tag (end tag required)
1562: sub start_menu {
1563: my ($target,$token) = @_;
1564: my $currentstring = '';
1565: if ($target eq 'web') {
1566: $currentstring = $token->[4];
1567: } elsif ($target eq 'tex') {
1568: $currentstring = " \\begin{itemize} ";
1569: }
1570: return $currentstring;
1571: }
1572:
1573: sub end_menu {
1574: my ($target,$token) = @_;
1575: my $currentstring = '';
1576: if ($target eq 'web') {
1577: $currentstring = $token->[2];
1578: } elsif ($target eq 'tex') {
1579: $currentstring = " \\end{itemize}";
1580: }
1581: return $currentstring;
1582: }
1583:
1584: #-- <dir> tag (end tag required)
1585: sub start_dir {
1586: my ($target,$token) = @_;
1587: my $currentstring = '';
1588: if ($target eq 'web') {
1589: $currentstring = $token->[4];
1590: } elsif ($target eq 'tex') {
1591: $currentstring = " \\begin{itemize} ";
1592: }
1593: return $currentstring;
1594: }
1595:
1596: sub end_dir {
1597: my ($target,$token) = @_;
1598: my $currentstring = '';
1599: if ($target eq 'web') {
1600: $currentstring = $token->[2];
1601: } elsif ($target eq 'tex') {
1602: $currentstring = " \\end{itemize}";
1603: }
1604: return $currentstring;
1605: }
1606:
1607: #-- <ol> tag (end tag required)
1608: sub start_ol {
1609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1610: my $currentstring = '';
1611: if ($target eq 'web') {
1612: $currentstring = $token->[4];
1613: } elsif ($target eq 'tex') {
1614: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1615: if ($type eq '1') {
1616: $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
1617: \renewcommand{\labelenumii}{\arabic{enumii}.}
1618: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1619: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1620: } elsif ($type eq 'A') {
1621: $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
1622: \renewcommand{\labelenumii}{\Alph{enumii}.}
1623: \renewcommand{\labelenumiii}{\Alph{enumiii}.}
1624: \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1625: } elsif ($type eq 'a') {
1626: $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
1627: \renewcommand{\labelenumii}{\alph{enumii}.}
1628: \renewcommand{\labelenumiii}{\alph{enumiii}.}
1629: \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
1630: } elsif ($type eq 'i') {
1631: $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
1632: \renewcommand{\labelenumii}{\roman{enumii}.}
1633: \renewcommand{\labelenumiii}{\roman{enumiii}.}
1634: \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
1635: } elsif ($type eq 'I') {
1636: $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
1637: \renewcommand{\labelenumii}{\Roman{enumii}.}
1638: \renewcommand{\labelenumiii}{\Roman{enumiii}.}
1639: \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
1640: }
1641: $currentstring .= '\begin{enumerate}';
1642: }
1643: return $currentstring;
1644: }
1645:
1646: sub end_ol {
1647: my ($target,$token) = @_;
1648: my $currentstring = '';
1649: if ($target eq 'web') {
1650: $currentstring = $token->[2];
1651: } elsif ($target eq 'tex') {
1652: $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
1653: \renewcommand{\labelenumii}{\arabic{enumii}.}
1654: \renewcommand{\labelenumiii}{\arabic{enumiii}.}
1655: \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1656: }
1657: return $currentstring;
1658: }
1659:
1660: #-- <dl> tag (end tag required)
1661: sub start_dl {
1662: my ($target,$token) = @_;
1663: my $currentstring = '';
1664: if ($target eq 'web') {
1665: $currentstring = $token->[4];
1666: } elsif ($target eq 'tex') {
1667: $currentstring = '\begin{description}';
1668: @Apache::londefdef::description=();
1669: $Apache::londefdef::DD_redirection=0;
1670: $Apache::londefdef::DT_redirection=0;
1671: }
1672: return $currentstring;
1673: }
1674:
1675: sub end_dl {
1676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1677: my $currentstring = '';
1678: if ($target eq 'web') {
1679: $currentstring = $token->[2];
1680: } elsif ($target eq 'tex') {
1681: if ($Apache::londefdef::DT_redirection) {
1682: my $data=&item_cleanup;
1683: push @Apache::londefdef::description,'\item['.$data.']';
1684: $Apache::londefdef::DT_redirection=0;
1685: } elsif ($Apache::londefdef::DD_redirection) {
1686: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1687: }
1688: foreach my $element (@Apache::londefdef::description) {
1689: $currentstring.=' '.$element.' ';
1690: }
1691: @Apache::londefdef::description=();
1692: $currentstring.='\end{description}';
1693: }
1694: return $currentstring;
1695: }
1696:
1697: #-- <dt> tag (end tag optional)
1698: sub start_dt {
1699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1700: my $currentstring='';
1701: if ($target eq 'web') {
1702: $currentstring = $token->[4];
1703: } elsif ($target eq 'tex') {
1704: if ($Apache::londefdef::DT_redirection) {
1705: my $data=&item_cleanup;
1706: push @Apache::londefdef::description,'\item['.$data.']';
1707: $Apache::londefdef::DT_redirection=0;
1708: } elsif ($Apache::londefdef::DD_redirection) {
1709: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1710: $Apache::londefdef::DD_redirection=0;
1711: }
1712: &Apache::lonxml::startredirection();
1713: $Apache::londefdef::DT_redirection=1;
1714: }
1715: return $currentstring;
1716: }
1717:
1718: sub end_dt {
1719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1720: my $currentstring = '';
1721: if ($target eq 'web') {
1722: $currentstring = $token->[2];
1723: } elsif ($target eq 'tex') {
1724: my $data=&item_cleanup;
1725: push @Apache::londefdef::description,'\item['.$data.']';
1726: $Apache::londefdef::DT_redirection=0;
1727: }
1728: return $currentstring;
1729: }
1730:
1731: sub item_cleanup {
1732: my $item=&Apache::lonxml::endredirection();
1733: $item=~s/\\begin{center}//g;
1734: $item=~s/\\end{center}//g;
1735: return $item;
1736: }
1737:
1738: #-- <dd> tag (end tag optional)
1739: sub start_dd {
1740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1741: my $currentstring = '';
1742: if ($target eq 'web') {
1743: $currentstring = $token->[4];
1744: } elsif ($target eq 'tex') {
1745: if ($Apache::londefdef::DT_redirection) {
1746: my $data=&item_cleanup;
1747: push @Apache::londefdef::description,'\item['.$data.']';
1748: $Apache::londefdef::DT_redirection=0;
1749: }
1750: $Apache::londefdef::DD_redirection=1;
1751: &Apache::lonxml::startredirection();
1752: }
1753: return $currentstring;
1754: }
1755:
1756: sub end_dd {
1757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1758: my $currentstring = '';
1759: if ($target eq 'web') {
1760: $currentstring = $token->[2];
1761: } elsif ($target eq 'tex') {
1762: $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
1763: $Apache::londefdef::DD_redirection=0;
1764: }
1765: return $currentstring;
1766: }
1767:
1768: #-- <table> tag (end tag required)
1769: sub start_table {
1770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1771: my $textwidth='';
1772: if (not defined @Apache::londefdef::table) {
1773: $textwidth=&recalc($ENV{'form.textwidth'});
1774: $textwidth=~/(\d+\.?\d*)/;
1775: $textwidth=0.95*$1;
1776: } else {
