1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.280 2005/07/11 10:27:58 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50:
51:
52: BEGIN {
53:
54: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
55:
56: }
57:
58: sub initialize_londefdef {
59: $Apache::londefdef::TD_redirection=0;
60: @Apache::londefdef::table = ();
61: $Apache::londefdef::select=0;
62: undef(@Apache::londefdef::description);
63: @Apache::londefdef::DD=(0);
64: @Apache::londefdef::DT=(0);
65: @Apache::londefdef::seenDT=(0);
66: $Apache::londefdef::list_index=0;
67: }
68:
69: #======================= TAG SUBROUTINES =====================
70: #-- <output>
71: sub start_output {
72: my ($target) = @_;
73: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
74: return '';
75: }
76: sub end_output {
77: my ($target) = @_;
78: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
79: return '';
80: }
81: #-- <m> tag
82: sub start_m {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
84: my $currentstring = '';
85: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
86: if ($target eq 'web' || $target eq 'analyze') {
87: &Apache::lonxml::debug("M is starting with:$inside:");
88: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
89: if ($eval eq 'on') {
90: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
91: #&Apache::lonxml::debug("M is evaulated to:$inside:");
92: }
93: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
94: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
95: if ($Apache::lontexconvert::errorstring) {
96: &Apache::lonxml::warning("tth error: ".
97: $Apache::lontexconvert::errorstring);
98: $Apache::lontexconvert::errorstring='';
99: }
100: #&Apache::lonxml::debug("M is ends with:$currentstring:");
101: $Apache::lonxml::post_evaluate=0;
102: } elsif ($target eq 'tex') {
103: $currentstring = $inside;
104: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
105: if ($eval eq 'on') {
106: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
107: }
108: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
109: # detect simple math mode entry exits, and convert them
110: # to use \ensuremath
111: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
112: $currentstring=~s/^\$//;
113: $currentstring=~s/\$$//;
114: $currentstring='\ensuremath{'.$currentstring.'}';
115: }
116: $Apache::lonxml::post_evaluate=0;
117: }
118: return $currentstring;
119: }
120:
121: sub end_m {
122: my ($target,$token) = @_;
123: my $currentstring = '';
124: if ($target eq 'tex') {
125: $currentstring = "";
126: }
127: return $currentstring;
128: }
129:
130: sub start_tthoption {
131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
132: my $result;
133: if ($target eq 'web') {
134: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
135: $inside=~s/^\s*//;
136: if ($env{'browser.mathml'}) {
137: &tth::ttmoptions($inside);
138: } else {
139: &tth::tthoptions($inside);
140: }
141: }
142: return $result;
143: }
144:
145: sub end_tthoption {
146: my ($target,$token) = @_;
147: my $result;
148: return $result;
149: }
150:
151: #-- <html> tag (end tag optional)
152: sub start_html {
153: my ($target,$token) = @_;
154: my $currentstring = '';
155: my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
156: &Apache::lontexconvert::init_tth();
157: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
158: $currentstring = &Apache::lonxml::xmlbegin();
159: } elsif ($target eq 'tex') {
160: $currentstring .= '\documentclass[letterpaper]{article}';
161: if (($env{'form.latex_type'}=~'batchmode') ||
162: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
163: $currentstring .= '\newcommand{\keephidden}[1]{}'.
164: '\renewcommand{\deg}{$^{\circ}$}'.
165: '\usepackage{longtable}'.
166: '\usepackage{textcomp}'.
167: '\usepackage{makeidx}'.
168: '\usepackage[dvips]{graphicx}'.
169: '\usepackage{picins}'.
170: '\usepackage{epsfig}'.
171: '\usepackage{calc}'.
172: '\usepackage{amsmath}'.
173: '\usepackage{amssymb}'.
174: '\usepackage{amsfonts}'.
175: '\usepackage{amsthm}'.
176: '\usepackage{amscd}'.
177: '\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}}'.
178: '\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}}';
179: }
180: return $currentstring;
181: }
182:
183: sub end_html {
184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
185: my $currentstring = '';
186: if ($target eq 'web') {
187: $currentstring = '</html>';
188: }
189: return $currentstring;
190: }
191:
192: #-- <head> tag (end tag optional)
193: sub start_head {
194: my ($target,$token) = @_;
195: my $currentstring = '';
196: if ($target eq 'web') {
197: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
198: }
199: return $currentstring;
200: }
201:
202: sub end_head {
203: my ($target,$token) = @_;
204: my $currentstring = '';
205: if ($target eq 'web' && $env{'request.state'} eq 'published') {
206: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
207: $token->[2];
208: }
209: return $currentstring;
210: }
211:
212: #-- <map> tag (end tag required)
213: sub start_map {
214: my ($target,$token) = @_;
215: my $currentstring = '';
216: if ($target eq 'web') {
217: $currentstring = $token->[4];
218: }
219: return $currentstring;
220: }
221:
222: sub end_map {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web') {
226: $currentstring = $token->[2];
227: }
228: return $currentstring;
229: }
230:
231: #-- <select> tag (end tag required)
232: sub start_select {
233: my ($target,$token) = @_;
234: my $currentstring = '';
235: if ($target eq 'web') {
236: $currentstring = $token->[4];
237: } elsif ($target eq 'tex') {
238: $Apache::londefdef::select=0;
239: }
240: return $currentstring;
241: }
242:
243: sub end_select {
244: my ($target,$token) = @_;
245: my $currentstring = '';
246: if ($target eq 'web') {
247: $currentstring = $token->[2];
248: }
249: return $currentstring;
250: }
251:
252: #-- <option> tag (end tag optional)
253: sub start_option {
254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
255: my $currentstring = '';
256: if ($target eq 'web') {
257: $currentstring = $token->[4];
258: } elsif ($target eq 'tex') {
259: $Apache::londefdef::select++;
260: if ($Apache::londefdef::select == 1) {
261: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
262: } else {
263: $currentstring='\keephidden{';
264: }
265: }
266: return $currentstring;
267: }
268:
269: sub end_option {
270: my ($target,$token) = @_;
271: my $currentstring = '';
272: if ($target eq 'web') {
273: $currentstring = $token->[2];
274: } elsif ($target eq 'tex') {
275: $currentstring='}';
276: }
277: return $currentstring;
278: }
279:
280: #-- <input> tag (end tag forbidden)
281: sub start_input {
282: my ($target,$token) = @_;
283: my $currentstring = '';
284: if ($target eq 'web') {
285: $currentstring = $token->[4];
286: }
287: return $currentstring;
288: }
289:
290: sub end_input {
291: my ($target,$token) = @_;
292: my $currentstring = '';
293: if ($target eq 'web') {
294: $currentstring = $token->[2];
295: }
296: return $currentstring;
297: }
298:
299: #-- <textarea> tag (end tag required)
300: sub start_textarea {
301: my ($target,$token) = @_;
302: my $currentstring = '';
303: if ($target eq 'web') {
304: $currentstring = $token->[4];
305: }
306: return $currentstring;
307: }
308:
309: sub end_textarea {
310: my ($target,$token) = @_;
311: my $currentstring = '';
312: if ($target eq 'web') {
313: $currentstring = $token->[2];
314: }
315: return $currentstring;
316: }
317:
318: #-- <form> tag (end tag required)
319: sub start_form {
320: my ($target,$token) = @_;
321: my $currentstring = '';
322: if ($target eq 'web') {
323: $currentstring = $token->[4];
324: }
325: return $currentstring;
326: }
327:
328: sub end_form {
329: my ($target,$token) = @_;
330: my $currentstring = '';
331: if ($target eq 'web') {
332: $currentstring = $token->[2];
333: }
334: return $currentstring;
335: }
336:
337: #-- <title> tag (end tag required)
338: sub start_title {
339: my ($target,$token) = @_;
340: my $currentstring = '';
341: if ($target eq 'web') {
342: $currentstring = $token->[4];
343: } elsif ($target eq 'tex') {
344: $currentstring .= '\keephidden{Title of the document: '
345: }
346: if ($target eq 'meta') {
347: $currentstring='<title>';
348: &start_output($target);
349: }
350: return $currentstring;
351: }
352:
353: sub end_title {
354: my ($target,$token) = @_;
355: my $currentstring = '';
356: if ($target eq 'web') {
357: $currentstring = $token->[2];
358: } elsif ($target eq 'tex') {
359: $currentstring .= '}';
360: }
361: if ($target eq 'meta') {
362: &end_output($target);
363: $currentstring='</title>';
364: }
365: return $currentstring;
366: }
367:
368: #-- <meta> tag (end tag forbidden)
369: sub start_meta {
370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
371: my $currentstring = '';
372: if ($target eq 'web') {
373: my $args='';
374: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
375: if ($args eq '') {
376: &Apache::lonxml::get_all_text("/meta",$parser);
377: } else {
378: $currentstring = $token->[4];
379: }
380: } elsif ($target eq 'meta') {
381: unless (&Apache::lonxml::get_param
382: ('http-equiv',$parstack,$safeeval,undef,1)) {
383: my $name=$token->[2]->{'name'};
384: $name=~tr/A-Z/a-z/;
385: $name=~s/\s/\_/gs;
386: $name=~s/\W//gs;
387: if ($name) {
388: $currentstring='<'.$name;
389: my $display=&Apache::lonxml::get_param
390: ('display',$parstack,$safeeval,undef,1);
391: if ($display) {
392: $display=~s/\"/\'/g;
393: $currentstring.=' display="'.$display.'"';
394: }
395: $currentstring.='>'.
396: &Apache::lonxml::get_param
397: ('content',$parstack,$safeeval,undef,1).
398: '</'.$name.'>';
399: }
400: my $display=&Apache::lonxml::get_param
401: ('display',$parstack,$safeeval,undef,1);
402: if ($display) {
403: $display=&HTML::Entities::encode($display,'<>&"');
404: $currentstring.='<'.$name.'.display>'.$display.
405: '</'.$name.'.display>';
406: }
407: }
408: } elsif ($target eq 'tex') {
409: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
410: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
411: if ((not defined $content) && (not defined $name)) {
412: &Apache::lonxml::startredirection();
413: }
414: }
415: return $currentstring;
416: }
417:
418: sub end_meta {
419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
420: my $currentstring = '';
421: if ($target eq 'web') {
422: my $args='';
423: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
424: if ($args ne '') {
425: $currentstring = $token->[4];
426: }
427: } elsif ($target eq 'tex') {
428: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
429: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
430: if ((not defined $content) && (not defined $name)) {
431: &Apache::lonxml::endredirection();
432: }
433: }
434: return $currentstring;
435: }
436:
437: # accessrule
438: sub start_accessrule {
439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
440: my $currentstring = '';
441: my $eff=&Apache::lonxml::get_param
442: ('effect',$parstack,$safeeval,undef,1);
443: my $realm=&Apache::lonxml::get_param
444: ('realm',$parstack,$safeeval,undef,1);
445: my $role=&Apache::lonxml::get_param
446: ('role',$parstack,$safeeval,undef,1);
447: $realm=~s/\s+//g;
448: $realm=~s/\//\_/g;
449: $realm=~s/^\_//;
450: $realm=~s/\W/\;/g;
451: $role=~s/\s+//g;
452: $role=~s/\//\_/g;
453: $role=~s/\W/\;/g;
454: if ($target eq 'web') {
455: my $args='';
456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
457: if ($args eq '') {
458: &Apache::lonxml::get_all_text("/accessrule",$parser);
459: } else {
460: $currentstring = $token->[4];
461: }
462: }
463: if ($target eq 'meta') {
464: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
465: }
466: return $currentstring;
467: }
468:
469: sub end_accessrule {
470: my ($target,$token,$tagstack,$parstack,$parser) = @_;
471: my $currentstring = '';
472: if ($target eq 'web') {
473: my $args='';
474: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
475: if ($args ne '') {
476: $currentstring = $token->[4];
477: }
478: }
479: return $currentstring;
480: }
481:
482: #-- <body> tag (end tag required)
483: sub start_body {
484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
485: my $currentstring = '';
486:
487: if ($target eq 'web') {
488: if ($Apache::lonhomework::parsing_a_problem) {
489: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
490: return '';
491: }
492: if (!$Apache::lonxml::registered &&
493: $env{'request.state'} eq 'published') {
494: $currentstring.='<head>'.
495: &Apache::lonmenu::registerurl(undef,$target).'</head>';
496: }
497: # Accessibility
498: if ($env{'browser.imagesuppress'} eq 'on') {
499: delete($token->[2]->{'background'});
500: }
501: if ($env{'browser.fontenhance'} eq 'on') {
502: my $style='';
503: foreach my $key (keys(%{$token->[2]})) {
504: if ($key =~ /^style$/i) {
505: $style.=$token->[2]->{$key}.';';
506: delete($token->[2]->{$key});
507: }
508: }
509: $token->[2]->{'style'}=$style.'; font-size: x-large;';
510: }
511: if ($env{'browser.blackwhite'} eq 'on') {
512: delete($token->[2]->{'font'});
513: delete($token->[2]->{'link'});
514: delete($token->[2]->{'alink'});
515: delete($token->[2]->{'vlink'});
516: delete($token->[2]->{'bgcolor'});
517: delete($token->[2]->{'background'});
518: }
519: # Overload loads
520: my $onLoad='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^onload$/i) {
523: $onLoad.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
528: my $onUnload='';
529: foreach my $key (keys(%{$token->[2]})) {
530: if ($key =~ /^onunload$/i) {
531: $onUnload.=$token->[2]->{$key}.';';
532: delete($token->[2]->{$key});
533: }
534: }
535: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
536: ';'.$onUnload;
537:
538: $currentstring .= '<'.$token->[1];
539: foreach (keys %{$token->[2]}) {
540: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
541: }
542: $currentstring.='>';
543: if ($env{'request.state'} ne 'published') {
544: if ($env{'environment.remote'} eq 'off') {
545: $currentstring.=
546: &Apache::lonmenu::constspaceform().
