1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.382 2008/03/06 20:31:52 www Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50: use File::Basename;
51: use LONCAPA();
52: # use Data::Dumper;
53:
54: BEGIN {
55:
56: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
57:
58: }
59:
60: #
61: # Dumps all elements of the table structure.
62: # Need this 'cause evidently when given an array, Data::Dumper only seems
63: # to dump element 0.
64: #
65: #sub debug_dump_table {
66: # my $lastrow = $#Apache::londefdef::table;
67: # &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
68: # my $row;
69: # for ($row =0; $row <= $lastrow; $row++ ) {
70: # my $text = Dumper($Apache::londefdef::table[$row]);
71: # &Apache::lonnet::logthis("table [ $row ]".$text);
72: # }
73: #}
74: sub initialize_londefdef {
75: $Apache::londefdef::TD_redirection=0;
76: @Apache::londefdef::table = ();
77: $Apache::londefdef::select=0;
78: undef(@Apache::londefdef::description);
79: @Apache::londefdef::DD=(0);
80: @Apache::londefdef::DT=(0);
81: @Apache::londefdef::seenDT=(0);
82: $Apache::londefdef::list_index=0;
83: undef($Apache::londefdef::head);
84: undef($Apache::londefdef::title);
85: }
86:
87: #======================= TAG SUBROUTINES =====================
88: #-- <output>
89: sub start_output {
90: my ($target) = @_;
91: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
92: return '';
93: }
94: sub end_output {
95: my ($target) = @_;
96: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
97: return '';
98: }
99: #-- <m> tag
100: sub start_m {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
102: my $currentstring = '';
103: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
104: if ($target eq 'web' || $target eq 'analyze') {
105: &Apache::lonxml::debug("M is starting with:$inside:");
106: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
107: if ($eval eq 'on') {
108: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
109: #&Apache::lonxml::debug("M is evaulated to:$inside:");
110: }
111: my $tex = $inside;
112: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
113: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
114: if ($Apache::lontexconvert::errorstring) {
115: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
116: $tex = &HTML::Entities::encode($tex,'<>&"');
117: my ($linenumber) =
118: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
119: if (defined($linenumber)) {
120: my @tex=split("\n",$tex);
121: $tex[$linenumber]='<b><font color="red">'.
122: $tex[$linenumber].'</font></b>';
123: $tex=join("\n",@tex);
124: }
125: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
126: $Apache::lontexconvert::errorstring='';
127: }
128: #&Apache::lonxml::debug("M is ends with:$currentstring:");
129: $Apache::lonxml::post_evaluate=0;
130: } elsif ($target eq 'tex') {
131:
132: $currentstring = $inside;
133: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
134: if ($eval eq 'on') {
135: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
136: }
137: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
138: # detect simple math mode entry exits, and convert them
139: # to use \ensuremath ... unless there's a \verb inside.
140: if (! ($currentstring=~/\\verb/)) {
141: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
142: $currentstring=~s/^(\s*)\$/$1/;
143: $currentstring=~s/\$(\s*)$/$1/;
144: $currentstring='\ensuremath{'.$currentstring.'}';
145: }
146: }
147: $Apache::lonxml::post_evaluate=0;
148: }
149: return $currentstring;
150: }
151:
152: sub end_m {
153: my ($target,$token) = @_;
154: my $currentstring = '';
155: if ($target eq 'tex') {
156: $currentstring = "";
157: }
158: return $currentstring;
159: }
160:
161: sub start_tthoption {
162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
163: my $result;
164: if ($target eq 'web' || $target eq 'webgrade') {
165: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
166: $style);
167: $inside=~s/^\s*//;
168: if ($env{'browser.mathml'}) {
169: &tth::ttmoptions($inside);
170: } else {
171: &tth::tthoptions($inside);
172: }
173: }
174: return $result;
175: }
176:
177: sub end_tthoption {
178: my ($target,$token) = @_;
179: my $result;
180: return $result;
181: }
182:
183: #-- <html> tag (end tag optional)
184: sub start_html {
185: my ($target,$token) = @_;
186: my $currentstring = '';
187: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
188: # start_body() takes care of emitting the <html>
189: } elsif ($target eq 'tex') {
190: $currentstring .=
191: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
192: if (($env{'form.latex_type'}=~'batchmode') ||
193: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
194: $currentstring .= '\newcommand{\keephidden}[1]{}'.
195: '\renewcommand{\deg}{$^{\circ}$}'.
196: '\usepackage{multirow}'.
197: '\usepackage{longtable}'.
198: '\usepackage{textcomp}'.
199: '\usepackage{makeidx}'.
200: '\usepackage[dvips]{graphicx}'.
201: '\usepackage{wrapfig}'.
202: '\usepackage{picins}'.
203: '\usepackage{epsfig}'.
204: '\usepackage{calc}'.
205: '\usepackage{amsmath}'.
206: '\usepackage{amssymb}'.
207: '\usepackage{amsfonts}'.
208: '\usepackage{amsthm}'.
209: '\usepackage{amscd}'.
210: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
211: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
212: }
213: return $currentstring;
214: }
215:
216: sub end_html {
217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
218: my $currentstring = '';
219: if ($target eq 'web' || $target eq 'webgrade') {
220: # end_body takes care of the </html>
221: }
222: return $currentstring;
223: }
224:
225: #-- <head> tag (end tag optional)
226: sub start_head {
227: my ($target,$token) = @_;
228: my $currentstring = '';
229: if ($target eq 'web' || $target eq 'webgrade') {
230: &Apache::lonxml::startredirection();
231: }
232: return $currentstring;
233: }
234:
235: sub end_head {
236: my ($target,$token) = @_;
237: my $currentstring = '';
238: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
239: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
240: # in case there is a </head> but no <head>
241: if ($Apache::lonxml::redirection) {
242: $Apache::londefdef::head = &Apache::lonxml::endredirection();
243: }
244: }
245: return $currentstring;
246: }
247:
248: #-- <map> tag (end tag required)
249: sub start_map {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[4];
254: }
255: return $currentstring;
256: }
257:
258: sub end_map {
259: my ($target,$token) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[2];
263: }
264: return $currentstring;
265: }
266:
267: #-- <select> tag (end tag required)
268: sub start_select {
269: my ($target,$token) = @_;
270: my $currentstring = '';
271: if ($target eq 'web' || $target eq 'webgrade') {
272: $currentstring = $token->[4];
273: } elsif ($target eq 'tex') {
274: $Apache::londefdef::select=0;
275: }
276: return $currentstring;
277: }
278:
279: sub end_select {
280: my ($target,$token) = @_;
281: my $currentstring = '';
282: if ($target eq 'web' || $target eq 'webgrade') {
283: $currentstring = $token->[2];
284: }
285: return $currentstring;
286: }
287:
288: #-- <option> tag (end tag optional)
289: sub start_option {
290: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
291: my $currentstring = '';
292: if ($target eq 'web' || $target eq 'webgrade') {
293: $currentstring = $token->[4];
294: } elsif ($target eq 'tex') {
295: $Apache::londefdef::select++;
296: if ($Apache::londefdef::select == 1) {
297: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
298: } else {
299: $currentstring='\keephidden{';
300: }
301: }
302: return $currentstring;
303: }
304:
305: sub end_option {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[2];
310: } elsif ($target eq 'tex') {
311: $currentstring='}';
312: }
313: return $currentstring;
314: }
315:
316: #-- <input> tag (end tag forbidden)
317: sub start_input {
318: my ($target,$token) = @_;
319: my $currentstring = '';
320: if ($target eq 'web' || $target eq 'webgrade') {
321: $currentstring = $token->[4];
322: }
323: return $currentstring;
324: }
325:
326: sub end_input {
327: my ($target,$token) = @_;
328: my $currentstring = '';
329: if ($target eq 'web' || $target eq 'webgrade') {
330: $currentstring = $token->[2];
331: }
332: return $currentstring;
333: }
334:
335: #-- <textarea> tag (end tag required)
336: sub start_textarea {
337: my ($target,$token) = @_;
338: my $currentstring = '';
339: if ($target eq 'web' || $target eq 'webgrade') {
340: $currentstring = $token->[4];
341: }
342: return $currentstring;
343: }
344:
345: sub end_textarea {
346: my ($target,$token) = @_;
347: my $currentstring = '';
348: if ($target eq 'web' || $target eq 'webgrade') {
349: $currentstring = $token->[2];
350: }
351: return $currentstring;
352: }
353:
354: #-- <form> tag (end tag required)
355: sub start_form {
356: my ($target,$token) = @_;
357: my $currentstring = '';
358: if ($target eq 'web' || $target eq 'webgrade') {
359: $currentstring = $token->[4];
360: }
361: return $currentstring;
362: }
363:
364: sub end_form {
365: my ($target,$token) = @_;
366: my $currentstring = '';
367: if ($target eq 'web' || $target eq 'webgrade') {
368: $currentstring = $token->[2];
369: }
370: return $currentstring;
371: }
372:
373: #-- <title> tag (end tag required)
374: sub start_title {
375: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
376: my $currentstring = '';
377: if ($target eq 'web' || $target eq 'webgrade') {
378: $Apache::londefdef::title =
379: &Apache::lonxml::get_all_text('/title',$parser,$style);
380: } elsif ($target eq 'tex') {
381: $currentstring .= '\keephidden{Title of the document: '
382: }
383: if ($target eq 'meta') {
384: $currentstring='<title>';
385: &start_output($target);
386: }
387: return $currentstring;
388: }
389:
390: sub end_title {
391: my ($target,$token) = @_;
392: my $currentstring = '';
393: if ($target eq 'web' || $target eq 'webgrade') {
394: # start_title takes care of swallowing the title
395: } elsif ($target eq 'tex') {
396: $currentstring .= '}';
397: }
398: if ($target eq 'meta') {
399: &end_output($target);
400: $currentstring='</title>';
401: }
402: return $currentstring;
403: }
404:
405: #-- <meta> tag (end tag forbidden)
406: sub start_meta {
407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
408: my $currentstring = '';
409: if ($target eq 'web' || $target eq 'webgrade') {
410: my $args='';
411: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
412: if ($args eq '') {
413: &Apache::lonxml::get_all_text("/meta",$parser,$style);
414: } else {
415: $currentstring = $token->[4];
416: }
417: } elsif ($target eq 'meta') {
418: unless (&Apache::lonxml::get_param
419: ('http-equiv',$parstack,$safeeval,undef,1)) {
420: my $name=$token->[2]->{'name'};
421: $name=~tr/A-Z/a-z/;
422: $name=~s/\s/\_/gs;
423: $name=~s/\W//gs;
424: if ($name) {
425: $currentstring='<'.$name;
426: my $display=&Apache::lonxml::get_param
427: ('display',$parstack,$safeeval,undef,1);
428: if ($display) {
429: $display=~s/\"/\'/g;
430: $currentstring.=' display="'.$display.'"';
431: }
432: $currentstring.='>'.
433: &Apache::lonxml::get_param
434: ('content',$parstack,$safeeval,undef,1).
435: '</'.$name.'>';
436: }
437: my $display=&Apache::lonxml::get_param
438: ('display',$parstack,$safeeval,undef,1);
439: if ($display) {
440: $display=&HTML::Entities::encode($display,'<>&"');
441: $currentstring.='<'.$name.'.display>'.$display.
442: '</'.$name.'.display>';
443: }
444: }
445: } elsif ($target eq 'tex') {
446: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
447: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
448: if ((not defined $content) && (not defined $name)) {
449: &Apache::lonxml::startredirection();
450: }
451: } elsif ($target eq 'edit') {
452: $currentstring .= &Apache::edit::tag_start($target,$token);
453: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
454: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
455: $currentstring .= &Apache::edit::end_row();
456: } elsif ($target eq 'modified') {
457: my $constructtag =
458: &Apache::edit::get_new_args($token,$parstack,$safeeval,
459: 'name','content');
460: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
461: }
462: return $currentstring;
463: }
464:
465: sub end_meta {
466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
467: my $currentstring = '';
468: if ($target eq 'web' || $target eq 'webgrade') {
469: my $args='';
470: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
471: if ($args ne '') {
472: $currentstring = $token->[4];
473: }
474: } elsif ($target eq 'tex') {
475: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
476: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
477: if ((not defined $content) && (not defined $name)) {
478: &Apache::lonxml::endredirection();
479: }
480: }
481: return $currentstring;
482: }
483:
484: sub insert_meta {
485: return '
486: <meta />';
487: }
488:
489: # accessrule
490: sub start_accessrule {
491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
492: my $currentstring = '';
493: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
494: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
495: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
496: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
497:
498: my ($dom,$crs,$sec,$separator);
499: if ($type eq 'user') {
500: ($dom,$crs,$sec)=split(m{/},$realm);
501: $crs = &LONCAPA::clean_username($crs);
502: $separator = '/';
503: } else {
504: ($dom,$crs,$sec)=split(/\_/,$realm);
505: $crs = &LONCAPA::clean_courseid($crs);
506: $separator = '_';
507: }
508: $dom = &LONCAPA::clean_domain($dom);
509:
510: $sec =~s/\W//;
511: $realm = $dom;
512: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
513: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
514: $role=~s/\W//g;
515:
516: if ($target eq 'web') {
517: my $args='';
518: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
519: if ($args eq '') {
520: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
521: } else {
522: $currentstring = $token->[4];
523: }
524: }
525: if ($target eq 'meta') {
526: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
527: }
528: return $currentstring;
529: }
530:
531: sub end_accessrule {
532: my ($target,$token,$tagstack,$parstack,$parser) = @_;
533: my $currentstring = '';
534: if ($target eq 'web') {
535: my $args='';
536: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
537: if ($args ne '') {
538: $currentstring = $token->[4];
539: }
540: }
541: return $currentstring;
542: }
543:
544: sub generate_css_links {
545: my $links;
546: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
547: if ($css_href =~ /\S/) {
548: &Apache::lonxml::extlink($css_href);
549: $links .=
550: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
551: }
552: return $links;
553: }
554:
555: #-- <body> tag (end tag required)
556: sub start_body {
557: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
558: my $currentstring = '';
559:
560: if ($target eq 'web' || $target eq 'webgrade') {
561: if ($Apache::lonhomework::parsing_a_problem) {
562: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
563: return '';
564: }
565:
566: if (&is_inside_of($tagstack, "head")) {
567: &end_head(@_);
568: }
569:
570: my $extra_head = &generate_css_links();
571:
572: $currentstring =
573: &Apache::loncommon::start_page($Apache::londefdef::title,
574: $Apache::londefdef::head
575: .$extra_head,
576: {'add_entries' => $token->[2],
577: 'no_title' => 1,
578: 'force_register' => 1});
579:
580: if ($env{'request.state'} ne 'published') {
581: $currentstring.=&Apache::lonmenu::constspaceform();
582: $currentstring.=&Apache::londefdef::edit_controls();
583: }
584: $currentstring.=&Apache::lonxml::message_location();
585: } elsif ($target eq 'tex') {
586: $currentstring = '\begin{document}';
587: }
588: return $currentstring;
589: }
590:
591: sub edit_controls {
592: my $result .= (<<EDITBUTTON);
593: <form method="post">
594: <input type="submit" name="editmode" accesskey="e" value="Edit" />
595: </form>
596: <br />
597: EDITBUTTON
598: return $result;
599: }
600:
601: sub end_body {
602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
603: my $currentstring = &end_p(); # Close off unclosed <p>
604: if ($target eq 'web' || $target eq 'webgrade') {
605: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
606: } elsif ($target eq 'tex') {
607: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
608: }
609: return $currentstring;
610: }
611:
612: # \begin{center} causes a new paragprah spacing that looks odd inside
613: # of a table cell. Same at the end of a \center but with a slightly
614: # larger space .. hence center_correction and center_end_correction.
615: #
616: sub center_correction { return '\vspace*{-6 mm}'; }
617: sub center_end_correction { return '\vspace*{-7 mm}'; }
618:
619: #-- <center> tag (end tag required)
620: sub start_center {
621: my ($target,$token,$tagstack) = @_;
622: my $currentstring = &end_p(); # Close off any prior para.
