1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.259 2005/03/01 03:21:58 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet();
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50:
51:
52: BEGIN {
53:
54: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
55:
56: }
57:
58: sub initialize_londefdef {
59: $Apache::londefdef::TD_redirection=0;
60: @Apache::londefdef::table = ();
61: $Apache::londefdef::select=0;
62: undef(@Apache::londefdef::description);
63: @Apache::londefdef::DD=(0);
64: @Apache::londefdef::DT=(0);
65: @Apache::londefdef::seenDT=(0);
66: $Apache::londefdef::list_index=0;
67: }
68:
69: #======================= TAG SUBROUTINES =====================
70: #-- <output>
71: sub start_output {
72: my ($target) = @_;
73: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
74: return '';
75: }
76: sub end_output {
77: my ($target) = @_;
78: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
79: return '';
80: }
81: #-- <m> tag
82: sub start_m {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
84: my $currentstring = '';
85: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
86: if ($target eq 'web' || $target eq 'analyze') {
87: &Apache::lonxml::debug("M is starting with:$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') {
157: $currentstring = &Apache::lonxml::xmlbegin();
158: } elsif ($target eq 'tex') {
159: @Apache::londefdef::table = ();
160: $currentstring .= '\documentclass[letterpaper]{article}';
161: if (($ENV{'form.latex_type'}=~'batchmode') ||
162: (!$ENV{'request.role.adv'})) {$currentstring .='\batchmode';}
163: $currentstring .= '\newcommand{\keephidden}[1]{}'.
164: '\renewcommand{\deg}{$^{\circ}$}'.
165: '\usepackage{longtable}'.
166: '\usepackage{textcomp}'.
167: '\usepackage{makeidx}'.
168: '\usepackage[dvips]{graphicx}'.
169: '\usepackage{picins}'.
170: '\usepackage{epsfig}'.
171: '\usepackage{calc}'.
172: '\usepackage{amsmath}'.
173: '\usepackage{amssymb}'.
174: '\usepackage{amsfonts}'.
175: '\usepackage{amsthm}'.
176: '\usepackage{amscd}'.
177: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
178: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
179: }
180: return $currentstring;
181: }
182:
183: sub end_html {
184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
185: my $currentstring = '';
186: if ($target eq 'web') {
187: $currentstring = '</html>';
188: }
189: return $currentstring;
190: }
191:
192: #-- <head> tag (end tag optional)
193: sub start_head {
194: my ($target,$token) = @_;
195: my $currentstring = '';
196: if ($target eq 'web') {
197: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
198: }
199: return $currentstring;
200: }
201:
202: sub end_head {
203: my ($target,$token) = @_;
204: my $currentstring = '';
205: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
206: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
207: $token->[2];
208: }
209: return $currentstring;
210: }
211:
212: #-- <map> tag (end tag required)
213: sub start_map {
214: my ($target,$token) = @_;
215: my $currentstring = '';
216: if ($target eq 'web') {
217: $currentstring = $token->[4];
218: }
219: return $currentstring;
220: }
221:
222: sub end_map {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web') {
226: $currentstring = $token->[2];
227: }
228: return $currentstring;
229: }
230:
231: #-- <select> tag (end tag required)
232: sub start_select {
233: my ($target,$token) = @_;
234: my $currentstring = '';
235: if ($target eq 'web') {
236: $currentstring = $token->[4];
237: } elsif ($target eq 'tex') {
238: $Apache::londefdef::select=0;
239: }
240: return $currentstring;
241: }
242:
243: sub end_select {
244: my ($target,$token) = @_;
245: my $currentstring = '';
246: if ($target eq 'web') {
247: $currentstring = $token->[2];
248: }
249: return $currentstring;
250: }
251:
252: #-- <option> tag (end tag optional)
253: sub start_option {
254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
255: my $currentstring = '';
256: if ($target eq 'web') {
257: $currentstring = $token->[4];
258: } elsif ($target eq 'tex') {
259: $Apache::londefdef::select++;
260: if ($Apache::londefdef::select == 1) {
261: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
262: } else {
263: $currentstring='\keephidden{';
264: }
265: }
266: return $currentstring;
267: }
268:
269: sub end_option {
270: my ($target,$token) = @_;
271: my $currentstring = '';
272: if ($target eq 'web') {
273: $currentstring = $token->[2];
274: } elsif ($target eq 'tex') {
275: $currentstring='}';
276: }
277: return $currentstring;
278: }
279:
280: #-- <input> tag (end tag forbidden)
281: sub start_input {
282: my ($target,$token) = @_;
283: my $currentstring = '';
284: if ($target eq 'web') {
285: $currentstring = $token->[4];
286: }
287: return $currentstring;
288: }
289:
290: sub end_input {
291: my ($target,$token) = @_;
292: my $currentstring = '';
293: if ($target eq 'web') {
294: $currentstring = $token->[2];
295: }
296: return $currentstring;
297: }
298:
299: #-- <textarea> tag (end tag required)
300: sub start_textarea {
301: my ($target,$token) = @_;
302: my $currentstring = '';
303: if ($target eq 'web') {
304: $currentstring = $token->[4];
305: }
306: return $currentstring;
307: }
308:
309: sub end_textarea {
310: my ($target,$token) = @_;
311: my $currentstring = '';
312: if ($target eq 'web') {
313: $currentstring = $token->[2];
314: }
315: return $currentstring;
316: }
317:
318: #-- <form> tag (end tag required)
319: sub start_form {
320: my ($target,$token) = @_;
321: my $currentstring = '';
322: if ($target eq 'web') {
323: $currentstring = $token->[4];
324: }
325: return $currentstring;
326: }
327:
328: sub end_form {
329: my ($target,$token) = @_;
330: my $currentstring = '';
331: if ($target eq 'web') {
332: $currentstring = $token->[2];
333: }
334: return $currentstring;
335: }
336:
337: #-- <title> tag (end tag required)
338: sub start_title {
339: my ($target,$token) = @_;
340: my $currentstring = '';
341: if ($target eq 'web') {
342: $currentstring = $token->[4];
343: } elsif ($target eq 'tex') {
344: $currentstring .= '\keephidden{Title of the document: '
345: }
346: if ($target eq 'meta') {
347: $currentstring='<title>';
348: &start_output($target);
349: }
350: return $currentstring;
351: }
352:
353: sub end_title {
354: my ($target,$token) = @_;
355: my $currentstring = '';
356: if ($target eq 'web') {
357: $currentstring = $token->[2];
358: } elsif ($target eq 'tex') {
359: $currentstring .= '}';
360: }
361: if ($target eq 'meta') {
362: &end_output($target);
363: $currentstring='</title>';
364: }
365: return $currentstring;
366: }
367:
368: #-- <meta> tag (end tag forbidden)
369: sub start_meta {
370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
371: my $currentstring = '';
372: if ($target eq 'web') {
373: my $args='';
374: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
375: if ($args eq '') {
376: &Apache::lonxml::get_all_text("/meta",$parser);
377: } else {
378: $currentstring = $token->[4];
379: }
380: } elsif ($target eq 'meta') {
381: unless (&Apache::lonxml::get_param
382: ('http-equiv',$parstack,$safeeval,undef,1)) {
383: my $name=$token->[2]->{'name'};
384: $name=~tr/A-Z/a-z/;
385: $name=~s/\s/\_/gs;
386: $name=~s/\W//gs;
387: if ($name) {
388: $currentstring='<'.$name;
389: my $display=&Apache::lonxml::get_param
390: ('display',$parstack,$safeeval,undef,1);
391: if ($display) {
392: $display=~s/\"/\'/g;
393: $currentstring.=' display="'.$display.'"';
394: }
395: $currentstring.='>'.
396: &Apache::lonxml::get_param
397: ('content',$parstack,$safeeval,undef,1).
398: '</'.$name.'>';
399: }
400: my $display=&Apache::lonxml::get_param
401: ('display',$parstack,$safeeval,undef,1);
402: if ($display) {
403: $display=&HTML::Entities::encode($display,'<>&"');
404: $currentstring.='<'.$name.'.display>'.$display.
405: '</'.$name.'.display>';
406: }
407: }
408: } elsif ($target eq 'tex') {
409: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
410: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
411: if ((not defined $content) && (not defined $name)) {
412: &Apache::lonxml::startredirection();
413: }
414: }
415: return $currentstring;
416: }
417:
418: sub end_meta {
419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
420: my $currentstring = '';
421: if ($target eq 'web') {
422: my $args='';
423: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
424: if ($args ne '') {
425: $currentstring = $token->[4];
426: }
427: } elsif ($target eq 'tex') {
428: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
429: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
430: if ((not defined $content) && (not defined $name)) {
431: &Apache::lonxml::endredirection();
432: }
433: }
434: return $currentstring;
435: }
436:
437: # accessrule
438: sub start_accessrule {
439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
440: my $currentstring = '';
441: my $eff=&Apache::lonxml::get_param
442: ('effect',$parstack,$safeeval,undef,1);
443: my $realm=&Apache::lonxml::get_param
444: ('realm',$parstack,$safeeval,undef,1);
445: my $role=&Apache::lonxml::get_param
446: ('role',$parstack,$safeeval,undef,1);
447: $realm=~s/\s+//g;
448: $realm=~s/\//\_/g;
449: $realm=~s/^\_//;
450: $realm=~s/\W/\;/g;
451: $role=~s/\s+//g;
452: $role=~s/\//\_/g;
453: $role=~s/\W/\;/g;
454: if ($target eq 'web') {
455: my $args='';
456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
457: if ($args eq '') {
458: &Apache::lonxml::get_all_text("/accessrule",$parser);
459: } else {
460: $currentstring = $token->[4];
461: }
462: }
463: if ($target eq 'meta') {
464: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
465: }
466: return $currentstring;
467: }
468:
469: sub end_accessrule {
470: my ($target,$token,$tagstack,$parstack,$parser) = @_;
471: my $currentstring = '';
472: if ($target eq 'web') {
473: my $args='';
474: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
475: if ($args ne '') {
476: $currentstring = $token->[4];
477: }
478: }
479: return $currentstring;
480: }
481:
482: #-- <body> tag (end tag required)
483: sub start_body {
484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
485: my $currentstring = '';
486:
487: if ($target eq 'web') {
488: if ($Apache::lonhomework::parsing_a_problem) {
489: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
490: return '';
491: }
492: if (!$Apache::lonxml::registered &&
493: $ENV{'request.state'} eq 'published') {
494: $currentstring.='<head>'.
