1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.275 2005/05/23 09:49:36 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,$$parstack[-1]);
91: #&Apache::lonxml::debug("M is evaulated to:$inside:");
92: }
93: $currentstring = &Apache::lontexconvert::converted(\$inside);
94: if ($Apache::lontexconvert::errorstring) {
95: &Apache::lonxml::warning("tth error: ".
96: $Apache::lontexconvert::errorstring);
97: $Apache::lontexconvert::errorstring='';
98: }
99: #&Apache::lonxml::debug("M is ends with:$currentstring:");
100: $Apache::lonxml::post_evaluate=0;
101: } elsif ($target eq 'tex') {
102: $currentstring = $inside;
103: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
104: if ($eval eq 'on') {
105: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
106: }
107: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
108: # detect simple math mode entry exits, and convert them
109: # to use \ensuremath
110: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
111: $currentstring=~s/^\$//;
112: $currentstring=~s/\$$//;
113: $currentstring='\ensuremath{'.$currentstring.'}';
114: }
115: $Apache::lonxml::post_evaluate=0;
116: }
117: return $currentstring;
118: }
119:
120: sub end_m {
121: my ($target,$token) = @_;
122: my $currentstring = '';
123: if ($target eq 'tex') {
124: $currentstring = "";
125: }
126: return $currentstring;
127: }
128:
129: sub start_tthoption {
130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
131: my $result;
132: if ($target eq 'web') {
133: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
134: $inside=~s/^\s*//;
135: if ($env{'browser.mathml'}) {
136: &tth::ttmoptions($inside);
137: } else {
138: &tth::tthoptions($inside);
139: }
140: }
141: return $result;
142: }
143:
144: sub end_tthoption {
145: my ($target,$token) = @_;
146: my $result;
147: return $result;
148: }
149:
150: #-- <html> tag (end tag optional)
151: sub start_html {
152: my ($target,$token) = @_;
153: my $currentstring = '';
154: my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
155: &Apache::lontexconvert::init_tth();
156: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
157: $currentstring = &Apache::lonxml::xmlbegin();
158: } elsif ($target eq 'tex') {
159: $currentstring .= '\documentclass[letterpaper]{article}';
160: if (($env{'form.latex_type'}=~'batchmode') ||
161: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
162: $currentstring .= '\newcommand{\keephidden}[1]{}'.
163: '\renewcommand{\deg}{$^{\circ}$}'.
164: '\usepackage{longtable}'.
165: '\usepackage{textcomp}'.
166: '\usepackage{makeidx}'.
167: '\usepackage[dvips]{graphicx}'.
168: '\usepackage{picins}'.
169: '\usepackage{epsfig}'.
170: '\usepackage{calc}'.
171: '\usepackage{amsmath}'.
172: '\usepackage{amssymb}'.
173: '\usepackage{amsfonts}'.
174: '\usepackage{amsthm}'.
175: '\usepackage{amscd}'.
176: '\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}}'.
177: '\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}}';
178: }
179: return $currentstring;
180: }
181:
182: sub end_html {
183: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
184: my $currentstring = '';
185: if ($target eq 'web') {
186: $currentstring = '</html>';
187: }
188: return $currentstring;
189: }
190:
191: #-- <head> tag (end tag optional)
192: sub start_head {
193: my ($target,$token) = @_;
194: my $currentstring = '';
195: if ($target eq 'web') {
196: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
197: }
198: return $currentstring;
199: }
200:
201: sub end_head {
202: my ($target,$token) = @_;
203: my $currentstring = '';
204: if ($target eq 'web' && $env{'request.state'} eq 'published') {
205: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
206: $token->[2];
207: }
208: return $currentstring;
209: }
210:
211: #-- <map> tag (end tag required)
212: sub start_map {
213: my ($target,$token) = @_;
214: my $currentstring = '';
215: if ($target eq 'web') {
216: $currentstring = $token->[4];
217: }
218: return $currentstring;
219: }
220:
221: sub end_map {
222: my ($target,$token) = @_;
223: my $currentstring = '';
224: if ($target eq 'web') {
225: $currentstring = $token->[2];
226: }
227: return $currentstring;
228: }
229:
230: #-- <select> tag (end tag required)
231: sub start_select {
232: my ($target,$token) = @_;
233: my $currentstring = '';
234: if ($target eq 'web') {
235: $currentstring = $token->[4];
236: } elsif ($target eq 'tex') {
237: $Apache::londefdef::select=0;
238: }
239: return $currentstring;
240: }
241:
242: sub end_select {
243: my ($target,$token) = @_;
244: my $currentstring = '';
245: if ($target eq 'web') {
246: $currentstring = $token->[2];
247: }
248: return $currentstring;
249: }
250:
251: #-- <option> tag (end tag optional)
252: sub start_option {
253: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
254: my $currentstring = '';
255: if ($target eq 'web') {
256: $currentstring = $token->[4];
257: } elsif ($target eq 'tex') {
258: $Apache::londefdef::select++;
259: if ($Apache::londefdef::select == 1) {
260: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
261: } else {
262: $currentstring='\keephidden{';
263: }
264: }
265: return $currentstring;
266: }
267:
268: sub end_option {
269: my ($target,$token) = @_;
270: my $currentstring = '';
271: if ($target eq 'web') {
272: $currentstring = $token->[2];
273: } elsif ($target eq 'tex') {
274: $currentstring='}';
275: }
276: return $currentstring;
277: }
278:
279: #-- <input> tag (end tag forbidden)
280: sub start_input {
281: my ($target,$token) = @_;
282: my $currentstring = '';
283: if ($target eq 'web') {
284: $currentstring = $token->[4];
285: }
286: return $currentstring;
287: }
288:
289: sub end_input {
290: my ($target,$token) = @_;
291: my $currentstring = '';
292: if ($target eq 'web') {
293: $currentstring = $token->[2];
294: }
295: return $currentstring;
296: }
297:
298: #-- <textarea> tag (end tag required)
299: sub start_textarea {
300: my ($target,$token) = @_;
301: my $currentstring = '';
302: if ($target eq 'web') {
303: $currentstring = $token->[4];
304: }
305: return $currentstring;
306: }
307:
308: sub end_textarea {
309: my ($target,$token) = @_;
310: my $currentstring = '';
311: if ($target eq 'web') {
312: $currentstring = $token->[2];
313: }
314: return $currentstring;
315: }
316:
317: #-- <form> tag (end tag required)
318: sub start_form {
319: my ($target,$token) = @_;
320: my $currentstring = '';
321: if ($target eq 'web') {
322: $currentstring = $token->[4];
323: }
324: return $currentstring;
325: }
326:
327: sub end_form {
328: my ($target,$token) = @_;
329: my $currentstring = '';
330: if ($target eq 'web') {
331: $currentstring = $token->[2];
332: }
333: return $currentstring;
334: }
335:
336: #-- <title> tag (end tag required)
337: sub start_title {
338: my ($target,$token) = @_;
339: my $currentstring = '';
340: if ($target eq 'web') {
341: $currentstring = $token->[4];
342: } elsif ($target eq 'tex') {
343: $currentstring .= '\keephidden{Title of the document: '
344: }
345: if ($target eq 'meta') {
346: $currentstring='<title>';
347: &start_output($target);
348: }
349: return $currentstring;
350: }
351:
352: sub end_title {
353: my ($target,$token) = @_;
354: my $currentstring = '';
355: if ($target eq 'web') {
356: $currentstring = $token->[2];
357: } elsif ($target eq 'tex') {
358: $currentstring .= '}';
359: }
360: if ($target eq 'meta') {
361: &end_output($target);
362: $currentstring='</title>';
363: }
364: return $currentstring;
365: }
366:
367: #-- <meta> tag (end tag forbidden)
368: sub start_meta {
369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
370: my $currentstring = '';
371: if ($target eq 'web') {
372: my $args='';
373: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
374: if ($args eq '') {
375: &Apache::lonxml::get_all_text("/meta",$parser);
376: } else {
377: $currentstring = $token->[4];
378: }
379: } elsif ($target eq 'meta') {
380: unless (&Apache::lonxml::get_param
381: ('http-equiv',$parstack,$safeeval,undef,1)) {
382: my $name=$token->[2]->{'name'};
383: $name=~tr/A-Z/a-z/;
384: $name=~s/\s/\_/gs;
385: $name=~s/\W//gs;
386: if ($name) {
387: $currentstring='<'.$name;
388: my $display=&Apache::lonxml::get_param
389: ('display',$parstack,$safeeval,undef,1);
390: if ($display) {
391: $display=~s/\"/\'/g;
392: $currentstring.=' display="'.$display.'"';
393: }
394: $currentstring.='>'.
395: &Apache::lonxml::get_param
396: ('content',$parstack,$safeeval,undef,1).
397: '</'.$name.'>';
398: }
399: my $display=&Apache::lonxml::get_param
400: ('display',$parstack,$safeeval,undef,1);
401: if ($display) {
402: $display=&HTML::Entities::encode($display,'<>&"');
403: $currentstring.='<'.$name.'.display>'.$display.
404: '</'.$name.'.display>';
405: }
406: }
407: } elsif ($target eq 'tex') {
408: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
409: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
410: if ((not defined $content) && (not defined $name)) {
411: &Apache::lonxml::startredirection();
412: }
413: }
414: return $currentstring;
415: }
416:
417: sub end_meta {
418: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
419: my $currentstring = '';
420: if ($target eq 'web') {
421: my $args='';
422: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
423: if ($args ne '') {
424: $currentstring = $token->[4];
425: }
426: } elsif ($target eq 'tex') {
427: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
428: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
429: if ((not defined $content) && (not defined $name)) {
430: &Apache::lonxml::endredirection();
431: }
432: }
433: return $currentstring;
434: }
435:
436: # accessrule
437: sub start_accessrule {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
439: my $currentstring = '';
440: my $eff=&Apache::lonxml::get_param
441: ('effect',$parstack,$safeeval,undef,1);
442: my $realm=&Apache::lonxml::get_param
443: ('realm',$parstack,$safeeval,undef,1);
444: my $role=&Apache::lonxml::get_param
445: ('role',$parstack,$safeeval,undef,1);
446: $realm=~s/\s+//g;
447: $realm=~s/\//\_/g;
448: $realm=~s/^\_//;
449: $realm=~s/\W/\;/g;
450: $role=~s/\s+//g;
451: $role=~s/\//\_/g;
452: $role=~s/\W/\;/g;
453: if ($target eq 'web') {
454: my $args='';
455: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
456: if ($args eq '') {
457: &Apache::lonxml::get_all_text("/accessrule",$parser);
458: } else {
459: $currentstring = $token->[4];
460: }
461: }
462: if ($target eq 'meta') {
463: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
464: }
465: return $currentstring;
466: }
467:
468: sub end_accessrule {
469: my ($target,$token,$tagstack,$parstack,$parser) = @_;
470: my $currentstring = '';
471: if ($target eq 'web') {
472: my $args='';
473: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
474: if ($args ne '') {
475: $currentstring = $token->[4];
476: }
477: }
478: return $currentstring;
479: }
480:
481: #-- <body> tag (end tag required)
482: sub start_body {
483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
484: my $currentstring = '';
485:
486: if ($target eq 'web') {
487: if ($Apache::lonhomework::parsing_a_problem) {
488: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
489: return '';
490: }
491: if (!$Apache::lonxml::registered &&
492: $env{'request.state'} eq 'published') {
493: $currentstring.='<head>'.