547: &Apache::lonmenu::menubuttons(1,'web',1);
548: }
549: $currentstring.=(<<EDITBUTTON);
550: <form method="post">
551: <input type="submit" name="editmode" accesskey="e" value="Edit" />
552: </form>
553: EDITBUTTON
554: } else {
555: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
556: }
557: $currentstring.=&Apache::lonxml::message_location();
558: } elsif ($target eq 'tex') {
559: $currentstring = '\begin{document}';
560: }
561: return $currentstring;
562: }
563:
564: sub end_body {
565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
566: my $currentstring = &end_p(); # Close off unclosed <p>
567: if ($target eq 'web') {
568: $currentstring .= &Apache::lonxml::xmlend($target,$parser);
569: } elsif ($target eq 'tex') {
570: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
571: }
572: return $currentstring;
573: }
574:
575: #-- <center> tag (end tag required)
576: sub start_center {
577: my ($target,$token) = @_;
578: my $currentstring = &end_p(); # Close off any prior para.
579: if ($target eq 'web') {
580: $currentstring .= $token->[4];
581: } elsif ($target eq 'tex') {
582: $currentstring .= '\begin{center}';
583: }
584: return $currentstring;
585: }
586:
587: sub end_center {
588: my ($target,$token) = @_;
589: my $currentstring = '';
590: if ($target eq 'web') {
591: $currentstring = $token->[2];
592: } elsif ($target eq 'tex') {
593: $currentstring = '\end{center}';
594: }
595: return $currentstring;
596: }
597:
598: #-- <b> tag (end tag required)
599: # NOTE: In TeX mode disables internal <p>
600: sub start_b {
601: my ($target,$token) = @_;
602: my $currentstring = '';
603: if ($target eq 'web') {
604: $currentstring = $token->[4];
605: } elsif ($target eq 'tex') {
606: &disable_para();
607: $currentstring .= '\textbf{';
608: }
609: return $currentstring;
610: }
611:
612: sub end_b {
613: my ($target,$token) = @_;
614: my $currentstring = '';
615: if ($target eq 'web') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: &enable_para();
619: $currentstring = '}';
620: }
621: return $currentstring;
622: }
623:
624: #-- <strong> tag (end tag required)
625: # NOTE: in TeX mode disables internal <p>
626: sub start_strong {
627: my ($target,$token) = @_;
628: my $currentstring = '';
629: if ($target eq 'web') {
630: $currentstring = $token->[4];
631: } elsif ($target eq 'tex') {
632: &disable_para();
633: $currentstring = '\textbf{';
634: }
635: return $currentstring;
636: }
637:
638: sub end_strong {
639: my ($target,$token) = @_;
640: my $currentstring = '';
641: if ($target eq 'web') {
642: $currentstring = $token->[2];
643: } elsif ($target eq 'tex') {
644: &enable_para();
645: $currentstring = '}';
646: }
647: return $currentstring;
648: }
649:
650: #-- <h1> tag (end tag required)
651: sub start_h1 {
652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
653: my $currentstring = &end_p(); # Close off any prior para.
654: if ($target eq 'web') {
655: $currentstring .= $token->[4];
656: } elsif ($target eq 'tex') {
657: my $pre;
658: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
659: if ($align eq 'center') {
660: $pre='\begin{center}';
661: } elsif ($align eq 'left') {
662: $pre='\rlap{';
663: } elsif ($align eq 'right') {
664: $pre=' \hfill \llap{';
665: }
666: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
667: if (not defined $TeXsize) {$TeXsize="large";}
668: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
669: } elsif ($target eq 'meta') {
670: $currentstring.='<subject>';
671: &start_output($target);
672: }
673: return $currentstring;
674: }
675:
676: sub end_h1 {
677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
678: my $currentstring = '';
679: if ($target eq 'web') {
680: $currentstring .= $token->[2];
681: } elsif ($target eq 'tex') {
682: my $post='\vskip 0 mm ';
683: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
684: if ($align eq 'center') {
685: $post='\end{center}';
686: } elsif ($align eq 'left') {
687: $post='} \hfill'.'\vskip 0 mm ';
688: } elsif ($align eq 'right') {
689: $post='}'.'\vskip 0 mm ';
690: }
691: $currentstring .= '}}'.$post;
692: } elsif ($target eq 'meta') {
693: &end_output($target);
694: $currentstring='</subject>';
695: }
696: return $currentstring;
697: }
698:
699: #-- <h2> tag
700: sub start_h2 {
701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
702: my $currentstring = &end_p(); # Close off any prior para.
703: if ($target eq 'web') {
704: $currentstring .= $token->[4];
705: } elsif ($target eq 'tex') {
706: my $pre;
707: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
708: if ($align eq 'center') {
709: $pre='\begin{center}';
710: } elsif ($align eq 'left') {
711: $pre='\rlap{';
712: } elsif ($align eq 'right') {
713: $pre=' \hfill \llap{';
714: }
715: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
716: if (not defined $TeXsize) {$TeXsize="large";}
717: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
718: }
719: return $currentstring;
720: }
721:
722: sub end_h2 {
723: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
724: my $currentstring = '';
725: if ($target eq 'web') {
726: $currentstring .= $token->[2];
727: } elsif ($target eq 'tex') {
728: my $post='\vskip 0 mm ';
729: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
730: if ($align eq 'center') {
731: $post='\end{center}';
732: } elsif ($align eq 'left') {
733: $post='} \hfill'.'\vskip 0 mm ';
734: } elsif ($align eq 'right') {
735: $post='}'.'\vskip 0 mm ';
736: }
737: $currentstring .= '}}'.$post;
738: }
739: return $currentstring;
740: }
741:
742: #-- <h3> tag
743: sub start_h3 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = &end_p(); # Close off any prior para.
746: if ($target eq 'web') {
747: $currentstring .= $token->[4];
748: } elsif ($target eq 'tex') {
749: my $pre;
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if ($align eq 'center') {
752: $pre='\begin{center}';
753: } elsif ($align eq 'left') {
754: $pre='\rlap{';
755: } elsif ($align eq 'right') {
756: $pre=' \hfill \llap{';
757: }
758: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
759: if (not defined $TeXsize) {$TeXsize="large";}
760: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
761: }
762: return $currentstring;
763: }
764:
765: sub end_h3 {
766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
767: my $currentstring = '';
768: if ($target eq 'web') {
769: $currentstring .= $token->[2];
770: } elsif ($target eq 'tex') {
771: my $post='\vskip 0 mm ';
772: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
773: if ($align eq 'center') {
774: $post='\end{center}';
775: } elsif ($align eq 'left') {
776: $post='} \hfill'.'\vskip 0 mm ';
777: } elsif ($align eq 'right') {
778: $post='}'.'\vskip 0 mm ';
779: }
780: $currentstring .= '}}'.$post;
781: }
782: return $currentstring;
783: }
784:
785: #-- <h4> tag
786: sub start_h4 {
787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
788: my $currentstring = &end_p(); # Close off any prior para.
789: if ($target eq 'web') {
790: $currentstring .= $token->[4];
791: } elsif ($target eq 'tex') {
792: my $pre;
793: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
794: if ($align eq 'center') {
795: $pre='\begin{center}';
796: } elsif ($align eq 'left') {
797: $pre='\rlap{';
798: } elsif ($align eq 'right') {
799: $pre=' \hfill \llap{';
800: }
801: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
802: if (not defined $TeXsize) {$TeXsize="large";}
803: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
804: }
805: return $currentstring;
806: }
807:
808: sub end_h4 {
809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
810: my $currentstring = '';
811: if ($target eq 'web') {
812: $currentstring .= $token->[2];
813: } elsif ($target eq 'tex') {
814: my $post='\vskip 0 mm ';
815: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
816: if ($align eq 'center') {
817: $post='\end{center}';
818: } elsif ($align eq 'left') {
819: $post='} \hfill'.'\vskip 0 mm ';
820: } elsif ($align eq 'right') {
821: $post='}'.'\vskip 0 mm ';
822: }
823: $currentstring .= '}}'.$post;
824: }
825: return $currentstring;
826: }
827:
828: #-- <h5> tag
829: sub start_h5 {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
831: my $currentstring = &end_p(); # Close off any prior paras.
832: if ($target eq 'web') {
833: $currentstring .= $token->[4];
834: } elsif ($target eq 'tex') {
835: my $pre;
836: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
837: if ($align eq 'center') {
838: $pre='\begin{center}';
839: } elsif ($align eq 'left') {
840: $pre='\rlap{';
841: } elsif ($align eq 'right') {
842: $pre=' \hfill \llap{';
843: }
844: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
845: if (not defined $TeXsize) {$TeXsize="large";}
846: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
847: }
848: return $currentstring;
849: }
850:
851: sub end_h5 {
852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
853: my $currentstring = '';
854: if ($target eq 'web') {
855: $currentstring .= $token->[2];
856: } elsif ($target eq 'tex') {
857: my $post='\vskip 0 mm ';
858: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
859: if ($align eq 'center') {
860: $post='\end{center}';
861: } elsif ($align eq 'left') {
862: $post='} \hfill'.'\vskip 0 mm ';
863: } elsif ($align eq 'right') {
864: $post='}'.'\vskip 0 mm ';
865: }
866: $currentstring .= '}}'.$post;
867: }
868: return $currentstring;
869: }
870:
871: #-- <h6> tag
872: sub start_h6 {
873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
874: my $currentstring = &end_p(); # Close off any prior paras.
