1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.249 2004/12/29 11:39:25 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39: #
40: # last modified 06/26/00 by Alexander Sakharuk
41: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
42: # 01/18 Alex Sakharuk
43:
44: package Apache::londefdef;
45:
46: use Apache::lonnet();
47: use strict;
48: use Apache::lonxml;
49: use Apache::File();
50: use Image::Magick;
51: use Apache::lonmenu();
52: use Apache::lonmeta();
53: use Apache::Constants qw(:common);
54:
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62: sub initialize_londefdef {
63: $Apache::londefdef::TD_redirection=0;
64: @Apache::londefdef::table = ();
65: $Apache::londefdef::select=0;
66: undef(@Apache::londefdef::description);
67: @Apache::londefdef::DD=(0);
68: @Apache::londefdef::DT=(0);
69: @Apache::londefdef::seenDT=(0);
70: $Apache::londefdef::list_index=0;
71: }
72:
73: #======================= TAG SUBROUTINES =====================
74: #-- <output>
75: sub start_output {
76: my ($target) = @_;
77: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
78: return '';
79: }
80: sub end_output {
81: my ($target) = @_;
82: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
83: return '';
84: }
85: #-- <m> tag
86: sub start_m {
87: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
88: my $currentstring = '';
89: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
90: if ($target eq 'web' || $target eq 'analyze') {
91: $inside ='\\documentstyle{article}'.$inside;
92: &Apache::lonxml::debug("M is starting with:$inside:");
93: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
94: if ($eval eq 'on') {
95: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
96: #&Apache::lonxml::debug("M is evaulated to:$inside:");
97: }
98: $currentstring = &Apache::lontexconvert::converted(\$inside);
99: if ($Apache::lontexconvert::errorstring) {
100: &Apache::lonxml::warning("tth error: ".
101: $Apache::lontexconvert::errorstring);
102: $Apache::lontexconvert::errorstring='';
103: }
104: #&Apache::lonxml::debug("M is ends with:$currentstring:");
105: $Apache::lonxml::post_evaluate=0;
106: } elsif ($target eq 'tex') {
107: $currentstring = $inside;
108: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
109: if ($eval eq 'on') {
110: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
111: }
112: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
113: $Apache::lonxml::post_evaluate=0;
114: }
115: return $currentstring;
116: }
117:
118: sub end_m {
119: my ($target,$token) = @_;
120: my $currentstring = '';
121: if ($target eq 'tex') {
122: $currentstring = "";
123: }
124: return $currentstring;
125: }
126:
127: sub start_tthoption {
128: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
129: my $result;
130: if ($target eq 'web') {
131: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
132: $inside=~s/^\s*//;
133: if ($ENV{'browser.mathml'}) {
134: &tth::ttmoptions($inside);
135: } else {
136: &tth::tthoptions($inside);
137: }
138: }
139: return $result;
140: }
141:
142: sub end_tthoption {
143: my ($target,$token) = @_;
144: my $result;
145: return $result;
146: }
147:
148: #-- <html> tag (end tag optional)
149: sub start_html {
150: my ($target,$token) = @_;
151: my $currentstring = '';
152: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
153: &Apache::lontexconvert::init_tth();
154: if ($target eq 'web' || $target eq 'edit') {
155: $currentstring = &Apache::lonxml::xmlbegin();
156: } elsif ($target eq 'tex') {
157: @Apache::londefdef::table = ();
158: $currentstring .= '\documentclass[letterpaper]{article}';
159: if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
160: $currentstring .= '\newcommand{\keephidden}[1]{}'.
161: '\renewcommand{\deg}{$^{\circ}$}'.
162: '\usepackage{longtable}'.
163: '\usepackage{textcomp}'.
164: '\usepackage{makeidx}'.
165: '\usepackage[dvips]{graphicx}'.
166: '\usepackage{picins}'.
167: '\usepackage{epsfig}'.
168: '\usepackage{calc}'.
169: '\usepackage{amsmath}'.
170: '\usepackage{amssymb}'.
171: '\usepackage{amsfonts}'.
172: '\usepackage{amsthm}'.
173: '\usepackage{amscd}'.
174: '\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}}'.
175: '\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}}';
176: }
177: return $currentstring;
178: }
179:
180: sub end_html {
181: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
182: my $currentstring = '';
183: if ($target eq 'web') {
184: $currentstring = &Apache::lonxml::xmlend($target,$parser);
185: }
186: return $currentstring;
187: }
188:
189: #-- <head> tag (end tag optional)
190: sub start_head {
191: my ($target,$token) = @_;
192: my $currentstring = '';
193: if ($target eq 'web') {
194: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
195: }
196: return $currentstring;
197: }
198:
199: sub end_head {
200: my ($target,$token) = @_;
201: my $currentstring = '';
202: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
203: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
204: $token->[2];
205: }
206: return $currentstring;
207: }
208:
209: #-- <map> tag (end tag required)
210: sub start_map {
211: my ($target,$token) = @_;
212: my $currentstring = '';
213: if ($target eq 'web') {
214: $currentstring = $token->[4];
215: }
216: return $currentstring;
217: }
218:
219: sub end_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web') {
223: $currentstring = $token->[2];
224: }
225: return $currentstring;
226: }
227:
228: #-- <select> tag (end tag required)
229: sub start_select {
230: my ($target,$token) = @_;
231: my $currentstring = '';
232: if ($target eq 'web') {
233: $currentstring = $token->[4];
234: } elsif ($target eq 'tex') {
235: $Apache::londefdef::select=0;
236: }
237: return $currentstring;
238: }
239:
240: sub end_select {
241: my ($target,$token) = @_;
242: my $currentstring = '';
243: if ($target eq 'web') {
244: $currentstring = $token->[2];
245: }
246: return $currentstring;
247: }
248:
249: #-- <option> tag (end tag optional)
250: sub start_option {
251: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
252: my $currentstring = '';
253: if ($target eq 'web') {
254: $currentstring = $token->[4];
255: } elsif ($target eq 'tex') {
256: $Apache::londefdef::select++;
257: if ($Apache::londefdef::select == 1) {
258: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
259: } else {
260: $currentstring='\keephidden{';
261: }
262: }
263: return $currentstring;
264: }
265:
266: sub end_option {
267: my ($target,$token) = @_;
268: my $currentstring = '';
269: if ($target eq 'web') {
270: $currentstring = $token->[2];
271: } elsif ($target eq 'tex') {
272: $currentstring='}';
273: }
274: return $currentstring;
275: }
276:
277: #-- <input> tag (end tag forbidden)
278: sub start_input {
279: my ($target,$token) = @_;
280: my $currentstring = '';
281: if ($target eq 'web') {
282: $currentstring = $token->[4];
283: }
284: return $currentstring;
285: }
286:
287: sub end_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web') {
291: $currentstring = $token->[2];
292: }
293: return $currentstring;
294: }
295:
296: #-- <textarea> tag (end tag required)
297: sub start_textarea {
298: my ($target,$token) = @_;
299: my $currentstring = '';
300: if ($target eq 'web') {
301: $currentstring = $token->[4];
302: }
303: return $currentstring;
304: }
305:
306: sub end_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web') {
310: $currentstring = $token->[2];
311: }
312: return $currentstring;
313: }
314:
315: #-- <form> tag (end tag required)
316: sub start_form {
317: my ($target,$token) = @_;
318: my $currentstring = '';
319: if ($target eq 'web') {
320: $currentstring = $token->[4];
321: }
322: return $currentstring;
323: }
324:
325: sub end_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web') {
329: $currentstring = $token->[2];
330: }
331: return $currentstring;
332: }
333:
334: #-- <title> tag (end tag required)
335: sub start_title {
336: my ($target,$token) = @_;
337: my $currentstring = '';
338: if ($target eq 'web') {
339: $currentstring = $token->[4];
340: } elsif ($target eq 'tex') {
341: $currentstring .= '\keephidden{Title of the document: '
342: }
343: if ($target eq 'meta') {
344: $currentstring='<title>';
345: &start_output($target);
346: }
347: return $currentstring;
348: }
349:
350: sub end_title {
351: my ($target,$token) = @_;
352: my $currentstring = '';
353: if ($target eq 'web') {
354: $currentstring = $token->[2];
355: } elsif ($target eq 'tex') {
356: $currentstring .= '}';
357: }
358: if ($target eq 'meta') {
359: &end_output($target);
360: $currentstring='</title>';
361: }
362: return $currentstring;
363: }
364:
365: #-- <meta> tag (end tag forbidden)
366: sub start_meta {
367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
368: my $currentstring = '';
369: if ($target eq 'web') {
370: my $args='';
371: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
372: if ($args eq '') {
373: &Apache::lonxml::get_all_text("/meta",$parser);
374: } else {
375: $currentstring = $token->[4];
376: }
377: } elsif ($target eq 'meta') {
378: unless (&Apache::lonxml::get_param
379: ('http-equiv',$parstack,$safeeval,undef,1)) {
380: my $name=$token->[2]->{'name'};
381: $name=~tr/A-Z/a-z/;
382: $name=~s/\s/\_/gs;
383: $name=~s/\W//gs;
384: if ($name) {
385: $currentstring='<'.$name;
386: my $display=&Apache::lonxml::get_param
387: ('display',$parstack,$safeeval,undef,1);
388: if ($display) {
389: $display=~s/\"/\'/g;
390: $currentstring.=' display="'.$display.'"';
391: }
392: $currentstring.='>'.
393: &Apache::lonxml::get_param
394: ('content',$parstack,$safeeval,undef,1).
395: '</'.$name.'>';
396: }
397: my $display=&Apache::lonxml::get_param
398: ('display',$parstack,$safeeval,undef,1);
399: if ($display) {
400: $display=&HTML::Entities::encode($display,'<>&"');
401: $currentstring.='<'.$name.'.display>'.$display.
402: '</'.$name.'.display>';
403: }
404: }
405: } elsif ($target eq 'tex') {
406: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
407: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
408: if ((not defined $content) && (not defined $name)) {
409: &Apache::lonxml::startredirection();
410: }
411: }
412: return $currentstring;
413: }
414:
415: sub end_meta {
416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
417: my $currentstring = '';
418: if ($target eq 'web') {
419: my $args='';
420: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
421: if ($args ne '') {
422: $currentstring = $token->[4];
423: }
424: } elsif ($target eq 'tex') {
425: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
426: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
427: if ((not defined $content) && (not defined $name)) {
428: &Apache::lonxml::endredirection();
429: }
430: }
431: return $currentstring;
432: }
433:
434: # accessrule
435: sub start_accessrule {
436: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
437: my $currentstring = '';
438: my $eff=&Apache::lonxml::get_param
439: ('effect',$parstack,$safeeval,undef,1);
440: my $realm=&Apache::lonxml::get_param
441: ('realm',$parstack,$safeeval,undef,1);
442: my $role=&Apache::lonxml::get_param
443: ('role',$parstack,$safeeval,undef,1);
444: $realm=~s/\s+//g;
445: $realm=~s/\//\_/g;
446: $realm=~s/^\_//;
447: $realm=~s/\W/\;/g;
448: $role=~s/\s+//g;
449: $role=~s/\//\_/g;
450: $role=~s/\W/\;/g;
451: if ($target eq 'web') {
452: my $args='';
453: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
454: if ($args eq '') {
455: &Apache::lonxml::get_all_text("/accessrule",$parser);
456: } else {
457: $currentstring = $token->[4];
458: }
459: }
460: if ($target eq 'meta') {
461: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
462: }
463: return $currentstring;
464: }
465:
466: sub end_accessrule {
467: my ($target,$token,$tagstack,$parstack,$parser) = @_;
468: my $currentstring = '';
469: if ($target eq 'web') {
470: my $args='';
471: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
472: if ($args ne '') {
473: $currentstring = $token->[4];
474: }
475: }
476: return $currentstring;
477: }
478:
479: #-- <body> tag (end tag required)
480: sub start_body {
481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
482: my $currentstring = '';
483:
484: if ($target eq 'web') {
485: if ($Apache::lonhomework::parsing_a_problem) {
486: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
487: return '';
488: }
489: if (!$Apache::lonxml::registered &&
490: $ENV{'request.state'} eq 'published') {
491: $currentstring.='<head>'.