494: &Apache::lonmenu::registerurl(undef,$target).'</head>';
495: }
496: # Accessibility
497: if ($env{'browser.imagesuppress'} eq 'on') {
498: delete($token->[2]->{'background'});
499: }
500: if ($env{'browser.fontenhance'} eq 'on') {
501: my $style='';
502: foreach my $key (keys(%{$token->[2]})) {
503: if ($key =~ /^style$/i) {
504: $style.=$token->[2]->{$key}.';';
505: delete($token->[2]->{$key});
506: }
507: }
508: $token->[2]->{'style'}=$style.'; font-size: x-large;';
509: }
510: if ($env{'browser.blackwhite'} eq 'on') {
511: delete($token->[2]->{'font'});
512: delete($token->[2]->{'link'});
513: delete($token->[2]->{'alink'});
514: delete($token->[2]->{'vlink'});
515: delete($token->[2]->{'bgcolor'});
516: delete($token->[2]->{'background'});
517: }
518: # Overload loads
519: my $onLoad='';
520: foreach my $key (keys(%{$token->[2]})) {
521: if ($key =~ /^onload$/i) {
522: $onLoad.=$token->[2]->{$key}.';';
523: delete($token->[2]->{$key});
524: }
525: }
526: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
527: my $onUnload='';
528: foreach my $key (keys(%{$token->[2]})) {
529: if ($key =~ /^onunload$/i) {
530: $onUnload.=$token->[2]->{$key}.';';
531: delete($token->[2]->{$key});
532: }
533: }
534: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
535: ';'.$onUnload;
536:
537: if ($env{'request.state'} ne 'construct') {
538: $currentstring .= '<'.$token->[1];
539: }
540: foreach (keys %{$token->[2]}) {
541: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
542: }
543: if ($env{'request.state'} ne 'construct') {
544: $currentstring.='>';
545: }
546: if ($env{'request.state'} ne 'published') {
547: my $remote=($env{'environment.remote'} ne 'off');
548: $currentstring=&Apache::loncommon::bodytag(undef,undef,
549: $currentstring,$remote);
550: $currentstring.=(<<EDITBUTTON);
551: <form method="post">
552: <input type="submit" name="editmode" accesskey="e" value="Edit" />
553: </form>
554: EDITBUTTON
555: } else {
556: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
557: }
558: $currentstring.=&Apache::lonxml::message_location();
559: } elsif ($target eq 'tex') {
560: $currentstring = '\begin{document}';
561: }
562: return $currentstring;
563: }
564:
565: sub end_body {
566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
567: my $currentstring = '';
568: if ($target eq 'web') {
569: $currentstring = &Apache::lonxml::xmlend($target,$parser);
570: } elsif ($target eq 'tex') {
571: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
572: }
573: return $currentstring;
574: }
575:
576: #-- <center> tag (end tag required)
577: sub start_center {
578: my ($target,$token) = @_;
579: my $currentstring = '';
580: if ($target eq 'web') {
581: $currentstring = $token->[4];
582: } elsif ($target eq 'tex') {
583: $currentstring = '\begin{center}';
584: }
585: return $currentstring;
586: }
587:
588: sub end_center {
589: my ($target,$token) = @_;
590: my $currentstring = '';
591: if ($target eq 'web') {
592: $currentstring = $token->[2];
593: } elsif ($target eq 'tex') {
594: $currentstring = '\end{center}';
595: }
596: return $currentstring;
597: }
598:
599: #-- <b> tag (end tag required)
600: sub start_b {
601: my ($target,$token) = @_;
602: my $currentstring = '';
603: if ($target eq 'web') {
604: $currentstring = $token->[4];
605: } elsif ($target eq 'tex') {
606: $currentstring = '\textbf{';
607: }
608: return $currentstring;
609: }
610:
611: sub end_b {
612: my ($target,$token) = @_;
613: my $currentstring = '';
614: if ($target eq 'web') {
615: $currentstring = $token->[2];
616: } elsif ($target eq 'tex') {
617: $currentstring = '}';
618: }
619: return $currentstring;
620: }
621:
622: #-- <strong> tag (end tag required)
623: sub start_strong {
624: my ($target,$token) = @_;
625: my $currentstring = '';
626: if ($target eq 'web') {
627: $currentstring = $token->[4];
628: } elsif ($target eq 'tex') {
629: $currentstring = '\textbf{';
630: }
631: return $currentstring;
632: }
633:
634: sub end_strong {
635: my ($target,$token) = @_;
636: my $currentstring = '';
637: if ($target eq 'web') {
638: $currentstring = $token->[2];
639: } elsif ($target eq 'tex') {
640: $currentstring = '}';
641: }
642: return $currentstring;
643: }
644:
645: #-- <h1> tag (end tag required)
646: sub start_h1 {
647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
648: my $currentstring = '';
649: if ($target eq 'web') {
650: $currentstring .= $token->[4];
651: } elsif ($target eq 'tex') {
652: my $pre;
653: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
654: if ($align eq 'center') {
655: $pre='\begin{center}';
656: } elsif ($align eq 'left') {
657: $pre='\rlap{';
658: } elsif ($align eq 'right') {
659: $pre=' \hfill \llap{';
660: }
661: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
662: if (not defined $TeXsize) {$TeXsize="large";}
663: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
664: } elsif ($target eq 'meta') {
665: $currentstring='<subject>';
666: &start_output($target);
667: }
668: return $currentstring;
669: }
670:
671: sub end_h1 {
672: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
673: my $currentstring = '';
674: if ($target eq 'web') {
675: $currentstring .= $token->[2];
676: } elsif ($target eq 'tex') {
677: my $post='\vskip 0 mm ';
678: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
679: if ($align eq 'center') {
680: $post='\end{center}';
681: } elsif ($align eq 'left') {
682: $post='} \hfill'.'\vskip 0 mm ';
683: } elsif ($align eq 'right') {
684: $post='}'.'\vskip 0 mm ';
685: }
686: $currentstring .= '}}'.$post;
687: } elsif ($target eq 'meta') {
688: &end_output($target);
689: $currentstring='</subject>';
690: }
691: return $currentstring;
692: }
693:
694: #-- <h2> tag
695: sub start_h2 {
696: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
697: my $currentstring = '';
698: if ($target eq 'web') {
699: $currentstring .= $token->[4];
700: } elsif ($target eq 'tex') {
701: my $pre;
702: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
703: if ($align eq 'center') {
704: $pre='\begin{center}';
705: } elsif ($align eq 'left') {
706: $pre='\rlap{';
707: } elsif ($align eq 'right') {
708: $pre=' \hfill \llap{';
709: }
710: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
711: if (not defined $TeXsize) {$TeXsize="large";}
712: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
713: }
714: return $currentstring;
715: }
716:
717: sub end_h2 {
718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
719: my $currentstring = '';
720: if ($target eq 'web') {
721: $currentstring .= $token->[2];
722: } elsif ($target eq 'tex') {
723: my $post='\vskip 0 mm ';
724: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
725: if ($align eq 'center') {
726: $post='\end{center}';
727: } elsif ($align eq 'left') {
728: $post='} \hfill'.'\vskip 0 mm ';
729: } elsif ($align eq 'right') {
730: $post='}'.'\vskip 0 mm ';
731: }
732: $currentstring .= '}}'.$post;
733: }
734: return $currentstring;
735: }
736:
737: #-- <h3> tag
738: sub start_h3 {
739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
740: my $currentstring = '';
741: if ($target eq 'web') {
742: $currentstring .= $token->[4];
743: } elsif ($target eq 'tex') {
744: my $pre;
745: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
746: if ($align eq 'center') {
747: $pre='\begin{center}';
748: } elsif ($align eq 'left') {
749: $pre='\rlap{';
750: } elsif ($align eq 'right') {
751: $pre=' \hfill \llap{';
752: }
753: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
754: if (not defined $TeXsize) {$TeXsize="large";}
755: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
756: }
757: return $currentstring;
758: }
759:
760: sub end_h3 {
761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
762: my $currentstring = '';
763: if ($target eq 'web') {
764: $currentstring .= $token->[2];
765: } elsif ($target eq 'tex') {
766: my $post='\vskip 0 mm ';
767: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
768: if ($align eq 'center') {
769: $post='\end{center}';
770: } elsif ($align eq 'left') {
771: $post='} \hfill'.'\vskip 0 mm ';
772: } elsif ($align eq 'right') {
773: $post='}'.'\vskip 0 mm ';
774: }
775: $currentstring .= '}}'.$post;
776: }
777: return $currentstring;
778: }
779:
780: #-- <h4> tag
781: sub start_h4 {
782: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
783: my $currentstring = '';
784: if ($target eq 'web') {
785: $currentstring .= $token->[4];
786: } elsif ($target eq 'tex') {
787: my $pre;
788: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
789: if ($align eq 'center') {
790: $pre='\begin{center}';
791: } elsif ($align eq 'left') {
792: $pre='\rlap{';
793: } elsif ($align eq 'right') {
794: $pre=' \hfill \llap{';
795: }
796: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
797: if (not defined $TeXsize) {$TeXsize="large";}
798: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
799: }
800: return $currentstring;
801: }
802:
803: sub end_h4 {
804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
805: my $currentstring = '';
806: if ($target eq 'web') {
807: $currentstring .= $token->[2];
808: } elsif ($target eq 'tex') {
809: my $post='\vskip 0 mm ';
810: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
811: if ($align eq 'center') {
812: $post='\end{center}';
813: } elsif ($align eq 'left') {
814: $post='} \hfill'.'\vskip 0 mm ';
815: } elsif ($align eq 'right') {
816: $post='}'.'\vskip 0 mm ';
817: }
818: $currentstring .= '}}'.$post;
819: }
820: return $currentstring;
821: }
822:
823: #-- <h5> tag
824: sub start_h5 {
825: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
826: my $currentstring = '';
827: if ($target eq 'web') {
828: $currentstring .= $token->[4];
829: } elsif ($target eq 'tex') {
830: my $pre;
831: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
832: if ($align eq 'center') {
833: $pre='\begin{center}';
834: } elsif ($align eq 'left') {
835: $pre='\rlap{';
836: } elsif ($align eq 'right') {
837: $pre=' \hfill \llap{';
838: }
839: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
840: if (not defined $TeXsize) {$TeXsize="large";}
841: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
842: }
843: return $currentstring;
844: }
845:
846: sub end_h5 {
847: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
848: my $currentstring = '';
849: if ($target eq 'web') {
850: $currentstring .= $token->[2];
851: } elsif ($target eq 'tex') {
852: my $post='\vskip 0 mm ';
853: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
854: if ($align eq 'center') {
855: $post='\end{center}';
856: } elsif ($align eq 'left') {
857: $post='} \hfill'.'\vskip 0 mm ';
858: } elsif ($align eq 'right') {
859: $post='}'.'\vskip 0 mm ';
860: }
861: $currentstring .= '}}'.$post;
862: }
863: return $currentstring;
864: }
865:
866: #-- <h6> tag
867: sub start_h6 {
868: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
869: my $currentstring = '';
870: if ($target eq 'web') {
871: $currentstring .= $token->[4];
872: } elsif ($target eq 'tex') {
873: my $pre;
874: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
875: if ($align eq 'center') {
876: $pre='\begin{center}';
877: } elsif ($align eq 'left') {
878: $pre='\rlap{';
879: } elsif ($align eq 'right') {
880: $pre=' \hfill \llap{';
881: }
882: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
883: if (not defined $TeXsize) {$TeXsize="large";}
884: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
885: }
886: return $currentstring;
887: }
888:
889: sub end_h6 {
890: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
891: my $currentstring = '';
892: if ($target eq 'web') {
893: $currentstring .= $token->[2];
894: } elsif ($target eq 'tex') {
895: my $post='\vskip 0 mm ';
896: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
897: if ($align eq 'center') {
898: $post='\end{center}';
899: } elsif ($align eq 'left') {
900: $post='} \hfill'.'\vskip 0 mm ';
901: } elsif ($align eq 'right') {
902: $post='}'.'\vskip 0 mm ';
903: }
904: $currentstring .= '}}'.$post;
905: }
906: return $currentstring;
907: }
908:
909: #--- <cite> tag (end tag required)
910: sub start_cite {
911: my ($target,$token) = @_;
912: my $currentstring = '';
913: if ($target eq 'web') {
914: $currentstring .= $token->[4];
915: } elsif ($target eq 'tex') {
916: $currentstring .= '\textit{';
917: }
918: return $currentstring;
919: }
920:
921: sub end_cite {
922: my ($target,$token) = @_;
923: my $currentstring = '';
924: if ($target eq 'web') {
925: $currentstring .= $token->[2];
926: } elsif ($target eq 'tex') {
927: $currentstring .= '}';
928: }
929: return $currentstring;
930: }
931:
932: #-- <i> tag (end tag required)
933: sub start_i {
934: my ($target,$token) = @_;
935: my $currentstring = '';
936: if ($target eq 'web') {
937: $currentstring .= $token->[4];
938: } elsif ($target eq 'tex') {
939: $currentstring .= '\textit{';
940: }
941: return $currentstring;
942: }
943:
944: sub end_i {
945: my ($target,$token) = @_;
946: my $currentstring = '';
947: if ($target eq 'web') {
948: $currentstring .= $token->[2];
949: } elsif ($target eq 'tex') {
950: $currentstring .= '}';
951: }
952: return $currentstring;
953: }
954:
955: #-- <address> tag (end tag required)
956: sub start_address {
957: my ($target,$token) = @_;
958: my $currentstring = '';
959: if ($target eq 'web') {
960: $currentstring .= $token->[4];
961: } elsif ($target eq 'tex') {
962: $currentstring .= '\textit{';
963: }
964: return $currentstring;
965: }
966:
967: sub end_address {
968: my ($target,$token) = @_;
969: my $currentstring = '';
970: if ($target eq 'web') {
971: $currentstring .= $token->[2];
972: } elsif ($target eq 'tex') {
973: $currentstring .= '}';
974: }
975: return $currentstring;
976: }
977:
978: #-- <dfn> tag (end tag required)
979: sub start_dfn {
980: my ($target,$token) = @_;
981: my $currentstring = '';
982: if ($target eq 'web') {
983: $currentstring .= $token->[4];
984: } elsif ($target eq 'tex') {
985: $currentstring .= '\textit{';
986: }
987: return $currentstring;
988: }
989:
990: sub end_dfn {
991: my ($target,$token) = @_;
992: my $currentstring = '';
993: if ($target eq 'web') {
994: $currentstring .= $token->[2];
995: } elsif ($target eq 'tex') {
996: $currentstring .= '}';
997: }
998: return $currentstring;
999: }
1000:
1001: #-- <tt> tag (end tag required)
1002: sub start_tt {
1003: my ($target,$token) = @_;
1004: my $currentstring = '';
1005: if ($target eq 'web') {
1006: $currentstring .= $token->[4];
1007: } elsif ($target eq 'tex') {
1008: $currentstring .= '\texttt{';
1009: }
1010: return $currentstring;
1011: }
1012:
1013: sub end_tt {
1014: my ($target,$token) = @_;
1015: my $currentstring = '';
1016: if ($target eq 'web') {
1017: $currentstring .= $token->[2];
1018: } elsif ($target eq 'tex') {
1019: $currentstring .= '}';
1020: }
1021: return $currentstring;
1022: }
1023:
1024: #-- <kbd> tag (end tag required)
1025: sub start_kbd {
1026: my ($target,$token) = @_;
1027: my $currentstring = '';
1028: if ($target eq 'web') {
1029: $currentstring .= $token->[4];
1030: } elsif ($target eq 'tex') {
1031: $currentstring .= '\texttt{';
1032: }
1033: return $currentstring;
1034: }
1035:
1036: sub end_kbd {
1037: my ($target,$token) = @_;
1038: my $currentstring = '';
1039: if ($target eq 'web') {
1040: $currentstring .= $token->[2];
1041: } elsif ($target eq 'tex') {
1042: $currentstring .= '}';
1043: }
1044: return $currentstring;
1045: }
1046:
1047: #-- <code> tag (end tag required)
1048: sub start_code {
1049: my ($target,$token) = @_;
1050: my $currentstring = '';
1051: if ($target eq 'web') {
1052: $currentstring .= $token->[4];
1053: } elsif ($target eq 'tex') {
1054: $currentstring .= '\texttt{';
1055: }
1056: return $currentstring;
1057: }
1058:
1059: sub end_code {
1060: my ($target,$token) = @_;
1061: my $currentstring = '';
1062: if ($target eq 'web') {
1063: $currentstring .= $token->[2];
1064: } elsif ($target eq 'tex') {
1065: $currentstring .= '}';
1066: }
1067: return $currentstring;
1068: }
1069:
1070: #-- <em> tag (end tag required)
1071: sub start_em {
1072: my ($target,$token) = @_;
1073: my $currentstring = '';
1074: if ($target eq 'web') {
1075: $currentstring .= $token->[4];
1076: } elsif ($target eq 'tex') {
1077: $currentstring .= '\emph{';
1078: }
1079: return $currentstring;
1080: }
1081:
1082: sub end_em {
1083: my ($target,$token) = @_;
1084: my $currentstring = '';
1085: if ($target eq 'web') {
1086: $currentstring .= $token->[2];
1087: } elsif ($target eq 'tex') {
1088: $currentstring .= '}';
1089: }
1090: return $currentstring;
1091: }
1092:
1093: #-- <q> tag (end tag required)
1094: sub start_q {
1095: my ($target,$token) = @_;
1096: my $currentstring = '';
1097: if ($target eq 'web') {
1098: $currentstring .= $token->[4];
1099: } elsif ($target eq 'tex') {
1100: $currentstring .= '\emph{';
1101: }
1102: return $currentstring;
1103: }
1104:
1105: sub end_q {
1106: my ($target,$token) = @_;
1107: my $currentstring = '';
1108: if ($target eq 'web') {
1109: $currentstring .= $token->[2];
1110: } elsif ($target eq 'tex') {
1111: $currentstring .= '}';
1112: }
1113: return $currentstring;
1114: }
1115:
1116: #-- <p> tag (end tag optional)
1117: #optional attribute - align="center|left|right"
1118: sub start_p {
1119: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1120: my $currentstring = '';
1121: if ($target eq 'web') {
1122: $currentstring .= $token->[4];
1123: } elsif ($target eq 'tex') {
1124: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1125: if ($align eq 'center') {
1126: $currentstring='\begin{center}\par';
1127: } elsif ($align eq 'right') {
1128: $currentstring='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1129: } elsif ($align eq 'left') {
1130: $currentstring='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
1131: } else {
1132: $currentstring='\par ';
1133: }
1134: my $signal=1;#<p> does not work inside <b>...</b>
1135: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1136: if (!$signal) {$currentstring = '';}
1137: }
1138: }
1139: return $currentstring;
1140: }
1141:
1142: sub end_p {
1143: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1144: my $currentstring = '';
1145: if ($target eq 'web') {
1146: $currentstring .= $token->[2];
1147: } elsif ($target eq 'tex') {
1148: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1149: if (not defined $align) {
1150: $currentstring.='\strut\\\\\strut ';
1151: } elsif ($align eq 'center') {
1152: $currentstring .= '\end{center}';
1153: } elsif ($align eq 'right') {
1154: $currentstring .= '}}';
1155: } elsif ($align eq 'left') {
1156: $currentstring .= '}\hfill}';
1157: }
1158: }
1159: return $currentstring;
1160: }
1161:
1162: #-- <br> tag (end tag forbidden)
1163: sub start_br {
1164: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1165: my $currentstring = '';
1166: if ($target eq 'web') {
1167: $currentstring .= $token->[4];
1168: } elsif ($target eq 'tex') {
1169: my @tempo=@$tagstack;
1170: my $signal=0;
1171: for (my $i=$#tempo;$i>=0;$i--) {
1172: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1173: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1174: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1175: $signal=1;
1176: last;
1177: }
1178: }
1179: if ($signal) {
1180: $currentstring .= ' \vskip 0 mm ';
1181: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1182: $currentstring .= '\strut \\\\ \strut ';
1183: }
1184: }
1185: return $currentstring;
1186: }
1187:
1188: sub end_br {
1189: my ($target,$token) = @_;
1190: my $currentstring = '';
1191: if ($target eq 'web') {
1192: $currentstring .= $token->[2];
1193: }
1194: return $currentstring;
1195: }
1196:
1197: #-- <big> tag (end tag required)
1198: sub start_big {
1199: my ($target,$token) = @_;
1200: my $currentstring = '';
1201: if ($target eq 'web') {
1202: $currentstring .= $token->[4];
1203: } elsif ($target eq 'tex') {
1204: $currentstring .= '{\large ';
1205: }
1206: return $currentstring;
1207: }
1208:
1209: sub end_big {
1210: my ($target,$token) = @_;
1211: my $currentstring = '';
1212: if ($target eq 'web') {
1213: $currentstring .= $token->[2];
1214: } elsif ($target eq 'tex') {
1215: $currentstring .= '}';
1216: }
1217: return $currentstring;
1218: }
1219:
1220: #-- <small> tag (end tag required)
1221: sub start_small {
1222: my ($target,$token) = @_;
1223: my $currentstring = '';
1224: if ($target eq 'web') {
1225: $currentstring .= $token->[4];
1226: } elsif ($target eq 'tex') {
1227: $currentstring .= '{\footnotesize ';
1228: }
1229: return $currentstring;
1230: }
1231:
1232: sub end_small {
1233: my ($target,$token) = @_;
1234: my $currentstring = '';
1235: if ($target eq 'web') {
1236: $currentstring .= $token->[2];
1237: } elsif ($target eq 'tex') {
1238: $currentstring .= '}';
1239: }
1240: return $currentstring;
1241: }
1242:
1243: #-- <basefont> tag (end tag forbidden)
1244: sub start_basefont {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1246: my $currentstring = '';
1247: if ($target eq 'web') {
1248: $currentstring = $token->[4];
1249: } elsif ($target eq 'tex') {
1250: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1251: if (defined $basesize) {
1252: $currentstring = '{\\'.$basesize.' ';
1253: }
1254: }
1255: return $currentstring;
1256: }
1257:
1258: sub end_basefont {
1259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1260: my $currentstring = '';
1261: if ($target eq 'web') {
1262: $currentstring = $token->[4];
1263: } elsif ($target eq 'tex') {
1264: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1265: if (defined $basesize) {
1266: $currentstring = '}';
1267: }
1268: }
1269: return $currentstring;
1270: }
1271:
1272: #-- <font> tag (end tag required)
1273: sub start_font {
1274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1275: my $currentstring = '';
1276: if ($target eq 'web') {
1277: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1278: if ($face!~/symbol/i) {
1279: if (($env{'browser.fontenhance'} eq 'on') ||
1280: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1281: }
1282: $currentstring = $token->[4];
1283: } elsif ($target eq 'tex') {
1284: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1285: if (defined $fontsize) {
1286: $currentstring = '{\\'.$fontsize.' ';
1287: }
1288: }
1289: return $currentstring;
1290: }
1291:
1292: sub end_font {
1293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1294: my $currentstring = '';
1295: if ($target eq 'web') {
1296: $currentstring = $token->[2];
1297: } elsif ($target eq 'tex') {
1298: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1299: if (defined $fontsize) {
1300: $currentstring = '}';
1301: }
1302: }
1303: return $currentstring;
1304: }
1305:
1306: #-- <strike> tag (end tag required)
1307: sub start_strike {
1308: my ($target,$token) = @_;
1309: my $currentstring = '';
1310: if ($target eq 'web') {
1311: $currentstring .= $token->[4];
1312: } elsif ($target eq 'tex') {
1313: &Apache::lonxml::startredirection();
1314: }
1315: return $currentstring;
1316: }
1317:
1318: sub end_strike {
1319: my ($target,$token) = @_;
1320: my $currentstring = '';
1321: if ($target eq 'web') {
1322: $currentstring .= $token->[2];
1323: } elsif ($target eq 'tex') {
1324: $currentstring=&Apache::lonxml::endredirection();
1325: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1326: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1327: $currentstring=~s/(\S)\s*$/$1\}/;
1328: }
1329: return $currentstring;
1330: }
1331:
1332: #-- <s> tag (end tag required)
1333: sub start_s {
1334: my ($target,$token) = @_;
1335: my $currentstring = '';
1336: if ($target eq 'web') {
1337: $currentstring .= $token->[4];
1338: } elsif ($target eq 'tex') {
1339: &Apache::lonxml::startredirection();
1340: }
1341: return $currentstring;
1342: }
1343:
1344: sub end_s {
1345: my ($target,$token) = @_;
1346: my $currentstring = '';
1347: if ($target eq 'web') {
1348: $currentstring .= $token->[2];
1349: } elsif ($target eq 'tex') {
1350: $currentstring=&Apache::lonxml::endredirection();
1351: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1352: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1353: $currentstring=~s/(\S)\s*$/$1\}/;
1354: }
1355: return $currentstring;
1356: }
1357:
1358: #-- <sub> tag (end tag required)
1359: sub start_sub {
1360: my ($target,$token) = @_;
1361: my $currentstring = '';
1362: if ($target eq 'web') {
1363: $currentstring .= $token->[4];
1364: } elsif ($target eq 'tex') {
1365: $currentstring .= '\ensuremath{_{';
1366: }
1367: return $currentstring;
1368: }
1369:
1370: sub end_sub {
1371: my ($target,$token) = @_;
1372: my $currentstring = '';
1373: if ($target eq 'web') {
1374: $currentstring .= $token->[2];
1375: } elsif ($target eq 'tex') {
1376: $currentstring .= '}}';
1377: }
1378: return $currentstring;
1379: }
1380:
1381: #-- <sup> tag (end tag required)
1382: sub start_sup {
1383: my ($target,$token) = @_;
1384: my $currentstring = '';
1385: if ($target eq 'web') {
1386: $currentstring .= $token->[4];
1387: } elsif ($target eq 'tex') {
1388: $currentstring .= '\ensuremath{^{';
1389: }
1390: return $currentstring;
1391: }
1392:
1393: sub end_sup {
1394: my ($target,$token) = @_;
1395: my $currentstring = '';
1396: if ($target eq 'web') {
1397: $currentstring .= $token->[2];
1398: } elsif ($target eq 'tex') {
1399: $currentstring .= '}}';
1400: }
1401: return $currentstring;
1402: }
1403:
1404: #-- <hr> tag (end tag forbidden)
1405: sub start_hr {
1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1407: my $currentstring = '';
1408: if ($target eq 'web') {
1409: $currentstring .= $token->[4];
1410: } elsif ($target eq 'tex') {
1411: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1412: if (defined $LaTeXwidth) {
1413: if ($LaTeXwidth=~/^%/) {
1414: substr($LaTeXwidth,0,1)='';
1415: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1416: }
1417: } else {
1418: $LaTeXwidth ='0.9\textwidth';
1419: }
1420: my ($pre,$post);
1421: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1422: if (($align eq 'center') || (not defined $align)) {
1423: $pre=''; $post='';
1424: } elsif ($align eq 'left') {
1425: $pre='\rlap{'; $post='} \hfill';
1426: } elsif ($align eq 'right') {
1427: $pre=' \hfill \llap{'; $post='}';
1428: }
1429: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1430: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1431: }
1432: return $currentstring;
1433: }
1434:
1435: sub end_hr {
1436: my ($target,$token) = @_;
1437: my $currentstring = '';
1438: if ($target eq 'web') {
1439: $currentstring .= $token->[2];
1440: }
1441: return $currentstring;
1442: }
1443:
1444: #-- <div> tag (end tag required)
1445: sub start_div {
1446: my ($target,$token) = @_;
1447: my $currentstring = '';
1448: if ($target eq 'web') {
1449: $currentstring .= $token->[4];
1450: }
1451: return $currentstring;
1452: }
1453:
1454: sub end_div {
1455: my ($target,$token) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web') {
1458: $currentstring .= $token->[2];
1459: }
1460: return $currentstring;
1461: }
1462:
1463: #-- <a> tag (end tag required)
1464: sub start_a {
1465: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1466: my $currentstring = '';
1467: if ($target eq 'web') {
1468: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1469: undef,1);
1470: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1471: } elsif ($target eq 'tex') {
1472: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1473: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1474: if ($a=~/\S/) {
1475: $a=~s/([^\\])%/$1\\\%/g;
1476: $currentstring .= '\ref{URI: '.$a.'}';
1477: } elsif ($b=~/\S/) {
1478: $currentstring .= '\ref{Anchor: '.$b.'}';
1479: } else {
1480: $currentstring.='';
1481: }
1482: }
1483: return $currentstring;
1484: }
1485:
1486: sub end_a {
1487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1488: my $currentstring = '';
1489: if ($target eq 'web') {
1490: $currentstring .= $token->[2];
1491: }
1492: return $currentstring;
1493: }
1494:
1495: #-- <li> tag (end tag optional)
1496: sub start_li {
1497: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1498: my $currentstring = '';
1499: if ($target eq 'web') {
1500: $currentstring = $token->[4];
1501: } elsif ($target eq 'tex') {
1502: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1503: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1504: #FIXME need to support types i and I
1505: if ($type=~/disc/) {
1506: $currentstring .= ' \item[$\bullet$] ';
1507: } elsif ($type=~/circle/) {
1508: $currentstring .= ' \item[$\circ$] ';
1509: } elsif ($type=~/square/) {
1510: $currentstring .= ' \item[$\diamond$] ';
1511: } elsif ($type eq '1') {
1512: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1513: } elsif ($type eq 'A') {
1514: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1515: } elsif ($type eq 'a') {
1516: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1517: } elsif ($value ne '') {
1518: $currentstring .= ' \item['.$value.'] ';
1519: } else {
1520: $currentstring .= ' \item ';
1521: }
1522: $Apache::londefdef::list_index++;
1523: }
1524: return $currentstring;
1525: }
1526:
1527: sub end_li {
1528: my ($target,$token) = @_;
1529: my $currentstring = '';
1530: if ($target eq 'web') {
1531: $currentstring = $token->[2];
1532: }
1533: return $currentstring;
1534: }
1535:
1536: #-- <u> tag (end tag required)
1537: sub start_u {
1538: my ($target,$token) = @_;
1539: my $currentstring = '';
1540: if ($target eq 'web') {
1541: $currentstring .= $token->[4];
1542: } elsif ($target eq 'tex') {
1543: &Apache::lonxml::startredirection();
1544: }
1545: return $currentstring;
1546: }
1547:
1548: sub end_u {
1549: my ($target,$token) = @_;
1550: my $currentstring = '';
1551: if ($target eq 'web') {
1552: $currentstring .= $token->[2];
1553: } elsif ($target eq 'tex') {
1554: $currentstring=&Apache::lonxml::endredirection();
1555: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1556: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1557: $currentstring=~s/(\S)\s*$/$1\}/;
1558: }
1559: return $currentstring;
1560: }
1561:
1562: #-- <ul> tag (end tag required)
1563: sub start_ul {
1564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1565: my $currentstring = '';
1566: if ($target eq 'web') {
1567: $currentstring = $token->[4];