623: if ($target eq 'web' || $target eq 'webgrade') {
624: $currentstring .= $token->[4];
625: } elsif ($target eq 'tex') {
626: if (&is_inside_of($tagstack, "table")) {
627: $currentstring .= ¢er_correction();
628: }
629: $currentstring .= '\begin{center}';
630: }
631: return $currentstring;
632: }
633:
634: sub end_center {
635: my ($target,$token,$tagstack) = @_;
636: my $currentstring = '';
637: if ($target eq 'web' || $target eq 'webgrade') {
638: $currentstring = $token->[2];
639: } elsif ($target eq 'tex') {
640: $currentstring = '\end{center}';
641: if (&is_inside_of($tagstack, "table")) {
642: $currentstring .= ¢er_end_correction();
643: }
644: }
645: return $currentstring;
646: }
647:
648: #-- <b> tag (end tag required)
649: # NOTE: In TeX mode disables internal <p>
650: sub start_b {
651: my ($target,$token) = @_;
652: my $currentstring = '';
653: if ($target eq 'web' || $target eq 'webgrade') {
654: $currentstring = $token->[4];
655: } elsif ($target eq 'tex') {
656: &disable_para();
657: $currentstring .= '\textbf{';
658: }
659: return $currentstring;
660: }
661:
662: sub end_b {
663: my ($target,$token) = @_;
664: my $currentstring = '';
665: if ($target eq 'web' || $target eq 'webgrade') {
666: $currentstring = $token->[2];
667: } elsif ($target eq 'tex') {
668: &enable_para();
669: $currentstring = '}';
670: }
671: return $currentstring;
672: }
673:
674: #-- <strong> tag (end tag required)
675: # NOTE: in TeX mode disables internal <p>
676: sub start_strong {
677: my ($target,$token) = @_;
678: my $currentstring = '';
679: if ($target eq 'web' || $target eq 'webgrade') {
680: $currentstring = $token->[4];
681: } elsif ($target eq 'tex') {
682: &disable_para();
683: $currentstring = '\textbf{';
684: }
685: return $currentstring;
686: }
687:
688: sub end_strong {
689: my ($target,$token) = @_;
690: my $currentstring = '';
691: if ($target eq 'web' || $target eq 'webgrade') {
692: $currentstring = $token->[2];
693: } elsif ($target eq 'tex') {
694: &enable_para();
695: $currentstring = '}';
696: }
697: return $currentstring;
698: }
699:
700: #-- <h1> tag (end tag required)
701: sub start_h1 {
702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
703: my $currentstring = &end_p(); # Close off any prior para.
704: if ($target eq 'web' || $target eq 'webgrade') {
705: $currentstring .= $token->[4];
706: } elsif ($target eq 'tex') {
707: my $pre;
708: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
709: if ($align eq 'center') {
710: $pre='\begin{center}';
711: } elsif ($align eq 'left') {
712: $pre='\rlap{';
713: } elsif ($align eq 'right') {
714: $pre=' \hfill \llap{';
715: }
716: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
717: if (not defined $TeXsize) {$TeXsize="large";}
718: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
719: } elsif ($target eq 'meta') {
720: $currentstring.='<subject>';
721: &start_output($target);
722: }
723: return $currentstring;
724: }
725:
726: sub end_h1 {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
728: my $currentstring = '';
729: if ($target eq 'web' || $target eq 'webgrade') {
730: $currentstring .= $token->[2];
731: } elsif ($target eq 'tex') {
732: my $post='\vskip 0 mm ';
733: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
734: if ($align eq 'center') {
735: $post='\end{center}';
736: } elsif ($align eq 'left') {
737: $post='} \hfill'.'\vskip 0 mm ';
738: } elsif ($align eq 'right') {
739: $post='}'.'\vskip 0 mm ';
740: }
741: $currentstring .= '}}'.$post;
742: } elsif ($target eq 'meta') {
743: &end_output($target);
744: $currentstring='</subject>';
745: }
746: return $currentstring;
747: }
748:
749: #-- <h2> tag
750: sub start_h2 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = &end_p(); # Close off any prior para.
753: if ($target eq 'web' || $target eq 'webgrade') {
754: $currentstring .= $token->[4];
755: } elsif ($target eq 'tex') {
756: my $pre;
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $pre='\begin{center}';
760: } elsif ($align eq 'left') {
761: $pre='\rlap{';
762: } elsif ($align eq 'right') {
763: $pre=' \hfill \llap{';
764: }
765: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
766: if (not defined $TeXsize) {$TeXsize="large";}
767: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
768: }
769: return $currentstring;
770: }
771:
772: sub end_h2 {
773: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
774: my $currentstring = '';
775: if ($target eq 'web' || $target eq 'webgrade') {
776: $currentstring .= $token->[2];
777: } elsif ($target eq 'tex') {
778: my $post='\vskip 0 mm ';
779: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
780: if ($align eq 'center') {
781: $post='\end{center}';
782: } elsif ($align eq 'left') {
783: $post='} \hfill'.'\vskip 0 mm ';
784: } elsif ($align eq 'right') {
785: $post='}'.'\vskip 0 mm ';
786: }
787: $currentstring .= '}}'.$post;
788: }
789: return $currentstring;
790: }
791:
792: #-- <h3> tag
793: sub start_h3 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = &end_p(); # Close off any prior para.
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[4];
798: } elsif ($target eq 'tex') {
799: my $pre;
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $pre='\begin{center}';
803: } elsif ($align eq 'left') {
804: $pre='\rlap{';
805: } elsif ($align eq 'right') {
806: $pre=' \hfill \llap{';
807: }
808: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
809: if (not defined $TeXsize) {$TeXsize="large";}
810: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
811: }
812: return $currentstring;
813: }
814:
815: sub end_h3 {
816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
817: my $currentstring = '';
818: if ($target eq 'web' || $target eq 'webgrade') {
819: $currentstring .= $token->[2];
820: } elsif ($target eq 'tex') {
821: my $post='\vskip 0 mm ';
822: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
823: if ($align eq 'center') {
824: $post='\end{center}';
825: } elsif ($align eq 'left') {
826: $post='} \hfill'.'\vskip 0 mm ';
827: } elsif ($align eq 'right') {
828: $post='}'.'\vskip 0 mm ';
829: }
830: $currentstring .= '}}'.$post;
831: }
832: return $currentstring;
833: }
834:
835: #-- <h4> tag
836: sub start_h4 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = &end_p(); # Close off any prior para.
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[4];
841: } elsif ($target eq 'tex') {
842: my $pre;
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $pre='\begin{center}';
846: } elsif ($align eq 'left') {
847: $pre='\rlap{';
848: } elsif ($align eq 'right') {
849: $pre=' \hfill \llap{';
850: }
851: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
852: if (not defined $TeXsize) {$TeXsize="large";}
853: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
854: }
855: return $currentstring;
856: }
857:
858: sub end_h4 {
859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
860: my $currentstring = '';
861: if ($target eq 'web' || $target eq 'webgrade') {
862: $currentstring .= $token->[2];
863: } elsif ($target eq 'tex') {
864: my $post='\vskip 0 mm ';
865: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
866: if ($align eq 'center') {
867: $post='\end{center}';
868: } elsif ($align eq 'left') {
869: $post='} \hfill'.'\vskip 0 mm ';
870: } elsif ($align eq 'right') {
871: $post='}'.'\vskip 0 mm ';
872: }
873: $currentstring .= '}}'.$post;
874: }
875: return $currentstring;
876: }
877:
878: #-- <h5> tag
879: sub start_h5 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = &end_p(); # Close off any prior paras.
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[4];
884: } elsif ($target eq 'tex') {
885: my $pre;
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $pre='\begin{center}';
889: } elsif ($align eq 'left') {
890: $pre='\rlap{';
891: } elsif ($align eq 'right') {
892: $pre=' \hfill \llap{';
893: }
894: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
895: if (not defined $TeXsize) {$TeXsize="large";}
896: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
897: }
898: return $currentstring;
899: }
900:
901: sub end_h5 {
902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
903: my $currentstring = '';
904: if ($target eq 'web' || $target eq 'webgrade') {
905: $currentstring .= $token->[2];
906: } elsif ($target eq 'tex') {
907: my $post='\vskip 0 mm ';
908: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
909: if ($align eq 'center') {
910: $post='\end{center}';
911: } elsif ($align eq 'left') {
912: $post='} \hfill'.'\vskip 0 mm ';
913: } elsif ($align eq 'right') {
914: $post='}'.'\vskip 0 mm ';
915: }
916: $currentstring .= '}}'.$post;
917: }
918: return $currentstring;
919: }
920:
921: #-- <h6> tag
922: sub start_h6 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = &end_p(); # Close off any prior paras.
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[4];
927: } elsif ($target eq 'tex') {
928: my $pre;
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $pre='\begin{center}';
932: } elsif ($align eq 'left') {
933: $pre='\rlap{';
934: } elsif ($align eq 'right') {
935: $pre=' \hfill \llap{';
936: }
937: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
938: if (not defined $TeXsize) {$TeXsize="large";}
939: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
940: }
941: return $currentstring;
942: }
943:
944: sub end_h6 {
945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
946: my $currentstring = '';
947: if ($target eq 'web' || $target eq 'webgrade') {
948: $currentstring .= $token->[2];
949: } elsif ($target eq 'tex') {
950: my $post='\vskip 0 mm ';
951: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
952: if ($align eq 'center') {
953: $post='\end{center}';
954: } elsif ($align eq 'left') {
955: $post='} \hfill'.'\vskip 0 mm ';
956: } elsif ($align eq 'right') {
957: $post='}'.'\vskip 0 mm ';
958: }
959: $currentstring .= '}}'.$post;
960: }
961: return $currentstring;
962: }
963:
964: #--- <cite> tag (end tag required)
965: sub start_cite {
966: my ($target,$token) = @_;
967: my $currentstring = '';
968: if ($target eq 'web' || $target eq 'webgrade') {
969: $currentstring .= $token->[4];
970: } elsif ($target eq 'tex') {
971: $currentstring .= '\textit{';
972: }
973: return $currentstring;
974: }
975:
976: sub end_cite {
977: my ($target,$token) = @_;
978: my $currentstring = '';
979: if ($target eq 'web' || $target eq 'webgrade') {
980: $currentstring .= $token->[2];
981: } elsif ($target eq 'tex') {
982: $currentstring .= '}';
983: }
984: return $currentstring;
985: }
986:
987: #-- <i> tag (end tag required)
988: sub start_i {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web' || $target eq 'webgrade') {
992: $currentstring .= $token->[4];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '\textit{';
995: }
996: return $currentstring;
997: }
998:
999: sub end_i {
1000: my ($target,$token) = @_;
1001: my $currentstring = '';
1002: if ($target eq 'web' || $target eq 'webgrade') {
1003: $currentstring .= $token->[2];
1004: } elsif ($target eq 'tex') {
1005: $currentstring .= '}';
1006: }
1007: return $currentstring;
1008: }
1009:
1010: #-- <address> tag (end tag required)
1011: sub start_address {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web' || $target eq 'webgrade') {
1015: $currentstring .= $token->[4];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '\textit{';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: sub end_address {
1023: my ($target,$token) = @_;
1024: my $currentstring = '';
1025: if ($target eq 'web' || $target eq 'webgrade') {
1026: $currentstring .= $token->[2];
1027: } elsif ($target eq 'tex') {
1028: $currentstring .= '}';
1029: }
1030: return $currentstring;
1031: }
1032:
1033: #-- <dfn> tag (end tag required)
1034: sub start_dfn {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web' || $target eq 'webgrade') {
1038: $currentstring .= $token->[4];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '\textit{';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: sub end_dfn {
1046: my ($target,$token) = @_;
1047: my $currentstring = '';
1048: if ($target eq 'web' || $target eq 'webgrade') {
1049: $currentstring .= $token->[2];
1050: } elsif ($target eq 'tex') {
1051: $currentstring .= '}';
1052: }
1053: return $currentstring;
1054: }
1055:
1056: #-- <tt> tag (end tag required)
1057: sub start_tt {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web' || $target eq 'webgrade') {
1061: $currentstring .= $token->[4];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '\texttt{';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: sub end_tt {
1069: my ($target,$token) = @_;
1070: my $currentstring = '';
1071: if ($target eq 'web' || $target eq 'webgrade') {
1072: $currentstring .= $token->[2];
1073: } elsif ($target eq 'tex') {
1074: $currentstring .= '}';
1075: }
1076: return $currentstring;
1077: }
1078:
1079: #-- <kbd> tag (end tag required)
1080: sub start_kbd {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web' || $target eq 'webgrade') {
1084: $currentstring .= $token->[4];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '\texttt{';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: sub end_kbd {
1092: my ($target,$token) = @_;
1093: my $currentstring = '';
1094: if ($target eq 'web' || $target eq 'webgrade') {
1095: $currentstring .= $token->[2];
1096: } elsif ($target eq 'tex') {
1097: $currentstring .= '}';
1098: }
1099: return $currentstring;
1100: }
1101:
1102: #-- <code> tag (end tag required)
1103: sub start_code {
1104: my ($target,$token) = @_;
1105: my $currentstring = '';
1106: if ($target eq 'web' || $target eq 'webgrade') {
1107: $currentstring .= $token->[4];
1108: } elsif ($target eq 'tex') {
1109: $currentstring .= '\texttt{';
1110: }
1111: return $currentstring;
1112: }
1113:
1114: sub end_code {
1115: my ($target,$token) = @_;
1116: my $currentstring = '';
1117: if ($target eq 'web' || $target eq 'webgrade') {
1118: $currentstring .= $token->[2];
1119: } elsif ($target eq 'tex') {
1120: $currentstring .= '}';
1121: }
1122: return $currentstring;
1123: }
1124:
1125: #-- <em> tag (end tag required)
1126: sub start_em {
1127: my ($target,$token) = @_;
1128: my $currentstring = '';
1129: if ($target eq 'web' || $target eq 'webgrade') {
1130: $currentstring .= $token->[4];
1131: } elsif ($target eq 'tex') {
1132: $currentstring .= '\emph{';
1133: }
1134: return $currentstring;
1135: }
1136:
1137: sub end_em {
1138: my ($target,$token) = @_;
1139: my $currentstring = '';
1140: if ($target eq 'web' || $target eq 'webgrade') {
1141: $currentstring .= $token->[2];
1142: } elsif ($target eq 'tex') {
1143: $currentstring .= '}';
1144: }
1145: return $currentstring;
1146: }
1147:
1148: #-- <q> tag (end tag required)
1149: sub start_q {
1150: my ($target,$token) = @_;
1151: my $currentstring = '';
1152: if ($target eq 'web' || $target eq 'webgrade') {
1153: $currentstring .= $token->[4];
1154: } elsif ($target eq 'tex') {
1155: $currentstring .= '\emph{';
1156: }
1157: return $currentstring;
1158: }
1159:
1160: sub end_q {
1161: my ($target,$token) = @_;
1162: my $currentstring = '';
1163: if ($target eq 'web' || $target eq 'webgrade') {
1164: $currentstring .= $token->[2];
1165: } elsif ($target eq 'tex') {
1166: $currentstring .= '}';
1167: }
1168: return $currentstring;
1169: }
1170:
1171: # <p> is a bit strange since it does not require a closing </p>
1172: # However in latex, we must often output closing stuff to end
1173: # environments and {}'s etc. Therefore we do all the work
1174: # of figuring out the ending strings in the start tag processing,
1175: # and provide a mechanism to output the stop text external
1176: # to tag processing.
1177: #
1178: {
1179:
1180: my $closing_string = ''; # String required to close <p>
1181:
1182: # Some tags are <p> fragile meaning that <p> inside of them
1183: # does not work within TeX mode. This is managed via the
1184: # counter below:
1185: #
1186:
1187: my $para_disabled = 0;
1188:
1189: sub disable_para {
1190: $para_disabled++;
1191: }
1192: sub enable_para {
1193: $para_disabled--;
1194: }
1195:
1196:
1197: #-- <p> tag (end tag optional)
1198: #optional attribute - align="center|left|right"
1199: sub start_p {
1200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web' || $target eq 'webgrade') {
1203: $currentstring .= &end_p(); # close off prior para if in progress.
1204: $currentstring .= $token->[4];
1205: if (! ($currentstring =~ /\//)) {
1206: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1207: }
1208: } elsif ($target eq 'tex' && !$para_disabled) {
1209:
1210: $currentstring .= &end_p(); # close off prior para if in progress.
1211: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1212: if ($align eq 'center') {
1213: $currentstring .='\begin{center}\par ';
1214: $closing_string = '\end{center}';
1215: if (&is_inside_of($tagstack, "table")) {
1216: $currentstring = ¢er_correction().$currentstring;
1217: }
1218: } elsif ($align eq 'right') {
1219: $currentstring.="\n".'{\flushright ';
1220: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1221: $closing_string= "}\n";
1222: } elsif ($align eq 'left') {
1223: $currentstring.= "\n".'{\flushleft ';
1224: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1225: $closing_string = "}\n";
1226: } else {
1227: $currentstring.='\par ';
1228: if (&is_inside_of($tagstack, 'table')) {
1229: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1230: } else {
1231: $closing_string = '\strut\\\\\strut ';
1232: }
1233: }
1234:
1235: }
1236: return $currentstring;
1237: }
1238: #
1239: # End paragraph processing just requires that we output the
1240: # closing string that was saved and blank it.
