File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.362:
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Fri Apr 6 10:23:46 2007 UTC (17 years, 2 months ago) by
foxr
Branches:
MAIN
CVS tags:
HEAD
Fix width calculation for tables... not the best fix but at present
I don't understand what the intent was and I think the original author
may have been clever enough to confuse himself too.
- Fix consists of forcing table widths to always believe they are calculating
percentage of full line width.. since
o that seems to work.
o If a TeXwidth="aa%" is specified the absolute width is calculated
and scaling is evidently done correctly anyway.
- This is hopefully in response to the last gasps of BZ 4967
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.362 2007/04/06 10:23:46 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: 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=$$parstack[$#$parstack]; }
412: if ($args eq '') {
413: &Apache::lonxml::get_all_text("/meta",$parser,$style);
414: } else {
415: $currentstring = $token->[4];
416: }
417: } elsif ($target eq 'meta') {
418: unless (&Apache::lonxml::get_param
419: ('http-equiv',$parstack,$safeeval,undef,1)) {
420: my $name=$token->[2]->{'name'};
421: $name=~tr/A-Z/a-z/;
422: $name=~s/\s/\_/gs;
423: $name=~s/\W//gs;
424: if ($name) {
425: $currentstring='<'.$name;
426: my $display=&Apache::lonxml::get_param
427: ('display',$parstack,$safeeval,undef,1);
428: if ($display) {
429: $display=~s/\"/\'/g;
430: $currentstring.=' display="'.$display.'"';
431: }
432: $currentstring.='>'.
433: &Apache::lonxml::get_param
434: ('content',$parstack,$safeeval,undef,1).
435: '</'.$name.'>';
436: }
437: my $display=&Apache::lonxml::get_param
438: ('display',$parstack,$safeeval,undef,1);
439: if ($display) {
440: $display=&HTML::Entities::encode($display,'<>&"');
441: $currentstring.='<'.$name.'.display>'.$display.
442: '</'.$name.'.display>';
443: }
444: }
445: } elsif ($target eq 'tex') {
446: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
447: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
448: if ((not defined $content) && (not defined $name)) {
449: &Apache::lonxml::startredirection();
450: }
451: }
452: return $currentstring;
453: }
454:
455: sub end_meta {
456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
457: my $currentstring = '';
458: if ($target eq 'web' || $target eq 'webgrade') {
459: my $args='';
460: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
461: if ($args ne '') {
462: $currentstring = $token->[4];
463: }
464: } elsif ($target eq 'tex') {
465: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
466: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
467: if ((not defined $content) && (not defined $name)) {
468: &Apache::lonxml::endredirection();
469: }
470: }
471: return $currentstring;
472: }
473:
474: # accessrule
475: sub start_accessrule {
476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
477: my $currentstring = '';
478: my $eff=&Apache::lonxml::get_param
479: ('effect',$parstack,$safeeval,undef,1);
480: my $realm=&Apache::lonxml::get_param
481: ('realm',$parstack,$safeeval,undef,1);
482: my $role=&Apache::lonxml::get_param
483: ('role',$parstack,$safeeval,undef,1);
484: $realm=~s/\s+//g;
485: $realm=~s/\//\_/g;
486: $realm=~s/^\_//;
487: $realm=~s/\W/\;/g;
488: $role=~s/\s+//g;
489: $role=~s/\//\_/g;
490: $role=~s/\W/\;/g;
491: if ($target eq 'web') {
492: my $args='';
493: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
494: if ($args eq '') {
495: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
496: } else {
497: $currentstring = $token->[4];
498: }
499: }
500: if ($target eq 'meta') {
501: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
502: }
503: return $currentstring;
504: }
505:
506: sub end_accessrule {
507: my ($target,$token,$tagstack,$parstack,$parser) = @_;
508: my $currentstring = '';
509: if ($target eq 'web') {
510: my $args='';
511: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
512: if ($args ne '') {
513: $currentstring = $token->[4];
514: }
515: }
516: return $currentstring;
517: }
518:
519: #-- <body> tag (end tag required)
520: sub start_body {
521: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
522: my $currentstring = '';
523:
524: if ($target eq 'web' || $target eq 'webgrade') {
525: if ($Apache::lonhomework::parsing_a_problem) {
526: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
527: return '';
528: }
529:
530: if (&is_inside_of($tagstack, "head")) {
531: &end_head(@_);
532: }
533: $currentstring =
534: &Apache::loncommon::start_page($Apache::londefdef::title,
535: $Apache::londefdef::head,
536: {'add_entries' => $token->[2],
537: 'no_title' => 1,
538: 'force_register' => 1});
539:
540: if ($env{'request.state'} ne 'published') {
541: $currentstring.=&Apache::lonmenu::constspaceform();
542: $currentstring.=(<<EDITBUTTON);
543: <form method="post">
544: <input type="submit" name="editmode" accesskey="e" value="Edit" />
545: </form>
546: <br />
547: EDITBUTTON
548: }
549: $currentstring.=&Apache::lonxml::message_location();
550: } elsif ($target eq 'tex') {
551: $currentstring = '\begin{document}';
552: }
553: return $currentstring;
554: }
555:
556: sub end_body {
557: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
558: my $currentstring = &end_p(); # Close off unclosed <p>
559: if ($target eq 'web' || $target eq 'webgrade') {
560: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
561: } elsif ($target eq 'tex') {
562: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
563: }
564: return $currentstring;
565: }
566:
567: # \begin{center} causes a new paragprah spacing that looks odd inside
568: # of a table cell. Same at the end of a \center but with a slightly
569: # larger space .. hence center_correction and center_end_correction.
570: #
571: sub center_correction { return '\vspace*{-6 mm}'; }
572: sub center_end_correction { return '\vspace*{-7 mm}'; }
573:
574: #-- <center> tag (end tag required)
575: sub start_center {
576: my ($target,$token,$tagstack) = @_;
577: my $currentstring = &end_p(); # Close off any prior para.
578: if ($target eq 'web' || $target eq 'webgrade') {
579: $currentstring .= $token->[4];
580: } elsif ($target eq 'tex') {
581: if (&is_inside_of($tagstack, "table")) {
582: $currentstring .= ¢er_correction();
583: }
584: $currentstring .= '\begin{center}';
585: }
586: return $currentstring;
587: }
588:
589: sub end_center {
590: my ($target,$token,$tagstack) = @_;
591: my $currentstring = '';
592: if ($target eq 'web' || $target eq 'webgrade') {
593: $currentstring = $token->[2];
594: } elsif ($target eq 'tex') {
595: $currentstring = '\end{center}';
596: if (&is_inside_of($tagstack, "table")) {
597: $currentstring .= ¢er_end_correction();
598: }
599: }
600: return $currentstring;
601: }
602:
603: #-- <b> tag (end tag required)
604: # NOTE: In TeX mode disables internal <p>
605: sub start_b {
606: my ($target,$token) = @_;
607: my $currentstring = '';
608: if ($target eq 'web' || $target eq 'webgrade') {
609: $currentstring = $token->[4];
610: } elsif ($target eq 'tex') {
611: &disable_para();
612: $currentstring .= '\textbf{';
613: }
614: return $currentstring;
615: }
616:
617: sub end_b {
618: my ($target,$token) = @_;
619: my $currentstring = '';
620: if ($target eq 'web' || $target eq 'webgrade') {
621: $currentstring = $token->[2];
622: } elsif ($target eq 'tex') {
623: &enable_para();
624: $currentstring = '}';
625: }
626: return $currentstring;
627: }
628:
629: #-- <strong> tag (end tag required)
630: # NOTE: in TeX mode disables internal <p>
631: sub start_strong {
632: my ($target,$token) = @_;
633: my $currentstring = '';
634: if ($target eq 'web' || $target eq 'webgrade') {
635: $currentstring = $token->[4];
636: } elsif ($target eq 'tex') {
637: &disable_para();
638: $currentstring = '\textbf{';
639: }
640: return $currentstring;
641: }
642:
643: sub end_strong {
644: my ($target,$token) = @_;
645: my $currentstring = '';
646: if ($target eq 'web' || $target eq 'webgrade') {
647: $currentstring = $token->[2];
648: } elsif ($target eq 'tex') {
649: &enable_para();
650: $currentstring = '}';
651: }
652: return $currentstring;
653: }
654:
655: #-- <h1> tag (end tag required)
656: sub start_h1 {
657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
658: my $currentstring = &end_p(); # Close off any prior para.
659: if ($target eq 'web' || $target eq 'webgrade') {
660: $currentstring .= $token->[4];
661: } elsif ($target eq 'tex') {
662: my $pre;
663: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
664: if ($align eq 'center') {
665: $pre='\begin{center}';
666: } elsif ($align eq 'left') {
667: $pre='\rlap{';
668: } elsif ($align eq 'right') {
669: $pre=' \hfill \llap{';
670: }
671: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
672: if (not defined $TeXsize) {$TeXsize="large";}
673: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
674: } elsif ($target eq 'meta') {
675: $currentstring.='<subject>';
676: &start_output($target);
677: }
678: return $currentstring;
679: }
680:
681: sub end_h1 {
682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
683: my $currentstring = '';
684: if ($target eq 'web' || $target eq 'webgrade') {
685: $currentstring .= $token->[2];
686: } elsif ($target eq 'tex') {
687: my $post='\vskip 0 mm ';
688: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
689: if ($align eq 'center') {
690: $post='\end{center}';
691: } elsif ($align eq 'left') {
692: $post='} \hfill'.'\vskip 0 mm ';
693: } elsif ($align eq 'right') {
694: $post='}'.'\vskip 0 mm ';
695: }
696: $currentstring .= '}}'.$post;
697: } elsif ($target eq 'meta') {
698: &end_output($target);
699: $currentstring='</subject>';
700: }
701: return $currentstring;
702: }
703:
704: #-- <h2> tag
705: sub start_h2 {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
707: my $currentstring = &end_p(); # Close off any prior para.
708: if ($target eq 'web' || $target eq 'webgrade') {
709: $currentstring .= $token->[4];
710: } elsif ($target eq 'tex') {
711: my $pre;
712: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
713: if ($align eq 'center') {
714: $pre='\begin{center}';
715: } elsif ($align eq 'left') {
716: $pre='\rlap{';
717: } elsif ($align eq 'right') {
718: $pre=' \hfill \llap{';
719: }
720: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
721: if (not defined $TeXsize) {$TeXsize="large";}
722: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
723: }
724: return $currentstring;
725: }
726:
727: sub end_h2 {
728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
729: my $currentstring = '';
730: if ($target eq 'web' || $target eq 'webgrade') {
731: $currentstring .= $token->[2];
732: } elsif ($target eq 'tex') {
733: my $post='\vskip 0 mm ';
734: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
735: if ($align eq 'center') {
736: $post='\end{center}';
737: } elsif ($align eq 'left') {
738: $post='} \hfill'.'\vskip 0 mm ';
739: } elsif ($align eq 'right') {
740: $post='}'.'\vskip 0 mm ';
741: }
742: $currentstring .= '}}'.$post;
743: }
744: return $currentstring;
745: }
746:
747: #-- <h3> tag
748: sub start_h3 {
749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
750: my $currentstring = &end_p(); # Close off any prior para.
751: if ($target eq 'web' || $target eq 'webgrade') {
752: $currentstring .= $token->[4];
753: } elsif ($target eq 'tex') {
754: my $pre;
755: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
756: if ($align eq 'center') {
757: $pre='\begin{center}';
758: } elsif ($align eq 'left') {
759: $pre='\rlap{';
760: } elsif ($align eq 'right') {
761: $pre=' \hfill \llap{';
762: }
763: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
764: if (not defined $TeXsize) {$TeXsize="large";}
765: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
766: }
767: return $currentstring;
768: }
769:
770: sub end_h3 {
771: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
772: my $currentstring = '';
773: if ($target eq 'web' || $target eq 'webgrade') {
774: $currentstring .= $token->[2];
775: } elsif ($target eq 'tex') {
776: my $post='\vskip 0 mm ';
777: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
778: if ($align eq 'center') {
779: $post='\end{center}';
780: } elsif ($align eq 'left') {
781: $post='} \hfill'.'\vskip 0 mm ';
782: } elsif ($align eq 'right') {
783: $post='}'.'\vskip 0 mm ';
784: }
785: $currentstring .= '}}'.$post;
786: }
787: return $currentstring;
788: }
789:
790: #-- <h4> tag
791: sub start_h4 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = &end_p(); # Close off any prior para.
794: if ($target eq 'web' || $target eq 'webgrade') {
795: $currentstring .= $token->[4];
796: } elsif ($target eq 'tex') {
797: my $pre;
798: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
799: if ($align eq 'center') {
800: $pre='\begin{center}';
801: } elsif ($align eq 'left') {
802: $pre='\rlap{';
803: } elsif ($align eq 'right') {
804: $pre=' \hfill \llap{';
805: }
806: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
807: if (not defined $TeXsize) {$TeXsize="large";}
808: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
809: }
810: return $currentstring;
811: }
812:
813: sub end_h4 {
814: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
815: my $currentstring = '';
816: if ($target eq 'web' || $target eq 'webgrade') {
817: $currentstring .= $token->[2];
818: } elsif ($target eq 'tex') {
819: my $post='\vskip 0 mm ';
820: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
821: if ($align eq 'center') {
822: $post='\end{center}';
823: } elsif ($align eq 'left') {
824: $post='} \hfill'.'\vskip 0 mm ';
825: } elsif ($align eq 'right') {
826: $post='}'.'\vskip 0 mm ';
827: }
828: $currentstring .= '}}'.$post;
829: }
830: return $currentstring;
831: }
832:
833: #-- <h5> tag
834: sub start_h5 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = &end_p(); # Close off any prior paras.
837: if ($target eq 'web' || $target eq 'webgrade') {
838: $currentstring .= $token->[4];
839: } elsif ($target eq 'tex') {
840: my $pre;
841: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
842: if ($align eq 'center') {
843: $pre='\begin{center}';
844: } elsif ($align eq 'left') {
845: $pre='\rlap{';
846: } elsif ($align eq 'right') {
847: $pre=' \hfill \llap{';
848: }
849: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
850: if (not defined $TeXsize) {$TeXsize="large";}
851: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
852: }
853: return $currentstring;
854: }
855:
856: sub end_h5 {
857: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
858: my $currentstring = '';
859: if ($target eq 'web' || $target eq 'webgrade') {
860: $currentstring .= $token->[2];
861: } elsif ($target eq 'tex') {
862: my $post='\vskip 0 mm ';
863: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
864: if ($align eq 'center') {
865: $post='\end{center}';
866: } elsif ($align eq 'left') {
867: $post='} \hfill'.'\vskip 0 mm ';
868: } elsif ($align eq 'right') {
869: $post='}'.'\vskip 0 mm ';
870: }
871: $currentstring .= '}}'.$post;
872: }
873: return $currentstring;
874: }
875:
876: #-- <h6> tag
877: sub start_h6 {
878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
879: my $currentstring = &end_p(); # Close off any prior paras.