1568: } elsif ($target eq 'tex') {
1569: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1570: $Apache::londefdef::list_index=0;
1571: if ($TeXtype eq 'disc') {
1572: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1573: '\renewcommand{\labelitemii}{$\bullet$}'.
1574: '\renewcommand{\labelitemiii}{$\bullet$}'.
1575: '\renewcommand{\labelitemiv}{$\bullet$}';
1576: } elsif ($TeXtype eq 'circle') {
1577: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1578: '\renewcommand{\labelitemii}{$\circ$}'.
1579: '\renewcommand{\labelitemiii}{$\circ$}'.
1580: '\renewcommand{\labelitemiv}{$\circ$}';
1581: } elsif ($TeXtype eq 'square') {
1582: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1583: '\renewcommand{\labelitemii}{$\diamond$}'.
1584: '\renewcommand{\labelitemiii}{$\diamond$}'.
1585: '\renewcommand{\labelitemiv}{$\diamond$}';
1586: }
1587: $currentstring .= '\strut \begin{itemize}';
1588: }
1589: return $currentstring;
1590: }
1591:
1592: sub end_ul {
1593: my ($target,$token) = @_;
1594: my $currentstring = '';
1595: if ($target eq 'web') {
1596: $currentstring = $token->[2];
1597: } elsif ($target eq 'tex') {
1598: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1599: '\renewcommand{\labelitemii}{$\bullet$}'.
1600: '\renewcommand{\labelitemiii}{$\bullet$}'.
1601: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <menu> tag (end tag required)
1607: sub start_menu {
1608: my ($target,$token) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring = $token->[4];
1612: } elsif ($target eq 'tex') {
1613: $currentstring = " \\begin{itemize} ";
1614: }
1615: return $currentstring;
1616: }
1617:
1618: sub end_menu {
1619: my ($target,$token) = @_;
1620: my $currentstring = '';
1621: if ($target eq 'web') {
1622: $currentstring = $token->[2];
1623: } elsif ($target eq 'tex') {
1624: $currentstring = " \\end{itemize}";
1625: }
1626: return $currentstring;
1627: }
1628:
1629: #-- <dir> tag (end tag required)
1630: sub start_dir {
1631: my ($target,$token) = @_;
1632: my $currentstring = '';
1633: if ($target eq 'web') {
1634: $currentstring = $token->[4];
1635: } elsif ($target eq 'tex') {
1636: $currentstring = " \\begin{itemize} ";
1637: }
1638: return $currentstring;
1639: }
1640:
1641: sub end_dir {
1642: my ($target,$token) = @_;
1643: my $currentstring = '';
1644: if ($target eq 'web') {
1645: $currentstring = $token->[2];
1646: } elsif ($target eq 'tex') {
1647: $currentstring = " \\end{itemize}";
1648: }
1649: return $currentstring;
1650: }
1651:
1652: #-- <ol> tag (end tag required)
1653: sub start_ol {
1654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1655: my $currentstring = '';
1656: if ($target eq 'web') {
1657: $currentstring = $token->[4];
1658: } elsif ($target eq 'tex') {
1659: $Apache::londefdef::list_index=0;
1660: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1661: if ($type eq '1') {
1662: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1663: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1664: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1665: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1666: } elsif ($type eq 'A') {
1667: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1668: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1669: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1670: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1671: } elsif ($type eq 'a') {
1672: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1673: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1674: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1675: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1676: } elsif ($type eq 'i') {
1677: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1678: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1679: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1680: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1681: } elsif ($type eq 'I') {
1682: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1683: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1684: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1685: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1686: }
1687: $currentstring .= '\strut \begin{enumerate}';
1688: }
1689: return $currentstring;
1690: }
1691:
1692: sub end_ol {
1693: my ($target,$token) = @_;
1694: my $currentstring = '';
1695: if ($target eq 'web') {
1696: $currentstring = $token->[2];
1697: } elsif ($target eq 'tex') {
1698: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1699: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1700: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1701: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1702: }
1703: return $currentstring;
1704: }
1705:
1706: #-- <dl> tag (end tag required)
1707: sub start_dl {
1708: my ($target,$token) = @_;
1709: my $currentstring = '';
1710: if ($target eq 'web') {
1711: $currentstring = $token->[4];
1712: } elsif ($target eq 'tex') {
1713: $currentstring = '\begin{description}';
1714: $Apache::londefdef::DL++;
1715: push(@Apache::londefdef::description,[]);
1716: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1717: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1718: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1719: }
1720: return $currentstring;
1721: }
1722:
1723: sub end_dl {
1724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1725: my $currentstring = '';
1726: if ($target eq 'web') {
1727: $currentstring = $token->[2];
1728: } elsif ($target eq 'tex') {
1729: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1730: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1731: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1732: $currentstring.=' '.$element.' ';
1733: }
1734: pop(@Apache::londefdef::description);
1735: $currentstring.='\end{description}';
1736: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1737: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1738: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1739: $Apache::londefdef::DL--;
1740: }
1741: return $currentstring;
1742: }
1743:
1744: #-- <dt> tag (end tag optional)
1745: sub start_dt {
1746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1747: my $currentstring='';
1748: if ($target eq 'web') {
1749: $currentstring = $token->[4];
1750: } elsif ($target eq 'tex') {
1751: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1752: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1753: &Apache::lonxml::startredirection();
1754: $Apache::londefdef::DT[-1]++;
1755: $Apache::londefdef::seenDT[-1]=1;
1756: }
1757: return $currentstring;
1758: }
1759:
1760: sub end_dt {
1761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1762: my $currentstring = '';
1763: if ($target eq 'web') {
1764: $currentstring = $token->[2];
1765: } elsif ($target eq 'tex') {
1766: if ($Apache::londefdef::DT[-1]) {
1767: my $data=&item_cleanup();
1768: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1769: $Apache::londefdef::DT[-1]--;
1770: }
1771: }
1772: return $currentstring;
1773: }
1774:
1775: sub item_cleanup {
1776: my $item=&Apache::lonxml::endredirection();
1777: $item=~s/\\begin{center}//g;
1778: $item=~s/\\end{center}//g;
1779: return $item;
1780: }
1781:
1782: #-- <dd> tag (end tag optional)
1783: sub start_dd {
1784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1785: my $currentstring = '';
1786: if ($target eq 'web') {
1787: $currentstring = $token->[4];
1788: } elsif ($target eq 'tex') {
1789: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1790: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1791: if (!$Apache::londefdef::seenDT[-1]) {
1792: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1793: }
1794: push(@{$Apache::londefdef::description[-1]},'');
1795: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1796: $Apache::londefdef::DD[-1]++;
1797: &Apache::lonxml::startredirection();
1798: }
1799: return $currentstring;
1800: }
1801:
1802: sub end_dd {
1803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1804: my $currentstring = '';
1805: if ($target eq 'web') {
1806: $currentstring = $token->[2];
1807: } elsif ($target eq 'tex') {
1808: $Apache::londefdef::description[-1]->[-1].=
1809: &Apache::lonxml::endredirection().' \vskip 0mm ';
1810: $Apache::londefdef::DD[-1]--;
1811: }
1812: return $currentstring;
1813: }
1814:
1815: #-- <table> tag (end tag required)
1816: #list of supported attributes: border,width,TeXwidth
1817: sub start_table {
1818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1819: my ($textwidth,$currentstring)=('','');
1820: if ($target eq 'web') {
1821: $currentstring = $token->[4];
1822: } elsif ($target eq 'tex') {
1823: my $aa = {};
1824: push @Apache::londefdef::table, $aa;
1825: $Apache::londefdef::table[-1]{'row_number'} = -1;
1826: #maximum table's width (default coincides with text line length)
1827: if ($#Apache::londefdef::table==0) {
1828: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1829: $textwidth=~/(\d+\.?\d*)/;
1830: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1831: } else {
1832: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1833: #the maximum width of nested table is determined by LATeX width of parent cell
1834: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1835: } else {
1836: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1837: $textwidth=$Apache::londefdef::table[-2]{'width'};
1838: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1839: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1840: }
1841: }
1842: }
1843: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1844: if (not defined $TeXwidth) {
1845: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1846: if ($htmlwidth=~/%/) {
1847: $Apache::londefdef::table[-1]{'percent'}=1;
1848: $htmlwidth=~/(\d+)/;
1849: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1850: } else {
1851: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1852: }
1853: } elsif ($TeXwidth=~/%/) {
1854: $Apache::londefdef::table[-1]{'percent'}=1;
1855: $TeXwidth=~/(\d+)/;
1856: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1857: } else {
1858: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1859: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1860: }
1861: #table's border
1862: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1863: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1864: unless (defined $border) { $border = 0; }
1865: if ($border) {
1866: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1867: $Apache::londefdef::table[-1]{'vinc'} = '&';
1868: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1869: } else {
1870: $Apache::londefdef::table[-1]{'hinc'} = '';
1871: $Apache::londefdef::table[-1]{'vinc'} = '&';
1872: $Apache::londefdef::table[-1]{'vvinc'} = '';
1873: }
1874: if ($#Apache::londefdef::table==0) {
1875: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1876: }
1877: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1878: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1879: $Apache::londefdef::table[-1]{'objectlen'}=[];
1880: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1881: $Apache::londefdef::table[-1]{'maxlen'}=[];
1882: $Apache::londefdef::table[-1]{'minlen'}=[];
1883: $Apache::londefdef::table[-1]{'content'}=[];
1884: $Apache::londefdef::table[-1]{'align'}=[];
1885: $currentstring='\keephidden{NEW TABLE ENTRY}';
1886: }
1887: return $currentstring;
1888: }
1889:
1890: sub end_table {
1891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1892: my $currentstring = '';
1893: if ($target eq 'web') {
1894: $currentstring = $token->[2];
1895: } elsif ($target eq 'tex') {
1896: my $inmemory = '';
1897: my $output = '';
1898: my $WARNING='';
1899: #width of columns from TeXwidth attributes
1900: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1901: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1902: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1903: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1904: }
1905: }
1906: }
1907: #free space and number of empty columns
1908: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1909: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1910: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1911: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1912: $empty_columns++;
1913: } else {
1914: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1915: }
1916: }
1917: #boundaries for contents columns
1918: my @min_len=();#columns can not be narrower
1919: my @max_len=();#maximum length of column
1920: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1921: my ($localmin,$localmax)=(0,0);
1922: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1923: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1924: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1925: }
1926: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1927: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1928: }
1929: }
1930: push @min_len, $localmin;
1931: push @max_len, $localmax;
1932: }
1933: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1934: my $localmin=0,;
1935: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1936: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1937: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1938: }
1939: }
1940: if ($max_len[$jn]<$localmin) {
1941: $max_len[$jn]=$localmin;
1942: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1943: }#object size is bigger
1944: if ($min_len[$jn]<$localmin) {
1945: $min_len[$jn]=$localmin;
1946: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1947: }#object size is bigger
1948: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1949: $min_len[$jn]=0;
1950: $max_len[$jn]=0;
1951: }
1952: }
1953: #final adjustment of column width
1954: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1955: my @adjust=();
1956: #step 1. adjustment by maximum value
1957: my $space_neeeded=0;
1958: for (my $jn=0;$jn<=$#max_len;$jn++) {
1959: $space_neeeded=$space_neeeded+$max_len[$jn];
1960: }
1961: if ($space_neeeded<=$available_space) {
1962: for (my $jn=0;$jn<=$#max_len;$jn++) {
1963: if ($fwidth[$jn]==0) {
1964: $fwidth[$jn]=$max_len[$jn];
1965: }
1966: }
1967: } else {
1968: #step 2. adjustment by minimum value (estimation)
1969: $space_neeeded=0;
1970: for (my $jn=0;$jn<=$#min_len;$jn++) {
1971: $space_neeeded+=$min_len[$jn];
1972: }
1973: if ($space_neeeded>$available_space) {
1974: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1975: for (my $jn=0;$jn<=$#max_len;$jn++) {
1976: if ($fwidth[$jn]==0) {
1977: $fwidth[$jn]=$min_len[$jn];
1978: }
1979: }
1980: #check if we have objects which can be scaled
1981: my $how_many_to_scale=0;
1982: my @to_scale=();
1983: for (my $jn=0;$jn<=$#max_len;$jn++) {
1984: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1985: $how_many_to_scale++;
1986: push @to_scale, $jn;
1987: }
1988: }
1989: if ($how_many_to_scale>0) {
1990: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1991: foreach my $jn (@to_scale) {
1992: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1993: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1994: if ($1 ne '') {
1995: my $current_length=&recalc($1);
