1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.379 2007/10/15 19:40:53 albertel Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50: use File::Basename;
51: use LONCAPA();
52: # use Data::Dumper;
53:
54: BEGIN {
55:
56: &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'));
57:
58: }
59:
60: #
61: # Dumps all elements of the table structure.
62: # Need this 'cause evidently when given an array, Data::Dumper only seems
63: # to dump element 0.
64: #
65: #sub debug_dump_table {
66: # my $lastrow = $#Apache::londefdef::table;
67: # &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
68: # my $row;
69: # for ($row =0; $row <= $lastrow; $row++ ) {
70: # my $text = Dumper($Apache::londefdef::table[$row]);
71: # &Apache::lonnet::logthis("table [ $row ]".$text);
72: # }
73: #}
74: sub initialize_londefdef {
75: $Apache::londefdef::TD_redirection=0;
76: @Apache::londefdef::table = ();
77: $Apache::londefdef::select=0;
78: undef(@Apache::londefdef::description);
79: @Apache::londefdef::DD=(0);
80: @Apache::londefdef::DT=(0);
81: @Apache::londefdef::seenDT=(0);
82: $Apache::londefdef::list_index=0;
83: undef($Apache::londefdef::head);
84: undef($Apache::londefdef::title);
85: }
86:
87: #======================= TAG SUBROUTINES =====================
88: #-- <output>
89: sub start_output {
90: my ($target) = @_;
91: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
92: return '';
93: }
94: sub end_output {
95: my ($target) = @_;
96: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
97: return '';
98: }
99: #-- <m> tag
100: sub start_m {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
102: my $currentstring = '';
103: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
104: if ($target eq 'web' || $target eq 'analyze') {
105: &Apache::lonxml::debug("M is starting with:$inside:");
106: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
107: if ($eval eq 'on') {
108: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
109: #&Apache::lonxml::debug("M is evaulated to:$inside:");
110: }
111: my $tex = $inside;
112: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
113: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
114: if ($Apache::lontexconvert::errorstring) {
115: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
116: $tex = &HTML::Entities::encode($tex,'<>&"');
117: my ($linenumber) =
118: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
119: if (defined($linenumber)) {
120: my @tex=split("\n",$tex);
121: $tex[$linenumber]='<b><font color="red">'.
122: $tex[$linenumber].'</font></b>';
123: $tex=join("\n",@tex);
124: }
125: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
126: $Apache::lontexconvert::errorstring='';
127: }
128: #&Apache::lonxml::debug("M is ends with:$currentstring:");
129: $Apache::lonxml::post_evaluate=0;
130: } elsif ($target eq 'tex') {
131:
132: $currentstring = $inside;
133: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
134: if ($eval eq 'on') {
135: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
136: }
137: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
138: # detect simple math mode entry exits, and convert them
139: # to use \ensuremath ... unless there's a \verb inside.
140: if (! ($currentstring=~/\\verb/)) {
141: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
142: $currentstring=~s/^(\s*)\$/$1/;
143: $currentstring=~s/\$(\s*)$/$1/;
144: $currentstring='\ensuremath{'.$currentstring.'}';
145: }
146: }
147: $Apache::lonxml::post_evaluate=0;
148: }
149: return $currentstring;
150: }
151:
152: sub end_m {
153: my ($target,$token) = @_;
154: my $currentstring = '';
155: if ($target eq 'tex') {
156: $currentstring = "";
157: }
158: return $currentstring;
159: }
160:
161: sub start_tthoption {
162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
163: my $result;
164: if ($target eq 'web' || $target eq 'webgrade') {
165: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
166: $style);
167: $inside=~s/^\s*//;
168: if ($env{'browser.mathml'}) {
169: &tth::ttmoptions($inside);
170: } else {
171: &tth::tthoptions($inside);
172: }
173: }
174: return $result;
175: }
176:
177: sub end_tthoption {
178: my ($target,$token) = @_;
179: my $result;
180: return $result;
181: }
182:
183: #-- <html> tag (end tag optional)
184: sub start_html {
185: my ($target,$token) = @_;
186: my $currentstring = '';
187: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
188: # start_body() takes care of emitting the <html>
189: } elsif ($target eq 'tex') {
190: $currentstring .=
191: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
192: if (($env{'form.latex_type'}=~'batchmode') ||
193: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
194: $currentstring .= '\newcommand{\keephidden}[1]{}'.
195: '\renewcommand{\deg}{$^{\circ}$}'.
196: '\usepackage{multirow}'.
197: '\usepackage{longtable}'.
198: '\usepackage{textcomp}'.
199: '\usepackage{makeidx}'.
200: '\usepackage[dvips]{graphicx}'.
201: '\usepackage{wrapfig}'.
202: '\usepackage{picins}'.
203: '\usepackage{epsfig}'.
204: '\usepackage{calc}'.
205: '\usepackage{amsmath}'.
206: '\usepackage{amssymb}'.
207: '\usepackage{amsfonts}'.
208: '\usepackage{amsthm}'.
209: '\usepackage{amscd}'.
210: '\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}}'.
211: '\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}}';
212: }
213: return $currentstring;
214: }
215:
216: sub end_html {
217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
218: my $currentstring = '';
219: if ($target eq 'web' || $target eq 'webgrade') {
220: # end_body takes care of the </html>
221: }
222: return $currentstring;
223: }
224:
225: #-- <head> tag (end tag optional)
226: sub start_head {
227: my ($target,$token) = @_;
228: my $currentstring = '';
229: if ($target eq 'web' || $target eq 'webgrade') {
230: &Apache::lonxml::startredirection();
231: }
232: return $currentstring;
233: }
234:
235: sub end_head {
236: my ($target,$token) = @_;
237: my $currentstring = '';
238: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
239: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
240: # in case there is a </head> but no <head>
241: if ($Apache::lonxml::redirection) {
242: $Apache::londefdef::head = &Apache::lonxml::endredirection();
243: }
244: }
245: return $currentstring;
246: }
247:
248: #-- <map> tag (end tag required)
249: sub start_map {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[4];
254: }
255: return $currentstring;
256: }
257:
258: sub end_map {
259: my ($target,$token) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[2];
263: }
264: return $currentstring;
265: }
266:
267: #-- <select> tag (end tag required)
268: sub start_select {
269: my ($target,$token) = @_;
270: my $currentstring = '';
271: if ($target eq 'web' || $target eq 'webgrade') {
272: $currentstring = $token->[4];
273: } elsif ($target eq 'tex') {
274: $Apache::londefdef::select=0;
275: }
276: return $currentstring;
277: }
278:
279: sub end_select {
280: my ($target,$token) = @_;
281: my $currentstring = '';
282: if ($target eq 'web' || $target eq 'webgrade') {
283: $currentstring = $token->[2];
284: }
285: return $currentstring;
286: }
287:
288: #-- <option> tag (end tag optional)
289: sub start_option {
290: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
291: my $currentstring = '';
292: if ($target eq 'web' || $target eq 'webgrade') {
293: $currentstring = $token->[4];
294: } elsif ($target eq 'tex') {
295: $Apache::londefdef::select++;
296: if ($Apache::londefdef::select == 1) {
297: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
298: } else {
299: $currentstring='\keephidden{';
300: }
301: }
302: return $currentstring;
303: }
304:
305: sub end_option {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[2];
310: } elsif ($target eq 'tex') {
311: $currentstring='}';
312: }
313: return $currentstring;
314: }
315:
316: #-- <input> tag (end tag forbidden)
317: sub start_input {
318: my ($target,$token) = @_;
319: my $currentstring = '';
320: if ($target eq 'web' || $target eq 'webgrade') {
321: $currentstring = $token->[4];
322: }
323: return $currentstring;
324: }
325:
326: sub end_input {
327: my ($target,$token) = @_;
328: my $currentstring = '';
329: if ($target eq 'web' || $target eq 'webgrade') {
330: $currentstring = $token->[2];
331: }
332: return $currentstring;
333: }
334:
335: #-- <textarea> tag (end tag required)
336: sub start_textarea {
337: my ($target,$token) = @_;
338: my $currentstring = '';
339: if ($target eq 'web' || $target eq 'webgrade') {
340: $currentstring = $token->[4];
341: }
342: return $currentstring;
343: }
344:
345: sub end_textarea {
346: my ($target,$token) = @_;
347: my $currentstring = '';
348: if ($target eq 'web' || $target eq 'webgrade') {
349: $currentstring = $token->[2];
350: }
351: return $currentstring;
352: }
353:
354: #-- <form> tag (end tag required)
355: sub start_form {
356: my ($target,$token) = @_;
357: my $currentstring = '';
358: if ($target eq 'web' || $target eq 'webgrade') {
359: $currentstring = $token->[4];
360: }
361: return $currentstring;
362: }
363:
364: sub end_form {
365: my ($target,$token) = @_;
366: my $currentstring = '';
367: if ($target eq 'web' || $target eq 'webgrade') {
368: $currentstring = $token->[2];
369: }
370: return $currentstring;
371: }
372:
373: #-- <title> tag (end tag required)
374: sub start_title {
375: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
376: my $currentstring = '';
377: if ($target eq 'web' || $target eq 'webgrade') {
378: $Apache::londefdef::title =
379: &Apache::lonxml::get_all_text('/title',$parser,$style);
380: } elsif ($target eq 'tex') {
381: $currentstring .= '\keephidden{Title of the document: '
382: }
383: if ($target eq 'meta') {
384: $currentstring='<title>';
385: &start_output($target);
386: }
387: return $currentstring;
388: }
389:
390: sub end_title {
391: my ($target,$token) = @_;
392: my $currentstring = '';
393: if ($target eq 'web' || $target eq 'webgrade') {
394: # start_title takes care of swallowing the title
395: } elsif ($target eq 'tex') {
396: $currentstring .= '}';
397: }
398: if ($target eq 'meta') {
399: &end_output($target);
400: $currentstring='</title>';
401: }
402: return $currentstring;
403: }
404:
405: #-- <meta> tag (end tag forbidden)
406: sub start_meta {
407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
408: my $currentstring = '';
409: if ($target eq 'web' || $target eq 'webgrade') {
410: my $args='';
411: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
412: if ($args eq '') {
413: &Apache::lonxml::get_all_text("/meta",$parser,$style);
414: } else {
415: $currentstring = $token->[4];
416: }
417: } elsif ($target eq 'meta') {
418: unless (&Apache::lonxml::get_param
419: ('http-equiv',$parstack,$safeeval,undef,1)) {
420: my $name=$token->[2]->{'name'};
421: $name=~tr/A-Z/a-z/;
422: $name=~s/\s/\_/gs;
423: $name=~s/\W//gs;
424: if ($name) {
425: $currentstring='<'.$name;
426: my $display=&Apache::lonxml::get_param
427: ('display',$parstack,$safeeval,undef,1);
428: if ($display) {
429: $display=~s/\"/\'/g;
430: $currentstring.=' display="'.$display.'"';
431: }
432: $currentstring.='>'.
433: &Apache::lonxml::get_param
434: ('content',$parstack,$safeeval,undef,1).
435: '</'.$name.'>';
436: }
437: my $display=&Apache::lonxml::get_param
438: ('display',$parstack,$safeeval,undef,1);
439: if ($display) {
440: $display=&HTML::Entities::encode($display,'<>&"');
441: $currentstring.='<'.$name.'.display>'.$display.
442: '</'.$name.'.display>';
443: }
444: }
445: } elsif ($target eq 'tex') {
446: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
447: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
448: if ((not defined $content) && (not defined $name)) {
449: &Apache::lonxml::startredirection();
450: }
451: } elsif ($target eq 'edit') {
452: $currentstring .= &Apache::edit::tag_start($target,$token);
453: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
454: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
455: $currentstring .= &Apache::edit::end_row();
456: } elsif ($target eq 'modified') {
457: my $constructtag =
458: &Apache::edit::get_new_args($token,$parstack,$safeeval,
459: 'name','content');
460: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
461: }
462: return $currentstring;
463: }
464:
465: sub end_meta {
466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
467: my $currentstring = '';
468: if ($target eq 'web' || $target eq 'webgrade') {
469: my $args='';
470: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
471: if ($args ne '') {
472: $currentstring = $token->[4];
473: }
474: } elsif ($target eq 'tex') {
475: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
476: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
477: if ((not defined $content) && (not defined $name)) {
478: &Apache::lonxml::endredirection();
479: }
480: }
481: return $currentstring;
482: }
483:
484: sub insert_meta {
485: return '
486: <meta />';
487: }
488:
489: # accessrule
490: sub start_accessrule {
491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
492: my $currentstring = '';
493: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
494: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
495: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
496: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
497:
498: my ($dom,$crs,$sec,$separator);
499: if ($type eq 'user') {
500: ($dom,$crs,$sec)=split(m{/},$realm);
501: $crs = &LONCAPA::clean_username($crs);
502: $separator = '/';
503: } else {
504: ($dom,$crs,$sec)=split(/\_/,$realm);
505: $crs = &LONCAPA::clean_courseid($crs);
506: $separator = '_';
507: }
508: $dom = &LONCAPA::clean_domain($dom);
509:
510: $sec =~s/\W//;
511: $realm = $dom;
512: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
513: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
514: $role=~s/\W//g;
515:
516: if ($target eq 'web') {
517: my $args='';
518: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
519: if ($args eq '') {
520: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
521: } else {
522: $currentstring = $token->[4];
523: }
524: }
525: if ($target eq 'meta') {
526: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
527: }
528: return $currentstring;
529: }
530:
531: sub end_accessrule {
532: my ($target,$token,$tagstack,$parstack,$parser) = @_;
533: my $currentstring = '';
534: if ($target eq 'web') {
535: my $args='';
536: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
537: if ($args ne '') {
538: $currentstring = $token->[4];
539: }
540: }
541: return $currentstring;
542: }
543:
544: sub generate_css_links {
545: my $links;
546: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
547: if ($css_href =~ /\S/) {
548: &Apache::lonxml::extlink($css_href);
549: $links .=
550: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
551: }
552: return $links;
553: }
554:
555: #-- <body> tag (end tag required)
556: sub start_body {
557: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
558: my $currentstring = '';
559:
560: if ($target eq 'web' || $target eq 'webgrade') {
561: if ($Apache::lonhomework::parsing_a_problem) {
562: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
563: return '';
564: }
565:
566: if (&is_inside_of($tagstack, "head")) {
567: &end_head(@_);
568: }
569:
570: my $extra_head = &generate_css_links();
571:
572: $currentstring =
573: &Apache::loncommon::start_page($Apache::londefdef::title,
574: $Apache::londefdef::head
575: .$extra_head,
576: {'add_entries' => $token->[2],
577: 'no_title' => 1,
578: 'force_register' => 1});
579:
580: if ($env{'request.state'} ne 'published') {
581: $currentstring.=&Apache::lonmenu::constspaceform();
582: $currentstring.=&Apache::londefdef::edit_controls();
583: }
584: $currentstring.=&Apache::lonxml::message_location();
585: } elsif ($target eq 'tex') {
586: $currentstring = '\begin{document}';
587: }
588: return $currentstring;
589: }
590:
591: sub edit_controls {
592: my $result .= (<<EDITBUTTON);
593: <form method="post">
594: <input type="submit" name="editmode" accesskey="e" value="Edit" />
595: </form>
596: <br />
597: EDITBUTTON
598: return $result;
599: }
600:
601: sub end_body {
602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
603: my $currentstring = &end_p(); # Close off unclosed <p>
604: if ($target eq 'web' || $target eq 'webgrade') {
605: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
606: } elsif ($target eq 'tex') {
607: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
608: }
609: return $currentstring;
610: }
611:
612: # \begin{center} causes a new paragprah spacing that looks odd inside
613: # of a table cell. Same at the end of a \center but with a slightly
614: # larger space .. hence center_correction and center_end_correction.
615: #
616: sub center_correction { return '\vspace*{-6 mm}'; }
617: sub center_end_correction { return '\vspace*{-7 mm}'; }
618:
619: #-- <center> tag (end tag required)
620: sub start_center {
621: my ($target,$token,$tagstack) = @_;
622: my $currentstring = &end_p(); # Close off any prior para.