880: if ($target eq 'web' || $target eq 'webgrade') {
881: $currentstring .= $token->[4];
882: } elsif ($target eq 'tex') {
883: my $pre;
884: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
885: if ($align eq 'center') {
886: $pre='\begin{center}';
887: } elsif ($align eq 'left') {
888: $pre='\rlap{';
889: } elsif ($align eq 'right') {
890: $pre=' \hfill \llap{';
891: }
892: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
893: if (not defined $TeXsize) {$TeXsize="large";}
894: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
895: }
896: return $currentstring;
897: }
898:
899: sub end_h6 {
900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
901: my $currentstring = '';
902: if ($target eq 'web' || $target eq 'webgrade') {
903: $currentstring .= $token->[2];
904: } elsif ($target eq 'tex') {
905: my $post='\vskip 0 mm ';
906: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
907: if ($align eq 'center') {
908: $post='\end{center}';
909: } elsif ($align eq 'left') {
910: $post='} \hfill'.'\vskip 0 mm ';
911: } elsif ($align eq 'right') {
912: $post='}'.'\vskip 0 mm ';
913: }
914: $currentstring .= '}}'.$post;
915: }
916: return $currentstring;
917: }
918:
919: #--- <cite> tag (end tag required)
920: sub start_cite {
921: my ($target,$token) = @_;
922: my $currentstring = '';
923: if ($target eq 'web' || $target eq 'webgrade') {
924: $currentstring .= $token->[4];
925: } elsif ($target eq 'tex') {
926: $currentstring .= '\textit{';
927: }
928: return $currentstring;
929: }
930:
931: sub end_cite {
932: my ($target,$token) = @_;
933: my $currentstring = '';
934: if ($target eq 'web' || $target eq 'webgrade') {
935: $currentstring .= $token->[2];
936: } elsif ($target eq 'tex') {
937: $currentstring .= '}';
938: }
939: return $currentstring;
940: }
941:
942: #-- <i> tag (end tag required)
943: sub start_i {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '\textit{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_i {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web' || $target eq 'webgrade') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '}';
961: }
962: return $currentstring;
963: }
964:
965: #-- <address> tag (end tag required)
966: sub start_address {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[4];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '\textit{';
973: }
974: return $currentstring;
975: }
976:
977: sub end_address {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[2];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '}';
984: }
985: return $currentstring;
986: }
987:
988: #-- <dfn> tag (end tag required)
989: sub start_dfn {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web' || $target eq 'webgrade') {
993: $currentstring .= $token->[4];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '\textit{';
996: }
997: return $currentstring;
998: }
999:
1000: sub end_dfn {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[2];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '}';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <tt> tag (end tag required)
1012: sub start_tt {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '\texttt{';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: sub end_tt {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[2];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '}';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: #-- <kbd> tag (end tag required)
1035: sub start_kbd {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web' || $target eq 'webgrade') {
1039: $currentstring .= $token->[4];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '\texttt{';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: sub end_kbd {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[2];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '}';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: #-- <code> tag (end tag required)
1058: sub start_code {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[4];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '\texttt{';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: sub end_code {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[2];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '}';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: #-- <em> tag (end tag required)
1081: sub start_em {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[4];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '\emph{';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: sub end_em {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[2];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '}';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: #-- <q> tag (end tag required)
1104: sub start_q {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '\emph{';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_q {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[2];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '}';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: # <p> is a bit strange since it does not require a closing </p>
1127: # However in latex, we must often output closing stuff to end
1128: # environments and {}'s etc. Therefore we do all the work
1129: # of figuring out the ending strings in the start tag processing,
1130: # and provide a mechanism to output the stop text external
1131: # to tag processing.
1132: #
1133: {
1134:
1135: my $closing_string = ''; # String required to close <p>
1136:
1137: # Some tags are <p> fragile meaning that <p> inside of them
1138: # does not work within TeX mode. This is managed via the
1139: # counter below:
1140: #
1141:
1142: my $para_disabled = 0;
1143:
1144: sub disable_para {
1145: $para_disabled++;
1146: }
1147: sub enable_para {
1148: $para_disabled--;
1149: }
1150:
1151:
1152: #-- <p> tag (end tag optional)
1153: #optional attribute - align="center|left|right"
1154: sub start_p {
1155: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1156: my $currentstring = '';
1157: if ($target eq 'web' || $target eq 'webgrade') {
1158: $currentstring .= &end_p(); # close off prior para if in progress.
1159: $currentstring .= $token->[4];
1160: if (! ($currentstring =~ /\//)) {
1161: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1162: }
1163: } elsif ($target eq 'tex' && !$para_disabled) {
1164:
1165: $currentstring .= &end_p(); # close off prior para if in progress.
1166: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1167: if ($align eq 'center') {
1168: $currentstring .='\begin{center}\par ';
1169: $closing_string = '\end{center}';
1170: if (&is_inside_of($tagstack, "table")) {
1171: $currentstring = ¢er_correction().$currentstring;
1172: }
1173: } elsif ($align eq 'right') {
1174: $currentstring.="\n".'{\flushright ';
1175: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1176: $closing_string= "}\n";
1177: } elsif ($align eq 'left') {
1178: $currentstring.= "\n".'{\flushleft ';
1179: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1180: $closing_string = "}\n";
1181: } else {
1182: $currentstring.='\par ';
1183: if (&is_inside_of($tagstack, 'table')) {
1184: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1185: } else {
1186: $closing_string = '\strut\\\\\strut ';
1187: }
1188: }
1189:
1190: }
1191: return $currentstring;
1192: }
1193: #
1194: # End paragraph processing just requires that we output the
1195: # closing string that was saved and blank it.
1196: sub end_p {
1197: # Note only 'tex' mode uses disable_para and enable_para
1198: # so we don't need to know the target in the check below:
1199:
1200: if (!$para_disabled) {
1201: my $current_string = $closing_string;
1202: $closing_string = ''; # Not in a para anymore.
1203: return $current_string;
1204: } else {
1205: return '';
1206: }
1207:
1208: }
1209: }
1210: #-- <br> tag (end tag forbidden)
1211: sub start_br {
1212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1213: my $currentstring = '';
1214: if ($target eq 'web' || $target eq 'webgrade') {
1215: $currentstring .= $token->[4];
1216: } elsif ($target eq 'tex') {
1217: my @tempo=@$tagstack;
1218: my $signal=0;
1219: # Not going to factor this to is_inside_of since that would require
1220: # multiple stack traversals.
1221: #
1222: for (my $i=$#tempo;$i>=0;$i--) {
1223: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1224: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1225: $signal=1;
1226: }
1227: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1228: $signal = 1;
1229: }
1230: }
1231: if ($signal eq 1) {
1232: $currentstring .= ' \vskip 0 mm ';
1233: } else {
1234: $currentstring .= '\strut \\\\ \strut ';
1235: }
1236:
1237: }
1238: return $currentstring;
1239: }
1240:
1241: sub end_br {
1242: my ($target,$token) = @_;
1243: my $currentstring = '';
1244: if ($target eq 'web' || $target eq 'webgrade') {
1245: $currentstring .= $token->[2];
1246: }
1247: return $currentstring;
1248: }
1249:
1250: #-- <big> tag (end tag required)
1251: sub start_big {
1252: my ($target,$token) = @_;
1253: my $currentstring = '';
1254: if ($target eq 'web' || $target eq 'webgrade') {
1255: $currentstring .= $token->[4];
1256: } elsif ($target eq 'tex') {
1257: $currentstring .= '{\large ';
1258: }
1259: return $currentstring;
1260: }
1261:
1262: sub end_big {
1263: my ($target,$token) = @_;
1264: my $currentstring = '';
1265: if ($target eq 'web' || $target eq 'webgrade') {
1266: $currentstring .= $token->[2];
1267: } elsif ($target eq 'tex') {
1268: $currentstring .= '}';
1269: }
1270: return $currentstring;
1271: }
1272:
1273: #-- <small> tag (end tag required)
1274: sub start_small {
1275: my ($target,$token) = @_;
1276: my $currentstring = '';
1277: if ($target eq 'web' || $target eq 'webgrade') {
1278: $currentstring .= $token->[4];
1279: } elsif ($target eq 'tex') {
1280: $currentstring .= '{\footnotesize ';
1281: }
1282: return $currentstring;
1283: }
1284:
1285: sub end_small {
1286: my ($target,$token) = @_;
1287: my $currentstring = '';
1288: if ($target eq 'web' || $target eq 'webgrade') {
1289: $currentstring .= $token->[2];
1290: } elsif ($target eq 'tex') {
1291: $currentstring .= '}';
1292: }
1293: return $currentstring;
1294: }
1295:
1296: #-- <basefont> tag (end tag forbidden)
1297: sub start_basefont {
1298: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1299: my $currentstring = '';
1300: if ($target eq 'web' || $target eq 'webgrade') {
1301: $currentstring = $token->[4];
1302: } elsif ($target eq 'tex') {
1303: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1304: if (defined $basesize) {
1305: $currentstring = '{\\'.$basesize.' ';
1306: }
1307: }
1308: return $currentstring;
1309: }
1310:
1311: sub end_basefont {
1312: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1313: my $currentstring = '';
1314: if ($target eq 'web' || $target eq 'webgrade') {
1315: $currentstring = $token->[4];
1316: } elsif ($target eq 'tex') {
1317: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1318: if (defined $basesize) {
1319: $currentstring = '}';
1320: }
1321: }
1322: return $currentstring;
1323: }
1324:
1325: #-- <font> tag (end tag required)
1326: sub start_font {
1327: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1328: my $currentstring = '';
1329: if ($target eq 'web' || $target eq 'webgrade') {
1330: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1331: if ($face!~/symbol/i) {
1332: if (($env{'browser.fontenhance'} eq 'on') ||
1333: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1334: }
1335: $currentstring = $token->[4];
1336: } elsif ($target eq 'tex') {
1337: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1338: if (defined $fontsize) {
1339: $currentstring = '{\\'.$fontsize.' ';
1340: }
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_font {
1346: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1347: my $currentstring = '';
1348: if ($target eq 'web' || $target eq 'webgrade') {
1349: $currentstring = $token->[2];
1350: } elsif ($target eq 'tex') {
1351: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1352: if (defined $fontsize) {
1353: $currentstring = '}';
1354: }
1355: }
1356: return $currentstring;
1357: }
1358:
1359: #-- <strike> tag (end tag required)
1360: sub start_strike {
1361: my ($target,$token) = @_;
1362: my $currentstring = '';
1363: if ($target eq 'web' || $target eq 'webgrade') {
1364: $currentstring .= $token->[4];
1365: } elsif ($target eq 'tex') {
1366: &Apache::lonxml::startredirection();
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_strike {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web' || $target eq 'webgrade') {
1375: $currentstring .= $token->[2];
1376: } elsif ($target eq 'tex') {
1377: $currentstring=&Apache::lonxml::endredirection();
1378: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1379: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1380: $currentstring=~s/(\S)\s*$/$1\}/;
1381: }
1382: return $currentstring;
1383: }
1384:
1385: #-- <s> tag (end tag required)
1386: sub start_s {
1387: my ($target,$token) = @_;
1388: my $currentstring = '';
1389: if ($target eq 'web' || $target eq 'webgrade') {
1390: $currentstring .= $token->[4];
1391: } elsif ($target eq 'tex') {
1392: &Apache::lonxml::startredirection();
1393: }
1394: return $currentstring;
1395: }
1396:
1397: sub end_s {
1398: my ($target,$token) = @_;
1399: my $currentstring = '';
1400: if ($target eq 'web' || $target eq 'webgrade') {
1401: $currentstring .= $token->[2];
1402: } elsif ($target eq 'tex') {
1403: $currentstring=&Apache::lonxml::endredirection();
1404: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1405: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1406: $currentstring=~s/(\S)\s*$/$1\}/;
1407: }
1408: return $currentstring;
1409: }
1410:
1411: #-- <sub> tag (end tag required)
1412: sub start_sub {
1413: my ($target,$token) = @_;
1414: my $currentstring = '';
1415: if ($target eq 'web' || $target eq 'webgrade') {
1416: $currentstring .= $token->[4];
1417: } elsif ($target eq 'tex') {
1418: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1419: }
1420: return $currentstring;
1421: }
1422:
1423: sub end_sub {
1424: my ($target,$token) = @_;
1425: my $currentstring = '';
1426: if ($target eq 'web' || $target eq 'webgrade') {
1427: $currentstring .= $token->[2];
1428: } elsif ($target eq 'tex') {
1429: $currentstring .= '}}';
1430: }
1431: return $currentstring;
1432: }
1433:
1434: #-- <sup> tag (end tag required)
1435: sub start_sup {
1436: my ($target,$token) = @_;
1437: my $currentstring = '';
1438: if ($target eq 'web' || $target eq 'webgrade') {
1439: $currentstring .= $token->[4];
1440: } elsif ($target eq 'tex') {
1441: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1442: }
1443: return $currentstring;
1444: }
1445:
1446: sub end_sup {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web' || $target eq 'webgrade') {
1450: $currentstring .= $token->[2];
1451: } elsif ($target eq 'tex') {
1452: $currentstring .= '}}';
1453: }
1454: return $currentstring;
1455: }
1456:
1457: #-- <hr> tag (end tag forbidden)
1458: sub start_hr {
1459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1460: my $currentstring = &end_p(); # End enclosing para.
1461: if ($target eq 'web' || $target eq 'webgrade') {
1462: $currentstring .= $token->[4];
1463: } elsif ($target eq 'tex') {
1464:
1465: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1466: #
1467: my $restart_sub = 0;
1468: my $restart_sup = 0;
1469:
1470: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1471: # using the start_ stop_ functions.. those tags only care about
1472: # $target.
1473:
1474: if (&is_inside_of($tagstack, "sub")) {
1475: $restart_sub = 1;
1476: $currentstring .= &end_sub($target, $token, $tagstack,
1477: $parstack, $parser, $safeeval);
1478: }
1479: if (&is_inside_of($tagstack, "sup")) {
1480: $restart_sup = 1;
1481: $currentstring .= &end_sup($target, $token, $tagstack,
1482: $parstack, $parser, $safeeval);
1483: }
1484:
1485: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1486: if (defined $LaTeXwidth) {
1487: if ($LaTeXwidth=~/^%/) {
1488: substr($LaTeXwidth,0,1)='';
1489: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1490: }
1491: } else {
1492: $LaTeXwidth ='0.9\textwidth';
1493: }
1494: my ($pre,$post);
1495: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1496: if (($align eq 'center') || (not defined $align)) {
1497: $pre=''; $post='';
1498: } elsif ($align eq 'left') {
1499: $pre='\rlap{'; $post='} \hfill';
1500: } elsif ($align eq 'right') {
1501: $pre=' \hfill \llap{'; $post='}';
1502: }
1503: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1504: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1505: # Turn stuff back on that we can't be inside of.
