1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.265 2005/03/31 15:54:33 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: $currentstring .= '\documentclass[letterpaper]{article}';
160: if (($ENV{'form.latex_type'}=~'batchmode') ||
161: (!$ENV{'request.role.adv'})) {$currentstring .='\batchmode';}
162: $currentstring .= '\newcommand{\keephidden}[1]{}'.
163: '\renewcommand{\deg}{$^{\circ}$}'.
164: '\usepackage{longtable}'.
165: '\usepackage{textcomp}'.
166: '\usepackage{makeidx}'.
167: '\usepackage[dvips]{graphicx}'.
168: '\usepackage{picins}'.
169: '\usepackage{epsfig}'.
170: '\usepackage{calc}'.
171: '\usepackage{amsmath}'.
172: '\usepackage{amssymb}'.
173: '\usepackage{amsfonts}'.
174: '\usepackage{amsthm}'.
175: '\usepackage{amscd}'.
176: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
177: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
178: }
179: return $currentstring;
180: }
181:
182: sub end_html {
183: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
184: my $currentstring = '';
185: if ($target eq 'web') {
186: $currentstring = '</html>';
187: }
188: return $currentstring;
189: }
190:
191: #-- <head> tag (end tag optional)
192: sub start_head {
193: my ($target,$token) = @_;
194: my $currentstring = '';
195: if ($target eq 'web') {
196: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
197: }
198: return $currentstring;
199: }
200:
201: sub end_head {
202: my ($target,$token) = @_;
203: my $currentstring = '';
204: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
205: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
206: $token->[2];
207: }
208: return $currentstring;
209: }
210:
211: #-- <map> tag (end tag required)
212: sub start_map {
213: my ($target,$token) = @_;
214: my $currentstring = '';
215: if ($target eq 'web') {
216: $currentstring = $token->[4];
217: }
218: return $currentstring;
219: }
220:
221: sub end_map {
222: my ($target,$token) = @_;
223: my $currentstring = '';
224: if ($target eq 'web') {
225: $currentstring = $token->[2];
226: }
227: return $currentstring;
228: }
229:
230: #-- <select> tag (end tag required)
231: sub start_select {
232: my ($target,$token) = @_;
233: my $currentstring = '';
234: if ($target eq 'web') {
235: $currentstring = $token->[4];
236: } elsif ($target eq 'tex') {
237: $Apache::londefdef::select=0;
238: }
239: return $currentstring;
240: }
241:
242: sub end_select {
243: my ($target,$token) = @_;
244: my $currentstring = '';
245: if ($target eq 'web') {
246: $currentstring = $token->[2];
247: }
248: return $currentstring;
249: }
250:
251: #-- <option> tag (end tag optional)
252: sub start_option {
253: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
254: my $currentstring = '';
255: if ($target eq 'web') {
256: $currentstring = $token->[4];
257: } elsif ($target eq 'tex') {
258: $Apache::londefdef::select++;
259: if ($Apache::londefdef::select == 1) {
260: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
261: } else {
262: $currentstring='\keephidden{';
263: }
264: }
265: return $currentstring;
266: }
267:
268: sub end_option {
269: my ($target,$token) = @_;
270: my $currentstring = '';
271: if ($target eq 'web') {
272: $currentstring = $token->[2];
273: } elsif ($target eq 'tex') {
274: $currentstring='}';
275: }
276: return $currentstring;
277: }
278:
279: #-- <input> tag (end tag forbidden)
280: sub start_input {
281: my ($target,$token) = @_;
282: my $currentstring = '';
283: if ($target eq 'web') {
284: $currentstring = $token->[4];
285: }
286: return $currentstring;
287: }
288:
289: sub end_input {
290: my ($target,$token) = @_;
291: my $currentstring = '';
292: if ($target eq 'web') {
293: $currentstring = $token->[2];
294: }
295: return $currentstring;
296: }
297:
298: #-- <textarea> tag (end tag required)
299: sub start_textarea {
300: my ($target,$token) = @_;
301: my $currentstring = '';
302: if ($target eq 'web') {
303: $currentstring = $token->[4];
304: }
305: return $currentstring;
306: }
307:
308: sub end_textarea {
309: my ($target,$token) = @_;
310: my $currentstring = '';
311: if ($target eq 'web') {
312: $currentstring = $token->[2];
313: }
314: return $currentstring;
315: }
316:
317: #-- <form> tag (end tag required)
318: sub start_form {
319: my ($target,$token) = @_;
320: my $currentstring = '';
321: if ($target eq 'web') {
322: $currentstring = $token->[4];
323: }
324: return $currentstring;
325: }
326:
327: sub end_form {
328: my ($target,$token) = @_;
329: my $currentstring = '';
330: if ($target eq 'web') {
331: $currentstring = $token->[2];
332: }
333: return $currentstring;
334: }
335:
336: #-- <title> tag (end tag required)
337: sub start_title {
338: my ($target,$token) = @_;
339: my $currentstring = '';
340: if ($target eq 'web') {
341: $currentstring = $token->[4];
342: } elsif ($target eq 'tex') {
343: $currentstring .= '\keephidden{Title of the document: '
344: }
345: if ($target eq 'meta') {
346: $currentstring='<title>';
347: &start_output($target);
348: }
349: return $currentstring;
350: }
351:
352: sub end_title {
353: my ($target,$token) = @_;
354: my $currentstring = '';
355: if ($target eq 'web') {
356: $currentstring = $token->[2];
357: } elsif ($target eq 'tex') {
358: $currentstring .= '}';
359: }
360: if ($target eq 'meta') {
361: &end_output($target);
362: $currentstring='</title>';
363: }
364: return $currentstring;
365: }
366:
367: #-- <meta> tag (end tag forbidden)
368: sub start_meta {
369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
370: my $currentstring = '';
371: if ($target eq 'web') {
372: my $args='';
373: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
374: if ($args eq '') {
375: &Apache::lonxml::get_all_text("/meta",$parser);
376: } else {
377: $currentstring = $token->[4];
378: }
379: } elsif ($target eq 'meta') {
380: unless (&Apache::lonxml::get_param
381: ('http-equiv',$parstack,$safeeval,undef,1)) {
382: my $name=$token->[2]->{'name'};
383: $name=~tr/A-Z/a-z/;
384: $name=~s/\s/\_/gs;
385: $name=~s/\W//gs;
386: if ($name) {
387: $currentstring='<'.$name;
388: my $display=&Apache::lonxml::get_param
389: ('display',$parstack,$safeeval,undef,1);
390: if ($display) {
391: $display=~s/\"/\'/g;
392: $currentstring.=' display="'.$display.'"';
393: }
394: $currentstring.='>'.
395: &Apache::lonxml::get_param
396: ('content',$parstack,$safeeval,undef,1).
397: '</'.$name.'>';
398: }
399: my $display=&Apache::lonxml::get_param
400: ('display',$parstack,$safeeval,undef,1);
401: if ($display) {
402: $display=&HTML::Entities::encode($display,'<>&"');
403: $currentstring.='<'.$name.'.display>'.$display.
404: '</'.$name.'.display>';
405: }
406: }
407: } elsif ($target eq 'tex') {
408: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
409: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
410: if ((not defined $content) && (not defined $name)) {
411: &Apache::lonxml::startredirection();
412: }
413: }
414: return $currentstring;
415: }
416:
417: sub end_meta {
418: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
419: my $currentstring = '';
420: if ($target eq 'web') {
421: my $args='';
422: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
423: if ($args ne '') {
424: $currentstring = $token->[4];
425: }
426: } elsif ($target eq 'tex') {
427: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
428: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
429: if ((not defined $content) && (not defined $name)) {
430: &Apache::lonxml::endredirection();
431: }
432: }
433: return $currentstring;
434: }
435:
436: # accessrule
437: sub start_accessrule {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
439: my $currentstring = '';
440: my $eff=&Apache::lonxml::get_param
441: ('effect',$parstack,$safeeval,undef,1);
442: my $realm=&Apache::lonxml::get_param
443: ('realm',$parstack,$safeeval,undef,1);
444: my $role=&Apache::lonxml::get_param
445: ('role',$parstack,$safeeval,undef,1);
446: $realm=~s/\s+//g;
447: $realm=~s/\//\_/g;
448: $realm=~s/^\_//;
449: $realm=~s/\W/\;/g;
450: $role=~s/\s+//g;
451: $role=~s/\//\_/g;
452: $role=~s/\W/\;/g;
453: if ($target eq 'web') {
454: my $args='';
455: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
456: if ($args eq '') {
457: &Apache::lonxml::get_all_text("/accessrule",$parser);
458: } else {
459: $currentstring = $token->[4];
460: }
461: }
462: if ($target eq 'meta') {
463: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
464: }
465: return $currentstring;
466: }
467:
468: sub end_accessrule {
469: my ($target,$token,$tagstack,$parstack,$parser) = @_;
470: my $currentstring = '';
471: if ($target eq 'web') {
472: my $args='';
473: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
474: if ($args ne '') {
475: $currentstring = $token->[4];
476: }
477: }
478: return $currentstring;
479: }
480:
481: #-- <body> tag (end tag required)
482: sub start_body {
483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
484: my $currentstring = '';
485:
486: if ($target eq 'web') {
487: if ($Apache::lonhomework::parsing_a_problem) {
488: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
489: return '';
490: }
491: if (!$Apache::lonxml::registered &&
492: $ENV{'request.state'} eq 'published') {
493: $currentstring.='<head>'.
494: &Apache::lonmenu::registerurl(undef,$target).'</head>';
495: }
496: # Accessibility
497: if ($ENV{'browser.imagesuppress'} eq 'on') {
498: delete($token->[2]->{'background'});
499: }
500: if ($ENV{'browser.fontenhance'} eq 'on') {
501: my $style='';
502: foreach my $key (keys(%{$token->[2]})) {
503: if ($key =~ /^style$/i) {
504: $style.=$token->[2]->{$key}.';';
505: delete($token->[2]->{$key});
506: }
507: }
508: $token->[2]->{'style'}=$style.'; font-size: x-large;';
509: }
510: if ($ENV{'browser.blackwhite'} eq 'on') {
511: delete($token->[2]->{'font'});
512: delete($token->[2]->{'link'});
513: delete($token->[2]->{'alink'});
514: delete($token->[2]->{'vlink'});
515: delete($token->[2]->{'bgcolor'});
516: delete($token->[2]->{'background'});
517: }
518: # Overload loads
519: my $onLoad='';
520: foreach my $key (keys(%{$token->[2]})) {
521: if ($key =~ /^onload$/i) {
522: $onLoad.=$token->[2]->{$key}.';';
523: delete($token->[2]->{$key});
524: }
525: }
526: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
527: my $onUnload='';
528: foreach my $key (keys(%{$token->[2]})) {
529: if ($key =~ /^onunload$/i) {
530: $onUnload.=$token->[2]->{$key}.';';
531: delete($token->[2]->{$key});
532: }
533: }
534: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
535: ';'.$onUnload;
536:
537: if ($ENV{'request.state'} ne 'construct') {
538: $currentstring .= '<'.$token->[1];
539: }
540: foreach (keys %{$token->[2]}) {
541: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
542: }
543: if ($ENV{'request.state'} ne 'construct') {
544: $currentstring.='>';
545: }
546: if ($ENV{'request.state'} ne 'published') {
547: my $remote=($ENV{'environment.remote'} ne 'off');
548: $currentstring=&Apache::loncommon::bodytag(undef,undef,
549: $currentstring,$remote);
550: $currentstring.=(<<EDITBUTTON);
551: <form method="post">
552: <input type="submit" name="editmode" accesskey="e" value="Edit" />
553: </form>
554: EDITBUTTON
555: } else {
556: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
557: }
558: $currentstring.=&Apache::lonxml::message_location();
559: } elsif ($target eq 'tex') {
560: $currentstring = '\begin{document}';
561: }
562: return $currentstring;
563: }
564:
565: sub end_body {
566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
567: my $currentstring = '';
568: if ($target eq 'web') {
569: $currentstring = &Apache::lonxml::xmlend($target,$parser);
570: } elsif ($target eq 'tex') {
571: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
572: }
573: return $currentstring;
574: }
575:
576: #-- <center> tag (end tag required)
577: sub start_center {
578: my ($target,$token) = @_;
579: my $currentstring = '';
580: if ($target eq 'web') {
581: $currentstring = $token->[4];
582: } elsif ($target eq 'tex') {
583: $currentstring = '\begin{center}';
584: }
585: return $currentstring;
586: }
587:
588: sub end_center {
589: my ($target,$token) = @_;
590: my $currentstring = '';
591: if ($target eq 'web') {
592: $currentstring = $token->[2];
593: } elsif ($target eq 'tex') {
594: $currentstring = '\end{center}';
595: }
596: return $currentstring;
597: }
598:
599: #-- <b> tag (end tag required)
600: sub start_b {
601: my ($target,$token) = @_;
602: my $currentstring = '';
603: if ($target eq 'web') {
604: $currentstring = $token->[4];
605: } elsif ($target eq 'tex') {
606: $currentstring = '\textbf{';
607: }
608: return $currentstring;
609: }
610:
611: sub end_b {
612: my ($target,$token) = @_;
613: my $currentstring = '';
614: if ($target eq 'web') {
615: $currentstring = $token->[2];
616: } elsif ($target eq 'tex') {
617: $currentstring = '}';
618: }
619: return $currentstring;
620: }
621:
622: #-- <strong> tag (end tag required)
623: sub start_strong {
624: my ($target,$token) = @_;
625: my $currentstring = '';
626: if ($target eq 'web') {
627: $currentstring = $token->[4];
628: } elsif ($target eq 'tex') {
629: $currentstring = '\textbf{';
630: }
631: return $currentstring;
632: }
633:
634: sub end_strong {
635: my ($target,$token) = @_;
636: my $currentstring = '';