1241: sub end_p {
1242: # Note only 'tex' mode uses disable_para and enable_para
1243: # so we don't need to know the target in the check below:
1244:
1245: if (!$para_disabled) {
1246: my $current_string = $closing_string;
1247: $closing_string = ''; # Not in a para anymore.
1248: return $current_string;
1249: } else {
1250: return '';
1251: }
1252:
1253: }
1254: }
1255: #-- <br> tag (end tag forbidden)
1256: sub start_br {
1257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1258: my $currentstring = '';
1259: if ($target eq 'web' || $target eq 'webgrade') {
1260: $currentstring .= $token->[4];
1261: } elsif ($target eq 'tex') {
1262: my @tempo=@$tagstack;
1263: my $signal=0;
1264: # Not going to factor this to is_inside_of since that would require
1265: # multiple stack traversals.
1266: #
1267: for (my $i=$#tempo;$i>=0;$i--) {
1268: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1269: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1270: $signal=1;
1271: }
1272: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1273: $signal = 1;
1274: }
1275: }
1276: if ($signal != 1) {
1277: $currentstring .= '\strut \\\\ \strut ';
1278: }
1279:
1280: }
1281: return $currentstring;
1282: }
1283:
1284: sub end_br {
1285: my ($target,$token) = @_;
1286: my $currentstring = '';
1287: if ($target eq 'web' || $target eq 'webgrade') {
1288: $currentstring .= $token->[2];
1289: }
1290: return $currentstring;
1291: }
1292:
1293: #-- <big> tag (end tag required)
1294: sub start_big {
1295: my ($target,$token) = @_;
1296: my $currentstring = '';
1297: if ($target eq 'web' || $target eq 'webgrade') {
1298: $currentstring .= $token->[4];
1299: } elsif ($target eq 'tex') {
1300: $currentstring .= '{\large ';
1301: }
1302: return $currentstring;
1303: }
1304:
1305: sub end_big {
1306: my ($target,$token) = @_;
1307: my $currentstring = '';
1308: if ($target eq 'web' || $target eq 'webgrade') {
1309: $currentstring .= $token->[2];
1310: } elsif ($target eq 'tex') {
1311: $currentstring .= '}';
1312: }
1313: return $currentstring;
1314: }
1315:
1316: #-- <small> tag (end tag required)
1317: sub start_small {
1318: my ($target,$token) = @_;
1319: my $currentstring = '';
1320: if ($target eq 'web' || $target eq 'webgrade') {
1321: $currentstring .= $token->[4];
1322: } elsif ($target eq 'tex') {
1323: $currentstring .= '{\footnotesize ';
1324: }
1325: return $currentstring;
1326: }
1327:
1328: sub end_small {
1329: my ($target,$token) = @_;
1330: my $currentstring = '';
1331: if ($target eq 'web' || $target eq 'webgrade') {
1332: $currentstring .= $token->[2];
1333: } elsif ($target eq 'tex') {
1334: $currentstring .= '}';
1335: }
1336: return $currentstring;
1337: }
1338:
1339: #-- <basefont> tag (end tag forbidden)
1340: sub start_basefont {
1341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring = $token->[4];
1345: } elsif ($target eq 'tex') {
1346: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1347: if (defined $basesize) {
1348: $currentstring = '{\\'.$basesize.' ';
1349: }
1350: }
1351: return $currentstring;
1352: }
1353:
1354: sub end_basefont {
1355: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1356: my $currentstring = '';
1357: if ($target eq 'web' || $target eq 'webgrade') {
1358: $currentstring = $token->[4];
1359: } elsif ($target eq 'tex') {
1360: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1361: if (defined $basesize) {
1362: $currentstring = '}';
1363: }
1364: }
1365: return $currentstring;
1366: }
1367:
1368: #-- <font> tag (end tag required)
1369: sub start_font {
1370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1371: my $currentstring = '';
1372: if ($target eq 'web' || $target eq 'webgrade') {
1373: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1374: if ($face!~/symbol/i) {
1375: if (($env{'browser.fontenhance'} eq 'on') ||
1376: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1377: }
1378: $currentstring = $token->[4];
1379: } elsif ($target eq 'tex') {
1380: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1381: if (defined $fontsize) {
1382: $currentstring = '{\\'.$fontsize.' ';
1383: }
1384: }
1385: return $currentstring;
1386: }
1387:
1388: sub end_font {
1389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1390: my $currentstring = '';
1391: if ($target eq 'web' || $target eq 'webgrade') {
1392: $currentstring = $token->[2];
1393: } elsif ($target eq 'tex') {
1394: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1395: if (defined $fontsize) {
1396: $currentstring = '}';
1397: }
1398: }
1399: return $currentstring;
1400: }
1401:
1402: #-- <strike> tag (end tag required)
1403: sub start_strike {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web' || $target eq 'webgrade') {
1407: $currentstring .= $token->[4];
1408: } elsif ($target eq 'tex') {
1409: &Apache::lonxml::startredirection();
1410: }
1411: return $currentstring;
1412: }
1413:
1414: sub end_strike {
1415: my ($target,$token) = @_;
1416: my $currentstring = '';
1417: if ($target eq 'web' || $target eq 'webgrade') {
1418: $currentstring .= $token->[2];
1419: } elsif ($target eq 'tex') {
1420: $currentstring=&Apache::lonxml::endredirection();
1421: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1422: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1423: $currentstring=~s/(\S)\s*$/$1\}/;
1424: }
1425: return $currentstring;
1426: }
1427:
1428: #-- <s> tag (end tag required)
1429: sub start_s {
1430: my ($target,$token) = @_;
1431: my $currentstring = '';
1432: if ($target eq 'web' || $target eq 'webgrade') {
1433: $currentstring .= $token->[4];
1434: } elsif ($target eq 'tex') {
1435: &Apache::lonxml::startredirection();
1436: }
1437: return $currentstring;
1438: }
1439:
1440: sub end_s {
1441: my ($target,$token) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web' || $target eq 'webgrade') {
1444: $currentstring .= $token->[2];
1445: } elsif ($target eq 'tex') {
1446: $currentstring=&Apache::lonxml::endredirection();
1447: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1448: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1449: $currentstring=~s/(\S)\s*$/$1\}/;
1450: }
1451: return $currentstring;
1452: }
1453:
1454: #-- <sub> tag (end tag required)
1455: sub start_sub {
1456: my ($target,$token) = @_;
1457: my $currentstring = '';
1458: if ($target eq 'web' || $target eq 'webgrade') {
1459: $currentstring .= $token->[4];
1460: } elsif ($target eq 'tex') {
1461: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1462: }
1463: return $currentstring;
1464: }
1465:
1466: sub end_sub {
1467: my ($target,$token) = @_;
1468: my $currentstring = '';
1469: if ($target eq 'web' || $target eq 'webgrade') {
1470: $currentstring .= $token->[2];
1471: } elsif ($target eq 'tex') {
1472: $currentstring .= '}}';
1473: }
1474: return $currentstring;
1475: }
1476:
1477: #-- <sup> tag (end tag required)
1478: sub start_sup {
1479: my ($target,$token) = @_;
1480: my $currentstring = '';
1481: if ($target eq 'web' || $target eq 'webgrade') {
1482: $currentstring .= $token->[4];
1483: } elsif ($target eq 'tex') {
1484: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1485: }
1486: return $currentstring;
1487: }
1488:
1489: sub end_sup {
1490: my ($target,$token) = @_;
1491: my $currentstring = '';
1492: if ($target eq 'web' || $target eq 'webgrade') {
1493: $currentstring .= $token->[2];
1494: } elsif ($target eq 'tex') {
1495: $currentstring .= '}}';
1496: }
1497: return $currentstring;
1498: }
1499:
1500: #-- <hr> tag (end tag forbidden)
1501: sub start_hr {
1502: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1503: my $currentstring = &end_p(); # End enclosing para.
1504: if ($target eq 'web' || $target eq 'webgrade') {
1505: $currentstring .= $token->[4];
1506: } elsif ($target eq 'tex') {
1507:
1508: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1509: #
1510: my $restart_sub = 0;
1511: my $restart_sup = 0;
1512:
1513: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1514: # using the start_ stop_ functions.. those tags only care about
1515: # $target.
1516:
1517: if (&is_inside_of($tagstack, "sub")) {
1518: $restart_sub = 1;
1519: $currentstring .= &end_sub($target, $token, $tagstack,
1520: $parstack, $parser, $safeeval);
1521: }
1522: if (&is_inside_of($tagstack, "sup")) {
1523: $restart_sup = 1;
1524: $currentstring .= &end_sup($target, $token, $tagstack,
1525: $parstack, $parser, $safeeval);
1526: }
1527:
1528: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1529: if (defined $LaTeXwidth) {
1530: if ($LaTeXwidth=~/^%/) {
1531: substr($LaTeXwidth,0,1)='';
1532: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1533: }
1534: } else {
1535: $LaTeXwidth ='0.9\textwidth';
1536: }
1537: my ($pre,$post);
1538: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1539: if (($align eq 'center') || (not defined $align)) {
1540: $pre=''; $post='';
1541: } elsif ($align eq 'left') {
1542: $pre='\rlap{'; $post='} \hfill';
1543: } elsif ($align eq 'right') {
1544: $pre=' \hfill \llap{'; $post='}';
1545: }
1546: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1547: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1548: # Turn stuff back on that we can't be inside of.
1549:
1550: if ($restart_sub) {
1551: $currentstring .= &start_sub($target, $token, $tagstack,
1552: $parstack, $parser, $safeeval);
1553: }
1554: if ($restart_sup) {
1555: $currentstring .= &start_sup($target, $token, $tagstack,
1556: $parstack, $parser, $safeeval);
1557: }
1558: }
1559: return $currentstring;
1560: }
1561:
1562: sub end_hr {
1563: my ($target,$token) = @_;
1564: my $currentstring = '';
1565: if ($target eq 'web' || $target eq 'webgrade') {
1566: $currentstring .= $token->[2];
1567: }
1568: return $currentstring;
1569: }
1570:
1571: #-- <div> tag (end tag required)
1572: {
1573:
1574: # Since div can be nested, the stack below is used
1575: # in 'tex' mode to store the ending strings
1576: # for the div stack.
1577:
1578: my @div_end_stack;
1579:
1580: sub start_div {
1581: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1582: my $currentstring = &end_p(); # Close enclosing para.
1583: if ($target eq 'web' || $target eq 'webgrade') {
1584: $currentstring .= $token->[4];
1585: }
1586: if ($target eq 'tex') {
1587: # 4 possible alignments: left, right, center, and -missing-.
1588: # If inside a table row, we must let the table logic
1589: # do the alignment, however.
1590: #
1591:
1592: my $endstring = '';
1593:
1594: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1595: $safeeval, undef, 1));
1596: if ($align eq 'center') {
1597: $currentstring .= '\begin{center}';
1598: $endstring = '\end{center}';
1599: if (&is_inside_of($tagstack, "table")) {
1600: $currentstring = ¢er_correction().$currentstring;
1601: $endstring .= ¢er_end_correction();
1602: }
1603: }
1604: elsif ($align eq 'right') {
1605: $currentstring .= '\begin{flushright}';
1606: $endstring .= '\end{flushright}';
1607: } elsif ($align eq 'left') {
1608: $currentstring .= '\begin{flushleft}';
1609: $endstring = '\end{flushleft}';
1610: } else {
1611:
1612: }
1613: $currentstring .= "\n"; # For human readability.
1614: $endstring = "\n$endstring\n"; # For human readability
1615: push(@div_end_stack, $endstring);
1616: }
1617: return $currentstring;
1618: }
1619:
1620: sub end_div {
1621: my ($target,$token) = @_;
1622: my $currentstring = '';
1623: if ($target eq 'web' || $target eq 'webgrade') {
1624: $currentstring .= $token->[2];
1625: }
1626: if ($target eq 'tex') {
1627: my $endstring = pop @div_end_stack;
1628: $currentstring .= $endstring;
1629: }
1630: return $currentstring;
1631: }
1632: }
1633:
1634: #-- <a> tag (end tag required)
1635: sub start_a {
1636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1637: my $currentstring = '';
1638: if ($target eq 'web' || $target eq 'webgrade') {
1639: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1640: undef,1);
1641: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1642: }
1643: return $currentstring;
1644: }
1645:
1646: sub end_a {
1647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1648: my $currentstring = '';
1649: if ($target eq 'web' || $target eq 'webgrade') {
1650: $currentstring .= $token->[2];
1651: }
1652: if ($target eq 'tex') {
1653: my $href =
1654: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1655: my $name =
1656: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1657: my $uriprint =
1658: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1659: my $anchorprint =
1660: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1661: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1662: $href =~ s/([^\\])%/$1\\\%/g;
1663: # Substitute special symbols... and allow line breaks at each /
1664: #
1665: $href = &Apache::lonxml::latex_special_symbols($href);
1666: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1667: $currentstring .= ' ({\tt URI:'.$href.'})';
1668: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1669: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1670: } else {
1671: $currentstring.='';
1672: }
1673: }
1674: return $currentstring;
1675: }
1676:
1677: #-- <li> tag (end tag optional)
1678: sub start_li {
1679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1680: my $currentstring = '';
1681: if ($target eq 'web' || $target eq 'webgrade') {
1682: $currentstring = $token->[4];
1683: } elsif ($target eq 'tex') {
1684: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1685: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1686: #FIXME need to support types i and I
1687: if ($type=~/disc/) {
1688: $currentstring .= ' \item[$\bullet$] ';
1689: } elsif ($type=~/circle/) {
1690: $currentstring .= ' \item[$\circ$] ';
1691: } elsif ($type=~/square/) {
1692: $currentstring .= ' \item[$\diamond$] ';
1693: } elsif ($type eq '1') {
1694: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1695: } elsif ($type eq 'A') {
1696: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1697: } elsif ($type eq 'a') {
1698: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1699: } elsif ($value ne '') {
1700: $currentstring .= ' \item['.$value.'] ';
1701: } else {
1702: $currentstring .= ' \item ';
1703: }
1704: $Apache::londefdef::list_index++;
1705: }
1706: return $currentstring;
1707: }
1708:
1709: sub end_li {
1710: my ($target,$token) = @_;
1711: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1712: if ($target eq 'web' || $target eq 'webgrade') {
1713: $currentstring .= $token->[2];
1714: }
1715: return $currentstring;
1716: }
1717:
1718: #-- <u> tag (end tag required)
1719: sub start_u {
1720: my ($target,$token) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web' || $target eq 'webgrade') {
1723: $currentstring .= $token->[4];
1724: } elsif ($target eq 'tex') {
1725: &Apache::lonxml::startredirection();
1726: }
1727: return $currentstring;
1728: }
1729:
1730: sub end_u {
1731: my ($target,$token) = @_;
1732: my $currentstring = '';
1733: if ($target eq 'web' || $target eq 'webgrade') {
1734: $currentstring .= $token->[2];
1735: } elsif ($target eq 'tex') {
1736: $currentstring=&Apache::lonxml::endredirection();
1737: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1738: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1739: $currentstring=~s/(\S)\s*$/$1\}/;
1740: }
1741: return $currentstring;
1742: }
1743:
1744: #-- <ul> tag (end tag required)
1745: sub start_ul {
1746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1747: my $currentstring = &end_p(); # Close off enclosing list.
1748: if ($target eq 'web' || $target eq 'webgrade') {
1749: $currentstring .= $token->[4];
1750: } elsif ($target eq 'tex') {
1751: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1752: $Apache::londefdef::list_index=0;
1753: if ($TeXtype eq 'disc') {
1754: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1755: '\renewcommand{\labelitemii}{$\bullet$}'.
1756: '\renewcommand{\labelitemiii}{$\bullet$}'.
1757: '\renewcommand{\labelitemiv}{$\bullet$}';
1758: } elsif ($TeXtype eq 'circle') {
1759: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1760: '\renewcommand{\labelitemii}{$\circ$}'.
1761: '\renewcommand{\labelitemiii}{$\circ$}'.
1762: '\renewcommand{\labelitemiv}{$\circ$}';
1763: } elsif ($TeXtype eq 'square') {
1764: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1765: '\renewcommand{\labelitemii}{$\diamond$}'.
1766: '\renewcommand{\labelitemiii}{$\diamond$}'.