1506:
1507: if ($restart_sub) {
1508: $currentstring .= &start_sub($target, $token, $tagstack,
1509: $parstack, $parser, $safeeval);
1510: }
1511: if ($restart_sup) {
1512: $currentstring .= &start_sup($target, $token, $tagstack,
1513: $parstack, $parser, $safeeval);
1514: }
1515: }
1516: return $currentstring;
1517: }
1518:
1519: sub end_hr {
1520: my ($target,$token) = @_;
1521: my $currentstring = '';
1522: if ($target eq 'web' || $target eq 'webgrade') {
1523: $currentstring .= $token->[2];
1524: }
1525: return $currentstring;
1526: }
1527:
1528: #-- <div> tag (end tag required)
1529: {
1530:
1531: # Since div can be nested, the stack below is used
1532: # in 'tex' mode to store the ending strings
1533: # for the div stack.
1534:
1535: my @div_end_stack;
1536:
1537: sub start_div {
1538: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1539: my $currentstring = &end_p(); # Close enclosing para.
1540: if ($target eq 'web' || $target eq 'webgrade') {
1541: $currentstring .= $token->[4];
1542: }
1543: if ($target eq 'tex') {
1544: # 4 possible alignments: left, right, center, and -missing-.
1545:
1546: my $endstring = '';
1547:
1548: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1549: $safeeval, undef, 1));
1550: if ($align eq 'center') {
1551: $currentstring .= '\begin{center}';
1552: $endstring = '\end{center}';
1553: if (&is_inside_of($tagstack, "table")) {
1554: $currentstring = ¢er_correction().$currentstring;
1555: }
1556: }
1557: elsif ($align eq 'right') {
1558: $currentstring .= '\begin{flushright}';
1559: $endstring .= '\end{flushright}';
1560: } elsif ($align eq 'left') {
1561: $currentstring .= '\begin{flushleft}';
1562: $endstring = '\end{flushleft}';
1563: } else {
1564:
1565: }
1566: $currentstring .= "\n"; # For human readability.
1567: $endstring = "\n$endstring\n"; # For human readability
1568: push(@div_end_stack, $endstring);
1569: }
1570: return $currentstring;
1571: }
1572:
1573: sub end_div {
1574: my ($target,$token) = @_;
1575: my $currentstring = '';
1576: if ($target eq 'web' || $target eq 'webgrade') {
1577: $currentstring .= $token->[2];
1578: }
1579: if ($target eq 'tex') {
1580: my $endstring = pop @div_end_stack;
1581: $currentstring .= $endstring;
1582: }
1583: return $currentstring;
1584: }
1585: }
1586:
1587: #-- <a> tag (end tag required)
1588: sub start_a {
1589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1590: my $currentstring = '';
1591: if ($target eq 'web' || $target eq 'webgrade') {
1592: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1593: undef,1);
1594: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1595: }
1596: return $currentstring;
1597: }
1598:
1599: sub end_a {
1600: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1601: my $currentstring = '';
1602: if ($target eq 'web' || $target eq 'webgrade') {
1603: $currentstring .= $token->[2];
1604: }
1605: if ($target eq 'tex') {
1606: my $href =
1607: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1608: my $name =
1609: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1610: if ($href =~ /\S/) {
1611: $href =~ s/([^\\])%/$1\\\%/g;
1612: $currentstring .= ' ({\tt URI:'.&Apache::lonxml::latex_special_symbols($href).'})';
1613: } elsif ($name =~ /\S/) {
1614: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1615: } else {
1616: $currentstring.='';
1617: }
1618: }
1619: return $currentstring;
1620: }
1621:
1622: #-- <li> tag (end tag optional)
1623: sub start_li {
1624: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1625: my $currentstring = '';
1626: if ($target eq 'web' || $target eq 'webgrade') {
1627: $currentstring = $token->[4];
1628: } elsif ($target eq 'tex') {
1629: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1630: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1631: #FIXME need to support types i and I
1632: if ($type=~/disc/) {
1633: $currentstring .= ' \item[$\bullet$] ';
1634: } elsif ($type=~/circle/) {
1635: $currentstring .= ' \item[$\circ$] ';
1636: } elsif ($type=~/square/) {
1637: $currentstring .= ' \item[$\diamond$] ';
1638: } elsif ($type eq '1') {
1639: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1640: } elsif ($type eq 'A') {
1641: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1642: } elsif ($type eq 'a') {
1643: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1644: } elsif ($value ne '') {
1645: $currentstring .= ' \item['.$value.'] ';
1646: } else {
1647: $currentstring .= ' \item ';
1648: }
1649: $Apache::londefdef::list_index++;
1650: }
1651: return $currentstring;
1652: }
1653:
1654: sub end_li {
1655: my ($target,$token) = @_;
1656: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1657: if ($target eq 'web' || $target eq 'webgrade') {
1658: $currentstring .= $token->[2];
1659: }
1660: return $currentstring;
1661: }
1662:
1663: #-- <u> tag (end tag required)
1664: sub start_u {
1665: my ($target,$token) = @_;
1666: my $currentstring = '';
1667: if ($target eq 'web' || $target eq 'webgrade') {
1668: $currentstring .= $token->[4];
1669: } elsif ($target eq 'tex') {
1670: &Apache::lonxml::startredirection();
1671: }
1672: return $currentstring;
1673: }
1674:
1675: sub end_u {
1676: my ($target,$token) = @_;
1677: my $currentstring = '';
1678: if ($target eq 'web' || $target eq 'webgrade') {
1679: $currentstring .= $token->[2];
1680: } elsif ($target eq 'tex') {
1681: $currentstring=&Apache::lonxml::endredirection();
1682: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1683: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1684: $currentstring=~s/(\S)\s*$/$1\}/;
1685: }
1686: return $currentstring;
1687: }
1688:
1689: #-- <ul> tag (end tag required)
1690: sub start_ul {
1691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1692: my $currentstring = &end_p(); # Close off enclosing list.
1693: if ($target eq 'web' || $target eq 'webgrade') {
1694: $currentstring .= $token->[4];
1695: } elsif ($target eq 'tex') {
1696: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1697: $Apache::londefdef::list_index=0;
1698: if ($TeXtype eq 'disc') {
1699: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1700: '\renewcommand{\labelitemii}{$\bullet$}'.
1701: '\renewcommand{\labelitemiii}{$\bullet$}'.
1702: '\renewcommand{\labelitemiv}{$\bullet$}';
1703: } elsif ($TeXtype eq 'circle') {
1704: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1705: '\renewcommand{\labelitemii}{$\circ$}'.
1706: '\renewcommand{\labelitemiii}{$\circ$}'.
1707: '\renewcommand{\labelitemiv}{$\circ$}';
1708: } elsif ($TeXtype eq 'square') {
1709: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1710: '\renewcommand{\labelitemii}{$\diamond$}'.
1711: '\renewcommand{\labelitemiii}{$\diamond$}'.
1712: '\renewcommand{\labelitemiv}{$\diamond$}';
1713: }
1714: $currentstring .= '\strut \begin{itemize}';
1715: }
1716: return $currentstring;
1717: }
1718:
1719: sub end_ul {
1720: my ($target,$token) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web' || $target eq 'webgrade') {
1723: $currentstring = $token->[2];
1724: } elsif ($target eq 'tex') {
1725: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1726: '\renewcommand{\labelitemii}{$\bullet$}'.
1727: '\renewcommand{\labelitemiii}{$\bullet$}'.
1728: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1729: }
1730: return $currentstring;
1731: }
1732:
1733: #-- <menu> tag (end tag required)
1734: sub start_menu {
1735: my ($target,$token) = @_;
1736: my $currentstring = '';
1737: if ($target eq 'web' || $target eq 'webgrade') {
1738: $currentstring = $token->[4];
1739: } elsif ($target eq 'tex') {
1740: $currentstring = " \\begin{itemize} ";
1741: }
1742: return $currentstring;
1743: }
1744:
1745: sub end_menu {
1746: my ($target,$token) = @_;
1747: my $currentstring = '';
1748: if ($target eq 'web' || $target eq 'webgrade') {
1749: $currentstring = $token->[2];
1750: } elsif ($target eq 'tex') {
1751: $currentstring = " \\end{itemize}";
1752: }
1753: return $currentstring;
1754: }
1755:
1756: #-- <dir> tag (end tag required)
1757: sub start_dir {
1758: my ($target,$token) = @_;
1759: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1760: if ($target eq 'web' || $target eq 'webgrade') {
1761: $currentstring .= $token->[4];
1762: } elsif ($target eq 'tex') {
1763: $currentstring .= " \\begin{itemize} ";
1764: }
1765: return $currentstring;
1766: }
1767:
1768: sub end_dir {
1769: my ($target,$token) = @_;
1770: my $currentstring = '';
1771: if ($target eq 'web' || $target eq 'webgrade') {
1772: $currentstring = $token->[2];
1773: } elsif ($target eq 'tex') {
1774: $currentstring = " \\end{itemize}";
1775: }
1776: return $currentstring;
1777: }
1778:
1779: #-- <ol> tag (end tag required)
1780: sub start_ol {
1781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1782: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1783: if ($target eq 'web' || $target eq 'webgrade') {
1784: $currentstring .= $token->[4];
1785: } elsif ($target eq 'tex') {
1786: $Apache::londefdef::list_index=0;
1787: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1788: if ($type eq '1') {
1789: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1790: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1791: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1792: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1793: } elsif ($type eq 'A') {
1794: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1795: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1796: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1797: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1798: } elsif ($type eq 'a') {
1799: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1800: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1801: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1802: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1803: } elsif ($type eq 'i') {
1804: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1805: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1806: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1807: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1808: } elsif ($type eq 'I') {
1809: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1810: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1811: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1812: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1813: }
1814: $currentstring .= '\strut \begin{enumerate}';
1815: }
1816: return $currentstring;
1817: }
1818:
1819: sub end_ol {
1820: my ($target,$token) = @_;
1821: my $currentstring = '';
1822: if ($target eq 'web' || $target eq 'webgrade') {
1823: $currentstring = $token->[2];
1824: } elsif ($target eq 'tex') {
1825: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1826: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1827: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1828: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1829: }
1830: return $currentstring;
1831: }
1832:
1833: #-- <dl> tag (end tag required)
1834: sub start_dl {
1835: my ($target,$token) = @_;
1836: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1837: if ($target eq 'web' || $target eq 'webgrade') {
1838: $currentstring .= $token->[4];
1839: } elsif ($target eq 'tex') {
1840: $currentstring .= '\begin{description}';
1841: $Apache::londefdef::DL++;
1842: push(@Apache::londefdef::description,[]);
1843: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1844: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1845: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1846: }
1847: return $currentstring;
1848: }
1849:
1850: sub end_dl {
1851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1852: my $currentstring = '';
1853: if ($target eq 'web' || $target eq 'webgrade') {
1854: $currentstring = $token->[2];
1855: } elsif ($target eq 'tex') {
1856: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1857: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1858: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1859: $currentstring.=' '.$element.' ';
1860: }
1861: pop(@Apache::londefdef::description);
1862: $currentstring.='\end{description}';
1863: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1864: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1865: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1866: $Apache::londefdef::DL--;
1867: }
1868: return $currentstring;
1869: }
1870:
1871: #-- <dt> tag (end tag optional)
1872: sub start_dt {
1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1874: my $currentstring='';
1875: if ($target eq 'web' || $target eq 'webgrade') {
1876: $currentstring = $token->[4];
1877: } elsif ($target eq 'tex') {
1878: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1879: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1880: &Apache::lonxml::startredirection();
1881: $Apache::londefdef::DT[-1]++;
1882: $Apache::londefdef::seenDT[-1]=1;
1883: }
1884: return $currentstring;
1885: }
1886:
1887: sub end_dt {
1888: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1889: my $currentstring = '';
1890: if ($target eq 'web' || $target eq 'webgrade') {
1891: $currentstring = $token->[2];
1892: } elsif ($target eq 'tex') {
1893: if ($Apache::londefdef::DT[-1]) {
1894: my $data=&item_cleanup();
1895: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1896: $Apache::londefdef::DT[-1]--;
1897: }
1898: }
1899: return $currentstring;
1900: }
1901:
1902: sub item_cleanup {
1903: my $item=&Apache::lonxml::endredirection();
1904: $item=~s/\\begin{center}//g;
1905: $item=~s/\\end{center}//g;
1906: return $item;
1907: }
1908:
1909: #-- <dd> tag (end tag optional)
1910: sub start_dd {
1911: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1912: my $currentstring = '';
1913: if ($target eq 'web' || $target eq 'webgrade') {
1914: $currentstring = $token->[4];
1915: } elsif ($target eq 'tex') {
1916: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1917: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1918: if (!$Apache::londefdef::seenDT[-1]) {
1919: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1920: }
1921: push(@{$Apache::londefdef::description[-1]},'');
1922: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1923: $Apache::londefdef::DD[-1]++;
1924: &Apache::lonxml::startredirection();
1925: }
1926: return $currentstring;
1927: }
1928:
1929: sub end_dd {
1930: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1931: my $currentstring = '';
1932: if ($target eq 'web' || $target eq 'webgrade') {
1933: $currentstring = $token->[2];
1934: } elsif ($target eq 'tex') {
1935: $Apache::londefdef::description[-1]->[-1].=
1936: &Apache::lonxml::endredirection().' \vskip 0mm ';
1937: $Apache::londefdef::DD[-1]--;
1938: }
1939: return $currentstring;
1940: }
1941:
1942: #-- <table> tag (end tag required)
1943: # <table> also ends any prior <p> that is not closed.
1944: # but, unless I allow <p>'s to nest, that's the
1945: # only way I could think of to allow <p> in
1946: # <tr> <th> bodies
1947: #
1948: #list of supported attributes: border,width,TeXwidth
1949: sub start_table {
1950: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1951: my $textwidth = '';
1952: my $currentstring = &end_p();
1953: if ($target eq 'web' || $target eq 'webgrade') {
1954: $currentstring .= $token->[4];
1955: } elsif ($target eq 'tex') {
1956: push(@Apache::londefdef::table, {});
1957: $Apache::londefdef::table[-1]{'row_number'} = -1;
1958: #maximum table's width (default coincides with text line length)
1959: if ($#Apache::londefdef::table==0) {
1960: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1961: $textwidth=~/(\d+\.?\d*)/;
1962: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
1963: } else {
1964: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1965: #the maximum width of nested table is determined by LATeX width of parent cell
1966: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1967: } else {
1968: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1969: $textwidth=$Apache::londefdef::table[-2]{'width'};
1970: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1971: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1972: }
1973: }
1974: }
1975:
1976: # width either comes forced from the TeXwidth or the width parameters.
1977: # in either case it can be a percentage or absolute width.
1978: # in the width case we ignore absolute width
1979: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1980: if (!defined($TeXwidth)) {
1981: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
1982: $safeeval,undef,1);
1983: if ($htmlwidth =~ /%/) {
1984: $TeXwidth = $htmlwidth;
1985: } else {
1986: $TeXwidth = $textwidth;
1987: }
1988: } else {
1989: $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
1990: }
1991: # This stuff looks a bit hokey..
1992: # Percentage width is actually given as an absolute width..
1993: # but it appears that unless the 'percent' flag is set,
1994: # The table is just allowed to go to its natural width
1995: # for now let's always claim 'percent' is set..
1996: #
1997: if ($TeXwidth=~/%/) {
1998: $Apache::londefdef::table[-1]{'percent'}=1;
1999: $TeXwidth=~/(\d+)/;
2000: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2001: } else {
2002: $Apache::londefdef::table[-1]{'percent'} = 1; # kludge until we get the intent.