637: if ($target eq 'web') {
638: $currentstring = $token->[2];
639: } elsif ($target eq 'tex') {
640: $currentstring = '}';
641: }
642: return $currentstring;
643: }
644:
645: #-- <h1> tag (end tag required)
646: sub start_h1 {
647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
648: my $currentstring = '';
649: if ($target eq 'web') {
650: $currentstring .= $token->[4];
651: } elsif ($target eq 'tex') {
652: my $pre;
653: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
654: if ($align eq 'center') {
655: $pre='\begin{center}';
656: } elsif ($align eq 'left') {
657: $pre='\rlap{';
658: } elsif ($align eq 'right') {
659: $pre=' \hfill \llap{';
660: }
661: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
662: if (not defined $TeXsize) {$TeXsize="large";}
663: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
664: } elsif ($target eq 'meta') {
665: $currentstring='<subject>';
666: &start_output($target);
667: }
668: return $currentstring;
669: }
670:
671: sub end_h1 {
672: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
673: my $currentstring = '';
674: if ($target eq 'web') {
675: $currentstring .= $token->[2];
676: } elsif ($target eq 'tex') {
677: my $post='\vskip 0 mm ';
678: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
679: if ($align eq 'center') {
680: $post='\end{center}';
681: } elsif ($align eq 'left') {
682: $post='} \hfill'.'\vskip 0 mm ';
683: } elsif ($align eq 'right') {
684: $post='}'.'\vskip 0 mm ';
685: }
686: $currentstring .= '}}'.$post;
687: } elsif ($target eq 'meta') {
688: &end_output($target);
689: $currentstring='</subject>';
690: }
691: return $currentstring;
692: }
693:
694: #-- <h2> tag
695: sub start_h2 {
696: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
697: my $currentstring = '';
698: if ($target eq 'web') {
699: $currentstring .= $token->[4];
700: } elsif ($target eq 'tex') {
701: my $pre;
702: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
703: if ($align eq 'center') {
704: $pre='\begin{center}';
705: } elsif ($align eq 'left') {
706: $pre='\rlap{';
707: } elsif ($align eq 'right') {
708: $pre=' \hfill \llap{';
709: }
710: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
711: if (not defined $TeXsize) {$TeXsize="large";}
712: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
713: }
714: return $currentstring;
715: }
716:
717: sub end_h2 {
718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
719: my $currentstring = '';
720: if ($target eq 'web') {
721: $currentstring .= $token->[2];
722: } elsif ($target eq 'tex') {
723: my $post='\vskip 0 mm ';
724: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
725: if ($align eq 'center') {
726: $post='\end{center}';
727: } elsif ($align eq 'left') {
728: $post='} \hfill'.'\vskip 0 mm ';
729: } elsif ($align eq 'right') {
730: $post='}'.'\vskip 0 mm ';
731: }
732: $currentstring .= '}}'.$post;
733: }
734: return $currentstring;
735: }
736:
737: #-- <h3> tag
738: sub start_h3 {
739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
740: my $currentstring = '';
741: if ($target eq 'web') {
742: $currentstring .= $token->[4];
743: } elsif ($target eq 'tex') {
744: my $pre;
745: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
746: if ($align eq 'center') {
747: $pre='\begin{center}';
748: } elsif ($align eq 'left') {
749: $pre='\rlap{';
750: } elsif ($align eq 'right') {
751: $pre=' \hfill \llap{';
752: }
753: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
754: if (not defined $TeXsize) {$TeXsize="large";}
755: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
756: }
757: return $currentstring;
758: }
759:
760: sub end_h3 {
761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
762: my $currentstring = '';
763: if ($target eq 'web') {
764: $currentstring .= $token->[2];
765: } elsif ($target eq 'tex') {
766: my $post='\vskip 0 mm ';
767: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
768: if ($align eq 'center') {
769: $post='\end{center}';
770: } elsif ($align eq 'left') {
771: $post='} \hfill'.'\vskip 0 mm ';
772: } elsif ($align eq 'right') {
773: $post='}'.'\vskip 0 mm ';
774: }
775: $currentstring .= '}}'.$post;
776: }
777: return $currentstring;
778: }
779:
780: #-- <h4> tag
781: sub start_h4 {
782: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
783: my $currentstring = '';
784: if ($target eq 'web') {
785: $currentstring .= $token->[4];
786: } elsif ($target eq 'tex') {
787: my $pre;
788: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
789: if ($align eq 'center') {
790: $pre='\begin{center}';
791: } elsif ($align eq 'left') {
792: $pre='\rlap{';
793: } elsif ($align eq 'right') {
794: $pre=' \hfill \llap{';
795: }
796: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
797: if (not defined $TeXsize) {$TeXsize="large";}
798: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
799: }
800: return $currentstring;
801: }
802:
803: sub end_h4 {
804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
805: my $currentstring = '';
806: if ($target eq 'web') {
807: $currentstring .= $token->[2];
808: } elsif ($target eq 'tex') {
809: my $post='\vskip 0 mm ';
810: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
811: if ($align eq 'center') {
812: $post='\end{center}';
813: } elsif ($align eq 'left') {
814: $post='} \hfill'.'\vskip 0 mm ';
815: } elsif ($align eq 'right') {
816: $post='}'.'\vskip 0 mm ';
817: }
818: $currentstring .= '}}'.$post;
819: }
820: return $currentstring;
821: }
822:
823: #-- <h5> tag
824: sub start_h5 {
825: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
826: my $currentstring = '';
827: if ($target eq 'web') {
828: $currentstring .= $token->[4];
829: } elsif ($target eq 'tex') {
830: my $pre;
831: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
832: if ($align eq 'center') {
833: $pre='\begin{center}';
834: } elsif ($align eq 'left') {
835: $pre='\rlap{';
836: } elsif ($align eq 'right') {
837: $pre=' \hfill \llap{';
838: }
839: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
840: if (not defined $TeXsize) {$TeXsize="large";}
841: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
842: }
843: return $currentstring;
844: }
845:
846: sub end_h5 {
847: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
848: my $currentstring = '';
849: if ($target eq 'web') {
850: $currentstring .= $token->[2];
851: } elsif ($target eq 'tex') {
852: my $post='\vskip 0 mm ';
853: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
854: if ($align eq 'center') {
855: $post='\end{center}';
856: } elsif ($align eq 'left') {
857: $post='} \hfill'.'\vskip 0 mm ';
858: } elsif ($align eq 'right') {
859: $post='}'.'\vskip 0 mm ';
860: }
861: $currentstring .= '}}'.$post;
862: }
863: return $currentstring;
864: }
865:
866: #-- <h6> tag
867: sub start_h6 {
868: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
869: my $currentstring = '';
870: if ($target eq 'web') {
871: $currentstring .= $token->[4];
872: } elsif ($target eq 'tex') {
873: my $pre;
874: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
875: if ($align eq 'center') {
876: $pre='\begin{center}';
877: } elsif ($align eq 'left') {
878: $pre='\rlap{';
879: } elsif ($align eq 'right') {
880: $pre=' \hfill \llap{';
881: }
882: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
883: if (not defined $TeXsize) {$TeXsize="large";}
884: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
885: }
886: return $currentstring;
887: }
888:
889: sub end_h6 {
890: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
891: my $currentstring = '';
892: if ($target eq 'web') {
893: $currentstring .= $token->[2];
894: } elsif ($target eq 'tex') {
895: my $post='\vskip 0 mm ';
896: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
897: if ($align eq 'center') {
898: $post='\end{center}';
899: } elsif ($align eq 'left') {
900: $post='} \hfill'.'\vskip 0 mm ';
901: } elsif ($align eq 'right') {
902: $post='}'.'\vskip 0 mm ';
903: }
904: $currentstring .= '}}'.$post;
905: }
906: return $currentstring;
907: }
908:
909: #--- <cite> tag (end tag required)
910: sub start_cite {
911: my ($target,$token) = @_;
912: my $currentstring = '';
913: if ($target eq 'web') {
914: $currentstring .= $token->[4];
915: } elsif ($target eq 'tex') {
916: $currentstring .= '\textit{';
917: }
918: return $currentstring;
919: }
920:
921: sub end_cite {
922: my ($target,$token) = @_;
923: my $currentstring = '';
924: if ($target eq 'web') {
925: $currentstring .= $token->[2];
926: } elsif ($target eq 'tex') {
927: $currentstring .= '}';
928: }
929: return $currentstring;
930: }
931:
932: #-- <i> tag (end tag required)
933: sub start_i {
934: my ($target,$token) = @_;
935: my $currentstring = '';
936: if ($target eq 'web') {
937: $currentstring .= $token->[4];
938: } elsif ($target eq 'tex') {
939: $currentstring .= '\textit{';
940: }
941: return $currentstring;
942: }
943:
944: sub end_i {
945: my ($target,$token) = @_;
946: my $currentstring = '';
947: if ($target eq 'web') {
948: $currentstring .= $token->[2];
949: } elsif ($target eq 'tex') {
950: $currentstring .= '}';
951: }
952: return $currentstring;
953: }
954:
955: #-- <address> tag (end tag required)
956: sub start_address {
957: my ($target,$token) = @_;
958: my $currentstring = '';
959: if ($target eq 'web') {
960: $currentstring .= $token->[4];
961: } elsif ($target eq 'tex') {
962: $currentstring .= '\textit{';
963: }
964: return $currentstring;
965: }
966:
967: sub end_address {
968: my ($target,$token) = @_;
969: my $currentstring = '';
970: if ($target eq 'web') {
971: $currentstring .= $token->[2];
972: } elsif ($target eq 'tex') {
973: $currentstring .= '}';
974: }
975: return $currentstring;
976: }
977:
978: #-- <dfn> tag (end tag required)
979: sub start_dfn {
980: my ($target,$token) = @_;
981: my $currentstring = '';
982: if ($target eq 'web') {
983: $currentstring .= $token->[4];
984: } elsif ($target eq 'tex') {
985: $currentstring .= '\textit{';
986: }
987: return $currentstring;
988: }
989:
990: sub end_dfn {
991: my ($target,$token) = @_;
992: my $currentstring = '';
993: if ($target eq 'web') {
994: $currentstring .= $token->[2];
995: } elsif ($target eq 'tex') {
996: $currentstring .= '}';
997: }
998: return $currentstring;
999: }
1000:
1001: #-- <tt> tag (end tag required)
1002: sub start_tt {
1003: my ($target,$token) = @_;
1004: my $currentstring = '';
1005: if ($target eq 'web') {
1006: $currentstring .= $token->[4];
1007: } elsif ($target eq 'tex') {
1008: $currentstring .= '\texttt{';
1009: }
1010: return $currentstring;
1011: }
1012:
1013: sub end_tt {
1014: my ($target,$token) = @_;
1015: my $currentstring = '';
1016: if ($target eq 'web') {
1017: $currentstring .= $token->[2];
1018: } elsif ($target eq 'tex') {
1019: $currentstring .= '}';
1020: }
1021: return $currentstring;
1022: }
1023:
1024: #-- <kbd> tag (end tag required)
1025: sub start_kbd {
1026: my ($target,$token) = @_;
1027: my $currentstring = '';
1028: if ($target eq 'web') {
1029: $currentstring .= $token->[4];
1030: } elsif ($target eq 'tex') {
1031: $currentstring .= '\texttt{';
1032: }
1033: return $currentstring;
1034: }
1035:
1036: sub end_kbd {
1037: my ($target,$token) = @_;
1038: my $currentstring = '';
1039: if ($target eq 'web') {
1040: $currentstring .= $token->[2];
1041: } elsif ($target eq 'tex') {
1042: $currentstring .= '}';
1043: }
1044: return $currentstring;
1045: }
1046:
1047: #-- <code> tag (end tag required)
1048: sub start_code {
1049: my ($target,$token) = @_;
1050: my $currentstring = '';
1051: if ($target eq 'web') {
1052: $currentstring .= $token->[4];
1053: } elsif ($target eq 'tex') {
1054: $currentstring .= '\texttt{';
1055: }
1056: return $currentstring;
1057: }
1058:
1059: sub end_code {
1060: my ($target,$token) = @_;
1061: my $currentstring = '';
1062: if ($target eq 'web') {
1063: $currentstring .= $token->[2];
1064: } elsif ($target eq 'tex') {
1065: $currentstring .= '}';
1066: }
1067: return $currentstring;
1068: }
1069:
1070: #-- <em> tag (end tag required)
1071: sub start_em {
1072: my ($target,$token) = @_;
1073: my $currentstring = '';
1074: if ($target eq 'web') {
1075: $currentstring .= $token->[4];
1076: } elsif ($target eq 'tex') {
1077: $currentstring .= '\emph{';
1078: }
1079: return $currentstring;
1080: }
1081:
1082: sub end_em {
1083: my ($target,$token) = @_;
1084: my $currentstring = '';
1085: if ($target eq 'web') {
1086: $currentstring .= $token->[2];
1087: } elsif ($target eq 'tex') {
1088: $currentstring .= '}';
1089: }
1090: return $currentstring;
1091: }
1092:
1093: #-- <q> tag (end tag required)
1094: sub start_q {
1095: my ($target,$token) = @_;
1096: my $currentstring = '';
1097: if ($target eq 'web') {
1098: $currentstring .= $token->[4];
1099: } elsif ($target eq 'tex') {
1100: $currentstring .= '\emph{';
1101: }
1102: return $currentstring;
1103: }
1104:
1105: sub end_q {
1106: my ($target,$token) = @_;
1107: my $currentstring = '';
1108: if ($target eq 'web') {
1109: $currentstring .= $token->[2];
1110: } elsif ($target eq 'tex') {
1111: $currentstring .= '}';
1112: }
1113: return $currentstring;
1114: }
1115:
1116: #-- <p> tag (end tag optional)
1117: #optional attribute - align="center|left|right"
1118: sub start_p {