495: &Apache::lonmenu::registerurl(undef,$target).'</head>';
496: }
497: # Accessibility
498: if ($ENV{'browser.imagesuppress'} eq 'on') {
499: delete($token->[2]->{'background'});
500: }
501: if ($ENV{'browser.fontenhance'} eq 'on') {
502: my $style='';
503: foreach my $key (keys(%{$token->[2]})) {
504: if ($key =~ /^style$/i) {
505: $style.=$token->[2]->{$key}.';';
506: delete($token->[2]->{$key});
507: }
508: }
509: $token->[2]->{'style'}=$style.'; font-size: x-large;';
510: }
511: if ($ENV{'browser.blackwhite'} eq 'on') {
512: delete($token->[2]->{'font'});
513: delete($token->[2]->{'link'});
514: delete($token->[2]->{'alink'});
515: delete($token->[2]->{'vlink'});
516: delete($token->[2]->{'bgcolor'});
517: delete($token->[2]->{'background'});
518: }
519: # Overload loads
520: my $onLoad='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^onload$/i) {
523: $onLoad.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
528: my $onUnload='';
529: foreach my $key (keys(%{$token->[2]})) {
530: if ($key =~ /^onunload$/i) {
531: $onUnload.=$token->[2]->{$key}.';';
532: delete($token->[2]->{$key});
533: }
534: }
535: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
536: ';'.$onUnload;
537:
538: if ($ENV{'request.state'} ne 'construct') {
539: $currentstring .= '<'.$token->[1];
540: }
541: foreach (keys %{$token->[2]}) {
542: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
543: }
544: if ($ENV{'request.state'} ne 'construct') {
545: $currentstring.='>';
546: }
547: if ($ENV{'request.state'} ne 'published') {
548: my $remote=($ENV{'environment.remote'} ne 'off');
549: $currentstring=&Apache::loncommon::bodytag(undef,undef,
550: $currentstring,$remote);
551: $currentstring.=(<<EDITBUTTON);
552: <form method="post">
553: <input type="submit" name="editmode" accesskey="e" value="Edit" />
554: </form>
555: EDITBUTTON
556: } else {
557: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
558: }
559: $currentstring.=&Apache::lonxml::message_location();
560: } elsif ($target eq 'tex') {
561: $currentstring = '\begin{document}';
562: }
563: return $currentstring;
564: }
565:
566: sub end_body {
567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
568: my $currentstring = '';
569: if ($target eq 'web') {
570: $currentstring = &Apache::lonxml::xmlend($target,$parser);
571: } elsif ($target eq 'tex') {
572: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
573: }
574: return $currentstring;
575: }
576:
577: #-- <center> tag (end tag required)
578: sub start_center {
579: my ($target,$token) = @_;
580: my $currentstring = '';
581: if ($target eq 'web') {
582: $currentstring = $token->[4];
583: } elsif ($target eq 'tex') {
584: $currentstring = '\begin{center}';
585: }
586: return $currentstring;
587: }
588:
589: sub end_center {
590: my ($target,$token) = @_;
591: my $currentstring = '';
592: if ($target eq 'web') {
593: $currentstring = $token->[2];
594: } elsif ($target eq 'tex') {
595: $currentstring = '\end{center}';
596: }
597: return $currentstring;
598: }
599:
600: #-- <b> tag (end tag required)
601: sub start_b {
602: my ($target,$token) = @_;
603: my $currentstring = '';
604: if ($target eq 'web') {
605: $currentstring = $token->[4];
606: } elsif ($target eq 'tex') {
607: $currentstring = '\textbf{';
608: }
609: return $currentstring;
610: }
611:
612: sub end_b {
613: my ($target,$token) = @_;
614: my $currentstring = '';
615: if ($target eq 'web') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: $currentstring = '}';
619: }
620: return $currentstring;
621: }
622:
623: #-- <strong> tag (end tag required)
624: sub start_strong {
625: my ($target,$token) = @_;
626: my $currentstring = '';
627: if ($target eq 'web') {
628: $currentstring = $token->[4];
629: } elsif ($target eq 'tex') {
630: $currentstring = '\textbf{';
631: }
632: return $currentstring;
633: }
634:
635: sub end_strong {
636: my ($target,$token) = @_;
637: my $currentstring = '';
638: if ($target eq 'web') {
639: $currentstring = $token->[2];
640: } elsif ($target eq 'tex') {
641: $currentstring = '}';
642: }
643: return $currentstring;
644: }
645:
646: #-- <h1> tag (end tag required)
647: sub start_h1 {
648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
649: my $currentstring = '';
650: if ($target eq 'web') {
651: $currentstring .= $token->[4];
652: } elsif ($target eq 'tex') {
653: my $pre;
654: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
655: if ($align eq 'center') {
656: $pre='\begin{center}';
657: } elsif ($align eq 'left') {
658: $pre='\rlap{';
659: } elsif ($align eq 'right') {
660: $pre=' \hfill \llap{';
661: }
662: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
663: if (not defined $TeXsize) {$TeXsize="large";}
664: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
665: } elsif ($target eq 'meta') {
666: $currentstring='<subject>';
667: &start_output($target);
668: }
669: return $currentstring;
670: }
671:
672: sub end_h1 {
673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
674: my $currentstring = '';
675: if ($target eq 'web') {
676: $currentstring .= $token->[2];
677: } elsif ($target eq 'tex') {
678: my $post='\vskip 0 mm ';
679: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
680: if ($align eq 'center') {
681: $post='\end{center}';
682: } elsif ($align eq 'left') {
683: $post='} \hfill'.'\vskip 0 mm ';
684: } elsif ($align eq 'right') {
685: $post='}'.'\vskip 0 mm ';
686: }
687: $currentstring .= '}}'.$post;
688: } elsif ($target eq 'meta') {
689: &end_output($target);
690: $currentstring='</subject>';
691: }
692: return $currentstring;
693: }
694:
695: #-- <h2> tag
696: sub start_h2 {
697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
698: my $currentstring = '';
699: if ($target eq 'web') {
700: $currentstring .= $token->[4];
701: } elsif ($target eq 'tex') {
702: my $pre;
703: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
704: if ($align eq 'center') {
705: $pre='\begin{center}';
706: } elsif ($align eq 'left') {
707: $pre='\rlap{';
708: } elsif ($align eq 'right') {
709: $pre=' \hfill \llap{';
710: }
711: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
712: if (not defined $TeXsize) {$TeXsize="large";}
713: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
714: }
715: return $currentstring;
716: }
717:
718: sub end_h2 {
719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
720: my $currentstring = '';
721: if ($target eq 'web') {
722: $currentstring .= $token->[2];
723: } elsif ($target eq 'tex') {
724: my $post='\vskip 0 mm ';
725: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
726: if ($align eq 'center') {
727: $post='\end{center}';
728: } elsif ($align eq 'left') {
729: $post='} \hfill'.'\vskip 0 mm ';
730: } elsif ($align eq 'right') {
731: $post='}'.'\vskip 0 mm ';
732: }
733: $currentstring .= '}}'.$post;
734: }
735: return $currentstring;
736: }
737:
738: #-- <h3> tag
739: sub start_h3 {
740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
741: my $currentstring = '';
742: if ($target eq 'web') {
743: $currentstring .= $token->[4];
744: } elsif ($target eq 'tex') {
745: my $pre;
746: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
747: if ($align eq 'center') {
748: $pre='\begin{center}';
749: } elsif ($align eq 'left') {
750: $pre='\rlap{';
751: } elsif ($align eq 'right') {
752: $pre=' \hfill \llap{';
753: }
754: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
755: if (not defined $TeXsize) {$TeXsize="large";}
756: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
757: }
758: return $currentstring;
759: }
760:
761: sub end_h3 {
762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
763: my $currentstring = '';
764: if ($target eq 'web') {
765: $currentstring .= $token->[2];
766: } elsif ($target eq 'tex') {
767: my $post='\vskip 0 mm ';
768: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
769: if ($align eq 'center') {
770: $post='\end{center}';
771: } elsif ($align eq 'left') {
772: $post='} \hfill'.'\vskip 0 mm ';
773: } elsif ($align eq 'right') {
774: $post='}'.'\vskip 0 mm ';
775: }
776: $currentstring .= '}}'.$post;
777: }
778: return $currentstring;
779: }
780:
781: #-- <h4> tag
782: sub start_h4 {
783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
784: my $currentstring = '';
785: if ($target eq 'web') {
786: $currentstring .= $token->[4];
787: } elsif ($target eq 'tex') {
788: my $pre;
789: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
790: if ($align eq 'center') {
791: $pre='\begin{center}';
792: } elsif ($align eq 'left') {
793: $pre='\rlap{';
794: } elsif ($align eq 'right') {
795: $pre=' \hfill \llap{';
796: }
797: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
798: if (not defined $TeXsize) {$TeXsize="large";}
799: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
800: }
801: return $currentstring;
802: }
803:
804: sub end_h4 {
805: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
806: my $currentstring = '';
807: if ($target eq 'web') {
808: $currentstring .= $token->[2];
809: } elsif ($target eq 'tex') {
810: my $post='\vskip 0 mm ';
811: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
812: if ($align eq 'center') {
813: $post='\end{center}';
814: } elsif ($align eq 'left') {
815: $post='} \hfill'.'\vskip 0 mm ';
816: } elsif ($align eq 'right') {
817: $post='}'.'\vskip 0 mm ';
818: }
819: $currentstring .= '}}'.$post;
820: }
821: return $currentstring;
822: }
823:
824: #-- <h5> tag
825: sub start_h5 {
826: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
827: my $currentstring = '';
828: if ($target eq 'web') {
829: $currentstring .= $token->[4];
830: } elsif ($target eq 'tex') {
831: my $pre;
832: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
833: if ($align eq 'center') {
834: $pre='\begin{center}';
835: } elsif ($align eq 'left') {
836: $pre='\rlap{';
837: } elsif ($align eq 'right') {
838: $pre=' \hfill \llap{';
839: }
840: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
841: if (not defined $TeXsize) {$TeXsize="large";}
842: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
843: }
844: return $currentstring;
845: }
846:
847: sub end_h5 {
848: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
849: my $currentstring = '';
850: if ($target eq 'web') {
851: $currentstring .= $token->[2];
852: } elsif ($target eq 'tex') {
853: my $post='\vskip 0 mm ';
854: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
855: if ($align eq 'center') {
856: $post='\end{center}';
857: } elsif ($align eq 'left') {
858: $post='} \hfill'.'\vskip 0 mm ';
859: } elsif ($align eq 'right') {
860: $post='}'.'\vskip 0 mm ';
861: }
862: $currentstring .= '}}'.$post;
863: }
864: return $currentstring;
865: }
866:
867: #-- <h6> tag
868: sub start_h6 {
869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
870: my $currentstring = '';
871: if ($target eq 'web') {
872: $currentstring .= $token->[4];
873: } elsif ($target eq 'tex') {
874: my $pre;
875: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
876: if ($align eq 'center') {
877: $pre='\begin{center}';
878: } elsif ($align eq 'left') {
879: $pre='\rlap{';
880: } elsif ($align eq 'right') {
881: $pre=' \hfill \llap{';
882: }
883: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
884: if (not defined $TeXsize) {$TeXsize="large";}
885: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
886: }
887: return $currentstring;
888: }
889:
890: sub end_h6 {
891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
892: my $currentstring = '';
893: if ($target eq 'web') {
894: $currentstring .= $token->[2];
895: } elsif ($target eq 'tex') {
896: my $post='\vskip 0 mm ';
897: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
898: if ($align eq 'center') {
899: $post='\end{center}';
900: } elsif ($align eq 'left') {
901: $post='} \hfill'.'\vskip 0 mm ';
902: } elsif ($align eq 'right') {
903: $post='}'.'\vskip 0 mm ';
904: }
905: $currentstring .= '}}'.$post;
906: }
907: return $currentstring;
908: }
909:
910: #--- <cite> tag (end tag required)
911: sub start_cite {
912: my ($target,$token) = @_;
913: my $currentstring = '';
914: if ($target eq 'web') {
915: $currentstring .= $token->[4];
916: } elsif ($target eq 'tex') {
917: $currentstring .= '\textit{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_cite {
923: my ($target,$token) = @_;
924: my $currentstring = '';
925: if ($target eq 'web') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: $currentstring .= '}';
929: }
930: return $currentstring;
931: }
932:
933: #-- <i> tag (end tag required)
934: sub start_i {
935: my ($target,$token) = @_;
936: my $currentstring = '';
937: if ($target eq 'web') {
938: $currentstring .= $token->[4];
939: } elsif ($target eq 'tex') {
940: $currentstring .= '\textit{';
941: }
942: return $currentstring;
943: }
944:
945: sub end_i {
946: my ($target,$token) = @_;
947: my $currentstring = '';
948: if ($target eq 'web') {
949: $currentstring .= $token->[2];
950: } elsif ($target eq 'tex') {
951: $currentstring .= '}';
952: }
953: return $currentstring;
954: }
955:
956: #-- <address> tag (end tag required)
957: sub start_address {
958: my ($target,$token) = @_;
959: my $currentstring = '';
960: if ($target eq 'web') {
961: $currentstring .= $token->[4];
962: } elsif ($target eq 'tex') {
963: $currentstring .= '\textit{';
964: }
965: return $currentstring;
966: }
967:
968: sub end_address {
969: my ($target,$token) = @_;
970: my $currentstring = '';
971: if ($target eq 'web') {
972: $currentstring .= $token->[2];
973: } elsif ($target eq 'tex') {
974: $currentstring .= '}';
975: }
976: return $currentstring;
977: }
978:
979: #-- <dfn> tag (end tag required)
980: sub start_dfn {
981: my ($target,$token) = @_;
982: my $currentstring = '';
983: if ($target eq 'web') {
984: $currentstring .= $token->[4];
985: } elsif ($target eq 'tex') {
986: $currentstring .= '\textit{';
987: }
988: return $currentstring;
989: }
990:
991: sub end_dfn {
992: my ($target,$token) = @_;
993: my $currentstring = '';
994: if ($target eq 'web') {
995: $currentstring .= $token->[2];
996: } elsif ($target eq 'tex') {
997: $currentstring .= '}';
998: }
999: return $currentstring;
1000: }
1001:
1002: #-- <tt> tag (end tag required)
1003: sub start_tt {
1004: my ($target,$token) = @_;
1005: my $currentstring = '';
1006: if ($target eq 'web') {
1007: $currentstring .= $token->[4];
1008: } elsif ($target eq 'tex') {
1009: $currentstring .= '\texttt{';
1010: }
1011: return $currentstring;
1012: }
1013:
1014: sub end_tt {
1015: my ($target,$token) = @_;
1016: my $currentstring = '';
1017: if ($target eq 'web') {
1018: $currentstring .= $token->[2];
1019: } elsif ($target eq 'tex') {
1020: $currentstring .= '}';
1021: }
1022: return $currentstring;
1023: }
1024:
1025: #-- <kbd> tag (end tag required)
1026: sub start_kbd {
1027: my ($target,$token) = @_;
1028: my $currentstring = '';
1029: if ($target eq 'web') {
1030: $currentstring .= $token->[4];
1031: } elsif ($target eq 'tex') {
1032: $currentstring .= '\texttt{';
1033: }
1034: return $currentstring;
1035: }
1036:
1037: sub end_kbd {
1038: my ($target,$token) = @_;