1767: '\renewcommand{\labelitemiv}{$\diamond$}';
1768: }
1769: $currentstring .= '\strut \begin{itemize}';
1770: }
1771: return $currentstring;
1772: }
1773:
1774: sub end_ul {
1775: my ($target,$token) = @_;
1776: my $currentstring = '';
1777: if ($target eq 'web' || $target eq 'webgrade') {
1778: $currentstring = $token->[2];
1779: } elsif ($target eq 'tex') {
1780: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1781: '\renewcommand{\labelitemii}{$\bullet$}'.
1782: '\renewcommand{\labelitemiii}{$\bullet$}'.
1783: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1784: }
1785: return $currentstring;
1786: }
1787:
1788: #-- <menu> tag (end tag required)
1789: sub start_menu {
1790: my ($target,$token) = @_;
1791: my $currentstring = '';
1792: if ($target eq 'web' || $target eq 'webgrade') {
1793: $currentstring = $token->[4];
1794: } elsif ($target eq 'tex') {
1795: $currentstring = " \\begin{itemize} ";
1796: }
1797: return $currentstring;
1798: }
1799:
1800: sub end_menu {
1801: my ($target,$token) = @_;
1802: my $currentstring = '';
1803: if ($target eq 'web' || $target eq 'webgrade') {
1804: $currentstring = $token->[2];
1805: } elsif ($target eq 'tex') {
1806: $currentstring = " \\end{itemize}";
1807: }
1808: return $currentstring;
1809: }
1810:
1811: #-- <dir> tag (end tag required)
1812: sub start_dir {
1813: my ($target,$token) = @_;
1814: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1815: if ($target eq 'web' || $target eq 'webgrade') {
1816: $currentstring .= $token->[4];
1817: } elsif ($target eq 'tex') {
1818: $currentstring .= " \\begin{itemize} ";
1819: }
1820: return $currentstring;
1821: }
1822:
1823: sub end_dir {
1824: my ($target,$token) = @_;
1825: my $currentstring = '';
1826: if ($target eq 'web' || $target eq 'webgrade') {
1827: $currentstring = $token->[2];
1828: } elsif ($target eq 'tex') {
1829: $currentstring = " \\end{itemize}";
1830: }
1831: return $currentstring;
1832: }
1833:
1834: #-- <ol> tag (end tag required)
1835: sub start_ol {
1836: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1837: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1838: if ($target eq 'web' || $target eq 'webgrade') {
1839: $currentstring .= $token->[4];
1840: } elsif ($target eq 'tex') {
1841: $Apache::londefdef::list_index=0;
1842: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1843: if ($type eq '1') {
1844: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1845: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1846: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1847: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1848: } elsif ($type eq 'A') {
1849: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1850: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1851: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1852: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1853: } elsif ($type eq 'a') {
1854: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1855: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1856: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1857: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1858: } elsif ($type eq 'i') {
1859: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1860: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1861: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1862: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1863: } elsif ($type eq 'I') {
1864: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1865: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1866: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1867: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1868: }
1869: $currentstring .= '\strut \begin{enumerate}';
1870: }
1871: return $currentstring;
1872: }
1873:
1874: sub end_ol {
1875: my ($target,$token) = @_;
1876: my $currentstring = '';
1877: if ($target eq 'web' || $target eq 'webgrade') {
1878: $currentstring = $token->[2];
1879: } elsif ($target eq 'tex') {
1880: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1881: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1882: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1883: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1884: }
1885: return $currentstring;
1886: }
1887:
1888: #-- <dl> tag (end tag required)
1889: sub start_dl {
1890: my ($target,$token) = @_;
1891: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1892: if ($target eq 'web' || $target eq 'webgrade') {
1893: $currentstring .= $token->[4];
1894: } elsif ($target eq 'tex') {
1895: $currentstring .= '\begin{description}';
1896: $Apache::londefdef::DL++;
1897: push(@Apache::londefdef::description,[]);
1898: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1899: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1900: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1901: }
1902: return $currentstring;
1903: }
1904:
1905: sub end_dl {
1906: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1907: my $currentstring = '';
1908: if ($target eq 'web' || $target eq 'webgrade') {
1909: $currentstring = $token->[2];
1910: } elsif ($target eq 'tex') {
1911: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1912: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1913: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1914: $currentstring.=' '.$element.' ';
1915: }
1916: pop(@Apache::londefdef::description);
1917: $currentstring.='\end{description}';
1918: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1919: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1920: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1921: $Apache::londefdef::DL--;
1922: }
1923: return $currentstring;
1924: }
1925:
1926: #-- <dt> tag (end tag optional)
1927: sub start_dt {
1928: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1929: my $currentstring='';
1930: if ($target eq 'web' || $target eq 'webgrade') {
1931: $currentstring = $token->[4];
1932: } elsif ($target eq 'tex') {
1933: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1934: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1935: &Apache::lonxml::startredirection();
1936: $Apache::londefdef::DT[-1]++;
1937: $Apache::londefdef::seenDT[-1]=1;
1938: }
1939: return $currentstring;
1940: }
1941:
1942: sub end_dt {
1943: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1944: my $currentstring = '';
1945: if ($target eq 'web' || $target eq 'webgrade') {
1946: $currentstring = $token->[2];
1947: } elsif ($target eq 'tex') {
1948: if ($Apache::londefdef::DT[-1]) {
1949: my $data=&item_cleanup();
1950: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1951: $Apache::londefdef::DT[-1]--;
1952: }
1953: }
1954: return $currentstring;
1955: }
1956:
1957: sub item_cleanup {
1958: my $item=&Apache::lonxml::endredirection();
1959: $item=~s/\\begin{center}//g;
1960: $item=~s/\\end{center}//g;
1961: return $item;
1962: }
1963:
1964: #-- <dd> tag (end tag optional)
1965: sub start_dd {
1966: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1967: my $currentstring = '';
1968: if ($target eq 'web' || $target eq 'webgrade') {
1969: $currentstring = $token->[4];
1970: } elsif ($target eq 'tex') {
1971: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1972: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1973: if (!$Apache::londefdef::seenDT[-1]) {
1974: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1975: }
1976: push(@{$Apache::londefdef::description[-1]},'');
1977: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1978: $Apache::londefdef::DD[-1]++;
1979: &Apache::lonxml::startredirection();
1980: }
1981: return $currentstring;
1982: }
1983:
1984: sub end_dd {
1985: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1986: my $currentstring = '';
1987: if ($target eq 'web' || $target eq 'webgrade') {
1988: $currentstring = $token->[2];
1989: } elsif ($target eq 'tex') {
1990: $Apache::londefdef::description[-1]->[-1].=
1991: &Apache::lonxml::endredirection().' \vskip 0mm ';
1992: $Apache::londefdef::DD[-1]--;
1993: }
1994: return $currentstring;
1995: }
1996:
1997: #-- <table> tag (end tag required)
1998: # <table> also ends any prior <p> that is not closed.
1999: # but, unless I allow <p>'s to nest, that's the
2000: # only way I could think of to allow <p> in
2001: # <tr> <th> bodies
2002: #
2003: #list of supported attributes: border,width,TeXwidth
2004: sub start_table {
2005: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2006: my $textwidth = '';
2007: my $currentstring = &end_p();
2008: if ($target eq 'web' || $target eq 'webgrade') {
2009: $currentstring .= $token->[4];
2010: } elsif ($target eq 'tex') {
2011: push(@Apache::londefdef::table, {});
2012: $Apache::londefdef::table[-1]{'row_number'} = -1;
2013: #maximum table's width (default coincides with text line length)
2014: if ($#Apache::londefdef::table==0) {
2015: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2016: $textwidth=~/(\d+\.?\d*)/;
2017: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2018: } else {
2019: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2020: #the maximum width of nested table is determined by LATeX width of parent cell
2021: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2022: } else {
2023: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2024: $textwidth=$Apache::londefdef::table[-2]{'width'};
2025: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2026: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2027: }
2028: }
2029: }
2030:
2031: # width either comes forced from the TeXwidth or the width parameters.
2032: # in either case it can be a percentage or absolute width.
2033: # in the width case we ignore absolute width
2034: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2035: if (!defined($TeXwidth)) {
2036: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2037: $safeeval,undef,1);
2038: if ($htmlwidth =~ /%/) {
2039: $TeXwidth = $htmlwidth;
2040: } else {
2041: $TeXwidth = $textwidth;
2042: }
2043: }
2044: # if the width is specified as a % it is converted to an absolute width.
2045: # otherwise.. just plugged right in the hash
2046:
2047: if ($TeXwidth=~/%/) {
2048: $TeXwidth=~/(\d+)/;
2049: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2050: } else {
2051: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2052: }
2053: # In the end, however the table width cannot be wider than $textwidth...
2054:
2055: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2056: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2057: }
2058: #table's border
2059: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2060: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2061: unless (defined $border) { $border = 0; }
2062: if ($border) {
2063: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2064: $Apache::londefdef::table[-1]{'vinc'} = '&';
2065: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2066: } else {
2067: $Apache::londefdef::table[-1]{'hinc'} = '';
2068: $Apache::londefdef::table[-1]{'vinc'} = '&';
2069: $Apache::londefdef::table[-1]{'vvinc'} = '';
2070: }
2071: if ($#Apache::londefdef::table==0) {
2072: # Note that \newline seems to destroy the alignment envs.
2073: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2074: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2075: }
2076: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2077: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2078: $Apache::londefdef::table[-1]{'objectlen'}=[];
2079: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2080: $Apache::londefdef::table[-1]{'maxlen'}=[];
2081: $Apache::londefdef::table[-1]{'minlen'}=[];
2082: $Apache::londefdef::table[-1]{'content'}=[];
2083: $Apache::londefdef::table[-1]{'align'}=[];
2084: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2085:
2086:
2087: }
2088: return $currentstring;
2089: }
2090:
2091: sub end_table {
2092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2093: my $currentstring = '';
2094: if ($target eq 'web' || $target eq 'webgrade') {
2095: $currentstring = $token->[2];
2096: } elsif ($target eq 'tex') {
2097: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2098: my $inmemory = '';
2099: my $output = '';
2100: my $WARNING='';
2101: #width of columns from TeXwidth attributes
2102:
2103: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2104: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2105: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2106: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2107: }
2108: }
2109: }
2110: #free space and number of empty columns
2111: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2112: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2113: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2114: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2115: $empty_columns++;
2116: } else {
2117: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2118: }
2119: }
2120:
2121: #boundaries for contents columns
2122: my @min_len=();#columns can not be narrower
2123: my @max_len=();#maximum length of column
2124: my $avg_max;
2125: my $avg_min;
2126: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2127: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2128: my ($localmin,$localmax)=(0,0);
2129: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2130: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2131: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2132: }
2133: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2134: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2135: }
2136: }
2137: push @min_len, $localmin;
2138: push @max_len, $localmax;
2139: $avg_max = $localmax + $avg_max;
2140: $avg_min = $localmin + $avg_min;
2141: }
2142: # Does not really matter what the average max/min are if there are no cols.
2143: # and this prevents div 0 in that case.
2144:
2145: if ($counter_cols != 0) {
2146: $avg_max = $avg_max/$counter_cols;
2147: $avg_min = $avg_min/$counter_cols;
2148: }
2149:
2150:
2151: # I don't think the below is needed.. but just in case:
2152:
2153: if ($avg_min > $avg_max) {
2154: my $temp = $avg_min;
2155: $avg_min = $avg_max;
2156: $avg_max = $temp;
2157: }
2158:
2159:
2160: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2161: my $localmin=0,;
2162: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2163: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2164: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2165: }
2166: }
2167: if ($max_len[$jn]<$localmin) {
2168: $max_len[$jn]=$localmin;
2169: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2170: }#object size is bigger
2171: if ($min_len[$jn]<$localmin) {
2172: $min_len[$jn]=$localmin;
2173: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2174: }#object size is bigger
2175: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2176: $min_len[$jn]=0;
2177: $max_len[$jn]=0;
2178: }
2179: # Spans seem to be really bothered by max/min = 0. So if we have one
2180: # make it an average joe max/min.
2181:
2182: if ($max_len[$jn] == 0) {
2183: $max_len[$jn] = $avg_max;
2184: }
2185: if ($min_len[$jn] == 0) {
2186: $min_len[$jn] = $avg_min;
2187: }
2188:
2189: }
2190: #final adjustment of column width
2191: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2192: my @adjust=();
2193: #step 1. adjustment by maximum value
2194: my $space_needed=0;
2195: for (my $jn=0;$jn<=$#max_len;$jn++) {
2196: $space_needed=$space_needed+$max_len[$jn];
2197: }
2198: if ($space_needed<=$available_space) {
2199:
2200: for (my $jn=0;$jn<=$#max_len;$jn++) {
2201: if ($fwidth[$jn]==0) {
2202: $fwidth[$jn]=$max_len[$jn];
2203: }
2204: }
2205: } else {
2206: #step 2. adjustment by minimum value (estimation)
2207: $space_needed=0;
2208: for (my $jn=0;$jn<=$#min_len;$jn++) {
2209: $space_needed+=$min_len[$jn];
2210: }
2211: if ($space_needed>$available_space) {
2212: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2213: for (my $jn=0;$jn<=$#max_len;$jn++) {
2214: if ($fwidth[$jn]==0) {
2215: $fwidth[$jn]=$min_len[$jn];
2216: }
2217: }
2218: #check if we have objects which can be scaled
2219: my $how_many_to_scale=0;
2220: my @to_scale=();
2221: for (my $jn=0;$jn<=$#max_len;$jn++) {
2222: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2223: $how_many_to_scale++;
2224: push @to_scale, $jn;
2225: }
2226: }
2227: if ($how_many_to_scale>0) {
2228: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2229: foreach my $jn (@to_scale) {
2230: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2231: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2232: if ($1 ne '') {
2233: my $current_length=&recalc($1);
2234: $current_length=~/(\d+\.?\d*)/;
2235: $current_length=$current_length-$space_to_adjust;
2236: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2237: }
2238: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2239: if ($1 ne '') {
2240: my $current_length=$1;
2241: $current_length=$current_length-$space_to_adjust;
2242: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2243: }
2244: }
2245: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2246: }
2247: }
2248: } else {
2249: #step 3. adjustment over minimal + corrections
2250: my $enlarge_coef=$available_space/$space_needed;
2251: my $acsessive=0;
2252: for (my $jn=0;$jn<=$#min_len;$jn++) {
2253: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2254: if ($adjust[$jn]>$max_len[$jn]) {
2255: $fwidth[$jn]=$max_len[$jn];
2256: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2257: $adjust[$jn]=0;
2258:
2259: }
2260: }
2261: if ($acsessive>0) {
2262: #we have an excess of space and can redistribute it
2263: my $notempty_columns=0;
2264: for (my $jn=0;$jn<=$#min_len;$jn++) {
2265: if ($adjust[$jn]!=0) {
2266: $notempty_columns++;
2267: }
2268: }
2269: my $per_column=$acsessive/$notempty_columns;
2270: for (my $jn=0;$jn<=$#min_len;$jn++) {
2271: if ($adjust[$jn]!=0) {
2272: $adjust[$jn]+=$per_column;
2273: $fwidth[$jn]=$adjust[$jn];
2274: }
2275: }
2276: } else {
2277: for (my $jn=0;$jn<=$#min_len;$jn++) {
2278: $fwidth[$jn]=$adjust[$jn];
2279: }
2280: }
2281: }
2282: }
2283: # use all available width or specified width as if not specified,
2284: # the specified width gets defaulted to the available width.
2285:
2286: my $current=0;
2287: for (my $i=0;$i<=$#fwidth;$i++) {
2288: $current+=$fwidth[$i];
2289: }
2290: if ($current == 0) {
2291: $current = $Apache::londefdef::table[-1]{'width'};
2292: }
2293: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2294: for (my $i=0;$i<=$#fwidth;$i++) {
2295: $fwidth[$i]*=$coef;
2296: }
2297: #removing of empty columns if allowed
2298: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2299: if ($permission eq 'yes') {
2300: my @cleaned_table=();
2301: my @cleaned_header=();
2302: my $colind=0;
2303: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2304: if ($fwidth[$jn]!=0) {
2305: #we need to copy column
2306: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2307: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2308: $cleaned_header[$colind]=$fwidth[$jn];
2309: }
2310: $colind++;
2311: }
2312: }
2313: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2314: @fwidth=@cleaned_header;
2315: }
2316:
2317:
2318: #construct header of the table
2319: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2320: for (my $in=0;$in<=$#fwidth;$in++) {
2321: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2322: }
2323: $header_of_table .= '}';
2324:
2325: #fill the table
2326: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2327: my $have_rowspan = 0;
2328: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2329:
2330: #-----------------------------------------------------------
2331: # I think this order of doing things will ensure that
2332: # single rowspan, columspan and combined row/colspans will
2333: # work correctly. LaTeX is delicate here.