2003: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2004: }
2005: # In the end, however the table width cannot be wider than $textwidth...
2006:
2007: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2008: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2009: }
2010: #table's border
2011: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2012: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2013: unless (defined $border) { $border = 0; }
2014: if ($border) {
2015: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2016: $Apache::londefdef::table[-1]{'vinc'} = '&';
2017: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2018: } else {
2019: $Apache::londefdef::table[-1]{'hinc'} = '';
2020: $Apache::londefdef::table[-1]{'vinc'} = '&';
2021: $Apache::londefdef::table[-1]{'vvinc'} = '';
2022: }
2023: if ($#Apache::londefdef::table==0) {
2024: # Note that \newline seems to destroy the alignment envs.
2025: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2026: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2027: }
2028: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2029: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2030: $Apache::londefdef::table[-1]{'objectlen'}=[];
2031: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2032: $Apache::londefdef::table[-1]{'maxlen'}=[];
2033: $Apache::londefdef::table[-1]{'minlen'}=[];
2034: $Apache::londefdef::table[-1]{'content'}=[];
2035: $Apache::londefdef::table[-1]{'align'}=[];
2036: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2037:
2038:
2039: }
2040: return $currentstring;
2041: }
2042:
2043: sub end_table {
2044: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2045: my $currentstring = '';
2046: if ($target eq 'web' || $target eq 'webgrade') {
2047: $currentstring = $token->[2];
2048: } elsif ($target eq 'tex') {
2049: my $inmemory = '';
2050: my $output = '';
2051: my $WARNING='';
2052: #width of columns from TeXwidth attributes
2053:
2054: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2055: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2056: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2057: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2058: }
2059: }
2060: }
2061: #free space and number of empty columns
2062: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2063: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2064: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2065: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2066: $empty_columns++;
2067: } else {
2068: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2069: }
2070: }
2071:
2072: #boundaries for contents columns
2073: my @min_len=();#columns can not be narrower
2074: my @max_len=();#maximum length of column
2075: my $avg_max;
2076: my $avg_min;
2077: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2078: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2079: my ($localmin,$localmax)=(0,0);
2080: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2081: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2082: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2083: }
2084: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2085: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2086: }
2087: }
2088: push @min_len, $localmin;
2089: push @max_len, $localmax;
2090: $avg_max = $localmax + $avg_max;
2091: $avg_min = $localmin + $avg_min;
2092: }
2093: # Does not really matter what the average max/min are if there are no cols.
2094: # and this prevents div 0 in that case.
2095:
2096: if ($counter_cols != 0) {
2097: $avg_max = $avg_max/$counter_cols;
2098: $avg_min = $avg_min/$counter_cols;
2099: }
2100:
2101:
2102: # I don't think the below is needed.. but just in case:
2103:
2104: if ($avg_min > $avg_max) {
2105: my $temp = $avg_min;
2106: $avg_min = $avg_max;
2107: $avg_max = $temp;
2108: }
2109:
2110:
2111: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2112: my $localmin=0,;
2113: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2114: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2115: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2116: }
2117: }
2118: if ($max_len[$jn]<$localmin) {
2119: $max_len[$jn]=$localmin;
2120: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2121: }#object size is bigger
2122: if ($min_len[$jn]<$localmin) {
2123: $min_len[$jn]=$localmin;
2124: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2125: }#object size is bigger
2126: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2127: $min_len[$jn]=0;
2128: $max_len[$jn]=0;
2129: }
2130: # Spans seem to be really bothered by max/min = 0. So if we have one
2131: # make it an average joe max/min.
2132:
2133: if ($max_len[$jn] == 0) {
2134: $max_len[$jn] = $avg_max;
2135: }
2136: if ($min_len[$jn] == 0) {
2137: $min_len[$jn] = $avg_min;
2138: }
2139:
2140: }
2141: #final adjustment of column width
2142: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2143: my @adjust=();
2144: #step 1. adjustment by maximum value
2145: my $space_neeeded=0;
2146: for (my $jn=0;$jn<=$#max_len;$jn++) {
2147: $space_neeeded=$space_neeeded+$max_len[$jn];
2148: }
2149: if ($space_neeeded<=$available_space) {
2150:
2151: for (my $jn=0;$jn<=$#max_len;$jn++) {
2152: if ($fwidth[$jn]==0) {
2153: $fwidth[$jn]=$max_len[$jn];
2154: }
2155: }
2156: } else {
2157: #step 2. adjustment by minimum value (estimation)
2158: $space_neeeded=0;
2159: for (my $jn=0;$jn<=$#min_len;$jn++) {
2160: $space_neeeded+=$min_len[$jn];
2161: }
2162: if ($space_neeeded>$available_space) {
2163: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2164: for (my $jn=0;$jn<=$#max_len;$jn++) {
2165: if ($fwidth[$jn]==0) {
2166: $fwidth[$jn]=$min_len[$jn];
2167: }
2168: }
2169: #check if we have objects which can be scaled
2170: my $how_many_to_scale=0;
2171: my @to_scale=();
2172: for (my $jn=0;$jn<=$#max_len;$jn++) {
2173: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2174: $how_many_to_scale++;
2175: push @to_scale, $jn;
2176: }
2177: }
2178: if ($how_many_to_scale>0) {
2179: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2180: foreach my $jn (@to_scale) {
2181: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2182: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2183: if ($1 ne '') {
2184: my $current_length=&recalc($1);
2185: $current_length=~/(\d+\.?\d*)/;
2186: $current_length=$current_length-$space_to_adjust;
2187: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2188: }
2189: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2190: if ($1 ne '') {
2191: my $current_length=$1;
2192: $current_length=$current_length-$space_to_adjust;
2193: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2194: }
2195: }
2196: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2197: }
2198: }
2199: } else {
2200: #step 3. adjustment over minimal + corrections
2201: my $enlarge_coef=$available_space/$space_neeeded;
2202: my $acsessive=0;
2203: for (my $jn=0;$jn<=$#min_len;$jn++) {
2204: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2205: if ($adjust[$jn]>$max_len[$jn]) {
2206: $fwidth[$jn]=$max_len[$jn];
2207: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2208: $adjust[$jn]=0;
2209:
2210: }
2211: }
2212: if ($acsessive>0) {
2213: #we have an excess of space and can redistribute it
2214: my $notempty_columns=0;
2215: for (my $jn=0;$jn<=$#min_len;$jn++) {
2216: if ($adjust[$jn]!=0) {
2217: $notempty_columns++;
2218: }
2219: }
2220: my $per_column=$acsessive/$notempty_columns;
2221: for (my $jn=0;$jn<=$#min_len;$jn++) {
2222: if ($adjust[$jn]!=0) {
2223: $adjust[$jn]+=$per_column;
2224: $fwidth[$jn]=$adjust[$jn];
2225: }
2226: }
2227: } else {
2228: for (my $jn=0;$jn<=$#min_len;$jn++) {
2229: $fwidth[$jn]=$adjust[$jn];
2230: }
2231: }
2232: }
2233: }
2234: #use all available width if it is defined in % or as TeXwidth
2235: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2236: my $current=0;
2237: for (my $i=0;$i<=$#fwidth;$i++) {
2238: $current+=$fwidth[$i];
2239: }
2240: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2241: for (my $i=0;$i<=$#fwidth;$i++) {
2242: $fwidth[$i]*=$coef;
2243: }
2244: }
2245: #removing of empty columns if allowed
2246: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2247: if ($permission eq 'yes') {
2248: my @cleaned_table=();
2249: my @cleaned_header=();
2250: my $colind=0;
2251: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2252: if ($fwidth[$jn]!=0) {
2253: #we need to copy column
2254: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2255: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2256: $cleaned_header[$colind]=$fwidth[$jn];
2257: }
2258: $colind++;
2259: }
2260: }
2261: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2262: @fwidth=@cleaned_header;
2263: }
2264:
2265:
2266: #construct header of the table
2267: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2268: for (my $in=0;$in<=$#fwidth;$in++) {
2269: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2270: }
2271: $header_of_table .= '}';
2272:
2273: #fill the table
2274: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2275: my $have_rowspan = 0;
2276: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2277:
2278: #-----------------------------------------------------------
2279: # I think this order of doing things will ensure that
2280: # single rowspan, columspan and combined row/colspans will
2281: # work correctly. LaTeX is delicate here.
2282: # RF.
2283:
2284: # Start a rowspan if necessary:
2285:
2286: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2287: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2288: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2289: #
2290: # Do the appropriate magic if this has a colspan
2291: #
2292:
2293: my $spanwidth = 0;
2294: if ($colspan > 1) {
2295: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2296: $spanwidth += $fwidth[$spancol];
2297: }
2298: $output .= '\multicolumn{'.
2299: $colspan
2300: ."}";
2301: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2302: $output .= '{|c|}{';
2303: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2304: $output .= '{|r|}{';
2305: }
2306: else {
2307: $output .= "{|p{$spanwidth mm}|}{";
2308: }
2309:
2310: } else {
2311: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2312: }
2313:
2314: # Rowspan... if colspan is 1, and there's an alignment we'll need
2315: # to kick in a multicolumn in order to get the alignment spec.
2316: # this must precede the multirow or LaTex gets quite upset.
2317: # Naturally if colspan > 1 we've already done that above ^
2318: #
2319: my $multirow_aligned = 0;
2320: if ($rowspan > 1) {
2321: if ($colspan == 1) {
2322: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2323: $output .= '\multicolumn{1}{|c|}{';
2324: $multirow_aligned = 1;
2325: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2326: $output .= '\multicolumn{1}{|r|}{';
2327: $multirow_aligned = 1;
2328: }
2329: }
2330: $have_rowspan++;
2331: if ($multirow_aligned) {
2332: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2333: } else {
2334: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2335: }
2336:
2337: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2338: s{^\s*\\par\s*}{};
2339: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2340: s{\s*\\vskip\s*0pt\s*$}{};
2341:
2342: #
2343: # If we did not throw in a multicolumn to align, then add
2344: # an extra {
2345: # so we close correctly without having to keep additional state
2346: # around
2347: #
2348: if (!$multirow_aligned) {
2349: $output .= '{';
2350: }
2351: }
2352: if (($rowspan eq '^') || ($rowspan eq '_')) {
2353: $have_rowspan++;
2354: }
2355: #--------------------------------------------------------------
2356:
2357:
2358: # For right and center alignment of single cells.
2359: # we are going to use a multicolumn with a span of 1 to specify alignment.
2360: #
2361: if ($colspan == 1 && $rowspan == 1) {
2362: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2363: $output .= '\multicolumn{1}{|c|}{';
2364: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2365: $output .= '\multicolumn{1}{|r|}{';
2366: }
2367: }
2368:
2369: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2370:
2371: if (($colspan == 1 && $rowspan == 1) &&
2372: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2373: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2374: $output .= '}';
2375: }
2376:
2377: # Close off any open multirow:
2378:
2379: if ($rowspan > 1) {
2380: $output .= '}}';
2381: }
2382: # Close off the colspan...
2383: #
2384: if ($colspan > 1) {
2385: $output .= '}';
2386: $jn += $colspan-1; # Adjust for number of rows really left.
2387: }
2388: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2389: }
2390: # If have_rowspan > 0, and borders are on, then
2391: # we need to do more than put an \hline at the bottom of row.
2392: # we need to do the appropriate \cline to ensure that
2393: # the spanned rows don't have \hlines through them.
2394:
2395: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2396: $output .= ' \\\\ ';
2397: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2398: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2399: if ($rowspan ne "^") {
2400: if (($rowspan <= 1) || ($rowspan eq '_')) {
2401: my $column = $jn+1;
2402: $output .= '\cline{'.$column.'-'.$column.'} ';
2403: }
2404: }
2405: }
2406:
2407: } else {
2408: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2409: }
2410: }
2411: # Note that \newline destroys alignment env's produced by e.g. <div>
2412: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2413: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2414: if ($#Apache::londefdef::table > 0) {
2415: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2416: # Figure out max/and min width by summing us and then
2417: # apply that to the current column of the table we nest in
2418: # if it's larger than the current width or the current width
2419: # is undefined.
2420: #
2421: my $min_nested_width = 0;
2422: my $max_nested_width = 0;
2423: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2424: $min_nested_width += $min_len[$col];
2425: $max_nested_width += $max_len[$col];
2426:
2427: }
2428: # Fudge in an extra 5 mm for borders etc:
2429:
2430: $min_nested_width += 5;
2431: $max_nested_width += 5;
2432:
2433: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2434: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2435: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2436: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2437: }
2438: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2439: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2440: }
2441:
2442: pop @Apache::londefdef::table;
2443: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2444: } else {
2445: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2446: pop @Apache::londefdef::table;
2447: undef @Apache::londefdef::table;
2448: }
2449: }
2450: return $currentstring;
2451: }
2452:
2453: #-- <tr> tag (end tag optional)
2454: sub start_tr {
2455: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2456: my $currentstring = '';
2457: if ($target eq 'web' || $target eq 'webgrade') {
2458: $currentstring = $token->[4];
2459: } elsif ($target eq 'tex') {
2460: $Apache::londefdef::table[-1]{'row_number'}++;
2461: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2462: if ($alignchar ne '') {
2463: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2464: } else {
2465: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2466: }
2467: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2468: #
2469: # Need to save the number of table columns to preserve the max # columns.
2470: #
2471: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2472: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2473: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2474: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2475: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2476: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2477: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2478: }
2479: return $currentstring;
2480: }
2481:
2482: sub end_tr {
2483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2484: my $currentstring = &end_p(); # Close any pending <p> in the row.
2485: if ($target eq 'web' || $target eq 'webgrade') {
2486: $currentstring .= $token->[2];
2487: } elsif ($target eq 'tex') {
2488: if ($Apache::londefdef::TD_redirection) {
2489: &end_td_tex($parstack,$parser,$safeeval);
2490: }
2491: # Counter columns must be the maximum number of columns seen
2492: # in the table so far so:
2493: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2494: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2495: }
2496:
2497:
2498:
2499: }
2500: return $currentstring;
2501: }
2502:
2503: #-- <td> tag (end tag optional)
2504: sub start_td {
2505: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2506: my $currentstring = '';
2507: if ($target eq 'web' || $target eq 'webgrade') {
2508: $currentstring = $token->[4];
2509: } elsif ($target eq 'tex') {
2510: $Apache::londefdef::TD_redirection = 1;
2511: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2512: }
2513: return $currentstring;
2514: }
2515:
2516: sub tag_check {
2517: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2518: my @ar=@$parstack;
2519: for (my $i=$#ar-1;$i>=0;$i--) {
2520: if (lc($$tagstack[$i]) eq $good_tag) {
2521: &start_td_tex($parstack,$parser,$safeeval);
2522: last;
2523: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2524: splice @ar, $i+1;
2525: &end_td_tex(\@ar,$parser,$safeeval);
2526: &start_td_tex($parstack,$parser,$safeeval);
2527: last;
2528: }
2529: }
2530: return '';
2531: }
2532:
2533: sub start_td_tex {
2534: my ($parstack,$parser,$safeeval) = @_;
2535: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2536: if ($alignchar eq '') {
2537: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2538: }
2539: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2540: $Apache::londefdef::table[-1]{'counter_columns'}++;
2541: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2542: if (defined $TeXwidth) {
2543: my $current_length=&recalc($TeXwidth);
2544: $current_length=~/(\d+\.?\d*)/;
2545: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2546: }
2547: &Apache::lonxml::startredirection();
2548: return '';
2549: }
2550:
2551: sub end_td_tex {
2552: my ($parstack,$parser,$safeeval) = @_;
2553: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2554: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2555: my $data = &Apache::lonxml::endredirection();
2556:
2557: # The rowspan array of the table indicates which cells are part of a span.