492: &Apache::lonmenu::registerurl(undef,$target).'</head>';
493: }
494: # Accessibility
495: if ($ENV{'browser.imagesuppress'} eq 'on') {
496: delete($token->[2]->{'background'});
497: }
498: if ($ENV{'browser.fontenhance'} eq 'on') {
499: my $style='';
500: foreach my $key (keys(%{$token->[2]})) {
501: if ($key =~ /^style$/i) {
502: $style.=$token->[2]->{$key}.';';
503: delete($token->[2]->{$key});
504: }
505: }
506: $token->[2]->{'style'}=$style.'; font-size: x-large;';
507: }
508: if ($ENV{'browser.blackwhite'} eq 'on') {
509: delete($token->[2]->{'font'});
510: delete($token->[2]->{'link'});
511: delete($token->[2]->{'alink'});
512: delete($token->[2]->{'vlink'});
513: delete($token->[2]->{'bgcolor'});
514: delete($token->[2]->{'background'});
515: }
516: # Overload loads
517: my $onLoad='';
518: foreach my $key (keys(%{$token->[2]})) {
519: if ($key =~ /^onload$/i) {
520: $onLoad.=$token->[2]->{$key}.';';
521: delete($token->[2]->{$key});
522: }
523: }
524: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
525: my $onUnload='';
526: foreach my $key (keys(%{$token->[2]})) {
527: if ($key =~ /^onunload$/i) {
528: $onUnload.=$token->[2]->{$key}.';';
529: delete($token->[2]->{$key});
530: }
531: }
532: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
533: ';'.$onUnload;
534:
535: if ($ENV{'request.state'} ne 'construct') {
536: $currentstring .= '<'.$token->[1];
537: }
538: foreach (keys %{$token->[2]}) {
539: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
540: }
541: if ($ENV{'request.state'} ne 'construct') {
542: $currentstring.='>';
543: }
544: if ($ENV{'request.state'} ne 'published') {
545: my $remote=($ENV{'environment.remote'} ne 'off');
546: $currentstring=&Apache::loncommon::bodytag(undef,undef,
547: $currentstring,$remote);
548: $currentstring.=(<<EDITBUTTON);
549: <form method="post">
550: <input type="submit" name="editmode" accesskey="e" value="Edit" />
551: </form>
552: EDITBUTTON
553: } else {
554: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
555: }
556: $currentstring.=&Apache::lonxml::message_location();
557: } elsif ($target eq 'tex') {
558: $currentstring = '\begin{document}';
559: }
560: return $currentstring;
561: }
562:
563: sub end_body {
564: my ($target,$token) = @_;
565: my $currentstring = '';
566: if ($target eq 'web') {
567: $currentstring = $token->[2];
568: } elsif ($target eq 'tex') {
569: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
570: }
571: return $currentstring;
572: }
573:
574: #-- <center> tag (end tag required)
575: sub start_center {
576: my ($target,$token) = @_;
577: my $currentstring = '';
578: if ($target eq 'web') {
579: $currentstring = $token->[4];
580: } elsif ($target eq 'tex') {
581: $currentstring = '\begin{center}';
582: }
583: return $currentstring;
584: }
585:
586: sub end_center {
587: my ($target,$token) = @_;
588: my $currentstring = '';
589: if ($target eq 'web') {
590: $currentstring = $token->[2];
591: } elsif ($target eq 'tex') {
592: $currentstring = '\end{center}';
593: }
594: return $currentstring;
595: }
596:
597: #-- <b> tag (end tag required)
598: sub start_b {
599: my ($target,$token) = @_;
600: my $currentstring = '';
601: if ($target eq 'web') {
602: $currentstring = $token->[4];
603: } elsif ($target eq 'tex') {
604: $currentstring = '\textbf{';
605: }
606: return $currentstring;
607: }
608:
609: sub end_b {
610: my ($target,$token) = @_;
611: my $currentstring = '';
612: if ($target eq 'web') {
613: $currentstring = $token->[2];
614: } elsif ($target eq 'tex') {
615: $currentstring = '}';
616: }
617: return $currentstring;
618: }
619:
620: #-- <strong> tag (end tag required)
621: sub start_strong {
622: my ($target,$token) = @_;
623: my $currentstring = '';
624: if ($target eq 'web') {
625: $currentstring = $token->[4];
626: } elsif ($target eq 'tex') {
627: $currentstring = '\textbf{';
628: }
629: return $currentstring;
630: }
631:
632: sub end_strong {
633: my ($target,$token) = @_;
634: my $currentstring = '';
635: if ($target eq 'web') {
636: $currentstring = $token->[2];
637: } elsif ($target eq 'tex') {
638: $currentstring = '}';
639: }
640: return $currentstring;
641: }
642:
643: #-- <h1> tag (end tag required)
644: sub start_h1 {
645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
646: my $currentstring = '';
647: if ($target eq 'web') {
648: $currentstring .= $token->[4];
649: } elsif ($target eq 'tex') {
650: my $pre;
651: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
652: if ($align eq 'center') {
653: $pre='\begin{center}';
654: } elsif ($align eq 'left') {
655: $pre='\rlap{';
656: } elsif ($align eq 'right') {
657: $pre=' \hfill \llap{';
658: }
659: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
660: if (not defined $TeXsize) {$TeXsize="large";}
661: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
662: } elsif ($target eq 'meta') {
663: $currentstring='<subject>';
664: &start_output($target);
665: }
666: return $currentstring;
667: }
668:
669: sub end_h1 {
670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
671: my $currentstring = '';
672: if ($target eq 'web') {
673: $currentstring .= $token->[2];
674: } elsif ($target eq 'tex') {
675: my $post='\vskip 0 mm ';
676: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
677: if ($align eq 'center') {
678: $post='\end{center}';
679: } elsif ($align eq 'left') {
680: $post='} \hfill'.'\vskip 0 mm ';
681: } elsif ($align eq 'right') {
682: $post='}'.'\vskip 0 mm ';
683: }
684: $currentstring .= '}}'.$post;
685: } elsif ($target eq 'meta') {
686: &end_output($target);
687: $currentstring='</subject>';
688: }
689: return $currentstring;
690: }
691:
692: #-- <h2> tag
693: sub start_h2 {
694: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
695: my $currentstring = '';
696: if ($target eq 'web') {
697: $currentstring .= $token->[4];
698: } elsif ($target eq 'tex') {
699: my $pre;
700: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
701: if ($align eq 'center') {
702: $pre='\begin{center}';
703: } elsif ($align eq 'left') {
704: $pre='\rlap{';
705: } elsif ($align eq 'right') {
706: $pre=' \hfill \llap{';
707: }
708: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
709: if (not defined $TeXsize) {$TeXsize="large";}
710: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
711: }
712: return $currentstring;
713: }
714:
715: sub end_h2 {
716: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
717: my $currentstring = '';
718: if ($target eq 'web') {
719: $currentstring .= $token->[2];
720: } elsif ($target eq 'tex') {
721: my $post='\vskip 0 mm ';
722: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
723: if ($align eq 'center') {
724: $post='\end{center}';
725: } elsif ($align eq 'left') {
726: $post='} \hfill'.'\vskip 0 mm ';
727: } elsif ($align eq 'right') {
728: $post='}'.'\vskip 0 mm ';
729: }
730: $currentstring .= '}}'.$post;
731: }
732: return $currentstring;
733: }
734:
735: #-- <h3> tag
736: sub start_h3 {
737: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
738: my $currentstring = '';
739: if ($target eq 'web') {
740: $currentstring .= $token->[4];
741: } elsif ($target eq 'tex') {
742: my $pre;
743: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
744: if ($align eq 'center') {
745: $pre='\begin{center}';
746: } elsif ($align eq 'left') {
747: $pre='\rlap{';
748: } elsif ($align eq 'right') {
749: $pre=' \hfill \llap{';
750: }
751: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
752: if (not defined $TeXsize) {$TeXsize="large";}
753: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
754: }
755: return $currentstring;
756: }
757:
758: sub end_h3 {
759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
760: my $currentstring = '';
761: if ($target eq 'web') {
762: $currentstring .= $token->[2];
763: } elsif ($target eq 'tex') {
764: my $post='\vskip 0 mm ';
765: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
766: if ($align eq 'center') {
767: $post='\end{center}';
768: } elsif ($align eq 'left') {
769: $post='} \hfill'.'\vskip 0 mm ';
770: } elsif ($align eq 'right') {
771: $post='}'.'\vskip 0 mm ';
772: }
773: $currentstring .= '}}'.$post;
774: }
775: return $currentstring;
776: }
777:
778: #-- <h4> tag
779: sub start_h4 {
780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
781: my $currentstring = '';
782: if ($target eq 'web') {
783: $currentstring .= $token->[4];
784: } elsif ($target eq 'tex') {
785: my $pre;
786: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
787: if ($align eq 'center') {
788: $pre='\begin{center}';
789: } elsif ($align eq 'left') {
790: $pre='\rlap{';
791: } elsif ($align eq 'right') {
792: $pre=' \hfill \llap{';
793: }
794: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
795: if (not defined $TeXsize) {$TeXsize="large";}
796: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
797: }
798: return $currentstring;
799: }
800:
801: sub end_h4 {
802: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
803: my $currentstring = '';
804: if ($target eq 'web') {
805: $currentstring .= $token->[2];
806: } elsif ($target eq 'tex') {
807: my $post='\vskip 0 mm ';
808: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
809: if ($align eq 'center') {
810: $post='\end{center}';
811: } elsif ($align eq 'left') {
812: $post='} \hfill'.'\vskip 0 mm ';
813: } elsif ($align eq 'right') {
814: $post='}'.'\vskip 0 mm ';
815: }
816: $currentstring .= '}}'.$post;
817: }
818: return $currentstring;
819: }
820:
821: #-- <h5> tag
822: sub start_h5 {
823: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
824: my $currentstring = '';
825: if ($target eq 'web') {
826: $currentstring .= $token->[4];
827: } elsif ($target eq 'tex') {
828: my $pre;
829: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
830: if ($align eq 'center') {
831: $pre='\begin{center}';
832: } elsif ($align eq 'left') {
833: $pre='\rlap{';
834: } elsif ($align eq 'right') {
835: $pre=' \hfill \llap{';
836: }
837: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
838: if (not defined $TeXsize) {$TeXsize="large";}
839: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
840: }
841: return $currentstring;
842: }
843:
844: sub end_h5 {
845: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
846: my $currentstring = '';
847: if ($target eq 'web') {
848: $currentstring .= $token->[2];
849: } elsif ($target eq 'tex') {
850: my $post='\vskip 0 mm ';
851: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
852: if ($align eq 'center') {
853: $post='\end{center}';
854: } elsif ($align eq 'left') {
855: $post='} \hfill'.'\vskip 0 mm ';
856: } elsif ($align eq 'right') {
857: $post='}'.'\vskip 0 mm ';
858: }
859: $currentstring .= '}}'.$post;
860: }
861: return $currentstring;
862: }
863:
864: #-- <h6> tag
865: sub start_h6 {
866: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
867: my $currentstring = '';
868: if ($target eq 'web') {
869: $currentstring .= $token->[4];
870: } elsif ($target eq 'tex') {
871: my $pre;
872: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
873: if ($align eq 'center') {
874: $pre='\begin{center}';
875: } elsif ($align eq 'left') {
876: $pre='\rlap{';
877: } elsif ($align eq 'right') {
878: $pre=' \hfill \llap{';
879: }
880: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
881: if (not defined $TeXsize) {$TeXsize="large";}
882: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
883: }
884: return $currentstring;
885: }
886:
887: sub end_h6 {
888: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
889: my $currentstring = '';
890: if ($target eq 'web') {
891: $currentstring .= $token->[2];
892: } elsif ($target eq 'tex') {
893: my $post='\vskip 0 mm ';
894: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
895: if ($align eq 'center') {
896: $post='\end{center}';
897: } elsif ($align eq 'left') {
898: $post='} \hfill'.'\vskip 0 mm ';
899: } elsif ($align eq 'right') {
900: $post='}'.'\vskip 0 mm ';
901: }
902: $currentstring .= '}}'.$post;
903: }
904: return $currentstring;
905: }
906:
907: #--- <cite> tag (end tag required)
908: sub start_cite {
909: my ($target,$token) = @_;
910: my $currentstring = '';
911: if ($target eq 'web') {
912: $currentstring .= $token->[4];
913: } elsif ($target eq 'tex') {
914: $currentstring .= '\textit{';
915: }
916: return $currentstring;
917: }
918:
919: sub end_cite {
920: my ($target,$token) = @_;
921: my $currentstring = '';
922: if ($target eq 'web') {
923: $currentstring .= $token->[2];
924: } elsif ($target eq 'tex') {
925: $currentstring .= '}';
926: }
927: return $currentstring;
928: }
929:
930: #-- <i> tag (end tag required)
931: sub start_i {
932: my ($target,$token) = @_;
933: my $currentstring = '';
934: if ($target eq 'web') {
935: $currentstring .= $token->[4];
936: } elsif ($target eq 'tex') {
937: $currentstring .= '\textit{';
938: }
939: return $currentstring;
940: }
941:
942: sub end_i {
943: my ($target,$token) = @_;
944: my $currentstring = '';
945: if ($target eq 'web') {
946: $currentstring .= $token->[2];
947: } elsif ($target eq 'tex') {
948: $currentstring .= '}';
949: }
950: return $currentstring;
951: }
952:
953: #-- <address> tag (end tag required)
954: sub start_address {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web') {
958: $currentstring .= $token->[4];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '\textit{';
961: }
962: return $currentstring;
963: }
964:
965: sub end_address {
966: my ($target,$token) = @_;
967: my $currentstring = '';
968: if ($target eq 'web') {
969: $currentstring .= $token->[2];
970: } elsif ($target eq 'tex') {
971: $currentstring .= '}';
972: }
973: return $currentstring;
974: }
975:
976: #-- <dfn> tag (end tag required)
977: sub start_dfn {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web') {
981: $currentstring .= $token->[4];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '\textit{';
984: }
985: return $currentstring;
986: }
987:
988: sub end_dfn {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web') {
992: $currentstring .= $token->[2];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '}';
995: }
996: return $currentstring;
997: }
998:
999: #-- <tt> tag (end tag required)
1000: sub start_tt {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web') {
1004: $currentstring .= $token->[4];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '\texttt{';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: sub end_tt {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web') {
1015: $currentstring .= $token->[2];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '}';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: #-- <kbd> tag (end tag required)
1023: sub start_kbd {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web') {