623: if ($target eq 'web' || $target eq 'webgrade') {
624: $currentstring .= $token->[4];
625: } elsif ($target eq 'tex') {
626: if (&is_inside_of($tagstack, "table")) {
627: $currentstring .= ¢er_correction();
628: }
629: $currentstring .= '\begin{center}';
630: }
631: return $currentstring;
632: }
633:
634: sub end_center {
635: my ($target,$token,$tagstack) = @_;
636: my $currentstring = '';
637: if ($target eq 'web' || $target eq 'webgrade') {
638: $currentstring = $token->[2];
639: } elsif ($target eq 'tex') {
640: $currentstring = '\end{center}';
641: if (&is_inside_of($tagstack, "table")) {
642: $currentstring .= ¢er_end_correction();
643: }
644: }
645: return $currentstring;
646: }
647:
648: #-- <b> tag (end tag required)
649: # NOTE: In TeX mode disables internal <p>
650: sub start_b {
651: my ($target,$token) = @_;
652: my $currentstring = '';
653: if ($target eq 'web' || $target eq 'webgrade') {
654: $currentstring = $token->[4];
655: } elsif ($target eq 'tex') {
656: &disable_para();
657: $currentstring .= '\textbf{';
658: }
659: return $currentstring;
660: }
661:
662: sub end_b {
663: my ($target,$token) = @_;
664: my $currentstring = '';
665: if ($target eq 'web' || $target eq 'webgrade') {
666: $currentstring = $token->[2];
667: } elsif ($target eq 'tex') {
668: &enable_para();
669: $currentstring = '}';
670: }
671: return $currentstring;
672: }
673:
674: #-- <strong> tag (end tag required)
675: # NOTE: in TeX mode disables internal <p>
676: sub start_strong {
677: my ($target,$token) = @_;
678: my $currentstring = '';
679: if ($target eq 'web' || $target eq 'webgrade') {
680: $currentstring = $token->[4];
681: } elsif ($target eq 'tex') {
682: &disable_para();
683: $currentstring = '\textbf{';
684: }
685: return $currentstring;
686: }
687:
688: sub end_strong {
689: my ($target,$token) = @_;
690: my $currentstring = '';
691: if ($target eq 'web' || $target eq 'webgrade') {
692: $currentstring = $token->[2];
693: } elsif ($target eq 'tex') {
694: &enable_para();
695: $currentstring = '}';
696: }
697: return $currentstring;
698: }
699:
700: #-- <h1> tag (end tag required)
701: sub start_h1 {
702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
703: my $currentstring = &end_p(); # Close off any prior para.
704: if ($target eq 'web' || $target eq 'webgrade') {
705: $currentstring .= $token->[4];
706: } elsif ($target eq 'tex') {
707: my $pre;
708: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
709: if ($align eq 'center') {
710: $pre='\begin{center}';
711: } elsif ($align eq 'left') {
712: $pre='\rlap{';
713: } elsif ($align eq 'right') {
714: $pre=' \hfill \llap{';
715: }
716: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
717: if (not defined $TeXsize) {$TeXsize="large";}
718: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
719: } elsif ($target eq 'meta') {
720: $currentstring.='<subject>';
721: &start_output($target);
722: }
723: return $currentstring;
724: }
725:
726: sub end_h1 {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
728: my $currentstring = '';
729: if ($target eq 'web' || $target eq 'webgrade') {
730: $currentstring .= $token->[2];
731: } elsif ($target eq 'tex') {
732: my $post='\vskip 0 mm ';
733: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
734: if ($align eq 'center') {
735: $post='\end{center}';
736: } elsif ($align eq 'left') {
737: $post='} \hfill'.'\vskip 0 mm ';
738: } elsif ($align eq 'right') {
739: $post='}'.'\vskip 0 mm ';
740: }
741: $currentstring .= '}}'.$post;
742: } elsif ($target eq 'meta') {
743: &end_output($target);
744: $currentstring='</subject>';
745: }
746: return $currentstring;
747: }
748:
749: #-- <h2> tag
750: sub start_h2 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = &end_p(); # Close off any prior para.
753: if ($target eq 'web' || $target eq 'webgrade') {
754: $currentstring .= $token->[4];
755: } elsif ($target eq 'tex') {
756: my $pre;
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $pre='\begin{center}';
760: } elsif ($align eq 'left') {
761: $pre='\rlap{';
762: } elsif ($align eq 'right') {
763: $pre=' \hfill \llap{';
764: }
765: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
766: if (not defined $TeXsize) {$TeXsize="large";}
767: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
768: }
769: return $currentstring;
770: }
771:
772: sub end_h2 {
773: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
774: my $currentstring = '';
775: if ($target eq 'web' || $target eq 'webgrade') {
776: $currentstring .= $token->[2];
777: } elsif ($target eq 'tex') {
778: my $post='\vskip 0 mm ';
779: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
780: if ($align eq 'center') {
781: $post='\end{center}';
782: } elsif ($align eq 'left') {
783: $post='} \hfill'.'\vskip 0 mm ';
784: } elsif ($align eq 'right') {
785: $post='}'.'\vskip 0 mm ';
786: }
787: $currentstring .= '}}'.$post;
788: }
789: return $currentstring;
790: }
791:
792: #-- <h3> tag
793: sub start_h3 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = &end_p(); # Close off any prior para.
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[4];
798: } elsif ($target eq 'tex') {
799: my $pre;
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $pre='\begin{center}';
803: } elsif ($align eq 'left') {
804: $pre='\rlap{';
805: } elsif ($align eq 'right') {
806: $pre=' \hfill \llap{';
807: }
808: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
809: if (not defined $TeXsize) {$TeXsize="large";}
810: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
811: }
812: return $currentstring;
813: }
814:
815: sub end_h3 {
816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
817: my $currentstring = '';
818: if ($target eq 'web' || $target eq 'webgrade') {
819: $currentstring .= $token->[2];
820: } elsif ($target eq 'tex') {
821: my $post='\vskip 0 mm ';
822: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
823: if ($align eq 'center') {
824: $post='\end{center}';
825: } elsif ($align eq 'left') {
826: $post='} \hfill'.'\vskip 0 mm ';
827: } elsif ($align eq 'right') {
828: $post='}'.'\vskip 0 mm ';
829: }
830: $currentstring .= '}}'.$post;
831: }
832: return $currentstring;
833: }
834:
835: #-- <h4> tag
836: sub start_h4 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = &end_p(); # Close off any prior para.
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[4];
841: } elsif ($target eq 'tex') {
842: my $pre;
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $pre='\begin{center}';
846: } elsif ($align eq 'left') {
847: $pre='\rlap{';
848: } elsif ($align eq 'right') {
849: $pre=' \hfill \llap{';
850: }
851: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
852: if (not defined $TeXsize) {$TeXsize="large";}
853: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
854: }
855: return $currentstring;
856: }
857:
858: sub end_h4 {
859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
860: my $currentstring = '';
861: if ($target eq 'web' || $target eq 'webgrade') {
862: $currentstring .= $token->[2];
863: } elsif ($target eq 'tex') {
864: my $post='\vskip 0 mm ';
865: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
866: if ($align eq 'center') {
867: $post='\end{center}';
868: } elsif ($align eq 'left') {
869: $post='} \hfill'.'\vskip 0 mm ';
870: } elsif ($align eq 'right') {
871: $post='}'.'\vskip 0 mm ';
872: }
873: $currentstring .= '}}'.$post;
874: }
875: return $currentstring;
876: }
877:
878: #-- <h5> tag
879: sub start_h5 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = &end_p(); # Close off any prior paras.
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[4];
884: } elsif ($target eq 'tex') {
885: my $pre;
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $pre='\begin{center}';
889: } elsif ($align eq 'left') {
890: $pre='\rlap{';
891: } elsif ($align eq 'right') {
892: $pre=' \hfill \llap{';
893: }
894: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
895: if (not defined $TeXsize) {$TeXsize="large";}
896: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
897: }
898: return $currentstring;
899: }
900:
901: sub end_h5 {
902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
903: my $currentstring = '';
904: if ($target eq 'web' || $target eq 'webgrade') {
905: $currentstring .= $token->[2];
906: } elsif ($target eq 'tex') {
907: my $post='\vskip 0 mm ';
908: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
909: if ($align eq 'center') {
910: $post='\end{center}';
911: } elsif ($align eq 'left') {
912: $post='} \hfill'.'\vskip 0 mm ';
913: } elsif ($align eq 'right') {
914: $post='}'.'\vskip 0 mm ';
915: }
916: $currentstring .= '}}'.$post;
917: }
918: return $currentstring;
919: }
920:
921: #-- <h6> tag
922: sub start_h6 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = &end_p(); # Close off any prior paras.
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[4];
927: } elsif ($target eq 'tex') {
928: my $pre;
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $pre='\begin{center}';
932: } elsif ($align eq 'left') {
933: $pre='\rlap{';
934: } elsif ($align eq 'right') {
935: $pre=' \hfill \llap{';
936: }
937: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
938: if (not defined $TeXsize) {$TeXsize="large";}
939: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
940: }
941: return $currentstring;
942: }
943:
944: sub end_h6 {
945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
946: my $currentstring = '';
947: if ($target eq 'web' || $target eq 'webgrade') {
948: $currentstring .= $token->[2];
949: } elsif ($target eq 'tex') {
950: my $post='\vskip 0 mm ';
951: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
952: if ($align eq 'center') {
953: $post='\end{center}';
954: } elsif ($align eq 'left') {
955: $post='} \hfill'.'\vskip 0 mm ';
956: } elsif ($align eq 'right') {
957: $post='}'.'\vskip 0 mm ';
958: }
959: $currentstring .= '}}'.$post;
960: }
961: return $currentstring;
962: }
963:
964: #--- <cite> tag (end tag required)
965: sub start_cite {
966: my ($target,$token) = @_;
967: my $currentstring = '';
968: if ($target eq 'web' || $target eq 'webgrade') {
969: $currentstring .= $token->[4];
970: } elsif ($target eq 'tex') {
971: $currentstring .= '\textit{';
972: }
973: return $currentstring;
974: }
975:
976: sub end_cite {
977: my ($target,$token) = @_;
978: my $currentstring = '';
979: if ($target eq 'web' || $target eq 'webgrade') {
980: $currentstring .= $token->[2];
981: } elsif ($target eq 'tex') {
982: $currentstring .= '}';
983: }
984: return $currentstring;
985: }
986:
987: #-- <i> tag (end tag required)
988: sub start_i {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web' || $target eq 'webgrade') {
992: $currentstring .= $token->[4];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '\textit{';
995: }
996: return $currentstring;
997: }
998:
999: sub end_i {
1000: my ($target,$token) = @_;
1001: my $currentstring = '';
1002: if ($target eq 'web' || $target eq 'webgrade') {
1003: $currentstring .= $token->[2];
1004: } elsif ($target eq 'tex') {
1005: $currentstring .= '}';
1006: }
1007: return $currentstring;
1008: }
1009:
1010: #-- <address> tag (end tag required)
1011: sub start_address {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web' || $target eq 'webgrade') {
1015: $currentstring .= $token->[4];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '\textit{';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: sub end_address {
1023: my ($target,$token) = @_;
1024: my $currentstring = '';
1025: if ($target eq 'web' || $target eq 'webgrade') {
1026: $currentstring .= $token->[2];
1027: } elsif ($target eq 'tex') {
1028: $currentstring .= '}';
1029: }
1030: return $currentstring;
1031: }
1032:
1033: #-- <dfn> tag (end tag required)
1034: sub start_dfn {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web' || $target eq 'webgrade') {
1038: $currentstring .= $token->[4];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '\textit{';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: sub end_dfn {
1046: my ($target,$token) = @_;
1047: my $currentstring = '';
1048: if ($target eq 'web' || $target eq 'webgrade') {
1049: $currentstring .= $token->[2];
1050: } elsif ($target eq 'tex') {
1051: $currentstring .= '}';
1052: }
1053: return $currentstring;
1054: }
1055:
1056: #-- <tt> tag (end tag required)
1057: sub start_tt {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web' || $target eq 'webgrade') {
1061: $currentstring .= $token->[4];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '\texttt{';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: sub end_tt {
1069: my ($target,$token) = @_;
1070: my $currentstring = '';
1071: if ($target eq 'web' || $target eq 'webgrade') {
1072: $currentstring .= $token->[2];
1073: } elsif ($target eq 'tex') {
1074: $currentstring .= '}';
1075: }
1076: return $currentstring;
1077: }
1078:
1079: #-- <kbd> tag (end tag required)
1080: sub start_kbd {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web' || $target eq 'webgrade') {
1084: $currentstring .= $token->[4];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '\texttt{';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: sub end_kbd {
1092: my ($target,$token) = @_;
1093: my $currentstring = '';
1094: if ($target eq 'web' || $target eq 'webgrade') {
1095: $currentstring .= $token->[2];
1096: } elsif ($target eq 'tex') {
1097: $currentstring .= '}';
1098: }
1099: return $currentstring;
1100: }
1101:
1102: #-- <code> tag (end tag required)
1103: sub start_code {
1104: my ($target,$token) = @_;
1105: my $currentstring = '';
1106: if ($target eq 'web' || $target eq 'webgrade') {
1107: $currentstring .= $token->[4];
1108: } elsif ($target eq 'tex') {
1109: $currentstring .= '\texttt{';
1110: }
1111: return $currentstring;
1112: }
1113:
1114: sub end_code {
1115: my ($target,$token) = @_;
1116: my $currentstring = '';
1117: if ($target eq 'web' || $target eq 'webgrade') {
1118: $currentstring .= $token->[2];
1119: } elsif ($target eq 'tex') {
1120: $currentstring .= '}';
1121: }
1122: return $currentstring;
1123: }
1124:
1125: #-- <em> tag (end tag required)
1126: sub start_em {
1127: my ($target,$token) = @_;
1128: my $currentstring = '';
1129: if ($target eq 'web' || $target eq 'webgrade') {
1130: $currentstring .= $token->[4];
1131: } elsif ($target eq 'tex') {
1132: $currentstring .= '\emph{';
1133: }
1134: return $currentstring;
1135: }
1136:
1137: sub end_em {
1138: my ($target,$token) = @_;
1139: my $currentstring = '';
1140: if ($target eq 'web' || $target eq 'webgrade') {
1141: $currentstring .= $token->[2];
1142: } elsif ($target eq 'tex') {
1143: $currentstring .= '}';
1144: }
1145: return $currentstring;
1146: }
1147:
1148: #-- <q> tag (end tag required)
1149: sub start_q {
1150: my ($target,$token) = @_;
1151: my $currentstring = '';
1152: if ($target eq 'web' || $target eq 'webgrade') {
1153: $currentstring .= $token->[4];
1154: } elsif ($target eq 'tex') {
1155: $currentstring .= '\emph{';
1156: }
1157: return $currentstring;
1158: }
1159:
1160: sub end_q {
1161: my ($target,$token) = @_;
1162: my $currentstring = '';
1163: if ($target eq 'web' || $target eq 'webgrade') {
1164: $currentstring .= $token->[2];
1165: } elsif ($target eq 'tex') {
1166: $currentstring .= '}';
1167: }
1168: return $currentstring;
1169: }
1170:
1171: # <p> is a bit strange since it does not require a closing </p>
1172: # However in latex, we must often output closing stuff to end
1173: # environments and {}'s etc. Therefore we do all the work
1174: # of figuring out the ending strings in the start tag processing,
1175: # and provide a mechanism to output the stop text external
1176: # to tag processing.
1177: #
1178: {
1179:
1180: my $closing_string = ''; # String required to close <p>
1181:
1182: # Some tags are <p> fragile meaning that <p> inside of them
1183: # does not work within TeX mode. This is managed via the
1184: # counter below:
1185: #
1186:
1187: my $para_disabled = 0;
1188:
1189: sub disable_para {
1190: $para_disabled++;
1191: }
1192: sub enable_para {
1193: $para_disabled--;
1194: }
1195:
1196:
1197: #-- <p> tag (end tag optional)
1198: #optional attribute - align="center|left|right"
1199: sub start_p {
1200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web' || $target eq 'webgrade') {
1203: $currentstring .= &end_p(); # close off prior para if in progress.
1204: $currentstring .= $token->[4];
1205: if (! ($currentstring =~ /\//)) {
1206: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1207: }
1208: } elsif ($target eq 'tex' && !$para_disabled) {
1209:
1210: $currentstring .= &end_p(); # close off prior para if in progress.
1211: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1212: if ($align eq 'center') {
1213: $currentstring .='\begin{center}\par ';
1214: $closing_string = '\end{center}';
1215: if (&is_inside_of($tagstack, "table")) {
1216: $currentstring = ¢er_correction().$currentstring;
1217: }
1218: } elsif ($align eq 'right') {
1219: $currentstring.="\n".'{\flushright ';
1220: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1221: $closing_string= "}\n";
1222: } elsif ($align eq 'left') {
1223: $currentstring.= "\n".'{\flushleft ';
1224: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1225: $closing_string = "}\n";
1226: } else {
1227: $currentstring.='\par ';
1228: if (&is_inside_of($tagstack, 'table')) {
1229: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1230: } else {
1231: $closing_string = '\strut\\\\\strut ';
1232: }
1233: }
1234:
1235: }
1236: return $currentstring;
1237: }
1238: #
1239: # End paragraph processing just requires that we output the
1240: # closing string that was saved and blank it.