1119: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1120: my $currentstring = '';
1121: if ($target eq 'web') {
1122: $currentstring .= $token->[4];
1123: } elsif ($target eq 'tex') {
1124: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1125: if ($align eq 'center') {
1126: $currentstring='\begin{center}\par';
1127: } elsif ($align eq 'right') {
1128: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1129: } elsif ($align eq 'left') {
1130: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1131: } else {
1132: $currentstring='\par ';
1133: }
1134: my $signal=1;#<p> does not work inside <b>...</b>
1135: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1136: if (!$signal) {$currentstring = '';}
1137: }
1138: }
1139: return $currentstring;
1140: }
1141:
1142: sub end_p {
1143: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1144: my $currentstring = '';
1145: if ($target eq 'web') {
1146: $currentstring .= $token->[2];
1147: } elsif ($target eq 'tex') {
1148: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1149: if (not defined $align) {
1150: $currentstring.='\strut\\\\\strut ';
1151: } elsif ($align eq 'center') {
1152: $currentstring .= '\end{center}';
1153: } elsif ($align eq 'right') {
1154: $currentstring .= '}}';
1155: } elsif ($align eq 'left') {
1156: $currentstring .= '}\hfill}';
1157: }
1158: }
1159: return $currentstring;
1160: }
1161:
1162: #-- <br> tag (end tag forbidden)
1163: sub start_br {
1164: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1165: my $currentstring = '';
1166: if ($target eq 'web') {
1167: $currentstring .= $token->[4];
1168: } elsif ($target eq 'tex') {
1169: my @tempo=@$tagstack;
1170: my $signal=0;
1171: for (my $i=$#tempo;$i>=0;$i--) {
1172: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1173: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1174: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1175: $signal=1;
1176: last;
1177: }
1178: }
1179: if ($signal) {
1180: $currentstring .= ' \vskip 0 mm ';
1181: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1182: $currentstring .= '\strut \\\\ \strut ';
1183: }
1184: }
1185: return $currentstring;
1186: }
1187:
1188: sub end_br {
1189: my ($target,$token) = @_;
1190: my $currentstring = '';
1191: if ($target eq 'web') {
1192: $currentstring .= $token->[2];
1193: }
1194: return $currentstring;
1195: }
1196:
1197: #-- <big> tag (end tag required)
1198: sub start_big {
1199: my ($target,$token) = @_;
1200: my $currentstring = '';
1201: if ($target eq 'web') {
1202: $currentstring .= $token->[4];
1203: } elsif ($target eq 'tex') {
1204: $currentstring .= '{\large ';
1205: }
1206: return $currentstring;
1207: }
1208:
1209: sub end_big {
1210: my ($target,$token) = @_;
1211: my $currentstring = '';
1212: if ($target eq 'web') {
1213: $currentstring .= $token->[2];
1214: } elsif ($target eq 'tex') {
1215: $currentstring .= '}';
1216: }
1217: return $currentstring;
1218: }
1219:
1220: #-- <small> tag (end tag required)
1221: sub start_small {
1222: my ($target,$token) = @_;
1223: my $currentstring = '';
1224: if ($target eq 'web') {
1225: $currentstring .= $token->[4];
1226: } elsif ($target eq 'tex') {
1227: $currentstring .= '{\footnotesize ';
1228: }
1229: return $currentstring;
1230: }
1231:
1232: sub end_small {
1233: my ($target,$token) = @_;
1234: my $currentstring = '';
1235: if ($target eq 'web') {
1236: $currentstring .= $token->[2];
1237: } elsif ($target eq 'tex') {
1238: $currentstring .= '}';
1239: }
1240: return $currentstring;
1241: }
1242:
1243: #-- <basefont> tag (end tag forbidden)
1244: sub start_basefont {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1246: my $currentstring = '';
1247: if ($target eq 'web') {
1248: $currentstring = $token->[4];
1249: } elsif ($target eq 'tex') {
1250: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1251: if (defined $basesize) {
1252: $currentstring = '{\\'.$basesize.' ';
1253: }
1254: }
1255: return $currentstring;
1256: }
1257:
1258: sub end_basefont {
1259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1260: my $currentstring = '';
1261: if ($target eq 'web') {
1262: $currentstring = $token->[4];
1263: } elsif ($target eq 'tex') {
1264: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1265: if (defined $basesize) {
1266: $currentstring = '}';
1267: }
1268: }
1269: return $currentstring;
1270: }
1271:
1272: #-- <font> tag (end tag required)
1273: sub start_font {
1274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1275: my $currentstring = '';
1276: if ($target eq 'web') {
1277: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1278: if ($face!~/symbol/i) {
1279: if (($ENV{'browser.fontenhance'} eq 'on') ||
1280: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1281: }
1282: $currentstring = $token->[4];
1283: } elsif ($target eq 'tex') {
1284: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1285: if (defined $fontsize) {
1286: $currentstring = '{\\'.$fontsize.' ';
1287: }
1288: }
1289: return $currentstring;
1290: }
1291:
1292: sub end_font {
1293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1294: my $currentstring = '';
1295: if ($target eq 'web') {
1296: $currentstring = $token->[2];
1297: } elsif ($target eq 'tex') {
1298: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1299: if (defined $fontsize) {
1300: $currentstring = '}';
1301: }
1302: }
1303: return $currentstring;
1304: }
1305:
1306: #-- <strike> tag (end tag required)
1307: sub start_strike {
1308: my ($target,$token) = @_;
1309: my $currentstring = '';
1310: if ($target eq 'web') {
1311: $currentstring .= $token->[4];
1312: } elsif ($target eq 'tex') {
1313: &Apache::lonxml::startredirection();
1314: }
1315: return $currentstring;
1316: }
1317:
1318: sub end_strike {
1319: my ($target,$token) = @_;
1320: my $currentstring = '';
1321: if ($target eq 'web') {
1322: $currentstring .= $token->[2];
1323: } elsif ($target eq 'tex') {
1324: $currentstring=&Apache::lonxml::endredirection();
1325: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1326: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1327: $currentstring=~s/(\S)\s*$/$1\}/;
1328: }
1329: return $currentstring;
1330: }
1331:
1332: #-- <s> tag (end tag required)
1333: sub start_s {
1334: my ($target,$token) = @_;
1335: my $currentstring = '';
1336: if ($target eq 'web') {
1337: $currentstring .= $token->[4];
1338: } elsif ($target eq 'tex') {
1339: &Apache::lonxml::startredirection();
1340: }
1341: return $currentstring;
1342: }
1343:
1344: sub end_s {
1345: my ($target,$token) = @_;
1346: my $currentstring = '';
1347: if ($target eq 'web') {
1348: $currentstring .= $token->[2];
1349: } elsif ($target eq 'tex') {
1350: $currentstring=&Apache::lonxml::endredirection();
1351: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1352: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1353: $currentstring=~s/(\S)\s*$/$1\}/;
1354: }
1355: return $currentstring;
1356: }
1357:
1358: #-- <sub> tag (end tag required)
1359: sub start_sub {
1360: my ($target,$token) = @_;
1361: my $currentstring = '';
1362: if ($target eq 'web') {
1363: $currentstring .= $token->[4];
1364: } elsif ($target eq 'tex') {
1365: $currentstring .= '\ensuremath{_{';
1366: }
1367: return $currentstring;
1368: }
1369:
1370: sub end_sub {
1371: my ($target,$token) = @_;
1372: my $currentstring = '';
1373: if ($target eq 'web') {
1374: $currentstring .= $token->[2];
1375: } elsif ($target eq 'tex') {
1376: $currentstring .= '}}';
1377: }
1378: return $currentstring;
1379: }
1380:
1381: #-- <sup> tag (end tag required)
1382: sub start_sup {
1383: my ($target,$token) = @_;
1384: my $currentstring = '';
1385: if ($target eq 'web') {
1386: $currentstring .= $token->[4];
1387: } elsif ($target eq 'tex') {
1388: $currentstring .= '\ensuremath{^{';
1389: }
1390: return $currentstring;
1391: }
1392:
1393: sub end_sup {
1394: my ($target,$token) = @_;
1395: my $currentstring = '';
1396: if ($target eq 'web') {
1397: $currentstring .= $token->[2];
1398: } elsif ($target eq 'tex') {
1399: $currentstring .= '}}';
1400: }
1401: return $currentstring;
1402: }
1403:
1404: #-- <hr> tag (end tag forbidden)
1405: sub start_hr {
1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1407: my $currentstring = '';
1408: if ($target eq 'web') {
1409: $currentstring .= $token->[4];
1410: } elsif ($target eq 'tex') {
1411: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1412: if (defined $LaTeXwidth) {
1413: if ($LaTeXwidth=~/^%/) {
1414: substr($LaTeXwidth,0,1)='';
1415: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1416: }
1417: } else {
1418: $LaTeXwidth ='0.9\textwidth';
1419: }
1420: my ($pre,$post);
1421: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1422: if (($align eq 'center') || (not defined $align)) {
1423: $pre=''; $post='';
1424: } elsif ($align eq 'left') {
1425: $pre='\rlap{'; $post='} \hfill';
1426: } elsif ($align eq 'right') {
1427: $pre=' \hfill \llap{'; $post='}';
1428: }
1429: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1430: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1431: }
1432: return $currentstring;
1433: }
1434:
1435: sub end_hr {
1436: my ($target,$token) = @_;
1437: my $currentstring = '';
1438: if ($target eq 'web') {
1439: $currentstring .= $token->[2];
1440: }
1441: return $currentstring;
1442: }
1443:
1444: #-- <div> tag (end tag required)
1445: sub start_div {
1446: my ($target,$token) = @_;
1447: my $currentstring = '';
1448: if ($target eq 'web') {
1449: $currentstring .= $token->[4];
1450: }
1451: return $currentstring;
1452: }
1453:
1454: sub end_div {
1455: my ($target,$token) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web') {
1458: $currentstring .= $token->[2];
1459: }
1460: return $currentstring;
1461: }
1462:
1463: #-- <a> tag (end tag required)
1464: sub start_a {
1465: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1466: my $currentstring = '';
1467: if ($target eq 'web') {
1468: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1469: undef,1);
1470: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1471: } elsif ($target eq 'tex') {
1472: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1473: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1474: if ($a=~/\S/) {
1475: $a=~s/([^\\])%/$1\\\%/g;
1476: $currentstring .= '\ref{URI: '.$a.'}';
1477: } elsif ($b=~/\S/) {
1478: $currentstring .= '\ref{Anchor: '.$b.'}';
1479: } else {
1480: $currentstring.='';
1481: }
1482: }
1483: return $currentstring;
1484: }
1485:
1486: sub end_a {
1487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1488: my $currentstring = '';
1489: if ($target eq 'web') {
1490: $currentstring .= $token->[2];
1491: }
1492: return $currentstring;
1493: }
1494:
1495: #-- <li> tag (end tag optional)
1496: sub start_li {
1497: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1498: my $currentstring = '';
1499: if ($target eq 'web') {
1500: $currentstring = $token->[4];
1501: } elsif ($target eq 'tex') {
1502: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1503: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1504: #FIXME need to support types i and I
1505: if ($type=~/disc/) {
1506: $currentstring .= ' \item[$\bullet$] ';
1507: } elsif ($type=~/circle/) {
1508: $currentstring .= ' \item[$\circ$] ';
1509: } elsif ($type=~/square/) {
1510: $currentstring .= ' \item[$\diamond$] ';
1511: } elsif ($type eq '1') {
1512: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1513: } elsif ($type eq 'A') {
1514: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1515: } elsif ($type eq 'a') {
1516: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1517: } elsif ($value ne '') {
1518: $currentstring .= ' \item['.$value.'] ';
1519: } else {
1520: $currentstring .= ' \item ';
1521: }
1522: $Apache::londefdef::list_index++;
1523: }
1524: return $currentstring;
1525: }
1526:
1527: sub end_li {
1528: my ($target,$token) = @_;
1529: my $currentstring = '';
1530: if ($target eq 'web') {
1531: $currentstring = $token->[2];
1532: }
1533: return $currentstring;
1534: }
1535:
1536: #-- <u> tag (end tag required)
1537: sub start_u {
1538: my ($target,$token) = @_;
1539: my $currentstring = '';
1540: if ($target eq 'web') {
1541: $currentstring .= $token->[4];
1542: } elsif ($target eq 'tex') {
1543: &Apache::lonxml::startredirection();
1544: }
1545: return $currentstring;
1546: }
1547:
1548: sub end_u {
1549: my ($target,$token) = @_;
1550: my $currentstring = '';
1551: if ($target eq 'web') {
1552: $currentstring .= $token->[2];
1553: } elsif ($target eq 'tex') {
1554: $currentstring=&Apache::lonxml::endredirection();
1555: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1556: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1557: $currentstring=~s/(\S)\s*$/$1\}/;
1558: }
1559: return $currentstring;
1560: }
1561:
1562: #-- <ul> tag (end tag required)
1563: sub start_ul {
1564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1565: my $currentstring = '';
1566: if ($target eq 'web') {
1567: $currentstring = $token->[4];
1568: } elsif ($target eq 'tex') {
1569: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1570: $Apache::londefdef::list_index=0;
1571: if ($TeXtype eq 'disc') {
1572: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1573: '\renewcommand{\labelitemii}{$\bullet$}'.
