1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.391 2008/09/05 11:23:06 onken Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::Constants qw(:common);
51: use File::Basename;
52: use LONCAPA();
53: # use Data::Dumper;
54:
55: BEGIN {
56:
57: &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'));
58:
59: }
60:
61: #
62: # Dumps all elements of the table structure.
63: # Need this 'cause evidently when given an array, Data::Dumper only seems
64: # to dump element 0.
65: #
66: #sub debug_dump_table {
67: # my $lastrow = $#Apache::londefdef::table;
68: # &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
69: # my $row;
70: # for ($row =0; $row <= $lastrow; $row++ ) {
71: # my $text = Dumper($Apache::londefdef::table[$row]);
72: # &Apache::lonnet::logthis("table [ $row ]".$text);
73: # }
74: #}
75: sub initialize_londefdef {
76: $Apache::londefdef::TD_redirection=0;
77: @Apache::londefdef::table = ();
78: $Apache::londefdef::select=0;
79: undef(@Apache::londefdef::description);
80: @Apache::londefdef::DD=(0);
81: @Apache::londefdef::DT=(0);
82: @Apache::londefdef::seenDT=(0);
83: $Apache::londefdef::list_index=0;
84: undef($Apache::londefdef::head);
85: undef($Apache::londefdef::title);
86: }
87:
88: #======================= TAG SUBROUTINES =====================
89: #-- <output>
90: sub start_output {
91: my ($target) = @_;
92: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
93: return '';
94: }
95: sub end_output {
96: my ($target) = @_;
97: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
98: return '';
99: }
100: #-- <m> tag
101: sub start_m {
102: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
103: my $currentstring = '';
104: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
105: if ($target eq 'web' || $target eq 'analyze') {
106: &Apache::lonxml::debug("M is starting with:$inside:");
107: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
108: if ($eval eq 'on') {
109: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
110: #&Apache::lonxml::debug("M is evaulated to:$inside:");
111: }
112: my $tex = $inside;
113: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
114: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
115: if ($Apache::lontexconvert::errorstring) {
116: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
117: $tex = &HTML::Entities::encode($tex,'<>&"');
118: my ($linenumber) =
119: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
120: if (defined($linenumber)) {
121: my @tex=split("\n",$tex);
122: $tex[$linenumber]='<b><font color="red">'.
123: $tex[$linenumber].'</font></b>';
124: $tex=join("\n",@tex);
125: }
126: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
127: $Apache::lontexconvert::errorstring='';
128: }
129: #&Apache::lonxml::debug("M is ends with:$currentstring:");
130: $Apache::lonxml::post_evaluate=0;
131: } elsif ($target eq 'tex') {
132:
133: $currentstring = $inside;
134: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
135: if ($eval eq 'on') {
136: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
137: }
138: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
139: # detect simple math mode entry exits, and convert them
140: # to use \ensuremath ... unless there's a \verb inside.
141: if (! ($currentstring=~/\\verb/)) {
142: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
143: $currentstring=~s/^(\s*)\$/$1/;
144: $currentstring=~s/\$(\s*)$/$1/;
145: $currentstring='\ensuremath{'.$currentstring.'}';
146: }
147: }
148: $Apache::lonxml::post_evaluate=0;
149: }
150: return $currentstring;
151: }
152:
153: sub end_m {
154: my ($target,$token) = @_;
155: my $currentstring = '';
156: if ($target eq 'tex') {
157: $currentstring = "";
158: }
159: return $currentstring;
160: }
161:
162: sub start_tthoption {
163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
164: my $result;
165: if ($target eq 'web' || $target eq 'webgrade') {
166: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
167: $style);
168: $inside=~s/^\s*//;
169: if ($env{'browser.mathml'}) {
170: &tth::ttmoptions($inside);
171: } else {
172: &tth::tthoptions($inside);
173: }
174: }
175: return $result;
176: }
177:
178: sub end_tthoption {
179: my ($target,$token) = @_;
180: my $result;
181: return $result;
182: }
183:
184: #-- <html> tag (end tag optional)
185: sub start_html {
186: my ($target,$token) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
189: # start_body() takes care of emitting the <html>
190: } elsif ($target eq 'tex') {
191: $currentstring .=
192: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
193: if (($env{'form.latex_type'}=~'batchmode') ||
194: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
195: $currentstring .= '\newcommand{\keephidden}[1]{}'.
196: '\renewcommand{\deg}{$^{\circ}$}'.
197: '\usepackage{multirow}'.
198: '\usepackage{longtable}'.
199: '\usepackage{textcomp}'.
200: '\usepackage{makeidx}'.
201: '\usepackage[dvips]{graphicx}'.
202: '\usepackage{wrapfig}'.
203: '\usepackage{picins}'.
204: '\usepackage[T1]{fontenc}'."\n".
205: '\usepackage[postscript]{ucs}'."\n".
206: '\usepackage[utf8x]{inputenc}'."\n".
207: '\usepackage{pifont}' ."\n".
208: '\usepackage{latexsym}'."\n".
209: '\usepackage{epsfig}'.
210: '\usepackage{calc}'.
211: '\usepackage{amsmath}'.
212: '\usepackage{amssymb}'.
213: '\usepackage{amsfonts}'.
214: '\usepackage{amsthm}'.
215: '\usepackage{amscd}';
216:
217: if($env{'form.pdfFormFields'} eq 'yes') {
218: $currentstring .= '\usepackage{hyperref}'.
219: '\usepackage{eforms}'.
220: '\usepackage{tabularx}';
221: }
222:
223: $currentstring .= '\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}}'.
224: '\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}}';
225: }
226: return $currentstring;
227: }
228:
229: sub end_html {
230: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
231: my $currentstring = '';
232: if ($target eq 'web' || $target eq 'webgrade') {
233: # end_body takes care of the </html>
234: }
235: return $currentstring;
236: }
237:
238: #-- <head> tag (end tag optional)
239: sub start_head {
240: my ($target,$token) = @_;
241: my $currentstring = '';
242: if ($target eq 'web' || $target eq 'webgrade') {
243: &Apache::lonxml::startredirection();
244: }
245: return $currentstring;
246: }
247:
248: sub end_head {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
252: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
253: # in case there is a </head> but no <head>
254: if ($Apache::lonxml::redirection) {
255: $Apache::londefdef::head = &Apache::lonxml::endredirection();
256: }
257: }
258: return $currentstring;
259: }
260:
261: #-- <map> tag (end tag required)
262: sub start_map {
263: my ($target,$token) = @_;
264: my $currentstring = '';
265: if ($target eq 'web' || $target eq 'webgrade') {
266: $currentstring = $token->[4];
267: }
268: return $currentstring;
269: }
270:
271: sub end_map {
272: my ($target,$token) = @_;
273: my $currentstring = '';
274: if ($target eq 'web' || $target eq 'webgrade') {
275: $currentstring = $token->[2];
276: }
277: return $currentstring;
278: }
279:
280: #-- <select> tag (end tag required)
281: sub start_select {
282: my ($target,$token) = @_;
283: my $currentstring = '';
284: if ($target eq 'web' || $target eq 'webgrade') {
285: $currentstring = $token->[4];
286: } elsif ($target eq 'tex') {
287: $Apache::londefdef::select=0;
288: }
289: return $currentstring;
290: }
291:
292: sub end_select {
293: my ($target,$token) = @_;
294: my $currentstring = '';
295: if ($target eq 'web' || $target eq 'webgrade') {
296: $currentstring = $token->[2];
297: }
298: return $currentstring;
299: }
300:
301: #-- <option> tag (end tag optional)
302: sub start_option {
303: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
304: my $currentstring = '';
305: if ($target eq 'web' || $target eq 'webgrade') {
306: $currentstring = $token->[4];
307: } elsif ($target eq 'tex') {
308: $Apache::londefdef::select++;
309: if ($Apache::londefdef::select == 1) {
310: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
311: } else {
312: $currentstring='\keephidden{';
313: }
314: }
315: return $currentstring;
316: }
317:
318: sub end_option {
319: my ($target,$token) = @_;
320: my $currentstring = '';
321: if ($target eq 'web' || $target eq 'webgrade') {
322: $currentstring = $token->[2];
323: } elsif ($target eq 'tex') {
324: $currentstring='}';
325: }
326: return $currentstring;
327: }
328:
329: #-- <input> tag (end tag forbidden)
330: sub start_input {
331: my ($target,$token) = @_;
332: my $currentstring = '';
333: if ($target eq 'web' || $target eq 'webgrade') {
334: $currentstring = $token->[4];
335: }
336: return $currentstring;
337: }
338:
339: sub end_input {
340: my ($target,$token) = @_;
341: my $currentstring = '';
342: if ($target eq 'web' || $target eq 'webgrade') {
343: $currentstring = $token->[2];
344: }
345: return $currentstring;
346: }
347:
348: #-- <textarea> tag (end tag required)
349: sub start_textarea {
350: my ($target,$token) = @_;
351: my $currentstring = '';
352: if ($target eq 'web' || $target eq 'webgrade') {
353: $currentstring = $token->[4];
354: }
355: return $currentstring;
356: }
357:
358: sub end_textarea {
359: my ($target,$token) = @_;
360: my $currentstring = '';
361: if ($target eq 'web' || $target eq 'webgrade') {
362: $currentstring = $token->[2];
363: }
364: return $currentstring;
365: }
366:
367: #-- <form> tag (end tag required)
368: sub start_form {
369: my ($target,$token) = @_;
370: my $currentstring = '';
371: if ($target eq 'web' || $target eq 'webgrade') {
372: $currentstring = $token->[4];
373: }
374: return $currentstring;
375: }
376:
377: sub end_form {
378: my ($target,$token) = @_;
379: my $currentstring = '';
380: if ($target eq 'web' || $target eq 'webgrade') {
381: $currentstring = $token->[2];
382: }
383: return $currentstring;
384: }
385:
386: #-- <title> tag (end tag required)
387: sub start_title {
388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
389: my $currentstring = '';
390: if ($target eq 'web' || $target eq 'webgrade') {
391: $Apache::londefdef::title =
392: &Apache::lonxml::get_all_text('/title',$parser,$style);
393: } elsif ($target eq 'tex') {
394: $currentstring .= '\keephidden{Title of the document: '
395: }
396: if ($target eq 'meta') {
397: $currentstring='<title>';
398: &start_output($target);
399: }
400: return $currentstring;
401: }
402:
403: sub end_title {
404: my ($target,$token) = @_;
405: my $currentstring = '';
406: if ($target eq 'web' || $target eq 'webgrade') {
407: # start_title takes care of swallowing the title
408: } elsif ($target eq 'tex') {
409: $currentstring .= '}';
410: }
411: if ($target eq 'meta') {
412: &end_output($target);
413: $currentstring='</title>';
414: }
415: return $currentstring;
416: }
417:
418: #-- <meta> tag (end tag forbidden)
419: sub start_meta {
420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
421: my $currentstring = '';
422: if ($target eq 'web' || $target eq 'webgrade') {
423: my $args='';
424: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
425: if ($args eq '') {
426: &Apache::lonxml::get_all_text("/meta",$parser,$style);
427: } else {
428: $currentstring = $token->[4];
429: }
430: } elsif ($target eq 'meta') {
431: unless (&Apache::lonxml::get_param
432: ('http-equiv',$parstack,$safeeval,undef,1)) {
433: my $name=$token->[2]->{'name'};
434: $name=~tr/A-Z/a-z/;
435: $name=~s/\s/\_/gs;
436: $name=~s/\W//gs;
437: if ($name) {
438: $currentstring='<'.$name;
439: my $display=&Apache::lonxml::get_param
440: ('display',$parstack,$safeeval,undef,1);
441: if ($display) {
442: $display=~s/\"/\'/g;
443: $currentstring.=' display="'.$display.'"';
444: }
445: $currentstring.='>'.
446: &Apache::lonxml::get_param
447: ('content',$parstack,$safeeval,undef,1).
448: '</'.$name.'>';
449: }
450: my $display=&Apache::lonxml::get_param
451: ('display',$parstack,$safeeval,undef,1);
452: if ($display) {
453: $display=&HTML::Entities::encode($display,'<>&"');
454: $currentstring.='<'.$name.'.display>'.$display.
455: '</'.$name.'.display>';
456: }
457: }
458: } elsif ($target eq 'tex') {
459: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
460: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
461: if ((not defined $content) && (not defined $name)) {
462: &Apache::lonxml::startredirection();
463: }
464: } elsif ($target eq 'edit') {
465: $currentstring .= &Apache::edit::tag_start($target,$token);
466: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
467: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
468: $currentstring .= &Apache::edit::end_row();
469: } elsif ($target eq 'modified') {
470: my $constructtag =
471: &Apache::edit::get_new_args($token,$parstack,$safeeval,
472: 'name','content');
473: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
474: }
475: return $currentstring;
476: }
477:
478: sub end_meta {
479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
480: my $currentstring = '';
481: if ($target eq 'web' || $target eq 'webgrade') {
482: my $args='';
483: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
484: if ($args ne '') {
485: $currentstring = $token->[4];
486: }
487: } elsif ($target eq 'tex') {
488: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
489: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
490: if ((not defined $content) && (not defined $name)) {
491: &Apache::lonxml::endredirection();
492: }
493: }
494: return $currentstring;
495: }
496:
497: sub insert_meta {
498: return '
499: <meta />';
500: }
501:
502: # accessrule
503: sub start_accessrule {
504: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
505: my $currentstring = '';
506: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
507: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
508: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
509: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
510:
511: my ($dom,$crs,$sec,$separator);
512: if ($type eq 'user') {
513: ($dom,$crs,$sec)=split(m{/},$realm);
514: $crs = &LONCAPA::clean_username($crs);
515: $separator = '/';
516: } else {
517: ($dom,$crs,$sec)=split(/\_/,$realm);
518: $crs = &LONCAPA::clean_courseid($crs);
519: $separator = '_';
520: }
521: $dom = &LONCAPA::clean_domain($dom);
522:
523: $sec =~s/\W//;
524: $realm = $dom;
525: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
526: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
527: $role=~s/\W//g;
528:
529: if ($target eq 'web') {
530: my $args='';
531: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
532: if ($args eq '') {
533: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
534: } else {
535: $currentstring = $token->[4];
536: }
537: }
538: if ($target eq 'meta') {
539: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
540: }
541: return $currentstring;
542: }
543:
544: sub end_accessrule {
545: my ($target,$token,$tagstack,$parstack,$parser) = @_;
546: my $currentstring = '';
547: if ($target eq 'web') {
548: my $args='';
549: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
550: if ($args ne '') {
551: $currentstring = $token->[4];
552: }
553: }
554: return $currentstring;
555: }
556:
557: sub generate_css_links {
558: my $links;
559: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
560: if ($css_href =~ /\S/) {
561: &Apache::lonxml::extlink($css_href);
562: $links .=
563: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
564: }
565: return $links;
566: }
567:
568: #-- <body> tag (end tag required)
569: sub start_body {
570: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
571: my $currentstring = '';
572:
573: if ($target eq 'web' || $target eq 'webgrade') {
574: if ($Apache::lonhomework::parsing_a_problem) {
575: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
576: return '';
577: }
578:
579: if (&is_inside_of($tagstack, "head")) {
580: &end_head(@_);
581: }
582:
583: my $extra_head = &generate_css_links();
584:
585: $currentstring =
586: &Apache::loncommon::start_page($Apache::londefdef::title,
587: $Apache::londefdef::head
588: .$extra_head,
589: {'add_entries' => $token->[2],
590: 'no_title' => 1,
591: 'force_register' => 1});
592:
593: if ($env{'request.state'} ne 'published') {
594: $currentstring.=&Apache::lonmenu::constspaceform();
595: $currentstring.=&Apache::londefdef::edit_controls();
596: }
597: $currentstring.=&Apache::lonxml::message_location();
598: } elsif ($target eq 'tex') {
599: $currentstring = '\begin{document}';
600: }
601: return $currentstring;
602: }
603:
604: sub edit_controls {
605: my $result .= '
606: <form method="post">
607: <div class="LC_edit_problem_header">
608: <div class="LC_edit_problem_header_row1">'.
609: &Apache::lonxml::renderingoptions().'
610: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
611: </div>
612: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="Edit" /></div></div>
613: </form>
614: <br />';
615: return $result;
616: }
617:
618: sub end_body {
619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
620: my $currentstring = &end_p(); # Close off unclosed <p>
621: if ($target eq 'web' || $target eq 'webgrade') {
622: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
623: } elsif ($target eq 'tex') {
624: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
625: }
626: return $currentstring;
627: }
628:
629: # \begin{center} causes a new paragprah spacing that looks odd inside
630: # of a table cell. Same at the end of a \center but with a slightly
631: # larger space .. hence center_correction and center_end_correction.
632: #
633: sub center_correction { return '\vspace*{-6 mm}'; }
634: sub center_end_correction { return '\vspace*{-7 mm}'; }
635:
636: #-- <center> tag (end tag required)
637: sub start_center {
638: my ($target,$token,$tagstack) = @_;
639: my $currentstring = &end_p(); # Close off any prior para.