1241: sub end_p {
1242: # Note only 'tex' mode uses disable_para and enable_para
1243: # so we don't need to know the target in the check below:
1244:
1245: if (!$para_disabled) {
1246: my $current_string = $closing_string;
1247: $closing_string = ''; # Not in a para anymore.
1248: return $current_string;
1249: } else {
1250: return '';
1251: }
1252:
1253: }
1254: }
1255: #-- <br> tag (end tag forbidden)
1256: sub start_br {
1257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1258: my $currentstring = '';
1259: if ($target eq 'web' || $target eq 'webgrade') {
1260: $currentstring .= $token->[4];
1261: } elsif ($target eq 'tex') {
1262: my @tempo=@$tagstack;
1263: my $signal=0;
1264: # Not going to factor this to is_inside_of since that would require
1265: # multiple stack traversals.
1266: #
1267: for (my $i=$#tempo;$i>=0;$i--) {
1268: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1269: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1270: $signal=1;
1271: }
1272: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1273: $signal = 1;
1274: }
1275: }
1276: if ($signal != 1) {
1277: $currentstring .= '\strut \\\\ \strut ';
1278: }
1279:
1280: }
1281: return $currentstring;
1282: }
1283:
1284: sub end_br {
1285: my ($target,$token) = @_;
1286: my $currentstring = '';
1287: if ($target eq 'web' || $target eq 'webgrade') {
1288: $currentstring .= $token->[2];
1289: }
1290: return $currentstring;
1291: }
1292:
1293: #-- <big> tag (end tag required)
1294: sub start_big {
1295: my ($target,$token) = @_;
1296: my $currentstring = '';
1297: if ($target eq 'web' || $target eq 'webgrade') {
1298: $currentstring .= $token->[4];
1299: } elsif ($target eq 'tex') {
1300: $currentstring .= '{\large ';
1301: }
1302: return $currentstring;
1303: }
1304:
1305: sub end_big {
1306: my ($target,$token) = @_;
1307: my $currentstring = '';
1308: if ($target eq 'web' || $target eq 'webgrade') {
1309: $currentstring .= $token->[2];
1310: } elsif ($target eq 'tex') {
1311: $currentstring .= '}';
1312: }
1313: return $currentstring;
1314: }
1315:
1316: #-- <small> tag (end tag required)
1317: sub start_small {
1318: my ($target,$token) = @_;
1319: my $currentstring = '';
1320: if ($target eq 'web' || $target eq 'webgrade') {
1321: $currentstring .= $token->[4];
1322: } elsif ($target eq 'tex') {
1323: $currentstring .= '{\footnotesize ';
1324: }
1325: return $currentstring;
1326: }
1327:
1328: sub end_small {
1329: my ($target,$token) = @_;
1330: my $currentstring = '';
1331: if ($target eq 'web' || $target eq 'webgrade') {
1332: $currentstring .= $token->[2];
1333: } elsif ($target eq 'tex') {
1334: $currentstring .= '}';
1335: }
1336: return $currentstring;
1337: }
1338:
1339: #-- <basefont> tag (end tag forbidden)
1340: sub start_basefont {
1341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring = $token->[4];
1345: } elsif ($target eq 'tex') {
1346: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1347: if (defined $basesize) {
1348: $currentstring = '{\\'.$basesize.' ';
1349: }
1350: }
1351: return $currentstring;
1352: }
1353:
1354: sub end_basefont {
1355: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1356: my $currentstring = '';
1357: if ($target eq 'web' || $target eq 'webgrade') {
1358: $currentstring = $token->[4];
1359: } elsif ($target eq 'tex') {
1360: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1361: if (defined $basesize) {
1362: $currentstring = '}';
1363: }
1364: }
1365: return $currentstring;
1366: }
1367:
1368: #-- <font> tag (end tag required)
1369: sub start_font {
1370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1371: my $currentstring = '';
1372: if ($target eq 'web' || $target eq 'webgrade') {
1373: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1374: if ($face!~/symbol/i) {
1375: if (($env{'browser.fontenhance'} eq 'on') ||
1376: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1377: }
1378: $currentstring = $token->[4];
1379: } elsif ($target eq 'tex') {
1380: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1381: if (defined $fontsize) {
1382: $currentstring = '{\\'.$fontsize.' ';
1383: }
1384: }
1385: return $currentstring;
1386: }
1387:
1388: sub end_font {
1389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1390: my $currentstring = '';
1391: if ($target eq 'web' || $target eq 'webgrade') {
1392: $currentstring = $token->[2];
1393: } elsif ($target eq 'tex') {
1394: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1395: if (defined $fontsize) {
1396: $currentstring = '}';
1397: }
1398: }
1399: return $currentstring;
1400: }
1401:
1402: #-- <strike> tag (end tag required)
1403: sub start_strike {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web' || $target eq 'webgrade') {
1407: $currentstring .= $token->[4];
1408: } elsif ($target eq 'tex') {
1409: &Apache::lonxml::startredirection();
1410: }
1411: return $currentstring;
1412: }
1413:
1414: sub end_strike {
1415: my ($target,$token) = @_;
1416: my $currentstring = '';
1417: if ($target eq 'web' || $target eq 'webgrade') {
1418: $currentstring .= $token->[2];
1419: } elsif ($target eq 'tex') {
1420: $currentstring=&Apache::lonxml::endredirection();
1421: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1422: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1423: $currentstring=~s/(\S)\s*$/$1\}/;
1424: }
1425: return $currentstring;
1426: }
1427:
1428: #-- <s> tag (end tag required)
1429: sub start_s {
1430: my ($target,$token) = @_;
1431: my $currentstring = '';
1432: if ($target eq 'web' || $target eq 'webgrade') {
1433: $currentstring .= $token->[4];
1434: } elsif ($target eq 'tex') {
1435: &Apache::lonxml::startredirection();
1436: }
1437: return $currentstring;
1438: }
1439:
1440: sub end_s {
1441: my ($target,$token) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web' || $target eq 'webgrade') {
1444: $currentstring .= $token->[2];
1445: } elsif ($target eq 'tex') {
1446: $currentstring=&Apache::lonxml::endredirection();
1447: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1448: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1449: $currentstring=~s/(\S)\s*$/$1\}/;
1450: }
1451: return $currentstring;
1452: }
1453:
1454: #-- <sub> tag (end tag required)
1455: sub start_sub {
1456: my ($target,$token) = @_;
1457: my $currentstring = '';
1458: if ($target eq 'web' || $target eq 'webgrade') {
1459: $currentstring .= $token->[4];
1460: } elsif ($target eq 'tex') {
1461: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1462: }
1463: return $currentstring;
1464: }
1465:
1466: sub end_sub {
1467: my ($target,$token) = @_;
1468: my $currentstring = '';
1469: if ($target eq 'web' || $target eq 'webgrade') {
1470: $currentstring .= $token->[2];
1471: } elsif ($target eq 'tex') {
1472: $currentstring .= '}}';
1473: }
1474: return $currentstring;
1475: }
1476:
1477: #-- <sup> tag (end tag required)
1478: sub start_sup {
1479: my ($target,$token) = @_;
1480: my $currentstring = '';
1481: if ($target eq 'web' || $target eq 'webgrade') {
1482: $currentstring .= $token->[4];
1483: } elsif ($target eq 'tex') {
1484: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1485: }
1486: return $currentstring;
1487: }
1488:
1489: sub end_sup {
1490: my ($target,$token) = @_;
1491: my $currentstring = '';
1492: if ($target eq 'web' || $target eq 'webgrade') {
1493: $currentstring .= $token->[2];
1494: } elsif ($target eq 'tex') {
1495: $currentstring .= '}}';
1496: }
1497: return $currentstring;
1498: }
1499:
1500: #-- <hr> tag (end tag forbidden)
1501: sub start_hr {
1502: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1503: my $currentstring = &end_p(); # End enclosing para.
1504: if ($target eq 'web' || $target eq 'webgrade') {
1505: $currentstring .= $token->[4];
1506: } elsif ($target eq 'tex') {
1507:
1508: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1509: #
1510: my $restart_sub = 0;
1511: my $restart_sup = 0;
1512:
1513: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1514: # using the start_ stop_ functions.. those tags only care about
1515: # $target.
1516:
1517: if (&is_inside_of($tagstack, "sub")) {
1518: $restart_sub = 1;
1519: $currentstring .= &end_sub($target, $token, $tagstack,
1520: $parstack, $parser, $safeeval);
1521: }
1522: if (&is_inside_of($tagstack, "sup")) {
1523: $restart_sup = 1;
1524: $currentstring .= &end_sup($target, $token, $tagstack,
1525: $parstack, $parser, $safeeval);
1526: }
1527:
1528: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1529: if (defined $LaTeXwidth) {
1530: if ($LaTeXwidth=~/^%/) {
1531: substr($LaTeXwidth,0,1)='';
1532: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1533: }
1534: } else {
1535: $LaTeXwidth ='0.9\textwidth';
1536: }
1537: my ($pre,$post);
1538: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1539: if (($align eq 'center') || (not defined $align)) {
1540: $pre=''; $post='';
1541: } elsif ($align eq 'left') {
1542: $pre='\rlap{'; $post='} \hfill';
1543: } elsif ($align eq 'right') {
1544: $pre=' \hfill \llap{'; $post='}';
1545: }
1546: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1547: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1548: # Turn stuff back on that we can't be inside of.
1549:
1550: if ($restart_sub) {
1551: $currentstring .= &start_sub($target, $token, $tagstack,
1552: $parstack, $parser, $safeeval);
1553: }
1554: if ($restart_sup) {
1555: $currentstring .= &start_sup($target, $token, $tagstack,
1556: $parstack, $parser, $safeeval);
1557: }
1558: }
1559: return $currentstring;
1560: }
1561:
1562: sub end_hr {
1563: my ($target,$token) = @_;
1564: my $currentstring = '';
1565: if ($target eq 'web' || $target eq 'webgrade') {
1566: $currentstring .= $token->[2];
1567: }
1568: return $currentstring;
1569: }
1570:
1571: #-- <div> tag (end tag required)
1572: {
1573:
1574: # Since div can be nested, the stack below is used
1575: # in 'tex' mode to store the ending strings
1576: # for the div stack.
1577:
1578: my @div_end_stack;
1579:
1580: sub start_div {
1581: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1582: my $currentstring = &end_p(); # Close enclosing para.
1583: if ($target eq 'web' || $target eq 'webgrade') {
1584: $currentstring .= $token->[4];
1585: }
1586: if ($target eq 'tex') {
1587: # 4 possible alignments: left, right, center, and -missing-.
1588:
1589: my $endstring = '';
1590:
1591: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1592: $safeeval, undef, 1));
1593: if ($align eq 'center') {
1594: $currentstring .= '\begin{center}';
1595: $endstring = '\end{center}';
1596: if (&is_inside_of($tagstack, "table")) {
1597: $currentstring = ¢er_correction().$currentstring;
1598: }
1599: }
1600: elsif ($align eq 'right') {
1601: $currentstring .= '\begin{flushright}';
1602: $endstring .= '\end{flushright}';
1603: } elsif ($align eq 'left') {
1604: $currentstring .= '\begin{flushleft}';
1605: $endstring = '\end{flushleft}';
1606: } else {
1607:
1608: }
1609: $currentstring .= "\n"; # For human readability.
1610: $endstring = "\n$endstring\n"; # For human readability
1611: push(@div_end_stack, $endstring);
1612: }
1613: return $currentstring;
1614: }
1615:
1616: sub end_div {
1617: my ($target,$token) = @_;
1618: my $currentstring = '';
1619: if ($target eq 'web' || $target eq 'webgrade') {
1620: $currentstring .= $token->[2];
1621: }
1622: if ($target eq 'tex') {
1623: my $endstring = pop @div_end_stack;
1624: $currentstring .= $endstring;
1625: }
1626: return $currentstring;
1627: }
1628: }
1629:
1630: #-- <a> tag (end tag required)
1631: sub start_a {
1632: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1633: my $currentstring = '';
1634: if ($target eq 'web' || $target eq 'webgrade') {
1635: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1636: undef,1);
1637: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1638: }
1639: return $currentstring;
1640: }
1641:
1642: sub end_a {
1643: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1644: my $currentstring = '';
1645: if ($target eq 'web' || $target eq 'webgrade') {
1646: $currentstring .= $token->[2];
1647: }
1648: if ($target eq 'tex') {
1649: my $href =
1650: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1651: my $name =
1652: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1653: if ($href =~ /\S/) {
1654: $href =~ s/([^\\])%/$1\\\%/g;
1655: # Substitute special symbols... and allow line breaks at each /
1656: #
1657: $href = &Apache::lonxml::latex_special_symbols($href);
1658: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1659: $currentstring .= ' ({\tt URI:'.$href.'})';
1660: } elsif ($name =~ /\S/) {
1661: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1662: } else {
1663: $currentstring.='';
1664: }
1665: }
1666: return $currentstring;
1667: }
1668:
1669: #-- <li> tag (end tag optional)
1670: sub start_li {
1671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1672: my $currentstring = '';
1673: if ($target eq 'web' || $target eq 'webgrade') {
1674: $currentstring = $token->[4];
1675: } elsif ($target eq 'tex') {
1676: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1677: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1678: #FIXME need to support types i and I
1679: if ($type=~/disc/) {
1680: $currentstring .= ' \item[$\bullet$] ';
1681: } elsif ($type=~/circle/) {
1682: $currentstring .= ' \item[$\circ$] ';
1683: } elsif ($type=~/square/) {
1684: $currentstring .= ' \item[$\diamond$] ';
1685: } elsif ($type eq '1') {
1686: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1687: } elsif ($type eq 'A') {
1688: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1689: } elsif ($type eq 'a') {
1690: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1691: } elsif ($value ne '') {
1692: $currentstring .= ' \item['.$value.'] ';
1693: } else {
1694: $currentstring .= ' \item ';
1695: }
1696: $Apache::londefdef::list_index++;
1697: }
1698: return $currentstring;
1699: }
1700:
1701: sub end_li {
1702: my ($target,$token) = @_;
1703: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1704: if ($target eq 'web' || $target eq 'webgrade') {
1705: $currentstring .= $token->[2];
1706: }
1707: return $currentstring;
1708: }
1709:
1710: #-- <u> tag (end tag required)
1711: sub start_u {
1712: my ($target,$token) = @_;
1713: my $currentstring = '';
1714: if ($target eq 'web' || $target eq 'webgrade') {
1715: $currentstring .= $token->[4];
1716: } elsif ($target eq 'tex') {
1717: &Apache::lonxml::startredirection();
1718: }
1719: return $currentstring;
1720: }
1721:
1722: sub end_u {
1723: my ($target,$token) = @_;
1724: my $currentstring = '';
1725: if ($target eq 'web' || $target eq 'webgrade') {
1726: $currentstring .= $token->[2];
1727: } elsif ($target eq 'tex') {
1728: $currentstring=&Apache::lonxml::endredirection();
1729: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1730: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1731: $currentstring=~s/(\S)\s*$/$1\}/;
1732: }
1733: return $currentstring;
1734: }
1735:
1736: #-- <ul> tag (end tag required)
1737: sub start_ul {
1738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1739: my $currentstring = &end_p(); # Close off enclosing list.
1740: if ($target eq 'web' || $target eq 'webgrade') {
1741: $currentstring .= $token->[4];
1742: } elsif ($target eq 'tex') {
1743: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1744: $Apache::londefdef::list_index=0;
1745: if ($TeXtype eq 'disc') {
1746: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1747: '\renewcommand{\labelitemii}{$\bullet$}'.
1748: '\renewcommand{\labelitemiii}{$\bullet$}'.
1749: '\renewcommand{\labelitemiv}{$\bullet$}';
1750: } elsif ($TeXtype eq 'circle') {
1751: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1752: '\renewcommand{\labelitemii}{$\circ$}'.
1753: '\renewcommand{\labelitemiii}{$\circ$}'.
1754: '\renewcommand{\labelitemiv}{$\circ$}';
1755: } elsif ($TeXtype eq 'square') {
1756: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1757: '\renewcommand{\labelitemii}{$\diamond$}'.
1758: '\renewcommand{\labelitemiii}{$\diamond$}'.