1996: $current_length=~/(\d+\.?\d*)/;
1997: $current_length=$current_length-$space_to_adjust;
1998: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1999: }
2000: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2001: if ($1 ne '') {
2002: my $current_length=$1;
2003: $current_length=$current_length-$space_to_adjust;
2004: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2005: }
2006: }
2007: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2008: }
2009: }
2010: } else {
2011: #step 3. adjustment over minimal + corrections
2012: my $enlarge_coef=$available_space/$space_neeeded;
2013: my $acsessive=0;
2014: for (my $jn=0;$jn<=$#min_len;$jn++) {
2015: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2016: if ($adjust[$jn]>$max_len[$jn]) {
2017: $fwidth[$jn]=$max_len[$jn];
2018: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2019: $adjust[$jn]=0;
2020: }
2021: }
2022: if ($acsessive>0) {
2023: #we have an excess of space and can redistribute it
2024: my $notempty_columns=0;
2025: for (my $jn=0;$jn<=$#min_len;$jn++) {
2026: if ($adjust[$jn]!=0) {
2027: $notempty_columns++;
2028: }
2029: }
2030: my $per_column=$acsessive/$notempty_columns;
2031: for (my $jn=0;$jn<=$#min_len;$jn++) {
2032: if ($adjust[$jn]!=0) {
2033: $adjust[$jn]+=$per_column;
2034: $fwidth[$jn]=$adjust[$jn];
2035: }
2036: }
2037: } else {
2038: for (my $jn=0;$jn<=$#min_len;$jn++) {
2039: $fwidth[$jn]=$adjust[$jn];
2040: }
2041: }
2042: }
2043: }
2044: #use all available width if it is defined in % or as TeXwidth
2045: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2046: my $current=0;
2047: for (my $i=0;$i<=$#fwidth;$i++) {
2048: $current+=$fwidth[$i];
2049: }
2050: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2051: for (my $i=0;$i<=$#fwidth;$i++) {
2052: $fwidth[$i]*=$coef;
2053: }
2054: }
2055: #removing of empty columns if allowed
2056: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2057: if ($permission eq 'yes') {
2058: my @cleaned_table=();
2059: my @cleaned_header=();
2060: my $colind=0;
2061: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2062: if ($fwidth[$jn]!=0) {
2063: #we need to copy column
2064: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2065: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2066: $cleaned_header[$colind]=$fwidth[$jn];
2067: }
2068: $colind++;
2069: }
2070: }
2071: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2072: @fwidth=@cleaned_header;
2073: }
2074: #construct header of the table
2075: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2076: for (my $in=0;$in<=$#fwidth;$in++) {
2077: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2078: }
2079: $header_of_table .= '}';
2080: #fill the table
2081: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2082: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2083: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2084: $output.='\vspace*{-6 mm}\begin{center}';
2085: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2086: $output.=' \hfill \llap{'
2087: }
2088: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2089: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2090: $output.='\end{center}\vspace*{-6 mm}';
2091: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2092: $output.='} ';
2093: }
2094: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2095: }
2096: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2097: }
2098: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2099: if ($#Apache::londefdef::table > 0) {
2100: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2101: pop @Apache::londefdef::table;
2102: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2103: } else {
2104: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2105: pop @Apache::londefdef::table;
2106: undef @Apache::londefdef::table;
2107: }
2108: }
2109: return $currentstring;
2110: }
2111:
2112: #-- <tr> tag (end tag optional)
2113: sub start_tr {
2114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2115: my $currentstring = '';
2116: if ($target eq 'web') {
2117: $currentstring = $token->[4];
2118: } elsif ($target eq 'tex') {
2119: $Apache::londefdef::table[-1]{'row_number'}++;
2120: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2121: if ($alignchar ne '') {
2122: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2123: } else {
2124: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2125: }
2126: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2127: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2128: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2129: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2130: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2131: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2132: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2133: }
2134: return $currentstring;
2135: }
2136:
2137: sub end_tr {
2138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2139: my $currentstring = '';
2140: if ($target eq 'web') {
2141: $currentstring = $token->[2];
2142: } elsif ($target eq 'tex') {
2143: if ($Apache::londefdef::TD_redirection) {
2144: &end_td_tex($parstack,$parser,$safeeval);
2145: }
2146: }
2147: return $currentstring;
2148: }
2149:
2150: #-- <td> tag (end tag optional)
2151: sub start_td {
2152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2153: my $currentstring = '';
2154: if ($target eq 'web') {
2155: $currentstring = $token->[4];
2156: } elsif ($target eq 'tex') {
2157: $Apache::londefdef::TD_redirection = 1;
2158: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2159: }
2160: return $currentstring;
2161: }
2162:
2163: sub tag_check {
2164: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2165: my @ar=@$parstack;
2166: for (my $i=$#ar-1;$i>=0;$i--) {
2167: if (lc($$tagstack[$i]) eq $good_tag) {
2168: &start_td_tex($parstack,$parser,$safeeval);
2169: last;
2170: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2171: splice @ar, $i+1;
2172: &end_td_tex(\@ar,$parser,$safeeval);
2173: &start_td_tex($parstack,$parser,$safeeval);
2174: last;
2175: }
2176: }
2177: return '';
2178: }
2179:
2180: sub start_td_tex {
2181: my ($parstack,$parser,$safeeval) = @_;
2182: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2183: if ($alignchar eq '') {
2184: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2185: }
2186: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2187: $Apache::londefdef::table[-1]{'counter_columns'}++;
2188: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2189: if (defined $TeXwidth) {
2190: my $current_length=&recalc($TeXwidth);
2191: $current_length=~/(\d+\.?\d*)/;
2192: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2193: }
2194: &Apache::lonxml::startredirection();
2195: return '';
2196: }
2197:
2198: sub end_td_tex {
2199: my ($parstack,$parser,$safeeval) = @_;
2200: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2201: my $data=&Apache::lonxml::endredirection();
2202: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2203: if (defined $TeXwidth) {
2204: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2205: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2207: } else {
2208: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2209: my $garbage_data=$data;
2210: my $fwidth=0;
2211: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2212: my $current_length=&recalc($1);
2213: $current_length=~/(\d+\.?\d*)/;
2214: if ($fwidth<$1) {$fwidth=$1;}
2215: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2216: }
2217: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2218: my $current_length=$1;
2219: if ($fwidth<$current_length) {$fwidth=$current_length;}
2220: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2221: }
2222: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2223: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2224: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2225: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2226: } elsif ($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)*/) {
2227: my $garbage_data=$data;
2228: my $fwidth=0;
2229: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2230: my $current_length=&recalc($1);
2231: $current_length=~/(\d+\.?\d*)/;
2232: if ($fwidth<$1) {$fwidth=$1;}
2233: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2234: }
2235: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2236: my $current_length=&recalc($1);
2237: $current_length=~/(\d+\.?\d*)/;
2238: if ($fwidth<$1) {$fwidth=$1;}
2239: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2240: }
2241: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2242: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2243: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2244: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2245: $data=~s/\\\\\s*$//;
2246: } else {
2247: $data=~s/^\s+(\S.*)/$1/;
2248: $data=~s/(.*\S)\s+$/$1/;
2249: $data=~s/(\s)+/$1/;
2250: my ($current_length,$min_length)=(0,0);
2251: if ($data=~/\\vskip/) {
2252: my $newdata=$data;
2253: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2254: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2255: foreach my $elementdata (@newdata) {
2256: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2257: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2258: my @words=split(/ /,$elementdata);
2259: foreach my $word (@words) {
2260: my $lengthword=2.5*&LATEX_length($word);
2261: if ($min_length<$lengthword) {$min_length=$lengthword;}
2262: }
2263: }
2264: } else {
2265: $current_length=2.5*&LATEX_length($data);
2266: my @words=split(/ /,$data);
2267: foreach my $word (@words) {
2268: my $lengthword=2*&LATEX_length($word);
2269: if ($min_length<$lengthword) {$min_length=$lengthword;}
2270: }
2271: }
2272: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2273: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2274: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2275: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2276: }
2277: }
2278: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2279: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2280: }
2281: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2282: return'';
2283: }
2284:
2285: sub end_td {
2286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2287: my $currentstring = '';
2288: if ($target eq 'web') {
2289: $currentstring = $token->[2];
2290: } elsif ($target eq 'tex') {
2291: $Apache::londefdef::TD_redirection =0;
2292: &end_td_tex($parstack,$parser,$safeeval);
2293: }
2294: return $currentstring;
2295: }
2296:
2297: #-- <th> tag (end tag optional)
2298: sub start_th {
2299: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2300: my $currentstring = '';
2301: if ($target eq 'web') {
2302: $currentstring = $token->[4];
2303: } elsif ($target eq 'tex') {
2304: $Apache::londefdef::TD_redirection = 1;
2305: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2306: }
2307: return $currentstring;
2308: }
2309:
2310: sub tagg_check {
2311: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2312: my @ar=@$parstack;
2313: for (my $i=$#ar-1;$i>=0;$i--) {
2314: if (lc($$tagstack[$i]) eq $good_tag) {
2315: &start_th_tex($parstack,$parser,$safeeval);
2316: last;
2317: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2318: splice @ar, $i+1;
2319: &end_th_tex(\@ar,$parser,$safeeval);
2320: &start_th_tex($parstack,$parser,$safeeval);
2321: last;
2322: }
2323: }
2324: return '';
2325: }
2326:
2327: sub start_th_tex {
2328: my ($parstack,$parser,$safeeval) = @_;
2329: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2330: if ($alignchar eq '') {
2331: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2332: }
2333: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2334: $Apache::londefdef::table[-1]{'counter_columns'}++;
2335: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2336: if (defined $TeXwidth) {
2337: my $current_length=&recalc($TeXwidth);
2338: $current_length=~/(\d+\.?\d*)/;
2339: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2340: }
2341: &Apache::lonxml::startredirection();
2342: return '';
2343: }
2344:
2345: sub end_th_tex {
2346: my ($parstack,$parser,$safeeval) = @_;
2347: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2348: my $data=&Apache::lonxml::endredirection();
2349: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2350: if (defined $TeXwidth) {
2351: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2352: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2354: } else {
2355: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2356: my $garbage_data=$data;
2357: my $fwidth=0;
2358: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2359: my $current_length=&recalc($1);
2360: $current_length=~/(\d+\.?\d*)/;
2361: if ($fwidth<$1) {$fwidth=$1;}
2362: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2363: }
2364: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2365: my $current_length=$1;
2366: if ($fwidth<$current_length) {$fwidth=$current_length;}
2367: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2368: }
2369: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2370: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2371: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2372: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: } else {
2374: $data=~s/^\s+(\S.*)/$1/;
2375: $data=~s/(.*\S)\s+$/$1/;
2376: $data=~s/(\s)+/$1/;
2377: my ($current_length,$min_length)=(0,0);
2378: if ($data=~/\\vskip/) {
2379: my $newdata=$data;
2380: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2381: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2382: foreach my $elementdata (@newdata) {
2383: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2384: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2385: my @words=split(/ /,$elementdata);
2386: foreach my $word (@words) {
2387: my $lengthword=2.5*&LATEX_length($word);
2388: if ($min_length<$lengthword) {$min_length=$lengthword;}
2389: }
2390: }
2391: } else {
2392: $current_length=2.5*&LATEX_length($data);
2393: my @words=split(/ /,$data);
2394: foreach my $word (@words) {
2395: my $lengthword=2*&LATEX_length($word);
2396: if ($min_length<$lengthword) {$min_length=$lengthword;}
2397: }
2398: }
2399: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2400: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2401: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2402: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2403: }
2404: }
2405: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2406: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2407: }
2408: #make data bold
2409: $data='\textbf{'.$data.'}';
2410: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2411: return'';
2412: }
2413:
2414: sub end_th {
2415: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2416: my $currentstring = '';
2417: if ($target eq 'web') {
2418: $currentstring = $token->[2];
2419: } elsif ($target eq 'tex') {
2420: $Apache::londefdef::TD_redirection =0;
2421: &end_th_tex($parstack,$parser,$safeeval);
2422: }
2423: return $currentstring;
2424: }
2425:
2426: #-- <img> tag (end tag forbidden)
2427: #
2428: # Render the <IMG> tag.