1027: $currentstring .= $token->[4];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '\texttt{';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: sub end_kbd {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web') {
1038: $currentstring .= $token->[2];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '}';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: #-- <code> tag (end tag required)
1046: sub start_code {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web') {
1050: $currentstring .= $token->[4];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '\texttt{';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: sub end_code {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web') {
1061: $currentstring .= $token->[2];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '}';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: #-- <em> tag (end tag required)
1069: sub start_em {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web') {
1073: $currentstring .= $token->[4];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '\emph{';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: sub end_em {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web') {
1084: $currentstring .= $token->[2];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '}';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: #-- <q> tag (end tag required)
1092: sub start_q {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web') {
1096: $currentstring .= $token->[4];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '\emph{';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: sub end_q {
1104: my ($target,$token) = @_;
1105: my $currentstring = '';
1106: if ($target eq 'web') {
1107: $currentstring .= $token->[2];
1108: } elsif ($target eq 'tex') {
1109: $currentstring .= '}';
1110: }
1111: return $currentstring;
1112: }
1113:
1114: #-- <p> tag (end tag optional)
1115: #optional attribute - align="center|left|right"
1116: sub start_p {
1117: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1118: my $currentstring = '';
1119: if ($target eq 'web') {
1120: $currentstring .= $token->[4];
1121: } elsif ($target eq 'tex') {
1122: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1123: if ($align eq 'center') {
1124: $currentstring='\begin{center}\par';
1125: } elsif ($align eq 'right') {
1126: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1127: } elsif ($align eq 'left') {
1128: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1129: } else {
1130: $currentstring='\par ';
1131: }
1132: my $signal=1;#<p> does not work inside <b>...</b>
1133: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1134: if (!$signal) {$currentstring = '';}
1135: }
1136: }
1137: return $currentstring;
1138: }
1139:
1140: sub end_p {
1141: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1142: my $currentstring = '';
1143: if ($target eq 'web') {
1144: $currentstring .= $token->[2];
1145: } elsif ($target eq 'tex') {
1146: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1147: if (not defined $align) {
1148: $currentstring.='\strut\\\\\strut ';
1149: } elsif ($align eq 'center') {
1150: $currentstring .= '\end{center}';
1151: } elsif ($align eq 'right') {
1152: $currentstring .= '}}';
1153: } elsif ($align eq 'left') {
1154: $currentstring .= '}\hfill}';
1155: }
1156: }
1157: return $currentstring;
1158: }
1159:
1160: #-- <br> tag (end tag forbidden)
1161: sub start_br {
1162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1163: my $currentstring = '';
1164: if ($target eq 'web') {
1165: $currentstring .= $token->[4];
1166: } elsif ($target eq 'tex') {
1167: my @tempo=@$tagstack;
1168: my $signal=0;
1169: for (my $i=$#tempo;$i>=0;$i--) {
1170: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1171: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1172: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1173: $signal=1;
1174: last;
1175: }
1176: }
1177: if ($signal) {
1178: $currentstring .= ' \vskip 0 mm ';
1179: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1180: $currentstring .= '\strut \\\\ \strut ';
1181: }
1182: }
1183: return $currentstring;
1184: }
1185:
1186: sub end_br {
1187: my ($target,$token) = @_;
1188: my $currentstring = '';
1189: if ($target eq 'web') {
1190: $currentstring .= $token->[2];
1191: }
1192: return $currentstring;
1193: }
1194:
1195: #-- <big> tag (end tag required)
1196: sub start_big {
1197: my ($target,$token) = @_;
1198: my $currentstring = '';
1199: if ($target eq 'web') {
1200: $currentstring .= $token->[4];
1201: } elsif ($target eq 'tex') {
1202: $currentstring .= '{\large ';
1203: }
1204: return $currentstring;
1205: }
1206:
1207: sub end_big {
1208: my ($target,$token) = @_;
1209: my $currentstring = '';
1210: if ($target eq 'web') {
1211: $currentstring .= $token->[2];
1212: } elsif ($target eq 'tex') {
1213: $currentstring .= '}';
1214: }
1215: return $currentstring;
1216: }
1217:
1218: #-- <small> tag (end tag required)
1219: sub start_small {
1220: my ($target,$token) = @_;
1221: my $currentstring = '';
1222: if ($target eq 'web') {
1223: $currentstring .= $token->[4];
1224: } elsif ($target eq 'tex') {
1225: $currentstring .= '{\footnotesize ';
1226: }
1227: return $currentstring;
1228: }
1229:
1230: sub end_small {
1231: my ($target,$token) = @_;
1232: my $currentstring = '';
1233: if ($target eq 'web') {
1234: $currentstring .= $token->[2];
1235: } elsif ($target eq 'tex') {
1236: $currentstring .= '}';
1237: }
1238: return $currentstring;
1239: }
1240:
1241: #-- <basefont> tag (end tag forbidden)
1242: sub start_basefont {
1243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1244: my $currentstring = '';
1245: if ($target eq 'web') {
1246: $currentstring = $token->[4];
1247: } elsif ($target eq 'tex') {
1248: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1249: if (defined $basesize) {
1250: $currentstring = '{\\'.$basesize.' ';
1251: }
1252: }
1253: return $currentstring;
1254: }
1255:
1256: sub end_basefont {
1257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1258: my $currentstring = '';
1259: if ($target eq 'web') {
1260: $currentstring = $token->[4];
1261: } elsif ($target eq 'tex') {
1262: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1263: if (defined $basesize) {
1264: $currentstring = '}';
1265: }
1266: }
1267: return $currentstring;
1268: }
1269:
1270: #-- <font> tag (end tag required)
1271: sub start_font {
1272: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1273: my $currentstring = '';
1274: if ($target eq 'web') {
1275: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1276: if ($face!~/symbol/i) {
1277: if (($ENV{'browser.fontenhance'} eq 'on') ||
1278: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1279: }
1280: $currentstring = $token->[4];
1281: } elsif ($target eq 'tex') {
1282: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1283: if (defined $fontsize) {
1284: $currentstring = '{\\'.$fontsize.' ';
1285: }
1286: }
1287: return $currentstring;
1288: }
1289:
1290: sub end_font {
1291: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1292: my $currentstring = '';
1293: if ($target eq 'web') {
1294: $currentstring = $token->[2];
1295: } elsif ($target eq 'tex') {
1296: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1297: if (defined $fontsize) {
1298: $currentstring = '}';
1299: }
1300: }
1301: return $currentstring;
1302: }
1303:
1304: #-- <strike> tag (end tag required)
1305: sub start_strike {
1306: my ($target,$token) = @_;
1307: my $currentstring = '';
1308: if ($target eq 'web') {
1309: $currentstring .= $token->[4];
1310: } elsif ($target eq 'tex') {
1311: &Apache::lonxml::startredirection();
1312: }
1313: return $currentstring;
1314: }
1315:
1316: sub end_strike {
1317: my ($target,$token) = @_;
1318: my $currentstring = '';
1319: if ($target eq 'web') {
1320: $currentstring .= $token->[2];
1321: } elsif ($target eq 'tex') {
1322: $currentstring=&Apache::lonxml::endredirection();
1323: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1324: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1325: $currentstring=~s/(\S)\s*$/$1\}/;
1326: }
1327: return $currentstring;
1328: }
1329:
1330: #-- <s> tag (end tag required)
1331: sub start_s {
1332: my ($target,$token) = @_;
1333: my $currentstring = '';
1334: if ($target eq 'web') {
1335: $currentstring .= $token->[4];
1336: } elsif ($target eq 'tex') {
1337: &Apache::lonxml::startredirection();
1338: }
1339: return $currentstring;
1340: }
1341:
1342: sub end_s {
1343: my ($target,$token) = @_;
1344: my $currentstring = '';
1345: if ($target eq 'web') {
1346: $currentstring .= $token->[2];
1347: } elsif ($target eq 'tex') {
1348: $currentstring=&Apache::lonxml::endredirection();
1349: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1350: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1351: $currentstring=~s/(\S)\s*$/$1\}/;
1352: }
1353: return $currentstring;
1354: }
1355:
1356: #-- <sub> tag (end tag required)
1357: sub start_sub {
1358: my ($target,$token) = @_;
1359: my $currentstring = '';
1360: if ($target eq 'web') {
1361: $currentstring .= $token->[4];
1362: } elsif ($target eq 'tex') {
1363: $currentstring .= '\ensuremath{_{';
1364: }
1365: return $currentstring;
1366: }
1367:
1368: sub end_sub {
1369: my ($target,$token) = @_;
1370: my $currentstring = '';
1371: if ($target eq 'web') {
1372: $currentstring .= $token->[2];
1373: } elsif ($target eq 'tex') {
1374: $currentstring .= '}}';
1375: }
1376: return $currentstring;
1377: }
1378:
1379: #-- <sup> tag (end tag required)
1380: sub start_sup {
1381: my ($target,$token) = @_;
1382: my $currentstring = '';
1383: if ($target eq 'web') {
1384: $currentstring .= $token->[4];
1385: } elsif ($target eq 'tex') {
1386: $currentstring .= '\ensuremath{^{';
1387: }
1388: return $currentstring;
1389: }
1390:
1391: sub end_sup {
1392: my ($target,$token) = @_;
1393: my $currentstring = '';
1394: if ($target eq 'web') {
1395: $currentstring .= $token->[2];
1396: } elsif ($target eq 'tex') {
1397: $currentstring .= '}}';
1398: }
1399: return $currentstring;
1400: }
1401:
1402: #-- <hr> tag (end tag forbidden)
1403: sub start_hr {
1404: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web') {
1407: $currentstring .= $token->[4];
1408: } elsif ($target eq 'tex') {
1409: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1410: if (defined $LaTeXwidth) {
1411: if ($LaTeXwidth=~/^%/) {
1412: substr($LaTeXwidth,0,1)='';
1413: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1414: }
1415: } else {
1416: $LaTeXwidth ='0.9\textwidth';
1417: }
1418: my ($pre,$post);
1419: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1420: if (($align eq 'center') || (not defined $align)) {
1421: $pre=''; $post='';
1422: } elsif ($align eq 'left') {
1423: $pre='\rlap{'; $post='} \hfill';
1424: } elsif ($align eq 'right') {
1425: $pre=' \hfill \llap{'; $post='}';
1426: }
1427: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1428: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1429: }
1430: return $currentstring;
1431: }
1432:
1433: sub end_hr {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web') {
1437: $currentstring .= $token->[2];
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <div> tag (end tag required)
1443: sub start_div {
1444: my ($target,$token) = @_;
1445: my $currentstring = '';
1446: if ($target eq 'web') {
1447: $currentstring .= $token->[4];
1448: }
1449: return $currentstring;
1450: }
1451:
1452: sub end_div {
1453: my ($target,$token) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web') {
1456: $currentstring .= $token->[2];
1457: }
1458: return $currentstring;
1459: }
1460:
1461: #-- <a> tag (end tag required)
1462: sub start_a {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web') {
1466: $currentstring .= $token->[4];
1467: } elsif ($target eq 'tex') {
1468: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1469: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1470: if ($a=~/\S/) {
1471: $a=~s/([^\\])%/$1\\\%/g;
1472: $currentstring .= '\ref{URI: '.$a.'}';
1473: } elsif ($b=~/\S/) {
1474: $currentstring .= '\ref{Anchor: '.$b.'}';
1475: } else {
1476: $currentstring.='';
1477: }
1478: }
1479: return $currentstring;
1480: }
1481:
1482: sub end_a {
1483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web') {
1486: $currentstring .= $token->[2];
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <li> tag (end tag optional)
1492: sub start_li {
1493: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web') {
1496: $currentstring = $token->[4];
1497: } elsif ($target eq 'tex') {
1498: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1499: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1500: #FIXME need to support types i and I
1501: if ($type=~/disc/) {
1502: $currentstring .= ' \item[$\bullet$] ';
1503: } elsif ($type=~/circle/) {
1504: $currentstring .= ' \item[$\circ$] ';
1505: } elsif ($type=~/square/) {
1506: $currentstring .= ' \item[$\diamond$] ';
1507: } elsif ($type eq '1') {
1508: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1509: } elsif ($type eq 'A') {
1510: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1511: } elsif ($type eq 'a') {
1512: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1513: } elsif ($value ne '') {
1514: $currentstring .= ' \item['.$value.'] ';
1515: } else {
1516: $currentstring .= ' \item ';
1517: }
1518: $Apache::londefdef::list_index++;
1519: }
1520: return $currentstring;
1521: }
1522:
1523: sub end_li {
1524: my ($target,$token) = @_;
1525: my $currentstring = '';
1526: if ($target eq 'web') {
1527: $currentstring = $token->[2];
1528: }
1529: return $currentstring;
1530: }
1531:
1532: #-- <u> tag (end tag required)
1533: sub start_u {
1534: my ($target,$token) = @_;
1535: my $currentstring = '';
1536: if ($target eq 'web') {
1537: $currentstring .= $token->[4];
1538: } elsif ($target eq 'tex') {
1539: &Apache::lonxml::startredirection();
1540: }
1541: return $currentstring;
1542: }
1543:
1544: sub end_u {
1545: my ($target,$token) = @_;
1546: my $currentstring = '';
1547: if ($target eq 'web') {
1548: $currentstring .= $token->[2];
1549: } elsif ($target eq 'tex') {
1550: $currentstring=&Apache::lonxml::endredirection();
1551: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1552: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1553: $currentstring=~s/(\S)\s*$/$1\}/;
1554: }
1555: return $currentstring;
1556: }
1557:
1558: #-- <ul> tag (end tag required)
1559: sub start_ul {
1560: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1561: my $currentstring = '';
1562: if ($target eq 'web') {
1563: $currentstring = $token->[4];
1564: } elsif ($target eq 'tex') {
1565: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1566: $Apache::londefdef::list_index=0;
1567: if ($TeXtype eq 'disc') {
1568: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1569: '\renewcommand{\labelitemii}{$\bullet$}'.