1759: '\renewcommand{\labelitemiv}{$\diamond$}';
1760: }
1761: $currentstring .= '\strut \begin{itemize}';
1762: }
1763: return $currentstring;
1764: }
1765:
1766: sub end_ul {
1767: my ($target,$token) = @_;
1768: my $currentstring = '';
1769: if ($target eq 'web' || $target eq 'webgrade') {
1770: $currentstring = $token->[2];
1771: } elsif ($target eq 'tex') {
1772: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1773: '\renewcommand{\labelitemii}{$\bullet$}'.
1774: '\renewcommand{\labelitemiii}{$\bullet$}'.
1775: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1776: }
1777: return $currentstring;
1778: }
1779:
1780: #-- <menu> tag (end tag required)
1781: sub start_menu {
1782: my ($target,$token) = @_;
1783: my $currentstring = '';
1784: if ($target eq 'web' || $target eq 'webgrade') {
1785: $currentstring = $token->[4];
1786: } elsif ($target eq 'tex') {
1787: $currentstring = " \\begin{itemize} ";
1788: }
1789: return $currentstring;
1790: }
1791:
1792: sub end_menu {
1793: my ($target,$token) = @_;
1794: my $currentstring = '';
1795: if ($target eq 'web' || $target eq 'webgrade') {
1796: $currentstring = $token->[2];
1797: } elsif ($target eq 'tex') {
1798: $currentstring = " \\end{itemize}";
1799: }
1800: return $currentstring;
1801: }
1802:
1803: #-- <dir> tag (end tag required)
1804: sub start_dir {
1805: my ($target,$token) = @_;
1806: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1807: if ($target eq 'web' || $target eq 'webgrade') {
1808: $currentstring .= $token->[4];
1809: } elsif ($target eq 'tex') {
1810: $currentstring .= " \\begin{itemize} ";
1811: }
1812: return $currentstring;
1813: }
1814:
1815: sub end_dir {
1816: my ($target,$token) = @_;
1817: my $currentstring = '';
1818: if ($target eq 'web' || $target eq 'webgrade') {
1819: $currentstring = $token->[2];
1820: } elsif ($target eq 'tex') {
1821: $currentstring = " \\end{itemize}";
1822: }
1823: return $currentstring;
1824: }
1825:
1826: #-- <ol> tag (end tag required)
1827: sub start_ol {
1828: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1829: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1830: if ($target eq 'web' || $target eq 'webgrade') {
1831: $currentstring .= $token->[4];
1832: } elsif ($target eq 'tex') {
1833: $Apache::londefdef::list_index=0;
1834: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1835: if ($type eq '1') {
1836: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1837: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1838: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1839: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1840: } elsif ($type eq 'A') {
1841: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1842: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1843: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1844: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1845: } elsif ($type eq 'a') {
1846: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1847: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1848: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1849: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1850: } elsif ($type eq 'i') {
1851: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1852: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1853: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1854: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1855: } elsif ($type eq 'I') {
1856: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1857: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1858: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1859: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1860: }
1861: $currentstring .= '\strut \begin{enumerate}';
1862: }
1863: return $currentstring;
1864: }
1865:
1866: sub end_ol {
1867: my ($target,$token) = @_;
1868: my $currentstring = '';
1869: if ($target eq 'web' || $target eq 'webgrade') {
1870: $currentstring = $token->[2];
1871: } elsif ($target eq 'tex') {
1872: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1873: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1874: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1875: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1876: }
1877: return $currentstring;
1878: }
1879:
1880: #-- <dl> tag (end tag required)
1881: sub start_dl {
1882: my ($target,$token) = @_;
1883: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1884: if ($target eq 'web' || $target eq 'webgrade') {
1885: $currentstring .= $token->[4];
1886: } elsif ($target eq 'tex') {
1887: $currentstring .= '\begin{description}';
1888: $Apache::londefdef::DL++;
1889: push(@Apache::londefdef::description,[]);
1890: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1891: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1892: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1893: }
1894: return $currentstring;
1895: }
1896:
1897: sub end_dl {
1898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1899: my $currentstring = '';
1900: if ($target eq 'web' || $target eq 'webgrade') {
1901: $currentstring = $token->[2];
1902: } elsif ($target eq 'tex') {
1903: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1904: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1905: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1906: $currentstring.=' '.$element.' ';
1907: }
1908: pop(@Apache::londefdef::description);
1909: $currentstring.='\end{description}';
1910: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1911: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1912: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1913: $Apache::londefdef::DL--;
1914: }
1915: return $currentstring;
1916: }
1917:
1918: #-- <dt> tag (end tag optional)
1919: sub start_dt {
1920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1921: my $currentstring='';
1922: if ($target eq 'web' || $target eq 'webgrade') {
1923: $currentstring = $token->[4];
1924: } elsif ($target eq 'tex') {
1925: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1926: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1927: &Apache::lonxml::startredirection();
1928: $Apache::londefdef::DT[-1]++;
1929: $Apache::londefdef::seenDT[-1]=1;
1930: }
1931: return $currentstring;
1932: }
1933:
1934: sub end_dt {
1935: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1936: my $currentstring = '';
1937: if ($target eq 'web' || $target eq 'webgrade') {
1938: $currentstring = $token->[2];
1939: } elsif ($target eq 'tex') {
1940: if ($Apache::londefdef::DT[-1]) {
1941: my $data=&item_cleanup();
1942: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1943: $Apache::londefdef::DT[-1]--;
1944: }
1945: }
1946: return $currentstring;
1947: }
1948:
1949: sub item_cleanup {
1950: my $item=&Apache::lonxml::endredirection();
1951: $item=~s/\\begin{center}//g;
1952: $item=~s/\\end{center}//g;
1953: return $item;
1954: }
1955:
1956: #-- <dd> tag (end tag optional)
1957: sub start_dd {
1958: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1959: my $currentstring = '';
1960: if ($target eq 'web' || $target eq 'webgrade') {
1961: $currentstring = $token->[4];
1962: } elsif ($target eq 'tex') {
1963: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1964: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1965: if (!$Apache::londefdef::seenDT[-1]) {
1966: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1967: }
1968: push(@{$Apache::londefdef::description[-1]},'');
1969: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1970: $Apache::londefdef::DD[-1]++;
1971: &Apache::lonxml::startredirection();
1972: }
1973: return $currentstring;
1974: }
1975:
1976: sub end_dd {
1977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1978: my $currentstring = '';
1979: if ($target eq 'web' || $target eq 'webgrade') {
1980: $currentstring = $token->[2];
1981: } elsif ($target eq 'tex') {
1982: $Apache::londefdef::description[-1]->[-1].=
1983: &Apache::lonxml::endredirection().' \vskip 0mm ';
1984: $Apache::londefdef::DD[-1]--;
1985: }
1986: return $currentstring;
1987: }
1988:
1989: #-- <table> tag (end tag required)
1990: # <table> also ends any prior <p> that is not closed.
1991: # but, unless I allow <p>'s to nest, that's the
1992: # only way I could think of to allow <p> in
1993: # <tr> <th> bodies
1994: #
1995: #list of supported attributes: border,width,TeXwidth
1996: sub start_table {
1997: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1998: my $textwidth = '';
1999: my $currentstring = &end_p();
2000: if ($target eq 'web' || $target eq 'webgrade') {
2001: $currentstring .= $token->[4];
2002: } elsif ($target eq 'tex') {
2003: push(@Apache::londefdef::table, {});
2004: $Apache::londefdef::table[-1]{'row_number'} = -1;
2005: #maximum table's width (default coincides with text line length)
2006: if ($#Apache::londefdef::table==0) {
2007: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2008: $textwidth=~/(\d+\.?\d*)/;
2009: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2010: } else {
2011: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2012: #the maximum width of nested table is determined by LATeX width of parent cell
2013: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2014: } else {
2015: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2016: $textwidth=$Apache::londefdef::table[-2]{'width'};
2017: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2018: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2019: }
2020: }
2021: }
2022:
2023: # width either comes forced from the TeXwidth or the width parameters.
2024: # in either case it can be a percentage or absolute width.
2025: # in the width case we ignore absolute width
2026: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2027: if (!defined($TeXwidth)) {
2028: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2029: $safeeval,undef,1);
2030: if ($htmlwidth =~ /%/) {
2031: $TeXwidth = $htmlwidth;
2032: } else {
2033: $TeXwidth = $textwidth;
2034: }
2035: }
2036: # if the width is specified as a % it is converted to an absolute width.
2037: # otherwise.. just plugged right in the hash
2038:
2039: if ($TeXwidth=~/%/) {
2040: $TeXwidth=~/(\d+)/;
2041: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2042: } else {
2043: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2044: }
2045: # In the end, however the table width cannot be wider than $textwidth...
2046:
2047: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2048: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2049: }
2050: #table's border
2051: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2052: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2053: unless (defined $border) { $border = 0; }
2054: if ($border) {
2055: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2056: $Apache::londefdef::table[-1]{'vinc'} = '&';
2057: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2058: } else {
2059: $Apache::londefdef::table[-1]{'hinc'} = '';
2060: $Apache::londefdef::table[-1]{'vinc'} = '&';
2061: $Apache::londefdef::table[-1]{'vvinc'} = '';
2062: }
2063: if ($#Apache::londefdef::table==0) {
2064: # Note that \newline seems to destroy the alignment envs.
2065: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2066: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2067: }
2068: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2069: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2070: $Apache::londefdef::table[-1]{'objectlen'}=[];
2071: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2072: $Apache::londefdef::table[-1]{'maxlen'}=[];
2073: $Apache::londefdef::table[-1]{'minlen'}=[];
2074: $Apache::londefdef::table[-1]{'content'}=[];
2075: $Apache::londefdef::table[-1]{'align'}=[];
2076: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2077:
2078:
2079: }
2080: return $currentstring;
2081: }
2082:
2083: sub end_table {
2084: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2085: my $currentstring = '';
2086: if ($target eq 'web' || $target eq 'webgrade') {
2087: $currentstring = $token->[2];
2088: } elsif ($target eq 'tex') {
2089: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2090: my $inmemory = '';
2091: my $output = '';
2092: my $WARNING='';
2093: #width of columns from TeXwidth attributes
2094:
2095: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2096: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2097: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2098: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2099: }
2100: }
2101: }
2102: #free space and number of empty columns
2103: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2104: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2105: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2106: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2107: $empty_columns++;
2108: } else {
2109: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2110: }
2111: }
2112:
2113: #boundaries for contents columns
2114: my @min_len=();#columns can not be narrower
2115: my @max_len=();#maximum length of column
2116: my $avg_max;
2117: my $avg_min;
2118: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2119: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2120: my ($localmin,$localmax)=(0,0);
2121: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2122: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2123: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2124: }
2125: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2126: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2127: }
2128: }
2129: push @min_len, $localmin;
2130: push @max_len, $localmax;
2131: $avg_max = $localmax + $avg_max;
2132: $avg_min = $localmin + $avg_min;
2133: }
2134: # Does not really matter what the average max/min are if there are no cols.
2135: # and this prevents div 0 in that case.
2136:
2137: if ($counter_cols != 0) {
2138: $avg_max = $avg_max/$counter_cols;
2139: $avg_min = $avg_min/$counter_cols;
2140: }
2141:
2142:
2143: # I don't think the below is needed.. but just in case:
2144:
2145: if ($avg_min > $avg_max) {
2146: my $temp = $avg_min;
2147: $avg_min = $avg_max;
2148: $avg_max = $temp;
2149: }
2150:
2151:
2152: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2153: my $localmin=0,;
2154: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2155: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2156: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2157: }
2158: }
2159: if ($max_len[$jn]<$localmin) {
2160: $max_len[$jn]=$localmin;
2161: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2162: }#object size is bigger
2163: if ($min_len[$jn]<$localmin) {
2164: $min_len[$jn]=$localmin;
2165: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2166: }#object size is bigger
2167: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2168: $min_len[$jn]=0;
2169: $max_len[$jn]=0;
2170: }
2171: # Spans seem to be really bothered by max/min = 0. So if we have one
2172: # make it an average joe max/min.
2173:
2174: if ($max_len[$jn] == 0) {
2175: $max_len[$jn] = $avg_max;
2176: }
2177: if ($min_len[$jn] == 0) {
2178: $min_len[$jn] = $avg_min;
2179: }
2180:
2181: }
2182: #final adjustment of column width
2183: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2184: my @adjust=();
2185: #step 1. adjustment by maximum value
2186: my $space_needed=0;
2187: for (my $jn=0;$jn<=$#max_len;$jn++) {
2188: $space_needed=$space_needed+$max_len[$jn];
2189: }
2190: if ($space_needed<=$available_space) {
2191:
2192: for (my $jn=0;$jn<=$#max_len;$jn++) {
2193: if ($fwidth[$jn]==0) {
2194: $fwidth[$jn]=$max_len[$jn];
2195: }
2196: }
2197: } else {
2198: #step 2. adjustment by minimum value (estimation)
2199: $space_needed=0;
2200: for (my $jn=0;$jn<=$#min_len;$jn++) {
2201: $space_needed+=$min_len[$jn];
2202: }
2203: if ($space_needed>$available_space) {
2204: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2205: for (my $jn=0;$jn<=$#max_len;$jn++) {
2206: if ($fwidth[$jn]==0) {
2207: $fwidth[$jn]=$min_len[$jn];
2208: }
2209: }
2210: #check if we have objects which can be scaled
2211: my $how_many_to_scale=0;
2212: my @to_scale=();
2213: for (my $jn=0;$jn<=$#max_len;$jn++) {
2214: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2215: $how_many_to_scale++;
2216: push @to_scale, $jn;
2217: }
2218: }
2219: if ($how_many_to_scale>0) {
2220: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2221: foreach my $jn (@to_scale) {
2222: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2223: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2224: if ($1 ne '') {
2225: my $current_length=&recalc($1);
2226: $current_length=~/(\d+\.?\d*)/;
2227: $current_length=$current_length-$space_to_adjust;
2228: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2229: }
2230: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2231: if ($1 ne '') {
2232: my $current_length=$1;
2233: $current_length=$current_length-$space_to_adjust;
2234: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2235: }
2236: }
2237: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2238: }
2239: }
2240: } else {
2241: #step 3. adjustment over minimal + corrections
2242: my $enlarge_coef=$available_space/$space_needed;
2243: my $acsessive=0;
2244: for (my $jn=0;$jn<=$#min_len;$jn++) {
2245: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2246: if ($adjust[$jn]>$max_len[$jn]) {
2247: $fwidth[$jn]=$max_len[$jn];
2248: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2249: $adjust[$jn]=0;
2250:
2251: }
2252: }
2253: if ($acsessive>0) {
2254: #we have an excess of space and can redistribute it
2255: my $notempty_columns=0;
2256: for (my $jn=0;$jn<=$#min_len;$jn++) {
2257: if ($adjust[$jn]!=0) {
2258: $notempty_columns++;
2259: }
2260: }
2261: my $per_column=$acsessive/$notempty_columns;
2262: for (my $jn=0;$jn<=$#min_len;$jn++) {
2263: if ($adjust[$jn]!=0) {
2264: $adjust[$jn]+=$per_column;
2265: $fwidth[$jn]=$adjust[$jn];
2266: }
2267: }
2268: } else {
2269: for (my $jn=0;$jn<=$#min_len;$jn++) {
2270: $fwidth[$jn]=$adjust[$jn];
2271: }
2272: }
2273: }
2274: }
2275: # use all available width or specified width as if not specified,
2276: # the specified width gets defaulted to the available width.
2277:
2278: my $current=0;
2279: for (my $i=0;$i<=$#fwidth;$i++) {
2280: $current+=$fwidth[$i];
2281: }
2282: if ($current == 0) {
2283: $current = $Apache::londefdef::table[-1]{'width'};
2284: }
2285: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2286: for (my $i=0;$i<=$#fwidth;$i++) {
2287: $fwidth[$i]*=$coef;
2288: }
2289: #removing of empty columns if allowed
2290: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2291: if ($permission eq 'yes') {
2292: my @cleaned_table=();
2293: my @cleaned_header=();
2294: my $colind=0;
2295: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2296: if ($fwidth[$jn]!=0) {
2297: #we need to copy column
2298: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2299: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2300: $cleaned_header[$colind]=$fwidth[$jn];
2301: }
2302: $colind++;
2303: }
2304: }
2305: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2306: @fwidth=@cleaned_header;
2307: }
2308:
2309:
2310: #construct header of the table
2311: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2312: for (my $in=0;$in<=$#fwidth;$in++) {
2313: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2314: }
2315: $header_of_table .= '}';
2316:
2317: #fill the table
2318: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2319: my $have_rowspan = 0;
2320: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2321:
2322: #-----------------------------------------------------------
2323: # I think this order of doing things will ensure that
2324: # single rowspan, columspan and combined row/colspans will
2325: # work correctly. LaTeX is delicate here.