2558: # n indicates the start of a span set of n rows.
2559: # ^ indicates a cell that continues a span set.
2560: # _ indicates the cell is at the bottom of a span set.
2561: # If this and subsequent cells are part of a rowspan, we must
2562: # push along the row until we find one that is not.
2563:
2564: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2565: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2566: # Part of a span.
2567: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2568: $current_column++;
2569: }
2570: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2571:
2572:
2573: # Get the column and row spans.
2574: # Colspan can be done via \multicolumn if I can figure out the data structs.
2575:
2576: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2577: if (!$colspan) {
2578: $colspan = 1;
2579: }
2580:
2581: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2582: if (!$rowspan) {
2583: $rowspan = 1;
2584: }
2585:
2586:
2587:
2588: for (my $c = 0; $c < $colspan; $c++) {
2589: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2590: for (my $i = 1; $i < $rowspan; $i++) {
2591: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2592: if ($i == ($rowspan-1)) {
2593: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2594: }
2595: }
2596: }
2597:
2598: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2599: if (defined $TeXwidth) {
2600: for (my $c = 0; $c < $colspan; $c++) {
2601: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2602: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2603: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2604: }
2605: } else {
2606: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2607: my $garbage_data=$data;
2608: my $fwidth=0;
2609: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2610: my $current_length=&recalc($1);
2611: $current_length=~/(\d+\.?\d*)/;
2612: if ($fwidth<$1) {$fwidth=$1;}
2613: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2614: }
2615: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2616: my $current_length=$1;
2617: if ($fwidth<$current_length) {$fwidth=$current_length;}
2618: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2619: }
2620: for (my $c = 0; $c < $colspan; $c++) {
2621: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2622: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2623: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2624: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2625: }
2626: } 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)*/) {
2627: my $garbage_data=$data;
2628: my $fwidth=0;
2629: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2630: my $current_length=&recalc($1);
2631: $current_length=~/(\d+\.?\d*)/;
2632: if ($fwidth<$1) {$fwidth=$1;}
2633: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2634: }
2635: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2636: my $current_length=&recalc($1);
2637: $current_length=~/(\d+\.?\d*)/;
2638: if ($fwidth<$1) {$fwidth=$1;}
2639: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2640: }
2641: for (my $c = 0; $c < $colspan; $c++) {
2642: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2643: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2644: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2645: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2646: }
2647: $data=~s/\\\\\s*$//;
2648: } else {
2649: $data=~s/^\s+(\S.*)/$1/;
2650: $data=~s/(.*\S)\s+$/$1/;
2651: $data=~s/(\s)+/$1/;
2652: my ($current_length,$min_length)=(0,0);
2653: if ($data=~/\\vskip/) {
2654: my $newdata=$data;
2655: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2656: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2657: foreach my $elementdata (@newdata) {
2658: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2659: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2660: my @words=split(/ /,$elementdata);
2661: foreach my $word (@words) {
2662: my $lengthword=2.5*&LATEX_length($word);
2663: if ($min_length<$lengthword) {$min_length=$lengthword;}
2664: }
2665: }
2666: } else {
2667: $current_length=2.5*&LATEX_length($data);
2668: my @words=split(/ /,$data);
2669: foreach my $word (@words) {
2670: my $lengthword=2*&LATEX_length($word);
2671: if ($min_length<$lengthword) {$min_length=$lengthword;}
2672: }
2673: }
2674: for (my $c = 0; $c < $colspan; $c++) {
2675: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2676: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2677: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2678: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2679: }
2680: }
2681: }
2682: # Substitute all of the tables nested in this cell in their appropriate places.
2683:
2684:
2685: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2686: for (my $in=0; $in<=$nested_count; $in++) {
2687: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2688: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2689: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2690: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2691:
2692: }
2693: # Should be be killing off the 'include' elements as they're used up?
2694:
2695: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2696:
2697:
2698:
2699:
2700: # the colspan array will indicate how many columns will be spanned by this
2701: # cell..this requires that counter_columns also be adjusted accordingly
2702: # so that the next bunch of text goes in the right cell. Note that since
2703: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2704: #
2705:
2706: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2707: for (my $i = 0; $i < ($colspan -1); $i++) {
2708: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2709: }
2710: for (my $r = 0; $r < $rowspan; $r++) {
2711: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2712: # Put empty text in spanned cols.
2713:
2714: }
2715:
2716:
2717:
2718: return '';
2719: }
2720:
2721: sub end_td {
2722: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2723: my $currentstring = '';
2724: if ($target eq 'web' || $target eq 'webgrade') {
2725: $currentstring = $token->[2];
2726: } elsif ($target eq 'tex') {
2727: $Apache::londefdef::TD_redirection =0;
2728: &end_td_tex($parstack,$parser,$safeeval);
2729: }
2730: return $currentstring;
2731: }
2732:
2733: #-- <th> tag (end tag optional)
2734: sub start_th {
2735: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2736: my $currentstring = '';
2737: if ($target eq 'web' || $target eq 'webgrade') {
2738: $currentstring = $token->[4];
2739: } elsif ($target eq 'tex') {
2740: $Apache::londefdef::TD_redirection = 1;
2741: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2742: }
2743: return $currentstring;
2744: }
2745:
2746: sub tagg_check {
2747: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2748: my @ar=@$parstack;
2749: for (my $i=$#ar-1;$i>=0;$i--) {
2750: if (lc($$tagstack[$i]) eq $good_tag) {
2751: &start_th_tex($parstack,$parser,$safeeval);
2752: last;
2753: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2754: splice @ar, $i+1;
2755: &end_th_tex(\@ar,$parser,$safeeval);
2756: &start_th_tex($parstack,$parser,$safeeval);
2757: last;
2758: }
2759: }
2760: return '';
2761: }
2762:
2763: sub start_th_tex {
2764: my ($parstack,$parser,$safeeval) = @_;
2765: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2766: if ($alignchar eq '') {
2767: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2768: }
2769: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2770: $Apache::londefdef::table[-1]{'counter_columns'}++;
2771: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2772: if (defined $TeXwidth) {
2773: my $current_length=&recalc($TeXwidth);
2774: $current_length=~/(\d+\.?\d*)/;
2775: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2776: }
2777: &Apache::lonxml::startredirection();
2778: return '';
2779: }
2780:
2781: sub end_th_tex {
2782: my ($parstack,$parser,$safeeval) = @_;
2783: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2784: my $data=&Apache::lonxml::endredirection();
2785: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2786: if (defined $TeXwidth) {
2787: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2788: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2789: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2790: } else {
2791: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2792: my $garbage_data=$data;
2793: my $fwidth=0;
2794: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2795: my $current_length=&recalc($1);
2796: $current_length=~/(\d+\.?\d*)/;
2797: if ($fwidth<$1) {$fwidth=$1;}
2798: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2799: }
2800: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2801: my $current_length=$1;
2802: if ($fwidth<$current_length) {$fwidth=$current_length;}
2803: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2804: }
2805: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2806: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2807: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2808: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2809: } else {
2810: $data=~s/^\s+(\S.*)/$1/;
2811: $data=~s/(.*\S)\s+$/$1/;
2812: $data=~s/(\s)+/$1/;
2813: my ($current_length,$min_length)=(0,0);
2814: if ($data=~/\\vskip/) {
2815: my $newdata=$data;
2816: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2817: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2818: foreach my $elementdata (@newdata) {
2819: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2820: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2821: my @words=split(/ /,$elementdata);
2822: foreach my $word (@words) {
2823: my $lengthword=2.5*&LATEX_length($word);
2824: if ($min_length<$lengthword) {$min_length=$lengthword;}
2825: }
2826: }
2827: } else {
2828: $current_length=2.5*&LATEX_length($data);
2829: my @words=split(/ /,$data);
2830: foreach my $word (@words) {
2831: my $lengthword=2*&LATEX_length($word);
2832: if ($min_length<$lengthword) {$min_length=$lengthword;}
2833: }
2834: }
2835: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2836: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2837: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2838: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2839: }
2840: }
2841: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2842: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2843: }
2844: #make data bold
2845: $data='\textbf{'.$data.'}';
2846: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2847: return'';
2848: }
2849:
2850: sub end_th {
2851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2852: my $currentstring = &end_p(); # Close any open <p> in the row.
2853: if ($target eq 'web' || $target eq 'webgrade') {
2854: $currentstring .= $token->[2];
2855: } elsif ($target eq 'tex') {
2856: $Apache::londefdef::TD_redirection =0;
2857: &end_th_tex($parstack,$parser,$safeeval);
2858: }
2859: return $currentstring;
2860: }
2861:
2862: #-- <img> tag (end tag forbidden)
2863: #
2864: # Render the <IMG> tag.
2865: # <IMG> has the following attributes (in addition to the
2866: # standard HTML ones:
2867: # TeXwrap - Governs how the tex target will try to wrap text around
2868: # horizontally aligned images.
2869: # TeXwidth - The width of the image when rendered for print (mm).
2870: # TeXheight - The height of the image when rendered for print (mm)
2871: # (Note there seems to also be support for this as a % of page size)
2872: #
2873: sub start_img {
2874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2875: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2876: undef,1);
2877: if (! $src &&
2878: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2879: ) {
2880: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2881: return '';
2882: }
2883: &Apache::lonxml::extlink($src);
2884: my $currentstring = '';
2885: my $scaling = .3;
2886:
2887: # Render unto browsers that which are the browser's...
2888:
2889: if ($target eq 'web' || $target eq 'webgrade') {
2890: if ($env{'browser.imagesuppress'} ne 'on') {
2891: my $enc = ('yes' eq
2892: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2893: $safeeval)));
2894: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2895: $enc);
2896: } else {
2897: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2898: undef,1);
2899: if (!$alttag) {
2900: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2901: $src);
2902: }
2903: $currentstring.='[IMAGE: '.$alttag.']';
2904: }
2905:
2906: # and render unto TeX that which is LaTeX
2907:
2908: } elsif ($target eq 'tex') {
2909: #
2910: # The alignment will require some superstructure to be put around
2911: # the \includegraphics stuff. At present we can only partially
2912: # simulate the alignments offered by html.
2913: #
2914: #
2915: my $align = lc(&Apache::lonxml::get_param('align',
2916: $parstack,
2917: $safeeval,
2918: undef,1));
2919: if(!$align) {
2920: $align = "bottom"; # This is html's default so it's ours too.
2921: }
2922: #
2923: &Apache::lonxml::debug("Alignemnt = $align");
2924: # LaTeX's image/text wrapping is really bad since it wants to
2925: # make figures float.
2926: # The user has the optional parameter (applicable only to l/r
2927: # alignment to use the picins/parpic directive to get wrapped text
2928: # this is also imperfect.. that's why we give them a choice...
2929: # so they can't yell at us for our choice.
2930: #
2931: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2932: $parstack,
2933: $safeeval,
2934: undef,0);
2935: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2936: if(!$latex_rendering) {
2937: $latex_rendering = "texwrap";
2938: }
2939: # using texwrap inside a table does not work. So, if after all of this,
2940: # texwrap is on, we turn it off if we detect we're in a table:
2941: #
2942: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2943: $latex_rendering = 'parpic';
2944: }
2945:
2946: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2947:
2948: #if original gif/jpg/png file exist do following:
2949: my $origsrc=$src;
2950: my ($path,$file) = &get_eps_image($src);
2951: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2952: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2953: &Apache::lonxml::debug("path = $path file = $file src = $src");
2954: if (-e $src) {
2955: &Apache::lonxml::debug("$src exists");
2956: my ($height_param,$width_param)=
2957: &image_size($origsrc,0.3,$parstack,$safeeval);
2958: my $size;
2959: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2960: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2961: # Default size if not able to extract that (e.g. eps image).
2962:
2963: # &Apache::lonnet::logthis("Size = $size");
2964:
2965: $size='['.$size;
2966: $size=~s/,$/]/;
2967: $currentstring .= '\graphicspath{{'.$path.'}}'
2968: .'\includegraphics'.$size.'{'.$file.'} ';
2969: my $closure;
2970: ($currentstring, $closure) = &align_latex_image($align,
2971: $latex_rendering,
2972: $currentstring,
2973: $width_param,
2974: $height_param);
2975: $currentstring .= $closure;
2976:
2977: } else {
2978: &Apache::lonxml::debug("$src does not exist");
2979: #original image file doesn't exist so check the alt attribute
2980: my $alt =
2981: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2982: unless ($alt) {
2983: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2984: }
2985:
2986: if ($alt) { $currentstring .= ' '.$alt.' '; }
2987: }
2988:
2989: # And here's where the semi-quote breaks down: allow the user
2990: # to edit the beast as well by rendering the problem for edit:
2991: } elsif ($target eq 'edit') {
2992: $currentstring .=&Apache::edit::tag_start($target,$token);
2993: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2994: &Apache::edit::browse('src',undef,'alt').' '.