1039: my $currentstring = '';
1040: if ($target eq 'web') {
1041: $currentstring .= $token->[2];
1042: } elsif ($target eq 'tex') {
1043: $currentstring .= '}';
1044: }
1045: return $currentstring;
1046: }
1047:
1048: #-- <code> tag (end tag required)
1049: sub start_code {
1050: my ($target,$token) = @_;
1051: my $currentstring = '';
1052: if ($target eq 'web') {
1053: $currentstring .= $token->[4];
1054: } elsif ($target eq 'tex') {
1055: $currentstring .= '\texttt{';
1056: }
1057: return $currentstring;
1058: }
1059:
1060: sub end_code {
1061: my ($target,$token) = @_;
1062: my $currentstring = '';
1063: if ($target eq 'web') {
1064: $currentstring .= $token->[2];
1065: } elsif ($target eq 'tex') {
1066: $currentstring .= '}';
1067: }
1068: return $currentstring;
1069: }
1070:
1071: #-- <em> tag (end tag required)
1072: sub start_em {
1073: my ($target,$token) = @_;
1074: my $currentstring = '';
1075: if ($target eq 'web') {
1076: $currentstring .= $token->[4];
1077: } elsif ($target eq 'tex') {
1078: $currentstring .= '\emph{';
1079: }
1080: return $currentstring;
1081: }
1082:
1083: sub end_em {
1084: my ($target,$token) = @_;
1085: my $currentstring = '';
1086: if ($target eq 'web') {
1087: $currentstring .= $token->[2];
1088: } elsif ($target eq 'tex') {
1089: $currentstring .= '}';
1090: }
1091: return $currentstring;
1092: }
1093:
1094: #-- <q> tag (end tag required)
1095: sub start_q {
1096: my ($target,$token) = @_;
1097: my $currentstring = '';
1098: if ($target eq 'web') {
1099: $currentstring .= $token->[4];
1100: } elsif ($target eq 'tex') {
1101: $currentstring .= '\emph{';
1102: }
1103: return $currentstring;
1104: }
1105:
1106: sub end_q {
1107: my ($target,$token) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web') {
1110: $currentstring .= $token->[2];
1111: } elsif ($target eq 'tex') {
1112: $currentstring .= '}';
1113: }
1114: return $currentstring;
1115: }
1116:
1117: #-- <p> tag (end tag optional)
1118: #optional attribute - align="center|left|right"
1119: sub start_p {
1120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1121: my $currentstring = '';
1122: if ($target eq 'web') {
1123: $currentstring .= $token->[4];
1124: } elsif ($target eq 'tex') {
1125: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1126: if ($align eq 'center') {
1127: $currentstring='\begin{center}\par';
1128: } elsif ($align eq 'right') {
1129: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1130: } elsif ($align eq 'left') {
1131: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1132: } else {
1133: $currentstring='\par ';
1134: }
1135: my $signal=1;#<p> does not work inside <b>...</b>
1136: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1137: if (!$signal) {$currentstring = '';}
1138: }
1139: }
1140: return $currentstring;
1141: }
1142:
1143: sub end_p {
1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web') {
1147: $currentstring .= $token->[2];
1148: } elsif ($target eq 'tex') {
1149: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1150: if (not defined $align) {
1151: $currentstring.='\strut\\\\\strut ';
1152: } elsif ($align eq 'center') {
1153: $currentstring .= '\end{center}';
1154: } elsif ($align eq 'right') {
1155: $currentstring .= '}}';
1156: } elsif ($align eq 'left') {
1157: $currentstring .= '}\hfill}';
1158: }
1159: }
1160: return $currentstring;
1161: }
1162:
1163: #-- <br> tag (end tag forbidden)
1164: sub start_br {
1165: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1166: my $currentstring = '';
1167: if ($target eq 'web') {
1168: $currentstring .= $token->[4];
1169: } elsif ($target eq 'tex') {
1170: my @tempo=@$tagstack;
1171: my $signal=0;
1172: for (my $i=$#tempo;$i>=0;$i--) {
1173: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1174: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1175: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1176: $signal=1;
1177: last;
1178: }
1179: }
1180: if ($signal) {
1181: $currentstring .= ' \vskip 0 mm ';
1182: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1183: $currentstring .= '\strut \\\\ \strut ';
1184: }
1185: }
1186: return $currentstring;
1187: }
1188:
1189: sub end_br {
1190: my ($target,$token) = @_;
1191: my $currentstring = '';
1192: if ($target eq 'web') {
1193: $currentstring .= $token->[2];
1194: }
1195: return $currentstring;
1196: }
1197:
1198: #-- <big> tag (end tag required)
1199: sub start_big {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web') {
1203: $currentstring .= $token->[4];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '{\large ';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: sub end_big {
1211: my ($target,$token) = @_;
1212: my $currentstring = '';
1213: if ($target eq 'web') {
1214: $currentstring .= $token->[2];
1215: } elsif ($target eq 'tex') {
1216: $currentstring .= '}';
1217: }
1218: return $currentstring;
1219: }
1220:
1221: #-- <small> tag (end tag required)
1222: sub start_small {
1223: my ($target,$token) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web') {
1226: $currentstring .= $token->[4];
1227: } elsif ($target eq 'tex') {
1228: $currentstring .= '{\footnotesize ';
1229: }
1230: return $currentstring;
1231: }
1232:
1233: sub end_small {
1234: my ($target,$token) = @_;
1235: my $currentstring = '';
1236: if ($target eq 'web') {
1237: $currentstring .= $token->[2];
1238: } elsif ($target eq 'tex') {
1239: $currentstring .= '}';
1240: }
1241: return $currentstring;
1242: }
1243:
1244: #-- <basefont> tag (end tag forbidden)
1245: sub start_basefont {
1246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1247: my $currentstring = '';
1248: if ($target eq 'web') {
1249: $currentstring = $token->[4];
1250: } elsif ($target eq 'tex') {
1251: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1252: if (defined $basesize) {
1253: $currentstring = '{\\'.$basesize.' ';
1254: }
1255: }
1256: return $currentstring;
1257: }
1258:
1259: sub end_basefont {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1261: my $currentstring = '';
1262: if ($target eq 'web') {
1263: $currentstring = $token->[4];
1264: } elsif ($target eq 'tex') {
1265: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1266: if (defined $basesize) {
1267: $currentstring = '}';
1268: }
1269: }
1270: return $currentstring;
1271: }
1272:
1273: #-- <font> tag (end tag required)
1274: sub start_font {
1275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1276: my $currentstring = '';
1277: if ($target eq 'web') {
1278: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1279: if ($face!~/symbol/i) {
1280: if (($ENV{'browser.fontenhance'} eq 'on') ||
1281: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1282: }
1283: $currentstring = $token->[4];
1284: } elsif ($target eq 'tex') {
1285: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1286: if (defined $fontsize) {
1287: $currentstring = '{\\'.$fontsize.' ';
1288: }
1289: }
1290: return $currentstring;
1291: }
1292:
1293: sub end_font {
1294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1295: my $currentstring = '';
1296: if ($target eq 'web') {
1297: $currentstring = $token->[2];
1298: } elsif ($target eq 'tex') {
1299: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1300: if (defined $fontsize) {
1301: $currentstring = '}';
1302: }
1303: }
1304: return $currentstring;
1305: }
1306:
1307: #-- <strike> tag (end tag required)
1308: sub start_strike {
1309: my ($target,$token) = @_;
1310: my $currentstring = '';
1311: if ($target eq 'web') {
1312: $currentstring .= $token->[4];
1313: } elsif ($target eq 'tex') {
1314: &Apache::lonxml::startredirection();
1315: }
1316: return $currentstring;
1317: }
1318:
1319: sub end_strike {
1320: my ($target,$token) = @_;
1321: my $currentstring = '';
1322: if ($target eq 'web') {
1323: $currentstring .= $token->[2];
1324: } elsif ($target eq 'tex') {
1325: $currentstring=&Apache::lonxml::endredirection();
1326: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1327: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1328: $currentstring=~s/(\S)\s*$/$1\}/;
1329: }
1330: return $currentstring;
1331: }
1332:
1333: #-- <s> tag (end tag required)
1334: sub start_s {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web') {
1338: $currentstring .= $token->[4];
1339: } elsif ($target eq 'tex') {
1340: &Apache::lonxml::startredirection();
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_s {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web') {
1349: $currentstring .= $token->[2];
1350: } elsif ($target eq 'tex') {
1351: $currentstring=&Apache::lonxml::endredirection();
1352: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1353: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1354: $currentstring=~s/(\S)\s*$/$1\}/;
1355: }
1356: return $currentstring;
1357: }
1358:
1359: #-- <sub> tag (end tag required)
1360: sub start_sub {
1361: my ($target,$token) = @_;
1362: my $currentstring = '';
1363: if ($target eq 'web') {
1364: $currentstring .= $token->[4];
1365: } elsif ($target eq 'tex') {
1366: $currentstring .= '\ensuremath{_{';
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_sub {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web') {
1375: $currentstring .= $token->[2];
1376: } elsif ($target eq 'tex') {
1377: $currentstring .= '}}';
1378: }
1379: return $currentstring;
1380: }
1381:
1382: #-- <sup> tag (end tag required)
1383: sub start_sup {
1384: my ($target,$token) = @_;
1385: my $currentstring = '';
1386: if ($target eq 'web') {
1387: $currentstring .= $token->[4];
1388: } elsif ($target eq 'tex') {
1389: $currentstring .= '\ensuremath{^{';
1390: }
1391: return $currentstring;
1392: }
1393:
1394: sub end_sup {
1395: my ($target,$token) = @_;
1396: my $currentstring = '';
1397: if ($target eq 'web') {
1398: $currentstring .= $token->[2];
1399: } elsif ($target eq 'tex') {
1400: $currentstring .= '}}';
1401: }
1402: return $currentstring;
1403: }
1404:
1405: #-- <hr> tag (end tag forbidden)
1406: sub start_hr {
1407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1408: my $currentstring = '';
1409: if ($target eq 'web') {
1410: $currentstring .= $token->[4];
1411: } elsif ($target eq 'tex') {
1412: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1413: if (defined $LaTeXwidth) {
1414: if ($LaTeXwidth=~/^%/) {
1415: substr($LaTeXwidth,0,1)='';
1416: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1417: }
1418: } else {
1419: $LaTeXwidth ='0.9\textwidth';
1420: }
1421: my ($pre,$post);
1422: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1423: if (($align eq 'center') || (not defined $align)) {
1424: $pre=''; $post='';
1425: } elsif ($align eq 'left') {
1426: $pre='\rlap{'; $post='} \hfill';
1427: } elsif ($align eq 'right') {
1428: $pre=' \hfill \llap{'; $post='}';
1429: }
1430: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1431: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1432: }
1433: return $currentstring;
1434: }
1435:
1436: sub end_hr {
1437: my ($target,$token) = @_;
1438: my $currentstring = '';
1439: if ($target eq 'web') {
1440: $currentstring .= $token->[2];
1441: }
1442: return $currentstring;
1443: }
1444:
1445: #-- <div> tag (end tag required)
1446: sub start_div {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web') {
1450: $currentstring .= $token->[4];
1451: }
1452: return $currentstring;
1453: }
1454:
1455: sub end_div {
1456: my ($target,$token) = @_;
1457: my $currentstring = '';
1458: if ($target eq 'web') {
1459: $currentstring .= $token->[2];
1460: }
1461: return $currentstring;
1462: }
1463:
1464: #-- <a> tag (end tag required)
1465: sub start_a {
1466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1467: my $currentstring = '';
1468: if ($target eq 'web') {
1469: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1470: undef,1);
1471: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1472: } elsif ($target eq 'tex') {
1473: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1474: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1475: if ($a=~/\S/) {
1476: $a=~s/([^\\])%/$1\\\%/g;
1477: $currentstring .= '\ref{URI: '.$a.'}';
1478: } elsif ($b=~/\S/) {
1479: $currentstring .= '\ref{Anchor: '.$b.'}';
1480: } else {
1481: $currentstring.='';
1482: }
1483: }
1484: return $currentstring;
1485: }
1486:
1487: sub end_a {
1488: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1489: my $currentstring = '';
1490: if ($target eq 'web') {
1491: $currentstring .= $token->[2];
1492: }
1493: return $currentstring;
1494: }
1495:
1496: #-- <li> tag (end tag optional)
1497: sub start_li {
1498: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1499: my $currentstring = '';
1500: if ($target eq 'web') {
1501: $currentstring = $token->[4];
1502: } elsif ($target eq 'tex') {
1503: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1504: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1505: #FIXME need to support types i and I
1506: if ($type=~/disc/) {
1507: $currentstring .= ' \item[$\bullet$] ';
1508: } elsif ($type=~/circle/) {
1509: $currentstring .= ' \item[$\circ$] ';
1510: } elsif ($type=~/square/) {
1511: $currentstring .= ' \item[$\diamond$] ';
1512: } elsif ($type eq '1') {
1513: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1514: } elsif ($type eq 'A') {
1515: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1516: } elsif ($type eq 'a') {
1517: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1518: } elsif ($value ne '') {
1519: $currentstring .= ' \item['.$value.'] ';
1520: } else {
1521: $currentstring .= ' \item ';
1522: }
1523: $Apache::londefdef::list_index++;
1524: }
1525: return $currentstring;
1526: }
1527:
1528: sub end_li {
1529: my ($target,$token) = @_;
1530: my $currentstring = '';
1531: if ($target eq 'web') {
1532: $currentstring = $token->[2];
1533: }
1534: return $currentstring;
1535: }
1536:
1537: #-- <u> tag (end tag required)
1538: sub start_u {
1539: my ($target,$token) = @_;
1540: my $currentstring = '';
1541: if ($target eq 'web') {
1542: $currentstring .= $token->[4];
1543: } elsif ($target eq 'tex') {
1544: &Apache::lonxml::startredirection();
1545: }
1546: return $currentstring;
1547: }
1548:
1549: sub end_u {
1550: my ($target,$token) = @_;
1551: my $currentstring = '';
1552: if ($target eq 'web') {
1553: $currentstring .= $token->[2];
1554: } elsif ($target eq 'tex') {
1555: $currentstring=&Apache::lonxml::endredirection();
1556: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1557: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1558: $currentstring=~s/(\S)\s*$/$1\}/;
1559: }
1560: return $currentstring;
1561: }
1562:
1563: #-- <ul> tag (end tag required)
1564: sub start_ul {
1565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1566: my $currentstring = '';
1567: if ($target eq 'web') {
1568: $currentstring = $token->[4];
1569: } elsif ($target eq 'tex') {
1570: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1571: $Apache::londefdef::list_index=0;
1572: if ($TeXtype eq 'disc') {
1573: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1574: '\renewcommand{\labelitemii}{$\bullet$}'.