640: if ($target eq 'web' || $target eq 'webgrade') {
641: $currentstring .= $token->[4];
642: } elsif ($target eq 'tex') {
643: if (&is_inside_of($tagstack, "table")) {
644: $currentstring .= ¢er_correction();
645: }
646: $currentstring .= '\begin{center}';
647: }
648: return $currentstring;
649: }
650:
651: sub end_center {
652: my ($target,$token,$tagstack) = @_;
653: my $currentstring = '';
654: if ($target eq 'web' || $target eq 'webgrade') {
655: $currentstring = $token->[2];
656: } elsif ($target eq 'tex') {
657: $currentstring = '\end{center}';
658: if (&is_inside_of($tagstack, "table")) {
659: $currentstring .= ¢er_end_correction();
660: }
661: }
662: return $currentstring;
663: }
664:
665: #-- <b> tag (end tag required)
666: # NOTE: In TeX mode disables internal <p>
667: sub start_b {
668: my ($target,$token) = @_;
669: my $currentstring = '';
670: if ($target eq 'web' || $target eq 'webgrade') {
671: $currentstring = $token->[4];
672: } elsif ($target eq 'tex') {
673: &disable_para();
674: $currentstring .= '\textbf{';
675: }
676: return $currentstring;
677: }
678:
679: sub end_b {
680: my ($target,$token) = @_;
681: my $currentstring = '';
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring = $token->[2];
684: } elsif ($target eq 'tex') {
685: &enable_para();
686: $currentstring = '}';
687: }
688: return $currentstring;
689: }
690:
691: #-- <strong> tag (end tag required)
692: # NOTE: in TeX mode disables internal <p>
693: sub start_strong {
694: my ($target,$token) = @_;
695: my $currentstring = '';
696: if ($target eq 'web' || $target eq 'webgrade') {
697: $currentstring = $token->[4];
698: } elsif ($target eq 'tex') {
699: &disable_para();
700: $currentstring = '\textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_strong {
706: my ($target,$token) = @_;
707: my $currentstring = '';
708: if ($target eq 'web' || $target eq 'webgrade') {
709: $currentstring = $token->[2];
710: } elsif ($target eq 'tex') {
711: &enable_para();
712: $currentstring = '}';
713: }
714: return $currentstring;
715: }
716:
717: #-- <h1> tag (end tag required)
718: sub start_h1 {
719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
720: my $currentstring = &end_p(); # Close off any prior para.
721: if ($target eq 'web' || $target eq 'webgrade') {
722: $currentstring .= $token->[4];
723: } elsif ($target eq 'tex') {
724: my $pre;
725: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
726: if ($align eq 'center') {
727: $pre='\begin{center}';
728: } elsif ($align eq 'left') {
729: $pre='\rlap{';
730: } elsif ($align eq 'right') {
731: $pre=' \hfill \llap{';
732: }
733: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
734: if (not defined $TeXsize) {$TeXsize="large";}
735: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
736: } elsif ($target eq 'meta') {
737: $currentstring.='<subject>';
738: &start_output($target);
739: }
740: return $currentstring;
741: }
742:
743: sub end_h1 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = '';
746: if ($target eq 'web' || $target eq 'webgrade') {
747: $currentstring .= $token->[2];
748: } elsif ($target eq 'tex') {
749: my $post='\vskip 0 mm ';
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if ($align eq 'center') {
752: $post='\end{center}';
753: } elsif ($align eq 'left') {
754: $post='} \hfill'.'\vskip 0 mm ';
755: } elsif ($align eq 'right') {
756: $post='}'.'\vskip 0 mm ';
757: }
758: $currentstring .= '}}'.$post;
759: } elsif ($target eq 'meta') {
760: &end_output($target);
761: $currentstring='</subject>';
762: }
763: return $currentstring;
764: }
765:
766: #-- <h2> tag
767: sub start_h2 {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
769: my $currentstring = &end_p(); # Close off any prior para.
770: if ($target eq 'web' || $target eq 'webgrade') {
771: $currentstring .= $token->[4];
772: } elsif ($target eq 'tex') {
773: my $pre;
774: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
775: if ($align eq 'center') {
776: $pre='\begin{center}';
777: } elsif ($align eq 'left') {
778: $pre='\rlap{';
779: } elsif ($align eq 'right') {
780: $pre=' \hfill \llap{';
781: }
782: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
783: if (not defined $TeXsize) {$TeXsize="large";}
784: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
785: }
786: return $currentstring;
787: }
788:
789: sub end_h2 {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
791: my $currentstring = '';
792: if ($target eq 'web' || $target eq 'webgrade') {
793: $currentstring .= $token->[2];
794: } elsif ($target eq 'tex') {
795: my $post='\vskip 0 mm ';
796: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
797: if ($align eq 'center') {
798: $post='\end{center}';
799: } elsif ($align eq 'left') {
800: $post='} \hfill'.'\vskip 0 mm ';
801: } elsif ($align eq 'right') {
802: $post='}'.'\vskip 0 mm ';
803: }
804: $currentstring .= '}}'.$post;
805: }
806: return $currentstring;
807: }
808:
809: #-- <h3> tag
810: sub start_h3 {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
812: my $currentstring = &end_p(); # Close off any prior para.
813: if ($target eq 'web' || $target eq 'webgrade') {
814: $currentstring .= $token->[4];
815: } elsif ($target eq 'tex') {
816: my $pre;
817: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
818: if ($align eq 'center') {
819: $pre='\begin{center}';
820: } elsif ($align eq 'left') {
821: $pre='\rlap{';
822: } elsif ($align eq 'right') {
823: $pre=' \hfill \llap{';
824: }
825: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
826: if (not defined $TeXsize) {$TeXsize="large";}
827: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
828: }
829: return $currentstring;
830: }
831:
832: sub end_h3 {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
834: my $currentstring = '';
835: if ($target eq 'web' || $target eq 'webgrade') {
836: $currentstring .= $token->[2];
837: } elsif ($target eq 'tex') {
838: my $post='\vskip 0 mm ';
839: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
840: if ($align eq 'center') {
841: $post='\end{center}';
842: } elsif ($align eq 'left') {
843: $post='} \hfill'.'\vskip 0 mm ';
844: } elsif ($align eq 'right') {
845: $post='}'.'\vskip 0 mm ';
846: }
847: $currentstring .= '}}'.$post;
848: }
849: return $currentstring;
850: }
851:
852: #-- <h4> tag
853: sub start_h4 {
854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
855: my $currentstring = &end_p(); # Close off any prior para.
856: if ($target eq 'web' || $target eq 'webgrade') {
857: $currentstring .= $token->[4];
858: } elsif ($target eq 'tex') {
859: my $pre;
860: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
861: if ($align eq 'center') {
862: $pre='\begin{center}';
863: } elsif ($align eq 'left') {
864: $pre='\rlap{';
865: } elsif ($align eq 'right') {
866: $pre=' \hfill \llap{';
867: }
868: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
869: if (not defined $TeXsize) {$TeXsize="large";}
870: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
871: }
872: return $currentstring;
873: }
874:
875: sub end_h4 {
876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
877: my $currentstring = '';
878: if ($target eq 'web' || $target eq 'webgrade') {
879: $currentstring .= $token->[2];
880: } elsif ($target eq 'tex') {
881: my $post='\vskip 0 mm ';
882: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
883: if ($align eq 'center') {
884: $post='\end{center}';
885: } elsif ($align eq 'left') {
886: $post='} \hfill'.'\vskip 0 mm ';
887: } elsif ($align eq 'right') {
888: $post='}'.'\vskip 0 mm ';
889: }
890: $currentstring .= '}}'.$post;
891: }
892: return $currentstring;
893: }
894:
895: #-- <h5> tag
896: sub start_h5 {
897: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
898: my $currentstring = &end_p(); # Close off any prior paras.
899: if ($target eq 'web' || $target eq 'webgrade') {
900: $currentstring .= $token->[4];
901: } elsif ($target eq 'tex') {
902: my $pre;
903: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
904: if ($align eq 'center') {
905: $pre='\begin{center}';
906: } elsif ($align eq 'left') {
907: $pre='\rlap{';
908: } elsif ($align eq 'right') {
909: $pre=' \hfill \llap{';
910: }
911: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
912: if (not defined $TeXsize) {$TeXsize="large";}
913: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
914: }
915: return $currentstring;
916: }
917:
918: sub end_h5 {
919: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
920: my $currentstring = '';
921: if ($target eq 'web' || $target eq 'webgrade') {
922: $currentstring .= $token->[2];
923: } elsif ($target eq 'tex') {
924: my $post='\vskip 0 mm ';
925: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
926: if ($align eq 'center') {
927: $post='\end{center}';
928: } elsif ($align eq 'left') {
929: $post='} \hfill'.'\vskip 0 mm ';
930: } elsif ($align eq 'right') {
931: $post='}'.'\vskip 0 mm ';
932: }
933: $currentstring .= '}}'.$post;
934: }
935: return $currentstring;
936: }
937:
938: #-- <h6> tag
939: sub start_h6 {
940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
941: my $currentstring = &end_p(); # Close off any prior paras.
942: if ($target eq 'web' || $target eq 'webgrade') {
943: $currentstring .= $token->[4];
944: } elsif ($target eq 'tex') {
945: my $pre;
946: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
947: if ($align eq 'center') {
948: $pre='\begin{center}';
949: } elsif ($align eq 'left') {
950: $pre='\rlap{';
951: } elsif ($align eq 'right') {
952: $pre=' \hfill \llap{';
953: }
954: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
955: if (not defined $TeXsize) {$TeXsize="large";}
956: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
957: }
958: return $currentstring;
959: }
960:
961: sub end_h6 {
962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
963: my $currentstring = '';
964: if ($target eq 'web' || $target eq 'webgrade') {
965: $currentstring .= $token->[2];
966: } elsif ($target eq 'tex') {
967: my $post='\vskip 0 mm ';
968: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
969: if ($align eq 'center') {
970: $post='\end{center}';
971: } elsif ($align eq 'left') {
972: $post='} \hfill'.'\vskip 0 mm ';
973: } elsif ($align eq 'right') {
974: $post='}'.'\vskip 0 mm ';
975: }
976: $currentstring .= '}}'.$post;
977: }
978: return $currentstring;
979: }
980:
981: #--- <cite> tag (end tag required)
982: sub start_cite {
983: my ($target,$token) = @_;
984: my $currentstring = '';
985: if ($target eq 'web' || $target eq 'webgrade') {
986: $currentstring .= $token->[4];
987: } elsif ($target eq 'tex') {
988: $currentstring .= '\textit{';
989: }
990: return $currentstring;
991: }
992:
993: sub end_cite {
994: my ($target,$token) = @_;
995: my $currentstring = '';
996: if ($target eq 'web' || $target eq 'webgrade') {
997: $currentstring .= $token->[2];
998: } elsif ($target eq 'tex') {
999: $currentstring .= '}';
1000: }
1001: return $currentstring;
1002: }
1003:
1004: #-- <i> tag (end tag required)
1005: sub start_i {
1006: my ($target,$token) = @_;
1007: my $currentstring = '';
1008: if ($target eq 'web' || $target eq 'webgrade') {
1009: $currentstring .= $token->[4];
1010: } elsif ($target eq 'tex') {
1011: $currentstring .= '\textit{';
1012: }
1013: return $currentstring;
1014: }
1015:
1016: sub end_i {
1017: my ($target,$token) = @_;
1018: my $currentstring = '';
1019: if ($target eq 'web' || $target eq 'webgrade') {
1020: $currentstring .= $token->[2];
1021: } elsif ($target eq 'tex') {
1022: $currentstring .= '}';
1023: }
1024: return $currentstring;
1025: }
1026:
1027: #-- <address> tag (end tag required)
1028: sub start_address {
1029: my ($target,$token) = @_;
1030: my $currentstring = '';
1031: if ($target eq 'web' || $target eq 'webgrade') {
1032: $currentstring .= $token->[4];
1033: } elsif ($target eq 'tex') {
1034: $currentstring .= '\textit{';
1035: }
1036: return $currentstring;
1037: }
1038:
1039: sub end_address {
1040: my ($target,$token) = @_;
1041: my $currentstring = '';
1042: if ($target eq 'web' || $target eq 'webgrade') {
1043: $currentstring .= $token->[2];
1044: } elsif ($target eq 'tex') {
1045: $currentstring .= '}';
1046: }
1047: return $currentstring;
1048: }
1049:
1050: #-- <dfn> tag (end tag required)
1051: sub start_dfn {
1052: my ($target,$token) = @_;
1053: my $currentstring = '';
1054: if ($target eq 'web' || $target eq 'webgrade') {
1055: $currentstring .= $token->[4];
1056: } elsif ($target eq 'tex') {
1057: $currentstring .= '\textit{';
1058: }
1059: return $currentstring;
1060: }
1061:
1062: sub end_dfn {
1063: my ($target,$token) = @_;
1064: my $currentstring = '';
1065: if ($target eq 'web' || $target eq 'webgrade') {
1066: $currentstring .= $token->[2];
1067: } elsif ($target eq 'tex') {
1068: $currentstring .= '}';
1069: }
1070: return $currentstring;
1071: }
1072:
1073: #-- <tt> tag (end tag required)
1074: sub start_tt {
1075: my ($target,$token) = @_;
1076: my $currentstring = '';
1077: if ($target eq 'web' || $target eq 'webgrade') {
1078: $currentstring .= $token->[4];
1079: } elsif ($target eq 'tex') {
1080: $currentstring .= '\texttt{';
1081: }
1082: return $currentstring;
1083: }
1084:
1085: sub end_tt {
1086: my ($target,$token) = @_;
1087: my $currentstring = '';
1088: if ($target eq 'web' || $target eq 'webgrade') {
1089: $currentstring .= $token->[2];
1090: } elsif ($target eq 'tex') {
1091: $currentstring .= '}';
1092: }
1093: return $currentstring;
1094: }
1095:
1096: #-- <kbd> tag (end tag required)
1097: sub start_kbd {
1098: my ($target,$token) = @_;
1099: my $currentstring = '';
1100: if ($target eq 'web' || $target eq 'webgrade') {
1101: $currentstring .= $token->[4];
1102: } elsif ($target eq 'tex') {
1103: $currentstring .= '\texttt{';
1104: }
1105: return $currentstring;
1106: }
1107:
1108: sub end_kbd {
1109: my ($target,$token) = @_;
1110: my $currentstring = '';
1111: if ($target eq 'web' || $target eq 'webgrade') {
1112: $currentstring .= $token->[2];
1113: } elsif ($target eq 'tex') {
1114: $currentstring .= '}';
1115: }
1116: return $currentstring;
1117: }
1118:
1119: #-- <code> tag (end tag required)
1120: sub start_code {
1121: my ($target,$token) = @_;
1122: my $currentstring = '';
1123: if ($target eq 'web' || $target eq 'webgrade') {
1124: $currentstring .= $token->[4];
1125: } elsif ($target eq 'tex') {
1126: $currentstring .= '\texttt{';
1127: }
1128: return $currentstring;
1129: }
1130:
1131: sub end_code {
1132: my ($target,$token) = @_;
1133: my $currentstring = '';
1134: if ($target eq 'web' || $target eq 'webgrade') {
1135: $currentstring .= $token->[2];
1136: } elsif ($target eq 'tex') {
1137: $currentstring .= '}';
1138: }
1139: return $currentstring;
1140: }
1141:
1142: #-- <em> tag (end tag required)
1143: sub start_em {
1144: my ($target,$token) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web' || $target eq 'webgrade') {
1147: $currentstring .= $token->[4];
1148: } elsif ($target eq 'tex') {
1149: $currentstring .= '\emph{';
1150: }
1151: return $currentstring;
1152: }
1153:
1154: sub end_em {
1155: my ($target,$token) = @_;
1156: my $currentstring = '';
1157: if ($target eq 'web' || $target eq 'webgrade') {
1158: $currentstring .= $token->[2];
1159: } elsif ($target eq 'tex') {
1160: $currentstring .= '}';
1161: }
1162: return $currentstring;
1163: }
1164:
1165: #-- <q> tag (end tag required)
1166: sub start_q {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web' || $target eq 'webgrade') {
1170: $currentstring .= $token->[4];
1171: } elsif ($target eq 'tex') {
1172: $currentstring .= '\emph{';
1173: }
1174: return $currentstring;
1175: }
1176:
1177: sub end_q {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= $token->[2];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '}';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: # <p> is a bit strange since it does not require a closing </p>
1189: # However in latex, we must often output closing stuff to end
1190: # environments and {}'s etc. Therefore we do all the work
1191: # of figuring out the ending strings in the start tag processing,
1192: # and provide a mechanism to output the stop text external
1193: # to tag processing.