1574: '\renewcommand{\labelitemiii}{$\bullet$}'.
1575: '\renewcommand{\labelitemiv}{$\bullet$}';
1576: } elsif ($TeXtype eq 'circle') {
1577: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1578: '\renewcommand{\labelitemii}{$\circ$}'.
1579: '\renewcommand{\labelitemiii}{$\circ$}'.
1580: '\renewcommand{\labelitemiv}{$\circ$}';
1581: } elsif ($TeXtype eq 'square') {
1582: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1583: '\renewcommand{\labelitemii}{$\diamond$}'.
1584: '\renewcommand{\labelitemiii}{$\diamond$}'.
1585: '\renewcommand{\labelitemiv}{$\diamond$}';
1586: }
1587: $currentstring .= '\strut \begin{itemize}';
1588: }
1589: return $currentstring;
1590: }
1591:
1592: sub end_ul {
1593: my ($target,$token) = @_;
1594: my $currentstring = '';
1595: if ($target eq 'web') {
1596: $currentstring = $token->[2];
1597: } elsif ($target eq 'tex') {
1598: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1599: '\renewcommand{\labelitemii}{$\bullet$}'.
1600: '\renewcommand{\labelitemiii}{$\bullet$}'.
1601: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1602: }
1603: return $currentstring;
1604: }
1605:
1606: #-- <menu> tag (end tag required)
1607: sub start_menu {
1608: my ($target,$token) = @_;
1609: my $currentstring = '';
1610: if ($target eq 'web') {
1611: $currentstring = $token->[4];
1612: } elsif ($target eq 'tex') {
1613: $currentstring = " \\begin{itemize} ";
1614: }
1615: return $currentstring;
1616: }
1617:
1618: sub end_menu {
1619: my ($target,$token) = @_;
1620: my $currentstring = '';
1621: if ($target eq 'web') {
1622: $currentstring = $token->[2];
1623: } elsif ($target eq 'tex') {
1624: $currentstring = " \\end{itemize}";
1625: }
1626: return $currentstring;
1627: }
1628:
1629: #-- <dir> tag (end tag required)
1630: sub start_dir {
1631: my ($target,$token) = @_;
1632: my $currentstring = '';
1633: if ($target eq 'web') {
1634: $currentstring = $token->[4];
1635: } elsif ($target eq 'tex') {
1636: $currentstring = " \\begin{itemize} ";
1637: }
1638: return $currentstring;
1639: }
1640:
1641: sub end_dir {
1642: my ($target,$token) = @_;
1643: my $currentstring = '';
1644: if ($target eq 'web') {
1645: $currentstring = $token->[2];
1646: } elsif ($target eq 'tex') {
1647: $currentstring = " \\end{itemize}";
1648: }
1649: return $currentstring;
1650: }
1651:
1652: #-- <ol> tag (end tag required)
1653: sub start_ol {
1654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1655: my $currentstring = '';
1656: if ($target eq 'web') {
1657: $currentstring = $token->[4];
1658: } elsif ($target eq 'tex') {
1659: $Apache::londefdef::list_index=0;
1660: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1661: if ($type eq '1') {
1662: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1663: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1664: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1665: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1666: } elsif ($type eq 'A') {
1667: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1668: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1669: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1670: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1671: } elsif ($type eq 'a') {
1672: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1673: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1674: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1675: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1676: } elsif ($type eq 'i') {
1677: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1678: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1679: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1680: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1681: } elsif ($type eq 'I') {
1682: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1683: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1684: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1685: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1686: }
1687: $currentstring .= '\strut \begin{enumerate}';
1688: }
1689: return $currentstring;
1690: }
1691:
1692: sub end_ol {
1693: my ($target,$token) = @_;
1694: my $currentstring = '';
1695: if ($target eq 'web') {
1696: $currentstring = $token->[2];
1697: } elsif ($target eq 'tex') {
1698: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1699: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1700: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1701: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1702: }
1703: return $currentstring;
1704: }
1705:
1706: #-- <dl> tag (end tag required)
1707: sub start_dl {
1708: my ($target,$token) = @_;
1709: my $currentstring = '';
1710: if ($target eq 'web') {
1711: $currentstring = $token->[4];
1712: } elsif ($target eq 'tex') {
1713: $currentstring = '\begin{description}';
1714: $Apache::londefdef::DL++;
1715: push(@Apache::londefdef::description,[]);
1716: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1717: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1718: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1719: }
1720: return $currentstring;
1721: }
1722:
1723: sub end_dl {
1724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1725: my $currentstring = '';
1726: if ($target eq 'web') {
1727: $currentstring = $token->[2];
1728: } elsif ($target eq 'tex') {
1729: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1730: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1731: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1732: $currentstring.=' '.$element.' ';
1733: }
1734: pop(@Apache::londefdef::description);
1735: $currentstring.='\end{description}';
1736: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1737: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1738: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1739: $Apache::londefdef::DL--;
1740: }
1741: return $currentstring;
1742: }
1743:
1744: #-- <dt> tag (end tag optional)
1745: sub start_dt {
1746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1747: my $currentstring='';
1748: if ($target eq 'web') {
1749: $currentstring = $token->[4];
1750: } elsif ($target eq 'tex') {
1751: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1752: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1753: &Apache::lonxml::startredirection();
1754: $Apache::londefdef::DT[-1]++;
1755: $Apache::londefdef::seenDT[-1]=1;
1756: }
1757: return $currentstring;
1758: }
1759:
1760: sub end_dt {
1761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1762: my $currentstring = '';
1763: if ($target eq 'web') {
1764: $currentstring = $token->[2];
1765: } elsif ($target eq 'tex') {
1766: if ($Apache::londefdef::DT[-1]) {
1767: my $data=&item_cleanup();
1768: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1769: $Apache::londefdef::DT[-1]--;
1770: }
1771: }
1772: return $currentstring;
1773: }
1774:
1775: sub item_cleanup {
1776: my $item=&Apache::lonxml::endredirection();
1777: $item=~s/\\begin{center}//g;
1778: $item=~s/\\end{center}//g;
1779: return $item;
1780: }
1781:
1782: #-- <dd> tag (end tag optional)
1783: sub start_dd {
1784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1785: my $currentstring = '';
1786: if ($target eq 'web') {
1787: $currentstring = $token->[4];
1788: } elsif ($target eq 'tex') {
1789: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1790: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1791: if (!$Apache::londefdef::seenDT[-1]) {
1792: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1793: }
1794: push(@{$Apache::londefdef::description[-1]},'');
1795: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1796: $Apache::londefdef::DD[-1]++;
1797: &Apache::lonxml::startredirection();
1798: }
1799: return $currentstring;
1800: }
1801:
1802: sub end_dd {
1803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1804: my $currentstring = '';
1805: if ($target eq 'web') {
1806: $currentstring = $token->[2];
1807: } elsif ($target eq 'tex') {
1808: $Apache::londefdef::description[-1]->[-1].=
1809: &Apache::lonxml::endredirection().' \vskip 0mm ';
1810: $Apache::londefdef::DD[-1]--;
1811: }
1812: return $currentstring;
1813: }
1814:
1815: #-- <table> tag (end tag required)
1816: #list of supported attributes: border,width,TeXwidth
1817: sub start_table {
1818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1819: my ($textwidth,$currentstring)=('','');
1820: if ($target eq 'web') {
1821: $currentstring = $token->[4];
1822: } elsif ($target eq 'tex') {
1823: my $aa = {};
1824: push @Apache::londefdef::table, $aa;
1825: $Apache::londefdef::table[-1]{'row_number'} = -1;
1826: #maximum table's width (default coincides with text line length)
1827: if ($#Apache::londefdef::table==0) {
1828: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1829: $textwidth=~/(\d+\.?\d*)/;
1830: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1831: } else {
1832: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1833: #the maximum width of nested table is determined by LATeX width of parent cell
1834: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1835: } else {
1836: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1837: $textwidth=$Apache::londefdef::table[-2]{'width'};
1838: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1839: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1840: }
1841: }
1842: }
1843: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1844: if (not defined $TeXwidth) {
1845: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1846: if ($htmlwidth=~/%/) {
1847: $Apache::londefdef::table[-1]{'percent'}=1;
1848: $htmlwidth=~/(\d+)/;
1849: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1850: } else {
1851: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1852: }
1853: } elsif ($TeXwidth=~/%/) {
1854: $Apache::londefdef::table[-1]{'percent'}=1;
1855: $TeXwidth=~/(\d+)/;
1856: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1857: } else {
1858: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1859: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1860: }
1861: #table's border
1862: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1863: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1864: unless (defined $border) { $border = 0; }
1865: if ($border) {
1866: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1867: $Apache::londefdef::table[-1]{'vinc'} = '&';
1868: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1869: } else {
1870: $Apache::londefdef::table[-1]{'hinc'} = '';
1871: $Apache::londefdef::table[-1]{'vinc'} = '&';
1872: $Apache::londefdef::table[-1]{'vvinc'} = '';
1873: }
1874: if ($#Apache::londefdef::table==0) {
1875: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1876: }
1877: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1878: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1879: $Apache::londefdef::table[-1]{'objectlen'}=[];
1880: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1881: $Apache::londefdef::table[-1]{'maxlen'}=[];
1882: $Apache::londefdef::table[-1]{'minlen'}=[];
1883: $Apache::londefdef::table[-1]{'content'}=[];
1884: $Apache::londefdef::table[-1]{'align'}=[];
1885: $currentstring='\keephidden{NEW TABLE ENTRY}';
1886: }
1887: return $currentstring;
1888: }
1889:
1890: sub end_table {
1891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1892: my $currentstring = '';
1893: if ($target eq 'web') {
1894: $currentstring = $token->[2];
1895: } elsif ($target eq 'tex') {
1896: my $inmemory = '';
1897: my $output = '';
1898: my $WARNING='';
1899: #width of columns from TeXwidth attributes
1900: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1901: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1902: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1903: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1904: }
1905: }
1906: }
1907: #free space and number of empty columns
1908: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1909: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1910: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1911: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1912: $empty_columns++;
1913: } else {
1914: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1915: }
1916: }
1917: #boundaries for contents columns
1918: my @min_len=();#columns can not be narrower
1919: my @max_len=();#maximum length of column
1920: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1921: my ($localmin,$localmax)=(0,0);
1922: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1923: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1924: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1925: }
1926: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1927: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1928: }
1929: }
1930: push @min_len, $localmin;
1931: push @max_len, $localmax;
1932: }
1933: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1934: my $localmin=0,;
1935: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1936: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1937: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1938: }
1939: }
1940: if ($max_len[$jn]<$localmin) {
1941: $max_len[$jn]=$localmin;
1942: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1943: }#object size is bigger
1944: if ($min_len[$jn]<$localmin) {
1945: $min_len[$jn]=$localmin;
1946: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1947: }#object size is bigger
1948: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1949: $min_len[$jn]=0;
1950: $max_len[$jn]=0;
1951: }
1952: }
1953: #final adjustment of column width
1954: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1955: my @adjust=();
1956: #step 1. adjustment by maximum value
1957: my $space_neeeded=0;
1958: for (my $jn=0;$jn<=$#max_len;$jn++) {
1959: $space_neeeded=$space_neeeded+$max_len[$jn];
1960: }
1961: if ($space_neeeded<=$available_space) {
1962: for (my $jn=0;$jn<=$#max_len;$jn++) {
1963: if ($fwidth[$jn]==0) {
1964: $fwidth[$jn]=$max_len[$jn];
1965: }
1966: }
1967: } else {
1968: #step 2. adjustment by minimum value (estimation)
1969: $space_neeeded=0;
1970: for (my $jn=0;$jn<=$#min_len;$jn++) {
1971: $space_neeeded+=$min_len[$jn];
1972: }
1973: if ($space_neeeded>$available_space) {
1974: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1975: for (my $jn=0;$jn<=$#max_len;$jn++) {
1976: if ($fwidth[$jn]==0) {
1977: $fwidth[$jn]=$min_len[$jn];
1978: }
1979: }
1980: #check if we have objects which can be scaled
1981: my $how_many_to_scale=0;
1982: my @to_scale=();
1983: for (my $jn=0;$jn<=$#max_len;$jn++) {
1984: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1985: $how_many_to_scale++;
1986: push @to_scale, $jn;
1987: }
1988: }
1989: if ($how_many_to_scale>0) {
1990: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1991: foreach my $jn (@to_scale) {
1992: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1993: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1994: if ($1 ne '') {
1995: my $current_length=&recalc($1);
1996: $current_length=~/(\d+\.?\d*)/;
1997: $current_length=$current_length-$space_to_adjust;
1998: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1999: }
2000: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2001: if ($1 ne '') {
2002: my $current_length=$1;
2003: $current_length=$current_length-$space_to_adjust;
2004: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2005: }
2006: }
2007: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2008: }
2009: }
2010: } else {
2011: #step 3. adjustment over minimal + corrections
2012: my $enlarge_coef=$available_space/$space_neeeded;
2013: my $acsessive=0;
2014: for (my $jn=0;$jn<=$#min_len;$jn++) {
2015: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2016: if ($adjust[$jn]>$max_len[$jn]) {
2017: $fwidth[$jn]=$max_len[$jn];
2018: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2019: $adjust[$jn]=0;
2020: }
2021: }
2022: if ($acsessive>0) {
2023: #we have an excess of space and can redistribute it
2024: my $notempty_columns=0;
2025: for (my $jn=0;$jn<=$#min_len;$jn++) {