875: if ($target eq 'web') {
876: $currentstring .= $token->[4];
877: } elsif ($target eq 'tex') {
878: my $pre;
879: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
880: if ($align eq 'center') {
881: $pre='\begin{center}';
882: } elsif ($align eq 'left') {
883: $pre='\rlap{';
884: } elsif ($align eq 'right') {
885: $pre=' \hfill \llap{';
886: }
887: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
888: if (not defined $TeXsize) {$TeXsize="large";}
889: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
890: }
891: return $currentstring;
892: }
893:
894: sub end_h6 {
895: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
896: my $currentstring = '';
897: if ($target eq 'web') {
898: $currentstring .= $token->[2];
899: } elsif ($target eq 'tex') {
900: my $post='\vskip 0 mm ';
901: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
902: if ($align eq 'center') {
903: $post='\end{center}';
904: } elsif ($align eq 'left') {
905: $post='} \hfill'.'\vskip 0 mm ';
906: } elsif ($align eq 'right') {
907: $post='}'.'\vskip 0 mm ';
908: }
909: $currentstring .= '}}'.$post;
910: }
911: return $currentstring;
912: }
913:
914: #--- <cite> tag (end tag required)
915: sub start_cite {
916: my ($target,$token) = @_;
917: my $currentstring = '';
918: if ($target eq 'web') {
919: $currentstring .= $token->[4];
920: } elsif ($target eq 'tex') {
921: $currentstring .= '\textit{';
922: }
923: return $currentstring;
924: }
925:
926: sub end_cite {
927: my ($target,$token) = @_;
928: my $currentstring = '';
929: if ($target eq 'web') {
930: $currentstring .= $token->[2];
931: } elsif ($target eq 'tex') {
932: $currentstring .= '}';
933: }
934: return $currentstring;
935: }
936:
937: #-- <i> tag (end tag required)
938: sub start_i {
939: my ($target,$token) = @_;
940: my $currentstring = '';
941: if ($target eq 'web') {
942: $currentstring .= $token->[4];
943: } elsif ($target eq 'tex') {
944: $currentstring .= '\textit{';
945: }
946: return $currentstring;
947: }
948:
949: sub end_i {
950: my ($target,$token) = @_;
951: my $currentstring = '';
952: if ($target eq 'web') {
953: $currentstring .= $token->[2];
954: } elsif ($target eq 'tex') {
955: $currentstring .= '}';
956: }
957: return $currentstring;
958: }
959:
960: #-- <address> tag (end tag required)
961: sub start_address {
962: my ($target,$token) = @_;
963: my $currentstring = '';
964: if ($target eq 'web') {
965: $currentstring .= $token->[4];
966: } elsif ($target eq 'tex') {
967: $currentstring .= '\textit{';
968: }
969: return $currentstring;
970: }
971:
972: sub end_address {
973: my ($target,$token) = @_;
974: my $currentstring = '';
975: if ($target eq 'web') {
976: $currentstring .= $token->[2];
977: } elsif ($target eq 'tex') {
978: $currentstring .= '}';
979: }
980: return $currentstring;
981: }
982:
983: #-- <dfn> tag (end tag required)
984: sub start_dfn {
985: my ($target,$token) = @_;
986: my $currentstring = '';
987: if ($target eq 'web') {
988: $currentstring .= $token->[4];
989: } elsif ($target eq 'tex') {
990: $currentstring .= '\textit{';
991: }
992: return $currentstring;
993: }
994:
995: sub end_dfn {
996: my ($target,$token) = @_;
997: my $currentstring = '';
998: if ($target eq 'web') {
999: $currentstring .= $token->[2];
1000: } elsif ($target eq 'tex') {
1001: $currentstring .= '}';
1002: }
1003: return $currentstring;
1004: }
1005:
1006: #-- <tt> tag (end tag required)
1007: sub start_tt {
1008: my ($target,$token) = @_;
1009: my $currentstring = '';
1010: if ($target eq 'web') {
1011: $currentstring .= $token->[4];
1012: } elsif ($target eq 'tex') {
1013: $currentstring .= '\texttt{';
1014: }
1015: return $currentstring;
1016: }
1017:
1018: sub end_tt {
1019: my ($target,$token) = @_;
1020: my $currentstring = '';
1021: if ($target eq 'web') {
1022: $currentstring .= $token->[2];
1023: } elsif ($target eq 'tex') {
1024: $currentstring .= '}';
1025: }
1026: return $currentstring;
1027: }
1028:
1029: #-- <kbd> tag (end tag required)
1030: sub start_kbd {
1031: my ($target,$token) = @_;
1032: my $currentstring = '';
1033: if ($target eq 'web') {
1034: $currentstring .= $token->[4];
1035: } elsif ($target eq 'tex') {
1036: $currentstring .= '\texttt{';
1037: }
1038: return $currentstring;
1039: }
1040:
1041: sub end_kbd {
1042: my ($target,$token) = @_;
1043: my $currentstring = '';
1044: if ($target eq 'web') {
1045: $currentstring .= $token->[2];
1046: } elsif ($target eq 'tex') {
1047: $currentstring .= '}';
1048: }
1049: return $currentstring;
1050: }
1051:
1052: #-- <code> tag (end tag required)
1053: sub start_code {
1054: my ($target,$token) = @_;
1055: my $currentstring = '';
1056: if ($target eq 'web') {
1057: $currentstring .= $token->[4];
1058: } elsif ($target eq 'tex') {
1059: $currentstring .= '\texttt{';
1060: }
1061: return $currentstring;
1062: }
1063:
1064: sub end_code {
1065: my ($target,$token) = @_;
1066: my $currentstring = '';
1067: if ($target eq 'web') {
1068: $currentstring .= $token->[2];
1069: } elsif ($target eq 'tex') {
1070: $currentstring .= '}';
1071: }
1072: return $currentstring;
1073: }
1074:
1075: #-- <em> tag (end tag required)
1076: sub start_em {
1077: my ($target,$token) = @_;
1078: my $currentstring = '';
1079: if ($target eq 'web') {
1080: $currentstring .= $token->[4];
1081: } elsif ($target eq 'tex') {
1082: $currentstring .= '\emph{';
1083: }
1084: return $currentstring;
1085: }
1086:
1087: sub end_em {
1088: my ($target,$token) = @_;
1089: my $currentstring = '';
1090: if ($target eq 'web') {
1091: $currentstring .= $token->[2];
1092: } elsif ($target eq 'tex') {
1093: $currentstring .= '}';
1094: }
1095: return $currentstring;
1096: }
1097:
1098: #-- <q> tag (end tag required)
1099: sub start_q {
1100: my ($target,$token) = @_;
1101: my $currentstring = '';
1102: if ($target eq 'web') {
1103: $currentstring .= $token->[4];
1104: } elsif ($target eq 'tex') {
1105: $currentstring .= '\emph{';
1106: }
1107: return $currentstring;
1108: }
1109:
1110: sub end_q {
1111: my ($target,$token) = @_;
1112: my $currentstring = '';
1113: if ($target eq 'web') {
1114: $currentstring .= $token->[2];
1115: } elsif ($target eq 'tex') {
1116: $currentstring .= '}';
1117: }
1118: return $currentstring;
1119: }
1120:
1121: # <p> is a bit strange since it does not require a closing </p>
1122: # However in latex, we must often output closing stuff to end
1123: # environments and {}'s etc. Therefore we do all the work
1124: # of figuring out the ending strings in the start tag processing,
1125: # and provide a mechanism to output the stop text external
1126: # to tag processing.
1127: #
1128: {
1129:
1130: my $closing_string = ''; # String required to close <p>
1131:
1132: # Some tags are <p> fragile meaning that <p> inside of them
1133: # does not work within TeX mode. This is managed via the
1134: # counter below:
1135: #
1136:
1137: my $para_disabled = 0;
1138:
1139: sub disable_para {
1140: $para_disabled++;
1141: }
1142: sub enable_para {
1143: $para_disabled--;
1144: }
1145:
1146:
1147: #-- <p> tag (end tag optional)
1148: #optional attribute - align="center|left|right"
1149: sub start_p {
1150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1151: my $currentstring = '';
1152: if ($target eq 'web') {
1153: $currentstring .= &end_p(); # close off prior para if in progress.
1154: $currentstring .= $token->[4];
1155: if (! ($currentstring =~ /\//)) {
1156: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1157: }
1158: } elsif ($target eq 'tex' && !$para_disabled) {
1159: $currentstring .= &end_p(); # close off prior para if in progress.
1160: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1161: if ($align eq 'center') {
1162: $currentstring .='\begin{center}\par';
1163: $closing_string = '\end{center}';
1164: } elsif ($align eq 'right') {
1165: $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1166: $closing_string= '}}';
1167: } elsif ($align eq 'left') {
1168: $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
1169: $closing_string = '}\hfill}';
1170: } else {
1171: $currentstring.='\par ';
1172: $closing_string = '\strut\\\\\strut ';
1173: }
1174:
1175: }
1176: return $currentstring;
1177: }
1178: #
1179: # End paragraph processing just requires that we output the
1180: # closing string that was saved and blank it.
1181: sub end_p {
1182: # Note only 'tex' mode uses disable_para and enable_para
1183: # so we don't need to know the target in the check below:
1184:
1185: if (!$para_disabled) {
1186: my $current_string = $closing_string;
1187: $closing_string = ''; # Not in a para anymore.
1188: return $current_string;
1189: } else {
1190: return '';
1191: }
1192:
1193: }
1194: }
1195: #-- <br> tag (end tag forbidden)
1196: sub start_br {
1197: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1198: my $currentstring = '';
1199: if ($target eq 'web') {
1200: $currentstring .= $token->[4];
1201: } elsif ($target eq 'tex') {
1202: my @tempo=@$tagstack;
1203: my $signal=0;
1204: for (my $i=$#tempo;$i>=0;$i--) {
1205: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1206: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1207: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1208: $signal=1;
1209: last;
1210: }
1211: }
1212: if ($signal) {
1213: $currentstring .= ' \vskip 0 mm ';
1214: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1215: $currentstring .= '\strut \\\\ \strut ';
1216: }
1217: }
1218: return $currentstring;
1219: }
1220:
1221: sub end_br {
1222: my ($target,$token) = @_;
1223: my $currentstring = '';
1224: if ($target eq 'web') {
1225: $currentstring .= $token->[2];
1226: }
1227: return $currentstring;
1228: }
1229:
1230: #-- <big> tag (end tag required)
1231: sub start_big {
1232: my ($target,$token) = @_;
1233: my $currentstring = '';
1234: if ($target eq 'web') {
1235: $currentstring .= $token->[4];
1236: } elsif ($target eq 'tex') {
1237: $currentstring .= '{\large ';
1238: }
1239: return $currentstring;
1240: }
1241:
1242: sub end_big {
1243: my ($target,$token) = @_;
1244: my $currentstring = '';
1245: if ($target eq 'web') {
1246: $currentstring .= $token->[2];
1247: } elsif ($target eq 'tex') {
1248: $currentstring .= '}';
1249: }
1250: return $currentstring;
1251: }
1252:
1253: #-- <small> tag (end tag required)
1254: sub start_small {
1255: my ($target,$token) = @_;
1256: my $currentstring = '';
1257: if ($target eq 'web') {
1258: $currentstring .= $token->[4];
1259: } elsif ($target eq 'tex') {
1260: $currentstring .= '{\footnotesize ';
1261: }
1262: return $currentstring;
1263: }
1264:
1265: sub end_small {
1266: my ($target,$token) = @_;
1267: my $currentstring = '';
1268: if ($target eq 'web') {
1269: $currentstring .= $token->[2];
1270: } elsif ($target eq 'tex') {
1271: $currentstring .= '}';
1272: }
1273: return $currentstring;
1274: }
1275:
1276: #-- <basefont> tag (end tag forbidden)
1277: sub start_basefont {
1278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1279: my $currentstring = '';
1280: if ($target eq 'web') {
1281: $currentstring = $token->[4];
1282: } elsif ($target eq 'tex') {
1283: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1284: if (defined $basesize) {
1285: $currentstring = '{\\'.$basesize.' ';
1286: }
1287: }
1288: return $currentstring;
1289: }
1290:
1291: sub end_basefont {
1292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1293: my $currentstring = '';
1294: if ($target eq 'web') {
1295: $currentstring = $token->[4];
1296: } elsif ($target eq 'tex') {
1297: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1298: if (defined $basesize) {
1299: $currentstring = '}';
1300: }
1301: }
1302: return $currentstring;
1303: }
1304:
1305: #-- <font> tag (end tag required)
1306: sub start_font {
1307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1308: my $currentstring = '';
1309: if ($target eq 'web') {
1310: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1311: if ($face!~/symbol/i) {
1312: if (($env{'browser.fontenhance'} eq 'on') ||
1313: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1314: }
1315: $currentstring = $token->[4];
1316: } elsif ($target eq 'tex') {
1317: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1318: if (defined $fontsize) {
1319: $currentstring = '{\\'.$fontsize.' ';
1320: }
1321: }
1322: return $currentstring;
1323: }
1324:
1325: sub end_font {
1326: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1327: my $currentstring = '';
1328: if ($target eq 'web') {
1329: $currentstring = $token->[2];
1330: } elsif ($target eq 'tex') {
1331: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1332: if (defined $fontsize) {
1333: $currentstring = '}';
1334: }
1335: }
1336: return $currentstring;
1337: }
1338:
1339: #-- <strike> tag (end tag required)
1340: sub start_strike {
1341: my ($target,$token) = @_;
1342: my $currentstring = '';
1343: if ($target eq 'web') {
1344: $currentstring .= $token->[4];
1345: } elsif ($target eq 'tex') {
1346: &Apache::lonxml::startredirection();
1347: }
1348: return $currentstring;
1349: }
1350:
1351: sub end_strike {
1352: my ($target,$token) = @_;
1353: my $currentstring = '';
1354: if ($target eq 'web') {
1355: $currentstring .= $token->[2];
1356: } elsif ($target eq 'tex') {
1357: $currentstring=&Apache::lonxml::endredirection();
1358: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1359: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1360: $currentstring=~s/(\S)\s*$/$1\}/;
1361: }
1362: return $currentstring;
1363: }
1364:
1365: #-- <s> tag (end tag required)
1366: sub start_s {
1367: my ($target,$token) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web') {
1370: $currentstring .= $token->[4];
1371: } elsif ($target eq 'tex') {
1372: &Apache::lonxml::startredirection();
1373: }
1374: return $currentstring;
1375: }
1376:
1377: sub end_s {
1378: my ($target,$token) = @_;
1379: my $currentstring = '';
1380: if ($target eq 'web') {
1381: $currentstring .= $token->[2];
1382: } elsif ($target eq 'tex') {
1383: $currentstring=&Apache::lonxml::endredirection();
1384: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1385: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1386: $currentstring=~s/(\S)\s*$/$1\}/;
1387: }
1388: return $currentstring;
1389: }
1390:
1391: #-- <sub> tag (end tag required)
1392: sub start_sub {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web') {
1396: $currentstring .= $token->[4];
1397: } elsif ($target eq 'tex') {
1398: $currentstring .= '\ensuremath{_{';
1399: }
1400: return $currentstring;
1401: }
1402:
1403: sub end_sub {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web') {
1407: $currentstring .= $token->[2];
1408: } elsif ($target eq 'tex') {
1409: $currentstring .= '}}';
1410: }
1411: return $currentstring;
1412: }
1413:
1414: #-- <sup> tag (end tag required)
1415: sub start_sup {
1416: my ($target,$token) = @_;
1417: my $currentstring = '';
1418: if ($target eq 'web') {
1419: $currentstring .= $token->[4];
1420: } elsif ($target eq 'tex') {
1421: $currentstring .= '\ensuremath{^{';
1422: }
1423: return $currentstring;
1424: }
1425:
1426: sub end_sup {
1427: my ($target,$token) = @_;
1428: my $currentstring = '';
1429: if ($target eq 'web') {
1430: $currentstring .= $token->[2];
1431: } elsif ($target eq 'tex') {
1432: $currentstring .= '}}';
1433: }
1434: return $currentstring;
1435: }
1436:
1437: #-- <hr> tag (end tag forbidden)
1438: sub start_hr {
1439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1440: my $currentstring = &end_p(); # End enclosing para.
1441: if ($target eq 'web') {
1442: $currentstring .= $token->[4];
1443: } elsif ($target eq 'tex') {
1444: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1445: if (defined $LaTeXwidth) {
1446: if ($LaTeXwidth=~/^%/) {
1447: substr($LaTeXwidth,0,1)='';
1448: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1449: }
1450: } else {
1451: $LaTeXwidth ='0.9\textwidth';
1452: }
1453: my ($pre,$post);
1454: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1455: if (($align eq 'center') || (not defined $align)) {
1456: $pre=''; $post='';
1457: } elsif ($align eq 'left') {
1458: $pre='\rlap{'; $post='} \hfill';
1459: } elsif ($align eq 'right') {
1460: $pre=' \hfill \llap{'; $post='}';
1461: }
1462: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1463: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1464: }
1465: return $currentstring;
1466: }
1467:
1468: sub end_hr {
1469: my ($target,$token) = @_;
1470: my $currentstring = '';
1471: if ($target eq 'web') {
1472: $currentstring .= $token->[2];
1473: }
1474: return $currentstring;
1475: }
1476:
1477: #-- <div> tag (end tag required)
1478: {
1479:
1480: # Since div can be nested, the stack below is used
1481: # in 'tex' mode to store the ending strings
1482: # for the div stack.