1194: #
1195: {
1196:
1197: my $closing_string = ''; # String required to close <p>
1198:
1199: # Some tags are <p> fragile meaning that <p> inside of them
1200: # does not work within TeX mode. This is managed via the
1201: # counter below:
1202: #
1203:
1204: my $para_disabled = 0;
1205:
1206: sub disable_para {
1207: $para_disabled++;
1208: }
1209: sub enable_para {
1210: $para_disabled--;
1211: }
1212:
1213:
1214: #-- <p> tag (end tag optional)
1215: #optional attribute - align="center|left|right"
1216: sub start_p {
1217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1218: my $currentstring = '';
1219: if ($target eq 'web' || $target eq 'webgrade') {
1220: $currentstring .= &end_p(); # close off prior para if in progress.
1221: $currentstring .= $token->[4];
1222: if (! ($currentstring =~ /\//)) {
1223: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1224: }
1225: } elsif ($target eq 'tex' && !$para_disabled) {
1226:
1227: $currentstring .= &end_p(); # close off prior para if in progress.
1228: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1229: if ($align eq 'center') {
1230: $currentstring .='\begin{center}\par ';
1231: $closing_string = '\end{center}';
1232: if (&is_inside_of($tagstack, "table")) {
1233: $currentstring = ¢er_correction().$currentstring;
1234: }
1235: } elsif ($align eq 'right') {
1236: $currentstring.="\n".'{\flushright ';
1237: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1238: $closing_string= "}\n";
1239: } elsif ($align eq 'left') {
1240: $currentstring.= "\n".'{\flushleft ';
1241: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1242: $closing_string = "}\n";
1243: } else {
1244: $currentstring.='\par ';
1245: if (&is_inside_of($tagstack, 'table')) {
1246: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1247: } else {
1248: $closing_string = '\strut\\\\\strut ';
1249: }
1250: }
1251:
1252: }
1253: return $currentstring;
1254: }
1255: #
1256: # End paragraph processing just requires that we output the
1257: # closing string that was saved and blank it.
1258: sub end_p {
1259: # Note only 'tex' mode uses disable_para and enable_para
1260: # so we don't need to know the target in the check below:
1261:
1262: if (!$para_disabled) {
1263: my $current_string = $closing_string;
1264: $closing_string = ''; # Not in a para anymore.
1265: return $current_string;
1266: } else {
1267: return '';
1268: }
1269:
1270: }
1271: }
1272: #-- <br> tag (end tag forbidden)
1273: sub start_br {
1274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1275: my $currentstring = '';
1276: if ($target eq 'web' || $target eq 'webgrade') {
1277: $currentstring .= $token->[4];
1278: } elsif ($target eq 'tex') {
1279: my @tempo=@$tagstack;
1280: my $signal=0;
1281: # Not going to factor this to is_inside_of since that would require
1282: # multiple stack traversals.
1283: #
1284: for (my $i=$#tempo;$i>=0;$i--) {
1285: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1286: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1287: $signal=1;
1288: }
1289: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1290: $signal = 1;
1291: }
1292: }
1293: if ($signal != 1) {
1294: $currentstring .= '\strut \\\\ \strut ';
1295: }
1296:
1297: }
1298: return $currentstring;
1299: }
1300:
1301: sub end_br {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web' || $target eq 'webgrade') {
1305: $currentstring .= $token->[2];
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <big> tag (end tag required)
1311: sub start_big {
1312: my ($target,$token) = @_;
1313: my $currentstring = '';
1314: if ($target eq 'web' || $target eq 'webgrade') {
1315: $currentstring .= $token->[4];
1316: } elsif ($target eq 'tex') {
1317: $currentstring .= '{\large ';
1318: }
1319: return $currentstring;
1320: }
1321:
1322: sub end_big {
1323: my ($target,$token) = @_;
1324: my $currentstring = '';
1325: if ($target eq 'web' || $target eq 'webgrade') {
1326: $currentstring .= $token->[2];
1327: } elsif ($target eq 'tex') {
1328: $currentstring .= '}';
1329: }
1330: return $currentstring;
1331: }
1332:
1333: #-- <small> tag (end tag required)
1334: sub start_small {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web' || $target eq 'webgrade') {
1338: $currentstring .= $token->[4];
1339: } elsif ($target eq 'tex') {
1340: $currentstring .= '{\footnotesize ';
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_small {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web' || $target eq 'webgrade') {
1349: $currentstring .= $token->[2];
1350: } elsif ($target eq 'tex') {
1351: $currentstring .= '}';
1352: }
1353: return $currentstring;
1354: }
1355:
1356: #-- <basefont> tag (end tag forbidden)
1357: sub start_basefont {
1358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1359: my $currentstring = '';
1360: if ($target eq 'web' || $target eq 'webgrade') {
1361: $currentstring = $token->[4];
1362: } elsif ($target eq 'tex') {
1363: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1364: if (defined $basesize) {
1365: $currentstring = '{\\'.$basesize.' ';
1366: }
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_basefont {
1372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web' || $target eq 'webgrade') {
1375: $currentstring = $token->[4];
1376: } elsif ($target eq 'tex') {
1377: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1378: if (defined $basesize) {
1379: $currentstring = '}';
1380: }
1381: }
1382: return $currentstring;
1383: }
1384:
1385: #-- <font> tag (end tag required)
1386: sub start_font {
1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1388: my $currentstring = '';
1389: if ($target eq 'web' || $target eq 'webgrade') {
1390: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1391: if ($face!~/symbol/i) {
1392: if (($env{'browser.fontenhance'} eq 'on') ||
1393: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1394: }
1395: $currentstring = $token->[4];
1396: } elsif ($target eq 'tex') {
1397: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1398: if (defined $fontsize) {
1399: $currentstring = '{\\'.$fontsize.' ';
1400: }
1401: }
1402: return $currentstring;
1403: }
1404:
1405: sub end_font {
1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1407: my $currentstring = '';
1408: if ($target eq 'web' || $target eq 'webgrade') {
1409: $currentstring = $token->[2];
1410: } elsif ($target eq 'tex') {
1411: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1412: if (defined $fontsize) {
1413: $currentstring = '}';
1414: }
1415: }
1416: return $currentstring;
1417: }
1418:
1419: #-- <strike> tag (end tag required)
1420: sub start_strike {
1421: my ($target,$token) = @_;
1422: my $currentstring = '';
1423: if ($target eq 'web' || $target eq 'webgrade') {
1424: $currentstring .= $token->[4];
1425: } elsif ($target eq 'tex') {
1426: &Apache::lonxml::startredirection();
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_strike {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web' || $target eq 'webgrade') {
1435: $currentstring .= $token->[2];
1436: } elsif ($target eq 'tex') {
1437: $currentstring=&Apache::lonxml::endredirection();
1438: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1439: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1440: $currentstring=~s/(\S)\s*$/$1\}/;
1441: }
1442: return $currentstring;
1443: }
1444:
1445: #-- <s> tag (end tag required)
1446: sub start_s {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web' || $target eq 'webgrade') {
1450: $currentstring .= $token->[4];
1451: } elsif ($target eq 'tex') {
1452: &Apache::lonxml::startredirection();
1453: }
1454: return $currentstring;
1455: }
1456:
1457: sub end_s {
1458: my ($target,$token) = @_;
1459: my $currentstring = '';
1460: if ($target eq 'web' || $target eq 'webgrade') {
1461: $currentstring .= $token->[2];
1462: } elsif ($target eq 'tex') {
1463: $currentstring=&Apache::lonxml::endredirection();
1464: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1465: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1466: $currentstring=~s/(\S)\s*$/$1\}/;
1467: }
1468: return $currentstring;
1469: }
1470:
1471: #-- <sub> tag (end tag required)
1472: sub start_sub {
1473: my ($target,$token) = @_;
1474: my $currentstring = '';
1475: if ($target eq 'web' || $target eq 'webgrade') {
1476: $currentstring .= $token->[4];
1477: } elsif ($target eq 'tex') {
1478: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_sub {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web' || $target eq 'webgrade') {
1487: $currentstring .= $token->[2];
1488: } elsif ($target eq 'tex') {
1489: $currentstring .= '}}';
1490: }
1491: return $currentstring;
1492: }
1493:
1494: #-- <sup> tag (end tag required)
1495: sub start_sup {
1496: my ($target,$token) = @_;
1497: my $currentstring = '';
1498: if ($target eq 'web' || $target eq 'webgrade') {
1499: $currentstring .= $token->[4];
1500: } elsif ($target eq 'tex') {
1501: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1502: }
1503: return $currentstring;
1504: }
1505:
1506: sub end_sup {
1507: my ($target,$token) = @_;
1508: my $currentstring = '';
1509: if ($target eq 'web' || $target eq 'webgrade') {
1510: $currentstring .= $token->[2];
1511: } elsif ($target eq 'tex') {
1512: $currentstring .= '}}';
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <hr> tag (end tag forbidden)
1518: sub start_hr {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = &end_p(); # End enclosing para.
1521: if ($target eq 'web' || $target eq 'webgrade') {
1522: $currentstring .= $token->[4];
1523: } elsif ($target eq 'tex') {
1524:
1525: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1526: #
1527: my $restart_sub = 0;
1528: my $restart_sup = 0;
1529:
1530: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1531: # using the start_ stop_ functions.. those tags only care about
1532: # $target.
1533:
1534: if (&is_inside_of($tagstack, "sub")) {
1535: $restart_sub = 1;
1536: $currentstring .= &end_sub($target, $token, $tagstack,
1537: $parstack, $parser, $safeeval);
1538: }
1539: if (&is_inside_of($tagstack, "sup")) {
1540: $restart_sup = 1;
1541: $currentstring .= &end_sup($target, $token, $tagstack,
1542: $parstack, $parser, $safeeval);
1543: }
1544:
1545: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1546: if (defined $LaTeXwidth) {
1547: if ($LaTeXwidth=~/^%/) {
1548: substr($LaTeXwidth,0,1)='';
1549: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1550: }
1551: } else {
1552: $LaTeXwidth ='0.9\textwidth';
1553: }
1554: my ($pre,$post);
1555: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1556: if (($align eq 'center') || (not defined $align)) {
1557: $pre=''; $post='';
1558: } elsif ($align eq 'left') {
1559: $pre='\rlap{'; $post='} \hfill';
1560: } elsif ($align eq 'right') {
1561: $pre=' \hfill \llap{'; $post='}';
1562: }
1563: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1564: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1565: # Turn stuff back on that we can't be inside of.
1566:
1567: if ($restart_sub) {
1568: $currentstring .= &start_sub($target, $token, $tagstack,
1569: $parstack, $parser, $safeeval);
1570: }
1571: if ($restart_sup) {
1572: $currentstring .= &start_sup($target, $token, $tagstack,
1573: $parstack, $parser, $safeeval);
1574: }
1575: }
1576: return $currentstring;
1577: }
1578:
1579: sub end_hr {
1580: my ($target,$token) = @_;
1581: my $currentstring = '';
1582: if ($target eq 'web' || $target eq 'webgrade') {
1583: $currentstring .= $token->[2];
1584: }
1585: return $currentstring;
1586: }
1587:
1588: #-- <div> tag (end tag required)
1589: {
1590:
1591: # Since div can be nested, the stack below is used
1592: # in 'tex' mode to store the ending strings
1593: # for the div stack.
1594:
1595: my @div_end_stack;
1596:
1597: sub start_div {
1598: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1599: my $currentstring = &end_p(); # Close enclosing para.
1600: if ($target eq 'web' || $target eq 'webgrade') {
1601: $currentstring .= $token->[4];
1602: }
1603: if ($target eq 'tex') {
1604: # 4 possible alignments: left, right, center, and -missing-.
1605: # If inside a table row, we must let the table logic
1606: # do the alignment, however.
1607: #
1608:
1609: my $endstring = '';
1610:
1611: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1612: $safeeval, undef, 1));
1613: if ($align eq 'center') {
1614: $currentstring .= '\begin{center}';
1615: $endstring = '\end{center}';
1616: if (&is_inside_of($tagstack, "table")) {
1617: $currentstring = ¢er_correction().$currentstring;
1618: $endstring .= ¢er_end_correction();
1619: }
1620: }
1621: elsif ($align eq 'right') {
1622: $currentstring .= '\begin{flushright}';
1623: $endstring .= '\end{flushright}';
1624: } elsif ($align eq 'left') {
1625: $currentstring .= '\begin{flushleft}';
1626: $endstring = '\end{flushleft}';
1627: } else {
1628:
1629: }
1630: $currentstring .= "\n"; # For human readability.
1631: $endstring = "\n$endstring\n"; # For human readability
1632: push(@div_end_stack, $endstring);
1633: }
1634: return $currentstring;
1635: }
1636:
1637: sub end_div {
1638: my ($target,$token) = @_;
1639: my $currentstring = '';
1640: if ($target eq 'web' || $target eq 'webgrade') {
1641: $currentstring .= $token->[2];
1642: }
1643: if ($target eq 'tex') {
1644: my $endstring = pop @div_end_stack;
1645: $currentstring .= $endstring;
1646: }
1647: return $currentstring;
1648: }
1649: }
1650:
1651: #-- <a> tag (end tag required)
1652: sub start_a {
1653: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1654: my $currentstring = '';
1655: if ($target eq 'web' || $target eq 'webgrade') {
1656: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1657: undef,1);
1658: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1659: }
1660: return $currentstring;
1661: }
1662:
1663: sub end_a {
1664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1665: my $currentstring = '';
1666: if ($target eq 'web' || $target eq 'webgrade') {
1667: $currentstring .= $token->[2];
1668: }
1669: if ($target eq 'tex') {
1670: my $href =
1671: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1672: my $name =
1673: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1674: my $uriprint =
1675: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1676: my $anchorprint =
1677: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1678: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1679: $href =~ s/([^\\])%/$1\\\%/g;
1680: # Substitute special symbols... and allow line breaks at each /
1681: #
1682: $href = &Apache::lonxml::latex_special_symbols($href);
1683: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1684: $currentstring .= ' ({\tt URI:'.$href.'})';
1685: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1686: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1687: } else {
1688: $currentstring.='';
1689: }
1690: }
1691: return $currentstring;
1692: }
1693:
1694: #-- <li> tag (end tag optional)
1695: sub start_li {
1696: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1697: my $currentstring = '';
1698: if ($target eq 'web' || $target eq 'webgrade') {
1699: $currentstring = $token->[4];
1700: } elsif ($target eq 'tex') {
1701: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1702: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1703: #FIXME need to support types i and I
1704: if ($type=~/disc/) {
1705: $currentstring .= ' \item[$\bullet$] ';
1706: } elsif ($type=~/circle/) {
1707: $currentstring .= ' \item[$\circ$] ';
1708: } elsif ($type=~/square/) {
1709: $currentstring .= ' \item[$\diamond$] ';
1710: } elsif ($type eq '1') {
1711: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1712: } elsif ($type eq 'A') {
1713: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1714: } elsif ($type eq 'a') {
1715: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1716: } elsif ($value ne '') {
1717: $currentstring .= ' \item['.$value.'] ';
1718: } else {
1719: $currentstring .= ' \item ';
1720: }
1721: $Apache::londefdef::list_index++;
1722: }
1723: return $currentstring;
1724: }
1725:
1726: sub end_li {
1727: my ($target,$token) = @_;
1728: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1729: if ($target eq 'web' || $target eq 'webgrade') {
1730: $currentstring .= $token->[2];
1731: }
1732: return $currentstring;
1733: }
1734:
1735: #-- <u> tag (end tag required)
1736: sub start_u {
1737: my ($target,$token) = @_;
1738: my $currentstring = '';
1739: if ($target eq 'web' || $target eq 'webgrade') {
1740: $currentstring .= $token->[4];
1741: } elsif ($target eq 'tex') {
1742: &Apache::lonxml::startredirection();
1743: }
1744: return $currentstring;
1745: }
1746:
1747: sub end_u {
1748: my ($target,$token) = @_;
1749: my $currentstring = '';
1750: if ($target eq 'web' || $target eq 'webgrade') {
1751: $currentstring .= $token->[2];
1752: } elsif ($target eq 'tex') {
1753: $currentstring=&Apache::lonxml::endredirection();
1754: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1755: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1756: $currentstring=~s/(\S)\s*$/$1\}/;
1757: }
1758: return $currentstring;
1759: }
1760:
1761: #-- <ul> tag (end tag required)
1762: sub start_ul {
1763: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1764: my $currentstring = &end_p(); # Close off enclosing list.
1765: if ($target eq 'web' || $target eq 'webgrade') {
1766: $currentstring .= $token->[4];
1767: } elsif ($target eq 'tex') {
1768: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1769: $Apache::londefdef::list_index=0;
1770: if ($TeXtype eq 'disc') {
1771: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1772: '\renewcommand{\labelitemii}{$\bullet$}'.
1773: '\renewcommand{\labelitemiii}{$\bullet$}'.