2326: # RF.
2327:
2328: # Start a rowspan if necessary:
2329:
2330: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2331: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2332: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2333: #
2334: # Do the appropriate magic if this has a colspan
2335: #
2336:
2337: my $border_char = "";
2338: if ($border) {
2339: $border_char = "|";
2340: }
2341: my $spanwidth = 0;
2342: if ($colspan > 1) {
2343: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2344: $spanwidth += $fwidth[$spancol];
2345: }
2346: $output .= '\multicolumn{'.
2347: $colspan
2348: ."}";
2349: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2350: $output .= '{'.$border_char.'c'.$border_char.'}{';
2351: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2352: $output .= '{'.$border_char.'r'.$border_char.'}{';
2353: }
2354: else {
2355: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2356: }
2357:
2358: } else {
2359: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2360: }
2361:
2362: # Rowspan... if colspan is 1, and there's an alignment we'll need
2363: # to kick in a multicolumn in order to get the alignment spec.
2364: # this must precede the multirow or LaTex gets quite upset.
2365: # Naturally if colspan > 1 we've already done that above ^
2366: #
2367: my $multirow_aligned = 0;
2368: if ($rowspan > 1) {
2369: if ($colspan == 1) {
2370: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2371: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2372: $multirow_aligned = 1;
2373: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2374: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2375: $multirow_aligned = 1;
2376: }
2377: }
2378: $have_rowspan++;
2379: if ($multirow_aligned) {
2380: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2381: } else {
2382: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2383: }
2384:
2385: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2386: s{^\s*\\par\s*}{};
2387: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2388: s{\s*\\vskip\s*0pt\s*$}{};
2389:
2390: #
2391: # If we did not throw in a multicolumn to align, then add
2392: # an extra {
2393: # so we close correctly without having to keep additional state
2394: # around
2395: #
2396: if (!$multirow_aligned) {
2397: $output .= '{';
2398: }
2399: }
2400: if (($rowspan eq '^') || ($rowspan eq '_')) {
2401: $have_rowspan++;
2402: }
2403: #--------------------------------------------------------------
2404:
2405:
2406: # For right and center alignment of single cells.
2407: # we are going to use a multicolumn with a span of 1 to specify alignment.
2408: #
2409: if ($colspan == 1 && $rowspan == 1) {
2410: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2411: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2412: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2413: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2414: }
2415: }
2416:
2417: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2418:
2419: if (($colspan == 1 && $rowspan == 1) &&
2420: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2421: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2422: $output .= '}';
2423: }
2424:
2425: # Close off any open multirow:
2426:
2427: if ($rowspan > 1) {
2428: $output .= '}}';
2429: }
2430: # Close off the colspan...
2431: #
2432: if ($colspan > 1) {
2433: $output .= '}';
2434: $jn += $colspan-1; # Adjust for number of rows really left.
2435: }
2436: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2437: }
2438: # If have_rowspan > 0, and borders are on, then
2439: # we need to do more than put an \hline at the bottom of row.
2440: # we need to do the appropriate \cline to ensure that
2441: # the spanned rows don't have \hlines through them.
2442:
2443: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2444: $output .= ' \\\\ ';
2445: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2446: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2447: if ($rowspan ne "^") {
2448: if (($rowspan <= 1) || ($rowspan eq '_')) {
2449: my $column = $jn+1;
2450: $output .= '\cline{'.$column.'-'.$column.'} ';
2451: }
2452: }
2453: }
2454:
2455: } else {
2456: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2457: }
2458: }
2459: # Note that \newline destroys alignment env's produced by e.g. <div>
2460: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2461: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2462: if ($#Apache::londefdef::table > 0) {
2463: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2464: # Figure out max/and min width by summing us and then
2465: # apply that to the current column of the table we nest in
2466: # if it's larger than the current width or the current width
2467: # is undefined.
2468: #
2469: my $min_nested_width = 0;
2470: my $max_nested_width = 0;
2471: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2472: $min_nested_width += $min_len[$col];
2473: $max_nested_width += $max_len[$col];
2474:
2475: }
2476: # Fudge in an extra 5 mm for borders etc:
2477:
2478: $min_nested_width += 5;
2479: $max_nested_width += 5;
2480:
2481: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2482: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2483: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2484: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2485: }
2486: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2487: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2488: }
2489:
2490: pop @Apache::londefdef::table;
2491: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2492: } else {
2493: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2494: pop @Apache::londefdef::table;
2495: undef @Apache::londefdef::table;
2496: }
2497: }
2498: return $currentstring;
2499: }
2500:
2501: #-- <tr> tag (end tag optional)
2502: sub start_tr {
2503: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2504: my $currentstring = '';
2505: if ($target eq 'web' || $target eq 'webgrade') {
2506: $currentstring = $token->[4];
2507: } elsif ($target eq 'tex') {
2508: $Apache::londefdef::table[-1]{'row_number'}++;
2509: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2510: if ($alignchar ne '') {
2511: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2512: } else {
2513: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2514: }
2515: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2516: #
2517: # Need to save the number of table columns to preserve the max # columns.
2518: #
2519: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2520: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2521: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2522: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2523: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2524: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2525: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2526: }
2527: return $currentstring;
2528: }
2529:
2530: sub end_tr {
2531: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2532: my $currentstring = &end_p(); # Close any pending <p> in the row.
2533: if ($target eq 'web' || $target eq 'webgrade') {
2534: $currentstring .= $token->[2];
2535: } elsif ($target eq 'tex') {
2536: if ($Apache::londefdef::TD_redirection) {
2537: &end_td_tex($parstack,$parser,$safeeval);
2538: }
2539: # Counter columns must be the maximum number of columns seen
2540: # in the table so far so:
2541: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2542: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2543: }
2544:
2545:
2546:
2547: }
2548: return $currentstring;
2549: }
2550:
2551: #-- <td> tag (end tag optional)
2552: sub start_td {
2553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2554: my $currentstring = '';
2555: if ($target eq 'web' || $target eq 'webgrade') {
2556: $currentstring = $token->[4];
2557: } elsif ($target eq 'tex') {
2558: $Apache::londefdef::TD_redirection = 1;
2559: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2560: }
2561: return $currentstring;
2562: }
2563:
2564: sub tag_check {
2565: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2566: my @ar=@$parstack;
2567: for (my $i=$#ar-1;$i>=0;$i--) {
2568: if (lc($$tagstack[$i]) eq $good_tag) {
2569: &start_td_tex($parstack,$parser,$safeeval);
2570: last;
2571: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2572: splice @ar, $i+1;
2573: &end_td_tex(\@ar,$parser,$safeeval);
2574: &start_td_tex($parstack,$parser,$safeeval);
2575: last;
2576: }
2577: }
2578: return '';
2579: }
2580:
2581: sub start_td_tex {
2582: my ($parstack,$parser,$safeeval) = @_;
2583: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2584: if ($alignchar eq '') {
2585: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2586: }
2587: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2588: $Apache::londefdef::table[-1]{'counter_columns'}++;
2589: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2590: if (defined $TeXwidth) {
2591: my $current_length=&recalc($TeXwidth);
2592: $current_length=~/(\d+\.?\d*)/;
2593: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2594: }
2595: &Apache::lonxml::startredirection();
2596: return '';
2597: }
2598:
2599: sub end_td_tex {
2600: my ($parstack,$parser,$safeeval) = @_;
2601: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2602: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2603: my $data = &Apache::lonxml::endredirection();
2604:
2605: # The rowspan array of the table indicates which cells are part of a span.
2606: # n indicates the start of a span set of n rows.
2607: # ^ indicates a cell that continues a span set.
2608: # _ indicates the cell is at the bottom of a span set.
2609: # If this and subsequent cells are part of a rowspan, we must
2610: # push along the row until we find one that is not.
2611:
2612: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2613: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2614: # Part of a span.
2615: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2616: $current_column++;
2617: }
2618: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2619:
2620:
2621: # Get the column and row spans.
2622: # Colspan can be done via \multicolumn if I can figure out the data structs.
2623:
2624: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2625: if (!$colspan) {
2626: $colspan = 1;
2627: }
2628:
2629: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2630: if (!$rowspan) {
2631: $rowspan = 1;
2632: }
2633:
2634:
2635:
2636: for (my $c = 0; $c < $colspan; $c++) {
2637: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2638: for (my $i = 1; $i < $rowspan; $i++) {
2639: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2640: if ($i == ($rowspan-1)) {
2641: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2642: }
2643: }
2644: }
2645:
2646: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2647: if (defined $TeXwidth) {
2648: for (my $c = 0; $c < $colspan; $c++) {
2649: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2650: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2651: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2652: }
2653: } else {
2654: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2655: my $garbage_data=$data;
2656: my $fwidth=0;
2657: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2658: my $current_length=&recalc($1);
2659: $current_length=~/(\d+\.?\d*)/;
2660: if ($fwidth<$1) {$fwidth=$1;}
2661: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2662: }
2663: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2664: my $current_length=$1;
2665: if ($fwidth<$current_length) {$fwidth=$current_length;}
2666: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2667: }
2668: for (my $c = 0; $c < $colspan; $c++) {
2669: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2670: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2671: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2672: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2673: }
2674: } 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)*/) {
2675: my $garbage_data=$data;
2676: my $fwidth=0;
2677: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2678: my $current_length=&recalc($1);
2679: $current_length=~/(\d+\.?\d*)/;
2680: if ($fwidth<$1) {$fwidth=$1;}
2681: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2682: }
2683: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2684: my $current_length=&recalc($1);
2685: $current_length=~/(\d+\.?\d*)/;
2686: if ($fwidth<$1) {$fwidth=$1;}
2687: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2688: }
2689: for (my $c = 0; $c < $colspan; $c++) {
2690: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2691: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2692: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2693: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2694: }
2695: $data=~s/\\\\\s*$//;
2696: } else {
2697: $data=~s/^\s+(\S.*)/$1/;
2698: $data=~s/(.*\S)\s+$/$1/;
2699: $data=~s/(\s)+/$1/;
2700: my ($current_length,$min_length)=(0,0);
2701: if ($data=~/\\vskip/) {
2702: my $newdata=$data;
2703: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2704: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2705: foreach my $elementdata (@newdata) {
2706: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2707: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2708: my @words=split(/ /,$elementdata);
2709: foreach my $word (@words) {
2710: my $lengthword=2.5*&LATEX_length($word);
2711: if ($min_length<$lengthword) {$min_length=$lengthword;}
2712: }
2713: }
2714: } else {
2715: $current_length=2.5*&LATEX_length($data);
2716: my @words=split(/ /,$data);
2717: foreach my $word (@words) {
2718: my $lengthword=2*&LATEX_length($word);
2719: if ($min_length<$lengthword) {$min_length=$lengthword;}
2720: }
2721: }
2722: for (my $c = 0; $c < $colspan; $c++) {
2723: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2724: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2725: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2726: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2727: }
2728: }
2729: }
2730: # Substitute all of the tables nested in this cell in their appropriate places.
2731:
2732:
2733: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2734: for (my $in=0; $in<=$nested_count; $in++) {
2735: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2736: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2737: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2738: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2739:
2740: }
2741: # Should be be killing off the 'include' elements as they're used up?
2742:
2743: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2744:
2745:
2746:
2747:
2748: # the colspan array will indicate how many columns will be spanned by this
2749: # cell..this requires that counter_columns also be adjusted accordingly
2750: # so that the next bunch of text goes in the right cell. Note that since
2751: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2752: #
2753:
2754: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2755: for (my $i = 0; $i < ($colspan -1); $i++) {
2756: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2757: }
2758: for (my $r = 0; $r < $rowspan; $r++) {
2759: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2760: # Put empty text in spanned cols.
2761:
2762: }
2763:
2764:
2765:
2766: return '';
2767: }
2768:
2769: sub end_td {
2770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2771: my $currentstring = '';
2772: if ($target eq 'web' || $target eq 'webgrade') {
2773: $currentstring = $token->[2];
2774: } elsif ($target eq 'tex') {
2775: $Apache::londefdef::TD_redirection =0;
2776: &end_td_tex($parstack,$parser,$safeeval);
2777: }
2778: return $currentstring;
2779: }
2780:
2781: #-- <th> tag (end tag optional)
2782: sub start_th {
2783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2784: my $currentstring = '';
2785: if ($target eq 'web' || $target eq 'webgrade') {
2786: $currentstring = $token->[4];
2787: } elsif ($target eq 'tex') {
2788: $Apache::londefdef::TD_redirection = 1;
2789: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2790: }
2791: return $currentstring;
2792: }
2793:
2794: sub tagg_check {
2795: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2796: my @ar=@$parstack;
2797: for (my $i=$#ar-1;$i>=0;$i--) {
2798: if (lc($$tagstack[$i]) eq $good_tag) {
2799: &start_th_tex($parstack,$parser,$safeeval);
2800: last;
2801: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2802: splice @ar, $i+1;
2803: &end_th_tex(\@ar,$parser,$safeeval);
2804: &start_th_tex($parstack,$parser,$safeeval);
2805: last;
2806: }
2807: }
2808: return '';
2809: }
2810:
2811: sub start_th_tex {
2812: my ($parstack,$parser,$safeeval) = @_;
2813: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2814: if ($alignchar eq '') {
2815: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2816: }
2817: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2818: $Apache::londefdef::table[-1]{'counter_columns'}++;
2819: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2820: if (defined $TeXwidth) {
2821: my $current_length=&recalc($TeXwidth);
2822: $current_length=~/(\d+\.?\d*)/;
2823: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2824: }
2825: &Apache::lonxml::startredirection();
2826: return '';
2827: }
2828:
2829: sub end_th_tex {
2830: my ($parstack,$parser,$safeeval) = @_;
2831: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2832: my $data=&Apache::lonxml::endredirection();
2833: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2834: if (defined $TeXwidth) {
2835: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2836: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2837: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2838: } else {
2839: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2840: my $garbage_data=$data;
2841: my $fwidth=0;
2842: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2843: my $current_length=&recalc($1);
2844: $current_length=~/(\d+\.?\d*)/;
2845: if ($fwidth<$1) {$fwidth=$1;}
2846: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2847: }
2848: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2849: my $current_length=$1;
2850: if ($fwidth<$current_length) {$fwidth=$current_length;}
2851: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2852: }
2853: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2854: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2855: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2856: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2857: } else {
2858: $data=~s/^\s+(\S.*)/$1/;
2859: $data=~s/(.*\S)\s+$/$1/;
2860: $data=~s/(\s)+/$1/;
2861: my ($current_length,$min_length)=(0,0);
2862: if ($data=~/\\vskip/) {
2863: my $newdata=$data;
2864: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2865: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2866: foreach my $elementdata (@newdata) {
2867: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2868: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2869: my @words=split(/ /,$elementdata);
2870: foreach my $word (@words) {
2871: my $lengthword=2.5*&LATEX_length($word);
2872: if ($min_length<$lengthword) {$min_length=$lengthword;}
2873: }
2874: }
2875: } else {
2876: $current_length=2.5*&LATEX_length($data);
2877: my @words=split(/ /,$data);
2878: foreach my $word (@words) {
2879: my $lengthword=2*&LATEX_length($word);
2880: if ($min_length<$lengthword) {$min_length=$lengthword;}
2881: }
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'}] },'0';
2885: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2886: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2887: }
2888: }
2889: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2890: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2891: }
2892: #make data bold
2893: $data='\textbf{'.$data.'}';
2894: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2895: return'';
2896: }
2897:
2898: sub end_th {
2899: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2900: my $currentstring = &end_p(); # Close any open <p> in the row.
2901: if ($target eq 'web' || $target eq 'webgrade') {
2902: $currentstring .= $token->[2];
2903: } elsif ($target eq 'tex') {
2904: $Apache::londefdef::TD_redirection =0;
2905: &end_th_tex($parstack,$parser,$safeeval);
2906: }
2907: return $currentstring;
2908: }
2909:
2910: #-- <img> tag (end tag forbidden)
2911: #
2912: # Render the <IMG> tag.
2913: # <IMG> has the following attributes (in addition to the
2914: # standard HTML ones:
2915: # TeXwrap - Governs how the tex target will try to wrap text around
2916: # horizontally aligned images.
2917: # TeXwidth - The width of the image when rendered for print (mm).