1575: '\renewcommand{\labelitemiii}{$\bullet$}'.
1576: '\renewcommand{\labelitemiv}{$\bullet$}';
1577: } elsif ($TeXtype eq 'circle') {
1578: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1579: '\renewcommand{\labelitemii}{$\circ$}'.
1580: '\renewcommand{\labelitemiii}{$\circ$}'.
1581: '\renewcommand{\labelitemiv}{$\circ$}';
1582: } elsif ($TeXtype eq 'square') {
1583: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1584: '\renewcommand{\labelitemii}{$\diamond$}'.
1585: '\renewcommand{\labelitemiii}{$\diamond$}'.
1586: '\renewcommand{\labelitemiv}{$\diamond$}';
1587: }
1588: $currentstring .= '\strut \begin{itemize}';
1589: }
1590: return $currentstring;
1591: }
1592:
1593: sub end_ul {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web') {
1597: $currentstring = $token->[2];
1598: } elsif ($target eq 'tex') {
1599: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1600: '\renewcommand{\labelitemii}{$\bullet$}'.
1601: '\renewcommand{\labelitemiii}{$\bullet$}'.
1602: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1603: }
1604: return $currentstring;
1605: }
1606:
1607: #-- <menu> tag (end tag required)
1608: sub start_menu {
1609: my ($target,$token) = @_;
1610: my $currentstring = '';
1611: if ($target eq 'web') {
1612: $currentstring = $token->[4];
1613: } elsif ($target eq 'tex') {
1614: $currentstring = " \\begin{itemize} ";
1615: }
1616: return $currentstring;
1617: }
1618:
1619: sub end_menu {
1620: my ($target,$token) = @_;
1621: my $currentstring = '';
1622: if ($target eq 'web') {
1623: $currentstring = $token->[2];
1624: } elsif ($target eq 'tex') {
1625: $currentstring = " \\end{itemize}";
1626: }
1627: return $currentstring;
1628: }
1629:
1630: #-- <dir> tag (end tag required)
1631: sub start_dir {
1632: my ($target,$token) = @_;
1633: my $currentstring = '';
1634: if ($target eq 'web') {
1635: $currentstring = $token->[4];
1636: } elsif ($target eq 'tex') {
1637: $currentstring = " \\begin{itemize} ";
1638: }
1639: return $currentstring;
1640: }
1641:
1642: sub end_dir {
1643: my ($target,$token) = @_;
1644: my $currentstring = '';
1645: if ($target eq 'web') {
1646: $currentstring = $token->[2];
1647: } elsif ($target eq 'tex') {
1648: $currentstring = " \\end{itemize}";
1649: }
1650: return $currentstring;
1651: }
1652:
1653: #-- <ol> tag (end tag required)
1654: sub start_ol {
1655: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1656: my $currentstring = '';
1657: if ($target eq 'web') {
1658: $currentstring = $token->[4];
1659: } elsif ($target eq 'tex') {
1660: $Apache::londefdef::list_index=0;
1661: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1662: if ($type eq '1') {
1663: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1664: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1665: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1666: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1667: } elsif ($type eq 'A') {
1668: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1669: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1670: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1671: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1672: } elsif ($type eq 'a') {
1673: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1674: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1675: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1676: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1677: } elsif ($type eq 'i') {
1678: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1679: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1680: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1681: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1682: } elsif ($type eq 'I') {
1683: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1684: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1685: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1686: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1687: }
1688: $currentstring .= '\strut \begin{enumerate}';
1689: }
1690: return $currentstring;
1691: }
1692:
1693: sub end_ol {
1694: my ($target,$token) = @_;
1695: my $currentstring = '';
1696: if ($target eq 'web') {
1697: $currentstring = $token->[2];
1698: } elsif ($target eq 'tex') {
1699: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1700: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1701: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1702: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1703: }
1704: return $currentstring;
1705: }
1706:
1707: #-- <dl> tag (end tag required)
1708: sub start_dl {
1709: my ($target,$token) = @_;
1710: my $currentstring = '';
1711: if ($target eq 'web') {
1712: $currentstring = $token->[4];
1713: } elsif ($target eq 'tex') {
1714: $currentstring = '\begin{description}';
1715: $Apache::londefdef::DL++;
1716: push(@Apache::londefdef::description,[]);
1717: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1718: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1719: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1720: }
1721: return $currentstring;
1722: }
1723:
1724: sub end_dl {
1725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1726: my $currentstring = '';
1727: if ($target eq 'web') {
1728: $currentstring = $token->[2];
1729: } elsif ($target eq 'tex') {
1730: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1731: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1732: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1733: $currentstring.=' '.$element.' ';
1734: }
1735: pop(@Apache::londefdef::description);
1736: $currentstring.='\end{description}';
1737: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1738: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1739: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1740: $Apache::londefdef::DL--;
1741: }
1742: return $currentstring;
1743: }
1744:
1745: #-- <dt> tag (end tag optional)
1746: sub start_dt {
1747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1748: my $currentstring='';
1749: if ($target eq 'web') {
1750: $currentstring = $token->[4];
1751: } elsif ($target eq 'tex') {
1752: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1753: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1754: &Apache::lonxml::startredirection();
1755: $Apache::londefdef::DT[-1]++;
1756: $Apache::londefdef::seenDT[-1]=1;
1757: }
1758: return $currentstring;
1759: }
1760:
1761: sub end_dt {
1762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1763: my $currentstring = '';
1764: if ($target eq 'web') {
1765: $currentstring = $token->[2];
1766: } elsif ($target eq 'tex') {
1767: if ($Apache::londefdef::DT[-1]) {
1768: my $data=&item_cleanup();
1769: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1770: $Apache::londefdef::DT[-1]--;
1771: }
1772: }
1773: return $currentstring;
1774: }
1775:
1776: sub item_cleanup {
1777: my $item=&Apache::lonxml::endredirection();
1778: $item=~s/\\begin{center}//g;
1779: $item=~s/\\end{center}//g;
1780: return $item;
1781: }
1782:
1783: #-- <dd> tag (end tag optional)
1784: sub start_dd {
1785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1786: my $currentstring = '';
1787: if ($target eq 'web') {
1788: $currentstring = $token->[4];
1789: } elsif ($target eq 'tex') {
1790: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1791: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1792: if (!$Apache::londefdef::seenDT[-1]) {
1793: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1794: }
1795: push(@{$Apache::londefdef::description[-1]},'');
1796: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1797: $Apache::londefdef::DD[-1]++;
1798: &Apache::lonxml::startredirection();
1799: }
1800: return $currentstring;
1801: }
1802:
1803: sub end_dd {
1804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1805: my $currentstring = '';
1806: if ($target eq 'web') {
1807: $currentstring = $token->[2];
1808: } elsif ($target eq 'tex') {
1809: $Apache::londefdef::description[-1]->[-1].=
1810: &Apache::lonxml::endredirection().' \vskip 0mm ';
1811: $Apache::londefdef::DD[-1]--;
1812: }
1813: return $currentstring;
1814: }
1815:
1816: #-- <table> tag (end tag required)
1817: #list of supported attributes: border,width,TeXwidth
1818: sub start_table {
1819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1820: my ($textwidth,$currentstring)=('','');
1821: if ($target eq 'web') {
1822: $currentstring = $token->[4];
1823: } elsif ($target eq 'tex') {
1824: my $aa = {};
1825: push @Apache::londefdef::table, $aa;
1826: $Apache::londefdef::table[-1]{'row_number'} = -1;
1827: #maximum table's width (default coincides with text line length)
1828: if ($#Apache::londefdef::table==0) {
1829: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1830: $textwidth=~/(\d+\.?\d*)/;
1831: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1832: } else {
1833: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1834: #the maximum width of nested table is determined by LATeX width of parent cell
1835: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1836: } else {
1837: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1838: $textwidth=$Apache::londefdef::table[-2]{'width'};
1839: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1840: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1841: }
1842: }
1843: }
1844: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1845: if (not defined $TeXwidth) {
1846: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1847: if ($htmlwidth=~/%/) {
1848: $Apache::londefdef::table[-1]{'percent'}=1;
1849: $htmlwidth=~/(\d+)/;
1850: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1851: } else {
1852: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1853: }
1854: } elsif ($TeXwidth=~/%/) {
1855: $Apache::londefdef::table[-1]{'percent'}=1;
1856: $TeXwidth=~/(\d+)/;
1857: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1858: } else {
1859: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1860: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1861: }
1862: #table's border
1863: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1864: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1865: unless (defined $border) { $border = 0; }
1866: if ($border) {
1867: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1868: $Apache::londefdef::table[-1]{'vinc'} = '&';
1869: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1870: } else {
1871: $Apache::londefdef::table[-1]{'hinc'} = '';
1872: $Apache::londefdef::table[-1]{'vinc'} = '&';
1873: $Apache::londefdef::table[-1]{'vvinc'} = '';
1874: }
1875: if ($#Apache::londefdef::table==0) {
1876: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1877: }
1878: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1879: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1880: $Apache::londefdef::table[-1]{'objectlen'}=[];
1881: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1882: $Apache::londefdef::table[-1]{'maxlen'}=[];
1883: $Apache::londefdef::table[-1]{'minlen'}=[];
1884: $Apache::londefdef::table[-1]{'content'}=[];
1885: $Apache::londefdef::table[-1]{'align'}=[];
1886: $currentstring='\keephidden{NEW TABLE ENTRY}';
1887: }
1888: return $currentstring;
1889: }
1890:
1891: sub end_table {
1892: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1893: my $currentstring = '';
1894: if ($target eq 'web') {
1895: $currentstring = $token->[2];
1896: } elsif ($target eq 'tex') {
1897: my $inmemory = '';
1898: my $output = '';
1899: my $WARNING='';
1900: #width of columns from TeXwidth attributes
1901: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1902: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1903: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1904: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1905: }
1906: }
1907: }
1908: #free space and number of empty columns
1909: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1910: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1911: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1912: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1913: $empty_columns++;
1914: } else {
1915: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1916: }
1917: }
1918: #boundaries for contents columns
1919: my @min_len=();#columns can not be narrower
1920: my @max_len=();#maximum length of column
1921: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1922: my ($localmin,$localmax)=(0,0);
1923: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1924: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1925: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1926: }
1927: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1928: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1929: }
1930: }
1931: push @min_len, $localmin;
1932: push @max_len, $localmax;
1933: }
1934: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1935: my $localmin=0,;
1936: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1937: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1938: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1939: }
1940: }
1941: if ($max_len[$jn]<$localmin) {
1942: $max_len[$jn]=$localmin;
1943: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1944: }#object size is bigger
1945: if ($min_len[$jn]<$localmin) {
1946: $min_len[$jn]=$localmin;
1947: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1948: }#object size is bigger
1949: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1950: $min_len[$jn]=0;
1951: $max_len[$jn]=0;
1952: }
1953: }
1954: #final adjustment of column width
1955: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1956: my @adjust=();
1957: #step 1. adjustment by maximum value
1958: my $space_neeeded=0;
1959: for (my $jn=0;$jn<=$#max_len;$jn++) {
1960: $space_neeeded=$space_neeeded+$max_len[$jn];
1961: }
1962: if ($space_neeeded<=$available_space) {
1963: for (my $jn=0;$jn<=$#max_len;$jn++) {
1964: if ($fwidth[$jn]==0) {
1965: $fwidth[$jn]=$max_len[$jn];
1966: }
1967: }
1968: } else {
1969: #step 2. adjustment by minimum value (estimation)
1970: $space_neeeded=0;
1971: for (my $jn=0;$jn<=$#min_len;$jn++) {
1972: $space_neeeded+=$min_len[$jn];
1973: }
1974: if ($space_neeeded>$available_space) {
1975: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1976: for (my $jn=0;$jn<=$#max_len;$jn++) {
1977: if ($fwidth[$jn]==0) {
1978: $fwidth[$jn]=$min_len[$jn];
1979: }
1980: }
1981: #check if we have objects which can be scaled
1982: my $how_many_to_scale=0;
1983: my @to_scale=();
1984: for (my $jn=0;$jn<=$#max_len;$jn++) {
1985: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1986: $how_many_to_scale++;
1987: push @to_scale, $jn;
1988: }
1989: }
1990: if ($how_many_to_scale>0) {
1991: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1992: foreach my $jn (@to_scale) {
1993: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1994: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1995: if ($1 ne '') {
1996: my $current_length=&recalc($1);
1997: $current_length=~/(\d+\.?\d*)/;
1998: $current_length=$current_length-$space_to_adjust;
1999: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2000: }
2001: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2002: if ($1 ne '') {
2003: my $current_length=$1;
2004: $current_length=$current_length-$space_to_adjust;
2005: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2006: }
2007: }
2008: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2009: }
2010: }
2011: } else {
2012: #step 3. adjustment over minimal + corrections
2013: my $enlarge_coef=$available_space/$space_neeeded;
2014: my $acsessive=0;
2015: for (my $jn=0;$jn<=$#min_len;$jn++) {
2016: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2017: if ($adjust[$jn]>$max_len[$jn]) {
2018: $fwidth[$jn]=$max_len[$jn];
2019: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2020: $adjust[$jn]=0;