2429: # <IMG> has the following attributes (in addition to the
2430: # standard HTML ones:
2431: # TeXwrap - Governs how the tex target will try to wrap text around
2432: # horizontally aligned images.
2433: # TeXwidth - The width of the image when rendered for print (mm).
2434: # TeXheight - The height of the image when rendered for print (mm)
2435: # (Note there seems to also be support for this as a % of page size)
2436: #
2437: sub start_img {
2438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2439: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2440: undef,1);
2441: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2442: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2443: return '';
2444: }
2445: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2446: my $currentstring = '';
2447: my $scaling = .3;
2448:
2449: # Render unto browsers that which are the browser's...
2450:
2451: if ($target eq 'web') {
2452: if ($env{'browser.imagesuppress'} ne 'on') {
2453: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2454: } else {
2455: my $alttag= &Apache::lonxml::get_param
2456: ('alt',$parstack,$safeeval,undef,1);
2457: unless ($alttag) {
2458: $alttag=&Apache::lonmeta::alttag
2459: ($Apache::lonxml::pwd[-1],$src);
2460: }
2461: $currentstring.='[IMAGE: '.$alttag.']';
2462: }
2463:
2464: # and render unto TeX that which is LaTeX
2465:
2466: } elsif ($target eq 'tex') {
2467: #
2468: # The alignment will require some superstructure to be put around
2469: # the \includegraphics stuff. At present we can only partially
2470: # simulate the alignments offered by html.
2471: #
2472: #
2473: my $align = lc(&Apache::lonxml::get_param('align',
2474: $parstack,
2475: $safeeval,
2476: undef,1));
2477: if(!$align) {
2478: $align = "bottom"; # This is html's default so it's ours too.
2479: }
2480: #
2481: &Apache::lonxml::debug("Alignemnt = $align");
2482: # LaTeX's image/text wrapping is really bad since it wants to
2483: # make figures float.
2484: # The user has the optional parameter (applicable only to l/r
2485: # alignment to use the picins/parpic directive to get wrapped text
2486: # this is also imperfect.. that's why we give them a choice...
2487: # so they can't yell at us for our choice.
2488: #
2489: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2490: $parstack,
2491: $safeeval,
2492: undef,0);
2493: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2494: if(!$latex_rendering) {
2495: $latex_rendering = "parbox";
2496: }
2497: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2498:
2499: #if original gif/jpg/png file exist do following:
2500: my $origsrc=$src;
2501: my ($path,$file) = &get_eps_image($src);
2502: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2503: &Apache::lonxml::debug("path = $path file = $file src = $src");
2504: if (-e $src) {
2505: &Apache::lonxml::debug("$src exists");
2506: my ($height_param,$width_param)=
2507: &image_size($origsrc,0.3,$parstack,$safeeval);
2508: my $destpath = $path;
2509: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2510: my $destfile = $file;
2511: $destfile =~ s/ /\_/g;
2512: my $size;
2513: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2514: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2515: $size='['.$size;
2516: $size=~s/,$/]/;
2517: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2518: .'\includegraphics'.$size.'{'.$destfile.'} ';
2519:
2520: # If there's an alignment specification we need to honor it here.
2521: # For the horizontal alignments, we will also honor the
2522: # value of the latex specfication. The default is parbox,
2523: # and that's used for illegal values too.
2524: #
2525: # Even though we set a default alignment value, the user
2526: # could have given us an illegal value. In that case we
2527: # just use the default alignment of bottom..
2528: if ($align eq "top") {
2529: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2530: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2531: my $offset = $height_param/2;
2532: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2533: } elsif ($align eq "left") {
2534: if ($latex_rendering eq "parpic") {
2535: $currentstring = '\parpic[l]{'.$currentstring.'}';
2536: } else { # parbox rendering
2537: $currentstring = "\\strut\\newline\n".
2538: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2539: }
2540: } elsif ($align eq "right") {
2541: if ($latex_rendering eq "parpic") {
2542: $currentstring = '\parpic[r]{'.$currentstring.'}';
2543: } else { # parbox rendering.
2544: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2545: .$currentstring.'\end{flushright}} \newline'."\n";
2546: }
2547: } else { # Bottom is also default.
2548: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2549: }
2550: } else {
2551: &Apache::lonxml::debug("$src does not exist");
2552: #original image file doesn't exist so check the alt attribute
2553: my $alt =
2554: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2555: unless ($alt) {
2556: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2557: }
2558:
2559: if ($alt) { $currentstring .= ' '.$alt.' '; }
2560: }
2561:
2562: # And here's where the semi-quote breaks down: allow the user
2563: # to edit the beast as well by rendering the problem for edit:
2564: } elsif ($target eq 'edit') {
2565: $currentstring .=&Apache::edit::tag_start($target,$token);
2566: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2567: &Apache::edit::browse('src',undef,'alt').' '.
2568: &Apache::edit::search('src',undef,'alt').'<br />';
2569: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2570: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2571: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2572: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2573: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2574: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2575: ['','bottom','middle','top','left','right'],$token,5);
2576: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2577: ['', 'parbox', 'parpic'], $token, 2);
2578: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2579: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2580: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2581: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2582: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2583:
2584:
2585: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2586: if ($width) { $currentstring.=' width="'.$width.'" '; }
2587: if ($height) { $currentstring.=' height="'.$height.'" '; }
2588: $currentstring .= ' />';
2589: } elsif ($target eq 'modified') {
2590: my ($osrc,$owidth,$oheight)=
2591: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2592: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2593: $safeeval,'src','alt','align',
2594: 'TeXwidth','TeXheight', 'TeXwrap',
2595: 'width','height');
2596: my ($nsrc,$nwidth,$nheight)=
2597: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2598: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2599: &image_replication($loc);
2600: my ($iwidth,$iheight);
2601: if (-e $loc) {
2602: my $image = Image::Magick->new;
2603: $image->Read($loc);
2604: ($iwidth, $iheight) = ($image->Get('width'),
2605: $image->Get('height'));
2606: }
2607: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2608: # changed image or no size specified,
2609: # if they didn't explicitly change the
2610: # width or height use the ones from the image
2611: if ($iwidth && $iheight) {
2612: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2613: $token->[2]{'width'} = $iwidth;$ctag=1;
2614: }
2615: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2616: $token->[2]{'height'}=$iheight;$ctag=1;
2617: }
2618: }
2619: }
2620: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2621: # if we don't have a width or height
2622: if ($iwidth && $cwidth && !$cheight) {
2623: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2624: }
2625: if ($iheight && $cheight && !$cwidth) {
2626: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2627: }
2628: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2629: }
2630:
2631: return $currentstring;
2632: }
2633:
2634: sub end_img {
2635: my ($target,$token) = @_;
2636: my $currentstring = '';
2637: if ($target eq 'web') {
2638: $currentstring = $token->[2];
2639: } elsif ($target eq 'tex') {
2640: $currentstring = '';
2641: }
2642: return $currentstring;
2643: }
2644:
2645: #-- <applet> tag (end tag required)
2646: sub start_applet {
2647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2648:
2649: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2650: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2651:
2652: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2653: undef,1);
2654: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2655:
2656: my $currentstring = '';
2657: if ($target eq 'web') {
2658: if ($env{'browser.appletsuppress'} ne 'on') {
2659: $currentstring = &Apache::lonenc::encrypt_ref($token,
2660: {'code'=>$code,
2661: 'archive'=>$archive}
2662: );
2663: } else {
2664: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2665: $safeeval,undef,1);
2666: unless ($alttag) {
2667: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2668: $code);
2669: }
2670: $currentstring='[APPLET: '.$alttag.']';
2671: }
2672: } elsif ($target eq 'tex') {
2673: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2674: $safeeval,undef,1);
2675: unless ($alttag) {
2676: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2677: undef,1);
2678: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2679: $code);
2680: }
2681: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2682: '.}\end{center}';
2683: }
2684: return $currentstring;
2685: }
2686:
2687: sub end_applet {
2688: my ($target,$token) = @_;
2689: my $currentstring = '';
2690: if ($target eq 'web') {
2691: $currentstring = $token->[2];
2692: } elsif ($target eq 'tex') {
2693: }
2694: return $currentstring;
2695: }
2696:
2697: #-- <embed> tag (end tag optional/required)
2698: sub start_embed {
2699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2700: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2701: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2702: my $currentstring = '';
2703: if ($target eq 'web') {
2704: if ($env{'browser.embedsuppress'} ne 'on') {
2705: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2706: } else {
2707: my $alttag=&Apache::lonxml::get_param
2708: ('alt',$parstack,$safeeval,undef,1);
2709: unless ($alttag) {
2710: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2711: }
2712: $currentstring='[EMBED: '.$alttag.']';
2713: }
2714: } elsif ($target eq 'tex') {
2715: }
2716: return $currentstring;
2717: }
2718:
2719: sub end_embed {
2720: my ($target,$token) = @_;
2721: my $currentstring = '';
2722: if ($target eq 'web') {
2723: $currentstring = $token->[2];
2724: } elsif ($target eq 'tex') {
2725: }
2726: return $currentstring;
2727: }
2728:
2729: #-- <param> tag (end tag forbidden)
2730: sub start_param {
2731: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2732: if (&Apache::lonxml::get_param
2733: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2734: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2735: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2736: }
2737: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2738: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2739: my $currentstring = '';
2740: if ($target eq 'web') {
2741: my %toconvert;
2742: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2743: if ($src) { $toconvert{'src'}= $src; }
2744: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2745: undef,1);
2746: if ($name=~/^cabbase$/i) {
2747: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2748: $safeeval,undef,1);
2749: }
2750: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2751: } elsif ($target eq 'tex') {
2752: }
2753: return $currentstring;
2754: }
2755:
2756: sub end_param {
2757: my ($target,$token) = @_;
2758: my $currentstring = '';
2759: if ($target eq 'web') {
2760: $currentstring = $token->[2];
2761: } elsif ($target eq 'tex') {
2762: }
2763: return $currentstring;
2764: }
2765:
2766: #-- <allow> tag
2767: sub start_allow {
2768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2769: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2770: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2771: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2772: &Apache::lonnet::clutter($src);
2773: if ($target eq 'tex') { &image_replication($src); }
2774: my $result;
2775: if ($target eq 'edit') {
2776: $result .=&Apache::edit::tag_start($target,$token);
2777: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2778: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2779: } elsif ($target eq 'modified') {
2780: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2781: $safeeval,'src');
2782: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2783: }
2784: return $result;
2785: }
2786:
2787: sub end_allow {
2788: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2789: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2790: return '';
2791: }
2792:
2793: #-- Frames (end tag required)
2794: #-- <frameset>
2795: sub start_frameset {
2796: my ($target,$token) = @_;
2797: my $currentstring = '';
2798: if ($target eq 'web') {
2799: if (!$Apache::lonxml::registered &&
2800: $env{'request.state'} eq 'published') {
2801: $currentstring.='<head>'.