2334: # RF.
2335:
2336: # Start a rowspan if necessary:
2337:
2338: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2339: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2340: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2341: #
2342: # Do the appropriate magic if this has a colspan
2343: #
2344:
2345: my $border_char = "";
2346: if ($border) {
2347: $border_char = "|";
2348: }
2349: my $spanwidth = 0;
2350: if ($colspan > 1) {
2351: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2352: $spanwidth += $fwidth[$spancol];
2353: }
2354: $output .= '\multicolumn{'.
2355: $colspan
2356: ."}";
2357: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2358: $output .= '{'.$border_char.'c'.$border_char.'}{';
2359: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2360: $output .= '{'.$border_char.'r'.$border_char.'}{';
2361: }
2362: else {
2363: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2364: }
2365:
2366: } else {
2367: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2368: }
2369:
2370: # Rowspan... if colspan is 1, and there's an alignment we'll need
2371: # to kick in a multicolumn in order to get the alignment spec.
2372: # this must precede the multirow or LaTex gets quite upset.
2373: # Naturally if colspan > 1 we've already done that above ^
2374: #
2375: my $multirow_aligned = 0;
2376: if ($rowspan > 1) {
2377: if ($colspan == 1) {
2378: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2379: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2380: $multirow_aligned = 1;
2381: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2382: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2383: $multirow_aligned = 1;
2384: }
2385: }
2386: $have_rowspan++;
2387: if ($multirow_aligned) {
2388: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2389: } else {
2390: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2391: }
2392:
2393: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2394: s{^\s*\\par\s*}{};
2395: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2396: s{\s*\\vskip\s*0pt\s*$}{};
2397:
2398: #
2399: # If we did not throw in a multicolumn to align, then add
2400: # an extra {
2401: # so we close correctly without having to keep additional state
2402: # around
2403: #
2404: if (!$multirow_aligned) {
2405: $output .= '{';
2406: }
2407: }
2408: if (($rowspan eq '^') || ($rowspan eq '_')) {
2409: $have_rowspan++;
2410: }
2411: #--------------------------------------------------------------
2412:
2413:
2414: # For right and center alignment of single cells.
2415: # we are going to use a multicolumn with a span of 1 to specify alignment.
2416: #
2417: if ($colspan == 1 && $rowspan == 1) {
2418: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2419: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2420: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2421: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2422: }
2423: }
2424:
2425: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2426:
2427: if (($colspan == 1 && $rowspan == 1) &&
2428: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2429: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2430: $output .= '}';
2431: }
2432:
2433: # Close off any open multirow:
2434:
2435: if ($rowspan > 1) {
2436: $output .= '}}';
2437: }
2438: # Close off the colspan...
2439: #
2440: if ($colspan > 1) {
2441: $output .= '}';
2442: $jn += $colspan-1; # Adjust for number of rows really left.
2443: }
2444: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2445: }
2446: # If have_rowspan > 0, and borders are on, then
2447: # we need to do more than put an \hline at the bottom of row.
2448: # we need to do the appropriate \cline to ensure that
2449: # the spanned rows don't have \hlines through them.
2450:
2451: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2452: $output .= ' \\\\ ';
2453: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2454: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2455: if ($rowspan ne "^") {
2456: if (($rowspan <= 1) || ($rowspan eq '_')) {
2457: my $column = $jn+1;
2458: $output .= '\cline{'.$column.'-'.$column.'} ';
2459: }
2460: }
2461: }
2462:
2463: } else {
2464: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2465: }
2466: }
2467: # Note that \newline destroys alignment env's produced by e.g. <div>
2468: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2469: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2470: if ($#Apache::londefdef::table > 0) {
2471: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2472: # Figure out max/and min width by summing us and then
2473: # apply that to the current column of the table we nest in
2474: # if it's larger than the current width or the current width
2475: # is undefined.
2476: #
2477: my $min_nested_width = 0;
2478: my $max_nested_width = 0;
2479: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2480: $min_nested_width += $min_len[$col];
2481: $max_nested_width += $max_len[$col];
2482:
2483: }
2484: # Fudge in an extra 5 mm for borders etc:
2485:
2486: $min_nested_width += 5;
2487: $max_nested_width += 5;
2488:
2489: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2490: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2491: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2492: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2493: }
2494: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2495: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2496: }
2497:
2498: pop @Apache::londefdef::table;
2499: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2500: } else {
2501: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2502: pop @Apache::londefdef::table;
2503: undef @Apache::londefdef::table;
2504: }
2505: }
2506: return $currentstring;
2507: }
2508:
2509: #-- <tr> tag (end tag optional)
2510: sub start_tr {
2511: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2512: my $currentstring = '';
2513: if ($target eq 'web' || $target eq 'webgrade') {
2514: $currentstring = $token->[4];
2515: } elsif ($target eq 'tex') {
2516: $Apache::londefdef::table[-1]{'row_number'}++;
2517: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2518: if ($alignchar ne '') {
2519: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2520: } else {
2521: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2522: }
2523: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2524: #
2525: # Need to save the number of table columns to preserve the max # columns.
2526: #
2527: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2528: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2529: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2530: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2531: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2532: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2533: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2534: }
2535: return $currentstring;
2536: }
2537:
2538: sub end_tr {
2539: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2540: my $currentstring = &end_p(); # Close any pending <p> in the row.
2541: if ($target eq 'web' || $target eq 'webgrade') {
2542: $currentstring .= $token->[2];
2543: } elsif ($target eq 'tex') {
2544: if ($Apache::londefdef::TD_redirection) {
2545: &end_td_tex($parstack,$parser,$safeeval);
2546: }
2547: # Counter columns must be the maximum number of columns seen
2548: # in the table so far so:
2549: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2550: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2551: }
2552:
2553:
2554:
2555: }
2556: return $currentstring;
2557: }
2558:
2559: #-- <td> tag (end tag optional)
2560: sub start_td {
2561: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2562: my $currentstring = '';
2563: if ($target eq 'web' || $target eq 'webgrade') {
2564: $currentstring = $token->[4];
2565: } elsif ($target eq 'tex') {
2566: $Apache::londefdef::TD_redirection = 1;
2567: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2568: }
2569: return $currentstring;
2570: }
2571:
2572: sub tag_check {
2573: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2574: my @ar=@$parstack;
2575: for (my $i=$#ar-1;$i>=0;$i--) {
2576: if (lc($$tagstack[$i]) eq $good_tag) {
2577: &start_td_tex($parstack,$parser,$safeeval);
2578: last;
2579: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2580: splice @ar, $i+1;
2581: &end_td_tex(\@ar,$parser,$safeeval);
2582: &start_td_tex($parstack,$parser,$safeeval);
2583: last;
2584: }
2585: }
2586: return '';
2587: }
2588:
2589: sub start_td_tex {
2590: my ($parstack,$parser,$safeeval) = @_;
2591: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2592: if ($alignchar eq '') {
2593: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2594: }
2595: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2596: $Apache::londefdef::table[-1]{'counter_columns'}++;
2597: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2598: if (defined $TeXwidth) {
2599: my $current_length=&recalc($TeXwidth);
2600: $current_length=~/(\d+\.?\d*)/;
2601: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2602: }
2603: &Apache::lonxml::startredirection();
2604: return '';
2605: }
2606:
2607: sub end_td_tex {
2608: my ($parstack,$parser,$safeeval) = @_;
2609: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2610: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2611: my $data = &Apache::lonxml::endredirection();
2612:
2613: # The rowspan array of the table indicates which cells are part of a span.
2614: # n indicates the start of a span set of n rows.
2615: # ^ indicates a cell that continues a span set.
2616: # _ indicates the cell is at the bottom of a span set.
2617: # If this and subsequent cells are part of a rowspan, we must
2618: # push along the row until we find one that is not.
2619:
2620: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2621: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2622: # Part of a span.
2623: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2624: $current_column++;
2625: }
2626: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2627:
2628:
2629: # Get the column and row spans.
2630: # Colspan can be done via \multicolumn if I can figure out the data structs.
2631:
2632: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2633: if (!$colspan) {
2634: $colspan = 1;
2635: }
2636:
2637: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2638: if (!$rowspan) {
2639: $rowspan = 1;
2640: }
2641:
2642:
2643:
2644: for (my $c = 0; $c < $colspan; $c++) {
2645: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2646: for (my $i = 1; $i < $rowspan; $i++) {
2647: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2648: if ($i == ($rowspan-1)) {
2649: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2650: }
2651: }
2652: }
2653:
2654: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2655: if (defined $TeXwidth) {
2656: for (my $c = 0; $c < $colspan; $c++) {
2657: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2658: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2659: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2660: }
2661: } else {
2662: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2663: my $garbage_data=$data;
2664: my $fwidth=0;
2665: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2666: my $current_length=&recalc($1);
2667: $current_length=~/(\d+\.?\d*)/;
2668: if ($fwidth<$1) {$fwidth=$1;}
2669: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2670: }
2671: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2672: my $current_length=$1;
2673: if ($fwidth<$current_length) {$fwidth=$current_length;}
2674: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2675: }
2676: for (my $c = 0; $c < $colspan; $c++) {
2677: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2678: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2679: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2680: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2681: }
2682: } 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)*/) {
2683: my $garbage_data=$data;
2684: my $fwidth=0;
2685: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2686: my $current_length=&recalc($1);
2687: $current_length=~/(\d+\.?\d*)/;
2688: if ($fwidth<$1) {$fwidth=$1;}
2689: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2690: }
2691: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2692: my $current_length=&recalc($1);
2693: $current_length=~/(\d+\.?\d*)/;
2694: if ($fwidth<$1) {$fwidth=$1;}
2695: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2696: }
2697: for (my $c = 0; $c < $colspan; $c++) {
2698: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2699: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2700: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2701: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2702: }
2703: $data=~s/\\\\\s*$//;
2704: } else {
2705: $data=~s/^\s+(\S.*)/$1/;
2706: $data=~s/(.*\S)\s+$/$1/;
2707: $data=~s/(\s)+/$1/;
2708: my ($current_length,$min_length)=(0,0);
2709: if ($data=~/\\vskip/) {
2710: my $newdata=$data;
2711: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2712: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2713: foreach my $elementdata (@newdata) {
2714: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2715: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2716: my @words=split(/ /,$elementdata);
2717: foreach my $word (@words) {
2718: my $lengthword=2.5*&LATEX_length($word);
2719: if ($min_length<$lengthword) {$min_length=$lengthword;}
2720: }
2721: }
2722: } else {
2723: $current_length=2.5*&LATEX_length($data);
2724: my @words=split(/ /,$data);
2725: foreach my $word (@words) {
2726: my $lengthword=2*&LATEX_length($word);
2727: if ($min_length<$lengthword) {$min_length=$lengthword;}
2728: }
2729: }
2730: for (my $c = 0; $c < $colspan; $c++) {
2731: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2732: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2733: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2734: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2735: }
2736: }
2737: }
2738: # Substitute all of the tables nested in this cell in their appropriate places.
2739:
2740:
2741: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2742: for (my $in=0; $in<=$nested_count; $in++) {
2743: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2744: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2745: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2746: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2747:
2748: }
2749: # Should be be killing off the 'include' elements as they're used up?
2750:
2751: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2752:
2753:
2754:
2755:
2756: # the colspan array will indicate how many columns will be spanned by this
2757: # cell..this requires that counter_columns also be adjusted accordingly
2758: # so that the next bunch of text goes in the right cell. Note that since
2759: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2760: #
2761:
2762: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2763: for (my $i = 0; $i < ($colspan -1); $i++) {
2764: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2765: }
2766: for (my $r = 0; $r < $rowspan; $r++) {
2767: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2768: # Put empty text in spanned cols.
2769:
2770: }
2771:
2772:
2773:
2774: return '';
2775: }
2776:
2777: sub end_td {
2778: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2779: my $currentstring = '';
2780: if ($target eq 'web' || $target eq 'webgrade') {
2781: $currentstring = $token->[2];
2782: } elsif ($target eq 'tex') {
2783: $Apache::londefdef::TD_redirection =0;
2784: &end_td_tex($parstack,$parser,$safeeval);
2785: }
2786: return $currentstring;
2787: }
2788:
2789: #-- <th> tag (end tag optional)
2790: sub start_th {
2791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2792: my $currentstring = '';
2793: if ($target eq 'web' || $target eq 'webgrade') {
2794: $currentstring = $token->[4];
2795: } elsif ($target eq 'tex') {
2796: $Apache::londefdef::TD_redirection = 1;
2797: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2798: }
2799: return $currentstring;
2800: }
2801:
2802: sub tagg_check {
2803: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2804: my @ar=@$parstack;
2805: for (my $i=$#ar-1;$i>=0;$i--) {
2806: if (lc($$tagstack[$i]) eq $good_tag) {
2807: &start_th_tex($parstack,$parser,$safeeval);
2808: last;
2809: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2810: splice @ar, $i+1;
2811: &end_th_tex(\@ar,$parser,$safeeval);
2812: &start_th_tex($parstack,$parser,$safeeval);
2813: last;
2814: }
2815: }
2816: return '';
2817: }
2818:
2819: sub start_th_tex {
2820: my ($parstack,$parser,$safeeval) = @_;
2821: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2822: if ($alignchar eq '') {
2823: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2824: }
2825: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2826: $Apache::londefdef::table[-1]{'counter_columns'}++;
2827: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2828: if (defined $TeXwidth) {
2829: my $current_length=&recalc($TeXwidth);
2830: $current_length=~/(\d+\.?\d*)/;
2831: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2832: }
2833: &Apache::lonxml::startredirection();
2834: return '';
2835: }
2836:
2837: sub end_th_tex {
2838: my ($parstack,$parser,$safeeval) = @_;
2839: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2840: my $data=&Apache::lonxml::endredirection();
2841: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2842: if (defined $TeXwidth) {
2843: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2844: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2845: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2846: } else {
2847: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2848: my $garbage_data=$data;
2849: my $fwidth=0;
2850: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2851: my $current_length=&recalc($1);
2852: $current_length=~/(\d+\.?\d*)/;
2853: if ($fwidth<$1) {$fwidth=$1;}
2854: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2855: }
2856: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2857: my $current_length=$1;
2858: if ($fwidth<$current_length) {$fwidth=$current_length;}
2859: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2860: }
2861: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2862: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2863: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2864: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2865: } else {
2866: $data=~s/^\s+(\S.*)/$1/;
2867: $data=~s/(.*\S)\s+$/$1/;
2868: $data=~s/(\s)+/$1/;
2869: my ($current_length,$min_length)=(0,0);
2870: if ($data=~/\\vskip/) {
2871: my $newdata=$data;
2872: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2873: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2874: foreach my $elementdata (@newdata) {
2875: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2876: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2877: my @words=split(/ /,$elementdata);
2878: foreach my $word (@words) {
2879: my $lengthword=2.5*&LATEX_length($word);
2880: if ($min_length<$lengthword) {$min_length=$lengthword;}
2881: }
2882: }
2883: } else {
2884: $current_length=2.5*&LATEX_length($data);
2885: my @words=split(/ /,$data);
2886: foreach my $word (@words) {
2887: my $lengthword=2*&LATEX_length($word);
2888: if ($min_length<$lengthword) {$min_length=$lengthword;}
2889: }
2890: }
2891: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2892: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2893: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2894: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2895: }
2896: }
2897: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2898: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2899: }
2900: #make data bold
2901: $data='\textbf{'.$data.'}';
2902: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2903: return'';
2904: }
2905:
2906: sub end_th {
2907: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2908: my $currentstring = &end_p(); # Close any open <p> in the row.
2909: if ($target eq 'web' || $target eq 'webgrade') {
2910: $currentstring .= $token->[2];
2911: } elsif ($target eq 'tex') {
2912: $Apache::londefdef::TD_redirection =0;
2913: &end_th_tex($parstack,$parser,$safeeval);
2914: }
2915: return $currentstring;
2916: }
2917:
2918: #-- <img> tag (end tag forbidden)
2919: #
2920: # Render the <IMG> tag.
2921: # <IMG> has the following attributes (in addition to the
2922: # standard HTML ones:
2923: # TeXwrap - Governs how the tex target will try to wrap text around
2924: # horizontally aligned images.
2925: # TeXwidth - The width of the image when rendered for print (mm).