2021: }
2022: }
2023: if ($acsessive>0) {
2024: #we have an excess of space and can redistribute it
2025: my $notempty_columns=0;
2026: for (my $jn=0;$jn<=$#min_len;$jn++) {
2027: if ($adjust[$jn]!=0) {
2028: $notempty_columns++;
2029: }
2030: }
2031: my $per_column=$acsessive/$notempty_columns;
2032: for (my $jn=0;$jn<=$#min_len;$jn++) {
2033: if ($adjust[$jn]!=0) {
2034: $adjust[$jn]+=$per_column;
2035: $fwidth[$jn]=$adjust[$jn];
2036: }
2037: }
2038: } else {
2039: for (my $jn=0;$jn<=$#min_len;$jn++) {
2040: $fwidth[$jn]=$adjust[$jn];
2041: }
2042: }
2043: }
2044: }
2045: #use all available width if it is defined in % or as TeXwidth
2046: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2047: my $current=0;
2048: for (my $i=0;$i<=$#fwidth;$i++) {
2049: $current+=$fwidth[$i];
2050: }
2051: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2052: for (my $i=0;$i<=$#fwidth;$i++) {
2053: $fwidth[$i]*=$coef;
2054: }
2055: }
2056: #removing of empty columns if allowed
2057: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2058: if ($permission eq 'yes') {
2059: my @cleaned_table=();
2060: my @cleaned_header=();
2061: my $colind=0;
2062: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2063: if ($fwidth[$jn]!=0) {
2064: #we need to copy column
2065: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2066: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2067: $cleaned_header[$colind]=$fwidth[$jn];
2068: }
2069: $colind++;
2070: }
2071: }
2072: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2073: @fwidth=@cleaned_header;
2074: }
2075: #construct header of the table
2076: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2077: for (my $in=0;$in<=$#fwidth;$in++) {
2078: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2079: }
2080: $header_of_table .= '}';
2081: #fill the table
2082: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2083: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2084: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2085: $output.='\vspace*{-6 mm}\begin{center}';
2086: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2087: $output.=' \hfill \llap{'
2088: }
2089: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2090: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2091: $output.='\end{center}\vspace*{-6 mm}';
2092: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2093: $output.='} ';
2094: }
2095: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2096: }
2097: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2098: }
2099: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2100: if ($#Apache::londefdef::table > 0) {
2101: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2102: pop @Apache::londefdef::table;
2103: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2104: } else {
2105: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2106: pop @Apache::londefdef::table;
2107: undef @Apache::londefdef::table;
2108: }
2109: }
2110: return $currentstring;
2111: }
2112:
2113: #-- <tr> tag (end tag optional)
2114: sub start_tr {
2115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2116: my $currentstring = '';
2117: if ($target eq 'web') {
2118: $currentstring = $token->[4];
2119: } elsif ($target eq 'tex') {
2120: $Apache::londefdef::table[-1]{'row_number'}++;
2121: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2122: if ($alignchar ne '') {
2123: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2124: } else {
2125: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2126: }
2127: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2128: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2129: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2130: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2131: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2132: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2133: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2134: }
2135: return $currentstring;
2136: }
2137:
2138: sub end_tr {
2139: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2140: my $currentstring = '';
2141: if ($target eq 'web') {
2142: $currentstring = $token->[2];
2143: } elsif ($target eq 'tex') {
2144: if ($Apache::londefdef::TD_redirection) {
2145: &end_td_tex($parstack,$parser,$safeeval);
2146: }
2147: }
2148: return $currentstring;
2149: }
2150:
2151: #-- <td> tag (end tag optional)
2152: sub start_td {
2153: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2154: my $currentstring = '';
2155: if ($target eq 'web') {
2156: $currentstring = $token->[4];
2157: } elsif ($target eq 'tex') {
2158: $Apache::londefdef::TD_redirection = 1;
2159: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2160: }
2161: return $currentstring;
2162: }
2163:
2164: sub tag_check {
2165: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2166: my @ar=@$parstack;
2167: for (my $i=$#ar-1;$i>=0;$i--) {
2168: if (lc($$tagstack[$i]) eq $good_tag) {
2169: &start_td_tex($parstack,$parser,$safeeval);
2170: last;
2171: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2172: splice @ar, $i+1;
2173: &end_td_tex(\@ar,$parser,$safeeval);
2174: &start_td_tex($parstack,$parser,$safeeval);
2175: last;
2176: }
2177: }
2178: return '';
2179: }
2180:
2181: sub start_td_tex {
2182: my ($parstack,$parser,$safeeval) = @_;
2183: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2184: if ($alignchar eq '') {
2185: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2186: }
2187: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2188: $Apache::londefdef::table[-1]{'counter_columns'}++;
2189: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2190: if (defined $TeXwidth) {
2191: my $current_length=&recalc($TeXwidth);
2192: $current_length=~/(\d+\.?\d*)/;
2193: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2194: }
2195: &Apache::lonxml::startredirection();
2196: return '';
2197: }
2198:
2199: sub end_td_tex {
2200: my ($parstack,$parser,$safeeval) = @_;
2201: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2202: my $data=&Apache::lonxml::endredirection();
2203: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2204: if (defined $TeXwidth) {
2205: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2207: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2208: } else {
2209: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2210: my $garbage_data=$data;
2211: my $fwidth=0;
2212: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2213: my $current_length=&recalc($1);
2214: $current_length=~/(\d+\.?\d*)/;
2215: if ($fwidth<$1) {$fwidth=$1;}
2216: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2217: }
2218: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2219: my $current_length=$1;
2220: if ($fwidth<$current_length) {$fwidth=$current_length;}
2221: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2222: }
2223: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2224: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2225: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2226: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2227: } elsif ($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)*/) {
2228: my $garbage_data=$data;
2229: my $fwidth=0;
2230: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2231: my $current_length=&recalc($1);
2232: $current_length=~/(\d+\.?\d*)/;
2233: if ($fwidth<$1) {$fwidth=$1;}
2234: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2235: }
2236: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2237: my $current_length=&recalc($1);
2238: $current_length=~/(\d+\.?\d*)/;
2239: if ($fwidth<$1) {$fwidth=$1;}
2240: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2241: }
2242: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2243: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2244: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2245: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2246: $data=~s/\\\\\s*$//;
2247: } else {
2248: $data=~s/^\s+(\S.*)/$1/;
2249: $data=~s/(.*\S)\s+$/$1/;
2250: $data=~s/(\s)+/$1/;
2251: my ($current_length,$min_length)=(0,0);
2252: if ($data=~/\\vskip/) {
2253: my $newdata=$data;
2254: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2255: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2256: foreach my $elementdata (@newdata) {
2257: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2258: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2259: my @words=split(/ /,$elementdata);
2260: foreach my $word (@words) {
2261: my $lengthword=2.5*&LATEX_length($word);
2262: if ($min_length<$lengthword) {$min_length=$lengthword;}
2263: }
2264: }
2265: } else {
2266: $current_length=2.5*&LATEX_length($data);
2267: my @words=split(/ /,$data);
2268: foreach my $word (@words) {
2269: my $lengthword=2*&LATEX_length($word);
2270: if ($min_length<$lengthword) {$min_length=$lengthword;}
2271: }
2272: }
2273: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2274: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2275: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2276: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2277: }
2278: }
2279: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2280: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2281: }
2282: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2283: return'';
2284: }
2285:
2286: sub end_td {
2287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2288: my $currentstring = '';
2289: if ($target eq 'web') {
2290: $currentstring = $token->[2];
2291: } elsif ($target eq 'tex') {
2292: $Apache::londefdef::TD_redirection =0;
2293: &end_td_tex($parstack,$parser,$safeeval);
2294: }
2295: return $currentstring;
2296: }
2297:
2298: #-- <th> tag (end tag optional)
2299: sub start_th {
2300: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2301: my $currentstring = '';
2302: if ($target eq 'web') {
2303: $currentstring = $token->[4];
2304: } elsif ($target eq 'tex') {
2305: $Apache::londefdef::TD_redirection = 1;
2306: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2307: }
2308: return $currentstring;
2309: }
2310:
2311: sub tagg_check {
2312: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2313: my @ar=@$parstack;
2314: for (my $i=$#ar-1;$i>=0;$i--) {
2315: if (lc($$tagstack[$i]) eq $good_tag) {
2316: &start_th_tex($parstack,$parser,$safeeval);
2317: last;
2318: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2319: splice @ar, $i+1;
2320: &end_th_tex(\@ar,$parser,$safeeval);
2321: &start_th_tex($parstack,$parser,$safeeval);
2322: last;
2323: }
2324: }
2325: return '';
2326: }
2327:
2328: sub start_th_tex {
2329: my ($parstack,$parser,$safeeval) = @_;
2330: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2331: if ($alignchar eq '') {
2332: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2333: }
2334: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2335: $Apache::londefdef::table[-1]{'counter_columns'}++;
2336: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2337: if (defined $TeXwidth) {
2338: my $current_length=&recalc($TeXwidth);
2339: $current_length=~/(\d+\.?\d*)/;
2340: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2341: }
2342: &Apache::lonxml::startredirection();
2343: return '';
2344: }
2345:
2346: sub end_th_tex {
2347: my ($parstack,$parser,$safeeval) = @_;
2348: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2349: my $data=&Apache::lonxml::endredirection();
2350: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2351: if (defined $TeXwidth) {
2352: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2354: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2355: } else {
2356: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2357: my $garbage_data=$data;
2358: my $fwidth=0;
2359: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2360: my $current_length=&recalc($1);
2361: $current_length=~/(\d+\.?\d*)/;
2362: if ($fwidth<$1) {$fwidth=$1;}
2363: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2364: }
2365: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2366: my $current_length=$1;
2367: if ($fwidth<$current_length) {$fwidth=$current_length;}
2368: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2369: }
2370: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2371: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2372: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2374: } else {
2375: $data=~s/^\s+(\S.*)/$1/;
2376: $data=~s/(.*\S)\s+$/$1/;
2377: $data=~s/(\s)+/$1/;
2378: my ($current_length,$min_length)=(0,0);
2379: if ($data=~/\\vskip/) {
2380: my $newdata=$data;
2381: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2382: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2383: foreach my $elementdata (@newdata) {
2384: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2385: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2386: my @words=split(/ /,$elementdata);
2387: foreach my $word (@words) {
2388: my $lengthword=2.5*&LATEX_length($word);
2389: if ($min_length<$lengthword) {$min_length=$lengthword;}
2390: }
2391: }
2392: } else {
2393: $current_length=2.5*&LATEX_length($data);
2394: my @words=split(/ /,$data);
2395: foreach my $word (@words) {
2396: my $lengthword=2*&LATEX_length($word);
2397: if ($min_length<$lengthword) {$min_length=$lengthword;}
2398: }
2399: }
2400: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2401: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2402: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2403: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2404: }
2405: }
2406: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2407: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2408: }
2409: #make data bold
2410: $data='\textbf{'.$data.'}';
2411: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2412: return'';
2413: }
2414:
2415: sub end_th {
2416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2417: my $currentstring = '';
2418: if ($target eq 'web') {
2419: $currentstring = $token->[2];
2420: } elsif ($target eq 'tex') {
2421: $Apache::londefdef::TD_redirection =0;
2422: &end_th_tex($parstack,$parser,$safeeval);
2423: }
2424: return $currentstring;
2425: }
2426:
2427: #-- <img> tag (end tag forbidden)
2428: #
2429: # Render the <IMG> tag.
2430: # <IMG> has the following attributes (in addition to the
2431: # standard HTML ones:
2432: # TeXwrap - Governs how the tex target will try to wrap text around
2433: # horizontally aligned images.
2434: # TeXwidth - The width of the image when rendered for print (mm).
2435: # TeXheight - The height of the image when rendered for print (mm)
2436: # (Note there seems to also be support for this as a % of page size)
2437: #
2438: sub start_img {
2439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2440: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2441: undef,1);
2442: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2443: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2444: return '';
2445: }
2446: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2447: my $currentstring = '';
2448: my $scaling = .3;
2449:
2450: # Render unto browsers that which are the browser's...
2451:
2452: if ($target eq 'web') {
2453: if ($ENV{'browser.imagesuppress'} ne 'on') {
2454: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2455: } else {
2456: my $alttag= &Apache::lonxml::get_param
2457: ('alt',$parstack,$safeeval,undef,1);
2458: unless ($alttag) {
2459: $alttag=&Apache::lonmeta::alttag
2460: ($Apache::lonxml::pwd[-1],$src);
2461: }
2462: $currentstring.='[IMAGE: '.$alttag.']';
2463: }
2464:
2465: # and render unto TeX that which is LaTeX
2466:
2467: } elsif ($target eq 'tex') {
2468: #
2469: # The alignment will require some superstructure to be put around
2470: # the \includegraphics stuff. At present we can only partially
2471: # simulate the alignments offered by html.