1777: $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1778: }
1779: my $currentstring = '';
1780: if ($target eq 'web') {
1781: $currentstring = $token->[4];
1782: } elsif ($target eq 'tex') {
1783: my $aa = {};
1784: push @Apache::londefdef::table, $aa;
1785: $Apache::londefdef::table[-1]{'row_number'} = -1;
1786: #table's width
1787: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1788: if (not defined $TeXwidth) {
1789: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1790: if ($htmlwidth=~/%/) {
1791: $Apache::londefdef::table[-1]{'percent'}=1;
1792: $htmlwidth=~/(\d+)/;
1793: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1794: } else {
1795: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1796: }
1797: } elsif ($TeXwidth=~/%/) {
1798: $Apache::londefdef::table[-1]{'percent'}=1;
1799: $TeXwidth=~/(\d+)/;
1800: my $value=$1*$textwidth/100;
1801: $Apache::londefdef::table[-1]{'width'}=$value;
1802: } else {
1803: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1804: }
1805: #table's border
1806: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);
1807: unless (defined $border) { $border = 0; }
1808: if ($border) {
1809: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1810: $Apache::londefdef::table[-1]{'vinc'} = '&';
1811: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1812: } else {
1813: $Apache::londefdef::table[-1]{'hinc'} = '';
1814: $Apache::londefdef::table[-1]{'vinc'} = '&';
1815: $Apache::londefdef::table[-1]{'vvinc'} = '';
1816: }
1817: $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
1818: $currentstring = '\keephidden{NEW TABLE ENTRY}';
1819: }
1820: return $currentstring;
1821: }
1822:
1823: sub end_table {
1824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1825: my $currentstring = '';
1826: if ($target eq 'web') {
1827: $currentstring = $token->[2];
1828: } elsif ($target eq 'tex') {
1829: my $inmemory = '';
1830: my $output = '';
1831: #construct header of the table
1832: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
1833: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
1834: $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
1835: }
1836: $header_of_table .= '}';
1837: #define the length of the table cells
1838: #always starts with TeXwidth (if defined everything else is ignored)
1839: my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
1840: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1841: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
1842: for (my $jn=0;$jn<=$#length_row;$jn++) {
1843: if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
1844: }
1845: }
1846: #continues trying estimate the width of raw data
1847: my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
1848: for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1849: my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
1850: for (my $jn=0;$jn<=$#length_row;$jn++) {
1851: if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
1852: }
1853: }
1854: #comparing of TeXwidth and raw data width
1855: my $available_length=$Apache::londefdef::table[-1]{'width'};
1856: my $needed=0;
1857: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1858: if ($length_row_final[$jn]!=0) {
1859: $available_length=$available_length-$length_row_final[$jn];
1860: $needed++;
1861: }
1862: }
1863: $needed=$#length_row_final-$needed+1;
1864: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1865: if ($length_row_final[$jn]==0) {
1866: if ($length_raw_row[$jn]<$available_length) {
1867: $length_row_final[$jn]=$length_raw_row[$jn];
1868: $available_length=$available_length-$length_raw_row[$jn];
1869: $needed--;
1870: }
1871: }
1872: }
1873: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1874: if ($length_row_final[$jn]==0) {
1875: $length_row_final[$jn]=0.9*$available_length/$needed;
1876: }
1877: }
1878: #recalculation for the use of all available width if width is defined in %
1879: if ($Apache::londefdef::table[-1]{'percent'}==1) {
1880: my $current=0;
1881: for (my $i=0;$i<=$#length_row_final;$i++) {
1882: $current+=$length_row_final[$i];
1883: }
1884: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
1885: for (my $i=0;$i<=$#length_row_final;$i++) {
1886: $length_row_final[$i]*=$coef;
1887: }
1888: }
1889: #fill the table
1890: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1891: for (my $jn=0;$jn<=$#length_row_final;$jn++) {
1892: my $substituted=$length_row_final[$jn];
1893: $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
1894: }
1895: $output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
1896: chop $output;
1897: $output .= ' \\\\ ';
1898: }
1899: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
1900: if ($#Apache::londefdef::table > 0) {
1901: my $inmemory = $Apache::londefdef::table[-1]{'output'};
1902: pop @Apache::londefdef::table;
1903: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
1904: } else {
1905: $currentstring .= $Apache::londefdef::table[-1]{'output'};
1906: pop @Apache::londefdef::table;
1907: undef @Apache::londefdef::table;
1908: }
1909: }
1910: return $currentstring;
1911: }
1912:
1913: #-- <tr> tag (end tag optional)
1914: sub start_tr {
1915: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1916: my $currentstring = '';
1917: if ($target eq 'web') {
1918: $currentstring = $token->[4];
1919: } elsif ($target eq 'tex') {
1920: $Apache::londefdef::table[-1]{'row_number'}++;
1921: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1922: if ($alignchar ne '') {
1923: push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
1924: } else {
1925: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
1926: }
1927: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
1928: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
1929: $Apache::londefdef::table[-1]{'TeXlength'} = '';
1930: $Apache::londefdef::table[-1]{'length'} = '';
1931: }
1932: return $currentstring;
1933: }
1934:
1935: sub end_tr {
1936: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1937: my $currentstring = '';
1938: if ($target eq 'web') {
1939: $currentstring = $token->[2];
1940: } elsif ($target eq 'tex') {
1941: if ($Apache::londefdef::TD_redirection) {
1942: &end_td_tex($parstack,$parser,$safeeval);
1943: }
1944: push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
1945: push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
1946: }
1947: return $currentstring;
1948: }
1949:
1950: #-- <td> tag (end tag optional)
1951: sub start_td {
1952: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1953: my $currentstring = '';
1954: if ($target eq 'web') {
1955: $currentstring = $token->[4];
1956: } elsif ($target eq 'tex') {
1957: $Apache::londefdef::TD_redirection = 1;
1958: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
1959: }
1960: return $currentstring;
1961: }
1962:
1963: sub tag_check {
1964: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
1965: my @ar=@$parstack;
1966: for (my $i=$#ar-1;$i>=0;$i--) {
1967: if (lc($$tagstack[$i]) eq $good_tag) {
1968: &start_td_tex($parstack,$parser,$safeeval);
1969: last;
1970: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