1774: '\renewcommand{\labelitemiv}{$\bullet$}';
1775: } elsif ($TeXtype eq 'circle') {
1776: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1777: '\renewcommand{\labelitemii}{$\circ$}'.
1778: '\renewcommand{\labelitemiii}{$\circ$}'.
1779: '\renewcommand{\labelitemiv}{$\circ$}';
1780: } elsif ($TeXtype eq 'square') {
1781: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1782: '\renewcommand{\labelitemii}{$\diamond$}'.
1783: '\renewcommand{\labelitemiii}{$\diamond$}'.
1784: '\renewcommand{\labelitemiv}{$\diamond$}';
1785: }
1786: $currentstring .= '\strut \begin{itemize}';
1787: }
1788: return $currentstring;
1789: }
1790:
1791: sub end_ul {
1792: my ($target,$token) = @_;
1793: my $currentstring = '';
1794: if ($target eq 'web' || $target eq 'webgrade') {
1795: $currentstring = $token->[2];
1796: } elsif ($target eq 'tex') {
1797: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1798: '\renewcommand{\labelitemii}{$\bullet$}'.
1799: '\renewcommand{\labelitemiii}{$\bullet$}'.
1800: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1801: }
1802: return $currentstring;
1803: }
1804:
1805: #-- <menu> tag (end tag required)
1806: sub start_menu {
1807: my ($target,$token) = @_;
1808: my $currentstring = '';
1809: if ($target eq 'web' || $target eq 'webgrade') {
1810: $currentstring = $token->[4];
1811: } elsif ($target eq 'tex') {
1812: $currentstring = " \\begin{itemize} ";
1813: }
1814: return $currentstring;
1815: }
1816:
1817: sub end_menu {
1818: my ($target,$token) = @_;
1819: my $currentstring = '';
1820: if ($target eq 'web' || $target eq 'webgrade') {
1821: $currentstring = $token->[2];
1822: } elsif ($target eq 'tex') {
1823: $currentstring = " \\end{itemize}";
1824: }
1825: return $currentstring;
1826: }
1827:
1828: #-- <dir> tag (end tag required)
1829: sub start_dir {
1830: my ($target,$token) = @_;
1831: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1832: if ($target eq 'web' || $target eq 'webgrade') {
1833: $currentstring .= $token->[4];
1834: } elsif ($target eq 'tex') {
1835: $currentstring .= " \\begin{itemize} ";
1836: }
1837: return $currentstring;
1838: }
1839:
1840: sub end_dir {
1841: my ($target,$token) = @_;
1842: my $currentstring = '';
1843: if ($target eq 'web' || $target eq 'webgrade') {
1844: $currentstring = $token->[2];
1845: } elsif ($target eq 'tex') {
1846: $currentstring = " \\end{itemize}";
1847: }
1848: return $currentstring;
1849: }
1850:
1851: #-- <ol> tag (end tag required)
1852: sub start_ol {
1853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1854: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1855: if ($target eq 'web' || $target eq 'webgrade') {
1856: $currentstring .= $token->[4];
1857: } elsif ($target eq 'tex') {
1858: $Apache::londefdef::list_index=0;
1859: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1860: if ($type eq '1') {
1861: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1862: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1863: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1864: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1865: } elsif ($type eq 'A') {
1866: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1867: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1868: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1869: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1870: } elsif ($type eq 'a') {
1871: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1872: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1873: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1874: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1875: } elsif ($type eq 'i') {
1876: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1877: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1878: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1879: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1880: } elsif ($type eq 'I') {
1881: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1882: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1883: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1884: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1885: }
1886: $currentstring .= '\strut \begin{enumerate}';
1887: }
1888: return $currentstring;
1889: }
1890:
1891: sub end_ol {
1892: my ($target,$token) = @_;
1893: my $currentstring = '';
1894: if ($target eq 'web' || $target eq 'webgrade') {
1895: $currentstring = $token->[2];
1896: } elsif ($target eq 'tex') {
1897: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1898: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1899: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1900: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1901: }
1902: return $currentstring;
1903: }
1904:
1905: #-- <dl> tag (end tag required)
1906: sub start_dl {
1907: my ($target,$token) = @_;
1908: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1909: if ($target eq 'web' || $target eq 'webgrade') {
1910: $currentstring .= $token->[4];
1911: } elsif ($target eq 'tex') {
1912: $currentstring .= '\begin{description}';
1913: $Apache::londefdef::DL++;
1914: push(@Apache::londefdef::description,[]);
1915: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1916: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1917: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1918: }
1919: return $currentstring;
1920: }
1921:
1922: sub end_dl {
1923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1924: my $currentstring = '';
1925: if ($target eq 'web' || $target eq 'webgrade') {
1926: $currentstring = $token->[2];
1927: } elsif ($target eq 'tex') {
1928: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1929: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1930: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1931: $currentstring.=' '.$element.' ';
1932: }
1933: pop(@Apache::londefdef::description);
1934: $currentstring.='\end{description}';
1935: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1936: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1937: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1938: $Apache::londefdef::DL--;
1939: }
1940: return $currentstring;
1941: }
1942:
1943: #-- <dt> tag (end tag optional)
1944: sub start_dt {
1945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1946: my $currentstring='';
1947: if ($target eq 'web' || $target eq 'webgrade') {
1948: $currentstring = $token->[4];
1949: } elsif ($target eq 'tex') {
1950: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1951: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1952: &Apache::lonxml::startredirection();
1953: $Apache::londefdef::DT[-1]++;
1954: $Apache::londefdef::seenDT[-1]=1;
1955: }
1956: return $currentstring;
1957: }
1958:
1959: sub end_dt {
1960: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1961: my $currentstring = '';
1962: if ($target eq 'web' || $target eq 'webgrade') {
1963: $currentstring = $token->[2];
1964: } elsif ($target eq 'tex') {
1965: if ($Apache::londefdef::DT[-1]) {
1966: my $data=&item_cleanup();
1967: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1968: $Apache::londefdef::DT[-1]--;
1969: }
1970: }
1971: return $currentstring;
1972: }
1973:
1974: sub item_cleanup {
1975: my $item=&Apache::lonxml::endredirection();
1976: $item=~s/\\begin{center}//g;
1977: $item=~s/\\end{center}//g;
1978: return $item;
1979: }
1980:
1981: #-- <dd> tag (end tag optional)
1982: sub start_dd {
1983: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1984: my $currentstring = '';
1985: if ($target eq 'web' || $target eq 'webgrade') {
1986: $currentstring = $token->[4];
1987: } elsif ($target eq 'tex') {
1988: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1989: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1990: if (!$Apache::londefdef::seenDT[-1]) {
1991: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1992: }
1993: push(@{$Apache::londefdef::description[-1]},'');
1994: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1995: $Apache::londefdef::DD[-1]++;
1996: &Apache::lonxml::startredirection();
1997: }
1998: return $currentstring;
1999: }
2000:
2001: sub end_dd {
2002: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2003: my $currentstring = '';
2004: if ($target eq 'web' || $target eq 'webgrade') {
2005: $currentstring = $token->[2];
2006: } elsif ($target eq 'tex') {
2007: $Apache::londefdef::description[-1]->[-1].=
2008: &Apache::lonxml::endredirection().' \vskip 0mm ';
2009: $Apache::londefdef::DD[-1]--;
2010: }
2011: return $currentstring;
2012: }
2013:
2014: #-- <table> tag (end tag required)
2015: # <table> also ends any prior <p> that is not closed.
2016: # but, unless I allow <p>'s to nest, that's the
2017: # only way I could think of to allow <p> in
2018: # <tr> <th> bodies
2019: #
2020: #list of supported attributes: border,width,TeXwidth
2021: sub start_table {
2022: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2023: my $textwidth = '';
2024: my $currentstring = &end_p();
2025: if ($target eq 'web' || $target eq 'webgrade') {
2026: $currentstring .= $token->[4];
2027: } elsif ($target eq 'tex') {
2028: push(@Apache::londefdef::table, {});
2029: $Apache::londefdef::table[-1]{'row_number'} = -1;
2030: #maximum table's width (default coincides with text line length)
2031: if ($#Apache::londefdef::table==0) {
2032: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2033: $textwidth=~/(\d+\.?\d*)/;
2034: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2035: } else {
2036: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2037: #the maximum width of nested table is determined by LATeX width of parent cell
2038: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2039: } else {
2040: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2041: $textwidth=$Apache::londefdef::table[-2]{'width'};
2042: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2043: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2044: }
2045: }
2046: }
2047:
2048: # width either comes forced from the TeXwidth or the width parameters.
2049: # in either case it can be a percentage or absolute width.
2050: # in the width case we ignore absolute width
2051: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2052: if (!defined($TeXwidth)) {
2053: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2054: $safeeval,undef,1);
2055: if ($htmlwidth =~ /%/) {
2056: $TeXwidth = $htmlwidth;
2057: } else {
2058: $TeXwidth = $textwidth;
2059: }
2060: }
2061: # if the width is specified as a % it is converted to an absolute width.
2062: # otherwise.. just plugged right in the hash
2063:
2064: if ($TeXwidth=~/%/) {
2065: $TeXwidth=~/(\d+)/;
2066: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2067: } else {
2068: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2069: }
2070: # In the end, however the table width cannot be wider than $textwidth...
2071:
2072: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2073: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2074: }
2075: #table's border
2076: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2077: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2078: unless (defined $border) { $border = 0; }
2079: if ($border) {
2080: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2081: $Apache::londefdef::table[-1]{'vinc'} = '&';
2082: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2083: } else {
2084: $Apache::londefdef::table[-1]{'hinc'} = '';
2085: $Apache::londefdef::table[-1]{'vinc'} = '&';
2086: $Apache::londefdef::table[-1]{'vvinc'} = '';
2087: }
2088: if ($#Apache::londefdef::table==0) {
2089: # Note that \newline seems to destroy the alignment envs.
2090: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2091: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2092: }
2093: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2094: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2095: $Apache::londefdef::table[-1]{'objectlen'}=[];
2096: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2097: $Apache::londefdef::table[-1]{'maxlen'}=[];
2098: $Apache::londefdef::table[-1]{'minlen'}=[];
2099: $Apache::londefdef::table[-1]{'content'}=[];
2100: $Apache::londefdef::table[-1]{'align'}=[];
2101: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2102:
2103:
2104: }
2105: return $currentstring;
2106: }
2107:
2108: sub end_table {
2109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2110: my $currentstring = '';
2111: if ($target eq 'web' || $target eq 'webgrade') {
2112: $currentstring = $token->[2];
2113: } elsif ($target eq 'tex') {
2114: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2115: my $inmemory = '';
2116: my $output = '';
2117: my $WARNING='';
2118: #width of columns from TeXwidth attributes
2119:
2120: # Protect against unbalanced </table> tag.
2121:
2122: if (scalar(@Apache::londefdef::table) > 0) {
2123:
2124: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2125: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2126: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2127: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2128: }
2129: }
2130: }
2131: #free space and number of empty columns
2132: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2133: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2134: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2135: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2136: $empty_columns++;
2137: } else {
2138: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2139: }
2140: }
2141:
2142: #boundaries for contents columns
2143: my @min_len=();#columns can not be narrower
2144: my @max_len=();#maximum length of column
2145: my $avg_max;
2146: my $avg_min;
2147: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2148: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2149: my ($localmin,$localmax)=(0,0);
2150: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2151: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2152: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2153: }
2154: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2155: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2156: }
2157: }
2158: push @min_len, $localmin;
2159: push @max_len, $localmax;
2160: $avg_max = $localmax + $avg_max;
2161: $avg_min = $localmin + $avg_min;
2162: }
2163: # Does not really matter what the average max/min are if there are no cols.
2164: # and this prevents div 0 in that case.
2165:
2166: if ($counter_cols != 0) {
2167: $avg_max = $avg_max/$counter_cols;
2168: $avg_min = $avg_min/$counter_cols;
2169: }
2170:
2171:
2172: # I don't think the below is needed.. but just in case:
2173:
2174: if ($avg_min > $avg_max) {
2175: my $temp = $avg_min;
2176: $avg_min = $avg_max;
2177: $avg_max = $temp;
2178: }
2179:
2180:
2181: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2182: my $localmin=0,;
2183: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2184: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2185: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2186: }
2187: }
2188: if ($max_len[$jn]<$localmin) {
2189: $max_len[$jn]=$localmin;
2190: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2191: }#object size is bigger
2192: if ($min_len[$jn]<$localmin) {
2193: $min_len[$jn]=$localmin;
2194: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2195: }#object size is bigger
2196: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2197: $min_len[$jn]=0;
2198: $max_len[$jn]=0;
2199: }
2200: # Spans seem to be really bothered by max/min = 0. So if we have one
2201: # make it an average joe max/min.
2202:
2203: if ($max_len[$jn] == 0) {
2204: $max_len[$jn] = $avg_max;
2205: }
2206: if ($min_len[$jn] == 0) {
2207: $min_len[$jn] = $avg_min;
2208: }
2209:
2210: }
2211: #final adjustment of column width
2212: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2213: my @adjust=();
2214: #step 1. adjustment by maximum value
2215: my $space_needed=0;
2216: for (my $jn=0;$jn<=$#max_len;$jn++) {
2217: $space_needed=$space_needed+$max_len[$jn];
2218: }
2219: if ($space_needed<=$available_space) {
2220:
2221: for (my $jn=0;$jn<=$#max_len;$jn++) {
2222: if ($fwidth[$jn]==0) {
2223: $fwidth[$jn]=$max_len[$jn];
2224: }
2225: }
2226: } else {
2227: #step 2. adjustment by minimum value (estimation)
2228: $space_needed=0;
2229: for (my $jn=0;$jn<=$#min_len;$jn++) {
2230: $space_needed+=$min_len[$jn];
2231: }
2232: if ($space_needed>$available_space) {
2233: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2234: for (my $jn=0;$jn<=$#max_len;$jn++) {
2235: if ($fwidth[$jn]==0) {
2236: $fwidth[$jn]=$min_len[$jn];
2237: }
2238: }
2239: #check if we have objects which can be scaled
2240: my $how_many_to_scale=0;
2241: my @to_scale=();
2242: for (my $jn=0;$jn<=$#max_len;$jn++) {
2243: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2244: $how_many_to_scale++;
2245: push @to_scale, $jn;
2246: }
2247: }
2248: if ($how_many_to_scale>0) {
2249: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2250: foreach my $jn (@to_scale) {
2251: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2252: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2253: if ($1 ne '') {
2254: my $current_length=&recalc($1);
2255: $current_length=~/(\d+\.?\d*)/;
2256: $current_length=$current_length-$space_to_adjust;
2257: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2258: }
2259: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2260: if ($1 ne '') {
2261: my $current_length=$1;
2262: $current_length=$current_length-$space_to_adjust;
2263: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2264: }
2265: }
2266: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2267: }
2268: }
2269: } else {
2270: #step 3. adjustment over minimal + corrections
2271: my $enlarge_coef=$available_space/$space_needed;
2272: my $acsessive=0;
2273: for (my $jn=0;$jn<=$#min_len;$jn++) {
2274: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2275: if ($adjust[$jn]>$max_len[$jn]) {
2276: $fwidth[$jn]=$max_len[$jn];
2277: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2278: $adjust[$jn]=0;
2279:
2280: }
2281: }
2282: if ($acsessive>0) {
2283: #we have an excess of space and can redistribute it
2284: my $notempty_columns=0;
2285: for (my $jn=0;$jn<=$#min_len;$jn++) {
2286: if ($adjust[$jn]!=0) {
2287: $notempty_columns++;
2288: }
2289: }
2290: my $per_column=$acsessive/$notempty_columns;
2291: for (my $jn=0;$jn<=$#min_len;$jn++) {
2292: if ($adjust[$jn]!=0) {
2293: $adjust[$jn]+=$per_column;
2294: $fwidth[$jn]=$adjust[$jn];
2295: }
2296: }
2297: } else {
2298: for (my $jn=0;$jn<=$#min_len;$jn++) {
2299: $fwidth[$jn]=$adjust[$jn];
2300: }
2301: }
2302: }
2303: }
2304: # use all available width or specified width as if not specified,
2305: # the specified width gets defaulted to the available width.
2306:
2307: my $current=0;
2308: for (my $i=0;$i<=$#fwidth;$i++) {
2309: $current+=$fwidth[$i];
2310: }
2311: if ($current == 0) {
2312: $current = $Apache::londefdef::table[-1]{'width'};
2313: }
2314: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2315: for (my $i=0;$i<=$#fwidth;$i++) {
2316: $fwidth[$i]*=$coef;
2317: }
2318: #removing of empty columns if allowed
2319: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2320: if ($permission eq 'yes') {
2321: my @cleaned_table=();
2322: my @cleaned_header=();
2323: my $colind=0;
2324: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2325: if ($fwidth[$jn]!=0) {
2326: #we need to copy column
2327: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2328: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2329: $cleaned_header[$colind]=$fwidth[$jn];
2330: }
2331: $colind++;
2332: }
2333: }
2334: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2335: @fwidth=@cleaned_header;
2336: }
2337:
2338:
2339: #construct header of the table
2340: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2341: for (my $in=0;$in<=$#fwidth;$in++) {
2342: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2343: }
2344: $header_of_table .= '}';
2345:
2346: #fill the table
2347: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2348: my $have_rowspan = 0;
2349: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2350:
2351: #-----------------------------------------------------------
2352: # I think this order of doing things will ensure that
2353: # single rowspan, columspan and combined row/colspans will
2354: # work correctly. LaTeX is delicate here.