2472: #
2473: #
2474: my $align = lc(&Apache::lonxml::get_param('align',
2475: $parstack,
2476: $safeeval,
2477: undef,1));
2478: if(!$align) {
2479: $align = "bottom"; # This is html's default so it's ours too.
2480: }
2481: #
2482: &Apache::lonxml::debug("Alignemnt = $align");
2483: # LaTeX's image/text wrapping is really bad since it wants to
2484: # make figures float.
2485: # The user has the optional parameter (applicable only to l/r
2486: # alignment to use the picins/parpic directive to get wrapped text
2487: # this is also imperfect.. that's why we give them a choice...
2488: # so they can't yell at us for our choice.
2489: #
2490: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2491: $parstack,
2492: $safeeval,
2493: undef,0);
2494: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2495: if(!$latex_rendering) {
2496: $latex_rendering = "parbox";
2497: }
2498: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2499:
2500: #if original gif/jpg/png file exist do following:
2501: my ($path,$file) = &get_eps_image($src);
2502: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2503: if (-e $src) {
2504: my ($height_param,$width_param)=
2505: &image_size($src,0.3,$parstack,$safeeval);
2506: $currentstring .= '\graphicspath{{'.$path.'}}'
2507: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$file.'} ';
2508:
2509: # If there's an alignment specification we need to honor it here.
2510: # For the horizontal alignments, we will also honor the
2511: # value of the latex specfication. The default is parbox,
2512: # and that's used for illegal values too.
2513: #
2514: # Even though we set a default alignment value, the user
2515: # could have given us an illegal value. In that case we
2516: # just use the default alignment of bottom..
2517: if ($align eq "top") {
2518: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2519: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2520: my $offset = $height_param/2;
2521: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2522: } elsif ($align eq "left") {
2523: if ($latex_rendering eq "parpic") {
2524: $currentstring = '\parpic[l]{'.$currentstring.'}';
2525: } else { # parbox rendering
2526: $currentstring = "\\strut\\newline\n".
2527: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2528: }
2529: } elsif ($align eq "right") {
2530: if ($latex_rendering eq "parpic") {
2531: $currentstring = '\parpic[r]{'.$currentstring.'}';
2532: } else { # parbox rendering.
2533: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2534: .$currentstring.'\end{flushright}} \newline'."\n";
2535: }
2536: } else { # Bottom is also default.
2537: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2538: }
2539: } else {
2540: #original image file doesn't exist so check the alt attribute
2541: my $alt =
2542: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2543: unless ($alt) {
2544: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2545: }
2546:
2547: if ($alt) { $currentstring .= ' '.$alt.' '; }
2548: }
2549:
2550: # And here's where the semi-quote breaks down: allow the user
2551: # to edit the beast as well by rendering the problem for edit:
2552: } elsif ($target eq 'edit') {
2553: $currentstring .=&Apache::edit::tag_start($target,$token);
2554: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2555: &Apache::edit::browse('src',undef,'alt').' '.
2556: &Apache::edit::search('src',undef,'alt').'<br />';
2557: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2558: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2559: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2560: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2561: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2562: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2563: ['','bottom','middle','top','left','right'],$token,5);
2564: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2565: ['', 'parbox', 'parpic'], $token, 2);
2566: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2567: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2568: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2569: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2570: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2571:
2572:
2573: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2574: if ($width) { $currentstring.=' width="'.$width.'" '; }
2575: if ($height) { $currentstring.=' height="'.$height.'" '; }
2576: $currentstring .= ' />';
2577: } elsif ($target eq 'modified') {
2578: my ($osrc,$owidth,$oheight)=
2579: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2580: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2581: $safeeval,'src','alt','align',
2582: 'TeXwidth','TeXheight', 'TeXwrap',
2583: 'width','height');
2584: my ($nsrc,$nwidth,$nheight)=
2585: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2586: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2587: &image_replication($loc);
2588: my ($iwidth,$iheight);
2589: if (-e $loc) {
2590: my $image = Image::Magick->new;
2591: $image->Read($loc);
2592: ($iwidth, $iheight) = ($image->Get('width'),
2593: $image->Get('height'));
2594: }
2595: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2596: # changed image or no size specified,
2597: # if they didn't explicitly change the
2598: # width or height use the ones from the image
2599: if ($iwidth && $iheight) {
2600: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2601: $token->[2]{'width'} = $iwidth;$ctag=1;
2602: }
2603: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2604: $token->[2]{'height'}=$iheight;$ctag=1;
2605: }
2606: }
2607: }
2608: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2609: # if we don't have a width or height
2610: if ($iwidth && $cwidth && !$cheight) {
2611: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2612: }
2613: if ($iheight && $cheight && !$cwidth) {
2614: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2615: }
2616: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2617: }
2618: return $currentstring;
2619: }
2620:
2621: sub end_img {
2622: my ($target,$token) = @_;
2623: my $currentstring = '';
2624: if ($target eq 'web') {
2625: $currentstring = $token->[2];
2626: } elsif ($target eq 'tex') {
2627: $currentstring = '';
2628: }
2629: return $currentstring;
2630: }
2631:
2632: #-- <applet> tag (end tag required)
2633: sub start_applet {
2634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2635:
2636: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2637: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2638:
2639: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2640: undef,1);
2641: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2642:
2643: my $currentstring = '';
2644: if ($target eq 'web') {
2645: if ($ENV{'browser.appletsuppress'} ne 'on') {
2646: $currentstring = &Apache::lonenc::encrypt_ref($token,
2647: {'code'=>$code,
2648: 'archive'=>$archive}
2649: );
2650: } else {
2651: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2652: $safeeval,undef,1);
2653: unless ($alttag) {
2654: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2655: $code);
2656: }
2657: $currentstring='[APPLET: '.$alttag.']';
2658: }
2659: } elsif ($target eq 'tex') {
2660: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2661: $safeeval,undef,1);
2662: unless ($alttag) {
2663: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2664: undef,1);
2665: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2666: $code);
2667: }
2668: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2669: '.}\end{center}';
2670: }
2671: return $currentstring;
2672: }
2673:
2674: sub end_applet {
2675: my ($target,$token) = @_;
2676: my $currentstring = '';
2677: if ($target eq 'web') {
2678: $currentstring = $token->[2];
2679: } elsif ($target eq 'tex') {
2680: }
2681: return $currentstring;
2682: }
2683:
2684: #-- <embed> tag (end tag optional/required)
2685: sub start_embed {
2686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2687: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2688: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2689: my $currentstring = '';
2690: if ($target eq 'web') {
2691: if ($ENV{'browser.embedsuppress'} ne 'on') {
2692: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2693: } else {
2694: my $alttag=&Apache::lonxml::get_param
2695: ('alt',$parstack,$safeeval,undef,1);
2696: unless ($alttag) {
2697: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2698: }
2699: $currentstring='[EMBED: '.$alttag.']';
2700: }
2701: } elsif ($target eq 'tex') {
2702: }
2703: return $currentstring;
2704: }
2705:
2706: sub end_embed {
2707: my ($target,$token) = @_;
2708: my $currentstring = '';
2709: if ($target eq 'web') {
2710: $currentstring = $token->[2];
2711: } elsif ($target eq 'tex') {
2712: }
2713: return $currentstring;
2714: }
2715:
2716: #-- <param> tag (end tag forbidden)
2717: sub start_param {
2718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2719: if (&Apache::lonxml::get_param
2720: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2721: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2722: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2723: }
2724: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2725: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2726: my $currentstring = '';
2727: if ($target eq 'web') {
2728: my %toconvert;
2729: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2730: if ($src) { $toconvert{'src'}= $src; }
2731: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2732: undef,1);
2733: if ($name=~/^cabbase$/i) {
2734: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2735: $safeeval,undef,1);
2736: }
2737: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2738: } elsif ($target eq 'tex') {
2739: }
2740: return $currentstring;
2741: }
2742:
2743: sub end_param {
2744: my ($target,$token) = @_;
2745: my $currentstring = '';
2746: if ($target eq 'web') {
2747: $currentstring = $token->[2];
2748: } elsif ($target eq 'tex') {
2749: }
2750: return $currentstring;
2751: }
2752:
2753: #-- <allow> tag
2754: sub start_allow {
2755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2756: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2757: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2758: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2759: &Apache::lonnet::clutter($src);
2760: if ($target eq 'tex') { &image_replication($src); }
2761: my $result;
2762: if ($target eq 'edit') {
2763: $result .=&Apache::edit::tag_start($target,$token);
2764: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2765: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2766: } elsif ($target eq 'modified') {
2767: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2768: $safeeval,'src');
2769: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2770: }
2771: return $result;
2772: }
2773:
2774: sub end_allow {
2775: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2776: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2777: return '';
2778: }
2779:
2780: #-- Frames (end tag required)
2781: #-- <frameset>
2782: sub start_frameset {
2783: my ($target,$token) = @_;
2784: my $currentstring = '';
2785: if ($target eq 'web') {
2786: if (!$Apache::lonxml::registered &&
2787: $ENV{'request.state'} eq 'published') {
2788: $currentstring.='<head>'.
2789: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2790: }
2791: my $onLoad='';
2792: foreach my $key (keys(%{$token->[2]})) {
2793: if ($key =~ /^onload$/i) {
2794: $onLoad.=$token->[2]->{$key}.';';
2795: delete($token->[2]->{$key});
2796: }
2797: }
2798: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2799: my $onUnload='';
2800: foreach my $key (keys(%{$token->[2]})) {
2801: if ($key =~ /^onunload$/i) {
2802: $onUnload.=$token->[2]->{$key}.';';
2803: delete($token->[2]->{$key});
2804: }
2805: }
2806: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2807: ';'.$onUnload;
2808:
2809: $currentstring .= '<'.$token->[1];
2810: foreach (keys %{$token->[2]}) {
2811: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2812: }
2813: $currentstring.='>';
2814: }
2815: return $currentstring;
2816: }
2817:
2818: sub end_frameset {
2819: my ($target,$token) = @_;
2820: my $currentstring = '';
2821: if ($target eq 'web') {
2822: $currentstring = $token->[2];
2823: }
2824: return $currentstring;
2825: }
2826:
2827: #-- <xmp> (end tag required)
2828: sub start_xmp {
2829: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2830: my $currentstring = '';
2831: if ($target eq 'web') {
2832: $currentstring .= $token->[4];
2833: } elsif ($target eq 'tex') {
2834: $currentstring .= '\begin{verbatim}';
2835: }
2836: return $currentstring;
2837: }
2838:
2839: sub end_xmp {
2840: my ($target,$token) = @_;
2841: my $currentstring = '';
2842: if ($target eq 'web') {
2843: $currentstring .= $token->[2];
2844: } elsif ($target eq 'tex') {
2845: $currentstring .= '\end{verbatim}';
2846: }
2847: return $currentstring;
2848: }
2849:
2850: #-- <pre> (end tag required)
2851: sub start_pre {
2852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2853: my $currentstring = '';
2854: if ($target eq 'web') {
2855: $currentstring .= $token->[4];
2856: } elsif ($target eq 'tex') {
2857: $currentstring .= '\begin{verbatim}';
2858: }
2859: return $currentstring;
2860: }
2861:
2862: sub end_pre {
2863: my ($target,$token) = @_;
2864: my $currentstring = '';
2865: if ($target eq 'web') {