1570: '\renewcommand{\labelitemiii}{$\bullet$}'.
1571: '\renewcommand{\labelitemiv}{$\bullet$}';
1572: } elsif ($TeXtype eq 'circle') {
1573: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1574: '\renewcommand{\labelitemii}{$\circ$}'.
1575: '\renewcommand{\labelitemiii}{$\circ$}'.
1576: '\renewcommand{\labelitemiv}{$\circ$}';
1577: } elsif ($TeXtype eq 'square') {
1578: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1579: '\renewcommand{\labelitemii}{$\diamond$}'.
1580: '\renewcommand{\labelitemiii}{$\diamond$}'.
1581: '\renewcommand{\labelitemiv}{$\diamond$}';
1582: }
1583: $currentstring .= '\strut \begin{itemize}';
1584: }
1585: return $currentstring;
1586: }
1587:
1588: sub end_ul {
1589: my ($target,$token) = @_;
1590: my $currentstring = '';
1591: if ($target eq 'web') {
1592: $currentstring = $token->[2];
1593: } elsif ($target eq 'tex') {
1594: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1595: '\renewcommand{\labelitemii}{$\bullet$}'.
1596: '\renewcommand{\labelitemiii}{$\bullet$}'.
1597: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1598: }
1599: return $currentstring;
1600: }
1601:
1602: #-- <menu> tag (end tag required)
1603: sub start_menu {
1604: my ($target,$token) = @_;
1605: my $currentstring = '';
1606: if ($target eq 'web') {
1607: $currentstring = $token->[4];
1608: } elsif ($target eq 'tex') {
1609: $currentstring = " \\begin{itemize} ";
1610: }
1611: return $currentstring;
1612: }
1613:
1614: sub end_menu {
1615: my ($target,$token) = @_;
1616: my $currentstring = '';
1617: if ($target eq 'web') {
1618: $currentstring = $token->[2];
1619: } elsif ($target eq 'tex') {
1620: $currentstring = " \\end{itemize}";
1621: }
1622: return $currentstring;
1623: }
1624:
1625: #-- <dir> tag (end tag required)
1626: sub start_dir {
1627: my ($target,$token) = @_;
1628: my $currentstring = '';
1629: if ($target eq 'web') {
1630: $currentstring = $token->[4];
1631: } elsif ($target eq 'tex') {
1632: $currentstring = " \\begin{itemize} ";
1633: }
1634: return $currentstring;
1635: }
1636:
1637: sub end_dir {
1638: my ($target,$token) = @_;
1639: my $currentstring = '';
1640: if ($target eq 'web') {
1641: $currentstring = $token->[2];
1642: } elsif ($target eq 'tex') {
1643: $currentstring = " \\end{itemize}";
1644: }
1645: return $currentstring;
1646: }
1647:
1648: #-- <ol> tag (end tag required)
1649: sub start_ol {
1650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1651: my $currentstring = '';
1652: if ($target eq 'web') {
1653: $currentstring = $token->[4];
1654: } elsif ($target eq 'tex') {
1655: $Apache::londefdef::list_index=0;
1656: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1657: if ($type eq '1') {
1658: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1659: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1660: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1661: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1662: } elsif ($type eq 'A') {
1663: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1664: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1665: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1666: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1667: } elsif ($type eq 'a') {
1668: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1669: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1670: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1671: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1672: } elsif ($type eq 'i') {
1673: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1674: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1675: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1676: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1677: } elsif ($type eq 'I') {
1678: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1679: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1680: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1681: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1682: }
1683: $currentstring .= '\strut \begin{enumerate}';
1684: }
1685: return $currentstring;
1686: }
1687:
1688: sub end_ol {
1689: my ($target,$token) = @_;
1690: my $currentstring = '';
1691: if ($target eq 'web') {
1692: $currentstring = $token->[2];
1693: } elsif ($target eq 'tex') {
1694: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1695: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1696: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1697: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1698: }
1699: return $currentstring;
1700: }
1701:
1702: #-- <dl> tag (end tag required)
1703: sub start_dl {
1704: my ($target,$token) = @_;
1705: my $currentstring = '';
1706: if ($target eq 'web') {
1707: $currentstring = $token->[4];
1708: } elsif ($target eq 'tex') {
1709: $currentstring = '\begin{description}';
1710: $Apache::londefdef::DL++;
1711: push(@Apache::londefdef::description,[]);
1712: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1713: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1714: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1715: }
1716: return $currentstring;
1717: }
1718:
1719: sub end_dl {
1720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web') {
1723: $currentstring = $token->[2];
1724: } elsif ($target eq 'tex') {
1725: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1726: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1727: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1728: $currentstring.=' '.$element.' ';
1729: }
1730: pop(@Apache::londefdef::description);
1731: $currentstring.='\end{description}';
1732: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1733: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1734: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1735: $Apache::londefdef::DL--;
1736: }
1737: return $currentstring;
1738: }
1739:
1740: #-- <dt> tag (end tag optional)
1741: sub start_dt {
1742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1743: my $currentstring='';
1744: if ($target eq 'web') {
1745: $currentstring = $token->[4];
1746: } elsif ($target eq 'tex') {
1747: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1748: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1749: &Apache::lonxml::startredirection();
1750: $Apache::londefdef::DT[-1]++;
1751: $Apache::londefdef::seenDT[-1]=1;
1752: }
1753: return $currentstring;
1754: }
1755:
1756: sub end_dt {
1757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1758: my $currentstring = '';
1759: if ($target eq 'web') {
1760: $currentstring = $token->[2];
1761: } elsif ($target eq 'tex') {
1762: if ($Apache::londefdef::DT[-1]) {
1763: my $data=&item_cleanup();
1764: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1765: $Apache::londefdef::DT[-1]--;
1766: }
1767: }
1768: return $currentstring;
1769: }
1770:
1771: sub item_cleanup {
1772: my $item=&Apache::lonxml::endredirection();
1773: $item=~s/\\begin{center}//g;
1774: $item=~s/\\end{center}//g;
1775: return $item;
1776: }
1777:
1778: #-- <dd> tag (end tag optional)
1779: sub start_dd {
1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1781: my $currentstring = '';
1782: if ($target eq 'web') {
1783: $currentstring = $token->[4];
1784: } elsif ($target eq 'tex') {
1785: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1786: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1787: if (!$Apache::londefdef::seenDT[-1]) {
1788: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1789: }
1790: push(@{$Apache::londefdef::description[-1]},'');
1791: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1792: $Apache::londefdef::DD[-1]++;
1793: &Apache::lonxml::startredirection();
1794: }
1795: return $currentstring;
1796: }
1797:
1798: sub end_dd {
1799: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1800: my $currentstring = '';
1801: if ($target eq 'web') {
1802: $currentstring = $token->[2];
1803: } elsif ($target eq 'tex') {
1804: $Apache::londefdef::description[-1]->[-1].=
1805: &Apache::lonxml::endredirection().' \vskip 0mm ';
1806: $Apache::londefdef::DD[-1]--;
1807: }
1808: return $currentstring;
1809: }
1810:
1811: #-- <table> tag (end tag required)
1812: #list of supported attributes: border,width,TeXwidth
1813: sub start_table {
1814: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1815: my ($textwidth,$currentstring)=('','');
1816: if ($target eq 'web') {
1817: $currentstring = $token->[4];
1818: } elsif ($target eq 'tex') {
1819: my $aa = {};
1820: push @Apache::londefdef::table, $aa;
1821: $Apache::londefdef::table[-1]{'row_number'} = -1;
1822: #maximum table's width (default coincides with text line length)
1823: if ($#Apache::londefdef::table==0) {
1824: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1825: $textwidth=~/(\d+\.?\d*)/;
1826: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1827: } else {
1828: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1829: #the maximum width of nested table is determined by LATeX width of parent cell
1830: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1831: } else {
1832: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1833: $textwidth=$Apache::londefdef::table[-2]{'width'};
1834: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1835: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1836: }
1837: }
1838: }
1839: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1840: if (not defined $TeXwidth) {
1841: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1842: if ($htmlwidth=~/%/) {
1843: $Apache::londefdef::table[-1]{'percent'}=1;
1844: $htmlwidth=~/(\d+)/;
1845: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1846: } else {
1847: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1848: }
1849: } elsif ($TeXwidth=~/%/) {
1850: $Apache::londefdef::table[-1]{'percent'}=1;
1851: $TeXwidth=~/(\d+)/;
1852: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1853: } else {
1854: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1855: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1856: }
1857: #table's border
1858: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1859: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1860: unless (defined $border) { $border = 0; }
1861: if ($border) {
1862: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1863: $Apache::londefdef::table[-1]{'vinc'} = '&';
1864: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1865: } else {
1866: $Apache::londefdef::table[-1]{'hinc'} = '';
1867: $Apache::londefdef::table[-1]{'vinc'} = '&';
1868: $Apache::londefdef::table[-1]{'vvinc'} = '';
1869: }
1870: if ($#Apache::londefdef::table==0) {
1871: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1872: }
1873: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1874: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1875: $Apache::londefdef::table[-1]{'objectlen'}=[];
1876: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1877: $Apache::londefdef::table[-1]{'maxlen'}=[];
1878: $Apache::londefdef::table[-1]{'minlen'}=[];
1879: $Apache::londefdef::table[-1]{'content'}=[];
1880: $Apache::londefdef::table[-1]{'align'}=[];
1881: $currentstring='\keephidden{NEW TABLE ENTRY}';
1882: }
1883: return $currentstring;
1884: }
1885:
1886: sub end_table {
1887: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1888: my $currentstring = '';
1889: if ($target eq 'web') {
1890: $currentstring = $token->[2];
1891: } elsif ($target eq 'tex') {
1892: my $inmemory = '';
1893: my $output = '';
1894: my $WARNING='';
1895: #width of columns from TeXwidth attributes
1896: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1897: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1898: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1899: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1900: }
1901: }
1902: }
1903: #free space and number of empty columns
1904: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1905: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1906: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1907: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1908: $empty_columns++;
1909: } else {
1910: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1911: }
1912: }
1913: #boundaries for contents columns
1914: my @min_len=();#columns can not be narrower
1915: my @max_len=();#maximum length of column
1916: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1917: my ($localmin,$localmax)=(0,0);
1918: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1919: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1920: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1921: }
1922: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1923: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1924: }
1925: }
1926: push @min_len, $localmin;
1927: push @max_len, $localmax;
1928: }
1929: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1930: my $localmin=0,;
1931: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1932: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1933: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1934: }
1935: }
1936: if ($max_len[$jn]<$localmin) {
1937: $max_len[$jn]=$localmin;
1938: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1939: }#object size is bigger
1940: if ($min_len[$jn]<$localmin) {
1941: $min_len[$jn]=$localmin;
1942: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1943: }#object size is bigger
1944: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1945: $min_len[$jn]=0;
1946: $max_len[$jn]=0;
1947: }
1948: }
1949: #final adjustment of column width
1950: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1951: my @adjust=();
1952: #step 1. adjustment by maximum value
1953: my $space_neeeded=0;
1954: for (my $jn=0;$jn<=$#max_len;$jn++) {
1955: $space_neeeded=$space_neeeded+$max_len[$jn];
1956: }
1957: if ($space_neeeded<=$available_space) {
1958: for (my $jn=0;$jn<=$#max_len;$jn++) {
1959: if ($fwidth[$jn]==0) {
1960: $fwidth[$jn]=$max_len[$jn];
1961: }
1962: }
1963: } else {
1964: #step 2. adjustment by minimum value (estimation)
1965: $space_neeeded=0;
1966: for (my $jn=0;$jn<=$#min_len;$jn++) {
1967: $space_neeeded+=$min_len[$jn];
1968: }
1969: if ($space_neeeded>$available_space) {
1970: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1971: for (my $jn=0;$jn<=$#max_len;$jn++) {
1972: if ($fwidth[$jn]==0) {
1973: $fwidth[$jn]=$min_len[$jn];
1974: }
1975: }
1976: #check if we have objects which can be scaled
1977: my $how_many_to_scale=0;
1978: my @to_scale=();
1979: for (my $jn=0;$jn<=$#max_len;$jn++) {
1980: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1981: $how_many_to_scale++;
1982: push @to_scale, $jn;
1983: }
1984: }
1985: if ($how_many_to_scale>0) {
1986: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1987: foreach my $jn (@to_scale) {
1988: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1989: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1990: if ($1 ne '') {
1991: my $current_length=&recalc($1);
1992: $current_length=~/(\d+\.?\d*)/;
1993: $current_length=$current_length-$space_to_adjust;
1994: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
1995: }