2918: # TeXheight - The height of the image when rendered for print (mm)
2919: # (Note there seems to also be support for this as a % of page size)
2920: #
2921: sub start_img {
2922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2923: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2924: undef,1);
2925: if (! $src &&
2926: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2927: ) {
2928: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2929: return '';
2930: }
2931: &Apache::lonxml::extlink($src);
2932: my $currentstring = '';
2933: my $scaling = .3;
2934:
2935: # Render unto browsers that which are the browser's...
2936:
2937: if ($target eq 'web' || $target eq 'webgrade') {
2938: if ($env{'browser.imagesuppress'} ne 'on') {
2939: my $enc = ('yes' eq
2940: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2941: $safeeval)));
2942: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2943: $enc);
2944: } else {
2945: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2946: undef,1);
2947: if (!$alttag) {
2948: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2949: $src);
2950: }
2951: $currentstring.='[IMAGE: '.$alttag.']';
2952: }
2953:
2954: # and render unto TeX that which is LaTeX
2955:
2956: } elsif ($target eq 'tex') {
2957: #
2958: # The alignment will require some superstructure to be put around
2959: # the \includegraphics stuff. At present we can only partially
2960: # simulate the alignments offered by html.
2961: #
2962: #
2963: my $align = lc(&Apache::lonxml::get_param('align',
2964: $parstack,
2965: $safeeval,
2966: undef,1));
2967: if(!$align) {
2968: $align = "bottom"; # This is html's default so it's ours too.
2969: }
2970: #
2971: &Apache::lonxml::debug("Alignemnt = $align");
2972: # LaTeX's image/text wrapping is really bad since it wants to
2973: # make figures float.
2974: # The user has the optional parameter (applicable only to l/r
2975: # alignment to use the picins/parpic directive to get wrapped text
2976: # this is also imperfect.. that's why we give them a choice...
2977: # so they can't yell at us for our choice.
2978: #
2979: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2980: $parstack,
2981: $safeeval,
2982: undef,0);
2983: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2984: if(!$latex_rendering) {
2985: $latex_rendering = "texwrap";
2986: }
2987: # using texwrap inside a table does not work. So, if after all of this,
2988: # texwrap is on, we turn it off if we detect we're in a table:
2989: #
2990: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2991: $latex_rendering = 'parpic';
2992: }
2993:
2994: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2995:
2996: #if original gif/jpg/png file exist do following:
2997: my $origsrc=$src;
2998: my ($path,$file) = &get_eps_image($src);
2999: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3000: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3001: &Apache::lonxml::debug("path = $path file = $file src = $src");
3002: if (-e $src) {
3003: &Apache::lonxml::debug("$src exists");
3004: my ($height_param,$width_param)=
3005: &image_size($origsrc,0.3,$parstack,$safeeval);
3006: my $size;
3007: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3008: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3009: # Default size if not able to extract that (e.g. eps image).
3010:
3011: # &Apache::lonnet::logthis("Size = $size");
3012:
3013: $size='['.$size;
3014: $size=~s/,$/]/;
3015: $currentstring .= '\graphicspath{{'.$path.'}}'
3016: .'\includegraphics'.$size.'{'.$file.'} ';
3017: my $closure;
3018: ($currentstring, $closure) = &align_latex_image($align,
3019: $latex_rendering,
3020: $currentstring,
3021: $width_param,
3022: $height_param);
3023: $currentstring .= $closure;
3024:
3025: } else {
3026: &Apache::lonxml::debug("$src does not exist");
3027: #original image file doesn't exist so check the alt attribute
3028: my $alt =
3029: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3030: unless ($alt) {
3031: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3032: }
3033:
3034: if ($alt) { $currentstring .= ' '.$alt.' '; }
3035: }
3036:
3037: # And here's where the semi-quote breaks down: allow the user
3038: # to edit the beast as well by rendering the problem for edit:
3039: } elsif ($target eq 'edit') {
3040: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3041: $currentstring .=&Apache::edit::tag_start($target,$token);
3042: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3043: &Apache::edit::browse('src',undef,'alt',$only).' '.
3044: &Apache::edit::search('src',undef,'alt').'<br />';
3045: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3046: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3047: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3048: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3049: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3050: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3051: ['','bottom','middle','top','left','right'],$token,5);
3052: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3053: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3054: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3055: ['no','yes'], $token, 2);
3056: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3057: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3058: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3059: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3060: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3061:
3062:
3063: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3064: if ($width) { $currentstring.=' width="'.$width.'" '; }
3065: if ($height) { $currentstring.=' height="'.$height.'" '; }
3066: $currentstring .= ' />';
3067: } elsif ($target eq 'modified') {
3068: my ($osrc,$owidth,$oheight)=
3069: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3070: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3071: $safeeval,'src','alt','align',
3072: 'TeXwidth','TeXheight', 'TeXwrap',
3073: 'width','height','encrypturl');
3074: my ($nsrc,$nwidth,$nheight)=
3075: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3076: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3077: &image_replication($loc);
3078: my ($iwidth,$iheight);
3079: if (-e $loc) {
3080: my $image = Image::Magick->new;
3081: $image->Read($loc);
3082: ($iwidth, $iheight) = ($image->Get('width'),
3083: $image->Get('height'));
3084: }
3085: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3086: # changed image or no size specified,
3087: # if they didn't explicitly change the
3088: # width or height use the ones from the image
3089: if ($iwidth && $iheight) {
3090: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3091: $token->[2]{'width'} = $iwidth;$ctag=1;
3092: }
3093: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3094: $token->[2]{'height'}=$iheight;$ctag=1;
3095: }
3096: }
3097: }
3098: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3099: # if we don't have a width or height
3100: if ($iwidth && $cwidth && !$cheight) {
3101: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3102: }
3103: if ($iheight && $cheight && !$cwidth) {
3104: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3105: }
3106: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3107: }
3108:
3109: return $currentstring;
3110: }
3111:
3112: sub end_img {
3113: my ($target,$token) = @_;
3114: my $currentstring = '';
3115: if ($target eq 'web' || $target eq 'webgrade') {
3116: $currentstring = $token->[2];
3117: } elsif ($target eq 'tex') {
3118: $currentstring = '';
3119: }
3120: return $currentstring;
3121: }
3122:
3123: #-- <applet> tag (end tag required)
3124: sub start_applet {
3125: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3126:
3127: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3128: &Apache::lonxml::extlink($code);
3129: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3130: undef,1);
3131: &Apache::lonxml::extlink($archive);
3132: my $currentstring = '';
3133: if ($target eq 'web' || $target eq 'webgrade') {
3134: if ($env{'browser.appletsuppress'} ne 'on') {
3135: $currentstring = &Apache::lonenc::encrypt_ref($token,
3136: {'code'=>$code,
3137: 'archive'=>$archive}
3138: );
3139: } else {
3140: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3141: $safeeval,undef,1);
3142: unless ($alttag) {
3143: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3144: $code);
3145: }
3146: $currentstring='[APPLET: '.$alttag.']';
3147: }
3148: } elsif ($target eq 'tex') {
3149: # Turn off some stuff we can't be inside thank you LaTeX
3150:
3151:
3152: my $restart_sub = 0;
3153: my $restart_sup = 0;
3154:
3155: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3156: # using the start_ stop_ functions.. those tags only care about
3157: # $target.
3158:
3159: if (&is_inside_of($tagstack, "sub")) {
3160: $restart_sub = 1;
3161: $currentstring .= &end_sub($target, $token, $tagstack,
3162: $parstack, $parser, $safeeval);
3163: }
3164: if (&is_inside_of($tagstack, "sup")) {
3165: $restart_sup = 1;
3166: $currentstring .= &end_sup($target, $token, $tagstack,
3167: $parstack, $parser, $safeeval);
3168: }
3169:
3170: # Now process the applet; just replace it with its alt attribute.
3171:
3172: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3173: $safeeval,undef,1);
3174: unless ($alttag) {
3175: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3176: undef,1);
3177: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3178: $code);
3179: }
3180: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3181: '.}\end{center}';
3182:
3183: # Turn stuff back on that we can't be inside of.
3184:
3185: if ($restart_sub) {
3186: $currentstring .= &start_sub($target, $token, $tagstack,
3187: $parstack, $parser, $safeeval);
3188: }
3189: if ($restart_sup) {
3190: $currentstring .= &start_sup($target, $token, $tagstack,
3191: $parstack, $parser, $safeeval);
3192: }
3193: }
3194: return $currentstring;
3195: }
3196:
3197: sub end_applet {
3198: my ($target,$token) = @_;
3199: my $currentstring = '';
3200: if ($target eq 'web' || $target eq 'webgrade') {
3201: $currentstring = $token->[2];
3202: } elsif ($target eq 'tex') {
3203: }
3204: return $currentstring;
3205: }
3206:
3207: #-- <embed> tag (end tag optional/required)
3208: sub start_embed {
3209: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3210: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3211: &Apache::lonxml::extlink($src);
3212: my $currentstring = '';
3213: if ($target eq 'web' || $target eq 'webgrade') {
3214: if ($env{'browser.embedsuppress'} ne 'on') {
3215: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3216: } else {
3217: my $alttag=&Apache::lonxml::get_param
3218: ('alt',$parstack,$safeeval,undef,1);
3219: unless ($alttag) {
3220: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3221: }
3222: $currentstring='[EMBED: '.$alttag.']';
3223: }
3224: } elsif ($target eq 'tex') {
3225: }
3226: return $currentstring;
3227: }
3228:
3229: sub end_embed {
3230: my ($target,$token) = @_;
3231: my $currentstring = '';
3232: if ($target eq 'web' || $target eq 'webgrade') {
3233: $currentstring = $token->[2];
3234: } elsif ($target eq 'tex') {
3235: }
3236: return $currentstring;
3237: }
3238:
3239: #-- <param> tag (end tag forbidden)
3240: sub start_param {
3241: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3242: if (&Apache::lonxml::get_param('name',$parstack,
3243: $safeeval,undef,1)=~/^cabbase$/i) {
3244: my $value=&Apache::lonxml::get_param('value',$parstack,
3245: $safeeval,undef,1);
3246: &Apache::lonxml::extlink($value);
3247: }
3248:
3249: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3250: &Apache::lonxml::extlink($src);
3251: my $currentstring = '';
3252: if ($target eq 'web' || $target eq 'webgrade') {
3253: my %toconvert;
3254: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3255: if ($src) { $toconvert{'src'}= $src; }
3256: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3257: undef,1);
3258: if ($name=~/^cabbase$/i) {
3259: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3260: $safeeval,undef,1);
3261: }
3262: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3263: } elsif ($target eq 'tex') {
3264: }
3265: return $currentstring;
3266: }
3267:
3268: sub end_param {
3269: my ($target,$token) = @_;
3270: my $currentstring = '';
3271: if ($target eq 'web' || $target eq 'webgrade') {
3272: $currentstring = $token->[2];
3273: } elsif ($target eq 'tex') {
3274: }
3275: return $currentstring;
3276: }
3277:
3278: #-- <allow> tag
3279: sub start_allow {
3280: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3281: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3282: &Apache::lonxml::extlink($src);
3283:
3284: if ($target eq 'tex') { &image_replication($src); }
3285: my $result;
3286: if ($target eq 'edit') {
3287: $result .=&Apache::edit::tag_start($target,$token);
3288: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3289: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3290: } elsif ($target eq 'modified') {
3291: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3292: $safeeval,'src');
3293: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3294: }
3295: return $result;
3296: }
3297:
3298: sub end_allow {
3299: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3300: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3301: return '';
3302: }
3303:
3304: #-- Frames (end tag required)
3305: #-- <frameset>
3306: sub start_frameset {
3307: my ($target,$token) = @_;
3308: my $currentstring = ''; # Close any pending para.
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring =
3311: &Apache::loncommon::start_page($Apache::londefdef::title,
3312: $Apache::londefdef::head,
3313: {'add_entries' => $token->[2],
3314: 'no_title' => 1,
3315: 'force_register' => 1,
3316: 'frameset' => 1,});
3317:
3318: }
3319: return $currentstring;
3320: }
3321:
3322: sub end_frameset {
3323: my ($target,$token) = @_;
3324: my $currentstring = '';
3325: if ($target eq 'web' || $target eq 'webgrade') {
3326: $currentstring = $token->[2];
3327: }
3328: return $currentstring;
3329: }
3330:
3331: #-- <xmp> (end tag required)
3332: sub start_xmp {
3333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3334: my $currentstring = '';
3335: if ($target eq 'web' || $target eq 'webgrade') {
3336: $currentstring .= $token->[4];
3337: } elsif ($target eq 'tex') {
3338: $currentstring .= '\begin{verbatim}';
3339: }
3340: return $currentstring;
3341: }
3342:
3343: sub end_xmp {
3344: my ($target,$token) = @_;
3345: my $currentstring = '';
3346: if ($target eq 'web' || $target eq 'webgrade') {
3347: $currentstring .= $token->[2];
3348: } elsif ($target eq 'tex') {
3349: $currentstring .= '\end{verbatim}';
3350: }
3351: return $currentstring;
3352: }
3353:
3354: #-- <pre> (end tag required)
3355: sub start_pre {
3356: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3357: my $currentstring = &end_p(); # close off pending <p>
3358: if ($target eq 'web' || $target eq 'webgrade') {
3359: $currentstring .= $token->[4];
3360: } elsif ($target eq 'tex') {
3361: $currentstring .= '\begin{verbatim}';
3362: &Apache::lonxml::disable_LaTeX_substitutions();
3363: }
3364: return $currentstring;
3365: }
3366:
3367: sub end_pre {
3368: my ($target,$token) = @_;
3369: my $currentstring = '';
3370: if ($target eq 'web' || $target eq 'webgrade') {
3371: $currentstring .= $token->[2];
3372: } elsif ($target eq 'tex') {
3373: $currentstring .= '\end{verbatim}';
3374: &Apache::lonxml::enable_LaTeX_substitutions();
3375: }
3376: return $currentstring;
3377: }
3378:
3379: #-- <insert>
3380: sub start_insert {
3381: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3382: my $currentstring = '';
3383: if ($target eq 'web' || $target eq 'webgrade') {
3384: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3385: $currentstring .= '<b>'.$display.'</b>';;
3386: }
3387: return $currentstring;
3388: }
3389:
3390: sub end_insert {
3391: my ($target,$token) = @_;
3392: my $currentstring = '';
3393: if ($target eq 'web' || $target eq 'webgrade') {
3394: $currentstring .= '';
3395: }
3396: return $currentstring;
3397: }
3398:
3399: #-- <externallink>
3400: sub start_externallink {
3401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web' || $target eq 'webgrade') {
3404: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3405: $currentstring .= '<b>'.$display.'</b>';;
3406: }
3407: return $currentstring;
3408: }
3409:
3410: sub end_externallink {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring .= '';
3415: }
3416: return $currentstring;
3417: }
3418:
3419: #-- <blankspace heigth="">
3420: sub start_blankspace {
3421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3422: my $currentstring = &end_p(); # closes off any unclosed <p>
3423: if ($target eq 'tex') {
3424: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3425: $currentstring .= '\vskip '.$howmuch.' ';
3426: }
3427: return $currentstring;