2866: $currentstring .= $token->[2];
2867: } elsif ($target eq 'tex') {
2868: $currentstring .= '\end{verbatim}';
2869: }
2870: return $currentstring;
2871: }
2872:
2873: #-- <insert>
2874: sub start_insert {
2875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2876: my $currentstring = '';
2877: if ($target eq 'web') {
2878: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2879: $currentstring .= '<b>'.$display.'</b>';;
2880: }
2881: return $currentstring;
2882: }
2883:
2884: sub end_insert {
2885: my ($target,$token) = @_;
2886: my $currentstring = '';
2887: if ($target eq 'web') {
2888: $currentstring .= '';
2889: }
2890: return $currentstring;
2891: }
2892:
2893: #-- <externallink>
2894: sub start_externallink {
2895: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2896: my $currentstring = '';
2897: if ($target eq 'web') {
2898: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2899: $currentstring .= '<b>'.$display.'</b>';;
2900: }
2901: return $currentstring;
2902: }
2903:
2904: sub end_externallink {
2905: my ($target,$token) = @_;
2906: my $currentstring = '';
2907: if ($target eq 'web') {
2908: $currentstring .= '';
2909: }
2910: return $currentstring;
2911: }
2912:
2913: #-- <blankspace heigth="">
2914: sub start_blankspace {
2915: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2916: my $currentstring = '';
2917: if ($target eq 'tex') {
2918: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2919: $currentstring .= '\vskip '.$howmuch.' ';
2920: }
2921: return $currentstring;
2922: }
2923:
2924: sub end_blankspace {
2925: my ($target,$token) = @_;
2926: my $currentstring = '';
2927: if ($target eq 'tex') {
2928: $currentstring .= '';
2929: }
2930: return $currentstring;
2931: }
2932:
2933: #-- <abbr> tag (end tag required)
2934: sub start_abbr {
2935: my ($target,$token) = @_;
2936: my $currentstring = '';
2937: if ($target eq 'web') {
2938: $currentstring = $token->[4];
2939: }
2940: return $currentstring;
2941: }
2942:
2943: sub end_abbr {
2944: my ($target,$token) = @_;
2945: my $currentstring = '';
2946: if ($target eq 'web') {
2947: $currentstring = $token->[2];
2948: }
2949: return $currentstring;
2950: }
2951:
2952: #-- <acronym> tag (end tag required)
2953: sub start_acronym {
2954: my ($target,$token) = @_;
2955: my $currentstring = '';
2956: if ($target eq 'web') {
2957: $currentstring = $token->[4];
2958: }
2959: return $currentstring;
2960: }
2961:
2962: sub end_acronym {
2963: my ($target,$token) = @_;
2964: my $currentstring = '';
2965: if ($target eq 'web') {
2966: $currentstring = $token->[2];
2967: }
2968: return $currentstring;
2969: }
2970:
2971: #-- <area> tag (end tag forbidden)
2972: sub start_area {
2973: my ($target,$token) = @_;
2974: my $currentstring = '';
2975: if ($target eq 'web') {
2976: $currentstring = $token->[4];
2977: }
2978: return $currentstring;
2979: }
2980:
2981: sub end_area {
2982: my ($target,$token) = @_;
2983: my $currentstring = '';
2984: if ($target eq 'web') {
2985: $currentstring = $token->[2];
2986: }
2987: return $currentstring;
2988: }
2989:
2990: #-- <base> tag (end tag forbidden)
2991: sub start_base {
2992: my ($target,$token) = @_;
2993: my $currentstring = '';
2994: if ($target eq 'web') {
2995: $currentstring = $token->[4];
2996: }
2997: return $currentstring;
2998: }
2999:
3000: sub end_base {
3001: my ($target,$token) = @_;
3002: my $currentstring = '';
3003: if ($target eq 'web') {
3004: $currentstring = $token->[2];
3005: }
3006: return $currentstring;
3007: }
3008:
3009: #-- <bdo> tag (end tag required)
3010: sub start_bdo {
3011: my ($target,$token) = @_;
3012: my $currentstring = '';
3013: if ($target eq 'web') {
3014: $currentstring = $token->[4];
3015: }
3016: return $currentstring;
3017: }
3018:
3019: sub end_bdo {
3020: my ($target,$token) = @_;
3021: my $currentstring = '';
3022: if ($target eq 'web') {
3023: $currentstring = $token->[2];
3024: }
3025: return $currentstring;
3026: }
3027:
3028: #-- <bgsound> tag (end tag optional)
3029: sub start_bgsound {
3030: my ($target,$token) = @_;
3031: my $currentstring = '';
3032: if ($target eq 'web') {
3033: $currentstring = $token->[4];
3034: }
3035: return $currentstring;
3036: }
3037:
3038: sub end_bgsound {
3039: my ($target,$token) = @_;
3040: my $currentstring = '';
3041: if ($target eq 'web') {
3042: $currentstring = $token->[2];
3043: }
3044: return $currentstring;
3045: }
3046:
3047: #-- <blink> tag (end tag required)
3048: sub start_blink {
3049: my ($target,$token) = @_;
3050: my $currentstring = '';
3051: if ($target eq 'web') {
3052: $currentstring = $token->[4];
3053: }
3054: return $currentstring;
3055: }
3056:
3057: sub end_blink {
3058: my ($target,$token) = @_;
3059: my $currentstring = '';
3060: if ($target eq 'web') {
3061: $currentstring = $token->[2];
3062: }
3063: return $currentstring;
3064: }
3065:
3066: #-- <blockquote> tag (end tag required)
3067: sub start_blockquote {
3068: my ($target,$token) = @_;
3069: my $currentstring = '';
3070: if ($target eq 'web') {
3071: $currentstring = $token->[4];
3072: }
3073: return $currentstring;
3074: }
3075:
3076: sub end_blockquote {
3077: my ($target,$token) = @_;
3078: my $currentstring = '';
3079: if ($target eq 'web') {
3080: $currentstring = $token->[2];
3081: }
3082: return $currentstring;
3083: }
3084:
3085: #-- <button> tag (end tag required)
3086: sub start_button {
3087: my ($target,$token) = @_;
3088: my $currentstring = '';
3089: if ($target eq 'web') {
3090: $currentstring = $token->[4];
3091: }
3092: return $currentstring;
3093: }
3094:
3095: sub end_button {
3096: my ($target,$token) = @_;
3097: my $currentstring = '';
3098: if ($target eq 'web') {
3099: $currentstring = $token->[2];
3100: }
3101: return $currentstring;
3102: }
3103:
3104: #-- <caption> tag (end tag required)
3105: sub start_caption {
3106: my ($target,$token) = @_;
3107: my $currentstring = '';
3108: if ($target eq 'web') {
3109: $currentstring = $token->[4];
3110: }
3111: return $currentstring;
3112: }
3113:
3114: sub end_caption {
3115: my ($target,$token) = @_;
3116: my $currentstring = '';
3117: if ($target eq 'web') {
3118: $currentstring = $token->[2];
3119: }
3120: return $currentstring;
3121: }
3122:
3123: #-- <col> tag (end tag forbdden)
3124: sub start_col {
3125: my ($target,$token) = @_;
3126: my $currentstring = '';
3127: if ($target eq 'web') {
3128: $currentstring = $token->[4];
3129: }
3130: return $currentstring;
3131: }
3132:
3133: sub end_col {
3134: my ($target,$token) = @_;
3135: my $currentstring = '';
3136: if ($target eq 'web') {
3137: $currentstring = $token->[2];
3138: }
3139: return $currentstring;
3140: }
3141:
3142: #-- <colgroup> tag (end tag optional)
3143: sub start_colgroup {
3144: my ($target,$token) = @_;
3145: my $currentstring = '';
3146: if ($target eq 'web') {
3147: $currentstring = $token->[4];
3148: }
3149: return $currentstring;
3150: }
3151:
3152: sub end_colgroup {
3153: my ($target,$token) = @_;
3154: my $currentstring = '';
3155: if ($target eq 'web') {
3156: $currentstring = $token->[2];
3157: }
3158: return $currentstring;
3159: }
3160:
3161: #-- <del> tag (end tag required)
3162: sub start_del {
3163: my ($target,$token) = @_;
3164: my $currentstring = '';
3165: if ($target eq 'web') {
3166: $currentstring = $token->[4];
3167: }
3168: return $currentstring;
3169: }
3170:
3171: sub end_del {
3172: my ($target,$token) = @_;
3173: my $currentstring = '';
3174: if ($target eq 'web') {
3175: $currentstring = $token->[2];
3176: }
3177: return $currentstring;
3178: }
3179:
3180: #-- <fieldset> tag (end tag required)
3181: sub start_fieldset {
3182: my ($target,$token) = @_;
3183: my $currentstring = '';
3184: if ($target eq 'web') {
3185: $currentstring = $token->[4];
3186: }
3187: return $currentstring;
3188: }
3189:
3190: sub end_fieldset {
3191: my ($target,$token) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web') {
3194: $currentstring = $token->[2];
3195: }
3196: return $currentstring;
3197: }
3198:
3199: #-- <frame> tag (end tag forbidden)
3200: sub start_frame {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web') {
3204: $currentstring = $token->[4];
3205: }
3206: return $currentstring;
3207: }
3208:
3209: sub end_frame {
3210: my ($target,$token) = @_;
3211: my $currentstring = '';
3212: if ($target eq 'web') {
3213: $currentstring = $token->[2];
3214: }
3215: return $currentstring;
3216: }
3217:
3218: #-- <iframe> tag (end tag required)
3219: sub start_iframe {
3220: my ($target,$token) = @_;
3221: my $currentstring = '';
3222: if ($target eq 'web') {
3223: $currentstring = $token->[4];
3224: }
3225: return $currentstring;
3226: }
3227:
3228: sub end_iframe {
3229: my ($target,$token) = @_;
3230: my $currentstring = '';
3231: if ($target eq 'web') {
3232: $currentstring = $token->[2];
3233: }
3234: return $currentstring;
3235: }
3236:
3237: #-- <ins> tag (end tag required)
3238: sub start_ins {
3239: my ($target,$token) = @_;
3240: my $currentstring = '';
3241: if ($target eq 'web') {
3242: $currentstring = $token->[4];
3243: }
3244: return $currentstring;
3245: }
3246:
3247: sub end_ins {
3248: my ($target,$token) = @_;
3249: my $currentstring = '';
3250: if ($target eq 'web') {
3251: $currentstring = $token->[2];
3252: }
3253: return $currentstring;
3254: }
3255:
3256: #-- <isindex> tag (end tag forbidden)
3257: sub start_isindex {
3258: my ($target,$token) = @_;
3259: my $currentstring = '';
3260: if ($target eq 'web') {
3261: $currentstring = $token->[4];
3262: }
3263: return $currentstring;
3264: }
3265:
3266: sub end_isindex {
3267: my ($target,$token) = @_;
3268: my $currentstring = '';
3269: if ($target eq 'web') {
3270: $currentstring = $token->[2];
3271: }
3272: return $currentstring;
3273: }
3274:
3275: #-- <keygen> tag (end tag forbidden)
3276: sub start_keygen {
3277: my ($target,$token) = @_;
3278: my $currentstring = '';
3279: if ($target eq 'web') {
3280: $currentstring = $token->[4];
3281: }
3282: return $currentstring;
3283: }
3284:
3285: sub end_keygen {
3286: my ($target,$token) = @_;
3287: my $currentstring = '';
3288: if ($target eq 'web') {
3289: $currentstring = $token->[2];
3290: }
3291: return $currentstring;
3292: }
3293:
3294: #-- <label> tag
3295: sub start_label {
3296: my ($target,$token) = @_;
3297: my $currentstring = '';
3298: if ($target eq 'web') {
3299: $currentstring = $token->[4];
3300: }
3301: return $currentstring;
3302: }
3303:
3304: sub end_label {
3305: my ($target,$token) = @_;
3306: my $currentstring = '';
3307: if ($target eq 'web') {
3308: $currentstring = $token->[2];
3309: }
3310: return $currentstring;
3311: }
3312:
3313: #-- <layer> tag (end tag required)
3314: sub start_layer {
3315: my ($target,$token) = @_;
3316: my $currentstring = '';
3317: if ($target eq 'web') {
3318: $currentstring = $token->[4];
3319: }
3320: return $currentstring;
3321: }
3322:
3323: sub end_layer {
3324: my ($target,$token) = @_;
3325: my $currentstring = '';
3326: if ($target eq 'web') {
3327: $currentstring = $token->[2];
3328: }
3329: return $currentstring;
3330: }
3331:
3332: #-- <legend> tag (end tag required)
3333: sub start_legend {
3334: my ($target,$token) = @_;
3335: my $currentstring = '';
3336: if ($target eq 'web') {
3337: $currentstring = $token->[4];
3338: }
3339: return $currentstring;
3340: }
3341:
3342: sub end_legend {
3343: my ($target,$token) = @_;
3344: my $currentstring = '';
3345: if ($target eq 'web') {
3346: $currentstring = $token->[2];
3347: }
3348: return $currentstring;
3349: }
3350:
3351: #-- <link> tag (end tag forbidden)
3352: sub start_link {
3353: my ($target,$token) = @_;
3354: my $currentstring = '';
3355: if ($target eq 'web') {
3356: $currentstring = $token->[4];
3357: }
3358: return $currentstring;
3359: }
3360:
3361: sub end_link {
3362: my ($target,$token) = @_;
3363: my $currentstring = '';
3364: if ($target eq 'web') {
3365: $currentstring = $token->[2];
3366: }
3367: return $currentstring;
3368: }
3369:
3370: #-- <marquee> tag (end tag optional)
3371: sub start_marquee {
3372: my ($target,$token) = @_;
3373: my $currentstring = '';
3374: if ($target eq 'web') {
3375: $currentstring = $token->[4];
3376: }
3377: return $currentstring;
3378: }
3379:
3380: sub end_marquee {
3381: my ($target,$token) = @_;
3382: my $currentstring = '';
3383: if ($target eq 'web') {
3384: $currentstring = $token->[2];
3385: }
3386: return $currentstring;
3387: }
3388:
3389: #-- <multicol> tag (end tag required)
3390: sub start_multicol {
3391: my ($target,$token) = @_;
3392: my $currentstring = '';
3393: if ($target eq 'web') {
3394: $currentstring = $token->[4];
3395: }
3396: return $currentstring;
3397: }
3398:
3399: sub end_multicol {
3400: my ($target,$token) = @_;
3401: my $currentstring = '';
3402: if ($target eq 'web') {
3403: $currentstring = $token->[2];
3404: }
3405: return $currentstring;
3406: }
3407:
3408: #-- <nobr> tag (end tag required)
3409: sub start_nobr {
3410: my ($target,$token) = @_;
3411: my $currentstring = '';
3412: if ($target eq 'web') {
3413: $currentstring = $token->[4];
3414: } elsif ($target eq 'tex') {
3415: $currentstring='\mbox{';
3416: }
3417: return $currentstring;
3418: }
3419:
3420: sub end_nobr {
3421: my ($target,$token) = @_;
3422: my $currentstring = '';
3423: if ($target eq 'web') {
3424: $currentstring = $token->[2];
3425: } elsif ($target eq 'tex') {
3426: $currentstring='}';
3427: }