1971: splice @ar, $i+1;
1972: &end_td_tex(\@ar,$parser,$safeeval);
1973: &start_td_tex($parstack,$parser,$safeeval);
1974: last;
1975: }
1976: }
1977: return '';
1978: }
1979:
1980: sub start_td_tex {
1981: my ($parstack,$parser,$safeeval) = @_;
1982: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
1983: if ($what_to_push eq '') {
1984: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
1985: }
1986: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
1987: $Apache::londefdef::table[-1]{'counter_columns'}++;
1988: &Apache::lonxml::startredirection();
1989: return '';
1990: }
1991:
1992: sub end_td_tex {
1993: my ($parstack,$parser,$safeeval) = @_;
1994: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
1995: my $data=&Apache::lonxml::endredirection();
1996: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1997: if (defined $TeXwidth) {
1998: my $current_length=&recalc($TeXwidth);
1999: $current_length=~/(\d+)/;
2000: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2001: $Apache::londefdef::table[-1]{'length'} .= '0,';
2002: } else {
2003: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2004: my $current_length=&recalc($1);
2005: $current_length=~/(\d+\.?\d*)/;
2006: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2007: $Apache::londefdef::table[-1]{'length'} .= '0,';
2008: } else {
2009: $data=~s/^\s+(\S.*)/$1/;
2010: $data=~s/(.*\S)\s+$/$1/;
2011: $data=~s/(\s)+/$1/;
2012: my $current_length=0;
2013: if ($data=~/\\vskip/) {
2014: my $newdata=$data;
2015: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2016: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2017: foreach my $elementdata (@newdata) {
2018: my $lengthnewdata=1.8*LATEX_length($elementdata);
2019: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2020: }
2021: } else {
2022: $current_length=1.8*LATEX_length($data);
2023: }
2024: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2025: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2026: }
2027: }
2028: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2029: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2030: }
2031: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2032: return'';
2033: }
2034:
2035: sub end_td {
2036: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2037: my $currentstring = '';
2038: if ($target eq 'web') {
2039: $currentstring = $token->[2];
2040: } elsif ($target eq 'tex') {
2041: $Apache::londefdef::TD_redirection =0;
2042: &end_td_tex($parstack,$parser,$safeeval);
2043: }
2044: return $currentstring;
2045: }
2046:
2047: #-- <th> tag (end tag optional)
2048: sub start_th {
2049: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2050: my $currentstring = '';
2051: if ($target eq 'web') {
2052: $currentstring = $token->[4];
2053: } elsif ($target eq 'tex') {
2054: my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2055: if ($what_to_push eq '') {
2056: $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
2057: }
2058: push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
2059: $Apache::londefdef::table[-1]{'counter_columns'}++;
2060: &Apache::lonxml::startredirection();
2061: }
2062: return $currentstring;
2063: }
2064:
2065: sub end_th {
2066: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2067: my $currentstring = '';
2068: if ($target eq 'web') {
2069: $currentstring = $token->[2];
2070: } elsif ($target eq 'tex') {
2071: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2072: my $data=&Apache::lonxml::endredirection();
2073: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2074: if (defined $TeXwidth) {
2075: my $current_length=&recalc($TeXwidth);
2076: $current_length=~/(\d+)/;
2077: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2078: $Apache::londefdef::table[-1]{'length'} .= '0,';
2079: } else {
2080: if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2081: my $current_length=&recalc($1);
2082: $current_length=~/(\d+)/;
2083: $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
2084: $Apache::londefdef::table[-1]{'length'} .= '0,';
2085: } else {
2086: $data=~/^\s*(\S.*)/;
2087: $data=$1;
2088: $data=~/(.*\S)\s*$/;
2089: $data=$1;
2090: my $current_length=2*length($data);
2091: $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
2092: $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
2093: }
2094: }
2095: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2096: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2097: }
2098: $data='\textbf{'.$data.'}';
2099: @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
2100: }
2101: return $currentstring;
2102: }
2103: #-- <img> tag (end tag forbidden)
2104: sub start_img {
2105: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2106: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2107: undef,1);
2108: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2109: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2110: &Apache::lonnet::logthis("inside was $inside");
2111: return '';
2112: }
2113: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2114: my $currentstring = '';
2115: my $scaling = .3;
2116: if ($target eq 'web') {
2117: if ($ENV{'browser.imagesuppress'} ne 'on') {
2118: $currentstring.= $token->[4];
2119: } else {
2120: my $alttag= &Apache::lonxml::get_param
2121: ('alt',$parstack,$safeeval,undef,1);
2122: unless ($alttag) {
2123: $alttag=&Apache::lonmeta::alttag
2124: ($Apache::lonxml::pwd[-1],$src);
2125: }
2126: $currentstring.='[IMAGE: '.$alttag.']';
2127: }
2128: } elsif ($target eq 'tex') {
2129: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2130: #if original gif/jpg/png file exist do following:
2131: if (-e $src) {
2132: #what is the image size?
2133: my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
2134: my ($file,$path)=&file_path($src);
2135: my $newsrc = $src;
2136: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2137: $file=~s/\.(gif|jpg|png)$/.eps/i;
2138: #where can we find the picture?
2139: if (-e $newsrc) {
2140: #eps counterpart for image exist
2141: if ($path) {
2142: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2143: }
2144: } else {
2145: #there is no eps counterpart for image - check for ps one
2146: $newsrc =~ s/\.eps$/\.ps/;
2147: if (-e $newsrc) {
2148: #ps counterpart for image exist
2149: $file =~ s/\.eps$/\.ps/;
2150: if ($path) {
2151: $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2152: }
2153: } else {
2154: #care about eps dynamical generation
2155: $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
2156: }
2157: }
2158: } else {
2159: #original image file doesn't exist so check the alt attribute
2160: my $alt =
2161: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2162: unless ($alt) {
2163: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2164: }
2165:
2166: if ($alt) {
2167: $currentstring .= ' '.$alt.' ';
2168: } else {
2169: #<allow> tag will care about replication
2170: }
2171: }
2172: } elsif ($target eq 'edit') {
2173: $currentstring .=&Apache::edit::tag_start($target,$token);
2174: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2175: &Apache::edit::browse('src',undef,'alt').' '.