2802: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2803: }
2804: my $onLoad='';
2805: foreach my $key (keys(%{$token->[2]})) {
2806: if ($key =~ /^onload$/i) {
2807: $onLoad.=$token->[2]->{$key}.';';
2808: delete($token->[2]->{$key});
2809: }
2810: }
2811: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2812: my $onUnload='';
2813: foreach my $key (keys(%{$token->[2]})) {
2814: if ($key =~ /^onunload$/i) {
2815: $onUnload.=$token->[2]->{$key}.';';
2816: delete($token->[2]->{$key});
2817: }
2818: }
2819: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2820: ';'.$onUnload;
2821:
2822: $currentstring .= '<'.$token->[1];
2823: foreach (keys %{$token->[2]}) {
2824: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2825: }
2826: $currentstring.='>';
2827: }
2828: return $currentstring;
2829: }
2830:
2831: sub end_frameset {
2832: my ($target,$token) = @_;
2833: my $currentstring = '';
2834: if ($target eq 'web') {
2835: $currentstring = $token->[2];
2836: }
2837: return $currentstring;
2838: }
2839:
2840: #-- <xmp> (end tag required)
2841: sub start_xmp {
2842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2843: my $currentstring = '';
2844: if ($target eq 'web') {
2845: $currentstring .= $token->[4];
2846: } elsif ($target eq 'tex') {
2847: $currentstring .= '\begin{verbatim}';
2848: }
2849: return $currentstring;
2850: }
2851:
2852: sub end_xmp {
2853: my ($target,$token) = @_;
2854: my $currentstring = '';
2855: if ($target eq 'web') {
2856: $currentstring .= $token->[2];
2857: } elsif ($target eq 'tex') {
2858: $currentstring .= '\end{verbatim}';
2859: }
2860: return $currentstring;
2861: }
2862:
2863: #-- <pre> (end tag required)
2864: sub start_pre {
2865: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2866: my $currentstring = '';
2867: if ($target eq 'web') {
2868: $currentstring .= $token->[4];
2869: } elsif ($target eq 'tex') {
2870: $currentstring .= '\begin{verbatim}';
2871: }
2872: return $currentstring;
2873: }
2874:
2875: sub end_pre {
2876: my ($target,$token) = @_;
2877: my $currentstring = '';
2878: if ($target eq 'web') {
2879: $currentstring .= $token->[2];
2880: } elsif ($target eq 'tex') {
2881: $currentstring .= '\end{verbatim}';
2882: }
2883: return $currentstring;
2884: }
2885:
2886: #-- <insert>
2887: sub start_insert {
2888: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2889: my $currentstring = '';
2890: if ($target eq 'web') {
2891: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2892: $currentstring .= '<b>'.$display.'</b>';;
2893: }
2894: return $currentstring;
2895: }
2896:
2897: sub end_insert {
2898: my ($target,$token) = @_;
2899: my $currentstring = '';
2900: if ($target eq 'web') {
2901: $currentstring .= '';
2902: }
2903: return $currentstring;
2904: }
2905:
2906: #-- <externallink>
2907: sub start_externallink {
2908: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2909: my $currentstring = '';
2910: if ($target eq 'web') {
2911: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2912: $currentstring .= '<b>'.$display.'</b>';;
2913: }
2914: return $currentstring;
2915: }
2916:
2917: sub end_externallink {
2918: my ($target,$token) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: $currentstring .= '';
2922: }
2923: return $currentstring;
2924: }
2925:
2926: #-- <blankspace heigth="">
2927: sub start_blankspace {
2928: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'tex') {
2931: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2932: $currentstring .= '\vskip '.$howmuch.' ';
2933: }
2934: return $currentstring;
2935: }
2936:
2937: sub end_blankspace {
2938: my ($target,$token) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'tex') {
2941: $currentstring .= '';
2942: }
2943: return $currentstring;
2944: }
2945:
2946: #-- <abbr> tag (end tag required)
2947: sub start_abbr {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'web') {
2951: $currentstring = $token->[4];
2952: }
2953: return $currentstring;
2954: }
2955:
2956: sub end_abbr {
2957: my ($target,$token) = @_;
2958: my $currentstring = '';
2959: if ($target eq 'web') {
2960: $currentstring = $token->[2];
2961: }
2962: return $currentstring;
2963: }
2964:
2965: #-- <acronym> tag (end tag required)
2966: sub start_acronym {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[4];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: sub end_acronym {
2976: my ($target,$token) = @_;
2977: my $currentstring = '';
2978: if ($target eq 'web') {
2979: $currentstring = $token->[2];
2980: }
2981: return $currentstring;
2982: }
2983:
2984: #-- <area> tag (end tag forbidden)
2985: sub start_area {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[4];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: sub end_area {
2995: my ($target,$token) = @_;
2996: my $currentstring = '';
2997: if ($target eq 'web') {
2998: $currentstring = $token->[2];
2999: }
3000: return $currentstring;
3001: }
3002:
3003: #-- <base> tag (end tag forbidden)
3004: sub start_base {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[4];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: sub end_base {
3014: my ($target,$token) = @_;
3015: my $currentstring = '';
3016: if ($target eq 'web') {
3017: $currentstring = $token->[2];
3018: }
3019: return $currentstring;
3020: }
3021:
3022: #-- <bdo> tag (end tag required)
3023: sub start_bdo {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[4];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: sub end_bdo {
3033: my ($target,$token) = @_;
3034: my $currentstring = '';
3035: if ($target eq 'web') {
3036: $currentstring = $token->[2];
3037: }
3038: return $currentstring;
3039: }
3040:
3041: #-- <bgsound> tag (end tag optional)
3042: sub start_bgsound {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[4];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: sub end_bgsound {
3052: my ($target,$token) = @_;
3053: my $currentstring = '';
3054: if ($target eq 'web') {
3055: $currentstring = $token->[2];
3056: }
3057: return $currentstring;
3058: }
3059:
3060: #-- <blink> tag (end tag required)
3061: sub start_blink {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[4];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: sub end_blink {
3071: my ($target,$token) = @_;
3072: my $currentstring = '';
3073: if ($target eq 'web') {
3074: $currentstring = $token->[2];
3075: }
3076: return $currentstring;
3077: }
3078:
3079: #-- <blockquote> tag (end tag required)
3080: sub start_blockquote {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[4];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: sub end_blockquote {
3090: my ($target,$token) = @_;
3091: my $currentstring = '';
3092: if ($target eq 'web') {
3093: $currentstring = $token->[2];
3094: }
3095: return $currentstring;
3096: }
3097:
3098: #-- <button> tag (end tag required)
3099: sub start_button {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[4];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: sub end_button {
3109: my ($target,$token) = @_;
3110: my $currentstring = '';
3111: if ($target eq 'web') {
3112: $currentstring = $token->[2];
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <caption> tag (end tag required)
3118: sub start_caption {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[4];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: sub end_caption {
3128: my ($target,$token) = @_;
3129: my $currentstring = '';
3130: if ($target eq 'web') {
3131: $currentstring = $token->[2];
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <col> tag (end tag forbdden)
3137: sub start_col {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[4];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: sub end_col {
3147: my ($target,$token) = @_;
3148: my $currentstring = '';
3149: if ($target eq 'web') {
3150: $currentstring = $token->[2];
3151: }
3152: return $currentstring;
3153: }
3154:
3155: #-- <colgroup> tag (end tag optional)
3156: sub start_colgroup {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[4];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: sub end_colgroup {
3166: my ($target,$token) = @_;
3167: my $currentstring = '';
3168: if ($target eq 'web') {
3169: $currentstring = $token->[2];
3170: }
3171: return $currentstring;
3172: }
3173:
3174: #-- <del> tag (end tag required)
3175: sub start_del {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[4];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: sub end_del {
3185: my ($target,$token) = @_;
3186: my $currentstring = '';
3187: if ($target eq 'web') {
3188: $currentstring = $token->[2];
3189: }
3190: return $currentstring;
3191: }
3192:
3193: #-- <fieldset> tag (end tag required)
3194: sub start_fieldset {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[4];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_fieldset {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: $currentstring = $token->[2];
3208: }
3209: return $currentstring;
3210: }
3211:
3212: #-- <frame> tag (end tag forbidden)
3213: sub start_frame {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[4];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: sub end_frame {
3223: my ($target,$token) = @_;
3224: my $currentstring = '';
3225: if ($target eq 'web') {
3226: $currentstring = $token->[2];
3227: }
3228: return $currentstring;
3229: }
3230:
3231: #-- <iframe> tag (end tag required)
3232: sub start_iframe {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[4];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: sub end_iframe {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web') {
3245: $currentstring = $token->[2];
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <ins> tag (end tag required)
3251: sub start_ins {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[4];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: sub end_ins {
3261: my ($target,$token) = @_;
3262: my $currentstring = '';
3263: if ($target eq 'web') {
3264: $currentstring = $token->[2];
3265: }
3266: return $currentstring;
3267: }
3268:
3269: #-- <isindex> tag (end tag forbidden)
3270: sub start_isindex {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[4];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: sub end_isindex {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web') {
3283: $currentstring = $token->[2];
3284: }
3285: return $currentstring;
3286: }
3287:
3288: #-- <keygen> tag (end tag forbidden)
3289: sub start_keygen {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[4];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: sub end_keygen {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web') {
3302: $currentstring = $token->[2];
3303: }
3304: return $currentstring;
3305: }
3306:
3307: #-- <label> tag
3308: sub start_label {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[4];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: sub end_label {
3318: my ($target,$token) = @_;
3319: my $currentstring = '';
3320: if ($target eq 'web') {
3321: $currentstring = $token->[2];
3322: }
3323: return $currentstring;
3324: }
3325:
3326: #-- <layer> tag (end tag required)
3327: sub start_layer {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[4];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: sub end_layer {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web') {
3340: $currentstring = $token->[2];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: #-- <legend> tag (end tag required)
3346: sub start_legend {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[4];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: sub end_legend {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web') {
3359: $currentstring = $token->[2];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: #-- <link> tag (end tag forbidden)
3365: sub start_link {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[4];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: sub end_link {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web') {
3378: $currentstring = $token->[2];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: #-- <marquee> tag (end tag optional)
3384: sub start_marquee {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[4];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: sub end_marquee {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web') {
3397: $currentstring = $token->[2];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: #-- <multicol> tag (end tag required)
3403: sub start_multicol {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[4];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: sub end_multicol {
3413: my ($target,$token) = @_;
3414: my $currentstring = '';
3415: if ($target eq 'web') {
3416: $currentstring = $token->[2];
3417: }
3418: return $currentstring;
3419: }
3420:
3421: #-- <nobr> tag (end tag required)
3422: sub start_nobr {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[4];
3427: } elsif ($target eq 'tex') {
3428: $currentstring='\mbox{';
3429: }
3430: return $currentstring;
3431: }
3432:
3433: sub end_nobr {
3434: my ($target,$token) = @_;
3435: my $currentstring = '';
3436: if ($target eq 'web') {
3437: $currentstring = $token->[2];
3438: } elsif ($target eq 'tex') {
3439: $currentstring='}';
3440: }
3441: return $currentstring;
3442: }
3443:
3444: #-- <noembed> tag (end tag required)
3445: sub start_noembed {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web') {
3449: $currentstring = $token->[4];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: sub end_noembed {
3455: my ($target,$token) = @_;
3456: my $currentstring = '';
3457: if ($target eq 'web') {
3458: $currentstring = $token->[2];
3459: }
3460: return $currentstring;
3461: }
3462:
3463: #-- <noframes> tag (end tag required)
3464: sub start_noframes {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web') {
3468: $currentstring = $token->[4];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: sub end_noframes {
3474: my ($target,$token) = @_;
3475: my $currentstring = '';
3476: if ($target eq 'web') {
3477: $currentstring = $token->[2];
3478: }
3479: return $currentstring;
3480: }
3481:
3482: #-- <nolayer> tag (end tag required)
3483: sub start_nolayer {
3484: my ($target,$token) = @_;
3485: my $currentstring = '';
3486: if ($target eq 'web') {