2926: # TeXheight - The height of the image when rendered for print (mm)
2927: # (Note there seems to also be support for this as a % of page size)
2928: #
2929: sub start_img {
2930: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2931: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2932: undef,1);
2933: if (! $src &&
2934: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2935: ) {
2936: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2937: return '';
2938: }
2939: &Apache::lonxml::extlink($src);
2940: my $currentstring = '';
2941: my $scaling = .3;
2942:
2943: # Render unto browsers that which are the browser's...
2944:
2945: if ($target eq 'web' || $target eq 'webgrade') {
2946: if ($env{'browser.imagesuppress'} ne 'on') {
2947: my $enc = ('yes' eq
2948: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2949: $safeeval)));
2950: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2951: $enc);
2952: } else {
2953: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2954: undef,1);
2955: if (!$alttag) {
2956: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2957: $src);
2958: }
2959: $currentstring.='[IMAGE: '.$alttag.']';
2960: }
2961:
2962: # and render unto TeX that which is LaTeX
2963:
2964: } elsif ($target eq 'tex') {
2965: #
2966: # The alignment will require some superstructure to be put around
2967: # the \includegraphics stuff. At present we can only partially
2968: # simulate the alignments offered by html.
2969: #
2970: #
2971: my $align = lc(&Apache::lonxml::get_param('align',
2972: $parstack,
2973: $safeeval,
2974: undef,1));
2975: if(!$align) {
2976: $align = "bottom"; # This is html's default so it's ours too.
2977: }
2978: #
2979: &Apache::lonxml::debug("Alignemnt = $align");
2980: # LaTeX's image/text wrapping is really bad since it wants to
2981: # make figures float.
2982: # The user has the optional parameter (applicable only to l/r
2983: # alignment to use the picins/parpic directive to get wrapped text
2984: # this is also imperfect.. that's why we give them a choice...
2985: # so they can't yell at us for our choice.
2986: #
2987: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2988: $parstack,
2989: $safeeval,
2990: undef,0);
2991: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2992: if(!$latex_rendering) {
2993: $latex_rendering = "texwrap";
2994: }
2995: # using texwrap inside a table does not work. So, if after all of this,
2996: # texwrap is on, we turn it off if we detect we're in a table:
2997: #
2998: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2999: $latex_rendering = 'parpic';
3000: }
3001:
3002: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3003:
3004: #if original gif/jpg/png file exist do following:
3005: my $origsrc=$src;
3006: my ($path,$file) = &get_eps_image($src);
3007: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3008: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3009: &Apache::lonxml::debug("path = $path file = $file src = $src");
3010: if (-e $src) {
3011: &Apache::lonxml::debug("$src exists");
3012: my ($height_param,$width_param)=
3013: &image_size($origsrc,0.3,$parstack,$safeeval);
3014: my $size;
3015: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3016: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3017: # Default size if not able to extract that (e.g. eps image).
3018:
3019: # &Apache::lonnet::logthis("Size = $size");
3020:
3021: $size='['.$size;
3022: $size=~s/,$/]/;
3023: $currentstring .= '\graphicspath{{'.$path.'}}'
3024: .'\includegraphics'.$size.'{'.$file.'} ';
3025: my $closure;
3026: ($currentstring, $closure) = &align_latex_image($align,
3027: $latex_rendering,
3028: $currentstring,
3029: $width_param,
3030: $height_param);
3031: $currentstring .= $closure;
3032:
3033: } else {
3034: &Apache::lonxml::debug("$src does not exist");
3035: #original image file doesn't exist so check the alt attribute
3036: my $alt =
3037: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3038: unless ($alt) {
3039: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3040: }
3041:
3042: if ($alt) { $currentstring .= ' '.$alt.' '; }
3043: }
3044:
3045: # And here's where the semi-quote breaks down: allow the user
3046: # to edit the beast as well by rendering the problem for edit:
3047: } elsif ($target eq 'edit') {
3048: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3049: $currentstring .=&Apache::edit::tag_start($target,$token);
3050: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3051: &Apache::edit::browse('src',undef,'alt',$only).' '.
3052: &Apache::edit::search('src',undef,'alt').'<br />';
3053: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3054: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3055: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3056: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3057: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3058: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3059: ['','bottom','middle','top','left','right'],$token,5);
3060: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3061: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3062: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3063: ['no','yes'], $token, 2);
3064: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3065: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3066: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3067: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3068: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3069:
3070: if ($token->[2]{'src'}=~/\$/) {
3071: $currentstring.='Variable image source';
3072: } else {
3073: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3074: if ($width) { $currentstring.=' width="'.$width.'" '; }
3075: if ($height) { $currentstring.=' height="'.$height.'" '; }
3076: $currentstring .= ' />';
3077: }
3078: } elsif ($target eq 'modified') {
3079: my ($osrc,$owidth,$oheight)=
3080: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3081: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3082: $safeeval,'src','alt','align',
3083: 'TeXwidth','TeXheight', 'TeXwrap',
3084: 'width','height','encrypturl');
3085: my ($nsrc,$nwidth,$nheight)=
3086: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3087: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3088: &image_replication($loc);
3089: my ($iwidth,$iheight);
3090: if (-e $loc) {
3091: my $image = Image::Magick->new;
3092: $image->Read($loc);
3093: ($iwidth, $iheight) = ($image->Get('width'),
3094: $image->Get('height'));
3095: }
3096: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3097: # changed image or no size specified,
3098: # if they didn't explicitly change the
3099: # width or height use the ones from the image
3100: if ($iwidth && $iheight) {
3101: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3102: $token->[2]{'width'} = $iwidth;$ctag=1;
3103: }
3104: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3105: $token->[2]{'height'}=$iheight;$ctag=1;
3106: }
3107: }
3108: }
3109: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3110: # if we don't have a width or height
3111: if ($iwidth && $cwidth && !$cheight) {
3112: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3113: }
3114: if ($iheight && $cheight && !$cwidth) {
3115: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3116: }
3117: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3118: }
3119:
3120: return $currentstring;
3121: }
3122:
3123: sub end_img {
3124: my ($target,$token) = @_;
3125: my $currentstring = '';
3126: if ($target eq 'web' || $target eq 'webgrade') {
3127: $currentstring = $token->[2];
3128: } elsif ($target eq 'tex') {
3129: $currentstring = '';
3130: }
3131: return $currentstring;
3132: }
3133:
3134: #-- <applet> tag (end tag required)
3135: sub start_applet {
3136: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3137:
3138: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3139: &Apache::lonxml::extlink($code);
3140: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3141: undef,1);
3142: &Apache::lonxml::extlink($archive);
3143: my $currentstring = '';
3144: if ($target eq 'web' || $target eq 'webgrade') {
3145: if ($env{'browser.appletsuppress'} ne 'on') {
3146: $currentstring = &Apache::lonenc::encrypt_ref($token,
3147: {'code'=>$code,
3148: 'archive'=>$archive}
3149: );
3150: } else {
3151: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3152: $safeeval,undef,1);
3153: unless ($alttag) {
3154: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3155: $code);
3156: }
3157: $currentstring='[APPLET: '.$alttag.']';
3158: }
3159: } elsif ($target eq 'tex') {
3160: # Turn off some stuff we can't be inside thank you LaTeX
3161:
3162:
3163: my $restart_sub = 0;
3164: my $restart_sup = 0;
3165:
3166: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3167: # using the start_ stop_ functions.. those tags only care about
3168: # $target.
3169:
3170: if (&is_inside_of($tagstack, "sub")) {
3171: $restart_sub = 1;
3172: $currentstring .= &end_sub($target, $token, $tagstack,
3173: $parstack, $parser, $safeeval);
3174: }
3175: if (&is_inside_of($tagstack, "sup")) {
3176: $restart_sup = 1;
3177: $currentstring .= &end_sup($target, $token, $tagstack,
3178: $parstack, $parser, $safeeval);
3179: }
3180:
3181: # Now process the applet; just replace it with its alt attribute.
3182:
3183: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3184: $safeeval,undef,1);
3185: unless ($alttag) {
3186: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3187: undef,1);
3188: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3189: $code);
3190: }
3191: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3192: '.}\end{center}';
3193:
3194: # Turn stuff back on that we can't be inside of.
3195:
3196: if ($restart_sub) {
3197: $currentstring .= &start_sub($target, $token, $tagstack,
3198: $parstack, $parser, $safeeval);
3199: }
3200: if ($restart_sup) {
3201: $currentstring .= &start_sup($target, $token, $tagstack,
3202: $parstack, $parser, $safeeval);
3203: }
3204: }
3205: return $currentstring;
3206: }
3207:
3208: sub end_applet {
3209: my ($target,$token) = @_;
3210: my $currentstring = '';
3211: if ($target eq 'web' || $target eq 'webgrade') {
3212: $currentstring = $token->[2];
3213: } elsif ($target eq 'tex') {
3214: }
3215: return $currentstring;
3216: }
3217:
3218: #-- <embed> tag (end tag optional/required)
3219: sub start_embed {
3220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3221: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3222: &Apache::lonxml::extlink($src);
3223: my $currentstring = '';
3224: if ($target eq 'web' || $target eq 'webgrade') {
3225: if ($env{'browser.embedsuppress'} ne 'on') {
3226: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3227: } else {
3228: my $alttag=&Apache::lonxml::get_param
3229: ('alt',$parstack,$safeeval,undef,1);
3230: unless ($alttag) {
3231: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3232: }
3233: $currentstring='[EMBED: '.$alttag.']';
3234: }
3235: } elsif ($target eq 'tex') {
3236: }
3237: return $currentstring;
3238: }
3239:
3240: sub end_embed {
3241: my ($target,$token) = @_;
3242: my $currentstring = '';
3243: if ($target eq 'web' || $target eq 'webgrade') {
3244: $currentstring = $token->[2];
3245: } elsif ($target eq 'tex') {
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <param> tag (end tag forbidden)
3251: sub start_param {
3252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3253: if (&Apache::lonxml::get_param('name',$parstack,
3254: $safeeval,undef,1)=~/^cabbase$/i) {
3255: my $value=&Apache::lonxml::get_param('value',$parstack,
3256: $safeeval,undef,1);
3257: &Apache::lonxml::extlink($value);
3258: }
3259:
3260: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3261: &Apache::lonxml::extlink($src);
3262: my $currentstring = '';
3263: if ($target eq 'web' || $target eq 'webgrade') {
3264: my %toconvert;
3265: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3266: if ($src) { $toconvert{'src'}= $src; }
3267: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3268: undef,1);
3269: if ($name=~/^cabbase$/i) {
3270: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3271: $safeeval,undef,1);
3272: }
3273: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3274: } elsif ($target eq 'tex') {
3275: }
3276: return $currentstring;
3277: }
3278:
3279: sub end_param {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web' || $target eq 'webgrade') {
3283: $currentstring = $token->[2];
3284: } elsif ($target eq 'tex') {
3285: }
3286: return $currentstring;
3287: }
3288:
3289: #-- <allow> tag
3290: sub start_allow {
3291: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3292: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3293: &Apache::lonxml::extlink($src);
3294:
3295: if ($target eq 'tex') { &image_replication($src); }
3296: my $result;
3297: if ($target eq 'edit') {
3298: $result .=&Apache::edit::tag_start($target,$token);
3299: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3300: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3301: } elsif ($target eq 'modified') {
3302: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3303: $safeeval,'src');
3304: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3305: }
3306: return $result;
3307: }
3308:
3309: sub end_allow {
3310: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3311: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3312: return '';
3313: }
3314:
3315: #-- Frames (end tag required)
3316: #-- <frameset>
3317: sub start_frameset {
3318: my ($target,$token) = @_;
3319: my $currentstring = ''; # Close any pending para.
3320: if ($target eq 'web' || $target eq 'webgrade') {
3321: $currentstring =
3322: &Apache::loncommon::start_page($Apache::londefdef::title,
3323: $Apache::londefdef::head,
3324: {'add_entries' => $token->[2],
3325: 'no_title' => 1,
3326: 'force_register' => 1,
3327: 'frameset' => 1,});
3328:
3329: }
3330: return $currentstring;
3331: }
3332:
3333: sub end_frameset {
3334: my ($target,$token) = @_;
3335: my $currentstring = '';
3336: if ($target eq 'web' || $target eq 'webgrade') {
3337: $currentstring = $token->[2];
3338: }
3339: return $currentstring;
3340: }
3341:
3342: #-- <xmp> (end tag required)
3343: sub start_xmp {
3344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3345: my $currentstring = '';
3346: if ($target eq 'web' || $target eq 'webgrade') {
3347: $currentstring .= $token->[4];
3348: } elsif ($target eq 'tex') {
3349: $currentstring .= '\begin{verbatim}';
3350: }
3351: return $currentstring;
3352: }
3353:
3354: sub end_xmp {
3355: my ($target,$token) = @_;
3356: my $currentstring = '';
3357: if ($target eq 'web' || $target eq 'webgrade') {
3358: $currentstring .= $token->[2];
3359: } elsif ($target eq 'tex') {
3360: $currentstring .= '\end{verbatim}';
3361: }
3362: return $currentstring;
3363: }
3364:
3365: #-- <pre> (end tag required)
3366: sub start_pre {
3367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3368: my $currentstring = &end_p(); # close off pending <p>
3369: if ($target eq 'web' || $target eq 'webgrade') {
3370: $currentstring .= $token->[4];
3371: } elsif ($target eq 'tex') {
3372: $currentstring .= '\begin{verbatim}';
3373: &Apache::lonxml::disable_LaTeX_substitutions();
3374: }
3375: return $currentstring;
3376: }
3377:
3378: sub end_pre {
3379: my ($target,$token) = @_;
3380: my $currentstring = '';
3381: if ($target eq 'web' || $target eq 'webgrade') {
3382: $currentstring .= $token->[2];
3383: } elsif ($target eq 'tex') {
3384: $currentstring .= '\end{verbatim}';
3385: &Apache::lonxml::enable_LaTeX_substitutions();
3386: }
3387: return $currentstring;
3388: }
3389:
3390: #-- <insert>
3391: sub start_insert {
3392: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3396: $currentstring .= '<b>'.$display.'</b>';;
3397: }
3398: return $currentstring;
3399: }
3400:
3401: sub end_insert {
3402: my ($target,$token) = @_;
3403: my $currentstring = '';
3404: if ($target eq 'web' || $target eq 'webgrade') {
3405: $currentstring .= '';
3406: }
3407: return $currentstring;
3408: }
3409:
3410: #-- <externallink>
3411: sub start_externallink {
3412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3413: my $currentstring = '';
3414: if ($target eq 'web' || $target eq 'webgrade') {
3415: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3416: $currentstring .= '<b>'.$display.'</b>';;
3417: }
3418: return $currentstring;
3419: }
3420:
3421: sub end_externallink {
3422: my ($target,$token) = @_;
3423: my $currentstring = '';
3424: if ($target eq 'web' || $target eq 'webgrade') {
3425: $currentstring .= '';
3426: }
3427: return $currentstring;
3428: }
3429:
3430: #-- <blankspace heigth="">
3431: sub start_blankspace {
3432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3433: my $currentstring = &end_p(); # closes off any unclosed <p>
3434: if ($target eq 'tex') {