2176: &Apache::edit::search('src',undef,'alt').'<br />';
2177: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2178: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2179: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2180: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2181: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2182: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2183: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
2184: my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
2185: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
2186: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
2187: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2188: if ($width) { $currentstring.=' width="'.$width.'" '; }
2189: if ($height) { $currentstring.=' height="'.$height.'" '; }
2190: $currentstring .= ' />';
2191: } elsif ($target eq 'modified') {
2192: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2193: $safeeval,'src','alt',
2194: 'TeXwidth','TeXheight',
2195: 'width','height');
2196: $src=$token->[2]{'src'};
2197: if (!$token->[2]{'width'} && !$token->[2]{'height'}) {
2198: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2199: &image_replication($src);
2200: if (-e $src) {
2201: my $image = Image::Magick->new;
2202: my ($width, $height, $size, $format) = $image->Ping($src);
2203: if ($width && $height) {
2204: $token->[2]{'width'} =$width;
2205: $token->[2]{'height'}=$height;
2206: $constructtag=1;
2207: }
2208: }
2209: }
2210: if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2211: }
2212: return $currentstring;
2213: }
2214:
2215: sub end_img {
2216: my ($target,$token) = @_;
2217: my $currentstring = '';
2218: if ($target eq 'web') {
2219: $currentstring = $token->[2];
2220: } elsif ($target eq 'tex') {
2221: $currentstring = '';
2222: }
2223: return $currentstring;
2224: }
2225:
2226: #-- <applet> tag (end tag required)
2227: sub start_applet {
2228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2229:
2230: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2231: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2232:
2233: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2234: undef,1);
2235: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2236:
2237: my $currentstring = '';
2238: if ($target eq 'web') {
2239: if ($ENV{'browser.appletsuppress'} ne 'on') {
2240: $currentstring = $token->[4];
2241: } else {
2242: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2243: $safeeval,undef,1);
2244: unless ($alttag) {
2245: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2246: $code);
2247: }
2248: $currentstring='[APPLET: '.$alttag.']';
2249: }
2250: } elsif ($target eq 'tex') {
2251: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2252: $safeeval,undef,1);
2253: unless ($alttag) {
2254: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2255: undef,1);
2256: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2257: $code);
2258: }
2259: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2260: '.}\end{center}';
2261: }
2262: return $currentstring;
2263: }
2264:
2265: sub end_applet {
2266: my ($target,$token) = @_;
2267: my $currentstring = '';
2268: if ($target eq 'web') {
2269: $currentstring = $token->[2];
2270: } elsif ($target eq 'tex') {
2271: }
2272: return $currentstring;
2273: }
2274:
2275: #-- <embed> tag (end tag optional/required)
2276: sub start_embed {
2277: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2278: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2279: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2280: my $currentstring = '';
2281: if ($target eq 'web') {
2282: if ($ENV{'browser.embedsuppress'} ne 'on') {
2283: $currentstring = $token->[4];
2284: } else {
2285: my $alttag=&Apache::lonxml::get_param
2286: ('alt',$parstack,$safeeval,undef,1);
2287: unless ($alttag) {
2288: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2289: }
2290: $currentstring='[EMBED: '.$alttag.']';
2291: }
2292: } elsif ($target eq 'tex') {
2293: }
2294: return $currentstring;
2295: }
2296:
2297: sub end_embed {
2298: my ($target,$token) = @_;
2299: my $currentstring = '';
2300: if ($target eq 'web') {
2301: $currentstring = $token->[2];
2302: } elsif ($target eq 'tex') {
2303: }
2304: return $currentstring;
2305: }
2306:
2307: #-- <param> tag (end tag forbidden)
2308: sub start_param {
2309: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2310: if (&Apache::lonxml::get_param
2311: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2312: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2313: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2314: }
2315: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2316: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2317: my $currentstring = '';
2318: if ($target eq 'web') {
2319: $currentstring = $token->[4];
2320: } elsif ($target eq 'tex') {
2321: }
2322: return $currentstring;
2323: }
2324:
2325: sub end_param {
2326: my ($target,$token) = @_;
2327: my $currentstring = '';
2328: if ($target eq 'web') {
2329: $currentstring = $token->[2];
2330: } elsif ($target eq 'tex') {
2331: }
2332: return $currentstring;
2333: }
2334:
2335: #-- <allow> tag
2336: sub start_allow {
2337: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2338: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2339: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2340: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2341: &Apache::lonnet::clutter($src);
2342: &image_replication($src);
2343: my $result;
2344: if ($target eq 'edit') {
2345: $result .=&Apache::edit::tag_start($target,$token);
2346: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2347: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2348: } elsif ($target eq 'modified') {
2349: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2350: $safeeval,'src');
2351: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2352: }
2353: return $result;
2354: }
2355:
2356: sub end_allow {
2357: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2358: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2359: return '';
2360: }
2361:
2362: #-- Frames (end tag required)
2363: #-- <frameset>
2364: sub start_frameset {
2365: my ($target,$token) = @_;
2366: my $currentstring = '';
2367: if ($target eq 'web') {
2368: if (!$Apache::lonxml::registered &&
2369: $ENV{'request.state'} eq 'published') {
2370: $currentstring.='<head>'.