1483:
1484: my @div_end_stack;
1485:
1486: sub start_div {
1487: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1488: my $currentstring = &end_p(); # Close enclosing para.
1489: if ($target eq 'web') {
1490: $currentstring .= $token->[4];
1491: }
1492: if ($target eq 'tex') {
1493: # 4 possible alignments: left, right, center, and -missing-.
1494:
1495: my $endstring = '';
1496:
1497: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1498: $safeeval, undef, 1));
1499: if ($align eq 'center') {
1500: $currentstring .= '\begin{center}';
1501: $endstring = '\end{center}';
1502: }
1503: elsif ($align eq 'right') {
1504: $currentstring .= '\begin{flushright}';
1505: $endstring .= '\end{flushright}';
1506: } elsif ($align eq 'left') {
1507: $currentstring .= '\begin{flushleft}';
1508: $endstring = '\end{flushleft}';
1509: } else {
1510:
1511: }
1512: $currentstring .= "\n"; # For human readability.
1513: $endstring = "\n$endstring\n"; # For human readability
1514: push(@div_end_stack, $endstring);
1515: }
1516: return $currentstring;
1517: }
1518:
1519: sub end_div {
1520: my ($target,$token) = @_;
1521: my $currentstring = '';
1522: if ($target eq 'web') {
1523: $currentstring .= $token->[2];
1524: }
1525: if ($target eq 'tex') {
1526: my $endstring = pop @div_end_stack;
1527: $currentstring .= $endstring;
1528: }
1529: return $currentstring;
1530: }
1531: }
1532:
1533: #-- <a> tag (end tag required)
1534: sub start_a {
1535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1536: my $currentstring = '';
1537: if ($target eq 'web') {
1538: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1539: undef,1);
1540: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1541: } elsif ($target eq 'tex') {
1542: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1543: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1544: if ($a=~/\S/) {
1545: $a=~s/([^\\])%/$1\\\%/g;
1546: $currentstring .= '\ref{URI: '.$a.'}';
1547: } elsif ($b=~/\S/) {
1548: $currentstring .= '\ref{Anchor: '.$b.'}';
1549: } else {
1550: $currentstring.='';
1551: }
1552: }
1553: return $currentstring;
1554: }
1555:
1556: sub end_a {
1557: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1558: my $currentstring = '';
1559: if ($target eq 'web') {
1560: $currentstring .= $token->[2];
1561: }
1562: return $currentstring;
1563: }
1564:
1565: #-- <li> tag (end tag optional)
1566: sub start_li {
1567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1568: my $currentstring = '';
1569: if ($target eq 'web') {
1570: $currentstring = $token->[4];
1571: } elsif ($target eq 'tex') {
1572: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1573: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1574: #FIXME need to support types i and I
1575: if ($type=~/disc/) {
1576: $currentstring .= ' \item[$\bullet$] ';
1577: } elsif ($type=~/circle/) {
1578: $currentstring .= ' \item[$\circ$] ';
1579: } elsif ($type=~/square/) {
1580: $currentstring .= ' \item[$\diamond$] ';
1581: } elsif ($type eq '1') {
1582: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1583: } elsif ($type eq 'A') {
1584: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1585: } elsif ($type eq 'a') {
1586: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1587: } elsif ($value ne '') {
1588: $currentstring .= ' \item['.$value.'] ';
1589: } else {
1590: $currentstring .= ' \item ';
1591: }
1592: $Apache::londefdef::list_index++;
1593: }
1594: return $currentstring;
1595: }
1596:
1597: sub end_li {
1598: my ($target,$token) = @_;
1599: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1600: if ($target eq 'web') {
1601: $currentstring .= $token->[2];
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <u> tag (end tag required)
1607: sub start_u {
1608: my ($target,$token) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring .= $token->[4];
1612: } elsif ($target eq 'tex') {
1613: &Apache::lonxml::startredirection();
1614: }
1615: return $currentstring;
1616: }
1617:
1618: sub end_u {
1619: my ($target,$token) = @_;
1620: my $currentstring = '';
1621: if ($target eq 'web') {
1622: $currentstring .= $token->[2];
1623: } elsif ($target eq 'tex') {
1624: $currentstring=&Apache::lonxml::endredirection();
1625: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1626: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1627: $currentstring=~s/(\S)\s*$/$1\}/;
1628: }
1629: return $currentstring;
1630: }
1631:
1632: #-- <ul> tag (end tag required)
1633: sub start_ul {
1634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1635: my $currentstring = &end_p(); # Close off enclosing list.
1636: if ($target eq 'web') {
1637: $currentstring .= $token->[4];
1638: } elsif ($target eq 'tex') {
1639: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1640: $Apache::londefdef::list_index=0;
1641: if ($TeXtype eq 'disc') {
1642: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1643: '\renewcommand{\labelitemii}{$\bullet$}'.
1644: '\renewcommand{\labelitemiii}{$\bullet$}'.
1645: '\renewcommand{\labelitemiv}{$\bullet$}';
1646: } elsif ($TeXtype eq 'circle') {
1647: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1648: '\renewcommand{\labelitemii}{$\circ$}'.
1649: '\renewcommand{\labelitemiii}{$\circ$}'.
1650: '\renewcommand{\labelitemiv}{$\circ$}';
1651: } elsif ($TeXtype eq 'square') {
1652: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1653: '\renewcommand{\labelitemii}{$\diamond$}'.
1654: '\renewcommand{\labelitemiii}{$\diamond$}'.
1655: '\renewcommand{\labelitemiv}{$\diamond$}';
1656: }
1657: $currentstring .= '\strut \begin{itemize}';
1658: }
1659: return $currentstring;
1660: }
1661:
1662: sub end_ul {
1663: my ($target,$token) = @_;
1664: my $currentstring = '';
1665: if ($target eq 'web') {
1666: $currentstring = $token->[2];
1667: } elsif ($target eq 'tex') {
1668: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1669: '\renewcommand{\labelitemii}{$\bullet$}'.
1670: '\renewcommand{\labelitemiii}{$\bullet$}'.
1671: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1672: }
1673: return $currentstring;
1674: }
1675:
1676: #-- <menu> tag (end tag required)
1677: sub start_menu {
1678: my ($target,$token) = @_;
1679: my $currentstring = '';
1680: if ($target eq 'web') {
1681: $currentstring = $token->[4];
1682: } elsif ($target eq 'tex') {
1683: $currentstring = " \\begin{itemize} ";
1684: }
1685: return $currentstring;
1686: }
1687:
1688: sub end_menu {
1689: my ($target,$token) = @_;
1690: my $currentstring = '';
1691: if ($target eq 'web') {
1692: $currentstring = $token->[2];
1693: } elsif ($target eq 'tex') {
1694: $currentstring = " \\end{itemize}";
1695: }
1696: return $currentstring;
1697: }
1698:
1699: #-- <dir> tag (end tag required)
1700: sub start_dir {
1701: my ($target,$token) = @_;
1702: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1703: if ($target eq 'web') {
1704: $currentstring .= $token->[4];
1705: } elsif ($target eq 'tex') {
1706: $currentstring .= " \\begin{itemize} ";
1707: }
1708: return $currentstring;
1709: }
1710:
1711: sub end_dir {
1712: my ($target,$token) = @_;
1713: my $currentstring = '';
1714: if ($target eq 'web') {
1715: $currentstring = $token->[2];
1716: } elsif ($target eq 'tex') {
1717: $currentstring = " \\end{itemize}";
1718: }
1719: return $currentstring;
1720: }
1721:
1722: #-- <ol> tag (end tag required)
1723: sub start_ol {
1724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1725: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1726: if ($target eq 'web') {
1727: $currentstring .= $token->[4];
1728: } elsif ($target eq 'tex') {
1729: $Apache::londefdef::list_index=0;
1730: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1731: if ($type eq '1') {
1732: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1733: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1734: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1735: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1736: } elsif ($type eq 'A') {
1737: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1738: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1739: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1740: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1741: } elsif ($type eq 'a') {
1742: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1743: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1744: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1745: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1746: } elsif ($type eq 'i') {
1747: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1748: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1749: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1750: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1751: } elsif ($type eq 'I') {
1752: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1753: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1754: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1755: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1756: }
1757: $currentstring .= '\strut \begin{enumerate}';
1758: }
1759: return $currentstring;
1760: }
1761:
1762: sub end_ol {
1763: my ($target,$token) = @_;
1764: my $currentstring = '';
1765: if ($target eq 'web') {
1766: $currentstring = $token->[2];
1767: } elsif ($target eq 'tex') {
1768: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1769: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1770: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1771: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1772: }
1773: return $currentstring;
1774: }
1775:
1776: #-- <dl> tag (end tag required)
1777: sub start_dl {
1778: my ($target,$token) = @_;
1779: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1780: if ($target eq 'web') {
1781: $currentstring .= $token->[4];
1782: } elsif ($target eq 'tex') {
1783: $currentstring .= '\begin{description}';
1784: $Apache::londefdef::DL++;
1785: push(@Apache::londefdef::description,[]);
1786: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1787: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1788: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1789: }
1790: return $currentstring;
1791: }
1792:
1793: sub end_dl {
1794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1795: my $currentstring = '';
1796: if ($target eq 'web') {
1797: $currentstring = $token->[2];
1798: } elsif ($target eq 'tex') {
1799: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1800: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1801: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1802: $currentstring.=' '.$element.' ';
1803: }
1804: pop(@Apache::londefdef::description);
1805: $currentstring.='\end{description}';
1806: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1807: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1808: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1809: $Apache::londefdef::DL--;
1810: }
1811: return $currentstring;
1812: }
1813:
1814: #-- <dt> tag (end tag optional)
1815: sub start_dt {
1816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1817: my $currentstring='';
1818: if ($target eq 'web') {
1819: $currentstring = $token->[4];
1820: } elsif ($target eq 'tex') {
1821: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1822: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1823: &Apache::lonxml::startredirection();
1824: $Apache::londefdef::DT[-1]++;
1825: $Apache::londefdef::seenDT[-1]=1;
1826: }
1827: return $currentstring;
1828: }
1829:
1830: sub end_dt {
1831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1832: my $currentstring = '';
1833: if ($target eq 'web') {
1834: $currentstring = $token->[2];
1835: } elsif ($target eq 'tex') {
1836: if ($Apache::londefdef::DT[-1]) {
1837: my $data=&item_cleanup();
1838: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1839: $Apache::londefdef::DT[-1]--;
1840: }
1841: }
1842: return $currentstring;
1843: }
1844:
1845: sub item_cleanup {
1846: my $item=&Apache::lonxml::endredirection();
1847: $item=~s/\\begin{center}//g;
1848: $item=~s/\\end{center}//g;
1849: return $item;
1850: }
1851:
1852: #-- <dd> tag (end tag optional)
1853: sub start_dd {
1854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1855: my $currentstring = '';
1856: if ($target eq 'web') {
1857: $currentstring = $token->[4];
1858: } elsif ($target eq 'tex') {
1859: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1860: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1861: if (!$Apache::londefdef::seenDT[-1]) {
1862: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1863: }
1864: push(@{$Apache::londefdef::description[-1]},'');
1865: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1866: $Apache::londefdef::DD[-1]++;
1867: &Apache::lonxml::startredirection();
1868: }
1869: return $currentstring;
1870: }
1871:
1872: sub end_dd {
1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1874: my $currentstring = '';
1875: if ($target eq 'web') {
1876: $currentstring = $token->[2];
1877: } elsif ($target eq 'tex') {
1878: $Apache::londefdef::description[-1]->[-1].=
1879: &Apache::lonxml::endredirection().' \vskip 0mm ';
1880: $Apache::londefdef::DD[-1]--;
1881: }
1882: return $currentstring;
1883: }
1884:
1885: #-- <table> tag (end tag required)
1886: # <table> also ends any prior <p> that is not closed.