2355: # RF.
2356:
2357: # Start a rowspan if necessary:
2358:
2359: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2360: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2361: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2362: #
2363: # Do the appropriate magic if this has a colspan
2364: #
2365:
2366: my $border_char = "";
2367: if ($border) {
2368: $border_char = "|";
2369: }
2370: my $spanwidth = 0;
2371: if ($colspan > 1) {
2372: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2373: $spanwidth += $fwidth[$spancol];
2374: }
2375: $output .= '\multicolumn{'.
2376: $colspan
2377: ."}";
2378: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2379: $output .= '{'.$border_char.'c'.$border_char.'}{';
2380: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2381: $output .= '{'.$border_char.'r'.$border_char.'}{';
2382: }
2383: else {
2384: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2385: }
2386:
2387: } else {
2388: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2389: }
2390:
2391: # Rowspan... if colspan is 1, and there's an alignment we'll need
2392: # to kick in a multicolumn in order to get the alignment spec.
2393: # this must precede the multirow or LaTex gets quite upset.
2394: # Naturally if colspan > 1 we've already done that above ^
2395: #
2396: my $multirow_aligned = 0;
2397: if ($rowspan > 1) {
2398: if ($colspan == 1) {
2399: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2400: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2401: $multirow_aligned = 1;
2402: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2403: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2404: $multirow_aligned = 1;
2405: }
2406: }
2407: $have_rowspan++;
2408: if ($multirow_aligned) {
2409: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2410: } else {
2411: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2412: }
2413:
2414: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2415: s{^\s*\\par\s*}{};
2416: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2417: s{\s*\\vskip\s*0pt\s*$}{};
2418:
2419: #
2420: # If we did not throw in a multicolumn to align, then add
2421: # an extra {
2422: # so we close correctly without having to keep additional state
2423: # around
2424: #
2425: if (!$multirow_aligned) {
2426: $output .= '{';
2427: }
2428: }
2429: if (($rowspan eq '^') || ($rowspan eq '_')) {
2430: $have_rowspan++;
2431: }
2432: #--------------------------------------------------------------
2433:
2434:
2435: # For right and center alignment of single cells.
2436: # we are going to use a multicolumn with a span of 1 to specify alignment.
2437: #
2438: if ($colspan == 1 && $rowspan == 1) {
2439: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2440: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2441: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2442: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2443: }
2444: }
2445:
2446: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2447:
2448: if (($colspan == 1 && $rowspan == 1) &&
2449: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2450: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2451: $output .= '}';
2452: }
2453:
2454: # Close off any open multirow:
2455:
2456: if ($rowspan > 1) {
2457: $output .= '}}';
2458: }
2459: # Close off the colspan...
2460: #
2461: if ($colspan > 1) {
2462: $output .= '}';
2463: $jn += $colspan-1; # Adjust for number of rows really left.
2464: }
2465: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2466: }
2467: # If have_rowspan > 0, and borders are on, then
2468: # we need to do more than put an \hline at the bottom of row.
2469: # we need to do the appropriate \cline to ensure that
2470: # the spanned rows don't have \hlines through them.
2471:
2472: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2473: $output .= ' \\\\ ';
2474: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2475: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2476: if ($rowspan ne "^") {
2477: if (($rowspan <= 1) || ($rowspan eq '_')) {
2478: my $column = $jn+1;
2479: $output .= '\cline{'.$column.'-'.$column.'} ';
2480: }
2481: }
2482: }
2483:
2484: } else {
2485: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2486: }
2487: }
2488: # Note that \newline destroys alignment env's produced by e.g. <div>
2489: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2490: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2491: if ($#Apache::londefdef::table > 0) {
2492: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2493: # Figure out max/and min width by summing us and then
2494: # apply that to the current column of the table we nest in
2495: # if it's larger than the current width or the current width
2496: # is undefined.
2497: #
2498: my $min_nested_width = 0;
2499: my $max_nested_width = 0;
2500: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2501: $min_nested_width += $min_len[$col];
2502: $max_nested_width += $max_len[$col];
2503:
2504: }
2505: # Fudge in an extra 5 mm for borders etc:
2506:
2507: $min_nested_width += 5;
2508: $max_nested_width += 5;
2509:
2510: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2511: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2512: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2513: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2514: }
2515: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2516: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2517: }
2518:
2519: pop @Apache::londefdef::table;
2520: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2521: } else {
2522: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2523: pop @Apache::londefdef::table;
2524: undef @Apache::londefdef::table;
2525: }
2526: }
2527: }
2528: return $currentstring;
2529: }
2530:
2531: #-- <tr> tag (end tag optional)
2532: sub start_tr {
2533: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2534: my $currentstring = '';
2535: if ($target eq 'web' || $target eq 'webgrade') {
2536: $currentstring = $token->[4];
2537: } elsif ($target eq 'tex') {
2538: $Apache::londefdef::table[-1]{'row_number'}++;
2539: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2540: if ($alignchar ne '') {
2541: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2542: } else {
2543: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2544: }
2545: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2546: #
2547: # Need to save the number of table columns to preserve the max # columns.
2548: #
2549: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2550: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2551: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2552: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2553: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2554: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2555: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2556: }
2557: return $currentstring;
2558: }
2559:
2560: sub end_tr {
2561: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2562: my $currentstring = &end_p(); # Close any pending <p> in the row.
2563: if ($target eq 'web' || $target eq 'webgrade') {
2564: $currentstring .= $token->[2];
2565: } elsif ($target eq 'tex') {
2566: if ($Apache::londefdef::TD_redirection) {
2567: &end_td_tex($parstack,$parser,$safeeval);
2568: }
2569: # Counter columns must be the maximum number of columns seen
2570: # in the table so far so:
2571: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2572: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2573: }
2574:
2575:
2576:
2577: }
2578: return $currentstring;
2579: }
2580:
2581: #-- <td> tag (end tag optional)
2582: sub start_td {
2583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2584: my $currentstring = '';
2585: if ($target eq 'web' || $target eq 'webgrade') {
2586: $currentstring = $token->[4];
2587: } elsif ($target eq 'tex') {
2588: $Apache::londefdef::TD_redirection = 1;
2589: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2590: }
2591: return $currentstring;
2592: }
2593:
2594: sub tag_check {
2595: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2596: my @ar=@$parstack;
2597: for (my $i=$#ar-1;$i>=0;$i--) {
2598: if (lc($$tagstack[$i]) eq $good_tag) {
2599: &start_td_tex($parstack,$parser,$safeeval);
2600: last;
2601: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2602: splice @ar, $i+1;
2603: &end_td_tex(\@ar,$parser,$safeeval);
2604: &start_td_tex($parstack,$parser,$safeeval);
2605: last;
2606: }
2607: }
2608: return '';
2609: }
2610:
2611: sub start_td_tex {
2612: my ($parstack,$parser,$safeeval) = @_;
2613: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2614: if ($alignchar eq '') {
2615: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2616: }
2617: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2618: $Apache::londefdef::table[-1]{'counter_columns'}++;
2619: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2620: if (defined $TeXwidth) {
2621: my $current_length=&recalc($TeXwidth);
2622: $current_length=~/(\d+\.?\d*)/;
2623: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2624: }
2625: &Apache::lonxml::startredirection();
2626: return '';
2627: }
2628:
2629: sub end_td_tex {
2630: my ($parstack,$parser,$safeeval) = @_;
2631: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2632: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2633: my $data = &Apache::lonxml::endredirection();
2634:
2635: # The rowspan array of the table indicates which cells are part of a span.
2636: # n indicates the start of a span set of n rows.
2637: # ^ indicates a cell that continues a span set.
2638: # _ indicates the cell is at the bottom of a span set.
2639: # If this and subsequent cells are part of a rowspan, we must
2640: # push along the row until we find one that is not.
2641:
2642: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2643: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2644: # Part of a span.
2645: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2646: $current_column++;
2647: }
2648: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2649:
2650:
2651: # Get the column and row spans.
2652: # Colspan can be done via \multicolumn if I can figure out the data structs.
2653:
2654: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2655: if (!$colspan) {
2656: $colspan = 1;
2657: }
2658:
2659: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2660: if (!$rowspan) {
2661: $rowspan = 1;
2662: }
2663:
2664:
2665:
2666: for (my $c = 0; $c < $colspan; $c++) {
2667: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2668: for (my $i = 1; $i < $rowspan; $i++) {
2669: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2670: if ($i == ($rowspan-1)) {
2671: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2672: }
2673: }
2674: }
2675:
2676: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2677: if (defined $TeXwidth) {
2678: for (my $c = 0; $c < $colspan; $c++) {
2679: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2680: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2681: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2682: }
2683: } else {
2684: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2685: my $garbage_data=$data;
2686: my $fwidth=0;
2687: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2688: my $current_length=&recalc($1);
2689: $current_length=~/(\d+\.?\d*)/;
2690: if ($fwidth<$1) {$fwidth=$1;}
2691: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2692: }
2693: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2694: my $current_length=$1;
2695: if ($fwidth<$current_length) {$fwidth=$current_length;}
2696: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2697: }
2698: for (my $c = 0; $c < $colspan; $c++) {
2699: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2700: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2701: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2702: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2703: }
2704: } 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)*/) {
2705: my $garbage_data=$data;
2706: my $fwidth=0;
2707: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2708: my $current_length=&recalc($1);
2709: $current_length=~/(\d+\.?\d*)/;
2710: if ($fwidth<$1) {$fwidth=$1;}
2711: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2712: }
2713: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2714: my $current_length=&recalc($1);
2715: $current_length=~/(\d+\.?\d*)/;
2716: if ($fwidth<$1) {$fwidth=$1;}
2717: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2718: }
2719: for (my $c = 0; $c < $colspan; $c++) {
2720: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2721: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2722: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2723: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2724: }
2725: $data=~s/\\\\\s*$//;
2726: } else {
2727: $data=~s/^\s+(\S.*)/$1/;
2728: $data=~s/(.*\S)\s+$/$1/;
2729: $data=~s/(\s)+/$1/;
2730: my ($current_length,$min_length)=(0,0);
2731: if ($data=~/\\vskip/) {
2732: my $newdata=$data;
2733: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2734: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2735: foreach my $elementdata (@newdata) {
2736: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2737: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2738: my @words=split(/ /,$elementdata);
2739: foreach my $word (@words) {
2740: my $lengthword=2.5*&LATEX_length($word);
2741: if ($min_length<$lengthword) {$min_length=$lengthword;}
2742: }
2743: }
2744: } else {
2745: $current_length=2.5*&LATEX_length($data);
2746: my @words=split(/ /,$data);
2747: foreach my $word (@words) {
2748: my $lengthword=2*&LATEX_length($word);
2749: if ($min_length<$lengthword) {$min_length=$lengthword;}
2750: }
2751: }
2752: for (my $c = 0; $c < $colspan; $c++) {
2753: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2754: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2755: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2756: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2757: }
2758: }
2759: }
2760: # Substitute all of the tables nested in this cell in their appropriate places.
2761:
2762:
2763: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2764: for (my $in=0; $in<=$nested_count; $in++) {
2765: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2766: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2767: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2768: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2769:
2770: }
2771: # Should be be killing off the 'include' elements as they're used up?
2772:
2773: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2774:
2775:
2776:
2777:
2778: # the colspan array will indicate how many columns will be spanned by this
2779: # cell..this requires that counter_columns also be adjusted accordingly
2780: # so that the next bunch of text goes in the right cell. Note that since
2781: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2782: #
2783:
2784: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2785: for (my $i = 0; $i < ($colspan -1); $i++) {
2786: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2787: }
2788: for (my $r = 0; $r < $rowspan; $r++) {
2789: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2790: # Put empty text in spanned cols.
2791:
2792: }
2793:
2794:
2795:
2796: return '';
2797: }
2798:
2799: sub end_td {
2800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2801: my $currentstring = '';
2802: if ($target eq 'web' || $target eq 'webgrade') {
2803: $currentstring = $token->[2];
2804: } elsif ($target eq 'tex') {
2805: $Apache::londefdef::TD_redirection =0;
2806: &end_td_tex($parstack,$parser,$safeeval);
2807: }
2808: return $currentstring;
2809: }
2810:
2811: #-- <th> tag (end tag optional)
2812: sub start_th {
2813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2814: my $currentstring = '';
2815: if ($target eq 'web' || $target eq 'webgrade') {
2816: $currentstring = $token->[4];
2817: } elsif ($target eq 'tex') {
2818: $Apache::londefdef::TD_redirection = 1;
2819: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2820: }
2821: return $currentstring;
2822: }
2823:
2824: sub tagg_check {
2825: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2826: my @ar=@$parstack;
2827: for (my $i=$#ar-1;$i>=0;$i--) {
2828: if (lc($$tagstack[$i]) eq $good_tag) {
2829: &start_th_tex($parstack,$parser,$safeeval);
2830: last;
2831: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2832: splice @ar, $i+1;
2833: &end_th_tex(\@ar,$parser,$safeeval);
2834: &start_th_tex($parstack,$parser,$safeeval);
2835: last;
2836: }
2837: }
2838: return '';
2839: }
2840:
2841: sub start_th_tex {
2842: my ($parstack,$parser,$safeeval) = @_;
2843: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2844: if ($alignchar eq '') {
2845: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2846: }
2847: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2848: $Apache::londefdef::table[-1]{'counter_columns'}++;
2849: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2850: if (defined $TeXwidth) {
2851: my $current_length=&recalc($TeXwidth);
2852: $current_length=~/(\d+\.?\d*)/;
2853: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2854: }
2855: &Apache::lonxml::startredirection();
2856: return '';
2857: }
2858:
2859: sub end_th_tex {
2860: my ($parstack,$parser,$safeeval) = @_;
2861: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2862: my $data=&Apache::lonxml::endredirection();
2863: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2864: if (defined $TeXwidth) {
2865: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2866: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2867: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2868: } else {
2869: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2870: my $garbage_data=$data;
2871: my $fwidth=0;
2872: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2873: my $current_length=&recalc($1);
2874: $current_length=~/(\d+\.?\d*)/;
2875: if ($fwidth<$1) {$fwidth=$1;}
2876: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2877: }
2878: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2879: my $current_length=$1;
2880: if ($fwidth<$current_length) {$fwidth=$current_length;}
2881: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2882: }
2883: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2884: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2885: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2886: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2887: } else {
2888: $data=~s/^\s+(\S.*)/$1/;
2889: $data=~s/(.*\S)\s+$/$1/;
2890: $data=~s/(\s)+/$1/;
2891: my ($current_length,$min_length)=(0,0);
2892: if ($data=~/\\vskip/) {
2893: my $newdata=$data;
2894: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2895: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2896: foreach my $elementdata (@newdata) {
2897: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2898: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2899: my @words=split(/ /,$elementdata);
2900: foreach my $word (@words) {
2901: my $lengthword=2.5*&LATEX_length($word);
2902: if ($min_length<$lengthword) {$min_length=$lengthword;}
2903: }
2904: }
2905: } else {
2906: $current_length=2.5*&LATEX_length($data);
2907: my @words=split(/ /,$data);
2908: foreach my $word (@words) {
2909: my $lengthword=2*&LATEX_length($word);
2910: if ($min_length<$lengthword) {$min_length=$lengthword;}
2911: }
2912: }
2913: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2914: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2915: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2916: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2917: }
2918: }
2919: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2920: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2921: }
2922: #make data bold
2923: $data='\textbf{'.$data.'}';
2924: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2925: return'';
2926: }
2927:
2928: sub end_th {
2929: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2930: my $currentstring = &end_p(); # Close any open <p> in the row.
2931: if ($target eq 'web' || $target eq 'webgrade') {
2932: $currentstring .= $token->[2];
2933: } elsif ($target eq 'tex') {
2934: $Apache::londefdef::TD_redirection =0;
2935: &end_th_tex($parstack,$parser,$safeeval);
2936: }
2937: return $currentstring;
2938: }
2939:
2940: #-- <img> tag (end tag forbidden)
2941: #
2942: # Render the <IMG> tag.
2943: # <IMG> has the following attributes (in addition to the
2944: # standard HTML ones:
2945: # TeXwrap - Governs how the tex target will try to wrap text around
2946: # horizontally aligned images.
2947: # TeXwidth - The width of the image when rendered for print (mm).