3487: $currentstring = $token->[4];
3488: }
3489: return $currentstring;
3490: }
3491:
3492: sub end_nolayer {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web') {
3496: $currentstring = $token->[2];
3497: }
3498: return $currentstring;
3499: }
3500:
3501: #-- <noscript> tag (end tag required)
3502: sub start_noscript {
3503: my ($target,$token) = @_;
3504: my $currentstring = '';
3505: if ($target eq 'web') {
3506: $currentstring = $token->[4];
3507: }
3508: return $currentstring;
3509: }
3510:
3511: sub end_noscript {
3512: my ($target,$token) = @_;
3513: my $currentstring = '';
3514: if ($target eq 'web') {
3515: $currentstring = $token->[2];
3516: }
3517: return $currentstring;
3518: }
3519:
3520: #-- <object> tag (end tag required)
3521: sub start_object {
3522: my ($target,$token) = @_;
3523: my $currentstring = '';
3524: if ($target eq 'web') {
3525: $currentstring = $token->[4];
3526: }
3527: return $currentstring;
3528: }
3529:
3530: sub end_object {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web') {
3534: $currentstring = $token->[2];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: #-- <optgroup> tag (end tag required)
3540: sub start_optgroup {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web') {
3544: $currentstring = $token->[4];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: sub end_optgroup {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web') {
3553: $currentstring = $token->[2];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: #-- <samp> tag (end tag required)
3559: sub start_samp {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web') {
3563: $currentstring = $token->[4];
3564: } elsif ($target eq 'tex') {
3565: $currentstring='\texttt{';
3566: }
3567: return $currentstring;
3568: }
3569:
3570: sub end_samp {
3571: my ($target,$token) = @_;
3572: my $currentstring = '';
3573: if ($target eq 'web') {
3574: $currentstring = $token->[2];
3575: } elsif ($target eq 'tex') {
3576: $currentstring='}';
3577: }
3578: return $currentstring;
3579: }
3580:
3581: #-- <server> tag
3582: sub start_server {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web') {
3586: $currentstring = $token->[4];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: sub end_server {
3592: my ($target,$token) = @_;
3593: my $currentstring = '';
3594: if ($target eq 'web') {
3595: $currentstring = $token->[2];
3596: }
3597: return $currentstring;
3598: }
3599:
3600: #-- <spacer> tag (end tag forbidden)
3601: sub start_spacer {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web') {
3605: $currentstring = $token->[4];
3606: }
3607: return $currentstring;
3608: }
3609:
3610: sub end_spacer {
3611: my ($target,$token) = @_;
3612: my $currentstring = '';
3613: if ($target eq 'web') {
3614: $currentstring = $token->[2];
3615: }
3616: return $currentstring;
3617: }
3618:
3619: #-- <span> tag (end tag required)
3620: sub start_span {
3621: my ($target,$token) = @_;
3622: my $currentstring = '';
3623: if ($target eq 'web') {
3624: $currentstring = $token->[4];
3625: }
3626: return $currentstring;
3627: }
3628:
3629: sub end_span {
3630: my ($target,$token) = @_;
3631: my $currentstring = '';
3632: if ($target eq 'web') {
3633: $currentstring = $token->[2];
3634: }
3635: return $currentstring;
3636: }
3637:
3638: #-- <tbody> tag (end tag optional)
3639: sub start_tbody {
3640: my ($target,$token) = @_;
3641: my $currentstring = '';
3642: if ($target eq 'web') {
3643: $currentstring = $token->[4];
3644: }
3645: return $currentstring;
3646: }
3647:
3648: sub end_tbody {
3649: my ($target,$token) = @_;
3650: my $currentstring = '';
3651: if ($target eq 'web') {
3652: $currentstring = $token->[2];
3653: }
3654: return $currentstring;
3655: }
3656:
3657: #-- <tfoot> tag (end tag optional)
3658: sub start_tfoot {
3659: my ($target,$token) = @_;
3660: my $currentstring = '';
3661: if ($target eq 'web') {
3662: $currentstring = $token->[4];
3663: }
3664: return $currentstring;
3665: }
3666:
3667: sub end_tfoot {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web') {
3671: $currentstring = $token->[2];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: #-- <thead> tag (end tag optional)
3677: sub start_thead {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web') {
3681: $currentstring = $token->[4];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: sub end_thead {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web') {
3690: $currentstring = $token->[2];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: #-- <var> tag
3696: sub start_var {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web') {
3700: $currentstring = $token->[4];
3701: } elsif ($target eq 'tex') {
3702: $currentstring = '\textit{';
3703: }
3704: return $currentstring;
3705: }
3706:
3707: sub end_var {
3708: my ($target,$token) = @_;
3709: my $currentstring = '';
3710: if ($target eq 'web') {
3711: $currentstring = $token->[2];
3712: } elsif ($target eq 'tex') {
3713: $currentstring = '}';
3714: }
3715: return $currentstring;
3716: }
3717:
3718: #-- <wbr> tag (end tag forbidden)
3719: sub start_wbr {
3720: my ($target,$token) = @_;
3721: my $currentstring = '';
3722: if ($target eq 'web') {
3723: $currentstring = $token->[4];
3724: }
3725: return $currentstring;
3726: }
3727:
3728: sub end_wbr {
3729: my ($target,$token) = @_;
3730: my $currentstring = '';
3731: if ($target eq 'web') {
3732: $currentstring = $token->[2];
3733: }
3734: return $currentstring;
3735: }
3736:
3737: #-- <hideweboutput> tag
3738: sub start_hideweboutput {
3739: my ($target,$token) = @_;
3740: if ($target eq 'web') {
3741: &Apache::lonxml::startredirection();
3742: }
3743: return '';
3744: }
3745:
3746: sub end_hideweboutput {
3747: my ($target,$token) = @_;
3748: my $currentstring = '';
3749: if ($target eq 'web') {
3750: $currentstring = &Apache::lonxml::endredirection();
3751: }
3752: return '';
3753: }
3754:
3755:
3756: sub image_replication {
3757: my $src = shift;
3758: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3759: #replicates eps or ps
3760: my $epssrc = my $pssrc = $src;
3761: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3762: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3763: if (not -e $epssrc && not -e $pssrc) {
3764: my $result=&Apache::lonnet::repcopy($epssrc);
3765: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
3766: }
3767: return '';
3768: }
3769: #
3770: # Get correct sizing parameter for an image given
3771: # it's initial ht. and wid. This allows sizing of
3772: # images that are generated on-the-fly (e.g. gnuplot)
3773: # as well as serving as a utility for image_size.
3774: #
3775: # Parameter:
3776: # height_param
3777: # width_param - Initial picture dimensions.
3778: # scaling - A scale factor.
3779: # parstack, - the current stack of tag attributes
3780: # from the xml parser
3781: # safeeval, - pointer to the safespace
3782: # depth, - from what level in the stack to look for attributes
3783: # (assumes -1 if unspecified)
3784: # cis - look for attrubutes case insensitively
3785: # (assumes false)
3786: #
3787: # Returns:
3788: # height, width - new dimensions.
3789: #
3790: sub resize_image {
3791: my ($height_param, $width_param, $scaling,
3792: $parstack, $safeeval, $depth, $cis) = @_;
3793:
3794: # First apply the scaling...
3795:
3796: $height_param = $height_param * $scaling;
3797: $width_param = $width_param * $scaling;
3798:
3799: #do we have any specified LaTeX size of the picture?
3800: my $toget='TeXwidth';
3801: if ($cis) {
3802: $toget=lc($toget);
3803: }
3804: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3805: $safeeval,$depth,$cis);
3806: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3807: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3808: $safeeval,$depth,$cis);
3809: #do we have any specified web size of the picture?
3810: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3811: $depth,1);
3812: if ($TeXwidth) {
3813: my $old_width_param=$width_param;
3814: if ($TeXwidth=~/(\d+)\s*\%/) {
3815: $width_param = $1*$env{'form.textwidth'}/100;
3816: } else {
3817: $width_param = $TeXwidth;
3818: }
3819: if ($TeXheight) {
3820: $height_param = $TeXheight;
3821: } elsif ($old_width_param) {
3822: $height_param=$TeXwidth/$old_width_param*$height_param;
3823: }
3824: } elsif ($TeXheight) {
3825: $height_param = $TeXheight;
3826: if ($height_param) {
3827: $width_param = $TeXheight/$height_param*$width_param;
3828: }
3829: } elsif ($width) {
3830: my $old_width_param=$width_param;
3831: $width_param = $width*$scaling;
3832: if ($old_width_param) {
3833: $height_param=$width_param/$old_width_param*$height_param;
3834: }
3835: }
3836: if ($width_param > $env{'form.textwidth'}) {
3837: my $old_width_param=$width_param;
3838: $width_param =0.95*$env{'form.textwidth'};
3839: if ($old_width_param) {
3840: $height_param=$width_param/$old_width_param*$height_param;
3841: }
3842: }
3843:
3844: return ($height_param, $width_param);
3845: }
3846:
3847: sub image_size {
3848: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3849:
3850: #size of image from gif/jpg/jpeg/png
3851: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3852: if (-e $ressrc) {
3853: $src = $ressrc;
3854: }
3855: my $image = Image::Magick->new;
3856: my $current_figure = $image->Read($src);
3857: my $width_param = $image->Get('width');
3858: my $height_param = $image->Get('height');
3859: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
3860: undef($image);
3861:
3862: ($height_param, $width_param) = &resize_image($height_param, $width_param,
3863: $scaling, $parstack, $safeeval,
3864: $depth, $cis);
3865:
3866: return ($height_param, $width_param);
3867: }
3868:
3869: sub image_width {
3870: my ($height, $width) = &image_size(@_);
3871: return $width;
3872: }
3873: # Not yet 100% sure this is correct in all circumstances..
3874: # due to my uncertainty about mods to image_size.
3875: #
3876: sub image_height {
3877: my ($height, $width) = &image_size(@_);
3878: return $height;
3879: }
3880:
3881: sub get_eps_image {
3882: my ($src)=@_;
3883: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
3884: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
3885: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3886: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3887: &Apache::lonxml::debug("Filelocation gives: $src");
3888: if (! -e $src) {
3889: &Apache::lonxml::debug("$src does not exist");
3890: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
3891: &Apache::lonxml::debug("Repcopy of $src failed (1)");
3892: #if replication failed try to find ps file
3893: $src=~s/\.eps$/\.ps/;
3894: &Apache::lonxml::debug("Now looking for $src");
3895: #if no ps file try to replicate it.
3896: my $didrepcopy = &Apache::lonnet::repcopy($src);
3897: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
3898: if ( (not -e $src) ||
3899: ($didrepcopy ne 'ok')) {
3900: &Apache::lonxml::debug("Failed to find or replicate $src");
3901:
3902: #if replication failed try to produce eps file dynamically
3903: $src=~s/\.ps$/\.eps/;
3904: my $temp_file;
3905: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
3906: my $newsrc=$orig_src;
3907: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
3908: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
3909: print FILE "$newsrc\n";
3910: close FILE;
3911: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
3912: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
3913: }
3914: }
3915: }
3916: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
3917: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
3918: return ($path.'/',$file);
3919: }
3920:
3921: sub eps_generation {
3922: my ($src,$file,$width_param) = @_;
3923: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
3924: my $temp_file = Apache::File->new('>>'.$filename);
3925: print $temp_file "$src\n";
3926: my $newsrc = $src;
3927: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3928: $newsrc=~s/\/home\/httpd\/html\/res//;
3929: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3930: $newsrc=~s/\/\.\//\//;
3931: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3932: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3933: $newsrc=~s/\/home\/httpd\/lonUsers//;
3934: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3935: }
3936: if ($newsrc=~/\/userfiles\//) {
3937: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3938: } else {
3939: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3940: }
3941: }
3942:
3943: sub file_path {
3944: my $src=shift;
3945: my ($file,$path);
3946: if ($src =~ m!(.*)/([^/]*)$!) {
3947: $file = $2;
3948: $path = $1.'/';
3949: }
3950: return $file,$path;
3951: }
3952:
3953: sub recalc {
3954: my $argument = shift;
3955: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3956: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3957: my $value=$1;
3958: my $units=$2;
3959: if ($units eq 'cm') {
3960: $value*=10;
3961: } elsif ($units eq 'in') {
3962: $value*=25.4;
3963: } elsif ($units eq 'pc') {
3964: $value*=(25.4*12/72.27);
3965: } elsif ($units eq 'pt') {
3966: $value*=(25.4/72.27);
3967: }
3968: return $value.' mm';
3969: }
3970:
3971: sub LATEX_length {
3972: my $garbage=shift;
3973: $garbage=~s/^\s+$//;
3974: $garbage=~s/^\s+(\S.*)/$1/;#space before
3975: $garbage=~s/(.*\S)\s+$/$1/;#space after
3976: $garbage=~s/(\s)+/$1/;#only one space
3977: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3978: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3979: $garbage=~s/([^\\])\$/$1/g;#$
3980: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3981: $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;
3982: $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;
3983: $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;
3984: $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;
3985: $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;
3986: $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;
3987: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3988: #remove some other LaTeX command
3989: $garbage=~s|\\(\w+)\\|\\|g;
3990: $garbage=~s|\\(\w+)(\s*)|$2|g;
3991: $garbage=~s|\+|11|g;
3992: my $value=length($garbage);
3993: return $value;
3994: }
3995:
3996:
3997:
3998:
3999: 1;
4000: __END__
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