1887: # but, unless I allow <p>'s to nest, that's the
1888: # only way I could think of to allow <p> in
1889: # <tr> <th> bodies
1890: #
1891: #list of supported attributes: border,width,TeXwidth
1892: sub start_table {
1893: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1894: my $textwidth = '';
1895: my $currentstring = &end_p();
1896: if ($target eq 'web') {
1897: $currentstring .= $token->[4];
1898: } elsif ($target eq 'tex') {
1899: my $aa = {};
1900: push @Apache::londefdef::table, $aa;
1901: $Apache::londefdef::table[-1]{'row_number'} = -1;
1902: #maximum table's width (default coincides with text line length)
1903: if ($#Apache::londefdef::table==0) {
1904: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1905: $textwidth=~/(\d+\.?\d*)/;
1906: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1907: } else {
1908: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1909: #the maximum width of nested table is determined by LATeX width of parent cell
1910: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1911: } else {
1912: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1913: $textwidth=$Apache::londefdef::table[-2]{'width'};
1914: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1915: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1916: }
1917: }
1918: }
1919: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1920: if (not defined $TeXwidth) {
1921: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1922: if ($htmlwidth=~/%/) {
1923: $Apache::londefdef::table[-1]{'percent'}=1;
1924: $htmlwidth=~/(\d+)/;
1925: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1926: } else {
1927: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1928: }
1929: } elsif ($TeXwidth=~/%/) {
1930: $Apache::londefdef::table[-1]{'percent'}=1;
1931: $TeXwidth=~/(\d+)/;
1932: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1933: } else {
1934: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1935: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1936: }
1937: #table's border
1938: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1939: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1940: unless (defined $border) { $border = 0; }
1941: if ($border) {
1942: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1943: $Apache::londefdef::table[-1]{'vinc'} = '&';
1944: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1945: } else {
1946: $Apache::londefdef::table[-1]{'hinc'} = '';
1947: $Apache::londefdef::table[-1]{'vinc'} = '&';
1948: $Apache::londefdef::table[-1]{'vvinc'} = '';
1949: }
1950: if ($#Apache::londefdef::table==0) {
1951: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1952: }
1953: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1954: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1955: $Apache::londefdef::table[-1]{'objectlen'}=[];
1956: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1957: $Apache::londefdef::table[-1]{'maxlen'}=[];
1958: $Apache::londefdef::table[-1]{'minlen'}=[];
1959: $Apache::londefdef::table[-1]{'content'}=[];
1960: $Apache::londefdef::table[-1]{'align'}=[];
1961: $currentstring.='\keephidden{NEW TABLE ENTRY}';
1962: }
1963: return $currentstring;
1964: }
1965:
1966: sub end_table {
1967: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1968: my $currentstring = '';
1969: if ($target eq 'web') {
1970: $currentstring = $token->[2];
1971: } elsif ($target eq 'tex') {
1972: my $inmemory = '';
1973: my $output = '';
1974: my $WARNING='';
1975: #width of columns from TeXwidth attributes
1976: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1977: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1978: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1979: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1980: }
1981: }
1982: }
1983: #free space and number of empty columns
1984: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1985: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1986: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1987: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1988: $empty_columns++;
1989: } else {
1990: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1991: }
1992: }
1993: #boundaries for contents columns
1994: my @min_len=();#columns can not be narrower
1995: my @max_len=();#maximum length of column
1996: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1997: my ($localmin,$localmax)=(0,0);
1998: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1999: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2000: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2001: }
2002: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2003: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2004: }
2005: }
2006: push @min_len, $localmin;
2007: push @max_len, $localmax;
2008: }
2009: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2010: my $localmin=0,;
2011: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2012: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2013: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2014: }
2015: }
2016: if ($max_len[$jn]<$localmin) {
2017: $max_len[$jn]=$localmin;
2018: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2019: }#object size is bigger
2020: if ($min_len[$jn]<$localmin) {
2021: $min_len[$jn]=$localmin;
2022: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2023: }#object size is bigger
2024: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2025: $min_len[$jn]=0;
2026: $max_len[$jn]=0;
2027: }
2028: }
2029: #final adjustment of column width
2030: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2031: my @adjust=();
2032: #step 1. adjustment by maximum value
2033: my $space_neeeded=0;
2034: for (my $jn=0;$jn<=$#max_len;$jn++) {
2035: $space_neeeded=$space_neeeded+$max_len[$jn];
2036: }
2037: if ($space_neeeded<=$available_space) {
2038: for (my $jn=0;$jn<=$#max_len;$jn++) {
2039: if ($fwidth[$jn]==0) {
2040: $fwidth[$jn]=$max_len[$jn];
2041: }
2042: }
2043: } else {
2044: #step 2. adjustment by minimum value (estimation)
2045: $space_neeeded=0;
2046: for (my $jn=0;$jn<=$#min_len;$jn++) {
2047: $space_neeeded+=$min_len[$jn];
2048: }
2049: if ($space_neeeded>$available_space) {
2050: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2051: for (my $jn=0;$jn<=$#max_len;$jn++) {
2052: if ($fwidth[$jn]==0) {
2053: $fwidth[$jn]=$min_len[$jn];
2054: }
2055: }
2056: #check if we have objects which can be scaled
2057: my $how_many_to_scale=0;
2058: my @to_scale=();
2059: for (my $jn=0;$jn<=$#max_len;$jn++) {
2060: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2061: $how_many_to_scale++;
2062: push @to_scale, $jn;
2063: }
2064: }
2065: if ($how_many_to_scale>0) {
2066: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2067: foreach my $jn (@to_scale) {
2068: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2069: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2070: if ($1 ne '') {
2071: my $current_length=&recalc($1);
2072: $current_length=~/(\d+\.?\d*)/;
2073: $current_length=$current_length-$space_to_adjust;
2074: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2075: }
2076: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2077: if ($1 ne '') {
2078: my $current_length=$1;
2079: $current_length=$current_length-$space_to_adjust;
2080: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2081: }
2082: }
2083: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2084: }
2085: }
2086: } else {
2087: #step 3. adjustment over minimal + corrections
2088: my $enlarge_coef=$available_space/$space_neeeded;
2089: my $acsessive=0;
2090: for (my $jn=0;$jn<=$#min_len;$jn++) {
2091: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2092: if ($adjust[$jn]>$max_len[$jn]) {
2093: $fwidth[$jn]=$max_len[$jn];
2094: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2095: $adjust[$jn]=0;
2096: }
2097: }
2098: if ($acsessive>0) {
2099: #we have an excess of space and can redistribute it
2100: my $notempty_columns=0;
2101: for (my $jn=0;$jn<=$#min_len;$jn++) {
2102: if ($adjust[$jn]!=0) {
2103: $notempty_columns++;
2104: }
2105: }
2106: my $per_column=$acsessive/$notempty_columns;
2107: for (my $jn=0;$jn<=$#min_len;$jn++) {
2108: if ($adjust[$jn]!=0) {
2109: $adjust[$jn]+=$per_column;
2110: $fwidth[$jn]=$adjust[$jn];
2111: }
2112: }
2113: } else {
2114: for (my $jn=0;$jn<=$#min_len;$jn++) {
2115: $fwidth[$jn]=$adjust[$jn];
2116: }
2117: }
2118: }
2119: }
2120: #use all available width if it is defined in % or as TeXwidth
2121: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2122: my $current=0;
2123: for (my $i=0;$i<=$#fwidth;$i++) {
2124: $current+=$fwidth[$i];
2125: }
2126: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2127: for (my $i=0;$i<=$#fwidth;$i++) {
2128: $fwidth[$i]*=$coef;
2129: }
2130: }
2131: #removing of empty columns if allowed
2132: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2133: if ($permission eq 'yes') {
2134: my @cleaned_table=();
2135: my @cleaned_header=();
2136: my $colind=0;
2137: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2138: if ($fwidth[$jn]!=0) {
2139: #we need to copy column
2140: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2141: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2142: $cleaned_header[$colind]=$fwidth[$jn];
2143: }
2144: $colind++;
2145: }
2146: }
2147: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2148: @fwidth=@cleaned_header;
2149: }
2150: #construct header of the table
2151: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2152: for (my $in=0;$in<=$#fwidth;$in++) {
2153: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2154: }
2155: $header_of_table .= '}';
2156: #fill the table
2157: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2158: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2159: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2160: $output.='\vspace*{-6 mm}\begin{center}';
2161: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2162: $output.=' \hfill \llap{'
2163: }
2164: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2165: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2166: $output.='\end{center}\vspace*{-6 mm}';
2167: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2168: $output.='} ';
2169: }
2170: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2171: }
2172: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2173: }
2174: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2175: if ($#Apache::londefdef::table > 0) {
2176: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2177: pop @Apache::londefdef::table;
2178: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2179: } else {
2180: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2181: pop @Apache::londefdef::table;
2182: undef @Apache::londefdef::table;
2183: }
2184: }
2185: return $currentstring;
2186: }
2187:
2188: #-- <tr> tag (end tag optional)
2189: sub start_tr {
2190: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2191: my $currentstring = '';
2192: if ($target eq 'web') {
2193: $currentstring = $token->[4];
2194: } elsif ($target eq 'tex') {
2195: $Apache::londefdef::table[-1]{'row_number'}++;
2196: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2197: if ($alignchar ne '') {
2198: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2199: } else {
2200: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2201: }
2202: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2203: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2204: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2205: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2206: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2207: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2208: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2209: }
2210: return $currentstring;
2211: }
2212:
2213: sub end_tr {
2214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2215: my $currentstring = &end_p(); # Close any pending <p> in the row.
2216: if ($target eq 'web') {
2217: $currentstring .= $token->[2];
2218: } elsif ($target eq 'tex') {
2219: if ($Apache::londefdef::TD_redirection) {
2220: &end_td_tex($parstack,$parser,$safeeval);
2221: }
2222: }
2223: return $currentstring;
2224: }
2225:
2226: #-- <td> tag (end tag optional)
2227: sub start_td {
2228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2229: my $currentstring = '';
2230: if ($target eq 'web') {
2231: $currentstring = $token->[4];
2232: } elsif ($target eq 'tex') {
2233: $Apache::londefdef::TD_redirection = 1;
2234: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2235: }
2236: return $currentstring;
2237: }
2238:
2239: sub tag_check {
2240: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2241: my @ar=@$parstack;
2242: for (my $i=$#ar-1;$i>=0;$i--) {
2243: if (lc($$tagstack[$i]) eq $good_tag) {
2244: &start_td_tex($parstack,$parser,$safeeval);
2245: last;
2246: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2247: splice @ar, $i+1;
2248: &end_td_tex(\@ar,$parser,$safeeval);
2249: &start_td_tex($parstack,$parser,$safeeval);
2250: last;
2251: }
2252: }
2253: return '';
2254: }
2255:
2256: sub start_td_tex {
2257: my ($parstack,$parser,$safeeval) = @_;
2258: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2259: if ($alignchar eq '') {
2260: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2261: }
2262: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2263: $Apache::londefdef::table[-1]{'counter_columns'}++;
2264: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2265: if (defined $TeXwidth) {
2266: my $current_length=&recalc($TeXwidth);
2267: $current_length=~/(\d+\.?\d*)/;
2268: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2269: }
2270: &Apache::lonxml::startredirection();
2271: return '';
2272: }
2273:
2274: sub end_td_tex {
2275: my ($parstack,$parser,$safeeval) = @_;
2276: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2277: my $data=&Apache::lonxml::endredirection();
2278: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2279: if (defined $TeXwidth) {
2280: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2281: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2282: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2283: } else {
2284: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2285: my $garbage_data=$data;
2286: my $fwidth=0;
2287: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2288: my $current_length=&recalc($1);
2289: $current_length=~/(\d+\.?\d*)/;
2290: if ($fwidth<$1) {$fwidth=$1;}
2291: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2292: }
2293: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2294: my $current_length=$1;
2295: if ($fwidth<$current_length) {$fwidth=$current_length;}
2296: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2297: }
2298: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2299: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2300: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2301: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2302: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2303: my $garbage_data=$data;
2304: my $fwidth=0;
2305: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2306: my $current_length=&recalc($1);
2307: $current_length=~/(\d+\.?\d*)/;
2308: if ($fwidth<$1) {$fwidth=$1;}
2309: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2310: }
2311: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2312: my $current_length=&recalc($1);
2313: $current_length=~/(\d+\.?\d*)/;
2314: if ($fwidth<$1) {$fwidth=$1;}
2315: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2316: }
2317: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2318: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2319: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2320: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2321: $data=~s/\\\\\s*$//;
2322: } else {
2323: $data=~s/^\s+(\S.*)/$1/;
2324: $data=~s/(.*\S)\s+$/$1/;
2325: $data=~s/(\s)+/$1/;
2326: my ($current_length,$min_length)=(0,0);
2327: if ($data=~/\\vskip/) {
2328: my $newdata=$data;
2329: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2330: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2331: foreach my $elementdata (@newdata) {
2332: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2333: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2334: my @words=split(/ /,$elementdata);
2335: foreach my $word (@words) {
2336: my $lengthword=2.5*&LATEX_length($word);
2337: if ($min_length<$lengthword) {$min_length=$lengthword;}
2338: }
2339: }
2340: } else {
2341: $current_length=2.5*&LATEX_length($data);
2342: my @words=split(/ /,$data);
2343: foreach my $word (@words) {
2344: my $lengthword=2*&LATEX_length($word);
2345: if ($min_length<$lengthword) {$min_length=$lengthword;}
2346: }
2347: }
2348: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2349: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2350: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2351: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2352: }
2353: }
2354: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2355: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2356: }
2357: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2358: return'';
2359: }
2360:
2361: sub end_td {
2362: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2363: my $currentstring = '';
2364: if ($target eq 'web') {
2365: $currentstring = $token->[2];
2366: } elsif ($target eq 'tex') {
2367: $Apache::londefdef::TD_redirection =0;
2368: &end_td_tex($parstack,$parser,$safeeval);
2369: }
2370: return $currentstring;
2371: }
2372:
2373: #-- <th> tag (end tag optional)
2374: sub start_th {
2375: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2376: my $currentstring = '';
2377: if ($target eq 'web') {
2378: $currentstring = $token->[4];
2379: } elsif ($target eq 'tex') {
2380: $Apache::londefdef::TD_redirection = 1;
2381: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2382: }
2383: return $currentstring;
2384: }
2385:
2386: sub tagg_check {
2387: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2388: my @ar=@$parstack;
2389: for (my $i=$#ar-1;$i>=0;$i--) {
2390: if (lc($$tagstack[$i]) eq $good_tag) {
2391: &start_th_tex($parstack,$parser,$safeeval);
2392: last;
2393: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2394: splice @ar, $i+1;
2395: &end_th_tex(\@ar,$parser,$safeeval);
2396: &start_th_tex($parstack,$parser,$safeeval);
2397: last;
2398: }
2399: }
2400: return '';
2401: }
2402:
2403: sub start_th_tex {
2404: my ($parstack,$parser,$safeeval) = @_;
2405: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2406: if ($alignchar eq '') {
2407: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2408: }
2409: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2410: $Apache::londefdef::table[-1]{'counter_columns'}++;
2411: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2412: if (defined $TeXwidth) {
2413: my $current_length=&recalc($TeXwidth);
2414: $current_length=~/(\d+\.?\d*)/;
2415: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2416: }
2417: &Apache::lonxml::startredirection();
2418: return '';
2419: }
2420:
2421: sub end_th_tex {
2422: my ($parstack,$parser,$safeeval) = @_;
2423: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2424: my $data=&Apache::lonxml::endredirection();
2425: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2426: if (defined $TeXwidth) {
2427: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2428: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2429: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2430: } else {
2431: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2432: my $garbage_data=$data;
2433: my $fwidth=0;
2434: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2435: my $current_length=&recalc($1);
2436: $current_length=~/(\d+\.?\d*)/;
2437: if ($fwidth<$1) {$fwidth=$1;}
2438: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2439: }
2440: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2441: my $current_length=$1;
2442: if ($fwidth<$current_length) {$fwidth=$current_length;}
2443: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2444: }
2445: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2446: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2447: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2448: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2449: } else {
2450: $data=~s/^\s+(\S.*)/$1/;
2451: $data=~s/(.*\S)\s+$/$1/;
2452: $data=~s/(\s)+/$1/;
2453: my ($current_length,$min_length)=(0,0);
2454: if ($data=~/\\vskip/) {
2455: my $newdata=$data;
2456: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2457: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2458: foreach my $elementdata (@newdata) {
2459: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2460: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2461: my @words=split(/ /,$elementdata);
2462: foreach my $word (@words) {
2463: my $lengthword=2.5*&LATEX_length($word);
2464: if ($min_length<$lengthword) {$min_length=$lengthword;}
2465: }
2466: }
2467: } else {
2468: $current_length=2.5*&LATEX_length($data);
2469: my @words=split(/ /,$data);
2470: foreach my $word (@words) {
2471: my $lengthword=2*&LATEX_length($word);
2472: if ($min_length<$lengthword) {$min_length=$lengthword;}
2473: }
2474: }
2475: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2476: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2477: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2478: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2479: }
2480: }
2481: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2482: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2483: }
2484: #make data bold
2485: $data='\textbf{'.$data.'}';
2486: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2487: return'';
2488: }
2489:
2490: sub end_th {
2491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2492: my $currentstring = &end_p(); # Close any open <p> in the row.