1996: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
1997: if ($1 ne '') {
1998: my $current_length=$1;
1999: $current_length=$current_length-$space_to_adjust;
2000: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2001: }
2002: }
2003: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2004: }
2005: }
2006: } else {
2007: #step 3. adjustment over minimal + corrections
2008: my $enlarge_coef=$available_space/$space_neeeded;
2009: my $acsessive=0;
2010: for (my $jn=0;$jn<=$#min_len;$jn++) {
2011: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2012: if ($adjust[$jn]>$max_len[$jn]) {
2013: $fwidth[$jn]=$max_len[$jn];
2014: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2015: $adjust[$jn]=0;
2016: }
2017: }
2018: if ($acsessive>0) {
2019: #we have an excess of space and can redistribute it
2020: my $notempty_columns=0;
2021: for (my $jn=0;$jn<=$#min_len;$jn++) {
2022: if ($adjust[$jn]!=0) {
2023: $notempty_columns++;
2024: }
2025: }
2026: my $per_column=$acsessive/$notempty_columns;
2027: for (my $jn=0;$jn<=$#min_len;$jn++) {
2028: if ($adjust[$jn]!=0) {
2029: $adjust[$jn]+=$per_column;
2030: $fwidth[$jn]=$adjust[$jn];
2031: }
2032: }
2033: } else {
2034: for (my $jn=0;$jn<=$#min_len;$jn++) {
2035: $fwidth[$jn]=$adjust[$jn];
2036: }
2037: }
2038: }
2039: }
2040: #use all available width if it is defined in % or as TeXwidth
2041: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2042: my $current=0;
2043: for (my $i=0;$i<=$#fwidth;$i++) {
2044: $current+=$fwidth[$i];
2045: }
2046: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2047: for (my $i=0;$i<=$#fwidth;$i++) {
2048: $fwidth[$i]*=$coef;
2049: }
2050: }
2051: #removing of empty columns if allowed
2052: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2053: if ($permission eq 'yes') {
2054: my @cleaned_table=();
2055: my @cleaned_header=();
2056: my $colind=0;
2057: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2058: if ($fwidth[$jn]!=0) {
2059: #we need to copy column
2060: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2061: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2062: $cleaned_header[$colind]=$fwidth[$jn];
2063: }
2064: $colind++;
2065: }
2066: }
2067: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2068: @fwidth=@cleaned_header;
2069: }
2070: #construct header of the table
2071: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2072: for (my $in=0;$in<=$#fwidth;$in++) {
2073: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2074: }
2075: $header_of_table .= '}';
2076: #fill the table
2077: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2078: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2079: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2080: $output.='\vspace*{-6 mm}\begin{center}';
2081: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2082: $output.=' \hfill \llap{'
2083: }
2084: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2085: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2086: $output.='\end{center}\vspace*{-6 mm}';
2087: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2088: $output.='} ';
2089: }
2090: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2091: }
2092: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2093: }
2094: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2095: if ($#Apache::londefdef::table > 0) {
2096: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2097: pop @Apache::londefdef::table;
2098: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2099: } else {
2100: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2101: pop @Apache::londefdef::table;
2102: undef @Apache::londefdef::table;
2103: }
2104: }
2105: return $currentstring;
2106: }
2107:
2108: #-- <tr> tag (end tag optional)
2109: sub start_tr {
2110: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2111: my $currentstring = '';
2112: if ($target eq 'web') {
2113: $currentstring = $token->[4];
2114: } elsif ($target eq 'tex') {
2115: $Apache::londefdef::table[-1]{'row_number'}++;
2116: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2117: if ($alignchar ne '') {
2118: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2119: } else {
2120: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2121: }
2122: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2123: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2124: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2125: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2126: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2127: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2128: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2129: }
2130: return $currentstring;
2131: }
2132:
2133: sub end_tr {
2134: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2135: my $currentstring = '';
2136: if ($target eq 'web') {
2137: $currentstring = $token->[2];
2138: } elsif ($target eq 'tex') {
2139: if ($Apache::londefdef::TD_redirection) {
2140: &end_td_tex($parstack,$parser,$safeeval);
2141: }
2142: }
2143: return $currentstring;
2144: }
2145:
2146: #-- <td> tag (end tag optional)
2147: sub start_td {
2148: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2149: my $currentstring = '';
2150: if ($target eq 'web') {
2151: $currentstring = $token->[4];
2152: } elsif ($target eq 'tex') {
2153: $Apache::londefdef::TD_redirection = 1;
2154: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2155: }
2156: return $currentstring;
2157: }
2158:
2159: sub tag_check {
2160: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2161: my @ar=@$parstack;
2162: for (my $i=$#ar-1;$i>=0;$i--) {
2163: if (lc($$tagstack[$i]) eq $good_tag) {
2164: &start_td_tex($parstack,$parser,$safeeval);
2165: last;
2166: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2167: splice @ar, $i+1;
2168: &end_td_tex(\@ar,$parser,$safeeval);
2169: &start_td_tex($parstack,$parser,$safeeval);
2170: last;
2171: }
2172: }
2173: return '';
2174: }
2175:
2176: sub start_td_tex {
2177: my ($parstack,$parser,$safeeval) = @_;
2178: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2179: if ($alignchar eq '') {
2180: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2181: }
2182: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2183: $Apache::londefdef::table[-1]{'counter_columns'}++;
2184: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2185: if (defined $TeXwidth) {
2186: my $current_length=&recalc($TeXwidth);
2187: $current_length=~/(\d+\.?\d*)/;
2188: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2189: }
2190: &Apache::lonxml::startredirection();
2191: return '';
2192: }
2193:
2194: sub end_td_tex {
2195: my ($parstack,$parser,$safeeval) = @_;
2196: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2197: my $data=&Apache::lonxml::endredirection();
2198: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2199: if (defined $TeXwidth) {
2200: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2201: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2202: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2203: } else {
2204: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2205: my $garbage_data=$data;
2206: my $fwidth=0;
2207: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2208: my $current_length=&recalc($1);
2209: $current_length=~/(\d+\.?\d*)/;
2210: if ($fwidth<$1) {$fwidth=$1;}
2211: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2212: }
2213: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2214: my $current_length=$1;
2215: if ($fwidth<$current_length) {$fwidth=$current_length;}
2216: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2217: }
2218: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2219: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2220: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2221: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2222: } elsif ($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)*/) {
2223: my $garbage_data=$data;
2224: my $fwidth=0;
2225: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2226: my $current_length=&recalc($1);
2227: $current_length=~/(\d+\.?\d*)/;
2228: if ($fwidth<$1) {$fwidth=$1;}
2229: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2230: }
2231: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2232: my $current_length=&recalc($1);
2233: $current_length=~/(\d+\.?\d*)/;
2234: if ($fwidth<$1) {$fwidth=$1;}
2235: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2236: }
2237: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2238: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2239: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2240: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2241: $data=~s/\\\\\s*$//;
2242: } else {
2243: $data=~s/^\s+(\S.*)/$1/;
2244: $data=~s/(.*\S)\s+$/$1/;
2245: $data=~s/(\s)+/$1/;
2246: my ($current_length,$min_length)=(0,0);
2247: if ($data=~/\\vskip/) {
2248: my $newdata=$data;
2249: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2250: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2251: foreach my $elementdata (@newdata) {
2252: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2253: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2254: my @words=split(/ /,$elementdata);
2255: foreach my $word (@words) {
2256: my $lengthword=2.5*&LATEX_length($word);
2257: if ($min_length<$lengthword) {$min_length=$lengthword;}
2258: }
2259: }
2260: } else {
2261: $current_length=2.5*&LATEX_length($data);
2262: my @words=split(/ /,$data);
2263: foreach my $word (@words) {
2264: my $lengthword=2*&LATEX_length($word);
2265: if ($min_length<$lengthword) {$min_length=$lengthword;}
2266: }
2267: }
2268: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2269: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2270: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2271: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2272: }
2273: }
2274: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2275: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2276: }
2277: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2278: return'';
2279: }
2280:
2281: sub end_td {
2282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2283: my $currentstring = '';
2284: if ($target eq 'web') {
2285: $currentstring = $token->[2];
2286: } elsif ($target eq 'tex') {
2287: $Apache::londefdef::TD_redirection =0;
2288: &end_td_tex($parstack,$parser,$safeeval);
2289: }
2290: return $currentstring;
2291: }
2292:
2293: #-- <th> tag (end tag optional)
2294: sub start_th {
2295: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2296: my $currentstring = '';
2297: if ($target eq 'web') {
2298: $currentstring = $token->[4];
2299: } elsif ($target eq 'tex') {
2300: $Apache::londefdef::TD_redirection = 1;
2301: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2302: }
2303: return $currentstring;
2304: }
2305:
2306: sub tagg_check {
2307: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2308: my @ar=@$parstack;
2309: for (my $i=$#ar-1;$i>=0;$i--) {
2310: if (lc($$tagstack[$i]) eq $good_tag) {
2311: &start_th_tex($parstack,$parser,$safeeval);
2312: last;
2313: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2314: splice @ar, $i+1;
2315: &end_th_tex(\@ar,$parser,$safeeval);
2316: &start_th_tex($parstack,$parser,$safeeval);
2317: last;
2318: }
2319: }
2320: return '';
2321: }
2322:
2323: sub start_th_tex {
2324: my ($parstack,$parser,$safeeval) = @_;
2325: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2326: if ($alignchar eq '') {
2327: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2328: }
2329: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2330: $Apache::londefdef::table[-1]{'counter_columns'}++;
2331: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2332: if (defined $TeXwidth) {
2333: my $current_length=&recalc($TeXwidth);
2334: $current_length=~/(\d+\.?\d*)/;
2335: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2336: }
2337: &Apache::lonxml::startredirection();
2338: return '';
2339: }
2340:
2341: sub end_th_tex {
2342: my ($parstack,$parser,$safeeval) = @_;
2343: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2344: my $data=&Apache::lonxml::endredirection();
2345: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2346: if (defined $TeXwidth) {
2347: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2348: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2349: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2350: } else {
2351: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2352: my $garbage_data=$data;
2353: my $fwidth=0;
2354: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2355: my $current_length=&recalc($1);
2356: $current_length=~/(\d+\.?\d*)/;
2357: if ($fwidth<$1) {$fwidth=$1;}
2358: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2359: }
2360: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2361: my $current_length=$1;
2362: if ($fwidth<$current_length) {$fwidth=$current_length;}
2363: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2364: }
2365: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2366: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2367: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2368: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2369: } else {
2370: $data=~s/^\s+(\S.*)/$1/;
2371: $data=~s/(.*\S)\s+$/$1/;
2372: $data=~s/(\s)+/$1/;
2373: my ($current_length,$min_length)=(0,0);
2374: if ($data=~/\\vskip/) {
2375: my $newdata=$data;
2376: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2377: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2378: foreach my $elementdata (@newdata) {
2379: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2380: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2381: my @words=split(/ /,$elementdata);
2382: foreach my $word (@words) {
2383: my $lengthword=2.5*&LATEX_length($word);
2384: if ($min_length<$lengthword) {$min_length=$lengthword;}
2385: }
2386: }
2387: } else {
2388: $current_length=2.5*&LATEX_length($data);
2389: my @words=split(/ /,$data);
2390: foreach my $word (@words) {
2391: my $lengthword=2*&LATEX_length($word);
2392: if ($min_length<$lengthword) {$min_length=$lengthword;}
2393: }
2394: }
2395: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2396: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2397: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2398: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2399: }
2400: }
2401: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2402: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2403: }
2404: #make data bold
2405: $data='\textbf{'.$data.'}';
2406: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2407: return'';
2408: }
2409:
2410: sub end_th {
2411: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2412: my $currentstring = '';
2413: if ($target eq 'web') {
2414: $currentstring = $token->[2];
2415: } elsif ($target eq 'tex') {
2416: $Apache::londefdef::TD_redirection =0;
2417: &end_th_tex($parstack,$parser,$safeeval);
2418: }
2419: return $currentstring;
2420: }
2421:
2422: #-- <img> tag (end tag forbidden)
2423: #
2424: # Render the <IMG> tag.