3435: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3436: $currentstring .= '\vskip '.$howmuch.' ';
3437: }
3438: return $currentstring;
3439: }
3440:
3441: sub end_blankspace {
3442: my ($target,$token) = @_;
3443: my $currentstring = '';
3444: if ($target eq 'tex') {
3445: $currentstring .= '';
3446: }
3447: return $currentstring;
3448: }
3449:
3450: #-- <abbr> tag (end tag required)
3451: sub start_abbr {
3452: my ($target,$token) = @_;
3453: my $currentstring = '';
3454: if ($target eq 'web' || $target eq 'webgrade') {
3455: $currentstring = $token->[4];
3456: }
3457: return $currentstring;
3458: }
3459:
3460: sub end_abbr {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web' || $target eq 'webgrade') {
3464: $currentstring = $token->[2];
3465: }
3466: return $currentstring;
3467: }
3468:
3469: #-- <acronym> tag (end tag required)
3470: sub start_acronym {
3471: my ($target,$token) = @_;
3472: my $currentstring = '';
3473: if ($target eq 'web' || $target eq 'webgrade') {
3474: $currentstring = $token->[4];
3475: }
3476: return $currentstring;
3477: }
3478:
3479: sub end_acronym {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web' || $target eq 'webgrade') {
3483: $currentstring = $token->[2];
3484: }
3485: return $currentstring;
3486: }
3487:
3488: #-- <area> tag (end tag forbidden)
3489: sub start_area {
3490: my ($target,$token) = @_;
3491: my $currentstring = '';
3492: if ($target eq 'web' || $target eq 'webgrade') {
3493: $currentstring = $token->[4];
3494: }
3495: return $currentstring;
3496: }
3497:
3498: sub end_area {
3499: my ($target,$token) = @_;
3500: my $currentstring = '';
3501: if ($target eq 'web' || $target eq 'webgrade') {
3502: $currentstring = $token->[2];
3503: }
3504: return $currentstring;
3505: }
3506:
3507: #-- <base> tag (end tag forbidden)
3508: sub start_base {
3509: my ($target,$token) = @_;
3510: my $currentstring = '';
3511: if ($target eq 'web' || $target eq 'webgrade') {
3512: $currentstring = $token->[4];
3513: }
3514: return $currentstring;
3515: }
3516:
3517: sub end_base {
3518: my ($target,$token) = @_;
3519: my $currentstring = '';
3520: if ($target eq 'web' || $target eq 'webgrade') {
3521: $currentstring = $token->[2];
3522: }
3523: return $currentstring;
3524: }
3525:
3526: #-- <bdo> tag (end tag required)
3527: sub start_bdo {
3528: my ($target,$token) = @_;
3529: my $currentstring = '';
3530: if ($target eq 'web' || $target eq 'webgrade') {
3531: $currentstring = $token->[4];
3532: }
3533: return $currentstring;
3534: }
3535:
3536: sub end_bdo {
3537: my ($target,$token) = @_;
3538: my $currentstring = '';
3539: if ($target eq 'web' || $target eq 'webgrade') {
3540: $currentstring = $token->[2];
3541: }
3542: return $currentstring;
3543: }
3544:
3545: #-- <bgsound> tag (end tag optional)
3546: sub start_bgsound {
3547: my ($target,$token) = @_;
3548: my $currentstring = '';
3549: if ($target eq 'web' || $target eq 'webgrade') {
3550: $currentstring = $token->[4];
3551: }
3552: return $currentstring;
3553: }
3554:
3555: sub end_bgsound {
3556: my ($target,$token) = @_;
3557: my $currentstring = '';
3558: if ($target eq 'web' || $target eq 'webgrade') {
3559: $currentstring = $token->[2];
3560: }
3561: return $currentstring;
3562: }
3563:
3564: #-- <blink> tag (end tag required)
3565: sub start_blink {
3566: my ($target,$token) = @_;
3567: my $currentstring = '';
3568: if ($target eq 'web' || $target eq 'webgrade') {
3569: $currentstring = $token->[4];
3570: }
3571: return $currentstring;
3572: }
3573:
3574: sub end_blink {
3575: my ($target,$token) = @_;
3576: my $currentstring = '';
3577: if ($target eq 'web' || $target eq 'webgrade') {
3578: $currentstring = $token->[2];
3579: }
3580: return $currentstring;
3581: }
3582:
3583: #-- <blockquote> tag (end tag required)
3584: sub start_blockquote {
3585: my ($target,$token) = @_;
3586: my $currentstring = &end_p(); # Close any unclosed <p>
3587: if ($target eq 'web' || $target eq 'webgrade') {
3588: $currentstring .= $token->[4];
3589: }
3590: if ($target eq 'tex') {
3591: $currentstring .= '\begin{quote}';
3592: }
3593: return $currentstring;
3594: }
3595:
3596: sub end_blockquote {
3597: my ($target,$token) = @_;
3598: my $currentstring = '';
3599: if ($target eq 'web' || $target eq 'webgrade') {
3600: $currentstring = $token->[2];
3601: }
3602: if ($target eq 'tex') {
3603: $currentstring = '\end{quote}';
3604: }
3605: return $currentstring;
3606: }
3607:
3608: #-- <button> tag (end tag required)
3609: sub start_button {
3610: my ($target,$token) = @_;
3611: my $currentstring = '';
3612: if ($target eq 'web' || $target eq 'webgrade') {
3613: $currentstring = $token->[4];
3614: }
3615: return $currentstring;
3616: }
3617:
3618: sub end_button {
3619: my ($target,$token) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: $currentstring = $token->[2];
3623: }
3624: return $currentstring;
3625: }
3626:
3627: #-- <caption> tag (end tag required)
3628: sub start_caption {
3629: my ($target,$token) = @_;
3630: my $currentstring = '';
3631: if ($target eq 'web' || $target eq 'webgrade') {
3632: $currentstring = $token->[4];
3633: }
3634: return $currentstring;
3635: }
3636:
3637: sub end_caption {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web' || $target eq 'webgrade') {
3641: $currentstring = $token->[2];
3642: }
3643: return $currentstring;
3644: }
3645:
3646: #-- <col> tag (end tag forbdden)
3647: sub start_col {
3648: my ($target,$token) = @_;
3649: my $currentstring = '';
3650: if ($target eq 'web' || $target eq 'webgrade') {
3651: $currentstring = $token->[4];
3652: }
3653: return $currentstring;
3654: }
3655:
3656: sub end_col {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web' || $target eq 'webgrade') {
3660: $currentstring = $token->[2];
3661: }
3662: return $currentstring;
3663: }
3664:
3665: #-- <colgroup> tag (end tag optional)
3666: sub start_colgroup {
3667: my ($target,$token) = @_;
3668: my $currentstring = '';
3669: if ($target eq 'web' || $target eq 'webgrade') {
3670: $currentstring = $token->[4];
3671: }
3672: return $currentstring;
3673: }
3674:
3675: sub end_colgroup {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[2];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: #-- <del> tag (end tag required)
3685: sub start_del {
3686: my ($target,$token) = @_;
3687: my $currentstring = '';
3688: if ($target eq 'web' || $target eq 'webgrade') {
3689: $currentstring = $token->[4];
3690: }
3691: return $currentstring;
3692: }
3693:
3694: sub end_del {
3695: my ($target,$token) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web' || $target eq 'webgrade') {
3698: $currentstring = $token->[2];
3699: }
3700: return $currentstring;
3701: }
3702:
3703: #-- <fieldset> tag (end tag required)
3704: sub start_fieldset {
3705: my ($target,$token) = @_;
3706: my $currentstring = '';
3707: if ($target eq 'web' || $target eq 'webgrade') {
3708: $currentstring = $token->[4];
3709: }
3710: return $currentstring;
3711: }
3712:
3713: sub end_fieldset {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web' || $target eq 'webgrade') {
3717: $currentstring = $token->[2];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: #-- <frame> tag (end tag forbidden)
3723: sub start_frame {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web' || $target eq 'webgrade') {
3727: $currentstring = $token->[4];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: sub end_frame {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[2];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: #-- <iframe> tag (end tag required)
3742: sub start_iframe {
3743: my ($target,$token) = @_;
3744: my $currentstring = '';
3745: if ($target eq 'web' || $target eq 'webgrade') {
3746: $currentstring = $token->[4];
3747: }
3748: return $currentstring;
3749: }
3750:
3751: sub end_iframe {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[2];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: #-- <ins> tag (end tag required)
3761: sub start_ins {
3762: my ($target,$token) = @_;
3763: my $currentstring = '';
3764: if ($target eq 'web' || $target eq 'webgrade') {
3765: $currentstring = $token->[4];
3766: }
3767: return $currentstring;
3768: }
3769:
3770: sub end_ins {
3771: my ($target,$token) = @_;
3772: my $currentstring = '';
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring = $token->[2];
3775: }
3776: return $currentstring;
3777: }
3778:
3779: #-- <isindex> tag (end tag forbidden)
3780: sub start_isindex {
3781: my ($target,$token) = @_;
3782: my $currentstring = '';
3783: if ($target eq 'web' || $target eq 'webgrade') {
3784: $currentstring = $token->[4];
3785: }
3786: return $currentstring;
3787: }
3788:
3789: sub end_isindex {
3790: my ($target,$token) = @_;
3791: my $currentstring = '';
3792: if ($target eq 'web' || $target eq 'webgrade') {
3793: $currentstring = $token->[2];
3794: }
3795: return $currentstring;
3796: }
3797:
3798: #-- <keygen> tag (end tag forbidden)
3799: sub start_keygen {
3800: my ($target,$token) = @_;
3801: my $currentstring = '';
3802: if ($target eq 'web' || $target eq 'webgrade') {
3803: $currentstring = $token->[4];
3804: }
3805: return $currentstring;
3806: }
3807:
3808: sub end_keygen {
3809: my ($target,$token) = @_;
3810: my $currentstring = '';
3811: if ($target eq 'web' || $target eq 'webgrade') {
3812: $currentstring = $token->[2];
3813: }
3814: return $currentstring;
3815: }
3816:
3817: #-- <label> tag
3818: sub start_label {
3819: my ($target,$token) = @_;
3820: my $currentstring = '';
3821: if ($target eq 'web' || $target eq 'webgrade') {
3822: $currentstring = $token->[4];
3823: }
3824: return $currentstring;
3825: }
3826:
3827: sub end_label {
3828: my ($target,$token) = @_;
3829: my $currentstring = '';
3830: if ($target eq 'web' || $target eq 'webgrade') {
3831: $currentstring = $token->[2];
3832: }
3833: return $currentstring;
3834: }
3835:
3836: #-- <layer> tag (end tag required)
3837: sub start_layer {
3838: my ($target,$token) = @_;
3839: my $currentstring = '';
3840: if ($target eq 'web' || $target eq 'webgrade') {
3841: $currentstring = $token->[4];
3842: }
3843: return $currentstring;
3844: }
3845:
3846: sub end_layer {
3847: my ($target,$token) = @_;
3848: my $currentstring = '';
3849: if ($target eq 'web' || $target eq 'webgrade') {
3850: $currentstring = $token->[2];
3851: }
3852: return $currentstring;
3853: }
3854:
3855: #-- <legend> tag (end tag required)
3856: sub start_legend {
3857: my ($target,$token) = @_;
3858: my $currentstring = '';
3859: if ($target eq 'web' || $target eq 'webgrade') {
3860: $currentstring = $token->[4];
3861: }
3862: return $currentstring;
3863: }
3864:
3865: sub end_legend {
3866: my ($target,$token) = @_;
3867: my $currentstring = '';
3868: if ($target eq 'web' || $target eq 'webgrade') {
3869: $currentstring = $token->[2];
3870: }
3871: return $currentstring;
3872: }
3873:
3874: #-- <link> tag (end tag forbidden)
3875: sub start_link {
3876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3877: my $currentstring = '';
3878: if ($target eq 'web' || $target eq 'webgrade') {
3879: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3880: undef,1);
3881: &Apache::lonxml::extlink($href);
3882: $currentstring = $token->[4];
3883: }
3884: return $currentstring;
3885: }
3886:
3887: sub end_link {
3888: my ($target,$token) = @_;
3889: my $currentstring = '';
3890: if ($target eq 'web' || $target eq 'webgrade') {
3891: $currentstring = $token->[2];
3892: }
3893: return $currentstring;
3894: }
3895:
3896: #-- <marquee> tag (end tag optional)
3897: sub start_marquee {
3898: my ($target,$token) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: $currentstring = $token->[4];
3902: }
3903: return $currentstring;
3904: }
3905:
3906: sub end_marquee {
3907: my ($target,$token) = @_;
3908: my $currentstring = '';
3909: if ($target eq 'web' || $target eq 'webgrade') {
3910: $currentstring = $token->[2];
3911: }
3912: return $currentstring;
3913: }
3914:
3915: #-- <multicol> tag (end tag required)
3916: sub start_multicol {
3917: my ($target,$token) = @_;
3918: my $currentstring = &end_p(); # Close any pending <p>
3919: if ($target eq 'web' || $target eq 'webgrade') {
3920: $currentstring .= $token->[4];
3921: }
3922: return $currentstring;
3923: }
3924:
3925: sub end_multicol {
3926: my ($target,$token) = @_;
3927: my $currentstring = '';
3928: if ($target eq 'web' || $target eq 'webgrade') {
3929: $currentstring = $token->[2];
3930: }
3931: return $currentstring;
3932: }
3933:
3934: #-- <nobr> tag (end tag required)
3935: sub start_nobr {
3936: my ($target,$token) = @_;
3937: my $currentstring = '';
3938: if ($target eq 'web' || $target eq 'webgrade') {
3939: $currentstring = $token->[4];
3940: } elsif ($target eq 'tex') {
3941: $currentstring='\mbox{';
3942: }
3943: return $currentstring;
3944: }
3945:
3946: sub end_nobr {
3947: my ($target,$token) = @_;
3948: my $currentstring = '';
3949: if ($target eq 'web' || $target eq 'webgrade') {
3950: $currentstring = $token->[2];
3951: } elsif ($target eq 'tex') {
3952: $currentstring='}';
3953: }
3954: return $currentstring;
3955: }
3956:
3957: #-- <noembed> tag (end tag required)
3958: sub start_noembed {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[4];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: sub end_noembed {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[2];
3972: }
3973: return $currentstring;
3974: }
3975:
3976: #-- <noframes> tag (end tag required)
3977: sub start_noframes {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[4];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: sub end_noframes {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[2];
3991: }
3992: return $currentstring;
3993: }
3994:
3995: #-- <nolayer> tag (end tag required)
3996: sub start_nolayer {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[4];
4001: }
4002: return $currentstring;
4003: }
4004:
4005: sub end_nolayer {
4006: my ($target,$token) = @_;
4007: my $currentstring = '';
4008: if ($target eq 'web' || $target eq 'webgrade') {
4009: $currentstring = $token->[2];
4010: }
4011: return $currentstring;
4012: }
4013:
4014: #-- <noscript> tag (end tag required)
4015: sub start_noscript {
4016: my ($target,$token) = @_;
4017: my $currentstring = '';
4018: if ($target eq 'web' || $target eq 'webgrade') {
4019: $currentstring = $token->[4];
4020: }
4021: return $currentstring;
4022: }
4023:
4024: sub end_noscript {
4025: my ($target,$token) = @_;
4026: my $currentstring = '';
4027: if ($target eq 'web' || $target eq 'webgrade') {
4028: $currentstring = $token->[2];
4029: }
4030: return $currentstring;
4031: }
4032:
4033: #-- <object> tag (end tag required)
4034: sub start_object {
4035: my ($target,$token) = @_;
4036: my $currentstring = '';
4037: if ($target eq 'web' || $target eq 'webgrade') {
4038: $currentstring = $token->[4];
4039: }
4040: return $currentstring;
4041: }
4042:
4043: sub end_object {
4044: my ($target,$token) = @_;
4045: my $currentstring = '';
4046: if ($target eq 'web' || $target eq 'webgrade') {
4047: $currentstring = $token->[2];
4048: }
4049: return $currentstring;
4050: }
4051:
4052: #-- <optgroup> tag (end tag required)
4053: sub start_optgroup {
4054: my ($target,$token) = @_;
4055: my $currentstring = '';
4056: if ($target eq 'web' || $target eq 'webgrade') {
4057: $currentstring = $token->[4];
4058: }
4059: return $currentstring;
4060: }
4061:
4062: sub end_optgroup {
4063: my ($target,$token) = @_;
4064: my $currentstring = '';
4065: if ($target eq 'web' || $target eq 'webgrade') {
4066: $currentstring = $token->[2];
4067: }
4068: return $currentstring;
4069: }
4070:
4071: #-- <samp> tag (end tag required)
4072: sub start_samp {
4073: my ($target,$token) = @_;
4074: my $currentstring = '';
4075: if ($target eq 'web' || $target eq 'webgrade') {
4076: $currentstring = $token->[4];
4077: } elsif ($target eq 'tex') {
4078: $currentstring='\texttt{';
4079: }
4080: return $currentstring;
4081: }
4082:
4083: sub end_samp {
4084: my ($target,$token) = @_;
4085: my $currentstring = '';
4086: if ($target eq 'web' || $target eq 'webgrade') {
4087: $currentstring = $token->[2];
4088: } elsif ($target eq 'tex') {
4089: $currentstring='}';
4090: }
4091: return $currentstring;
4092: }
4093:
4094: #-- <server> tag
4095: sub start_server {
4096: my ($target,$token) = @_;
4097: my $currentstring = '';
4098: if ($target eq 'web' || $target eq 'webgrade') {
4099: $currentstring = $token->[4];
4100: }
4101: return $currentstring;
4102: }
4103:
4104: sub end_server {
4105: my ($target,$token) = @_;
4106: my $currentstring = '';
4107: if ($target eq 'web' || $target eq 'webgrade') {
4108: $currentstring = $token->[2];
4109: }
4110: return $currentstring;
4111: }
4112:
4113: #-- <spacer> tag (end tag forbidden)
4114: sub start_spacer {
4115: my ($target,$token) = @_;
4116: my $currentstring = &end_p(); # Close off any open <p> tag.