2493: if ($target eq 'web') {
2494: $currentstring .= $token->[2];
2495: } elsif ($target eq 'tex') {
2496: $Apache::londefdef::TD_redirection =0;
2497: &end_th_tex($parstack,$parser,$safeeval);
2498: }
2499: return $currentstring;
2500: }
2501:
2502: #-- <img> tag (end tag forbidden)
2503: #
2504: # Render the <IMG> tag.
2505: # <IMG> has the following attributes (in addition to the
2506: # standard HTML ones:
2507: # TeXwrap - Governs how the tex target will try to wrap text around
2508: # horizontally aligned images.
2509: # TeXwidth - The width of the image when rendered for print (mm).
2510: # TeXheight - The height of the image when rendered for print (mm)
2511: # (Note there seems to also be support for this as a % of page size)
2512: #
2513: sub start_img {
2514: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2515: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2516: undef,1);
2517: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2518: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2519: return '';
2520: }
2521: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2522: my $currentstring = '';
2523: my $scaling = .3;
2524:
2525: # Render unto browsers that which are the browser's...
2526:
2527: if ($target eq 'web') {
2528: if ($env{'browser.imagesuppress'} ne 'on') {
2529: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2530: } else {
2531: my $alttag= &Apache::lonxml::get_param
2532: ('alt',$parstack,$safeeval,undef,1);
2533: unless ($alttag) {
2534: $alttag=&Apache::lonmeta::alttag
2535: ($Apache::lonxml::pwd[-1],$src);
2536: }
2537: $currentstring.='[IMAGE: '.$alttag.']';
2538: }
2539:
2540: # and render unto TeX that which is LaTeX
2541:
2542: } elsif ($target eq 'tex') {
2543: #
2544: # The alignment will require some superstructure to be put around
2545: # the \includegraphics stuff. At present we can only partially
2546: # simulate the alignments offered by html.
2547: #
2548: #
2549: my $align = lc(&Apache::lonxml::get_param('align',
2550: $parstack,
2551: $safeeval,
2552: undef,1));
2553: if(!$align) {
2554: $align = "bottom"; # This is html's default so it's ours too.
2555: }
2556: #
2557: &Apache::lonxml::debug("Alignemnt = $align");
2558: # LaTeX's image/text wrapping is really bad since it wants to
2559: # make figures float.
2560: # The user has the optional parameter (applicable only to l/r
2561: # alignment to use the picins/parpic directive to get wrapped text
2562: # this is also imperfect.. that's why we give them a choice...
2563: # so they can't yell at us for our choice.
2564: #
2565: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2566: $parstack,
2567: $safeeval,
2568: undef,0);
2569: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2570: if(!$latex_rendering) {
2571: $latex_rendering = "parbox";
2572: }
2573: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2574:
2575: #if original gif/jpg/png file exist do following:
2576: my $origsrc=$src;
2577: my ($path,$file) = &get_eps_image($src);
2578: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2579: &Apache::lonxml::debug("path = $path file = $file src = $src");
2580: if (-e $src) {
2581: &Apache::lonxml::debug("$src exists");
2582: my ($height_param,$width_param)=
2583: &image_size($origsrc,0.3,$parstack,$safeeval);
2584: my $destpath = $path;
2585: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2586: my $destfile = $file;
2587: $destfile =~ s/ /\_/g;
2588: my $size;
2589: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2590: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2591: $size='['.$size;
2592: $size=~s/,$/]/;
2593: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2594: .'\includegraphics'.$size.'{'.$destfile.'} ';
2595:
2596: # If there's an alignment specification we need to honor it here.
2597: # For the horizontal alignments, we will also honor the
2598: # value of the latex specfication. The default is parbox,
2599: # and that's used for illegal values too.
2600: #
2601: # Even though we set a default alignment value, the user
2602: # could have given us an illegal value. In that case we
2603: # just use the default alignment of bottom..
2604: if ($align eq "top") {
2605: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2606: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2607: my $offset = $height_param/2;
2608: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2609: } elsif ($align eq "left") {
2610: if ($latex_rendering eq "parpic") {
2611: $currentstring = '\parpic[l]{'.$currentstring.'}';
2612: } else { # parbox rendering
2613: $currentstring = "\\strut\\newline\n".
2614: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2615: }
2616: } elsif ($align eq "right") {
2617: if ($latex_rendering eq "parpic") {
2618: $currentstring = '\parpic[r]{'.$currentstring.'}';
2619: } else { # parbox rendering.
2620: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2621: .$currentstring.'\end{flushright}} \newline'."\n";
2622: }
2623: } else { # Bottom is also default.
2624: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2625: }
2626: } else {
2627: &Apache::lonxml::debug("$src does not exist");
2628: #original image file doesn't exist so check the alt attribute
2629: my $alt =
2630: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2631: unless ($alt) {
2632: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2633: }
2634:
2635: if ($alt) { $currentstring .= ' '.$alt.' '; }
2636: }
2637:
2638: # And here's where the semi-quote breaks down: allow the user
2639: # to edit the beast as well by rendering the problem for edit:
2640: } elsif ($target eq 'edit') {
2641: $currentstring .=&Apache::edit::tag_start($target,$token);
2642: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2643: &Apache::edit::browse('src',undef,'alt').' '.
2644: &Apache::edit::search('src',undef,'alt').'<br />';
2645: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2646: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2647: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2648: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2649: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2650: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2651: ['','bottom','middle','top','left','right'],$token,5);
2652: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2653: ['', 'parbox', 'parpic'], $token, 2);
2654: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2655: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2656: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2657: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2658: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2659:
2660:
2661: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2662: if ($width) { $currentstring.=' width="'.$width.'" '; }
2663: if ($height) { $currentstring.=' height="'.$height.'" '; }
2664: $currentstring .= ' />';
2665: } elsif ($target eq 'modified') {
2666: my ($osrc,$owidth,$oheight)=
2667: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2668: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2669: $safeeval,'src','alt','align',
2670: 'TeXwidth','TeXheight', 'TeXwrap',
2671: 'width','height');
2672: my ($nsrc,$nwidth,$nheight)=
2673: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2674: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2675: &image_replication($loc);
2676: my ($iwidth,$iheight);
2677: if (-e $loc) {
2678: my $image = Image::Magick->new;
2679: $image->Read($loc);
2680: ($iwidth, $iheight) = ($image->Get('width'),
2681: $image->Get('height'));
2682: }
2683: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2684: # changed image or no size specified,
2685: # if they didn't explicitly change the
2686: # width or height use the ones from the image
2687: if ($iwidth && $iheight) {
2688: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2689: $token->[2]{'width'} = $iwidth;$ctag=1;
2690: }
2691: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2692: $token->[2]{'height'}=$iheight;$ctag=1;
2693: }
2694: }
2695: }
2696: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2697: # if we don't have a width or height
2698: if ($iwidth && $cwidth && !$cheight) {
2699: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2700: }
2701: if ($iheight && $cheight && !$cwidth) {
2702: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2703: }
2704: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2705: }
2706:
2707: return $currentstring;
2708: }
2709:
2710: sub end_img {
2711: my ($target,$token) = @_;
2712: my $currentstring = '';
2713: if ($target eq 'web') {
2714: $currentstring = $token->[2];
2715: } elsif ($target eq 'tex') {
2716: $currentstring = '';
2717: }
2718: return $currentstring;
2719: }
2720:
2721: #-- <applet> tag (end tag required)
2722: sub start_applet {
2723: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2724:
2725: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2726: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2727:
2728: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2729: undef,1);
2730: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2731:
2732: my $currentstring = '';
2733: if ($target eq 'web') {
2734: if ($env{'browser.appletsuppress'} ne 'on') {
2735: $currentstring = &Apache::lonenc::encrypt_ref($token,
2736: {'code'=>$code,
2737: 'archive'=>$archive}
2738: );
2739: } else {
2740: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2741: $safeeval,undef,1);
2742: unless ($alttag) {
2743: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2744: $code);
2745: }
2746: $currentstring='[APPLET: '.$alttag.']';
2747: }
2748: } elsif ($target eq 'tex') {
2749: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2750: $safeeval,undef,1);
2751: unless ($alttag) {
2752: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2753: undef,1);
2754: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2755: $code);
2756: }
2757: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2758: '.}\end{center}';
2759: }
2760: return $currentstring;
2761: }
2762:
2763: sub end_applet {
2764: my ($target,$token) = @_;
2765: my $currentstring = '';
2766: if ($target eq 'web') {
2767: $currentstring = $token->[2];
2768: } elsif ($target eq 'tex') {
2769: }
2770: return $currentstring;
2771: }
2772:
2773: #-- <embed> tag (end tag optional/required)
2774: sub start_embed {
2775: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2776: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2777: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2778: my $currentstring = '';
2779: if ($target eq 'web') {
2780: if ($env{'browser.embedsuppress'} ne 'on') {
2781: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2782: } else {
2783: my $alttag=&Apache::lonxml::get_param
2784: ('alt',$parstack,$safeeval,undef,1);
2785: unless ($alttag) {
2786: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2787: }
2788: $currentstring='[EMBED: '.$alttag.']';
2789: }
2790: } elsif ($target eq 'tex') {
2791: }
2792: return $currentstring;
2793: }
2794:
2795: sub end_embed {
2796: my ($target,$token) = @_;
2797: my $currentstring = '';
2798: if ($target eq 'web') {
2799: $currentstring = $token->[2];
2800: } elsif ($target eq 'tex') {
2801: }
2802: return $currentstring;
2803: }
2804:
2805: #-- <param> tag (end tag forbidden)
2806: sub start_param {
2807: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2808: if (&Apache::lonxml::get_param
2809: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2810: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2811: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2812: }
2813: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2814: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2815: my $currentstring = '';
2816: if ($target eq 'web') {
2817: my %toconvert;
2818: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2819: if ($src) { $toconvert{'src'}= $src; }
2820: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2821: undef,1);
2822: if ($name=~/^cabbase$/i) {
2823: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2824: $safeeval,undef,1);
2825: }
2826: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2827: } elsif ($target eq 'tex') {
2828: }
2829: return $currentstring;
2830: }
2831:
2832: sub end_param {
2833: my ($target,$token) = @_;
2834: my $currentstring = '';
2835: if ($target eq 'web') {
2836: $currentstring = $token->[2];
2837: } elsif ($target eq 'tex') {
2838: }
2839: return $currentstring;
2840: }
2841:
2842: #-- <allow> tag
2843: sub start_allow {
2844: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2845: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2846: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2847: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2848: &Apache::lonnet::clutter($src);
2849: if ($target eq 'tex') { &image_replication($src); }
2850: my $result;
2851: if ($target eq 'edit') {
2852: $result .=&Apache::edit::tag_start($target,$token);
2853: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2854: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2855: } elsif ($target eq 'modified') {
2856: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2857: $safeeval,'src');
2858: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2859: }
2860: return $result;
2861: }
2862:
2863: sub end_allow {
2864: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2865: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2866: return '';
2867: }
2868:
2869: #-- Frames (end tag required)
2870: #-- <frameset>
2871: sub start_frameset {
2872: my ($target,$token) = @_;
2873: my $currentstring = ''; # Close any pending para.