2425: # <IMG> has the following attributes (in addition to the
2426: # standard HTML ones:
2427: # TeXwrap - Governs how the tex target will try to wrap text around
2428: # horizontally aligned images.
2429: # TeXwidth - The width of the image when rendered for print (mm).
2430: # TeXheight - The height of the image when rendered for print (mm)
2431: # (Note there seems to also be support for this as a % of page size)
2432: #
2433: sub start_img {
2434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2435: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2436: undef,1);
2437: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2438: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2439: return '';
2440: }
2441: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2442: my $currentstring = '';
2443: my $scaling = .3;
2444:
2445: # Render unto browsers that which are the browser's...
2446:
2447: if ($target eq 'web') {
2448: if ($ENV{'browser.imagesuppress'} ne 'on') {
2449: $currentstring.= $token->[4];
2450: } else {
2451: my $alttag= &Apache::lonxml::get_param
2452: ('alt',$parstack,$safeeval,undef,1);
2453: unless ($alttag) {
2454: $alttag=&Apache::lonmeta::alttag
2455: ($Apache::lonxml::pwd[-1],$src);
2456: }
2457: $currentstring.='[IMAGE: '.$alttag.']';
2458: }
2459:
2460: # and render unto TeX that which is LaTeX
2461:
2462: } elsif ($target eq 'tex') {
2463: #
2464: # The alignment will require some superstructure to be put around
2465: # the \includegraphics stuff. At present we can only partially
2466: # simulate the alignments offered by html.
2467: #
2468: #
2469: my $align = lc(&Apache::lonxml::get_param('align',
2470: $parstack,
2471: $safeeval,
2472: undef,1));
2473: if(!$align) {
2474: $align = "bottom"; # This is html's default so it's ours too.
2475: }
2476: #
2477: &Apache::lonxml::debug("Alignemnt = $align");
2478: # LaTeX's image/text wrapping is really bad since it wants to
2479: # make figures float.
2480: # The user has the optional parameter (applicable only to l/r
2481: # alignment to use the picins/parpic directive to get wrapped text
2482: # this is also imperfect.. that's why we give them a choice...
2483: # so they can't yell at us for our choice.
2484: #
2485: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2486: $parstack,
2487: $safeeval,
2488: undef,0);
2489: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2490: if(!$latex_rendering) {
2491: $latex_rendering = "parbox";
2492: }
2493: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2494:
2495: my $oldSRC=$src;
2496: $oldSRC=~s/\.(gif|jpg|png)$/\.eps/;
2497: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2498: #if original gif/jpg/png file exist do following:
2499: if (-e $src) {
2500: #what is the image size?
2501: my $width_param=&image_width($src,$scaling,$parstack,$safeeval);
2502: my $height_param=&image_height($src,$scaling,$parstack,$safeeval);
2503: my ($file,$path)=&file_path($src);
2504: my $newsrc = $src;
2505: $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
2506: &Apache::lonnet::repcopy($oldSRC);
2507: $file=~s/\.(gif|jpg|png)$/.eps/i;
2508: #where can we find the picture?
2509: if (-e $newsrc) {
2510: #eps counterpart for image exist
2511: if ($path) {
2512: $currentstring .= '\graphicspath{{'.$path.'}}'
2513: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$file.'} ';
2514: }
2515: } else {
2516: #there is no eps counterpart for image - check for ps one
2517: $newsrc =~ s/\.eps$/\.ps/;
2518: if (-e $newsrc) {
2519: #ps counterpart for image exist
2520: $file =~ s/\.eps$/\.ps/;
2521: if ($path) {
2522: $currentstring .= '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
2523: }
2524: } else {
2525: #care about eps dynamical generation
2526: $currentstring.=&eps_generation($src,$file,$width_param);
2527: }
2528: }
2529: # If there's an alignment specification we need to honor it here.
2530: # For the horizontal alignments, we will also honor the
2531: # value of the latex specfication. The default is parbox,
2532: # and that's used for illegal values too.
2533: #
2534: # Even though we set a default alignment value, the user
2535: # could have given us an illegal value. In that case we
2536: # just use the default alignment of bottom..
2537: if ($align eq "top") {
2538: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2539: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2540: my $offset = $height_param/2;
2541: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2542: } elsif ($align eq "left") {
2543: if ($latex_rendering eq "parpic") {
2544: $currentstring = '\parpic[l]{'.$currentstring.'}';
2545: } else { # parbox rendering
2546: $currentstring = '\newline'."\n".'\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2547: }
2548: } elsif ($align eq "right") {
2549: if ($latex_rendering eq "parpic") {
2550: $currentstring = '\parpic[r]{'.$currentstring.'}';
2551: } else { # parbox rendering.
2552: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2553: .$currentstring.'\end{flushright}} \newline'."\n";
2554: }
2555: } else { # Bottom is also default.
2556: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2557: }
2558: } else {
2559: #original image file doesn't exist so check the alt attribute
2560: my $alt =
2561: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2562: unless ($alt) {
2563: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2564: }
2565:
2566: if ($alt) {
2567: $currentstring .= ' '.$alt.' ';
2568: } else {
2569: #<allow> tag will care about replication
2570: }
2571: }
2572:
2573: # And here's where the semi-quote breaks down: allow the user
2574: # to edit the beast as well by rendering the problem for edit:
2575:
2576:
2577: } elsif ($target eq 'edit') {
2578: $currentstring .=&Apache::edit::tag_start($target,$token);
2579: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2580: &Apache::edit::browse('src',undef,'alt').' '.
2581: &Apache::edit::search('src',undef,'alt').'<br />';
2582: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2583: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2584: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2585: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2586: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2587: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2588: ['','bottom','middle','top','left','right'],$token,5);
2589: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2590: ['', 'parbox', 'parpic'], $token, 2);
2591: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2592: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2593: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2594: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2595: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2596:
2597:
2598: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2599: if ($width) { $currentstring.=' width="'.$width.'" '; }
2600: if ($height) { $currentstring.=' height="'.$height.'" '; }
2601: $currentstring .= ' />';
2602: } elsif ($target eq 'modified') {
2603: my ($osrc,$owidth,$oheight)=
2604: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2605: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2606: $safeeval,'src','alt','align',
2607: 'TeXwidth','TeXheight', 'TeXwrap',
2608: 'width','height');
2609: my ($nsrc,$nwidth,$nheight)=
2610: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2611: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2612: &image_replication($loc);
2613: my ($iwidth,$iheight);
2614: if (-e $loc) {
2615: my $image = Image::Magick->new;
2616: $image->Read($loc);
2617: ($iwidth, $iheight) = ($image->Get('width'),
2618: $image->Get('height'));
2619: }
2620: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2621: # changed image or no size specified,
2622: # if they didn't explicitly change the
2623: # width or height use the ones from the image
2624: if ($iwidth && $iheight) {
2625: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2626: $token->[2]{'width'} = $iwidth;$ctag=1;
2627: }
2628: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2629: $token->[2]{'height'}=$iheight;$ctag=1;
2630: }
2631: }
2632: }
2633: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2634: # if we don't have a width or height
2635: if ($iwidth && $cwidth && !$cheight) {
2636: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2637: }
2638: if ($iheight && $cheight && !$cwidth) {
2639: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2640: }
2641: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2642: }
2643: return $currentstring;
2644: }
2645:
2646: sub end_img {
2647: my ($target,$token) = @_;
2648: my $currentstring = '';
2649: if ($target eq 'web') {
2650: $currentstring = $token->[2];
2651: } elsif ($target eq 'tex') {
2652: $currentstring = '';
2653: }
2654: return $currentstring;
2655: }
2656:
2657: #-- <applet> tag (end tag required)
2658: sub start_applet {
2659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2660:
2661: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2662: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2663:
2664: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2665: undef,1);
2666: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2667:
2668: my $currentstring = '';
2669: if ($target eq 'web') {
2670: if ($ENV{'browser.appletsuppress'} ne 'on') {
2671: $currentstring = $token->[4];
2672: } else {
2673: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2674: $safeeval,undef,1);
2675: unless ($alttag) {
2676: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2677: $code);
2678: }
2679: $currentstring='[APPLET: '.$alttag.']';
2680: }
2681: } elsif ($target eq 'tex') {
2682: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2683: $safeeval,undef,1);
2684: unless ($alttag) {
2685: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2686: undef,1);
2687: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2688: $code);
2689: }
2690: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2691: '.}\end{center}';
2692: }
2693: return $currentstring;
2694: }
2695:
2696: sub end_applet {
2697: my ($target,$token) = @_;
2698: my $currentstring = '';
2699: if ($target eq 'web') {
2700: $currentstring = $token->[2];
2701: } elsif ($target eq 'tex') {
2702: }
2703: return $currentstring;
2704: }
2705:
2706: #-- <embed> tag (end tag optional/required)
2707: sub start_embed {
2708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2709: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2710: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2711: my $currentstring = '';
2712: if ($target eq 'web') {
2713: if ($ENV{'browser.embedsuppress'} ne 'on') {
2714: $currentstring = $token->[4];
2715: } else {
2716: my $alttag=&Apache::lonxml::get_param
2717: ('alt',$parstack,$safeeval,undef,1);
2718: unless ($alttag) {
2719: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2720: }
2721: $currentstring='[EMBED: '.$alttag.']';
2722: }
2723: } elsif ($target eq 'tex') {
2724: }
2725: return $currentstring;
2726: }
2727:
2728: sub end_embed {
2729: my ($target,$token) = @_;
2730: my $currentstring = '';
2731: if ($target eq 'web') {
2732: $currentstring = $token->[2];
2733: } elsif ($target eq 'tex') {
2734: }
2735: return $currentstring;
2736: }
2737:
2738: #-- <param> tag (end tag forbidden)
2739: sub start_param {
2740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2741: if (&Apache::lonxml::get_param
2742: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2743: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2744: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2745: }
2746: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2747: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2748: my $currentstring = '';
2749: if ($target eq 'web') {
2750: $currentstring = $token->[4];
2751: } elsif ($target eq 'tex') {
2752: }
2753: return $currentstring;
2754: }
2755:
2756: sub end_param {
2757: my ($target,$token) = @_;
2758: my $currentstring = '';
2759: if ($target eq 'web') {
2760: $currentstring = $token->[2];
2761: } elsif ($target eq 'tex') {
2762: }
2763: return $currentstring;
2764: }
2765:
2766: #-- <allow> tag
2767: sub start_allow {
2768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2769: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2770: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2771: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2772: &Apache::lonnet::clutter($src);
2773: if ($target eq 'tex') { &image_replication($src); }
2774: my $result;
2775: if ($target eq 'edit') {
2776: $result .=&Apache::edit::tag_start($target,$token);
2777: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2778: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2779: } elsif ($target eq 'modified') {
2780: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2781: $safeeval,'src');
2782: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2783: }
2784: return $result;
2785: }
2786:
2787: sub end_allow {
2788: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2789: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2790: return '';
2791: }
2792:
2793: #-- Frames (end tag required)
2794: #-- <frameset>
2795: sub start_frameset {
2796: my ($target,$token) = @_;
2797: my $currentstring = '';
2798: if ($target eq 'web') {
2799: if (!$Apache::lonxml::registered &&
2800: $ENV{'request.state'} eq 'published') {
2801: $currentstring.='<head>'.