3428: }
3429:
3430: sub end_blankspace {
3431: my ($target,$token) = @_;
3432: my $currentstring = '';
3433: if ($target eq 'tex') {
3434: $currentstring .= '';
3435: }
3436: return $currentstring;
3437: }
3438:
3439: #-- <abbr> tag (end tag required)
3440: sub start_abbr {
3441: my ($target,$token) = @_;
3442: my $currentstring = '';
3443: if ($target eq 'web' || $target eq 'webgrade') {
3444: $currentstring = $token->[4];
3445: }
3446: return $currentstring;
3447: }
3448:
3449: sub end_abbr {
3450: my ($target,$token) = @_;
3451: my $currentstring = '';
3452: if ($target eq 'web' || $target eq 'webgrade') {
3453: $currentstring = $token->[2];
3454: }
3455: return $currentstring;
3456: }
3457:
3458: #-- <acronym> tag (end tag required)
3459: sub start_acronym {
3460: my ($target,$token) = @_;
3461: my $currentstring = '';
3462: if ($target eq 'web' || $target eq 'webgrade') {
3463: $currentstring = $token->[4];
3464: }
3465: return $currentstring;
3466: }
3467:
3468: sub end_acronym {
3469: my ($target,$token) = @_;
3470: my $currentstring = '';
3471: if ($target eq 'web' || $target eq 'webgrade') {
3472: $currentstring = $token->[2];
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <area> tag (end tag forbidden)
3478: sub start_area {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web' || $target eq 'webgrade') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_area {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web' || $target eq 'webgrade') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <base> tag (end tag forbidden)
3497: sub start_base {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web' || $target eq 'webgrade') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_base {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web' || $target eq 'webgrade') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <bdo> tag (end tag required)
3516: sub start_bdo {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web' || $target eq 'webgrade') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_bdo {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web' || $target eq 'webgrade') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <bgsound> tag (end tag optional)
3535: sub start_bgsound {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web' || $target eq 'webgrade') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_bgsound {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web' || $target eq 'webgrade') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <blink> tag (end tag required)
3554: sub start_blink {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web' || $target eq 'webgrade') {
3558: $currentstring = $token->[4];
3559: }
3560: return $currentstring;
3561: }
3562:
3563: sub end_blink {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web' || $target eq 'webgrade') {
3567: $currentstring = $token->[2];
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <blockquote> tag (end tag required)
3573: sub start_blockquote {
3574: my ($target,$token) = @_;
3575: my $currentstring = &end_p(); # Close any unclosed <p>
3576: if ($target eq 'web' || $target eq 'webgrade') {
3577: $currentstring .= $token->[4];
3578: }
3579: if ($target eq 'tex') {
3580: $currentstring .= '\begin{quote}';
3581: }
3582: return $currentstring;
3583: }
3584:
3585: sub end_blockquote {
3586: my ($target,$token) = @_;
3587: my $currentstring = '';
3588: if ($target eq 'web' || $target eq 'webgrade') {
3589: $currentstring = $token->[2];
3590: }
3591: if ($target eq 'tex') {
3592: $currentstring = '\end{quote}';
3593: }
3594: return $currentstring;
3595: }
3596:
3597: #-- <button> tag (end tag required)
3598: sub start_button {
3599: my ($target,$token) = @_;
3600: my $currentstring = '';
3601: if ($target eq 'web' || $target eq 'webgrade') {
3602: $currentstring = $token->[4];
3603: }
3604: return $currentstring;
3605: }
3606:
3607: sub end_button {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'web' || $target eq 'webgrade') {
3611: $currentstring = $token->[2];
3612: }
3613: return $currentstring;
3614: }
3615:
3616: #-- <caption> tag (end tag required)
3617: sub start_caption {
3618: my ($target,$token) = @_;
3619: my $currentstring = '';
3620: if ($target eq 'web' || $target eq 'webgrade') {
3621: $currentstring = $token->[4];
3622: }
3623: return $currentstring;
3624: }
3625:
3626: sub end_caption {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web' || $target eq 'webgrade') {
3630: $currentstring = $token->[2];
3631: }
3632: return $currentstring;
3633: }
3634:
3635: #-- <col> tag (end tag forbdden)
3636: sub start_col {
3637: my ($target,$token) = @_;
3638: my $currentstring = '';
3639: if ($target eq 'web' || $target eq 'webgrade') {
3640: $currentstring = $token->[4];
3641: }
3642: return $currentstring;
3643: }
3644:
3645: sub end_col {
3646: my ($target,$token) = @_;
3647: my $currentstring = '';
3648: if ($target eq 'web' || $target eq 'webgrade') {
3649: $currentstring = $token->[2];
3650: }
3651: return $currentstring;
3652: }
3653:
3654: #-- <colgroup> tag (end tag optional)
3655: sub start_colgroup {
3656: my ($target,$token) = @_;
3657: my $currentstring = '';
3658: if ($target eq 'web' || $target eq 'webgrade') {
3659: $currentstring = $token->[4];
3660: }
3661: return $currentstring;
3662: }
3663:
3664: sub end_colgroup {
3665: my ($target,$token) = @_;
3666: my $currentstring = '';
3667: if ($target eq 'web' || $target eq 'webgrade') {
3668: $currentstring = $token->[2];
3669: }
3670: return $currentstring;
3671: }
3672:
3673: #-- <del> tag (end tag required)
3674: sub start_del {
3675: my ($target,$token) = @_;
3676: my $currentstring = '';
3677: if ($target eq 'web' || $target eq 'webgrade') {
3678: $currentstring = $token->[4];
3679: }
3680: return $currentstring;
3681: }
3682:
3683: sub end_del {
3684: my ($target,$token) = @_;
3685: my $currentstring = '';
3686: if ($target eq 'web' || $target eq 'webgrade') {
3687: $currentstring = $token->[2];
3688: }
3689: return $currentstring;
3690: }
3691:
3692: #-- <fieldset> tag (end tag required)
3693: sub start_fieldset {
3694: my ($target,$token) = @_;
3695: my $currentstring = '';
3696: if ($target eq 'web' || $target eq 'webgrade') {
3697: $currentstring = $token->[4];
3698: }
3699: return $currentstring;
3700: }
3701:
3702: sub end_fieldset {
3703: my ($target,$token) = @_;
3704: my $currentstring = '';
3705: if ($target eq 'web' || $target eq 'webgrade') {
3706: $currentstring = $token->[2];
3707: }
3708: return $currentstring;
3709: }
3710:
3711: #-- <frame> tag (end tag forbidden)
3712: sub start_frame {
3713: my ($target,$token) = @_;
3714: my $currentstring = '';
3715: if ($target eq 'web' || $target eq 'webgrade') {
3716: $currentstring = $token->[4];
3717: }
3718: return $currentstring;
3719: }
3720:
3721: sub end_frame {
3722: my ($target,$token) = @_;
3723: my $currentstring = '';
3724: if ($target eq 'web' || $target eq 'webgrade') {
3725: $currentstring = $token->[2];
3726: }
3727: return $currentstring;
3728: }
3729:
3730: #-- <iframe> tag (end tag required)
3731: sub start_iframe {
3732: my ($target,$token) = @_;
3733: my $currentstring = '';
3734: if ($target eq 'web' || $target eq 'webgrade') {
3735: $currentstring = $token->[4];
3736: }
3737: return $currentstring;
3738: }
3739:
3740: sub end_iframe {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web' || $target eq 'webgrade') {
3744: $currentstring = $token->[2];
3745: }
3746: return $currentstring;
3747: }
3748:
3749: #-- <ins> tag (end tag required)
3750: sub start_ins {
3751: my ($target,$token) = @_;
3752: my $currentstring = '';
3753: if ($target eq 'web' || $target eq 'webgrade') {
3754: $currentstring = $token->[4];
3755: }
3756: return $currentstring;
3757: }
3758:
3759: sub end_ins {
3760: my ($target,$token) = @_;
3761: my $currentstring = '';
3762: if ($target eq 'web' || $target eq 'webgrade') {
3763: $currentstring = $token->[2];
3764: }
3765: return $currentstring;
3766: }
3767:
3768: #-- <isindex> tag (end tag forbidden)
3769: sub start_isindex {
3770: my ($target,$token) = @_;
3771: my $currentstring = '';
3772: if ($target eq 'web' || $target eq 'webgrade') {
3773: $currentstring = $token->[4];
3774: }
3775: return $currentstring;
3776: }
3777:
3778: sub end_isindex {
3779: my ($target,$token) = @_;
3780: my $currentstring = '';
3781: if ($target eq 'web' || $target eq 'webgrade') {
3782: $currentstring = $token->[2];
3783: }
3784: return $currentstring;
3785: }
3786:
3787: #-- <keygen> tag (end tag forbidden)
3788: sub start_keygen {
3789: my ($target,$token) = @_;
3790: my $currentstring = '';
3791: if ($target eq 'web' || $target eq 'webgrade') {
3792: $currentstring = $token->[4];
3793: }
3794: return $currentstring;
3795: }
3796:
3797: sub end_keygen {
3798: my ($target,$token) = @_;
3799: my $currentstring = '';
3800: if ($target eq 'web' || $target eq 'webgrade') {
3801: $currentstring = $token->[2];
3802: }
3803: return $currentstring;
3804: }
3805:
3806: #-- <label> tag
3807: sub start_label {
3808: my ($target,$token) = @_;
3809: my $currentstring = '';
3810: if ($target eq 'web' || $target eq 'webgrade') {
3811: $currentstring = $token->[4];
3812: }
3813: return $currentstring;
3814: }
3815:
3816: sub end_label {
3817: my ($target,$token) = @_;
3818: my $currentstring = '';
3819: if ($target eq 'web' || $target eq 'webgrade') {
3820: $currentstring = $token->[2];
3821: }
3822: return $currentstring;
3823: }
3824:
3825: #-- <layer> tag (end tag required)
3826: sub start_layer {
3827: my ($target,$token) = @_;
3828: my $currentstring = '';
3829: if ($target eq 'web' || $target eq 'webgrade') {
3830: $currentstring = $token->[4];
3831: }
3832: return $currentstring;
3833: }
3834:
3835: sub end_layer {
3836: my ($target,$token) = @_;
3837: my $currentstring = '';
3838: if ($target eq 'web' || $target eq 'webgrade') {
3839: $currentstring = $token->[2];
3840: }
3841: return $currentstring;
3842: }
3843:
3844: #-- <legend> tag (end tag required)
3845: sub start_legend {
3846: my ($target,$token) = @_;
3847: my $currentstring = '';
3848: if ($target eq 'web' || $target eq 'webgrade') {
3849: $currentstring = $token->[4];
3850: }
3851: return $currentstring;
3852: }
3853:
3854: sub end_legend {
3855: my ($target,$token) = @_;
3856: my $currentstring = '';
3857: if ($target eq 'web' || $target eq 'webgrade') {
3858: $currentstring = $token->[2];
3859: }
3860: return $currentstring;
3861: }
3862:
3863: #-- <link> tag (end tag forbidden)
3864: sub start_link {
3865: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3866: my $currentstring = '';
3867: if ($target eq 'web' || $target eq 'webgrade') {
3868: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3869: undef,1);
3870: &Apache::lonxml::extlink($href);
3871: $currentstring = $token->[4];
3872: }
3873: return $currentstring;
3874: }
3875:
3876: sub end_link {
3877: my ($target,$token) = @_;
3878: my $currentstring = '';
3879: if ($target eq 'web' || $target eq 'webgrade') {
3880: $currentstring = $token->[2];
3881: }
3882: return $currentstring;
3883: }
3884:
3885: #-- <marquee> tag (end tag optional)
3886: sub start_marquee {
3887: my ($target,$token) = @_;
3888: my $currentstring = '';
3889: if ($target eq 'web' || $target eq 'webgrade') {
3890: $currentstring = $token->[4];
3891: }
3892: return $currentstring;
3893: }
3894:
3895: sub end_marquee {
3896: my ($target,$token) = @_;
3897: my $currentstring = '';
3898: if ($target eq 'web' || $target eq 'webgrade') {
3899: $currentstring = $token->[2];
3900: }
3901: return $currentstring;
3902: }
3903:
3904: #-- <multicol> tag (end tag required)
3905: sub start_multicol {
3906: my ($target,$token) = @_;
3907: my $currentstring = &end_p(); # Close any pending <p>
3908: if ($target eq 'web' || $target eq 'webgrade') {
3909: $currentstring .= $token->[4];
3910: }
3911: return $currentstring;
3912: }
3913:
3914: sub end_multicol {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[2];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: #-- <nobr> tag (end tag required)
3924: sub start_nobr {
3925: my ($target,$token) = @_;
3926: my $currentstring = '';
3927: if ($target eq 'web' || $target eq 'webgrade') {
3928: $currentstring = $token->[4];
3929: } elsif ($target eq 'tex') {
3930: $currentstring='\mbox{';
3931: }
3932: return $currentstring;
3933: }
3934:
3935: sub end_nobr {
3936: my ($target,$token) = @_;
3937: my $currentstring = '';
3938: if ($target eq 'web' || $target eq 'webgrade') {
3939: $currentstring = $token->[2];
3940: } elsif ($target eq 'tex') {
3941: $currentstring='}';
3942: }
3943: return $currentstring;
3944: }
3945:
3946: #-- <noembed> tag (end tag required)
3947: sub start_noembed {
3948: my ($target,$token) = @_;
3949: my $currentstring = '';
3950: if ($target eq 'web' || $target eq 'webgrade') {
3951: $currentstring = $token->[4];
3952: }
3953: return $currentstring;
3954: }
3955:
3956: sub end_noembed {
3957: my ($target,$token) = @_;
3958: my $currentstring = '';
3959: if ($target eq 'web' || $target eq 'webgrade') {
3960: $currentstring = $token->[2];
3961: }
3962: return $currentstring;
3963: }
3964:
3965: #-- <noframes> tag (end tag required)
3966: sub start_noframes {
3967: my ($target,$token) = @_;
3968: my $currentstring = '';
3969: if ($target eq 'web' || $target eq 'webgrade') {
3970: $currentstring = $token->[4];
3971: }
3972: return $currentstring;
3973: }
3974:
3975: sub end_noframes {
3976: my ($target,$token) = @_;
3977: my $currentstring = '';
3978: if ($target eq 'web' || $target eq 'webgrade') {
3979: $currentstring = $token->[2];
3980: }
3981: return $currentstring;
3982: }
3983:
3984: #-- <nolayer> tag (end tag required)
3985: sub start_nolayer {
3986: my ($target,$token) = @_;
3987: my $currentstring = '';
3988: if ($target eq 'web' || $target eq 'webgrade') {
3989: $currentstring = $token->[4];
3990: }
3991: return $currentstring;
3992: }
3993:
3994: sub end_nolayer {
3995: my ($target,$token) = @_;
3996: my $currentstring = '';
3997: if ($target eq 'web' || $target eq 'webgrade') {
3998: $currentstring = $token->[2];
3999: }
4000: return $currentstring;
4001: }
4002:
4003: #-- <noscript> tag (end tag required)
4004: sub start_noscript {
4005: my ($target,$token) = @_;
4006: my $currentstring = '';
4007: if ($target eq 'web' || $target eq 'webgrade') {
4008: $currentstring = $token->[4];
4009: }
4010: return $currentstring;
4011: }
4012:
4013: sub end_noscript {
4014: my ($target,$token) = @_;
4015: my $currentstring = '';
4016: if ($target eq 'web' || $target eq 'webgrade') {
4017: $currentstring = $token->[2];
4018: }
4019: return $currentstring;
4020: }
4021:
4022: #-- <object> tag (end tag required)
4023: sub start_object {
4024: my ($target,$token) = @_;
4025: my $currentstring = '';
4026: if ($target eq 'web' || $target eq 'webgrade') {
4027: $currentstring = $token->[4];
4028: }
4029: return $currentstring;
4030: }
4031:
4032: sub end_object {
4033: my ($target,$token) = @_;
4034: my $currentstring = '';
4035: if ($target eq 'web' || $target eq 'webgrade') {
4036: $currentstring = $token->[2];
4037: }
4038: return $currentstring;
4039: }
4040:
4041: #-- <optgroup> tag (end tag required)
4042: sub start_optgroup {
4043: my ($target,$token) = @_;
4044: my $currentstring = '';
4045: if ($target eq 'web' || $target eq 'webgrade') {
4046: $currentstring = $token->[4];
4047: }
4048: return $currentstring;
4049: }
4050:
4051: sub end_optgroup {
4052: my ($target,$token) = @_;
4053: my $currentstring = '';
4054: if ($target eq 'web' || $target eq 'webgrade') {
4055: $currentstring = $token->[2];
4056: }
4057: return $currentstring;
4058: }
4059:
4060: #-- <samp> tag (end tag required)
4061: sub start_samp {
4062: my ($target,$token) = @_;
4063: my $currentstring = '';
4064: if ($target eq 'web' || $target eq 'webgrade') {
4065: $currentstring = $token->[4];
4066: } elsif ($target eq 'tex') {
4067: $currentstring='\texttt{';
4068: }
4069: return $currentstring;
4070: }
4071:
4072: sub end_samp {
4073: my ($target,$token) = @_;
4074: my $currentstring = '';
4075: if ($target eq 'web' || $target eq 'webgrade') {
4076: $currentstring = $token->[2];
4077: } elsif ($target eq 'tex') {
4078: $currentstring='}';
4079: }
4080: return $currentstring;
4081: }
4082:
4083: #-- <server> tag
4084: sub start_server {
4085: my ($target,$token) = @_;
4086: my $currentstring = '';
4087: if ($target eq 'web' || $target eq 'webgrade') {
4088: $currentstring = $token->[4];
4089: }
4090: return $currentstring;
4091: }
4092:
4093: sub end_server {
4094: my ($target,$token) = @_;
4095: my $currentstring = '';
4096: if ($target eq 'web' || $target eq 'webgrade') {
4097: $currentstring = $token->[2];
4098: }
4099: return $currentstring;
4100: }
4101:
4102: #-- <spacer> tag (end tag forbidden)
4103: sub start_spacer {
4104: my ($target,$token) = @_;
4105: my $currentstring = &end_p(); # Close off any open <p> tag.