2371: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2372: }
2373: my $onLoad='';
2374: foreach my $key (keys(%{$token->[2]})) {
2375: if ($key =~ /^onload$/i) {
2376: $onLoad.=$token->[2]->{$key}.';';
2377: delete($token->[2]->{$key});
2378: }
2379: }
2380: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2381: my $onUnload='';
2382: foreach my $key (keys(%{$token->[2]})) {
2383: if ($key =~ /^onunload$/i) {
2384: $onUnload.=$token->[2]->{$key}.';';
2385: delete($token->[2]->{$key});
2386: }
2387: }
2388: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2389: ';'.$onUnload;
2390:
2391: $currentstring .= '<'.$token->[1];
2392: foreach (keys %{$token->[2]}) {
2393: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2394: }
2395: $currentstring.='>';
2396: }
2397: return $currentstring;
2398: }
2399:
2400: sub end_frameset {
2401: my ($target,$token) = @_;
2402: my $currentstring = '';
2403: if ($target eq 'web') {
2404: $currentstring = $token->[2];
2405: }
2406: return $currentstring;
2407: }
2408:
2409: #-- <xmp> (end tag required)
2410: sub start_xmp {
2411: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2412: my $currentstring = '';
2413: if ($target eq 'web') {
2414: $currentstring .= $token->[4];
2415: } elsif ($target eq 'tex') {
2416: $currentstring .= '\begin{verbatim}';
2417: }
2418: return $currentstring;
2419: }
2420:
2421: sub end_xmp {
2422: my ($target,$token) = @_;
2423: my $currentstring = '';
2424: if ($target eq 'web') {
2425: $currentstring .= $token->[2];
2426: } elsif ($target eq 'tex') {
2427: $currentstring .= '\end{verbatim}';
2428: }
2429: return $currentstring;
2430: }
2431:
2432: #-- <pre> (end tag required)
2433: sub start_pre {
2434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2435: my $currentstring = '';
2436: if ($target eq 'web') {
2437: $currentstring .= $token->[4];
2438: } elsif ($target eq 'tex') {
2439: $currentstring .= '\begin{verbatim}';
2440: }
2441: return $currentstring;
2442: }
2443:
2444: sub end_pre {
2445: my ($target,$token) = @_;
2446: my $currentstring = '';
2447: if ($target eq 'web') {
2448: $currentstring .= $token->[2];
2449: } elsif ($target eq 'tex') {
2450: $currentstring .= '\end{verbatim}';
2451: }
2452: return $currentstring;
2453: }
2454:
2455: #-- <insert>
2456: sub start_insert {
2457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2458: my $currentstring = '';
2459: if ($target eq 'web') {
2460: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2461: $currentstring .= '<b>'.$display.'</b>';;
2462: }
2463: return $currentstring;
2464: }
2465:
2466: sub end_insert {
2467: my ($target,$token) = @_;
2468: my $currentstring = '';
2469: if ($target eq 'web') {
2470: $currentstring .= '';
2471: }
2472: return $currentstring;
2473: }
2474:
2475: #-- <externallink>
2476: sub start_externallink {
2477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2478: my $currentstring = '';
2479: if ($target eq 'web') {
2480: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2481: $currentstring .= '<b>'.$display.'</b>';;
2482: }
2483: return $currentstring;
2484: }
2485:
2486: sub end_externallink {
2487: my ($target,$token) = @_;
2488: my $currentstring = '';
2489: if ($target eq 'web') {
2490: $currentstring .= '';
2491: }
2492: return $currentstring;
2493: }
2494:
2495: #-- <blankspace heigth="">
2496: sub start_blankspace {
2497: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2498: my $currentstring = '';
2499: if ($target eq 'tex') {
2500: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2501: $currentstring .= '\vskip '.$howmuch.' ';
2502: }
2503: return $currentstring;
2504: }
2505:
2506: sub end_blankspace {
2507: my ($target,$token) = @_;
2508: my $currentstring = '';
2509: if ($target eq 'tex') {
2510: $currentstring .= '';
2511: }
2512: return $currentstring;
2513: }
2514:
2515: #-- <abbr> tag (end tag required)
2516: sub start_abbr {
2517: my ($target,$token) = @_;
2518: my $currentstring = '';
2519: if ($target eq 'web') {
2520: $currentstring = $token->[4];
2521: }
2522: return $currentstring;
2523: }
2524:
2525: sub end_abbr {
2526: my ($target,$token) = @_;
2527: my $currentstring = '';
2528: if ($target eq 'web') {
2529: $currentstring = $token->[2];
2530: }
2531: return $currentstring;
2532: }
2533:
2534: #-- <acronym> tag (end tag required)
2535: sub start_acronym {
2536: my ($target,$token) = @_;
2537: my $currentstring = '';
2538: if ($target eq 'web') {
2539: $currentstring = $token->[4];
2540: }
2541: return $currentstring;
2542: }
2543:
2544: sub end_acronym {
2545: my ($target,$token) = @_;
2546: my $currentstring = '';
2547: if ($target eq 'web') {
2548: $currentstring = $token->[2];
2549: }
2550: return $currentstring;
2551: }
2552:
2553: #-- <area> tag (end tag forbidden)
2554: sub start_area {
2555: my ($target,$token) = @_;
2556: my $currentstring = '';
2557: if ($target eq 'web') {
2558: $currentstring = $token->[4];
2559: }
2560: return $currentstring;
2561: }
2562:
2563: sub end_area {
2564: my ($target,$token) = @_;
2565: my $currentstring = '';
2566: if ($target eq 'web') {
2567: $currentstring = $token->[2];
2568: }
2569: return $currentstring;
2570: }
2571:
2572: #-- <base> tag (end tag forbidden)
2573: sub start_base {
2574: my ($target,$token) = @_;
2575: my $currentstring = '';
2576: if ($target eq 'web') {
2577: $currentstring = $token->[4];
2578: }
2579: return $currentstring;
2580: }
2581:
2582: sub end_base {
2583: my ($target,$token) = @_;
2584: my $currentstring = '';
2585: if ($target eq 'web') {
2586: $currentstring = $token->[2];
2587: }
2588: return $currentstring;
2589: }
2590:
2591: #-- <bdo> tag (end tag required)
2592: sub start_bdo {
2593: my ($target,$token) = @_;
2594: my $currentstring = '';
2595: if ($target eq 'web') {
2596: $currentstring = $token->[4];
2597: }
2598: return $currentstring;
2599: }
2600:
2601: sub end_bdo {
2602: my ($target,$token) = @_;
2603: my $currentstring = '';
2604: if ($target eq 'web') {
2605: $currentstring = $token->[2];
2606: }
2607: return $currentstring;
2608: }
2609:
2610: #-- <bgsound> tag (end tag optional)
2611: sub start_bgsound {
2612: my ($target,$token) = @_;
2613: my $currentstring = '';
2614: if ($target eq 'web') {
2615: $currentstring = $token->[4];
2616: }
2617: return $currentstring;
2618: }
2619:
2620: sub end_bgsound {
2621: my ($target,$token) = @_;
2622: my $currentstring = '';