2948: # TeXheight - The height of the image when rendered for print (mm)
2949: # (Note there seems to also be support for this as a % of page size)
2950: #
2951: sub start_img {
2952: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2953: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2954: undef,1);
2955: if (! $src &&
2956: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2957: ) {
2958: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2959: return '';
2960: }
2961: &Apache::lonxml::extlink($src);
2962: my $currentstring = '';
2963: my $scaling = .3;
2964:
2965: # Render unto browsers that which are the browser's...
2966:
2967: if ($target eq 'web' || $target eq 'webgrade') {
2968: if ($env{'browser.imagesuppress'} ne 'on') {
2969: my $enc = ('yes' eq
2970: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2971: $safeeval)));
2972: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2973: $enc);
2974: } else {
2975: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2976: undef,1);
2977: if (!$alttag) {
2978: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2979: $src);
2980: }
2981: $currentstring.='[IMAGE: '.$alttag.']';
2982: }
2983:
2984: # and render unto TeX that which is LaTeX
2985:
2986: } elsif ($target eq 'tex') {
2987: #
2988: # The alignment will require some superstructure to be put around
2989: # the \includegraphics stuff. At present we can only partially
2990: # simulate the alignments offered by html.
2991: #
2992: #
2993: my $align = lc(&Apache::lonxml::get_param('align',
2994: $parstack,
2995: $safeeval,
2996: undef,1));
2997: if(!$align) {
2998: $align = "bottom"; # This is html's default so it's ours too.
2999: }
3000: #
3001: &Apache::lonxml::debug("Alignemnt = $align");
3002: # LaTeX's image/text wrapping is really bad since it wants to
3003: # make figures float.
3004: # The user has the optional parameter (applicable only to l/r
3005: # alignment to use the picins/parpic directive to get wrapped text
3006: # this is also imperfect.. that's why we give them a choice...
3007: # so they can't yell at us for our choice.
3008: #
3009: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3010: $parstack,
3011: $safeeval,
3012: undef,0);
3013: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3014: if(!$latex_rendering) {
3015: $latex_rendering = "texwrap";
3016: }
3017: # using texwrap inside a table does not work. So, if after all of this,
3018: # texwrap is on, we turn it off if we detect we're in a table:
3019: #
3020: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3021: $latex_rendering = 'parpic';
3022: }
3023:
3024: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3025:
3026: #if original bmp/gif/jpg/png file exist do following:
3027: my $origsrc=$src;
3028: my ($path,$file) = &get_eps_image($src);
3029: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3030: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3031: &Apache::lonxml::debug("path = $path file = $file src = $src");
3032: if (-e $src) {
3033: &Apache::lonxml::debug("$src exists");
3034: my ($height_param,$width_param)=
3035: &image_size($origsrc,0.3,$parstack,$safeeval);
3036: my $size;
3037: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3038: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3039: # Default size if not able to extract that (e.g. eps image).
3040:
3041: # &Apache::lonnet::logthis("Size = $size");
3042:
3043: $size='['.$size;
3044: $size=~s/,$/]/;
3045: $currentstring .= '\graphicspath{{'.$path.'}}'
3046: .'\includegraphics'.$size.'{'.$file.'} ';
3047: my $closure;
3048: ($currentstring, $closure) = &align_latex_image($align,
3049: $latex_rendering,
3050: $currentstring,
3051: $width_param,
3052: $height_param);
3053: $currentstring .= $closure;
3054:
3055: } else {
3056: &Apache::lonxml::debug("$src does not exist");
3057: #original image file doesn't exist so check the alt attribute
3058: my $alt =
3059: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3060: unless ($alt) {
3061: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3062: }
3063:
3064: if ($alt) { $currentstring .= ' '.$alt.' '; }
3065: }
3066:
3067: # And here's where the semi-quote breaks down: allow the user
3068: # to edit the beast as well by rendering the problem for edit:
3069: } elsif ($target eq 'edit') {
3070: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3071: $currentstring .=&Apache::edit::tag_start($target,$token);
3072: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3073: &Apache::edit::browse('src',undef,'alt',$only).' '.
3074: &Apache::edit::search('src',undef,'alt').'<br />';
3075: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3076: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3077: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3078: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3079: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3080: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3081: ['','bottom','middle','top','left','right'],$token,5);
3082: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3083: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3084: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3085: ['no','yes'], $token, 2);
3086: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3087: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3088: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3089: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3090: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3091:
3092: if ($token->[2]{'src'}=~/\$/) {
3093: $currentstring.='Variable image source';
3094: } else {
3095: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3096: if ($width) { $currentstring.=' width="'.$width.'" '; }
3097: if ($height) { $currentstring.=' height="'.$height.'" '; }
3098: $currentstring .= ' />';
3099: }
3100: } elsif ($target eq 'modified') {
3101: my ($osrc,$owidth,$oheight)=
3102: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3103: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3104: $safeeval,'src','alt','align',
3105: 'TeXwidth','TeXheight', 'TeXwrap',
3106: 'width','height','encrypturl');
3107: my ($nsrc,$nwidth,$nheight)=
3108: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3109: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3110: &image_replication($loc);
3111: my ($iwidth,$iheight);
3112: if (-e $loc) {
3113: my $image = Image::Magick->new;
3114: $image->Read($loc);
3115: ($iwidth, $iheight) = ($image->Get('width'),
3116: $image->Get('height'));
3117: }
3118: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3119: # changed image or no size specified,
3120: # if they didn't explicitly change the
3121: # width or height use the ones from the image
3122: if ($iwidth && $iheight) {
3123: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3124: $token->[2]{'width'} = $iwidth;$ctag=1;
3125: }
3126: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3127: $token->[2]{'height'}=$iheight;$ctag=1;
3128: }
3129: }
3130: }
3131: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3132: # if we don't have a width or height
3133: if ($iwidth && $cwidth && !$cheight) {
3134: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3135: }
3136: if ($iheight && $cheight && !$cwidth) {
3137: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3138: }
3139: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3140: }
3141:
3142: return $currentstring;
3143: }
3144:
3145: sub end_img {
3146: my ($target,$token) = @_;
3147: my $currentstring = '';
3148: if ($target eq 'web' || $target eq 'webgrade') {
3149: $currentstring = $token->[2];
3150: } elsif ($target eq 'tex') {
3151: $currentstring = '';
3152: }
3153: return $currentstring;
3154: }
3155:
3156: #-- <applet> tag (end tag required)
3157: sub start_applet {
3158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3159:
3160: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3161: &Apache::lonxml::extlink($code);
3162: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3163: undef,1);
3164: &Apache::lonxml::extlink($archive);
3165: my $currentstring = '';
3166: if ($target eq 'web' || $target eq 'webgrade') {
3167: if ($env{'browser.appletsuppress'} ne 'on') {
3168: $currentstring = &Apache::lonenc::encrypt_ref($token,
3169: {'code'=>$code,
3170: 'archive'=>$archive}
3171: );
3172: } else {
3173: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3174: $safeeval,undef,1);
3175: unless ($alttag) {
3176: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3177: $code);
3178: }
3179: $currentstring='[APPLET: '.$alttag.']';
3180: }
3181: } elsif ($target eq 'tex') {
3182: # Turn off some stuff we can't be inside thank you LaTeX
3183:
3184:
3185: my $restart_sub = 0;
3186: my $restart_sup = 0;
3187:
3188: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3189: # using the start_ stop_ functions.. those tags only care about
3190: # $target.
3191:
3192: if (&is_inside_of($tagstack, "sub")) {
3193: $restart_sub = 1;
3194: $currentstring .= &end_sub($target, $token, $tagstack,
3195: $parstack, $parser, $safeeval);
3196: }
3197: if (&is_inside_of($tagstack, "sup")) {
3198: $restart_sup = 1;
3199: $currentstring .= &end_sup($target, $token, $tagstack,
3200: $parstack, $parser, $safeeval);
3201: }
3202:
3203: # Now process the applet; just replace it with its alt attribute.
3204:
3205: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3206: $safeeval,undef,1);
3207: unless ($alttag) {
3208: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3209: undef,1);
3210: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3211: $code);
3212: }
3213: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3214: '.}\end{center}';
3215:
3216: # Turn stuff back on that we can't be inside of.
3217:
3218: if ($restart_sub) {
3219: $currentstring .= &start_sub($target, $token, $tagstack,
3220: $parstack, $parser, $safeeval);
3221: }
3222: if ($restart_sup) {
3223: $currentstring .= &start_sup($target, $token, $tagstack,
3224: $parstack, $parser, $safeeval);
3225: }
3226: }
3227: return $currentstring;
3228: }
3229:
3230: sub end_applet {
3231: my ($target,$token) = @_;
3232: my $currentstring = '';
3233: if ($target eq 'web' || $target eq 'webgrade') {
3234: $currentstring = $token->[2];
3235: } elsif ($target eq 'tex') {
3236: }
3237: return $currentstring;
3238: }
3239:
3240: #-- <embed> tag (end tag optional/required)
3241: sub start_embed {
3242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3243: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3244: &Apache::lonxml::extlink($src);
3245: my $currentstring = '';
3246: if ($target eq 'web' || $target eq 'webgrade') {
3247: if ($env{'browser.embedsuppress'} ne 'on') {
3248: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3249: } else {
3250: my $alttag=&Apache::lonxml::get_param
3251: ('alt',$parstack,$safeeval,undef,1);
3252: unless ($alttag) {
3253: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3254: }
3255: $currentstring='[EMBED: '.$alttag.']';
3256: }
3257: } elsif ($target eq 'tex') {
3258: }
3259: return $currentstring;
3260: }
3261:
3262: sub end_embed {
3263: my ($target,$token) = @_;
3264: my $currentstring = '';
3265: if ($target eq 'web' || $target eq 'webgrade') {
3266: $currentstring = $token->[2];
3267: } elsif ($target eq 'tex') {
3268: }
3269: return $currentstring;
3270: }
3271:
3272: #-- <param> tag (end tag forbidden)
3273: sub start_param {
3274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3275: if (&Apache::lonxml::get_param('name',$parstack,
3276: $safeeval,undef,1)=~/^cabbase$/i) {
3277: my $value=&Apache::lonxml::get_param('value',$parstack,
3278: $safeeval,undef,1);
3279: &Apache::lonxml::extlink($value);
3280: }
3281:
3282: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3283: &Apache::lonxml::extlink($src);
3284: my $currentstring = '';
3285: if ($target eq 'web' || $target eq 'webgrade') {
3286: my %toconvert;
3287: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3288: if ($src) { $toconvert{'src'}= $src; }
3289: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3290: undef,1);
3291: if ($name=~/^cabbase$/i) {
3292: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3293: $safeeval,undef,1);
3294: }
3295: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3296: } elsif ($target eq 'tex') {
3297: }
3298: return $currentstring;
3299: }
3300:
3301: sub end_param {
3302: my ($target,$token) = @_;
3303: my $currentstring = '';
3304: if ($target eq 'web' || $target eq 'webgrade') {
3305: $currentstring = $token->[2];
3306: } elsif ($target eq 'tex') {
3307: }
3308: return $currentstring;
3309: }
3310:
3311: #-- <allow> tag
3312: sub start_allow {
3313: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3314: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3315: &Apache::lonxml::extlink($src);
3316:
3317: if ($target eq 'tex') { &image_replication($src); }
3318: my $result;
3319: if ($target eq 'edit') {
3320: $result .=&Apache::edit::tag_start($target,$token);
3321: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3322: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3323: } elsif ($target eq 'modified') {
3324: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3325: $safeeval,'src');
3326: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3327: }
3328: return $result;
3329: }
3330:
3331: sub end_allow {
3332: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3333: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3334: return '';
3335: }
3336:
3337: #-- Frames (end tag required)
3338: #-- <frameset>
3339: sub start_frameset {
3340: my ($target,$token) = @_;
3341: my $currentstring = ''; # Close any pending para.
3342: if ($target eq 'web' || $target eq 'webgrade') {
3343: $currentstring =
3344: &Apache::loncommon::start_page($Apache::londefdef::title,
3345: $Apache::londefdef::head,
3346: {'add_entries' => $token->[2],
3347: 'no_title' => 1,
3348: 'force_register' => 1,
3349: 'frameset' => 1,});
3350:
3351: }
3352: return $currentstring;
3353: }
3354:
3355: sub end_frameset {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web' || $target eq 'webgrade') {
3359: $currentstring = $token->[2];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: #-- <xmp> (end tag required)
3365: sub start_xmp {
3366: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web' || $target eq 'webgrade') {
3369: $currentstring .= $token->[4];
3370: } elsif ($target eq 'tex') {
3371: $currentstring .= '\begin{verbatim}';
3372: }
3373: return $currentstring;
3374: }
3375:
3376: sub end_xmp {
3377: my ($target,$token) = @_;
3378: my $currentstring = '';
3379: if ($target eq 'web' || $target eq 'webgrade') {
3380: $currentstring .= $token->[2];
3381: } elsif ($target eq 'tex') {
3382: $currentstring .= '\end{verbatim}';
3383: }
3384: return $currentstring;
3385: }
3386:
3387: #-- <pre> (end tag required)
3388: sub start_pre {
3389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3390: my $currentstring = &end_p(); # close off pending <p>
3391: if ($target eq 'web' || $target eq 'webgrade') {
3392: $currentstring .= $token->[4];
3393: } elsif ($target eq 'tex') {
3394: $currentstring .= '\begin{verbatim}';
3395: &Apache::lonxml::disable_LaTeX_substitutions();
3396: }
3397: return $currentstring;
3398: }
3399:
3400: sub end_pre {
3401: my ($target,$token) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web' || $target eq 'webgrade') {
3404: $currentstring .= $token->[2];
3405: } elsif ($target eq 'tex') {
3406: $currentstring .= '\end{verbatim}';
3407: &Apache::lonxml::enable_LaTeX_substitutions();
3408: }
3409: return $currentstring;
3410: }
3411:
3412: #-- <insert>
3413: sub start_insert {
3414: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3415: my $currentstring = '';
3416: if ($target eq 'web' || $target eq 'webgrade') {
3417: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3418: $currentstring .= '<b>'.$display.'</b>';;
3419: }
3420: return $currentstring;
3421: }
3422:
3423: sub end_insert {
3424: my ($target,$token) = @_;
3425: my $currentstring = '';
3426: if ($target eq 'web' || $target eq 'webgrade') {
3427: $currentstring .= '';
3428: }
3429: return $currentstring;
3430: }
3431:
3432: #-- <externallink>
3433: sub start_externallink {
3434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3435: my $currentstring = '';
3436: if ($target eq 'web' || $target eq 'webgrade') {
3437: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3438: $currentstring .= '<b>'.$display.'</b>';;
3439: }
3440: return $currentstring;
3441: }
3442:
3443: sub end_externallink {
3444: my ($target,$token) = @_;
3445: my $currentstring = '';
3446: if ($target eq 'web' || $target eq 'webgrade') {
3447: $currentstring .= '';
3448: }
3449: return $currentstring;
3450: }
3451:
3452: #-- <blankspace heigth="">
3453: sub start_blankspace {
3454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3455: my $currentstring = &end_p(); # closes off any unclosed <p>
3456: if ($target eq 'tex') {
3457: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3458: $currentstring .= '\vskip '.$howmuch.' ';
3459: }
3460: return $currentstring;