4117: if ($target eq 'web' || $target eq 'webgrade') {
4118: $currentstring .= $token->[4];
4119: }
4120: return $currentstring;
4121: }
4122:
4123: sub end_spacer {
4124: my ($target,$token) = @_;
4125: my $currentstring = '';
4126: if ($target eq 'web' || $target eq 'webgrade') {
4127: $currentstring = $token->[2];
4128: }
4129: return $currentstring;
4130: }
4131:
4132: #-- <span> tag (end tag required)
4133: sub start_span {
4134: my ($target,$token) = @_;
4135: my $currentstring = '';
4136: if ($target eq 'web' || $target eq 'webgrade') {
4137: $currentstring = $token->[4];
4138: }
4139: return $currentstring;
4140: }
4141:
4142: sub end_span {
4143: my ($target,$token) = @_;
4144: my $currentstring = '';
4145: if ($target eq 'web' || $target eq 'webgrade') {
4146: $currentstring = $token->[2];
4147: }
4148: return $currentstring;
4149: }
4150:
4151: #-- <tbody> tag (end tag optional)
4152: sub start_tbody {
4153: my ($target,$token) = @_;
4154: my $currentstring = '';
4155: if ($target eq 'web' || $target eq 'webgrade') {
4156: $currentstring = $token->[4];
4157: }
4158: return $currentstring;
4159: }
4160:
4161: sub end_tbody {
4162: my ($target,$token) = @_;
4163: my $currentstring = '';
4164: if ($target eq 'web' || $target eq 'webgrade') {
4165: $currentstring = $token->[2];
4166: }
4167: return $currentstring;
4168: }
4169:
4170: #-- <tfoot> tag (end tag optional)
4171: sub start_tfoot {
4172: my ($target,$token) = @_;
4173: my $currentstring = '';
4174: if ($target eq 'web' || $target eq 'webgrade') {
4175: $currentstring = $token->[4];
4176: }
4177: return $currentstring;
4178: }
4179:
4180: sub end_tfoot {
4181: my ($target,$token) = @_;
4182: my $currentstring = '';
4183: if ($target eq 'web' || $target eq 'webgrade') {
4184: $currentstring = $token->[2];
4185: }
4186: return $currentstring;
4187: }
4188:
4189: #-- <thead> tag (end tag optional)
4190: sub start_thead {
4191: my ($target,$token) = @_;
4192: my $currentstring = '';
4193: if ($target eq 'web' || $target eq 'webgrade') {
4194: $currentstring = $token->[4];
4195: }
4196: return $currentstring;
4197: }
4198:
4199: sub end_thead {
4200: my ($target,$token) = @_;
4201: my $currentstring = '';
4202: if ($target eq 'web' || $target eq 'webgrade') {
4203: $currentstring = $token->[2];
4204: }
4205: return $currentstring;
4206: }
4207:
4208: #-- <var> tag
4209: sub start_var {
4210: my ($target,$token) = @_;
4211: my $currentstring = '';
4212: if ($target eq 'web' || $target eq 'webgrade') {
4213: $currentstring = $token->[4];
4214: } elsif ($target eq 'tex') {
4215: $currentstring = '\textit{';
4216: }
4217: return $currentstring;
4218: }
4219:
4220: sub end_var {
4221: my ($target,$token) = @_;
4222: my $currentstring = '';
4223: if ($target eq 'web' || $target eq 'webgrade') {
4224: $currentstring = $token->[2];
4225: } elsif ($target eq 'tex') {
4226: $currentstring = '}';
4227: }
4228: return $currentstring;
4229: }
4230:
4231: #-- <wbr> tag (end tag forbidden)
4232: sub start_wbr {
4233: my ($target,$token) = @_;
4234: my $currentstring = '';
4235: if ($target eq 'web' || $target eq 'webgrade') {
4236: $currentstring = $token->[4];
4237: }
4238: return $currentstring;
4239: }
4240:
4241: sub end_wbr {
4242: my ($target,$token) = @_;
4243: my $currentstring = '';
4244: if ($target eq 'web' || $target eq 'webgrade') {
4245: $currentstring = $token->[2];
4246: }
4247: return $currentstring;
4248: }
4249:
4250: #-- <hideweboutput> tag
4251: sub start_hideweboutput {
4252: my ($target,$token) = @_;
4253: if ($target eq 'web' || $target eq 'webgrade') {
4254: &Apache::lonxml::startredirection();
4255: }
4256: return '';
4257: }
4258:
4259: sub end_hideweboutput {
4260: my ($target,$token) = @_;
4261: my $currentstring = '';
4262: if ($target eq 'web' || $target eq 'webgrade') {
4263: $currentstring = &Apache::lonxml::endredirection();
4264: }
4265: return '';
4266: }
4267:
4268:
4269: sub image_replication {
4270: my $src = shift;
4271: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4272: #replicates eps or ps
4273: my $epssrc = my $pssrc = $src;
4274: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4275: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4276: if (not -e $epssrc && not -e $pssrc) {
4277: my $result=&Apache::lonnet::repcopy($epssrc);
4278: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4279: }
4280: return '';
4281: }
4282: #
4283: # Get correct sizing parameter for an image given
4284: # it's initial ht. and wid. This allows sizing of
4285: # images that are generated on-the-fly (e.g. gnuplot)
4286: # as well as serving as a utility for image_size.
4287: #
4288: # Parameter:
4289: # height_param
4290: # width_param - Initial picture dimensions.
4291: # scaling - A scale factor.
4292: # parstack, - the current stack of tag attributes
4293: # from the xml parser
4294: # safeeval, - pointer to the safespace
4295: # depth, - from what level in the stack to look for attributes
4296: # (assumes -1 if unspecified)
4297: # cis - look for attrubutes case insensitively
4298: # (assumes false)
4299: #
4300: # Returns:
4301: # height, width - new dimensions.
4302: #
4303: sub resize_image {
4304: my ($height_param, $width_param, $scaling,
4305: $parstack, $safeeval, $depth, $cis) = @_;
4306:
4307: # First apply the scaling...
4308:
4309: $height_param = $height_param * $scaling;
4310: $width_param = $width_param * $scaling;
4311:
4312: #do we have any specified LaTeX size of the picture?
4313: my $toget='TeXwidth';
4314: if ($cis) {
4315: $toget=lc($toget);
4316: }
4317: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4318: $safeeval,$depth,$cis);
4319: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4320: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4321: $safeeval,$depth,$cis);
4322: #do we have any specified web size of the picture?
4323: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4324: $depth,1);
4325: if ($TeXwidth) {
4326: my $old_width_param=$width_param;
4327: if ($TeXwidth=~/(\d+)\s*\%/) {
4328: $width_param = $1*$env{'form.textwidth'}/100;
4329: } else {
4330: $width_param = $TeXwidth;
4331: }
4332: if ($TeXheight) {
4333: $height_param = $TeXheight;
4334: } elsif ($old_width_param) {
4335: $height_param=$TeXwidth/$old_width_param*$height_param;
4336: }
4337: } elsif ($TeXheight) {
4338: $height_param = $TeXheight;
4339: if ($height_param) {
4340: $width_param = $TeXheight/$height_param*$width_param;
4341: }
4342: } elsif ($width) {
4343: my $old_width_param=$width_param;
4344: $width_param = $width*$scaling;
4345: if ($old_width_param) {
4346: $height_param=$width_param/$old_width_param*$height_param;
4347: }
4348: }
4349: if ($width_param > $env{'form.textwidth'}) {
4350: my $old_width_param=$width_param;
4351: $width_param =0.95*$env{'form.textwidth'};
4352: if ($old_width_param) {
4353: $height_param=$width_param/$old_width_param*$height_param;
4354: }
4355: }
4356:
4357: return ($height_param, $width_param);
4358: }
4359:
4360: sub image_size {
4361: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4362:
4363: #size of image from gif/jpg/jpeg/png
4364: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4365: if (-e $ressrc) {
4366: $src = $ressrc;
4367: }
4368: my $image = Image::Magick->new;
4369: my $current_figure = $image->Read($src);
4370: my $width_param = $image->Get('width');
4371: my $height_param = $image->Get('height');
4372: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4373: undef($image);
4374:
4375: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4376: $scaling, $parstack, $safeeval,
4377: $depth, $cis);
4378:
4379: return ($height_param, $width_param);
4380: }
4381:
4382: sub image_width {
4383: my ($height, $width) = &image_size(@_);
4384: return $width;
4385: }
4386: # Not yet 100% sure this is correct in all circumstances..
4387: # due to my uncertainty about mods to image_size.
4388: #
4389: sub image_height {
4390: my ($height, $width) = &image_size(@_);
4391: return $height;
4392: }
4393:
4394: sub get_eps_image {
4395: my ($src)=@_;
4396: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4397:
4398: # In order to prevent the substitution of the alt text, we need to
4399: # be sure the orig_src file is on system now so:
4400:
4401: if (! -e $orig_src) {
4402: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4403: }
4404: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4405: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4406: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4407: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4408: &Apache::lonxml::debug("Filelocation gives: $src");
4409: if (! -e $src) {
4410: &Apache::lonxml::debug("$src does not exist");
4411: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4412: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4413: #if replication failed try to find ps file
4414: $src=~s/\.eps$/\.ps/;
4415: &Apache::lonxml::debug("Now looking for $src");
4416: #if no ps file try to replicate it.
4417: my $didrepcopy = &Apache::lonnet::repcopy($src);
4418: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4419: if ( (not -e $src) ||
4420: ($didrepcopy ne 'ok')) {
4421: &Apache::lonxml::debug("Failed to find or replicate $src");
4422:
4423: #if replication failed try to produce eps file dynamically
4424: $src=~s/\.ps$/\.eps/;
4425: my $temp_file;
4426: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4427: my $newsrc=$orig_src;
4428: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4429: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4430: print FILE ("$newsrc\n");
4431: close(FILE);
4432: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4433: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4434: if ($sext ne "") { # Put the ext. back in to uniquify.
4435: $src =~ s/\.eps$/$sext.eps/;
4436: }
4437:
4438: }
4439:
4440: }
4441: } else {
4442: # If the postscript file has spaces in its name,
4443: # LaTeX will gratuitiously vomit. Therefore
4444: # queue such files for copy with " " replaced by "_".
4445: # printout.pm will know them by their .ps or .eps extensions.
4446: my $newsrc = $orig_src;
4447: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4448: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4449: print FILE "$src\n";
4450: close FILE;
4451: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4452: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4453: }
4454: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4455: $path =~ s/ /\_/g;
4456: $file =~ s/ /\_/g;
4457: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4458: return ($path.'/',$file);
4459: }
4460:
4461: sub eps_generation {
4462: my ($src,$file,$width_param) = @_;
4463: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4464: my $temp_file = Apache::File->new('>>'.$filename);
4465: print $temp_file "$src\n";
4466: my $newsrc = $src;
4467: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4468: $newsrc=~s{/home/httpd/html/res}{};
4469: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4470: $newsrc=~s{/\./}{/};
4471: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4472: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4473: $newsrc=~s{/home/httpd/lonUsers}{};
4474: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4475: }
4476: if ($newsrc=~m{/userfiles/}) {
4477: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4478: } else {
4479: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4480: }
4481: }
4482:
4483: sub file_path {
4484: my $src=shift;
4485: my ($file,$path);
4486: if ($src =~ m!(.*)/([^/]*)$!) {
4487: $file = $2;
4488: $path = $1.'/';
4489: }
4490: return $file,$path;
4491: }
4492: # Converts a measurement in to mm from any of
4493: # the other valid LaTeX units of measure.
4494: # If the units of measure are missing from the
4495: # parameter, it is assumed to be in and returned
4496: # with mm units of measure
4497: sub recalc {
4498: my $argument = shift;
4499: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4500: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4501: my $value=$1;
4502: my $units=$2;
4503: if ($units eq 'cm') {
4504: $value*=10;
4505: } elsif ($units eq 'in') {
4506: $value*=25.4;
4507: } elsif ($units eq 'pc') {
4508: $value*=(25.4*12/72.27);
4509: } elsif ($units eq 'pt') {
4510: $value*=(25.4/72.27);
4511: }
4512: return $value.' mm';
4513: }
4514:
4515: sub LATEX_length {
4516: my $garbage=shift;
4517: $garbage=~s/^\s+$//;
4518: $garbage=~s/^\s+(\S.*)/$1/;#space before
4519: $garbage=~s/(.*\S)\s+$/$1/;#space after
4520: $garbage=~s/(\s)+/$1/;#only one space
4521: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4522: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4523: $garbage=~s/([^\\])\$/$1/g;#$
4524: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4525: $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;
4526: $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;
4527: $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;
4528: $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;
4529: $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;
4530: $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;
4531: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4532: #remove some other LaTeX command
4533: $garbage=~s|\\(\w+)\\|\\|g;
4534: $garbage=~s|\\(\w+)(\s*)|$2|g;
4535: $garbage=~s|\+|11|g;
4536: my $value=length($garbage);
4537: return $value;
4538: }
4539:
4540: # Wrap image 'stuff' inside of the LaTeX required to implement
4541: # alignment:
4542: # align_tex_image(align, latex_rendering, image)
4543: # Where:
4544: # align - The HTML alignment specification.
4545: # latex_rendering - rendering hint for latex.
4546: # image - The LaTeX needed to insert the image itsef.
4547: # width,height - dimensions of the image.
4548: # Returns:
4549: # The 1/2 wrapped image and the stuff required to close the
4550: # wrappage. This allows e.g. randomlabel to insert more stuff
4551: # into the closure.
4552: #
4553: sub align_latex_image {
4554: my ($align, $latex_rendering, $image, $width, $height) = @_;
4555: my $currentstring; # The 1/2 wrapped image.
4556: my $closure; # The closure of the wrappage.
4557:
4558: # if it's none just return it back
4559: if ($latex_rendering eq 'none') {
4560: return ($image,'');
4561: }
4562:
4563: # If there's an alignment specification we need to honor it here.
4564: # For the horizontal alignments, we will also honor the
4565: # value of the latex specfication. The default is parbox,
4566: # and that's used for illegal values too.
4567: #
4568: # Even though we set a default alignment value, the user
4569: # could have given us an illegal value. In that case we
4570: # just use the default alignment of bottom..
4571: $currentstring = "\n% figurewrapping \n";
4572: if ($align eq "top") {
4573: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4574: $closure = '}';
4575: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4576: my $offset = $height/2;
4577: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4578: $closure = '}';
4579: } elsif ($align eq "left") {
4580: if ($latex_rendering eq "parpic") {
4581: $currentstring .= '\parpic[l]{'.$image;
4582: $closure = '}';
4583: } elsif ($latex_rendering eq "parbox") {
4584: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4585: .$image;
4586: $closure = '\end{minipage}';
4587: } elsif ($latex_rendering eq "wrapfigure"
4588: || $latex_rendering ne 'none') { # wrapfig render
4589: $currentstring .=
4590: '\begin{wrapfigure}{l}{'.$width.'mm}'
4591: .'\scalebox{1.0}{'.$image;
4592: $closure = '}\end{wrapfigure}';
4593: }
4594: } elsif ($align eq "right") {
4595: if ($latex_rendering eq "parpic") {
4596: $currentstring .= '\parpic[r]{'.$image;
4597: $closure = '}';
4598: } elsif ($latex_rendering eq "parbox") {
4599: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4600: .$image;
4601: $closure = '\end{minipage}';
4602: } elsif ($latex_rendering eq "wrapfigure"
4603: || $latex_rendering ne 'none') { # wrapfig render
4604: $currentstring .=
4605: '\begin{wrapfigure}{r}{'.$width.'mm}'
4606: .'\scalebox{1.0}{'.$image;
4607: $closure = '}\end{wrapfigure}';
4608: }
4609: } else { # Bottom is also default.
4610: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4611: $currentstring .= "{$image";
4612: $closure = '}';
4613: }
4614: $currentstring .= "\n% end wrappage\n";
4615: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4616: return ($currentstring, $closure);
4617: }
4618:
4619: # is_inside_of $tagstack $tag
4620: # This sub returns true if the current state of Xml processing
4621: # is inside of the tag.
4622: # Parameters:
4623: # tagstack - The tagstack from the parser.
4624: # tag - The tag (without the <>'s.).
4625: # Sample usage:
4626: # if (is_inside_of($tagstack "table")) {
4627: # # I'm in a table....
4628: # }
4629: sub is_inside_of {
4630: my ($tagstack, $tag) = @_;
4631: my @stack = @$tagstack;
4632: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4633: if ($stack[$i] eq $tag) {
4634: return 1;
4635: }
4636: }
4637: return 0;
4638: }
4639:
4640:
4641: 1;
4642: __END__
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