2995: &Apache::edit::search('src',undef,'alt').'<br />';
2996: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2997: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2998: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2999: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3000: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3001: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3002: ['','bottom','middle','top','left','right'],$token,5);
3003: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3004: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3005: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3006: ['no','yes'], $token, 2);
3007: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3008: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3009: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3010: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3011: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3012:
3013:
3014: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3015: if ($width) { $currentstring.=' width="'.$width.'" '; }
3016: if ($height) { $currentstring.=' height="'.$height.'" '; }
3017: $currentstring .= ' />';
3018: } elsif ($target eq 'modified') {
3019: my ($osrc,$owidth,$oheight)=
3020: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3021: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3022: $safeeval,'src','alt','align',
3023: 'TeXwidth','TeXheight', 'TeXwrap',
3024: 'width','height','encrypturl');
3025: my ($nsrc,$nwidth,$nheight)=
3026: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3027: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3028: &image_replication($loc);
3029: my ($iwidth,$iheight);
3030: if (-e $loc) {
3031: my $image = Image::Magick->new;
3032: $image->Read($loc);
3033: ($iwidth, $iheight) = ($image->Get('width'),
3034: $image->Get('height'));
3035: }
3036: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3037: # changed image or no size specified,
3038: # if they didn't explicitly change the
3039: # width or height use the ones from the image
3040: if ($iwidth && $iheight) {
3041: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3042: $token->[2]{'width'} = $iwidth;$ctag=1;
3043: }
3044: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3045: $token->[2]{'height'}=$iheight;$ctag=1;
3046: }
3047: }
3048: }
3049: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3050: # if we don't have a width or height
3051: if ($iwidth && $cwidth && !$cheight) {
3052: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3053: }
3054: if ($iheight && $cheight && !$cwidth) {
3055: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3056: }
3057: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3058: }
3059:
3060: return $currentstring;
3061: }
3062:
3063: sub end_img {
3064: my ($target,$token) = @_;
3065: my $currentstring = '';
3066: if ($target eq 'web' || $target eq 'webgrade') {
3067: $currentstring = $token->[2];
3068: } elsif ($target eq 'tex') {
3069: $currentstring = '';
3070: }
3071: return $currentstring;
3072: }
3073:
3074: #-- <applet> tag (end tag required)
3075: sub start_applet {
3076: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3077:
3078: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3079: &Apache::lonxml::extlink($code);
3080: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3081: undef,1);
3082: &Apache::lonxml::extlink($archive);
3083: my $currentstring = '';
3084: if ($target eq 'web' || $target eq 'webgrade') {
3085: if ($env{'browser.appletsuppress'} ne 'on') {
3086: $currentstring = &Apache::lonenc::encrypt_ref($token,
3087: {'code'=>$code,
3088: 'archive'=>$archive}
3089: );
3090: } else {
3091: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3092: $safeeval,undef,1);
3093: unless ($alttag) {
3094: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3095: $code);
3096: }
3097: $currentstring='[APPLET: '.$alttag.']';
3098: }
3099: } elsif ($target eq 'tex') {
3100: # Turn off some stuff we can't be inside thank you LaTeX
3101:
3102:
3103: my $restart_sub = 0;
3104: my $restart_sup = 0;
3105:
3106: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3107: # using the start_ stop_ functions.. those tags only care about
3108: # $target.
3109:
3110: if (&is_inside_of($tagstack, "sub")) {
3111: $restart_sub = 1;
3112: $currentstring .= &end_sub($target, $token, $tagstack,
3113: $parstack, $parser, $safeeval);
3114: }
3115: if (&is_inside_of($tagstack, "sup")) {
3116: $restart_sup = 1;
3117: $currentstring .= &end_sup($target, $token, $tagstack,
3118: $parstack, $parser, $safeeval);
3119: }
3120:
3121: # Now process the applet; just replace it with its alt attribute.
3122:
3123: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3124: $safeeval,undef,1);
3125: unless ($alttag) {
3126: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3127: undef,1);
3128: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3129: $code);
3130: }
3131: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3132: '.}\end{center}';
3133:
3134: # Turn stuff back on that we can't be inside of.
3135:
3136: if ($restart_sub) {
3137: $currentstring .= &start_sub($target, $token, $tagstack,
3138: $parstack, $parser, $safeeval);
3139: }
3140: if ($restart_sup) {
3141: $currentstring .= &start_sup($target, $token, $tagstack,
3142: $parstack, $parser, $safeeval);
3143: }
3144: }
3145: return $currentstring;
3146: }
3147:
3148: sub end_applet {
3149: my ($target,$token) = @_;
3150: my $currentstring = '';
3151: if ($target eq 'web' || $target eq 'webgrade') {
3152: $currentstring = $token->[2];
3153: } elsif ($target eq 'tex') {
3154: }
3155: return $currentstring;
3156: }
3157:
3158: #-- <embed> tag (end tag optional/required)
3159: sub start_embed {
3160: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3161: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3162: &Apache::lonxml::extlink($src);
3163: my $currentstring = '';
3164: if ($target eq 'web' || $target eq 'webgrade') {
3165: if ($env{'browser.embedsuppress'} ne 'on') {
3166: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3167: } else {
3168: my $alttag=&Apache::lonxml::get_param
3169: ('alt',$parstack,$safeeval,undef,1);
3170: unless ($alttag) {
3171: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3172: }
3173: $currentstring='[EMBED: '.$alttag.']';
3174: }
3175: } elsif ($target eq 'tex') {
3176: }
3177: return $currentstring;
3178: }
3179:
3180: sub end_embed {
3181: my ($target,$token) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web' || $target eq 'webgrade') {
3184: $currentstring = $token->[2];
3185: } elsif ($target eq 'tex') {
3186: }
3187: return $currentstring;
3188: }
3189:
3190: #-- <param> tag (end tag forbidden)
3191: sub start_param {
3192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3193: if (&Apache::lonxml::get_param('name',$parstack,
3194: $safeeval,undef,1)=~/^cabbase$/i) {
3195: my $value=&Apache::lonxml::get_param('value',$parstack,
3196: $safeeval,undef,1);
3197: &Apache::lonxml::extlink($value);
3198: }
3199:
3200: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3201: &Apache::lonxml::extlink($src);
3202: my $currentstring = '';
3203: if ($target eq 'web' || $target eq 'webgrade') {
3204: my %toconvert;
3205: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3206: if ($src) { $toconvert{'src'}= $src; }
3207: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3208: undef,1);
3209: if ($name=~/^cabbase$/i) {
3210: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3211: $safeeval,undef,1);
3212: }
3213: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3214: } elsif ($target eq 'tex') {
3215: }
3216: return $currentstring;
3217: }
3218:
3219: sub end_param {
3220: my ($target,$token) = @_;
3221: my $currentstring = '';
3222: if ($target eq 'web' || $target eq 'webgrade') {
3223: $currentstring = $token->[2];
3224: } elsif ($target eq 'tex') {
3225: }
3226: return $currentstring;
3227: }
3228:
3229: #-- <allow> tag
3230: sub start_allow {
3231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3232: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3233: &Apache::lonxml::extlink($src);
3234:
3235: if ($target eq 'tex') { &image_replication($src); }
3236: my $result;
3237: if ($target eq 'edit') {
3238: $result .=&Apache::edit::tag_start($target,$token);
3239: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3240: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3241: } elsif ($target eq 'modified') {
3242: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3243: $safeeval,'src');
3244: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3245: }
3246: return $result;
3247: }
3248:
3249: sub end_allow {
3250: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3251: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3252: return '';
3253: }
3254:
3255: #-- Frames (end tag required)
3256: #-- <frameset>
3257: sub start_frameset {
3258: my ($target,$token) = @_;
3259: my $currentstring = ''; # Close any pending para.
3260: if ($target eq 'web' || $target eq 'webgrade') {
3261: $currentstring =
3262: &Apache::loncommon::start_page($Apache::londefdef::title,
3263: $Apache::londefdef::head,
3264: {'add_entries' => $token->[2],
3265: 'no_title' => 1,
3266: 'force_register' => 1,
3267: 'frameset' => 1,});
3268:
3269: }
3270: return $currentstring;
3271: }
3272:
3273: sub end_frameset {
3274: my ($target,$token) = @_;
3275: my $currentstring = '';
3276: if ($target eq 'web' || $target eq 'webgrade') {
3277: $currentstring = $token->[2];
3278: }
3279: return $currentstring;
3280: }
3281:
3282: #-- <xmp> (end tag required)
3283: sub start_xmp {
3284: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3285: my $currentstring = '';
3286: if ($target eq 'web' || $target eq 'webgrade') {
3287: $currentstring .= $token->[4];
3288: } elsif ($target eq 'tex') {
3289: $currentstring .= '\begin{verbatim}';
3290: }
3291: return $currentstring;
3292: }
3293:
3294: sub end_xmp {
3295: my ($target,$token) = @_;
3296: my $currentstring = '';
3297: if ($target eq 'web' || $target eq 'webgrade') {
3298: $currentstring .= $token->[2];
3299: } elsif ($target eq 'tex') {
3300: $currentstring .= '\end{verbatim}';
3301: }
3302: return $currentstring;
3303: }
3304:
3305: #-- <pre> (end tag required)
3306: sub start_pre {
3307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3308: my $currentstring = &end_p(); # close off pending <p>
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring .= $token->[4];
3311: } elsif ($target eq 'tex') {
3312: $currentstring .= '\begin{verbatim}';
3313: &Apache::lonxml::disable_LaTeX_substitutions();
3314: }
3315: return $currentstring;
3316: }
3317:
3318: sub end_pre {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web' || $target eq 'webgrade') {
3322: $currentstring .= $token->[2];
3323: } elsif ($target eq 'tex') {
3324: $currentstring .= '\end{verbatim}';
3325: &Apache::lonxml::enable_LaTeX_substitutions();
3326: }
3327: return $currentstring;
3328: }
3329:
3330: #-- <insert>
3331: sub start_insert {
3332: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3333: my $currentstring = '';
3334: if ($target eq 'web' || $target eq 'webgrade') {
3335: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3336: $currentstring .= '<b>'.$display.'</b>';;
3337: }
3338: return $currentstring;
3339: }
3340:
3341: sub end_insert {
3342: my ($target,$token) = @_;
3343: my $currentstring = '';
3344: if ($target eq 'web' || $target eq 'webgrade') {
3345: $currentstring .= '';
3346: }
3347: return $currentstring;
3348: }
3349:
3350: #-- <externallink>
3351: sub start_externallink {
3352: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3353: my $currentstring = '';
3354: if ($target eq 'web' || $target eq 'webgrade') {
3355: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3356: $currentstring .= '<b>'.$display.'</b>';;
3357: }
3358: return $currentstring;
3359: }
3360:
3361: sub end_externallink {
3362: my ($target,$token) = @_;
3363: my $currentstring = '';
3364: if ($target eq 'web' || $target eq 'webgrade') {
3365: $currentstring .= '';
3366: }
3367: return $currentstring;
3368: }
3369:
3370: #-- <blankspace heigth="">
3371: sub start_blankspace {
3372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3373: my $currentstring = &end_p(); # closes off any unclosed <p>
3374: if ($target eq 'tex') {
3375: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3376: $currentstring .= '\vskip '.$howmuch.' ';
3377: }
3378: return $currentstring;
3379: }
3380:
3381: sub end_blankspace {
3382: my ($target,$token) = @_;
3383: my $currentstring = '';
3384: if ($target eq 'tex') {
3385: $currentstring .= '';
3386: }
3387: return $currentstring;
3388: }
3389:
3390: #-- <abbr> tag (end tag required)
3391: sub start_abbr {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: $currentstring = $token->[4];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: sub end_abbr {
3401: my ($target,$token) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web' || $target eq 'webgrade') {
3404: $currentstring = $token->[2];
3405: }
3406: return $currentstring;
3407: }
3408:
3409: #-- <acronym> tag (end tag required)
3410: sub start_acronym {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring = $token->[4];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: sub end_acronym {
3420: my ($target,$token) = @_;
3421: my $currentstring = '';
3422: if ($target eq 'web' || $target eq 'webgrade') {
3423: $currentstring = $token->[2];
3424: }
3425: return $currentstring;
3426: }
3427:
3428: #-- <area> tag (end tag forbidden)
3429: sub start_area {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web' || $target eq 'webgrade') {
3433: $currentstring = $token->[4];
3434: }
3435: return $currentstring;
3436: }
3437:
3438: sub end_area {
3439: my ($target,$token) = @_;
3440: my $currentstring = '';
3441: if ($target eq 'web' || $target eq 'webgrade') {
3442: $currentstring = $token->[2];
3443: }
3444: return $currentstring;
3445: }
3446:
3447: #-- <base> tag (end tag forbidden)
3448: sub start_base {
3449: my ($target,$token) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web' || $target eq 'webgrade') {
3452: $currentstring = $token->[4];
3453: }
3454: return $currentstring;
3455: }
3456:
3457: sub end_base {
3458: my ($target,$token) = @_;
3459: my $currentstring = '';
3460: if ($target eq 'web' || $target eq 'webgrade') {
3461: $currentstring = $token->[2];
3462: }
3463: return $currentstring;
3464: }
3465:
3466: #-- <bdo> tag (end tag required)
3467: sub start_bdo {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web' || $target eq 'webgrade') {
3471: $currentstring = $token->[4];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: sub end_bdo {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web' || $target eq 'webgrade') {
3480: $currentstring = $token->[2];
3481: }
3482: return $currentstring;
3483: }
3484:
3485: #-- <bgsound> tag (end tag optional)
3486: sub start_bgsound {
3487: my ($target,$token) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web' || $target eq 'webgrade') {
3490: $currentstring = $token->[4];
3491: }
3492: return $currentstring;
3493: }
3494:
3495: sub end_bgsound {
3496: my ($target,$token) = @_;
3497: my $currentstring = '';
3498: if ($target eq 'web' || $target eq 'webgrade') {
3499: $currentstring = $token->[2];
3500: }
3501: return $currentstring;
3502: }
3503:
3504: #-- <blink> tag (end tag required)
3505: sub start_blink {
3506: my ($target,$token) = @_;
3507: my $currentstring = '';
3508: if ($target eq 'web' || $target eq 'webgrade') {
3509: $currentstring = $token->[4];
3510: }
3511: return $currentstring;
3512: }
3513:
3514: sub end_blink {
3515: my ($target,$token) = @_;
3516: my $currentstring = '';
3517: if ($target eq 'web' || $target eq 'webgrade') {
3518: $currentstring = $token->[2];
3519: }
3520: return $currentstring;
3521: }
3522:
3523: #-- <blockquote> tag (end tag required)
3524: sub start_blockquote {
3525: my ($target,$token) = @_;
3526: my $currentstring = &end_p(); # Close any unclosed <p>
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring .= $token->[4];
3529: }
3530: if ($target eq 'tex') {
3531: $currentstring .= '\begin{quote}';
3532: }
3533: return $currentstring;
3534: }
3535:
3536: sub end_blockquote {
3537: my ($target,$token) = @_;
3538: my $currentstring = '';
3539: if ($target eq 'web' || $target eq 'webgrade') {
3540: $currentstring = $token->[2];
3541: }
3542: if ($target eq 'tex') {
3543: $currentstring = '\end{quote}';
3544: }
3545: return $currentstring;
3546: }
3547:
3548: #-- <button> tag (end tag required)
3549: sub start_button {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web' || $target eq 'webgrade') {
3553: $currentstring = $token->[4];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: sub end_button {
3559: my ($target,$token) = @_;
3560: my $currentstring = '';
3561: if ($target eq 'web' || $target eq 'webgrade') {
3562: $currentstring = $token->[2];
3563: }
3564: return $currentstring;
3565: }
3566:
3567: #-- <caption> tag (end tag required)
3568: sub start_caption {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web' || $target eq 'webgrade') {
3572: $currentstring = $token->[4];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: sub end_caption {
3578: my ($target,$token) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: $currentstring = $token->[2];
3582: }
3583: return $currentstring;
3584: }
3585:
3586: #-- <col> tag (end tag forbdden)
3587: sub start_col {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring = $token->[4];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: sub end_col {
3597: my ($target,$token) = @_;
3598: my $currentstring = '';
3599: if ($target eq 'web' || $target eq 'webgrade') {
3600: $currentstring = $token->[2];
3601: }
3602: return $currentstring;
3603: }
3604:
3605: #-- <colgroup> tag (end tag optional)
3606: sub start_colgroup {
3607: my ($target,$token) = @_;
3608: my $currentstring = '';
3609: if ($target eq 'web' || $target eq 'webgrade') {
3610: $currentstring = $token->[4];
3611: }
3612: return $currentstring;
3613: }
3614:
3615: sub end_colgroup {
3616: my ($target,$token) = @_;
3617: my $currentstring = '';
3618: if ($target eq 'web' || $target eq 'webgrade') {
3619: $currentstring = $token->[2];
3620: }
3621: return $currentstring;
3622: }
3623:
3624: #-- <del> tag (end tag required)
3625: sub start_del {
3626: my ($target,$token) = @_;
3627: my $currentstring = '';
3628: if ($target eq 'web' || $target eq 'webgrade') {
3629: $currentstring = $token->[4];
3630: }
3631: return $currentstring;
3632: }
3633:
3634: sub end_del {
3635: my ($target,$token) = @_;
3636: my $currentstring = '';
3637: if ($target eq 'web' || $target eq 'webgrade') {
3638: $currentstring = $token->[2];
3639: }
3640: return $currentstring;
3641: }
3642:
3643: #-- <fieldset> tag (end tag required)
3644: sub start_fieldset {
3645: my ($target,$token) = @_;
3646: my $currentstring = '';
3647: if ($target eq 'web' || $target eq 'webgrade') {
3648: $currentstring = $token->[4];
3649: }
3650: return $currentstring;
3651: }
3652:
3653: sub end_fieldset {
3654: my ($target,$token) = @_;
3655: my $currentstring = '';
3656: if ($target eq 'web' || $target eq 'webgrade') {
3657: $currentstring = $token->[2];
3658: }
3659: return $currentstring;
3660: }
3661:
3662: #-- <frame> tag (end tag forbidden)
3663: sub start_frame {
3664: my ($target,$token) = @_;
3665: my $currentstring = '';
3666: if ($target eq 'web' || $target eq 'webgrade') {
3667: $currentstring = $token->[4];
3668: }
3669: return $currentstring;
3670: }
3671:
3672: sub end_frame {
3673: my ($target,$token) = @_;
3674: my $currentstring = '';
3675: if ($target eq 'web' || $target eq 'webgrade') {
3676: $currentstring = $token->[2];
3677: }
3678: return $currentstring;
3679: }
3680:
3681: #-- <iframe> tag (end tag required)
3682: sub start_iframe {
3683: my ($target,$token) = @_;
3684: my $currentstring = '';
3685: if ($target eq 'web' || $target eq 'webgrade') {
3686: $currentstring = $token->[4];
3687: }
3688: return $currentstring;
3689: }
3690:
3691: sub end_iframe {
3692: my ($target,$token) = @_;
3693: my $currentstring = '';
3694: if ($target eq 'web' || $target eq 'webgrade') {
3695: $currentstring = $token->[2];
3696: }
3697: return $currentstring;
3698: }
3699:
3700: #-- <ins> tag (end tag required)
3701: sub start_ins {
3702: my ($target,$token) = @_;
3703: my $currentstring = '';
3704: if ($target eq 'web' || $target eq 'webgrade') {
3705: $currentstring = $token->[4];
3706: }
3707: return $currentstring;
3708: }
3709:
3710: sub end_ins {
3711: my ($target,$token) = @_;
3712: my $currentstring = '';
3713: if ($target eq 'web' || $target eq 'webgrade') {
3714: $currentstring = $token->[2];
3715: }
3716: return $currentstring;
3717: }
3718:
3719: #-- <isindex> tag (end tag forbidden)
3720: sub start_isindex {
3721: my ($target,$token) = @_;
3722: my $currentstring = '';
3723: if ($target eq 'web' || $target eq 'webgrade') {
3724: $currentstring = $token->[4];
3725: }
3726: return $currentstring;
3727: }
3728:
3729: sub end_isindex {
3730: my ($target,$token) = @_;
3731: my $currentstring = '';
3732: if ($target eq 'web' || $target eq 'webgrade') {
3733: $currentstring = $token->[2];
3734: }
3735: return $currentstring;
3736: }
3737:
3738: #-- <keygen> tag (end tag forbidden)
3739: sub start_keygen {
3740: my ($target,$token) = @_;
3741: my $currentstring = '';
3742: if ($target eq 'web' || $target eq 'webgrade') {
3743: $currentstring = $token->[4];
3744: }
3745: return $currentstring;
3746: }
3747:
3748: sub end_keygen {
3749: my ($target,$token) = @_;
3750: my $currentstring = '';
3751: if ($target eq 'web' || $target eq 'webgrade') {
3752: $currentstring = $token->[2];
3753: }
3754: return $currentstring;
3755: }
3756:
3757: #-- <label> tag
3758: sub start_label {
3759: my ($target,$token) = @_;
3760: my $currentstring = '';
3761: if ($target eq 'web' || $target eq 'webgrade') {
3762: $currentstring = $token->[4];
3763: }
3764: return $currentstring;
3765: }
3766:
3767: sub end_label {
3768: my ($target,$token) = @_;
3769: my $currentstring = '';
3770: if ($target eq 'web' || $target eq 'webgrade') {
3771: $currentstring = $token->[2];
3772: }
3773: return $currentstring;
3774: }
3775:
3776: #-- <layer> tag (end tag required)
3777: sub start_layer {
3778: my ($target,$token) = @_;
3779: my $currentstring = '';
3780: if ($target eq 'web' || $target eq 'webgrade') {
3781: $currentstring = $token->[4];
3782: }
3783: return $currentstring;
3784: }
3785:
3786: sub end_layer {
3787: my ($target,$token) = @_;
3788: my $currentstring = '';
3789: if ($target eq 'web' || $target eq 'webgrade') {
3790: $currentstring = $token->[2];
3791: }
3792: return $currentstring;
3793: }
3794:
3795: #-- <legend> tag (end tag required)
3796: sub start_legend {
3797: my ($target,$token) = @_;
3798: my $currentstring = '';
3799: if ($target eq 'web' || $target eq 'webgrade') {
3800: $currentstring = $token->[4];
3801: }
3802: return $currentstring;
3803: }
3804:
3805: sub end_legend {
3806: my ($target,$token) = @_;
3807: my $currentstring = '';
3808: if ($target eq 'web' || $target eq 'webgrade') {
3809: $currentstring = $token->[2];
3810: }
3811: return $currentstring;
3812: }
3813:
3814: #-- <link> tag (end tag forbidden)
3815: sub start_link {
3816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3817: my $currentstring = '';
3818: if ($target eq 'web' || $target eq 'webgrade') {
3819: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3820: undef,1);
3821: &Apache::lonxml::extlink($href);
3822: $currentstring = $token->[4];
3823: }
3824: return $currentstring;
3825: }
3826:
3827: sub end_link {
3828: my ($target,$token) = @_;
3829: my $currentstring = '';
3830: if ($target eq 'web' || $target eq 'webgrade') {
3831: $currentstring = $token->[2];
3832: }
3833: return $currentstring;
3834: }
3835:
3836: #-- <marquee> tag (end tag optional)
3837: sub start_marquee {
3838: my ($target,$token) = @_;
3839: my $currentstring = '';
3840: if ($target eq 'web' || $target eq 'webgrade') {
3841: $currentstring = $token->[4];
3842: }
3843: return $currentstring;
3844: }
3845:
3846: sub end_marquee {
3847: my ($target,$token) = @_;
3848: my $currentstring = '';
3849: if ($target eq 'web' || $target eq 'webgrade') {
3850: $currentstring = $token->[2];
3851: }
3852: return $currentstring;
3853: }
3854:
3855: #-- <multicol> tag (end tag required)
3856: sub start_multicol {
3857: my ($target,$token) = @_;
3858: my $currentstring = &end_p(); # Close any pending <p>
3859: if ($target eq 'web' || $target eq 'webgrade') {
3860: $currentstring .= $token->[4];
3861: }
3862: return $currentstring;
3863: }
3864:
3865: sub end_multicol {
3866: my ($target,$token) = @_;
3867: my $currentstring = '';
3868: if ($target eq 'web' || $target eq 'webgrade') {
3869: $currentstring = $token->[2];
3870: }
3871: return $currentstring;
3872: }
3873:
3874: #-- <nobr> tag (end tag required)
3875: sub start_nobr {
3876: my ($target,$token) = @_;
3877: my $currentstring = '';
3878: if ($target eq 'web' || $target eq 'webgrade') {
3879: $currentstring = $token->[4];
3880: } elsif ($target eq 'tex') {
3881: $currentstring='\mbox{';
3882: }
3883: return $currentstring;
3884: }
3885:
3886: sub end_nobr {
3887: my ($target,$token) = @_;
3888: my $currentstring = '';
3889: if ($target eq 'web' || $target eq 'webgrade') {
3890: $currentstring = $token->[2];
3891: } elsif ($target eq 'tex') {
3892: $currentstring='}';
3893: }
3894: return $currentstring;
3895: }
3896:
3897: #-- <noembed> tag (end tag required)
3898: sub start_noembed {
3899: my ($target,$token) = @_;
3900: my $currentstring = '';
3901: if ($target eq 'web' || $target eq 'webgrade') {
3902: $currentstring = $token->[4];
3903: }
3904: return $currentstring;
3905: }
3906:
3907: sub end_noembed {
3908: my ($target,$token) = @_;
3909: my $currentstring = '';
3910: if ($target eq 'web' || $target eq 'webgrade') {
3911: $currentstring = $token->[2];
3912: }
3913: return $currentstring;
3914: }
3915:
3916: #-- <noframes> tag (end tag required)
3917: sub start_noframes {
3918: my ($target,$token) = @_;
3919: my $currentstring = '';
3920: if ($target eq 'web' || $target eq 'webgrade') {
3921: $currentstring = $token->[4];
3922: }
3923: return $currentstring;
3924: }
3925:
3926: sub end_noframes {
3927: my ($target,$token) = @_;
3928: my $currentstring = '';
3929: if ($target eq 'web' || $target eq 'webgrade') {
3930: $currentstring = $token->[2];
3931: }
3932: return $currentstring;
3933: }
3934:
3935: #-- <nolayer> tag (end tag required)
3936: sub start_nolayer {
3937: my ($target,$token) = @_;
3938: my $currentstring = '';
3939: if ($target eq 'web' || $target eq 'webgrade') {
3940: $currentstring = $token->[4];
3941: }
3942: return $currentstring;
3943: }
3944:
3945: sub end_nolayer {
3946: my ($target,$token) = @_;
3947: my $currentstring = '';
3948: if ($target eq 'web' || $target eq 'webgrade') {
3949: $currentstring = $token->[2];
3950: }
3951: return $currentstring;
3952: }
3953:
3954: #-- <noscript> tag (end tag required)
3955: sub start_noscript {
3956: my ($target,$token) = @_;
3957: my $currentstring = '';
3958: if ($target eq 'web' || $target eq 'webgrade') {
3959: $currentstring = $token->[4];
3960: }
3961: return $currentstring;
3962: }
3963:
3964: sub end_noscript {
3965: my ($target,$token) = @_;
3966: my $currentstring = '';
3967: if ($target eq 'web' || $target eq 'webgrade') {
3968: $currentstring = $token->[2];
3969: }
3970: return $currentstring;
3971: }
3972:
3973: #-- <object> tag (end tag required)
3974: sub start_object {
3975: my ($target,$token) = @_;
3976: my $currentstring = '';
3977: if ($target eq 'web' || $target eq 'webgrade') {
3978: $currentstring = $token->[4];
3979: }
3980: return $currentstring;
3981: }
3982:
3983: sub end_object {
3984: my ($target,$token) = @_;
3985: my $currentstring = '';
3986: if ($target eq 'web' || $target eq 'webgrade') {
3987: $currentstring = $token->[2];
3988: }
3989: return $currentstring;
3990: }
3991:
3992: #-- <optgroup> tag (end tag required)
3993: sub start_optgroup {
3994: my ($target,$token) = @_;
3995: my $currentstring = '';
3996: if ($target eq 'web' || $target eq 'webgrade') {
3997: $currentstring = $token->[4];
3998: }
3999: return $currentstring;
4000: }
4001:
4002: sub end_optgroup {
4003: my ($target,$token) = @_;
4004: my $currentstring = '';
4005: if ($target eq 'web' || $target eq 'webgrade') {
4006: $currentstring = $token->[2];
4007: }
4008: return $currentstring;
4009: }
4010:
4011: #-- <samp> tag (end tag required)
4012: sub start_samp {
4013: my ($target,$token) = @_;
4014: my $currentstring = '';
4015: if ($target eq 'web' || $target eq 'webgrade') {
4016: $currentstring = $token->[4];
4017: } elsif ($target eq 'tex') {
4018: $currentstring='\texttt{';
4019: }
4020: return $currentstring;
4021: }
4022:
4023: sub end_samp {
4024: my ($target,$token) = @_;
4025: my $currentstring = '';
4026: if ($target eq 'web' || $target eq 'webgrade') {
4027: $currentstring = $token->[2];
4028: } elsif ($target eq 'tex') {
4029: $currentstring='}';
4030: }
4031: return $currentstring;
4032: }
4033:
4034: #-- <server> tag
4035: sub start_server {
4036: my ($target,$token) = @_;
4037: my $currentstring = '';
4038: if ($target eq 'web' || $target eq 'webgrade') {
4039: $currentstring = $token->[4];
4040: }
4041: return $currentstring;
4042: }
4043:
4044: sub end_server {
4045: my ($target,$token) = @_;
4046: my $currentstring = '';
4047: if ($target eq 'web' || $target eq 'webgrade') {
4048: $currentstring = $token->[2];
4049: }
4050: return $currentstring;
4051: }
4052:
4053: #-- <spacer> tag (end tag forbidden)
4054: sub start_spacer {
4055: my ($target,$token) = @_;
4056: my $currentstring = &end_p(); # Close off any open <p> tag.