2026: if ($adjust[$jn]!=0) {
2027: $notempty_columns++;
2028: }
2029: }
2030: my $per_column=$acsessive/$notempty_columns;
2031: for (my $jn=0;$jn<=$#min_len;$jn++) {
2032: if ($adjust[$jn]!=0) {
2033: $adjust[$jn]+=$per_column;
2034: $fwidth[$jn]=$adjust[$jn];
2035: }
2036: }
2037: } else {
2038: for (my $jn=0;$jn<=$#min_len;$jn++) {
2039: $fwidth[$jn]=$adjust[$jn];
2040: }
2041: }
2042: }
2043: }
2044: #use all available width if it is defined in % or as TeXwidth
2045: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2046: my $current=0;
2047: for (my $i=0;$i<=$#fwidth;$i++) {
2048: $current+=$fwidth[$i];
2049: }
2050: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2051: for (my $i=0;$i<=$#fwidth;$i++) {
2052: $fwidth[$i]*=$coef;
2053: }
2054: }
2055: #removing of empty columns if allowed
2056: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2057: if ($permission eq 'yes') {
2058: my @cleaned_table=();
2059: my @cleaned_header=();
2060: my $colind=0;
2061: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2062: if ($fwidth[$jn]!=0) {
2063: #we need to copy column
2064: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2065: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2066: $cleaned_header[$colind]=$fwidth[$jn];
2067: }
2068: $colind++;
2069: }
2070: }
2071: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2072: @fwidth=@cleaned_header;
2073: }
2074: #construct header of the table
2075: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2076: for (my $in=0;$in<=$#fwidth;$in++) {
2077: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2078: }
2079: $header_of_table .= '}';
2080: #fill the table
2081: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2082: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2083: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2084: $output.='\vspace*{-6 mm}\begin{center}';
2085: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2086: $output.=' \hfill \llap{'
2087: }
2088: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2089: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2090: $output.='\end{center}\vspace*{-6 mm}';
2091: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2092: $output.='} ';
2093: }
2094: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2095: }
2096: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2097: }
2098: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2099: if ($#Apache::londefdef::table > 0) {
2100: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2101: pop @Apache::londefdef::table;
2102: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2103: } else {
2104: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2105: pop @Apache::londefdef::table;
2106: undef @Apache::londefdef::table;
2107: }
2108: }
2109: return $currentstring;
2110: }
2111:
2112: #-- <tr> tag (end tag optional)
2113: sub start_tr {
2114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2115: my $currentstring = '';
2116: if ($target eq 'web') {
2117: $currentstring = $token->[4];
2118: } elsif ($target eq 'tex') {
2119: $Apache::londefdef::table[-1]{'row_number'}++;
2120: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2121: if ($alignchar ne '') {
2122: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2123: } else {
2124: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2125: }
2126: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2127: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2128: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2129: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2130: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2131: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2132: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2133: }
2134: return $currentstring;
2135: }
2136:
2137: sub end_tr {
2138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2139: my $currentstring = '';
2140: if ($target eq 'web') {
2141: $currentstring = $token->[2];
2142: } elsif ($target eq 'tex') {
2143: if ($Apache::londefdef::TD_redirection) {
2144: &end_td_tex($parstack,$parser,$safeeval);
2145: }
2146: }
2147: return $currentstring;
2148: }
2149:
2150: #-- <td> tag (end tag optional)
2151: sub start_td {
2152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2153: my $currentstring = '';
2154: if ($target eq 'web') {
2155: $currentstring = $token->[4];
2156: } elsif ($target eq 'tex') {
2157: $Apache::londefdef::TD_redirection = 1;
2158: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2159: }
2160: return $currentstring;
2161: }
2162:
2163: sub tag_check {
2164: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2165: my @ar=@$parstack;
2166: for (my $i=$#ar-1;$i>=0;$i--) {
2167: if (lc($$tagstack[$i]) eq $good_tag) {
2168: &start_td_tex($parstack,$parser,$safeeval);
2169: last;
2170: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2171: splice @ar, $i+1;
2172: &end_td_tex(\@ar,$parser,$safeeval);
2173: &start_td_tex($parstack,$parser,$safeeval);
2174: last;
2175: }
2176: }
2177: return '';
2178: }
2179:
2180: sub start_td_tex {
2181: my ($parstack,$parser,$safeeval) = @_;
2182: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2183: if ($alignchar eq '') {
2184: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2185: }
2186: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2187: $Apache::londefdef::table[-1]{'counter_columns'}++;
2188: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2189: if (defined $TeXwidth) {
2190: my $current_length=&recalc($TeXwidth);
2191: $current_length=~/(\d+\.?\d*)/;
2192: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2193: }
2194: &Apache::lonxml::startredirection();
2195: return '';
2196: }
2197:
2198: sub end_td_tex {
2199: my ($parstack,$parser,$safeeval) = @_;
2200: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2201: my $data=&Apache::lonxml::endredirection();
2202: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2203: if (defined $TeXwidth) {
2204: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2205: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2207: } else {
2208: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2209: my $garbage_data=$data;
2210: my $fwidth=0;
2211: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2212: my $current_length=&recalc($1);
2213: $current_length=~/(\d+\.?\d*)/;
2214: if ($fwidth<$1) {$fwidth=$1;}
2215: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2216: }
2217: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2218: my $current_length=$1;
2219: if ($fwidth<$current_length) {$fwidth=$current_length;}
2220: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2221: }
2222: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2223: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2224: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2225: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2226: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2227: my $garbage_data=$data;
2228: my $fwidth=0;
2229: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2230: my $current_length=&recalc($1);
2231: $current_length=~/(\d+\.?\d*)/;
2232: if ($fwidth<$1) {$fwidth=$1;}
2233: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2234: }
2235: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2236: my $current_length=&recalc($1);
2237: $current_length=~/(\d+\.?\d*)/;
2238: if ($fwidth<$1) {$fwidth=$1;}
2239: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2240: }
2241: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2242: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2243: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2244: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2245: $data=~s/\\\\\s*$//;
2246: } else {
2247: $data=~s/^\s+(\S.*)/$1/;
2248: $data=~s/(.*\S)\s+$/$1/;
2249: $data=~s/(\s)+/$1/;
2250: my ($current_length,$min_length)=(0,0);
2251: if ($data=~/\\vskip/) {
2252: my $newdata=$data;
2253: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2254: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2255: foreach my $elementdata (@newdata) {
2256: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2257: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2258: my @words=split(/ /,$elementdata);
2259: foreach my $word (@words) {
2260: my $lengthword=2.5*&LATEX_length($word);
2261: if ($min_length<$lengthword) {$min_length=$lengthword;}
2262: }
2263: }
2264: } else {
2265: $current_length=2.5*&LATEX_length($data);
2266: my @words=split(/ /,$data);
2267: foreach my $word (@words) {
2268: my $lengthword=2*&LATEX_length($word);
2269: if ($min_length<$lengthword) {$min_length=$lengthword;}
2270: }
2271: }
2272: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2273: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2274: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2275: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2276: }
2277: }
2278: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2279: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2280: }
2281: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2282: return'';
2283: }
2284:
2285: sub end_td {
2286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2287: my $currentstring = '';
2288: if ($target eq 'web') {
2289: $currentstring = $token->[2];
2290: } elsif ($target eq 'tex') {
2291: $Apache::londefdef::TD_redirection =0;
2292: &end_td_tex($parstack,$parser,$safeeval);
2293: }
2294: return $currentstring;
2295: }
2296:
2297: #-- <th> tag (end tag optional)
2298: sub start_th {
2299: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2300: my $currentstring = '';
2301: if ($target eq 'web') {
2302: $currentstring = $token->[4];
2303: } elsif ($target eq 'tex') {
2304: $Apache::londefdef::TD_redirection = 1;
2305: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2306: }
2307: return $currentstring;
2308: }
2309:
2310: sub tagg_check {
2311: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2312: my @ar=@$parstack;
2313: for (my $i=$#ar-1;$i>=0;$i--) {
2314: if (lc($$tagstack[$i]) eq $good_tag) {
2315: &start_th_tex($parstack,$parser,$safeeval);
2316: last;
2317: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2318: splice @ar, $i+1;
2319: &end_th_tex(\@ar,$parser,$safeeval);
2320: &start_th_tex($parstack,$parser,$safeeval);
2321: last;
2322: }
2323: }
2324: return '';
2325: }
2326:
2327: sub start_th_tex {
2328: my ($parstack,$parser,$safeeval) = @_;
2329: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2330: if ($alignchar eq '') {
2331: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2332: }
2333: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2334: $Apache::londefdef::table[-1]{'counter_columns'}++;
2335: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2336: if (defined $TeXwidth) {
2337: my $current_length=&recalc($TeXwidth);
2338: $current_length=~/(\d+\.?\d*)/;
2339: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2340: }
2341: &Apache::lonxml::startredirection();
2342: return '';
2343: }
2344:
2345: sub end_th_tex {
2346: my ($parstack,$parser,$safeeval) = @_;
2347: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2348: my $data=&Apache::lonxml::endredirection();
2349: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2350: if (defined $TeXwidth) {
2351: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2352: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2354: } else {
2355: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2356: my $garbage_data=$data;
2357: my $fwidth=0;
2358: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2359: my $current_length=&recalc($1);
2360: $current_length=~/(\d+\.?\d*)/;
2361: if ($fwidth<$1) {$fwidth=$1;}
2362: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2363: }
2364: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2365: my $current_length=$1;
2366: if ($fwidth<$current_length) {$fwidth=$current_length;}
2367: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2368: }
2369: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2370: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2371: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2372: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: } else {
2374: $data=~s/^\s+(\S.*)/$1/;
2375: $data=~s/(.*\S)\s+$/$1/;
2376: $data=~s/(\s)+/$1/;
2377: my ($current_length,$min_length)=(0,0);
2378: if ($data=~/\\vskip/) {
2379: my $newdata=$data;
2380: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2381: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2382: foreach my $elementdata (@newdata) {
2383: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2384: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2385: my @words=split(/ /,$elementdata);
2386: foreach my $word (@words) {
2387: my $lengthword=2.5*&LATEX_length($word);
2388: if ($min_length<$lengthword) {$min_length=$lengthword;}
2389: }
2390: }
2391: } else {
2392: $current_length=2.5*&LATEX_length($data);
2393: my @words=split(/ /,$data);
2394: foreach my $word (@words) {
2395: my $lengthword=2*&LATEX_length($word);
2396: if ($min_length<$lengthword) {$min_length=$lengthword;}
2397: }
2398: }
2399: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2400: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2401: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2402: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2403: }
2404: }
2405: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2406: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2407: }
2408: #make data bold
2409: $data='\textbf{'.$data.'}';
2410: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2411: return'';
2412: }
2413:
2414: sub end_th {
2415: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2416: my $currentstring = '';
2417: if ($target eq 'web') {
2418: $currentstring = $token->[2];
2419: } elsif ($target eq 'tex') {
2420: $Apache::londefdef::TD_redirection =0;
2421: &end_th_tex($parstack,$parser,$safeeval);
2422: }
2423: return $currentstring;
2424: }
2425:
2426: #-- <img> tag (end tag forbidden)
2427: #
2428: # Render the <IMG> tag.
2429: # <IMG> has the following attributes (in addition to the
2430: # standard HTML ones:
2431: # TeXwrap - Governs how the tex target will try to wrap text around
2432: # horizontally aligned images.
2433: # TeXwidth - The width of the image when rendered for print (mm).
2434: # TeXheight - The height of the image when rendered for print (mm)
2435: # (Note there seems to also be support for this as a % of page size)
2436: #
2437: sub start_img {
2438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2439: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2440: undef,1);
2441: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2442: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2443: return '';
2444: }
2445: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2446: my $currentstring = '';
2447: my $scaling = .3;
2448:
2449: # Render unto browsers that which are the browser's...
2450:
2451: if ($target eq 'web') {
2452: if ($ENV{'browser.imagesuppress'} ne 'on') {
2453: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2454: } else {
2455: my $alttag= &Apache::lonxml::get_param
2456: ('alt',$parstack,$safeeval,undef,1);
2457: unless ($alttag) {
2458: $alttag=&Apache::lonmeta::alttag
2459: ($Apache::lonxml::pwd[-1],$src);
2460: }
2461: $currentstring.='[IMAGE: '.$alttag.']';
2462: }
2463:
2464: # and render unto TeX that which is LaTeX
2465:
2466: } elsif ($target eq 'tex') {
2467: #
2468: # The alignment will require some superstructure to be put around
2469: # the \includegraphics stuff. At present we can only partially
2470: # simulate the alignments offered by html.
2471: #
2472: #
2473: my $align = lc(&Apache::lonxml::get_param('align',
2474: $parstack,
2475: $safeeval,
2476: undef,1));
2477: if(!$align) {
2478: $align = "bottom"; # This is html's default so it's ours too.
2479: }
2480: #
2481: &Apache::lonxml::debug("Alignemnt = $align");
2482: # LaTeX's image/text wrapping is really bad since it wants to
2483: # make figures float.