2874: if ($target eq 'web') {
2875: if (!$Apache::lonxml::registered &&
2876: $env{'request.state'} eq 'published') {
2877: $currentstring.='<head>'.
2878: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2879: }
2880: my $onLoad='';
2881: foreach my $key (keys(%{$token->[2]})) {
2882: if ($key =~ /^onload$/i) {
2883: $onLoad.=$token->[2]->{$key}.';';
2884: delete($token->[2]->{$key});
2885: }
2886: }
2887: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2888: my $onUnload='';
2889: foreach my $key (keys(%{$token->[2]})) {
2890: if ($key =~ /^onunload$/i) {
2891: $onUnload.=$token->[2]->{$key}.';';
2892: delete($token->[2]->{$key});
2893: }
2894: }
2895: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2896: ';'.$onUnload;
2897:
2898: $currentstring .= '<'.$token->[1];
2899: foreach (keys %{$token->[2]}) {
2900: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2901: }
2902: $currentstring.='>';
2903: }
2904: return $currentstring;
2905: }
2906:
2907: sub end_frameset {
2908: my ($target,$token) = @_;
2909: my $currentstring = '';
2910: if ($target eq 'web') {
2911: $currentstring = $token->[2];
2912: }
2913: return $currentstring;
2914: }
2915:
2916: #-- <xmp> (end tag required)
2917: sub start_xmp {
2918: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: $currentstring .= $token->[4];
2922: } elsif ($target eq 'tex') {
2923: $currentstring .= '\begin{verbatim}';
2924: }
2925: return $currentstring;
2926: }
2927:
2928: sub end_xmp {
2929: my ($target,$token) = @_;
2930: my $currentstring = '';
2931: if ($target eq 'web') {
2932: $currentstring .= $token->[2];
2933: } elsif ($target eq 'tex') {
2934: $currentstring .= '\end{verbatim}';
2935: }
2936: return $currentstring;
2937: }
2938:
2939: #-- <pre> (end tag required)
2940: sub start_pre {
2941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2942: my $currentstring = &end_p(); # close off pending <p>
2943: if ($target eq 'web') {
2944: $currentstring .= $token->[4];
2945: } elsif ($target eq 'tex') {
2946: $currentstring .= '\begin{verbatim}';
2947: }
2948: return $currentstring;
2949: }
2950:
2951: sub end_pre {
2952: my ($target,$token) = @_;
2953: my $currentstring = '';
2954: if ($target eq 'web') {
2955: $currentstring .= $token->[2];
2956: } elsif ($target eq 'tex') {
2957: $currentstring .= '\end{verbatim}';
2958: }
2959: return $currentstring;
2960: }
2961:
2962: #-- <insert>
2963: sub start_insert {
2964: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2965: my $currentstring = '';
2966: if ($target eq 'web') {
2967: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2968: $currentstring .= '<b>'.$display.'</b>';;
2969: }
2970: return $currentstring;
2971: }
2972:
2973: sub end_insert {
2974: my ($target,$token) = @_;
2975: my $currentstring = '';
2976: if ($target eq 'web') {
2977: $currentstring .= '';
2978: }
2979: return $currentstring;
2980: }
2981:
2982: #-- <externallink>
2983: sub start_externallink {
2984: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2985: my $currentstring = '';
2986: if ($target eq 'web') {
2987: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2988: $currentstring .= '<b>'.$display.'</b>';;
2989: }
2990: return $currentstring;
2991: }
2992:
2993: sub end_externallink {
2994: my ($target,$token) = @_;
2995: my $currentstring = '';
2996: if ($target eq 'web') {
2997: $currentstring .= '';
2998: }
2999: return $currentstring;
3000: }
3001:
3002: #-- <blankspace heigth="">
3003: sub start_blankspace {
3004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3005: my $currentstring = &end_p(); # closes off any unclosed <p>
3006: if ($target eq 'tex') {
3007: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3008: $currentstring .= '\vskip '.$howmuch.' ';
3009: }
3010: return $currentstring;
3011: }
3012:
3013: sub end_blankspace {
3014: my ($target,$token) = @_;
3015: my $currentstring = '';
3016: if ($target eq 'tex') {
3017: $currentstring .= '';
3018: }
3019: return $currentstring;
3020: }
3021:
3022: #-- <abbr> tag (end tag required)
3023: sub start_abbr {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[4];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: sub end_abbr {
3033: my ($target,$token) = @_;
3034: my $currentstring = '';
3035: if ($target eq 'web') {
3036: $currentstring = $token->[2];
3037: }
3038: return $currentstring;
3039: }
3040:
3041: #-- <acronym> tag (end tag required)
3042: sub start_acronym {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[4];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: sub end_acronym {
3052: my ($target,$token) = @_;
3053: my $currentstring = '';
3054: if ($target eq 'web') {
3055: $currentstring = $token->[2];
3056: }
3057: return $currentstring;
3058: }
3059:
3060: #-- <area> tag (end tag forbidden)
3061: sub start_area {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[4];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: sub end_area {
3071: my ($target,$token) = @_;
3072: my $currentstring = '';
3073: if ($target eq 'web') {
3074: $currentstring = $token->[2];
3075: }
3076: return $currentstring;
3077: }
3078:
3079: #-- <base> tag (end tag forbidden)
3080: sub start_base {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[4];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: sub end_base {
3090: my ($target,$token) = @_;
3091: my $currentstring = '';
3092: if ($target eq 'web') {
3093: $currentstring = $token->[2];
3094: }
3095: return $currentstring;
3096: }
3097:
3098: #-- <bdo> tag (end tag required)
3099: sub start_bdo {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[4];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: sub end_bdo {
3109: my ($target,$token) = @_;
3110: my $currentstring = '';
3111: if ($target eq 'web') {
3112: $currentstring = $token->[2];
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <bgsound> tag (end tag optional)
3118: sub start_bgsound {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[4];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: sub end_bgsound {
3128: my ($target,$token) = @_;
3129: my $currentstring = '';
3130: if ($target eq 'web') {
3131: $currentstring = $token->[2];
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <blink> tag (end tag required)
3137: sub start_blink {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[4];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: sub end_blink {
3147: my ($target,$token) = @_;
3148: my $currentstring = '';
3149: if ($target eq 'web') {
3150: $currentstring = $token->[2];
3151: }
3152: return $currentstring;
3153: }
3154:
3155: #-- <blockquote> tag (end tag required)
3156: sub start_blockquote {
3157: my ($target,$token) = @_;
3158: my $currentstring = &end_p(); # Close any unclosed <p>
3159: if ($target eq 'web') {
3160: $currentstring .= $token->[4];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: sub end_blockquote {
3166: my ($target,$token) = @_;
3167: my $currentstring = '';
3168: if ($target eq 'web') {
3169: $currentstring = $token->[2];
3170: }
3171: return $currentstring;
3172: }
3173:
3174: #-- <button> tag (end tag required)
3175: sub start_button {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[4];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: sub end_button {
3185: my ($target,$token) = @_;
3186: my $currentstring = '';
3187: if ($target eq 'web') {
3188: $currentstring = $token->[2];
3189: }
3190: return $currentstring;
3191: }
3192:
3193: #-- <caption> tag (end tag required)
3194: sub start_caption {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[4];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_caption {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: $currentstring = $token->[2];
3208: }
3209: return $currentstring;
3210: }
3211:
3212: #-- <col> tag (end tag forbdden)
3213: sub start_col {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[4];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: sub end_col {
3223: my ($target,$token) = @_;
3224: my $currentstring = '';
3225: if ($target eq 'web') {
3226: $currentstring = $token->[2];
3227: }
3228: return $currentstring;
3229: }
3230:
3231: #-- <colgroup> tag (end tag optional)
3232: sub start_colgroup {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[4];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: sub end_colgroup {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web') {
3245: $currentstring = $token->[2];
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <del> tag (end tag required)
3251: sub start_del {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[4];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: sub end_del {
3261: my ($target,$token) = @_;
3262: my $currentstring = '';
3263: if ($target eq 'web') {
3264: $currentstring = $token->[2];
3265: }
3266: return $currentstring;
3267: }
3268:
3269: #-- <fieldset> tag (end tag required)
3270: sub start_fieldset {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[4];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: sub end_fieldset {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web') {
3283: $currentstring = $token->[2];
3284: }
3285: return $currentstring;
3286: }
3287:
3288: #-- <frame> tag (end tag forbidden)
3289: sub start_frame {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[4];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: sub end_frame {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web') {
3302: $currentstring = $token->[2];
3303: }
3304: return $currentstring;
3305: }
3306:
3307: #-- <iframe> tag (end tag required)
3308: sub start_iframe {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[4];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: sub end_iframe {
3318: my ($target,$token) = @_;
3319: my $currentstring = '';
3320: if ($target eq 'web') {
3321: $currentstring = $token->[2];
3322: }
3323: return $currentstring;
3324: }
3325:
3326: #-- <ins> tag (end tag required)
3327: sub start_ins {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[4];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: sub end_ins {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web') {
3340: $currentstring = $token->[2];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: #-- <isindex> tag (end tag forbidden)
3346: sub start_isindex {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[4];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: sub end_isindex {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web') {
3359: $currentstring = $token->[2];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: #-- <keygen> tag (end tag forbidden)
3365: sub start_keygen {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[4];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: sub end_keygen {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web') {
3378: $currentstring = $token->[2];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: #-- <label> tag
3384: sub start_label {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[4];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: sub end_label {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web') {
3397: $currentstring = $token->[2];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: #-- <layer> tag (end tag required)
3403: sub start_layer {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[4];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: sub end_layer {
3413: my ($target,$token) = @_;
3414: my $currentstring = '';
3415: if ($target eq 'web') {
3416: $currentstring = $token->[2];
3417: }
3418: return $currentstring;
3419: }
3420:
3421: #-- <legend> tag (end tag required)
3422: sub start_legend {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[4];
3427: }
3428: return $currentstring;
3429: }
3430:
3431: sub end_legend {
3432: my ($target,$token) = @_;
3433: my $currentstring = '';
3434: if ($target eq 'web') {
3435: $currentstring = $token->[2];
3436: }
3437: return $currentstring;
3438: }
3439:
3440: #-- <link> tag (end tag forbidden)
3441: sub start_link {
3442: my ($target,$token) = @_;
3443: my $currentstring = '';
3444: if ($target eq 'web') {
3445: $currentstring = $token->[4];
3446: }
3447: return $currentstring;
3448: }
3449:
3450: sub end_link {
3451: my ($target,$token) = @_;
3452: my $currentstring = '';
3453: if ($target eq 'web') {
3454: $currentstring = $token->[2];
3455: }
3456: return $currentstring;
3457: }
3458:
3459: #-- <marquee> tag (end tag optional)
3460: sub start_marquee {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web') {
3464: $currentstring = $token->[4];
3465: }
3466: return $currentstring;
3467: }
3468:
3469: sub end_marquee {
3470: my ($target,$token) = @_;
3471: my $currentstring = '';
3472: if ($target eq 'web') {
3473: $currentstring = $token->[2];
3474: }
3475: return $currentstring;
3476: }
3477:
3478: #-- <multicol> tag (end tag required)
3479: sub start_multicol {
3480: my ($target,$token) = @_;
3481: my $currentstring = &end_p(); # Close any pending <p>
3482: if ($target eq 'web') {
3483: $currentstring .= $token->[4];
3484: }
3485: return $currentstring;
3486: }
3487:
3488: sub end_multicol {
3489: my ($target,$token) = @_;
3490: my $currentstring = '';
3491: if ($target eq 'web') {
3492: $currentstring = $token->[2];
3493: }
3494: return $currentstring;
3495: }
3496:
3497: #-- <nobr> tag (end tag required)
3498: sub start_nobr {
3499: my ($target,$token) = @_;
3500: my $currentstring = '';
3501: if ($target eq 'web') {
3502: $currentstring = $token->[4];
3503: } elsif ($target eq 'tex') {
3504: $currentstring='\mbox{';
3505: }
3506: return $currentstring;
3507: }
3508:
3509: sub end_nobr {
3510: my ($target,$token) = @_;
3511: my $currentstring = '';
3512: if ($target eq 'web') {
3513: $currentstring = $token->[2];
3514: } elsif ($target eq 'tex') {
3515: $currentstring='}';
3516: }
3517: return $currentstring;
3518: }
3519:
3520: #-- <noembed> tag (end tag required)
3521: sub start_noembed {
3522: my ($target,$token) = @_;
3523: my $currentstring = '';
3524: if ($target eq 'web') {
3525: $currentstring = $token->[4];
3526: }
3527: return $currentstring;
3528: }
3529:
3530: sub end_noembed {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web') {
3534: $currentstring = $token->[2];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: #-- <noframes> tag (end tag required)
3540: sub start_noframes {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web') {
3544: $currentstring = $token->[4];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: sub end_noframes {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web') {
3553: $currentstring = $token->[2];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: #-- <nolayer> tag (end tag required)
3559: sub start_nolayer {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web') {
3563: $currentstring = $token->[4];
3564: }
3565: return $currentstring;
3566: }
3567:
3568: sub end_nolayer {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web') {
3572: $currentstring = $token->[2];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: #-- <noscript> tag (end tag required)
3578: sub start_noscript {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web') {
3582: $currentstring = $token->[4];
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_noscript {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web') {
3591: $currentstring = $token->[2];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <object> tag (end tag required)
3597: sub start_object {
3598: my ($target,$token) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web') {
3601: $currentstring = $token->[4];
3602: }
3603: return $currentstring;
3604: }
3605:
3606: sub end_object {
3607: my ($target,$token) = @_;
3608: my $currentstring = '';
3609: if ($target eq 'web') {
3610: $currentstring = $token->[2];
3611: }
3612: return $currentstring;
3613: }
3614:
3615: #-- <optgroup> tag (end tag required)
3616: sub start_optgroup {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web') {
3620: $currentstring = $token->[4];
3621: }
3622: return $currentstring;
3623: }
3624:
3625: sub end_optgroup {
3626: my ($target,$token) = @_;
3627: my $currentstring = '';
3628: if ($target eq 'web') {
3629: $currentstring = $token->[2];
3630: }
3631: return $currentstring;
3632: }
3633:
3634: #-- <samp> tag (end tag required)
3635: sub start_samp {
3636: my ($target,$token) = @_;
3637: my $currentstring = '';
3638: if ($target eq 'web') {
3639: $currentstring = $token->[4];
3640: } elsif ($target eq 'tex') {
3641: $currentstring='\texttt{';
3642: }
3643: return $currentstring;
3644: }
3645:
3646: sub end_samp {
3647: my ($target,$token) = @_;
3648: my $currentstring = '';
3649: if ($target eq 'web') {
3650: $currentstring = $token->[2];
3651: } elsif ($target eq 'tex') {
3652: $currentstring='}';
3653: }
3654: return $currentstring;
3655: }
3656:
3657: #-- <server> tag
3658: sub start_server {
3659: my ($target,$token) = @_;
3660: my $currentstring = '';
3661: if ($target eq 'web') {
3662: $currentstring = $token->[4];
3663: }
3664: return $currentstring;
3665: }
3666:
3667: sub end_server {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web') {
3671: $currentstring = $token->[2];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: #-- <spacer> tag (end tag forbidden)
3677: sub start_spacer {
3678: my ($target,$token) = @_;
3679: my $currentstring = &end_p(); # Close off any open <p> tag.