2623: if ($target eq 'web') {
2624: $currentstring = $token->[2];
2625: }
2626: return $currentstring;
2627: }
2628:
2629: #-- <blink> tag (end tag required)
2630: sub start_blink {
2631: my ($target,$token) = @_;
2632: my $currentstring = '';
2633: if ($target eq 'web') {
2634: $currentstring = $token->[4];
2635: }
2636: return $currentstring;
2637: }
2638:
2639: sub end_blink {
2640: my ($target,$token) = @_;
2641: my $currentstring = '';
2642: if ($target eq 'web') {
2643: $currentstring = $token->[2];
2644: }
2645: return $currentstring;
2646: }
2647:
2648: #-- <blockquote> tag (end tag required)
2649: sub start_blockquote {
2650: my ($target,$token) = @_;
2651: my $currentstring = '';
2652: if ($target eq 'web') {
2653: $currentstring = $token->[4];
2654: }
2655: return $currentstring;
2656: }
2657:
2658: sub end_blockquote {
2659: my ($target,$token) = @_;
2660: my $currentstring = '';
2661: if ($target eq 'web') {
2662: $currentstring = $token->[2];
2663: }
2664: return $currentstring;
2665: }
2666:
2667: #-- <button> tag (end tag required)
2668: sub start_button {
2669: my ($target,$token) = @_;
2670: my $currentstring = '';
2671: if ($target eq 'web') {
2672: $currentstring = $token->[4];
2673: }
2674: return $currentstring;
2675: }
2676:
2677: sub end_button {
2678: my ($target,$token) = @_;
2679: my $currentstring = '';
2680: if ($target eq 'web') {
2681: $currentstring = $token->[2];
2682: }
2683: return $currentstring;
2684: }
2685:
2686: #-- <caption> tag (end tag required)
2687: sub start_caption {
2688: my ($target,$token) = @_;
2689: my $currentstring = '';
2690: if ($target eq 'web') {
2691: $currentstring = $token->[4];
2692: }
2693: return $currentstring;
2694: }
2695:
2696: sub end_caption {
2697: my ($target,$token) = @_;
2698: my $currentstring = '';
2699: if ($target eq 'web') {
2700: $currentstring = $token->[2];
2701: }
2702: return $currentstring;
2703: }
2704:
2705: #-- <col> tag (end tag forbdden)
2706: sub start_col {
2707: my ($target,$token) = @_;
2708: my $currentstring = '';
2709: if ($target eq 'web') {
2710: $currentstring = $token->[4];
2711: }
2712: return $currentstring;
2713: }
2714:
2715: sub end_col {
2716: my ($target,$token) = @_;
2717: my $currentstring = '';
2718: if ($target eq 'web') {
2719: $currentstring = $token->[2];
2720: }
2721: return $currentstring;
2722: }
2723:
2724: #-- <colgroup> tag (end tag optional)
2725: sub start_colgroup {
2726: my ($target,$token) = @_;
2727: my $currentstring = '';
2728: if ($target eq 'web') {
2729: $currentstring = $token->[4];
2730: }
2731: return $currentstring;
2732: }
2733:
2734: sub end_colgroup {
2735: my ($target,$token) = @_;
2736: my $currentstring = '';
2737: if ($target eq 'web') {
2738: $currentstring = $token->[2];
2739: }
2740: return $currentstring;
2741: }
2742:
2743: #-- <del> tag (end tag required)
2744: sub start_del {
2745: my ($target,$token) = @_;
2746: my $currentstring = '';
2747: if ($target eq 'web') {
2748: $currentstring = $token->[4];
2749: }
2750: return $currentstring;
2751: }
2752:
2753: sub end_del {
2754: my ($target,$token) = @_;
2755: my $currentstring = '';
2756: if ($target eq 'web') {
2757: $currentstring = $token->[2];
2758: }
2759: return $currentstring;
2760: }
2761:
2762: #-- <fieldset> tag (end tag required)
2763: sub start_fieldset {
2764: my ($target,$token) = @_;
2765: my $currentstring = '';
2766: if ($target eq 'web') {
2767: $currentstring = $token->[4];
2768: }
2769: return $currentstring;
2770: }
2771:
2772: sub end_fieldset {
2773: my ($target,$token) = @_;
2774: my $currentstring = '';
2775: if ($target eq 'web') {
2776: $currentstring = $token->[2];
2777: }
2778: return $currentstring;
2779: }
2780:
2781: #-- <frame> tag (end tag forbidden)
2782: sub start_frame {
2783: my ($target,$token) = @_;
2784: my $currentstring = '';
2785: if ($target eq 'web') {
2786: $currentstring = $token->[4];
2787: }
2788: return $currentstring;
2789: }
2790:
2791: sub end_frame {
2792: my ($target,$token) = @_;
2793: my $currentstring = '';
2794: if ($target eq 'web') {
2795: $currentstring = $token->[2];
2796: }
2797: return $currentstring;
2798: }
2799:
2800: #-- <iframe> tag (end tag required)
2801: sub start_iframe {
2802: my ($target,$token) = @_;
2803: my $currentstring = '';
2804: if ($target eq 'web') {
2805: $currentstring = $token->[4];
2806: }
2807: return $currentstring;
2808: }
2809:
2810: sub end_iframe {
2811: my ($target,$token) = @_;
2812: my $currentstring = '';
2813: if ($target eq 'web') {
2814: $currentstring = $token->[2];
2815: }
2816: return $currentstring;
2817: }
2818:
2819: #-- <ins> tag (end tag required)
2820: sub start_ins {
2821: my ($target,$token) = @_;
2822: my $currentstring = '';
2823: if ($target eq 'web') {
2824: $currentstring = $token->[4];
2825: }
2826: return $currentstring;
2827: }
2828:
2829: sub end_ins {
2830: my ($target,$token) = @_;
2831: my $currentstring = '';
2832: if ($target eq 'web') {
2833: $currentstring = $token->[2];
2834: }
2835: return $currentstring;
2836: }
2837:
2838: #-- <isindex> tag (end tag forbidden)
2839: sub start_isindex {
2840: my ($target,$token) = @_;
2841: my $currentstring = '';
2842: if ($target eq 'web') {
2843: $currentstring = $token->[4];
2844: }
2845: return $currentstring;
2846: }
2847:
2848: sub end_isindex {
2849: my ($target,$token) = @_;
2850: my $currentstring = '';
2851: if ($target eq 'web') {
2852: $currentstring = $token->[2];
2853: }
2854: return $currentstring;
2855: }
2856:
2857: #-- <keygen> tag (end tag forbidden)
2858: sub start_keygen {
2859: my ($target,$token) = @_;
2860: my $currentstring = '';
2861: if ($target eq 'web') {
2862: $currentstring = $token->[4];
2863: }
2864: return $currentstring;
2865: }
2866:
2867: sub end_keygen {
2868: my ($target,$token) = @_;
2869: my $currentstring = '';
2870: if ($target eq 'web') {
2871: $currentstring = $token->[2];
2872: }
2873: return $currentstring;
2874: }
2875:
2876: #-- <label> tag
2877: sub start_label {
2878: my ($target,$token) = @_;
2879: my $currentstring = '';
2880: if ($target eq 'web') {
2881: $currentstring = $token->[4];
2882: }
2883: return $currentstring;
2884: }
2885:
2886: sub end_label {
2887: my ($target,$token) = @_;
2888: my $currentstring = '';
2889: if ($target eq 'web') {
2890: $currentstring = $token->[2];
2891: }
2892: return $currentstring;
2893: }
2894:
2895: #-- <layer> tag (end tag required)