2484: # The user has the optional parameter (applicable only to l/r
2485: # alignment to use the picins/parpic directive to get wrapped text
2486: # this is also imperfect.. that's why we give them a choice...
2487: # so they can't yell at us for our choice.
2488: #
2489: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2490: $parstack,
2491: $safeeval,
2492: undef,0);
2493: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2494: if(!$latex_rendering) {
2495: $latex_rendering = "parbox";
2496: }
2497: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2498:
2499: #if original gif/jpg/png file exist do following:
2500: my ($path,$file) = &get_eps_image($src);
2501: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2502: &Apache::lonxml::debug("path = $path file = $file src = $src");
2503: if (-e $src) {
2504: &Apache::lonxml::debug("$src exists");
2505: my ($height_param,$width_param)=
2506: &image_size($src,0.3,$parstack,$safeeval);
2507: my $destpath = $path;
2508: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2509: my $destfile = $file;
2510: $destfile =~ s/ /\_/g;
2511: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2512: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$destfile.'} ';
2513:
2514: # If there's an alignment specification we need to honor it here.
2515: # For the horizontal alignments, we will also honor the
2516: # value of the latex specfication. The default is parbox,
2517: # and that's used for illegal values too.
2518: #
2519: # Even though we set a default alignment value, the user
2520: # could have given us an illegal value. In that case we
2521: # just use the default alignment of bottom..
2522: if ($align eq "top") {
2523: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2524: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2525: my $offset = $height_param/2;
2526: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2527: } elsif ($align eq "left") {
2528: if ($latex_rendering eq "parpic") {
2529: $currentstring = '\parpic[l]{'.$currentstring.'}';
2530: } else { # parbox rendering
2531: $currentstring = "\\strut\\newline\n".
2532: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2533: }
2534: } elsif ($align eq "right") {
2535: if ($latex_rendering eq "parpic") {
2536: $currentstring = '\parpic[r]{'.$currentstring.'}';
2537: } else { # parbox rendering.
2538: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2539: .$currentstring.'\end{flushright}} \newline'."\n";
2540: }
2541: } else { # Bottom is also default.
2542: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2543: }
2544: } else {
2545: &Apache::lonxml::debug("$src does not exist");
2546: #original image file doesn't exist so check the alt attribute
2547: my $alt =
2548: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2549: unless ($alt) {
2550: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2551: }
2552:
2553: if ($alt) { $currentstring .= ' '.$alt.' '; }
2554: }
2555:
2556: # And here's where the semi-quote breaks down: allow the user
2557: # to edit the beast as well by rendering the problem for edit:
2558: } elsif ($target eq 'edit') {
2559: $currentstring .=&Apache::edit::tag_start($target,$token);
2560: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2561: &Apache::edit::browse('src',undef,'alt').' '.
2562: &Apache::edit::search('src',undef,'alt').'<br />';
2563: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2564: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2565: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2566: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2567: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2568: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2569: ['','bottom','middle','top','left','right'],$token,5);
2570: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2571: ['', 'parbox', 'parpic'], $token, 2);
2572: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2573: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2574: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2575: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2576: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2577:
2578:
2579: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2580: if ($width) { $currentstring.=' width="'.$width.'" '; }
2581: if ($height) { $currentstring.=' height="'.$height.'" '; }
2582: $currentstring .= ' />';
2583: } elsif ($target eq 'modified') {
2584: my ($osrc,$owidth,$oheight)=
2585: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2586: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2587: $safeeval,'src','alt','align',
2588: 'TeXwidth','TeXheight', 'TeXwrap',
2589: 'width','height');
2590: my ($nsrc,$nwidth,$nheight)=
2591: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2592: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2593: &image_replication($loc);
2594: my ($iwidth,$iheight);
2595: if (-e $loc) {
2596: my $image = Image::Magick->new;
2597: $image->Read($loc);
2598: ($iwidth, $iheight) = ($image->Get('width'),
2599: $image->Get('height'));
2600: }
2601: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2602: # changed image or no size specified,
2603: # if they didn't explicitly change the
2604: # width or height use the ones from the image
2605: if ($iwidth && $iheight) {
2606: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2607: $token->[2]{'width'} = $iwidth;$ctag=1;
2608: }
2609: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2610: $token->[2]{'height'}=$iheight;$ctag=1;
2611: }
2612: }
2613: }
2614: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2615: # if we don't have a width or height
2616: if ($iwidth && $cwidth && !$cheight) {
2617: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2618: }
2619: if ($iheight && $cheight && !$cwidth) {
2620: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2621: }
2622: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2623: }
2624:
2625: return $currentstring;
2626: }
2627:
2628: sub end_img {
2629: my ($target,$token) = @_;
2630: my $currentstring = '';
2631: if ($target eq 'web') {
2632: $currentstring = $token->[2];
2633: } elsif ($target eq 'tex') {
2634: $currentstring = '';
2635: }
2636: return $currentstring;
2637: }
2638:
2639: #-- <applet> tag (end tag required)
2640: sub start_applet {
2641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2642:
2643: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2644: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2645:
2646: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2647: undef,1);
2648: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2649:
2650: my $currentstring = '';
2651: if ($target eq 'web') {
2652: if ($ENV{'browser.appletsuppress'} ne 'on') {
2653: $currentstring = &Apache::lonenc::encrypt_ref($token,
2654: {'code'=>$code,
2655: 'archive'=>$archive}
2656: );
2657: } else {
2658: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2659: $safeeval,undef,1);
2660: unless ($alttag) {
2661: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2662: $code);
2663: }
2664: $currentstring='[APPLET: '.$alttag.']';
2665: }
2666: } elsif ($target eq 'tex') {
2667: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2668: $safeeval,undef,1);
2669: unless ($alttag) {
2670: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2671: undef,1);
2672: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2673: $code);
2674: }
2675: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2676: '.}\end{center}';
2677: }
2678: return $currentstring;
2679: }
2680:
2681: sub end_applet {
2682: my ($target,$token) = @_;
2683: my $currentstring = '';
2684: if ($target eq 'web') {
2685: $currentstring = $token->[2];
2686: } elsif ($target eq 'tex') {
2687: }
2688: return $currentstring;
2689: }
2690:
2691: #-- <embed> tag (end tag optional/required)
2692: sub start_embed {
2693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2694: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2695: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2696: my $currentstring = '';
2697: if ($target eq 'web') {
2698: if ($ENV{'browser.embedsuppress'} ne 'on') {
2699: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2700: } else {
2701: my $alttag=&Apache::lonxml::get_param
2702: ('alt',$parstack,$safeeval,undef,1);
2703: unless ($alttag) {
2704: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2705: }
2706: $currentstring='[EMBED: '.$alttag.']';
2707: }
2708: } elsif ($target eq 'tex') {
2709: }
2710: return $currentstring;
2711: }
2712:
2713: sub end_embed {
2714: my ($target,$token) = @_;
2715: my $currentstring = '';
2716: if ($target eq 'web') {
2717: $currentstring = $token->[2];
2718: } elsif ($target eq 'tex') {
2719: }
2720: return $currentstring;
2721: }
2722:
2723: #-- <param> tag (end tag forbidden)
2724: sub start_param {
2725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2726: if (&Apache::lonxml::get_param
2727: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2728: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2729: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2730: }
2731: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2732: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2733: my $currentstring = '';
2734: if ($target eq 'web') {
2735: my %toconvert;
2736: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2737: if ($src) { $toconvert{'src'}= $src; }
2738: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2739: undef,1);
2740: if ($name=~/^cabbase$/i) {
2741: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2742: $safeeval,undef,1);
2743: }
2744: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2745: } elsif ($target eq 'tex') {
2746: }
2747: return $currentstring;
2748: }
2749:
2750: sub end_param {
2751: my ($target,$token) = @_;
2752: my $currentstring = '';
2753: if ($target eq 'web') {
2754: $currentstring = $token->[2];
2755: } elsif ($target eq 'tex') {
2756: }
2757: return $currentstring;
2758: }
2759:
2760: #-- <allow> tag
2761: sub start_allow {
2762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2763: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2764: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2765: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2766: &Apache::lonnet::clutter($src);
2767: if ($target eq 'tex') { &image_replication($src); }
2768: my $result;
2769: if ($target eq 'edit') {
2770: $result .=&Apache::edit::tag_start($target,$token);
2771: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2772: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2773: } elsif ($target eq 'modified') {
2774: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2775: $safeeval,'src');
2776: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2777: }
2778: return $result;
2779: }
2780:
2781: sub end_allow {
2782: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2783: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2784: return '';
2785: }
2786:
2787: #-- Frames (end tag required)
2788: #-- <frameset>
2789: sub start_frameset {
2790: my ($target,$token) = @_;
2791: my $currentstring = '';
2792: if ($target eq 'web') {
2793: if (!$Apache::lonxml::registered &&
2794: $ENV{'request.state'} eq 'published') {
2795: $currentstring.='<head>'.
2796: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2797: }
2798: my $onLoad='';
2799: foreach my $key (keys(%{$token->[2]})) {
2800: if ($key =~ /^onload$/i) {
2801: $onLoad.=$token->[2]->{$key}.';';
2802: delete($token->[2]->{$key});
2803: }
2804: }
2805: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2806: my $onUnload='';
2807: foreach my $key (keys(%{$token->[2]})) {
2808: if ($key =~ /^onunload$/i) {
2809: $onUnload.=$token->[2]->{$key}.';';
2810: delete($token->[2]->{$key});
2811: }
2812: }
2813: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2814: ';'.$onUnload;
2815:
2816: $currentstring .= '<'.$token->[1];
2817: foreach (keys %{$token->[2]}) {
2818: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2819: }
2820: $currentstring.='>';
2821: }
2822: return $currentstring;
2823: }
2824:
2825: sub end_frameset {
2826: my ($target,$token) = @_;
2827: my $currentstring = '';
2828: if ($target eq 'web') {
2829: $currentstring = $token->[2];
2830: }
2831: return $currentstring;
2832: }
2833:
2834: #-- <xmp> (end tag required)
2835: sub start_xmp {
2836: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2837: my $currentstring = '';
2838: if ($target eq 'web') {
2839: $currentstring .= $token->[4];
2840: } elsif ($target eq 'tex') {
2841: $currentstring .= '\begin{verbatim}';
2842: }
2843: return $currentstring;
2844: }
2845:
2846: sub end_xmp {
2847: my ($target,$token) = @_;
2848: my $currentstring = '';
2849: if ($target eq 'web') {
2850: $currentstring .= $token->[2];
2851: } elsif ($target eq 'tex') {
2852: $currentstring .= '\end{verbatim}';
2853: }
2854: return $currentstring;
2855: }
2856:
2857: #-- <pre> (end tag required)
2858: sub start_pre {
2859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2860: my $currentstring = '';
2861: if ($target eq 'web') {
2862: $currentstring .= $token->[4];
2863: } elsif ($target eq 'tex') {
2864: $currentstring .= '\begin{verbatim}';
2865: }
2866: return $currentstring;
2867: }
2868:
2869: sub end_pre {
2870: my ($target,$token) = @_;
2871: my $currentstring = '';
2872: if ($target eq 'web') {
2873: $currentstring .= $token->[2];
2874: } elsif ($target eq 'tex') {
2875: $currentstring .= '\end{verbatim}';
2876: }
2877: return $currentstring;
2878: }
2879:
2880: #-- <insert>
2881: sub start_insert {
2882: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2883: my $currentstring = '';