4057: if ($target eq 'web' || $target eq 'webgrade') {
4058: $currentstring .= $token->[4];
4059: }
4060: return $currentstring;
4061: }
4062:
4063: sub end_spacer {
4064: my ($target,$token) = @_;
4065: my $currentstring = '';
4066: if ($target eq 'web' || $target eq 'webgrade') {
4067: $currentstring = $token->[2];
4068: }
4069: return $currentstring;
4070: }
4071:
4072: #-- <span> tag (end tag required)
4073: sub start_span {
4074: my ($target,$token) = @_;
4075: my $currentstring = '';
4076: if ($target eq 'web' || $target eq 'webgrade') {
4077: $currentstring = $token->[4];
4078: }
4079: return $currentstring;
4080: }
4081:
4082: sub end_span {
4083: my ($target,$token) = @_;
4084: my $currentstring = '';
4085: if ($target eq 'web' || $target eq 'webgrade') {
4086: $currentstring = $token->[2];
4087: }
4088: return $currentstring;
4089: }
4090:
4091: #-- <tbody> tag (end tag optional)
4092: sub start_tbody {
4093: my ($target,$token) = @_;
4094: my $currentstring = '';
4095: if ($target eq 'web' || $target eq 'webgrade') {
4096: $currentstring = $token->[4];
4097: }
4098: return $currentstring;
4099: }
4100:
4101: sub end_tbody {
4102: my ($target,$token) = @_;
4103: my $currentstring = '';
4104: if ($target eq 'web' || $target eq 'webgrade') {
4105: $currentstring = $token->[2];
4106: }
4107: return $currentstring;
4108: }
4109:
4110: #-- <tfoot> tag (end tag optional)
4111: sub start_tfoot {
4112: my ($target,$token) = @_;
4113: my $currentstring = '';
4114: if ($target eq 'web' || $target eq 'webgrade') {
4115: $currentstring = $token->[4];
4116: }
4117: return $currentstring;
4118: }
4119:
4120: sub end_tfoot {
4121: my ($target,$token) = @_;
4122: my $currentstring = '';
4123: if ($target eq 'web' || $target eq 'webgrade') {
4124: $currentstring = $token->[2];
4125: }
4126: return $currentstring;
4127: }
4128:
4129: #-- <thead> tag (end tag optional)
4130: sub start_thead {
4131: my ($target,$token) = @_;
4132: my $currentstring = '';
4133: if ($target eq 'web' || $target eq 'webgrade') {
4134: $currentstring = $token->[4];
4135: }
4136: return $currentstring;
4137: }
4138:
4139: sub end_thead {
4140: my ($target,$token) = @_;
4141: my $currentstring = '';
4142: if ($target eq 'web' || $target eq 'webgrade') {
4143: $currentstring = $token->[2];
4144: }
4145: return $currentstring;
4146: }
4147:
4148: #-- <var> tag
4149: sub start_var {
4150: my ($target,$token) = @_;
4151: my $currentstring = '';
4152: if ($target eq 'web' || $target eq 'webgrade') {
4153: $currentstring = $token->[4];
4154: } elsif ($target eq 'tex') {
4155: $currentstring = '\textit{';
4156: }
4157: return $currentstring;
4158: }
4159:
4160: sub end_var {
4161: my ($target,$token) = @_;
4162: my $currentstring = '';
4163: if ($target eq 'web' || $target eq 'webgrade') {
4164: $currentstring = $token->[2];
4165: } elsif ($target eq 'tex') {
4166: $currentstring = '}';
4167: }
4168: return $currentstring;
4169: }
4170:
4171: #-- <wbr> tag (end tag forbidden)
4172: sub start_wbr {
4173: my ($target,$token) = @_;
4174: my $currentstring = '';
4175: if ($target eq 'web' || $target eq 'webgrade') {
4176: $currentstring = $token->[4];
4177: }
4178: return $currentstring;
4179: }
4180:
4181: sub end_wbr {
4182: my ($target,$token) = @_;
4183: my $currentstring = '';
4184: if ($target eq 'web' || $target eq 'webgrade') {
4185: $currentstring = $token->[2];
4186: }
4187: return $currentstring;
4188: }
4189:
4190: #-- <hideweboutput> tag
4191: sub start_hideweboutput {
4192: my ($target,$token) = @_;
4193: if ($target eq 'web' || $target eq 'webgrade') {
4194: &Apache::lonxml::startredirection();
4195: }
4196: return '';
4197: }
4198:
4199: sub end_hideweboutput {
4200: my ($target,$token) = @_;
4201: my $currentstring = '';
4202: if ($target eq 'web' || $target eq 'webgrade') {
4203: $currentstring = &Apache::lonxml::endredirection();
4204: }
4205: return '';
4206: }
4207:
4208:
4209: sub image_replication {
4210: my $src = shift;
4211: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4212: #replicates eps or ps
4213: my $epssrc = my $pssrc = $src;
4214: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4215: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4216: if (not -e $epssrc && not -e $pssrc) {
4217: my $result=&Apache::lonnet::repcopy($epssrc);
4218: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4219: }
4220: return '';
4221: }
4222: #
4223: # Get correct sizing parameter for an image given
4224: # it's initial ht. and wid. This allows sizing of
4225: # images that are generated on-the-fly (e.g. gnuplot)
4226: # as well as serving as a utility for image_size.
4227: #
4228: # Parameter:
4229: # height_param
4230: # width_param - Initial picture dimensions.
4231: # scaling - A scale factor.
4232: # parstack, - the current stack of tag attributes
4233: # from the xml parser
4234: # safeeval, - pointer to the safespace
4235: # depth, - from what level in the stack to look for attributes
4236: # (assumes -1 if unspecified)
4237: # cis - look for attrubutes case insensitively
4238: # (assumes false)
4239: #
4240: # Returns:
4241: # height, width - new dimensions.
4242: #
4243: sub resize_image {
4244: my ($height_param, $width_param, $scaling,
4245: $parstack, $safeeval, $depth, $cis) = @_;
4246:
4247: # First apply the scaling...
4248:
4249: $height_param = $height_param * $scaling;
4250: $width_param = $width_param * $scaling;
4251:
4252: #do we have any specified LaTeX size of the picture?
4253: my $toget='TeXwidth';
4254: if ($cis) {
4255: $toget=lc($toget);
4256: }
4257: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4258: $safeeval,$depth,$cis);
4259: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4260: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4261: $safeeval,$depth,$cis);
4262: #do we have any specified web size of the picture?
4263: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4264: $depth,1);
4265: if ($TeXwidth) {
4266: my $old_width_param=$width_param;
4267: if ($TeXwidth=~/(\d+)\s*\%/) {
4268: $width_param = $1*$env{'form.textwidth'}/100;
4269: } else {
4270: $width_param = $TeXwidth;
4271: }
4272: if ($TeXheight) {
4273: $height_param = $TeXheight;
4274: } elsif ($old_width_param) {
4275: $height_param=$TeXwidth/$old_width_param*$height_param;
4276: }
4277: } elsif ($TeXheight) {
4278: $height_param = $TeXheight;
4279: if ($height_param) {
4280: $width_param = $TeXheight/$height_param*$width_param;
4281: }
4282: } elsif ($width) {
4283: my $old_width_param=$width_param;
4284: $width_param = $width*$scaling;
4285: if ($old_width_param) {
4286: $height_param=$width_param/$old_width_param*$height_param;
4287: }
4288: }
4289: if ($width_param > $env{'form.textwidth'}) {
4290: my $old_width_param=$width_param;
4291: $width_param =0.95*$env{'form.textwidth'};
4292: if ($old_width_param) {
4293: $height_param=$width_param/$old_width_param*$height_param;
4294: }
4295: }
4296:
4297: return ($height_param, $width_param);
4298: }
4299:
4300: sub image_size {
4301: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4302:
4303: #size of image from gif/jpg/jpeg/png
4304: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4305: if (-e $ressrc) {
4306: $src = $ressrc;
4307: }
4308: my $image = Image::Magick->new;
4309: my $current_figure = $image->Read($src);
4310: my $width_param = $image->Get('width');
4311: my $height_param = $image->Get('height');
4312: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4313: undef($image);
4314:
4315: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4316: $scaling, $parstack, $safeeval,
4317: $depth, $cis);
4318:
4319: return ($height_param, $width_param);
4320: }
4321:
4322: sub image_width {
4323: my ($height, $width) = &image_size(@_);
4324: return $width;
4325: }
4326: # Not yet 100% sure this is correct in all circumstances..
4327: # due to my uncertainty about mods to image_size.
4328: #
4329: sub image_height {
4330: my ($height, $width) = &image_size(@_);
4331: return $height;
4332: }
4333:
4334: sub get_eps_image {
4335: my ($src)=@_;
4336: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4337:
4338: # In order to prevent the substitution of the alt text, we need to
4339: # be sure the orig_src file is on system now so:
4340:
4341: if (! -e $orig_src) {
4342: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4343: }
4344: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4345: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4346: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4347: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4348: &Apache::lonxml::debug("Filelocation gives: $src");
4349: if (! -e $src) {
4350: &Apache::lonxml::debug("$src does not exist");
4351: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4352: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4353: #if replication failed try to find ps file
4354: $src=~s/\.eps$/\.ps/;
4355: &Apache::lonxml::debug("Now looking for $src");
4356: #if no ps file try to replicate it.
4357: my $didrepcopy = &Apache::lonnet::repcopy($src);
4358: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4359: if ( (not -e $src) ||
4360: ($didrepcopy ne 'ok')) {
4361: &Apache::lonxml::debug("Failed to find or replicate $src");
4362:
4363: #if replication failed try to produce eps file dynamically
4364: $src=~s/\.ps$/\.eps/;
4365: my $temp_file;
4366: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4367: my $newsrc=$orig_src;
4368: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4369: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4370: print FILE ("$newsrc\n");
4371: close(FILE);
4372: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4373: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4374: if ($sext ne "") { # Put the ext. back in to uniquify.
4375: $src =~ s/\.eps$/$sext.eps/;
4376: }
4377:
4378: }
4379:
4380: }
4381: } else {
4382: # If the postscript file has spaces in its name,
4383: # LaTeX will gratuitiously vomit. Therefore
4384: # queue such files for copy with " " replaced by "_".
4385: # printout.pm will know them by their .ps or .eps extensions.
4386: my $newsrc = $orig_src;
4387: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4388: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4389: print FILE "$src\n";
4390: close FILE;
4391: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4392: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4393: }
4394: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4395: $path =~ s/ /\_/g;
4396: $file =~ s/ /\_/g;
4397: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4398: return ($path.'/',$file);
4399: }
4400:
4401: sub eps_generation {
4402: my ($src,$file,$width_param) = @_;
4403: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4404: my $temp_file = Apache::File->new('>>'.$filename);
4405: print $temp_file "$src\n";
4406: my $newsrc = $src;
4407: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4408: $newsrc=~s{/home/httpd/html/res}{};
4409: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4410: $newsrc=~s{/\./}{/};
4411: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4412: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4413: $newsrc=~s{/home/httpd/lonUsers}{};
4414: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4415: }
4416: if ($newsrc=~m{/userfiles/}) {
4417: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4418: } else {
4419: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4420: }
4421: }
4422:
4423: sub file_path {
4424: my $src=shift;
4425: my ($file,$path);
4426: if ($src =~ m!(.*)/([^/]*)$!) {
4427: $file = $2;
4428: $path = $1.'/';
4429: }
4430: return $file,$path;
4431: }
4432: # Converts a measurement in to mm from any of
4433: # the other valid LaTeX units of measure.
4434: # If the units of measure are missing from the
4435: # parameter, it is assumed to be in and returned
4436: # with mm units of measure
4437: sub recalc {
4438: my $argument = shift;
4439: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4440: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4441: my $value=$1;
4442: my $units=$2;
4443: if ($units eq 'cm') {
4444: $value*=10;
4445: } elsif ($units eq 'in') {
4446: $value*=25.4;
4447: } elsif ($units eq 'pc') {
4448: $value*=(25.4*12/72.27);
4449: } elsif ($units eq 'pt') {
4450: $value*=(25.4/72.27);
4451: }
4452: return $value.' mm';
4453: }
4454:
4455: sub LATEX_length {
4456: my $garbage=shift;
4457: $garbage=~s/^\s+$//;
4458: $garbage=~s/^\s+(\S.*)/$1/;#space before
4459: $garbage=~s/(.*\S)\s+$/$1/;#space after
4460: $garbage=~s/(\s)+/$1/;#only one space
4461: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4462: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4463: $garbage=~s/([^\\])\$/$1/g;#$
4464: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4465: $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;
4466: $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;
4467: $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;
4468: $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;
4469: $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;
4470: $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;
4471: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4472: #remove some other LaTeX command
4473: $garbage=~s|\\(\w+)\\|\\|g;
4474: $garbage=~s|\\(\w+)(\s*)|$2|g;
4475: $garbage=~s|\+|11|g;
4476: my $value=length($garbage);
4477: return $value;
4478: }
4479:
4480: # Wrap image 'stuff' inside of the LaTeX required to implement
4481: # alignment:
4482: # align_tex_image(align, latex_rendering, image)
4483: # Where:
4484: # align - The HTML alignment specification.
4485: # latex_rendering - rendering hint for latex.
4486: # image - The LaTeX needed to insert the image itsef.
4487: # width,height - dimensions of the image.
4488: # Returns:
4489: # The 1/2 wrapped image and the stuff required to close the
4490: # wrappage. This allows e.g. randomlabel to insert more stuff
4491: # into the closure.
4492: #
4493: sub align_latex_image {
4494: my ($align, $latex_rendering, $image, $width, $height) = @_;
4495: my $currentstring; # The 1/2 wrapped image.
4496: my $closure; # The closure of the wrappage.
4497: # If there's an alignment specification we need to honor it here.
4498: # For the horizontal alignments, we will also honor the
4499: # value of the latex specfication. The default is parbox,
4500: # and that's used for illegal values too.
4501: #
4502: # Even though we set a default alignment value, the user
4503: # could have given us an illegal value. In that case we
4504: # just use the default alignment of bottom..
4505: $currentstring = "\n% figurewrapping \n";
4506: if ($align eq "top") {
4507: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4508: $closure = '}';
4509: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4510: my $offset = $height/2;
4511: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4512: $closure = '}';
4513: } elsif ($align eq "left") {
4514: if ($latex_rendering eq "parpic") {
4515: $currentstring .= '\parpic[l]{'.$image;
4516: $closure = '}';
4517: } elsif ($latex_rendering eq "parbox") {
4518: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4519: .$image;
4520: $closure = '\end{minipage}';
4521: } elsif ($latex_rendering eq "wrapfigure"
4522: || $latex_rendering ne 'none') { # wrapfig render
4523: $currentstring .=
4524: '\begin{wrapfigure}{l}{'.$width.'mm}'
4525: .'\scalebox{1.0}{'.$image;
4526: $closure = '}\end{wrapfigure}';
4527: }
4528: } elsif ($align eq "right") {
4529: if ($latex_rendering eq "parpic") {
4530: $currentstring .= '\parpic[r]{'.$image;
4531: $closure = '}';
4532: } elsif ($latex_rendering eq "parbox") {
4533: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4534: .$image;
4535: $closure = '\end{minipage}';
4536: } elsif ($latex_rendering eq "wrapfigure"
4537: || $latex_rendering ne 'none') { # wrapfig render
4538: $currentstring .=
4539: '\begin{wrapfigure}{r}{'.$width.'mm}'
4540: .'\scalebox{1.0}{'.$image;
4541: $closure = '}\end{wrapfigure}';
4542: }
4543: } else { # Bottom is also default.
4544: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4545: $currentstring .= "{$image";
4546: $closure = '}';
4547: }
4548: $currentstring .= "\n% end wrappage\n";
4549: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4550: return ($currentstring, $closure);
4551: }
4552:
4553: # is_inside_of $tagstack $tag
4554: # This sub returns true if the current state of Xml processing
4555: # is inside of the tag.
4556: # Parameters:
4557: # tagstack - The tagstack from the parser.
4558: # tag - The tag (without the <>'s.).
4559: # Sample usage:
4560: # if (is_inside_of($tagstack "table")) {
4561: # # I'm in a table....
4562: # }
4563: sub is_inside_of {
4564: my ($tagstack, $tag) = @_;
4565: my @stack = @$tagstack;
4566: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4567: if ($stack[$i] eq $tag) {
4568: return 1;
4569: }
4570: }
4571: return 0;
4572: }
4573:
4574:
4575: 1;
4576: __END__
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