3428: return $currentstring;
3429: }
3430:
3431: #-- <noembed> tag (end tag required)
3432: sub start_noembed {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web') {
3436: $currentstring = $token->[4];
3437: }
3438: return $currentstring;
3439: }
3440:
3441: sub end_noembed {
3442: my ($target,$token) = @_;
3443: my $currentstring = '';
3444: if ($target eq 'web') {
3445: $currentstring = $token->[2];
3446: }
3447: return $currentstring;
3448: }
3449:
3450: #-- <noframes> tag (end tag required)
3451: sub start_noframes {
3452: my ($target,$token) = @_;
3453: my $currentstring = '';
3454: if ($target eq 'web') {
3455: $currentstring = $token->[4];
3456: }
3457: return $currentstring;
3458: }
3459:
3460: sub end_noframes {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web') {
3464: $currentstring = $token->[2];
3465: }
3466: return $currentstring;
3467: }
3468:
3469: #-- <nolayer> tag (end tag required)
3470: sub start_nolayer {
3471: my ($target,$token) = @_;
3472: my $currentstring = '';
3473: if ($target eq 'web') {
3474: $currentstring = $token->[4];
3475: }
3476: return $currentstring;
3477: }
3478:
3479: sub end_nolayer {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web') {
3483: $currentstring = $token->[2];
3484: }
3485: return $currentstring;
3486: }
3487:
3488: #-- <noscript> tag (end tag required)
3489: sub start_noscript {
3490: my ($target,$token) = @_;
3491: my $currentstring = '';
3492: if ($target eq 'web') {
3493: $currentstring = $token->[4];
3494: }
3495: return $currentstring;
3496: }
3497:
3498: sub end_noscript {
3499: my ($target,$token) = @_;
3500: my $currentstring = '';
3501: if ($target eq 'web') {
3502: $currentstring = $token->[2];
3503: }
3504: return $currentstring;
3505: }
3506:
3507: #-- <object> tag (end tag required)
3508: sub start_object {
3509: my ($target,$token) = @_;
3510: my $currentstring = '';
3511: if ($target eq 'web') {
3512: $currentstring = $token->[4];
3513: }
3514: return $currentstring;
3515: }
3516:
3517: sub end_object {
3518: my ($target,$token) = @_;
3519: my $currentstring = '';
3520: if ($target eq 'web') {
3521: $currentstring = $token->[2];
3522: }
3523: return $currentstring;
3524: }
3525:
3526: #-- <optgroup> tag (end tag required)
3527: sub start_optgroup {
3528: my ($target,$token) = @_;
3529: my $currentstring = '';
3530: if ($target eq 'web') {
3531: $currentstring = $token->[4];
3532: }
3533: return $currentstring;
3534: }
3535:
3536: sub end_optgroup {
3537: my ($target,$token) = @_;
3538: my $currentstring = '';
3539: if ($target eq 'web') {
3540: $currentstring = $token->[2];
3541: }
3542: return $currentstring;
3543: }
3544:
3545: #-- <samp> tag (end tag required)
3546: sub start_samp {
3547: my ($target,$token) = @_;
3548: my $currentstring = '';
3549: if ($target eq 'web') {
3550: $currentstring = $token->[4];
3551: } elsif ($target eq 'tex') {
3552: $currentstring='\texttt{';
3553: }
3554: return $currentstring;
3555: }
3556:
3557: sub end_samp {
3558: my ($target,$token) = @_;
3559: my $currentstring = '';
3560: if ($target eq 'web') {
3561: $currentstring = $token->[2];
3562: } elsif ($target eq 'tex') {
3563: $currentstring='}';
3564: }
3565: return $currentstring;
3566: }
3567:
3568: #-- <server> tag
3569: sub start_server {
3570: my ($target,$token) = @_;
3571: my $currentstring = '';
3572: if ($target eq 'web') {
3573: $currentstring = $token->[4];
3574: }
3575: return $currentstring;
3576: }
3577:
3578: sub end_server {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web') {
3582: $currentstring = $token->[2];
3583: }
3584: return $currentstring;
3585: }
3586:
3587: #-- <spacer> tag (end tag forbidden)
3588: sub start_spacer {
3589: my ($target,$token) = @_;
3590: my $currentstring = '';
3591: if ($target eq 'web') {
3592: $currentstring = $token->[4];
3593: }
3594: return $currentstring;
3595: }
3596:
3597: sub end_spacer {
3598: my ($target,$token) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web') {
3601: $currentstring = $token->[2];
3602: }
3603: return $currentstring;
3604: }
3605:
3606: #-- <span> tag (end tag required)
3607: sub start_span {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'web') {
3611: $currentstring = $token->[4];
3612: }
3613: return $currentstring;
3614: }
3615:
3616: sub end_span {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web') {
3620: $currentstring = $token->[2];
3621: }
3622: return $currentstring;
3623: }
3624:
3625: #-- <tbody> tag (end tag optional)
3626: sub start_tbody {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web') {
3630: $currentstring = $token->[4];
3631: }
3632: return $currentstring;
3633: }
3634:
3635: sub end_tbody {
3636: my ($target,$token) = @_;
3637: my $currentstring = '';
3638: if ($target eq 'web') {
3639: $currentstring = $token->[2];
3640: }
3641: return $currentstring;
3642: }
3643:
3644: #-- <tfoot> tag (end tag optional)
3645: sub start_tfoot {
3646: my ($target,$token) = @_;
3647: my $currentstring = '';
3648: if ($target eq 'web') {
3649: $currentstring = $token->[4];
3650: }
3651: return $currentstring;
3652: }
3653:
3654: sub end_tfoot {
3655: my ($target,$token) = @_;
3656: my $currentstring = '';
3657: if ($target eq 'web') {
3658: $currentstring = $token->[2];
3659: }
3660: return $currentstring;
3661: }
3662:
3663: #-- <thead> tag (end tag optional)
3664: sub start_thead {
3665: my ($target,$token) = @_;
3666: my $currentstring = '';
3667: if ($target eq 'web') {
3668: $currentstring = $token->[4];
3669: }
3670: return $currentstring;
3671: }
3672:
3673: sub end_thead {
3674: my ($target,$token) = @_;
3675: my $currentstring = '';
3676: if ($target eq 'web') {
3677: $currentstring = $token->[2];
3678: }
3679: return $currentstring;
3680: }
3681:
3682: #-- <var> tag
3683: sub start_var {
3684: my ($target,$token) = @_;
3685: my $currentstring = '';
3686: if ($target eq 'web') {
3687: $currentstring = $token->[4];
3688: } elsif ($target eq 'tex') {
3689: $currentstring = '\textit{';
3690: }
3691: return $currentstring;
3692: }
3693:
3694: sub end_var {
3695: my ($target,$token) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web') {
3698: $currentstring = $token->[2];
3699: } elsif ($target eq 'tex') {
3700: $currentstring = '}';
3701: }
3702: return $currentstring;
3703: }
3704:
3705: #-- <wbr> tag (end tag forbidden)
3706: sub start_wbr {
3707: my ($target,$token) = @_;
3708: my $currentstring = '';
3709: if ($target eq 'web') {
3710: $currentstring = $token->[4];
3711: }
3712: return $currentstring;
3713: }
3714:
3715: sub end_wbr {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web') {
3719: $currentstring = $token->[2];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: #-- <hideweboutput> tag
3725: sub start_hideweboutput {
3726: my ($target,$token) = @_;
3727: if ($target eq 'web') {
3728: &Apache::lonxml::startredirection();
3729: }
3730: return '';
3731: }
3732:
3733: sub end_hideweboutput {
3734: my ($target,$token) = @_;
3735: my $currentstring = '';
3736: if ($target eq 'web') {
3737: $currentstring = &Apache::lonxml::endredirection();
3738: }
3739: return '';
3740: }
3741:
3742:
3743: sub image_replication {
3744: my $src = shift;
3745: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3746: #replicates eps or ps
3747: my $epssrc = my $pssrc = $src;
3748: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3749: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3750: if (not -e $epssrc && not -e $pssrc) {
3751: my $result=&Apache::lonnet::repcopy($epssrc);
3752: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3753: }
3754: return '';
3755: }
3756:
3757: sub image_size {
3758: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3759: #size of image from gif/jpg/jpeg/png
3760: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3761: my $image = Image::Magick->new;
3762: my $current_figure = $image->Read($src);
3763: my $width_param = $image->Get('width') * $scaling;;
3764: my $height_param = $image->Get('height') * $scaling;;
3765: undef($image);
3766: #do we have any specified LaTeX size of the picture?
3767: my $toget='TeXwidth'; if ($cis) { $toget=lc($toget); }
3768: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3769: $safeeval,$depth,$cis);
3770: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3771: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3772: $safeeval,$depth,$cis);
3773: #do we have any specified web size of the picture?
3774: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3775: $depth,1);
3776: if ($TeXwidth) {
3777: my $old_width_param=$width_param;
3778: if ($TeXwidth=~/(\d+)\s*\%/) {
3779: $width_param = $1*$ENV{'form.textwidth'}/100;
3780: } else {
3781: $width_param = $TeXwidth;
3782: }
3783: $height_param=$TeXwidth/$old_width_param*$height_param;
3784: } elsif ($TeXheight) {
3785: $height_param = $TeXheight;
3786: $width_param = $TeXheight/$height_param*$width_param;
3787: } elsif ($width) {
3788: my $old_width_param=$width_param;
3789: $width_param = $width*$scaling;
3790: $height_param=$width_param/$old_width_param*$height_param;
3791: }
3792: if ($width_param > $ENV{'form.textwidth'}) {
3793: my $old_width_param=$width_param;
3794: $width_param =0.95*$ENV{'form.textwidth'};
3795: $height_param=$width_param/$old_width_param*$height_param;
3796: }
3797: return ($height_param, $width_param);
3798: }
3799:
3800: sub image_width {
3801: my ($height, $width) = &image_size(@_);
3802: return $width;
3803: }
3804: # Not yet 100% sure this is correct in all circumstances..
3805: # due to my uncertainty about mods to image_size.
3806: #
3807: sub image_height {
3808: my ($height, $width) = &image_size(@_);
3809: return $height;
3810: }
3811:
3812: sub get_eps_image {
3813: my ($src)=@_;
3814: my $orig_src=$src;
3815: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3816: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3817: if (! -e $src) {
3818: if (&Apache::lonnet::repcopy($src) ne OK ) {
3819: #if replication failed try to find ps file
3820: $src=~s/\.eps$/\.ps/;
3821: #if no ps file try to replicate it
3822: if (not -e $src &&
3823: &Apache::lonnet::repcopy($src) ne OK) {
3824: #if replication failed try to produce eps file dynamically
3825: $src=~s/\.ps$/\.eps/;
3826: my $temp_file;
3827: open(FILE,">>/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat");
3828: my $newsrc=$orig_src;
3829: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
3830: print FILE "$newsrc\n";
3831: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
3832: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
3833: }
3834: }
3835: }
3836: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
3837: return ($path.'/',$file);
3838: }
3839:
3840: sub eps_generation {
3841: my ($src,$file,$width_param) = @_;
3842: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3843: my $temp_file = Apache::File->new('>>'.$filename);
3844: print $temp_file "$src\n";
3845: my $newsrc = $src;
3846: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3847: $newsrc=~s/\/home\/httpd\/html\/res//;
3848: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3849: $newsrc=~s/\/\.\//\//;
3850: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3851: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3852: $newsrc=~s/\/home\/httpd\/lonUsers//;
3853: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3854: }
3855: if ($newsrc=~/\/userfiles\//) {
3856: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3857: } else {
3858: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3859: }
3860: }
3861:
3862: sub file_path {
3863: my $src=shift;
3864: my ($file,$path);
3865: if ($src =~ m!(.*)/([^/]*)$!) {
3866: $file = $2;
3867: $path = $1.'/';
3868: }
3869: return $file,$path;
3870: }
3871:
3872: sub recalc {
3873: my $argument = shift;
3874: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3875: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3876: my $value=$1;
3877: my $units=$2;
3878: if ($units eq 'cm') {
3879: $value*=10;
3880: } elsif ($units eq 'in') {
3881: $value*=25.4;
3882: } elsif ($units eq 'pc') {
3883: $value*=(25.4*12/72.27);
3884: } elsif ($units eq 'pt') {
3885: $value*=(25.4/72.27);
3886: }
3887: return $value.' mm';
3888: }
3889:
3890: sub LATEX_length {
3891: my $garbage=shift;
3892: $garbage=~s/^\s+$//;
3893: $garbage=~s/^\s+(\S.*)/$1/;#space before
3894: $garbage=~s/(.*\S)\s+$/$1/;#space after
3895: $garbage=~s/(\s)+/$1/;#only one space
3896: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3897: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3898: $garbage=~s/([^\\])\$/$1/g;#$
3899: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3900: $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;
3901: $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;
3902: $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;
3903: $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;
3904: $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;
3905: $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;
3906: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3907: #remove some other LaTeX command
3908: $garbage=~s|\\(\w+)\\|\\|g;
3909: $garbage=~s|\\(\w+)(\s*)|$2|g;
3910: $garbage=~s|\+|11|g;
3911: my $value=length($garbage);
3912: return $value;
3913: }
3914:
3915:
3916:
3917:
3918: 1;
3919: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to londefdef.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / xml