2884: if ($target eq 'web') {
2885: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2886: $currentstring .= '<b>'.$display.'</b>';;
2887: }
2888: return $currentstring;
2889: }
2890:
2891: sub end_insert {
2892: my ($target,$token) = @_;
2893: my $currentstring = '';
2894: if ($target eq 'web') {
2895: $currentstring .= '';
2896: }
2897: return $currentstring;
2898: }
2899:
2900: #-- <externallink>
2901: sub start_externallink {
2902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2903: my $currentstring = '';
2904: if ($target eq 'web') {
2905: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2906: $currentstring .= '<b>'.$display.'</b>';;
2907: }
2908: return $currentstring;
2909: }
2910:
2911: sub end_externallink {
2912: my ($target,$token) = @_;
2913: my $currentstring = '';
2914: if ($target eq 'web') {
2915: $currentstring .= '';
2916: }
2917: return $currentstring;
2918: }
2919:
2920: #-- <blankspace heigth="">
2921: sub start_blankspace {
2922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2923: my $currentstring = '';
2924: if ($target eq 'tex') {
2925: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2926: $currentstring .= '\vskip '.$howmuch.' ';
2927: }
2928: return $currentstring;
2929: }
2930:
2931: sub end_blankspace {
2932: my ($target,$token) = @_;
2933: my $currentstring = '';
2934: if ($target eq 'tex') {
2935: $currentstring .= '';
2936: }
2937: return $currentstring;
2938: }
2939:
2940: #-- <abbr> tag (end tag required)
2941: sub start_abbr {
2942: my ($target,$token) = @_;
2943: my $currentstring = '';
2944: if ($target eq 'web') {
2945: $currentstring = $token->[4];
2946: }
2947: return $currentstring;
2948: }
2949:
2950: sub end_abbr {
2951: my ($target,$token) = @_;
2952: my $currentstring = '';
2953: if ($target eq 'web') {
2954: $currentstring = $token->[2];
2955: }
2956: return $currentstring;
2957: }
2958:
2959: #-- <acronym> tag (end tag required)
2960: sub start_acronym {
2961: my ($target,$token) = @_;
2962: my $currentstring = '';
2963: if ($target eq 'web') {
2964: $currentstring = $token->[4];
2965: }
2966: return $currentstring;
2967: }
2968:
2969: sub end_acronym {
2970: my ($target,$token) = @_;
2971: my $currentstring = '';
2972: if ($target eq 'web') {
2973: $currentstring = $token->[2];
2974: }
2975: return $currentstring;
2976: }
2977:
2978: #-- <area> tag (end tag forbidden)
2979: sub start_area {
2980: my ($target,$token) = @_;
2981: my $currentstring = '';
2982: if ($target eq 'web') {
2983: $currentstring = $token->[4];
2984: }
2985: return $currentstring;
2986: }
2987:
2988: sub end_area {
2989: my ($target,$token) = @_;
2990: my $currentstring = '';
2991: if ($target eq 'web') {
2992: $currentstring = $token->[2];
2993: }
2994: return $currentstring;
2995: }
2996:
2997: #-- <base> tag (end tag forbidden)
2998: sub start_base {
2999: my ($target,$token) = @_;
3000: my $currentstring = '';
3001: if ($target eq 'web') {
3002: $currentstring = $token->[4];
3003: }
3004: return $currentstring;
3005: }
3006:
3007: sub end_base {
3008: my ($target,$token) = @_;
3009: my $currentstring = '';
3010: if ($target eq 'web') {
3011: $currentstring = $token->[2];
3012: }
3013: return $currentstring;
3014: }
3015:
3016: #-- <bdo> tag (end tag required)
3017: sub start_bdo {
3018: my ($target,$token) = @_;
3019: my $currentstring = '';
3020: if ($target eq 'web') {
3021: $currentstring = $token->[4];
3022: }
3023: return $currentstring;
3024: }
3025:
3026: sub end_bdo {
3027: my ($target,$token) = @_;
3028: my $currentstring = '';
3029: if ($target eq 'web') {
3030: $currentstring = $token->[2];
3031: }
3032: return $currentstring;
3033: }
3034:
3035: #-- <bgsound> tag (end tag optional)
3036: sub start_bgsound {
3037: my ($target,$token) = @_;
3038: my $currentstring = '';
3039: if ($target eq 'web') {
3040: $currentstring = $token->[4];
3041: }
3042: return $currentstring;
3043: }
3044:
3045: sub end_bgsound {
3046: my ($target,$token) = @_;
3047: my $currentstring = '';
3048: if ($target eq 'web') {
3049: $currentstring = $token->[2];
3050: }
3051: return $currentstring;
3052: }
3053:
3054: #-- <blink> tag (end tag required)
3055: sub start_blink {
3056: my ($target,$token) = @_;
3057: my $currentstring = '';
3058: if ($target eq 'web') {
3059: $currentstring = $token->[4];
3060: }
3061: return $currentstring;
3062: }
3063:
3064: sub end_blink {
3065: my ($target,$token) = @_;
3066: my $currentstring = '';
3067: if ($target eq 'web') {
3068: $currentstring = $token->[2];
3069: }
3070: return $currentstring;
3071: }
3072:
3073: #-- <blockquote> tag (end tag required)
3074: sub start_blockquote {
3075: my ($target,$token) = @_;
3076: my $currentstring = '';
3077: if ($target eq 'web') {
3078: $currentstring = $token->[4];
3079: }
3080: return $currentstring;
3081: }
3082:
3083: sub end_blockquote {
3084: my ($target,$token) = @_;
3085: my $currentstring = '';
3086: if ($target eq 'web') {
3087: $currentstring = $token->[2];
3088: }
3089: return $currentstring;
3090: }
3091:
3092: #-- <button> tag (end tag required)
3093: sub start_button {
3094: my ($target,$token) = @_;
3095: my $currentstring = '';
3096: if ($target eq 'web') {
3097: $currentstring = $token->[4];
3098: }
3099: return $currentstring;
3100: }
3101:
3102: sub end_button {
3103: my ($target,$token) = @_;
3104: my $currentstring = '';
3105: if ($target eq 'web') {
3106: $currentstring = $token->[2];
3107: }
3108: return $currentstring;
3109: }
3110:
3111: #-- <caption> tag (end tag required)
3112: sub start_caption {
3113: my ($target,$token) = @_;
3114: my $currentstring = '';
3115: if ($target eq 'web') {
3116: $currentstring = $token->[4];
3117: }
3118: return $currentstring;
3119: }
3120:
3121: sub end_caption {
3122: my ($target,$token) = @_;
3123: my $currentstring = '';
3124: if ($target eq 'web') {
3125: $currentstring = $token->[2];
3126: }
3127: return $currentstring;
3128: }
3129:
3130: #-- <col> tag (end tag forbdden)
3131: sub start_col {
3132: my ($target,$token) = @_;
3133: my $currentstring = '';
3134: if ($target eq 'web') {
3135: $currentstring = $token->[4];
3136: }
3137: return $currentstring;
3138: }
3139:
3140: sub end_col {
3141: my ($target,$token) = @_;
3142: my $currentstring = '';
3143: if ($target eq 'web') {
3144: $currentstring = $token->[2];
3145: }
3146: return $currentstring;
3147: }
3148:
3149: #-- <colgroup> tag (end tag optional)
3150: sub start_colgroup {
3151: my ($target,$token) = @_;
3152: my $currentstring = '';
3153: if ($target eq 'web') {
3154: $currentstring = $token->[4];
3155: }
3156: return $currentstring;
3157: }
3158:
3159: sub end_colgroup {
3160: my ($target,$token) = @_;
3161: my $currentstring = '';
3162: if ($target eq 'web') {
3163: $currentstring = $token->[2];
3164: }
3165: return $currentstring;
3166: }
3167:
3168: #-- <del> tag (end tag required)
3169: sub start_del {
3170: my ($target,$token) = @_;
3171: my $currentstring = '';
3172: if ($target eq 'web') {
3173: $currentstring = $token->[4];
3174: }
3175: return $currentstring;
3176: }
3177:
3178: sub end_del {
3179: my ($target,$token) = @_;
3180: my $currentstring = '';
3181: if ($target eq 'web') {
3182: $currentstring = $token->[2];
3183: }
3184: return $currentstring;
3185: }
3186:
3187: #-- <fieldset> tag (end tag required)
3188: sub start_fieldset {
3189: my ($target,$token) = @_;
3190: my $currentstring = '';
3191: if ($target eq 'web') {
3192: $currentstring = $token->[4];
3193: }
3194: return $currentstring;
3195: }
3196:
3197: sub end_fieldset {
3198: my ($target,$token) = @_;
3199: my $currentstring = '';
3200: if ($target eq 'web') {
3201: $currentstring = $token->[2];
3202: }
3203: return $currentstring;
3204: }
3205:
3206: #-- <frame> tag (end tag forbidden)
3207: sub start_frame {
3208: my ($target,$token) = @_;
3209: my $currentstring = '';
3210: if ($target eq 'web') {
3211: $currentstring = $token->[4];
3212: }
3213: return $currentstring;
3214: }
3215:
3216: sub end_frame {
3217: my ($target,$token) = @_;
3218: my $currentstring = '';
3219: if ($target eq 'web') {
3220: $currentstring = $token->[2];
3221: }
3222: return $currentstring;
3223: }
3224:
3225: #-- <iframe> tag (end tag required)
3226: sub start_iframe {
3227: my ($target,$token) = @_;
3228: my $currentstring = '';
3229: if ($target eq 'web') {
3230: $currentstring = $token->[4];
3231: }
3232: return $currentstring;
3233: }
3234:
3235: sub end_iframe {
3236: my ($target,$token) = @_;
3237: my $currentstring = '';
3238: if ($target eq 'web') {
3239: $currentstring = $token->[2];
3240: }
3241: return $currentstring;
3242: }
3243:
3244: #-- <ins> tag (end tag required)
3245: sub start_ins {
3246: my ($target,$token) = @_;
3247: my $currentstring = '';
3248: if ($target eq 'web') {
3249: $currentstring = $token->[4];
3250: }
3251: return $currentstring;
3252: }
3253:
3254: sub end_ins {
3255: my ($target,$token) = @_;
3256: my $currentstring = '';
3257: if ($target eq 'web') {
3258: $currentstring = $token->[2];
3259: }
3260: return $currentstring;
3261: }
3262:
3263: #-- <isindex> tag (end tag forbidden)
3264: sub start_isindex {
3265: my ($target,$token) = @_;
3266: my $currentstring = '';
3267: if ($target eq 'web') {
3268: $currentstring = $token->[4];
3269: }
3270: return $currentstring;
3271: }
3272:
3273: sub end_isindex {
3274: my ($target,$token) = @_;
3275: my $currentstring = '';
3276: if ($target eq 'web') {
3277: $currentstring = $token->[2];
3278: }
3279: return $currentstring;
3280: }
3281:
3282: #-- <keygen> tag (end tag forbidden)
3283: sub start_keygen {
3284: my ($target,$token) = @_;
3285: my $currentstring = '';
3286: if ($target eq 'web') {
3287: $currentstring = $token->[4];
3288: }
3289: return $currentstring;
3290: }
3291:
3292: sub end_keygen {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web') {
3296: $currentstring = $token->[2];
3297: }
3298: return $currentstring;
3299: }
3300:
3301: #-- <label> tag
3302: sub start_label {
3303: my ($target,$token) = @_;
3304: my $currentstring = '';
3305: if ($target eq 'web') {
3306: $currentstring = $token->[4];
3307: }
3308: return $currentstring;
3309: }
3310:
3311: sub end_label {
3312: my ($target,$token) = @_;
3313: my $currentstring = '';
3314: if ($target eq 'web') {
3315: $currentstring = $token->[2];
3316: }
3317: return $currentstring;
3318: }
3319:
3320: #-- <layer> tag (end tag required)
3321: sub start_layer {
3322: my ($target,$token) = @_;
3323: my $currentstring = '';
3324: if ($target eq 'web') {
3325: $currentstring = $token->[4];
3326: }
3327: return $currentstring;
3328: }
3329:
3330: sub end_layer {
3331: my ($target,$token) = @_;
3332: my $currentstring = '';
3333: if ($target eq 'web') {
3334: $currentstring = $token->[2];
3335: }
3336: return $currentstring;
3337: }
3338:
3339: #-- <legend> tag (end tag required)
3340: sub start_legend {
3341: my ($target,$token) = @_;
3342: my $currentstring = '';
3343: if ($target eq 'web') {
3344: $currentstring = $token->[4];
3345: }
3346: return $currentstring;
3347: }
3348:
3349: sub end_legend {
3350: my ($target,$token) = @_;
3351: my $currentstring = '';
3352: if ($target eq 'web') {
3353: $currentstring = $token->[2];
3354: }
3355: return $currentstring;
3356: }
3357:
3358: #-- <link> tag (end tag forbidden)
3359: sub start_link {
3360: my ($target,$token) = @_;
3361: my $currentstring = '';
3362: if ($target eq 'web') {
3363: $currentstring = $token->[4];
3364: }
3365: return $currentstring;
3366: }
3367:
3368: sub end_link {
3369: my ($target,$token) = @_;
3370: my $currentstring = '';
3371: if ($target eq 'web') {
3372: $currentstring = $token->[2];
3373: }
3374: return $currentstring;
3375: }
3376:
3377: #-- <marquee> tag (end tag optional)
3378: sub start_marquee {
3379: my ($target,$token) = @_;
3380: my $currentstring = '';
3381: if ($target eq 'web') {
3382: $currentstring = $token->[4];
3383: }
3384: return $currentstring;
3385: }
3386:
3387: sub end_marquee {
3388: my ($target,$token) = @_;
3389: my $currentstring = '';
3390: if ($target eq 'web') {
3391: $currentstring = $token->[2];
3392: }
3393: return $currentstring;
3394: }
3395:
3396: #-- <multicol> tag (end tag required)
3397: sub start_multicol {
3398: my ($target,$token) = @_;
3399: my $currentstring = '';
3400: if ($target eq 'web') {
3401: $currentstring = $token->[4];
3402: }
3403: return $currentstring;
3404: }
3405:
3406: sub end_multicol {
3407: my ($target,$token) = @_;
3408: my $currentstring = '';
3409: if ($target eq 'web') {
3410: $currentstring = $token->[2];
3411: }
3412: return $currentstring;
3413: }
3414:
3415: #-- <nobr> tag (end tag required)
3416: sub start_nobr {
3417: my ($target,$token) = @_;
3418: my $currentstring = '';
3419: if ($target eq 'web') {
3420: $currentstring = $token->[4];
3421: } elsif ($target eq 'tex') {
3422: $currentstring='\mbox{';
3423: }
3424: return $currentstring;
3425: }
3426:
3427: sub end_nobr {
3428: my ($target,$token) = @_;
3429: my $currentstring = '';
3430: if ($target eq 'web') {
3431: $currentstring = $token->[2];
3432: } elsif ($target eq 'tex') {
3433: $currentstring='}';
3434: }
3435: return $currentstring;
3436: }
3437:
3438: #-- <noembed> tag (end tag required)
3439: sub start_noembed {
3440: my ($target,$token) = @_;
3441: my $currentstring = '';
3442: if ($target eq 'web') {
3443: $currentstring = $token->[4];
3444: }
3445: return $currentstring;
3446: }
3447:
3448: sub end_noembed {
3449: my ($target,$token) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web') {
3452: $currentstring = $token->[2];
3453: }
3454: return $currentstring;
3455: }
3456:
3457: #-- <noframes> tag (end tag required)