2896: sub start_layer {
2897: my ($target,$token) = @_;
2898: my $currentstring = '';
2899: if ($target eq 'web') {
2900: $currentstring = $token->[4];
2901: }
2902: return $currentstring;
2903: }
2904:
2905: sub end_layer {
2906: my ($target,$token) = @_;
2907: my $currentstring = '';
2908: if ($target eq 'web') {
2909: $currentstring = $token->[2];
2910: }
2911: return $currentstring;
2912: }
2913:
2914: #-- <legend> tag (end tag required)
2915: sub start_legend {
2916: my ($target,$token) = @_;
2917: my $currentstring = '';
2918: if ($target eq 'web') {
2919: $currentstring = $token->[4];
2920: }
2921: return $currentstring;
2922: }
2923:
2924: sub end_legend {
2925: my ($target,$token) = @_;
2926: my $currentstring = '';
2927: if ($target eq 'web') {
2928: $currentstring = $token->[2];
2929: }
2930: return $currentstring;
2931: }
2932:
2933: #-- <link> tag (end tag forbidden)
2934: sub start_link {
2935: my ($target,$token) = @_;
2936: my $currentstring = '';
2937: if ($target eq 'web') {
2938: $currentstring = $token->[4];
2939: }
2940: return $currentstring;
2941: }
2942:
2943: sub end_link {
2944: my ($target,$token) = @_;
2945: my $currentstring = '';
2946: if ($target eq 'web') {
2947: $currentstring = $token->[2];
2948: }
2949: return $currentstring;
2950: }
2951:
2952: #-- <marquee> tag (end tag optional)
2953: sub start_marquee {
2954: my ($target,$token) = @_;
2955: my $currentstring = '';
2956: if ($target eq 'web') {
2957: $currentstring = $token->[4];
2958: }
2959: return $currentstring;
2960: }
2961:
2962: sub end_marquee {
2963: my ($target,$token) = @_;
2964: my $currentstring = '';
2965: if ($target eq 'web') {
2966: $currentstring = $token->[2];
2967: }
2968: return $currentstring;
2969: }
2970:
2971: #-- <multicol> tag (end tag required)
2972: sub start_multicol {
2973: my ($target,$token) = @_;
2974: my $currentstring = '';
2975: if ($target eq 'web') {
2976: $currentstring = $token->[4];
2977: }
2978: return $currentstring;
2979: }
2980:
2981: sub end_multicol {
2982: my ($target,$token) = @_;
2983: my $currentstring = '';
2984: if ($target eq 'web') {
2985: $currentstring = $token->[2];
2986: }
2987: return $currentstring;
2988: }
2989:
2990: #-- <nobr> tag (end tag required)
2991: sub start_nobr {
2992: my ($target,$token) = @_;
2993: my $currentstring = '';
2994: if ($target eq 'web') {
2995: $currentstring = $token->[4];
2996: } elsif ($target eq 'tex') {
2997: $currentstring='\mbox{';
2998: }
2999: return $currentstring;
3000: }
3001:
3002: sub end_nobr {
3003: my ($target,$token) = @_;
3004: my $currentstring = '';
3005: if ($target eq 'web') {
3006: $currentstring = $token->[2];
3007: } elsif ($target eq 'tex') {
3008: $currentstring='}';
3009: }
3010: return $currentstring;
3011: }
3012:
3013: #-- <noembed> tag (end tag required)
3014: sub start_noembed {
3015: my ($target,$token) = @_;
3016: my $currentstring = '';
3017: if ($target eq 'web') {
3018: $currentstring = $token->[4];
3019: }
3020: return $currentstring;
3021: }
3022:
3023: sub end_noembed {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[2];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: #-- <noframes> tag (end tag required)
3033: sub start_noframes {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[4];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_noframes {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[2];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: #-- <nolayer> tag (end tag required)
3052: sub start_nolayer {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[4];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_nolayer {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <noscript> tag (end tag required)
3071: sub start_noscript {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[4];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: sub end_noscript {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[2];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: #-- <object> tag (end tag required)
3090: sub start_object {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[4];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_object {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[2];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: #-- <optgroup> tag (end tag required)
3109: sub start_optgroup {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[4];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: sub end_optgroup {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[2];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: #-- <samp> tag (end tag required)
3128: sub start_samp {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[4];
3133: } elsif ($target eq 'tex') {
3134: $currentstring='\texttt{';
3135: }
3136: return $currentstring;
3137: }
3138:
3139: sub end_samp {
3140: my ($target,$token) = @_;
3141: my $currentstring = '';
3142: if ($target eq 'web') {
3143: $currentstring = $token->[2];
3144: } elsif ($target eq 'tex') {
3145: $currentstring='}';
3146: }
3147: return $currentstring;
3148: }
3149:
3150: #-- <server> tag
3151: sub start_server {
3152: my ($target,$token) = @_;
3153: my $currentstring = '';
3154: if ($target eq 'web') {
3155: $currentstring = $token->[4];
3156: }
3157: return $currentstring;
3158: }
3159:
3160: sub end_server {
3161: my ($target,$token) = @_;
3162: my $currentstring = '';
3163: if ($target eq 'web') {
3164: $currentstring = $token->[2];
3165: }
3166: return $currentstring;
3167: }
3168:
3169: #-- <spacer> tag (end tag forbidden)
3170: sub start_spacer {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web') {
3174: $currentstring = $token->[4];
3175: }
3176: return $currentstring;
3177: }
3178:
3179: sub end_spacer {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web') {
3183: $currentstring = $token->[2];
3184: }
3185: return $currentstring;
3186: }
3187:
3188: #-- <span> tag (end tag required)
3189: sub start_span {
3190: my ($target,$token) = @_;
3191: my $currentstring = '';
3192: if ($target eq 'web') {
3193: $currentstring = $token->[4];
3194: }
3195: return $currentstring;
3196: }
3197:
3198: sub end_span {
3199: my ($target,$token) = @_;
3200: my $currentstring = '';
3201: if ($target eq 'web') {
3202: $currentstring = $token->[2];
3203: }
3204: return $currentstring;
3205: }
3206:
3207: #-- <tbody> tag (end tag optional)