3680: if ($target eq 'web') {
3681: $currentstring .= $token->[4];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: sub end_spacer {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web') {
3690: $currentstring = $token->[2];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: #-- <span> tag (end tag required)
3696: sub start_span {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web') {
3700: $currentstring = $token->[4];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: sub end_span {
3706: my ($target,$token) = @_;
3707: my $currentstring = '';
3708: if ($target eq 'web') {
3709: $currentstring = $token->[2];
3710: }
3711: return $currentstring;
3712: }
3713:
3714: #-- <tbody> tag (end tag optional)
3715: sub start_tbody {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web') {
3719: $currentstring = $token->[4];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: sub end_tbody {
3725: my ($target,$token) = @_;
3726: my $currentstring = '';
3727: if ($target eq 'web') {
3728: $currentstring = $token->[2];
3729: }
3730: return $currentstring;
3731: }
3732:
3733: #-- <tfoot> tag (end tag optional)
3734: sub start_tfoot {
3735: my ($target,$token) = @_;
3736: my $currentstring = '';
3737: if ($target eq 'web') {
3738: $currentstring = $token->[4];
3739: }
3740: return $currentstring;
3741: }
3742:
3743: sub end_tfoot {
3744: my ($target,$token) = @_;
3745: my $currentstring = '';
3746: if ($target eq 'web') {
3747: $currentstring = $token->[2];
3748: }
3749: return $currentstring;
3750: }
3751:
3752: #-- <thead> tag (end tag optional)
3753: sub start_thead {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web') {
3757: $currentstring = $token->[4];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: sub end_thead {
3763: my ($target,$token) = @_;
3764: my $currentstring = '';
3765: if ($target eq 'web') {
3766: $currentstring = $token->[2];
3767: }
3768: return $currentstring;
3769: }
3770:
3771: #-- <var> tag
3772: sub start_var {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web') {
3776: $currentstring = $token->[4];
3777: } elsif ($target eq 'tex') {
3778: $currentstring = '\textit{';
3779: }
3780: return $currentstring;
3781: }
3782:
3783: sub end_var {
3784: my ($target,$token) = @_;
3785: my $currentstring = '';
3786: if ($target eq 'web') {
3787: $currentstring = $token->[2];
3788: } elsif ($target eq 'tex') {
3789: $currentstring = '}';
3790: }
3791: return $currentstring;
3792: }
3793:
3794: #-- <wbr> tag (end tag forbidden)
3795: sub start_wbr {
3796: my ($target,$token) = @_;
3797: my $currentstring = '';
3798: if ($target eq 'web') {
3799: $currentstring = $token->[4];
3800: }
3801: return $currentstring;
3802: }
3803:
3804: sub end_wbr {
3805: my ($target,$token) = @_;
3806: my $currentstring = '';
3807: if ($target eq 'web') {
3808: $currentstring = $token->[2];
3809: }
3810: return $currentstring;
3811: }
3812:
3813: #-- <hideweboutput> tag
3814: sub start_hideweboutput {
3815: my ($target,$token) = @_;
3816: if ($target eq 'web') {
3817: &Apache::lonxml::startredirection();
3818: }
3819: return '';
3820: }
3821:
3822: sub end_hideweboutput {
3823: my ($target,$token) = @_;
3824: my $currentstring = '';
3825: if ($target eq 'web') {
3826: $currentstring = &Apache::lonxml::endredirection();
3827: }
3828: return '';
3829: }
3830:
3831:
3832: sub image_replication {
3833: my $src = shift;
3834: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3835: #replicates eps or ps
3836: my $epssrc = my $pssrc = $src;
3837: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3838: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3839: if (not -e $epssrc && not -e $pssrc) {
3840: my $result=&Apache::lonnet::repcopy($epssrc);
3841: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
3842: }
3843: return '';
3844: }
3845: #
3846: # Get correct sizing parameter for an image given
3847: # it's initial ht. and wid. This allows sizing of
3848: # images that are generated on-the-fly (e.g. gnuplot)
3849: # as well as serving as a utility for image_size.
3850: #
3851: # Parameter:
3852: # height_param
3853: # width_param - Initial picture dimensions.
3854: # scaling - A scale factor.
3855: # parstack, - the current stack of tag attributes
3856: # from the xml parser
3857: # safeeval, - pointer to the safespace
3858: # depth, - from what level in the stack to look for attributes
3859: # (assumes -1 if unspecified)
3860: # cis - look for attrubutes case insensitively
3861: # (assumes false)
3862: #
3863: # Returns:
3864: # height, width - new dimensions.
3865: #
3866: sub resize_image {
3867: my ($height_param, $width_param, $scaling,
3868: $parstack, $safeeval, $depth, $cis) = @_;
3869:
3870: # First apply the scaling...
3871:
3872: $height_param = $height_param * $scaling;
3873: $width_param = $width_param * $scaling;
3874:
3875: #do we have any specified LaTeX size of the picture?
3876: my $toget='TeXwidth';
3877: if ($cis) {
3878: $toget=lc($toget);
3879: }
3880: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3881: $safeeval,$depth,$cis);
3882: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3883: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3884: $safeeval,$depth,$cis);
3885: #do we have any specified web size of the picture?
3886: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3887: $depth,1);
3888: if ($TeXwidth) {
3889: my $old_width_param=$width_param;
3890: if ($TeXwidth=~/(\d+)\s*\%/) {
3891: $width_param = $1*$env{'form.textwidth'}/100;
3892: } else {
3893: $width_param = $TeXwidth;
3894: }
3895: if ($TeXheight) {
3896: $height_param = $TeXheight;
3897: } elsif ($old_width_param) {
3898: $height_param=$TeXwidth/$old_width_param*$height_param;
3899: }
3900: } elsif ($TeXheight) {
3901: $height_param = $TeXheight;
3902: if ($height_param) {
3903: $width_param = $TeXheight/$height_param*$width_param;
3904: }
3905: } elsif ($width) {
3906: my $old_width_param=$width_param;
3907: $width_param = $width*$scaling;
3908: if ($old_width_param) {
3909: $height_param=$width_param/$old_width_param*$height_param;
3910: }
3911: }
3912: if ($width_param > $env{'form.textwidth'}) {
3913: my $old_width_param=$width_param;
3914: $width_param =0.95*$env{'form.textwidth'};
3915: if ($old_width_param) {
3916: $height_param=$width_param/$old_width_param*$height_param;
3917: }
3918: }
3919:
3920: return ($height_param, $width_param);
3921: }
3922:
3923: sub image_size {
3924: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3925:
3926: #size of image from gif/jpg/jpeg/png
3927: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3928: if (-e $ressrc) {
3929: $src = $ressrc;
3930: }
3931: my $image = Image::Magick->new;
3932: my $current_figure = $image->Read($src);
3933: my $width_param = $image->Get('width');
3934: my $height_param = $image->Get('height');
3935: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
3936: undef($image);
3937:
3938: ($height_param, $width_param) = &resize_image($height_param, $width_param,
3939: $scaling, $parstack, $safeeval,
3940: $depth, $cis);
3941:
3942: return ($height_param, $width_param);
3943: }
3944:
3945: sub image_width {
3946: my ($height, $width) = &image_size(@_);
3947: return $width;
3948: }
3949: # Not yet 100% sure this is correct in all circumstances..
3950: # due to my uncertainty about mods to image_size.
3951: #
3952: sub image_height {
3953: my ($height, $width) = &image_size(@_);
3954: return $height;
3955: }
3956:
3957: sub get_eps_image {
3958: my ($src)=@_;
3959: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
3960: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
3961: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3962: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3963: &Apache::lonxml::debug("Filelocation gives: $src");
3964: if (! -e $src) {
3965: &Apache::lonxml::debug("$src does not exist");
3966: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
3967: &Apache::lonxml::debug("Repcopy of $src failed (1)");
3968: #if replication failed try to find ps file
3969: $src=~s/\.eps$/\.ps/;
3970: &Apache::lonxml::debug("Now looking for $src");
3971: #if no ps file try to replicate it.
3972: my $didrepcopy = &Apache::lonnet::repcopy($src);
3973: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
3974: if ( (not -e $src) ||
3975: ($didrepcopy ne 'ok')) {
3976: &Apache::lonxml::debug("Failed to find or replicate $src");
3977:
3978: #if replication failed try to produce eps file dynamically
3979: $src=~s/\.ps$/\.eps/;
3980: my $temp_file;
3981: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
3982: my $newsrc=$orig_src;
3983: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
3984: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
3985: print FILE "$newsrc\n";
3986: close FILE;
3987: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
3988: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
3989: }
3990: }
3991: }
3992: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
3993: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
3994: return ($path.'/',$file);
3995: }
3996:
3997: sub eps_generation {
3998: my ($src,$file,$width_param) = @_;
3999: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4000: my $temp_file = Apache::File->new('>>'.$filename);
4001: print $temp_file "$src\n";
4002: my $newsrc = $src;
4003: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4004: $newsrc=~s/\/home\/httpd\/html\/res//;
4005: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4006: $newsrc=~s/\/\.\//\//;
4007: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4008: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4009: $newsrc=~s/\/home\/httpd\/lonUsers//;
4010: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4011: }
4012: if ($newsrc=~/\/userfiles\//) {
4013: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4014: } else {
4015: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4016: }
4017: }
4018:
4019: sub file_path {
4020: my $src=shift;
4021: my ($file,$path);
4022: if ($src =~ m!(.*)/([^/]*)$!) {
4023: $file = $2;
4024: $path = $1.'/';
4025: }
4026: return $file,$path;
4027: }
4028:
4029: sub recalc {
4030: my $argument = shift;
4031: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4032: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4033: my $value=$1;
4034: my $units=$2;
4035: if ($units eq 'cm') {
4036: $value*=10;
4037: } elsif ($units eq 'in') {
4038: $value*=25.4;
4039: } elsif ($units eq 'pc') {
4040: $value*=(25.4*12/72.27);
4041: } elsif ($units eq 'pt') {
4042: $value*=(25.4/72.27);
4043: }
4044: return $value.' mm';
4045: }
4046:
4047: sub LATEX_length {
4048: my $garbage=shift;
4049: $garbage=~s/^\s+$//;
4050: $garbage=~s/^\s+(\S.*)/$1/;#space before
4051: $garbage=~s/(.*\S)\s+$/$1/;#space after
4052: $garbage=~s/(\s)+/$1/;#only one space
4053: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4054: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4055: $garbage=~s/([^\\])\$/$1/g;#$
4056: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4057: $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;
4058: $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;
4059: $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;
4060: $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;
4061: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
4062: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
4063: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4064: #remove some other LaTeX command
4065: $garbage=~s|\\(\w+)\\|\\|g;
4066: $garbage=~s|\\(\w+)(\s*)|$2|g;
4067: $garbage=~s|\+|11|g;
4068: my $value=length($garbage);
4069: return $value;
4070: }
4071:
4072:
4073:
4074:
4075: 1;
4076: __END__
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