3458: sub start_noframes {
3459: my ($target,$token) = @_;
3460: my $currentstring = '';
3461: if ($target eq 'web') {
3462: $currentstring = $token->[4];
3463: }
3464: return $currentstring;
3465: }
3466:
3467: sub end_noframes {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web') {
3471: $currentstring = $token->[2];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: #-- <nolayer> tag (end tag required)
3477: sub start_nolayer {
3478: my ($target,$token) = @_;
3479: my $currentstring = '';
3480: if ($target eq 'web') {
3481: $currentstring = $token->[4];
3482: }
3483: return $currentstring;
3484: }
3485:
3486: sub end_nolayer {
3487: my ($target,$token) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web') {
3490: $currentstring = $token->[2];
3491: }
3492: return $currentstring;
3493: }
3494:
3495: #-- <noscript> tag (end tag required)
3496: sub start_noscript {
3497: my ($target,$token) = @_;
3498: my $currentstring = '';
3499: if ($target eq 'web') {
3500: $currentstring = $token->[4];
3501: }
3502: return $currentstring;
3503: }
3504:
3505: sub end_noscript {
3506: my ($target,$token) = @_;
3507: my $currentstring = '';
3508: if ($target eq 'web') {
3509: $currentstring = $token->[2];
3510: }
3511: return $currentstring;
3512: }
3513:
3514: #-- <object> tag (end tag required)
3515: sub start_object {
3516: my ($target,$token) = @_;
3517: my $currentstring = '';
3518: if ($target eq 'web') {
3519: $currentstring = $token->[4];
3520: }
3521: return $currentstring;
3522: }
3523:
3524: sub end_object {
3525: my ($target,$token) = @_;
3526: my $currentstring = '';
3527: if ($target eq 'web') {
3528: $currentstring = $token->[2];
3529: }
3530: return $currentstring;
3531: }
3532:
3533: #-- <optgroup> tag (end tag required)
3534: sub start_optgroup {
3535: my ($target,$token) = @_;
3536: my $currentstring = '';
3537: if ($target eq 'web') {
3538: $currentstring = $token->[4];
3539: }
3540: return $currentstring;
3541: }
3542:
3543: sub end_optgroup {
3544: my ($target,$token) = @_;
3545: my $currentstring = '';
3546: if ($target eq 'web') {
3547: $currentstring = $token->[2];
3548: }
3549: return $currentstring;
3550: }
3551:
3552: #-- <samp> tag (end tag required)
3553: sub start_samp {
3554: my ($target,$token) = @_;
3555: my $currentstring = '';
3556: if ($target eq 'web') {
3557: $currentstring = $token->[4];
3558: } elsif ($target eq 'tex') {
3559: $currentstring='\texttt{';
3560: }
3561: return $currentstring;
3562: }
3563:
3564: sub end_samp {
3565: my ($target,$token) = @_;
3566: my $currentstring = '';
3567: if ($target eq 'web') {
3568: $currentstring = $token->[2];
3569: } elsif ($target eq 'tex') {
3570: $currentstring='}';
3571: }
3572: return $currentstring;
3573: }
3574:
3575: #-- <server> tag
3576: sub start_server {
3577: my ($target,$token) = @_;
3578: my $currentstring = '';
3579: if ($target eq 'web') {
3580: $currentstring = $token->[4];
3581: }
3582: return $currentstring;
3583: }
3584:
3585: sub end_server {
3586: my ($target,$token) = @_;
3587: my $currentstring = '';
3588: if ($target eq 'web') {
3589: $currentstring = $token->[2];
3590: }
3591: return $currentstring;
3592: }
3593:
3594: #-- <spacer> tag (end tag forbidden)
3595: sub start_spacer {
3596: my ($target,$token) = @_;
3597: my $currentstring = '';
3598: if ($target eq 'web') {
3599: $currentstring = $token->[4];
3600: }
3601: return $currentstring;
3602: }
3603:
3604: sub end_spacer {
3605: my ($target,$token) = @_;
3606: my $currentstring = '';
3607: if ($target eq 'web') {
3608: $currentstring = $token->[2];
3609: }
3610: return $currentstring;
3611: }
3612:
3613: #-- <span> tag (end tag required)
3614: sub start_span {
3615: my ($target,$token) = @_;
3616: my $currentstring = '';
3617: if ($target eq 'web') {
3618: $currentstring = $token->[4];
3619: }
3620: return $currentstring;
3621: }
3622:
3623: sub end_span {
3624: my ($target,$token) = @_;
3625: my $currentstring = '';
3626: if ($target eq 'web') {
3627: $currentstring = $token->[2];
3628: }
3629: return $currentstring;
3630: }
3631:
3632: #-- <tbody> tag (end tag optional)
3633: sub start_tbody {
3634: my ($target,$token) = @_;
3635: my $currentstring = '';
3636: if ($target eq 'web') {
3637: $currentstring = $token->[4];
3638: }
3639: return $currentstring;
3640: }
3641:
3642: sub end_tbody {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web') {
3646: $currentstring = $token->[2];
3647: }
3648: return $currentstring;
3649: }
3650:
3651: #-- <tfoot> tag (end tag optional)
3652: sub start_tfoot {
3653: my ($target,$token) = @_;
3654: my $currentstring = '';
3655: if ($target eq 'web') {
3656: $currentstring = $token->[4];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: sub end_tfoot {
3662: my ($target,$token) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web') {
3665: $currentstring = $token->[2];
3666: }
3667: return $currentstring;
3668: }
3669:
3670: #-- <thead> tag (end tag optional)
3671: sub start_thead {
3672: my ($target,$token) = @_;
3673: my $currentstring = '';
3674: if ($target eq 'web') {
3675: $currentstring = $token->[4];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: sub end_thead {
3681: my ($target,$token) = @_;
3682: my $currentstring = '';
3683: if ($target eq 'web') {
3684: $currentstring = $token->[2];
3685: }
3686: return $currentstring;
3687: }
3688:
3689: #-- <var> tag
3690: sub start_var {
3691: my ($target,$token) = @_;
3692: my $currentstring = '';
3693: if ($target eq 'web') {
3694: $currentstring = $token->[4];
3695: } elsif ($target eq 'tex') {
3696: $currentstring = '\textit{';
3697: }
3698: return $currentstring;
3699: }
3700:
3701: sub end_var {
3702: my ($target,$token) = @_;
3703: my $currentstring = '';
3704: if ($target eq 'web') {
3705: $currentstring = $token->[2];
3706: } elsif ($target eq 'tex') {
3707: $currentstring = '}';
3708: }
3709: return $currentstring;
3710: }
3711:
3712: #-- <wbr> tag (end tag forbidden)
3713: sub start_wbr {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web') {
3717: $currentstring = $token->[4];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: sub end_wbr {
3723: my ($target,$token) = @_;
3724: my $currentstring = '';
3725: if ($target eq 'web') {
3726: $currentstring = $token->[2];
3727: }
3728: return $currentstring;
3729: }
3730:
3731: #-- <hideweboutput> tag
3732: sub start_hideweboutput {
3733: my ($target,$token) = @_;
3734: if ($target eq 'web') {
3735: &Apache::lonxml::startredirection();
3736: }
3737: return '';
3738: }
3739:
3740: sub end_hideweboutput {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web') {
3744: $currentstring = &Apache::lonxml::endredirection();
3745: }
3746: return '';
3747: }
3748:
3749:
3750: sub image_replication {
3751: my $src = shift;
3752: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3753: #replicates eps or ps
3754: my $epssrc = my $pssrc = $src;
3755: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3756: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3757: if (not -e $epssrc && not -e $pssrc) {
3758: my $result=&Apache::lonnet::repcopy($epssrc);
3759: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
3760: }
3761: return '';
3762: }
3763:
3764: sub image_size {
3765: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3766:
3767: #size of image from gif/jpg/jpeg/png
3768: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3769: if (-e $ressrc) {
3770: $src = $ressrc;
3771: }
3772: my $image = Image::Magick->new;
3773: my $current_figure = $image->Read($src);
3774: my $width_param = $image->Get('width') * $scaling;;
3775: my $height_param = $image->Get('height') * $scaling;
3776: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
3777: undef($image);
3778: #do we have any specified LaTeX size of the picture?
3779: my $toget='TeXwidth';
3780: if ($cis) {
3781: $toget=lc($toget);
3782: }
3783: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3784: $safeeval,$depth,$cis);
3785: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3786: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3787: $safeeval,$depth,$cis);
3788: #do we have any specified web size of the picture?
3789: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3790: $depth,1);
3791: if ($TeXwidth) {
3792: my $old_width_param=$width_param;
3793: if ($TeXwidth=~/(\d+)\s*\%/) {
3794: $width_param = $1*$ENV{'form.textwidth'}/100;
3795: } else {
3796: $width_param = $TeXwidth;
3797: }
3798: $height_param=$TeXwidth/$old_width_param*$height_param;
3799: } elsif ($TeXheight) {
3800: $height_param = $TeXheight;
3801: $width_param = $TeXheight/$height_param*$width_param;
3802: } elsif ($width) {
3803: my $old_width_param=$width_param;
3804: $width_param = $width*$scaling;
3805: $height_param=$width_param/$old_width_param*$height_param;
3806: }
3807: if ($width_param > $ENV{'form.textwidth'}) {
3808: my $old_width_param=$width_param;
3809: $width_param =0.95*$ENV{'form.textwidth'};
3810: $height_param=$width_param/$old_width_param*$height_param;
3811: }
3812: return ($height_param, $width_param);
3813: }
3814:
3815: sub image_width {
3816: my ($height, $width) = &image_size(@_);
3817: return $width;
3818: }
3819: # Not yet 100% sure this is correct in all circumstances..
3820: # due to my uncertainty about mods to image_size.
3821: #
3822: sub image_height {
3823: my ($height, $width) = &image_size(@_);
3824: return $height;
3825: }
3826:
3827: sub get_eps_image {
3828: my ($src)=@_;
3829: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
3830: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src<BR />");
3831: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3832: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3833: &Apache::lonxml::debug("Filelocation gives; $src <BR />");
3834: if (! -e $src) {
3835: &Apache::lonxml::debug("$src does not exist");
3836: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
3837: &Apache::lonxml::debug("Repcopy of $src failed (1)");
3838: #if replication failed try to find ps file
3839: $src=~s/\.eps$/\.ps/;
3840: &Apache::lonxml::debug("Now looking for $src");
3841: #if no ps file try to replicate it
3842: if (not -e $src &&
3843: &Apache::lonnet::repcopy($src) ne 'ok') {
3844: &Apache::lonxml::debug("Failed to find or replicate $src");
3845:
3846: #if replication failed try to produce eps file dynamically
3847: $src=~s/\.ps$/\.eps/;
3848: my $temp_file;
3849: open(FILE,">>/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat");
3850: my $newsrc=$orig_src;
3851: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
3852: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production. <BR/>");
3853: print FILE "$newsrc\n";
3854: close FILE;
3855: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
3856: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
3857: }
3858: }
3859: }
3860: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
3861: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
3862: return ($path.'/',$file);
3863: }
3864:
3865: sub eps_generation {
3866: my ($src,$file,$width_param) = @_;
3867: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3868: my $temp_file = Apache::File->new('>>'.$filename);
3869: print $temp_file "$src\n";
3870: my $newsrc = $src;
3871: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3872: $newsrc=~s/\/home\/httpd\/html\/res//;
3873: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3874: $newsrc=~s/\/\.\//\//;
3875: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3876: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3877: $newsrc=~s/\/home\/httpd\/lonUsers//;
3878: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3879: }
3880: if ($newsrc=~/\/userfiles\//) {
3881: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3882: } else {
3883: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3884: }
3885: }
3886:
3887: sub file_path {
3888: my $src=shift;
3889: my ($file,$path);
3890: if ($src =~ m!(.*)/([^/]*)$!) {
3891: $file = $2;
3892: $path = $1.'/';
3893: }
3894: return $file,$path;
3895: }
3896:
3897: sub recalc {
3898: my $argument = shift;
3899: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3900: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3901: my $value=$1;
3902: my $units=$2;
3903: if ($units eq 'cm') {
3904: $value*=10;
3905: } elsif ($units eq 'in') {
3906: $value*=25.4;
3907: } elsif ($units eq 'pc') {
3908: $value*=(25.4*12/72.27);
3909: } elsif ($units eq 'pt') {
3910: $value*=(25.4/72.27);
3911: }
3912: return $value.' mm';
3913: }
3914:
3915: sub LATEX_length {
3916: my $garbage=shift;
3917: $garbage=~s/^\s+$//;
3918: $garbage=~s/^\s+(\S.*)/$1/;#space before
3919: $garbage=~s/(.*\S)\s+$/$1/;#space after
3920: $garbage=~s/(\s)+/$1/;#only one space
3921: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3922: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3923: $garbage=~s/([^\\])\$/$1/g;#$
3924: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3925: $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;
3926: $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;
3927: $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;
3928: $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;
3929: $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;
3930: $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;
3931: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3932: #remove some other LaTeX command
3933: $garbage=~s|\\(\w+)\\|\\|g;
3934: $garbage=~s|\\(\w+)(\s*)|$2|g;
3935: $garbage=~s|\+|11|g;
3936: my $value=length($garbage);
3937: return $value;
3938: }
3939:
3940:
3941:
3942:
3943: 1;
3944: __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