3461: }
3462:
3463: sub end_blankspace {
3464: my ($target,$token) = @_;
3465: my $currentstring = '';
3466: if ($target eq 'tex') {
3467: $currentstring .= '';
3468: }
3469: return $currentstring;
3470: }
3471:
3472: #-- <abbr> tag (end tag required)
3473: sub start_abbr {
3474: my ($target,$token) = @_;
3475: my $currentstring = '';
3476: if ($target eq 'web' || $target eq 'webgrade') {
3477: $currentstring = $token->[4];
3478: }
3479: return $currentstring;
3480: }
3481:
3482: sub end_abbr {
3483: my ($target,$token) = @_;
3484: my $currentstring = '';
3485: if ($target eq 'web' || $target eq 'webgrade') {
3486: $currentstring = $token->[2];
3487: }
3488: return $currentstring;
3489: }
3490:
3491: #-- <acronym> tag (end tag required)
3492: sub start_acronym {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web' || $target eq 'webgrade') {
3496: $currentstring = $token->[4];
3497: }
3498: return $currentstring;
3499: }
3500:
3501: sub end_acronym {
3502: my ($target,$token) = @_;
3503: my $currentstring = '';
3504: if ($target eq 'web' || $target eq 'webgrade') {
3505: $currentstring = $token->[2];
3506: }
3507: return $currentstring;
3508: }
3509:
3510: #-- <area> tag (end tag forbidden)
3511: sub start_area {
3512: my ($target,$token) = @_;
3513: my $currentstring = '';
3514: if ($target eq 'web' || $target eq 'webgrade') {
3515: $currentstring = $token->[4];
3516: }
3517: return $currentstring;
3518: }
3519:
3520: sub end_area {
3521: my ($target,$token) = @_;
3522: my $currentstring = '';
3523: if ($target eq 'web' || $target eq 'webgrade') {
3524: $currentstring = $token->[2];
3525: }
3526: return $currentstring;
3527: }
3528:
3529: #-- <base> tag (end tag forbidden)
3530: sub start_base {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web' || $target eq 'webgrade') {
3534: $currentstring = $token->[4];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: sub end_base {
3540: my ($target,$token) = @_;
3541: my $currentstring = '';
3542: if ($target eq 'web' || $target eq 'webgrade') {
3543: $currentstring = $token->[2];
3544: }
3545: return $currentstring;
3546: }
3547:
3548: #-- <bdo> tag (end tag required)
3549: sub start_bdo {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web' || $target eq 'webgrade') {
3553: $currentstring = $token->[4];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: sub end_bdo {
3559: my ($target,$token) = @_;
3560: my $currentstring = '';
3561: if ($target eq 'web' || $target eq 'webgrade') {
3562: $currentstring = $token->[2];
3563: }
3564: return $currentstring;
3565: }
3566:
3567: #-- <bgsound> tag (end tag optional)
3568: sub start_bgsound {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web' || $target eq 'webgrade') {
3572: $currentstring = $token->[4];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: sub end_bgsound {
3578: my ($target,$token) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: $currentstring = $token->[2];
3582: }
3583: return $currentstring;
3584: }
3585:
3586: #-- <blink> tag (end tag required)
3587: sub start_blink {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring = $token->[4];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: sub end_blink {
3597: my ($target,$token) = @_;
3598: my $currentstring = '';
3599: if ($target eq 'web' || $target eq 'webgrade') {
3600: $currentstring = $token->[2];
3601: }
3602: return $currentstring;
3603: }
3604:
3605: #-- <blockquote> tag (end tag required)
3606: sub start_blockquote {
3607: my ($target,$token) = @_;
3608: my $currentstring = &end_p(); # Close any unclosed <p>
3609: if ($target eq 'web' || $target eq 'webgrade') {
3610: $currentstring .= $token->[4];
3611: }
3612: if ($target eq 'tex') {
3613: $currentstring .= '\begin{quote}';
3614: }
3615: return $currentstring;
3616: }
3617:
3618: sub end_blockquote {
3619: my ($target,$token) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: $currentstring = $token->[2];
3623: }
3624: if ($target eq 'tex') {
3625: $currentstring = '\end{quote}';
3626: }
3627: return $currentstring;
3628: }
3629:
3630: #-- <button> tag (end tag required)
3631: sub start_button {
3632: my ($target,$token) = @_;
3633: my $currentstring = '';
3634: if ($target eq 'web' || $target eq 'webgrade') {
3635: $currentstring = $token->[4];
3636: }
3637: return $currentstring;
3638: }
3639:
3640: sub end_button {
3641: my ($target,$token) = @_;
3642: my $currentstring = '';
3643: if ($target eq 'web' || $target eq 'webgrade') {
3644: $currentstring = $token->[2];
3645: }
3646: return $currentstring;
3647: }
3648:
3649: #-- <caption> tag (end tag required)
3650: sub start_caption {
3651: my ($target,$token) = @_;
3652: my $currentstring = '';
3653: if ($target eq 'web' || $target eq 'webgrade') {
3654: $currentstring = $token->[4];
3655: }
3656: return $currentstring;
3657: }
3658:
3659: sub end_caption {
3660: my ($target,$token) = @_;
3661: my $currentstring = '';
3662: if ($target eq 'web' || $target eq 'webgrade') {
3663: $currentstring = $token->[2];
3664: }
3665: return $currentstring;
3666: }
3667:
3668: #-- <col> tag (end tag forbdden)
3669: sub start_col {
3670: my ($target,$token) = @_;
3671: my $currentstring = '';
3672: if ($target eq 'web' || $target eq 'webgrade') {
3673: $currentstring = $token->[4];
3674: }
3675: return $currentstring;
3676: }
3677:
3678: sub end_col {
3679: my ($target,$token) = @_;
3680: my $currentstring = '';
3681: if ($target eq 'web' || $target eq 'webgrade') {
3682: $currentstring = $token->[2];
3683: }
3684: return $currentstring;
3685: }
3686:
3687: #-- <colgroup> tag (end tag optional)
3688: sub start_colgroup {
3689: my ($target,$token) = @_;
3690: my $currentstring = '';
3691: if ($target eq 'web' || $target eq 'webgrade') {
3692: $currentstring = $token->[4];
3693: }
3694: return $currentstring;
3695: }
3696:
3697: sub end_colgroup {
3698: my ($target,$token) = @_;
3699: my $currentstring = '';
3700: if ($target eq 'web' || $target eq 'webgrade') {
3701: $currentstring = $token->[2];
3702: }
3703: return $currentstring;
3704: }
3705:
3706: #-- <del> tag (end tag required)
3707: sub start_del {
3708: my ($target,$token) = @_;
3709: my $currentstring = '';
3710: if ($target eq 'web' || $target eq 'webgrade') {
3711: $currentstring = $token->[4];
3712: }
3713: return $currentstring;
3714: }
3715:
3716: sub end_del {
3717: my ($target,$token) = @_;
3718: my $currentstring = '';
3719: if ($target eq 'web' || $target eq 'webgrade') {
3720: $currentstring = $token->[2];
3721: }
3722: return $currentstring;
3723: }
3724:
3725: #-- <fieldset> tag (end tag required)
3726: sub start_fieldset {
3727: my ($target,$token) = @_;
3728: my $currentstring = '';
3729: if ($target eq 'web' || $target eq 'webgrade') {
3730: $currentstring = $token->[4];
3731: }
3732: return $currentstring;
3733: }
3734:
3735: sub end_fieldset {
3736: my ($target,$token) = @_;
3737: my $currentstring = '';
3738: if ($target eq 'web' || $target eq 'webgrade') {
3739: $currentstring = $token->[2];
3740: }
3741: return $currentstring;
3742: }
3743:
3744: #-- <frame> tag (end tag forbidden)
3745: sub start_frame {
3746: my ($target,$token) = @_;
3747: my $currentstring = '';
3748: if ($target eq 'web' || $target eq 'webgrade') {
3749: $currentstring = $token->[4];
3750: }
3751: return $currentstring;
3752: }
3753:
3754: sub end_frame {
3755: my ($target,$token) = @_;
3756: my $currentstring = '';
3757: if ($target eq 'web' || $target eq 'webgrade') {
3758: $currentstring = $token->[2];
3759: }
3760: return $currentstring;
3761: }
3762:
3763: #-- <iframe> tag (end tag required)
3764: sub start_iframe {
3765: my ($target,$token) = @_;
3766: my $currentstring = '';
3767: if ($target eq 'web' || $target eq 'webgrade') {
3768: $currentstring = $token->[4];
3769: }
3770: return $currentstring;
3771: }
3772:
3773: sub end_iframe {
3774: my ($target,$token) = @_;
3775: my $currentstring = '';
3776: if ($target eq 'web' || $target eq 'webgrade') {
3777: $currentstring = $token->[2];
3778: }
3779: return $currentstring;
3780: }
3781:
3782: #-- <ins> tag (end tag required)
3783: sub start_ins {
3784: my ($target,$token) = @_;
3785: my $currentstring = '';
3786: if ($target eq 'web' || $target eq 'webgrade') {
3787: $currentstring = $token->[4];
3788: }
3789: return $currentstring;
3790: }
3791:
3792: sub end_ins {
3793: my ($target,$token) = @_;
3794: my $currentstring = '';
3795: if ($target eq 'web' || $target eq 'webgrade') {
3796: $currentstring = $token->[2];
3797: }
3798: return $currentstring;
3799: }
3800:
3801: #-- <isindex> tag (end tag forbidden)
3802: sub start_isindex {
3803: my ($target,$token) = @_;
3804: my $currentstring = '';
3805: if ($target eq 'web' || $target eq 'webgrade') {
3806: $currentstring = $token->[4];
3807: }
3808: return $currentstring;
3809: }
3810:
3811: sub end_isindex {
3812: my ($target,$token) = @_;
3813: my $currentstring = '';
3814: if ($target eq 'web' || $target eq 'webgrade') {
3815: $currentstring = $token->[2];
3816: }
3817: return $currentstring;
3818: }
3819:
3820: #-- <keygen> tag (end tag forbidden)
3821: sub start_keygen {
3822: my ($target,$token) = @_;
3823: my $currentstring = '';
3824: if ($target eq 'web' || $target eq 'webgrade') {
3825: $currentstring = $token->[4];
3826: }
3827: return $currentstring;
3828: }
3829:
3830: sub end_keygen {
3831: my ($target,$token) = @_;
3832: my $currentstring = '';
3833: if ($target eq 'web' || $target eq 'webgrade') {
3834: $currentstring = $token->[2];
3835: }
3836: return $currentstring;
3837: }
3838:
3839: #-- <label> tag
3840: sub start_label {
3841: my ($target,$token) = @_;
3842: my $currentstring = '';
3843: if ($target eq 'web' || $target eq 'webgrade') {
3844: $currentstring = $token->[4];
3845: }
3846: return $currentstring;
3847: }
3848:
3849: sub end_label {
3850: my ($target,$token) = @_;
3851: my $currentstring = '';
3852: if ($target eq 'web' || $target eq 'webgrade') {
3853: $currentstring = $token->[2];
3854: }
3855: return $currentstring;
3856: }
3857:
3858: #-- <layer> tag (end tag required)
3859: sub start_layer {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[4];
3864: }
3865: return $currentstring;
3866: }
3867:
3868: sub end_layer {
3869: my ($target,$token) = @_;
3870: my $currentstring = '';
3871: if ($target eq 'web' || $target eq 'webgrade') {
3872: $currentstring = $token->[2];
3873: }
3874: return $currentstring;
3875: }
3876:
3877: #-- <legend> tag (end tag required)
3878: sub start_legend {
3879: my ($target,$token) = @_;
3880: my $currentstring = '';
3881: if ($target eq 'web' || $target eq 'webgrade') {
3882: $currentstring = $token->[4];
3883: }
3884: return $currentstring;
3885: }
3886:
3887: sub end_legend {
3888: my ($target,$token) = @_;
3889: my $currentstring = '';
3890: if ($target eq 'web' || $target eq 'webgrade') {
3891: $currentstring = $token->[2];
3892: }
3893: return $currentstring;
3894: }
3895:
3896: #-- <link> tag (end tag forbidden)
3897: sub start_link {
3898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3902: undef,1);
3903: &Apache::lonxml::extlink($href);
3904: $currentstring = $token->[4];
3905: }
3906: return $currentstring;
3907: }
3908:
3909: sub end_link {
3910: my ($target,$token) = @_;
3911: my $currentstring = '';
3912: if ($target eq 'web' || $target eq 'webgrade') {
3913: $currentstring = $token->[2];
3914: }
3915: return $currentstring;
3916: }
3917:
3918: #-- <marquee> tag (end tag optional)
3919: sub start_marquee {
3920: my ($target,$token) = @_;
3921: my $currentstring = '';
3922: if ($target eq 'web' || $target eq 'webgrade') {
3923: $currentstring = $token->[4];
3924: }
3925: return $currentstring;
3926: }
3927:
3928: sub end_marquee {
3929: my ($target,$token) = @_;
3930: my $currentstring = '';
3931: if ($target eq 'web' || $target eq 'webgrade') {
3932: $currentstring = $token->[2];
3933: }
3934: return $currentstring;
3935: }
3936:
3937: #-- <multicol> tag (end tag required)
3938: sub start_multicol {
3939: my ($target,$token) = @_;
3940: my $currentstring = &end_p(); # Close any pending <p>
3941: if ($target eq 'web' || $target eq 'webgrade') {
3942: $currentstring .= $token->[4];
3943: }
3944: return $currentstring;
3945: }
3946:
3947: sub end_multicol {
3948: my ($target,$token) = @_;
3949: my $currentstring = '';
3950: if ($target eq 'web' || $target eq 'webgrade') {
3951: $currentstring = $token->[2];
3952: }
3953: return $currentstring;
3954: }
3955:
3956: #-- <nobr> tag (end tag required)
3957: sub start_nobr {
3958: my ($target,$token) = @_;
3959: my $currentstring = '';
3960: if ($target eq 'web' || $target eq 'webgrade') {
3961: $currentstring = $token->[4];
3962: } elsif ($target eq 'tex') {
3963: $currentstring='\mbox{';
3964: }
3965: return $currentstring;
3966: }
3967:
3968: sub end_nobr {
3969: my ($target,$token) = @_;
3970: my $currentstring = '';
3971: if ($target eq 'web' || $target eq 'webgrade') {
3972: $currentstring = $token->[2];
3973: } elsif ($target eq 'tex') {
3974: $currentstring='}';
3975: }
3976: return $currentstring;
3977: }
3978:
3979: #-- <noembed> tag (end tag required)
3980: sub start_noembed {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[4];
3985: }
3986: return $currentstring;
3987: }
3988:
3989: sub end_noembed {
3990: my ($target,$token) = @_;
3991: my $currentstring = '';
3992: if ($target eq 'web' || $target eq 'webgrade') {
3993: $currentstring = $token->[2];
3994: }
3995: return $currentstring;
3996: }
3997:
3998: #-- <noframes> tag (end tag required)
3999: sub start_noframes {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[4];
4004: }
4005: return $currentstring;
4006: }
4007:
4008: sub end_noframes {
4009: my ($target,$token) = @_;
4010: my $currentstring = '';
4011: if ($target eq 'web' || $target eq 'webgrade') {
4012: $currentstring = $token->[2];
4013: }
4014: return $currentstring;
4015: }
4016:
4017: #-- <nolayer> tag (end tag required)
4018: sub start_nolayer {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web' || $target eq 'webgrade') {
4022: $currentstring = $token->[4];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: sub end_nolayer {
4028: my ($target,$token) = @_;
4029: my $currentstring = '';
4030: if ($target eq 'web' || $target eq 'webgrade') {
4031: $currentstring = $token->[2];
4032: }
4033: return $currentstring;
4034: }
4035:
4036: #-- <noscript> tag (end tag required)
4037: sub start_noscript {
4038: my ($target,$token) = @_;
4039: my $currentstring = '';
4040: if ($target eq 'web' || $target eq 'webgrade') {
4041: $currentstring = $token->[4];
4042: }
4043: return $currentstring;
4044: }
4045:
4046: sub end_noscript {
4047: my ($target,$token) = @_;
4048: my $currentstring = '';
4049: if ($target eq 'web' || $target eq 'webgrade') {
4050: $currentstring = $token->[2];
4051: }
4052: return $currentstring;
4053: }
4054:
4055: #-- <object> tag (end tag required)
4056: sub start_object {
4057: my ($target,$token) = @_;
4058: my $currentstring = '';
4059: if ($target eq 'web' || $target eq 'webgrade') {
4060: $currentstring = $token->[4];
4061: }
4062: return $currentstring;
4063: }
4064:
4065: sub end_object {
4066: my ($target,$token) = @_;
4067: my $currentstring = '';
4068: if ($target eq 'web' || $target eq 'webgrade') {
4069: $currentstring = $token->[2];
4070: }
4071: return $currentstring;
4072: }
4073:
4074: #-- <optgroup> tag (end tag required)
4075: sub start_optgroup {
4076: my ($target,$token) = @_;
4077: my $currentstring = '';
4078: if ($target eq 'web' || $target eq 'webgrade') {
4079: $currentstring = $token->[4];
4080: }
4081: return $currentstring;
4082: }
4083:
4084: sub end_optgroup {
4085: my ($target,$token) = @_;
4086: my $currentstring = '';
4087: if ($target eq 'web' || $target eq 'webgrade') {
4088: $currentstring = $token->[2];
4089: }
4090: return $currentstring;
4091: }
4092:
4093: #-- <samp> tag (end tag required)
4094: sub start_samp {
4095: my ($target,$token) = @_;
4096: my $currentstring = '';
4097: if ($target eq 'web' || $target eq 'webgrade') {
4098: $currentstring = $token->[4];
4099: } elsif ($target eq 'tex') {
4100: $currentstring='\texttt{';
4101: }
4102: return $currentstring;
4103: }
4104:
4105: sub end_samp {
4106: my ($target,$token) = @_;
4107: my $currentstring = '';
4108: if ($target eq 'web' || $target eq 'webgrade') {
4109: $currentstring = $token->[2];
4110: } elsif ($target eq 'tex') {
4111: $currentstring='}';
4112: }
4113: return $currentstring;
4114: }
4115:
4116: #-- <server> tag
4117: sub start_server {
4118: my ($target,$token) = @_;
4119: my $currentstring = '';
4120: if ($target eq 'web' || $target eq 'webgrade') {
4121: $currentstring = $token->[4];
4122: }
4123: return $currentstring;
4124: }
4125:
4126: sub end_server {
4127: my ($target,$token) = @_;
4128: my $currentstring = '';
4129: if ($target eq 'web' || $target eq 'webgrade') {
4130: $currentstring = $token->[2];
4131: }
4132: return $currentstring;
4133: }
4134:
4135: #-- <spacer> tag (end tag forbidden)
4136: sub start_spacer {
4137: my ($target,$token) = @_;
4138: my $currentstring = &end_p(); # Close off any open <p> tag.