2802: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2803: }
2804: my $onLoad='';
2805: foreach my $key (keys(%{$token->[2]})) {
2806: if ($key =~ /^onload$/i) {
2807: $onLoad.=$token->[2]->{$key}.';';
2808: delete($token->[2]->{$key});
2809: }
2810: }
2811: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2812: my $onUnload='';
2813: foreach my $key (keys(%{$token->[2]})) {
2814: if ($key =~ /^onunload$/i) {
2815: $onUnload.=$token->[2]->{$key}.';';
2816: delete($token->[2]->{$key});
2817: }
2818: }
2819: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2820: ';'.$onUnload;
2821:
2822: $currentstring .= '<'.$token->[1];
2823: foreach (keys %{$token->[2]}) {
2824: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2825: }
2826: $currentstring.='>';
2827: }
2828: return $currentstring;
2829: }
2830:
2831: sub end_frameset {
2832: my ($target,$token) = @_;
2833: my $currentstring = '';
2834: if ($target eq 'web') {
2835: $currentstring = $token->[2];
2836: }
2837: return $currentstring;
2838: }
2839:
2840: #-- <xmp> (end tag required)
2841: sub start_xmp {
2842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2843: my $currentstring = '';
2844: if ($target eq 'web') {
2845: $currentstring .= $token->[4];
2846: } elsif ($target eq 'tex') {
2847: $currentstring .= '\begin{verbatim}';
2848: }
2849: return $currentstring;
2850: }
2851:
2852: sub end_xmp {
2853: my ($target,$token) = @_;
2854: my $currentstring = '';
2855: if ($target eq 'web') {
2856: $currentstring .= $token->[2];
2857: } elsif ($target eq 'tex') {
2858: $currentstring .= '\end{verbatim}';
2859: }
2860: return $currentstring;
2861: }
2862:
2863: #-- <pre> (end tag required)
2864: sub start_pre {
2865: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2866: my $currentstring = '';
2867: if ($target eq 'web') {
2868: $currentstring .= $token->[4];
2869: } elsif ($target eq 'tex') {
2870: $currentstring .= '\begin{verbatim}';
2871: }
2872: return $currentstring;
2873: }
2874:
2875: sub end_pre {
2876: my ($target,$token) = @_;
2877: my $currentstring = '';
2878: if ($target eq 'web') {
2879: $currentstring .= $token->[2];
2880: } elsif ($target eq 'tex') {
2881: $currentstring .= '\end{verbatim}';
2882: }
2883: return $currentstring;
2884: }
2885:
2886: #-- <insert>
2887: sub start_insert {
2888: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2889: my $currentstring = '';
2890: if ($target eq 'web') {
2891: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2892: $currentstring .= '<b>'.$display.'</b>';;
2893: }
2894: return $currentstring;
2895: }
2896:
2897: sub end_insert {
2898: my ($target,$token) = @_;
2899: my $currentstring = '';
2900: if ($target eq 'web') {
2901: $currentstring .= '';
2902: }
2903: return $currentstring;
2904: }
2905:
2906: #-- <externallink>
2907: sub start_externallink {
2908: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2909: my $currentstring = '';
2910: if ($target eq 'web') {
2911: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2912: $currentstring .= '<b>'.$display.'</b>';;
2913: }
2914: return $currentstring;
2915: }
2916:
2917: sub end_externallink {
2918: my ($target,$token) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: $currentstring .= '';
2922: }
2923: return $currentstring;
2924: }
2925:
2926: #-- <blankspace heigth="">
2927: sub start_blankspace {
2928: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'tex') {
2931: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2932: $currentstring .= '\vskip '.$howmuch.' ';
2933: }
2934: return $currentstring;
2935: }
2936:
2937: sub end_blankspace {
2938: my ($target,$token) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'tex') {
2941: $currentstring .= '';
2942: }
2943: return $currentstring;
2944: }
2945:
2946: #-- <abbr> tag (end tag required)
2947: sub start_abbr {
2948: my ($target,$token) = @_;
2949: my $currentstring = '';
2950: if ($target eq 'web') {
2951: $currentstring = $token->[4];
2952: }
2953: return $currentstring;
2954: }
2955:
2956: sub end_abbr {
2957: my ($target,$token) = @_;
2958: my $currentstring = '';
2959: if ($target eq 'web') {
2960: $currentstring = $token->[2];
2961: }
2962: return $currentstring;
2963: }
2964:
2965: #-- <acronym> tag (end tag required)
2966: sub start_acronym {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web') {
2970: $currentstring = $token->[4];
2971: }
2972: return $currentstring;
2973: }
2974:
2975: sub end_acronym {
2976: my ($target,$token) = @_;
2977: my $currentstring = '';
2978: if ($target eq 'web') {
2979: $currentstring = $token->[2];
2980: }
2981: return $currentstring;
2982: }
2983:
2984: #-- <area> tag (end tag forbidden)
2985: sub start_area {
2986: my ($target,$token) = @_;
2987: my $currentstring = '';
2988: if ($target eq 'web') {
2989: $currentstring = $token->[4];
2990: }
2991: return $currentstring;
2992: }
2993:
2994: sub end_area {
2995: my ($target,$token) = @_;
2996: my $currentstring = '';
2997: if ($target eq 'web') {
2998: $currentstring = $token->[2];
2999: }
3000: return $currentstring;
3001: }
3002:
3003: #-- <base> tag (end tag forbidden)
3004: sub start_base {
3005: my ($target,$token) = @_;
3006: my $currentstring = '';
3007: if ($target eq 'web') {
3008: $currentstring = $token->[4];
3009: }
3010: return $currentstring;
3011: }
3012:
3013: sub end_base {
3014: my ($target,$token) = @_;
3015: my $currentstring = '';
3016: if ($target eq 'web') {
3017: $currentstring = $token->[2];
3018: }
3019: return $currentstring;
3020: }
3021:
3022: #-- <bdo> tag (end tag required)
3023: sub start_bdo {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'web') {
3027: $currentstring = $token->[4];
3028: }
3029: return $currentstring;
3030: }
3031:
3032: sub end_bdo {
3033: my ($target,$token) = @_;
3034: my $currentstring = '';
3035: if ($target eq 'web') {
3036: $currentstring = $token->[2];
3037: }
3038: return $currentstring;
3039: }
3040:
3041: #-- <bgsound> tag (end tag optional)
3042: sub start_bgsound {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[4];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: sub end_bgsound {
3052: my ($target,$token) = @_;
3053: my $currentstring = '';
3054: if ($target eq 'web') {
3055: $currentstring = $token->[2];
3056: }
3057: return $currentstring;
3058: }
3059:
3060: #-- <blink> tag (end tag required)
3061: sub start_blink {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[4];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: sub end_blink {
3071: my ($target,$token) = @_;
3072: my $currentstring = '';
3073: if ($target eq 'web') {
3074: $currentstring = $token->[2];
3075: }
3076: return $currentstring;
3077: }
3078:
3079: #-- <blockquote> tag (end tag required)
3080: sub start_blockquote {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[4];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: sub end_blockquote {
3090: my ($target,$token) = @_;
3091: my $currentstring = '';
3092: if ($target eq 'web') {
3093: $currentstring = $token->[2];
3094: }
3095: return $currentstring;
3096: }
3097:
3098: #-- <button> tag (end tag required)
3099: sub start_button {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[4];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: sub end_button {
3109: my ($target,$token) = @_;
3110: my $currentstring = '';
3111: if ($target eq 'web') {
3112: $currentstring = $token->[2];
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <caption> tag (end tag required)
3118: sub start_caption {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[4];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: sub end_caption {
3128: my ($target,$token) = @_;
3129: my $currentstring = '';
3130: if ($target eq 'web') {
3131: $currentstring = $token->[2];
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <col> tag (end tag forbdden)
3137: sub start_col {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[4];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: sub end_col {
3147: my ($target,$token) = @_;
3148: my $currentstring = '';
3149: if ($target eq 'web') {
3150: $currentstring = $token->[2];
3151: }
3152: return $currentstring;
3153: }
3154:
3155: #-- <colgroup> tag (end tag optional)
3156: sub start_colgroup {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[4];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: sub end_colgroup {
3166: my ($target,$token) = @_;
3167: my $currentstring = '';
3168: if ($target eq 'web') {
3169: $currentstring = $token->[2];
3170: }
3171: return $currentstring;
3172: }
3173:
3174: #-- <del> tag (end tag required)
3175: sub start_del {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[4];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: sub end_del {
3185: my ($target,$token) = @_;
3186: my $currentstring = '';
3187: if ($target eq 'web') {
3188: $currentstring = $token->[2];
3189: }
3190: return $currentstring;
3191: }
3192:
3193: #-- <fieldset> tag (end tag required)
3194: sub start_fieldset {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[4];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_fieldset {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: $currentstring = $token->[2];
3208: }
3209: return $currentstring;
3210: }
3211:
3212: #-- <frame> tag (end tag forbidden)
3213: sub start_frame {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[4];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: sub end_frame {
3223: my ($target,$token) = @_;
3224: my $currentstring = '';
3225: if ($target eq 'web') {
3226: $currentstring = $token->[2];
3227: }
3228: return $currentstring;
3229: }
3230:
3231: #-- <iframe> tag (end tag required)
3232: sub start_iframe {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[4];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: sub end_iframe {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web') {
3245: $currentstring = $token->[2];
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <ins> tag (end tag required)
3251: sub start_ins {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[4];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: sub end_ins {
3261: my ($target,$token) = @_;
3262: my $currentstring = '';
3263: if ($target eq 'web') {
3264: $currentstring = $token->[2];
3265: }
3266: return $currentstring;
3267: }
3268:
3269: #-- <isindex> tag (end tag forbidden)
3270: sub start_isindex {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[4];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: sub end_isindex {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web') {
3283: $currentstring = $token->[2];
3284: }
3285: return $currentstring;
3286: }
3287:
3288: #-- <keygen> tag (end tag forbidden)
3289: sub start_keygen {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[4];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: sub end_keygen {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web') {
3302: $currentstring = $token->[2];
3303: }
3304: return $currentstring;
3305: }
3306:
3307: #-- <label> tag
3308: sub start_label {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[4];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: sub end_label {
3318: my ($target,$token) = @_;
3319: my $currentstring = '';
3320: if ($target eq 'web') {
3321: $currentstring = $token->[2];
3322: }
3323: return $currentstring;
3324: }
3325:
3326: #-- <layer> tag (end tag required)
3327: sub start_layer {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[4];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: sub end_layer {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web') {
3340: $currentstring = $token->[2];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: #-- <legend> tag (end tag required)
3346: sub start_legend {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[4];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: sub end_legend {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web') {
3359: $currentstring = $token->[2];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: #-- <link> tag (end tag forbidden)
3365: sub start_link {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[4];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: sub end_link {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web') {
3378: $currentstring = $token->[2];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: #-- <marquee> tag (end tag optional)
3384: sub start_marquee {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[4];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: sub end_marquee {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web') {