4106: if ($target eq 'web' || $target eq 'webgrade') {
4107: $currentstring .= $token->[4];
4108: }
4109: return $currentstring;
4110: }
4111:
4112: sub end_spacer {
4113: my ($target,$token) = @_;
4114: my $currentstring = '';
4115: if ($target eq 'web' || $target eq 'webgrade') {
4116: $currentstring = $token->[2];
4117: }
4118: return $currentstring;
4119: }
4120:
4121: #-- <span> tag (end tag required)
4122: sub start_span {
4123: my ($target,$token) = @_;
4124: my $currentstring = '';
4125: if ($target eq 'web' || $target eq 'webgrade') {
4126: $currentstring = $token->[4];
4127: }
4128: return $currentstring;
4129: }
4130:
4131: sub end_span {
4132: my ($target,$token) = @_;
4133: my $currentstring = '';
4134: if ($target eq 'web' || $target eq 'webgrade') {
4135: $currentstring = $token->[2];
4136: }
4137: return $currentstring;
4138: }
4139:
4140: #-- <tbody> tag (end tag optional)
4141: sub start_tbody {
4142: my ($target,$token) = @_;
4143: my $currentstring = '';
4144: if ($target eq 'web' || $target eq 'webgrade') {
4145: $currentstring = $token->[4];
4146: }
4147: return $currentstring;
4148: }
4149:
4150: sub end_tbody {
4151: my ($target,$token) = @_;
4152: my $currentstring = '';
4153: if ($target eq 'web' || $target eq 'webgrade') {
4154: $currentstring = $token->[2];
4155: }
4156: return $currentstring;
4157: }
4158:
4159: #-- <tfoot> tag (end tag optional)
4160: sub start_tfoot {
4161: my ($target,$token) = @_;
4162: my $currentstring = '';
4163: if ($target eq 'web' || $target eq 'webgrade') {
4164: $currentstring = $token->[4];
4165: }
4166: return $currentstring;
4167: }
4168:
4169: sub end_tfoot {
4170: my ($target,$token) = @_;
4171: my $currentstring = '';
4172: if ($target eq 'web' || $target eq 'webgrade') {
4173: $currentstring = $token->[2];
4174: }
4175: return $currentstring;
4176: }
4177:
4178: #-- <thead> tag (end tag optional)
4179: sub start_thead {
4180: my ($target,$token) = @_;
4181: my $currentstring = '';
4182: if ($target eq 'web' || $target eq 'webgrade') {
4183: $currentstring = $token->[4];
4184: }
4185: return $currentstring;
4186: }
4187:
4188: sub end_thead {
4189: my ($target,$token) = @_;
4190: my $currentstring = '';
4191: if ($target eq 'web' || $target eq 'webgrade') {
4192: $currentstring = $token->[2];
4193: }
4194: return $currentstring;
4195: }
4196:
4197: #-- <var> tag
4198: sub start_var {
4199: my ($target,$token) = @_;
4200: my $currentstring = '';
4201: if ($target eq 'web' || $target eq 'webgrade') {
4202: $currentstring = $token->[4];
4203: } elsif ($target eq 'tex') {
4204: $currentstring = '\textit{';
4205: }
4206: return $currentstring;
4207: }
4208:
4209: sub end_var {
4210: my ($target,$token) = @_;
4211: my $currentstring = '';
4212: if ($target eq 'web' || $target eq 'webgrade') {
4213: $currentstring = $token->[2];
4214: } elsif ($target eq 'tex') {
4215: $currentstring = '}';
4216: }
4217: return $currentstring;
4218: }
4219:
4220: #-- <wbr> tag (end tag forbidden)
4221: sub start_wbr {
4222: my ($target,$token) = @_;
4223: my $currentstring = '';
4224: if ($target eq 'web' || $target eq 'webgrade') {
4225: $currentstring = $token->[4];
4226: }
4227: return $currentstring;
4228: }
4229:
4230: sub end_wbr {
4231: my ($target,$token) = @_;
4232: my $currentstring = '';
4233: if ($target eq 'web' || $target eq 'webgrade') {
4234: $currentstring = $token->[2];
4235: }
4236: return $currentstring;
4237: }
4238:
4239: #-- <hideweboutput> tag
4240: sub start_hideweboutput {
4241: my ($target,$token) = @_;
4242: if ($target eq 'web' || $target eq 'webgrade') {
4243: &Apache::lonxml::startredirection();
4244: }
4245: return '';
4246: }
4247:
4248: sub end_hideweboutput {
4249: my ($target,$token) = @_;
4250: my $currentstring = '';
4251: if ($target eq 'web' || $target eq 'webgrade') {
4252: $currentstring = &Apache::lonxml::endredirection();
4253: }
4254: return '';
4255: }
4256:
4257:
4258: sub image_replication {
4259: my $src = shift;
4260: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4261: #replicates eps or ps
4262: my $epssrc = my $pssrc = $src;
4263: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4264: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4265: if (not -e $epssrc && not -e $pssrc) {
4266: my $result=&Apache::lonnet::repcopy($epssrc);
4267: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4268: }
4269: return '';
4270: }
4271: #
4272: # Get correct sizing parameter for an image given
4273: # it's initial ht. and wid. This allows sizing of
4274: # images that are generated on-the-fly (e.g. gnuplot)
4275: # as well as serving as a utility for image_size.
4276: #
4277: # Parameter:
4278: # height_param
4279: # width_param - Initial picture dimensions.
4280: # scaling - A scale factor.
4281: # parstack, - the current stack of tag attributes
4282: # from the xml parser
4283: # safeeval, - pointer to the safespace
4284: # depth, - from what level in the stack to look for attributes
4285: # (assumes -1 if unspecified)
4286: # cis - look for attrubutes case insensitively
4287: # (assumes false)
4288: #
4289: # Returns:
4290: # height, width - new dimensions.
4291: #
4292: sub resize_image {
4293: my ($height_param, $width_param, $scaling,
4294: $parstack, $safeeval, $depth, $cis) = @_;
4295:
4296: # First apply the scaling...
4297:
4298: $height_param = $height_param * $scaling;
4299: $width_param = $width_param * $scaling;
4300:
4301: #do we have any specified LaTeX size of the picture?
4302: my $toget='TeXwidth';
4303: if ($cis) {
4304: $toget=lc($toget);
4305: }
4306: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4307: $safeeval,$depth,$cis);
4308: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4309: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4310: $safeeval,$depth,$cis);
4311: #do we have any specified web size of the picture?
4312: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4313: $depth,1);
4314: if ($TeXwidth) {
4315: my $old_width_param=$width_param;
4316: if ($TeXwidth=~/(\d+)\s*\%/) {
4317: $width_param = $1*$env{'form.textwidth'}/100;
4318: } else {
4319: $width_param = $TeXwidth;
4320: }
4321: if ($TeXheight) {
4322: $height_param = $TeXheight;
4323: } elsif ($old_width_param) {
4324: $height_param=$TeXwidth/$old_width_param*$height_param;
4325: }
4326: } elsif ($TeXheight) {
4327: $height_param = $TeXheight;
4328: if ($height_param) {
4329: $width_param = $TeXheight/$height_param*$width_param;
4330: }
4331: } elsif ($width) {
4332: my $old_width_param=$width_param;
4333: $width_param = $width*$scaling;
4334: if ($old_width_param) {
4335: $height_param=$width_param/$old_width_param*$height_param;
4336: }
4337: }
4338: if ($width_param > $env{'form.textwidth'}) {
4339: my $old_width_param=$width_param;
4340: $width_param =0.95*$env{'form.textwidth'};
4341: if ($old_width_param) {
4342: $height_param=$width_param/$old_width_param*$height_param;
4343: }
4344: }
4345:
4346: return ($height_param, $width_param);
4347: }
4348:
4349: sub image_size {
4350: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4351:
4352: #size of image from gif/jpg/jpeg/png
4353: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4354: if (-e $ressrc) {
4355: $src = $ressrc;
4356: }
4357: my $image = Image::Magick->new;
4358: my $current_figure = $image->Read($src);
4359: my $width_param = $image->Get('width');
4360: my $height_param = $image->Get('height');
4361: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4362: undef($image);
4363:
4364: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4365: $scaling, $parstack, $safeeval,
4366: $depth, $cis);
4367:
4368: return ($height_param, $width_param);
4369: }
4370:
4371: sub image_width {
4372: my ($height, $width) = &image_size(@_);
4373: return $width;
4374: }
4375: # Not yet 100% sure this is correct in all circumstances..
4376: # due to my uncertainty about mods to image_size.
4377: #
4378: sub image_height {
4379: my ($height, $width) = &image_size(@_);
4380: return $height;
4381: }
4382:
4383: sub get_eps_image {
4384: my ($src)=@_;
4385: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4386:
4387: # In order to prevent the substitution of the alt text, we need to
4388: # be sure the orig_src file is on system now so:
4389:
4390: if (! -e $orig_src) {
4391: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4392: }
4393: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4394: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4395: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4396: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4397: &Apache::lonxml::debug("Filelocation gives: $src");
4398: if (! -e $src) {
4399: &Apache::lonxml::debug("$src does not exist");
4400: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4401: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4402: #if replication failed try to find ps file
4403: $src=~s/\.eps$/\.ps/;
4404: &Apache::lonxml::debug("Now looking for $src");
4405: #if no ps file try to replicate it.
4406: my $didrepcopy = &Apache::lonnet::repcopy($src);
4407: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4408: if ( (not -e $src) ||
4409: ($didrepcopy ne 'ok')) {
4410: &Apache::lonxml::debug("Failed to find or replicate $src");
4411:
4412: #if replication failed try to produce eps file dynamically
4413: $src=~s/\.ps$/\.eps/;
4414: my $temp_file;
4415: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4416: my $newsrc=$orig_src;
4417: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4418: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4419: print FILE ("$newsrc\n");
4420: close(FILE);
4421: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4422: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4423: if ($sext ne "") { # Put the ext. back in to uniquify.
4424: $src =~ s/\.eps$/$sext.eps/;
4425: }
4426:
4427: }
4428:
4429: }
4430: } else {
4431: # If the postscript file has spaces in its name,
4432: # LaTeX will gratuitiously vomit. Therefore
4433: # queue such files for copy with " " replaced by "_".
4434: # printout.pm will know them by their .ps or .eps extensions.
4435: my $newsrc = $orig_src;
4436: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4437: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4438: print FILE "$src\n";
4439: close FILE;
4440: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4441: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4442: }
4443: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4444: $path =~ s/ /\_/g;
4445: $file =~ s/ /\_/g;
4446: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4447: return ($path.'/',$file);
4448: }
4449:
4450: sub eps_generation {
4451: my ($src,$file,$width_param) = @_;
4452: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4453: my $temp_file = Apache::File->new('>>'.$filename);
4454: print $temp_file "$src\n";
4455: my $newsrc = $src;
4456: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4457: $newsrc=~s{/home/httpd/html/res}{};
4458: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4459: $newsrc=~s{/\./}{/};
4460: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4461: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4462: $newsrc=~s{/home/httpd/lonUsers}{};
4463: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4464: }
4465: if ($newsrc=~m{/userfiles/}) {
4466: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4467: } else {
4468: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4469: }
4470: }
4471:
4472: sub file_path {
4473: my $src=shift;
4474: my ($file,$path);
4475: if ($src =~ m!(.*)/([^/]*)$!) {
4476: $file = $2;
4477: $path = $1.'/';
4478: }
4479: return $file,$path;
4480: }
4481: # Converts a measurement in to mm from any of
4482: # the other valid LaTeX units of measure.
4483: # If the units of measure are missing from the
4484: # parameter, it is assumed to be in and returned
4485: # with mm units of measure
4486: sub recalc {
4487: my $argument = shift;
4488: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4489: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4490: my $value=$1;
4491: my $units=$2;
4492: if ($units eq 'cm') {
4493: $value*=10;
4494: } elsif ($units eq 'in') {
4495: $value*=25.4;
4496: } elsif ($units eq 'pc') {
4497: $value*=(25.4*12/72.27);
4498: } elsif ($units eq 'pt') {
4499: $value*=(25.4/72.27);
4500: }
4501: return $value.' mm';
4502: }
4503:
4504: sub LATEX_length {
4505: my $garbage=shift;
4506: $garbage=~s/^\s+$//;
4507: $garbage=~s/^\s+(\S.*)/$1/;#space before
4508: $garbage=~s/(.*\S)\s+$/$1/;#space after
4509: $garbage=~s/(\s)+/$1/;#only one space
4510: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4511: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4512: $garbage=~s/([^\\])\$/$1/g;#$
4513: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4514: $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;
4515: $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;
4516: $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;
4517: $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;
4518: $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;
4519: $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;
4520: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4521: #remove some other LaTeX command
4522: $garbage=~s|\\(\w+)\\|\\|g;
4523: $garbage=~s|\\(\w+)(\s*)|$2|g;
4524: $garbage=~s|\+|11|g;
4525: my $value=length($garbage);
4526: return $value;
4527: }
4528:
4529: # Wrap image 'stuff' inside of the LaTeX required to implement
4530: # alignment:
4531: # align_tex_image(align, latex_rendering, image)
4532: # Where:
4533: # align - The HTML alignment specification.
4534: # latex_rendering - rendering hint for latex.
4535: # image - The LaTeX needed to insert the image itsef.
4536: # width,height - dimensions of the image.
4537: # Returns:
4538: # The 1/2 wrapped image and the stuff required to close the
4539: # wrappage. This allows e.g. randomlabel to insert more stuff
4540: # into the closure.
4541: #
4542: sub align_latex_image {
4543: my ($align, $latex_rendering, $image, $width, $height) = @_;
4544: my $currentstring; # The 1/2 wrapped image.
4545: my $closure; # The closure of the wrappage.
4546:
4547: # if it's none just return it back
4548: if ($latex_rendering eq 'none') {
4549: return ($image,'');
4550: }
4551:
4552: # If there's an alignment specification we need to honor it here.
4553: # For the horizontal alignments, we will also honor the
4554: # value of the latex specfication. The default is parbox,
4555: # and that's used for illegal values too.
4556: #
4557: # Even though we set a default alignment value, the user
4558: # could have given us an illegal value. In that case we
4559: # just use the default alignment of bottom..
4560: $currentstring = "\n% figurewrapping \n";
4561: if ($align eq "top") {
4562: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4563: $closure = '}';
4564: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4565: my $offset = $height/2;
4566: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4567: $closure = '}';
4568: } elsif ($align eq "left") {
4569: if ($latex_rendering eq "parpic") {
4570: $currentstring .= '\parpic[l]{'.$image;
4571: $closure = '}';
4572: } elsif ($latex_rendering eq "parbox") {
4573: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4574: .$image;
4575: $closure = '\end{minipage}';
4576: } elsif ($latex_rendering eq "wrapfigure"
4577: || $latex_rendering ne 'none') { # wrapfig render
4578: $currentstring .=
4579: '\begin{wrapfigure}{l}{'.$width.'mm}'
4580: .'\scalebox{1.0}{'.$image;
4581: $closure = '}\end{wrapfigure}';
4582: }
4583: } elsif ($align eq "right") {
4584: if ($latex_rendering eq "parpic") {
4585: $currentstring .= '\parpic[r]{'.$image;
4586: $closure = '}';
4587: } elsif ($latex_rendering eq "parbox") {
4588: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4589: .$image;
4590: $closure = '\end{minipage}';
4591: } elsif ($latex_rendering eq "wrapfigure"
4592: || $latex_rendering ne 'none') { # wrapfig render
4593: $currentstring .=
4594: '\begin{wrapfigure}{r}{'.$width.'mm}'
4595: .'\scalebox{1.0}{'.$image;
4596: $closure = '}\end{wrapfigure}';
4597: }
4598: } else { # Bottom is also default.
4599: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4600: $currentstring .= "{$image";
4601: $closure = '}';
4602: }
4603: $currentstring .= "\n% end wrappage\n";
4604: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4605: return ($currentstring, $closure);
4606: }
4607:
4608: # is_inside_of $tagstack $tag
4609: # This sub returns true if the current state of Xml processing
4610: # is inside of the tag.
4611: # Parameters:
4612: # tagstack - The tagstack from the parser.
4613: # tag - The tag (without the <>'s.).
4614: # Sample usage:
4615: # if (is_inside_of($tagstack "table")) {
4616: # # I'm in a table....
4617: # }
4618: sub is_inside_of {
4619: my ($tagstack, $tag) = @_;
4620: my @stack = @$tagstack;
4621: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4622: if ($stack[$i] eq $tag) {
4623: return 1;
4624: }
4625: }
4626: return 0;
4627: }
4628:
4629:
4630: 1;
4631: __END__
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