4139: if ($target eq 'web' || $target eq 'webgrade') {
4140: $currentstring .= $token->[4];
4141: }
4142: return $currentstring;
4143: }
4144:
4145: sub end_spacer {
4146: my ($target,$token) = @_;
4147: my $currentstring = '';
4148: if ($target eq 'web' || $target eq 'webgrade') {
4149: $currentstring = $token->[2];
4150: }
4151: return $currentstring;
4152: }
4153:
4154: #-- <span> tag (end tag required)
4155: sub start_span {
4156: my ($target,$token) = @_;
4157: my $currentstring = '';
4158: if ($target eq 'web' || $target eq 'webgrade') {
4159: $currentstring = $token->[4];
4160: }
4161: return $currentstring;
4162: }
4163:
4164: sub end_span {
4165: my ($target,$token) = @_;
4166: my $currentstring = '';
4167: if ($target eq 'web' || $target eq 'webgrade') {
4168: $currentstring = $token->[2];
4169: }
4170: return $currentstring;
4171: }
4172:
4173: #-- <tbody> tag (end tag optional)
4174: sub start_tbody {
4175: my ($target,$token) = @_;
4176: my $currentstring = '';
4177: if ($target eq 'web' || $target eq 'webgrade') {
4178: $currentstring = $token->[4];
4179: }
4180: return $currentstring;
4181: }
4182:
4183: sub end_tbody {
4184: my ($target,$token) = @_;
4185: my $currentstring = '';
4186: if ($target eq 'web' || $target eq 'webgrade') {
4187: $currentstring = $token->[2];
4188: }
4189: return $currentstring;
4190: }
4191:
4192: #-- <tfoot> tag (end tag optional)
4193: sub start_tfoot {
4194: my ($target,$token) = @_;
4195: my $currentstring = '';
4196: if ($target eq 'web' || $target eq 'webgrade') {
4197: $currentstring = $token->[4];
4198: }
4199: return $currentstring;
4200: }
4201:
4202: sub end_tfoot {
4203: my ($target,$token) = @_;
4204: my $currentstring = '';
4205: if ($target eq 'web' || $target eq 'webgrade') {
4206: $currentstring = $token->[2];
4207: }
4208: return $currentstring;
4209: }
4210:
4211: #-- <thead> tag (end tag optional)
4212: sub start_thead {
4213: my ($target,$token) = @_;
4214: my $currentstring = '';
4215: if ($target eq 'web' || $target eq 'webgrade') {
4216: $currentstring = $token->[4];
4217: }
4218: return $currentstring;
4219: }
4220:
4221: sub end_thead {
4222: my ($target,$token) = @_;
4223: my $currentstring = '';
4224: if ($target eq 'web' || $target eq 'webgrade') {
4225: $currentstring = $token->[2];
4226: }
4227: return $currentstring;
4228: }
4229:
4230: #-- <var> tag
4231: sub start_var {
4232: my ($target,$token) = @_;
4233: my $currentstring = '';
4234: if ($target eq 'web' || $target eq 'webgrade') {
4235: $currentstring = $token->[4];
4236: } elsif ($target eq 'tex') {
4237: $currentstring = '\textit{';
4238: }
4239: return $currentstring;
4240: }
4241:
4242: sub end_var {
4243: my ($target,$token) = @_;
4244: my $currentstring = '';
4245: if ($target eq 'web' || $target eq 'webgrade') {
4246: $currentstring = $token->[2];
4247: } elsif ($target eq 'tex') {
4248: $currentstring = '}';
4249: }
4250: return $currentstring;
4251: }
4252:
4253: #-- <wbr> tag (end tag forbidden)
4254: sub start_wbr {
4255: my ($target,$token) = @_;
4256: my $currentstring = '';
4257: if ($target eq 'web' || $target eq 'webgrade') {
4258: $currentstring = $token->[4];
4259: }
4260: return $currentstring;
4261: }
4262:
4263: sub end_wbr {
4264: my ($target,$token) = @_;
4265: my $currentstring = '';
4266: if ($target eq 'web' || $target eq 'webgrade') {
4267: $currentstring = $token->[2];
4268: }
4269: return $currentstring;
4270: }
4271:
4272: #-- <hideweboutput> tag
4273: sub start_hideweboutput {
4274: my ($target,$token) = @_;
4275: if ($target eq 'web' || $target eq 'webgrade') {
4276: &Apache::lonxml::startredirection();
4277: }
4278: return '';
4279: }
4280:
4281: sub end_hideweboutput {
4282: my ($target,$token) = @_;
4283: my $currentstring = '';
4284: if ($target eq 'web' || $target eq 'webgrade') {
4285: $currentstring = &Apache::lonxml::endredirection();
4286: }
4287: return '';
4288: }
4289:
4290:
4291: sub image_replication {
4292: my $src = shift;
4293: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4294: #replicates eps or ps
4295: my $epssrc = my $pssrc = $src;
4296: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4297: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4298: if (not -e $epssrc && not -e $pssrc) {
4299: my $result=&Apache::lonnet::repcopy($epssrc);
4300: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4301: }
4302: return '';
4303: }
4304: #
4305: # Get correct sizing parameter for an image given
4306: # it's initial ht. and wid. This allows sizing of
4307: # images that are generated on-the-fly (e.g. gnuplot)
4308: # as well as serving as a utility for image_size.
4309: #
4310: # Parameter:
4311: # height_param
4312: # width_param - Initial picture dimensions.
4313: # scaling - A scale factor.
4314: # parstack, - the current stack of tag attributes
4315: # from the xml parser
4316: # safeeval, - pointer to the safespace
4317: # depth, - from what level in the stack to look for attributes
4318: # (assumes -1 if unspecified)
4319: # cis - look for attrubutes case insensitively
4320: # (assumes false)
4321: #
4322: # Returns:
4323: # height, width - new dimensions.
4324: #
4325: sub resize_image {
4326: my ($height_param, $width_param, $scaling,
4327: $parstack, $safeeval, $depth, $cis) = @_;
4328:
4329: # First apply the scaling...
4330:
4331: $height_param = $height_param * $scaling;
4332: $width_param = $width_param * $scaling;
4333:
4334: #do we have any specified LaTeX size of the picture?
4335: my $toget='TeXwidth';
4336: if ($cis) {
4337: $toget=lc($toget);
4338: }
4339: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4340: $safeeval,$depth,$cis);
4341: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4342: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4343: $safeeval,$depth,$cis);
4344: #do we have any specified web size of the picture?
4345: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4346: $depth,1);
4347: if ($TeXwidth) {
4348: my $old_width_param=$width_param;
4349: if ($TeXwidth=~/(\d+)\s*\%/) {
4350: $width_param = $1*$env{'form.textwidth'}/100;
4351: } else {
4352: $width_param = $TeXwidth;
4353: }
4354: if ($TeXheight) {
4355: $height_param = $TeXheight;
4356: } elsif ($old_width_param) {
4357: $height_param=$TeXwidth/$old_width_param*$height_param;
4358: }
4359: } elsif ($TeXheight) {
4360: $height_param = $TeXheight;
4361: if ($height_param) {
4362: $width_param = $TeXheight/$height_param*$width_param;
4363: }
4364: } elsif ($width) {
4365: my $old_width_param=$width_param;
4366: $width_param = $width*$scaling;
4367: if ($old_width_param) {
4368: $height_param=$width_param/$old_width_param*$height_param;
4369: }
4370: }
4371: if ($width_param > $env{'form.textwidth'}) {
4372: my $old_width_param=$width_param;
4373: $width_param =0.95*$env{'form.textwidth'};
4374: if ($old_width_param) {
4375: $height_param=$width_param/$old_width_param*$height_param;
4376: }
4377: }
4378:
4379: return ($height_param, $width_param);
4380: }
4381:
4382: sub image_size {
4383: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4384:
4385: #size of image from gif/jpg/jpeg/png
4386: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4387: if (-e $ressrc) {
4388: $src = $ressrc;
4389: }
4390: my $image = Image::Magick->new;
4391: my $current_figure = $image->Read($src);
4392: my $width_param = $image->Get('width');
4393: my $height_param = $image->Get('height');
4394: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4395: undef($image);
4396:
4397: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4398: $scaling, $parstack, $safeeval,
4399: $depth, $cis);
4400:
4401: return ($height_param, $width_param);
4402: }
4403:
4404: sub image_width {
4405: my ($height, $width) = &image_size(@_);
4406: return $width;
4407: }
4408: # Not yet 100% sure this is correct in all circumstances..
4409: # due to my uncertainty about mods to image_size.
4410: #
4411: sub image_height {
4412: my ($height, $width) = &image_size(@_);
4413: return $height;
4414: }
4415:
4416: sub get_eps_image {
4417: my ($src)=@_;
4418: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4419:
4420: # In order to prevent the substitution of the alt text, we need to
4421: # be sure the orig_src file is on system now so:
4422:
4423: if (! -e $orig_src) {
4424: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4425: }
4426: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4427: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4428: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4429: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4430: &Apache::lonxml::debug("Filelocation gives: $src");
4431: if (! -e $src) {
4432: &Apache::lonxml::debug("$src does not exist");
4433: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4434: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4435: #if replication failed try to find ps file
4436: $src=~s/\.eps$/\.ps/;
4437: &Apache::lonxml::debug("Now looking for $src");
4438: #if no ps file try to replicate it.
4439: my $didrepcopy = &Apache::lonnet::repcopy($src);
4440: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4441: if ( (not -e $src) ||
4442: ($didrepcopy ne 'ok')) {
4443: &Apache::lonxml::debug("Failed to find or replicate $src");
4444:
4445: #if replication failed try to produce eps file dynamically
4446: $src=~s/\.ps$/\.eps/;
4447: my $temp_file;
4448: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4449: my $newsrc=$orig_src;
4450: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4451: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4452: print FILE ("$newsrc\n");
4453: close(FILE);
4454: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4455: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4456: if ($sext ne "") { # Put the ext. back in to uniquify.
4457: $src =~ s/\.eps$/$sext.eps/;
4458: }
4459:
4460: }
4461:
4462: }
4463: } else {
4464: # If the postscript file has spaces in its name,
4465: # LaTeX will gratuitiously vomit. Therefore
4466: # queue such files for copy with " " replaced by "_".
4467: # printout.pm will know them by their .ps or .eps extensions.
4468: my $newsrc = $orig_src;
4469: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4470: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4471: print FILE "$src\n";
4472: close FILE;
4473: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4474: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4475: }
4476: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4477: $path =~ s/ /\_/g;
4478: $file =~ s/ /\_/g;
4479: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4480: return ($path.'/',$file);
4481: }
4482:
4483: sub eps_generation {
4484: my ($src,$file,$width_param) = @_;
4485: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4486: my $temp_file = Apache::File->new('>>'.$filename);
4487: print $temp_file "$src\n";
4488: my $newsrc = $src;
4489: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4490: $newsrc=~s{/home/httpd/html/res}{};
4491: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4492: $newsrc=~s{/\./}{/};
4493: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4494: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4495: $newsrc=~s{/home/httpd/lonUsers}{};
4496: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4497: }
4498: if ($newsrc=~m{/userfiles/}) {
4499: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4500: } else {
4501: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4502: }
4503: }
4504:
4505: sub file_path {
4506: my $src=shift;
4507: my ($file,$path);
4508: if ($src =~ m!(.*)/([^/]*)$!) {
4509: $file = $2;
4510: $path = $1.'/';
4511: }
4512: return $file,$path;
4513: }
4514: # Converts a measurement in to mm from any of
4515: # the other valid LaTeX units of measure.
4516: # If the units of measure are missing from the
4517: # parameter, it is assumed to be in and returned
4518: # with mm units of measure
4519: sub recalc {
4520: my $argument = shift;
4521: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4522: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4523: my $value=$1;
4524: my $units=$2;
4525: if ($units eq 'cm') {
4526: $value*=10;
4527: } elsif ($units eq 'in') {
4528: $value*=25.4;
4529: } elsif ($units eq 'pc') {
4530: $value*=(25.4*12/72.27);
4531: } elsif ($units eq 'pt') {
4532: $value*=(25.4/72.27);
4533: }
4534: return $value.' mm';
4535: }
4536:
4537: sub LATEX_length {
4538: my $garbage=shift;
4539: $garbage=~s/^\s+$//;
4540: $garbage=~s/^\s+(\S.*)/$1/;#space before
4541: $garbage=~s/(.*\S)\s+$/$1/;#space after
4542: $garbage=~s/(\s)+/$1/;#only one space
4543: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4544: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4545: $garbage=~s/([^\\])\$/$1/g;#$
4546: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4547: $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;
4548: $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;
4549: $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;
4550: $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;
4551: $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;
4552: $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;
4553: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4554: #remove some other LaTeX command
4555: $garbage=~s|\\(\w+)\\|\\|g;
4556: $garbage=~s|\\(\w+)(\s*)|$2|g;
4557: $garbage=~s|\+|11|g;
4558: my $value=length($garbage);
4559: return $value;
4560: }
4561:
4562: # Wrap image 'stuff' inside of the LaTeX required to implement
4563: # alignment:
4564: # align_tex_image(align, latex_rendering, image)
4565: # Where:
4566: # align - The HTML alignment specification.
4567: # latex_rendering - rendering hint for latex.
4568: # image - The LaTeX needed to insert the image itsef.
4569: # width,height - dimensions of the image.
4570: # Returns:
4571: # The 1/2 wrapped image and the stuff required to close the
4572: # wrappage. This allows e.g. randomlabel to insert more stuff
4573: # into the closure.
4574: #
4575: sub align_latex_image {
4576: my ($align, $latex_rendering, $image, $width, $height) = @_;
4577: my $currentstring; # The 1/2 wrapped image.
4578: my $closure; # The closure of the wrappage.
4579:
4580: # if it's none just return it back
4581: if ($latex_rendering eq 'none') {
4582: return ($image,'');
4583: }
4584:
4585: # If there's an alignment specification we need to honor it here.
4586: # For the horizontal alignments, we will also honor the
4587: # value of the latex specfication. The default is parbox,
4588: # and that's used for illegal values too.
4589: #
4590: # Even though we set a default alignment value, the user
4591: # could have given us an illegal value. In that case we
4592: # just use the default alignment of bottom..
4593: $currentstring = "\n% figurewrapping \n";
4594: if ($align eq "top") {
4595: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4596: $closure = '}';
4597: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4598: my $offset = $height/2;
4599: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4600: $closure = '}';
4601: } elsif ($align eq "left") {
4602: if ($latex_rendering eq "parpic") {
4603: $currentstring .= '\parpic[l]{'.$image;
4604: $closure = '}';
4605: } elsif ($latex_rendering eq "parbox") {
4606: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4607: .$image;
4608: $closure = '\end{minipage}';
4609: } elsif ($latex_rendering eq "wrapfigure"
4610: || $latex_rendering ne 'none') { # wrapfig render
4611: $currentstring .=
4612: '\begin{wrapfigure}{l}{'.$width.'mm}'
4613: .'\scalebox{1.0}{'.$image;
4614: $closure = '}\end{wrapfigure}';
4615: }
4616: } elsif ($align eq "right") {
4617: if ($latex_rendering eq "parpic") {
4618: $currentstring .= '\parpic[r]{'.$image;
4619: $closure = '}';
4620: } elsif ($latex_rendering eq "parbox") {
4621: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4622: .$image;
4623: $closure = '\end{minipage}';
4624: } elsif ($latex_rendering eq "wrapfigure"
4625: || $latex_rendering ne 'none') { # wrapfig render
4626: $currentstring .=
4627: '\begin{wrapfigure}{r}{'.$width.'mm}'
4628: .'\scalebox{1.0}{'.$image;
4629: $closure = '}\end{wrapfigure}';
4630: }
4631: } else { # Bottom is also default.
4632: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4633: $currentstring .= "{$image";
4634: $closure = '}';
4635: }
4636: $currentstring .= "\n% end wrappage\n";
4637: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4638: return ($currentstring, $closure);
4639: }
4640:
4641: # is_inside_of $tagstack $tag
4642: # This sub returns true if the current state of Xml processing
4643: # is inside of the tag.
4644: # Parameters:
4645: # tagstack - The tagstack from the parser.
4646: # tag - The tag (without the <>'s.).
4647: # Sample usage:
4648: # if (is_inside_of($tagstack "table")) {
4649: # # I'm in a table....
4650: # }
4651: sub is_inside_of {
4652: my ($tagstack, $tag) = @_;
4653: my @stack = @$tagstack;
4654: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4655: if ($stack[$i] eq $tag) {
4656: return 1;
4657: }
4658: }
4659: return 0;
4660: }
4661:
4662:
4663: 1;
4664: __END__
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