3397: $currentstring = $token->[2];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: #-- <multicol> tag (end tag required)
3403: sub start_multicol {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[4];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: sub end_multicol {
3413: my ($target,$token) = @_;
3414: my $currentstring = '';
3415: if ($target eq 'web') {
3416: $currentstring = $token->[2];
3417: }
3418: return $currentstring;
3419: }
3420:
3421: #-- <nobr> tag (end tag required)
3422: sub start_nobr {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[4];
3427: } elsif ($target eq 'tex') {
3428: $currentstring='\mbox{';
3429: }
3430: return $currentstring;
3431: }
3432:
3433: sub end_nobr {
3434: my ($target,$token) = @_;
3435: my $currentstring = '';
3436: if ($target eq 'web') {
3437: $currentstring = $token->[2];
3438: } elsif ($target eq 'tex') {
3439: $currentstring='}';
3440: }
3441: return $currentstring;
3442: }
3443:
3444: #-- <noembed> tag (end tag required)
3445: sub start_noembed {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web') {
3449: $currentstring = $token->[4];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: sub end_noembed {
3455: my ($target,$token) = @_;
3456: my $currentstring = '';
3457: if ($target eq 'web') {
3458: $currentstring = $token->[2];
3459: }
3460: return $currentstring;
3461: }
3462:
3463: #-- <noframes> tag (end tag required)
3464: sub start_noframes {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web') {
3468: $currentstring = $token->[4];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: sub end_noframes {
3474: my ($target,$token) = @_;
3475: my $currentstring = '';
3476: if ($target eq 'web') {
3477: $currentstring = $token->[2];
3478: }
3479: return $currentstring;
3480: }
3481:
3482: #-- <nolayer> tag (end tag required)
3483: sub start_nolayer {
3484: my ($target,$token) = @_;
3485: my $currentstring = '';
3486: if ($target eq 'web') {
3487: $currentstring = $token->[4];
3488: }
3489: return $currentstring;
3490: }
3491:
3492: sub end_nolayer {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web') {
3496: $currentstring = $token->[2];
3497: }
3498: return $currentstring;
3499: }
3500:
3501: #-- <noscript> tag (end tag required)
3502: sub start_noscript {
3503: my ($target,$token) = @_;
3504: my $currentstring = '';
3505: if ($target eq 'web') {
3506: $currentstring = $token->[4];
3507: }
3508: return $currentstring;
3509: }
3510:
3511: sub end_noscript {
3512: my ($target,$token) = @_;
3513: my $currentstring = '';
3514: if ($target eq 'web') {
3515: $currentstring = $token->[2];
3516: }
3517: return $currentstring;
3518: }
3519:
3520: #-- <object> tag (end tag required)
3521: sub start_object {
3522: my ($target,$token) = @_;
3523: my $currentstring = '';
3524: if ($target eq 'web') {
3525: $currentstring = $token->[4];
3526: }
3527: return $currentstring;
3528: }
3529:
3530: sub end_object {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web') {
3534: $currentstring = $token->[2];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: #-- <optgroup> tag (end tag required)
3540: sub start_optgroup {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web') {
3544: $currentstring = $token->[4];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: sub end_optgroup {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web') {
3553: $currentstring = $token->[2];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: #-- <samp> tag (end tag required)
3559: sub start_samp {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web') {
3563: $currentstring = $token->[4];
3564: } elsif ($target eq 'tex') {
3565: $currentstring='\texttt{';
3566: }
3567: return $currentstring;
3568: }
3569:
3570: sub end_samp {
3571: my ($target,$token) = @_;
3572: my $currentstring = '';
3573: if ($target eq 'web') {
3574: $currentstring = $token->[2];
3575: } elsif ($target eq 'tex') {
3576: $currentstring='}';
3577: }
3578: return $currentstring;
3579: }
3580:
3581: #-- <server> tag
3582: sub start_server {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web') {
3586: $currentstring = $token->[4];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: sub end_server {
3592: my ($target,$token) = @_;
3593: my $currentstring = '';
3594: if ($target eq 'web') {
3595: $currentstring = $token->[2];
3596: }
3597: return $currentstring;
3598: }
3599:
3600: #-- <spacer> tag (end tag forbidden)
3601: sub start_spacer {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web') {
3605: $currentstring = $token->[4];
3606: }
3607: return $currentstring;
3608: }
3609:
3610: sub end_spacer {
3611: my ($target,$token) = @_;
3612: my $currentstring = '';
3613: if ($target eq 'web') {
3614: $currentstring = $token->[2];
3615: }
3616: return $currentstring;
3617: }
3618:
3619: #-- <span> tag (end tag required)
3620: sub start_span {
3621: my ($target,$token) = @_;
3622: my $currentstring = '';
3623: if ($target eq 'web') {
3624: $currentstring = $token->[4];
3625: }
3626: return $currentstring;
3627: }
3628:
3629: sub end_span {
3630: my ($target,$token) = @_;
3631: my $currentstring = '';
3632: if ($target eq 'web') {
3633: $currentstring = $token->[2];
3634: }
3635: return $currentstring;
3636: }
3637:
3638: #-- <tbody> tag (end tag optional)
3639: sub start_tbody {
3640: my ($target,$token) = @_;
3641: my $currentstring = '';
3642: if ($target eq 'web') {
3643: $currentstring = $token->[4];
3644: }
3645: return $currentstring;
3646: }
3647:
3648: sub end_tbody {
3649: my ($target,$token) = @_;
3650: my $currentstring = '';
3651: if ($target eq 'web') {
3652: $currentstring = $token->[2];
3653: }
3654: return $currentstring;
3655: }
3656:
3657: #-- <tfoot> tag (end tag optional)
3658: sub start_tfoot {
3659: my ($target,$token) = @_;
3660: my $currentstring = '';
3661: if ($target eq 'web') {
3662: $currentstring = $token->[4];
3663: }
3664: return $currentstring;
3665: }
3666:
3667: sub end_tfoot {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web') {
3671: $currentstring = $token->[2];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: #-- <thead> tag (end tag optional)
3677: sub start_thead {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web') {
3681: $currentstring = $token->[4];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: sub end_thead {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web') {
3690: $currentstring = $token->[2];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: #-- <var> tag
3696: sub start_var {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web') {
3700: $currentstring = $token->[4];
3701: } elsif ($target eq 'tex') {
3702: $currentstring = '\textit{';
3703: }
3704: return $currentstring;
3705: }
3706:
3707: sub end_var {
3708: my ($target,$token) = @_;
3709: my $currentstring = '';
3710: if ($target eq 'web') {
3711: $currentstring = $token->[2];
3712: } elsif ($target eq 'tex') {
3713: $currentstring = '}';
3714: }
3715: return $currentstring;
3716: }
3717:
3718: #-- <wbr> tag (end tag forbidden)
3719: sub start_wbr {
3720: my ($target,$token) = @_;
3721: my $currentstring = '';
3722: if ($target eq 'web') {
3723: $currentstring = $token->[4];
3724: }
3725: return $currentstring;
3726: }
3727:
3728: sub end_wbr {
3729: my ($target,$token) = @_;
3730: my $currentstring = '';
3731: if ($target eq 'web') {
3732: $currentstring = $token->[2];
3733: }
3734: return $currentstring;
3735: }
3736:
3737: #-- <hideweboutput> tag
3738: sub start_hideweboutput {
3739: my ($target,$token) = @_;
3740: if ($target eq 'web') {
3741: &Apache::lonxml::startredirection();
3742: }
3743: return '';
3744: }
3745:
3746: sub end_hideweboutput {
3747: my ($target,$token) = @_;
3748: my $currentstring = '';
3749: if ($target eq 'web') {
3750: $currentstring = &Apache::lonxml::endredirection();
3751: }
3752: return '';
3753: }
3754:
3755:
3756: sub image_replication {
3757: my $src = shift;
3758: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3759: #replicates eps or ps
3760: my $epssrc = my $pssrc = $src;
3761: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3762: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3763: if (not -e $epssrc && not -e $pssrc) {
3764: my $result=&Apache::lonnet::repcopy($epssrc);
3765: if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
3766: }
3767: return '';
3768: }
3769:
3770: sub image_size {
3771: my ($src,$scaling,$parstack,$safeeval)=@_;
3772: #size of image from gif/jpg/jpeg/png
3773: my $image = Image::Magick->new;
3774: my $current_figure = $image->Read($src);
3775: my $width_param = $image->Get('width') * $scaling;;
3776: my $height_param = $image->Get('height') * $scaling;;
3777: undef $image;
3778: #do we have any specified LaTeX size of the picture?
3779: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
3780: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
3781: #do we have any specified web size of the picture?
3782: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3783: undef,1);
3784: if ($TeXwidth ne '') {
3785: if ($TeXwidth=~/(\d+)\s*\%/) {
3786: $width_param = $1*$ENV{'form.textwidth'}/100;
3787: } else {
3788: $width_param = $TeXwidth;
3789: }
3790: } elsif ($TeXheight ne '') {
3791: $height_param = $TeXheight;
3792: $width_param = $TeXheight/$height_param*$width_param;
3793: } elsif ($width ne '') {
3794: $width_param = $width*$scaling;
3795: }
3796: if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
3797: return ($height_param, $width_param);
3798: }
3799:
3800: sub image_width {
3801: my ($height, $width) = &image_size(@_);
3802: return $width;
3803: }
3804: # Not yet 100% sure this is correct in all circumstances..
3805: # due to my uncertainty about mods to image_size.
3806: #
3807: sub image_height {
3808: my ($height, $width) = &image_size(@_);
3809: return $height;
3810: }
3811:
3812: sub eps_generation {
3813: my ($src,$file,$width_param) = @_;
3814: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3815: my $temp_file = Apache::File->new('>>'.$filename);
3816: print $temp_file "$src\n";
3817: my $newsrc = $src;
3818: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3819: $newsrc=~s/\/home\/httpd\/html\/res//;
3820: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3821: $newsrc=~s/\/\.\//\//;
3822: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3823: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3824: $newsrc=~s/\/home\/httpd\/lonUsers//;
3825: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3826: }
3827: if ($newsrc=~/\/userfiles\//) {
3828: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3829: } else {
3830: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3831: }
3832: }
3833:
3834: sub file_path {
3835: my $src=shift;
3836: my ($file,$path);
3837: if ($src =~ m!(.*)/([^/]*)$!) {
3838: $file = $2;
3839: $path = $1.'/';
3840: }
3841: return $file,$path;
3842: }
3843:
3844: sub recalc {
3845: my $argument = shift;
3846: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3847: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3848: my $value=$1;
3849: my $units=$2;
3850: if ($units eq 'cm') {
3851: $value*=10;
3852: } elsif ($units eq 'in') {
3853: $value*=25.4;
3854: } elsif ($units eq 'pc') {
3855: $value*=(25.4*12/72.27);
3856: } elsif ($units eq 'pt') {
3857: $value*=(25.4/72.27);
3858: }
3859: return $value.' mm';
3860: }
3861:
3862: sub LATEX_length {
3863: my $garbage=shift;
3864: $garbage=~s/^\s+$//;
3865: $garbage=~s/^\s+(\S.*)/$1/;#space before
3866: $garbage=~s/(.*\S)\s+$/$1/;#space after
3867: $garbage=~s/(\s)+/$1/;#only one space
3868: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3869: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3870: $garbage=~s/([^\\])\$/$1/g;#$
3871: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3872: $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;
3873: $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;
3874: $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;
3875: $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;
3876: $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;
3877: $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;
3878: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3879: #remove some other LaTeX command
3880: $garbage=~s|\\(\w+)\\|\\|g;
3881: $garbage=~s|\\(\w+)(\s*)|$2|g;
3882: $garbage=~s|\+|11|g;
3883: my $value=length($garbage);
3884: return $value;
3885: }
3886:
3887:
3888:
3889:
3890: 1;
3891: __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