3208: sub start_tbody {
3209: my ($target,$token) = @_;
3210: my $currentstring = '';
3211: if ($target eq 'web') {
3212: $currentstring = $token->[4];
3213: }
3214: return $currentstring;
3215: }
3216:
3217: sub end_tbody {
3218: my ($target,$token) = @_;
3219: my $currentstring = '';
3220: if ($target eq 'web') {
3221: $currentstring = $token->[2];
3222: }
3223: return $currentstring;
3224: }
3225:
3226: #-- <tfoot> tag (end tag optional)
3227: sub start_tfoot {
3228: my ($target,$token) = @_;
3229: my $currentstring = '';
3230: if ($target eq 'web') {
3231: $currentstring = $token->[4];
3232: }
3233: return $currentstring;
3234: }
3235:
3236: sub end_tfoot {
3237: my ($target,$token) = @_;
3238: my $currentstring = '';
3239: if ($target eq 'web') {
3240: $currentstring = $token->[2];
3241: }
3242: return $currentstring;
3243: }
3244:
3245: #-- <thead> tag (end tag optional)
3246: sub start_thead {
3247: my ($target,$token) = @_;
3248: my $currentstring = '';
3249: if ($target eq 'web') {
3250: $currentstring = $token->[4];
3251: }
3252: return $currentstring;
3253: }
3254:
3255: sub end_thead {
3256: my ($target,$token) = @_;
3257: my $currentstring = '';
3258: if ($target eq 'web') {
3259: $currentstring = $token->[2];
3260: }
3261: return $currentstring;
3262: }
3263:
3264: #-- <var> tag
3265: sub start_var {
3266: my ($target,$token) = @_;
3267: my $currentstring = '';
3268: if ($target eq 'web') {
3269: $currentstring = $token->[4];
3270: } elsif ($target eq 'tex') {
3271: $currentstring = '\textit{';
3272: }
3273: return $currentstring;
3274: }
3275:
3276: sub end_var {
3277: my ($target,$token) = @_;
3278: my $currentstring = '';
3279: if ($target eq 'web') {
3280: $currentstring = $token->[2];
3281: } elsif ($target eq 'tex') {
3282: $currentstring = '}';
3283: }
3284: return $currentstring;
3285: }
3286:
3287: #-- <wbr> tag (end tag forbidden)
3288: sub start_wbr {
3289: my ($target,$token) = @_;
3290: my $currentstring = '';
3291: if ($target eq 'web') {
3292: $currentstring = $token->[4];
3293: }
3294: return $currentstring;
3295: }
3296:
3297: sub end_wbr {
3298: my ($target,$token) = @_;
3299: my $currentstring = '';
3300: if ($target eq 'web') {
3301: $currentstring = $token->[2];
3302: }
3303: return $currentstring;
3304: }
3305:
3306: #-- <hideweboutput> tag
3307: sub start_hideweboutput {
3308: my ($target,$token) = @_;
3309: if ($target eq 'web') {
3310: &Apache::lonxml::startredirection();
3311: }
3312: return '';
3313: }
3314:
3315: sub end_hideweboutput {
3316: my ($target,$token) = @_;
3317: my $currentstring = '';
3318: if ($target eq 'web') {
3319: $currentstring = &Apache::lonxml::endredirection();
3320: }
3321: return '';
3322: }
3323:
3324:
3325: sub image_replication {
3326: my $src = shift;
3327: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3328: #replicates eps or ps
3329: my $epssrc = my $pssrc = $src;
3330: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3331: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3332: if (not -e $epssrc && not -e $pssrc) {
3333: my $result=&Apache::lonnet::repcopy($epssrc);
3334: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3335: }
3336: return '';
3337: }
3338:
3339: sub image_size {
3340: my ($src,$scaling,$parstack,$safeeval)=@_;
3341: #size of image from gif/jpg/jpeg/png
3342: my $image = Image::Magick->new;
3343: my $current_figure = $image->Read($src);
3344: my $width_param = $image->Get('width') * $scaling;;
3345: my $height_param = $image->Get('height') * $scaling;;
3346: undef $image;
3347: #do we have any specified LaTeX size of the picture?
3348: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3349: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3350: #do we have any specified web size of the picture?
3351: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3352: undef,1);
3353: if ($TeXwidth ne '') {
3354: if ($TeXwidth=~/(\d+)\s*\%/) {
3355: $width_param = $1*$ENV{'form.textwidth'}/100;
3356: } else {
3357: $width_param = $TeXwidth;
3358: }
3359: } elsif ($TeXheight ne '') {
3360: $width_param = $TeXheight/$height_param*$width_param;
3361: } elsif ($width ne '') {
3362: $width_param = $width*$scaling;
3363: }
3364: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3365: return $width_param;
3366: }
3367:
3368: sub eps_generation {
3369: my ($src,$file,$width_param) = @_;
3370: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3371: my $temp_file = Apache::File->new('>>'.$filename);
3372: print $temp_file "$src\n";
3373: my $newsrc = $src;
3374: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3375: $newsrc=~s/\/home\/httpd\/html\/res//;
3376: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3377: $newsrc=~s/\/\.\//\//;
3378: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3379: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3380: }
3381:
3382: sub file_path {
3383: my $src=shift;
3384: my ($file,$path);
3385: if ($src =~ m!(.*)/([^/]*)$!) {
3386: $file = $2;
3387: $path = $1.'/';
3388: }
3389: return $file,$path;
3390: }
3391:
3392: sub recalc {
3393: my $argument = shift;
3394: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3395: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3396: my $value=$1;
3397: my $units=$2;
3398: if ($units eq 'cm') {
3399: $value*=10;
3400: } elsif ($units eq 'in') {
3401: $value*=25.4;
3402: } elsif ($units eq 'pc') {
3403: $value*=(25.4*12/72.27);
3404: } elsif ($units eq 'pt') {
3405: $value*=(25.4/72.27);
3406: }
3407: return $value.' mm';
3408: }
3409:
3410: sub LATEX_length {
3411: my $garbage=shift;
3412: $garbage=~s/^\s+(\S.*)/$1/;
3413: $garbage=~s/(.*\S)\s+$/$1/;
3414: $garbage=~s/(\s)+/$1/;
3415: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;
3416: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;
3417: $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;
3418: $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;
3419: $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;
3420: $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;
3421: $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)/1/g;
3422: $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)/ /g;
3423: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3424: my $value=length($garbage);
3425: return $value;
3426: }
3427:
3428:
3429:
3430:
3431: 1;
3432: __END__
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